2 * Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org>
3 * Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
4 * Copyright (C) 2005 Eric Seidel <eric@webkit.org>
5 * Copyright (C) 2013 Google Inc. All rights reserved.
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
17 * You should have received a copy of the GNU Library General Public License
18 * along with this library; see the file COPYING.LIB. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 * Boston, MA 02110-1301, USA.
23 #ifndef FEDisplacementMap_h
24 #define FEDisplacementMap_h
26 #include "platform/graphics/filters/Filter.h"
27 #include "platform/graphics/filters/FilterEffect.h"
28 #include "wtf/text/WTFString.h"
32 enum ChannelSelectorType {
40 class PLATFORM_EXPORT FEDisplacementMap : public FilterEffect {
42 static PassRefPtr<FEDisplacementMap> create(Filter*, ChannelSelectorType xChannelSelector, ChannelSelectorType yChannelSelector, float);
44 ChannelSelectorType xChannelSelector() const;
45 bool setXChannelSelector(const ChannelSelectorType);
47 ChannelSelectorType yChannelSelector() const;
48 bool setYChannelSelector(const ChannelSelectorType);
53 virtual void setResultColorSpace(ColorSpace) OVERRIDE;
54 virtual void transformResultColorSpace(FilterEffect*, const int) OVERRIDE;
56 virtual FloatRect mapPaintRect(const FloatRect&, bool forward = true) OVERRIDE FINAL;
58 virtual TextStream& externalRepresentation(TextStream&, int indention) const OVERRIDE;
60 FloatRect determineAbsolutePaintRect(const FloatRect& requestedRect) OVERRIDE;
63 FEDisplacementMap(Filter*, ChannelSelectorType xChannelSelector, ChannelSelectorType yChannelSelector, float);
65 virtual void applySoftware() OVERRIDE;
67 virtual PassRefPtr<SkImageFilter> createImageFilter(SkiaImageFilterBuilder*) OVERRIDE;
69 ChannelSelectorType m_xChannelSelector;
70 ChannelSelectorType m_yChannelSelector;
76 #endif // FEDisplacementMap_h