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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
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "core/layout/svg/LayoutSVGModelObject.h"
#include "core/layout/LayoutView.h"
#include "core/layout/svg/LayoutSVGContainer.h"
#include "core/layout/svg/LayoutSVGRoot.h"
#include "core/layout/svg/SVGLayoutSupport.h"
#include "core/layout/svg/SVGResourcesCache.h"
#include "core/paint/PaintLayer.h"
#include "core/svg/SVGGraphicsElement.h"
namespace blink {
LayoutSVGModelObject::LayoutSVGModelObject(SVGElement* node)
: LayoutObject(node)
{
}
bool LayoutSVGModelObject::isChildAllowed(LayoutObject* child, const ComputedStyle&) const
{
return child->isSVG() && !(child->isSVGInline() || child->isSVGInlineText() || child->isSVGGradientStop());
}
LayoutRect LayoutSVGModelObject::clippedOverflowRectForPaintInvalidation(const LayoutBoxModelObject* paintInvalidationContainer, const PaintInvalidationState* paintInvalidationState) const
{
return SVGLayoutSupport::clippedOverflowRectForPaintInvalidation(*this, paintInvalidationContainer, paintInvalidationState);
}
void LayoutSVGModelObject::mapLocalToAncestor(const LayoutBoxModelObject* ancestor, TransformState& transformState, MapCoordinatesFlags, bool* wasFixed, const PaintInvalidationState* paintInvalidationState) const
{
SVGLayoutSupport::mapLocalToAncestor(this, ancestor, transformState, wasFixed, paintInvalidationState);
}
void LayoutSVGModelObject::mapAncestorToLocal(const LayoutBoxModelObject* ancestor, TransformState& transformState, MapCoordinatesFlags) const
{
SVGLayoutSupport::mapAncestorToLocal(*this, ancestor, transformState);
}
const LayoutObject* LayoutSVGModelObject::pushMappingToContainer(const LayoutBoxModelObject* ancestorToStopAt, LayoutGeometryMap& geometryMap) const
{
return SVGLayoutSupport::pushMappingToContainer(this, ancestorToStopAt, geometryMap);
}
void LayoutSVGModelObject::absoluteRects(Vector<IntRect>& rects, const LayoutPoint& accumulatedOffset) const
{
IntRect rect = enclosingIntRect(strokeBoundingBox());
rect.moveBy(roundedIntPoint(accumulatedOffset));
rects.append(rect);
}
void LayoutSVGModelObject::absoluteQuads(Vector<FloatQuad>& quads, bool* wasFixed) const
{
quads.append(localToAbsoluteQuad(strokeBoundingBox(), 0 /* mode */, wasFixed));
}
void LayoutSVGModelObject::willBeDestroyed()
{
SVGResourcesCache::clientDestroyed(this);
LayoutObject::willBeDestroyed();
}
void LayoutSVGModelObject::computeLayerHitTestRects(LayerHitTestRects& rects) const
{
// Using just the rect for the SVGRoot is good enough for now.
SVGLayoutSupport::findTreeRootObject(this)->computeLayerHitTestRects(rects);
}
void LayoutSVGModelObject::addLayerHitTestRects(LayerHitTestRects&, const PaintLayer* currentLayer, const LayoutPoint& layerOffset, const LayoutRect& containerRect) const
{
// We don't walk into SVG trees at all - just report their container.
}
void LayoutSVGModelObject::styleDidChange(StyleDifference diff, const ComputedStyle* oldStyle)
{
if (diff.needsFullLayout()) {
setNeedsBoundariesUpdate();
if (diff.transformChanged())
setNeedsTransformUpdate();
}
if (isBlendingAllowed()) {
bool hasBlendModeChanged = (oldStyle && oldStyle->hasBlendMode()) == !style()->hasBlendMode();
if (parent() && hasBlendModeChanged)
parent()->descendantIsolationRequirementsChanged(style()->hasBlendMode() ? DescendantIsolationRequired : DescendantIsolationNeedsUpdate);
}
LayoutObject::styleDidChange(diff, oldStyle);
SVGResourcesCache::clientStyleChanged(this, diff, styleRef());
}
bool LayoutSVGModelObject::nodeAtPoint(HitTestResult&, const HitTestLocation&, const LayoutPoint&, HitTestAction)
{
ASSERT_NOT_REACHED();
return false;
}
// The SVG addOutlineRects() method adds rects in local coordinates so the default absoluteElementBoundingBoxRect()
// returns incorrect values for SVG objects. Overriding this method provides access to the absolute bounds.
IntRect LayoutSVGModelObject::absoluteElementBoundingBoxRect() const
{
return localToAbsoluteQuad(FloatQuad(paintInvalidationRectInLocalSVGCoordinates())).enclosingBoundingBox();
}
void LayoutSVGModelObject::invalidateTreeIfNeeded(const PaintInvalidationState& paintInvalidationState)
{
ASSERT(!needsLayout());
// If we didn't need paint invalidation then our children don't need as well.
// Skip walking down the tree as everything should be fine below us.
if (!shouldCheckForPaintInvalidation(paintInvalidationState))
return;
PaintInvalidationState newPaintInvalidationState(paintInvalidationState, *this);
invalidatePaintIfNeeded(newPaintInvalidationState);
clearPaintInvalidationFlags(newPaintInvalidationState);
newPaintInvalidationState.updatePaintOffsetAndClipForChildren();
invalidatePaintOfSubtreesIfNeeded(newPaintInvalidationState);
}
} // namespace blink
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