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/*
* Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005, 2007 Rob Buis <buis@kde.org>
* Copyright (C) 2009-2018 Google, Inc. All rights reserved.
* Copyright (C) 2009-2025 Apple Inc. 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.
*/
#pragma once
#include "FloatRect.h"
#include "RenderReplaced.h"
#include "SVGRenderSupport.h"
#include <wtf/WeakHashSet.h>
namespace WebCore {
class AffineTransform;
class LegacyRenderSVGResourceContainer;
class SVGSVGElement;
class LegacyRenderSVGRoot final : public RenderReplaced {
WTF_MAKE_TZONE_OR_ISO_ALLOCATED(LegacyRenderSVGRoot);
WTF_OVERRIDE_DELETE_FOR_CHECKED_PTR(LegacyRenderSVGRoot);
public:
LegacyRenderSVGRoot(SVGSVGElement&, RenderStyle&&);
virtual ~LegacyRenderSVGRoot();
SVGSVGElement& svgSVGElement() const;
Ref<SVGSVGElement> protectedSVGSVGElement() const;
bool isEmbeddedThroughSVGImage() const;
bool isEmbeddedThroughFrameContainingSVGDocument() const;
void computeIntrinsicRatioInformation(FloatSize& intrinsicSize, FloatSize& intrinsicRatio) const override;
bool hasIntrinsicAspectRatio() const final;
bool isLayoutSizeChanged() const { return m_isLayoutSizeChanged; }
bool isInLayout() const { return m_inLayout; }
void setNeedsBoundariesUpdate() override { m_needsBoundariesOrTransformUpdate = true; }
void setNeedsTransformUpdate() override { m_needsBoundariesOrTransformUpdate = true; }
IntSize containerSize() const { return m_containerSize; }
void setContainerSize(const IntSize& containerSize) { m_containerSize = containerSize; }
bool hasRelativeDimensions() const override;
// localToBorderBoxTransform maps local SVG viewport coordinates to local CSS box coordinates.
const AffineTransform& localToBorderBoxTransform() const { return m_localToBorderBoxTransform; }
// The flag is cleared at the beginning of each layout() pass. Elements then call this
// method during layout when they are invalidated by a filter.
static void addResourceForClientInvalidation(LegacyRenderSVGResourceContainer*);
private:
void element() const = delete;
// Intentially left 'RenderSVGRoot' instead of 'LegacyRenderSVGRoot', to avoid breaking layout tests.
ASCIILiteral renderName() const override { return "RenderSVGRoot"_s; }
LayoutUnit computeReplacedLogicalWidth(ShouldComputePreferred = ShouldComputePreferred::ComputeActual) const override;
LayoutUnit computeReplacedLogicalHeight(std::optional<LayoutUnit> estimatedUsedWidth = std::nullopt) const override;
void layout() override;
void paintReplaced(PaintInfo&, const LayoutPoint&) override;
void willBeDestroyed() override;
void insertedIntoTree() override;
void willBeRemovedFromTree() override;
void styleDidChange(StyleDifference, const RenderStyle* oldStyle) override;
const AffineTransform& localToParentTransform() const override;
FloatRect objectBoundingBox() const override { return m_objectBoundingBox; }
FloatRect strokeBoundingBox() const override;
FloatRect repaintRectInLocalCoordinates(RepaintRectCalculation = RepaintRectCalculation::Fast) const override;
bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) override;
LayoutRect clippedOverflowRect(const RenderLayerModelObject* repaintContainer, VisibleRectContext) const override;
RepaintRects rectsForRepaintingAfterLayout(const RenderLayerModelObject* repaintContainer, RepaintOutlineBounds) const override;
LayoutRect localClippedOverflowRect(RepaintRectCalculation) const;
LayoutRect computeContentsInkOverflow() const;
std::optional<FloatRect> computeFloatVisibleRectInContainer(const FloatRect&, const RenderLayerModelObject* container, VisibleRectContext) const override;
void mapLocalToContainer(const RenderLayerModelObject* ancestorContainer, TransformState&, OptionSet<MapCoordinatesMode>, bool* wasFixed) const override;
const RenderObject* pushMappingToContainer(const RenderLayerModelObject* ancestorToStopAt, RenderGeometryMap&) const override;
bool canBeSelectionLeaf() const override { return false; }
bool canHaveChildren() const override { return true; }
bool shouldApplyViewportClip() const;
void updateCachedBoundaries();
void buildLocalToBorderBoxTransform();
FloatSize calculateIntrinsicSize() const;
IntSize m_containerSize;
FloatRect m_objectBoundingBox;
bool m_objectBoundingBoxValid { false };
bool m_inLayout { false };
mutable Markable<FloatRect, FloatRect::MarkableTraits> m_strokeBoundingBox;
FloatRect m_repaintBoundingBox;
mutable Markable<FloatRect, FloatRect::MarkableTraits> m_accurateRepaintBoundingBox;
mutable AffineTransform m_localToParentTransform;
AffineTransform m_localToBorderBoxTransform;
SingleThreadWeakHashSet<LegacyRenderSVGResourceContainer> m_resourcesNeedingToInvalidateClients;
bool m_isLayoutSizeChanged : 1;
bool m_needsBoundariesOrTransformUpdate : 1;
bool m_hasBoxDecorations : 1;
};
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_RENDER_OBJECT(LegacyRenderSVGRoot, isLegacyRenderSVGRoot())
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