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/*
* Copyright (C) 2006 Apple Computer, Inc.
* Copyright (C) 2009 Google, Inc.
* 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"
#if ENABLE(SVG) && ENABLE(SVG_FOREIGN_OBJECT)
#include "RenderForeignObject.h"
#include "GraphicsContext.h"
#include "RenderSVGResource.h"
#include "RenderView.h"
#include "SVGForeignObjectElement.h"
#include "SVGRenderSupport.h"
#include "SVGSVGElement.h"
#include "TransformState.h"
namespace WebCore {
RenderForeignObject::RenderForeignObject(SVGForeignObjectElement* node)
: RenderSVGBlock(node)
, m_needsTransformUpdate(true)
{
}
void RenderForeignObject::paint(PaintInfo& paintInfo, int, int)
{
if (paintInfo.context->paintingDisabled())
return;
PaintInfo childPaintInfo(paintInfo);
childPaintInfo.context->save();
childPaintInfo.applyTransform(localTransform());
if (SVGRenderSupport::isOverflowHidden(this))
childPaintInfo.context->clip(m_viewport);
float opacity = style()->opacity();
if (opacity < 1.0f)
childPaintInfo.context->beginTransparencyLayer(opacity);
RenderBlock::paint(childPaintInfo, 0, 0);
if (opacity < 1.0f)
childPaintInfo.context->endTransparencyLayer();
childPaintInfo.context->restore();
}
IntRect RenderForeignObject::clippedOverflowRectForRepaint(RenderBoxModelObject* repaintContainer)
{
return SVGRenderSupport::clippedOverflowRectForRepaint(this, repaintContainer);
}
void RenderForeignObject::computeRectForRepaint(RenderBoxModelObject* repaintContainer, IntRect& repaintRect, bool fixed)
{
SVGRenderSupport::computeRectForRepaint(this, repaintContainer, repaintRect, fixed);
}
const AffineTransform& RenderForeignObject::localToParentTransform() const
{
m_localToParentTransform = localTransform();
m_localToParentTransform.translate(m_viewport.x(), m_viewport.y());
return m_localToParentTransform;
}
void RenderForeignObject::calcWidth()
{
// FIXME: Investigate in size rounding issues
setWidth(static_cast<int>(roundf(m_viewport.width())));
}
void RenderForeignObject::calcHeight()
{
// FIXME: Investigate in size rounding issues
setHeight(static_cast<int>(roundf(m_viewport.height())));
}
void RenderForeignObject::layout()
{
ASSERT(needsLayout());
ASSERT(!view()->layoutStateEnabled()); // RenderSVGRoot disables layoutState for the SVG rendering tree.
LayoutRepainter repainter(*this, m_everHadLayout && checkForRepaintDuringLayout());
SVGForeignObjectElement* foreign = static_cast<SVGForeignObjectElement*>(node());
bool updateCachedBoundariesInParents = false;
if (m_needsTransformUpdate) {
m_localTransform = foreign->animatedLocalTransform();
m_needsTransformUpdate = false;
updateCachedBoundariesInParents = true;
}
FloatRect oldViewport = m_viewport;
// Cache viewport boundaries
FloatPoint viewportLocation(foreign->x().value(foreign), foreign->y().value(foreign));
m_viewport = FloatRect(viewportLocation, FloatSize(foreign->width().value(foreign), foreign->height().value(foreign)));
if (!updateCachedBoundariesInParents)
updateCachedBoundariesInParents = oldViewport != m_viewport;
// Set box origin to the foreignObject x/y translation, so positioned objects in XHTML content get correct
// positions. A regular RenderBoxModelObject would pull this information from RenderStyle - in SVG those
// properties are ignored for non <svg> elements, so we mimic what happens when specifying them through CSS.
// FIXME: Investigate in location rounding issues - only affects RenderForeignObject & RenderSVGText
setLocation(roundedIntPoint(viewportLocation));
bool layoutChanged = m_everHadLayout && selfNeedsLayout();
RenderBlock::layout();
ASSERT(!needsLayout());
// If our bounds changed, notify the parents.
if (updateCachedBoundariesInParents)
RenderSVGBlock::setNeedsBoundariesUpdate();
// Invalidate all resources of this client if our layout changed.
if (layoutChanged)
SVGResourcesCache::clientLayoutChanged(this);
repainter.repaintAfterLayout();
}
bool RenderForeignObject::nodeAtFloatPoint(const HitTestRequest& request, HitTestResult& result, const FloatPoint& pointInParent, HitTestAction hitTestAction)
{
FloatPoint localPoint = localTransform().inverse().mapPoint(pointInParent);
// Early exit if local point is not contained in clipped viewport area
if (SVGRenderSupport::isOverflowHidden(this) && !m_viewport.contains(localPoint))
return false;
IntPoint roundedLocalPoint = roundedIntPoint(localPoint);
return RenderBlock::nodeAtPoint(request, result, roundedLocalPoint.x(), roundedLocalPoint.y(), 0, 0, hitTestAction);
}
bool RenderForeignObject::nodeAtPoint(const HitTestRequest&, HitTestResult&, int, int, int, int, HitTestAction)
{
ASSERT_NOT_REACHED();
return false;
}
void RenderForeignObject::mapLocalToContainer(RenderBoxModelObject* repaintContainer, bool fixed, bool useTransforms, TransformState& transformState) const
{
// When crawling up the hierachy starting from foreignObject child content, useTransforms may not be set to true.
if (!useTransforms)
useTransforms = true;
SVGRenderSupport::mapLocalToContainer(this, repaintContainer, fixed, useTransforms, transformState);
}
}
#endif
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