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/*
* Copyright (C) 2006 Apple Inc.
* Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
* 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"
#include "RenderSVGBlock.h"
#include "LegacyRenderSVGResource.h"
#include "RenderBoxModelObjectInlines.h"
#include "RenderSVGBlockInlines.h"
#include "RenderView.h"
#include "SVGGraphicsElement.h"
#include "SVGRenderSupport.h"
#include "SVGResourcesCache.h"
#include "StyleInheritedData.h"
#include <wtf/TZoneMallocInlines.h>
namespace WebCore {
WTF_MAKE_TZONE_OR_ISO_ALLOCATED_IMPL(RenderSVGBlock);
RenderSVGBlock::RenderSVGBlock(Type type, SVGGraphicsElement& element, RenderStyle&& style)
: RenderBlockFlow(type, element, WTFMove(style), BlockFlowFlag::IsSVGBlock)
{
}
RenderSVGBlock::~RenderSVGBlock() = default;
void RenderSVGBlock::updateFromStyle()
{
RenderBlockFlow::updateFromStyle();
if (document().settings().layerBasedSVGEngineEnabled()) {
updateHasSVGTransformFlags();
return;
}
// RenderSVGlock, used by Render(SVGText|ForeignObject), is not allowed to call setHasNonVisibleOverflow(true).
// RenderBlock assumes a layer to be present when the overflow clip functionality is requested. Both
// Render(SVGText|ForeignObject) return 'false' on 'requiresLayer'. Fine for RenderSVGText.
//
// If we want to support overflow rules for <foreignObject> we can choose between two solutions:
// a) make LegacyRenderSVGForeignObject require layers and SVG layer aware
// b) refactor overflow logic out of RenderLayer (as suggested by dhyatt), which is a large task
//
// Until this is resolved, disable overflow support. Opera/FF don't support it as well at the moment (Feb 2010).
//
// Note: This does NOT affect overflow handling on outer/inner <svg> elements - this is handled
// manually by LegacyRenderSVGRoot - which owns the documents enclosing root layer and thus works fine.
setHasNonVisibleOverflow(false);
}
bool RenderSVGBlock::needsHasSVGTransformFlags() const
{
return protectedGraphicsElement()->hasTransformRelatedAttributes();
}
void RenderSVGBlock::boundingRects(Vector<LayoutRect>& rects, const LayoutPoint& accumulatedOffset) const
{
if (document().settings().layerBasedSVGEngineEnabled()) {
rects.append({ accumulatedOffset, size() });
return;
}
// This code path should never be taken for SVG, as we're assuming useTransforms=true everywhere, absoluteQuads should be used.
ASSERT_NOT_REACHED();
}
void RenderSVGBlock::absoluteQuads(Vector<FloatQuad>& quads, bool* wasFixed) const
{
quads.append(localToAbsoluteQuad(FloatRect { { }, size() }, UseTransforms, wasFixed));
}
void RenderSVGBlock::willBeDestroyed()
{
if (document().settings().layerBasedSVGEngineEnabled()) {
RenderBlockFlow::willBeDestroyed();
return;
}
SVGResourcesCache::clientDestroyed(*this);
RenderBlockFlow::willBeDestroyed();
}
void RenderSVGBlock::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
{
if (document().settings().layerBasedSVGEngineEnabled()) {
RenderBlockFlow::styleDidChange(diff, oldStyle);
return;
}
if (diff == StyleDifference::Layout)
invalidateCachedBoundaries();
RenderBlockFlow::styleDidChange(diff, oldStyle);
SVGResourcesCache::clientStyleChanged(*this, diff, oldStyle, style());
}
FloatRect RenderSVGBlock::referenceBoxRect(CSSBoxType boxType) const
{
if (document().settings().layerBasedSVGEngineEnabled()) {
// Skip RenderBox::referenceBoxRect() implementation (generic CSS, not SVG), if LBSE is enabled.
return RenderElement::referenceBoxRect(boxType);
}
return RenderBlockFlow::referenceBoxRect(boxType);
}
void RenderSVGBlock::computeOverflow(LayoutUnit oldClientAfterEdge, bool recomputeFloats)
{
RenderBlockFlow::computeOverflow(oldClientAfterEdge, recomputeFloats);
if (document().settings().layerBasedSVGEngineEnabled())
return;
const auto* textShadow = style().textShadow();
if (!textShadow)
return;
LayoutRect borderRect = borderBoxRect();
textShadow->adjustRectForShadow(borderRect);
addVisualOverflow(snappedIntRect(borderRect));
}
LayoutRect RenderSVGBlock::clippedOverflowRect(const RenderLayerModelObject* repaintContainer, VisibleRectContext context) const
{
if (document().settings().layerBasedSVGEngineEnabled())
return RenderBlockFlow::clippedOverflowRect(repaintContainer, context);
return SVGRenderSupport::clippedOverflowRectForRepaint(*this, repaintContainer, context);
}
auto RenderSVGBlock::rectsForRepaintingAfterLayout(const RenderLayerModelObject* repaintContainer, RepaintOutlineBounds repaintOutlineBounds) const -> RepaintRects
{
if (document().settings().layerBasedSVGEngineEnabled())
return RenderBlockFlow::rectsForRepaintingAfterLayout(repaintContainer, repaintOutlineBounds);
auto rects = RepaintRects { SVGRenderSupport::clippedOverflowRectForRepaint(*this, repaintContainer, visibleRectContextForRepaint()) };
if (repaintOutlineBounds == RepaintOutlineBounds::Yes)
rects.outlineBoundsRect = outlineBoundsForRepaint(repaintContainer);
return rects;
}
auto RenderSVGBlock::computeVisibleRectsInContainer(const RepaintRects& rects, const RenderLayerModelObject* container, VisibleRectContext context) const -> std::optional<RepaintRects>
{
if (document().settings().layerBasedSVGEngineEnabled())
return computeVisibleRectsInSVGContainer(rects, container, context);
// FIXME: computeFloatVisibleRectInContainer() needs to be merged with computeVisibleRectsInContainer().
auto adjustedRect = computeFloatVisibleRectInContainer(rects.clippedOverflowRect, container, context);
if (adjustedRect)
return RepaintRects { enclosingLayoutRect(*adjustedRect) };
return std::nullopt;
}
std::optional<FloatRect> RenderSVGBlock::computeFloatVisibleRectInContainer(const FloatRect& rect, const RenderLayerModelObject* container, VisibleRectContext context) const
{
ASSERT(!document().settings().layerBasedSVGEngineEnabled());
return SVGRenderSupport::computeFloatVisibleRectInContainer(*this, rect, container, context);
}
void RenderSVGBlock::mapLocalToContainer(const RenderLayerModelObject* ancestorContainer, TransformState& transformState, OptionSet<MapCoordinatesMode> mode, bool* wasFixed) const
{
if (document().settings().layerBasedSVGEngineEnabled()) {
mapLocalToSVGContainer(ancestorContainer, transformState, mode, wasFixed);
return;
}
SVGRenderSupport::mapLocalToContainer(*this, ancestorContainer, transformState, wasFixed);
}
const RenderObject* RenderSVGBlock::pushMappingToContainer(const RenderLayerModelObject* ancestorToStopAt, RenderGeometryMap& geometryMap) const
{
if (document().settings().layerBasedSVGEngineEnabled())
return RenderBlock::pushMappingToContainer(ancestorToStopAt, geometryMap);
return SVGRenderSupport::pushMappingToContainer(*this, ancestorToStopAt, geometryMap);
}
LayoutSize RenderSVGBlock::offsetFromContainer(RenderElement& container, const LayoutPoint&, bool*) const
{
ASSERT_UNUSED(container, &container == this->container());
ASSERT(!isInFlowPositioned());
ASSERT(!isAbsolutelyPositioned());
ASSERT(!isInline());
return locationOffset();
}
}
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