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/*
* Copyright (c) 2009, Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
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* in the documentation and/or other materials provided with the
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*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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*/
#include "config.h"
#include "RenderSVGModelObject.h"
#include "RenderLayerModelObject.h"
#include "RenderSVGResource.h"
#include "SVGNames.h"
#include "SVGResourcesCache.h"
#include "ShadowRoot.h"
#include <wtf/IsoMallocInlines.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(RenderSVGModelObject);
RenderSVGModelObject::RenderSVGModelObject(SVGElement& element, RenderStyle&& style)
: RenderElement(element, WTFMove(style), 0)
{
}
LayoutRect RenderSVGModelObject::clippedOverflowRectForRepaint(const RenderLayerModelObject* repaintContainer) const
{
return SVGRenderSupport::clippedOverflowRectForRepaint(*this, repaintContainer);
}
Optional<FloatRect> RenderSVGModelObject::computeFloatVisibleRectInContainer(const FloatRect& rect, const RenderLayerModelObject* container, VisibleRectContext context) const
{
return SVGRenderSupport::computeFloatVisibleRectInContainer(*this, rect, container, context);
}
void RenderSVGModelObject::mapLocalToContainer(const RenderLayerModelObject* repaintContainer, TransformState& transformState, MapCoordinatesFlags, bool* wasFixed) const
{
SVGRenderSupport::mapLocalToContainer(*this, repaintContainer, transformState, wasFixed);
}
const RenderObject* RenderSVGModelObject::pushMappingToContainer(const RenderLayerModelObject* ancestorToStopAt, RenderGeometryMap& geometryMap) const
{
return SVGRenderSupport::pushMappingToContainer(*this, ancestorToStopAt, geometryMap);
}
// Copied from RenderBox, this method likely requires further refactoring to work easily for both SVG and CSS Box Model content.
// FIXME: This may also need to move into SVGRenderSupport as the RenderBox version depends
// on borderBoundingBox() which SVG RenderBox subclases (like SVGRenderBlock) do not implement.
LayoutRect RenderSVGModelObject::outlineBoundsForRepaint(const RenderLayerModelObject* repaintContainer, const RenderGeometryMap*) const
{
LayoutRect box = enclosingLayoutRect(repaintRectInLocalCoordinates());
adjustRectForOutlineAndShadow(box);
FloatQuad containerRelativeQuad = localToContainerQuad(FloatRect(box), repaintContainer);
return LayoutRect(snapRectToDevicePixels(LayoutRect(containerRelativeQuad.boundingBox()), document().deviceScaleFactor()));
}
void RenderSVGModelObject::absoluteRects(Vector<IntRect>& rects, const LayoutPoint& accumulatedOffset) const
{
IntRect rect = enclosingIntRect(strokeBoundingBox());
rect.moveBy(roundedIntPoint(accumulatedOffset));
rects.append(rect);
}
void RenderSVGModelObject::absoluteQuads(Vector<FloatQuad>& quads, bool* wasFixed) const
{
quads.append(localToAbsoluteQuad(strokeBoundingBox(), UseTransforms, wasFixed));
}
void RenderSVGModelObject::willBeDestroyed()
{
SVGResourcesCache::clientDestroyed(*this);
RenderElement::willBeDestroyed();
}
void RenderSVGModelObject::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
{
if (diff == StyleDifference::Layout) {
setNeedsBoundariesUpdate();
if (style().hasTransform())
setNeedsTransformUpdate();
}
RenderElement::styleDidChange(diff, oldStyle);
SVGResourcesCache::clientStyleChanged(*this, diff, style());
}
bool RenderSVGModelObject::nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation&, const LayoutPoint&, HitTestAction)
{
ASSERT_NOT_REACHED();
return false;
}
static void getElementCTM(SVGElement* element, AffineTransform& transform)
{
ASSERT(element);
SVGElement* stopAtElement = SVGLocatable::nearestViewportElement(element);
ASSERT(stopAtElement);
AffineTransform localTransform;
Node* current = element;
while (current && current->isSVGElement()) {
SVGElement& currentElement = downcast<SVGElement>(*current);
localTransform = currentElement.renderer()->localToParentTransform();
transform = localTransform.multiply(transform);
// For getCTM() computation, stop at the nearest viewport element
if (&currentElement == stopAtElement)
break;
current = current->parentOrShadowHostNode();
}
}
// FloatRect::intersects does not consider horizontal or vertical lines (because of isEmpty()).
// So special-case handling of such lines.
static bool intersectsAllowingEmpty(const FloatRect& r, const FloatRect& other)
{
if (r.isEmpty() && other.isEmpty())
return false;
if (r.isEmpty() && !other.isEmpty()) {
return (other.contains(r.x(), r.y()) && !other.contains(r.maxX(), r.maxY()))
|| (!other.contains(r.x(), r.y()) && other.contains(r.maxX(), r.maxY()));
}
if (other.isEmpty() && !r.isEmpty())
return intersectsAllowingEmpty(other, r);
return r.intersects(other);
}
// One of the element types that can cause graphics to be drawn onto the target canvas. Specifically: circle, ellipse,
// image, line, path, polygon, polyline, rect, text and use.
static bool isGraphicsElement(const RenderElement& renderer)
{
return renderer.isSVGShape() || renderer.isSVGText() || renderer.isSVGImage() || renderer.element()->hasTagName(SVGNames::useTag);
}
// The SVG addFocusRingRects() method adds rects in local coordinates so the default absoluteFocusRingQuads
// returns incorrect values for SVG objects. Overriding this method provides access to the absolute bounds.
void RenderSVGModelObject::absoluteFocusRingQuads(Vector<FloatQuad>& quads)
{
quads.append(localToAbsoluteQuad(FloatQuad(repaintRectInLocalCoordinates())));
}
bool RenderSVGModelObject::checkIntersection(RenderElement* renderer, const FloatRect& rect)
{
if (!renderer || renderer->style().pointerEvents() == PointerEvents::None)
return false;
if (!isGraphicsElement(*renderer))
return false;
AffineTransform ctm;
SVGElement* svgElement = downcast<SVGElement>(renderer->element());
getElementCTM(svgElement, ctm);
ASSERT(svgElement->renderer());
return intersectsAllowingEmpty(rect, ctm.mapRect(svgElement->renderer()->repaintRectInLocalCoordinates()));
}
bool RenderSVGModelObject::checkEnclosure(RenderElement* renderer, const FloatRect& rect)
{
if (!renderer || renderer->style().pointerEvents() == PointerEvents::None)
return false;
if (!isGraphicsElement(*renderer))
return false;
AffineTransform ctm;
SVGElement* svgElement = downcast<SVGElement>(renderer->element());
getElementCTM(svgElement, ctm);
ASSERT(svgElement->renderer());
return rect.contains(ctm.mapRect(svgElement->renderer()->repaintRectInLocalCoordinates()));
}
} // namespace WebCore