/*

 * Copyright (C) 2006 Nikolas Zimmermann <zimmermann@kde.org>

 * Copyright (C) Research In Motion Limited 2010. 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.

 *

 */

#ifndef RenderSVGResourcePattern_h

#define RenderSVGResourcePattern_h

#if ENABLE(SVG)

#include "AffineTransform.h"

#include "FloatRect.h"

#include "ImageBuffer.h"

#include "Pattern.h"

#include "RenderSVGResourceContainer.h"

#include "SVGPatternElement.h"

#include "SVGUnitTypes.h"

#include <wtf/HashMap.h>

#include <wtf/OwnPtr.h>

namespace WebCore {

struct PatternData {

    RefPtr<Pattern> pattern;

    FloatRect boundaries;

    AffineTransform transform;

};

struct PatternAttributes;

class RenderSVGResourcePattern : public RenderSVGResourceContainer {

public:

    RenderSVGResourcePattern(SVGPatternElement*);

    virtual ~RenderSVGResourcePattern();

    virtual const char* renderName() const { return "RenderSVGResourcePattern"; }

    virtual void invalidateClients();

    virtual void invalidateClient(RenderObject*);

    virtual bool applyResource(RenderObject*, RenderStyle*, GraphicsContext*&, unsigned short resourceMode);

    virtual void postApplyResource(RenderObject*, GraphicsContext*&, unsigned short resourceMode);

    virtual FloatRect resourceBoundingBox(RenderObject*) { return FloatRect(); }

    virtual RenderSVGResourceType resourceType() const { return s_resourceType; }

    static RenderSVGResourceType s_resourceType;

private:

    PassOwnPtr<ImageBuffer> createTileImage(PatternData*, const SVGPatternElement*, RenderObject*) const;

    void buildPattern(PatternData*, PassOwnPtr<ImageBuffer> tileImage) const;

    FloatRect calculatePatternBoundariesIncludingOverflow(PatternAttributes&, const FloatRect& objectBoundingBox,

                                                          const AffineTransform& viewBoxCTM, const FloatRect& patternBoundaries) const;

    virtual bool childElementReferencesResource(const SVGRenderStyle*, const String&) const;

    HashMap<RenderObject*, PatternData*> m_pattern;

};

}

#endif

#endif