1 /* 2 * Copyright (C) 2009 Dirk Schulze <krit (at) webkit.org> 3 * 4 * This library is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Library General Public 6 * License as published by the Free Software Foundation; either 7 * version 2 of the License, or (at your option) any later version. 8 * 9 * This library is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Library General Public License for more details. 13 * 14 * You should have received a copy of the GNU Library General Public License 15 * aint with this library; see the file COPYING.LIB. If not, write to 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 17 * Boston, MA 02110-1301, USA. 18 */ 19 20 #ifndef Filter_h 21 #define Filter_h 22 23 #if ENABLE(FILTERS) 24 #include "FloatRect.h" 25 #include "FloatSize.h" 26 #include "ImageBuffer.h" 27 #include "StringHash.h" 28 29 #include <wtf/PassRefPtr.h> 30 #include <wtf/RefCounted.h> 31 #include <wtf/RefPtr.h> 32 33 namespace WebCore { 34 35 class FilterEffect; 36 37 class Filter : public RefCounted<Filter> { 38 public: 39 virtual ~Filter() { } 40 41 void setSourceImage(PassOwnPtr<ImageBuffer> sourceImage) { m_sourceImage = sourceImage; } 42 ImageBuffer* sourceImage() { return m_sourceImage.get(); } 43 44 FloatSize filterResolution() const { return m_filterResolution; } 45 void setFilterResolution(const FloatSize& filterResolution) { m_filterResolution = filterResolution; } 46 47 virtual FloatRect sourceImageRect() const = 0; 48 virtual FloatRect filterRegion() const = 0; 49 50 // SVG specific 51 virtual void calculateEffectSubRegion(FilterEffect*) { } 52 53 virtual FloatSize maxImageSize() const = 0; 54 virtual bool effectBoundingBoxMode() const = 0; 55 56 private: 57 OwnPtr<ImageBuffer> m_sourceImage; 58 FloatSize m_filterResolution; 59 }; 60 61 } // namespace WebCore 62 63 #endif // ENABLE(FILTERS) 64 65 #endif // Filter_h 66
