WebCore/rendering/RenderSVGContainer.h

/*
    Copyright (C) 2004, 2005 Nikolas Zimmermann <wildfox@kde.org>
                  2004, 2005 Rob Buis <buis@kde.org>

    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., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.
*/

#ifndef RenderSVGContainer_H
#define RenderSVGContainer_H
#ifdef SVG_SUPPORT

#include "RenderContainer.h"
#include "RenderPath.h"

namespace WebCore {

enum KCAlign {
    ALIGN_NONE = 0,
    ALIGN_XMINYMIN = 1,
    ALIGN_XMIDYMIN = 2,
    ALIGN_XMAXYMIN = 3,
    ALIGN_XMINYMID = 4,
    ALIGN_XMIDYMID = 5,
    ALIGN_XMAXYMID = 6,
    ALIGN_XMINYMAX = 7,
    ALIGN_XMIDYMAX = 8,
    ALIGN_XMAXYMAX = 9
};

class SVGElement;

class RenderSVGContainer : public RenderContainer {
public:
    RenderSVGContainer(SVGStyledElement*);
    ~RenderSVGContainer();

    // Some containers do not want it's children
    // to be drawn, because they may be 'referenced'
    // Example: <marker> children in SVG
    void setDrawsContents(bool);
    bool drawsContents() const;

    virtual bool isKCanvasContainer() const { return true; }
    virtual const char* renderName() const { return "KCanvasContainer"; }
    
    virtual bool canHaveChildren() const;
    
    virtual bool requiresLayer();
    virtual short lineHeight(bool b, bool isRootLineBox = false) const;
    virtual short baselinePosition(bool b, bool isRootLineBox = false) const;
    
    virtual void calcMinMaxWidth();
    virtual void layout();
    virtual void paint(PaintInfo&, int parentX, int parentY);
    
    virtual IntRect getAbsoluteRepaintRect();

    virtual void computeAbsoluteRepaintRect(IntRect& r, bool f);

    virtual AffineTransform absoluteTransform() const;

    bool fillContains(const FloatPoint&) const;
    bool strokeContains(const FloatPoint&) const;
    FloatRect relativeBBox(bool includeStroke = true) const;
    
    virtual AffineTransform localTransform() const;
    void setLocalTransform(const AffineTransform&);
   
    FloatRect viewport() const;

    void setViewBox(const FloatRect&);
    FloatRect viewBox() const;

    void setAlign(KCAlign);
    KCAlign align() const;

    void setSlice(bool);
    bool slice() const;
    
    AffineTransform viewportTransform() const;
    
private:
    void calcViewport(); 
    AffineTransform getAspectRatio(const FloatRect& logical, const FloatRect& physical) const;

    bool m_drawsContents : 1;
    bool m_slice : 1;
    AffineTransform m_matrix;
    
    FloatRect m_viewport;
    FloatRect m_viewBox;
    KCAlign m_align;
    IntRect m_absoluteBounds;
};

} // namespace WebCore

#endif // SVG_SUPPORT
#endif // RenderSVGContainer_H

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