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/*
* Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
* Copyright (C) 2005 Eric Seidel <eric@webkit.org>
* Copyright (C) 2006 Apple Inc.
* Copyright (C) 2009 Google, Inc.
* Copyright (C) 2011 Renata Hodovan <reni@webkit.org>
* Copyright (C) 2011 University of Szeged
* Copyright (C) 2020, 2021, 2022 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
#include "AffineTransform.h"
#include "FloatRect.h"
#include "RenderSVGModelObject.h"
#include "SVGBoundingBoxComputation.h"
#include "SVGGraphicsElement.h"
#include "SVGMarkerData.h"
#include <memory>
#include <wtf/Vector.h>
namespace WebCore {
class FloatPoint;
class GraphicsContextStateSaver;
class SVGGraphicsElement;
class RenderSVGShape : public RenderSVGModelObject {
WTF_MAKE_TZONE_OR_ISO_ALLOCATED(RenderSVGShape);
WTF_OVERRIDE_DELETE_FOR_CHECKED_PTR(RenderSVGShape);
public:
friend FloatRect SVGRenderSupport::calculateApproximateStrokeBoundingBox(const RenderElement&);
enum class ShapeType : uint8_t {
Empty,
Path,
Line,
Rectangle,
RoundedRectangle,
Ellipse,
Circle,
};
enum PointCoordinateSpace {
GlobalCoordinateSpace,
LocalCoordinateSpace
};
RenderSVGShape(Type, SVGGraphicsElement&, RenderStyle&&);
virtual ~RenderSVGShape();
inline SVGGraphicsElement& graphicsElement() const;
inline Ref<SVGGraphicsElement> protectedGraphicsElement() const;
void setNeedsShapeUpdate() { m_needsShapeUpdate = true; }
virtual void fillShape(GraphicsContext&) const;
virtual void strokeShape(GraphicsContext&) const;
virtual bool isRenderingDisabled() const = 0;
bool isPointInFill(const FloatPoint&);
bool isPointInStroke(const FloatPoint&);
float getTotalLength() const;
FloatPoint getPointAtLength(float distance) const;
bool hasPath() const { return m_path.get(); }
Path& path() const
{
ASSERT(m_path);
return *m_path;
}
void clearPath() { m_path = nullptr; }
ShapeType shapeType() const { return m_shapeType; }
FloatRect objectBoundingBox() const final { return m_fillBoundingBox; }
FloatRect strokeBoundingBox() const final;
FloatRect approximateStrokeBoundingBox() const;
FloatRect repaintRectInLocalCoordinates(RepaintRectCalculation = RepaintRectCalculation::Fast) const final { return SVGBoundingBoxComputation::computeRepaintBoundingBox(*this); }
bool needsHasSVGTransformFlags() const final;
void applyTransform(TransformationMatrix&, const RenderStyle&, const FloatRect& boundingBox, OptionSet<RenderStyle::TransformOperationOption>) const final;
AffineTransform nonScalingStrokeTransform() const;
protected:
void element() const = delete;
Path& ensurePath();
virtual void updateShapeFromElement() = 0;
virtual bool isEmpty() const;
virtual bool shapeDependentStrokeContains(const FloatPoint&, PointCoordinateSpace = GlobalCoordinateSpace);
virtual bool shapeDependentFillContains(const FloatPoint&, const WindRule) const;
float strokeWidth() const;
inline bool hasNonScalingStroke() const;
Path* nonScalingStrokePath(const Path*, const AffineTransform&) const;
virtual FloatRect adjustStrokeBoundingBoxForZeroLengthLinecaps(RepaintRectCalculation, FloatRect strokeBoundingBox) const { return strokeBoundingBox; }
private:
// Hit-detection separated for the fill and the stroke
bool fillContains(const FloatPoint&, bool requiresFill = true, const WindRule fillRule = WindRule::NonZero);
bool strokeContains(const FloatPoint&, bool requiresStroke = true);
bool canHaveChildren() const final { return false; }
ASCIILiteral renderName() const override { return "RenderSVGShape"_s; }
void layout() final;
void paint(PaintInfo&, const LayoutPoint&) final;
bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) override;
FloatRect calculateStrokeBoundingBox() const;
bool setupNonScalingStrokeContext(AffineTransform&, GraphicsContextStateSaver&);
std::unique_ptr<Path> createPath() const;
void fillShape(const RenderStyle&, GraphicsContext&);
void strokeShape(const RenderStyle&, GraphicsContext&);
void fillStrokeMarkers(PaintInfo&);
virtual void drawMarkers(PaintInfo&) { }
void styleWillChange(StyleDifference, const RenderStyle& newStyle) override;
FloatRect calculateApproximateStrokeBoundingBox() const;
protected:
FloatRect m_fillBoundingBox;
mutable Markable<FloatRect, FloatRect::MarkableTraits> m_strokeBoundingBox;
mutable Markable<FloatRect, FloatRect::MarkableTraits> m_approximateStrokeBoundingBox;
private:
bool m_needsShapeUpdate { true };
protected:
ShapeType m_shapeType : 3 { ShapeType::Empty };
private:
std::unique_ptr<Path> m_path;
};
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_RENDER_OBJECT(RenderSVGShape, isRenderSVGShape())
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