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| 1 /* | |
| 2 * Copyright (C) 2009 Dirk Schulze <krit@webkit.org> | |
| 3 * Copyright (C) 2013 Google Inc. All rights reserved. | |
| 4 * | |
| 5 * This library is free software; you can redistribute it and/or | |
| 6 * modify it under the terms of the GNU Library General Public | |
| 7 * License as published by the Free Software Foundation; either | |
| 8 * version 2 of the License, or (at your option) any later version. | |
| 9 * | |
| 10 * This library is distributed in the hope that it will be useful, | |
| 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 * Library General Public License for more details. | |
| 14 * | |
| 15 * You should have received a copy of the GNU Library General Public License | |
| 16 * along with this library; see the file COPYING.LIB. If not, write to | |
| 17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
| 18 * Boston, MA 02110-1301, USA. | |
| 19 */ | |
| 20 | |
| 21 #ifndef Filter_h | |
| 22 #define Filter_h | |
| 23 | |
| 24 #include "core/platform/graphics/ImageBuffer.h" | |
| 25 #include "platform/geometry/FloatRect.h" | |
| 26 #include "platform/geometry/FloatSize.h" | |
| 27 #include "wtf/RefCounted.h" | |
| 28 | |
| 29 namespace WebCore { | |
| 30 | |
| 31 class FilterEffect; | |
| 32 | |
| 33 class Filter : public RefCounted<Filter> { | |
| 34 public: | |
| 35 Filter(const AffineTransform& absoluteTransform) : m_renderingMode(Unacceler
ated), m_absoluteTransform(absoluteTransform) { } | |
| 36 virtual ~Filter() { } | |
| 37 | |
| 38 void setSourceImage(PassOwnPtr<ImageBuffer> sourceImage) { m_sourceImage = s
ourceImage; } | |
| 39 ImageBuffer* sourceImage() { return m_sourceImage.get(); } | |
| 40 | |
| 41 FloatSize filterResolution() const { return m_filterResolution; } | |
| 42 void setFilterResolution(const FloatSize& filterResolution) { m_filterResolu
tion = filterResolution; } | |
| 43 | |
| 44 const AffineTransform& absoluteTransform() const { return m_absoluteTransfor
m; } | |
| 45 void setAbsoluteTransform(const AffineTransform& absoluteTransform) { m_abso
luteTransform = absoluteTransform; } | |
| 46 FloatPoint mapAbsolutePointToLocalPoint(const FloatPoint& point) const { ret
urn m_absoluteTransform.inverse().mapPoint(point); } | |
| 47 | |
| 48 RenderingMode renderingMode() const { return m_renderingMode; } | |
| 49 void setRenderingMode(RenderingMode renderingMode) { m_renderingMode = rende
ringMode; } | |
| 50 | |
| 51 virtual float applyHorizontalScale(float value) const | |
| 52 { | |
| 53 float filterRegionScale = absoluteFilterRegion().isEmpty() || filterRegi
on().isEmpty() ? | |
| 54 1.0f : absoluteFilterRegion().width() / filterRegion().width(); | |
| 55 return value * m_filterResolution.width() * filterRegionScale; | |
| 56 } | |
| 57 virtual float applyVerticalScale(float value) const | |
| 58 { | |
| 59 float filterRegionScale = absoluteFilterRegion().isEmpty() || filterRegi
on().isEmpty() ? | |
| 60 1.0f : absoluteFilterRegion().height() / filterRegion().height(); | |
| 61 return value * m_filterResolution.height() * filterRegionScale; | |
| 62 } | |
| 63 | |
| 64 virtual FloatRect sourceImageRect() const = 0; | |
| 65 | |
| 66 FloatRect absoluteFilterRegion() const { return m_absoluteFilterRegion; } | |
| 67 void setAbsoluteFilterRegion(const FloatRect& rect) { m_absoluteFilterRegion
= rect; } | |
| 68 | |
| 69 FloatRect filterRegion() const { return m_filterRegion; } | |
| 70 void setFilterRegion(const FloatRect& rect) { m_filterRegion = rect; } | |
| 71 | |
| 72 private: | |
| 73 OwnPtr<ImageBuffer> m_sourceImage; | |
| 74 FloatSize m_filterResolution; | |
| 75 RenderingMode m_renderingMode; | |
| 76 AffineTransform m_absoluteTransform; | |
| 77 FloatRect m_absoluteFilterRegion; | |
| 78 FloatRect m_filterRegion; | |
| 79 }; | |
| 80 | |
| 81 } // namespace WebCore | |
| 82 | |
| 83 #endif // Filter_h | |
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Chromium Code Reviews
Issue 99103006:
Moving GraphicsContext and dependencies from core to platform. (Closed)
Base URL: svn://svn.chromium.org/blink/trunk