| /* |
| * Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org> |
| * Copyright (C) 2004, 2005 Rob Buis <buis@kde.org> |
| * Copyright (C) 2005 Eric Seidel <eric@webkit.org> |
| * Copyright (C) 2013 Google Inc. 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 FEDisplacementMap_h |
| #define FEDisplacementMap_h |
| |
| #include "core/platform/graphics/filters/Filter.h" |
| #include "core/platform/graphics/filters/FilterEffect.h" |
| #include "wtf/text/WTFString.h" |
| |
| namespace WebCore { |
| |
| enum ChannelSelectorType { |
| CHANNEL_UNKNOWN = 0, |
| CHANNEL_R = 1, |
| CHANNEL_G = 2, |
| CHANNEL_B = 3, |
| CHANNEL_A = 4 |
| }; |
| |
| class FEDisplacementMap : public FilterEffect { |
| public: |
| static PassRefPtr<FEDisplacementMap> create(Filter*, ChannelSelectorType xChannelSelector, ChannelSelectorType yChannelSelector, float); |
| |
| ChannelSelectorType xChannelSelector() const; |
| bool setXChannelSelector(const ChannelSelectorType); |
| |
| ChannelSelectorType yChannelSelector() const; |
| bool setYChannelSelector(const ChannelSelectorType); |
| |
| float scale() const; |
| bool setScale(float); |
| |
| void setResultColorSpace(ColorSpace) OVERRIDE; |
| virtual void transformResultColorSpace(FilterEffect*, const int) OVERRIDE; |
| |
| virtual void determineAbsolutePaintRect() { setAbsolutePaintRect(enclosingIntRect(maxEffectRect())); } |
| |
| virtual TextStream& externalRepresentation(TextStream&, int indention) const; |
| |
| private: |
| FEDisplacementMap(Filter*, ChannelSelectorType xChannelSelector, ChannelSelectorType yChannelSelector, float); |
| |
| virtual void applySoftware() OVERRIDE; |
| virtual bool applySkia() OVERRIDE; |
| |
| virtual PassRefPtr<SkImageFilter> createImageFilter(SkiaImageFilterBuilder*) OVERRIDE; |
| |
| ChannelSelectorType m_xChannelSelector; |
| ChannelSelectorType m_yChannelSelector; |
| float m_scale; |
| }; |
| |
| } // namespace WebCore |
| |
| #endif // FEDisplacementMap_h |