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Diffstat (limited to 'experimental/tqtinterface/qt4/src/kernel/tqpixmap_x11.cpp')
| -rw-r--r-- | experimental/tqtinterface/qt4/src/kernel/tqpixmap_x11.cpp | 2155 |
1 files changed, 2155 insertions, 0 deletions
diff --git a/experimental/tqtinterface/qt4/src/kernel/tqpixmap_x11.cpp b/experimental/tqtinterface/qt4/src/kernel/tqpixmap_x11.cpp new file mode 100644 index 000000000..974f23c32 --- /dev/null +++ b/experimental/tqtinterface/qt4/src/kernel/tqpixmap_x11.cpp @@ -0,0 +1,2155 @@ +/**************************************************************************** +** +** Implementation of TQPixmap class for X11 +** +** Created : 940501 +** +** Copyright (C) 2010 Timothy Pearson and (C) 1992-2008 Trolltech ASA. +** +** This file is part of the kernel module of the TQt GUI Toolkit. +** +** This file may be used under the terms of the GNU General +** Public License versions 2.0 or 3.0 as published by the Free +** Software Foundation and appearing in the files LICENSE.GPL2 +** and LICENSE.GPL3 included in the packaging of this file. +** Alternatively you may (at your option) use any later version +** of the GNU General Public License if such license has been +** publicly approved by Trolltech ASA (or its successors, if any) +** and the KDE Free TQt Foundation. +** +** Please review the following information to ensure GNU General +** Public Licensing requirements will be met: +** http://trolltech.com/products/qt/licenses/licensing/opensource/. +** If you are unsure which license is appropriate for your use, please +** review the following information: +** http://trolltech.com/products/qt/licenses/licensing/licensingoverview +** or contact the sales department at sales@trolltech.com. +** +** This file may be used under the terms of the Q Public License as +** defined by Trolltech ASA and appearing in the file LICENSE.TQPL +** included in the packaging of this file. Licensees holding valid TQt +** Commercial licenses may use this file in accordance with the TQt +** Commercial License Agreement provided with the Software. +** +** This file is provided "AS IS" with NO WARRANTY OF ANY KIND, +** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted +** herein. +** +**********************************************************************/ + +// NOT REVISED + +// Uncomment the next line to enable the MIT Shared Memory extension +// +// WARNING: This has some problems: +// +// 1. Consumes a 800x600 pixmap +// 2. TQt does not handle the ShmCompletion message, so you will +// get strange effects if you xForm() repeatedly. +// +// #define TQT_MITSHM + +#if defined(TQ_OS_WIN32) && defined(TQT_MITSHM) +#undef TQT_MITSHM +#endif + +#include "tqplatformdefs.h" + +#include "tqbitmap.h" +#include "tqpaintdevicemetrics.h" +#include "tqimage.h" +#include "tqwmatrix.h" +#include "tqapplication.h" +#include "tqt_x11_p.h" + +#include <stdlib.h> + +#if defined(TQ_CC_MIPS) +# define for if(0){}else for +#endif + +#ifdef USE_QT4 + +/*! + Returns the window system handle of the paint tqdevice, for + low-level access. Using this function is not portable. + + The HANDLE type varies with platform; see \c tqpaintdevice.h and + \c tqwindowdefs.h for details. + + \sa x11Display() +*/ +TQt::HANDLE TQPixmap::handle() const +{ + return QPixmap::handle(); +} + +/*! + Returns the window system handle of the paint tqdevice for XRender + support. Use of this function is not portable. This function will + return 0 if XRender support is not compiled into TQt, if the + XRender extension is not supported on the X11 display, or if the + handle could not be created. +*/ +TQt::HANDLE TQPixmap::x11RenderHandle() const +{ +// #ifndef TQT_NO_XFTFREETYPE +// return rendhd ? XftDrawPicture( (XftDraw *) rendhd ) : 0; +// #else +// return 0; +// #endif // TQT_NO_XFTFREETYPE + + // [FIXME] + printf("[WARNING] TQPixmap::x11RenderHandle() const unimplemented\n\r"); + return 0; +} + +#else // USE_QT4 + +/*! + \class TQPixmap::TQPixmapData + \brief The TQPixmap::TQPixmapData class is an internal class. + \internal +*/ + + +// For thread-safety: +// image->data does not belong to X11, so we must free it ourselves. + +inline static void qSafeXDestroyImage( XImage *x ) +{ + if ( x->data ) { + free( x->data ); + x->data = 0; + } + XDestroyImage( x ); +} + + +/***************************************************************************** + MIT Shared Memory Extension support: makes xForm noticeably (~20%) faster. + *****************************************************************************/ + +#if defined(TQT_MITSHM) + +static bool xshminit = FALSE; +static XShmSegmentInfo xshminfo; +static XImage *xshmimg = 0; +static Pixmap xshmpm = 0; + +static void qt_cleanup_mitshm() +{ + if ( xshmimg == 0 ) + return; + Display *dpy = TQPaintDevice::x11AppDisplay(); + if ( xshmpm ) { + XFreePixmap( dpy, xshmpm ); + xshmpm = 0; + } + XShmDetach( dpy, &xshminfo ); xshmimg->data = 0; + qSafeXDestroyImage( xshmimg ); xshmimg = 0; + shmdt( xshminfo.shmaddr ); + shmctl( xshminfo.shmid, IPC_RMID, 0 ); +} + + +static bool qt_create_mitshm_buffer( const TQPaintDevice* dev, int w, int h ) +{ + static int major, minor; + static Bool pixmaps_ok; + Display *dpy = dev->x11Display(); + int dd = dev->x11Depth(); + Visual *vis = (Visual*)dev->x11Visual(); + + if ( xshminit ) { + qt_cleanup_mitshm(); + } else { + if ( !XShmQueryVersion(dpy, &major, &minor, &pixmaps_ok) ) + return FALSE; // MIT Shm not supported + qAddPostRoutine( qt_cleanup_mitshm ); + xshminit = TRUE; + } + + xshmimg = XShmCreateImage( dpy, vis, dd, ZPixmap, 0, &xshminfo, w, h ); + if ( !xshmimg ) + return FALSE; + + bool ok; + xshminfo.shmid = shmget( IPC_PRIVATE, + xshmimg->bytes_per_line * xshmimg->height, + IPC_CREAT | 0777 ); + ok = xshminfo.shmid != -1; + if ( ok ) { + xshmimg->data = (char*)shmat( xshminfo.shmid, 0, 0 ); + xshminfo.shmaddr = xshmimg->data; + ok = ( xshminfo.shmaddr != (char*)-1 ); + } + xshminfo.readOnly = FALSE; + if ( ok ) + ok = XShmAttach( dpy, &xshminfo ); + if ( !ok ) { + qSafeXDestroyImage( xshmimg ); + xshmimg = 0; + if ( xshminfo.shmaddr ) + shmdt( xshminfo.shmaddr ); + if ( xshminfo.shmid != -1 ) + shmctl( xshminfo.shmid, IPC_RMID, 0 ); + return FALSE; + } + if ( pixmaps_ok ) + xshmpm = XShmCreatePixmap( dpy, DefaultRootWindow(dpy), xshmimg->data, + &xshminfo, w, h, dd ); + + return TRUE; +} + +#else + +// If extern, need a dummy. +// +// static bool qt_create_mitshm_buffer( TQPaintDevice*, int, int ) +// { +// return FALSE; +// } + +#endif // TQT_MITSHM + + +/***************************************************************************** + Internal functions + *****************************************************************************/ + +extern const uchar *qt_get_bitflip_array(); // defined in qimage.cpp + +static uchar *flip_bits( const uchar *bits, int len ) +{ + register const uchar *p = bits; + const uchar *end = p + len; + uchar *newdata = new uchar[len]; + uchar *b = newdata; + const uchar *f = qt_get_bitflip_array(); + while ( p < end ) + *b++ = f[*p++]; + return newdata; +} + +// Returns position of highest bit set or -1 if none +static int highest_bit( uint v ) +{ + int i; + uint b = (uint)1 << 31; + for ( i=31; ((b & v) == 0) && i>=0; i-- ) + b >>= 1; + return i; +} + +// Returns position of lowest set bit in 'v' as an integer (0-31), or -1 +static int lowest_bit( uint v ) +{ + int i; + ulong lb; + lb = 1; + for (i=0; ((v & lb) == 0) && i<32; i++, lb<<=1); + return i==32 ? -1 : i; +} + +// Counts the number of bits set in 'v' +static uint n_bits( uint v ) +{ + int i = 0; + while ( v ) { + v = v & (v - 1); + i++; + } + return i; +} + +static uint *red_scale_table = 0; +static uint *green_scale_table = 0; +static uint *blue_scale_table = 0; + +static void cleanup_scale_tables() +{ + delete[] red_scale_table; + delete[] green_scale_table; + delete[] blue_scale_table; +} + +/* + Could do smart bitshifting, but the "obvious" algorithm only works for + nBits >= 4. This is more robust. +*/ +static void build_scale_table( uint **table, uint nBits ) +{ + if ( nBits > 7 ) { +#if defined(TQT_CHECK_RANGE) + qWarning( "build_scale_table: internal error, nBits = %i", nBits ); +#endif + return; + } + if (!*table) { + static bool firstTable = TRUE; + if ( firstTable ) { + qAddPostRoutine( cleanup_scale_tables ); + firstTable = FALSE; + } + *table = new uint[256]; + } + int maxVal = (1 << nBits) - 1; + int valShift = 8 - nBits; + int i; + for( i = 0 ; i < maxVal + 1 ; i++ ) + (*table)[i << valShift] = i*255/maxVal; +} + +static int defaultScreen = -1; + +extern bool qt_use_xrender; // defined in qapplication_x11.cpp +extern bool qt_has_xft; // defined in qfont_x11.cpp + +#ifndef TQT_NO_XFTFREETYPE +#ifndef TQT_XFT2 +// Xft1 doesn't have XftDrawCreateAlpha, so we fake it in qtaddons_x11.cpp +extern "C" XftDraw *XftDrawCreateAlpha( Display *, TQt::HANDLE, int ); +#endif // TQT_XFT2 +#endif // TQT_NO_XFTFREETYPE + +/***************************************************************************** + TQPixmap member functions + *****************************************************************************/ + +/*! + \internal + Initializes the pixmap data. +*/ + +void TQPixmap::init( int w, int h, int d, bool bitmap, Optimization optim ) +{ +#if defined(TQT_CHECK_STATE) + if ( tqApp->type() == TQApplication::Tty ) { + qWarning( "TQPixmap: Cannot create a TQPixmap when no GUI " + "is being used" ); + } +#endif + + static int serial = 0; + + if ( defaultScreen >= 0 && defaultScreen != x11Screen() ) { + TQPaintDeviceX11Data* xd = getX11Data( TRUE ); + xd->x_screen = defaultScreen; + xd->x_depth = TQPaintDevice::x11AppDepth( xd->x_screen ); + xd->x_cells = TQPaintDevice::x11AppCells( xd->x_screen ); + xd->x_colormap = TQPaintDevice::x11AppColormap( xd->x_screen ); + xd->x_defcolormap = TQPaintDevice::x11AppDefaultColormap( xd->x_screen ); + xd->x_visual = TQPaintDevice::x11AppVisual( xd->x_screen ); + xd->x_defvisual = TQPaintDevice::x11AppDefaultVisual( xd->x_screen ); + setX11Data( xd ); + } + + int dd = x11Depth(); + + if ( d != -1 ) + dd = d; + + if ( optim == DefaultOptim ) // use default optimization + optim = defOptim; + + data = new TQPixmapData; + TQ_CHECK_PTR( data ); + + memset( data, 0, sizeof(TQPixmapData) ); + data->count = 1; + data->uninit = TRUE; + data->bitmap = bitmap; + data->ser_no = ++serial; + data->optim = optim; + + bool make_null = w == 0 || h == 0; // create null pixmap + if ( d == 1 ) // monocrome pixmap + data->d = 1; + else if ( d < 0 || d == dd ) // def depth pixmap + data->d = dd; + if ( make_null || w < 0 || h < 0 || data->d == 0 ) { + hd = 0; + rendhd = 0; +#if defined(TQT_CHECK_RANGE) + if ( !make_null ) + qWarning( "TQPixmap: Invalid pixmap parameters" ); +#endif + return; + } + data->w = w; + data->h = h; + hd = (HANDLE)XCreatePixmap( x11Display(), RootWindow(x11Display(), x11Screen() ), + w, h, data->d ); + +#ifndef TQT_NO_XFTFREETYPE + if ( qt_has_xft ) { + if ( data->d == 1 ) { + rendhd = (HANDLE) XftDrawCreateBitmap( x11Display(), hd ); + } else { + rendhd = (HANDLE) XftDrawCreate( x11Display(), hd, + (Visual *) x11Visual(), + x11Colormap() ); + } + } +#endif // TQT_NO_XFTFREETYPE + +} + + +void TQPixmap::deref() +{ + if ( data && data->deref() ) { // last reference lost + delete data->tqmask; + delete data->alphapm; + if ( data->ximage ) + qSafeXDestroyImage( (XImage*)data->ximage ); + if ( data->maskgc ) + XFreeGC( x11Display(), (GC)data->maskgc ); + if ( tqApp && hd) { + +#ifndef TQT_NO_XFTFREETYPE + if (rendhd) { + XftDrawDestroy( (XftDraw *) rendhd ); + rendhd = 0; + } +#endif // TQT_NO_XFTFREETYPE + + XFreePixmap( x11Display(), hd ); + hd = 0; + } + delete data; + } +} + + +/*! + Constructs a monochrome pixmap, with width \a w and height \a h, + that is initialized with the data in \a bits. The \a isXbitmap + indicates whether the data is an X bitmap and defaults to FALSE. + This constructor is protected and used by the TQBitmap class. +*/ + +TQPixmap::TQPixmap( int w, int h, const uchar *bits, bool isXbitmap) + : TQPaintDevice( TQInternal::Pixmap ) +{ // for bitmaps only + init( 0, 0, 0, FALSE, defOptim ); + if ( w <= 0 || h <= 0 ) // create null pixmap + return; + + data->uninit = FALSE; + data->w = w; + data->h = h; + data->d = 1; + uchar *flipped_bits; + if ( isXbitmap ) { + flipped_bits = 0; + } else { // not X bitmap -> flip bits + flipped_bits = flip_bits( bits, ((w+7)/8)*h ); + bits = flipped_bits; + } + hd = (HANDLE)XCreateBitmapFromData( x11Display(), + RootWindow(x11Display(), x11Screen() ), + (char *)bits, w, h ); + +#ifndef TQT_NO_XFTFREETYPE + if ( qt_has_xft ) + rendhd = (HANDLE) XftDrawCreateBitmap (x11Display (), hd); +#endif // TQT_NO_XFTFREETYPE + + if ( flipped_bits ) // Avoid purify complaint + delete [] flipped_bits; +} + + +/*! + This is a special-purpose function that detaches the pixmap from + shared pixmap data. + + A pixmap is automatically detached by TQt whenever its contents is + about to change. This is done in all TQPixmap member functions + that modify the pixmap (fill(), resize(), convertFromImage(), + load(), etc.), in bitBlt() for the destination pixmap and in + TQPainter::begin() on a pixmap. + + It is possible to modify a pixmap without letting TQt know. You can + first obtain the system-dependent handle() and then call + system-specific functions (for instance, BitBlt under Windows) + that modify the pixmap contents. In such cases, you can call + detach() to cut the pixmap loose from other pixmaps that share + data with this one. + + detach() returns immediately if there is just a single reference + or if the pixmap has not been initialized yet. +*/ + +void TQPixmap::detach() +{ + if ( data->count != 1 ) + *this = copy(); + data->uninit = FALSE; + + // reset cached data + if ( data->ximage ) { + qSafeXDestroyImage( (XImage*)data->ximage ); + data->ximage = 0; + } + if ( data->maskgc ) { + XFreeGC( x11Display(), (GC)data->maskgc ); + data->maskgc = 0; + } +} + + +/*! + Returns the default pixmap depth, i.e. the depth a pixmap gets if + -1 is specified. + + \sa depth() +*/ + +int TQPixmap::defaultDepth() +{ + return x11AppDepth(); +} + + +/*! + \fn TQPixmap::Optimization TQPixmap::optimization() const + + Returns the optimization setting for this pixmap. + + The default optimization setting is \c TQPixmap::NormalOptim. You + can change this setting in two ways: + \list + \i Call setDefaultOptimization() to set the default optimization + for all new pixmaps. + \i Call setOptimization() to set the optimization for individual + pixmaps. + \endlist + + \sa setOptimization(), setDefaultOptimization(), defaultOptimization() +*/ + +/*! + Sets pixmap drawing optimization for this pixmap. + + The \a optimization setting affects pixmap operations, in + particular drawing of transtqparent pixmaps (bitBlt() a pixmap with + a tqmask set) and pixmap transformations (the xForm() function). + + Pixmap optimization involves keeping intermediate results in a + cache buffer and using the cache to speed up bitBlt() and xForm(). + The cost is more memory consumption, up to twice as much as an + unoptimized pixmap. + + Use the setDefaultOptimization() to change the default + optimization for all new pixmaps. + + \sa optimization(), setDefaultOptimization(), defaultOptimization() +*/ + +void TQPixmap::setOptimization( Optimization optimization ) +{ + if ( optimization == data->optim ) + return; + detach(); + data->optim = optimization == DefaultOptim ? + defOptim : optimization; + if ( data->optim == MemoryOptim && data->ximage ) { + qSafeXDestroyImage( (XImage*)data->ximage ); + data->ximage = 0; + } +} + + +/*! + Fills the pixmap with the color \a fillColor. +*/ + +void TQPixmap::fill( const TQColor &fillColor ) +{ + if ( isNull() ) + return; + detach(); // detach other references + GC gc = qt_xget_temp_gc( x11Screen(), depth()==1 ); + XSetForeground( x11Display(), gc, fillColor.pixel(x11Screen()) ); + XFillRectangle( x11Display(), hd, gc, 0, 0, width(), height() ); +} + + +/*! + Internal implementation of the virtual TQPaintDevice::metric() function. + + Use the TQPaintDeviceMetrics class instead. + + \a m is the metric to get. +*/ + +int TQPixmap::metric( int m ) const +{ + int val; + if ( m == TQPaintDeviceMetrics::PdmWidth ) + val = width(); + else if ( m == TQPaintDeviceMetrics::PdmHeight ) { + val = height(); + } else { + Display *dpy = x11Display(); + int scr = x11Screen(); + switch ( m ) { + case TQPaintDeviceMetrics::PdmDpiX: + case TQPaintDeviceMetrics::PdmPhysicalDpiX: + val = TQPaintDevice::x11AppDpiX( scr ); + break; + case TQPaintDeviceMetrics::PdmDpiY: + case TQPaintDeviceMetrics::PdmPhysicalDpiY: + val = TQPaintDevice::x11AppDpiY( scr ); + break; + case TQPaintDeviceMetrics::PdmWidthMM: + val = (DisplayWidthMM(dpy,scr)*width())/ + DisplayWidth(dpy,scr); + break; + case TQPaintDeviceMetrics::PdmHeightMM: + val = (DisplayHeightMM(dpy,scr)*height())/ + DisplayHeight(dpy,scr); + break; + case TQPaintDeviceMetrics::PdmNumColors: + val = 1 << depth(); + break; + case TQPaintDeviceMetrics::PdmDepth: + val = depth(); + break; + default: + val = 0; +#if defined(TQT_CHECK_RANGE) + qWarning( "TQPixmap::metric: Invalid metric command" ); +#endif + } + } + return val; +} + +/*! + Converts the pixmap to a TQImage. Returns a null image if it fails. + + If the pixmap has 1-bit depth, the returned image will also be 1 + bit deep. If the pixmap has 2- to 8-bit depth, the returned image + has 8-bit depth. If the pixmap has greater than 8-bit depth, the + returned image has 32-bit depth. + + Note that for the moment, alpha masks on monochrome images are + ignored. + + \sa convertFromImage() +*/ + +TQImage TQPixmap::convertToImage() const +{ + TQImage image; + if ( isNull() ) + return image; // null image + + int w = width(); + int h = height(); + int d = depth(); + bool mono = d == 1; + Visual *visual = (Visual *)x11Visual(); + bool trucol = (visual->c_class == TrueColor || visual->c_class == DirectColor) && !mono && d > 8; + + if ( d > 1 && d <= 8 ) // set to nearest valid depth + d = 8; // 2..8 ==> 8 + // we could run into the situation where d == 8 AND trucol is true, which can + // cause problems when converting to and from images. in this case, always treat + // the depth as 32... from Klaus Schmidinger and qt-bugs/arc-15/31333. + if ( d > 8 || trucol ) + d = 32; // > 8 ==> 32 + + XImage *xi = (XImage *)data->ximage; // any cached ximage? + if ( !xi ) // fetch data from X server + xi = XGetImage( x11Display(), hd, 0, 0, w, h, AllPlanes, + mono ? XYPixmap : ZPixmap ); + TQ_CHECK_PTR( xi ); + if (!xi) + return image; // null image + + TQImage::Endian bitOrder = TQImage::IgnoreEndian; + if ( mono ) { + bitOrder = xi->bitmap_bit_order == LSBFirst ? + TQImage::LittleEndian : TQImage::BigEndian; + } + image.create( w, h, d, 0, bitOrder ); + if ( image.isNull() ) // could not create image + return image; + + const TQPixmap* msk = tqmask(); + const TQPixmap *alf = data->alphapm; + + TQImage alpha; + if (alf) { + XImage *axi = XGetImage(x11Display(), alf->hd, 0, 0, w, h, AllPlanes, ZPixmap); + + if (axi) { + image.setAlphaBuffer( TRUE ); + alpha.create(w, h, 8); + + // copy each scanline + char *src = axi->data; + int bpl = TQMIN(alpha.bytesPerLine(), axi->bytes_per_line); + for (int y = 0; y < h; y++ ) { + memcpy( alpha.scanLine(y), src, bpl ); + src += axi->bytes_per_line; + } + + qSafeXDestroyImage( axi ); + } + } else if (msk) { + image.setAlphaBuffer( TRUE ); + alpha = msk->convertToImage(); + } + bool ale = alpha.bitOrder() == TQImage::LittleEndian; + + if ( trucol ) { // truecolor + const uint red_mask = (uint)visual->red_mask; + const uint green_mask = (uint)visual->green_mask; + const uint blue_mask = (uint)visual->blue_mask; + const int red_shift = highest_bit( red_mask ) - 7; + const int green_shift = highest_bit( green_mask ) - 7; + const int blue_shift = highest_bit( blue_mask ) - 7; + + const uint red_bits = n_bits( red_mask ); + const uint green_bits = n_bits( green_mask ); + const uint blue_bits = n_bits( blue_mask ); + + static uint red_table_bits = 0; + static uint green_table_bits = 0; + static uint blue_table_bits = 0; + + if ( red_bits < 8 && red_table_bits != red_bits) { + build_scale_table( &red_scale_table, red_bits ); + red_table_bits = red_bits; + } + if ( blue_bits < 8 && blue_table_bits != blue_bits) { + build_scale_table( &blue_scale_table, blue_bits ); + blue_table_bits = blue_bits; + } + if ( green_bits < 8 && green_table_bits != green_bits) { + build_scale_table( &green_scale_table, green_bits ); + green_table_bits = green_bits; + } + + int r, g, b; + + TQRgb *dst; + uchar *src; + uint pixel; + int bppc = xi->bits_per_pixel; + + if ( bppc > 8 && xi->byte_order == LSBFirst ) + bppc++; + + for ( int y=0; y<h; y++ ) { + uchar* asrc = alf || msk ? alpha.scanLine( y ) : 0; + dst = (TQRgb *)image.scanLine( y ); + src = (uchar *)xi->data + xi->bytes_per_line*y; + for ( int x=0; x<w; x++ ) { + switch ( bppc ) { + case 8: + pixel = *src++; + break; + case 16: // 16 bit MSB + pixel = src[1] | (ushort)src[0] << 8; + src += 2; + break; + case 17: // 16 bit LSB + pixel = src[0] | (ushort)src[1] << 8; + src += 2; + break; + case 24: // 24 bit MSB + pixel = src[2] | (ushort)src[1] << 8 | + (uint)src[0] << 16; + src += 3; + break; + case 25: // 24 bit LSB + pixel = src[0] | (ushort)src[1] << 8 | + (uint)src[2] << 16; + src += 3; + break; + case 32: // 32 bit MSB + pixel = src[3] | (ushort)src[2] << 8 | + (uint)src[1] << 16 | (uint)src[0] << 24; + src += 4; + break; + case 33: // 32 bit LSB + pixel = src[0] | (ushort)src[1] << 8 | + (uint)src[2] << 16 | (uint)src[3] << 24; + src += 4; + break; + default: // should not really happen + x = w; // leave loop + y = h; + pixel = 0; // eliminate compiler warning +#if defined(TQT_CHECK_RANGE) + qWarning( "TQPixmap::convertToImage: Invalid depth %d", + bppc ); +#endif + } + if ( red_shift > 0 ) + r = (pixel & red_mask) >> red_shift; + else + r = (pixel & red_mask) << -red_shift; + if ( green_shift > 0 ) + g = (pixel & green_mask) >> green_shift; + else + g = (pixel & green_mask) << -green_shift; + if ( blue_shift > 0 ) + b = (pixel & blue_mask) >> blue_shift; + else + b = (pixel & blue_mask) << -blue_shift; + + if ( red_bits < 8 ) + r = red_scale_table[r]; + if ( green_bits < 8 ) + g = green_scale_table[g]; + if ( blue_bits < 8 ) + b = blue_scale_table[b]; + + if (alf) { + *dst++ = tqRgba(r, g, b, asrc[x]); + } else if (msk) { + if ( ale ) { + *dst++ = (asrc[x >> 3] & (1 << (x & 7))) + ? tqRgba(r, g, b, 0xff) : tqRgba(r, g, b, 0x00); + } else { + *dst++ = (asrc[x >> 3] & (1 << (7 -(x & 7)))) + ? tqRgba(r, g, b, 0xff) : tqRgba(r, g, b, 0x00); + } + } else { + *dst++ = tqRgb(r, g, b); + } + } + } + } else if ( xi->bits_per_pixel == d ) { // compatible depth + char *xidata = xi->data; // copy each scanline + int bpl = TQMIN(image.bytesPerLine(),xi->bytes_per_line); + for ( int y=0; y<h; y++ ) { + memcpy( image.scanLine(y), xidata, bpl ); + xidata += xi->bytes_per_line; + } + } else { + /* Typically 2 or 4 bits display depth */ +#if defined(TQT_CHECK_RANGE) + qWarning( "TQPixmap::convertToImage: Display not supported (bpp=%d)", + xi->bits_per_pixel ); +#endif + image.reset(); + return image; + } + + if ( mono ) { // bitmap + image.setNumColors( 2 ); + image.setColor( 0, tqRgb(255,255,255) ); + image.setColor( 1, tqRgb(0,0,0) ); + } else if ( !trucol ) { // pixmap with colormap + register uchar *p; + uchar *end; + uchar use[256]; // pixel-in-use table + uchar pix[256]; // pixel translation table + int ncols, i, bpl; + memset( use, 0, 256 ); + memset( pix, 0, 256 ); + bpl = image.bytesPerLine(); + + if (msk) { // which pixels are used? + for ( i=0; i<h; i++ ) { + uchar* asrc = alpha.scanLine( i ); + p = image.scanLine( i ); + for ( int x = 0; x < w; x++ ) { + if ( ale ) { + if (asrc[x >> 3] & (1 << (x & 7))) + use[*p] = 1; + } else { + if (asrc[x >> 3] & (1 << (7 -(x & 7)))) + use[*p] = 1; + } + ++p; + } + } + } else { + for ( i=0; i<h; i++ ) { + p = image.scanLine( i ); + end = p + bpl; + while ( p < end ) + use[*p++] = 1; + } + } + ncols = 0; + for ( i=0; i<256; i++ ) { // build translation table + if ( use[i] ) + pix[i] = ncols++; + } + for ( i=0; i<h; i++ ) { // translate pixels + p = image.scanLine( i ); + end = p + bpl; + while ( p < end ) { + *p = pix[*p]; + p++; + } + } + + Colormap cmap = x11Colormap(); + int ncells = x11Cells(); + XColor *carr = new XColor[ncells]; + for ( i=0; i<ncells; i++ ) + carr[i].pixel = i; + // Get default colormap + XQueryColors( x11Display(), cmap, carr, ncells ); + + if (msk) { + int trans; + if (ncols < 256) { + trans = ncols++; + image.setNumColors( ncols ); // create color table + image.setColor( trans, 0x00000000 ); + } else { + image.setNumColors( ncols ); // create color table + // oh dear... no spare "transtqparent" pixel. + // use first pixel in image (as good as any). + trans = image.scanLine( i )[0]; + } + for ( i=0; i<h; i++ ) { + uchar* asrc = alpha.scanLine( i ); + p = image.scanLine( i ); + for ( int x = 0; x < w; x++ ) { + if ( ale ) { + if (!(asrc[x >> 3] & (1 << (x & 7)))) + *p = trans; + } else { + if (!(asrc[x >> 3] & (1 << (7 -(x & 7))))) + *p = trans; + } + ++p; + } + } + } else { + image.setNumColors( ncols ); // create color table + } + int j = 0; + for ( i=0; i<256; i++ ) { // translate pixels + if ( use[i] ) { + image.setColor( j++, + ( msk ? 0xff000000 : 0 ) + | tqRgb( (carr[i].red >> 8) & 255, + (carr[i].green >> 8) & 255, + (carr[i].blue >> 8) & 255 ) ); + } + } + + delete [] carr; + } + if ( data->optim != BestOptim ) { // throw away image data + qSafeXDestroyImage( xi ); + ((TQPixmap*)this)->data->ximage = 0; + } else // keep ximage data + ((TQPixmap*)this)->data->ximage = xi; + + return image; +} + + +/*! + Converts image \a img and sets this pixmap. Returns TRUE if + successful; otherwise returns FALSE. + + The \a conversion_flags argument is a bitwise-OR of the + \l{TQt::ImageConversionFlags}. Passing 0 for \a conversion_flags + sets all the default options. + + Note that even though a TQPixmap with depth 1 behaves much like a + TQBitmap, isTQBitmap() returns FALSE. + + If a pixmap with depth 1 is painted with color0 and color1 and + converted to an image, the pixels painted with color0 will produce + pixel index 0 in the image and those painted with color1 will + produce pixel index 1. + + \sa convertToImage(), isTQBitmap(), TQImage::convertDepth(), + defaultDepth(), TQImage::hasAlphaBuffer() +*/ + +bool TQPixmap::convertFromImage( const TQImage &img, int conversion_flags ) +{ + if ( img.isNull() ) { +#if defined(TQT_CHECK_NULL) + qWarning( "TQPixmap::convertFromImage: Cannot convert a null image" ); +#endif + return FALSE; + } + detach(); // detach other references + TQImage image = img; + const uint w = image.width(); + const uint h = image.height(); + int d = image.depth(); + const int dd = x11Depth(); + bool force_mono = (dd == 1 || isTQBitmap() || + (conversion_flags & ColorMode_Mask)==MonoOnly ); + + if ( w >= 32768 || h >= 32768 ) + return FALSE; + + // get rid of the tqmask + delete data->tqmask; + data->tqmask = 0; + + // get rid of alpha pixmap + delete data->alphapm; + data->alphapm = 0; + + // must be monochrome + if ( force_mono ) { + if ( d != 1 ) { + // dither + image = image.convertDepth( 1, conversion_flags ); + d = 1; + } + } else { // can be both + bool conv8 = FALSE; + if ( d > 8 && dd <= 8 ) { // convert to 8 bit + if ( (conversion_flags & DitherMode_Mask) == AutoDither ) + conversion_flags = (conversion_flags & ~DitherMode_Mask) + | PreferDither; + conv8 = TRUE; + } else if ( (conversion_flags & ColorMode_Mask) == ColorOnly ) { + conv8 = d == 1; // native depth wanted + } else if ( d == 1 ) { + if ( image.numColors() == 2 ) { + TQRgb c0 = image.color(0); // Auto: convert to best + TQRgb c1 = image.color(1); + conv8 = TQMIN(c0,c1) != tqRgb(0,0,0) || TQMAX(c0,c1) != tqRgb(255,255,255); + } else { + // eg. 1-color monochrome images (they do exist). + conv8 = TRUE; + } + } + if ( conv8 ) { + image = image.convertDepth( 8, conversion_flags ); + d = 8; + } + } + + if ( d == 1 ) { // 1 bit pixmap (bitmap) + if ( hd ) { // delete old X pixmap + +#ifndef TQT_NO_XFTFREETYPE + if (rendhd) { + XftDrawDestroy( (XftDraw *) rendhd ); + rendhd = 0; + } +#endif // TQT_NO_XFTFREETYPE + + XFreePixmap( x11Display(), hd ); + } + + // make sure image.color(0) == color0 (white) and image.color(1) == color1 (black) + if (image.color(0) == TQt::black.rgb() && image.color(1) == TQt::white.rgb()) { + image.invertPixels(); + image.setColor(0, TQt::white.rgb()); + image.setColor(1, TQt::black.rgb()); + } + + char *bits; + uchar *tmp_bits; + int bpl = (w+7)/8; + int ibpl = image.bytesPerLine(); + if ( image.bitOrder() == TQImage::BigEndian || bpl != ibpl ) { + tmp_bits = new uchar[bpl*h]; + TQ_CHECK_PTR( tmp_bits ); + bits = (char *)tmp_bits; + uchar *p, *b, *end; + uint y, count; + if ( image.bitOrder() == TQImage::BigEndian ) { + const uchar *f = qt_get_bitflip_array(); + b = tmp_bits; + for ( y=0; y<h; y++ ) { + p = image.scanLine( y ); + end = p + bpl; + count = bpl; + while ( count > 4 ) { + *b++ = f[*p++]; + *b++ = f[*p++]; + *b++ = f[*p++]; + *b++ = f[*p++]; + count -= 4; + } + while ( p < end ) + *b++ = f[*p++]; + } + } else { // just copy + b = tmp_bits; + p = image.scanLine( 0 ); + for ( y=0; y<h; y++ ) { + memcpy( b, p, bpl ); + b += bpl; + p += ibpl; + } + } + } else { + bits = (char *)image.bits(); + tmp_bits = 0; + } + hd = (HANDLE)XCreateBitmapFromData( x11Display(), + RootWindow(x11Display(), x11Screen() ), + bits, w, h ); + +#ifndef TQT_NO_XFTFREETYPE + if ( qt_has_xft ) + rendhd = (HANDLE) XftDrawCreateBitmap( x11Display(), hd ); +#endif // TQT_NO_XFTFREETYPE + + if ( tmp_bits ) // Avoid purify complaint + delete [] tmp_bits; + data->w = w; data->h = h; data->d = 1; + + if ( image.hasAlphaBuffer() ) { + TQBitmap m; + m = image.createAlphaMask( conversion_flags ); + setMask( m ); + } + return TRUE; + } + + Display *dpy = x11Display(); + Visual *visual = (Visual *)x11Visual(); + XImage *xi = 0; + bool trucol = (visual->c_class == TrueColor || visual->c_class == DirectColor); + int nbytes = image.numBytes(); + uchar *newbits= 0; + + if ( trucol ) { // truecolor display + TQRgb pix[256]; // pixel translation table + const bool d8 = d == 8; + const uint red_mask = (uint)visual->red_mask; + const uint green_mask = (uint)visual->green_mask; + const uint blue_mask = (uint)visual->blue_mask; + const int red_shift = highest_bit( red_mask ) - 7; + const int green_shift = highest_bit( green_mask ) - 7; + const int blue_shift = highest_bit( blue_mask ) - 7; + const uint rbits = highest_bit(red_mask) - lowest_bit(red_mask) + 1; + const uint gbits = highest_bit(green_mask) - lowest_bit(green_mask) + 1; + const uint bbits = highest_bit(blue_mask) - lowest_bit(blue_mask) + 1; + + if ( d8 ) { // setup pixel translation + TQRgb *ctable = image.colorTable(); + for ( int i=0; i<image.numColors(); i++ ) { + int r = tqRed (ctable[i]); + int g = tqGreen(ctable[i]); + int b = tqBlue (ctable[i]); + r = red_shift > 0 ? r << red_shift : r >> -red_shift; + g = green_shift > 0 ? g << green_shift : g >> -green_shift; + b = blue_shift > 0 ? b << blue_shift : b >> -blue_shift; + pix[i] = (b & blue_mask) | (g & green_mask) | (r & red_mask) + | ~(blue_mask | green_mask | red_mask); + } + } + + xi = XCreateImage( dpy, visual, dd, ZPixmap, 0, 0, w, h, 32, 0 ); + TQ_CHECK_PTR( xi ); + if (!xi) + return false; + newbits = (uchar *)malloc( xi->bytes_per_line*h ); + TQ_CHECK_PTR( newbits ); + if ( !newbits ) // no memory + return FALSE; + int bppc = xi->bits_per_pixel; + + if ( bppc > 8 && xi->byte_order == LSBFirst ) + bppc++; + + bool contig_bits = n_bits(red_mask) == rbits && + n_bits(green_mask) == gbits && + n_bits(blue_mask) == bbits; + bool dither_tc = + // Want it? + (conversion_flags & Dither_Mask) != ThresholdDither && + (conversion_flags & DitherMode_Mask) != AvoidDither && + // Need it? + bppc < 24 && !d8 && + // Can do it? (Contiguous bits?) + contig_bits; + + static bool init=FALSE; + static int D[16][16]; + if ( dither_tc && !init ) { + // I also contributed this code to XV - WWA. + /* + The dither matrix, D, is obtained with this formula: + + D2 = [ 0 2 ] + [ 3 1 ] + + + D2*n = [ 4*Dn 4*Dn+2*Un ] + [ 4*Dn+3*Un 4*Dn+1*Un ] + */ + int n,i,j; + init=1; + + /* Set D2 */ + D[0][0]=0; + D[1][0]=2; + D[0][1]=3; + D[1][1]=1; + + /* Expand using recursive definition given above */ + for (n=2; n<16; n*=2) { + for (i=0; i<n; i++) { + for (j=0; j<n; j++) { + D[i][j]*=4; + D[i+n][j]=D[i][j]+2; + D[i][j+n]=D[i][j]+3; + D[i+n][j+n]=D[i][j]+1; + } + } + } + init=TRUE; + } + + for ( uint y=0; y<h; y++ ) { + uchar* src = image.scanLine( y ); + uchar* dst = newbits + xi->bytes_per_line*y; + TQRgb* p = (TQRgb *)src; + +#define GET_RGB \ + int r = tqRed ( *p ); \ + int g = tqGreen( *p ); \ + int b = tqBlue ( *p++ ); \ + r = red_shift > 0 \ + ? r << red_shift : r >> -red_shift; \ + g = green_shift > 0 \ + ? g << green_shift : g >> -green_shift; \ + b = blue_shift > 0 \ + ? b << blue_shift : b >> -blue_shift; + +#define GET_PIXEL \ + int pixel; \ + if ( d8 ) pixel = pix[*src++]; \ + else { \ + GET_RGB \ + pixel = (b & blue_mask)|(g & green_mask) | (r & red_mask) \ + | ~(blue_mask | green_mask | red_mask); \ + } + +#define GET_PIXEL_DITHER_TC \ + int r = tqRed ( *p ); \ + int g = tqGreen( *p ); \ + int b = tqBlue ( *p++ ); \ + const int thres = D[x%16][y%16]; \ + if ( r <= (255-(1<<(8-rbits))) && ((r<<rbits) & 255) \ + > thres) \ + r += (1<<(8-rbits)); \ + if ( g <= (255-(1<<(8-gbits))) && ((g<<gbits) & 255) \ + > thres) \ + g += (1<<(8-gbits)); \ + if ( b <= (255-(1<<(8-bbits))) && ((b<<bbits) & 255) \ + > thres) \ + b += (1<<(8-bbits)); \ + r = red_shift > 0 \ + ? r << red_shift : r >> -red_shift; \ + g = green_shift > 0 \ + ? g << green_shift : g >> -green_shift; \ + b = blue_shift > 0 \ + ? b << blue_shift : b >> -blue_shift; \ + int pixel = (b & blue_mask)|(g & green_mask) | (r & red_mask); + + if ( dither_tc ) { + uint x; + switch ( bppc ) { + case 16: // 16 bit MSB + for ( x=0; x<w; x++ ) { + GET_PIXEL_DITHER_TC + *dst++ = (pixel >> 8); + *dst++ = pixel; + } + break; + case 17: // 16 bit LSB + for ( x=0; x<w; x++ ) { + GET_PIXEL_DITHER_TC + *dst++ = pixel; + *dst++ = pixel >> 8; + } + break; + default: + qFatal("Logic error"); + } + } else { + uint x; + switch ( bppc ) { + case 8: // 8 bit + for ( x=0; x<w; x++ ) { + int pixel = pix[*src++]; + *dst++ = pixel; + } + break; + case 16: // 16 bit MSB + for ( x=0; x<w; x++ ) { + GET_PIXEL + *dst++ = (pixel >> 8); + *dst++ = pixel; + } + break; + case 17: // 16 bit LSB + for ( x=0; x<w; x++ ) { + GET_PIXEL + *dst++ = pixel; + *dst++ = pixel >> 8; + } + break; + case 24: // 24 bit MSB + for ( x=0; x<w; x++ ) { + GET_PIXEL + *dst++ = pixel >> 16; + *dst++ = pixel >> 8; + *dst++ = pixel; + } + break; + case 25: // 24 bit LSB + for ( x=0; x<w; x++ ) { + GET_PIXEL + *dst++ = pixel; + *dst++ = pixel >> 8; + *dst++ = pixel >> 16; + } + break; + case 32: // 32 bit MSB + for ( x=0; x<w; x++ ) { + GET_PIXEL + *dst++ = pixel >> 24; + *dst++ = pixel >> 16; + *dst++ = pixel >> 8; + *dst++ = pixel; + } + break; + case 33: // 32 bit LSB + for ( x=0; x<w; x++ ) { + GET_PIXEL + *dst++ = pixel; + *dst++ = pixel >> 8; + *dst++ = pixel >> 16; + *dst++ = pixel >> 24; + } + break; + default: + qFatal("Logic error 2"); + } + } + } + xi->data = (char *)newbits; + } + + if ( d == 8 && !trucol ) { // 8 bit pixmap + int pop[256]; // pixel popularity + + if ( image.numColors() == 0 ) + image.setNumColors( 1 ); + + memset( pop, 0, sizeof(int)*256 ); // reset popularity array + uint i; + for ( i=0; i<h; i++ ) { // for each scanline... + uchar* p = image.scanLine( i ); + uchar *end = p + w; + while ( p < end ) // compute popularity + pop[*p++]++; + } + + newbits = (uchar *)malloc( nbytes ); // copy image into newbits + TQ_CHECK_PTR( newbits ); + if ( !newbits ) // no memory + return FALSE; + uchar* p = newbits; + memcpy( p, image.bits(), nbytes ); // copy image data into newbits + + /* + * The code below picks the most important colors. It is based on the + * diversity algorithm, implemented in XV 3.10. XV is (C) by John Bradley. + */ + + struct PIX { // pixel sort element + uchar r,g,b,n; // color + pad + int use; // popularity + int index; // index in colormap + int mindist; + }; + int ncols = 0; + for ( i=0; i< (uint) image.numColors(); i++ ) { // compute number of colors + if ( pop[i] > 0 ) + ncols++; + } + for ( i=image.numColors(); i<256; i++ ) // ignore out-of-range pixels + pop[i] = 0; + + // works since we make sure above to have at least + // one color in the image + if ( ncols == 0 ) + ncols = 1; + + PIX pixarr[256]; // pixel array + PIX pixarr_sorted[256]; // pixel array (sorted) + memset( pixarr, 0, ncols*sizeof(PIX) ); + PIX *px = &pixarr[0]; + int maxpop = 0; + int maxpix = 0; + TQ_CHECK_PTR( pixarr ); + uint j = 0; + TQRgb* ctable = image.colorTable(); + for ( i=0; i<256; i++ ) { // init pixel array + if ( pop[i] > 0 ) { + px->r = tqRed ( ctable[i] ); + px->g = tqGreen( ctable[i] ); + px->b = tqBlue ( ctable[i] ); + px->n = 0; + px->use = pop[i]; + if ( pop[i] > maxpop ) { // select most popular entry + maxpop = pop[i]; + maxpix = j; + } + px->index = i; + px->mindist = 1000000; + px++; + j++; + } + } + pixarr_sorted[0] = pixarr[maxpix]; + pixarr[maxpix].use = 0; + + for ( i=1; i< (uint) ncols; i++ ) { // sort pixels + int minpix = -1, mindist = -1; + px = &pixarr_sorted[i-1]; + int r = px->r; + int g = px->g; + int b = px->b; + int dist; + if ( (i & 1) || i<10 ) { // sort on max distance + for ( int j=0; j<ncols; j++ ) { + px = &pixarr[j]; + if ( px->use ) { + dist = (px->r - r)*(px->r - r) + + (px->g - g)*(px->g - g) + + (px->b - b)*(px->b - b); + if ( px->mindist > dist ) + px->mindist = dist; + if ( px->mindist > mindist ) { + mindist = px->mindist; + minpix = j; + } + } + } + } else { // sort on max popularity + for ( int j=0; j<ncols; j++ ) { + px = &pixarr[j]; + if ( px->use ) { + dist = (px->r - r)*(px->r - r) + + (px->g - g)*(px->g - g) + + (px->b - b)*(px->b - b); + if ( px->mindist > dist ) + px->mindist = dist; + if ( px->use > mindist ) { + mindist = px->use; + minpix = j; + } + } + } + } + pixarr_sorted[i] = pixarr[minpix]; + pixarr[minpix].use = 0; + } + + uint pix[256]; // pixel translation table + px = &pixarr_sorted[0]; + for ( i=0; i< (uint) ncols; i++ ) { // allocate colors + TQColor c( px->r, px->g, px->b ); + pix[px->index] = c.pixel(x11Screen()); + px++; + } + + p = newbits; + for ( i=0; i< (uint) nbytes; i++ ) { // translate pixels + *p = pix[*p]; + p++; + } + } + + if ( !xi ) { // X image not created + xi = XCreateImage( dpy, visual, dd, ZPixmap, 0, 0, w, h, 32, 0 ); + if ( xi->bits_per_pixel == 16 ) { // convert 8 bpp ==> 16 bpp + ushort *p2; + int p2inc = xi->bytes_per_line/sizeof(ushort); + ushort *newerbits = (ushort *)malloc( xi->bytes_per_line * h ); + TQ_CHECK_PTR( newerbits ); + if ( !newerbits ) // no memory + return FALSE; + uchar* p = newbits; + for ( uint y=0; y<h; y++ ) { // OOPS: Do right byte order!! + p2 = newerbits + p2inc*y; + for ( uint x=0; x<w; x++ ) + *p2++ = *p++; + } + free( newbits ); + newbits = (uchar *)newerbits; + } else if ( xi->bits_per_pixel != 8 ) { +#if defined(TQT_CHECK_RANGE) + qWarning( "TQPixmap::convertFromImage: Display not supported " + "(bpp=%d)", xi->bits_per_pixel ); +#endif + } + xi->data = (char *)newbits; + } + + if ( hd && (width() != (int)w || height() != (int)h || this->depth() != dd) ) { + +#ifndef TQT_NO_XFTFREETYPE + if (rendhd) { + XftDrawDestroy( (XftDraw *) rendhd ); + rendhd = 0; + } +#endif // TQT_NO_XFTFREETYPE + + XFreePixmap( dpy, hd ); // don't reuse old pixmap + hd = 0; + } + if ( !hd ) { // create new pixmap + hd = (HANDLE)XCreatePixmap( x11Display(), + RootWindow(x11Display(), x11Screen() ), + w, h, dd ); + +#ifndef TQT_NO_XFTFREETYPE + if ( qt_has_xft ) { + if ( data->d == 1 ) { + rendhd = (HANDLE) XftDrawCreateBitmap( x11Display (), hd ); + } else { + rendhd = (HANDLE) XftDrawCreate( x11Display (), hd, + (Visual *) x11Visual(), x11Colormap() ); + } + } +#endif // TQT_NO_XFTFREETYPE + + } + + XPutImage( dpy, hd, qt_xget_readonly_gc( x11Screen(), FALSE ), + xi, 0, 0, 0, 0, w, h ); + + if ( data->optim != BestOptim ) { // throw away image + qSafeXDestroyImage( xi ); + data->ximage = 0; + } else { // keep ximage that we created + data->ximage = xi; + } + data->w = w; + data->h = h; + data->d = dd; + + if ( image.hasAlphaBuffer() ) { + TQBitmap m; + m = image.createAlphaMask( conversion_flags ); + setMask( m ); + +#ifndef TQT_NO_XFTFREETYPE + // does this image have an alphamap (and not just a 1bpp tqmask)? + bool alphamap = image.depth() == 32; + if (image.depth() == 8) { + const TQRgb * const rgb = image.colorTable(); + for (int i = 0, count = image.numColors(); i < count; ++i) { + const int alpha = tqAlpha(rgb[i]); + if (alpha != 0 && alpha != 0xff) { + alphamap = TRUE; + break; + } + } + } + + if (qt_use_xrender && qt_has_xft && alphamap) { + data->alphapm = new TQPixmap; // create a null pixmap + + // setup pixmap data + data->alphapm->data->w = w; + data->alphapm->data->h = h; + data->alphapm->data->d = 8; + + // create 8bpp pixmap and render picture + data->alphapm->hd = + XCreatePixmap(x11Display(), RootWindow(x11Display(), x11Screen()), + w, h, 8); + + data->alphapm->rendhd = + (HANDLE) XftDrawCreateAlpha( x11Display(), data->alphapm->hd, 8 ); + + XImage *axi = XCreateImage(x11Display(), (Visual *) x11Visual(), + 8, ZPixmap, 0, 0, w, h, 8, 0); + + if (axi) { + // the data is deleted by qSafeXDestroyImage + axi->data = (char *) malloc(h * axi->bytes_per_line); + TQ_CHECK_PTR( axi->data ); + char *aptr = axi->data; + + if (image.depth() == 32) { + const int *iptr = (const int *) image.bits(); + int max = w * h; + while (max--) + *aptr++ = *iptr++ >> 24; // squirt + } else if (image.depth() == 8) { + const TQRgb * const rgb = image.colorTable(); + for (uint y = 0; y < h; ++y) { + const uchar *iptr = image.scanLine(y); + for (uint x = 0; x < w; ++x) + *aptr++ = tqAlpha(rgb[*iptr++]); + } + } + + GC gc = XCreateGC(x11Display(), data->alphapm->hd, 0, 0); + XPutImage(dpy, data->alphapm->hd, gc, axi, 0, 0, 0, 0, w, h); + XFreeGC(x11Display(), gc); + qSafeXDestroyImage(axi); + } + } +#endif // TQT_NO_XFTFREETYPE + } + + return TRUE; +} + + +/*! + Grabs the contents of the window \a window and makes a pixmap out + of it. Returns the pixmap. + + The arguments \a (x, y) specify the offset in the window, whereas + \a (w, h) specify the width and height of the area to be copied. + + If \a w is negative, the function copies everything to the right + border of the window. If \a h is negative, the function copies + everything to the bottom of the window. + + Note that grabWindow() grabs pixels from the screen, not from the + window. If there is another window partially or entirely over the + one you grab, you get pixels from the overlying window, too. + + Note also that the mouse cursor is generally not grabbed. + + The reason we use a window identifier and not a TQWidget is to + enable grabbing of windows that are not part of the application, + window system frames, and so on. + + \warning Grabbing an area outside the screen is not safe in + general. This depends on the underlying window system. + + \warning X11 only: If \a window is not the same depth as the root + window and another window partially or entirely obscures the one + you grab, you will \e not get pixels from the overlying window. + The contests of the obscured areas in the pixmap are undefined and + uninitialized. + + \sa grabWidget() +*/ + +TQPixmap TQPixmap::grabWindow( WId window, int x, int y, int w, int h ) +{ + if ( w == 0 || h == 0 ) + return TQPixmap(); + + Display *dpy = x11AppDisplay(); + XWindowAttributes window_attr; + if ( ! XGetWindowAttributes( dpy, window, &window_attr ) ) + return TQPixmap(); + + if ( w < 0 ) + w = window_attr.width - x; + if ( h < 0 ) + h = window_attr.height - y; + + // determine the screen + int scr; + for ( scr = 0; scr < ScreenCount( dpy ); ++scr ) { + if ( window_attr.root == RootWindow( dpy, scr ) ) // found it + break; + } + if ( scr >= ScreenCount( dpy ) ) // sanity check + return TQPixmap(); + + + // get the depth of the root window + XWindowAttributes root_attr; + if ( ! XGetWindowAttributes( dpy, window_attr.root, &root_attr ) ) + return TQPixmap(); + + if ( window_attr.depth == root_attr.depth ) { + // if the depth of the specified window and the root window are the + // same, grab pixels from the root window (so that we get the any + // overlapping windows and window manager frames) + + // map x and y to the root window + WId unused; + if ( ! XTranslateCoordinates( dpy, window, window_attr.root, x, y, + &x, &y, &unused ) ) + return TQPixmap(); + + window = window_attr.root; + } + + TQPixmap pm( w, h ); + pm.data->uninit = FALSE; + pm.x11SetScreen( scr ); + + GC gc = qt_xget_temp_gc( scr, FALSE ); + XSetSubwindowMode( dpy, gc, IncludeInferiors ); + XCopyArea( dpy, window, pm.handle(), gc, x, y, w, h, 0, 0 ); + XSetSubwindowMode( dpy, gc, ClipByChildren ); + + return pm; +} + +/*! + Returns a copy of the pixmap that is transformed using \a matrix. + The original pixmap is not changed. + + The transformation \a matrix is internally adjusted to compensate + for unwanted translation, i.e. xForm() returns the smallest image + that tqcontains all the transformed points of the original image. + + This function is slow because it involves transformation to a + TQImage, non-trivial computations and a transformation back to a + TQPixmap. + + \sa trueMatrix(), TQWMatrix, TQPainter::setWorldMatrix() TQImage::xForm() +*/ + +TQPixmap TQPixmap::xForm( const TQWMatrix &matrix ) const +{ + uint w = 0; + uint h = 0; // size of target pixmap + uint ws, hs; // size of source pixmap + uchar *dptr; // data in target pixmap + uint dbpl, dbytes; // bytes per line/bytes total + uchar *sptr; // data in original pixmap + int sbpl; // bytes per line in original + int bpp; // bits per pixel + bool depth1 = depth() == 1; + Display *dpy = x11Display(); + + if ( isNull() ) // this is a null pixmap + return copy(); + + ws = width(); + hs = height(); + + TQWMatrix mat( matrix.m11(), matrix.m12(), matrix.m21(), matrix.m22(), 0., 0. ); + + double scaledWidth; + double scaledHeight; + + if ( matrix.m12() == 0.0F && matrix.m21() == 0.0F ) { + if ( matrix.m11() == 1.0F && matrix.m22() == 1.0F ) + return *this; // identity matrix + scaledHeight = matrix.m22()*hs; + scaledWidth = matrix.m11()*ws; + h = TQABS( tqRound( scaledHeight ) ); + w = TQABS( tqRound( scaledWidth ) ); + } else { // rotation or shearing + TQPointArray a( TQRect(0,0,ws+1,hs+1) ); + a = mat.map( a ); + TQRect r = a.boundingRect().normalize(); + w = r.width()-1; + h = r.height()-1; + scaledWidth = w; + scaledHeight = h; + } + + mat = trueMatrix( mat, ws, hs ); // true matrix + + + bool invertible; + mat = mat.invert( &invertible ); // invert matrix + + if ( h == 0 || w == 0 || !invertible + || TQABS(scaledWidth) >= 32768 || TQABS(scaledHeight) >= 32768 ) { // error, return null pixmap + TQPixmap pm; + pm.data->bitmap = data->bitmap; + return pm; + } + +#if defined(TQT_MITSHM) + static bool try_once = TRUE; + if (try_once) { + try_once = FALSE; + if ( !xshminit ) + qt_create_mitshm_buffer( this, 800, 600 ); + } + + bool use_mitshm = xshmimg && !depth1 && + xshmimg->width >= w && xshmimg->height >= h; +#endif + XImage *xi = (XImage*)data->ximage; // any cached ximage? + if ( !xi ) + xi = XGetImage( x11Display(), handle(), 0, 0, ws, hs, AllPlanes, + depth1 ? XYPixmap : ZPixmap ); + + if ( !xi ) { // error, return null pixmap + TQPixmap pm; + pm.data->bitmap = data->bitmap; + pm.data->alphapm = data->alphapm; + return pm; + } + + sbpl = xi->bytes_per_line; + sptr = (uchar *)xi->data; + bpp = xi->bits_per_pixel; + + if ( depth1 ) + dbpl = (w+7)/8; + else + dbpl = ((w*bpp+31)/32)*4; + dbytes = dbpl*h; + +#if defined(TQT_MITSHM) + if ( use_mitshm ) { + dptr = (uchar *)xshmimg->data; + uchar fillbyte = bpp == 8 ? white.pixel() : 0xff; + for ( int y=0; y<h; y++ ) + memset( dptr + y*xshmimg->bytes_per_line, fillbyte, dbpl ); + } else { +#endif + dptr = (uchar *)malloc( dbytes ); // create buffer for bits + TQ_CHECK_PTR( dptr ); + if ( depth1 ) // fill with zeros + memset( dptr, 0, dbytes ); + else if ( bpp == 8 ) // fill with background color + memset( dptr, TQt::white.pixel( x11Screen() ), dbytes ); + else + memset( dptr, 0xff, dbytes ); +#if defined(TQT_MITSHM) + } +#endif + + // #define TQT_DEBUG_XIMAGE +#if defined(TQT_DEBUG_XIMAGE) + qDebug( "----IMAGE--INFO--------------" ); + qDebug( "width............. %d", xi->width ); + qDebug( "height............ %d", xi->height ); + qDebug( "xoffset........... %d", xi->xoffset ); + qDebug( "format............ %d", xi->format ); + qDebug( "byte order........ %d", xi->byte_order ); + qDebug( "bitmap unit....... %d", xi->bitmap_unit ); + qDebug( "bitmap bit order.. %d", xi->bitmap_bit_order ); + qDebug( "depth............. %d", xi->depth ); + qDebug( "bytes per line.... %d", xi->bytes_per_line ); + qDebug( "bits per pixel.... %d", xi->bits_per_pixel ); +#endif + + int type; + if ( xi->bitmap_bit_order == MSBFirst ) + type = TQT_XFORM_TYPE_MSBFIRST; + else + type = TQT_XFORM_TYPE_LSBFIRST; + int xbpl, p_inc; + if ( depth1 ) { + xbpl = (w+7)/8; + p_inc = dbpl - xbpl; + } else { + xbpl = (w*bpp)/8; + p_inc = dbpl - xbpl; +#if defined(TQT_MITSHM) + if ( use_mitshm ) + p_inc = xshmimg->bytes_per_line - xbpl; +#endif + } + + if ( !qt_xForm_helper( mat, xi->xoffset, type, bpp, dptr, xbpl, p_inc, h, sptr, sbpl, ws, hs ) ){ +#if defined(TQT_CHECK_RANGE) + qWarning( "TQPixmap::xForm: display not supported (bpp=%d)",bpp); +#endif + TQPixmap pm; + return pm; + } + + if ( data->optim == NoOptim ) { // throw away ximage + qSafeXDestroyImage( xi ); + data->ximage = 0; + } else { // keep ximage that we fetched + data->ximage = xi; + } + + if ( depth1 ) { // mono bitmap + TQPixmap pm( w, h, dptr, TQImage::systemBitOrder() != TQImage::BigEndian ); + pm.data->bitmap = data->bitmap; + free( dptr ); + if ( data->tqmask ) { + if ( data->selfmask ) // pixmap == tqmask + pm.setMask( *((TQBitmap*)(&pm)) ); + else + pm.setMask( data->tqmask->xForm(matrix) ); + } + return pm; + } else { // color pixmap + GC gc = qt_xget_readonly_gc( x11Screen(), FALSE ); + TQPixmap pm( w, h ); + pm.data->uninit = FALSE; + pm.x11SetScreen( x11Screen() ); +#if defined(TQT_MITSHM) + if ( use_mitshm ) { + XCopyArea( dpy, xshmpm, pm.handle(), gc, 0, 0, w, h, 0, 0 ); + } else { +#endif + xi = XCreateImage( dpy, (Visual *)x11Visual(), x11Depth(), + ZPixmap, 0, (char *)dptr, w, h, 32, 0 ); + XPutImage( dpy, pm.handle(), gc, xi, 0, 0, 0, 0, w, h); + qSafeXDestroyImage( xi ); +#if defined(TQT_MITSHM) + } +#endif + + if ( data->tqmask ) // xform tqmask, too + pm.setMask( data->tqmask->xForm(matrix) ); + +#ifndef TQT_NO_XFTFREETYPE + if ( qt_use_xrender && qt_has_xft && data->alphapm ) { // xform the alpha channel + XImage *axi = 0; + if ((axi = XGetImage(x11Display(), data->alphapm->handle(), + 0, 0, ws, hs, AllPlanes, ZPixmap))) { + sbpl = axi->bytes_per_line; + sptr = (uchar *) axi->data; + bpp = axi->bits_per_pixel; + dbytes = dbpl * h; + dptr = (uchar *) malloc(dbytes); + TQ_CHECK_PTR( dptr ); + memset(dptr, 0, dbytes); + if ( axi->bitmap_bit_order == MSBFirst ) + type = TQT_XFORM_TYPE_MSBFIRST; + else + type = TQT_XFORM_TYPE_LSBFIRST; + + if (qt_xForm_helper( mat, axi->xoffset, type, bpp, dptr, w, + 0, h, sptr, sbpl, ws, hs )) { + delete pm.data->alphapm; + pm.data->alphapm = new TQPixmap; // create a null pixmap + + // setup pixmap data + pm.data->alphapm->data->w = w; + pm.data->alphapm->data->h = h; + pm.data->alphapm->data->d = 8; + + // create 8bpp pixmap and render picture + pm.data->alphapm->hd = + XCreatePixmap(x11Display(), + RootWindow(x11Display(), x11Screen()), + w, h, 8); + + pm.data->alphapm->rendhd = + (HANDLE) XftDrawCreateAlpha( x11Display(), + pm.data->alphapm->hd, 8 ); + + XImage *axi2 = XCreateImage(x11Display(), (Visual *) x11Visual(), + 8, ZPixmap, 0, (char *)dptr, w, h, 8, 0); + + if (axi2) { + // the data is deleted by qSafeXDestroyImage + GC gc = XCreateGC(x11Display(), pm.data->alphapm->hd, 0, 0); + XPutImage(dpy, pm.data->alphapm->hd, gc, axi2, 0, 0, 0, 0, w, h); + XFreeGC(x11Display(), gc); + qSafeXDestroyImage(axi2); + } + } + qSafeXDestroyImage(axi); + } + } +#endif // TQT_NO_XFTFREETYPE + + return pm; + } +} + + +/*! + \internal +*/ +int TQPixmap::x11SetDefaultScreen( int screen ) +{ + int old = defaultScreen; + defaultScreen = screen; + return old; +} + +/*! + \internal +*/ +void TQPixmap::x11SetScreen( int screen ) +{ + if ( screen < 0 ) + screen = x11AppScreen(); + + if ( screen == x11Screen() ) + return; // nothing to do + + if ( isNull() ) { + TQPaintDeviceX11Data* xd = getX11Data( TRUE ); + xd->x_screen = screen; + xd->x_depth = TQPaintDevice::x11AppDepth( screen ); + xd->x_cells = TQPaintDevice::x11AppCells( screen ); + xd->x_colormap = TQPaintDevice::x11AppColormap( screen ); + xd->x_defcolormap = TQPaintDevice::x11AppDefaultColormap( screen ); + xd->x_visual = TQPaintDevice::x11AppVisual( screen ); + xd->x_defvisual = TQPaintDevice::x11AppDefaultVisual( screen ); + setX11Data( xd ); + return; + } +#if 0 + qDebug("TQPixmap::x11SetScreen for %p from %d to %d. Size is %d/%d", data, x11Screen(), screen, width(), height() ); +#endif + + TQImage img = convertToImage(); + resize(0,0); + TQPaintDeviceX11Data* xd = getX11Data( TRUE ); + xd->x_screen = screen; + xd->x_depth = TQPaintDevice::x11AppDepth( screen ); + xd->x_cells = TQPaintDevice::x11AppCells( screen ); + xd->x_colormap = TQPaintDevice::x11AppColormap( screen ); + xd->x_defcolormap = TQPaintDevice::x11AppDefaultColormap( screen ); + xd->x_visual = TQPaintDevice::x11AppVisual( screen ); + xd->x_defvisual = TQPaintDevice::x11AppDefaultVisual( screen ); + setX11Data( xd ); + convertFromImage( img ); +} + +/*! + Returns TRUE this pixmap has an alpha channel or a tqmask. + + \sa hasAlphaChannel() tqmask() +*/ +bool TQPixmap::hasAlpha() const +{ + return data->alphapm || data->tqmask; +} + +/*! + Returns TRUE if the pixmap has an alpha channel; otherwise it + returns FALSE. + + NOTE: If the pixmap has a tqmask but not alpha channel, this + function returns FALSE. + + \sa hasAlpha() tqmask() +*/ +bool TQPixmap::hasAlphaChannel() const +{ + return data->alphapm != 0; +} + +/*! + \relates TQPixmap + + Copies a block of pixels from \a src to \a dst. The alpha channel + and tqmask data (if any) is also copied from \a src. NOTE: \a src + is \e not alpha blended or masked when copied to \a dst. Use + bitBlt() or TQPainter::drawPixmap() to perform alpha blending or + masked drawing. + + \a sx, \a sy is the top-left pixel in \a src (0, 0 by default), \a + dx, \a dy is the top-left position in \a dst and \a sw, \sh is the + size of the copied block (all of \a src by default). + + If \a src, \a dst, \a sw or \a sh is 0 (zero), copyBlt() does + nothing. If \a sw or \a sh is negative, copyBlt() copies starting + at \a sx (and respectively, \a sy) and ending at the right edge + (and respectively, the bottom edge) of \a src. + + copyBlt() does nothing if \a src and \a dst have different depths. +*/ +TQ_EXPORT void copyBlt( TQPixmap *dst, int dx, int dy, + const TQPixmap *src, int sx, int sy, int sw, int sh ) +{ + if ( ! dst || ! src || sw == 0 || sh == 0 || dst->depth() != src->depth() ) { +#ifdef TQT_CHECK_NULL + TQ_ASSERT( dst != 0 ); + TQ_ASSERT( src != 0 ); +#endif + return; + } + + // copy pixel data + bitBlt( dst, dx, dy, src, sx, sy, sw, sh, TQt::CopyROP, TRUE ); + + // copy tqmask data + if ( src->data->tqmask ) { + if ( ! dst->data->tqmask ) { + dst->data->tqmask = new TQBitmap( dst->width(), dst->height() ); + + // new masks are fully opaque by default + dst->data->tqmask->fill( TQt::color1 ); + } + + bitBlt( dst->data->tqmask, dx, dy, + src->data->tqmask, sx, sy, sw, sh, TQt::CopyROP, TRUE ); + } + +#ifndef TQT_NO_XFTFREETYPE + // copy alpha data + extern bool qt_use_xrender; // from qapplication_x11.cpp + if ( ! qt_use_xrender || ! src->data->alphapm ) + return; + + if ( sw < 0 ) + sw = src->width() - sx; + else + sw = TQMIN( src->width()-sx, sw ); + sw = TQMIN( dst->width()-dx, sw ); + + if ( sh < 0 ) + sh = src->height() - sy ; + else + sh = TQMIN( src->height()-sy, sh ); + sh = TQMIN( dst->height()-dy, sh ); + + if ( sw <= 0 || sh <= 0 ) + return; + + // create an alpha pixmap for dst if it doesn't exist + bool do_init = FALSE; + if ( ! dst->data->alphapm ) { + dst->data->alphapm = new TQPixmap; + + // setup pixmap d + dst->data->alphapm->data->w = dst->width(); + dst->data->alphapm->data->h = dst->height(); + dst->data->alphapm->data->d = 8; + + // create 8bpp pixmap and render picture + dst->data->alphapm->hd = + XCreatePixmap(dst->x11Display(), + RootWindow(dst->x11Display(), dst->x11Screen()), + dst->width(), dst->height(), 8); + + // new alpha pixmaps should be fully opaque by default + do_init = TRUE; + + dst->data->alphapm->rendhd = + (TQt::HANDLE) XftDrawCreateAlpha( dst->x11Display(), + dst->data->alphapm->hd, 8 ); + } + + GC gc = XCreateGC(dst->x11Display(), dst->data->alphapm->hd, 0, 0); + + if ( do_init ) { + // the alphapm was just created, make it fully opaque + XSetForeground( dst->x11Display(), gc, 255 ); + XSetBackground( dst->x11Display(), gc, 255 ); + XFillRectangle( dst->x11Display(), dst->data->alphapm->hd, gc, + 0, 0, dst->data->alphapm->data->w, + dst->data->alphapm->data->h ); + } + + XCopyArea(dst->x11Display(), src->data->alphapm->hd, dst->data->alphapm->hd, gc, + sx, sy, sw, sh, dx, dy); + XFreeGC(dst->x11Display(), gc); +#endif // TQT_NO_XFTFREETYPE +} + +#endif // USE_QT4
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