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/*
* Copyright (C) 2006-2025 Apple Inc. All rights reserved.
* Copyright (C) 2016 Google Inc. All rights reserved.
* Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) Research In Motion Limited 2010-2012. 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 "AffineTransform.h"
#include "RenderSVGBlock.h"
#include "SVGBoundingBoxComputation.h"
#include "SVGTextChunk.h"
#include "SVGTextLayoutAttributesBuilder.h"
namespace WebCore {
namespace InlineIterator {
class InlineBoxIterator;
}
class RenderSVGInlineText;
class SVGRootInlineBox;
class SVGTextElement;
class SVGTextLayoutEngine;
class RenderSVGText final : public RenderSVGBlock {
WTF_MAKE_TZONE_OR_ISO_ALLOCATED(RenderSVGText);
WTF_OVERRIDE_DELETE_FOR_CHECKED_PTR(RenderSVGText);
public:
RenderSVGText(SVGTextElement&, RenderStyle&&);
virtual ~RenderSVGText();
SVGTextElement& textElement() const;
Ref<SVGTextElement> protectedTextElement() const;
bool isChildAllowed(const RenderObject&, const RenderStyle&) const override;
void setNeedsPositioningValuesUpdate() { m_needsPositioningValuesUpdate = true; }
void setNeedsTextMetricsUpdate() { m_needsTextMetricsUpdate = true; }
// FIXME: [LBSE] Only needed for legacy SVG engine.
void setNeedsTransformUpdate() override { m_needsTransformUpdate = true; }
static RenderSVGText* locateRenderSVGTextAncestor(RenderObject&);
static const RenderSVGText* locateRenderSVGTextAncestor(const RenderObject&);
bool needsReordering() const { return m_needsReordering; }
Vector<SVGTextLayoutAttributes*>& layoutAttributes() { return m_layoutAttributes; }
void subtreeChildWasAdded(RenderObject*);
void subtreeChildWillBeRemoved(RenderObject*, Vector<SVGTextLayoutAttributes*, 2>& affectedAttributes);
void subtreeChildWasRemoved(const Vector<SVGTextLayoutAttributes*, 2>& affectedAttributes);
void subtreeTextDidChange(RenderSVGInlineText*);
FloatRect objectBoundingBox() const final { return m_objectBoundingBox; }
FloatRect strokeBoundingBox() const final;
bool isObjectBoundingBoxValid() const;
FloatRect repaintRectInLocalCoordinates(RepaintRectCalculation = RepaintRectCalculation::Fast) const final;
LayoutRect visualOverflowRectEquivalent() const { return SVGBoundingBoxComputation::computeVisualOverflowRect(*this); }
void updatePositionAndOverflow(const FloatRect&);
SVGRootInlineBox* legacyRootBox() const;
private:
void graphicsElement() const = delete;
ASCIILiteral renderName() const override { return "RenderSVGText"_s; }
void paint(PaintInfo&, const LayoutPoint&) override;
void paintInlineChildren(PaintInfo&, const LayoutPoint&) override;
bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) override;
bool hitTestInlineChildren(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) override;
void applyTransform(TransformationMatrix&, const RenderStyle&, const FloatRect& boundingBox, OptionSet<RenderStyle::TransformOperationOption>) const final;
VisiblePosition positionForPoint(const LayoutPoint&, HitTestSource, const RenderFragmentContainer*) override;
bool requiresLayer() const override
{
if (document().settings().layerBasedSVGEngineEnabled())
return true;
return false;
}
void layout() override;
void computePerCharacterLayoutInformation();
void layoutCharactersInTextBoxes(const InlineIterator::InlineBoxIterator&, SVGTextLayoutEngine&);
FloatRect layoutChildBoxes(LegacyInlineFlowBox*, SVGTextFragmentMap&);
void layoutRootBox(const FloatRect&);
void reorderValueListsToLogicalOrder();
void willBeDestroyed() override;
void styleDidChange(StyleDifference, const RenderStyle* oldStyle) final;
// FIXME: [LBSE] Begin code only needed for legacy SVG engine.
bool nodeAtFloatPoint(const HitTestRequest&, HitTestResult&, const FloatPoint& pointInParent, HitTestAction) override;
const AffineTransform& localToParentTransform() const override { return m_localTransform; }
AffineTransform localTransform() const override { return m_localTransform; }
// FIXME: [LBSE] End code only needed for legacy SVG engine.
bool shouldHandleSubtreeMutations() const;
bool m_needsReordering : 1 { false };
bool m_needsPositioningValuesUpdate : 1 { false };
bool m_needsTransformUpdate : 1 { true }; // FIXME: [LBSE] Only needed for legacy SVG engine.
bool m_needsTextMetricsUpdate : 1 { false };
bool m_hasPerformedLayout : 1 { false }; // Needed to distinguish between when we perform a full pass of layout and everHadLayout (which can be set be content visibility for skipped content).
AffineTransform m_localTransform; // FIXME: [LBSE] Only needed for legacy SVG engine.
SVGTextLayoutAttributesBuilder m_layoutAttributesBuilder;
Vector<SVGTextLayoutAttributes*> m_layoutAttributes;
FloatRect m_objectBoundingBox;
};
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_RENDER_OBJECT(RenderSVGText, isRenderSVGText())
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