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tdegraphics/ksvg/plugin/backends/libart/LibartCanvasItems.cpp

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/*
Copyright (C) 2001-2003 KSVG Team
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 <cfloat>
#include <tqimage.h>
#include <tqwmatrix.h>
#include "SVGPaint.h"
#include "SVGRectImpl.h"
#include "SVGAngleImpl.h"
#include "SVGPaintImpl.h"
#include "SVGUnitTypes.h"
#include "SVGHelperImpl.h"
#include "SVGDocumentImpl.h"
#include "SVGPointListImpl.h"
#include "SVGMarkerElement.h"
#include "SVGMarkerElementImpl.h"
#include "SVGSVGElementImpl.h"
#include "SVGPathSegListImpl.h"
#include "SVGAnimatedRectImpl.h"
#include "SVGAnimatedStringImpl.h"
#include "SVGImageElementImpl.h"
#include "SVGAnimatedAngleImpl.h"
#include "SVGAnimatedLengthImpl.h"
#include "SVGPolygonElementImpl.h"
#include "SVGClipPathElementImpl.h"
#include "SVGPolylineElementImpl.h"
#include "SVGAnimatedLengthListImpl.h"
#include "SVGAnimatedNumberImpl.h"
#include "SVGAnimatedEnumerationImpl.h"
#include "SVGPreserveAspectRatioImpl.h"
#include "SVGAnimatedPreserveAspectRatioImpl.h"
#include "SVGGradientElementImpl.h"
#include "SVGGradientElement.h"
#include "SVGLinearGradientElementImpl.h"
#include "SVGRadialGradientElementImpl.h"
#include "SVGPatternElementImpl.h"
#include "SVGPatternElement.h"
#include "SVGStopElementImpl.h"
#include "SVGStylableImpl.h"
#include "SVGAnimatedTransformListImpl.h"
#include "SVGTransformListImpl.h"
#include "SVGUnitConverter.h"
#include "SVGTextPathElementImpl.h"
#include "SVGMaskElementImpl.h"
#include "KSVGHelper.h"
#include "LibartCanvasItems.h"
#include "KSVGTextChunk.h"
#include "art_misc.h"
#include "art_render_misc.h"
#include "BezierPathLibart.h"
#include "Point.h"
#include <dom/dom_node.h>
#include <libart_lgpl/art_vpath.h>
#include <libart_lgpl/art_bpath.h>
#include <libart_lgpl/art_affine.h>
#include <libart_lgpl/art_svp_ops.h>
#include <libart_lgpl/art_svp_point.h>
#include <libart_lgpl/art_vpath_svp.h>
#include <libart_lgpl/art_svp_intersect.h>
#include <libart_lgpl/art_svp_vpath.h>
#include <libart_lgpl/art_svp_vpath_stroke.h>
#include <libart_lgpl/art_rect_svp.h>
#include <libart_lgpl/art_vpath_dash.h>
#include <libart_lgpl/art_render.h>
#include <libart_lgpl/art_rect_svp.h>
#include <libart_lgpl/art_render_gradient.h>
#include <libart_lgpl/art_render_svp.h>
#include <libart_lgpl/art_render_mask.h>
using namespace KSVG;
LibartShape::LibartShape(LibartCanvas *c, SVGStylableImpl *style) : m_canvas(c), m_style(style)
{
m_fillSVP = 0;
m_strokeSVP = 0;
m_fillPainter = 0;
m_strokePainter = 0;
}
LibartShape::~LibartShape()
{
freeSVPs();
delete m_fillPainter;
delete m_strokePainter;
}
TQRect LibartShape::bbox() const
{
TQRect rect;
if(m_strokeSVP || m_fillSVP)
{
ArtIRect *irect = new ArtIRect();
ArtVpath *vpath = art_vpath_from_svp(m_strokeSVP ? m_strokeSVP : m_fillSVP);
art_vpath_bbox_irect(vpath, irect);
art_free(vpath);
rect.setX(irect->x0);
rect.setY(irect->y0);
rect.setWidth(irect->x1 - irect->x0);
rect.setHeight(irect->y1 - irect->y0);
delete irect;
}
return rect;
}
bool LibartShape::isVisible(SVGShapeImpl *shape)
{
return m_referenced || (m_style->getVisible() && m_style->getDisplay() && shape->directRender());
}
bool LibartShape::fillContains(const TQPoint &p)
{
if(m_fillSVP)
return art_svp_point_wind(m_fillSVP, p.x(), p.y()) != 0;
else
return false;
}
bool LibartShape::strokeContains(const TQPoint &p)
{
if(m_strokeSVP)
return art_svp_point_wind(m_strokeSVP, p.x(), p.y()) != 0;
else
return false;
}
void LibartShape::update(CanvasItemUpdate reason, int param1, int param2)
{
if(reason == UPDATE_STYLE)
{
if(!m_fillPainter || !m_strokePainter)
LibartShape::init();
if(m_fillPainter)
m_fillPainter->update(m_style);
if(m_strokePainter)
m_strokePainter->update(m_style);
m_canvas->invalidate(this, false);
}
else if(reason == UPDATE_TRANSFORM)
{
reset();
m_canvas->invalidate(this, true);
}
else if(reason == UPDATE_ZOOM)
reset();
else if(reason == UPDATE_PAN)
{
if(m_fillSVP)
ksvg_art_svp_move(m_fillSVP, param1, param2);
if(m_strokeSVP)
ksvg_art_svp_move(m_strokeSVP, param1, param2);
}
else if(reason == UPDATE_LINEWIDTH)
{
if(m_strokeSVP)
{
art_svp_free(m_strokeSVP);
m_strokeSVP = 0;
}
init();
m_canvas->invalidate(this, true);
}
}
void LibartShape::draw(SVGShapeImpl *shape)
{
if(!m_referenced && (!m_style->getVisible() || !m_style->getDisplay() || !shape->directRender()))
return;
bool fillOk = m_fillSVP && m_style->isFilled();
bool strokeOk = m_strokeSVP && m_style->isStroked() && m_style->getStrokeWidth()->baseVal()->value() > 0; // Spec: A zero value causes no stroke to be painted.
if(fillOk || strokeOk)
{
if(m_fillPainter && m_fillSVP)
m_fillPainter->draw(m_canvas, m_fillSVP, m_style, shape);
if(m_strokePainter && m_strokeSVP)
m_strokePainter->draw(m_canvas, m_strokeSVP, m_style, shape);
}
}
void LibartShape::init(const SVGMatrixImpl *)
{
}
void LibartPainter::update(SVGStylableImpl *style)
{
if(paintType(style) != SVG_PAINTTYPE_URI)
{
TQColor qcolor;
if(paintType(style) == SVG_PAINTTYPE_CURRENTCOLOR)
qcolor = style->getColor()->rgbColor().color();
else
qcolor = color(style);
short _opacity = static_cast<short>(opacity(style) * 255 + 0.5);
// Spec: clamping
_opacity = _opacity < 0 ? 0 : _opacity;
_opacity = _opacity > 255 ? 255 : _opacity;
m_color = KSVGHelper::toArtColor(qcolor, _opacity);
}
}
void LibartPainter::draw(LibartCanvas *canvas, _ArtSVP *svp, SVGStylableImpl *style, SVGShapeImpl *shape)
{
ArtSVP *clippedSvp = canvas->clipSingleSVP(svp, shape);
// Clipping
ArtDRect bbox;
art_drect_svp(&bbox, clippedSvp);
// clamp to viewport
int x0 = int(bbox.x0);
int y0 = int(bbox.y0);
// Use inclusive coords for x1/y1 for clipToBuffer
int x1 = int(ceil(bbox.x1)) - 1;
int y1 = int(ceil(bbox.y1)) - 1;
if(x0 < int(canvas->width()) && y0 < int(canvas->height()) && x1 > -1 && y1 > -1)
{
canvas->clipToBuffer(x0, y0, x1, y1);
TQRect screenBBox(x0, y0, x1 - x0 + 1, y1 - y0 + 1);
TQByteArray mask = SVGMaskElementImpl::maskRectangle(shape, screenBBox);
if(paintType(style) == SVG_PAINTTYPE_URI)
{
LibartPaintServer *pserver = static_cast<LibartPaintServer *>(SVGPaintServerImpl::paintServer(shape->ownerDoc(), paintUri(style)));
if(pserver)
{
pserver->setBBoxTarget(shape);
if(!pserver->finalized())
pserver->finalizePaintServer();
pserver->render(canvas, clippedSvp, opacity(style), mask, screenBBox);
}
}
else
canvas->drawSVP(clippedSvp, m_color, mask, screenBBox);
}
art_svp_free(clippedSvp);
}
LibartStrokePainter::LibartStrokePainter(SVGStylableImpl *style)
{
update(style);
}
LibartFillPainter::LibartFillPainter(SVGStylableImpl *style)
{
update(style);
}
void LibartShape::init()
{
if(m_style->isFilled())
{
if(m_fillPainter == 0)
m_fillPainter = new LibartFillPainter(m_style);
}
else
{
delete m_fillPainter;
m_fillPainter = 0;
}
// Spec: A zero value causes no stroke to be painted.
if(m_style->isStroked() && m_style->getStrokeWidth()->baseVal()->value() > 0)
{
if(m_strokePainter == 0)
m_strokePainter = new LibartStrokePainter(m_style);
}
else
{
delete m_strokePainter;
m_strokePainter = 0;
}
}
void LibartShape::initClipItem()
{
init();
}
ArtSVP *LibartShape::clipSVP()
{
return m_fillSVP;
}
void LibartShape::freeSVPs()
{
if(m_fillSVP)
art_svp_free(m_fillSVP);
if(m_strokeSVP)
art_svp_free(m_strokeSVP);
m_fillSVP = 0;
m_strokeSVP = 0;
}
void LibartShape::calcClipSVP(ArtVpath *vec, SVGStylableImpl *style, const SVGMatrixImpl *matrix, _ArtSVP **clipSVP)
{
double affine[6];
KSVGHelper::matrixToAffine(matrix, affine);
if(!style)
{
art_free(vec);
return;
}
ArtVpath *vtemp = art_vpath_affine_transform(vec, affine);
art_free(vec);
vec = vtemp;
ArtSVP *temp;
ArtSvpWriter *swr;
temp = art_svp_from_vpath(vec);
if(style->getClipRule() == RULE_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);
*clipSVP = art_svp_writer_rewind_reap(swr);
art_svp_free(temp);
art_free(vec);
}
void LibartShape::calcSVPs(ArtVpath *vec, SVGStylableImpl *style, const SVGMatrixImpl *matrix, ArtSVP **strokeSVP, ArtSVP **fillSVP)
{
if(style)
{
double affine[6];
KSVGHelper::matrixToAffine(matrix, affine);
ArtVpath *temp = art_vpath_affine_transform(vec, affine);
art_free(vec);
vec = temp;
calcSVPInternal(vec, style, affine, strokeSVP, fillSVP);
}
else
art_free(vec);
}
void LibartShape::calcSVPs(ArtBpath *bpath, SVGStylableImpl *style, const SVGMatrixImpl *matrix, ArtSVP **strokeSVP, ArtSVP **fillSVP)
{
if(style)
{
double affine[6];
KSVGHelper::matrixToAffine(matrix, affine);
ArtBpath *temp = art_bpath_affine_transform(bpath, affine);
ArtVpath *vec = ksvg_art_bez_path_to_vec(temp, 0.25);
art_free(temp);
calcSVPInternal(vec, style, affine, strokeSVP, fillSVP);
}
}
void LibartShape::calcSVPInternal(ArtVpath *vec, SVGStylableImpl *style, double *affine, ArtSVP **strokeSVP, ArtSVP **fillSVP)
{
ArtSVP *svp;
// Filling
{
ArtSvpWriter *swr;
ArtSVP *temp;
temp = art_svp_from_vpath(vec);
if(style->getFillRule() == RULE_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);
svp = art_svp_writer_rewind_reap(swr);
*fillSVP = svp;
art_svp_free(temp);
}
// Stroking
if(style->isStroked() || style->getStrokeColor()->paintType() == SVG_PAINTTYPE_URI)
{
double ratio = art_affine_expansion(affine);
unsigned int dashLength;
if(style->getDashArray() && (dashLength = style->getDashArray()->baseVal()->numberOfItems()) > 0)
{
// HACK: libart will hang in art_vpath_dash() if passed an array with only zeroes.
bool allZeroes = true;
// there are dashes to be rendered
ArtVpathDash dash;
dash.offset = int(style->getDashOffset()->baseVal()->value()) * ratio;
dash.n_dash = dashLength;
double *dashes = new double[dashLength];
for(unsigned int i = 0; i < dashLength; i++)
{
dashes[i] = style->getDashArray()->baseVal()->getItem(i)->value() * ratio;
if(dashes[i] != 0.0)
allZeroes = false;
}
dash.dash = dashes;
if(!allZeroes)
{
// get the dashed VPath and use that for the stroke render operation
ArtVpath *vec2 = art_vpath_dash(vec, &dash);
art_free(vec);
vec = vec2;
}
// reset the dashes
delete [] dashes;
}
double penWidth = style->getStrokeWidth()->baseVal()->value() * ratio;
svp = art_svp_vpath_stroke(vec, (ArtPathStrokeJoinType)style->getJoinStyle(), (ArtPathStrokeCapType)style->getCapStyle(), penWidth, style->getStrokeMiterlimit(), 0.25);
*strokeSVP = svp;
}
art_free(vec);
}
// #####
LibartRectangle::LibartRectangle(LibartCanvas *c, SVGRectElementImpl *rect)
: LibartShape(c, rect), m_rect(rect)
{
init();
}
void LibartRectangle::draw()
{
if(isVisible())
LibartShape::draw(m_rect);
}
bool LibartRectangle::isVisible()
{
// Spec: a value of zero disables rendering
return LibartShape::isVisible(m_rect) && m_rect->width()->baseVal()->value() > 0 && m_rect->height()->baseVal()->value() > 0;
}
void LibartRectangle::init()
{
init(m_rect->screenCTM());
}
void LibartRectangle::init(const SVGMatrixImpl *screenCTM)
{
LibartShape::init();
double x = m_rect->x()->baseVal()->value();
double y = m_rect->y()->baseVal()->value();
double width = m_rect->width()->baseVal()->value();
double height = m_rect->height()->baseVal()->value();
double rx = m_rect->rx()->baseVal()->value();
double ry = m_rect->ry()->baseVal()->value();
// Spec: If there is no rx or ry specified, draw a normal rect
if(rx == -1 && ry == -1)
{
ArtVpath *vec = allocVPath(6);
vec[0].code = ART_MOVETO;
vec[0].x = x;
vec[0].y = y;
vec[1].code = ART_LINETO;
vec[1].x = x;
vec[1].y = y + height;
vec[2].code = ART_LINETO;
vec[2].x = x + width;
vec[2].y = y + height;
vec[3].code = ART_LINETO;
vec[3].x = x + width;
vec[3].y = y;
vec[4].code = ART_LINETO;
vec[4].x = x;
vec[4].y = y;
vec[5].code = ART_END;
if(m_context == NORMAL)
calcSVPs(vec, m_rect, screenCTM, &m_strokeSVP, &m_fillSVP);
else
calcClipSVP(vec, m_rect, screenCTM, &m_fillSVP);
}
else
{
ArtVpath *res;
ArtBpath *vec = allocBPath(10);
int i = 0;
// Spec: If rx isn't specified, but ry, set rx to ry
if(rx == -1)
rx = ry;
// Spec: If ry isn't specified, but rx, set ry to rx
if(ry == -1)
ry = rx;
// Spec: If rx is greater than half of the width of the rectangle
// then set rx to half of the width
if(rx > width / 2)
rx = width / 2;
// Spec: If ry is greater than half of the height of the rectangle
// then set ry to half of the height
if(ry > height / 2)
ry = height / 2;
vec[i].code = ART_MOVETO_OPEN;
vec[i].x3 = x + rx;
vec[i].y3 = y;
i++;
vec[i].code = ART_CURVETO;
vec[i].x1 = x + rx * (1 - 0.552);
vec[i].y1 = y;
vec[i].x2 = x;
vec[i].y2 = y + ry * (1 - 0.552);
vec[i].x3 = x;
vec[i].y3 = y + ry;
i++;
if(ry < height / 2)
{
vec[i].code = ART_LINETO;
vec[i].x3 = x;
vec[i].y3 = y + height - ry;
i++;
}
vec[i].code = ART_CURVETO;
vec[i].x1 = x;
vec[i].y1 = y + height - ry * (1 - 0.552);
vec[i].x2 = x + rx * (1 - 0.552);
vec[i].y2 = y + height;
vec[i].x3 = x + rx;
vec[i].y3 = y + height;
i++;
if(rx < width / 2)
{
vec[i].code = ART_LINETO;
vec[i].x3 = x + width - rx;
vec[i].y3 = y + height;
i++;
}
vec[i].code = ART_CURVETO;
vec[i].x1 = x + width - rx * (1 - 0.552);
vec[i].y1 = y + height;
vec[i].x2 = x + width;
vec[i].y2 = y + height - ry * (1 - 0.552);
vec[i].x3 = x + width;
vec[i].y3 = y + height - ry;
i++;
if(ry < height / 2)
{
vec[i].code = ART_LINETO;
vec[i].x3 = x + width;
vec[i].y3 = y + ry;
i++;
}
vec[i].code = ART_CURVETO;
vec[i].x1 = x + width;
vec[i].y1 = y + ry * (1 - 0.552);
vec[i].x2 = x + width - rx * (1 - 0.552);
vec[i].y2 = y;
vec[i].x3 = x + width - rx;
vec[i].y3 = y;
i++;
if(rx < width / 2)
{
vec[i].code = ART_LINETO;
vec[i].x3 = x + rx;
vec[i].y3 = y;
i++;
}
vec[i].code = ART_END;
res = ksvg_art_bez_path_to_vec(vec, 0.25);
if(m_context == NORMAL)
calcSVPs(res, m_rect, screenCTM, &m_strokeSVP, &m_fillSVP);
else
calcClipSVP(res, m_rect, screenCTM, &m_fillSVP);
art_free(vec);
}
}
// #####
LibartEllipse::LibartEllipse(LibartCanvas *c, SVGEllipseElementImpl *ellipse)
: LibartShape(c, ellipse), m_ellipse(ellipse)
{
init();
}
void LibartEllipse::draw()
{
if(isVisible())
LibartShape::draw(m_ellipse);
}
bool LibartEllipse::isVisible()
{
// Spec: dont render when rx and/or ry is zero
return LibartShape::isVisible(m_ellipse) && m_ellipse->rx()->baseVal()->value() > 0 && m_ellipse->ry()->baseVal()->value() > 0;
}
void LibartEllipse::init()
{
init(m_ellipse->screenCTM());
}
void LibartEllipse::init(const SVGMatrixImpl *screenCTM)
{
LibartShape::init();
ArtBpath *temp = allocBPath(6);
double x1, y1, x2, y2, x3, y3;
double len = 0.55228474983079356;
double rx = m_ellipse->rx()->baseVal()->value();
double ry = m_ellipse->ry()->baseVal()->value();
double cx = m_ellipse->cx()->baseVal()->value();
double cy = m_ellipse->cy()->baseVal()->value();
double cos4[] = {1.0, 0.0, -1.0, 0.0, 1.0};
double sin4[] = {0.0, 1.0, 0.0, -1.0, 0.0};
int i = 0;
temp[i].code = ART_MOVETO;
temp[i].x3 = cx + rx;
temp[i].y3 = cy;
i++;
while(i < 5)
{
x1 = cos4[i-1] + len * cos4[i];
y1 = sin4[i-1] + len * sin4[i];
x2 = cos4[i] + len * cos4[i-1];
y2 = sin4[i] + len * sin4[i-1];
x3 = cos4[i];
y3 = sin4[i];
temp[i].code = ART_CURVETO;
temp[i].x1 = cx + x1 * rx;
temp[i].y1 = cy + y1 * ry;
temp[i].x2 = cx + x2 * rx;
temp[i].y2 = cy + y2 * ry;
temp[i].x3 = cx + x3 * rx;
temp[i].y3 = cy + y3 * ry;
i++;
}
temp[i].code = ART_END;
if(m_context == NORMAL)
calcSVPs(temp, m_ellipse, screenCTM, &m_strokeSVP, &m_fillSVP);
else
calcClipSVP(ksvg_art_bez_path_to_vec(temp, 0.25), m_ellipse, screenCTM, &m_fillSVP);
art_free(temp);
}
// #####
LibartCircle::LibartCircle(LibartCanvas *c, SVGCircleElementImpl *circle)
: LibartShape(c, circle), m_circle(circle)
{
init();
}
void LibartCircle::draw()
{
// Spec: a value of zero disables rendering
if(isVisible())
LibartShape::draw(m_circle);
}
bool LibartCircle::isVisible()
{
// Spec: dont render when rx and/or ry is zero
return LibartShape::isVisible(m_circle) && m_circle->r()->baseVal()->value() > 0;
}
void LibartCircle::init()
{
init(m_circle->screenCTM());
}
void LibartCircle::init(const SVGMatrixImpl *screenCTM)
{
LibartShape::init();
ArtBpath *temp = allocBPath(6);
double x1, y1, x2, y2, x3, y3;
double len = 0.55228474983079356;
double r = m_circle->r()->baseVal()->value();
double cx = m_circle->cx()->baseVal()->value();
double cy = m_circle->cy()->baseVal()->value();
double cos4[] = {1.0, 0.0, -1.0, 0.0, 1.0};
double sin4[] = {0.0, 1.0, 0.0, -1.0, 0.0};
int i = 0;
temp[i].code = ART_MOVETO;
temp[i].x3 = cx + r;
temp[i].y3 = cy;
i++;
while(i < 5)
{
x1 = cos4[i-1] + len * cos4[i];
y1 = sin4[i-1] + len * sin4[i];
x2 = cos4[i] + len * cos4[i-1];
y2 = sin4[i] + len * sin4[i-1];
x3 = cos4[i];
y3 = sin4[i];
temp[i].code = ART_CURVETO;
temp[i].x1 = cx + x1 * r;
temp[i].y1 = cy + y1 * r;
temp[i].x2 = cx + x2 * r;
temp[i].y2 = cy + y2 * r;
temp[i].x3 = cx + x3 * r;
temp[i].y3 = cy + y3 * r;
i++;
}
temp[i].code = ART_END;
if(m_context == NORMAL)
calcSVPs(temp, m_circle, screenCTM, &m_strokeSVP, &m_fillSVP);
else
calcClipSVP(ksvg_art_bez_path_to_vec(temp, 0.25), m_circle, screenCTM, &m_fillSVP);
art_free(temp);
}
// #####
LibartLine::LibartLine(LibartCanvas *c, SVGLineElementImpl *line)
: LibartShape(c, line), MarkerHelper(), m_line(line)
{
init();
}
LibartLine::~LibartLine()
{
}
void LibartLine::draw()
{
LibartShape::draw(m_line);
if(m_line->hasMarkers())
{
double x1 = m_line->x1()->baseVal()->value();
double y1 = m_line->y1()->baseVal()->value();
double x2 = m_line->x2()->baseVal()->value();
double y2 = m_line->y2()->baseVal()->value();
double slope = SVGAngleImpl::todeg(atan2(y2 - y1, x2 - x1));
if(m_line->hasStartMarker())
doStartMarker(m_line, m_line, x1, y1, slope);
if(m_line->hasEndMarker())
doEndMarker(m_line, m_line, x2, y2, slope);
}
}
bool LibartLine::isVisible()
{
return LibartShape::isVisible(m_line);
}
void LibartLine::init()
{
init(m_line->screenCTM());
}
void LibartLine::init(const SVGMatrixImpl *screenCTM)
{
LibartShape::init();
ArtVpath *vec;
vec = allocVPath(3);
vec[0].code = ART_MOVETO_OPEN;
vec[0].x = m_line->x1()->baseVal()->value();
vec[0].y = m_line->y1()->baseVal()->value();
vec[1].code = ART_LINETO;
vec[1].x = m_line->x2()->baseVal()->value();
vec[1].y = m_line->y2()->baseVal()->value();
// A subpath consisting of a moveto and lineto to the same exact location or a subpath consisting of a moveto
// and a closepath will be stroked only if the 'stroke-linecap' property is set to "round", producing a circle
// centered at the given point.
if(vec[1].x == vec[0].x && vec[1].y == vec[0].y && m_line->getCapStyle() == PATH_STROKE_CAP_ROUND)
vec[1].x += .5;
vec[2].code = ART_END;
if(m_context == NORMAL)
{
calcSVPs(vec, m_line, screenCTM, &m_strokeSVP, &m_fillSVP);
art_svp_free(m_fillSVP);
m_fillSVP = 0;
}
else
calcClipSVP(vec, m_line, screenCTM, &m_fillSVP);
}
// #####
LibartPoly::LibartPoly(LibartCanvas *c, SVGPolyElementImpl *poly)
: LibartShape(c, poly), MarkerHelper(), m_poly(poly)
{
}
LibartPoly::~LibartPoly()
{
}
void LibartPoly::init()
{
init(m_poly->screenCTM());
}
void LibartPoly::draw()
{
LibartShape::draw(m_poly);
if(m_poly->hasMarkers())
m_poly->drawMarkers();
}
bool LibartPoly::isVisible()
{
return LibartShape::isVisible(m_poly);
}
// #####
LibartPolyline::LibartPolyline(LibartCanvas *c, SVGPolylineElementImpl *poly)
: LibartPoly(c, poly)
{
LibartPoly::init();
}
LibartPolyline::~LibartPolyline()
{
}
void LibartPolyline::init(const SVGMatrixImpl *screenCTM)
{
LibartShape::init();
unsigned int numberOfPoints = m_poly->points()->numberOfItems();
if(numberOfPoints < 1)
return;
ArtVpath *polyline = allocVPath(2 + numberOfPoints);
polyline[0].code = ART_MOVETO_OPEN;
polyline[0].x = m_poly->points()->getItem(0)->x();
polyline[0].y = m_poly->points()->getItem(0)->y();
unsigned int index;
for(index = 1; index < numberOfPoints; index++)
{
polyline[index].code = ART_LINETO;
polyline[index].x = m_poly->points()->getItem(index)->x();
polyline[index].y = m_poly->points()->getItem(index)->y();
}
// A subpath consisting of a moveto and lineto to the same exact location or a subpath consisting of a moveto
// and a closepath will be stroked only if the 'stroke-linecap' property is set to "round", producing a circle
// centered at the given point.
if(numberOfPoints == 2 && polyline[1].x == polyline[0].x && polyline[1].y == polyline[0].y && m_poly->getCapStyle() == PATH_STROKE_CAP_ROUND)
polyline[1].x += .5;
if(m_poly->isFilled()) // if the polyline must be filled, inform libart that it should not be closed.
{
polyline[index].code = (ArtPathcode) ART_END2;
polyline[index].x = m_poly->points()->getItem(0)->x();
polyline[index++].y = m_poly->points()->getItem(0)->y();
}
polyline[index].code = ART_END;
if(m_context == NORMAL)
calcSVPs(polyline, m_poly, screenCTM, &m_strokeSVP, &m_fillSVP);
else
calcClipSVP(polyline, m_poly, screenCTM, &m_fillSVP);
}
// #####
LibartPolygon::LibartPolygon(LibartCanvas *c, SVGPolygonElementImpl *poly)
: LibartPoly(c, poly)
{
LibartPoly::init();
}
LibartPolygon::~LibartPolygon()
{
}
void LibartPolygon::init(const SVGMatrixImpl *screenCTM)
{
LibartShape::init();
unsigned int numberOfPoints = m_poly->points()->numberOfItems();
if(numberOfPoints < 1)
return;
ArtVpath *polygon = allocVPath(2 + numberOfPoints);
polygon[0].code = ART_MOVETO;
polygon[0].x = m_poly->points()->getItem(0)->x();
polygon[0].y = m_poly->points()->getItem(0)->y();
unsigned int index;
for(index = 1; index < numberOfPoints; index++)
{
polygon[index].code = ART_LINETO;
polygon[index].x = m_poly->points()->getItem(index)->x();
polygon[index].y = m_poly->points()->getItem(index)->y();
}
polygon[index].code = ART_LINETO;
polygon[index].x = m_poly->points()->getItem(0)->x();
polygon[index].y = m_poly->points()->getItem(0)->y();
index++;
polygon[index].code = ART_END;
if(m_context == NORMAL)
calcSVPs(polygon, m_poly, screenCTM, &m_strokeSVP, &m_fillSVP);
else
calcClipSVP(polygon, m_poly, screenCTM, &m_fillSVP);
}
// #####
LibartPath::LibartPath(LibartCanvas *c, SVGPathElementImpl *path)
: LibartShape(c, path), MarkerHelper(), T2P::BezierPathLibart(), ::SVGPathParser(), m_path(path)
{
reset();
}
LibartPath::~LibartPath()
{
}
void LibartPath::reset()
{
m_array.resize(0);
LibartShape::reset();
}
void LibartPath::draw()
{
LibartShape::draw(m_path);
if(m_path->hasMarkers())
{
SVGPathElementImpl::MarkerData markers = m_path->markerData();
int numMarkers = markers.numMarkers();
if(m_path->hasStartMarker())
doStartMarker(m_path, m_path, markers.marker(0).x, markers.marker(0).y, markers.marker(0).angle);
for(int i = 1; i < numMarkers - 1; i++)
{
if(m_path->hasMidMarker())
doMidMarker(m_path, m_path, markers.marker(i).x, markers.marker(i).y, markers.marker(i).angle);
}
if(m_path->hasEndMarker())
doEndMarker(m_path, m_path, markers.marker(numMarkers - 1).x, markers.marker(numMarkers - 1).y, markers.marker(numMarkers - 1).angle);
}
}
bool LibartPath::isVisible()
{
return LibartShape::isVisible(m_path);
}
void LibartPath::init()
{
init(m_path->screenCTM());
}
void LibartPath::init(const SVGMatrixImpl *screenCTM)
{
LibartShape::init();
if(m_array.count() > 0)
{
if(m_context == NORMAL)
calcSVPs(m_array.data(), m_path, screenCTM, &m_strokeSVP, &m_fillSVP);
else
calcClipSVP(ksvg_art_bez_path_to_vec(m_array.data(), 0.25), m_path, screenCTM, &m_fillSVP);
}
else if(!m_path->getAttribute("d").string().isEmpty())
{
parseSVG(m_path->getAttribute("d").string(), true);
int index = m_array.count();
double curx = m_array[index - 1].x3;
double cury = m_array[index - 1].y3;
// Find last subpath
int find = -1;
for(int i = index - 1; i >= 0; i--)
{
if(m_array[i].code == ART_MOVETO_OPEN || m_array[i].code == ART_MOVETO)
{
find = i;
break;
}
}
// Fix a problem where the .svg file used floats as values... (sofico.svg)
if(curx != m_array[find].x3 && cury != m_array[find].y3)
{
if((int) curx == (int) m_array[find].x3 && (int) cury == (int) m_array[find].y3)
{
ensureSpace(m_array, index)
m_array[index].code = ART_LINETO;
m_array[index].x3 = m_array[find].x3;
m_array[index].y3 = m_array[find].y3;
curx = m_array[find].x3;
cury = m_array[find].y3;
index++;
}
}
// handle filled paths that are not closed explicitly
if(m_path->getFillColor()->paintType() != SVG_PAINTTYPE_NONE)
{
if((int) curx != (int) m_array[find].x3 || (int) cury != (int) m_array[find].y3)
{
ensureSpace(m_array, index)
m_array[index].code = (ArtPathcode)ART_END2;
m_array[index].x3 = m_array[find].x3;
m_array[index].y3 = m_array[find].y3;
curx = m_array[find].x3;
cury = m_array[find].y3;
index++;
}
}
// close
ensureSpace(m_array, index)
m_array[index].code = ART_END;
// A subpath consisting of a moveto and lineto to the same exact location or a subpath consisting of a moveto
// and a closepath will be stroked only if the 'stroke-linecap' property is set to "round", producing a circle
// centered at the given point.
if(index == 2 && m_array[1].code == ART_LINETO && m_array[1].x3 == m_array[0].x3 && m_array[1].y3 == m_array[0].y3 && m_path->getCapStyle() == PATH_STROKE_CAP_ROUND)
m_array[1].x3 += .5;
// There are pure-moveto paths which reference paint servers *bah*
// Do NOT render them
bool render = false;
for(int i = index; i >= 0; i--)
{
if(m_array[i].code != ART_MOVETO_OPEN && m_array[i].code != ART_MOVETO && !(m_array[i].code >= ART_END))
{
render = true;
break;
}
}
if(render && m_context == NORMAL)
calcSVPs(m_array.data(), m_path, screenCTM, &m_strokeSVP, &m_fillSVP);
else
calcClipSVP(ksvg_art_bez_path_to_vec(m_array.data(), 0.25), m_path, screenCTM, &m_fillSVP);
}
}
void LibartPath::svgMoveTo(double x1, double y1, bool closed, bool)
{
int index = m_array.count();
if(index > 0 && !closed)
{
// Find last subpath
int find = -1;
for(int i = index - 1; i >= 0; i--)
{
if(m_array[i].code == ART_MOVETO_OPEN || m_array[i].code == ART_MOVETO)
{
find = i;
break;
}
}
ensureSpace(m_array, index)
m_array[index].code = (ArtPathcode) ART_END2;
m_array[index].x3 = m_array[find].x3;
m_array[index].y3 = m_array[find].y3;
index++;
}
ensureSpace(m_array, index)
m_array[index].code = (index == 0) ? ART_MOVETO : ART_MOVETO_OPEN;
m_array[index].x3 = x1;
m_array[index].y3 = y1;
}
void LibartPath::svgLineTo(double x1, double y1, bool)
{
int index = m_array.count();
ensureSpace(m_array, index)
m_array[index].code = ART_LINETO;
m_array[index].x3 = x1;
m_array[index].y3 = y1;
}
void LibartPath::svgCurveToCubic(double x1, double y1, double x2, double y2, double x3, double y3, bool)
{
int index = m_array.count();
ensureSpace(m_array, index)
m_array[index].code = ART_CURVETO;
m_array[index].x1 = x1;
m_array[index].y1 = y1;
m_array[index].x2 = x2;
m_array[index].y2 = y2;
m_array[index].x3 = x3;
m_array[index].y3 = y3;
}
void LibartPath::svgClosePath()
{
int index = m_array.count();
double curx = m_array[index - 1].x3;
double cury = m_array[index - 1].y3;
int find = -1;
for(int i = index - 1; i >= 0; i--)
{
if(m_array[i].code == ART_MOVETO_OPEN || m_array[i].code == ART_MOVETO)
{
find = i;
break;
}
}
if(find != -1)
{
if(m_array[find].x3 != curx || m_array[find].y3 != cury)
{
ensureSpace(m_array, index)
m_array[index].code = ART_LINETO;
m_array[index].x3 = m_array[find].x3;
m_array[index].y3 = m_array[find].y3;
}
}
}
// #####
LibartClipPath::LibartClipPath(LibartCanvas *c, SVGClipPathElementImpl *clipPath)
: CanvasClipPath(clipPath), m_canvas(c)
{
m_clipSVP = 0;
m_clipItems.setAutoDelete(true);
}
LibartClipPath::~LibartClipPath()
{
if(m_clipSVP)
art_svp_free(m_clipSVP);
}
void LibartClipPath::update(CanvasItemUpdate, int, int)
{
if(m_clipSVP)
art_svp_free(m_clipSVP);
m_clipSVP = 0;
}
void LibartClipPath::init()
{
SVGMatrixImpl *clipMatrix = 0;
// Start with referencing element's coordinate system
SVGLocatableImpl *locatableReferrer = dynamic_cast<SVGLocatableImpl *>(m_clipPath->getBBoxTarget());
if(locatableReferrer)
clipMatrix = locatableReferrer->getScreenCTM();
else
clipMatrix = SVGSVGElementImpl::createSVGMatrix();
if(m_clipPath->clipPathUnits()->baseVal() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX && m_clipPath->getBBoxTarget())
{
SVGRectImpl *rect = m_clipPath->getBBoxTarget()->getBBox();
clipMatrix->translate(rect->qrect().x(), rect->qrect().y());
clipMatrix->scaleNonUniform(rect->qrect().width(), rect->qrect().height());
rect->deref();
}
// Add transformations on the clipPath element itself
if(m_clipPath->localMatrix())
clipMatrix->multiply(m_clipPath->localMatrix());
if(m_clipSVP)
{
art_svp_free(m_clipSVP);
m_clipSVP = 0;
}
DOM::Node node = m_clipPath->firstChild();
for(; !node.isNull(); node = node.nextSibling())
{
SVGElementImpl *element = m_clipPath->ownerDoc()->getElementFromHandle(node.handle());
SVGShapeImpl *shape = dynamic_cast<SVGShapeImpl *>(element);
SVGTestsImpl *tests = dynamic_cast<SVGTestsImpl *>(element);
bool ok = tests ? tests->ok() : true;
if(element && shape && ok && !shape->isContainer())
{
LibartClipItem *clipElement = dynamic_cast<LibartClipItem *>(shape->item());
if(dynamic_cast<LibartText *>(shape->item()))
{
// The cast to a clipElement above is failing when it is valid. But only
// in the plugin - svgdisplay works fine. What's going on? (Adrian)
clipElement = dynamic_cast<LibartText *>(shape->item());
}
if(clipElement)
{
clipElement->setRenderContext(CLIPPING);
// Push coordinate system down to children.
SVGLocatableImpl *locatable = dynamic_cast<SVGLocatableImpl *>(shape);
if(locatable)
locatable->updateCachedScreenCTM(clipMatrix);
clipElement->initClipItem();
ArtSVP *one = clipElement->clipSVP();
if(!one)
break;
if(m_clipSVP == 0)
m_clipSVP = LibartCanvas::copy_svp(one);
else
{
ArtSVP *svp_union = art_svp_union(m_clipSVP, one);
art_svp_free(m_clipSVP);
m_clipSVP = svp_union;
}
}
}
}
clipMatrix->deref();
}
void LibartClipPath::draw()
{
}
ArtSVP *LibartClipPath::clipSVP()
{
return m_clipSVP;
}
// #####
LibartImage::LibartImage(LibartCanvas *c, SVGImageElementImpl *image)
: m_canvas(c), m_image(image)
{
}
LibartImage::~LibartImage()
{
}
void LibartImage::draw()
{
if(isVisible())
{
SVGMatrixImpl *ctm = m_image->scaledImageMatrix();
TQImage image = m_image->scaledImage();
KSVGPolygon clippingPolygon = m_image->clippingShape();
m_canvas->drawImage(image, m_image, ctm, clippingPolygon);
ctm->deref();
}
}
bool LibartImage::isVisible()
{
return (m_referenced || (m_image->getVisible() && m_image->getDisplay() && m_image->directRender())) && m_image->image();
}
void LibartImage::init()
{
}
TQRect LibartImage::bbox() const
{
TQRect bbox(static_cast<int>(m_image->x()->baseVal()->value()),
static_cast<int>(m_image->y()->baseVal()->value()),
static_cast<int>(m_image->width()->baseVal()->value()),
static_cast<int>(m_image->height()->baseVal()->value()));
return SVGHelperImpl::fromUserspace(m_image, bbox);
}
// #####
LibartMarker::LibartMarker(LibartCanvas *c, SVGMarkerElementImpl *marker)
: CanvasMarker(marker), m_canvas(c)
{
}
LibartMarker::~LibartMarker()
{
}
void LibartMarker::init()
{
}
void LibartMarker::draw()
{
}
// #####
LibartText::LibartText(LibartCanvas *c, SVGTextElementImpl *text)
: CanvasText(text), m_canvas(c)
{
m_drawFillItems.setAutoDelete(true);
m_drawStrokeItems.setAutoDelete(true);
m_fillPainters.setAutoDelete(true);
m_strokePainters.setAutoDelete(true);
init();
}
LibartText::~LibartText()
{
clearSVPs();
}
LibartText::SVPElement::~SVPElement()
{
if(svp)
art_svp_free(svp);
}
TQRect LibartText::bbox() const
{
TQRect result, rect;
TQPtrListIterator<SVPElement> it1(m_drawFillItems);
TQPtrListIterator<SVPElement> it2(m_drawStrokeItems);
SVPElement *fill = it1.current(), *stroke = it2.current();
while(fill != 0 || stroke != 0)
{
ArtIRect *irect = new ArtIRect();
ArtVpath *vpath = art_vpath_from_svp((stroke && stroke->svp) ? stroke->svp : fill->svp);
art_vpath_bbox_irect(vpath, irect);
art_free(vpath);
rect.setX(irect->x0);
rect.setY(irect->y0);
rect.setWidth(irect->x1 - irect->x0);
rect.setHeight(irect->y1 - irect->y0);
delete irect;
result = result.unite(rect);
fill = ++it1;
stroke = ++it2;
}
return result;
}
bool LibartText::fillContains(const TQPoint &p)
{
TQPtrListIterator<SVPElement> it(m_drawFillItems);
SVPElement *fill = it.current();
while(fill && fill->svp)
{
if(fill->svp && art_svp_point_wind(fill->svp, p.x(), p.y()) != 0)
return true;
fill = ++it;
}
return false;
}
bool LibartText::strokeContains(const TQPoint &p)
{
TQPtrListIterator<SVPElement> it(m_drawStrokeItems);
SVPElement *stroke = it.current();
while(stroke && stroke->svp)
{
if(stroke->svp && art_svp_point_wind(stroke->svp, p.x(), p.y()) != 0)
return true;
stroke = ++it;
}
return false;
}
void LibartText::update(CanvasItemUpdate reason, int param1, int param2)
{
if(reason == UPDATE_STYLE)
{
TQPtrListIterator<SVPElement> it1(m_drawFillItems);
TQPtrListIterator<SVPElement> it2(m_drawStrokeItems);
SVPElement *fill = it1.current(), *stroke = it2.current();
while(fill != 0 || stroke != 0)
{
SVGTextContentElementImpl *text = fill ? fill->element : stroke->element;
bool fillOk = fill && fill->svp && text->isFilled();
bool strokeOk = stroke && stroke->svp && text->isStroked() && text->getStrokeWidth()->baseVal()->value() > 0; // Spec: A zero value causes no stroke to be painted.
if(fillOk || strokeOk)
{
if(m_fillPainters.find(text))
m_fillPainters[text]->update(text);
if(m_strokePainters.find(text))
m_strokePainters[text]->update(text);
}
fill = ++it1;
stroke = ++it2;
}
m_canvas->invalidate(this, false);
}
else if(reason == UPDATE_TRANSFORM)
{
clearSVPs();
init();
m_canvas->invalidate(this, true);
}
else if(reason == UPDATE_ZOOM)
{
clearSVPs();
init();
}
else if(reason == UPDATE_PAN)
{
TQPtrListIterator<SVPElement> it1(m_drawFillItems);
TQPtrListIterator<SVPElement> it2(m_drawStrokeItems);
double affine[6];
KSVGHelper::matrixToAffine(m_text->screenCTM(), affine);
SVPElement *fill = it1.current(), *stroke = it2.current();
while(fill != 0 || stroke != 0)
{
SVGTextContentElementImpl *text = fill ? fill->element : stroke->element;
bool fillOk = fill && fill->svp && text->isFilled();
bool strokeOk = stroke && stroke->svp && text->isStroked() && text->getStrokeWidth()->baseVal()->value() > 0; // Spec: A zero value causes no stroke to be painted.
if(fillOk)
ksvg_art_svp_move(fill->svp, param1, param2);
if(strokeOk)
ksvg_art_svp_move(stroke->svp, param1, param2);
fill = ++it1;
stroke = ++it2;
}
}
/*
else if(reason == UPDATE_LINEWIDTH)
{
}*/
}
void LibartText::draw()
{
TQPtrListIterator<SVPElement> it1(m_drawFillItems);
TQPtrListIterator<SVPElement> it2(m_drawStrokeItems);
SVPElement *fill = it1.current(), *stroke = it2.current();
while(fill != 0 || stroke != 0)
{
SVGTextContentElementImpl *text = fill ? fill->element : stroke->element;
if(!text || !text->getVisible() || !text->getDisplay() || !text->directRender())
return;
bool fillOk = fill && fill->svp && text->isFilled();
bool strokeOk = stroke && stroke->svp && text->isStroked() && text->getStrokeWidth()->baseVal()->value() > 0; // Spec: A zero value causes no stroke to be painted.
if(fillOk || strokeOk)
{
if(fillOk && m_fillPainters.find(text))
m_fillPainters[text]->draw(m_canvas, fill->svp, text, text);
if(strokeOk && m_strokePainters.find(text))
m_strokePainters[text]->draw(m_canvas, stroke->svp, text, text);
}
fill = ++it1;
stroke = ++it2;
}
}
bool LibartText::isVisible()
{
bool foundVisible = false;
TQPtrListIterator<SVPElement> it1(m_drawFillItems);
TQPtrListIterator<SVPElement> it2(m_drawStrokeItems);
SVPElement *fill = it1.current(), *stroke = it2.current();
while(fill != 0 || stroke != 0)
{
SVGTextContentElementImpl *text = fill ? fill->element : stroke->element;
if(text && text->getVisible() && text->getDisplay() && text->directRender())
{
foundVisible = true;
break;
}
fill = ++it1;
stroke = ++it2;
}
return foundVisible;
}
void LibartText::init()
{
init(m_text->screenCTM());
}
void LibartText::renderCallback(SVGTextContentElementImpl *element, const SVGMatrixImpl *screenCTM, T2P::GlyphSet *glyph, T2P::GlyphLayoutParams *params, double anchor) const
{
unsigned int glyphCount = glyph->glyphCount(); // Don't call it n times in the for loop
for(unsigned int i = 0; i < glyphCount; i++)
{
T2P::GlyphAffinePair *glyphAffine = glyph->set()[i];
ArtBpath *bezier = static_cast<const T2P::BezierPathLibart *>(glyphAffine->transformatedPath())->m_array.data();
ArtBpath *result = bezier;
// text-anchor support
if(anchor != 0)
{
double correct[6];
if(!params->tb())
art_affine_translate(correct, -anchor, 0);
else
art_affine_translate(correct, 0, -anchor);
ArtBpath *temp = art_bpath_affine_transform(result, correct);
//art_free(result);
result = temp;
}
ArtSVP *fillSVP = 0, *strokeSVP = 0;
if(m_context == NORMAL)
LibartShape::calcSVPs(result, m_text, screenCTM, &strokeSVP, &fillSVP);
else
LibartShape::calcClipSVP(ksvg_art_bez_path_to_vec(result, 0.25), m_text, screenCTM, &fillSVP);
SVPElement *fillElement = new SVPElement();
fillElement->svp = fillSVP;
fillElement->element = element;
SVPElement *strokeElement = new SVPElement();
strokeElement->svp = strokeSVP;
strokeElement->element = element;
m_drawFillItems.append(fillElement);
m_drawStrokeItems.append(strokeElement);
if(!m_fillPainters.find(element) && element->isFilled())
m_fillPainters.insert(element, new LibartFillPainter(element));
// Spec: A zero value causes no stroke to be painted.
if(!m_strokePainters.find(element) && element->isStroked() && element->getStrokeWidth()->baseVal()->value() > 0)
m_strokePainters.insert(element, new LibartStrokePainter(element));
}
}
void LibartText::init(const SVGMatrixImpl *screenCTM)
{
int curx = 0, cury = 0, endx = 0, endy = 0;
KSVGTextChunk *textChunk = CanvasText::createTextChunk(m_canvas, screenCTM, curx, cury, endx, endy);
if(textChunk->count() > 0)
CanvasText::createGlyphs(textChunk, m_canvas, screenCTM, curx, cury, endx, endy);
delete textChunk;
}
void LibartText::clearSVPs()
{
m_drawFillItems.clear();
m_drawStrokeItems.clear();
m_fillPainters.clear();
m_strokePainters.clear();
}
void LibartText::addTextDecoration(SVGTextContentElementImpl *element, double x, double y, double width, double height) const
{
if(m_text->isFilled() || m_text->isStroked())
{
// compute rect svp
ArtVpath *vec = allocVPath(6);
vec[0].code = ART_MOVETO;
vec[0].x = x;
vec[0].y = y;
vec[1].code = ART_LINETO;
vec[1].x = x;
vec[1].y = y + height;
vec[2].code = ART_LINETO;
vec[2].x = x + width;
vec[2].y = y + height;
vec[3].code = ART_LINETO;
vec[3].x = x + width;
vec[3].y = y;
vec[4].code = ART_LINETO;
vec[4].x = x;
vec[4].y = y;
vec[5].code = ART_END;
double affine[6];
KSVGHelper::matrixToAffine(m_text->screenCTM(), affine);
ArtVpath *temp = art_vpath_affine_transform(vec, affine);
art_free(vec);
vec = temp;
if(m_text->isFilled())
{
ArtSvpWriter *swr;
ArtSVP *temp = art_svp_from_vpath(vec);
swr = art_svp_writer_rewind_new(ART_WIND_RULE_ODDEVEN);
art_svp_intersector(temp, swr);
ArtSVP *fillSVP = art_svp_writer_rewind_reap(swr);
SVPElement *fillElement = new SVPElement();
fillElement->svp = fillSVP;
fillElement->element = element;
m_drawFillItems.append(fillElement);
if(!m_fillPainters.find(element) && element->isFilled())
m_fillPainters.insert(element, new LibartFillPainter(element));
art_svp_free(temp);
}
// Stroking
if(m_text->isStroked() || m_text->getStrokeColor()->paintType() == SVG_PAINTTYPE_URI)
{
double ratio = art_affine_expansion(affine);
ArtSVP *strokeSVP = art_svp_vpath_stroke(vec, (ArtPathStrokeJoinType)m_text->getJoinStyle(), (ArtPathStrokeCapType)m_text->getCapStyle(), m_text->getStrokeWidth()->baseVal()->value() * ratio, m_text->getStrokeMiterlimit(), 0.25);
SVPElement *strokeElement = new SVPElement();
strokeElement->svp = strokeSVP;
strokeElement->element = element;
m_drawStrokeItems.append(strokeElement);
// Spec: A zero value causes no stroke to be painted.
if(!m_strokePainters.find(element) && element->isStroked() && element->getStrokeWidth()->baseVal()->value() > 0)
m_strokePainters.insert(element, new LibartStrokePainter(element));
}
art_free(vec);
}
}
void LibartText::initClipItem()
{
init();
}
ArtSVP *LibartText::clipSVP()
{
ArtSVP *svp = 0;
TQPtrListIterator<SVPElement> it(m_drawFillItems);
SVPElement *fill = it.current();
while(fill && fill->svp)
{
if(svp == 0)
svp = LibartCanvas::copy_svp(fill->svp);
else
{
ArtSVP *svp_union = art_svp_union(svp, fill->svp);
art_svp_free(svp);
svp = svp_union;
}
fill = ++it;
}
return svp;
}
ArtRender *LibartPaintServer::createRenderer(TQRect bbox, KSVGCanvas *c)
{
int x0 = bbox.x();
int y0 = bbox.y();
int x1 = bbox.right();
int y1 = bbox.bottom();
c->clipToBuffer(x0, y0, x1, y1);
// Note: We always pass 3 for the number of channels since the ART_ALPHA parameter
// adds the alpha channel when present.
ArtRender *render = 0;
render = art_render_new(TQMIN(x0, x1),
TQMIN(y0, y1),
TQMAX(x0, x1) + 1,
TQMAX(y0, y1) + 1,
c->renderingBuffer() + x0 * c->nrChannels() + y0 * c->rowStride(),
c->rowStride(), 3, 8,
c->nrChannels() == 3 ? ART_ALPHA_NONE : ART_ALPHA_PREMUL, 0);
return render;
}
void LibartGradient::parseGradientStops(SVGGradientElementImpl *gradient)
{
const double epsilon = DBL_EPSILON;
for(DOM::Node node = gradient->firstChild(); !node.isNull(); node = node.nextSibling())
{
SVGStopElementImpl *elem = dynamic_cast<SVGStopElementImpl *>(m_gradient->ownerDoc()->getElementFromHandle(node.handle()));
if(elem)
{
m_stops.resize(m_stops.size() + 1);
ArtGradientStop *stop = &(m_stops[m_stops.size() - 1]);
stop->offset = elem->offset()->baseVal();
// Spec: clamp range to 0 to 1
if(stop->offset < epsilon)
stop->offset = 0;
else if(stop->offset > 1 - epsilon)
stop->offset = 1;
// Spec: if offset is less than previous offset, set it to the previous offset
if(m_stops.size() > 1 && stop->offset < (stop - 1)->offset + epsilon)
stop->offset = (stop - 1)->offset;
// Get color
TQColor qStopColor;
if(elem->getStopColor()->colorType() == SVG_COLORTYPE_CURRENTCOLOR)
qStopColor = elem->getColor()->rgbColor().color();
else
qStopColor = elem->getStopColor()->rgbColor().color();
// Convert in a libart suitable form
TQString tempName = qStopColor.name();
const char *str = tempName.latin1();
int stopColor = 0;
for(int i = 1; str[i]; i++)
{
int hexval;
if(str[i] >= '0' && str[i] <= '9')
hexval = str[i] - '0';
else if (str[i] >= 'A' && str[i] <= 'F')
hexval = str[i] - 'A' + 10;
else if (str[i] >= 'a' && str[i] <= 'f')
hexval = str[i] - 'a' + 10;
else
break;
stopColor = (stopColor << 4) + hexval;
}
// Apply stop-opacity
float opacity = elem->stopOpacity();
// Get rgba color including stop-opacity
TQ_UINT32 rgba = (stopColor << 8) | int(opacity * 255.0 + 0.5);
TQ_UINT32 r, g, b, a;
a = rgba & 0xff;
r = (rgba >> 24) & 0xff;
g = (rgba >> 16) & 0xff;
b = (rgba >> 8) & 0xff;
stop->color[0] = ART_PIX_MAX_FROM_8(r);
stop->color[1] = ART_PIX_MAX_FROM_8(g);
stop->color[2] = ART_PIX_MAX_FROM_8(b);
stop->color[3] = ART_PIX_MAX_FROM_8(a);
}
}
}
void LibartGradient::finalizePaintServer()
{
parseGradientStops(m_gradient->stopsSource());
TQString _href = SVGURIReferenceImpl::getTarget(m_gradient->href()->baseVal().string());
if(!_href.isEmpty())
reference(_href);
setFinalized();
}
void LibartGradient::reference(const TQString &)
{
}
void LibartLinearGradient::render(KSVGCanvas *c, ArtSVP *svp, float opacity, TQByteArray mask, TQRect screenBBox)
{
if(!m_stops.isEmpty())
{
m_linear->converter()->finalize(getBBoxTarget(), m_linear->ownerSVGElement(), m_linear->gradientUnits()->baseVal());
ArtKSVGGradientLinear *linear = art_new(ArtKSVGGradientLinear, 1);
if(m_linear->spreadMethod()->baseVal() == SVG_SPREADMETHOD_REPEAT)
linear->spread = ART_GRADIENT_REPEAT;
else if(m_linear->spreadMethod()->baseVal() == SVG_SPREADMETHOD_REFLECT)
linear->spread = ART_GRADIENT_REFLECT;
else
linear->spread = ART_GRADIENT_PAD;
linear->interpolation = m_linear->getColorInterpolation() == CI_SRGB ? ART_KSVG_SRGB_INTERPOLATION : ART_KSVG_LINEARRGB_INTERPOLATION;
ArtRender *render = createRenderer(screenBBox, c);
double _x1 = m_linear->x1()->baseVal()->value();
double _y1 = m_linear->y1()->baseVal()->value();
double _x2 = m_linear->x2()->baseVal()->value();
double _y2 = m_linear->y2()->baseVal()->value();
// Respect current transformation matrix (so gradients zoom with...)
SVGTransformableImpl *transformable = dynamic_cast<SVGTransformableImpl *>(getBBoxTarget());
SVGMatrixImpl *matrix = 0;
if(transformable)
matrix = transformable->getScreenCTM();
else
matrix = SVGSVGElementImpl::createSVGMatrix();
const double epsilon = DBL_EPSILON;
if(m_linear->gradientUnits()->baseVal() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX)
{
// Here we're undoing the unit-converter's work because putting the
// bounding box transform into the matrix here lets the gradient transform
// sit at the right point in the chain to work with bounding box coordinates. It
// also removes the need for code to generate the 'not perpendicular to gradient vector' effect.
SVGRectImpl *userBbox = getBBoxTarget()->getBBox();
double width = userBbox->width();
double height = userBbox->height();
// Catch case of width or height of zero, which can be the case for lines.
if(width < epsilon)
width = 1;
if(height < epsilon)
height = 1;
_x1 /= width;
_y1 /= height;
_x2 /= width;
_y2 /= height;
matrix->translate(userBbox->x(), userBbox->y());
matrix->scaleNonUniform(width, height);
userBbox->deref();
}
// Adjust to gradient transform
SVGMatrixImpl *gradTrans = m_linear->gradientTransform()->baseVal()->concatenate();
if(gradTrans)
{
matrix->multiply(gradTrans);
gradTrans->deref();
}
double dx = _x2 - _x1;
double dy = _y2 - _y1;
if(fabs(dx) < epsilon && fabs(dy) < epsilon)
{
// Lines can generate (0, 0) with bbox coords.
dx = 1;
dy = 0;
}
double angle = atan2(dy, dx);
double length = sqrt(dx * dx + dy * dy);
const double pi = 3.14159265358979323846;
matrix->translate(_x1, _y1);
matrix->scale(length);
matrix->rotate(angle * 180.0 / pi);
double affine[6];
KSVGHelper::matrixToAffine(matrix, affine);
art_affine_invert(linear->affine, affine);
matrix->deref();
TQMemArray<ArtGradientStop> stops = m_stops;
stops.detach();
for(unsigned int i = 0; i < stops.size(); i++)
stops[i].color[3] = ArtPixMaxDepth(stops[i].color[3] * opacity + 0.5);
if(m_linear->x1()->baseVal()->valueInSpecifiedUnits() == m_linear->x2()->baseVal()->valueInSpecifiedUnits()
&& m_linear->y1()->baseVal()->valueInSpecifiedUnits() == m_linear->y2()->baseVal()->valueInSpecifiedUnits())
{
// Spec: If x1 == x2 and y1 == y2, paint the area in a single colour, using the colour
// of the last stop.
//
// Using valueInSpecifiedUnits() so that we are comparing the values before possible
// conversion to bounding box units by the converter.
if(stops.size() > 1)
{
stops[0] = stops[stops.size() - 1];
stops.resize(1);
}
}
linear->stops = &(stops[0]);
linear->n_stops = stops.size();
art_render_svp(render, svp);
art_ksvg_render_gradient_linear(render, linear, ART_FILTER_HYPER);
if(mask.data())
art_render_mask(render, screenBBox.left(), screenBBox.top(), screenBBox.right() + 1, screenBBox.bottom() + 1,
(const art_u8 *)mask.data(), screenBBox.width());
art_render_invoke(render);
art_free(linear);
}
}
void LibartRadialGradient::render(KSVGCanvas *c, ArtSVP *svp, float opacity, TQByteArray mask, TQRect screenBBox)
{
if(!m_stops.isEmpty())
{
m_radial->converter()->finalize(getBBoxTarget(), m_radial->ownerSVGElement(), m_radial->gradientUnits()->baseVal());
ArtKSVGGradientRadial *radial = art_new(ArtKSVGGradientRadial, 1);
if(m_radial->spreadMethod()->baseVal() == SVG_SPREADMETHOD_REPEAT)
radial->spread = ART_GRADIENT_REPEAT;
else if(m_radial->spreadMethod()->baseVal() == SVG_SPREADMETHOD_REFLECT)
radial->spread = ART_GRADIENT_REFLECT;
else
radial->spread = ART_GRADIENT_PAD;
radial->interpolation = m_radial->getColorInterpolation() == CI_SRGB ? ART_KSVG_SRGB_INTERPOLATION : ART_KSVG_LINEARRGB_INTERPOLATION;
ArtRender *render = createRenderer(screenBBox, c);
// Respect current transformation matrix (so gradients zoom with...)
SVGTransformableImpl *transformable = dynamic_cast<SVGTransformableImpl *>(getBBoxTarget());
SVGMatrixImpl *matrix = 0;
if(transformable)
matrix = transformable->getScreenCTM();
else
matrix = SVGSVGElementImpl::createSVGMatrix();
double _cx = m_radial->cx()->baseVal()->value();
double _cy = m_radial->cy()->baseVal()->value();
double _r = m_radial->r()->baseVal()->value();
double _fx;
double _fy;
// Spec: If attribute fx is not specified, fx will coincide with cx.
if(m_radial->getAttribute("fx").isEmpty())
_fx = _cx;
else
_fx = m_radial->fx()->baseVal()->value();
// Spec: If attribute fy is not specified, fy will coincide with cy.
if(m_radial->getAttribute("fy").isEmpty())
_fy = _cy;
else
_fy = m_radial->fy()->baseVal()->value();
const double epsilon = DBL_EPSILON;
if(m_radial->gradientUnits()->baseVal() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX)
{
// Here we're undoing the unit-converter's work because putting the
// bounding box transform into the matrix here lets the gradient transform
// sit at the right point in the chain to work with bounding box coordinates.
// It also produces the elliptical shape due to the non-uniform scaling.
SVGRectImpl *userBBox = getBBoxTarget()->getBBox();
double width = userBBox->width();
double height = userBBox->height();
// Catch case of width or height of zero, which can be the case for lines.
if(width < epsilon)
width = 1;
if(height < epsilon)
height = 1;
_cx /= width;
_cy /= height;
_fx /= width;
_fy /= height;
_r /= (sqrt(width * width + height * height) / 1.4142135623731);
matrix->translate(userBBox->x(), userBBox->y());
matrix->scaleNonUniform(width, height);
userBBox->deref();
}
// Adjust to gradient transforms
SVGMatrixImpl *transform = m_radial->gradientTransform()->baseVal()->concatenate();
if(transform)
{
matrix->multiply(transform);
transform->deref();
}
double fx = (_fx - _cx) / _r;
double fy = (_fy - _cy) / _r;
if(fx * fx + fy * fy > 0.99)
{
// Spec: If (fx, fy) lies outside the circle defined by (cx, cy) and r, set (fx, fy)
// to the point of intersection of the line through (fx, fy) and the circle.
//
// Note: We need to keep (fx, fy) inside the unit circle in order for
// libart to render the gradient correctly.
double angle = atan2(fy, fx);
fx = cos(angle) * 0.99;
fy = sin(angle) * 0.99;
}
radial->fx = fx;
radial->fy = fy;
matrix->translate(_cx, _cy);
matrix->scale(_r);
double affine[6];
KSVGHelper::matrixToAffine(matrix, affine);
art_affine_invert(radial->affine, affine);
matrix->deref();
TQMemArray<ArtGradientStop> stops = m_stops;
stops.detach();
for(unsigned int i = 0; i < stops.size(); i++)
stops[i].color[3] = ArtPixMaxDepth(stops[i].color[3] * opacity + 0.5);
radial->stops = &(stops[0]);
radial->n_stops = stops.size();
art_render_svp(render, svp);
art_ksvg_render_gradient_radial(render, radial, ART_FILTER_HYPER);
if(mask.data())
art_render_mask(render, screenBBox.left(), screenBBox.top(), screenBBox.right() + 1, screenBBox.bottom() + 1,
(const art_u8 *)mask.data(), screenBBox.width());
art_render_invoke(render);
art_free(radial);
}
}
LibartPattern::LibartPattern(SVGPatternElementImpl *pattern)
: m_pattern(pattern)
{
}
void LibartPattern::finalizePaintServer()
{
m_pattern->finalizePaintServer();
setFinalized();
}
void LibartPattern::reference(const TQString &href)
{
m_pattern->reference(href);
}
void LibartPattern::render(KSVGCanvas *c, ArtSVP *svp, float opacity, TQByteArray mask, TQRect screenBBox)
{
SVGPatternElementImpl::Tile tile = m_pattern->createTile(getBBoxTarget());
if(!tile.image().isNull())
{
TQWMatrix m = tile.screenToTile();
double affine[6];
affine[0] = m.m11();
affine[1] = m.m12();
affine[2] = m.m21();
affine[3] = m.m22();
affine[4] = m.dx();
affine[5] = m.dy();
int alpha = int(opacity * 255 + 0.5);
ksvg_art_rgb_texture(svp, c->renderingBuffer() + screenBBox.x() * c->nrChannels() + screenBBox.y() * c->rowStride(), screenBBox.left(), screenBBox.top(), screenBBox.right() + 1, screenBBox.bottom() + 1, c->rowStride(), c->nrChannels(), tile.image().bits(), tile.image().width(), tile.image().height(), tile.image().width() * 4, affine, ART_FILTER_NEAREST, 0L, alpha, (art_u8 *)mask.data());
}
}
// vim:ts=4:noet
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