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sugoi@google.com781cc762013-01-15 15:40:19 +00001/*
2 * Copyright 2013 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8#ifndef SkDisplacementMapEffect_DEFINED
9#define SkDisplacementMapEffect_DEFINED
10
11#include "SkImageFilter.h"
12#include "SkBitmap.h"
13
14class SK_API SkDisplacementMapEffect : public SkImageFilter {
15public:
16 enum ChannelSelectorType {
17 kUnknown_ChannelSelectorType,
18 kR_ChannelSelectorType,
19 kG_ChannelSelectorType,
20 kB_ChannelSelectorType,
commit-bot@chromium.orgcac5fd52014-03-10 10:51:58 +000021 kA_ChannelSelectorType
sugoi@google.com781cc762013-01-15 15:40:19 +000022 };
23
sugoi@google.com781cc762013-01-15 15:40:19 +000024 ~SkDisplacementMapEffect();
25
commit-bot@chromium.orgcac5fd52014-03-10 10:51:58 +000026 static SkDisplacementMapEffect* Create(ChannelSelectorType xChannelSelector,
27 ChannelSelectorType yChannelSelector,
28 SkScalar scale, SkImageFilter* displacement,
29 SkImageFilter* color = NULL,
senorblanco5e5f9482014-08-26 12:27:12 -070030 const CropRect* cropRect = NULL,
31 uint32_t uniqueID = 0);
commit-bot@chromium.orgcac5fd52014-03-10 10:51:58 +000032
sugoi@google.com781cc762013-01-15 15:40:19 +000033 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDisplacementMapEffect)
34
35 virtual bool onFilterImage(Proxy* proxy,
36 const SkBitmap& src,
senorblanco@chromium.org4cb543d2014-03-14 15:44:01 +000037 const Context& ctx,
sugoi@google.com781cc762013-01-15 15:40:19 +000038 SkBitmap* dst,
commit-bot@chromium.orgae761f72014-02-05 22:32:02 +000039 SkIPoint* offset) const SK_OVERRIDE;
senorblanco@chromium.org336d1d72014-01-27 21:03:17 +000040 virtual void computeFastBounds(const SkRect& src, SkRect* dst) const SK_OVERRIDE;
41
senorblanco@chromium.orgc4b12f12014-02-05 17:51:22 +000042 virtual bool onFilterBounds(const SkIRect& src, const SkMatrix&,
43 SkIRect* dst) const SK_OVERRIDE;
44
sugoi@google.com781cc762013-01-15 15:40:19 +000045#if SK_SUPPORT_GPU
46 virtual bool canFilterImageGPU() const SK_OVERRIDE { return true; }
senorblanco@chromium.org4cb543d2014-03-14 15:44:01 +000047 virtual bool filterImageGPU(Proxy* proxy, const SkBitmap& src, const Context& ctx,
commit-bot@chromium.orgae761f72014-02-05 22:32:02 +000048 SkBitmap* result, SkIPoint* offset) const SK_OVERRIDE;
sugoi@google.com781cc762013-01-15 15:40:19 +000049#endif
50
51protected:
commit-bot@chromium.orgcac5fd52014-03-10 10:51:58 +000052 SkDisplacementMapEffect(ChannelSelectorType xChannelSelector,
53 ChannelSelectorType yChannelSelector,
senorblanco9ea3d572014-07-08 09:16:22 -070054 SkScalar scale, SkImageFilter* inputs[2],
senorblanco5e5f9482014-08-26 12:27:12 -070055 const CropRect* cropRect,
56 uint32_t uniqueID);
reed9fa60da2014-08-21 07:59:51 -070057#ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING
commit-bot@chromium.orgbd0be252014-05-15 15:40:41 +000058 explicit SkDisplacementMapEffect(SkReadBuffer& buffer);
reed9fa60da2014-08-21 07:59:51 -070059#endif
commit-bot@chromium.orgbd0be252014-05-15 15:40:41 +000060 virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
commit-bot@chromium.orgcac5fd52014-03-10 10:51:58 +000061
sugoi@google.com781cc762013-01-15 15:40:19 +000062private:
63 ChannelSelectorType fXChannelSelector;
64 ChannelSelectorType fYChannelSelector;
65 SkScalar fScale;
66 typedef SkImageFilter INHERITED;
senorblanco@chromium.org336d1d72014-01-27 21:03:17 +000067 const SkImageFilter* getDisplacementInput() const { return getInput(0); }
68 const SkImageFilter* getColorInput() const { return getInput(1); }
sugoi@google.com781cc762013-01-15 15:40:19 +000069};
70
71#endif