diff options
Diffstat (limited to 'karbon/render')
28 files changed, 9061 insertions, 0 deletions
diff --git a/karbon/render/Makefile.am b/karbon/render/Makefile.am new file mode 100644 index 00000000..5f604f6c --- /dev/null +++ b/karbon/render/Makefile.am @@ -0,0 +1,34 @@ +SUBDIRS = xrgbrender + +INCLUDES = $(KOFFICE_INCLUDES) $(KOPAINTER_INCLUDES) \ + -I$(srcdir)/.. \ + -I$(srcdir)/xrgbrender \ + -I$(srcdir)/../core \ + $(LIBART_CFLAGS) \ + $(all_includes) + +noinst_LTLIBRARIES = libvpainter.la + +noinst_HEADERS = \ + vpainter.h \ + vpainterfactory.h \ + vqpainter.h \ + art_render_pattern.h \ + art_render_misc.h \ + art_rgb_svp.h \ + art_rgb.h \ + art_rgba_affine.h \ + vkopainter.h + +libvpainter_la_SOURCES = \ + vpainterfactory.cc \ + vqpainter.cc \ + art_render_pattern.c \ + art_render_misc.c \ + art_rgb_svp.c \ + art_rgb.c \ + art_rgba_affine.c \ + vkopainter.cc + +libvpainter_la_METASOURCES = \ + AUTO diff --git a/karbon/render/art_render_misc.c b/karbon/render/art_render_misc.c new file mode 100644 index 00000000..088a3984 --- /dev/null +++ b/karbon/render/art_render_misc.c @@ -0,0 +1,403 @@ +/* This file is part of the KDE project. + * art_render_misc.c: Here I store some routines I feel should be in libart :) + * + * Copyright (C) 2002, The Karbon Developers + * + * This code is adapted from : + * + * art_render_gradient.c: Gradient image source for modular rendering. + * + * Libart_LGPL - library of basic graphic primitives + * Copyright (C) 2000 Raph Levien + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + * + * Authors: Raph Levien <raph@acm.org> + * Alexander Larsson <alla@lysator.liu.se> + */ + +#include "config.h" +#include "art_render_misc.h" + +#include <math.h> + +typedef struct _ArtImageSourceGradLin ArtImageSourceGradLin; +typedef struct _ArtImageSourceGradRad ArtImageSourceGradRad; +typedef struct _ArtImageSourceGradCon ArtImageSourceGradCon; + +struct _ArtImageSourceGradLin { + ArtImageSource super; + const ArtGradientLinear *gradient; +}; + +struct _ArtImageSourceGradRad { + ArtImageSource super; + const ArtGradientRadial *gradient; + double a; +}; + +struct _ArtImageSourceGradCon { + ArtImageSource super; + const ArtGradientConical *gradient; +}; + + +#define EPSILON 1e-6 + +/** + * art_karbon_render_gradient_setpix: Set a gradient pixel. + * @render: The render object. + * @dst: Pointer to destination (where to store pixel). + * @n_stops: Number of stops in @stops. + * @stops: The stops for the gradient. + * @offset: The offset. + * + * @n_stops must be > 0. + * + * Sets a gradient pixel, storing it at @dst. + **/ +static void +art_karbon_render_gradient_setpix (ArtRender *render, + art_u8 *dst, + int n_stops, ArtGradientStop *stops, + double offset) +{ + int ix; + int j; + double off0, off1; + int n_ch = render->n_chan + 1; + + for (ix = 0; ix < n_stops; ix++) + if (stops[ix].offset > offset) + break; + /* stops[ix - 1].offset < offset < stops[ix].offset */ + if (ix > 0 && ix < n_stops) + { + off0 = stops[ix - 1].offset; + off1 = stops[ix].offset; + if (fabs (off1 - off0) > EPSILON) + { + double interp; + + interp = (offset - off0) / (off1 - off0); + for (j = 0; j < n_ch; j++) + { + int z0, z1; + int z; + z0 = stops[ix - 1].color[j]; + z1 = stops[ix].color[j]; + z = floor (z0 + (z1 - z0) * interp + 0.5); + if (render->buf_depth == 8) + dst[j] = ART_PIX_8_FROM_MAX (z); + else /* (render->buf_depth == 16) */ + ((art_u16 *)dst)[j] = z; + } + return; + } + } + else if (ix == n_stops) + ix--; + + for (j = 0; j < n_ch; j++) + { + int z; + z = stops[ix].color[j]; + if (render->buf_depth == 8) + dst[j] = ART_PIX_8_FROM_MAX (z); + else /* (render->buf_depth == 16) */ + ((art_u16 *)dst)[j] = z; + } +} + +static void +art_karbon_render_gradient_linear_done (ArtRenderCallback *self, ArtRender *render) +{ + art_free (self); +} + +static void +art_karbon_render_gradient_linear_render (ArtRenderCallback *self, ArtRender *render, + art_u8 *dest, int y) +{ + ArtImageSourceGradLin *z = (ArtImageSourceGradLin *)self; + const ArtGradientLinear *gradient = z->gradient; + int pixstride = (render->n_chan + 1) * (render->depth >> 3); + int x; + int width = render->x1 - render->x0; + double offset, d_offset; + double actual_offset; + int n_stops = gradient->n_stops; + ArtGradientStop *stops = gradient->stops; + art_u8 *bufp = render->image_buf; + ArtGradientSpread spread = gradient->spread; + + offset = render->x0 * gradient->a + y * gradient->b + gradient->c; + d_offset = gradient->a; + + for (x = 0; x < width; x++) + { + if (spread == ART_GRADIENT_PAD) + actual_offset = offset; + else if (spread == ART_GRADIENT_REPEAT) + actual_offset = offset - floor (offset); + else /* (spread == ART_GRADIENT_REFLECT) */ + { + double tmp; + + tmp = offset - 2 * floor (0.5 * offset); + actual_offset = tmp > 1 ? 2 - tmp : tmp; + } + art_karbon_render_gradient_setpix (render, bufp, n_stops, stops, actual_offset); + offset += d_offset; + bufp += pixstride; + } +} + +static void +art_karbon_render_gradient_linear_negotiate (ArtImageSource *self, ArtRender *render, + ArtImageSourceFlags *p_flags, + int *p_buf_depth, ArtAlphaType *p_alpha) +{ + self->super.render = art_karbon_render_gradient_linear_render; + *p_flags = 0; + *p_buf_depth = render->depth; + *p_alpha = ART_ALPHA_PREMUL; +} + +/** + * art_karbon_render_gradient_linear: Add a linear gradient image source. + * @render: The render object. + * @gradient: The linear gradient. + * + * Adds the linear gradient @gradient as the image source for rendering + * in the render object @render. + **/ +void +art_karbon_render_gradient_linear (ArtRender *render, + const ArtGradientLinear *gradient, + ArtFilterLevel level) +{ + ArtImageSourceGradLin *image_source = art_new (ArtImageSourceGradLin, 1); + + image_source->super.super.render = NULL; + image_source->super.super.done = art_karbon_render_gradient_linear_done; + image_source->super.negotiate = art_karbon_render_gradient_linear_negotiate; + + image_source->gradient = gradient; + + art_render_add_image_source (render, &image_source->super); +} + +static void +art_karbon_render_gradient_radial_done (ArtRenderCallback *self, ArtRender *render) +{ + art_free (self); +} + +static void +art_karbon_render_gradient_radial_render (ArtRenderCallback *self, ArtRender *render, + art_u8 *dest, int y) +{ + ArtImageSourceGradRad *z = (ArtImageSourceGradRad *)self; + const ArtGradientRadial *gradient = z->gradient; + int pixstride = (render->n_chan + 1) * (render->depth >> 3); + int x; + int x0 = render->x0; + int width = render->x1 - x0; + int n_stops = gradient->n_stops; + ArtGradientStop *stops = gradient->stops; + art_u8 *bufp = render->image_buf; + double fx = gradient->fx; + double fy = gradient->fy; + double dx, dy; + double *affine = gradient->affine; + double aff0 = affine[0]; + double aff1 = affine[1]; + const double a = z->a; + const double arecip = 1.0 / a; + double b, db; + double c, dc, ddc; + double b_a, db_a; + double rad, drad, ddrad; + ArtGradientSpread spread = gradient->spread; + + dx = x0 * aff0 + y * affine[2] + affine[4] - fx; + dy = x0 * aff1 + y * affine[3] + affine[5] - fy; + b = dx * fx + dy * fy; + db = aff0 * fx + aff1 * fy; + c = dx * dx + dy * dy; + dc = 2 * aff0 * dx + aff0 * aff0 + 2 * aff1 * dy + aff1 * aff1; + ddc = 2 * aff0 * aff0 + 2 * aff1 * aff1; + + b_a = b * arecip; + db_a = db * arecip; + + rad = b_a * b_a + c * arecip; + drad = 2 * b_a * db_a + db_a * db_a + dc * arecip; + ddrad = 2 * db_a * db_a + ddc * arecip; + + for (x = 0; x < width; x++) + { + double z; + + if (rad > 0) + z = b_a + sqrt (rad); + else + z = b_a; + + if (spread == ART_GRADIENT_REPEAT) + z = z - floor (z); + else if (spread == ART_GRADIENT_REFLECT) + { + double tmp; + + tmp = z - 2 * floor (0.5 * z); + z = tmp > 1 ? 2 - tmp : tmp; + } + + art_karbon_render_gradient_setpix (render, bufp, n_stops, stops, z); + bufp += pixstride; + b_a += db_a; + rad += drad; + drad += ddrad; + } +} + +static void +art_karbon_render_gradient_radial_negotiate (ArtImageSource *self, ArtRender *render, + ArtImageSourceFlags *p_flags, + int *p_buf_depth, ArtAlphaType *p_alpha) +{ + self->super.render = art_karbon_render_gradient_radial_render; + *p_flags = 0; + *p_buf_depth = render->depth; + *p_alpha = ART_ALPHA_PREMUL; +} + +/** + * art_karbon_render_gradient_radial: Add a radial gradient image source. + * @render: The render object. + * @gradient: The radial gradient. + * + * Adds the radial gradient @gradient as the image source for rendering + * in the render object @render. + **/ +void +art_karbon_render_gradient_radial (ArtRender *render, + const ArtGradientRadial *gradient, + ArtFilterLevel level) +{ + ArtImageSourceGradRad *image_source = art_new (ArtImageSourceGradRad, 1); + double fx = gradient->fx; + double fy = gradient->fy; + + image_source->super.super.render = NULL; + image_source->super.super.done = art_karbon_render_gradient_radial_done; + image_source->super.negotiate = art_karbon_render_gradient_radial_negotiate; + + image_source->gradient = gradient; + /* todo: sanitycheck fx, fy? */ + image_source->a = 1 - fx * fx - fy * fy; + + art_render_add_image_source (render, &image_source->super); +} + +/* Conical */ + +static void +art_render_gradient_conical_done (ArtRenderCallback *self, ArtRender *render) +{ + art_free (self); +} + +static void +art_render_gradient_conical_render (ArtRenderCallback *self, ArtRender *render, + art_u8 *dest, int y) +{ + ArtImageSourceGradCon *z = (ArtImageSourceGradCon *)self; + const ArtGradientConical *gradient = z->gradient; + int pixstride = (render->n_chan + 1) * (render->depth >> 3); + int x; + int x0 = render->x0; + int width = render->x1 - x0; + int n_stops = gradient->n_stops; + ArtGradientStop *stops = gradient->stops; + art_u8 *bufp = render->image_buf; + double cx = gradient->cx; + double cy = gradient->cy; + double r = gradient->r; + double dx, dy; + ArtGradientSpread spread = gradient->spread; + + dy = fabs(y) - fabs(cy); + + for (x = 0; x < width; x++) + { + double z; + dx = fabs(x0 + x) - fabs(cx); + + z = (fabs(dx) + fabs(dy)) / (r); + + if (spread == ART_GRADIENT_REPEAT) + z = z - floor (z); + else if (spread == ART_GRADIENT_REFLECT) + { + double tmp; + + tmp = z - 2 * floor (0.5 * z); + z = tmp > 1 ? 2 - tmp : tmp; + } + + art_karbon_render_gradient_setpix (render, bufp, n_stops, stops, z); + bufp += pixstride; + } +} + +static void +art_render_gradient_conical_negotiate (ArtImageSource *self, ArtRender *render, + ArtImageSourceFlags *p_flags, + int *p_buf_depth, ArtAlphaType *p_alpha) +{ + self->super.render = art_render_gradient_conical_render; + *p_flags = 0; + *p_buf_depth = render->depth; + *p_alpha = ART_ALPHA_PREMUL; +} + +/** + * art_render_gradient_radial: Add a radial gradient image source. + * @render: The render object. + * @gradient: The radial gradient. + * + * Adds the radial gradient @gradient as the image source for rendering + * in the render object @render. + **/ +void +art_karbon_render_gradient_conical (ArtRender *render, + const ArtGradientConical *gradient, + ArtFilterLevel level) +{ + ArtImageSourceGradCon *image_source = art_new (ArtImageSourceGradCon, 1); + + image_source->super.super.render = NULL; + image_source->super.super.done = art_render_gradient_conical_done; + image_source->super.negotiate = art_render_gradient_conical_negotiate; + + image_source->gradient = gradient; + + art_render_add_image_source (render, &image_source->super); +} + diff --git a/karbon/render/art_render_misc.h b/karbon/render/art_render_misc.h new file mode 100644 index 00000000..9d4b444c --- /dev/null +++ b/karbon/render/art_render_misc.h @@ -0,0 +1,109 @@ +/* This file is part of the KDE project. + * art_render_misc.c: Here I store some routines I feel should be in libart :) + * + * Copyright (C) 2002, The Karbon Developers + * + * This code is adapted from : + * + * art_render_gradient.h: Gradient image source for modular rendering. + * + * Libart_LGPL - library of basic graphic primitives + * Copyright (C) 2000 Raph Levien + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + * + * Authors: Raph Levien <raph@acm.org> + * Alexander Larsson <alla@lysator.liu.se> + */ + +#ifndef __ART_RENDER_MISC_H__ +#define __ART_RENDER_MISC_H__ + +#ifdef LIBART_COMPILATION +#include "art_filterlevel.h" +#include "art_render.h" +#else +#include <libart_lgpl/art_filterlevel.h> +#include <libart_lgpl/art_render.h> +#endif + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + +typedef struct _ArtGradientLinear ArtGradientLinear; +typedef struct _ArtGradientRadial ArtGradientRadial; +typedef struct _ArtGradientConical ArtGradientConical; +typedef struct _ArtGradientStop ArtGradientStop; + +typedef enum { + ART_GRADIENT_PAD, + ART_GRADIENT_REFLECT, + ART_GRADIENT_REPEAT +} ArtGradientSpread; + +struct _ArtGradientLinear { + double a; + double b; + double c; + ArtGradientSpread spread; + int n_stops; + ArtGradientStop *stops; +}; + +struct _ArtGradientRadial { + double affine[6]; /* transforms user coordinates to unit circle */ + double fx, fy; /* focal point in unit circle coords */ + int n_stops; + ArtGradientSpread spread; + ArtGradientStop *stops; +}; + +struct _ArtGradientConical { + double cx, cy; /* focal point in unit circle coords */ + double r; /* focal point in unit circle coords */ + ArtGradientSpread spread; + art_u8 *buf; + int n_stops; + ArtGradientStop *stops; +}; + + +struct _ArtGradientStop { + double offset; + ArtPixMaxDepth color[ART_MAX_CHAN + 1]; +}; + +void +art_karbon_render_gradient_linear (ArtRender *render, + const ArtGradientLinear *gradient, + ArtFilterLevel level); + +void +art_karbon_render_gradient_radial (ArtRender *render, + const ArtGradientRadial *gradient, + ArtFilterLevel level); + +void +art_karbon_render_gradient_conical (ArtRender *render, + const ArtGradientConical *gradient, + ArtFilterLevel level); + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif /* __ART_RENDER_MISC_H__ */ diff --git a/karbon/render/art_render_pattern.c b/karbon/render/art_render_pattern.c new file mode 100644 index 00000000..9245402d --- /dev/null +++ b/karbon/render/art_render_pattern.c @@ -0,0 +1,111 @@ +/* + * art_render_pattern.c: + * + * Libart_LGPL - library of basic graphic primitives + * Copyright (C) 2000 Raph Levien + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + * + */ + +#include "config.h" +#include "art_render_pattern.h" + +#include <math.h> + +typedef struct _ArtImageSourcePattern ArtImageSourcePattern; + +struct _ArtImageSourcePattern { + ArtImageSource super; + const ArtPattern *pattern; +}; + +static void +art_render_pattern_done (ArtRenderCallback *self, ArtRender *render) +{ + art_free (self); +} + +static void +art_render_pattern_render (ArtRenderCallback *self, ArtRender *render, + art_u8 *dest, int y) +{ + ArtImageSourcePattern *z = (ArtImageSourcePattern *)self; + const ArtPattern *pattern = z->pattern; + int pixstride = (render->n_chan + 1) * (render->depth >> 3); + int n_ch = render->n_chan + 1; + int x, j, index; + int width = render->x1 - render->x0; + int twidth = pattern->twidth; + int theight = pattern->theight; + art_u8 *bufp = render->image_buf; + + double angle = pattern->angle; + double opacity = pattern->opacity; + double cosangle = cos(angle); + double sinangle = sin(angle); + + y = y - render->y0; + + if(theight == 0) return; + + for (x = 0; x < width; x++) + { + int x0 = sinangle * y + cosangle * x; + int y0 = -sinangle * x + cosangle * y; + x0 = (x0 % twidth); + if(x0 < 0) x0 += twidth; + y0 = (y0 % theight); + if(y0 < 0) y0 += theight; + index = (((y0 * twidth + x0) * pixstride) % (twidth * theight * 4)); + /*for (j = 0; j < n_ch - 1; j++) + {*/ + /* bgra -> rgba */ + bufp[0] = pattern->buffer[index + 2]; + bufp[1] = pattern->buffer[index + 1]; + bufp[2] = pattern->buffer[index + 0]; + bufp[3] = opacity; + /*}*/ + bufp += pixstride; + } +} + +static void +art_render_pattern_negotiate (ArtImageSource *self, ArtRender *render, + ArtImageSourceFlags *p_flags, + int *p_buf_depth, ArtAlphaType *p_alpha) +{ + self->super.render = art_render_pattern_render; + *p_flags = 0; + *p_buf_depth = render->depth; + *p_alpha = ART_ALPHA_SEPARATE; +} + +void +art_render_pattern (ArtRender *render, + const ArtPattern *pattern, + ArtFilterLevel level) +{ + ArtImageSourcePattern *image_source = art_new (ArtImageSourcePattern, 1); + + image_source->super.super.render = NULL; + image_source->super.super.done = art_render_pattern_done; + image_source->super.negotiate = art_render_pattern_negotiate; + + image_source->pattern = pattern; + + art_render_add_image_source (render, &image_source->super); +} diff --git a/karbon/render/art_render_pattern.h b/karbon/render/art_render_pattern.h new file mode 100644 index 00000000..c70b76c6 --- /dev/null +++ b/karbon/render/art_render_pattern.h @@ -0,0 +1,58 @@ +/* + * art_render_pattern.h: + * + * Libart_LGPL - library of basic graphic primitives + * Copyright (C) 2000 Raph Levien + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + * + */ + +#ifndef __ART_RENDER_PATTERN_H__ +#define __ART_RENDER_PATTERN_H__ + +#ifdef LIBART_COMPILATION +#include "art_filterlevel.h" +#include "art_render.h" +#else +#include <libart_lgpl/art_filterlevel.h> +#include <libart_lgpl/art_render.h> +#endif + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + +typedef struct _ArtPattern ArtPattern; + +struct _ArtPattern { + unsigned int twidth; /* width of tile */ + unsigned int theight; /* height of tile */ + art_u8 opacity; /* opacity level */ + double angle; + art_u8 *buffer; /* image source */ +}; + +void +art_render_pattern (ArtRender *render, + const ArtPattern *pattern, + ArtFilterLevel level); + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif /* __ART_RENDER_PATTERN_H__ */ diff --git a/karbon/render/art_rgb.c b/karbon/render/art_rgb.c new file mode 100644 index 00000000..4d30fad4 --- /dev/null +++ b/karbon/render/art_rgb.c @@ -0,0 +1,174 @@ +/* Libart_LGPL - library of basic graphic primitives + * Copyright (C) 1998 Raph Levien + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + */ + +#include "config.h" +#include "art_rgb.h" + +#include <string.h> /* for memset */ + +/* Basic operators for manipulating 24-bit packed RGB buffers. */ + +#define COLOR_RUN_SIMPLE + +#ifdef COLOR_RUN_SIMPLE +/* This is really slow. Is there any way we might speed it up? + Two ideas: + + First, maybe we should be working at 32-bit alignment. Then, + this can be a simple loop over word stores. + + Second, we can keep working at 24-bit alignment, but have some + intelligence about storing. For example, we can iterate over + 4-pixel chunks (aligned at 4 pixels), with an inner loop + something like: + + *buf++ = v1; + *buf++ = v2; + *buf++ = v3; + + One source of extra complexity is the need to make sure linebuf is + aligned to a 32-bit boundary. + + This second alternative has some complexity to it, but is + appealing because it really minimizes the memory bandwidth. */ +void +art_rgb_fill_run_ (art_u8 *buf, art_u32 rgb, int n) +{ + int i; + art_u32 *b = (art_u32 *)buf; + for (i = 0; i < n; i++) + { + *b = rgb; + b++; + } +} +#endif + +#ifdef COLOR_RUN_COMPLEX +/* This implements the second of the two ideas above. The test results + are _very_ encouraging - it seems the speed is within 10% of + memset, which is quite good! */ +/** + * art_rgb_fill_run: fill a buffer a solid RGB color. + * @buf: Buffer to fill. + * @r: Red, range 0..255. + * @g: Green, range 0..255. + * @b: Blue, range 0..255. + * @n: Number of RGB triples to fill. + * + * Fills a buffer with @n copies of the (@r, @g, @b) triple. Thus, + * locations @buf (inclusive) through @buf + 3 * @n (exclusive) are + * written. + * + * The implementation of this routine is very highly optimized. + **/ +void +art_rgb_fill_run_ (art_u8 *buf, art_u32 rgb, int n) +{ + int i; + unsigned int v1, v2, v3; + + if (r == g && g == b) + { + memset (buf, g, 4*n); + } + else + { + if (n < 8) + { + for (i = 0; i < n; i++) + { + buf++; + *buf++ = r; + *buf++ = g; + *buf++ = b; + } + } else { + /* handle prefix up to byte alignment */ + /* I'm worried about this cast on sizeof(long) != sizeof(uchar *) + architectures, but it _should_ work. */ + for (i = 0; ((unsigned long)buf) & 3; i++) + { + buf++; + *buf++ = r; + *buf++ = g; + *buf++ = b; + } +#ifndef WORDS_BIGENDIAN + v1 = r | (g << 8) | (b << 16) | (r << 24); + v3 = (v1 << 8) | b; + v2 = (v3 << 8) | g; +#else + v1 = (r << 24) | (g << 16) | (b << 8) | r; + v2 = (v1 << 8) | g; + v3 = (v2 << 8) | b; +#endif + for (; i < n - 3; i += 4) + {/* + ((art_u32 *)buf)[0] = v1; + ((art_u32 *)buf)[1] = v2; + ((art_u32 *)buf)[2] = v3; + buf += 12;*/ + ((art_u32 *)buf)[1] = v1; + ((art_u32 *)buf)[2] = v2; + ((art_u32 *)buf)[3] = v3; + buf += 16; + } + /* handle postfix */ + for (; i < n; i++) + { + buf++; + *buf++ = r; + *buf++ = g; + *buf++ = b; + } + } + } +} +#endif + +/** + * art_rgb_run_alpha: Render semitransparent color over RGB buffer. + * @buf: Buffer for rendering. + * @r: Red, range 0..255. + * @g: Green, range 0..255. + * @b: Blue, range 0..255. + * @alpha: Alpha, range 0..256. + * @n: Number of RGB triples to render. + * + * Renders a sequential run of solid (@r, @g, @b) color over @buf with + * opacity @alpha. + **/ +void +art_rgb_run_alpha_ (art_u8 *buf, art_u8 r, art_u8 g, art_u8 b, int alpha, int n) +{ + int i; + int v; + for (i = 0; i < n; i++) + { + v = *buf; + *buf++ = v + (((b - v) * alpha + 0x80) >> 8); + v = *buf; + *buf++ = v + (((g - v) * alpha + 0x80) >> 8); + v = *buf; + *buf++ = v + (((r - v) * alpha + 0x80) >> 8); + buf++; + } +} + diff --git a/karbon/render/art_rgb.h b/karbon/render/art_rgb.h new file mode 100644 index 00000000..1f2c6919 --- /dev/null +++ b/karbon/render/art_rgb.h @@ -0,0 +1,44 @@ +/* Libart_LGPL - library of basic graphic primitives + * Copyright (C) 1998 Raph Levien + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + */ + +#ifndef __ART_RGB_H__ +#define __ART_RGB_H__ + +#ifdef LIBART_COMPILATION +#include "art_misc.h" +#else +#include <libart_lgpl/art_misc.h> +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +void +art_rgb_fill_run_ (art_u8 *buf, art_u32 rgb, int n); + +void +art_rgb_run_alpha_ (art_u8 *buf, art_u8 r, art_u8 g, art_u8 b, int alpha, + int n); + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/karbon/render/art_rgb_affine_private.c b/karbon/render/art_rgb_affine_private.c new file mode 100644 index 00000000..4a92a301 --- /dev/null +++ b/karbon/render/art_rgb_affine_private.c @@ -0,0 +1,127 @@ +/* Libart_LGPL - library of basic graphic primitives + * Copyright (C) 1998 Raph Levien + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + */ + +#include "config.h" +#include "art_rgb_affine_private.h" + +#include <math.h> +#include <libart_lgpl/art_misc.h> +#include <libart_lgpl/art_point.h> +#include <libart_lgpl/art_affine.h> + +/* Private functions for the rgb affine image compositors - primarily, + the determination of runs, eliminating the need for source image + bbox calculation in the inner loop. */ + +/* Determine a "run", such that the inverse affine of all pixels from + (x0, y) inclusive to (x1, y) exclusive fit within the bounds + of the source image. + + Initial values of x0, x1, and result values stored in first two + pointer arguments. +*/ + +#define EPSILON 1e-6 + +void +art_rgb_affine_run (int *p_x0, int *p_x1, int y, + int src_width, int src_height, + const double affine[6]) +{ + int x0, x1; + double z; + double x_intercept; + int xi; + + x0 = *p_x0; + x1 = *p_x1; + + /* do left and right edges */ + if (affine[0] > EPSILON) + { + z = affine[2] * (y + 0.5) + affine[4]; + x_intercept = -z / affine[0]; + xi = ceil (x_intercept + EPSILON - 0.5); + if (xi > x0) + x0 = xi; + x_intercept = (-z + src_width) / affine[0]; + xi = ceil (x_intercept - EPSILON - 0.5); + if (xi < x1) + x1 = xi; + } + else if (affine[0] < -EPSILON) + { + z = affine[2] * (y + 0.5) + affine[4]; + x_intercept = (-z + src_width) / affine[0]; + xi = ceil (x_intercept + EPSILON - 0.5); + if (xi > x0) + x0 = xi; + x_intercept = -z / affine[0]; + xi = ceil (x_intercept - EPSILON - 0.5); + if (xi < x1) + x1 = xi; + } + else + { + z = affine[2] * (y + 0.5) + affine[4]; + if (z < 0 || z >= src_width) + { + *p_x1 = *p_x0; + return; + } + } + + /* do top and bottom edges */ + if (affine[1] > EPSILON) + { + z = affine[3] * (y + 0.5) + affine[5]; + x_intercept = -z / affine[1]; + xi = ceil (x_intercept + EPSILON - 0.5); + if (xi > x0) + x0 = xi; + x_intercept = (-z + src_height) / affine[1]; + xi = ceil (x_intercept - EPSILON - 0.5); + if (xi < x1) + x1 = xi; + } + else if (affine[1] < -EPSILON) + { + z = affine[3] * (y + 0.5) + affine[5]; + x_intercept = (-z + src_height) / affine[1]; + xi = ceil (x_intercept + EPSILON - 0.5); + if (xi > x0) + x0 = xi; + x_intercept = -z / affine[1]; + xi = ceil (x_intercept - EPSILON - 0.5); + if (xi < x1) + x1 = xi; + } + else + { + z = affine[3] * (y + 0.5) + affine[5]; + if (z < 0 || z >= src_height) + { + *p_x1 = *p_x0; + return; + } + } + + *p_x0 = x0; + *p_x1 = x1; +} diff --git a/karbon/render/art_rgb_affine_private.h b/karbon/render/art_rgb_affine_private.h new file mode 100644 index 00000000..a2424999 --- /dev/null +++ b/karbon/render/art_rgb_affine_private.h @@ -0,0 +1,39 @@ +/* Libart_LGPL - library of basic graphic primitives + * Copyright (C) 1998 Raph Levien + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + */ + +#ifndef __ART_RGB_AFFINE_PRIVATE_H__ +#define __ART_RGB_AFFINE_PRIVATE_H__ + +/* This module handles compositing of affine-transformed rgb images + over rgb pixel buffers. */ + +#ifdef __cplusplus +extern "C" { +#endif + +void +art_rgb_affine_run (int *p_x0, int *p_x1, int y, + int src_width, int src_height, + const double affine[6]); + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/karbon/render/art_rgb_svp.c b/karbon/render/art_rgb_svp.c new file mode 100644 index 00000000..617f1abe --- /dev/null +++ b/karbon/render/art_rgb_svp.c @@ -0,0 +1,458 @@ +/* Libart_LGPL - library of basic graphic primitives + * Copyright (C) 1998 Raph Levien + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + */ + +/* Render a sorted vector path into an RGB buffer. */ + +#include "config.h" +#include "art_rgb_svp.h" + +#include <libart_lgpl/art_svp.h> +#include <libart_lgpl/art_svp_render_aa.h> +#include "art_rgb.h" + +typedef struct _ArtRgbSVPData ArtRgbSVPData; +typedef struct _ArtRgbSVPAlphaData ArtRgbSVPAlphaData; + +struct _ArtRgbSVPData { + art_u32 rgbtab[256]; + art_u8 *buf; + int rowstride; + int x0, x1; +}; + +struct _ArtRgbSVPAlphaData { + int alphatab[256]; + art_u8 r, g, b, alpha; + art_u32 rgb; + art_u8 *buf; + int rowstride; + int x0, x1; +}; + +static void +art_rgb_svp_callback_ (void *callback_data, int y, + int start, ArtSVPRenderAAStep *steps, int n_steps) +{ + ArtRgbSVPData *data = (ArtRgbSVPData *)callback_data; + art_u8 *linebuf; + int run_x0, run_x1; + art_u32 running_sum = start; + art_u32 rgb; + int x0, x1; + int k; + + linebuf = data->buf; + x0 = data->x0; + x1 = data->x1; + + if (n_steps > 0) + { + run_x1 = steps[0].x; + if (run_x1 > x0) + { + rgb = data->rgbtab[(running_sum >> 16) & 0xff]; +/* art_rgb_fill_run (linebuf, + rgb >> 16, (rgb >> 8) & 0xff, rgb & 0xff, + run_x1 - x0);*/ + } + + for (k = 0; k < n_steps - 1; k++) + { + running_sum += steps[k].delta; + run_x0 = run_x1; + run_x1 = steps[k + 1].x; + if (run_x1 > run_x0) + { + rgb = data->rgbtab[(running_sum >> 16) & 0xff]; +/* art_rgb_fill_run (linebuf + (run_x0 - x0) * 3, + rgb >> 16, (rgb >> 8) & 0xff, rgb & 0xff, + run_x1 - run_x0);*/ + } + } + running_sum += steps[k].delta; + if (x1 > run_x1) + { + rgb = data->rgbtab[(running_sum >> 16) & 0xff]; +/* art_rgb_fill_run (linebuf + (run_x1 - x0) * 3, + rgb >> 16, (rgb >> 8) & 0xff, rgb & 0xff, + x1 - run_x1);*/ + } + } + else + { + rgb = data->rgbtab[(running_sum >> 16) & 0xff]; +/* art_rgb_fill_run (linebuf, + rgb >> 16, (rgb >> 8) & 0xff, rgb & 0xff, + x1 - x0);*/ + } + + data->buf += data->rowstride; +} + +/* Render the vector path into the RGB buffer. */ + +/** + * art_rgb_svp_aa: Render sorted vector path into RGB buffer. + * @svp: The source sorted vector path. + * @x0: Left coordinate of destination rectangle. + * @y0: Top coordinate of destination rectangle. + * @x1: Right coordinate of destination rectangle. + * @y1: Bottom coordinate of destination rectangle. + * @fg_color: Foreground color in 0xRRGGBB format. + * @bg_color: Background color in 0xRRGGBB format. + * @buf: Destination RGB buffer. + * @rowstride: Rowstride of @buf buffer. + * @alphagamma: #ArtAlphaGamma for gamma-correcting the rendering. + * + * Renders the shape specified with @svp into the @buf RGB buffer. + * @x1 - @x0 specifies the width, and @y1 - @y0 specifies the height, + * of the rectangle rendered. The new pixels are stored starting at + * the first byte of @buf. Thus, the @x0 and @y0 parameters specify + * an offset within @svp, and may be tweaked as a way of doing + * integer-pixel translations without fiddling with @svp itself. + * + * The @fg_color and @bg_color arguments specify the opaque colors to + * be used for rendering. For pixels of entirely 0 winding-number, + * @bg_color is used. For pixels of entirely 1 winding number, + * @fg_color is used. In between, the color is interpolated based on + * the fraction of the pixel with a winding number of 1. If + * @alphagamma is NULL, then linear interpolation (in pixel counts) is + * the default. Otherwise, the interpolation is as specified by + * @alphagamma. + **/ +void +art_rgb_svp_aa_ (const ArtSVP *svp, + int x0, int y0, int x1, int y1, + art_u32 fg_color, art_u32 bg_color, + art_u8 *buf, int rowstride, + ArtAlphaGamma *alphagamma) +{ + ArtRgbSVPData data; + + int r_fg, g_fg, b_fg; + int r_bg, g_bg, b_bg; + int r, g, b; + int dr, dg, db; + int i; + + if (alphagamma == NULL) + { + r_fg = fg_color >> 16; + g_fg = (fg_color >> 8) & 0xff; + b_fg = fg_color & 0xff; + + r_bg = bg_color >> 16; + g_bg = (bg_color >> 8) & 0xff; + b_bg = bg_color & 0xff; + + r = (r_bg << 16) + 0x8000; + g = (g_bg << 16) + 0x8000; + b = (b_bg << 16) + 0x8000; + dr = ((r_fg - r_bg) << 16) / 255; + dg = ((g_fg - g_bg) << 16) / 255; + db = ((b_fg - b_bg) << 16) / 255; + + for (i = 0; i < 256; i++) + { + data.rgbtab[i] = (r & 0xff0000) | ((g & 0xff0000) >> 8) | (b >> 16); + r += dr; + g += dg; + b += db; + } + } + else + { + int *table; + art_u8 *invtab; + + table = alphagamma->table; + + r_fg = table[fg_color >> 16]; + g_fg = table[(fg_color >> 8) & 0xff]; + b_fg = table[fg_color & 0xff]; + + r_bg = table[bg_color >> 16]; + g_bg = table[(bg_color >> 8) & 0xff]; + b_bg = table[bg_color & 0xff]; + + r = (r_bg << 16) + 0x8000; + g = (g_bg << 16) + 0x8000; + b = (b_bg << 16) + 0x8000; + dr = ((r_fg - r_bg) << 16) / 255; + dg = ((g_fg - g_bg) << 16) / 255; + db = ((b_fg - b_bg) << 16) / 255; + + invtab = alphagamma->invtable; + for (i = 0; i < 256; i++) + { + data.rgbtab[i] = (invtab[r >> 16] << 16) | + (invtab[g >> 16] << 8) | + invtab[b >> 16]; + r += dr; + g += dg; + b += db; + } + } + data.buf = buf; + data.rowstride = rowstride; + data.x0 = x0; + data.x1 = x1; + art_svp_render_aa (svp, x0, y0, x1, y1, art_rgb_svp_callback_, &data); +} + +static void +art_rgb_svp_alpha_callback_ (void *callback_data, int y, + int start, ArtSVPRenderAAStep *steps, int n_steps) +{ + ArtRgbSVPAlphaData *data = (ArtRgbSVPAlphaData *)callback_data; + art_u8 *linebuf; + int run_x0, run_x1; + art_u32 running_sum = start; + int x0, x1; + int k; + art_u8 r, g, b; + int *alphatab; + int alpha; + + linebuf = data->buf; + x0 = data->x0; + x1 = data->x1; + + r = data->r; + g = data->g; + b = data->b; + alphatab = data->alphatab; + + if (n_steps > 0) + { + run_x1 = steps[0].x; + if (run_x1 > x0) + { + alpha = (running_sum >> 16) & 0xff; + if (alpha) + art_rgb_run_alpha_ (linebuf, + r, g, b, alphatab[alpha], + run_x1 - x0); + } + + for (k = 0; k < n_steps - 1; k++) + { + running_sum += steps[k].delta; + run_x0 = run_x1; + run_x1 = steps[k + 1].x; + if (run_x1 > run_x0) + { + alpha = (running_sum >> 16) & 0xff; + if (alpha) + art_rgb_run_alpha_ (linebuf + (run_x0 - x0) * 4, + r, g, b, alphatab[alpha], + run_x1 - run_x0); + } + } + running_sum += steps[k].delta; + if (x1 > run_x1) + { + alpha = (running_sum >> 16) & 0xff; + if (alpha) + art_rgb_run_alpha_ (linebuf + (run_x1 - x0) * 4, + r, g, b, alphatab[alpha], + x1 - run_x1); + } + } + else + { + alpha = (running_sum >> 16) & 0xff; + if (alpha) + art_rgb_run_alpha_ (linebuf, + r, g, b, alphatab[alpha], + x1 - x0); + } + + data->buf += data->rowstride; +} + +static void +art_rgb_svp_alpha_opaque_callback_ (void *callback_data, int y, + int start, + ArtSVPRenderAAStep *steps, int n_steps) +{ + ArtRgbSVPAlphaData *data = (ArtRgbSVPAlphaData *)callback_data; + art_u8 *linebuf; + int run_x0, run_x1; + art_u32 running_sum = start; + int x0, x1; + int k; + art_u8 r, g, b; + art_u32 rgb; + int *alphatab; + int alpha; + + linebuf = data->buf; + x0 = data->x0; + x1 = data->x1; + + r = data->r; + g = data->g; + b = data->b; + rgb = data->rgb; + alphatab = data->alphatab; + + if (n_steps > 0) + { + run_x1 = steps[0].x; + if (run_x1 > x0) + { + alpha = running_sum >> 16; + if (alpha) + { + if (alpha >= 255) + art_rgb_fill_run_ (linebuf, + rgb, + run_x1 - x0); + else + art_rgb_run_alpha_ (linebuf, + r, g, b, alphatab[alpha], + run_x1 - x0); + } + } + + for (k = 0; k < n_steps - 1; k++) + { + running_sum += steps[k].delta; + run_x0 = run_x1; + run_x1 = steps[k + 1].x; + if (run_x1 > run_x0) + { + alpha = running_sum >> 16; + if (alpha) + { + if (alpha >= 255) + art_rgb_fill_run_ (linebuf + (run_x0 - x0) * 4, + rgb, + run_x1 - run_x0); + else + art_rgb_run_alpha_ (linebuf + (run_x0 - x0) * 4, + r, g, b, alphatab[alpha], + run_x1 - run_x0); + } + } + } + running_sum += steps[k].delta; + if (x1 > run_x1) + { + alpha = running_sum >> 16; + if (alpha) + { + if (alpha >= 255) + art_rgb_fill_run_ (linebuf + (run_x1 - x0) * 4, + rgb, + x1 - run_x1); + else + art_rgb_run_alpha_ (linebuf + (run_x1 - x0) * 4, + r, g, b, alphatab[alpha], + x1 - run_x1); + } + } + } + else + { + alpha = running_sum >> 16; + if (alpha) + { + if (alpha >= 255) + art_rgb_fill_run_ (linebuf, + rgb, + x1 - x0); + else + art_rgb_run_alpha_ (linebuf, + r, g, b, alphatab[alpha], + x1 - x0); + } + } + data->buf += data->rowstride; +} + +/** + * art_rgb_svp_alpha: Alpha-composite sorted vector path over RGB buffer. + * @svp: The source sorted vector path. + * @x0: Left coordinate of destination rectangle. + * @y0: Top coordinate of destination rectangle. + * @x1: Right coordinate of destination rectangle. + * @y1: Bottom coordinate of destination rectangle. + * @rgba: Color in 0xRRGGBBAA format. + * @buf: Destination RGB buffer. + * @rowstride: Rowstride of @buf buffer. + * @alphagamma: #ArtAlphaGamma for gamma-correcting the compositing. + * + * Renders the shape specified with @svp over the @buf RGB buffer. + * @x1 - @x0 specifies the width, and @y1 - @y0 specifies the height, + * of the rectangle rendered. The new pixels are stored starting at + * the first byte of @buf. Thus, the @x0 and @y0 parameters specify + * an offset within @svp, and may be tweaked as a way of doing + * integer-pixel translations without fiddling with @svp itself. + * + * The @rgba argument specifies the color for the rendering. Pixels of + * entirely 0 winding number are left untouched. Pixels of entirely + * 1 winding number have the color @rgba composited over them (ie, + * are replaced by the red, green, blue components of @rgba if the alpha + * component is 0xff). Pixels of intermediate coverage are interpolated + * according to the rule in @alphagamma, or default to linear if + * @alphagamma is NULL. + **/ +void +art_rgb_svp_alpha_ (const ArtSVP *svp, + int x0, int y0, int x1, int y1, + art_u32 rgb, int alpha, + art_u8 *buf, int rowstride, + ArtAlphaGamma *alphagamma) +{ + ArtRgbSVPAlphaData data; + int r, g, b; + int i; + int a, da; + + r = (rgb >> 16) & 0xff; + g = (rgb >> 8) & 0xff; + b = rgb & 0xff; + + data.r = r; + data.g = g; + data.b = b; + data.alpha = alpha; + data.rgb = rgb; + + a = 0x8000; + da = (alpha * 66051 + 0x80) >> 8; /* 66051 equals 2 ^ 32 / (255 * 255) */ + + for (i = 0; i < 256; i++) + { + data.alphatab[i] = a >> 16; + a += da; + } + + data.buf = buf; + data.rowstride = rowstride; + data.x0 = x0; + data.x1 = x1; + if (alpha == 255) + art_svp_render_aa (svp, x0, y0, x1, y1, art_rgb_svp_alpha_opaque_callback_, + &data); + else + art_svp_render_aa (svp, x0, y0, x1, y1, art_rgb_svp_alpha_callback_, &data); +} diff --git a/karbon/render/art_rgb_svp.h b/karbon/render/art_rgb_svp.h new file mode 100644 index 00000000..77b32dd9 --- /dev/null +++ b/karbon/render/art_rgb_svp.h @@ -0,0 +1,55 @@ +/* Libart_LGPL - library of basic graphic primitives + * Copyright (C) 1998 Raph Levien + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + */ + +#ifndef __ART_RGB_SVP_H__ +#define __ART_RGB_SVP_H__ + +/* Render a sorted vector path into an RGB buffer. */ + +#ifdef LIBART_COMPILATION +#include "art_alphagamma.h" +#include "art_svp.h" +#else +#include <libart_lgpl/art_alphagamma.h> +#include <libart_lgpl/art_svp.h> +#endif + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + +void +art_rgb_svp_aa_ (const ArtSVP *svp, + int x0, int y0, int x1, int y1, + art_u32 fg_color, art_u32 bg_color, + art_u8 *buf, int rowstride, + ArtAlphaGamma *alphagamma); + +void +art_rgb_svp_alpha_ (const ArtSVP *svp, + int x0, int y0, int x1, int y1, + art_u32 rgb, int alpha, + art_u8 *buf, int rowstride, + ArtAlphaGamma *alphagamma); + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif /* __ART_RGB_SVP_H__ */ diff --git a/karbon/render/art_rgba_affine.c b/karbon/render/art_rgba_affine.c new file mode 100644 index 00000000..9ff88d5f --- /dev/null +++ b/karbon/render/art_rgba_affine.c @@ -0,0 +1,107 @@ +/* Libart_LGPL - library of basic graphic primitives + * Copyright (C) 1998 Raph Levien + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + */ + +#include "config.h" +#include "art_rgba_affine.h" + +#include <math.h> +#include <libart_lgpl/art_misc.h> +#include <libart_lgpl/art_point.h> +#include <libart_lgpl/art_affine.h> +#include <art_rgb_affine_private.h> + +/* This module handles compositing of affine-transformed rgb images + over rgb pixel buffers. */ + +/** + * art_rgb_affine: Affine transform source RGB image and composite. + * @dst: Destination image RGB buffer. + * @x0: Left coordinate of destination rectangle. + * @y0: Top coordinate of destination rectangle. + * @x1: Right coordinate of destination rectangle. + * @y1: Bottom coordinate of destination rectangle. + * @dst_rowstride: Rowstride of @dst buffer. + * @src: Source image RGB buffer. + * @src_width: Width of source image. + * @src_height: Height of source image. + * @src_rowstride: Rowstride of @src buffer. + * @affine: Affine transform. + * @level: Filter level. + * @alphagamma: #ArtAlphaGamma for gamma-correcting the compositing. + * + * Affine transform the source image stored in @src, compositing over + * the area of destination image @dst specified by the rectangle + * (@x0, @y0) - (@x1, @y1). As usual in libart, the left and top edges + * of this rectangle are included, and the right and bottom edges are + * excluded. + * + * The @alphagamma parameter specifies that the alpha compositing be done + * in a gamma-corrected color space. Since the source image is opaque RGB, + * this argument only affects the edges. In the current implementation, + * it is ignored. + * + * The @level parameter specifies the speed/quality tradeoff of the + * image interpolation. Currently, only ART_FILTER_NEAREST is + * implemented. + **/ +void +art_rgba_affine (art_u8 *dst, int x0, int y0, int x1, int y1, int dst_rowstride, + const art_u8 *src, + int src_width, int src_height, int src_rowstride, + const double affine[6], + ArtFilterLevel level, + ArtAlphaGamma *alphagamma) +{ + /* Note: this is a slow implementation, and is missing all filter + levels other than NEAREST. It is here for clarity of presentation + and to establish the interface. */ + int x, y; + double inv[6]; + art_u8 *dst_p, *dst_linestart; + const art_u8 *src_p; + ArtPoint pt, src_pt; + int src_x, src_y; + int run_x0, run_x1; + + dst_linestart = dst; + art_affine_invert (inv, affine); + for (y = y0; y < y1; y++) + { + pt.y = y + 0.5; + run_x0 = x0; + run_x1 = x1; + art_rgb_affine_run (&run_x0, &run_x1, y, src_width, src_height, + inv); + dst_p = dst_linestart + (run_x0 - x0) * 4; + for (x = run_x0; x < run_x1; x++) + { + pt.x = x + 0.5; + art_affine_point (&src_pt, &pt, inv); + src_x = floor (src_pt.x); + src_y = floor (src_pt.y); + src_p = src + (src_y * src_rowstride) + src_x * 4; + dst_p[0] = src_p[0]; + dst_p[1] = src_p[1]; + dst_p[2] = src_p[2]; + dst_p[3] = src_p[3]; + dst_p += 4; + } + dst_linestart += dst_rowstride; + } +} diff --git a/karbon/render/art_rgba_affine.h b/karbon/render/art_rgba_affine.h new file mode 100644 index 00000000..3403691b --- /dev/null +++ b/karbon/render/art_rgba_affine.h @@ -0,0 +1,50 @@ +/* Libart_LGPL - library of basic graphic primitives + * Copyright (C) 1998 Raph Levien + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + */ + +#ifndef __ART_RGB_AFFINE_H__ +#define __ART_RGB_AFFINE_H__ + +/* This module handles compositing of affine-transformed rgb images + over rgb pixel buffers. */ + +#ifdef LIBART_COMPILATION +#include "art_filterlevel.h" +#include "art_alphagamma.h" +#else +#include <libart_lgpl/art_filterlevel.h> +#include <libart_lgpl/art_alphagamma.h> +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +void +art_rgba_affine (art_u8 *dst, int x0, int y0, int x1, int y1, int dst_rowstride, + const art_u8 *src, + int src_width, int src_height, int src_rowstride, + const double affine[6], + ArtFilterLevel level, + ArtAlphaGamma *alphagamma); + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/karbon/render/vkopainter.cc b/karbon/render/vkopainter.cc new file mode 100644 index 00000000..21ab911c --- /dev/null +++ b/karbon/render/vkopainter.cc @@ -0,0 +1,943 @@ +/* This file is part of the KDE project. + Copyright (C) 2001, 2002, 2003 The Karbon Developers + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public License + along with this library; see the file COPYING.LIB. If not, write to + the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. +*/ + +// kopainter/libart wrapper + +#include "vkopainter.h" +#include "vstroke.h" +#include "vfill.h" +#include "vcolor.h" +#include "vpattern.h" + +#include <qpaintdevice.h> +#include <qpixmap.h> +#include <qpointarray.h> +#include <qimage.h> + +#include "libart_lgpl/art_vpath.h" +#include <libart_lgpl/art_bpath.h> +#include <libart_lgpl/art_vpath_bpath.h> +#include <libart_lgpl/art_svp_vpath.h> +#include <libart_lgpl/art_svp_vpath_stroke.h> +#include <libart_lgpl/art_svp.h> +#include <libart_lgpl/art_svp_ops.h> +#include <libart_lgpl/art_affine.h> +#include <libart_lgpl/art_svp_intersect.h> +#include <libart_lgpl/art_rect_svp.h> +#include <libart_lgpl/art_pathcode.h> +#include <libart_lgpl/art_vpath_dash.h> +#include "art_rgba_affine.h" +#include "art_render_misc.h" +#include <libart_lgpl/art_render_svp.h> + +#include "art_rgb_svp.h" +#include "art_render_pattern.h" + +#include <X11/Xlib.h> + +#include <gdk-pixbuf-xlibrgb.h> + +#include <kdebug.h> +#include <kglobal.h> +#include <kiconloader.h> +#include <math.h> + +#include <KoPoint.h> +#include <KoRect.h> +#include <karbon_factory.h> +#include <karbon_resourceserver.h> + + +#define INITIAL_ALLOC 300 +#define ALLOC_INCREMENT 100 + +VKoPainter::VKoPainter( QPaintDevice *target, unsigned int w, unsigned int h, bool bDrawNodes ) +: VPainter( target, w, h ), m_target( target ), m_bDrawNodes( bDrawNodes ) +{ + //kdDebug(38000) << "w : " << w << endl; + //kdDebug(38000) << "h : " << h << endl; + m_width = w;//( w > 0 ) ? w : target->width(); + m_height= h;//( h > 0 ) ? h : target->height(); + m_buffer = 0L; + m_path = 0L; + m_index = 0; + resize( m_width, m_height ); + clear(); + m_clipPaths.setAutoDelete( false ); + + m_stroke = 0L; + m_fill = 0L; + m_fillRule = evenOdd; + + xlib_rgb_init_with_depth( target->x11Display(), XScreenOfDisplay( target->x11Display(), + target->x11Screen() ), target->x11Depth() ); + + gc = XCreateGC( target->x11Display(), target->handle(), 0, 0 ); + + m_zoomFactor = 1; +} + +VKoPainter::VKoPainter( unsigned char *buffer, unsigned int w, unsigned int h, bool bDrawNodes ) +: VPainter( 0L, w, h ), m_buffer( buffer ), m_bDrawNodes( bDrawNodes ) +{ + //kdDebug(38000) << "w : " << w << endl; + //kdDebug(38000) << "h : " << h << endl; + m_target = 0L; + m_width = w; + m_height= h; + m_path = 0L; + m_index = 0; + clear(); + m_clipPaths.setAutoDelete( false ); + + m_stroke = 0L; + m_fill = 0L; + + gc = 0L; + + m_zoomFactor = 1; +} + +VKoPainter::~VKoPainter() +{ + // If we are in target mode, we created a buffer, else if we used the other ctor + // we didn't. + if( m_target ) + art_free( m_buffer ); + + delete m_stroke; + delete m_fill; + if( m_path ) + art_free( m_path ); + + if( gc ) + XFreeGC( m_target->x11Display(), gc ); +} + +void +VKoPainter::resize( unsigned int w, unsigned int h ) +{ + if( !m_buffer || w != m_width || h != m_height ) + { + // TODO : realloc? + art_free( m_buffer ); + m_buffer = 0; + m_width = w; + m_height = h; + if ( m_width != 0 && m_height != 0 ) + m_buffer = art_new( art_u8, m_width * m_height * 4 ); + clear(); + } +} + +void +VKoPainter::begin() +{ +} + +void +VKoPainter::end() +{ + //xlib_draw_rgb_image( m_target->handle(), gc, 0, 0, m_width, m_height, + // XLIB_RGB_DITHER_NONE, m_buffer, m_width * 4 ); + xlib_draw_rgb_32_image( m_target->handle(), gc, 0, 0, m_width, m_height, + XLIB_RGB_DITHER_NONE, m_buffer, m_width * 4 ); + /*xlib_draw_rgb_image( pix.handle(), gc, 0, 0, m_width, m_height, + XLIB_RGB_DITHER_NONE, m_buffer, m_width * 3 ); + bitBlt( m_target, 0, 0, &pix, 0, 0, m_width, m_height );*/ +} + +void +VKoPainter::blit( const KoRect &r ) +{ + //kdDebug(38000) << "m_width : " << m_width << endl; + //kdDebug(38000) << "m_height : " << m_height << endl; + int x = KMAX( 0, int( r.x() ) ); + int y = KMAX( 0, int( r.y() ) ); + int width = KMIN( m_width, (unsigned int)KMAX( 0, int( r.x() + r.width() ) ) ); + int height = KMIN( m_height, (unsigned int)KMAX( 0, int( r.y() + r.height() ) ) ); + xlib_draw_rgb_32_image( m_target->handle(), gc, x, y, width - x, height - y, + XLIB_RGB_DITHER_NONE, m_buffer + (x * 4) + (y * m_width * 4), m_width * 4 ); +} + +void +VKoPainter::clear() +{ + if( m_buffer ) + memset( m_buffer, qRgba( 255, 255, 255, 255 ), m_width * m_height * 4 ); +} + +void +VKoPainter::clear( const QColor &c ) +{ + if( m_buffer ) + memset( m_buffer, c.rgb(), m_width * m_height * 4 ); +} + +void +VKoPainter::clear( const KoRect &r, const QColor &c ) +{ + unsigned int color = c.rgb(); + int x = KMAX( 0, int( r.x() ) ); + int y = KMAX( 0, int( r.y() ) ); + int width = KMIN( m_width, (unsigned int)KMAX( 0, int( r.x() + r.width() ) ) ); + int height = KMIN( m_height, (unsigned int)KMAX( 0, int( r.y() + r.height() ) ) ); + if( m_buffer ) + { + for( int i = y;i < height;i++) + memset( m_buffer + int( x * 4) + int( i * ( m_width * 4 ) ), + qRgba( qRed( color ), qGreen( color ), qBlue( color ), 100 ), int( width * 4 ) ); + } +} + +void +VKoPainter::setWorldMatrix( const QWMatrix &mat ) +{ + m_matrix = mat; +} + +void +VKoPainter::setZoomFactor( double zoomFactor ) +{ + m_zoomFactor = zoomFactor; +} + +void +VKoPainter::ensureSpace( unsigned int newindex ) +{ + if( m_index == 0 ) + { + if( !m_path ) + m_path = art_new( ArtBpath, INITIAL_ALLOC ); + m_alloccount = INITIAL_ALLOC; + } + else if( newindex > m_alloccount ) + { + m_alloccount += ALLOC_INCREMENT; + m_path = art_renew( m_path, ArtBpath, m_alloccount ); + } +} + +void +VKoPainter::moveTo( const KoPoint &p ) +{ + ensureSpace( m_index + 1 ); + + m_path[ m_index ].code = ART_MOVETO; + + m_path[ m_index ].x3 = p.x() * m_zoomFactor; + m_path[ m_index ].y3 = p.y() * m_zoomFactor; + + m_index++; +} + +void +VKoPainter::lineTo( const KoPoint &p ) +{ + ensureSpace( m_index + 1 ); + + m_path[ m_index ].code = ART_LINETO; + m_path[ m_index ].x3 = p.x() * m_zoomFactor; + m_path[ m_index ].y3 = p.y() * m_zoomFactor; + + m_index++; +} + +void +VKoPainter::curveTo( const KoPoint &p1, const KoPoint &p2, const KoPoint &p3 ) +{ + ensureSpace( m_index + 1 ); + + m_path[ m_index ].code = ART_CURVETO; + m_path[ m_index ].x1 = p1.x() * m_zoomFactor; + m_path[ m_index ].y1 = p1.y() * m_zoomFactor; + m_path[ m_index ].x2 = p2.x() * m_zoomFactor; + m_path[ m_index ].y2 = p2.y() * m_zoomFactor; + m_path[ m_index ].x3 = p3.x() * m_zoomFactor; + m_path[ m_index ].y3 = p3.y() * m_zoomFactor; + + m_index++; +} + +void +VKoPainter::newPath() +{ + m_index = 0; +} + +void +VKoPainter::setFillRule( VFillRule fillRule ) +{ + m_fillRule = fillRule; +} + +void +VKoPainter::fillPath() +{ + if( m_index == 0 ) return; + + // find begin of last subpath + int find = -1; + for( int i = m_index - 1; i >= 0; i-- ) + { + if( m_path[i].code == ART_MOVETO_OPEN || m_path[i].code == ART_MOVETO ) + { + find = i; + break; + } + } + + // for now, always close + if( find != -1 && ( m_path[ find ].x3 != m_path[ m_index - 1 ].x3 || + m_path[ find ].y3 != m_path[ m_index - 1 ].y3 ) ) + { + ensureSpace( m_index + 1 ); + + m_path[ m_index ].code = ART_LINETO; + m_path[ m_index ].x3 = m_path[ find ].x3; + m_path[ m_index ].y3 = m_path[ find ].y3; + + m_index++; + m_path[ m_index ].code = ART_END; + } + else + m_path[ m_index++ ].code = ART_END; + + if( m_fill && m_fill->type() != VFill::none ) + { + ArtVpath *path = art_bez_path_to_vec( m_path , 0.25 ); + drawVPath( path ); + } + + m_index--; +} + +void +VKoPainter::strokePath() +{ + if( m_index == 0 ) return; + + if( m_stroke && m_stroke->lineWidth() == 0 ) + return; + if( m_path[ m_index ].code != ART_END) + m_path[ m_index ].code = ART_END; + + ArtVpath *path = art_bez_path_to_vec( m_path , 0.25 ); + + drawVPath( path ); +} + +void +VKoPainter::setClipPath() +{ + ArtVpath *path; + path = art_bez_path_to_vec( m_path , 0.25 ); + m_clipPaths.append( art_svp_from_vpath( path ) ); + art_free( path ); +} + +void +VKoPainter::resetClipPath() +{ + art_svp_free( m_clipPaths.current() ); + m_clipPaths.remove(); +} + +void +VKoPainter::setPen( const VStroke &stroke ) +{ + delete m_stroke; + m_stroke = new VStroke; + *m_stroke = stroke; +} + +void +VKoPainter::setPen( const QColor &c ) +{ + delete m_stroke; + m_stroke = new VStroke; + + float r = static_cast<float>( c.red() ) / 255.0; + float g = static_cast<float>( c.green() ) / 255.0; + float b = static_cast<float>( c.blue() ) / 255.0; + + VColor color; + color.set( r, g, b ); + m_stroke->setColor( color ); +} + +void +VKoPainter::setPen( Qt::PenStyle style ) +{ + if( style == Qt::NoPen ) + { + delete m_stroke; + m_stroke = 0L; + } +} + +void +VKoPainter::setBrush( const QColor &c ) +{ + delete m_fill; + m_fill = new VFill; + + float r = static_cast<float>( c.red() ) / 255.0; + float g = static_cast<float>( c.green() ) / 255.0; + float b = static_cast<float>( c.blue() ) / 255.0; + + VColor color; + color.set( r, g, b ); + m_fill->setColor( color ); +} + +void +VKoPainter::setBrush( Qt::BrushStyle style ) +{ + if( style == Qt::NoBrush ) + { + delete m_fill; + m_fill = 0L; + } +} + +void +VKoPainter::setBrush( const VFill &fill ) +{ + delete m_fill; + m_fill = new VFill; + *m_fill = fill; +} + +void +VKoPainter::save() +{ +} + +void +VKoPainter::restore() +{ +} + +void +VKoPainter::setRasterOp( Qt::RasterOp ) +{ +} + +void +VKoPainter::clampToViewport( int &x0, int &y0, int &x1, int &y1 ) +{ + // clamp to viewport + x0 = kMax( x0, 0 ); + x0 = kMin( x0, int( m_width ) ); + y0 = kMax( y0, 0 ); + y0 = kMin( y0, int ( m_height ) ); + x1 = kMax( x1, 0 ); + x1 = kMin( x1, int( m_width ) ); + y1 = kMax( y1, 0 ); + y1 = kMin( y1, int( m_height ) ); +} + +void +VKoPainter::clampToViewport( const ArtSVP &svp, int &x0, int &y0, int &x1, int &y1 ) +{ + // get SVP bbox + ArtDRect bbox; + art_drect_svp( &bbox, &svp ); + // Remove comments if we really decide for SVP bbox usage + //m_bbox = KoRect( bbox.x0, bbox.y0, bbox.x1 - bbox.x0, bbox.y1 - bbox.y0 ); + + // clamp to viewport + x0 = int( bbox.x0 ); + x0 = kMax( x0, 0 ); + x0 = kMin( x0, int( m_width ) ); + y0 = int( bbox.y0 ); + y0 = kMax( y0, 0 ); + y0 = kMin( y0, int ( m_height ) ); + x1 = int( bbox.x1 ) + 1; + x1 = kMax( x1, 0 ); + x1 = kMin( x1, int( m_width ) ); + y1 = int( bbox.y1 ) + 1; + y1 = kMax( y1, 0 ); + y1 = kMin( y1, int( m_height ) ); +} + +void +VKoPainter::drawVPath( ArtVpath *vec ) +{ + ArtSVP *strokeSvp = 0L; + ArtSVP *fillSvp = 0L; + + // set up world matrix + double affine[6]; + affine[0] = m_matrix.m11(); + affine[1] = 0;//m_matrix.m12(); + affine[2] = 0;//m_matrix.m21(); + affine[3] = m_matrix.m22(); + affine[4] = m_matrix.dx(); + affine[5] = m_matrix.dy(); + ArtVpath *temp = art_vpath_affine_transform( vec, affine ); + art_free( vec ); + vec = temp; + + int af = 0; + int as = 0; + art_u32 fillColor = 0; + + // filling + QColor color; + if( m_fill && m_fill->type() != VFill::none ) + { + color = m_fill->color(); + af = qRound( 255 * m_fill->color().opacity() ); + fillColor = ( 0 << 24 ) | ( color.blue() << 16 ) | ( color.green() << 8 ) | color.red(); + + ArtSvpWriter *swr; + ArtSVP *temp; + temp = art_svp_from_vpath( vec ); + + if( m_fillRule == evenOdd ) + swr = art_svp_writer_rewind_new( ART_WIND_RULE_ODDEVEN ); + else + swr = art_svp_writer_rewind_new( ART_WIND_RULE_NONZERO ); + + art_svp_intersector( temp, swr ); + fillSvp = art_svp_writer_rewind_reap( swr ); + + art_svp_free( temp ); + } + + art_u32 strokeColor = 0; + // stroke + if( m_stroke && m_stroke->type() != VStroke::none ) + { + ArtPathStrokeCapType capStyle = ART_PATH_STROKE_CAP_BUTT; + ArtPathStrokeJoinType joinStyle = ART_PATH_STROKE_JOIN_MITER; + // TODO : non rgb support ? + + color = m_stroke->color(); + as = qRound( 255 * m_stroke->color().opacity() ); + strokeColor = ( 0 << 24 ) | ( color.blue() << 16 ) | ( color.green() << 8 ) | color.red(); + + double ratio = m_zoomFactor;//sqrt(pow(affine[0], 2) + pow(affine[3], 2)) / sqrt(2); + if( m_stroke->dashPattern().array().count() > 0 ) + { + // there are dashes to be rendered + ArtVpathDash dash; + dash.offset = m_stroke->dashPattern().offset() * ratio; + dash.n_dash = m_stroke->dashPattern().array().count(); + double *dashes = new double[ dash.n_dash ]; + for( int i = 0; i < dash.n_dash; i++ ) + dashes[i] = m_stroke->dashPattern().array()[i] * ratio; + + dash.dash = dashes; + // get the dashed VPath and use that for the stroke render operation + ArtVpath *vec2 = art_vpath_dash( vec, &dash ); + art_free( vec ); + + vec = vec2; + delete [] dashes; + } + // caps translation karbon -> art + if( m_stroke->lineCap() == VStroke::capRound ) + capStyle = ART_PATH_STROKE_CAP_ROUND; + else if( m_stroke->lineCap() == VStroke::capSquare ) + capStyle = ART_PATH_STROKE_CAP_SQUARE; + + // join translation karbon -> art + if( m_stroke->lineJoin() == VStroke::joinRound ) + joinStyle = ART_PATH_STROKE_JOIN_ROUND; + else if( m_stroke->lineJoin() == VStroke::joinBevel ) + joinStyle = ART_PATH_STROKE_JOIN_BEVEL; + + // zoom stroke width; + strokeSvp = art_svp_vpath_stroke( vec, joinStyle, capStyle, ratio * m_stroke->lineWidth(), m_stroke->miterLimit(), 0.25 ); + } + + int x0, y0, x1, y1; + + // render the svp to the buffer + if( strokeSvp ) + { + if( m_stroke && m_stroke->type() == VStroke::grad ) + applyGradient( strokeSvp, false ); + else if( m_stroke && m_stroke->type() == VStroke::patt ) + applyPattern( strokeSvp, false ); + else + { + clampToViewport( *strokeSvp, x0, y0, x1, y1 ); + if( x0 != x1 && y0 != y1 ) + art_rgb_svp_alpha_( strokeSvp, x0, y0, x1, y1, strokeColor, as, m_buffer + x0 * 4 + y0 * m_width * 4, m_width * 4, 0 ); + } + art_svp_free( strokeSvp ); + } + + if( fillSvp ) + { + if( m_fill && m_fill->type() == VFill::grad ) + applyGradient( fillSvp, true ); + else if( m_fill && m_fill->type() == VFill::patt ) + applyPattern( fillSvp, true ); + else + { + clampToViewport( *fillSvp, x0, y0, x1, y1 ); + if( x0 != x1 && y0 != y1 ) + art_rgb_svp_alpha_( fillSvp, x0, y0, x1, y1, fillColor, af, m_buffer + x0 * 4 + y0 * m_width * 4, m_width * 4, 0 ); + } + art_svp_free( fillSvp ); + } + + //delete m_stroke; + //m_stroke = 0L; + //delete m_fill; + //m_fill = 0L; + + art_free( vec ); +} + +void +VKoPainter::applyPattern( ArtSVP *svp, bool fill ) +{ + if(!svp) { + return; + } + + int x0, y0, x1, y1; + clampToViewport( *svp, x0, y0, x1, y1 ); + + ArtRender *render = 0L; + + VPattern pat = fill ? m_fill->pattern() : m_stroke->pattern(); + if( !pat.isValid() ) { + pat.load( KGlobal::iconLoader()->iconPath( "karbon.png", -KIcon::SizeMedium ) ); } + if( !pat.isValid() ) { + pat = *(dynamic_cast<VPattern *>(KarbonFactory::rServer()->patterns().getFirst() )) ;} + + ArtPattern *pattern = art_new( ArtPattern, 1 ); + + double dx = ( pat.vector().x() - pat.origin().x() ) * m_zoomFactor; + double dy = ( pat.vector().y() - pat.origin().y() ) * m_zoomFactor; + + pattern->twidth = pat.tileWidth(); + pattern->theight = pat.tileHeight(); + pattern->buffer = pat.pixels(); + pattern->opacity = fill ? short( m_fill->color().opacity() * 255.0 ) : short( m_stroke->color().opacity() * 255.0 ); + pattern->angle = atan2( -dy, dx ); + + if( x0 != x1 && y0 != y1 ) + { + render = art_render_new( x0, y0, x1, y1, m_buffer + 4 * int(x0) + m_width * 4 * int(y0), m_width * 4, 3, 8, ART_ALPHA_PREMUL, 0 ); + art_render_svp( render, svp ); + art_render_pattern( render, pattern, ART_FILTER_HYPER ); + } + + if( render ) + art_render_invoke( render ); + art_free( pattern ); +} + +void +VKoPainter::applyGradient( ArtSVP *svp, bool fill ) +{ + int x0, y0, x1, y1; + clampToViewport( *svp, x0, y0, x1, y1 ); + + ArtRender *render = 0L; + + VGradient gradient = fill ? m_fill->gradient() : m_stroke->gradient(); + float opa = fill ? m_fill->color().opacity() : m_stroke->color().opacity(); + + if( gradient.type() == VGradient::linear ) + { + ArtGradientLinear *linear = art_new( ArtGradientLinear, 1 ); + + // TODO : make variable + if( gradient.repeatMethod() == VGradient::none ) + linear->spread = ART_GRADIENT_PAD; + else if( gradient.repeatMethod() == VGradient::repeat ) + linear->spread = ART_GRADIENT_REPEAT; + else if( gradient.repeatMethod() == VGradient::reflect ) + linear->spread = ART_GRADIENT_REFLECT; + + double _x1 = gradient.origin().x(); + double _x2 = gradient.vector().x(); + double _y2 = gradient.origin().y(); + double _y1 = gradient.vector().y(); + + double dx = ( _x2 - _x1 ) * m_zoomFactor; + _y1 = m_matrix.m22() * _y1 + m_matrix.dy() / m_zoomFactor; + _y2 = m_matrix.m22() * _y2 + m_matrix.dy() / m_zoomFactor; + double dy = ( _y1 - _y2 ) * m_zoomFactor; + double scale = 1.0 / ( dx * dx + dy * dy ); + + linear->a = dx * scale; + linear->b = dy * scale; + linear->c = -( ( _x1 * m_zoomFactor + m_matrix.dx() ) * linear->a + + ( _y2 * m_zoomFactor ) * linear->b ); + + // get stop array + int offsets = -1; + linear->stops = buildStopArray( gradient, offsets ); + linear->n_stops = offsets; + + if( x0 != x1 && y0 != y1 && offsets >= 0 ) + { + render = art_render_new( x0, y0, x1, y1, m_buffer + 4 * int(x0) + m_width * 4 * int(y0), m_width * 4, 3, 8, ART_ALPHA_PREMUL, 0 ); + int opacity = int( opa * 255.0 ); + art_render_svp( render, svp ); + art_render_mask_solid (render, (opacity << 8) + opacity + (opacity >> 7)); + art_karbon_render_gradient_linear( render, linear, ART_FILTER_NEAREST ); + art_render_invoke( render ); + } + art_free( linear->stops ); + art_free( linear ); + } + else if( gradient.type() == VGradient::radial ) + { + ArtGradientRadial *radial = art_new( ArtGradientRadial, 1 ); + + // TODO : make variable + if( gradient.repeatMethod() == VGradient::none ) + radial->spread = ART_GRADIENT_PAD; + else if( gradient.repeatMethod() == VGradient::repeat ) + radial->spread = ART_GRADIENT_REPEAT; + else if( gradient.repeatMethod() == VGradient::reflect ) + radial->spread = ART_GRADIENT_REFLECT; + + radial->affine[0] = m_matrix.m11(); + radial->affine[1] = m_matrix.m12(); + radial->affine[2] = m_matrix.m21(); + radial->affine[3] = m_matrix.m22(); + radial->affine[4] = m_matrix.dx(); + radial->affine[5] = m_matrix.dy(); + + double cx = gradient.origin().x() * m_zoomFactor; + double cy = gradient.origin().y() * m_zoomFactor; + double fx = gradient.focalPoint().x() * m_zoomFactor; + double fy = gradient.focalPoint().y() * m_zoomFactor; + double r = sqrt( pow( gradient.vector().x() - gradient.origin().x(), 2 ) + + pow( gradient.vector().y() - gradient.origin().y(), 2 ) ); + r *= m_zoomFactor; + + radial->fx = (fx - cx) / r; + radial->fy = (fy - cy) / r; + + double aff1[6], aff2[6]; + art_affine_scale( aff1, r, r); + art_affine_translate( aff2, cx, cy ); + art_affine_multiply( aff1, aff1, aff2 ); + art_affine_multiply( aff1, aff1, radial->affine ); + art_affine_invert( radial->affine, aff1 ); + + // get stop array + int offsets = -1; + radial->stops = buildStopArray( gradient, offsets ); + radial->n_stops = offsets; + + if( x0 != x1 && y0 != y1 && offsets >= 0 ) + { + render = art_render_new( x0, y0, x1, y1, m_buffer + 4 * x0 + m_width * 4 * y0, m_width * 4, 3, 8, ART_ALPHA_PREMUL, 0 ); + int opacity = int( opa * 255.0 ); + art_render_svp( render, svp ); + art_render_mask_solid (render, (opacity << 8) + opacity + (opacity >> 7)); + art_karbon_render_gradient_radial( render, radial, ART_FILTER_NEAREST ); + art_render_invoke( render ); + } + art_free( radial->stops ); + art_free( radial ); + } + else if( gradient.type() == VGradient::conic ) + { + ArtGradientConical *conical = art_new( ArtGradientConical, 1 ); + + // TODO : make variable + if( gradient.repeatMethod() == VGradient::none ) + conical->spread = ART_GRADIENT_PAD; + else if( gradient.repeatMethod() == VGradient::repeat ) + conical->spread = ART_GRADIENT_REPEAT; + else if( gradient.repeatMethod() == VGradient::reflect ) + conical->spread = ART_GRADIENT_REFLECT; + + double cx = gradient.origin().x() * m_zoomFactor; + cx = m_matrix.m11() * cx + m_matrix.dx(); + double cy = gradient.origin().y() * m_zoomFactor; + cy = m_matrix.m22() * cy + m_matrix.dy(); + double r = sqrt( pow( gradient.vector().x() - gradient.origin().x(), 2 ) + + pow( gradient.vector().y() - gradient.origin().y(), 2 ) ); + r *= m_zoomFactor; + + conical->cx = cx; + conical->cy = cy; + conical->r = r; + + // get stop array + int offsets = -1; + conical->stops = buildStopArray( gradient, offsets ); + conical->n_stops = offsets; + + if( x0 != x1 && y0 != y1 && offsets >= 0 ) + { + render = art_render_new( x0, y0, x1, y1, m_buffer + 4 * x0 + m_width * 4 * y0, m_width * 4, 3, 8, ART_ALPHA_PREMUL, 0 ); + int opacity = int( opa * 255.0 ); + art_render_svp( render, svp ); + art_render_mask_solid (render, (opacity << 8) + opacity + (opacity >> 7)); + art_karbon_render_gradient_conical( render, conical, ART_FILTER_NEAREST ); + art_render_invoke( render ); + } + art_free( conical->stops ); + art_free( conical ); + } +} + +ArtGradientStop * +VKoPainter::buildStopArray( VGradient &gradient, int &offsets ) +{ + // TODO : make this generic + QPtrVector<VColorStop> colorStops = gradient.colorStops(); + offsets = colorStops.count(); + + ArtGradientStop *stopArray = art_new( ArtGradientStop, offsets * 2 - 1 ); + + for( int offset = 0 ; offset < offsets ; offset++ ) + { + double ramp = colorStops[ offset ]->rampPoint; + //double mid = colorStops[ offset ]->midPoint; + stopArray[ offset * 2 ].offset = ramp; + + QColor qStopColor = colorStops[ offset ]->color; + int r = qRed( qStopColor.rgb() ); + int g = qGreen( qStopColor.rgb() ); + int b = qBlue( qStopColor.rgb() ); + art_u32 rgba = (r << 24) | (g << 16) | (b << 8) | qAlpha(qStopColor.rgb()); + /* convert from separated to premultiplied alpha */ + int a = int( colorStops[ offset]->color.opacity() * 255.0 ); + r = (rgba >> 24) * a + 0x80; + r = (r + (r >> 8)) >> 8; + g = ((rgba >> 16) & 0xff) * a + 0x80; + g = (g + (g >> 8)) >> 8; + b = ((rgba >> 8) & 0xff) * a + 0x80; + b = (b + (b >> 8)) >> 8; + stopArray[ offset * 2 ].color[ 0 ] = ART_PIX_MAX_FROM_8(r); + stopArray[ offset * 2 ].color[ 1 ] = ART_PIX_MAX_FROM_8(g); + stopArray[ offset * 2 ].color[ 2 ] = ART_PIX_MAX_FROM_8(b); + stopArray[ offset * 2 ].color[ 3 ] = ART_PIX_MAX_FROM_8(a); + + if( offset + 1 != offsets ) + { + stopArray[ offset * 2 + 1 ].offset = ramp + ( colorStops[ offset + 1 ]->rampPoint - ramp ) * colorStops[ offset ]->midPoint; + + QColor qStopColor2 = colorStops[ offset + 1 ]->color; + rgba = int(r + ((qRed(qStopColor2.rgb()) - r)) * 0.5) << 24 | + int(g + ((qGreen(qStopColor2.rgb()) - g)) * 0.5) << 16 | + int(b + ((qBlue(qStopColor2.rgb()) - b)) * 0.5) << 8 | + qAlpha(qStopColor2.rgb()); + /* convert from separated to premultiplied alpha */ + int a = int( colorStops[ offset]->color.opacity() * 255.0 ); + r = (rgba >> 24) * a + 0x80; + r = (r + (r >> 8)) >> 8; + g = ((rgba >> 16) & 0xff) * a + 0x80; + g = (g + (g >> 8)) >> 8; + b = ((rgba >> 8) & 0xff) * a + 0x80; + b = (b + (b >> 8)) >> 8; + stopArray[ offset * 2 + 1 ].color[ 0 ] = ART_PIX_MAX_FROM_8(r); + stopArray[ offset * 2 + 1 ].color[ 1 ] = ART_PIX_MAX_FROM_8(g); + stopArray[ offset * 2 + 1 ].color[ 2 ] = ART_PIX_MAX_FROM_8(b); + stopArray[ offset * 2 + 1 ].color[ 3 ] = ART_PIX_MAX_FROM_8(a); + } + } + + offsets = offsets * 2 - 1; + return stopArray; +} + +void +VKoPainter::drawNode( const KoPoint& p, int width ) +{ + if( !m_bDrawNodes ) return; + + KoPoint _p( m_matrix.map( QPoint( int( p.x() * m_zoomFactor ), int( p.y() * m_zoomFactor ) ) ) ); + int x1 = int( _p.x() - width ); + int x2 = int( _p.x() + width ); + int y1 = int( _p.y() - width ); + int y2 = int( _p.y() + width ); + + clampToViewport( x1, y1, x2, y2 ); + + int baseindex = 4 * x1 + ( m_width * 4 * y1 ); + + QColor color = m_fill->color(); + for( int i = 0; i < y2 - y1; i++ ) + { + for( int j = 0; j < x2 - x1; j++ ) + { + m_buffer[ baseindex + 4 * j + ( m_width * 4 * i ) ] = color.red(); + m_buffer[ baseindex + 4 * j + ( m_width * 4 * i ) + 1 ] = color.green(); + m_buffer[ baseindex + 4 * j + ( m_width * 4 * i ) + 2 ] = color.blue(); + m_buffer[ baseindex + 4 * j + ( m_width * 4 * i ) + 3 ] = 0xFF; + } + } +} + +void +VKoPainter::drawImage( const QImage &image, const QWMatrix &affine ) +{ + // set up world matrix + double affineresult[6]; + + affineresult[0] = affine.m11() * m_matrix.m11() * m_zoomFactor + affine.m12() * m_matrix.m21(); + affineresult[1] = (affine.m11() * m_matrix.m12() + affine.m12() * m_matrix.m22() ) * m_zoomFactor; + affineresult[2] = (affine.m21() * m_matrix.m11() + affine.m22() * m_matrix.m21() ) * m_zoomFactor; + affineresult[3] = affine.m22() * m_matrix.m22() * m_zoomFactor + affine.m21() * m_matrix.m12(); + affineresult[4] = m_matrix.dx() + affine.dx() * m_zoomFactor; + affineresult[5] = m_matrix.dy() - affine.dy() * m_zoomFactor; + + //art_affine_scale( affineresult, m_zoomFactor, m_zoomFactor); + /*kdDebug(38000) << "affineresult[0] : " << affineresult[0] << endl; + kdDebug(38000) << "affineresult[1] : " << affineresult[1] << endl; + kdDebug(38000) << "affineresult[2] : " << affineresult[2] << endl; + kdDebug(38000) << "affineresult[3] : " << affineresult[3] << endl; + kdDebug(38000) << "affineresult[4] : " << affineresult[4] << endl; + kdDebug(38000) << "affineresult[5] : " << affineresult[5] << endl; + kdDebug(38000) << "m_matrix.dx() : " << m_matrix.dx() << endl; + kdDebug(38000) << "affine.dx() : " << affine.dx() << endl; + kdDebug(38000) << "image.height() : " << image.height() << endl;*/ + art_rgba_affine( m_buffer, 0, 0, m_width, m_height, m_width * 4, + image.bits(), image.width(), image.height(), image.width() * 4, + affineresult, ART_FILTER_NEAREST, 0L ); +} + +void +VKoPainter::drawRect( const KoRect &r ) +{ + newPath(); + moveTo( r.topLeft() ); + lineTo( r.topRight() ); + lineTo( r.bottomRight() ); + lineTo( r.bottomLeft() ); + lineTo( r.topLeft() ); + fillPath(); + strokePath(); +} + +void +VKoPainter::drawRect( double x, double y, double w, double h ) +{ + drawRect( KoRect( x, y, w, h ) ); +} + diff --git a/karbon/render/vkopainter.h b/karbon/render/vkopainter.h new file mode 100644 index 00000000..48336092 --- /dev/null +++ b/karbon/render/vkopainter.h @@ -0,0 +1,124 @@ +/* This file is part of the KDE project + Copyright (C) 2001, 2002, 2003 The Karbon Developers + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public License + along with this library; see the file COPYING.LIB. If not, write to + the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. +*/ + +#ifndef __VKOPAINTER_H__ +#define __VKOPAINTER_H__ + +// kopainter/libart wrapper + +#include "vpainter.h" +#include <qwmatrix.h> +#include <qptrlist.h> +#include <koffice_export.h> +class QPainter; +struct _ArtVpath; +struct _ArtBpath; +struct _ArtSVP; +struct _ArtGradientStop; +class VGradient; +class VPattern; +class KoRect; + +class KARBONBASE_EXPORT VKoPainter : public VPainter +{ +public: + VKoPainter( QPaintDevice *target, unsigned int w = 0, unsigned int h = 0, bool = true ); + VKoPainter( unsigned char *buffer, unsigned int w = 0, unsigned int h = 0, bool = true ); + virtual ~VKoPainter(); + + virtual void resize( unsigned int w, unsigned int h ); + virtual void begin(); + virtual void end(); + virtual void blit( const KoRect & ); + void clear(); + virtual void clear( const QColor & ); + virtual void clear( const KoRect &, const QColor & ); + + // matrix manipulation + virtual void setWorldMatrix( const QWMatrix & ); + virtual const QWMatrix worldMatrix() { return m_matrix; } + virtual void setZoomFactor( double ); + virtual double zoomFactor() { return m_zoomFactor; } + + // drawing + virtual void moveTo( const KoPoint & ); + virtual void lineTo( const KoPoint & ); + virtual void curveTo( const KoPoint &, const KoPoint &, const KoPoint & ); + virtual void newPath(); + virtual void fillPath(); + virtual void setFillRule( VFillRule ); + virtual void strokePath(); + virtual void setClipPath(); + virtual void resetClipPath(); + + // helper + virtual void drawNode( const KoPoint& p, int width ); + virtual void drawRect( const KoRect & ); + virtual void drawRect( double, double, double, double ); + + // pen + brush + virtual void setPen( const VStroke & ); + virtual void setPen( const QColor & ); + virtual void setPen( Qt::PenStyle style ); + virtual void setBrush( const VFill & ); + virtual void setBrush( const QColor & ); + virtual void setBrush( Qt::BrushStyle style ); + + virtual void drawImage( const QImage &, const QWMatrix & ); + + // stack management + virtual void save(); + virtual void restore(); + + // + virtual void setRasterOp( Qt::RasterOp ); + + virtual QPaintDevice *device() { return m_target; } + unsigned char *buffer() { return m_buffer; } + +private: + void drawVPath( struct _ArtVpath * ); + void applyGradient( _ArtSVP *, bool ); + void applyPattern( _ArtSVP *, bool ); + _ArtGradientStop *buildStopArray( VGradient &gradient, int & ); + void clampToViewport( const _ArtSVP &, int &, int &, int &, int & ); + void clampToViewport( int &, int &, int &, int & ); + void ensureSpace( unsigned int ); + +private: + struct _ArtBpath *m_path; + unsigned int m_index; + unsigned int m_alloccount; + unsigned char *m_buffer; + QPaintDevice *m_target; + unsigned int m_width; + unsigned int m_height; + QWMatrix m_matrix; + VStroke *m_stroke; + VFill *m_fill; + VFillRule m_fillRule; + double m_zoomFactor; + QPtrList<_ArtSVP> m_clipPaths; + + bool m_bDrawNodes; + + GC gc; +}; + +#endif diff --git a/karbon/render/vpainter.h b/karbon/render/vpainter.h new file mode 100644 index 00000000..b638ddcc --- /dev/null +++ b/karbon/render/vpainter.h @@ -0,0 +1,102 @@ +/* This file is part of the KDE project + Copyright (C) 2001, The Karbon Developers + Copyright (C) 2002, The Karbon Developers + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public License + along with this library; see the file COPYING.LIB. If not, write to + the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + +*/ + +#ifndef __VPAINTER_H__ +#define __VPAINTER_H__ + +// painter abstraction + +#include <qnamespace.h> +#include <KoRect.h> +#include <vfillrule.h> + +class QWMatrix; +class QPaintDevice; +class QColor; +class QPen; +class QBrush; +class QImage; + +class VStroke; +class VFill; + +class KoPoint; +class KoRect; + +class VPainter +{ +public: + VPainter( QPaintDevice *, unsigned int /*w*/ = 0, unsigned int /*h*/ = 0 ) {}; + virtual ~VPainter() {}; + + // + virtual void resize( unsigned int w, unsigned int h ) = 0; + virtual void begin() = 0; + virtual void end() = 0; + virtual void blit( const KoRect & ) = 0; + virtual void clear( const QColor & ) = 0; + virtual void clear( const KoRect &, const QColor & ) = 0; + + // matrix manipulation + virtual void setWorldMatrix( const QWMatrix & ) = 0; + virtual const QWMatrix worldMatrix() = 0; + virtual void setZoomFactor( double ) = 0; + virtual double zoomFactor() { return 1.0; } + + // drawing + virtual void moveTo( const KoPoint & ) = 0; + virtual void lineTo( const KoPoint & ) = 0; + virtual void curveTo( const KoPoint &, const KoPoint &, const KoPoint & ) = 0; + virtual void newPath() = 0; + virtual void strokePath() = 0; + virtual void fillPath() = 0; + virtual void setFillRule( VFillRule ) = 0; + virtual void setClipPath() = 0; + virtual void resetClipPath() = 0; + + // helper + virtual void drawNode( const KoPoint& , int ) {} + virtual void drawRect( const KoRect & ) {} + virtual void drawRect( double, double, double, double ) {} + + // pen + brush + virtual void setPen( const VStroke & ) = 0; + // compatibility, use VPen/VBrush later ? + virtual void setPen( const QColor & ) = 0; + virtual void setPen( Qt::PenStyle style ) = 0; + virtual void setBrush( const VFill & ) = 0; + virtual void setBrush( const QColor & ) = 0; + virtual void setBrush( Qt::BrushStyle style ) = 0; + + virtual void drawImage( const QImage &, const QWMatrix & ) {} + + // stack management + virtual void save() = 0; + virtual void restore() = 0; + + // we have to see how this fits in + virtual void setRasterOp( Qt::RasterOp ) = 0; + + // access to device + virtual QPaintDevice *device() = 0; +}; + +#endif diff --git a/karbon/render/vpainterfactory.cc b/karbon/render/vpainterfactory.cc new file mode 100644 index 00000000..a4d52c62 --- /dev/null +++ b/karbon/render/vpainterfactory.cc @@ -0,0 +1,74 @@ +/* This file is part of the KDE project + Copyright (C) 2001, The Karbon Developers + Copyright (C) 2002, The Karbon Developers + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public License + along with this library; see the file COPYING.LIB. If not, write to + the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. +*/ + +// painter factory + +#include "vpainterfactory.h" +#include "vkopainter.h" +#include "vqpainter.h" + +VPainterFactory::VPainterFactory() +{ + m_painter = 0L; + m_editpainter = 0L; +} + +VPainterFactory::~VPainterFactory() +{ + delete m_painter; + delete m_editpainter; +} + +VPainter * +VPainterFactory::painter() +{ + return m_painter; +} + +void +VPainterFactory::setPainter( QPaintDevice *target, int w, int h ) +{ + if( m_painter ) + delete m_painter; + m_painter = new VKoPainter( target, w, h ); +} + +VPainter * +VPainterFactory::editpainter() +{ + return m_editpainter; +} + +void +VPainterFactory::setEditPainter( QPaintDevice *target, int w, int h ) +{ + if( m_editpainter ) + delete m_editpainter; + m_editpainter = new VQPainter( target, w, h ); +} + +void +VPainterFactory::setWireframePainter( QPaintDevice *target, int w, int h ) +{ + if( m_painter ) + delete m_painter; + m_painter = new VQPainter( target, w, h ); +} + diff --git a/karbon/render/vpainterfactory.h b/karbon/render/vpainterfactory.h new file mode 100644 index 00000000..df36819d --- /dev/null +++ b/karbon/render/vpainterfactory.h @@ -0,0 +1,48 @@ +/* This file is part of the KDE project + Copyright (C) 2001, The Karbon Developers + Copyright (C) 2002, The Karbon Developers + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public License + along with this library; see the file COPYING.LIB. If not, write to + the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. +*/ + +#ifndef __VPAINTERDACTORY_H__ +#define __VPAINTERDACTORY_H__ + +// painter factory +#include <koffice_export.h> +class VPainter; +class QPaintDevice; + +class KARBONBASE_EXPORT VPainterFactory +{ +public: + VPainterFactory(); + ~VPainterFactory(); + + VPainter *painter(); + void setPainter( QPaintDevice *target, int w = 0, int h = 0 ); + + VPainter *editpainter(); + void setEditPainter( QPaintDevice *target, int w = 0, int h = 0 ); + + void setWireframePainter( QPaintDevice *target, int w = 0, int h = 0 ); + +private: + VPainter *m_painter; + VPainter *m_editpainter; +}; + +#endif diff --git a/karbon/render/vqpainter.cc b/karbon/render/vqpainter.cc new file mode 100644 index 00000000..31e5593e --- /dev/null +++ b/karbon/render/vqpainter.cc @@ -0,0 +1,284 @@ +/* This file is part of the KDE project + Copyright (C) 2001, The Karbon Developers + Copyright (C) 2002, The Karbon Developers + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public License + along with this library; see the file COPYING.LIB. If not, write to + the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. +*/ + +// qpainter wrapper + +#include "vqpainter.h" +#include "vstroke.h" +#include "vcolor.h" +#include "vfill.h" + +#include <qpainter.h> +#include <qpaintdevice.h> +#include <qpen.h> + +#include <KoPoint.h> +#include <kdebug.h> + +VQPainter::VQPainter( QPaintDevice *target, unsigned int w, unsigned int h ) : VPainter( target, w, h ), m_painter( 0L ), m_target( target ), m_width( w ), m_height( h ) +{ + m_zoomFactor = 1; + m_index = 0; + m_painter = new QPainter( target ); +} + +VQPainter::~VQPainter() +{ + delete m_painter; +} + +void +VQPainter::resize( unsigned int w, unsigned int h ) +{ + m_width = w; + m_height = h; +} + +void +VQPainter::blit( const KoRect & ) +{ + end(); +} + +void +VQPainter::clear( const QColor &c ) +{ + m_painter->setBackgroundColor( c ); + m_painter->eraseRect( 0, 0, m_width, m_height ); +} + +void +VQPainter::begin() +{ + if( !m_painter->isActive() ) + { + m_painter->begin( m_target ); + m_painter->eraseRect( 0, 0, m_width, m_height ); + } +} + +void +VQPainter::end() +{ + m_painter->end(); +} + +const QWMatrix +VQPainter::worldMatrix() +{ + return m_painter->worldMatrix(); +} + +void +VQPainter::setWorldMatrix( const QWMatrix& mat ) +{ + m_painter->setWorldMatrix( mat ); +} + +void +VQPainter::setZoomFactor( double zoomFactor ) +{ + m_zoomFactor = zoomFactor; + /*QWMatrix mat; + mat.scale( zoomFactor, zoomFactor ); + m_painter->setWorldMatrix( mat );*/ +} + +void +VQPainter::moveTo( const KoPoint &p ) +{ + //m_index = 0; + if( m_pa.size() <= m_index ) + m_pa.resize( m_index + 10 ); + + m_pa.setPoint( m_index, static_cast<int>(p.x() * m_zoomFactor), static_cast<int>(p.y() * m_zoomFactor) ); + + m_index++; +} + +void +VQPainter::lineTo( const KoPoint &p ) +{ + if( m_pa.size() <= m_index ) + m_pa.resize( m_index + 10 ); + + m_pa.setPoint( m_index, static_cast<int>(p.x() * m_zoomFactor), static_cast<int>(p.y() * m_zoomFactor) ); + + m_index++; +} + +void +VQPainter::curveTo( const KoPoint &p1, const KoPoint &p2, const KoPoint &p3 ) +{ + // calculate cubic bezier using a temp QPointArray + QPointArray pa( 4 ); + pa.setPoint( 0, m_pa.point( m_index - 1 ).x(), m_pa.point( m_index - 1 ).y() ); + pa.setPoint( 1, static_cast<int>(p1.x() * m_zoomFactor), static_cast<int>(p1.y() * m_zoomFactor) ); + pa.setPoint( 2, static_cast<int>(p2.x() * m_zoomFactor), static_cast<int>(p2.y() * m_zoomFactor) ); + pa.setPoint( 3, static_cast<int>(p3.x() * m_zoomFactor), static_cast<int>(p3.y() * m_zoomFactor) ); + + QPointArray pa2( pa.cubicBezier() ); + + m_pa.resize( m_index + pa2.size() ); + m_pa.putPoints( m_index, pa2.size(), pa2 ); + + m_index += pa2.size(); +} + +void +VQPainter::newPath() +{ + m_index = 0; +} + +void +VQPainter::fillPath() +{ + // we probably dont need filling for qpainter + //m_index = 0; + m_painter->drawPolygon( m_pa, FALSE, 0, m_index ); +} + +void +VQPainter::strokePath() +{ + m_painter->drawPolyline( m_pa, 0, m_index ); + m_index = 0; +} + +void +VQPainter::setPen( const VStroke &stroke ) +{ + QPen pen; + + // color + linewidth + pen.setColor( stroke.color() ); + pen.setWidth( static_cast<int>(stroke.lineWidth()) ); + + // caps + if( stroke.lineCap() == VStroke::capButt ) + pen.setCapStyle( Qt::FlatCap ); + else if( stroke.lineCap() == VStroke::capRound ) + pen.setCapStyle( Qt::RoundCap ); + else if( stroke.lineCap() == VStroke::capSquare ) + pen.setCapStyle( Qt::SquareCap ); + + m_painter->setPen( pen ); +} + +void +VQPainter::setBrush( const VFill &fill ) +{ + switch( fill.type() ) + { + case VFill::none: + m_painter->setBrush( Qt::NoBrush ); + break; + case VFill::solid: + m_painter->setBrush( QBrush( fill.color(), Qt::SolidPattern ) ); + break; + case VFill::grad: + // gradients are nor supported by qpainter + m_painter->setBrush( Qt::NoBrush ); + break; + case VFill::patt: + // pixmap brushes not supported for printing + m_painter->setBrush( QBrush( fill.color(), fill.pattern().pixmap() ) ); + break; + default: + break; + } +} + +void +VQPainter::setPen( const QColor &c ) +{ + m_painter->setPen( c ); +} + +void +VQPainter::setPen( Qt::PenStyle style ) +{ + m_painter->setPen( style ); +} + +void +VQPainter::setBrush( const QColor &c ) +{ + m_painter->setBrush( c ); +} + +void +VQPainter::setBrush( Qt::BrushStyle style ) +{ + m_painter->setBrush( style ); +} + +void +VQPainter::save() +{ + m_painter->save(); +} + +void +VQPainter::restore() +{ + m_painter->restore(); +} + +void +VQPainter::setRasterOp( Qt::RasterOp r ) +{ + m_painter->setRasterOp( r ); +} + +void +VQPainter::drawNode( const KoPoint &p, int width ) +{ + m_painter->drawRect( QRect( int( p.x() * m_zoomFactor ) - width, int( p.y() * m_zoomFactor ) - width, + 2 * width + 1, 2 * width + 1 ) ); +} + +void +VQPainter::drawRect( const KoRect &rect ) +{ + m_painter->drawRect( QRect( int( rect.x() ), int( rect.y() ), int( rect.width() ), int( rect.height() ) ) ); +} + +void +VQPainter::drawImage( const QImage &image, const QWMatrix &affine ) +{ + QWMatrix matrix = m_painter->worldMatrix(); + + double m11 = affine.m11() * matrix.m11() * m_zoomFactor + affine.m12() * matrix.m21(); + double m12 = (affine.m11() * matrix.m12() + affine.m12() * matrix.m22() ) * m_zoomFactor; + double m21 = (affine.m21() * matrix.m11() + affine.m22() * matrix.m21() ) * m_zoomFactor; + double m22 = affine.m22() * matrix.m22() * m_zoomFactor + affine.m21() * matrix.m12(); + double dx = matrix.dx() + affine.dx() * m_zoomFactor; + double dy = matrix.dy() - affine.dy() * m_zoomFactor; + + QWMatrix world( m11, m12, m21, m22, dx, dy ); + + m_painter->setWorldMatrix( world ); + + m_painter->drawImage( QPoint( 0, 0 ), image ); + // restore old world matrix + m_painter->setWorldMatrix( matrix ); +} diff --git a/karbon/render/vqpainter.h b/karbon/render/vqpainter.h new file mode 100644 index 00000000..7f4f501b --- /dev/null +++ b/karbon/render/vqpainter.h @@ -0,0 +1,95 @@ +/* This file is part of the KDE project + Copyright (C) 2001, The Karbon Developers + Copyright (C) 2002, The Karbon Developers + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public License + along with this library; see the file COPYING.LIB. If not, write to + the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. +*/ + +#ifndef __VQPAINTER_H__ +#define __VQPAINTER_H__ + +// qpainter wrapper + +#include "vpainter.h" +#include "qpointarray.h" + +class QPainter; + +class VQPainter : public VPainter +{ +public: + VQPainter( QPaintDevice *target, unsigned int w = 0, unsigned int h = 0 ); + virtual ~VQPainter(); + + // + virtual void resize( unsigned int w, unsigned int h ); + virtual void begin(); + virtual void end(); + virtual void blit( const KoRect & ); + virtual void clear( const QColor & ); + virtual void clear( const KoRect &, const QColor & ) {} + + // matrix manipulation + virtual void setWorldMatrix( const QWMatrix & ); + virtual const QWMatrix worldMatrix(); + virtual void setZoomFactor( double ); + virtual double zoomFactor() { return m_zoomFactor; } + + // drawing + virtual void moveTo( const KoPoint & ); + virtual void lineTo( const KoPoint & ); + virtual void curveTo( const KoPoint &, const KoPoint &, const KoPoint & ); + virtual void newPath(); + virtual void strokePath(); + virtual void fillPath(); + virtual void setFillRule( VFillRule ) {} + virtual void setClipPath() {} + virtual void resetClipPath() {} + + // pen + brush + virtual void setPen( const VStroke & ); + virtual void setPen( const QColor & ); + virtual void setPen( Qt::PenStyle style ); + virtual void setBrush( const VFill & ); + virtual void setBrush( const QColor & ); + virtual void setBrush( Qt::BrushStyle style ); + + virtual void drawImage( const QImage &, const QWMatrix & ); + + // stack management + virtual void save(); + virtual void restore(); + + // helper + virtual void drawNode( const KoPoint& , int ); + virtual void drawRect( const KoRect & ); + + // + virtual void setRasterOp( Qt::RasterOp ); + + virtual QPaintDevice *device() { return m_target; } + +private: + double m_zoomFactor; + unsigned int m_index; + QPointArray m_pa; + QPainter *m_painter; + QPaintDevice *m_target; + unsigned int m_width; + unsigned int m_height; +}; + +#endif diff --git a/karbon/render/xrgbrender/Makefile.am b/karbon/render/xrgbrender/Makefile.am new file mode 100644 index 00000000..dcfe376a --- /dev/null +++ b/karbon/render/xrgbrender/Makefile.am @@ -0,0 +1,5 @@ +INCLUDES = $(all_includes) + +noinst_LTLIBRARIES = libkarbonxrgbrender.la + +libkarbonxrgbrender_la_SOURCES = gdk-pixbuf-xlib.c gdk-pixbuf-xlib-render.c gdk-pixbuf-xlib-drawable.c gdk-pixbuf-xlibrgb.c diff --git a/karbon/render/xrgbrender/gdk-pixbuf-xlib-drawable.c b/karbon/render/xrgbrender/gdk-pixbuf-xlib-drawable.c new file mode 100644 index 00000000..7e955610 --- /dev/null +++ b/karbon/render/xrgbrender/gdk-pixbuf-xlib-drawable.c @@ -0,0 +1,1137 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ +/* GdkPixbuf library - convert X drawable information to RGB + * + * Copyright (C) 1999 Michael Zucchi + * + * Authors: Michael Zucchi <zucchi@zedzone.mmc.com.au> + * Cody Russell <bratsche@dfw.net> + * Federico Mena-Quintero <federico@gimp.org> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + */ + +/* Ported to Xlib by John Harper <john@dcs.warwick.ac.uk> */ + + +#include <config.h> +#include <stdio.h> +#include <string.h> +#include "gdk-pixbuf-xlib-private.h" +#include <X11/Xlib.h> +#include <X11/Xutil.h> + +#if (KSVG_BYTE_ORDER == KSVG_LITTLE_ENDIAN) +#define LITTLE +#endif +#define d(x) + + + +static unsigned int mask_table[] = { + 0x00000000, 0x00000001, 0x00000003, 0x00000007, + 0x0000000f, 0x0000001f, 0x0000003f, 0x0000007f, + 0x000000ff, 0x000001ff, 0x000003ff, 0x000007ff, + 0x00000fff, 0x00001fff, 0x00003fff, 0x00007fff, + 0x0000ffff, 0x0001ffff, 0x0003ffff, 0x0007ffff, + 0x000fffff, 0x001fffff, 0x003fffff, 0x007fffff, + 0x00ffffff, 0x01ffffff, 0x03ffffff, 0x07ffffff, + 0x0fffffff, 0x1fffffff, 0x3fffffff, 0x7fffffff, + 0xffffffff +}; + + +/* color handling */ + +typedef struct xlib_colormap_struct xlib_colormap; +struct xlib_colormap_struct { + int size; + XColor *colors; + Visual *visual; + Colormap colormap; +}; + + +/* from gdkvisual.c */ +static void +visual_decompose_mask (unsigned long mask, + int *shift, + int *prec) +{ + *shift = 0; + *prec = 0; + + while (!(mask & 0x1)) { + (*shift)++; + mask >>= 1; + } + + while (mask & 0x1) { + (*prec)++; + mask >>= 1; + } +} + +static int x_error; + +static int +handle_x_error (Display *dpy, XErrorEvent *ev) +{ + x_error = 1; + return 0; +} + +static int +drawable_is_pixmap (Drawable d) +{ + /* copied from Imlib */ + + XErrorHandler errh; + XWindowAttributes wa; + int is_pixmap; + + errh = XSetErrorHandler (handle_x_error); + x_error = 0; + XGetWindowAttributes (gdk_pixbuf_dpy, d, &wa); + XSync (gdk_pixbuf_dpy, False); + is_pixmap = x_error; + XSetErrorHandler (errh); + + return is_pixmap; +} + + + +/* + convert 1 bits-pixel data + no alpha +*/ +static void +rgb1 (XImage *image, unsigned char *pixels, int rowstride, xlib_colormap *colormap) +{ + int xx, yy; + int width, height; + int bpl; + unsigned char *s; + register unsigned char data; + unsigned char *o; + unsigned char *srow = image->data, *orow = pixels; + + d (printf ("1 bits/pixel\n")); + + /* convert upto 8 pixels/time */ + /* its probably not worth trying to make this run very fast, who uses + 1 bit displays anymore? */ + width = image->width; + height = image->height; + bpl = image->bytes_per_line; + + for (yy = 0; yy < height; yy++) { + s = srow; + o = orow; + + for (xx = 0; xx < width; xx ++) { + data = srow[xx >> 3] >> (7 - (xx & 7)) & 1; + *o++ = colormap->colors[data].red; + *o++ = colormap->colors[data].green; + *o++ = colormap->colors[data].blue; + } + srow += bpl; + orow += rowstride; + } +} + +/* + convert 1 bits/pixel data + with alpha +*/ +static void +rgb1a (XImage *image, unsigned char *pixels, int rowstride, xlib_colormap *colormap) +{ + int xx, yy; + int width, height; + int bpl; + unsigned char *s; + register unsigned char data; + unsigned char *o; + unsigned char *srow = image->data, *orow = pixels; + unsigned int remap[2]; + + d (printf ("1 bits/pixel\n")); + + /* convert upto 8 pixels/time */ + /* its probably not worth trying to make this run very fast, who uses + 1 bit displays anymore? */ + width = image->width; + height = image->height; + bpl = image->bytes_per_line; + + for (xx = 0; xx < 2; xx++) { +#ifdef LITTLE + remap[xx] = 0xff000000 + | colormap->colors[xx].blue << 16 + | colormap->colors[xx].green << 8 + | colormap->colors[xx].red; +#else + remap[xx] = 0xff + | colormap->colors[xx].red << 24 + | colormap->colors[xx].green << 16 + | colormap->colors[xx].blue << 8; +#endif + } + + for (yy = 0; yy < height; yy++) { + s = srow; + o = orow; + + for (xx = 0; xx < width; xx ++) { + data = srow[xx >> 3] >> (7 - (xx & 7)) & 1; + *o++ = remap[data]; + } + srow += bpl; + orow += rowstride; + } +} + +/* + convert 8 bits/pixel data + no alpha +*/ +static void +rgb8 (XImage *image, unsigned char *pixels, int rowstride, xlib_colormap *colormap) +{ + int xx, yy; + int width, height; + int bpl; + unsigned int mask; + register unsigned int data; + unsigned char *srow = image->data, *orow = pixels; + register unsigned char *s; + register unsigned char *o; + + width = image->width; + height = image->height; + bpl = image->bytes_per_line; + + d (printf ("8 bit, no alpha output\n")); + + mask = mask_table[image->depth]; + + for (yy = 0; yy < height; yy++) { + s = srow; + o = orow; + for (xx = 0; xx < width; xx++) { + data = *s++ & mask; + *o++ = colormap->colors[data].red; + *o++ = colormap->colors[data].green; + *o++ = colormap->colors[data].blue; + } + srow += bpl; + orow += rowstride; + } +} + +/* + convert 8 bits/pixel data + with alpha +*/ +static void +rgb8a (XImage *image, unsigned char *pixels, int rowstride, xlib_colormap *colormap) +{ + int xx, yy; + int width, height; + int bpl; + unsigned int mask; + register unsigned int data; + unsigned int remap[256]; + register unsigned char *s; /* read 2 pixels at once */ + register unsigned int *o; + unsigned char *srow = image->data, *orow = pixels; + + width = image->width; + height = image->height; + bpl = image->bytes_per_line; + + d (printf ("8 bit, with alpha output\n")); + + mask = mask_table[image->depth]; + + for (xx = 0; xx < colormap->size; xx++) { +#ifdef LITTLE + remap[xx] = 0xff000000 + | colormap->colors[xx].blue << 16 + | colormap->colors[xx].green << 8 + | colormap->colors[xx].red; +#else + remap[xx] = 0xff + | colormap->colors[xx].red << 24 + | colormap->colors[xx].green << 16 + | colormap->colors[xx].blue << 8; +#endif + } + + for (yy = 0; yy < height; yy++) { + s = srow; + o = (unsigned int *) orow; + for (xx = 0; xx < width; xx ++) { + data = *s++ & mask; + *o++ = remap[data]; + } + srow += bpl; + orow += rowstride; + } +} + +/* + convert 16 bits/pixel data + no alpha + data in lsb format +*/ +static void +rgb565lsb (XImage *image, unsigned char *pixels, int rowstride, xlib_colormap *colormap) +{ + int xx, yy; + int width, height; + int bpl; + +#ifdef LITTLE + register unsigned int *s; /* read 2 pixels at once */ +#else + register unsigned char *s; /* read 2 pixels at once */ +#endif + register unsigned short *o; + unsigned char *srow = image->data, *orow = pixels; + + width = image->width; + height = image->height; + bpl = image->bytes_per_line; + + for (yy = 0; yy < height; yy++) { +#ifdef LITTLE + s = (unsigned int *) srow; +#else + s = srow; +#endif + o = (unsigned short *) orow; + for (xx = 1; xx < width; xx += 2) { + register unsigned int data; +#ifdef LITTLE + data = *s++; + *o++ = (data & 0xf800) >> 8 | (data & 0xe000) >> 13 + | (data & 0x7e0) << 5 | (data & 0x600) >> 1; + *o++ = (data & 0x1f) << 3 | (data & 0x1c) >> 2 + | (data & 0xf8000000) >> 16 | (data & 0xe0000000) >> 21; + *o++ = (data & 0x7e00000) >> 19 | (data & 0x6000000) >> 25 + | (data & 0x1f0000) >> 5 | (data & 0x1c0000) >> 10; +#else + /* swap endianness first */ + data = s[0] | s[1] << 8 | s[2] << 16 | s[3] << 24; + s += 4; + *o++ = (data & 0xf800) | (data & 0xe000) >> 5 + | (data & 0x7e0) >> 3 | (data & 0x600) >> 9; + *o++ = (data & 0x1f) << 11 | (data & 0x1c) << 6 + | (data & 0xf8000000) >> 24 | (data & 0xe0000000) >> 29; + *o++ = (data & 0x7e00000) >> 11 | (data & 0x6000000) >> 17 + | (data & 0x1f0000) >> 13 | (data & 0x1c0000) >> 18; +#endif + } + /* check for last remaining pixel */ + if (width & 1) { + register unsigned short data; +#ifdef LITTLE + data = *((short *) s); +#else + data = *((short *) s); + data = ((data >> 8) & 0xff) | ((data & 0xff) << 8); +#endif + ((char *) o)[0] = ((data >> 8) & 0xf8) | ((data >> 13) & 0x7); + ((char *) o)[1] = ((data >> 3) & 0xfc) | ((data >> 9) & 0x3); + ((char *) o)[2] = ((data << 3) & 0xf8) | ((data >> 2) & 0x7); + } + srow += bpl; + orow += rowstride; + } +} + +/* + convert 16 bits/pixel data + no alpha + data in msb format +*/ +static void +rgb565msb (XImage *image, unsigned char *pixels, int rowstride, xlib_colormap *colormap) +{ + int xx, yy; + int width, height; + int bpl; + +#ifdef LITTLE + register unsigned char *s; /* need to swap data order */ +#else + register unsigned int *s; /* read 2 pixels at once */ +#endif + register unsigned short *o; + unsigned char *srow = image->data, *orow = pixels; + + width = image->width; + height = image->height; + bpl = image->bytes_per_line; + + for (yy = 0; yy < height; yy++) { +#ifdef LITTLE + s = srow; +#else + s = (unsigned int *) srow; +#endif + o = (unsigned short *) orow; + for (xx = 1; xx < width; xx += 2) { + register unsigned int data; +#ifdef LITTLE + /* swap endianness first */ + data = s[0] | s[1] << 8 | s[2] << 16 | s[3] << 24; + s += 4; + *o++ = (data & 0xf800) >> 8 | (data & 0xe000) >> 13 + | (data & 0x7e0) << 5 | (data & 0x600) >> 1; + *o++ = (data & 0x1f) << 3 | (data & 0x1c) >> 2 + | (data & 0xf8000000) >> 16 | (data & 0xe0000000) >> 21; + *o++ = (data & 0x7e00000) >> 19 | (data & 0x6000000) >> 25 + | (data & 0x1f0000) >> 5 | (data & 0x1c0000) >> 10; +#else + data = *s++; + *o++ = (data & 0xf800) | (data & 0xe000) >> 5 + | (data & 0x7e0) >> 3 | (data & 0x600) >> 9; + *o++ = (data & 0x1f) << 11 | (data & 0x1c) << 6 + | (data & 0xf8000000) >> 24 | (data & 0xe0000000) >> 29; + *o++ = (data & 0x7e00000) >> 11 | (data & 0x6000000) >> 17 + | (data & 0x1f0000) >> 13 | (data & 0x1c0000) >> 18; +#endif + } + /* check for last remaining pixel */ + if (width & 1) { + register unsigned short data; +#ifdef LITTLE + data = *((short *) s); + data = ((data >> 8) & 0xff) | ((data & 0xff) << 8); +#else + data = *((short *) s); +#endif + ((char *) o)[0] = ((data >> 8) & 0xf8) | ((data >> 13) & 0x7); + ((char *) o)[1] = ((data >> 3) & 0xfc) | ((data >> 9) & 0x3); + ((char *) o)[2] = ((data << 3) & 0xf8) | ((data >> 2) & 0x7); + } + srow += bpl; + orow += rowstride; + } +} + +/* + convert 16 bits/pixel data + with alpha + data in lsb format +*/ +static void +rgb565alsb (XImage *image, unsigned char *pixels, int rowstride, xlib_colormap *colormap) +{ + int xx, yy; + int width, height; + int bpl; + +#ifdef LITTLE + register unsigned short *s; /* read 1 pixels at once */ +#else + register unsigned char *s; +#endif + register unsigned int *o; + + unsigned char *srow = image->data, *orow = pixels; + + width = image->width; + height = image->height; + bpl = image->bytes_per_line; + + for (yy = 0; yy < height; yy++) { +#ifdef LITTLE + s = (unsigned short *) srow; +#else + s = (unsigned char *) srow; +#endif + o = (unsigned int *) orow; + for (xx = 0; xx < width; xx ++) { + register unsigned int data; + /* rrrrrggg gggbbbbb -> rrrrrRRR ggggggGG bbbbbBBB aaaaaaaa */ + /* little endian: aaaaaaaa bbbbbBBB ggggggGG rrrrrRRR */ +#ifdef LITTLE + data = *s++; + *o++ = (data & 0xf800) >> 8 | (data & 0xe000) >> 13 + | (data & 0x7e0) << 5 | (data & 0x600) >> 1 + | (data & 0x1f) << 19 | (data & 0x1c) << 14 + | 0xff000000; +#else + /* swap endianness first */ + data = s[0] | s[1] << 8; + s += 2; + *o++ = (data & 0xf800) << 16 | (data & 0xe000) << 11 + | (data & 0x7e0) << 13 | (data & 0x600) << 7 + | (data & 0x1f) << 11 | (data & 0x1c) << 6 + | 0xff; +#endif + } + srow += bpl; + orow += rowstride; + } +} + +/* + convert 16 bits/pixel data + with alpha + data in msb format +*/ +static void +rgb565amsb (XImage *image, unsigned char *pixels, int rowstride, xlib_colormap *colormap) +{ + int xx, yy; + int width, height; + int bpl; + +#ifdef LITTLE + register unsigned char *s; +#else + register unsigned short *s; /* read 1 pixels at once */ +#endif + register unsigned int *o; + + unsigned char *srow = image->data, *orow = pixels; + + width = image->width; + height = image->height; + bpl = image->bytes_per_line; + + for (yy = 0; yy < height; yy++) { + s = srow; + o = (unsigned int *) orow; + for (xx = 0; xx < width; xx ++) { + register unsigned int data; + /* rrrrrggg gggbbbbb -> rrrrrRRR gggggg00 bbbbbBBB aaaaaaaa */ + /* little endian: aaaaaaaa bbbbbBBB gggggg00 rrrrrRRR */ +#ifdef LITTLE + /* swap endianness first */ + data = s[0] | s[1] << 8; + s += 2; + *o++ = (data & 0xf800) >> 8 | (data & 0xe000) >> 13 + | (data & 0x7e0) << 5 | (data & 0x600) >> 1 + | (data & 0x1f) << 19 | (data & 0x1c) << 14 + | 0xff000000; +#else + data = *s++; + *o++ = (data & 0xf800) << 16 | (data & 0xe000) << 11 + | (data & 0x7e0) << 13 | (data & 0x600) << 7 + | (data & 0x1f) << 11 | (data & 0x1c) << 6 + | 0xff; +#endif + } + srow += bpl; + orow += rowstride; + } +} + +/* + convert 15 bits/pixel data + no alpha + data in lsb format +*/ +static void +rgb555lsb (XImage *image, unsigned char *pixels, int rowstride, xlib_colormap *colormap) +{ + int xx, yy; + int width, height; + int bpl; + +#ifdef LITTLE + register unsigned int *s; /* read 2 pixels at once */ +#else + register unsigned char *s; /* read 2 pixels at once */ +#endif + register unsigned short *o; + unsigned char *srow = image->data, *orow = pixels; + + width = image->width; + height = image->height; + bpl = image->bytes_per_line; + + for (yy = 0; yy < height; yy++) { +#ifdef LITTLE + s = (unsigned int *) srow; +#else + s = srow; +#endif + o = (unsigned short *) orow; + for (xx = 1; xx < width; xx += 2) { + register unsigned int data; +#ifdef LITTLE + data = *s++; + *o++ = (data & 0x7c00) >> 7 | (data & 0x7000) >> 12 + | (data & 0x3e0) << 6 | (data & 0x380) << 1; + *o++ = (data & 0x1f) << 3 | (data & 0x1c) >> 2 + | (data & 0x7c000000) >> 15 | (data & 0x70000000) >> 20; + *o++ = (data & 0x3e00000) >> 18 | (data & 0x3800000) >> 23 + | (data & 0x1f0000) >> 5 | (data & 0x1c0000) >> 10; +#else + /* swap endianness first */ + data = s[0] | s[1] << 8 | s[2] << 16 | s[3] << 24; + s += 4; + *o++ = (data & 0x7c00) << 1 | (data & 0x7000) >> 4 + | (data & 0x3e0) >> 2 | (data & 0x380) >> 7; + *o++ = (data & 0x1f) << 11 | (data & 0x1c) << 6 + | (data & 0x7c000000) >> 23 | (data & 0x70000000) >> 28; + *o++ = (data & 0x3e00000) >> 10 | (data & 0x3800000) >> 15 + | (data & 0x1f0000) >> 13 | (data & 0x1c0000) >> 18; +#endif + } + /* check for last remaining pixel */ + if (width & 1) { + register unsigned short data; +#ifdef LITTLE + data = *((short *) s); +#else + data = *((short *) s); + data = ((data >> 8) & 0xff) | ((data & 0xff) << 8); +#endif + ((char *) o)[0] = (data & 0x7c00) >> 7 | (data & 0x7000) >> 12; + ((char *) o)[1] = (data & 0x3e0) >> 2 | (data & 0x380) >> 7; + ((char *) o)[2] = (data & 0x1f) << 3 | (data & 0x1c) >> 2; + } + srow += bpl; + orow += rowstride; + } +} + +/* + convert 15 bits/pixel data + no alpha + data in msb format +*/ +static void +rgb555msb (XImage *image, unsigned char *pixels, int rowstride, xlib_colormap *colormap) +{ + int xx, yy; + int width, height; + int bpl; + +#ifdef LITTLE + register unsigned char *s; /* read 2 pixels at once */ +#else + register unsigned int *s; /* read 2 pixels at once */ +#endif + register unsigned short *o; + unsigned char *srow = image->data, *orow = pixels; + + width = image->width; + height = image->height; + bpl = image->bytes_per_line; + + for (yy = 0; yy < height; yy++) { + s = srow; + o = (unsigned short *) orow; + for (xx = 1; xx < width; xx += 2) { + register unsigned int data; +#ifdef LITTLE + /* swap endianness first */ + data = s[0] | s[1] << 8 | s[2] << 16 | s[3] << 24; + s += 4; + *o++ = (data & 0x7c00) >> 7 | (data & 0x7000) >> 12 + | (data & 0x3e0) << 6 | (data & 0x380) << 1; + *o++ = (data & 0x1f) << 3 | (data & 0x1c) >> 2 + | (data & 0x7c000000) >> 15 | (data & 0x70000000) >> 20; + *o++ = (data & 0x3e00000) >> 18 | (data & 0x3800000) >> 23 + | (data & 0x1f0000) >> 5 | (data & 0x1c0000) >> 10; +#else + data = *s++; + *o++ = (data & 0x7c00) << 1 | (data & 0x7000) >> 4 + | (data & 0x3e0) >> 2 | (data & 0x380) >> 7; + *o++ = (data & 0x1f) << 11 | (data & 0x1c) << 6 + | (data & 0x7c000000) >> 23 | (data & 0x70000000) >> 28; + *o++ = (data & 0x3e00000) >> 10 | (data & 0x3800000) >> 15 + | (data & 0x1f0000) >> 13 | (data & 0x1c0000) >> 18; +#endif + } + /* check for last remaining pixel */ + if (width & 1) { + register unsigned short data; +#ifdef LITTLE + data = *((short *) s); + data = ((data >> 8) & 0xff) | ((data & 0xff) << 8); +#else + data = *((short *) s); +#endif + ((char *) o)[0] = (data & 0x7c00) >> 7 | (data & 0x7000) >> 12; + ((char *) o)[1] = (data & 0x3e0) >> 2 | (data & 0x380) >> 7; + ((char *) o)[2] = (data & 0x1f) << 3 | (data & 0x1c) >> 2; + } + srow += bpl; + orow += rowstride; + } +} + +/* + convert 15 bits/pixel data + with alpha + data in lsb format +*/ +static void +rgb555alsb (XImage *image, unsigned char *pixels, int rowstride, xlib_colormap *colormap) +{ + int xx, yy; + int width, height; + int bpl; + +#ifdef LITTLE + register unsigned short *s; /* read 1 pixels at once */ +#else + register unsigned char *s; +#endif + register unsigned int *o; + + unsigned char *srow = image->data, *orow = pixels; + + width = image->width; + height = image->height; + bpl = image->bytes_per_line; + + for (yy = 0; yy < height; yy++) { +#ifdef LITTLE + s = (unsigned short *) srow; +#else + s = srow; +#endif + o = (unsigned int *) orow; + for (xx = 0; xx < width; xx++) { + register unsigned int data; + /* rrrrrggg gggbbbbb -> rrrrrRRR gggggGGG bbbbbBBB aaaaaaaa */ + /* little endian: aaaaaaaa bbbbbBBB gggggGGG rrrrrRRR */ +#ifdef LITTLE + data = *s++; + *o++ = (data & 0x7c00) >> 7 | (data & 0x7000) >> 12 + | (data & 0x3e0) << 6 | (data & 0x380) << 1 + | (data & 0x1f) << 19 | (data & 0x1c) << 14 + | 0xff000000; +#else + /* swap endianness first */ + data = s[0] | s[1] << 8; + s += 2; + *o++ = (data & 0x7c00) << 17 | (data & 0x7000) << 12 + | (data & 0x3e0) << 14 | (data & 0x380) << 9 + | (data & 0x1f) << 11 | (data & 0x1c) << 6 + | 0xff; +#endif + } + srow += bpl; + orow += rowstride; + } +} + +/* + convert 15 bits/pixel data + with alpha + data in msb format +*/ +static void +rgb555amsb (XImage *image, unsigned char *pixels, int rowstride, xlib_colormap *colormap) +{ + int xx, yy; + int width, height; + int bpl; + +#ifdef LITTLE + register unsigned short *s; /* read 1 pixels at once */ +#else + register unsigned char *s; +#endif + register unsigned int *o; + + unsigned char *srow = image->data, *orow = pixels; + + width = image->width; + height = image->height; + bpl = image->bytes_per_line; + + for (yy = 0; yy < height; yy++) { +#ifdef LITTLE + s = (unsigned short *) srow; +#else + s = srow; +#endif + o = (unsigned int *) orow; + for (xx = 0; xx < width; xx++) { + register unsigned int data; + /* rrrrrggg gggbbbbb -> rrrrrRRR gggggGGG bbbbbBBB aaaaaaaa */ + /* little endian: aaaaaaaa bbbbbBBB gggggGGG rrrrrRRR */ +#ifdef LITTLE + /* swap endianness first */ + data = s[0] | s[1] << 8; + s += 2; + *o++ = (data & 0x7c00) >> 7 | (data & 0x7000) >> 12 + | (data & 0x3e0) << 6 | (data & 0x380) << 1 + | (data & 0x1f) << 19 | (data & 0x1c) << 14 + | 0xff000000; +#else + data = *s++; + *o++ = (data & 0x7c00) << 17 | (data & 0x7000) << 12 + | (data & 0x3e0) << 14 | (data & 0x380) << 9 + | (data & 0x1f) << 11 | (data & 0x1c) << 6 + | 0xff; +#endif + } + srow += bpl; + orow += rowstride; + } +} + + +static void +rgb888alsb (XImage *image, unsigned char *pixels, int rowstride, xlib_colormap *colormap) +{ + int xx, yy; + int width, height; + int bpl; + + unsigned char *s; /* for byte order swapping */ + unsigned char *o; + unsigned char *srow = image->data, *orow = pixels; + + width = image->width; + height = image->height; + bpl = image->bytes_per_line; + + d (printf ("32 bits/pixel with alpha\n")); + + /* lsb data */ + for (yy = 0; yy < height; yy++) { + s = srow; + o = orow; + for (xx = 0; xx < width; xx++) { + *o++ = s[2]; + *o++ = s[1]; + *o++ = s[0]; + *o++ = 0xff; + s += 4; + } + srow += bpl; + orow += rowstride; + } +} + +static void +rgb888lsb (XImage *image, unsigned char *pixels, int rowstride, xlib_colormap *colormap) +{ + int xx, yy; + int width, height; + int bpl; + + unsigned char *srow = image->data, *orow = pixels; + unsigned char *o, *s; + + width = image->width; + height = image->height; + bpl = image->bytes_per_line; + + d (printf ("32 bit, lsb, no alpha\n")); + + for (yy = 0; yy < height; yy++) { + s = srow; + o = orow; + for (xx = 0; xx < width; xx++) { + *o++ = s[2]; + *o++ = s[1]; + *o++ = s[0]; + s += 4; + } + srow += bpl; + orow += rowstride; + } +} + +static void +rgb888amsb (XImage *image, unsigned char *pixels, int rowstride, xlib_colormap *colormap) +{ + int xx, yy; + int width, height; + int bpl; + + unsigned char *srow = image->data, *orow = pixels; +#ifdef LITTLE + unsigned int *o; + unsigned int *s; +#else + unsigned char *s; /* for byte order swapping */ + unsigned char *o; +#endif + + d (printf ("32 bit, msb, with alpha\n")); + + width = image->width; + height = image->height; + bpl = image->bytes_per_line; + + /* msb data */ + for (yy = 0; yy < height; yy++) { +#ifdef LITTLE + s = (unsigned int *) srow; + o = (unsigned int *) orow; +#else + s = srow; + o = orow; +#endif + for (xx = 0; xx < width; xx++) { +#ifdef LITTLE + *o++ = s[1]; + *o++ = s[2]; + *o++ = s[3]; + *o++ = 0xff; + s += 4; +#else + *o++ = (*s << 8) | 0xff; /* untested */ + s++; +#endif + } + srow += bpl; + orow += rowstride; + } +} + +static void +rgb888msb (XImage *image, unsigned char *pixels, int rowstride, xlib_colormap *colormap) +{ + int xx, yy; + int width, height; + int bpl; + + unsigned char *srow = image->data, *orow = pixels; + unsigned char *s; + unsigned char *o; + + d (printf ("32 bit, msb, no alpha\n")); + + width = image->width; + height = image->height; + bpl = image->bytes_per_line; + + for (yy = 0; yy < height; yy++) { + s = srow; + o = orow; + for (xx = 0; xx < width; xx++) { + *o++ = s[1]; + *o++ = s[2]; + *o++ = s[3]; + s += 4; + } + srow += bpl; + orow += rowstride; + } +} + +/* + This should work correctly with any display/any endianness, but will probably + run quite slow +*/ +static void +convert_real_slow (XImage *image, unsigned char *pixels, int rowstride, xlib_colormap *cmap, int alpha) +{ + int xx, yy; + int width, height; + int bpl; + unsigned char *srow = image->data, *orow = pixels; + unsigned char *s; + unsigned char *o; + unsigned int pixel; + Visual *v; + unsigned char component; + int i; + int red_shift, red_prec, green_shift, green_prec, blue_shift, blue_prec; + + width = image->width; + height = image->height; + bpl = image->bytes_per_line; + v = cmap->visual; + + visual_decompose_mask (v->red_mask, &red_shift, &red_prec); + visual_decompose_mask (v->green_mask, &green_shift, &green_prec); + visual_decompose_mask (v->blue_mask, &blue_shift, &blue_prec); + + d(printf("rgb mask/shift/prec = %x:%x:%x %d:%d:%d %d:%d:%d\n", + v->red_mask, v->green_mask, v->blue_mask, + red_shift, green_shift, blue_shift, + red_prec, green_prec, blue_prec)); + + for (yy = 0; yy < height; yy++) { + s = srow; + o = orow; + for (xx = 0; xx < width; xx++) { + pixel = XGetPixel (image, xx, yy); + switch (v->class) { + /* I assume this is right for static & greyscale's too? */ + case StaticGray: + case GrayScale: + case StaticColor: + case PseudoColor: + *o++ = cmap->colors[pixel].red; + *o++ = cmap->colors[pixel].green; + *o++ = cmap->colors[pixel].blue; + break; + case TrueColor: + /* This is odd because it must sometimes shift left (otherwise + I'd just shift >> (*_shift - 8 + *_prec + <0-7>). This logic + should work for all bit sizes/shifts/etc. */ + component = 0; + for (i = 24; i < 32; i += red_prec) + component |= ((pixel & v->red_mask) << (32 - red_shift - red_prec)) >> i; + *o++ = component; + component = 0; + for (i = 24; i < 32; i += green_prec) + component |= ((pixel & v->green_mask) << (32 - green_shift - green_prec)) >> i; + *o++ = component; + component = 0; + for (i = 24; i < 32; i += blue_prec) + component |= ((pixel & v->blue_mask) << (32 - blue_shift - blue_prec)) >> i; + *o++ = component; + break; + case DirectColor: + *o++ = cmap->colors[((pixel & v->red_mask) << (32 - red_shift - red_prec)) >> 24].red; + *o++ = cmap->colors[((pixel & v->green_mask) << (32 - green_shift - green_prec)) >> 24].green; + *o++ = cmap->colors[((pixel & v->blue_mask) << (32 - blue_shift - blue_prec)) >> 24].blue; + break; + } + if (alpha) + *o++ = 0xff; + } + srow += bpl; + orow += rowstride; + } +} + +typedef void (* cfunc) (XImage *image, unsigned char *pixels, int rowstride, xlib_colormap *cmap); + +static cfunc convert_map[] = { + rgb1,rgb1,rgb1a,rgb1a, + rgb8,rgb8,rgb8a,rgb8a, + rgb555lsb,rgb555msb,rgb555alsb,rgb555amsb, + rgb565lsb,rgb565msb,rgb565alsb,rgb565amsb, + rgb888lsb,rgb888msb,rgb888alsb,rgb888amsb +}; + +/* + perform actual conversion + + If we can, try and use the optimised code versions, but as a default + fallback, and always for direct colour, use the generic/slow but complete + conversion function. +*/ +static void +rgbconvert (XImage *image, unsigned char *pixels, int rowstride, int alpha, xlib_colormap *cmap) +{ + int index = (image->byte_order == MSBFirst) | (alpha != 0) << 1; + int bank=5; /* default fallback converter */ + Visual *v = cmap->visual; + + d(printf("masks = %x:%x:%x\n", v->red_mask, v->green_mask, v->blue_mask)); + d(printf("image depth = %d, bpp = %d\n", image->depth, image->bits_per_pixel)); + + switch (v->class) { + /* I assume this is right for static & greyscale's too? */ + case StaticGray: + case GrayScale: + case StaticColor: + case PseudoColor: + switch (image->bits_per_pixel) { + case 1: + bank = 0; + break; + case 8: + bank = 1; + break; + } + break; + case TrueColor: + switch (image->depth) { + case 15: + if (v->red_mask == 0x7c00 && v->green_mask == 0x3e0 && v->blue_mask == 0x1f + && image->bits_per_pixel == 16) + bank = 2; + break; + case 16: + if (v->red_mask == 0xf800 && v->green_mask == 0x7e0 && v->blue_mask == 0x1f + && image->bits_per_pixel == 16) + bank = 3; + break; + case 24: + case 32: + if (v->red_mask == 0xff0000 && v->green_mask == 0xff00 && v->blue_mask == 0xff + && image->bits_per_pixel == 32) + bank = 4; + break; + } + break; + case DirectColor: + /* always use the slow version */ + break; + } + + d(printf("converting using conversion function in bank %d\n", bank)); + + if (bank==5) { + convert_real_slow(image, pixels, rowstride, cmap, alpha); + } else { + index |= bank << 2; + (* convert_map[index]) (image, pixels, rowstride, cmap); + } +} + +static int +xlib_window_is_viewable (Window w) +{ + XWindowAttributes wa; + + while (w != 0) { + Window parent, root, *children; + int nchildren; + + XGetWindowAttributes (gdk_pixbuf_dpy, w, &wa); + if (wa.map_state != IsViewable) + return 0; + + if (!XQueryTree (gdk_pixbuf_dpy, w, &root, + &parent, &children, &nchildren)) + return 0; + + if (nchildren > 0) + XFree (children); + + if (parent == root) + return 1; + + w = parent; + } + + return 0; +} + +static int +xlib_window_get_origin (Window w, int *x, int *y) +{ + Window child; + return XTranslateCoordinates (gdk_pixbuf_dpy, w, + RootWindow (gdk_pixbuf_dpy, + gdk_pixbuf_screen), + 0, 0, x, y, &child); +} diff --git a/karbon/render/xrgbrender/gdk-pixbuf-xlib-private.h b/karbon/render/xrgbrender/gdk-pixbuf-xlib-private.h new file mode 100644 index 00000000..0198ec00 --- /dev/null +++ b/karbon/render/xrgbrender/gdk-pixbuf-xlib-private.h @@ -0,0 +1,39 @@ +/* GdkPixbuf library - Xlib header file + * + * Authors: John Harper <john@dcs.warwick.ac.uk> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + */ + +#ifndef GDK_PIXBUF_XLIB_PRIVATE_H +#define GDK_PIXBUF_XLIB_PRIVATE_H + +#include <config.h> +#include "gdk-pixbuf-xlib.h" +#include <X11/Xlib.h> + +extern Display *gdk_pixbuf_dpy; +extern int gdk_pixbuf_screen; + +#define KSVG_LITTLE_ENDIAN 1 +#define KSVG_BIG_ENDIAN 2 + +#if X_BYTE_ORDER == X_BIG_ENDIAN +#define KSVG_BYTE_ORDER KSVG_BIG_ENDIAN +#else +#define KSVG_BYTE_ORDER KSVG_LITTLE_ENDIAN +#endif +#endif diff --git a/karbon/render/xrgbrender/gdk-pixbuf-xlib-render.c b/karbon/render/xrgbrender/gdk-pixbuf-xlib-render.c new file mode 100644 index 00000000..f2439138 --- /dev/null +++ b/karbon/render/xrgbrender/gdk-pixbuf-xlib-render.c @@ -0,0 +1,380 @@ +/* GdkPixbuf library - Rendering functions + * + * Copyright (C) 1999 The Free Software Foundation + * + * Author: Federico Mena-Quintero <federico@gimp.org> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + */ + +/* Trivially ported to Xlib(RGB) by John Harper. */ + +#include <config.h> +/* #include "gdk-pixbuf-private.h" */ +#include "gdk-pixbuf-xlib-private.h" + + +/* +** + * gdk_pixbuf_xlib_render_threshold_alpha: + * @pixbuf: A pixbuf. + * @bitmap: Bitmap where the bilevel mask will be painted to. + * @src_x: Source X coordinate. + * @src_y: source Y coordinate. + * @dest_x: Destination X coordinate. + * @dest_y: Destination Y coordinate. + * @width: Width of region to threshold. + * @height: Height of region to threshold. + * @alpha_threshold: Opacity values below this will be painted as zero; all + * other values will be painted as one. + * + * Takes the opacity values in a rectangular portion of a pixbuf and thresholds + * them to produce a bi-level alpha mask that can be used as a clipping mask for + * a drawable. + * +void +gdk_pixbuf_xlib_render_threshold_alpha (GdkPixbuf *pixbuf, Pixmap bitmap, + int src_x, int src_y, + int dest_x, int dest_y, + int width, int height, + int alpha_threshold) +{ + GC gc; + XColor color; + int x, y; + guchar *p; + int start, start_status; + int status; + XGCValues gcv; + + g_return_if_fail (pixbuf != NULL); + g_return_if_fail (pixbuf->colorspace == GDK_COLORSPACE_RGB); + g_return_if_fail (pixbuf->n_channels == 3 || pixbuf->n_channels == 4); + g_return_if_fail (pixbuf->bits_per_sample == 8); + + g_return_if_fail (bitmap != 0); + g_return_if_fail (width >= 0 && height >= 0); + g_return_if_fail (src_x >= 0 && src_x + width <= pixbuf->width); + g_return_if_fail (src_y >= 0 && src_y + height <= pixbuf->height); + + g_return_if_fail (alpha_threshold >= 0 && alpha_threshold <= 255); + + if (width == 0 || height == 0) + return; + + gc = XCreateGC (gdk_pixbuf_dpy, bitmap, 0, &gcv); + + if (!pixbuf->has_alpha) { + color.pixel = (alpha_threshold == 255) ? 0 : 1; + XSetForeground (gdk_pixbuf_dpy, gc, color.pixel); + XFillRectangle (gdk_pixbuf_dpy, bitmap, gc, + dest_x, dest_y, width, height); + XFreeGC (gdk_pixbuf_dpy, gc); + return; + } + + color.pixel = 0; + XSetForeground (gdk_pixbuf_dpy, gc, color.pixel); + XFillRectangle (gdk_pixbuf_dpy, bitmap, gc, + dest_x, dest_y, width, height); + + color.pixel = 1; + XSetForeground (gdk_pixbuf_dpy, gc, color.pixel); + + for (y = 0; y < height; y++) { + p = (pixbuf->pixels + (y + src_y) * pixbuf->rowstride + src_x * pixbuf->n_channels + + pixbuf->n_channels - 1); + + start = 0; + start_status = *p < alpha_threshold; + + for (x = 0; x < width; x++) { + status = *p < alpha_threshold; + + if (status != start_status) { + if (!start_status) + XDrawLine (gdk_pixbuf_dpy, bitmap, gc, + start + dest_x, y + dest_y, + x - 1 + dest_x, y + dest_y); + + start = x; + start_status = status; + } + + p += pixbuf->n_channels; + } + + if (!start_status) + XDrawLine (gdk_pixbuf_dpy, bitmap, gc, + start + dest_x, y + dest_y, + x - 1 + dest_x, y + dest_y); + } + + XFreeGC (gdk_pixbuf_dpy, gc); +} + + +static guchar * +remove_alpha (GdkPixbuf *pixbuf, int x, int y, int width, int height, int *rowstride) +{ + guchar *buf; + int xx, yy; + guchar *src, *dest; + + g_assert (pixbuf->n_channels == 4); + g_assert (pixbuf->has_alpha); + g_assert (width > 0 && height > 0); + g_assert (x >= 0 && x + width <= pixbuf->width); + g_assert (y >= 0 && y + height <= pixbuf->height); + + *rowstride = 4 * ((width * 3 + 3) / 4); + + buf = g_new (guchar, *rowstride * height); + + for (yy = 0; yy < height; yy++) { + src = pixbuf->pixels + pixbuf->rowstride * (yy + y) + x * pixbuf->n_channels; + dest = buf + *rowstride * yy; + + for (xx = 0; xx < width; xx++) { + *dest++ = *src++; + *dest++ = *src++; + *dest++ = *src++; + src++; + } + } + + return buf; +} + + * gdk_pixbuf_xlib_render_to_drawable: + * @pixbuf: A pixbuf. + * @drawable: Destination drawable. + * @gc: GC used for rendering. + * @src_x: Source X coordinate within pixbuf. + * @src_y: Source Y coordinate within pixbuf. + * @dest_x: Destination X coordinate within drawable. + * @dest_y: Destination Y coordinate within drawable. + * @width: Width of region to render, in pixels. + * @height: Height of region to render, in pixels. + * @dither: Dithering mode for XlibRGB. + * @x_dither: X offset for dither. + * @y_dither: Y offset for dither. + * + * Renders a rectangular portion of a pixbuf to a drawable while using the + * specified GC. This is done using XlibRGB, so the specified drawable must + * have the XlibRGB visual and colormap. Note that this function will ignore + * the opacity information for images with an alpha channel; the GC must already + * have the clipping mask set if you want transparent regions to show through. + * + * For an explanation of dither offsets, see the XlibRGB documentation. In + * brief, the dither offset is important when re-rendering partial regions of an + * image to a rendered version of the full image, or for when the offsets to a + * base position change, as in scrolling. The dither matrix has to be shifted + * for consistent visual results. If you do not have any of these cases, the + * dither offsets can be both zero. +void +gdk_pixbuf_xlib_render_to_drawable (GdkPixbuf *pixbuf, + Drawable drawable, GC gc, + int src_x, int src_y, + int dest_x, int dest_y, + int width, int height, + XlibRgbDither dither, + int x_dither, int y_dither) +{ + guchar *buf; + int rowstride; + + g_return_if_fail (pixbuf != NULL); + g_return_if_fail (pixbuf->colorspace == GDK_COLORSPACE_RGB); + g_return_if_fail (pixbuf->n_channels == 3 || pixbuf->n_channels == 4); + g_return_if_fail (pixbuf->bits_per_sample == 8); + + g_return_if_fail (drawable != 0); + g_return_if_fail (gc != 0); + + g_return_if_fail (width >= 0 && height >= 0); + g_return_if_fail (src_x >= 0 && src_x + width <= pixbuf->width); + g_return_if_fail (src_y >= 0 && src_y + height <= pixbuf->height); + + if (width == 0 || height == 0) + return; + + if (pixbuf->has_alpha) + buf = remove_alpha (pixbuf, src_x, src_y, width, height, &rowstride); + else { + buf = pixbuf->pixels + src_y * pixbuf->rowstride + src_x * 3; + rowstride = pixbuf->rowstride; + } + + xlib_draw_rgb_image_dithalign (drawable, gc, + dest_x, dest_y, + width, height, + dither, + buf, rowstride, + x_dither, y_dither); + + if (pixbuf->has_alpha) + g_free (buf); +} + + + + * gdk_pixbuf_xlib_render_to_drawable_alpha: + * @pixbuf: A pixbuf. + * @drawable: Destination drawable. + * @src_x: Source X coordinate within pixbuf. + * @src_y: Source Y coordinates within pixbuf. + * @dest_x: Destination X coordinate within drawable. + * @dest_y: Destination Y coordinate within drawable. + * @width: Width of region to render, in pixels. + * @height: Height of region to render, in pixels. + * @alpha_mode: If the image does not have opacity information, this is ignored. + * Otherwise, specifies how to handle transparency when rendering. + * @alpha_threshold: If the image does have opacity information and @alpha_mode + * is GDK_PIXBUF_ALPHA_BILEVEL, specifies the threshold value for opacity + * values. + * @dither: Dithering mode for XlibRGB. + * @x_dither: X offset for dither. + * @y_dither: Y offset for dither. + * + * Renders a rectangular portion of a pixbuf to a drawable. This is done using + * XlibRGB, so the specified drawable must have the XlibRGB visual and colormap. + * + * When used with #GDK_PIXBUF_ALPHA_BILEVEL, this function has to create a bitmap + * out of the thresholded alpha channel of the image and, it has to set this + * bitmap as the clipping mask for the GC used for drawing. This can be a + * significant performance penalty depending on the size and the complexity of + * the alpha channel of the image. If performance is crucial, consider handling + * the alpha channel yourself (possibly by caching it in your application) and + * using gdk_pixbuf_xlib_render_to_drawable() or GdkRGB directly instead. +void +gdk_pixbuf_xlib_render_to_drawable_alpha (GdkPixbuf *pixbuf, Drawable drawable, + int src_x, int src_y, + int dest_x, int dest_y, + int width, int height, + GdkPixbufAlphaMode alpha_mode, + int alpha_threshold, + XlibRgbDither dither, + int x_dither, int y_dither) +{ + Pixmap bitmap = 0; + GC gc; + XGCValues gcv; + + g_return_if_fail (pixbuf != NULL); + g_return_if_fail (pixbuf->colorspace == GDK_COLORSPACE_RGB); + g_return_if_fail (pixbuf->n_channels == 3 || pixbuf->n_channels == 4); + g_return_if_fail (pixbuf->bits_per_sample == 8); + + g_return_if_fail (drawable != 0); + g_return_if_fail (width >= 0 && height >= 0); + g_return_if_fail (src_x >= 0 && src_x + width <= pixbuf->width); + g_return_if_fail (src_y >= 0 && src_y + height <= pixbuf->height); + + if (width == 0 || height == 0) + return; + + gc = XCreateGC (gdk_pixbuf_dpy, drawable, 0, &gcv); + + if (pixbuf->has_alpha) { + + bitmap = XCreatePixmap (gdk_pixbuf_dpy, + RootWindow (gdk_pixbuf_dpy, + gdk_pixbuf_screen), + width, height, 1); + gdk_pixbuf_xlib_render_threshold_alpha (pixbuf, bitmap, + src_x, src_y, + 0, 0, + width, height, + alpha_threshold); + + XSetClipMask (gdk_pixbuf_dpy, gc, bitmap); + XSetClipOrigin (gdk_pixbuf_dpy, gc, dest_x, dest_y); + } + + gdk_pixbuf_xlib_render_to_drawable (pixbuf, drawable, gc, + src_x, src_y, + dest_x, dest_y, + width, height, + dither, + x_dither, y_dither); + + if (bitmap) + XFreePixmap (gdk_pixbuf_dpy, bitmap); + + XFreeGC (gdk_pixbuf_dpy, gc); +} + + * @pixbuf: A pixbuf. + * @pixmap_return: Return value for the created pixmap. + * @mask_return: Return value for the created mask. + * @alpha_threshold: Threshold value for opacity values. + * + * Creates a pixmap and a mask bitmap which are returned in the @pixmap_return + * and @mask_return arguments, respectively, and renders a pixbuf and its + * corresponding tresholded alpha mask to them. This is merely a convenience + * function; applications that need to render pixbufs with dither offsets or to + * given drawables should use gdk_pixbuf_xlib_render_to_drawable_alpha() or + * gdk_pixbuf_xlib_render_to_drawable(), and + * gdk_pixbuf_xlib_render_threshold_alpha(). + * + * If the pixbuf does not have an alpha channel, then *@mask_return will be set + * to None. +void +gdk_pixbuf_xlib_render_pixmap_and_mask (GdkPixbuf *pixbuf, + Pixmap *pixmap_return, + Pixmap *mask_return, + int alpha_threshold) +{ + g_return_if_fail (pixbuf != NULL); + + if (pixmap_return) { + GC gc; + XGCValues gcv; + + *pixmap_return = XCreatePixmap (gdk_pixbuf_dpy, + RootWindow (gdk_pixbuf_dpy, + gdk_pixbuf_screen), + pixbuf->width, + pixbuf->height, + xlib_rgb_get_depth ()); + gc = XCreateGC (gdk_pixbuf_dpy, *pixmap_return, 0, &gcv); + gdk_pixbuf_xlib_render_to_drawable (pixbuf, *pixmap_return, gc, + 0, 0, 0, 0, + pixbuf->width, + pixbuf->height, + XLIB_RGB_DITHER_NORMAL, + 0, 0); + XFreeGC (gdk_pixbuf_dpy, gc); + } + + if (mask_return) { + if (pixbuf->has_alpha) { + *mask_return = XCreatePixmap (gdk_pixbuf_dpy, + RootWindow (gdk_pixbuf_dpy, + gdk_pixbuf_screen), + pixbuf->width, + pixbuf->height, 1); + gdk_pixbuf_xlib_render_threshold_alpha (pixbuf, + *mask_return, + 0, 0, 0, 0, + pixbuf->width, + pixbuf->height, + alpha_threshold); + } else + *mask_return = 0; + } +}*/ diff --git a/karbon/render/xrgbrender/gdk-pixbuf-xlib.c b/karbon/render/xrgbrender/gdk-pixbuf-xlib.c new file mode 100644 index 00000000..ff41ccdf --- /dev/null +++ b/karbon/render/xrgbrender/gdk-pixbuf-xlib.c @@ -0,0 +1,63 @@ +/* GdkPixbuf library - Initialization functions + * + * Author: John Harper <john@dcs.warwick.ac.uk> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + */ + +#include <config.h> +#include <X11/Xlib.h> +/*#include <gdk-pixbuf/gdk-pixbuf-private.h>*/ +#include "gdk-pixbuf-xlib-private.h" + +Display *gdk_pixbuf_dpy = NULL; +int gdk_pixbuf_screen = -1; + +/** + * gdk_pixbuf_xlib_init: + * @display: X display to use. + * @screen_num: Screen number. + * + * Initializes the gdk-pixbuf Xlib machinery by calling xlib_rgb_init(). This + * function should be called near the beginning of your program, or before using + * any of the gdk-pixbuf-xlib functions. + **/ +void +gdk_pixbuf_xlib_init (Display *display, int screen_num) +{ + xlib_rgb_init (display, ScreenOfDisplay (display, screen_num)); + gdk_pixbuf_dpy = display; + gdk_pixbuf_screen = screen_num; +} + +/** + * gdk_pixbuf_xlib_init_with_depth: + * @display: X display to use. + * @screen_num: Screen number. + * @prefDepth: Preferred depth for XlibRGB. + * + * Similar to gdk_pixbuf_xlib_init(), but also lets you specify the preferred + * depth for XlibRGB if you do not want it to use the default depth it picks. + **/ +void +gdk_pixbuf_xlib_init_with_depth (Display *display, + int screen_num, int prefDepth) +{ + xlib_rgb_init_with_depth (display, ScreenOfDisplay (display, screen_num), + prefDepth); + gdk_pixbuf_dpy = display; + gdk_pixbuf_screen = screen_num; +} diff --git a/karbon/render/xrgbrender/gdk-pixbuf-xlib.h b/karbon/render/xrgbrender/gdk-pixbuf-xlib.h new file mode 100644 index 00000000..2b31ed7e --- /dev/null +++ b/karbon/render/xrgbrender/gdk-pixbuf-xlib.h @@ -0,0 +1,80 @@ +/* GdkPixbuf library - Xlib header file + * + * Authors: John Harper <john@dcs.warwick.ac.uk> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + */ + +#ifndef GDK_PIXBUF_XLIB_H +#define GDK_PIXBUF_XLIB_H + +/* #include <gdk-pixbuf/gdk-pixbuf.h> */ +/* #include <gdk-pixbuf-xlib/gdk-pixbuf-xlibrgb.h> */ +#include <X11/Xlib.h> + + + +/* init */ + +void gdk_pixbuf_xlib_init (Display *display, int screen_num); + +void gdk_pixbuf_xlib_init_with_depth (Display *display, int screen_num, + int prefDepth); + + + +/* render */ +/* +void gdk_pixbuf_xlib_render_threshold_alpha (GdkPixbuf *pixbuf, Pixmap bitmap, + int src_x, int src_y, + int dest_x, int dest_y, + int width, int height, + int alpha_threshold); + +void gdk_pixbuf_xlib_render_to_drawable (GdkPixbuf *pixbuf, + Drawable drawable, GC gc, + int src_x, int src_y, + int dest_x, int dest_y, + int width, int height, + XlibRgbDither dither, + int x_dither, int y_dither); + + +void gdk_pixbuf_xlib_render_to_drawable_alpha (GdkPixbuf *pixbuf, + Drawable drawable, + int src_x, int src_y, + int dest_x, int dest_y, + int width, int height, + GdkPixbufAlphaMode alpha_mode, + int alpha_threshold, + XlibRgbDither dither, + int x_dither, int y_dither); + +void gdk_pixbuf_xlib_render_pixmap_and_mask (GdkPixbuf *pixbuf, + Pixmap *pixmap_return, + Pixmap *mask_return, + int alpha_threshold); + + + +GdkPixbuf *gdk_pixbuf_xlib_get_from_drawable (GdkPixbuf *dest, + Drawable src, + Colormap cmap, Visual *visual, + int src_x, int src_y, + int dest_x, int dest_y, + int width, int height); +*/ +#endif /* GDK_PIXBUF_XLIB_H */ diff --git a/karbon/render/xrgbrender/gdk-pixbuf-xlibrgb.c b/karbon/render/xrgbrender/gdk-pixbuf-xlibrgb.c new file mode 100644 index 00000000..171db33d --- /dev/null +++ b/karbon/render/xrgbrender/gdk-pixbuf-xlibrgb.c @@ -0,0 +1,3724 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- + * + * The contents of this file are subject to the Mozilla Public License + * Version 1.1 (the "MPL"); you may not use this file except in + * compliance with the MPL. You may obtain a copy of the MPL at + * http://www.mozilla.org/MPL/ + * + * Software distributed under the MPL is distributed on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the MPL + * for the specific language governing rights and limitations under the + * MPL. + * + * Alternatively, the contents of this file may be used under the + * terms of the GNU Library General Public License (the "LGPL"), in + * which case the provisions of the LGPL are applicable instead of + * those above. If you wish to allow use of your version of this file + * only under the terms of the LGPL and not to allow others to use + * your version of this file under the MPL, indicate your decision by + * deleting the provisions above and replace them with the notice and + * other provisions required by the LGPL. If you do not delete the + * provisions above, a recipient may use your version of this file + * under either the MPL or the LGPL. + */ + +/* + * This code is derived from GdkRgb. + * For more information on GdkRgb, see http://www.levien.com/gdkrgb/ + * Raph Levien <raph@acm.org> + */ + +/* Ported by Christopher Blizzard to Xlib. With permission from the + * original authors and the copyright holders of this file, the + * contents of this file are also redistributable under the terms of + * the Mozilla Public license. For information about the Mozilla + * Public License, please see the license information at + * http://www.mozilla.org/MPL/ */ + +/* This code is copyright the following authors: + * Raph Levien <raph@acm.org> + * Manish Singh <manish@gtk.org> + * Tim Janik <timj@gtk.org> + * Peter Mattis <petm@xcf.berkeley.edu> + * Spencer Kimball <spencer@xcf.berkeley.edu> + * Josh MacDonald <jmacd@xcf.berkeley.edu> + * Christopher Blizzard <blizzard@redhat.com> + * Owen Taylor <otaylor@redhat.com> + * Shawn T. Amundson <amundson@gtk.org> +*/ + +#include <math.h> + +#if HAVE_CONFIG_H +# include <config.h> +# if STDC_HEADERS +# include <stdio.h> +# include <stdlib.h> +# include <string.h> +# endif +#else +# include <stdio.h> +# include <stdlib.h> +#endif + +#define ENABLE_GRAYSCALE + +/* include this before so that we can get endian definitions if + they are there... */ + +#include "gdk-pixbuf-xlibrgb.h" +#include "gdk-pixbuf-xlib-private.h" + +#ifndef MIN +#define MIN(a, b) (((a) < (b)) ? (a) : (b)) +#endif + +#ifndef MAX +#define MAX(a, b) (((a) > (b)) ? (a) : (b)) +#endif + +typedef enum { + LSB_FIRST, + MSB_FIRST +} ByteOrder; + + +typedef struct _XlibRgbInfo XlibRgbInfo; + +typedef void (*XlibRgbConvFunc) (XImage *image, + int ax, int ay, + int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, + XlibRgbCmap *cmap); + +/* Some of these fields should go, as they're not being used at all. + Globals should generally migrate into here - it's very likely that + we'll want to run more than one GdkRgbInfo context at the same time + (i.e. some but not all windows have privately installed + colormaps). */ + +struct _XlibRgbInfo +{ + Display *display; + Screen *screen; + int screen_num; + XVisualInfo *x_visual_info; + Colormap cmap; + XColor *cmap_colors; + Visual *default_visualid; + Colormap default_colormap; + + unsigned long *color_pixels; + unsigned long *gray_pixels; + unsigned long *reserved_pixels; + + unsigned long red_shift; + unsigned long red_prec; + unsigned long blue_shift; + unsigned long blue_prec; + unsigned long green_shift; + unsigned long green_prec; + + unsigned int nred_shades; + unsigned int ngreen_shades; + unsigned int nblue_shades; + unsigned int ngray_shades; + unsigned int nreserved; + + unsigned int bpp; + unsigned int cmap_alloced; + double gamma_val; + + /* Generally, the stage buffer is used to convert 32bit RGB, gray, + and indexed images into 24 bit packed RGB. */ + unsigned char *stage_buf; + + XlibRgbCmap *gray_cmap; + + Bool dith_default; + + Bool bitmap; /* set true if in 1 bit per pixel mode */ + GC own_gc; + + /* Convert functions */ + XlibRgbConvFunc conv; + XlibRgbConvFunc conv_d; + + XlibRgbConvFunc conv_32; + XlibRgbConvFunc conv_32_d; + + XlibRgbConvFunc conv_gray; + XlibRgbConvFunc conv_gray_d; + + XlibRgbConvFunc conv_indexed; + XlibRgbConvFunc conv_indexed_d; +}; + +static Bool xlib_rgb_install_cmap = FALSE; +static int xlib_rgb_min_colors = 5 * 5 * 5; +static Bool xlib_rgb_verbose = FALSE; + +#define IMAGE_WIDTH 256 +#define STAGE_ROWSTRIDE (IMAGE_WIDTH * 3) +#define IMAGE_HEIGHT 64 +#define N_IMAGES 6 + +static XlibRgbInfo *image_info = NULL; +static XImage *static_image[N_IMAGES]; +static int static_image_idx; + +static unsigned char *colorcube; +static unsigned char *colorcube_d; + +static unsigned long +xlib_get_prec_from_mask(unsigned long val) +{ + unsigned long retval = 0; + unsigned int cur_bit = 0; + /* walk through the number, incrementing the value if + the bit in question is set. */ + while (cur_bit < (sizeof(unsigned long) * 8)) { + if ((val >> cur_bit) & 0x1) { + retval++; + } + cur_bit++; + } + return retval; +} + +static unsigned long +xlib_get_shift_from_mask(unsigned long val) +{ + unsigned long cur_bit = 0; + /* walk through the number, looking for the first 1 */ + while (cur_bit < (sizeof(unsigned long) * 8)) { + if ((val >> cur_bit) & 0x1) { + return cur_bit; + } + cur_bit++; + } + return cur_bit; +} + + +static int +xlib_rgb_cmap_fail (const char *msg, Colormap cmap, unsigned long *pixels) +{ + unsigned long free_pixels[256]; + int n_free; + int i; + +#ifdef VERBOSE + printf ("%s", msg); +#endif + n_free = 0; + for (i = 0; i < 256; i++) + if (pixels[i] < 256) + free_pixels[n_free++] = pixels[i]; + + if (n_free) + XFreeColors(image_info->display, + cmap, + free_pixels, + n_free, + 0); + return 0; +} + +static void +xlib_rgb_make_colorcube (unsigned long *pixels, int nr, int ng, int nb) +{ + unsigned char rt[16], gt[16], bt[16]; + int i; + + colorcube = malloc(sizeof(unsigned char) * 4096); + memset(colorcube, 0, (sizeof(unsigned char) * 4096)); + for (i = 0; i < 16; i++) + { + rt[i] = ng * nb * ((i * 17 * (nr - 1) + 128) >> 8); + gt[i] = nb * ((i * 17 * (ng - 1) + 128) >> 8); + bt[i] = ((i * 17 * (nb - 1) + 128) >> 8); + } + + for (i = 0; i < 4096; i++) + { + colorcube[i] = pixels[rt[i >> 8] + gt[(i >> 4) & 0x0f] + bt[i & 0x0f]]; +#ifdef VERBOSE + printf ("%03x %02x %x %x %x\n", i, colorcube[i], rt[i >> 8], gt[(i >> 4) & 0x0f], bt[i & 0x0f]); +#endif + } +} + +/* this is the colorcube suitable for dithering */ +static void +xlib_rgb_make_colorcube_d (unsigned long *pixels, int nr, int ng, int nb) +{ + int r, g, b; + int i; + + colorcube_d = malloc(sizeof(unsigned char) * 512); + memset(colorcube_d, 0, (sizeof(unsigned char) * 512)); + for (i = 0; i < 512; i++) + { + r = MIN (nr - 1, i >> 6); + g = MIN (ng - 1, (i >> 3) & 7); + b = MIN (nb - 1, i & 7); + colorcube_d[i] = pixels[(r * ng + g) * nb + b]; + } +} + +/* Try installing a color cube of the specified size. + Make the colorcube and return TRUE on success */ +static int +xlib_rgb_try_colormap (int nr, int ng, int nb) +{ + int r, g, b; + int ri, gi, bi; + int r0, g0, b0; + Colormap cmap; + XVisualInfo *visual; + XColor *colors = NULL; + XColor color; + unsigned long pixels[256]; + unsigned long junk[256]; + int i; + int d2; + unsigned int colors_needed; + int idx; + int best[256]; + + if (nr * ng * nb < xlib_rgb_min_colors) + return FALSE; + + if (image_info->cmap_alloced) { + cmap = image_info->cmap; + visual = image_info->x_visual_info; + } + else { + cmap = image_info->default_colormap; + visual = image_info->x_visual_info; + } + colors_needed = nr * ng * nb; + for (i = 0; i < 256; i++) + { + best[i] = 192; + pixels[i] = 256; + } + +#ifndef GAMMA + if (!xlib_rgb_install_cmap) { + /* go out and get the colors for this colormap. */ + colors = malloc(sizeof(XColor) * visual->colormap_size); + for (i=0; i < visual->colormap_size; i++){ + colors[i].pixel = i; + } + XQueryColors (image_info->display, + cmap, + colors, visual->colormap_size); + /* find color cube colors that are already present */ + for (i = 0; i < MIN (256, visual->colormap_size); i++) + { + r = colors[i].red >> 8; + g = colors[i].green >> 8; + b = colors[i].blue >> 8; + ri = (r * (nr - 1) + 128) >> 8; + gi = (g * (ng - 1) + 128) >> 8; + bi = (b * (nb - 1) + 128) >> 8; + r0 = ri * 255 / (nr - 1); + g0 = gi * 255 / (ng - 1); + b0 = bi * 255 / (nb - 1); + idx = ((ri * nr) + gi) * nb + bi; + d2 = (r - r0) * (r - r0) + (g - g0) * (g - g0) + (b - b0) * (b - b0); + if (d2 < best[idx]) { + if (pixels[idx] < 256) + XFreeColors(image_info->display, + cmap, + pixels + idx, + 1, 0); + else + colors_needed--; + color.pixel = colors[i].pixel; + color.red = colors[i].red; + color.green = colors[i].green; + color.blue = colors[i].blue; + color.flags = 0; + if (!XAllocColor(image_info->display, cmap, &color)) + return xlib_rgb_cmap_fail ("error allocating system color\n", + cmap, pixels); + pixels[idx] = color.pixel; /* which is almost certainly i */ + best[idx] = d2; + } + } + } + +#endif + + if (colors_needed) + { + if (!XAllocColorCells(image_info->display, cmap, 0, NULL, 0, junk, colors_needed)) + { + char tmp_str[80]; + + sprintf (tmp_str, + "%d %d %d colormap failed (in XAllocColorCells)\n", + nr, ng, nb); + return xlib_rgb_cmap_fail (tmp_str, cmap, pixels); + } + XFreeColors(image_info->display, cmap, junk, (int)colors_needed, 0); + } + + for (r = 0, i = 0; r < nr; r++) + for (g = 0; g < ng; g++) + for (b = 0; b < nb; b++, i++) + { + if (pixels[i] == 256) + { + color.red = r * 65535 / (nr - 1); + color.green = g * 65535 / (ng - 1); + color.blue = b * 65535 / (nb - 1); + +#ifdef GAMMA + color.red = 65535 * pow (color.red / 65535.0, 0.5); + color.green = 65535 * pow (color.green / 65535.0, 0.5); + color.blue = 65535 * pow (color.blue / 65535.0, 0.5); +#endif + + /* This should be a raw XAllocColor call */ + if (!XAllocColor(image_info->display, cmap, &color)) + { + char tmp_str[80]; + + sprintf (tmp_str, "%d %d %d colormap failed\n", + nr, ng, nb); + return xlib_rgb_cmap_fail (tmp_str, + cmap, pixels); + } + pixels[i] = color.pixel; + } +#ifdef VERBOSE + printf ("%d: %lx\n", i, pixels[i]); +#endif + } + + image_info->nred_shades = nr; + image_info->ngreen_shades = ng; + image_info->nblue_shades = nb; + xlib_rgb_make_colorcube (pixels, nr, ng, nb); + xlib_rgb_make_colorcube_d (pixels, nr, ng, nb); + if (colors) + free(colors); + return TRUE; +} + +/* Return TRUE on success. */ +static Bool +xlib_rgb_do_colormaps (void) +{ + static const int sizes[][3] = { + /* { 6, 7, 6 }, */ + { 6, 6, 6 }, + { 6, 6, 5 }, + { 6, 6, 4 }, + { 5, 5, 5 }, + { 5, 5, 4 }, + { 4, 4, 4 }, + { 4, 4, 3 }, + { 3, 3, 3 }, + { 2, 2, 2 } + }; + static const int n_sizes = sizeof(sizes) / (3 * sizeof(int)); + int i; + + for (i = 0; i < n_sizes; i++) + if (xlib_rgb_try_colormap (sizes[i][0], sizes[i][1], sizes[i][2])) + return TRUE; + return FALSE; +} + +/* Make a 2 x 2 x 2 colorcube */ +static void +xlib_rgb_colorcube_222 (void) +{ + int i; + XColor color; + Colormap cmap; + + if (image_info->cmap_alloced) + cmap = image_info->cmap; + else + cmap = image_info->default_colormap; + + colorcube_d = malloc(sizeof(unsigned char) * 512); + + for (i = 0; i < 8; i++) + { + color.red = ((i & 4) >> 2) * 65535; + color.green = ((i & 2) >> 1) * 65535; + color.blue = (i & 1) * 65535; + XAllocColor (image_info->display, cmap, &color); + colorcube_d[((i & 4) << 4) | ((i & 2) << 2) | (i & 1)] = color.pixel; + } +} + +/** + * xlib_rgb_set_verbose: + * @verbose: %True to be verbose + * + * Enables/disables debug spew. + **/ +void +xlib_rgb_set_verbose (Bool verbose) +{ + xlib_rgb_verbose = verbose; +} + +/** + * xlib_rgb_set_install: + * @install: %True to install a colormap + * + * Sets whether we install an RGB colormap. + **/ +void +xlib_rgb_set_install (Bool install) +{ + xlib_rgb_install_cmap = install; +} + +/** + * xlib_rgb_set_min_colors: + * @min_colors: minimum colors to use + * + * Sets the minimum number of colors in the color cube. + **/ +void +xlib_rgb_set_min_colors (int min_colors) +{ + xlib_rgb_min_colors = min_colors; +} + +/* Return a "score" based on the following criteria (in hex): + + x000 is the quality - 1 is 1bpp, 2 is 4bpp, + 4 is 8bpp, + 7 is 15bpp truecolor, 8 is 16bpp truecolor, + 9 is 24bpp truecolor. + 0x00 is the speed - 1 is the normal case, + 2 means faster than normal + 00x0 gets a point for being the system visual + 000x gets a point for being pseudocolor + + A caveat: in the 8bpp modes, being the system visual seems to be + quite important. Thus, all of the 8bpp modes should be ranked at + the same speed. +*/ + +static unsigned int +xlib_rgb_score_visual (XVisualInfo *visual) +{ + unsigned int quality, speed, pseudo, sys; + static const char* visual_names[] = + { + "static gray", + "grayscale", + "static color", + "pseudo color", + "true color", + "direct color", + }; + + + quality = 0; + speed = 1; + sys = 0; + if (visual->class == TrueColor || + visual->class == DirectColor) + { + if (visual->depth == 24) + { + quality = 9; + /* Should test for MSB visual here, and set speed if so. */ + } + else if (visual->depth == 16) + quality = 8; + else if (visual->depth == 15) + quality = 7; + else if (visual->depth == 8) + quality = 4; + } + else if (visual->class == PseudoColor || + visual->class == StaticColor) + { + if (visual->depth == 8) + quality = 4; + else if (visual->depth == 4) + quality = 2; + else if (visual->depth == 1) + quality = 1; + } + else if (visual->class == StaticGray +#ifdef ENABLE_GRAYSCALE + || visual->class == GrayScale +#endif + ) + { + if (visual->depth == 8) + quality = 4; + else if (visual->depth == 4) + quality = 2; + else if (visual->depth == 1) + quality = 1; + } + + if (quality == 0) + return 0; + + sys = (visual->visualid == image_info->default_visualid->visualid); + + pseudo = (visual->class == PseudoColor || visual->class == TrueColor); + + if (xlib_rgb_verbose) + printf ("Visual 0x%x, type = %s, depth = %d, %ld:%ld:%ld%s; score=%x\n", + (int)visual->visualid, + visual_names[visual->class], + visual->depth, + visual->red_mask, + visual->green_mask, + visual->blue_mask, + sys ? " (system)" : "", + (quality << 12) | (speed << 8) | (sys << 4) | pseudo); + + return (quality << 12) | (speed << 8) | (sys << 4) | pseudo; +} + +static void +xlib_rgb_choose_visual (void) +{ + XVisualInfo *visuals; + XVisualInfo *visual; + XVisualInfo *best_visual; + XVisualInfo *final_visual; + XVisualInfo template; + int num_visuals; + unsigned int score, best_score; + int cur_visual = 1; + int i; + + template.screen = image_info->screen_num; + visuals = XGetVisualInfo(image_info->display, VisualScreenMask, + &template, &num_visuals); + + best_visual = visuals; + best_score = xlib_rgb_score_visual (best_visual); + + for (i = cur_visual; i < num_visuals; i++) + { + visual = &visuals[i]; + score = xlib_rgb_score_visual (visual); + if (score > best_score) + { + best_score = score; + best_visual = visual; + } + } + /* make a copy of the visual so that we can free + the allocated visual list above. */ + final_visual = malloc(sizeof(XVisualInfo)); + memcpy(final_visual, best_visual, sizeof(XVisualInfo)); + image_info->x_visual_info = final_visual; + XFree(visuals); + /* set up the shift and the precision for the red, green and blue. + this only applies to cool visuals like true color and direct color. */ + if (image_info->x_visual_info->class == TrueColor || + image_info->x_visual_info->class == DirectColor) { + image_info->red_shift = xlib_get_shift_from_mask(image_info->x_visual_info->red_mask); + image_info->red_prec = xlib_get_prec_from_mask(image_info->x_visual_info->red_mask); + image_info->green_shift = xlib_get_shift_from_mask(image_info->x_visual_info->green_mask); + image_info->green_prec = xlib_get_prec_from_mask(image_info->x_visual_info->green_mask); + image_info->blue_shift = xlib_get_shift_from_mask(image_info->x_visual_info->blue_mask); + image_info->blue_prec = xlib_get_prec_from_mask(image_info->x_visual_info->blue_mask); + } +} + +static void +xlib_rgb_choose_visual_for_xprint (int aDepth) +{ + XVisualInfo *visuals; + XVisualInfo *visual; + XVisualInfo *best_visual; + XVisualInfo *final_visual; + XVisualInfo template; + int num_visuals; + int cur_visual = 1; + int i; + + XWindowAttributes win_att; + Status ret_stat; + Visual *root_visual; + + ret_stat = XGetWindowAttributes(image_info->display, + RootWindow(image_info->display, image_info->screen_num), + &win_att); + root_visual = win_att.visual; + template.screen = image_info->screen_num; + visuals = XGetVisualInfo(image_info->display, VisualScreenMask, + &template, &num_visuals); + + best_visual = visuals; + if (best_visual->visual != root_visual) { + for (i = cur_visual; i < num_visuals; i++) { + visual = &visuals[i]; + if (visual->visual == root_visual) { + best_visual = visual; + break; + } + } + } + /* make a copy of the visual so that we can free + the allocated visual list above. */ + final_visual = malloc(sizeof(XVisualInfo)); + memcpy(final_visual, best_visual, sizeof(XVisualInfo)); + image_info->x_visual_info = final_visual; + XFree(visuals); + /* set up the shift and the precision for the red, green and blue. + this only applies to cool visuals like true color and direct color. */ + if (image_info->x_visual_info->class == TrueColor || + image_info->x_visual_info->class == DirectColor) { + image_info->red_shift = xlib_get_shift_from_mask(image_info->x_visual_info->red_mask); + image_info->red_prec = xlib_get_prec_from_mask(image_info->x_visual_info->red_mask); + image_info->green_shift = xlib_get_shift_from_mask(image_info->x_visual_info->green_mask); + image_info->green_prec = xlib_get_prec_from_mask(image_info->x_visual_info->green_mask); + image_info->blue_shift = xlib_get_shift_from_mask(image_info->x_visual_info->blue_mask); + image_info->blue_prec = xlib_get_prec_from_mask(image_info->x_visual_info->blue_mask); + } +} + +static void xlib_rgb_select_conv (XImage *image, ByteOrder byte_order); + +static void +xlib_rgb_set_gray_cmap (Colormap cmap) +{ + int i; + XColor color; + int status; + unsigned long pixels[256]; + int r, g, b, gray; + + for (i = 0; i < 256; i++) + { + color.pixel = i; + color.red = i * 257; + color.green = i * 257; + color.blue = i * 257; + status = XAllocColor(image_info->display, cmap, &color); + pixels[i] = color.pixel; +#ifdef VERBOSE + printf ("allocating pixel %d, %x %x %x, result %d\n", + color.pixel, color.red, color.green, color.blue, status); +#endif + } + + /* Now, we make fake colorcubes - we ultimately just use the pseudocolor + methods. */ + + colorcube = malloc(sizeof(unsigned char) * 4096); + + for (i = 0; i < 4096; i++) + { + r = (i >> 4) & 0xf0; + r = r | r >> 4; + g = i & 0xf0; + g = g | g >> 4; + b = (i << 4 & 0xf0); + b = b | b >> 4; + gray = (g + ((r + b) >> 1)) >> 1; + colorcube[i] = pixels[gray]; + } +} + +/** + * xlib_rgb_init: + * @display: X Display to use. + * @screen: Screen to use. + * + * Initializes the XlibRGB machinery with the default depth. If you use this + * function XlibRGB will automatically pick the best visual available on your + * display. This function or xlib_rgb_init_with_depth() must be called before + * using any of the other functions in XlibRGB. + **/ +void +xlib_rgb_init (Display *display, Screen *screen) +{ + int prefDepth = -1; /* let the function do the visual scoring */ + xlib_rgb_init_with_depth(display, screen, prefDepth); +} + +/** + * xlib_rgb_init_with_depth: + * @display: X display to use. + * @screen: Screen to use. + * @prefDepth: Visual depth to use for color substitution tables. This must + * be one of the supported visual depths in the specified @display. + * + * Initializes the XlibRGB machinery with a particular depth you specify, + * instead of automatically picking the best depth in the display. This + * function or xlib_rgb_init() must be called before using any of the other + * functions in XlibRGB. + **/ +void +xlib_rgb_init_with_depth (Display *display, Screen *screen, int prefDepth) +{ + int i; + static const int byte_order[1] = { 1 }; + + static int initialized = 0; + + if (initialized) + { + return; + } + + initialized = 1; + +#if KSVG_BYTE_ORDER == KSVG_BIG_ENDIAN + if (((char *)byte_order)[0] == 1) { + printf ("xlib_rgb_init: compiled for big endian, but this is a little endian machine.\n\n"); + exit(1); + } +#else + if (((char *)byte_order)[0] != 1) { + printf ("xlib_rgb_init: compiled for little endian, but this is a big endian machine.\n\n"); + exit(1); + } +#endif + + if (image_info == NULL) + { + image_info = malloc(sizeof(XlibRgbInfo)); + memset(image_info, 0, sizeof(XlibRgbInfo)); + + image_info->display = display; + image_info->screen = screen; + image_info->screen_num = XScreenNumberOfScreen(screen); + image_info->x_visual_info = NULL; + image_info->cmap = 0; + image_info->default_visualid = DefaultVisual(display, image_info->screen_num); + image_info->default_colormap = DefaultColormap(display, image_info->screen_num); + + image_info->color_pixels = NULL; + image_info->gray_pixels = NULL; + image_info->reserved_pixels = NULL; + + image_info->nred_shades = 6; + image_info->ngreen_shades = 6; + image_info->nblue_shades = 4; + image_info->ngray_shades = 24; + image_info->nreserved = 0; + + image_info->bpp = 0; + image_info->cmap_alloced = FALSE; + image_info->gamma_val = 1.0; + + image_info->stage_buf = NULL; + + image_info->own_gc = 0; + + image_info->red_shift = 0; + image_info->red_prec = 0; + image_info->green_shift = 0; + image_info->green_prec = 0; + image_info->blue_shift = 0; + image_info->blue_prec = 0; + + if (prefDepth != -1) + xlib_rgb_choose_visual_for_xprint (prefDepth); + else + xlib_rgb_choose_visual (); + + if ((image_info->x_visual_info->class == PseudoColor || + image_info->x_visual_info->class == StaticColor) && + image_info->x_visual_info->depth < 8 && + image_info->x_visual_info->depth >= 3) + { + image_info->cmap = image_info->default_colormap; + xlib_rgb_colorcube_222 (); + } + else if (image_info->x_visual_info->class == PseudoColor) + { + if (xlib_rgb_install_cmap || + image_info->x_visual_info->visualid != image_info->default_visualid->visualid) + { + image_info->cmap = XCreateColormap(image_info->display, + RootWindow(image_info->display, image_info->screen_num), + image_info->x_visual_info->visual, + AllocNone); + image_info->cmap_alloced = TRUE; + } + if (!xlib_rgb_do_colormaps ()) + { + image_info->cmap = XCreateColormap(image_info->display, + RootWindow(image_info->display, image_info->screen_num), + image_info->x_visual_info->visual, + AllocNone); + image_info->cmap_alloced = TRUE; + xlib_rgb_do_colormaps (); + } + if (xlib_rgb_verbose) + printf ("color cube: %d x %d x %d\n", + image_info->nred_shades, + image_info->ngreen_shades, + image_info->nblue_shades); + + if (!image_info->cmap_alloced) + image_info->cmap = image_info->default_colormap; + } +#ifdef ENABLE_GRAYSCALE + else if (image_info->x_visual_info->class == GrayScale) + { + image_info->cmap = XCreateColormap(image_info->display, + RootWindow(image_info->display, image_info->screen_num), + image_info->x_visual_info->visual, + AllocNone); + xlib_rgb_set_gray_cmap (image_info->cmap); + image_info->cmap_alloced = TRUE; + } +#endif + else + { + /* Always install colormap in direct color. */ + if (image_info->x_visual_info->class != DirectColor && + image_info->x_visual_info->visualid == image_info->default_visualid->visualid) + image_info->cmap = image_info->default_colormap; + else + { + image_info->cmap = XCreateColormap(image_info->display, + RootWindow(image_info->display, image_info->screen_num), + image_info->x_visual_info->visual, + AllocNone); + image_info->cmap_alloced = TRUE; + } + } + + image_info->bitmap = (image_info->x_visual_info->depth == 1); + + for (i = 0; i < N_IMAGES; i++) { + if (image_info->bitmap) { + /* Use malloc() instead of g_malloc since X will free() this mem */ + static_image[i] = XCreateImage(image_info->display, + image_info->x_visual_info->visual, + 1, + XYBitmap, + 0, 0, IMAGE_WIDTH, IMAGE_HEIGHT, + 8, + 0); + static_image[i]->data = malloc(IMAGE_WIDTH * IMAGE_HEIGHT >> 3); + static_image[i]->bitmap_bit_order = MSBFirst; + static_image[i]->byte_order = MSBFirst; + } + else { + static_image[i] = XCreateImage(image_info->display, + image_info->x_visual_info->visual, + (unsigned int)image_info->x_visual_info->depth, + ZPixmap, + 0, 0, + IMAGE_WIDTH, + IMAGE_HEIGHT, + 32, 0); + /* remove this when we are using shared memory.. */ + static_image[i]->data = malloc((size_t)IMAGE_WIDTH * IMAGE_HEIGHT * image_info->x_visual_info->depth); + static_image[i]->bitmap_bit_order = MSBFirst; + static_image[i]->byte_order = MSBFirst; + } + } + /* ok, so apparently, image_info->bpp is actually + BYTES per pixel. What fun! */ + switch (static_image[0]->bits_per_pixel) { + case 1: + case 8: + image_info->bpp = 1; + break; + case 16: + image_info->bpp = 2; + break; + case 24: + image_info->bpp = 3; + break; + case 32: + image_info->bpp = 4; + break; + } + xlib_rgb_select_conv (static_image[0], MSB_FIRST); + } +} + +/** + * xlib_rgb_xpixel_from_rgb: + * @rgb: 32-bit representation of an RGB value, specified as 0x00RRGGBB. + * + * Converts an RGB triplet into the closest color that XlibRGB visual can + * handle. + * + * Return value: X pixel value that corresponds to the closest color in the + * XlibRGB visual and colormap. + **/ +unsigned long +xlib_rgb_xpixel_from_rgb (unsigned int rgb) +{ + unsigned long pixel = 0; + + if (image_info->bitmap) + { + return ((rgb & 0xff0000) >> 16) + + ((rgb & 0xff00) >> 7) + + (rgb & 0xff) > 510; + } + else if (image_info->x_visual_info->class == PseudoColor) + pixel = colorcube[((rgb & 0xf00000) >> 12) | + ((rgb & 0xf000) >> 8) | + ((rgb & 0xf0) >> 4)]; + else if (image_info->x_visual_info->depth < 8 && + image_info->x_visual_info->class == StaticColor) + { + pixel = colorcube_d[((rgb & 0x800000) >> 17) | + ((rgb & 0x8000) >> 12) | + ((rgb & 0x80) >> 7)]; + } + else if (image_info->x_visual_info->class == TrueColor || + image_info->x_visual_info->class == DirectColor) + { +#ifdef VERBOSE + printf ("shift, prec: r %d %d g %d %d b %d %d\n", + image_info->red_shift, + image_info->red_prec, + image_info->green_shift, + image_info->green_prec, + image_info->blue_shift, + image_info->blue_prec); +#endif + + pixel = (((((rgb & 0xff0000) >> 16) >> + (8 - image_info->red_prec)) << + image_info->red_shift) + + ((((rgb & 0xff00) >> 8) >> + (8 - image_info->green_prec)) << + image_info->green_shift) + + (((rgb & 0xff) >> + (8 - image_info->blue_prec)) << + image_info->blue_shift)); + } + else if (image_info->x_visual_info->class == StaticGray || + image_info->x_visual_info->class == GrayScale) + { + int gray = ((rgb & 0xff0000) >> 16) + + ((rgb & 0xff00) >> 7) + + (rgb & 0xff); + + return gray >> (10 - image_info->x_visual_info->depth); + } + + return pixel; +} + +/** + * xlib_rgb_gc_set_foreground: + * @gc: A graphic context. + * @rgb: 32-bit representation of an RGB value, specified as 0x00RRGGBB. + * + * This is a convenience function to set the foreground of a GC from an RGB + * triplet. It calls xlib_rgb_xpixel_from_rgb() internally and uses the + * returned pixel value to set the GC's foreground. + **/ +void +xlib_rgb_gc_set_foreground (GC gc, unsigned int rgb) +{ + unsigned long color; + + color = xlib_rgb_xpixel_from_rgb (rgb); + XSetForeground(image_info->display, gc, color); +} + +/** + * xlib_rgb_gc_set_background: + * @gc: A graphic context. + * @rgb: 32-bit representation of an RGB value, specified as 0x00RRGGBB. + * + * This is a convenience function to set the background of a GC from an RGB + * triplet. It calls xlib_rgb_xpixel_from_rgb() internally and uses the + * returned pixel value to set the GC's background. + **/ +void +xlib_rgb_gc_set_background (GC gc, unsigned int rgb) +{ + unsigned long color; + + color = xlib_rgb_xpixel_from_rgb (rgb); + XSetBackground(image_info->display, gc, color); +} + +#if KSVG_BYTE_ORDER == KSVG_LITTLE_ENDIAN +#define HAIRY_CONVERT_8 +#endif + +#ifdef HAIRY_CONVERT_8 +static void +xlib_rgb_convert_8 (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, XlibRgbCmap *cmap) +{ + int x, y; + int bpl; + unsigned char *obuf, *obptr; + unsigned char *bptr, *bp2; + int r, g, b; + + bptr = buf; + bpl = image->bytes_per_line; + obuf = ((unsigned char *)image->data) + ay * bpl + ax; + for (y = 0; y < height; y++) + { + bp2 = bptr; + obptr = obuf; + if (((unsigned long)obuf | (unsigned long) bp2) & 3) + { + for (x = 0; x < width; x++) + { + r = *bp2++; + g = *bp2++; + b = *bp2++; + obptr[0] = colorcube[((r & 0xf0) << 4) | + (g & 0xf0) | + (b >> 4)]; + obptr++; + } + } + else + { + for (x = 0; x < width - 3; x += 4) + { + unsigned int r1b0g0r0; + unsigned int g2r2b1g1; + unsigned int b3g3r3b2; + + r1b0g0r0 = ((unsigned int *)bp2)[0]; + g2r2b1g1 = ((unsigned int *)bp2)[1]; + b3g3r3b2 = ((unsigned int *)bp2)[2]; + ((unsigned int *)obptr)[0] = + colorcube[((r1b0g0r0 & 0xf0) << 4) | + ((r1b0g0r0 & 0xf000) >> 8) | + ((r1b0g0r0 & 0xf00000) >> 20)] | + (colorcube[((r1b0g0r0 & 0xf0000000) >> 20) | + (g2r2b1g1 & 0xf0) | + ((g2r2b1g1 & 0xf000) >> 12)] << 8) | + (colorcube[((g2r2b1g1 & 0xf00000) >> 12) | + ((g2r2b1g1 & 0xf0000000) >> 24) | + ((b3g3r3b2 & 0xf0) >> 4)] << 16) | + (colorcube[((b3g3r3b2 & 0xf000) >> 4) | + ((b3g3r3b2 & 0xf00000) >> 16) | + (b3g3r3b2 >> 28)] << 24); + bp2 += 12; + obptr += 4; + } + for (; x < width; x++) + { + r = *bp2++; + g = *bp2++; + b = *bp2++; + obptr[0] = colorcube[((r & 0xf0) << 4) | + (g & 0xf0) | + (b >> 4)]; + obptr++; + } + } + bptr += rowstride; + obuf += bpl; + } +} +#else +static void +xlib_rgb_convert_8 (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, XlibRgbCmap *cmap) +{ + int x, y; + int bpl; + unsigned char *obuf, *obptr; + unsigned char *bptr, *bp2; + int r, g, b; + + bptr = buf; + bpl = image->bytes_per_line; + obuf = ((unsigned char *)image->data) + ay * bpl + ax; + for (y = 0; y < height; y++) + { + bp2 = bptr; + obptr = obuf; + for (x = 0; x < width; x++) + { + r = *bp2++; + g = *bp2++; + b = *bp2++; + obptr[0] = colorcube[((r & 0xf0) << 4) | + (g & 0xf0) | + (b >> 4)]; + obptr++; + } + bptr += rowstride; + obuf += bpl; + } +} +#endif + +#if 1 + +/* This dither table was generated by Raph Levien using patented + technology (US Patent 5,276,535). The dither table itself is in the + public domain. */ + +#define DM_WIDTH 128 +#define DM_WIDTH_SHIFT 7 +#define DM_HEIGHT 128 +static const unsigned char DM[128][128] = +{ + { 0, 41, 23, 5, 17, 39, 7, 15, 62, 23, 40, 51, 31, 47, 9, 32, 52, 27, 57, 25, 6, 61, 27, 52, 37, 7, 40, 63, 18, 36, 10, 42, 25, 62, 45, 34, 20, 42, 37, 14, 35, 29, 50, 10, 61, 2, 40, 8, 37, 12, 58, 22, 5, 41, 10, 39, 0, 60, 11, 46, 2, 55, 38, 17, 36, 59, 13, 54, 37, 56, 8, 29, 16, 13, 63, 22, 41, 55, 7, 20, 49, 14, 23, 55, 37, 23, 19, 36, 15, 49, 23, 63, 30, 14, 38, 27, 53, 13, 22, 41, 19, 31, 7, 19, 50, 30, 49, 16, 3, 32, 56, 40, 29, 34, 8, 48, 19, 45, 4, 51, 12, 46, 35, 49, 16, 42, 12, 62 }, + { 30, 57, 36, 54, 47, 34, 52, 27, 43, 4, 28, 7, 17, 36, 62, 13, 44, 7, 18, 48, 33, 21, 44, 14, 30, 47, 12, 33, 5, 55, 31, 58, 13, 30, 4, 17, 52, 10, 60, 26, 46, 0, 39, 27, 42, 22, 47, 25, 60, 32, 9, 38, 48, 17, 59, 30, 49, 18, 34, 25, 51, 19, 5, 48, 21, 8, 28, 46, 1, 32, 41, 19, 54, 47, 37, 18, 28, 11, 44, 30, 39, 56, 2, 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63, 24, 19, 39, 2, 24, 47, 10, 60, 38, 19, 63, 48, 4, 15, 45, 32, 14, 60, 36, 29, 53, 23, 63, 34, 12, 61, 1, 43, 11, 53, 30, 1, 26, 60, 45, 23, 39, 3, 29, 12, 50, 4, 16, 51, 3, 45, 36, 50, 1, 16, 54, 35, 14, 57, 30, 58, 9, 46, 14, 41, 10, 32, 38, 4, 30, 21, 51, 32, 63, 25, 1, 60, 27, 53, 18, 51, 22, 28, 55, 34, 12, 40, 3, 60, 29, 57, 41, 6, 44, 11, 53, 8, 61, 24, 57, 1, 28, 44, 59, 36, 3, 34, 25, 41, 31, 16, 44, 22, 47, 28, 58, 1, 49, 54, 29 }, + { 58, 25, 50, 13, 38, 30, 60, 24, 6, 57, 27, 42, 9, 45, 6, 61, 30, 50, 4, 34, 29, 3, 46, 13, 22, 42, 58, 28, 9, 39, 23, 44, 7, 15, 44, 2, 40, 15, 47, 41, 23, 37, 7, 59, 38, 11, 34, 6, 62, 14, 52, 35, 55, 19, 32, 61, 33, 24, 57, 6, 22, 59, 29, 7, 49, 25, 40, 3, 17, 39, 27, 52, 0, 55, 16, 57, 24, 61, 36, 6, 29, 12, 48, 39, 20, 44, 6, 40, 33, 5, 48, 10, 57, 36, 22, 51, 33, 9, 24, 12, 62, 29, 50, 35, 14, 43, 5, 33, 47, 52, 13, 23, 10, 51, 56, 16, 46, 1, 49, 4, 61, 9, 52, 18, 31, 21, 36, 17 }, + { 19, 42, 9, 48, 2, 44, 11, 37, 48, 20, 33, 16, 55, 35, 49, 15, 37, 20, 59, 16, 53, 22, 56, 31, 50, 11, 34, 54, 16, 51, 4, 49, 33, 53, 21, 28, 56, 24, 31, 9, 52, 16, 48, 24, 44, 13, 51, 20, 31, 49, 18, 6, 34, 2, 44, 14, 47, 8, 15, 43, 13, 41, 33, 52, 20, 61, 7, 51, 34, 62, 4, 20, 36, 33, 43, 8, 46, 13, 53, 17, 45, 42, 9, 31, 52, 11, 30, 56, 13, 59, 17, 44, 27, 6, 62, 11, 43, 17, 49, 38, 26, 2, 16, 27, 58, 21, 54, 18, 26, 5, 35, 61, 43, 27, 7, 39, 14, 58, 37, 55, 20, 33, 13, 40, 62, 10, 55, 5 }, + { 51, 14, 61, 29, 59, 20, 55, 31, 0, 49, 11, 60, 3, 26, 22, 56, 0, 40, 12, 43, 41, 8, 36, 0, 17, 57, 24, 2, 46, 26, 61, 18, 0, 38, 12, 59, 6, 49, 3, 57, 19, 63, 5, 33, 18, 54, 28, 56, 0, 43, 26, 46, 63, 27, 56, 22, 27, 54, 38, 28, 63, 24, 10, 45, 0, 31, 42, 21, 12, 25, 44, 49, 59, 6, 26, 50, 3, 34, 27, 59, 0, 35, 62, 16, 4, 58, 47, 0, 43, 24, 37, 2, 54, 20, 46, 31, 0, 56, 34, 5, 55, 45, 60, 37, 0, 40, 10, 38, 63, 46, 15, 20, 0, 53, 21, 62, 30, 11, 24, 27, 40, 0, 57, 26, 3, 45, 27, 35 }, +}; + +#else +#define DM_WIDTH 8 +#define DM_WIDTH_SHIFT 3 +#define DM_HEIGHT 8 +static const unsigned char DM[8][8] = +{ + { 0, 32, 8, 40, 2, 34, 10, 42 }, + { 48, 16, 56, 24, 50, 18, 58, 26 }, + { 12, 44, 4, 36, 14, 46, 6, 38 }, + { 60, 28, 52, 20, 62, 30, 54, 22 }, + { 3, 35, 11, 43, 1, 33, 9, 41 }, + { 51, 19, 59, 27, 49, 17, 57, 25 }, + { 15, 47, 7, 39, 13, 45, 5, 37 }, + { 63, 31, 55, 23, 61, 29, 53, 21 } +}; +#endif + +static unsigned int *DM_565 = NULL; + +static void +xlib_rgb_preprocess_dm_565 (void) +{ + int i; + unsigned int dith; + + if (DM_565 == NULL) + { + DM_565 = malloc(sizeof(unsigned int) * DM_WIDTH * DM_HEIGHT); + for (i = 0; i < DM_WIDTH * DM_HEIGHT; i++) + { + dith = DM[0][i] >> 3; + DM_565[i] = (dith << 20) | dith | (((7 - dith) >> 1) << 10); +#ifdef VERBOSE + printf ("%i %x %x\n", i, dith, DM_565[i]); +#endif + } + } +} + +static void +xlib_rgb_convert_8_d666 (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, XlibRgbCmap *cmap) +{ + int x, y; + int bpl; + unsigned char *obuf, *obptr; + unsigned char *bptr, *bp2; + int r, g, b; + const unsigned char *dmp; + int dith; + + bptr = buf; + bpl = image->bytes_per_line; + obuf = ((unsigned char *)image->data) + ay * bpl + ax; + for (y = 0; y < height; y++) + { + dmp = DM[(y_align + y) & (DM_HEIGHT - 1)]; + bp2 = bptr; + obptr = obuf; + for (x = 0; x < width; x++) + { + r = *bp2++; + g = *bp2++; + b = *bp2++; + dith = (dmp[(x_align + x) & (DM_WIDTH - 1)] << 2) | 7; + r = ((r * 5) + dith) >> 8; + g = ((g * 5) + (262 - dith)) >> 8; + b = ((b * 5) + dith) >> 8; + obptr[0] = colorcube_d[(r << 6) | (g << 3) | b]; + obptr++; + } + bptr += rowstride; + obuf += bpl; + } +} + +static void +xlib_rgb_convert_8_d (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, + XlibRgbCmap *cmap) +{ + int x, y; + int bpl; + unsigned char *obuf, *obptr; + unsigned char *bptr, *bp2; + int r, g, b; + const unsigned char *dmp; + int dith; + int rs, gs, bs; + + bptr = buf; + bpl = image->bytes_per_line; + rs = image_info->nred_shades - 1; + gs = image_info->ngreen_shades - 1; + bs = image_info->nblue_shades - 1; + obuf = ((unsigned char *)image->data) + ay * bpl + ax; + for (y = 0; y < height; y++) + { + dmp = DM[(y_align + y) & (DM_HEIGHT - 1)]; + bp2 = bptr; + obptr = obuf; + for (x = 0; x < width; x++) + { + r = *bp2++; + g = *bp2++; + b = *bp2++; + dith = (dmp[(x_align + x) & (DM_WIDTH - 1)] << 2) | 7; + r = ((r * rs) + dith) >> 8; + g = ((g * gs) + (262 - dith)) >> 8; + b = ((b * bs) + dith) >> 8; + obptr[0] = colorcube_d[(r << 6) | (g << 3) | b]; + obptr++; + } + bptr += rowstride; + obuf += bpl; + } +} + +static void +xlib_rgb_convert_8_indexed (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, XlibRgbCmap *cmap) +{ + int x, y; + int bpl; + unsigned char *obuf, *obptr; + unsigned char *bptr, *bp2; + unsigned char c; + unsigned char *lut; + + lut = cmap->lut; + bptr = buf; + bpl = image->bytes_per_line; + obuf = ((unsigned char *)image->data) + ay * bpl + ax; + for (y = 0; y < height; y++) + { + bp2 = bptr; + obptr = obuf; + for (x = 0; x < width; x++) + { + c = *bp2++; + obptr[0] = lut[c]; + obptr++; + } + bptr += rowstride; + obuf += bpl; + } +} + +static void +xlib_rgb_convert_gray8 (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, XlibRgbCmap *cmap) +{ + int x, y; + int bpl; + unsigned char *obuf, *obptr; + unsigned char *bptr, *bp2; + int r, g, b; + + bptr = buf; + bpl = image->bytes_per_line; + obuf = ((unsigned char *)image->data) + ay * bpl + ax; + for (y = 0; y < height; y++) + { + bp2 = bptr; + obptr = obuf; + for (x = 0; x < width; x++) + { + r = *bp2++; + g = *bp2++; + b = *bp2++; + obptr[0] = (g + ((b + r) >> 1)) >> 1; + obptr++; + } + bptr += rowstride; + obuf += bpl; + } +} + +static void +xlib_rgb_convert_gray8_gray (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, XlibRgbCmap *cmap) +{ + int y; + int bpl; + unsigned char *obuf; + unsigned char *bptr; + + bptr = buf; + bpl = image->bytes_per_line; + obuf = ((unsigned char *)image->data) + ay * bpl + ax; + for (y = 0; y < height; y++) + { + memcpy (obuf, bptr, (unsigned int)width); + bptr += rowstride; + obuf += bpl; + } +} + +#if KSVG_BYTE_ORDER == KSVG_LITTLE_ENDIAN +#define HAIRY_CONVERT_565 +#endif + +#ifdef HAIRY_CONVERT_565 +/* Render a 24-bit RGB image in buf into the GdkImage, without dithering. + This assumes native byte ordering - what should really be done is to + check whether static_image->byte_order is consistent with the _ENDIAN + config flag, and if not, use a different function. + + This one is even faster than the one below - its inner loop loads 3 + words (i.e. 4 24-bit pixels), does a lot of shifting and masking, + then writes 2 words. */ +static void +xlib_rgb_convert_565 (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, XlibRgbCmap *cmap) +{ + int x, y; + unsigned char *obuf, *obptr; + int bpl; + unsigned char *bptr, *bp2; + unsigned char r, g, b; + + bptr = buf; + bpl = image->bytes_per_line; + obuf = ((unsigned char *)image->data) + ay * bpl + ax * 2; + for (y = 0; y < height; y++) + { + bp2 = bptr; + obptr = obuf; + if (((unsigned long)obuf | (unsigned long) bp2) & 3) + { + for (x = 0; x < width; x++) + { + r = *bp2++; + g = *bp2++; + b = *bp2++; + ((unsigned short *)obptr)[0] = ((r & 0xf8) << 8) | + ((g & 0xfc) << 3) | + (b >> 3); + obptr += 2; + } + } + else + { + for (x = 0; x < width - 3; x += 4) + { + unsigned int r1b0g0r0; + unsigned int g2r2b1g1; + unsigned int b3g3r3b2; + + r1b0g0r0 = ((unsigned int *)bp2)[0]; + g2r2b1g1 = ((unsigned int *)bp2)[1]; + b3g3r3b2 = ((unsigned int *)bp2)[2]; + ((unsigned int *)obptr)[0] = + ((r1b0g0r0 & 0xf8) << 8) | + ((r1b0g0r0 & 0xfc00) >> 5) | + ((r1b0g0r0 & 0xf80000) >> 19) | + (r1b0g0r0 & 0xf8000000) | + ((g2r2b1g1 & 0xfc) << 19) | + ((g2r2b1g1 & 0xf800) << 5); + ((unsigned int *)obptr)[1] = + ((g2r2b1g1 & 0xf80000) >> 8) | + ((g2r2b1g1 & 0xfc000000) >> 21) | + ((b3g3r3b2 & 0xf8) >> 3) | + ((b3g3r3b2 & 0xf800) << 16) | + ((b3g3r3b2 & 0xfc0000) << 3) | + ((b3g3r3b2 & 0xf8000000) >> 11); + bp2 += 12; + obptr += 8; + } + for (; x < width; x++) + { + r = *bp2++; + g = *bp2++; + b = *bp2++; + ((unsigned short *)obptr)[0] = ((r & 0xf8) << 8) | + ((g & 0xfc) << 3) | + (b >> 3); + obptr += 2; + } + } + bptr += rowstride; + obuf += bpl; + } +} +#else +/* Render a 24-bit RGB image in buf into the GdkImage, without dithering. + This assumes native byte ordering - what should really be done is to + check whether static_image->byte_order is consistent with the _ENDIAN + config flag, and if not, use a different function. + + This routine is faster than the one included with Gtk 1.0 for a number + of reasons: + + 1. Shifting instead of lookup tables (less memory traffic). + + 2. Much less register pressure, especially because shifts are + in the code. + + 3. A memcpy is avoided (i.e. the transfer function). + + 4. On big-endian architectures, byte swapping is avoided. + + That said, it wouldn't be hard to make it even faster - just make an + inner loop that reads 3 words (i.e. 4 24-bit pixels), does a lot of + shifting and masking, then writes 2 words. +*/ +static void +xlib_rgb_convert_565 (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, XlibRgbCmap *cmap) +{ + int x, y; + unsigned char *obuf; + int bpl; + unsigned char *bptr, *bp2; + unsigned char r, g, b; + + bptr = buf; + bpl = image->bytes_per_line; + obuf = ((unsigned char *)image->data) + ay * bpl + ax * 2; + for (y = 0; y < height; y++) + { + bp2 = bptr; + for (x = 0; x < width; x++) + { + r = *bp2++; + g = *bp2++; + b = *bp2++; + ((unsigned short *)obuf)[x] = ((r & 0xf8) << 8) | + ((g & 0xfc) << 3) | + (b >> 3); + } + bptr += rowstride; + obuf += bpl; + } +} +#endif + +#ifdef HAIRY_CONVERT_565 +static void +xlib_rgb_convert_565_gray (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, XlibRgbCmap *cmap) +{ + int x, y; + unsigned char *obuf, *obptr; + int bpl; + unsigned char *bptr, *bp2; + unsigned char g; + + bptr = buf; + bpl = image->bytes_per_line; + obuf = ((unsigned char *)image->data) + ay * bpl + ax * 2; + for (y = 0; y < height; y++) + { + bp2 = bptr; + obptr = obuf; + if (((unsigned long)obuf | (unsigned long) bp2) & 3) + { + for (x = 0; x < width; x++) + { + g = *bp2++; + ((unsigned short *)obptr)[0] = ((g & 0xf8) << 8) | + ((g & 0xfc) << 3) | + (g >> 3); + obptr += 2; + } + } + else + { + for (x = 0; x < width - 3; x += 4) + { + unsigned int g3g2g1g0; + + g3g2g1g0 = ((unsigned int *)bp2)[0]; + ((unsigned int *)obptr)[0] = + ((g3g2g1g0 & 0xf8) << 8) | + ((g3g2g1g0 & 0xfc) << 3) | + ((g3g2g1g0 & 0xf8) >> 3) | + (g3g2g1g0 & 0xf800) << 16 | + ((g3g2g1g0 & 0xfc00) << 11) | + ((g3g2g1g0 & 0xf800) << 5); + ((unsigned int *)obptr)[1] = + ((g3g2g1g0 & 0xf80000) >> 8) | + ((g3g2g1g0 & 0xfc0000) >> 13) | + ((g3g2g1g0 & 0xf80000) >> 19) | + (g3g2g1g0 & 0xf8000000) | + ((g3g2g1g0 & 0xfc000000) >> 5) | + ((g3g2g1g0 & 0xf8000000) >> 11); + bp2 += 4; + obptr += 8; + } + for (; x < width; x++) + { + g = *bp2++; + ((unsigned short *)obptr)[0] = ((g & 0xf8) << 8) | + ((g & 0xfc) << 3) | + (g >> 3); + obptr += 2; + } + } + bptr += rowstride; + obuf += bpl; + } +} +#else +static void +xlib_rgb_convert_565_gray (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, XlibRgbCmap *cmap) +{ + int x, y; + unsigned char *obuf; + int bpl; + unsigned char *bptr, *bp2; + unsigned char g; + + bptr = buf; + bpl = image->bytes_per_line; + obuf = ((unsigned char *)image->data) + ay * bpl + ax * 2; + for (y = 0; y < height; y++) + { + bp2 = bptr; + for (x = 0; x < width; x++) + { + g = *bp2++; + ((unsigned short *)obuf)[x] = ((g & 0xf8) << 8) | + ((g & 0xfc) << 3) | + (g >> 3); + } + bptr += rowstride; + obuf += bpl; + } +} +#endif + +static void +xlib_rgb_convert_565_br (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, XlibRgbCmap *cmap) +{ + int x, y; + unsigned char *obuf; + int bpl; + unsigned char *bptr, *bp2; + unsigned char r, g, b; + + bptr = buf; + bpl = image->bytes_per_line; + obuf = ((unsigned char *)image->data) + ay * bpl + ax * 2; + for (y = 0; y < height; y++) + { + bp2 = bptr; + for (x = 0; x < width; x++) + { + r = *bp2++; + g = *bp2++; + b = *bp2++; + /* final word is: + g4 g3 g2 b7 b6 b5 b4 b3 r7 r6 r5 r4 r3 g7 g6 g5 + */ + ((unsigned short *)obuf)[x] = (r & 0xf8) | + ((g & 0xe0) >> 5) | + ((g & 0x1c) << 11) | + ((b & 0xf8) << 5); + } + bptr += rowstride; + obuf += bpl; + } +} + +/* Thanks to Ray Lehtiniemi for a patch that resulted in a ~25% speedup + in this mode. */ +#ifdef HAIRY_CONVERT_565 +static void +xlib_rgb_convert_565_d (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, XlibRgbCmap *cmap) +{ + /* Now this is what I'd call some highly tuned code! */ + int x, y; + unsigned char *obuf, *obptr; + int bpl; + unsigned char *bptr, *bp2; + + width += x_align; + height += y_align; + + bptr = buf; + bpl = image->bytes_per_line; + obuf = ((unsigned char *)image->data) + ay * bpl + ax * 2; + for (y = y_align; y < height; y++) + { + unsigned int *dmp = DM_565 + ((y & (DM_HEIGHT - 1)) << DM_WIDTH_SHIFT); + bp2 = bptr; + obptr = obuf; + if (((unsigned long)obuf | (unsigned long) bp2) & 3) + { + for (x = x_align; x < width; x++) + { + int rgb = *bp2++ << 20; + rgb += *bp2++ << 10; + rgb += *bp2++; + rgb += dmp[x & (DM_WIDTH - 1)]; + rgb += 0x10040100 + - ((rgb & 0x1e0001e0) >> 5) + - ((rgb & 0x00070000) >> 6); + + ((unsigned short *)obptr)[0] = + ((rgb & 0x0f800000) >> 12) | + ((rgb & 0x0003f000) >> 7) | + ((rgb & 0x000000f8) >> 3); + obptr += 2; + } + } + else + { + for (x = x_align; x < width - 3; x += 4) + { + unsigned int r1b0g0r0; + unsigned int g2r2b1g1; + unsigned int b3g3r3b2; + unsigned int rgb02, rgb13; + + r1b0g0r0 = ((unsigned int *)bp2)[0]; + g2r2b1g1 = ((unsigned int *)bp2)[1]; + b3g3r3b2 = ((unsigned int *)bp2)[2]; + rgb02 = + ((r1b0g0r0 & 0xff) << 20) + + ((r1b0g0r0 & 0xff00) << 2) + + ((r1b0g0r0 & 0xff0000) >> 16) + + dmp[x & (DM_WIDTH - 1)]; + rgb02 += 0x10040100 + - ((rgb02 & 0x1e0001e0) >> 5) + - ((rgb02 & 0x00070000) >> 6); + rgb13 = + ((r1b0g0r0 & 0xff000000) >> 4) + + ((g2r2b1g1 & 0xff) << 10) + + ((g2r2b1g1 & 0xff00) >> 8) + + dmp[(x + 1) & (DM_WIDTH - 1)]; + rgb13 += 0x10040100 + - ((rgb13 & 0x1e0001e0) >> 5) + - ((rgb13 & 0x00070000) >> 6); + ((unsigned int *)obptr)[0] = + ((rgb02 & 0x0f800000) >> 12) | + ((rgb02 & 0x0003f000) >> 7) | + ((rgb02 & 0x000000f8) >> 3) | + ((rgb13 & 0x0f800000) << 4) | + ((rgb13 & 0x0003f000) << 9) | + ((rgb13 & 0x000000f8) << 13); + rgb02 = + ((g2r2b1g1 & 0xff0000) << 4) + + ((g2r2b1g1 & 0xff000000) >> 14) + + (b3g3r3b2 & 0xff) + + dmp[(x + 2) & (DM_WIDTH - 1)]; + rgb02 += 0x10040100 + - ((rgb02 & 0x1e0001e0) >> 5) + - ((rgb02 & 0x00070000) >> 6); + rgb13 = + ((b3g3r3b2 & 0xff00) << 12) + + ((b3g3r3b2 & 0xff0000) >> 6) + + ((b3g3r3b2 & 0xff000000) >> 24) + + dmp[(x + 3) & (DM_WIDTH - 1)]; + rgb13 += 0x10040100 + - ((rgb13 & 0x1e0001e0) >> 5) + - ((rgb13 & 0x00070000) >> 6); + ((unsigned int *)obptr)[1] = + ((rgb02 & 0x0f800000) >> 12) | + ((rgb02 & 0x0003f000) >> 7) | + ((rgb02 & 0x000000f8) >> 3) | + ((rgb13 & 0x0f800000) << 4) | + ((rgb13 & 0x0003f000) << 9) | + ((rgb13 & 0x000000f8) << 13); + bp2 += 12; + obptr += 8; + } + for (; x < width; x++) + { + int rgb = *bp2++ << 20; + rgb += *bp2++ << 10; + rgb += *bp2++; + rgb += dmp[x & (DM_WIDTH - 1)]; + rgb += 0x10040100 + - ((rgb & 0x1e0001e0) >> 5) + - ((rgb & 0x00070000) >> 6); + + ((unsigned short *)obptr)[0] = + ((rgb & 0x0f800000) >> 12) | + ((rgb & 0x0003f000) >> 7) | + ((rgb & 0x000000f8) >> 3); + obptr += 2; + } + } + bptr += rowstride; + obuf += bpl; + } +} +#else +static void +xlib_rgb_convert_565_d (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, XlibRgbCmap *cmap) +{ + int x, y; + unsigned char *obuf; + int bpl; + unsigned char *bptr; + + width += x_align; + height += y_align; + + bptr = buf; + bpl = image->bytes_per_line; + obuf = ((unsigned char *)image->data) + ay * bpl + (ax - x_align) * 2; + + for (y = y_align; y < height; y++) + { + unsigned int *dmp = DM_565 + ((y & (DM_HEIGHT - 1)) << DM_WIDTH_SHIFT); + unsigned char *bp2 = bptr; + + for (x = x_align; x < width; x++) + { + int rgb = *bp2++ << 20; + rgb += *bp2++ << 10; + rgb += *bp2++; + rgb += dmp[x & (DM_WIDTH - 1)]; + rgb += 0x10040100 + - ((rgb & 0x1e0001e0) >> 5) + - ((rgb & 0x00070000) >> 6); + + ((unsigned short *)obuf)[x] = + ((rgb & 0x0f800000) >> 12) | + ((rgb & 0x0003f000) >> 7) | + ((rgb & 0x000000f8) >> 3); + } + + bptr += rowstride; + obuf += bpl; + } +} +#endif + +static void +xlib_rgb_convert_555 (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, XlibRgbCmap *cmap) +{ + int x, y; + unsigned char *obuf; + int bpl; + unsigned char *bptr, *bp2; + unsigned char r, g, b; + + bptr = buf; + bpl = image->bytes_per_line; + obuf = ((unsigned char *)image->data) + ay * bpl + ax * 2; + for (y = 0; y < height; y++) + { + bp2 = bptr; + for (x = 0; x < width; x++) + { + r = *bp2++; + g = *bp2++; + b = *bp2++; + ((unsigned short *)obuf)[x] = ((r & 0xf8) << 7) | + ((g & 0xf8) << 2) | + (b >> 3); + } + bptr += rowstride; + obuf += bpl; + } +} + +static void +xlib_rgb_convert_555_br (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, XlibRgbCmap *cmap) +{ + int x, y; + unsigned char *obuf; + int bpl; + unsigned char *bptr, *bp2; + unsigned char r, g, b; + + bptr = buf; + bpl = image->bytes_per_line; + obuf = ((unsigned char *)image->data) + ay * bpl + ax * 2; + for (y = 0; y < height; y++) + { + bp2 = bptr; + for (x = 0; x < width; x++) + { + r = *bp2++; + g = *bp2++; + b = *bp2++; + /* final word is: + g5 g4 g3 b7 b6 b5 b4 b3 0 r7 r6 r5 r4 r3 g7 g6 + */ + ((unsigned short *)obuf)[x] = ((r & 0xf8) >> 1) | + ((g & 0xc0) >> 6) | + ((g & 0x18) << 10) | + ((b & 0xf8) << 5); + } + bptr += rowstride; + obuf += bpl; + } +} + +static void +xlib_rgb_convert_888_msb (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, XlibRgbCmap *cmap) +{ + int y; + unsigned char *obuf; + int bpl; + unsigned char *bptr; + + bptr = buf; + bpl = image->bytes_per_line; + obuf = ((unsigned char *)image->data) + ay * bpl + ax * 3; + for (y = 0; y < height; y++) + { + memcpy (obuf, bptr, (unsigned int)(width + width + width)); + bptr += rowstride; + obuf += bpl; + } +} + +/* todo: optimize this */ +#if KSVG_BYTE_ORDER == KSVG_LITTLE_ENDIAN +#define HAIRY_CONVERT_888 +#endif + +#ifdef HAIRY_CONVERT_888 +static void +xlib_rgb_convert_888_lsb (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, XlibRgbCmap *cmap) +{ + int x, y; + unsigned char *obuf, *obptr; + int bpl; + unsigned char *bptr, *bp2; + int r, g, b; + + bptr = buf; + bpl = image->bytes_per_line; + obuf = ((unsigned char *)image->data) + ay * bpl + ax * 3; + for (y = 0; y < height; y++) + { + bp2 = bptr; + obptr = obuf; + if (((unsigned long)obuf | (unsigned long) bp2) & 3) + { + for (x = 0; x < width; x++) + { + r = bp2[0]; + g = bp2[1]; + b = bp2[2]; + *obptr++ = b; + *obptr++ = g; + *obptr++ = r; + bp2 += 3; + } + } + else + { + for (x = 0; x < width - 3; x += 4) + { + unsigned int r1b0g0r0; + unsigned int g2r2b1g1; + unsigned int b3g3r3b2; + + r1b0g0r0 = ((unsigned int *)bp2)[0]; + g2r2b1g1 = ((unsigned int *)bp2)[1]; + b3g3r3b2 = ((unsigned int *)bp2)[2]; + ((unsigned int *)obptr)[0] = + (r1b0g0r0 & 0xff00) | + ((r1b0g0r0 & 0xff0000) >> 16) | + (((g2r2b1g1 & 0xff00) | (r1b0g0r0 & 0xff)) << 16); + ((unsigned int *)obptr)[1] = + (g2r2b1g1 & 0xff0000ff) | + ((r1b0g0r0 & 0xff000000) >> 16) | + ((b3g3r3b2 & 0xff) << 16); + ((unsigned int *)obptr)[2] = + (((g2r2b1g1 & 0xff0000) | (b3g3r3b2 & 0xff000000)) >> 16) | + ((b3g3r3b2 & 0xff00) << 16) | + ((b3g3r3b2 & 0xff0000)); + bp2 += 12; + obptr += 12; + } + for (; x < width; x++) + { + r = bp2[0]; + g = bp2[1]; + b = bp2[2]; + *obptr++ = b; + *obptr++ = g; + *obptr++ = r; + bp2 += 3; + } + } + bptr += rowstride; + obuf += bpl; + } +} +#else +static void +xlib_rgb_convert_888_lsb (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, XlibRgbCmap *cmap) +{ + int x, y; + unsigned char *obuf; + int bpl; + unsigned char *bptr, *bp2; + int r, g, b; + + bptr = buf; + bpl = image->bytes_per_line; + obuf = ((unsigned char *)image->data) + ay * bpl + ax * 3; + for (y = 0; y < height; y++) + { + bp2 = bptr; + for (x = 0; x < width; x++) + { + r = bp2[0]; + g = bp2[1]; + b = bp2[2]; + obuf[x * 3] = b; + obuf[x * 3 + 1] = g; + obuf[x * 3 + 2] = r; + bp2 += 3; + } + bptr += rowstride; + obuf += bpl; + } +} +#endif + +/* convert 24-bit packed to 32-bit unpacked */ +/* todo: optimize this */ +static void +xlib_rgb_convert_0888 (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, XlibRgbCmap *cmap) +{ + int x, y; + unsigned char *obuf; + int bpl; + unsigned char *bptr, *bp2; + int r, g, b; + + bptr = buf; + bpl = image->bytes_per_line; + obuf = ((unsigned char *)image->data) + ay * bpl + ax * 4; + for (y = 0; y < height; y++) + { + bp2 = bptr; + for (x = 0; x < width; x++) + { + r = bp2[0]; + g = bp2[1]; + b = bp2[2]; + ((unsigned int *)obuf)[x] = (r << 16) | (g << 8) | b; + bp2 += 3; + } + bptr += rowstride; + obuf += bpl; + } +} + +static void +xlib_rgb_convert_0888_br (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, XlibRgbCmap *cmap) +{ + int x, y; + unsigned char *obuf; + int bpl; + unsigned char *bptr, *bp2; + int r, g, b; + + bptr = buf; + bpl = image->bytes_per_line; + obuf = ((unsigned char *)image->data) + ay * bpl + ax * 4; + for (y = 0; y < height; y++) + { + bp2 = bptr; + for (x = 0; x < width; x++) + { + r = bp2[0]; + g = bp2[1]; + b = bp2[2]; + ((unsigned int *)obuf)[x] = (b << 24) | (g << 16) | (r << 8); + bp2 += 3; + } + bptr += rowstride; + obuf += bpl; + } +} + +static void +xlib_rgb_convert_8880_br (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, XlibRgbCmap *cmap) +{ + int x, y; + unsigned char *obuf; + int bpl; + unsigned char *bptr, *bp2; + int r, g, b; + + bptr = buf; + bpl = image->bytes_per_line; + obuf = ((unsigned char *)image->data) + ay * bpl + ax * 4; + for (y = 0; y < height; y++) + { + bp2 = bptr; + for (x = 0; x < width; x++) + { + r = bp2[0]; + g = bp2[1]; + b = bp2[2]; + ((unsigned int *)obuf)[x] = (b << 16) | (g << 8) | r; + bp2 += 3; + } + bptr += rowstride; + obuf += bpl; + } +} + +/* Generic truecolor/directcolor conversion function. Slow, but these + are oddball modes. */ +static void +xlib_rgb_convert_truecolor_lsb (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, + XlibRgbCmap *cmap) +{ + int x, y; + unsigned char *obuf, *obptr; + int bpl; + unsigned char *bptr, *bp2; + int r, g, b; + int r_right, r_left; + int g_right, g_left; + int b_right, b_left; + int bpp; + unsigned int pixel; + int i; + + r_right = 8 - image_info->red_prec; + r_left = image_info->red_shift; + g_right = 8 - image_info->green_prec; + g_left = image_info->green_shift; + b_right = 8 - image_info->blue_prec; + b_left = image_info->blue_shift; + bpp = image_info->bpp; + bptr = buf; + bpl = image->bytes_per_line; + obuf = ((unsigned char *)image->data) + ay * bpl + ax * bpp; + for (y = 0; y < height; y++) + { + obptr = obuf; + bp2 = bptr; + for (x = 0; x < width; x++) + { + r = bp2[0]; + g = bp2[1]; + b = bp2[2]; + pixel = ((r >> r_right) << r_left) | + ((g >> g_right) << g_left) | + ((b >> b_right) << b_left); + for (i = 0; i < bpp; i++) + { + *obptr++ = pixel & 0xff; + pixel >>= 8; + } + bp2 += 3; + } + bptr += rowstride; + obuf += bpl; + } +} + +static void +xlib_rgb_convert_truecolor_lsb_d (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, + XlibRgbCmap *cmap) +{ + int x, y; + unsigned char *obuf, *obptr; + int bpl; + unsigned char *bptr, *bp2; + int r, g, b; + int r_right, r_left, r_prec; + int g_right, g_left, g_prec; + int b_right, b_left, b_prec; + int bpp; + unsigned int pixel; + int i; + int dith; + int r1, g1, b1; + const unsigned char *dmp; + + r_right = 8 - image_info->red_prec; + r_left = image_info->red_shift; + r_prec = image_info->red_prec; + g_right = 8 - image_info->green_prec; + g_left = image_info->green_shift; + g_prec = image_info->green_prec; + b_right = 8 - image_info->blue_prec; + b_left = image_info->blue_shift; + b_prec = image_info->blue_prec; + bpp = image_info->bpp; + bptr = buf; + bpl = image->bytes_per_line; + obuf = ((unsigned char *)image->data) + ay * bpl + ax * bpp; + for (y = 0; y < height; y++) + { + dmp = DM[(y_align + y) & (DM_HEIGHT - 1)]; + obptr = obuf; + bp2 = bptr; + for (x = 0; x < width; x++) + { + r = bp2[0]; + g = bp2[1]; + b = bp2[2]; + dith = dmp[(x_align + x) & (DM_WIDTH - 1)] << 2; + r1 = r + (dith >> r_prec); + g1 = g + ((252 - dith) >> g_prec); + b1 = b + (dith >> b_prec); + pixel = (((r1 - (r1 >> r_prec)) >> r_right) << r_left) | + (((g1 - (g1 >> g_prec)) >> g_right) << g_left) | + (((b1 - (b1 >> b_prec)) >> b_right) << b_left); + for (i = 0; i < bpp; i++) + { + *obptr++ = pixel & 0xff; + pixel >>= 8; + } + bp2 += 3; + } + bptr += rowstride; + obuf += bpl; + } +} + +static void +xlib_rgb_convert_truecolor_msb (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, + XlibRgbCmap *cmap) +{ + int x, y; + unsigned char *obuf, *obptr; + int bpl; + unsigned char *bptr, *bp2; + int r, g, b; + int r_right, r_left; + int g_right, g_left; + int b_right, b_left; + int bpp; + unsigned int pixel; + int shift, shift_init; + + r_right = 8 - image_info->red_prec; + r_left = image_info->red_shift; + g_right = 8 - image_info->green_prec; + g_left = image_info->green_shift; + b_right = 8 - image_info->blue_prec; + b_left = image_info->blue_shift; + bpp = image_info->bpp; + bptr = buf; + bpl = image->bytes_per_line; + obuf = ((unsigned char *)image->data) + ay * bpl + ax * bpp; + shift_init = (bpp - 1) << 3; + for (y = 0; y < height; y++) + { + obptr = obuf; + bp2 = bptr; + for (x = 0; x < width; x++) + { + r = bp2[0]; + g = bp2[1]; + b = bp2[2]; + pixel = ((r >> r_right) << r_left) | + ((g >> g_right) << g_left) | + ((b >> b_right) << b_left); + for (shift = shift_init; shift >= 0; shift -= 8) + { + *obptr++ = (pixel >> shift) & 0xff; + } + bp2 += 3; + } + bptr += rowstride; + obuf += bpl; + } +} + +static void +xlib_rgb_convert_truecolor_msb_d (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, + XlibRgbCmap *cmap) +{ + int x, y; + unsigned char *obuf, *obptr; + int bpl; + unsigned char *bptr, *bp2; + int r, g, b; + int r_right, r_left, r_prec; + int g_right, g_left, g_prec; + int b_right, b_left, b_prec; + int bpp; + unsigned int pixel; + int shift, shift_init; + int dith; + int r1, g1, b1; + const unsigned char *dmp; + + r_right = 8 - image_info->red_prec; + r_left = image_info->red_shift; + r_prec = image_info->red_prec; + g_right = 8 - image_info->green_prec; + g_left = image_info->green_shift; + g_prec = image_info->green_prec; + b_right = 8 - image_info->blue_prec; + b_left = image_info->blue_shift; + b_prec = image_info->blue_prec; + bpp = image_info->bpp; + bptr = buf; + bpl = image->bytes_per_line; + obuf = ((unsigned char *)image->data) + ay * bpl + ax * bpp; + shift_init = (bpp - 1) << 3; + for (y = 0; y < height; y++) + { + dmp = DM[(y_align + y) & (DM_HEIGHT - 1)]; + obptr = obuf; + bp2 = bptr; + for (x = 0; x < width; x++) + { + r = bp2[0]; + g = bp2[1]; + b = bp2[2]; + dith = dmp[(x_align + x) & (DM_WIDTH - 1)] << 2; + r1 = r + (dith >> r_prec); + g1 = g + ((252 - dith) >> g_prec); + b1 = b + (dith >> b_prec); + pixel = (((r1 - (r1 >> r_prec)) >> r_right) << r_left) | + (((g1 - (g1 >> g_prec)) >> g_right) << g_left) | + (((b1 - (b1 >> b_prec)) >> b_right) << b_left); + for (shift = shift_init; shift >= 0; shift -= 8) + { + *obptr++ = (pixel >> shift) & 0xff; + } + bp2 += 3; + } + bptr += rowstride; + obuf += bpl; + } +} + +/* This actually works for depths from 3 to 7 */ +static void +xlib_rgb_convert_4 (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, + XlibRgbCmap *cmap) +{ + int x, y; + int bpl; + unsigned char *obuf, *obptr; + unsigned char *bptr, *bp2; + int r, g, b; + const unsigned char *dmp; + int dith; + + bptr = buf; + bpl = image->bytes_per_line; + obuf = ((unsigned char *)image->data) + ay * bpl + ax; + for (y = 0; y < height; y++) + { + dmp = DM[(y_align + y) & (DM_HEIGHT - 1)]; + bp2 = bptr; + obptr = obuf; + for (x = 0; x < width; x += 1) + { + r = *bp2++; + g = *bp2++; + b = *bp2++; + dith = (dmp[(x_align + x) & (DM_WIDTH - 1)] << 2) | 3; + obptr[0] = colorcube_d[(((r + dith) & 0x100) >> 2) | + (((g + 258 - dith) & 0x100) >> 5) | + (((b + dith) & 0x100) >> 8)]; + obptr++; + } + bptr += rowstride; + obuf += bpl; + } +} + +/* This actually works for depths from 3 to 7 */ +static void +xlib_rgb_convert_gray4 (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, XlibRgbCmap *cmap) +{ + int x, y; + int bpl; + unsigned char *obuf, *obptr; + unsigned char *bptr, *bp2; + int r, g, b; + int shift; + + bptr = buf; + bpl = image->bytes_per_line; + obuf = ((unsigned char *)image->data) + ay * bpl + ax; + shift = 9 - image_info->x_visual_info->depth; + for (y = 0; y < height; y++) + { + bp2 = bptr; + obptr = obuf; + for (x = 0; x < width; x++) + { + r = *bp2++; + g = *bp2++; + b = *bp2++; + obptr[0] = (g + ((b + r) >> 1)) >> shift; + obptr++; + } + bptr += rowstride; + obuf += bpl; + } +} + +static void +xlib_rgb_convert_gray4_pack (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, XlibRgbCmap *cmap) +{ + int x, y; + int bpl; + unsigned char *obuf, *obptr; + unsigned char *bptr, *bp2; + int r, g, b; + int shift; + unsigned char pix0, pix1; + /* todo: this is hardcoded to big-endian. Make endian-agile. */ + + bptr = buf; + bpl = image->bytes_per_line; + obuf = ((unsigned char *)image->data) + ay * bpl + (ax >> 1); + shift = 9 - image_info->x_visual_info->depth; + for (y = 0; y < height; y++) + { + bp2 = bptr; + obptr = obuf; + for (x = 0; x < width; x += 2) + { + r = *bp2++; + g = *bp2++; + b = *bp2++; + pix0 = (g + ((b + r) >> 1)) >> shift; + r = *bp2++; + g = *bp2++; + b = *bp2++; + pix1 = (g + ((b + r) >> 1)) >> shift; + obptr[0] = (pix0 << 4) | pix1; + obptr++; + } + if (width & 1) + { + r = *bp2++; + g = *bp2++; + b = *bp2++; + pix0 = (g + ((b + r) >> 1)) >> shift; + obptr[0] = (pix0 << 4); + } + bptr += rowstride; + obuf += bpl; + } +} + +/* This actually works for depths from 3 to 7 */ +static void +xlib_rgb_convert_gray4_d (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, XlibRgbCmap *cmap) +{ + int x, y; + int bpl; + unsigned char *obuf, *obptr; + unsigned char *bptr, *bp2; + int r, g, b; + const unsigned char *dmp; + int prec, right; + int gray; + + bptr = buf; + bpl = image->bytes_per_line; + obuf = ((unsigned char *)image->data) + ay * bpl + ax; + prec = image_info->x_visual_info->depth; + right = 8 - prec; + for (y = 0; y < height; y++) + { + bp2 = bptr; + obptr = obuf; + dmp = DM[(y_align + y) & (DM_HEIGHT - 1)]; + for (x = 0; x < width; x++) + { + r = *bp2++; + g = *bp2++; + b = *bp2++; + gray = (g + ((b + r) >> 1)) >> 1; + gray += (dmp[(x_align + x) & (DM_WIDTH - 1)] << 2) >> prec; + obptr[0] = (gray - (gray >> prec)) >> right; + obptr++; + } + bptr += rowstride; + obuf += bpl; + } +} + +static void +xlib_rgb_convert_gray4_d_pack (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, XlibRgbCmap *cmap) +{ + int x, y; + int bpl; + unsigned char *obuf, *obptr; + unsigned char *bptr, *bp2; + int r, g, b; + const unsigned char *dmp; + int prec, right; + int gray; + unsigned char pix0, pix1; + /* todo: this is hardcoded to big-endian. Make endian-agile. */ + + bptr = buf; + bpl = image->bytes_per_line; + obuf = ((unsigned char *)image->data) + ay * bpl + (ax >> 1); + prec = image_info->x_visual_info->depth; + right = 8 - prec; + for (y = 0; y < height; y++) + { + bp2 = bptr; + obptr = obuf; + dmp = DM[(y_align + y) & (DM_HEIGHT - 1)]; + for (x = 0; x < width; x += 2) + { + r = *bp2++; + g = *bp2++; + b = *bp2++; + gray = (g + ((b + r) >> 1)) >> 1; + gray += (dmp[(x_align + x) & (DM_WIDTH - 1)] << 2) >> prec; + pix0 = (gray - (gray >> prec)) >> right; + r = *bp2++; + g = *bp2++; + b = *bp2++; + gray = (g + ((b + r) >> 1)) >> 1; + gray += (dmp[(x_align + x + 1) & (DM_WIDTH - 1)] << 2) >> prec; + pix1 = (gray - (gray >> prec)) >> right; + obptr[0] = (pix0 << 4) | pix1; + obptr++; + } + if (width & 1) + { + r = *bp2++; + g = *bp2++; + b = *bp2++; + gray = (g + ((b + r) >> 1)) >> 1; + gray += (dmp[(x_align + x + 1) & (DM_WIDTH - 1)] << 2) >> prec; + pix0 = (gray - (gray >> prec)) >> right; + obptr[0] = (pix0 << 4); + } + bptr += rowstride; + obuf += bpl; + } +} + +static void +xlib_rgb_convert_1 (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, + XlibRgbCmap *cmap) +{ + int x, y; + int bpl; + unsigned char *obuf, *obptr; + unsigned char *bptr, *bp2; + int r, g, b; + const unsigned char *dmp; + int dith; + unsigned char byte; + + bptr = buf; + bpl = image->bytes_per_line; + obuf = ((unsigned char *)image->data) + ay * bpl + (ax >> 3); + byte = 0; /* unnecessary, but it keeps gcc from complaining */ + for (y = 0; y < height; y++) + { + dmp = DM[(y_align + y) & (DM_HEIGHT - 1)]; + bp2 = bptr; + obptr = obuf; + for (x = 0; x < width; x++) + { + r = *bp2++; + g = *bp2++; + b = *bp2++; + dith = (dmp[(x_align + x) & (DM_WIDTH - 1)] << 4) | 4; + byte += byte + (r + g + g + b + dith > 1020); + if ((x & 7) == 7) + { + obptr[0] = byte; + obptr++; + } + } + if (x & 7) + obptr[0] = byte << (8 - (x & 7)); + bptr += rowstride; + obuf += bpl; + } +} + +/* Returns a pointer to the stage buffer. */ +static unsigned char * +xlib_rgb_ensure_stage (void) +{ + if (image_info->stage_buf == NULL) + image_info->stage_buf = malloc (IMAGE_HEIGHT * STAGE_ROWSTRIDE); + return image_info->stage_buf; +} + +/* This is slow. Speed me up, please. */ +static void +xlib_rgb_32_to_stage (unsigned char *buf, int rowstride, int width, int height) +{ + int x, y; + unsigned char *pi_start, *po_start; + unsigned char *pi, *po; + + pi_start = buf; + po_start = xlib_rgb_ensure_stage (); + for (y = 0; y < height; y++) + { + pi = pi_start; + po = po_start; + for (x = 0; x < width; x++) + { + *po++ = *pi++; + *po++ = *pi++; + *po++ = *pi++; + pi++; + } + pi_start += rowstride; + po_start += STAGE_ROWSTRIDE; + } +} + +/* Generic 32bit RGB conversion function - convert to 24bit packed, then + go from there. */ +static void +xlib_rgb_convert_32_generic (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, XlibRgbCmap *cmap) +{ + xlib_rgb_32_to_stage (buf, rowstride, width, height); + + (*image_info->conv) (image, ax, ay, width, height, + image_info->stage_buf, STAGE_ROWSTRIDE, + x_align, y_align, cmap); +} + +/* Generic 32bit RGB conversion function - convert to 24bit packed, then + go from there. */ +static void +xlib_rgb_convert_32_generic_d (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, XlibRgbCmap *cmap) +{ + xlib_rgb_32_to_stage (buf, rowstride, width, height); + + (*image_info->conv_d) (image, ax, ay, width, height, + image_info->stage_buf, STAGE_ROWSTRIDE, + x_align, y_align, cmap); +} + +/* This is slow. Speed me up, please. */ +static void +xlib_rgb_gray_to_stage (unsigned char *buf, int rowstride, int width, int height) +{ + int x, y; + unsigned char *pi_start, *po_start; + unsigned char *pi, *po; + unsigned char gray; + + pi_start = buf; + po_start = xlib_rgb_ensure_stage (); + for (y = 0; y < height; y++) + { + pi = pi_start; + po = po_start; + for (x = 0; x < width; x++) + { + gray = *pi++; + *po++ = gray; + *po++ = gray; + *po++ = gray; + } + pi_start += rowstride; + po_start += STAGE_ROWSTRIDE; + } +} + +/* Generic gray conversion function - convert to 24bit packed, then go + from there. */ +static void +xlib_rgb_convert_gray_generic (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, XlibRgbCmap *cmap) +{ + xlib_rgb_gray_to_stage (buf, rowstride, width, height); + + (*image_info->conv) (image, ax, ay, width, height, + image_info->stage_buf, STAGE_ROWSTRIDE, + x_align, y_align, cmap); +} + +static void +xlib_rgb_convert_gray_generic_d (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, XlibRgbCmap *cmap) +{ + xlib_rgb_gray_to_stage (buf, rowstride, width, height); + + (*image_info->conv_d) (image, ax, ay, width, height, + image_info->stage_buf, STAGE_ROWSTRIDE, + x_align, y_align, cmap); +} + +/* Render grayscale using indexed method. */ +static void +xlib_rgb_convert_gray_cmap (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, XlibRgbCmap *cmap) +{ + (*image_info->conv_indexed) (image, ax, ay, width, height, + buf, rowstride, + x_align, y_align, image_info->gray_cmap); +} + +#if 0 +static void +xlib_rgb_convert_gray_cmap_d (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, XlibRgbCmap *cmap) +{ + (*image_info->conv_indexed_d) (image, ax, ay, width, height, + buf, rowstride, + x_align, y_align, image_info->gray_cmap); +} +#endif + +/* This is slow. Speed me up, please. */ +static void +xlib_rgb_indexed_to_stage (unsigned char *buf, int rowstride, int width, int height, + XlibRgbCmap *cmap) +{ + int x, y; + unsigned char *pi_start, *po_start; + unsigned char *pi, *po; + int rgb; + + pi_start = buf; + po_start = xlib_rgb_ensure_stage (); + for (y = 0; y < height; y++) + { + pi = pi_start; + po = po_start; + for (x = 0; x < width; x++) + { + rgb = cmap->colors[*pi++]; + *po++ = rgb >> 16; + *po++ = (rgb >> 8) & 0xff; + *po++ = rgb & 0xff; + } + pi_start += rowstride; + po_start += STAGE_ROWSTRIDE; + } +} + +/* Generic gray conversion function - convert to 24bit packed, then go + from there. */ +static void +xlib_rgb_convert_indexed_generic (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, XlibRgbCmap *cmap) +{ + xlib_rgb_indexed_to_stage (buf, rowstride, width, height, cmap); + + (*image_info->conv) (image, ax, ay, width, height, + image_info->stage_buf, STAGE_ROWSTRIDE, + x_align, y_align, cmap); +} + +static void +xlib_rgb_convert_indexed_generic_d (XImage *image, + int ax, int ay, int width, int height, + unsigned char *buf, int rowstride, + int x_align, int y_align, + XlibRgbCmap *cmap) +{ + xlib_rgb_indexed_to_stage (buf, rowstride, width, height, cmap); + + (*image_info->conv_d) (image, ax, ay, width, height, + image_info->stage_buf, STAGE_ROWSTRIDE, + x_align, y_align, cmap); +} + +/* Select a conversion function based on the visual and a + representative image. */ +static void +xlib_rgb_select_conv (XImage *image, ByteOrder byte_order) +{ + int depth, byterev; + int vtype; /* visual type */ + int bpp; /* bits per pixel - from the visual */ + unsigned int red_mask, green_mask, blue_mask; + XlibRgbConvFunc conv, conv_d; + XlibRgbConvFunc conv_32, conv_32_d; + XlibRgbConvFunc conv_gray, conv_gray_d; + XlibRgbConvFunc conv_indexed, conv_indexed_d; + Bool mask_rgb, mask_bgr; + + depth = image_info->x_visual_info->depth; + bpp = image->bits_per_pixel; + if (xlib_rgb_verbose) + printf ("Chose visual 0x%x, image bpp=%d, %s first\n", + (int)image_info->x_visual_info->visual->visualid, + bpp, byte_order == LSB_FIRST ? "lsb" : "msb"); + +#if KSVG_BYTE_ORDER == KSVG_BIG_ENDIAN + byterev = (byte_order == LSB_FIRST); +#else + byterev = (byte_order == MSB_FIRST); +#endif + + vtype = image_info->x_visual_info->class; + if (vtype == DirectColor) + vtype = TrueColor; + + red_mask = image_info->x_visual_info->red_mask; + green_mask = image_info->x_visual_info->green_mask; + blue_mask = image_info->x_visual_info->blue_mask; + + mask_rgb = red_mask == 0xff0000 && green_mask == 0xff00 && blue_mask == 0xff; + mask_bgr = red_mask == 0xff && green_mask == 0xff00 && blue_mask == 0xff0000; + + conv = NULL; + conv_d = NULL; + + conv_32 = xlib_rgb_convert_32_generic; + conv_32_d = xlib_rgb_convert_32_generic_d; + + conv_gray = xlib_rgb_convert_gray_generic; + conv_gray_d = xlib_rgb_convert_gray_generic_d; + + conv_indexed = xlib_rgb_convert_indexed_generic; + conv_indexed_d = xlib_rgb_convert_indexed_generic_d; + + image_info->dith_default = FALSE; + + if (image_info->bitmap) + conv = xlib_rgb_convert_1; + else if (bpp == 16 && depth == 16 && !byterev && + red_mask == 0xf800 && green_mask == 0x7e0 && blue_mask == 0x1f) + { + conv = xlib_rgb_convert_565; + conv_d = xlib_rgb_convert_565_d; + conv_gray = xlib_rgb_convert_565_gray; + xlib_rgb_preprocess_dm_565 (); + } + else if (bpp == 16 && depth == 16 && + vtype == TrueColor&& byterev && + red_mask == 0xf800 && green_mask == 0x7e0 && blue_mask == 0x1f) + conv = xlib_rgb_convert_565_br; + + else if (bpp == 16 && depth == 15 && + vtype == TrueColor && !byterev && + red_mask == 0x7c00 && green_mask == 0x3e0 && blue_mask == 0x1f) + conv = xlib_rgb_convert_555; + + else if (bpp == 16 && depth == 15 && + vtype == TrueColor && byterev && + red_mask == 0x7c00 && green_mask == 0x3e0 && blue_mask == 0x1f) + conv = xlib_rgb_convert_555_br; + + /* I'm not 100% sure about the 24bpp tests - but testing will show*/ + else if (bpp == 24 && depth == 24 && vtype == TrueColor && + ((mask_rgb && byte_order == LSB_FIRST) || + (mask_bgr && byte_order == MSB_FIRST))) + conv = xlib_rgb_convert_888_lsb; + else if (bpp == 24 && depth == 24 && vtype == TrueColor && + ((mask_rgb && byte_order == MSB_FIRST) || + (mask_bgr && byte_order == LSB_FIRST))) + conv = xlib_rgb_convert_888_msb; +#if KSVG_BYTE_ORDER == KSVG_BIG_ENDIAN + else if (bpp == 32 && depth == 24 && vtype == TrueColor && + (mask_rgb && byte_order == LSB_FIRST)) + conv = xlib_rgb_convert_0888_br; + else if (bpp == 32 && depth == 24 && vtype == TrueColor && + (mask_rgb && byte_order == MSB_FIRST)) + conv = xlib_rgb_convert_0888; + else if (bpp == 32 && depth == 24 && vtype == TrueColor && + (mask_bgr && byte_order == MSB_FIRST)) + conv = xlib_rgb_convert_8880_br; +#else + else if (bpp == 32 && depth == 24 && vtype == TrueColor && + (mask_rgb && byte_order == MSB_FIRST)) + conv = xlib_rgb_convert_0888_br; + else if (bpp == 32 && (depth == 32 || depth == 24) && vtype == TrueColor && + (mask_rgb && byte_order == LSB_FIRST)) + conv = xlib_rgb_convert_0888; + else if (bpp == 32 && depth == 24 && vtype == TrueColor && + (mask_bgr && byte_order == LSB_FIRST)) + conv = xlib_rgb_convert_8880_br; +#endif + + else if (vtype == TrueColor && byte_order == LSB_FIRST) + { + conv = xlib_rgb_convert_truecolor_lsb; + conv_d = xlib_rgb_convert_truecolor_lsb_d; + } + else if (vtype == TrueColor && byte_order == MSB_FIRST) + { + conv = xlib_rgb_convert_truecolor_msb; + conv_d = xlib_rgb_convert_truecolor_msb_d; + } + else if (bpp == 8 && depth == 8 && (vtype == PseudoColor +#ifdef ENABLE_GRAYSCALE + || vtype == GrayScale +#endif + )) + { + image_info->dith_default = TRUE; + conv = xlib_rgb_convert_8; + if (vtype != GrayScale) + { + if (image_info->nred_shades == 6 && + image_info->ngreen_shades == 6 && + image_info->nblue_shades == 6) + conv_d = xlib_rgb_convert_8_d666; + else + conv_d = xlib_rgb_convert_8_d; + } + conv_indexed = xlib_rgb_convert_8_indexed; + conv_gray = xlib_rgb_convert_gray_cmap; + } + else if (bpp == 8 && depth == 8 && (vtype == StaticGray +#ifdef not_ENABLE_GRAYSCALE + || vtype == GrayScale +#endif + )) + { + conv = xlib_rgb_convert_gray8; + conv_gray = xlib_rgb_convert_gray8_gray; + } + else if (bpp == 8 && depth < 8 && depth >= 2 && + (vtype == StaticGray + || vtype == GrayScale)) + { + conv = xlib_rgb_convert_gray4; + conv_d = xlib_rgb_convert_gray4_d; + } + else if (bpp == 8 && depth < 8 && depth >= 3) + { + conv = xlib_rgb_convert_4; + } + else if (bpp == 4 && depth <= 4 && depth >= 2 && + (vtype == StaticGray + || vtype == GrayScale)) + { + conv = xlib_rgb_convert_gray4_pack; + conv_d = xlib_rgb_convert_gray4_d_pack; + } + + if (conv_d == NULL) + conv_d = conv; + + image_info->conv = conv; + image_info->conv_d = conv_d; + + image_info->conv_32 = conv_32; + image_info->conv_32_d = conv_32_d; + + image_info->conv_gray = conv_gray; + image_info->conv_gray_d = conv_gray_d; + + image_info->conv_indexed = conv_indexed; + image_info->conv_indexed_d = conv_indexed_d; +} + +static int horiz_idx; +static int horiz_y = IMAGE_HEIGHT; +static int vert_idx; +static int vert_x = IMAGE_WIDTH; +static int tile_idx; +static int tile_x = IMAGE_WIDTH; +static int tile_y1 = IMAGE_HEIGHT; +static int tile_y2 = IMAGE_HEIGHT; + +#ifdef VERBOSE +static int sincelast; +#endif + +/* Defining NO_FLUSH can cause inconsistent screen updates, but is useful + for performance evaluation. */ + +#undef NO_FLUSH + +static int +xlib_rgb_alloc_scratch_image (void) +{ + if (static_image_idx == N_IMAGES) + { +#ifndef NO_FLUSH + XFlush(image_info->display); +#endif +#ifdef VERBOSE + printf ("flush, %d puts since last flush\n", sincelast); + sincelast = 0; +#endif + static_image_idx = 0; + horiz_y = IMAGE_HEIGHT; + vert_x = IMAGE_WIDTH; + tile_x = IMAGE_WIDTH; + tile_y1 = tile_y2 = IMAGE_HEIGHT; + } + return static_image_idx++; +} + +static XImage * +xlib_rgb_alloc_scratch (int width, int height, int *ax, int *ay) +{ + XImage *image; + int idx; + + if (width >= (IMAGE_WIDTH >> 1)) + { + if (height >= (IMAGE_HEIGHT >> 1)) + { + idx = xlib_rgb_alloc_scratch_image (); + *ax = 0; + *ay = 0; + } + else + { + if (height + horiz_y > IMAGE_HEIGHT) + { + horiz_idx = xlib_rgb_alloc_scratch_image (); + horiz_y = 0; + } + idx = horiz_idx; + *ax = 0; + *ay = horiz_y; + horiz_y += height; + } + } + else + { + if (height >= (IMAGE_HEIGHT >> 1)) + { + if (width + vert_x > IMAGE_WIDTH) + { + vert_idx = xlib_rgb_alloc_scratch_image (); + vert_x = 0; + } + idx = vert_idx; + *ax = vert_x; + *ay = 0; + /* using 3 and -4 would be slightly more efficient on 32-bit machines + with > 1bpp displays */ + vert_x += (width + 7) & -8; + } + else + { + if (width + tile_x > IMAGE_WIDTH) + { + tile_y1 = tile_y2; + tile_x = 0; + } + if (height + tile_y1 > IMAGE_HEIGHT) + { + tile_idx = xlib_rgb_alloc_scratch_image (); + tile_x = 0; + tile_y1 = 0; + tile_y2 = 0; + } + if (height + tile_y1 > tile_y2) + tile_y2 = height + tile_y1; + idx = tile_idx; + *ax = tile_x; + *ay = tile_y1; + tile_x += (width + 7) & -8; + } + } + image = static_image[idx]; +#ifdef VERBOSE + printf ("index %d, x %d, y %d (%d x %d)\n", idx, *ax, *ay, width, height); + sincelast++; +#endif + return image; +} + +static void +xlib_draw_rgb_image_core (Drawable drawable, + GC gc, + int x, + int y, + int width, + int height, + unsigned char *buf, + int pixstride, + int rowstride, + XlibRgbConvFunc conv, + XlibRgbCmap *cmap, + int xdith, + int ydith) +{ + int ay, ax; + int xs0, ys0; + XImage *image; + int width1, height1; + unsigned char *buf_ptr; + + if (image_info->bitmap) + { + if (image_info->own_gc == 0) + { + XColor color; + + image_info->own_gc = XCreateGC(image_info->display, + drawable, + 0, NULL); + color.pixel = WhitePixel(image_info->display, + image_info->screen_num); + XSetForeground(image_info->display, image_info->own_gc, color.pixel); + color.pixel = BlackPixel(image_info->display, + image_info->screen_num); + XSetBackground(image_info->display, image_info->own_gc, color.pixel); + } + gc = image_info->own_gc; + } + for (ay = 0; ay < height; ay += IMAGE_HEIGHT) + { + height1 = MIN (height - ay, IMAGE_HEIGHT); + for (ax = 0; ax < width; ax += IMAGE_WIDTH) + { + width1 = MIN (width - ax, IMAGE_WIDTH); + buf_ptr = buf + ay * rowstride + ax * pixstride; + + image = xlib_rgb_alloc_scratch (width1, height1, &xs0, &ys0); + + conv (image, xs0, ys0, width1, height1, buf_ptr, rowstride, + x + ax + xdith, y + ay + ydith, cmap); + +#ifndef DONT_ACTUALLY_DRAW + XPutImage(image_info->display, drawable, gc, image, + xs0, ys0, x + ax, y + ay, (unsigned int)width1, (unsigned int)height1); +#endif + } + } +} + + +/** + * xlib_draw_rgb_image: + * @drawable: Destination drawable. + * @gc: A graphic context. + * @x: Leftmost coordinate of the destination rectangle. + * @y: Upper coordinate of the destination rectangle. + * @width: Width of the destination rectangle, in pixels. + * @height: Height of the destination rectangle, in pixels. + * @dith: Dithering method to use. + * @rgb_buf: Pointer to the pixel in the RGB buffer that corresponds to the + * upper-left corner of the rectangular region to render. + * @rowstride: Offset between pixel rows in the RGB buffer, in bytes. + * + * Renders an RGB buffer to a drawable. Pixels are specified as RGB triplets + * with 8 bits per channel. An image will thus look like an RGBRGBRGBRGB + * sequence of 8-bit values. This function does not let you specify dither + * offsets; applications that need to render partial regions of a buffer to + * build the final image should use xlib_draw_rgb_image_dithalign() instead. + **/ +void +xlib_draw_rgb_image (Drawable drawable, + GC gc, + int x, + int y, + int width, + int height, + XlibRgbDither dith, + unsigned char *rgb_buf, + int rowstride) +{ + if (dith == XLIB_RGB_DITHER_NONE || (dith == XLIB_RGB_DITHER_NORMAL && + !image_info->dith_default)) + xlib_draw_rgb_image_core (drawable, gc, x, y, width, height, + rgb_buf, 3, rowstride, image_info->conv, NULL, + 0, 0); + else + xlib_draw_rgb_image_core (drawable, gc, x, y, width, height, + rgb_buf, 3, rowstride, image_info->conv_d, NULL, + 0, 0); +} + +/** + * xlib_draw_rgb_image_dithalign: + * @drawable: Destination drawable. + * @gc: A graphic context. + * @x: Leftmost coordinate of the destination rectangle. + * @y: Upper coordinate of the destination rectangle. + * @width: Width of the destination rectangle, in pixels. + * @height: Height of the destination rectangle, in pixels. + * @dith: Dithering method to use. + * @rgb_buf: Pointer to the pixel in the RGB buffer that corresponds to the + * upper-left corner of the rectangular region to render. + * @rowstride: Offset between pixel rows in the RGB buffer, in bytes. + * @xdith: X offset for the dither mask. + * @ydith: Y offset for the dither mask. + * + * Renders an RGB buffer to a drawable. Pixels are specified as RGB triplets + * with 8 bits per channel. An image will thus look like an RGBRGBRGBRGB + * sequence of 8-bit values. This function lets you specify a pair of dither + * offsets. It should be used when you need to render regions of an RGB buffer + * separately to form the final image; the dither offsets let you align the + * dither mask appropriately. + **/ +void +xlib_draw_rgb_image_dithalign (Drawable drawable, + GC gc, + int x, + int y, + int width, + int height, + XlibRgbDither dith, + unsigned char *rgb_buf, + int rowstride, + int xdith, + int ydith) +{ + if (dith == XLIB_RGB_DITHER_NONE || (dith == XLIB_RGB_DITHER_NORMAL && + !image_info->dith_default)) + xlib_draw_rgb_image_core (drawable, gc, x, y, width, height, + rgb_buf, 3, rowstride, image_info->conv, NULL, + xdith, ydith); + else + xlib_draw_rgb_image_core (drawable, gc, x, y, width, height, + rgb_buf, 3, rowstride, image_info->conv_d, NULL, + xdith, ydith); +} + +/** + * xlib_draw_rgb_32_image: + * @drawable: Destination drawable. + * @gc: A graphic context. + * @x: Leftmost coordinate of the destination rectangle. + * @y: Upper coordinate of the destination rectangle. + * @width: Width of the destination rectangle, in pixels. + * @height: Height of the destination rectangle, in pixels. + * @dith: Dithering method to use. + * @buf: Pointer to the pixel in the RGB buffer that corresponds to the + * upper-left corner of the rectangular region to render. + * @rowstride: Offset between pixel rows in the RGB buffer, in bytes. + * + * This function is analogous to xlib_draw_rgb_image(), but it lets you use + * 32-bit RGB buffers with pixels specified as 0xRRGGBB00. The + * least-significant 8 bits are actually discarded. This function can lead to + * faster results than xlib_draw_rgb_image() since the pixels are aligned on + * 32-bit boundaries. + **/ +void +xlib_draw_rgb_32_image (Drawable drawable, + GC gc, + int x, + int y, + int width, + int height, + XlibRgbDither dith, + unsigned char *buf, + int rowstride) +{ + if (dith == XLIB_RGB_DITHER_NONE || (dith == XLIB_RGB_DITHER_NORMAL && + !image_info->dith_default)) + xlib_draw_rgb_image_core (drawable, gc, x, y, width, height, + buf, 4, rowstride, + image_info->conv_32, NULL, 0, 0); + else + xlib_draw_rgb_image_core (drawable, gc, x, y, width, height, + buf, 4, rowstride, + image_info->conv_32_d, NULL, 0, 0); +} + +static void +xlib_rgb_make_gray_cmap (XlibRgbInfo *info) +{ + unsigned int rgb[256]; + int i; + + for (i = 0; i < 256; i++) + rgb[i] = (i << 16) | (i << 8) | i; + info->gray_cmap = xlib_rgb_cmap_new (rgb, 256); +} + +/** + * xlib_draw_gray_image: + * @drawable: Destination drawable. + * @gc: A graphic context. + * @x: Leftmost coordinate of the destination rectangle. + * @y: Upper coordinate of the destination rectangle. + * @width: Width of the destination rectangle, in pixels. + * @height: Height of thd destination rectangle, in pixels. + * @dith: Dithering method to use. + * @buf: Pointer to the pixel in the grayscale buffer that corresponds to the + * upper-left corner of the rectangular region to render. + * @rowstride: Offset between pixel rows in the grayscale buffer, in pixels. + * + * Renders a grayscale buffer to a drawable. Pixels are specified as 8-bit + * intensity values. An image will thus look as a GGGGGG sequence of 8-bit + * values. + **/ +void +xlib_draw_gray_image (Drawable drawable, + GC gc, + int x, + int y, + int width, + int height, + XlibRgbDither dith, + unsigned char *buf, + int rowstride) +{ + if (image_info->bpp == 1 && + image_info->gray_cmap == NULL && + (image_info->x_visual_info->class == PseudoColor || + image_info->x_visual_info->class == GrayScale)) + xlib_rgb_make_gray_cmap (image_info); + + if (dith == XLIB_RGB_DITHER_NONE || (dith == XLIB_RGB_DITHER_NORMAL && + !image_info->dith_default)) + xlib_draw_rgb_image_core (drawable, gc, x, y, width, height, + buf, 1, rowstride, + image_info->conv_gray, NULL, 0, 0); + else + xlib_draw_rgb_image_core (drawable, gc, x, y, width, height, + buf, 1, rowstride, + image_info->conv_gray_d, NULL, 0, 0); +} + +/** + * xlib_rgb_cmap_new: + * @colors: FIXME + * @n_colors: FIXME + * + * FIXME + * + * Return value: FIXME + **/ +XlibRgbCmap * +xlib_rgb_cmap_new (unsigned int *colors, int n_colors) +{ + XlibRgbCmap *cmap; + int i, j; + unsigned int rgb; + + if (n_colors < 0) + return NULL; + if (n_colors > 256) + return NULL; + cmap = malloc(sizeof(XlibRgbCmap)); + memcpy (cmap->colors, colors, n_colors * sizeof(unsigned int)); + if (image_info->bpp == 1 && + (image_info->x_visual_info->class == PseudoColor || + image_info->x_visual_info->class == GrayScale)) + for (i = 0; i < n_colors; i++) + { + rgb = colors[i]; + j = ((rgb & 0xf00000) >> 12) | + ((rgb & 0xf000) >> 8) | + ((rgb & 0xf0) >> 4); +#ifdef VERBOSE + printf ("%d %x %x %d\n", i, j, colorcube[j]); +#endif + cmap->lut[i] = colorcube[j]; + } + return cmap; +} + +/** + * xlib_rgb_cmap_free: + * @cmap: An XlibRGB colormap. + * + * Frees an XlibRGB colormap. + **/ +void +xlib_rgb_cmap_free (XlibRgbCmap *cmap) +{ + free (cmap); +} + +/** + * xlib_draw_indexed_image: + * @drawable: FIXME + * @gc: FIXME + * @x: FIXME + * @y: FIXME + * @width: FIXME + * @height: FIXME + * @dith: FIXME + * @buf: FIXME + * @rowstride: FIXME + * @cmap: FIXME + * + * FIXME + **/ +void +xlib_draw_indexed_image (Drawable drawable, + GC gc, + int x, + int y, + int width, + int height, + XlibRgbDither dith, + unsigned char *buf, + int rowstride, + XlibRgbCmap *cmap) +{ + if (dith == XLIB_RGB_DITHER_NONE || (dith == XLIB_RGB_DITHER_NORMAL && + !image_info->dith_default)) + xlib_draw_rgb_image_core (drawable, gc, x, y, width, height, + buf, 1, rowstride, + image_info->conv_indexed, cmap, 0, 0); + else + xlib_draw_rgb_image_core (drawable, gc, x, y, width, height, + buf, 1, rowstride, + image_info->conv_indexed_d, cmap, 0, 0); +} + +/** + * xlib_rgb_ditherable: + * + * Queries whether XlibRGB supports dithering for its chosen visual. + * + * Return value: TRUE if dithering can be performed for the visual that XlibRGB + * is using, FALSE otherwise. + **/ +Bool +xlib_rgb_ditherable (void) +{ + return (image_info->conv != image_info->conv_d); +} + +/** + * xlib_rgb_get_cmap: + * + * Queries the X colormap that XlibRGB is using. + * + * Return value: An X colormap. + **/ +Colormap +xlib_rgb_get_cmap (void) +{ + /* xlib_rgb_init (); */ + if (image_info) + return image_info->cmap; + else + return 0; +} + +/** + * xlib_rgb_get_visual: + * + * Queries the visual that XlibRGB is using. + * + * Return value: An X visual. + **/ +Visual * +xlib_rgb_get_visual (void) +{ + /* xlib_rgb_init (); */ + if (image_info) + return image_info->x_visual_info->visual; + else + return 0; +} + +/** + * xlib_rgb_get_visual_info: + * + * Queries the visual info structure for the visual that XlibRGB is using. + * + * Return value: An XVisualInfo structure. + **/ +XVisualInfo * +xlib_rgb_get_visual_info (void) +{ + /* xlib_rgb_init (); */ + if (image_info) + return image_info->x_visual_info; + else + return 0; +} + +/** + * xlib_rgb_get_depth: + * + * Queries the depth of the visual that XlibRGB is using. + * + * Return value: Bit depth. + **/ +int +xlib_rgb_get_depth (void) +{ + XVisualInfo * v = xlib_rgb_get_visual_info(); + + if (v) + { + return v->depth; + } + + return 0; +} + +/** + * xlib_rgb_get_display: + * + * Queries the X display that XlibRGB is using. + * + * Return value: An X display. + **/ +Display * +xlib_rgb_get_display (void) +{ + if (image_info) + return image_info->display; + + return NULL; +} + +/** + * xlib_rgb_get_screen: + * + * Queries the screen that XlibRGB is using. + * + * Return value: An X screen. + **/ +Screen * +xlib_rgb_get_screen (void) +{ + if (image_info) + return image_info->screen; + + return NULL; +} diff --git a/karbon/render/xrgbrender/gdk-pixbuf-xlibrgb.h b/karbon/render/xrgbrender/gdk-pixbuf-xlibrgb.h new file mode 100644 index 00000000..d35c1c87 --- /dev/null +++ b/karbon/render/xrgbrender/gdk-pixbuf-xlibrgb.h @@ -0,0 +1,194 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- + * + * The contents of this file are subject to the Mozilla Public License + * Version 1.1 (the "MPL"); you may not use this file except in + * compliance with the MPL. You may obtain a copy of the MPL at + * http://www.mozilla.org/MPL/ + * + * Software distributed under the MPL is distributed on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the MPL + * for the specific language governing rights and limitations under the + * MPL. + * + * Alternatively, the contents of this file may be used under the + * terms of the GNU Library General Public License (the "LGPL"), in + * which case the provisions of the LGPL are applicable instead of + * those above. If you wish to allow use of your version of this file + * only under the terms of the LGPL and not to allow others to use + * your version of this file under the MPL, indicate your decision by + * deleting the provisions above and replace them with the notice and + * other provisions required by the LGPL. If you do not delete the + * provisions above, a recipient may use your version of this file + * under either the MPL or the LGPL. + */ + +/* + * This code is derived from GdkRgb. + * For more information on GdkRgb, see http://www.levien.com/gdkrgb/ + * Raph Levien <raph@acm.org> + */ + +/* Ported by Christopher Blizzard to Xlib. With permission from the + * original authors of this file, the contents of this file are also + * redistributable under the terms of the Mozilla Public license. For + * information about the Mozilla Public License, please see the + * license information at http://www.mozilla.org/MPL/ + */ + +/* This code is copyright the following authors: + * Raph Levien <raph@acm.org> + * Manish Singh <manish@gtk.org> + * Tim Janik <timj@gtk.org> + * Peter Mattis <petm@xcf.berkeley.edu> + * Spencer Kimball <spencer@xcf.berkeley.edu> + * Josh MacDonald <jmacd@xcf.berkeley.edu> + * Christopher Blizzard <blizzard@redhat.com> + * Owen Taylor <otaylor@redhat.com> + * Shawn T. Amundson <amundson@gtk.org> +*/ + + +#ifndef __XLIB_RGB_H__ +#define __XLIB_RGB_H__ + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + +#include <X11/Xlib.h> +#include <X11/Xutil.h> +#include <X11/Xos.h> +#include <X11/Intrinsic.h> + + +typedef struct _XlibRgbCmap XlibRgbCmap; + +struct _XlibRgbCmap { + unsigned int colors[256]; + unsigned char lut[256]; /* for 8-bit modes */ +}; + +void +xlib_rgb_init (Display *display, Screen *screen); +void +xlib_rgb_init_with_depth (Display *display, Screen *screen, int prefDepth); + +unsigned long +xlib_rgb_xpixel_from_rgb (unsigned int rgb); + +void +xlib_rgb_gc_set_foreground (GC gc, unsigned int rgb); + +void +xlib_rgb_gc_set_background (GC gc, unsigned int rgb); + +typedef enum +{ + XLIB_RGB_DITHER_NONE, + XLIB_RGB_DITHER_NORMAL, + XLIB_RGB_DITHER_MAX +} XlibRgbDither; + +void +xlib_draw_rgb_image (Drawable drawable, + GC gc, + int x, + int y, + int width, + int height, + XlibRgbDither dith, + unsigned char *rgb_buf, + int rowstride); + +void +xlib_draw_rgb_image_dithalign (Drawable drawable, + GC gc, + int x, + int y, + int width, + int height, + XlibRgbDither dith, + unsigned char *rgb_buf, + int rowstride, + int xdith, + int ydith); + +void +xlib_draw_rgb_32_image (Drawable drawable, + GC gc, + int x, + int y, + int width, + int height, + XlibRgbDither dith, + unsigned char *buf, + int rowstride); + +void +xlib_draw_gray_image (Drawable drawable, + GC gc, + int x, + int y, + int width, + int height, + XlibRgbDither dith, + unsigned char *buf, + int rowstride); + +XlibRgbCmap * +xlib_rgb_cmap_new (unsigned int *colors, int n_colors); + +void +xlib_rgb_cmap_free (XlibRgbCmap *cmap); + +void +xlib_draw_indexed_image (Drawable drawable, + GC gc, + int x, + int y, + int width, + int height, + XlibRgbDither dith, + unsigned char *buf, + int rowstride, + XlibRgbCmap *cmap); + +/* Below are some functions which are primarily useful for debugging + and experimentation. */ +Bool +xlib_rgb_ditherable (void); + +void +xlib_rgb_set_verbose (Bool verbose); + +/* experimental colormap stuff */ +void +xlib_rgb_set_install (Bool install); + +void +xlib_rgb_set_min_colors (int min_colors); + +Colormap +xlib_rgb_get_cmap (void); + +Visual * +xlib_rgb_get_visual (void); + +XVisualInfo * +xlib_rgb_get_visual_info (void); + +int +xlib_rgb_get_depth (void); + +Display * +xlib_rgb_get_display (void); + +Screen * +xlib_rgb_get_screen (void); + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + + +#endif /* __XLIB_RGB_H__ */ |