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      1 /*
      2  * Copyright (C) 2006 Nikolas Zimmermann <zimmermann (at) kde.org>
      3  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
      4  *
      5  * This library is free software; you can redistribute it and/or
      6  * modify it under the terms of the GNU Library General Public
      7  * License as published by the Free Software Foundation; either
      8  * version 2 of the License, or (at your option) any later version.
      9  *
     10  * This library is distributed in the hope that it will be useful,
     11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     13  * Library General Public License for more details.
     14  *
     15  * You should have received a copy of the GNU Library General Public License
     16  * along with this library; see the file COPYING.LIB.  If not, write to
     17  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     18  * Boston, MA 02110-1301, USA.
     19  */
     20 
     21 #ifndef RenderSVGResourcePattern_h
     22 #define RenderSVGResourcePattern_h
     23 
     24 #if ENABLE(SVG)
     25 #include "AffineTransform.h"
     26 #include "FloatRect.h"
     27 #include "ImageBuffer.h"
     28 #include "Pattern.h"
     29 #include "PatternAttributes.h"
     30 #include "RenderSVGResourceContainer.h"
     31 #include "SVGPatternElement.h"
     32 #include "SVGUnitTypes.h"
     33 
     34 #include <wtf/HashMap.h>
     35 #include <wtf/OwnPtr.h>
     36 
     37 namespace WebCore {
     38 
     39 struct PatternData {
     40     RefPtr<Pattern> pattern;
     41     AffineTransform transform;
     42 };
     43 
     44 class RenderSVGResourcePattern : public RenderSVGResourceContainer {
     45 public:
     46     RenderSVGResourcePattern(SVGPatternElement*);
     47     virtual ~RenderSVGResourcePattern();
     48 
     49     virtual const char* renderName() const { return "RenderSVGResourcePattern"; }
     50 
     51     virtual void removeAllClientsFromCache(bool markForInvalidation = true);
     52     virtual void removeClientFromCache(RenderObject*, bool markForInvalidation = true);
     53 
     54     virtual bool applyResource(RenderObject*, RenderStyle*, GraphicsContext*&, unsigned short resourceMode);
     55     virtual void postApplyResource(RenderObject*, GraphicsContext*&, unsigned short resourceMode, const Path*);
     56     virtual FloatRect resourceBoundingBox(RenderObject*) { return FloatRect(); }
     57 
     58     virtual RenderSVGResourceType resourceType() const { return s_resourceType; }
     59     static RenderSVGResourceType s_resourceType;
     60 
     61 private:
     62     bool buildTileImageTransform(RenderObject*, const PatternAttributes&, const SVGPatternElement*, FloatRect& patternBoundaries, AffineTransform& tileImageTransform) const;
     63 
     64     PassOwnPtr<ImageBuffer> createTileImage(RenderObject*, const PatternAttributes&, const FloatRect& tileBoundaries,
     65                                             const FloatRect& absoluteTileBoundaries, const AffineTransform& tileImageTransform) const;
     66 
     67     bool m_shouldCollectPatternAttributes : 1;
     68     PatternAttributes m_attributes;
     69     HashMap<RenderObject*, PatternData*> m_pattern;
     70 };
     71 
     72 }
     73 
     74 #endif
     75 #endif
     76