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/*
* This file is part of the WebKit project.
*
* Copyright (C) 2006 Apple Computer, Inc.
*
* 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 "RenderView.h"
#include "SVGForeignObjectElement.h"
#include "SVGLength.h"
#include "SVGTransformList.h"
namespace WebCore {
RenderForeignObject::RenderForeignObject(SVGForeignObjectElement* node)
: RenderSVGBlock(node)
{
}
AffineTransform RenderForeignObject::translationForAttributes()
{
SVGForeignObjectElement* foreign = static_cast<SVGForeignObjectElement*>(element());
return AffineTransform().translate(foreign->x().value(foreign), foreign->y().value(foreign));
}
void RenderForeignObject::paint(PaintInfo& paintInfo, int parentX, int parentY)
{
if (paintInfo.context->paintingDisabled())
return;
paintInfo.context->save();
paintInfo.context->concatCTM(AffineTransform().translate(parentX, parentY));
paintInfo.context->concatCTM(localTransform());
paintInfo.context->concatCTM(translationForAttributes());
paintInfo.context->clip(getClipRect(parentX, parentY));
float opacity = style()->opacity();
if (opacity < 1.0f)
// FIXME: Possible optimization by clipping to bbox here, once relativeBBox is implemented & clip, mask and filter support added.
paintInfo.context->beginTransparencyLayer(opacity);
PaintInfo pi(paintInfo);
pi.rect = absoluteTransform().inverse().mapRect(paintInfo.rect);
RenderBlock::paint(pi, 0, 0);
if (opacity < 1.0f)
paintInfo.context->endTransparencyLayer();
paintInfo.context->restore();
}
void RenderForeignObject::computeAbsoluteRepaintRect(IntRect& r, bool f)
{
AffineTransform transform = translationForAttributes() * localTransform();
r = transform.mapRect(r);
RenderBlock::computeAbsoluteRepaintRect(r, f);
}
bool RenderForeignObject::requiresLayer()
{
return false;
}
bool RenderForeignObject::calculateLocalTransform()
{
AffineTransform oldTransform = m_localTransform;
m_localTransform = static_cast<SVGForeignObjectElement*>(element())->animatedLocalTransform();
return (oldTransform != m_localTransform);
}
void RenderForeignObject::layout()
{
ASSERT(needsLayout());
// Arbitrary affine transforms are incompatible with LayoutState.
view()->disableLayoutState();
IntRect oldBounds;
IntRect oldOutlineBox;
bool checkForRepaint = checkForRepaintDuringLayout();
if (checkForRepaint) {
oldBounds = m_absoluteBounds;
oldOutlineBox = absoluteOutlineBox();
}
calculateLocalTransform();
RenderBlock::layout();
m_absoluteBounds = absoluteClippedOverflowRect();
if (checkForRepaint)
repaintAfterLayoutIfNeeded(oldBounds, oldOutlineBox);
view()->enableLayoutState();
setNeedsLayout(false);
}
bool RenderForeignObject::nodeAtPoint(const HitTestRequest& request, HitTestResult& result, int x, int y, int tx, int ty, HitTestAction hitTestAction)
{
AffineTransform totalTransform = absoluteTransform();
totalTransform *= translationForAttributes();
double localX, localY;
totalTransform.inverse().map(x, y, &localX, &localY);
return RenderBlock::nodeAtPoint(request, result, static_cast<int>(localX), static_cast<int>(localY), tx, ty, hitTestAction);
}
} // namespace WebCore
#endif // ENABLE(SVG) && ENABLE(SVG_FOREIGN_OBJECT)
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