khtml/svg/graphics/SVGResourceFilter.h

   1 /*
   2     Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org>
   3                   2004, 2005 Rob Buis <buis@kde.org>
   4                   2005 Eric Seidel <eric@webkit.org>
   5
   6     This library is free software; you can redistribute it and/or
   7     modify it under the terms of the GNU Library General Public
   8     License as published by the Free Software Foundation; either
   9     version 2 of the License, or (at your option) any later version.
  10
  11     This library is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14     Library General Public License for more details.
  15
  16     You should have received a copy of the GNU Library General Public License
  17     aint with this library; see the file COPYING.LIB.  If not, write to
  18     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  19     Boston, MA 02110-1301, USA.
  20 */
  21
  22 #ifndef SVGResourceFilter_h
  23 #define SVGResourceFilter_h
  24
  25 #if ENABLE(SVG) && ENABLE(SVG_FILTERS)
  26 #include "SVGResource.h"
  27 #include "SVGFilterEffect.h"
  28
  29 #include "FloatRect.h"
  30
  31 #include <wtf/OwnPtr.h>
  32
  33 namespace WebCore {
  34
  35 class GraphicsContext;
  36 class SVGFilterEffect;
  37
  38 class SVGResourceFilterPlatformData {
  39 public:
  40     virtual ~SVGResourceFilterPlatformData() {}
  41 };
  42
  43 class SVGResourceFilter : public SVGResource {
  44 public:
  45     SVGResourceFilter();
  46
  47     virtual SVGResourceType resourceType() const { return FilterResourceType; }
  48
  49     bool filterBoundingBoxMode() const { return m_filterBBoxMode; }
  50     void setFilterBoundingBoxMode(bool bboxMode) { m_filterBBoxMode = bboxMode; }
  51
  52     bool effectBoundingBoxMode() const { return m_effectBBoxMode; }
  53     void setEffectBoundingBoxMode(bool bboxMode) { m_effectBBoxMode = bboxMode; }
  54
  55     bool xBoundingBoxMode() const { return m_xBBoxMode; }
  56     void setXBoundingBoxMode(bool bboxMode) { m_xBBoxMode = bboxMode; }
  57
  58     bool yBoundingBoxMode() const { return m_yBBoxMode; }
  59     void setYBoundingBoxMode(bool bboxMode) { m_yBBoxMode = bboxMode; }
  60
  61     FloatRect filterRect() const { return m_filterRect; }
  62     void setFilterRect(const FloatRect& rect) { m_filterRect = rect; }
  63
  64     FloatRect filterBBoxForItemBBox(const FloatRect& itemBBox) const;
  65
  66     void clearEffects();
  67     void addFilterEffect(SVGFilterEffect*);
  68
  69     virtual TextStream& externalRepresentation(TextStream&) const;
  70
  71     // To be implemented in platform specific code.
  72     void prepareFilter(GraphicsContext*&, const FloatRect& bbox);
  73     void applyFilter(GraphicsContext*&, const FloatRect& bbox);
  74
  75     SVGResourceFilterPlatformData* platformData() { return m_platformData.get(); }
  76     const Vector<SVGFilterEffect*>& effects() { return m_effects; }
  77
  78 private:
  79     SVGResourceFilterPlatformData* createPlatformData();
  80
  81     OwnPtr<SVGResourceFilterPlatformData> m_platformData;
  82
  83     bool m_filterBBoxMode : 1;
  84     bool m_effectBBoxMode : 1;
  85
  86     bool m_xBBoxMode : 1;
  87     bool m_yBBoxMode : 1;
  88
  89     FloatRect m_filterRect;
  90     Vector<SVGFilterEffect*> m_effects;
  91 };
  92
  93 SVGResourceFilter* getFilterById(Document*, const AtomicString&);
  94
  95 } // namespace WebCore
  96
  97 #endif // ENABLE(SVG)
  98
  99 #endif // SVGResourceFilter_h