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1 /* | 1 /* |
2 * Copyright 2011 Google Inc. | 2 * Copyright 2011 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #ifndef SkImageFilter_DEFINED | 8 #ifndef SkImageFilter_DEFINED |
9 #define SkImageFilter_DEFINED | 9 #define SkImageFilter_DEFINED |
10 | 10 |
11 #include "../private/SkTArray.h" | 11 #include "../private/SkTArray.h" |
12 #include "../private/SkTemplates.h" | 12 #include "../private/SkTemplates.h" |
13 #include "../private/SkMutex.h" | 13 #include "../private/SkMutex.h" |
14 #include "SkFilterQuality.h" | 14 #include "SkFilterQuality.h" |
15 #include "SkFlattenable.h" | 15 #include "SkFlattenable.h" |
16 #include "SkMatrix.h" | 16 #include "SkMatrix.h" |
17 #include "SkRect.h" | 17 #include "SkRect.h" |
18 #include "SkSurfaceProps.h" | |
19 | 18 |
20 class GrContext; | 19 class GrContext; |
21 class GrFragmentProcessor; | 20 class GrFragmentProcessor; |
22 class GrTexture; | |
23 class SkBaseDevice; | 21 class SkBaseDevice; |
24 class SkBitmap; | |
25 class SkColorFilter; | 22 class SkColorFilter; |
26 struct SkIPoint; | 23 struct SkIPoint; |
27 class SkSpecialImage; | 24 class SkSpecialImage; |
28 | 25 |
29 /** | 26 /** |
30 * Base class for image filters. If one is installed in the paint, then | 27 * Base class for image filters. If one is installed in the paint, then |
31 * all drawing occurs as usual, but it is as if the drawing happened into an | 28 * all drawing occurs as usual, but it is as if the drawing happened into an |
32 * offscreen (before the xfermode is applied). This offscreen bitmap will | 29 * offscreen (before the xfermode is applied). This offscreen bitmap will |
33 * then be handed to the imagefilter, who in turn creates a new bitmap which | 30 * then be handed to the imagefilter, who in turn creates a new bitmap which |
34 * is what will finally be drawn to the device (using the original xfermode). | 31 * is what will finally be drawn to the device (using the original xfermode). |
35 */ | 32 */ |
36 class SK_API SkImageFilter : public SkFlattenable { | 33 class SK_API SkImageFilter : public SkFlattenable { |
37 public: | 34 public: |
38 // This cache maps from (filter's unique ID + CTM + clipBounds + src bitmap
generation ID) to | 35 // This cache maps from (filter's unique ID + CTM + clipBounds + src bitmap
generation ID) to |
39 // (result, offset). | 36 // (result, offset). |
40 class Cache : public SkRefCnt { | 37 class Cache : public SkRefCnt { |
41 public: | 38 public: |
42 struct Key; | 39 struct Key; |
43 virtual ~Cache() {} | 40 virtual ~Cache() {} |
44 static Cache* Create(size_t maxBytes); | 41 static Cache* Create(size_t maxBytes); |
45 static Cache* Get(); | 42 static Cache* Get(); |
46 virtual bool get(const Key& key, SkBitmap* result, SkIPoint* offset) con
st = 0; | |
47 virtual SkSpecialImage* get(const Key& key, SkIPoint* offset) const = 0; | 43 virtual SkSpecialImage* get(const Key& key, SkIPoint* offset) const = 0; |
48 virtual void set(const Key& key, const SkBitmap& result, const SkIPoint&
offset) = 0; | |
49 virtual void set(const Key& key, SkSpecialImage* image, const SkIPoint&
offset) = 0; | 44 virtual void set(const Key& key, SkSpecialImage* image, const SkIPoint&
offset) = 0; |
50 virtual void purge() = 0; | 45 virtual void purge() = 0; |
51 virtual void purgeByKeys(const Key[], int) = 0; | 46 virtual void purgeByKeys(const Key[], int) = 0; |
52 SkDEBUGCODE(virtual int count() const = 0;) | 47 SkDEBUGCODE(virtual int count() const = 0;) |
53 }; | 48 }; |
54 | 49 |
55 class Context { | 50 class Context { |
56 public: | 51 public: |
57 Context(const SkMatrix& ctm, const SkIRect& clipBounds, Cache* cache) | 52 Context(const SkMatrix& ctm, const SkIRect& clipBounds, Cache* cache) |
58 : fCTM(ctm) | 53 : fCTM(ctm) |
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401 */ | 396 */ |
402 #define SK_IMAGEFILTER_UNFLATTEN_COMMON(localVar, expectedCount) \ | 397 #define SK_IMAGEFILTER_UNFLATTEN_COMMON(localVar, expectedCount) \ |
403 Common localVar; \ | 398 Common localVar; \ |
404 do { \ | 399 do { \ |
405 if (!localVar.unflatten(buffer, expectedCount)) { \ | 400 if (!localVar.unflatten(buffer, expectedCount)) { \ |
406 return NULL; \ | 401 return NULL; \ |
407 } \ | 402 } \ |
408 } while (0) | 403 } while (0) |
409 | 404 |
410 #endif | 405 #endif |
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