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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 "core/layout/svg/LayoutSVGImage.h"
#include "core/layout/HitTestResult.h"
#include "core/layout/ImageQualityController.h"
#include "core/layout/LayoutAnalyzer.h"
#include "core/layout/LayoutImageResource.h"
#include "core/layout/PointerEventsHitRules.h"
#include "core/layout/svg/LayoutSVGResourceContainer.h"
#include "core/layout/svg/SVGLayoutSupport.h"
#include "core/layout/svg/SVGResources.h"
#include "core/layout/svg/SVGResourcesCache.h"
#include "core/paint/SVGImagePainter.h"
#include "core/svg/SVGImageElement.h"
#include "platform/LengthFunctions.h"
#include "third_party/skia/include/core/SkPicture.h"
namespace blink {
LayoutSVGImage::LayoutSVGImage(SVGImageElement* impl)
: LayoutSVGModelObject(impl)
, m_needsBoundariesUpdate(true)
, m_needsTransformUpdate(true)
, m_imageResource(LayoutImageResource::create())
{
m_imageResource->initialize(this, nullptr);
}
LayoutSVGImage::~LayoutSVGImage()
{
}
void LayoutSVGImage::willBeDestroyed()
{
ImageQualityController::remove(*this);
m_imageResource->shutdown();
LayoutSVGModelObject::willBeDestroyed();
}
void LayoutSVGImage::updateBoundingBox()
{
FloatRect oldBoundaries = m_objectBoundingBox;
SVGLengthContext lengthContext(element());
m_objectBoundingBox = FloatRect(
lengthContext.valueForLength(styleRef().svgStyle().x(), styleRef(), SVGLengthMode::Width),
lengthContext.valueForLength(styleRef().svgStyle().y(), styleRef(), SVGLengthMode::Height),
lengthContext.valueForLength(styleRef().width(), styleRef(), SVGLengthMode::Width),
lengthContext.valueForLength(styleRef().height(), styleRef(), SVGLengthMode::Height));
m_needsBoundariesUpdate |= oldBoundaries != m_objectBoundingBox;
}
void LayoutSVGImage::layout()
{
ASSERT(needsLayout());
LayoutAnalyzer::Scope analyzer(*this);
updateBoundingBox();
bool transformOrBoundariesUpdate = m_needsTransformUpdate || m_needsBoundariesUpdate;
if (m_needsTransformUpdate) {
m_localTransform = toSVGImageElement(element())->calculateAnimatedLocalTransform();
m_needsTransformUpdate = false;
}
if (m_needsBoundariesUpdate) {
m_paintInvalidationBoundingBox = m_objectBoundingBox;
SVGLayoutSupport::intersectPaintInvalidationRectWithResources(this, m_paintInvalidationBoundingBox);
m_needsBoundariesUpdate = false;
}
// Invalidate all resources of this client if our layout changed.
if (everHadLayout() && selfNeedsLayout())
SVGResourcesCache::clientLayoutChanged(this);
// If our bounds changed, notify the parents.
if (transformOrBoundariesUpdate)
LayoutSVGModelObject::setNeedsBoundariesUpdate();
clearNeedsLayout();
}
void LayoutSVGImage::paint(const PaintInfo& paintInfo, const LayoutPoint&) const
{
SVGImagePainter(*this).paint(paintInfo);
}
bool LayoutSVGImage::nodeAtFloatPoint(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, result.hitTestRequest(), style()->pointerEvents());
bool isVisible = (style()->visibility() == VISIBLE);
if (isVisible || !hitRules.requireVisible) {
FloatPoint localPoint;
if (!SVGLayoutSupport::transformToUserSpaceAndCheckClipping(this, localToSVGParentTransform(), pointInParent, localPoint))
return false;
if (hitRules.canHitFill || hitRules.canHitBoundingBox) {
if (m_objectBoundingBox.contains(localPoint)) {
const LayoutPoint& localLayoutPoint = roundedLayoutPoint(localPoint);
updateHitTestResult(result, localLayoutPoint);
if (result.addNodeToListBasedTestResult(element(), localLayoutPoint) == StopHitTesting)
return true;
}
}
}
return false;
}
void LayoutSVGImage::imageChanged(WrappedImagePtr, const IntRect*)
{
// Notify parent resources that we've changed. This also invalidates
// references from resources (filters) that may have a cached
// representation of this image/layout object.
LayoutSVGResourceContainer::markForLayoutAndParentResourceInvalidation(this, false);
setShouldDoFullPaintInvalidation();
}
void LayoutSVGImage::addOutlineRects(Vector<LayoutRect>& rects, const LayoutPoint&, IncludeBlockVisualOverflowOrNot) const
{
// this is called from paint() after the localTransform has already been applied
rects.append(LayoutRect(paintInvalidationRectInLocalSVGCoordinates()));
}
} // namespace blink
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