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/*
* Copyright (C) 2006 Apple Computer, Inc.
* Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) Research In Motion Limited 2010. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "core/rendering/svg/RenderSVGBlock.h"
#include "core/rendering/RenderView.h"
#include "core/rendering/style/ShadowList.h"
#include "core/rendering/svg/RenderSVGRoot.h"
#include "core/rendering/svg/SVGRenderSupport.h"
#include "core/rendering/svg/SVGResourcesCache.h"
#include "core/svg/SVGElement.h"
namespace blink {
RenderSVGBlock::RenderSVGBlock(SVGElement* element)
: RenderBlockFlow(element)
{
}
LayoutRect RenderSVGBlock::visualOverflowRect() const
{
LayoutRect borderRect = borderBoxRect();
if (const ShadowList* textShadow = style()->textShadow())
textShadow->adjustRectForShadow(borderRect);
return borderRect;
}
void RenderSVGBlock::updateFromStyle()
{
RenderBlock::updateFromStyle();
// RenderSVGlock, used by Render(SVGText|ForeignObject), is not allowed to call setHasOverflowClip(true).
// RenderBlock assumes a layer to be present when the overflow clip functionality is requested. Both
// Render(SVGText|ForeignObject) return 'NoLayer' on 'layerTypeRequired'. Fine for RenderSVGText.
//
// If we want to support overflow rules for <foreignObject> we can choose between two solutions:
// a) make RenderSVGForeignObject require layers and SVG layer aware
// b) reactor overflow logic out of RenderLayer (as suggested by dhyatt), which is a large task
//
// Until this is resolved, disable overflow support. Opera/FF don't support it as well at the moment (Feb 2010).
//
// Note: This does NOT affect overflow handling on outer/inner <svg> elements - this is handled
// manually by RenderSVGRoot - which owns the documents enclosing root layer and thus works fine.
setHasOverflowClip(false);
}
void RenderSVGBlock::absoluteRects(Vector<IntRect>&, const LayoutPoint&) const
{
// This code path should never be taken for SVG, as we're assuming useTransforms=true everywhere, absoluteQuads should be used.
ASSERT_NOT_REACHED();
}
void RenderSVGBlock::willBeDestroyed()
{
SVGResourcesCache::clientDestroyed(this);
RenderBlockFlow::willBeDestroyed();
}
void RenderSVGBlock::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
{
if (diff.needsFullLayout())
setNeedsBoundariesUpdate();
if (isBlendingAllowed()) {
bool hasBlendModeChanged = (oldStyle && oldStyle->hasBlendMode()) == !style()->hasBlendMode();
if (parent() && hasBlendModeChanged)
parent()->descendantIsolationRequirementsChanged(style()->hasBlendMode() ? DescendantIsolationRequired : DescendantIsolationNeedsUpdate);
}
RenderBlock::styleDidChange(diff, oldStyle);
SVGResourcesCache::clientStyleChanged(this, diff, style());
}
void RenderSVGBlock::mapLocalToContainer(const RenderLayerModelObject* paintInvalidationContainer, TransformState& transformState, MapCoordinatesFlags, bool* wasFixed, const PaintInvalidationState* paintInvalidationState) const
{
SVGRenderSupport::mapLocalToContainer(this, paintInvalidationContainer, transformState, wasFixed, paintInvalidationState);
}
const RenderObject* RenderSVGBlock::pushMappingToContainer(const RenderLayerModelObject* ancestorToStopAt, RenderGeometryMap& geometryMap) const
{
return SVGRenderSupport::pushMappingToContainer(this, ancestorToStopAt, geometryMap);
}
LayoutRect RenderSVGBlock::clippedOverflowRectForPaintInvalidation(const RenderLayerModelObject* paintInvalidationContainer, const PaintInvalidationState* paintInvalidationState) const
{
return SVGRenderSupport::clippedOverflowRectForPaintInvalidation(this, paintInvalidationContainer, paintInvalidationState);
}
void RenderSVGBlock::mapRectToPaintInvalidationBacking(const RenderLayerModelObject* paintInvalidationContainer, LayoutRect& rect, const PaintInvalidationState* paintInvalidationState) const
{
FloatRect paintInvalidationRect = rect;
paintInvalidationRect.inflate(style()->outlineWidth());
const RenderSVGRoot& svgRoot = SVGRenderSupport::mapRectToSVGRootForPaintInvalidation(this, paintInvalidationRect, rect);
svgRoot.mapRectToPaintInvalidationBacking(paintInvalidationContainer, rect, paintInvalidationState);
}
bool RenderSVGBlock::nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation&, const LayoutPoint&, HitTestAction)
{
ASSERT_NOT_REACHED();
return false;
}
void RenderSVGBlock::invalidateTreeIfNeeded(const PaintInvalidationState& paintInvalidationState)
{
if (!shouldCheckForPaintInvalidation(paintInvalidationState))
return;
if (paintInvalidationState.cachedOffsetsEnabled()) {
m_cachedPaintInvalidationTransform = paintInvalidationState.svgTransform();
} else {
m_cachedPaintInvalidationTransform.makeIdentity();
RenderObject* next = parent();
while (!next->isSVGRoot()) {
m_cachedPaintInvalidationTransform = next->localToParentTransform() * m_cachedPaintInvalidationTransform;
next = next->parent();
ASSERT(next);
}
m_cachedPaintInvalidationTransform = toRenderSVGRoot(next)->localToBorderBoxTransform() * m_cachedPaintInvalidationTransform;
}
ForceHorriblySlowRectMapping slowRectMapping(&paintInvalidationState);
RenderBlockFlow::invalidateTreeIfNeeded(paintInvalidationState);
}
void RenderSVGBlock::updatePaintInfoRect(IntRect& rect)
{
if (rect != LayoutRect::infiniteIntRect()) {
AffineTransform transformToRoot = m_cachedPaintInvalidationTransform * localTransform();
rect = enclosingIntRect(transformToRoot.inverse().mapRect(FloatRect(rect)));
}
}
}
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