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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 Google, Inc. All rights reserved.
* Copyright (C) 2009 Apple Inc. All rights reserved.
* Copyright (C) 2020, 2021 Igalia S.L.
*
* 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
#if ENABLE(LAYER_BASED_SVG_ENGINE)
#include "FloatRect.h"
#include "RenderReplaced.h"
#include "SVGBoundingBoxComputation.h"
namespace WebCore {
class AffineTransform;
class RenderSVGResourceContainer;
class SVGSVGElement;
class RenderSVGRoot final : public RenderReplaced {
WTF_MAKE_ISO_ALLOCATED(RenderSVGRoot);
public:
RenderSVGRoot(SVGSVGElement&, RenderStyle&&);
virtual ~RenderSVGRoot();
SVGSVGElement& svgSVGElement() const;
FloatSize currentViewportSize() const;
const AffineTransform& viewBoxTransform() const { return m_viewBoxTransform; }
const AffineTransform& supplementalLocalToParentTransform() const { return m_supplementalLocalToParentTransform; }
bool isEmbeddedThroughSVGImage() const;
bool isEmbeddedThroughFrameContainingSVGDocument() const;
void computeIntrinsicRatioInformation(FloatSize& intrinsicSize, double& intrinsicRatio) const override;
bool isLayoutSizeChanged() const { return m_isLayoutSizeChanged; }
bool didTransformToRootUpdate() const { return m_didTransformToRootUpdate; }
bool isInLayout() const { return m_inLayout; }
IntSize containerSize() const { return m_containerSize; }
void setContainerSize(const IntSize& containerSize) { m_containerSize = containerSize; }
bool hasRelativeDimensions() const override;
// 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(RenderSVGResourceContainer*);
bool shouldApplyViewportClip() const;
void applyTransform(TransformationMatrix&, const FloatRect& boundingBox, OptionSet<RenderStyle::TransformOperationOption> = RenderStyle::allTransformOperations) const final;
FloatRect objectBoundingBox() const final { return m_objectBoundingBox; }
FloatRect strokeBoundingBox() const final { return m_strokeBoundingBox; }
FloatRect repaintRectInLocalCoordinates() const final { return SVGBoundingBoxComputation::computeRepaintBoundingBox(*this); }
LayoutRect visualOverflowRectEquivalent() const { return SVGBoundingBoxComputation::computeVisualOverflowRect(*this); }
private:
void element() const = delete;
bool isSVGRoot() const override { return true; }
const char* renderName() const override { return "RenderSVGRoot"; }
bool requiresLayer() const override { return true; }
// To prevent certain legacy code paths to hit assertions in debug builds, when switching off LBSE (during the teardown of the LBSE tree).
std::optional<FloatRect> computeFloatVisibleRectInContainer(const FloatRect&, const RenderLayerModelObject*, VisibleRectContext) const final { return std::nullopt; }
LayoutUnit computeReplacedLogicalWidth(ShouldComputePreferred = ComputeActual) const override;
LayoutUnit computeReplacedLogicalHeight(std::optional<LayoutUnit> estimatedUsedWidth = std::nullopt) const override;
void layout() override;
void paint(PaintInfo&, const LayoutPoint&) override;
void paintObject(PaintInfo&, const LayoutPoint&) override;
void paintContents(PaintInfo&, const LayoutPoint&);
void willBeDestroyed() override;
void insertedIntoTree(IsInternalMove) override;
void willBeRemovedFromTree(IsInternalMove) override;
void styleDidChange(StyleDifference, const RenderStyle* oldStyle) override;
void updateLayerInformation();
void updateFromStyle() override;
bool fillContains(const FloatPoint&) const;
bool strokeContains(const FloatPoint&) const;
bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) override;
void computeTransformationMatrices();
LayoutRect overflowClipRect(const LayoutPoint& location, RenderFragmentContainer* = nullptr, OverlayScrollbarSizeRelevancy = IgnoreOverlayScrollbarSize, PaintPhase = PaintPhase::BlockBackground) const final;
LayoutRect clippedOverflowRect(const RenderLayerModelObject* repaintContainer, VisibleRectContext) const override;
void mapLocalToContainer(const RenderLayerModelObject* ancestorContainer, TransformState&, OptionSet<MapCoordinatesMode>, bool* wasFixed) const override;
void absoluteRects(Vector<IntRect>&, const LayoutPoint& accumulatedOffset) const override;
void absoluteQuads(Vector<FloatQuad>&, bool* wasFixed) const override;
bool canBeSelectionLeaf() const override { return false; }
bool canHaveChildren() const override { return true; }
void buildViewportTransform();
bool m_inLayout { false };
bool m_didTransformToRootUpdate { false };
bool m_isLayoutSizeChanged { false };
IntSize m_containerSize;
FloatRect m_objectBoundingBox;
FloatRect m_strokeBoundingBox;
AffineTransform m_viewBoxTransform;
AffineTransform m_supplementalLocalToParentTransform;
HashSet<RenderSVGResourceContainer*> m_resourcesNeedingToInvalidateClients;
};
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_RENDER_OBJECT(RenderSVGRoot, isSVGRoot())
#endif // ENABLE(LAYER_BASED_SVG_ENGINE)
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