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1 | 1 |
2 /* | 2 /* |
3 * Copyright 2006 The Android Open Source Project | 3 * Copyright 2006 The Android Open Source Project |
4 * | 4 * |
5 * Use of this source code is governed by a BSD-style license that can be | 5 * Use of this source code is governed by a BSD-style license that can be |
6 * found in the LICENSE file. | 6 * found in the LICENSE file. |
7 */ | 7 */ |
8 | 8 |
9 | 9 |
10 #ifndef SkBlurMask_DEFINED | 10 #ifndef SkBlurMask_DEFINED |
11 #define SkBlurMask_DEFINED | 11 #define SkBlurMask_DEFINED |
12 | 12 |
13 #include "SkShader.h" | 13 #include "SkShader.h" |
14 #include "SkMask.h" | 14 #include "SkMask.h" |
| 15 #include "SkRRect.h" |
15 | 16 |
16 class SkBlurMask { | 17 class SkBlurMask { |
17 public: | 18 public: |
18 enum Style { | 19 enum Style { |
19 kNormal_Style, //!< fuzzy inside and outside | 20 kNormal_Style, //!< fuzzy inside and outside |
20 kSolid_Style, //!< solid inside, fuzzy outside | 21 kSolid_Style, //!< solid inside, fuzzy outside |
21 kOuter_Style, //!< nothing inside, fuzzy outside | 22 kOuter_Style, //!< nothing inside, fuzzy outside |
22 kInner_Style, //!< fuzzy inside, nothing outside | 23 kInner_Style, //!< fuzzy inside, nothing outside |
23 | 24 |
24 kStyleCount | 25 kStyleCount |
25 }; | 26 }; |
26 | 27 |
27 enum Quality { | 28 enum Quality { |
28 kLow_Quality, //!< box blur | 29 kLow_Quality, //!< box blur |
29 kHigh_Quality //!< three pass box blur (similar to gaussian) | 30 kHigh_Quality //!< three pass box blur (similar to gaussian) |
30 }; | 31 }; |
31 | 32 |
32 static bool BlurRect(SkScalar sigma, SkMask *dst, const SkRect &src, | 33 static bool BlurRect(SkScalar sigma, SkMask *dst, const SkRect &src, |
33 Style style, | 34 Style style, |
34 SkIPoint *margin = NULL, | 35 SkIPoint *margin = NULL, |
35 SkMask::CreateMode createMode = | 36 SkMask::CreateMode createMode = |
36 SkMask::kComputeBoundsAndRenderI
mage_CreateMode); | 37 SkMask::kComputeBoundsAndRenderI
mage_CreateMode); |
| 38 static bool BlurRRect(SkScalar sigma, SkMask *dst, const SkRRect &src, |
| 39 Style style, |
| 40 SkIPoint *margin = NULL, |
| 41 SkMask::CreateMode createMode = |
| 42 SkMask::kComputeBoundsAndRenderI
mage_CreateMode); |
37 static bool BoxBlur(SkMask* dst, const SkMask& src, | 43 static bool BoxBlur(SkMask* dst, const SkMask& src, |
38 SkScalar sigma, Style style, Quality quality, | 44 SkScalar sigma, Style style, Quality quality, |
39 SkIPoint* margin = NULL); | 45 SkIPoint* margin = NULL); |
40 | 46 |
41 // the "ground truth" blur does a gaussian convolution; it's slow | 47 // the "ground truth" blur does a gaussian convolution; it's slow |
42 // but useful for comparison purposes. | 48 // but useful for comparison purposes. |
43 static bool BlurGroundTruth(SkScalar sigma, SkMask* dst, const SkMask& src, | 49 static bool BlurGroundTruth(SkScalar sigma, SkMask* dst, const SkMask& src, |
44 Style style, | 50 Style style, |
45 SkIPoint* margin = NULL); | 51 SkIPoint* margin = NULL); |
46 | 52 |
47 SK_ATTR_DEPRECATED("use sigma version") | |
48 static bool BlurRect(SkMask *dst, const SkRect &src, | |
49 SkScalar radius, Style style, | |
50 SkIPoint *margin = NULL, | |
51 SkMask::CreateMode createMode = | |
52 SkMask::kComputeBoundsAndRenderI
mage_CreateMode); | |
53 | |
54 SK_ATTR_DEPRECATED("use sigma version") | |
55 static bool Blur(SkMask* dst, const SkMask& src, | |
56 SkScalar radius, Style style, Quality quality, | |
57 SkIPoint* margin = NULL); | |
58 | |
59 SK_ATTR_DEPRECATED("use sigma version") | |
60 static bool BlurGroundTruth(SkMask* dst, const SkMask& src, | |
61 SkScalar radius, Style style, | |
62 SkIPoint* margin = NULL); | |
63 | |
64 static SkScalar ConvertRadiusToSigma(SkScalar radius); | 53 static SkScalar ConvertRadiusToSigma(SkScalar radius); |
65 | 54 |
66 /* Helper functions for analytic rectangle blurs */ | 55 /* Helper functions for analytic rectangle blurs */ |
67 | 56 |
68 /** Look up the intensity of the (one dimnensional) blurred half-plane. | 57 /** Look up the intensity of the (one dimnensional) blurred half-plane. |
69 @param profile The precomputed 1D blur profile; memory allocated by and
managed by | 58 @param profile The precomputed 1D blur profile; memory allocated by and
managed by |
70 ComputeBlurProfile below. | 59 ComputeBlurProfile below. |
71 @param loc the location to look up; The lookup will clamp invalid inputs
, but | 60 @param loc the location to look up; The lookup will clamp invalid inputs
, but |
72 meaningful data are available between 0 and blurred_width | 61 meaningful data are available between 0 and blurred_width |
73 @param blurred_width The width of the final, blurred rectangle | 62 @param blurred_width The width of the final, blurred rectangle |
(...skipping 19 matching lines...) Expand all Loading... |
93 */ | 82 */ |
94 | 83 |
95 static void ComputeBlurredScanline(uint8_t* pixels, const uint8_t* profile, | 84 static void ComputeBlurredScanline(uint8_t* pixels, const uint8_t* profile, |
96 unsigned int width, SkScalar sigma); | 85 unsigned int width, SkScalar sigma); |
97 | 86 |
98 | 87 |
99 | 88 |
100 }; | 89 }; |
101 | 90 |
102 #endif | 91 #endif |
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