void GraphicsContext::fillPath(const Path& path)
{
if (paintingDisabled())
return;
CGContextRef context = platformContext();
CGContextBeginPath(context);
CGContextAddPath(context, path.platformPath());
if (m_state.fillGradient) {
CGContextSaveGState(context);
if (fillRule() == RULE_EVENODD)
CGContextEOClip(context);
else
CGContextClip(context);
CGContextConcatCTM(context, m_state.fillGradient->gradientSpaceTransform());
m_state.fillGradient->paint(this);
CGContextRestoreGState(context);
return;
}
if (m_state.fillPattern)
applyFillPattern();
fillPathWithFillRule(context, fillRule());
}
void GraphicsContext::fillRectWithRoundedHole(const IntRect& rect, const RoundedRect& roundedHoleRect, const Color& color, ColorSpace colorSpace)
{
if (paintingDisabled())
return;
Path path;
path.addRect(rect);
if (!roundedHoleRect.radii().isZero())
path.addRoundedRect(roundedHoleRect);
else
path.addRect(roundedHoleRect.rect());
WindRule oldFillRule = fillRule();
Color oldFillColor = fillColor();
ColorSpace oldFillColorSpace = fillColorSpace();
setFillRule(RULE_EVENODD);
setFillColor(color, colorSpace);
fillPath(path);
setFillRule(oldFillRule);
setFillColor(oldFillColor, oldFillColorSpace);
}
void GraphicsContext::fillPath()
{
if (paintingDisabled())
return;
cairo_t* cr = m_data->cr;
cairo_save(cr);
cairo_set_fill_rule(cr, fillRule() == RULE_EVENODD ? CAIRO_FILL_RULE_EVEN_ODD : CAIRO_FILL_RULE_WINDING);
switch (m_common->state.fillColorSpace) {
case SolidColorSpace:
setColor(cr, fillColor());
cairo_clip(cr);
cairo_paint_with_alpha(cr, m_common->state.globalAlpha);
break;
case PatternColorSpace: {
TransformationMatrix affine;
cairo_set_source(cr, m_common->state.fillPattern->createPlatformPattern(affine));
cairo_clip(cr);
cairo_paint_with_alpha(cr, m_common->state.globalAlpha);
break;
}
case GradientColorSpace:
cairo_pattern_t* pattern = m_common->state.fillGradient->platformGradient();
pattern = applySpreadMethod(pattern, spreadMethod());
cairo_set_source(cr, pattern);
cairo_clip(cr);
cairo_paint_with_alpha(cr, m_common->state.globalAlpha);
break;
}
cairo_restore(cr);
}
void GraphicsContext::fillPath(const Path& pathToFill)
{
if (paintingDisabled())
return;
syncPlatformContext(this);
platformContext()->fillPath(pathToFill, fillRule());
}
bool FloatPolygon::contains(const FloatPoint& point) const
{
if (!m_boundingBox.contains(point))
return false;
return fillRule() == RULE_NONZERO ? containsNonZero(point) : containsEvenOdd(point);
}
void ExclusionPolygon::computeXIntersections(float y, bool isMinY, Vector<ExclusionInterval>& result) const
{
Vector<ExclusionPolygon::EdgeInterval> overlappingEdges;
m_edgeTree.allOverlaps(ExclusionPolygon::EdgeInterval(y, y, 0), overlappingEdges);
Vector<EdgeIntersection> intersections;
EdgeIntersection intersection;
for (unsigned i = 0; i < overlappingEdges.size(); i++) {
ExclusionPolygonEdge* edge = static_cast<ExclusionPolygonEdge*>(overlappingEdges[i].data());
if (computeXIntersection(edge, y, intersection) && intersection.type != VertexYBoth)
intersections.append(intersection);
}
if (intersections.size() < 2)
return;
std::sort(intersections.begin(), intersections.end(), WebCore::compareEdgeIntersectionX);
unsigned index = 0;
int windCount = 0;
bool inside = false;
while (index < intersections.size()) {
const EdgeIntersection& thisIntersection = intersections[index];
if (index + 1 < intersections.size()) {
const EdgeIntersection& nextIntersection = intersections[index + 1];
if ((thisIntersection.point.x() == nextIntersection.point.x()) && (thisIntersection.type == VertexMinY || thisIntersection.type == VertexMaxY)) {
if (thisIntersection.type == nextIntersection.type) {
// Skip pairs of intersections whose types are VertexMaxY,VertexMaxY and VertexMinY,VertexMinY.
index += 2;
} else {
// Replace pairs of intersections whose types are VertexMinY,VertexMaxY or VertexMaxY,VertexMinY with one intersection.
index++;
}
continue;
}
}
const ExclusionPolygonEdge& thisEdge = *thisIntersection.edge;
bool evenOddCrossing = !windCount;
if (fillRule() == RULE_EVENODD) {
windCount += (thisEdge.vertex2().y() > thisEdge.vertex1().y()) ? 1 : -1;
evenOddCrossing = evenOddCrossing || !windCount;
}
if (evenOddCrossing) {
bool edgeCrossing = thisIntersection.type == Normal;
if (!edgeCrossing) {
FloatPoint prevVertex;
FloatPoint thisVertex;
FloatPoint nextVertex;
if (getVertexIntersectionVertices(thisIntersection, prevVertex, thisVertex, nextVertex)) {
if (nextVertex.y() == y)
edgeCrossing = (isMinY) ? prevVertex.y() > y : prevVertex.y() < y;
else if (prevVertex.y() == y)
edgeCrossing = (isMinY) ? nextVertex.y() > y : nextVertex.y() < y;
else
edgeCrossing = true;
}
}
if (edgeCrossing)
inside = appendIntervalX(thisIntersection.point.x(), inside, result);
}
index++;
}
}
