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1 /* | |
2 * Copyright 2014 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 SkSurfaceProps_DEFINED | |
9 #define SkSurfaceProps_DEFINED | |
10 | |
11 #include "SkPoint.h" | |
bungeman-skia
2014/09/19 19:35:12
Is this being used?
reed1
2014/09/19 20:34:21
Done.
| |
12 | |
13 /** | |
14 * Description of how the LCD strips are arranged for each pixel. If this is un known, or the | |
15 * pixels are meant to be "portable" and/or transformed before showing (e.g. ro tated, scaled) | |
16 * then use kUnknown_SkPixelGeometry. | |
17 */ | |
18 enum SkPixelGeometry { | |
19 kUnknown_SkPixelGeometry, | |
20 kRGB_H_SkPixelGeometry, | |
21 kBGR_H_SkPixelGeometry, | |
22 kRGB_V_SkPixelGeometry, | |
23 kBGR_V_SkPixelGeometry, | |
24 }; | |
25 | |
26 // Returns true iff geo is a known geometry and is RGB. | |
27 static inline bool SkPixelGeometryIsRGB(SkPixelGeometry geo) { | |
28 return kRGB_H_SkPixelGeometry == geo || kRGB_V_SkPixelGeometry == geo; | |
29 } | |
30 | |
31 // Returns true iff geo is a known geometry and is BGR. | |
32 static inline bool SkPixelGeometryIsBGR(SkPixelGeometry geo) { | |
33 return kBGR_H_SkPixelGeometry == geo || kBGR_V_SkPixelGeometry == geo; | |
34 } | |
35 | |
36 // Returns true iff geo is a known geometry and is horizontal. | |
37 static inline bool SkPixelGeometryIsH(SkPixelGeometry geo) { | |
38 return kRGB_H_SkPixelGeometry == geo || kBGR_H_SkPixelGeometry == geo; | |
39 } | |
40 | |
41 // Returns true iff geo is a known geometry and is vertical. | |
42 static inline bool SkPixelGeometryIsV(SkPixelGeometry geo) { | |
43 return kRGB_V_SkPixelGeometry == geo || kBGR_V_SkPixelGeometry == geo; | |
44 } | |
45 | |
46 /** | |
47 * Describes properties and constraints of a given SkSurface. The rendering eng ine can parse these | |
48 * during drawing, and can sometimes optimize its performance (e.g. disabling a n expensive | |
49 * feature). | |
50 */ | |
51 class SkSurfaceProps { | |
52 public: | |
53 enum Flags { | |
54 kDisallowAntiAlias_Flag = 1 << 0, | |
55 kDisallowDither_Flag = 1 << 1, | |
56 kUseDistanceFieldFonts_Flag = 1 << 2, | |
57 }; | |
58 SkSurfaceProps(uint32_t flags, SkPixelGeometry); | |
59 | |
60 enum InitType { | |
61 kLegacyFontHost_InitType | |
62 }; | |
63 SkSurfaceProps(InitType); | |
64 SkSurfaceProps(uint32_t flags, InitType); | |
65 | |
66 uint32_t flags() const { return fFlags; } | |
67 SkPixelGeometry pixelGeometry() const { return fPixelGeometry; } | |
68 | |
69 bool isDisallowAA() const { return SkToBool(fFlags & kDisallowAntiAlias_Flag ); } | |
70 bool isDisallowDither() const { return SkToBool(fFlags & kDisallowDither_Fla g); } | |
71 bool isUseDistanceFieldFonts() const { return SkToBool(fFlags & kUseDistance FieldFonts_Flag); } | |
72 | |
73 private: | |
74 SkSurfaceProps(); | |
75 | |
76 uint32_t fFlags; | |
77 SkPixelGeometry fPixelGeometry; | |
78 }; | |
79 | |
80 #endif | |
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