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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 Computer, Inc
* Copyright (C) 2009 Google, Inc.
* Copyright (C) 2011 Renata Hodovan <reni@webkit.org>
* Copyright (C) 2011 University of Szeged
*
* 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.
*/
#ifndef RenderSVGShape_h
#define RenderSVGShape_h
#if ENABLE(SVG)
#include "AffineTransform.h"
#include "FloatRect.h"
#include "RenderSVGModelObject.h"
#include "SVGMarkerData.h"
#include "StrokeStyleApplier.h"
#include <wtf/OwnPtr.h>
#include <wtf/Vector.h>
namespace WebCore {
class FloatPoint;
class GraphicsContextStateSaver;
class RenderSVGContainer;
class RenderSVGPath;
class RenderSVGResource;
class SVGStyledTransformableElement;
class BoundingRectStrokeStyleApplier : public StrokeStyleApplier {
public:
BoundingRectStrokeStyleApplier(const RenderObject* object, RenderStyle* style)
: m_object(object)
, m_style(style)
{
ASSERT(style);
ASSERT(object);
}
void strokeStyle(GraphicsContext* context)
{
SVGRenderSupport::applyStrokeStyleToContext(context, m_style, m_object);
}
private:
const RenderObject* m_object;
RenderStyle* m_style;
};
class RenderSVGShape : public RenderSVGModelObject {
public:
explicit RenderSVGShape(SVGStyledTransformableElement*);
RenderSVGShape(SVGStyledTransformableElement*, Path*, bool);
virtual ~RenderSVGShape();
void setNeedsShapeUpdate() { m_needsShapeUpdate = true; }
virtual void setNeedsBoundariesUpdate() { m_needsBoundariesUpdate = true; }
virtual void setNeedsTransformUpdate() { m_needsTransformUpdate = true; }
virtual void fillShape(GraphicsContext*) const;
virtual void strokeShape(GraphicsContext*) const;
Path& path() const
{
ASSERT(m_path);
return *m_path;
}
protected:
virtual void updateShapeFromElement();
virtual bool isEmpty() const;
virtual bool shapeDependentStrokeContains(const FloatPoint&);
virtual bool shapeDependentFillContains(const FloatPoint&, const WindRule) const;
float strokeWidth() const;
bool hasPath() const { return m_path.get(); }
bool hasNonScalingStroke() const { return style()->svgStyle()->vectorEffect() == VE_NON_SCALING_STROKE; }
bool hasSmoothStroke() const;
FloatRect m_fillBoundingBox;
FloatRect m_strokeBoundingBox;
private:
// Hit-detection separated for the fill and the stroke
bool fillContains(const FloatPoint&, bool requiresFill = true, const WindRule fillRule = RULE_NONZERO);
bool strokeContains(const FloatPoint&, bool requiresStroke = true);
virtual FloatRect repaintRectInLocalCoordinates() const { return m_repaintBoundingBox; }
virtual const AffineTransform& localToParentTransform() const { return m_localTransform; }
virtual AffineTransform localTransform() const { return m_localTransform; }
virtual bool isSVGShape() const { return true; }
virtual const char* renderName() const { return "RenderSVGShape"; }
virtual void layout();
virtual void paint(PaintInfo&, const LayoutPoint&);
virtual void addFocusRingRects(Vector<IntRect>&, const LayoutPoint&);
virtual bool nodeAtFloatPoint(const HitTestRequest&, HitTestResult&, const FloatPoint& pointInParent, HitTestAction);
virtual FloatRect objectBoundingBox() const { return m_fillBoundingBox; }
virtual FloatRect strokeBoundingBox() const { return m_strokeBoundingBox; }
FloatRect calculateObjectBoundingBox() const;
FloatRect calculateStrokeBoundingBox() const;
void updateRepaintBoundingBox();
AffineTransform nonScalingStrokeTransform() const;
bool setupNonScalingStrokeContext(AffineTransform&, GraphicsContextStateSaver&);
Path* nonScalingStrokePath(const Path*, const AffineTransform&) const;
Path* zeroLengthLinecapPath(const FloatPoint&);
bool shouldStrokeZeroLengthSubpath() const;
FloatRect zeroLengthSubpathRect(const FloatPoint&, float) const;
void processZeroLengthSubpaths();
bool shouldGenerateMarkerPositions() const;
FloatRect markerRect(float strokeWidth) const;
void processMarkerPositions();
void fillShape(RenderStyle*, GraphicsContext*, Path*, RenderSVGShape*);
void strokePath(RenderStyle*, GraphicsContext*, Path*, RenderSVGResource*,
const Color&, int);
void fillAndStrokePath(GraphicsContext*);
void drawMarkers(PaintInfo&);
private:
FloatRect m_repaintBoundingBox;
AffineTransform m_localTransform;
OwnPtr<Path> m_path;
Vector<FloatPoint> m_zeroLengthLinecapLocations;
Vector<MarkerPosition> m_markerPositions;
bool m_needsBoundariesUpdate : 1;
bool m_needsShapeUpdate : 1;
bool m_needsTransformUpdate : 1;
};
inline RenderSVGShape* toRenderSVGShape(RenderObject* object)
{
ASSERT(!object || object->isSVGShape());
return static_cast<RenderSVGShape*>(object);
}
inline const RenderSVGShape* toRenderSVGShape(const RenderObject* object)
{
ASSERT(!object || object->isSVGShape());
return static_cast<const RenderSVGShape*>(object);
}
// This will catch anyone doing an unnecessary cast.
void toRenderSVGShape(const RenderSVGShape*);
}
#endif // ENABLE(SVG)
#endif
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