Vector<Gradient::ColorStop> SVGGradientElement::buildStops()
{
Vector<Gradient::ColorStop> stops;
float previousOffset = 0.0f;
for (Node* n = firstChild(); n; n = n->nextSibling()) {
SVGElement* element = n->isSVGElement() ? static_cast<SVGElement*>(n) : 0;
if (!element || !element->isGradientStop())
continue;
SVGStopElement* stop = static_cast<SVGStopElement*>(element);
Color color = stop->stopColorIncludingOpacity();
// Figure out right monotonic offset
float offset = stop->offset();
offset = std::min(std::max(previousOffset, offset), 1.0f);
previousOffset = offset;
// Extract individual channel values
// FIXME: Why doesn't ColorStop take a Color and an offset??
float r, g, b, a;
color.getRGBA(r, g, b, a);
stops.append(Gradient::ColorStop(offset, r, g, b, a));
}
return stops;
}
Vector<SVGGradientStop> SVGGradientElement::buildStops() const
{
Vector<SVGGradientStop> stops;
RenderStyle* gradientStyle = 0;
for (Node* n = firstChild(); n; n = n->nextSibling()) {
SVGElement* element = n->isSVGElement() ? static_cast<SVGElement*>(n) : 0;
if (element && element->isGradientStop()) {
SVGStopElement* stop = static_cast<SVGStopElement*>(element);
float stopOffset = stop->offset();
Color color;
float opacity;
if (stop->renderer()) {
RenderStyle* stopStyle = stop->renderer()->style();
color = stopStyle->svgStyle()->stopColor();
opacity = stopStyle->svgStyle()->stopOpacity();
} else {
// If there is no renderer for this stop element, then a parent element
// set display="none" - ie. <g display="none"><linearGradient><stop>..
// Unfortunately we have to manually rebuild the stop style. See pservers-grad-19-b.svg
if (!gradientStyle)
gradientStyle = const_cast<SVGGradientElement*>(this)->styleForRenderer(parent()->renderer());
RenderStyle* stopStyle = stop->resolveStyle(gradientStyle);
color = stopStyle->svgStyle()->stopColor();
opacity = stopStyle->svgStyle()->stopOpacity();
stopStyle->deref(document()->renderArena());
}
stops.append(makeGradientStop(stopOffset, makeRGBA(color.red(), color.green(), color.blue(), int(opacity * 255.))));
}
}
if (gradientStyle)
gradientStyle->deref(document()->renderArena());
return stops;
}
void SVGGradientElement::rebuildStops() const
{
if (m_resource && !ownerDocument()->parsing()) {
Vector<KCGradientStop> stops;
// FIXME: Manual style resolution is a hack
RenderStyle* gradientStyle = const_cast<SVGGradientElement*>(this)->styleForRenderer(parent()->renderer());
for (Node *n = firstChild(); n; n = n->nextSibling()) {
SVGElement *element = svg_dynamic_cast(n);
if (element && element->isGradientStop()) {
SVGStopElement *stop = static_cast<SVGStopElement *>(element);
float stopOffset = stop->offset()->baseVal();
RenderStyle *stopStyle = document()->styleSelector()->styleForElement(stop, gradientStyle);
Color c = stopStyle->svgStyle()->stopColor();
float opacity = stopStyle->svgStyle()->stopOpacity();
stops.append(makeGradientStop(stopOffset, makeRGBA(c.red(), c.green(), c.blue(), int(opacity * 255.))));
stopStyle->deref(view()->renderArena());
}
}
gradientStyle->deref(view()->renderArena());
m_resource->setGradientStops(stops);
}
}
