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1 | |
2 /* | 1 /* |
3 * Copyright 2013 Google Inc. | 2 * Copyright 2013 Google Inc. |
4 * | 3 * |
5 * 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 |
6 * found in the LICENSE file. | 5 * found in the LICENSE file. |
7 */ | 6 */ |
8 #include "gm.h" | 7 #include "gm.h" |
9 #include "SkGradientShader.h" | 8 #include "SkGradientShader.h" |
10 | 9 |
11 using namespace skiagm; | 10 using namespace skiagm; |
12 | 11 |
13 struct GradData { | 12 struct GradData { |
14 int fCount; | 13 int fCount; |
15 const SkColor* fColors; | 14 const SkColor* fColors; |
16 const SkScalar* fPos; | 15 const SkScalar* fPos; |
17 }; | 16 }; |
18 | 17 |
19 static const SkColor gColors[] = { | 18 static const SkColor gColors[] = { |
20 SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorWHITE, SK_ColorBLACK, | 19 SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorWHITE, |
21 SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorWHITE, SK_ColorBLACK, | |
22 SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorWHITE, SK_ColorBLACK, | |
23 SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorWHITE, SK_ColorBLACK, | |
24 SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorWHITE, SK_ColorBLACK, | |
25 SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorWHITE, SK_ColorBLACK, | |
26 SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorWHITE, SK_ColorBLACK, | |
27 SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorWHITE, SK_ColorBLACK, | |
28 }; | 20 }; |
29 | 21 |
30 //static const SkScalar gPos[] = { SK_Scalar1*999/2000, SK_Scalar1*1001/2000 }; | |
31 | |
32 static const GradData gGradData[] = { | 22 static const GradData gGradData[] = { |
33 { 40, gColors, NULL }, | 23 { 1, gColors, NULL }, |
34 // { 2, gColors, gPos }, | 24 { 2, gColors, NULL }, |
35 // { 2, gCol2, NULL }, | 25 { 3, gColors, NULL }, |
| 26 { 4, gColors, NULL }, |
36 }; | 27 }; |
37 | 28 |
38 static SkShader* MakeLinear(const SkPoint pts[2], const GradData& data, | 29 static SkShader* MakeLinear(const SkPoint pts[2], const GradData& data, |
39 SkShader::TileMode tm, SkUnitMapper* mapper) { | 30 SkShader::TileMode tm, SkUnitMapper* mapper) { |
40 return SkGradientShader::CreateLinear(pts, data.fColors, data.fPos, | 31 return SkGradientShader::CreateLinear(pts, data.fColors, data.fPos, |
41 data.fCount, tm, mapper); | 32 data.fCount, tm, mapper); |
42 } | 33 } |
43 | 34 |
44 static SkShader* MakeRadial(const SkPoint pts[2], const GradData& data, | 35 static SkShader* MakeRadial(const SkPoint pts[2], const GradData& data, |
45 SkShader::TileMode tm, SkUnitMapper* mapper) { | 36 SkShader::TileMode tm, SkUnitMapper* mapper) { |
46 SkPoint center; | 37 SkPoint center; |
47 center.set(SkScalarAve(pts[0].fX, pts[1].fX), | 38 center.set(SkScalarAve(pts[0].fX, pts[1].fX), |
48 SkScalarAve(pts[0].fY, pts[1].fY)); | 39 SkScalarAve(pts[0].fY, pts[1].fY)); |
49 return SkGradientShader::CreateRadial(center, center.fX, data.fColors, | 40 return SkGradientShader::CreateRadial(center, center.fX, data.fColors, |
50 data.fPos, data.fCount, tm, mapper); | 41 data.fPos, data.fCount, tm, mapper); |
51 } | 42 } |
52 | 43 |
53 static SkShader* MakeSweep(const SkPoint pts[2], const GradData& data, | 44 static SkShader* MakeSweep(const SkPoint pts[2], const GradData& data, |
54 SkShader::TileMode, SkUnitMapper* mapper) { | 45 SkShader::TileMode, SkUnitMapper* mapper) { |
55 SkPoint center; | 46 SkPoint center; |
56 center.set(SkScalarAve(pts[0].fX, pts[1].fX), | 47 center.set(SkScalarAve(pts[0].fX, pts[1].fX), |
57 SkScalarAve(pts[0].fY, pts[1].fY)); | 48 SkScalarAve(pts[0].fY, pts[1].fY)); |
58 return SkGradientShader::CreateSweep(center.fX, center.fY, data.fColors, | 49 return SkGradientShader::CreateSweep(center.fX, center.fY, data.fColors, |
59 data.fPos, data.fCount, mapper); | 50 data.fPos, data.fCount, mapper); |
60 } | 51 } |
61 | 52 |
| 53 static SkShader* Make2Radial(const SkPoint pts[2], const GradData& data, |
| 54 SkShader::TileMode tm, SkUnitMapper* mapper) { |
| 55 SkPoint center0, center1; |
| 56 center0.set(SkScalarAve(pts[0].fX, pts[1].fX), |
| 57 SkScalarAve(pts[0].fY, pts[1].fY)); |
| 58 center1.set(SkScalarInterp(pts[0].fX, pts[1].fX, SkIntToScalar(3)/5), |
| 59 SkScalarInterp(pts[0].fY, pts[1].fY, SkIntToScalar(1)/4)); |
| 60 return SkGradientShader::CreateTwoPointRadial( |
| 61 center1, (pts[1].fX - pts[0].fX) / 7, |
| 62 center0, (pts[1].fX - pts[0].fX) / 2, |
| 63 data.fColors, data.fPos, data.fCount, tm, mapper); |
| 64 } |
| 65 |
| 66 static SkShader* Make2Conical(const SkPoint pts[2], const GradData& data, |
| 67 SkShader::TileMode tm, SkUnitMapper* mapper) { |
| 68 SkPoint center0, center1; |
| 69 SkScalar radius0 = SkScalarDiv(pts[1].fX - pts[0].fX, 10); |
| 70 SkScalar radius1 = SkScalarDiv(pts[1].fX - pts[0].fX, 3); |
| 71 center0.set(pts[0].fX + radius0, pts[0].fY + radius0); |
| 72 center1.set(pts[1].fX - radius1, pts[1].fY - radius1); |
| 73 return SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 74 center0, radius0, |
| 75 data.fColors, data.fPos, |
| 76 data.fCount, tm, mapper); |
| 77 } |
| 78 |
62 | 79 |
63 typedef SkShader* (*GradMaker)(const SkPoint pts[2], const GradData& data, | 80 typedef SkShader* (*GradMaker)(const SkPoint pts[2], const GradData& data, |
64 SkShader::TileMode tm, SkUnitMapper* mapper); | 81 SkShader::TileMode tm, SkUnitMapper* mapper); |
65 static const GradMaker gGradMakers[] = { | 82 static const GradMaker gGradMakers[] = { |
66 MakeLinear, MakeRadial, MakeSweep, | 83 MakeLinear, MakeRadial, MakeSweep, Make2Radial, Make2Conical, |
67 }; | 84 }; |
68 | 85 |
69 /////////////////////////////////////////////////////////////////////////////// | 86 /////////////////////////////////////////////////////////////////////////////// |
70 | 87 |
71 class GradientsGM : public GM { | 88 class GradientsGM : public GM { |
72 public: | 89 public: |
73 GradientsGM() { | 90 GradientsGM() { |
74 this->setBGColor(0xFFDDDDDD); | 91 this->setBGColor(0xFFDDDDDD); |
75 } | 92 } |
76 | 93 |
77 protected: | 94 protected: |
78 SkString onShortName() SK_OVERRIDE { return SkString("gradient_dirty_laundry
"); } | 95 SkString onShortName() SK_OVERRIDE { return SkString("gradients_gpu"); } |
79 virtual SkISize onISize() SK_OVERRIDE { return make_isize(640, 615); } | 96 virtual SkISize onISize() SK_OVERRIDE { return make_isize(640, 615); } |
80 | 97 |
81 virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE { | 98 virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE { |
82 SkPoint pts[2] = { { 0, 0 }, | 99 SkPoint pts[2] = { { 0, 0 }, |
83 { SkIntToScalar(100), SkIntToScalar(100) } | 100 { SkIntToScalar(100), SkIntToScalar(100) } |
84 }; | 101 }; |
85 SkShader::TileMode tm = SkShader::kClamp_TileMode; | 102 SkShader::TileMode tm = SkShader::kClamp_TileMode; |
86 SkRect r = { 0, 0, SkIntToScalar(100), SkIntToScalar(100) }; | 103 SkRect r = { 0, 0, SkIntToScalar(100), SkIntToScalar(100) }; |
87 SkPaint paint; | 104 SkPaint paint; |
88 paint.setAntiAlias(true); | 105 paint.setAntiAlias(true); |
89 | 106 |
90 canvas->translate(SkIntToScalar(20), SkIntToScalar(20)); | 107 canvas->translate(SkIntToScalar(20), SkIntToScalar(20)); |
91 for (size_t i = 0; i < SK_ARRAY_COUNT(gGradData); i++) { | 108 for (size_t i = 0; i < SK_ARRAY_COUNT(gGradData); ++i) { |
92 canvas->save(); | 109 canvas->save(); |
93 for (size_t j = 0; j < SK_ARRAY_COUNT(gGradMakers); j++) { | 110 for (size_t j = 0; j < SK_ARRAY_COUNT(gGradMakers); ++j) { |
94 SkShader* shader = gGradMakers[j](pts, gGradData[i], tm, NULL); | 111 SkShader* shader = gGradMakers[j](pts, gGradData[i], tm, NULL); |
95 paint.setShader(shader)->unref(); | 112 paint.setShader(shader)->unref(); |
96 canvas->drawRect(r, paint); | 113 canvas->drawRect(r, paint); |
97 canvas->translate(0, SkIntToScalar(120)); | 114 canvas->translate(0, SkIntToScalar(120)); |
98 } | 115 } |
99 canvas->restore(); | 116 canvas->restore(); |
100 canvas->translate(SkIntToScalar(120), 0); | 117 canvas->translate(SkIntToScalar(120), 0); |
101 } | 118 } |
102 } | 119 } |
103 | 120 |
104 private: | 121 private: |
105 typedef GM INHERITED; | 122 typedef GM INHERITED; |
106 }; | 123 }; |
107 | 124 |
108 /////////////////////////////////////////////////////////////////////////////// | 125 /////////////////////////////////////////////////////////////////////////////// |
109 | 126 |
110 static GM* MyFactory(void*) { return new GradientsGM; } | 127 static GM* MyFactory(void*) { return new GradientsGM; } |
111 static GMRegistry reg(MyFactory); | 128 static GMRegistry reg(MyFactory); |
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