void SVGRenderSupport::finishRenderSVGContent(RenderObject* object, PaintInfo& paintInfo, GraphicsContext* savedContext)
{
#if !ENABLE(FILTERS)
UNUSED_PARAM(savedContext);
#endif
ASSERT(object);
const RenderStyle* style = object->style();
ASSERT(style);
const SVGRenderStyle* svgStyle = style->svgStyle();
ASSERT(svgStyle);
#if ENABLE(FILTERS)
SVGResources* resources = SVGResourcesCache::cachedResourcesForRenderObject(object);
if (resources) {
if (RenderSVGResourceFilter* filter = resources->filter()) {
filter->postApplyResource(static_cast<RenderSVGShape*>(object), paintInfo.context, ApplyToDefaultMode, 0, 0);
paintInfo.context = savedContext;
}
}
#endif
if (style->opacity() < 1 && !isRenderingMaskImage(object))
paintInfo.context->endTransparencyLayer();
if (svgStyle->shadow())
paintInfo.context->endTransparencyLayer();
}
void SVGRenderingContext::prepareToRenderSVGContent(RenderElement& renderer, PaintInfo& paintInfo, NeedsGraphicsContextSave needsGraphicsContextSave)
{
#ifndef NDEBUG
// This function must not be called twice!
ASSERT(!(m_renderingFlags & PrepareToRenderSVGContentWasCalled));
m_renderingFlags |= PrepareToRenderSVGContentWasCalled;
#endif
m_renderer = &renderer;
m_paintInfo = &paintInfo;
m_filter = 0;
// We need to save / restore the context even if the initialization failed.
if (needsGraphicsContextSave == SaveGraphicsContext) {
m_paintInfo->context().save();
m_renderingFlags |= RestoreGraphicsContext;
}
auto& style = m_renderer->style();
const SVGRenderStyle& svgStyle = style.svgStyle();
// Setup transparency layers before setting up SVG resources!
bool isRenderingMask = isRenderingMaskImage(*m_renderer);
// RenderLayer takes care of root opacity.
float opacity = (renderer.isSVGRoot() || isRenderingMask) ? 1 : style.opacity();
const ShadowData* shadow = svgStyle.shadow();
bool hasBlendMode = style.hasBlendMode();
bool hasIsolation = style.hasIsolation();
bool isolateMaskForBlending = false;
#if ENABLE(CSS_COMPOSITING)
if (svgStyle.hasMasker() && is<SVGGraphicsElement>(downcast<SVGElement>(*renderer.element()))) {
SVGGraphicsElement& graphicsElement = downcast<SVGGraphicsElement>(*renderer.element());
isolateMaskForBlending = graphicsElement.shouldIsolateBlending();
}
#endif
if (opacity < 1 || shadow || hasBlendMode || isolateMaskForBlending || hasIsolation) {
FloatRect repaintRect = m_renderer->repaintRectInLocalCoordinates();
m_paintInfo->context().clip(repaintRect);
if (opacity < 1 || hasBlendMode || isolateMaskForBlending || hasIsolation) {
if (hasBlendMode)
m_paintInfo->context().setCompositeOperation(m_paintInfo->context().compositeOperation(), style.blendMode());
m_paintInfo->context().beginTransparencyLayer(opacity);
if (hasBlendMode)
m_paintInfo->context().setCompositeOperation(m_paintInfo->context().compositeOperation(), BlendModeNormal);
m_renderingFlags |= EndOpacityLayer;
}
if (shadow) {
m_paintInfo->context().setShadow(IntSize(roundToInt(shadow->x()), roundToInt(shadow->y())), shadow->radius(), shadow->color());
m_paintInfo->context().beginTransparencyLayer(1);
m_renderingFlags |= EndShadowLayer;
}
}
ClipPathOperation* clipPathOperation = style.clipPath();
if (is<ShapeClipPathOperation>(clipPathOperation)) {
auto& clipPath = downcast<ShapeClipPathOperation>(*clipPathOperation);
FloatRect referenceBox;
if (clipPath.referenceBox() == Stroke)
// FIXME: strokeBoundingBox() takes dasharray into account but shouldn't.
referenceBox = renderer.strokeBoundingBox();
else if (clipPath.referenceBox() == ViewBox && renderer.element()) {
FloatSize viewportSize;
SVGLengthContext(downcast<SVGElement>(renderer.element())).determineViewport(viewportSize);
referenceBox.setWidth(viewportSize.width());
referenceBox.setHeight(viewportSize.height());
} else
referenceBox = renderer.objectBoundingBox();
m_paintInfo->context().clipPath(clipPath.pathForReferenceRect(referenceBox), clipPath.windRule());
}
auto* resources = SVGResourcesCache::cachedResourcesForRenderer(*m_renderer);
if (!resources) {
if (style.hasReferenceFilterOnly())
return;
m_renderingFlags |= RenderingPrepared;
return;
}
if (!isRenderingMask) {
if (RenderSVGResourceMasker* masker = resources->masker()) {
GraphicsContext* contextPtr = &m_paintInfo->context();
bool result = masker->applyResource(*m_renderer, style, contextPtr, ApplyToDefaultMode);
m_paintInfo->setContext(*contextPtr);
if (!result)
return;
}
}
RenderSVGResourceClipper* clipper = resources->clipper();
if (!clipPathOperation && clipper) {
GraphicsContext* contextPtr = &m_paintInfo->context();
bool result = clipper->applyResource(*m_renderer, style, contextPtr, ApplyToDefaultMode);
m_paintInfo->setContext(*contextPtr);
if (!result)
return;
}
if (!isRenderingMask) {
m_filter = resources->filter();
if (m_filter) {
m_savedContext = &m_paintInfo->context();
m_savedPaintRect = m_paintInfo->rect;
// Return with false here may mean that we don't need to draw the content
// (because it was either drawn before or empty) but we still need to apply the filter.
m_renderingFlags |= EndFilterLayer;
GraphicsContext* contextPtr = &m_paintInfo->context();
bool result = m_filter->applyResource(*m_renderer, style, contextPtr, ApplyToDefaultMode);
m_paintInfo->setContext(*contextPtr);
if (!result)
return;
// Since we're caching the resulting bitmap and do not invalidate it on repaint rect
// changes, we need to paint the whole filter region. Otherwise, elements not visible
// at the time of the initial paint (due to scrolling, window size, etc.) will never
// be drawn.
m_paintInfo->rect = IntRect(m_filter->drawingRegion(m_renderer));
}
}
m_renderingFlags |= RenderingPrepared;
}
bool SVGRenderSupport::prepareToRenderSVGContent(RenderObject* object, PaintInfo& paintInfo)
{
ASSERT(object);
RenderStyle* style = object->style();
ASSERT(style);
const SVGRenderStyle* svgStyle = style->svgStyle();
ASSERT(svgStyle);
// Setup transparency layers before setting up SVG resources!
bool isRenderingMask = isRenderingMaskImage(object);
float opacity = isRenderingMask ? 1 : style->opacity();
const ShadowData* shadow = svgStyle->shadow();
if (opacity < 1 || shadow) {
FloatRect repaintRect = object->repaintRectInLocalCoordinates();
if (opacity < 1) {
paintInfo.context->clip(repaintRect);
paintInfo.context->beginTransparencyLayer(opacity);
}
if (shadow) {
paintInfo.context->clip(repaintRect);
paintInfo.context->setShadow(IntSize(shadow->x(), shadow->y()), shadow->blur(), shadow->color(), style->colorSpace());
paintInfo.context->beginTransparencyLayer(1);
}
}
SVGResources* resources = SVGResourcesCache::cachedResourcesForRenderObject(object);
if (!resources) {
#if ENABLE(FILTERS)
if (svgStyle->hasFilter())
return false;
#endif
return true;
}
if (!isRenderingMask) {
if (RenderSVGResourceMasker* masker = resources->masker()) {
if (!masker->applyResource(object, style, paintInfo.context, ApplyToDefaultMode))
return false;
}
}
if (RenderSVGResourceClipper* clipper = resources->clipper()) {
if (!clipper->applyResource(object, style, paintInfo.context, ApplyToDefaultMode))
return false;
}
#if ENABLE(FILTERS)
if (!isRenderingMask) {
if (RenderSVGResourceFilter* filter = resources->filter()) {
if (!filter->applyResource(object, style, paintInfo.context, ApplyToDefaultMode))
return false;
}
}
#endif
return true;
}
