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/*
* Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005, 2007, 2008 Rob Buis <buis@kde.org>
* Copyright (C) 2007 Eric Seidel <eric@webkit.org>
* Copyright (C) 2009 Google, Inc. All rights reserved.
* Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
*
* 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 "RenderSVGContainer.h"
#include "GraphicsContext.h"
#include "HitTestRequest.h"
#include "HitTestResult.h"
#include "LayoutRepainter.h"
#include "RenderIterator.h"
#include "RenderSVGResourceFilter.h"
#include "RenderTreeBuilder.h"
#include "RenderView.h"
#include "SVGRenderingContext.h"
#include "SVGResources.h"
#include "SVGResourcesCache.h"
#include <wtf/IsoMallocInlines.h>
#include <wtf/StackStats.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(RenderSVGContainer);
RenderSVGContainer::RenderSVGContainer(SVGElement& element, RenderStyle&& style)
: RenderSVGModelObject(element, WTFMove(style))
{
}
RenderSVGContainer::~RenderSVGContainer() = default;
void RenderSVGContainer::layout()
{
StackStats::LayoutCheckPoint layoutCheckPoint;
ASSERT(needsLayout());
// RenderSVGRoot disables paint offset cache for the SVG rendering tree.
ASSERT(!view().frameView().layoutContext().isPaintOffsetCacheEnabled());
LayoutRepainter repainter(*this, SVGRenderSupport::checkForSVGRepaintDuringLayout(*this) || selfWillPaint());
// Allow RenderSVGViewportContainer to update its viewport.
calcViewport();
// Allow RenderSVGTransformableContainer to update its transform.
bool updatedTransform = calculateLocalTransform();
// RenderSVGViewportContainer needs to set the 'layout size changed' flag.
determineIfLayoutSizeChanged();
SVGRenderSupport::layoutChildren(*this, selfNeedsLayout() || SVGRenderSupport::filtersForceContainerLayout(*this));
// Invalidate all resources of this client if our layout changed.
if (everHadLayout() && needsLayout())
SVGResourcesCache::clientLayoutChanged(*this);
// At this point LayoutRepainter already grabbed the old bounds,
// recalculate them now so repaintAfterLayout() uses the new bounds.
if (m_needsBoundariesUpdate || updatedTransform) {
updateCachedBoundaries();
m_needsBoundariesUpdate = false;
// If our bounds changed, notify the parents.
RenderSVGModelObject::setNeedsBoundariesUpdate();
}
repainter.repaintAfterLayout();
clearNeedsLayout();
}
bool RenderSVGContainer::selfWillPaint()
{
auto* resources = SVGResourcesCache::cachedResourcesForRenderer(*this);
return resources && resources->filter();
}
void RenderSVGContainer::paint(PaintInfo& paintInfo, const LayoutPoint&)
{
if (paintInfo.context().paintingDisabled())
return;
// Spec: groups w/o children still may render filter content.
if (!firstChild() && !selfWillPaint())
return;
FloatRect repaintRect = repaintRectInLocalCoordinates();
if (!SVGRenderSupport::paintInfoIntersectsRepaintRect(repaintRect, localToParentTransform(), paintInfo))
return;
PaintInfo childPaintInfo(paintInfo);
{
GraphicsContextStateSaver stateSaver(childPaintInfo.context());
// Let the RenderSVGViewportContainer subclass clip if necessary
applyViewportClip(childPaintInfo);
childPaintInfo.applyTransform(localToParentTransform());
SVGRenderingContext renderingContext;
bool continueRendering = true;
if (childPaintInfo.phase == PaintPhase::Foreground) {
renderingContext.prepareToRenderSVGContent(*this, childPaintInfo);
continueRendering = renderingContext.isRenderingPrepared();
}
if (continueRendering) {
childPaintInfo.updateSubtreePaintRootForChildren(this);
for (auto& child : childrenOfType<RenderElement>(*this))
child.paint(childPaintInfo, IntPoint());
}
}
// FIXME: This really should be drawn from local coordinates, but currently we hack it
// to avoid our clip killing our outline rect. Thus we translate our
// outline rect into parent coords before drawing.
// FIXME: This means our focus ring won't share our rotation like it should.
// We should instead disable our clip during PaintPhase::Outline
if (paintInfo.phase == PaintPhase::SelfOutline && style().outlineWidth() && style().visibility() == Visibility::Visible) {
IntRect paintRectInParent = enclosingIntRect(localToParentTransform().mapRect(repaintRect));
paintOutline(paintInfo, paintRectInParent);
}
}
// addFocusRingRects is called from paintOutline and needs to be in the same coordinates as the paintOuline call
void RenderSVGContainer::addFocusRingRects(Vector<LayoutRect>& rects, const LayoutPoint&, const RenderLayerModelObject*)
{
LayoutRect paintRectInParent = LayoutRect(localToParentTransform().mapRect(repaintRectInLocalCoordinates()));
if (!paintRectInParent.isEmpty())
rects.append(paintRectInParent);
}
void RenderSVGContainer::updateCachedBoundaries()
{
SVGRenderSupport::computeContainerBoundingBoxes(*this, m_objectBoundingBox, m_objectBoundingBoxValid, m_strokeBoundingBox, m_repaintBoundingBox);
SVGRenderSupport::intersectRepaintRectWithResources(*this, m_repaintBoundingBox);
}
bool RenderSVGContainer::nodeAtFloatPoint(const HitTestRequest& request, HitTestResult& result, const FloatPoint& pointInParent, HitTestAction hitTestAction)
{
// Give RenderSVGViewportContainer a chance to apply its viewport clip
if (!pointIsInsideViewportClip(pointInParent))
return false;
FloatPoint localPoint = localToParentTransform().inverse().valueOr(AffineTransform()).mapPoint(pointInParent);
if (!SVGRenderSupport::pointInClippingArea(*this, localPoint))
return false;
SVGHitTestCycleDetectionScope hitTestScope(*this);
for (RenderObject* child = lastChild(); child; child = child->previousSibling()) {
if (child->nodeAtFloatPoint(request, result, localPoint, hitTestAction)) {
updateHitTestResult(result, LayoutPoint(localPoint));
if (result.addNodeToListBasedTestResult(child->node(), request, localPoint) == HitTestProgress::Stop)
return true;
}
}
// Accessibility wants to return SVG containers, if appropriate.
if (request.type() & HitTestRequest::AccessibilityHitTest && m_objectBoundingBox.contains(localPoint)) {
updateHitTestResult(result, LayoutPoint(localPoint));
if (result.addNodeToListBasedTestResult(nodeForHitTest(), request, localPoint) == HitTestProgress::Stop)
return true;
}
// Spec: Only graphical elements can be targeted by the mouse, period.
// 16.4: "If there are no graphics elements whose relevant graphics content is under the pointer (i.e., there is no target element), the event is not dispatched."
return false;
}
}