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/*
Copyright (C) 2006 Alexander Kellett <lypanov@kde.org>
Copyright (C) 2006 Apple Computer, Inc.
Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
Copyright (C) 2007, 2008, 2009 Rob Buis <buis@kde.org>
Copyright (C) 2009, Google, Inc.
Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
Copyright (C) 2010 Patrick Gansterer <paroga@paroga.com>
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)
#include "RenderSVGImage.h"
#include "Attr.h"
#include "FloatConversion.h"
#include "FloatQuad.h"
#include "GraphicsContext.h"
#include "PointerEventsHitRules.h"
#include "RenderImageResource.h"
#include "RenderLayer.h"
#include "RenderSVGResourceContainer.h"
#include "RenderSVGResourceFilter.h"
#include "SVGImageElement.h"
#include "SVGLength.h"
#include "SVGPreserveAspectRatio.h"
#include "SVGRenderSupport.h"
#include "SVGResources.h"
namespace WebCore {
RenderSVGImage::RenderSVGImage(SVGImageElement* impl)
: RenderSVGModelObject(impl)
, m_needsTransformUpdate(true)
, m_imageResource(RenderImageResource::create())
{
m_imageResource->initialize(this);
}
RenderSVGImage::~RenderSVGImage()
{
m_imageResource->shutdown();
}
void RenderSVGImage::layout()
{
ASSERT(needsLayout());
LayoutRepainter repainter(*this, checkForRepaintDuringLayout());
SVGImageElement* image = static_cast<SVGImageElement*>(node());
bool updateCachedBoundariesInParents = false;
if (m_needsTransformUpdate) {
m_localTransform = image->animatedLocalTransform();
m_needsTransformUpdate = false;
updateCachedBoundariesInParents = true;
}
// FIXME: Optimize caching the repaint rects.
FloatRect oldBoundaries = m_localBounds;
m_localBounds = FloatRect(image->x().value(image), image->y().value(image), image->width().value(image), image->height().value(image));
m_cachedLocalRepaintRect = FloatRect();
if (!updateCachedBoundariesInParents)
updateCachedBoundariesInParents = oldBoundaries != m_localBounds;
// Invalidate all resources of this client if our layout changed.
if (m_everHadLayout && selfNeedsLayout())
SVGResourcesCache::clientLayoutChanged(this);
// If our bounds changed, notify the parents.
if (updateCachedBoundariesInParents)
RenderSVGModelObject::setNeedsBoundariesUpdate();
repainter.repaintAfterLayout();
setNeedsLayout(false);
}
void RenderSVGImage::paint(PaintInfo& paintInfo, int, int)
{
if (paintInfo.context->paintingDisabled() || style()->visibility() == HIDDEN || !m_imageResource->hasImage())
return;
FloatRect boundingBox = repaintRectInLocalCoordinates();
if (!SVGRenderSupport::paintInfoIntersectsRepaintRect(boundingBox, m_localTransform, paintInfo))
return;
PaintInfo childPaintInfo(paintInfo);
bool drawsOutline = style()->outlineWidth() && (childPaintInfo.phase == PaintPhaseOutline || childPaintInfo.phase == PaintPhaseSelfOutline);
if (drawsOutline || childPaintInfo.phase == PaintPhaseForeground) {
childPaintInfo.context->save();
childPaintInfo.applyTransform(m_localTransform);
if (childPaintInfo.phase == PaintPhaseForeground) {
PaintInfo savedInfo(childPaintInfo);
if (SVGRenderSupport::prepareToRenderSVGContent(this, childPaintInfo)) {
Image* image = m_imageResource->image();
FloatRect destRect = m_localBounds;
FloatRect srcRect(0, 0, image->width(), image->height());
SVGImageElement* imageElement = static_cast<SVGImageElement*>(node());
if (imageElement->preserveAspectRatio().align() != SVGPreserveAspectRatio::SVG_PRESERVEASPECTRATIO_NONE)
imageElement->preserveAspectRatio().transformRect(destRect, srcRect);
childPaintInfo.context->drawImage(image, DeviceColorSpace, destRect, srcRect);
}
SVGRenderSupport::finishRenderSVGContent(this, childPaintInfo, savedInfo.context);
}
if (drawsOutline)
paintOutline(childPaintInfo.context, static_cast<int>(boundingBox.x()), static_cast<int>(boundingBox.y()),
static_cast<int>(boundingBox.width()), static_cast<int>(boundingBox.height()));
childPaintInfo.context->restore();
}
}
bool RenderSVGImage::nodeAtFloatPoint(const HitTestRequest& request, HitTestResult& result, const FloatPoint& pointInParent, HitTestAction hitTestAction)
{
// We only draw in the forground phase, so we only hit-test then.
if (hitTestAction != HitTestForeground)
return false;
PointerEventsHitRules hitRules(PointerEventsHitRules::SVG_IMAGE_HITTESTING, request, style()->pointerEvents());
bool isVisible = (style()->visibility() == VISIBLE);
if (isVisible || !hitRules.requireVisible) {
FloatPoint localPoint = localToParentTransform().inverse().mapPoint(pointInParent);
if (!SVGRenderSupport::pointInClippingArea(this, localPoint))
return false;
if (hitRules.canHitFill) {
if (m_localBounds.contains(localPoint)) {
updateHitTestResult(result, roundedIntPoint(localPoint));
return true;
}
}
}
return false;
}
FloatRect RenderSVGImage::repaintRectInLocalCoordinates() const
{
// If we already have a cached repaint rect, return that
if (!m_cachedLocalRepaintRect.isEmpty())
return m_cachedLocalRepaintRect;
m_cachedLocalRepaintRect = m_localBounds;
SVGRenderSupport::intersectRepaintRectWithResources(this, m_cachedLocalRepaintRect);
return m_cachedLocalRepaintRect;
}
void RenderSVGImage::imageChanged(WrappedImagePtr, const IntRect*)
{
// The image resource defaults to nullImage until the resource arrives.
// This empty image may be cached by SVG resources which must be invalidated.
if (SVGResources* resources = SVGResourcesCache::cachedResourcesForRenderObject(this))
resources->removeClientFromCache(this);
// Eventually notify parent resources, that we've changed.
RenderSVGResource::markForLayoutAndParentResourceInvalidation(this, false);
repaint();
}
void RenderSVGImage::addFocusRingRects(Vector<IntRect>& rects, int, int)
{
// this is called from paint() after the localTransform has already been applied
IntRect contentRect = enclosingIntRect(repaintRectInLocalCoordinates());
if (!contentRect.isEmpty())
rects.append(contentRect);
}
} // namespace WebCore
#endif // ENABLE(SVG)
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