renderpath.h

linux下开源浏览器WebKit的源码,市面上的很多商用浏览器都是移植自WebKit

/*
    Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <[e-mail]>
                  2004, 2005 Rob Buis <[e-mail]>
                  2005 Eric Seidel <[e-mail]>
                  2006 Apple Computer, Inc

    This file is part of the KDE project

    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
    aint 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 RenderPath_h
#define RenderPath_h

#if ENABLE(SVG)

#include "TransformationMatrix.h"
#include "FloatRect.h"

#include "RenderObject.h"

namespace WebCore {

class FloatPoint;
class RenderSVGContainer;
class SVGStyledTransformableElement;

class RenderPath : public RenderObject {
public:
    RenderPath(SVGStyledTransformableElement*);

    // Hit-detection seperated for the fill and the stroke
    bool fillContains(const FloatPoint&, bool requiresFill = true) const;
    bool strokeContains(const FloatPoint&, bool requiresStroke = true) const;

    // Returns an unscaled bounding box (not even including localTransform()) for this vector path
    virtual FloatRect relativeBBox(bool includeStroke = true) const;

    const Path& path() const;
    void setPath(const Path& newPath);

    virtual bool isRenderPath() const { return true; }
    virtual const char* renderName() const { return "RenderPath"; }
    
    bool calculateLocalTransform();
    virtual TransformationMatrix localTransform() const;
    
    virtual void layout();
    virtual IntRect clippedOverflowRectForRepaint(RenderBoxModelObject* repaintContainer);
    virtual bool requiresLayer() const { return false; }
    virtual int lineHeight(bool b, bool isRootLineBox = false) const;
    virtual int baselinePosition(bool b, bool isRootLineBox = false) const;
    virtual void paint(PaintInfo&, int parentX, int parentY);

    virtual void absoluteRects(Vector<IntRect>&, int tx, int ty, bool topLevel = true);
    virtual void absoluteQuads(Vector<FloatQuad>&, bool topLevel = true);
    virtual void addFocusRingRects(GraphicsContext*, int tx, int ty);

    virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, int x, int y, int tx, int ty, HitTestAction);

    FloatRect drawMarkersIfNeeded(GraphicsContext*, const FloatRect&, const Path&) const;
    
private:
    FloatPoint mapAbsolutePointToLocal(const FloatPoint&) const;
    virtual IntRect outlineBoundsForRepaint(RenderBoxModelObject* repaintContainer) const;

    mutable Path m_path;
    mutable FloatRect m_fillBBox;
    mutable FloatRect m_strokeBbox;
    FloatRect m_markerBounds;
    TransformationMatrix m_localTransform;
    IntRect m_absoluteBounds;
};

}

#endif // ENABLE(SVG)
#endif

// vim:ts=4:noet