FloatRect LayoutSVGResourceMasker::resourceBoundingBox(const LayoutObject* object)
{
SVGMaskElement* maskElement = toSVGMaskElement(element());
ASSERT(maskElement);
FloatRect objectBoundingBox = object->objectBoundingBox();
FloatRect maskBoundaries = SVGLengthContext::resolveRectangle<SVGMaskElement>(maskElement, maskElement->maskUnits()->currentValue()->enumValue(), objectBoundingBox);
// Resource was not layouted yet. Give back clipping rect of the mask.
if (selfNeedsLayout())
return maskBoundaries;
if (m_maskContentBoundaries.isEmpty())
calculateMaskContentPaintInvalidationRect();
FloatRect maskRect = m_maskContentBoundaries;
if (maskElement->maskContentUnits()->currentValue()->value() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX) {
AffineTransform transform;
transform.translate(objectBoundingBox.x(), objectBoundingBox.y());
transform.scaleNonUniform(objectBoundingBox.width(), objectBoundingBox.height());
maskRect = transform.mapRect(maskRect);
}
maskRect.intersect(maskBoundaries);
return maskRect;
}
sk_sp<const SkPicture> LayoutSVGResourceMasker::createContentPicture(
AffineTransform& contentTransformation,
const FloatRect& targetBoundingBox,
GraphicsContext& context) {
SVGUnitTypes::SVGUnitType contentUnits = toSVGMaskElement(element())
->maskContentUnits()
->currentValue()
->enumValue();
if (contentUnits == SVGUnitTypes::kSvgUnitTypeObjectboundingbox) {
contentTransformation.translate(targetBoundingBox.x(),
targetBoundingBox.y());
contentTransformation.scaleNonUniform(targetBoundingBox.width(),
targetBoundingBox.height());
}
if (m_maskContentPicture)
return m_maskContentPicture;
SubtreeContentTransformScope contentTransformScope(contentTransformation);
// Using strokeBoundingBox instead of visualRectInLocalCoordinates
// to avoid the intersection with local clips/mask, which may yield incorrect
// results when mixing objectBoundingBox and userSpaceOnUse units.
// http://crbug.com/294900
FloatRect bounds = strokeBoundingBox();
SkPictureBuilder pictureBuilder(bounds, nullptr, &context);
ColorFilter maskContentFilter =
style()->svgStyle().colorInterpolation() == CI_LINEARRGB
? ColorFilterSRGBToLinearRGB
: ColorFilterNone;
pictureBuilder.context().setColorFilter(maskContentFilter);
for (SVGElement* childElement = Traversal<SVGElement>::firstChild(*element());
childElement;
childElement = Traversal<SVGElement>::nextSibling(*childElement)) {
LayoutObject* layoutObject = childElement->layoutObject();
if (!layoutObject)
continue;
const ComputedStyle* style = layoutObject->style();
if (!style || style->display() == EDisplay::None ||
style->visibility() != EVisibility::Visible)
continue;
SVGPaintContext::paintSubtree(pictureBuilder.context(), layoutObject);
}
m_maskContentPicture = pictureBuilder.endRecording();
return m_maskContentPicture;
}
void RenderSVGResourceMasker::drawMaskForRenderer(GraphicsContext* context, const FloatRect& targetBoundingBox)
{
ASSERT(context);
AffineTransform contentTransformation;
SVGUnitTypes::SVGUnitType contentUnits = toSVGMaskElement(element())->maskContentUnits()->currentValue()->enumValue();
if (contentUnits == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX) {
contentTransformation.translate(targetBoundingBox.x(), targetBoundingBox.y());
contentTransformation.scaleNonUniform(targetBoundingBox.width(), targetBoundingBox.height());
context->concatCTM(contentTransformation);
}
if (!m_maskContentDisplayList)
createDisplayList(context, contentTransformation);
ASSERT(m_maskContentDisplayList);
context->drawDisplayList(m_maskContentDisplayList.get());
}
PassRefPtr<const SkPicture> LayoutSVGResourceMasker::createContentPicture(AffineTransform& contentTransformation, const FloatRect& targetBoundingBox)
{
SVGUnitTypes::SVGUnitType contentUnits = toSVGMaskElement(element())->maskContentUnits()->currentValue()->enumValue();
if (contentUnits == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX) {
contentTransformation.translate(targetBoundingBox.x(), targetBoundingBox.y());
contentTransformation.scaleNonUniform(targetBoundingBox.width(), targetBoundingBox.height());
}
if (m_maskContentPicture)
return m_maskContentPicture;
SubtreeContentTransformScope contentTransformScope(contentTransformation);
// Using strokeBoundingBox (instead of paintInvalidationRectInLocalCoordinates) to avoid the intersection
// with local clips/mask, which may yield incorrect results when mixing objectBoundingBox and
// userSpaceOnUse units (http://crbug.com/294900).
FloatRect bounds = strokeBoundingBox();
OwnPtr<DisplayItemList> displayItemList;
if (RuntimeEnabledFeatures::slimmingPaintEnabled())
displayItemList = DisplayItemList::create();
GraphicsContext context(nullptr, displayItemList.get());
context.beginRecording(bounds);
ColorFilter maskContentFilter = style()->svgStyle().colorInterpolation() == CI_LINEARRGB
? ColorFilterSRGBToLinearRGB : ColorFilterNone;
context.setColorFilter(maskContentFilter);
for (SVGElement* childElement = Traversal<SVGElement>::firstChild(*element()); childElement; childElement = Traversal<SVGElement>::nextSibling(*childElement)) {
LayoutObject* layoutObject = childElement->layoutObject();
if (!layoutObject)
continue;
const ComputedStyle* style = layoutObject->style();
if (!style || style->display() == NONE || style->visibility() != VISIBLE)
continue;
SVGPaintContext::paintSubtree(&context, layoutObject);
}
if (displayItemList)
displayItemList->commitNewDisplayItemsAndReplay(context);
m_maskContentPicture = context.endRecording();
return m_maskContentPicture;
}
