1 /* 2 Copyright (C) 2009 Dirk Schulze <krit@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 SourceAlpha_h 21 #define SourceAlpha_h 22 23 #if ENABLE(FILTERS) 24 #include "FilterEffect.h" 25 26 #include "PlatformString.h" 27 #include "Filter.h" 28 29 namespace WebCore { 30 31 class SourceAlpha : public FilterEffect { 32 public: 33 static PassRefPtr<SourceAlpha> create(); 34 35 static const AtomicString& effectName(); 36 isSourceInput()37 virtual bool isSourceInput() { return true; } calculateEffectRect(Filter * filter)38 virtual FloatRect calculateEffectRect(Filter* filter) { return filter->sourceImageRect(); } 39 void apply(Filter*); 40 void dump(); 41 42 private: SourceAlpha()43 SourceAlpha() { } 44 }; 45 } //namespace WebCore 46 47 #endif // ENABLE(FILTERS) 48 49 #endif // SourceAlpha_h 50