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/*
Copyright (C) 2003 Nikolas Zimmermann <wildfox@kde.org>
This file is part of the KDE project
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
aint 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.
*/
#include <iostream>
#include <kdebug.h>
#include "Glyph.h"
#include "Point.h"
#include "BezierPathLibart.h"
#include "GlyphTracerLibart.h"
#include <libart_lgpl/art_bpath.h>
#include <config.h>
#ifdef HAVE_FREETYPE_2_2_x
#define FT_VECTOR_PARAMETER const FT_Vector
#else
#define FT_VECTOR_PARAMETER FT_Vector
#endif
using namespace T2P;
int traceMoveto(FT_VECTOR_PARAMETER *to, void *obj)
{
Glyph *glyph = reinterpret_cast<Glyph *>(obj);
Affine &affine = glyph->affine();
BezierPathLibart *path = static_cast<BezierPathLibart *>(glyph->modifiableBezierPath());
Point p = affine.mapPoint(Point(to->x, to->y));
int index = path->m_array.count();
if(index == 0 ||
p.x() != path->m_array[index - 1].x3 ||
p.y() != path->m_array[index - 1].y3)
{
path->m_array.resize(index + 1);
path->m_array[index].code = ART_MOVETO;
path->m_array[index].x3 = p.x();
path->m_array[index].y3 = p.y();
}
return 0;
}
int traceLineto(FT_VECTOR_PARAMETER *to, void *obj)
{
Glyph *glyph = reinterpret_cast<Glyph *>(obj);
Affine &affine = glyph->affine();
BezierPathLibart *path = static_cast<BezierPathLibart *>(glyph->modifiableBezierPath());
Point p = affine.mapPoint(Point(to->x, to->y));
int index = path->m_array.count();
ArtBpath *last = &path->m_array[index - 1];
if((p.x() != last->x3) || (p.y() != last->y3))
{
path->m_array.resize(index + 1);
path->m_array[index].code = ART_LINETO;
path->m_array[index].x3 = p.x();
path->m_array[index].y3 = p.y();
}
return 0;
}
int traceConicBezier(FT_VECTOR_PARAMETER *control, FT_VECTOR_PARAMETER *to, void *obj)
{
Glyph *glyph = reinterpret_cast<Glyph *>(obj);
Affine &affine = glyph->affine();
BezierPathLibart *path = static_cast<BezierPathLibart *>(glyph->modifiableBezierPath());
int index = path->m_array.count();
if(!(index > 0))
return -1;
path->m_array.resize(index + 1);
ArtBpath *s = &path->m_array[index - 1];
ArtBpath *e = &path->m_array[index];
e->code = ART_CURVETO;
Point c = affine.mapPoint(Point(control->x, control->y));
Point p = affine.mapPoint(Point(to->x, to->y));
e->x3 = p.x();
e->y3 = p.y();
path->m_array[index].x1 = c.x() - (c.x() - s->x3) / 3;
path->m_array[index].y1 = c.y() - (c.y() - s->y3) / 3;
path->m_array[index].x2 = c.x() + (e->x3 - c.x()) / 3;
path->m_array[index].y2 = c.y() + (e->y3 - c.y()) / 3;
return 0;
}
int traceCubicBezier(FT_VECTOR_PARAMETER *control1, FT_VECTOR_PARAMETER *control2, FT_VECTOR_PARAMETER *to, void *obj)
{
Glyph *glyph = reinterpret_cast<Glyph *>(obj);
Affine &affine = glyph->affine();
BezierPathLibart *path = static_cast<BezierPathLibart *>(glyph->modifiableBezierPath());
Point p = affine.mapPoint(Point(to->x, to->y));
Point c1 = affine.mapPoint(Point(control1->x, control1->y));
Point c2 = affine.mapPoint(Point(control2->x, control2->y));
int index = path->m_array.count();
path->m_array.resize(index + 1);
path->m_array[index].code = ART_CURVETO;
path->m_array[index].x1 = c1.x();
path->m_array[index].y1 = c1.y();
path->m_array[index].x2 = c2.x();
path->m_array[index].y2 = c2.y();
path->m_array[index].x3 = p.x();
path->m_array[index].y3 = p.y();
return 0;
}
GlyphTracerLibart::GlyphTracerLibart() : GlyphTracer()
{
setMoveto(*traceMoveto);
setLineto(*traceLineto);
setConicBezier(*traceConicBezier);
setCubicBezier(*traceCubicBezier);
}
GlyphTracerLibart::~GlyphTracerLibart()
{
}
void GlyphTracerLibart::correctGlyph(GlyphAffinePair *glyphAffine)
{
// Take bezier path belonging to glyph (Note: that one is _UNMODIFIABLE_, once calculated)
const BezierPathLibart *path = static_cast<const BezierPathLibart *>(glyphAffine->glyph()->bezierPath());
// Create a new empty path with the same size
ArtBpath *transformed = art_bpath_affine_transform(path->m_array.data(), glyphAffine->affine().data());
BezierPathLibart *transformatedPath = new BezierPathLibart(transformed);
art_free(transformed);
glyphAffine->setTransformatedPath(transformatedPath);
}
BezierPath *GlyphTracerLibart::allocBezierPath(int)
{
BezierPathLibart *bpath = new BezierPathLibart();
//if(size != 0)
// bpath->m_array.resize(size);
return bpath;
}
void GlyphTracerLibart::closePath(Glyph *glyph)
{
BezierPathLibart *path = static_cast<BezierPathLibart *>(glyph->modifiableBezierPath());
int index = path->m_array.count();
path->m_array.resize(index + 1);
path->m_array[index].code = ART_END;
}
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