SkDisplacementMapEffect.h revision 4cb543d6057b692e1099e9f115155f0bf323a0c8
1a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch/* 2a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch * Copyright 2013 Google Inc. 3a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch * 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Use of this source code is governed by a BSD-style license that can be 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * found in the LICENSE file. 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch#ifndef SkDisplacementMapEffect_DEFINED 9a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch#define SkDisplacementMapEffect_DEFINED 10a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch 11a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch#include "SkImageFilter.h" 12a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch#include "SkBitmap.h" 13a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch 14a02191e04bc25c4935f804f2c080ae28663d096dBen Murdochclass SK_API SkDisplacementMapEffect : public SkImageFilter { 15a02191e04bc25c4935f804f2c080ae28663d096dBen Murdochpublic: 16a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch enum ChannelSelectorType { 17a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch kUnknown_ChannelSelectorType, 18a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch kR_ChannelSelectorType, 19a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch kG_ChannelSelectorType, 20a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch kB_ChannelSelectorType, 21a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch kA_ChannelSelectorType 22a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch }; 23a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch 24a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch ~SkDisplacementMapEffect(); 25a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch 26a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch static SkDisplacementMapEffect* Create(ChannelSelectorType xChannelSelector, 27a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch ChannelSelectorType yChannelSelector, 28a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch SkScalar scale, SkImageFilter* displacement, 29a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch SkImageFilter* color = NULL, 30a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch const CropRect* cropRect = NULL) { 31a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch return SkNEW_ARGS(SkDisplacementMapEffect, (xChannelSelector, yChannelSelector, scale, 32a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch displacement, color, cropRect)); 33a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch } 34a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch 35a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDisplacementMapEffect) 36a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch 37a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch virtual bool onFilterImage(Proxy* proxy, 38a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch const SkBitmap& src, 39a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch const Context& ctx, 40a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch SkBitmap* dst, 41a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch SkIPoint* offset) const SK_OVERRIDE; 42a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch virtual void computeFastBounds(const SkRect& src, SkRect* dst) const SK_OVERRIDE; 43a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch 44a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch virtual bool onFilterBounds(const SkIRect& src, const SkMatrix&, 45a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch SkIRect* dst) const SK_OVERRIDE; 46a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch 47a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch#if SK_SUPPORT_GPU 48a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch virtual bool canFilterImageGPU() const SK_OVERRIDE { return true; } 49a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch virtual bool filterImageGPU(Proxy* proxy, const SkBitmap& src, const Context& ctx, 50a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch SkBitmap* result, SkIPoint* offset) const SK_OVERRIDE; 51a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch#endif 52a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch 53a02191e04bc25c4935f804f2c080ae28663d096dBen Murdochprotected: 54a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch explicit SkDisplacementMapEffect(SkReadBuffer& buffer); 55a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE; 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef SK_SUPPORT_LEGACY_PUBLICEFFECTCONSTRUCTORS 58a02191e04bc25c4935f804f2c080ae28663d096dBen Murdochpublic: 59a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch#endif 60a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch SkDisplacementMapEffect(ChannelSelectorType xChannelSelector, 61a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch ChannelSelectorType yChannelSelector, 62a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch SkScalar scale, SkImageFilter* displacement, 63a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch SkImageFilter* color = NULL, 64a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch const CropRect* cropRect = NULL); 65a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch 66a02191e04bc25c4935f804f2c080ae28663d096dBen Murdochprivate: 67a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch ChannelSelectorType fXChannelSelector; 68a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch ChannelSelectorType fYChannelSelector; 69a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch SkScalar fScale; 70a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch typedef SkImageFilter INHERITED; 71a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch const SkImageFilter* getDisplacementInput() const { return getInput(0); } 72a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch const SkImageFilter* getColorInput() const { return getInput(1); } 73a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch}; 74a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch 75a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch#endif 76a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch