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1 | 1 |
2 /* | 2 /* |
3 * Copyright 2013 Google Inc. | 3 * Copyright 2013 Google Inc. |
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 #include "gm.h" | 8 #include "gm.h" |
9 | 9 |
10 #include "SkBitmap.h" | 10 #include "SkBitmap.h" |
(...skipping 17 matching lines...) Expand all Loading... | |
28 SkPaint circlePaint; | 28 SkPaint circlePaint; |
29 circlePaint.setColor(SK_ColorBLACK); | 29 circlePaint.setColor(SK_ColorBLACK); |
30 | 30 |
31 bm->allocPixels(SkImageInfo::MakeA8(20, 20)); | 31 bm->allocPixels(SkImageInfo::MakeA8(20, 20)); |
32 bm->eraseColor(SK_ColorTRANSPARENT); | 32 bm->eraseColor(SK_ColorTRANSPARENT); |
33 | 33 |
34 SkCanvas canvas(*bm); | 34 SkCanvas canvas(*bm); |
35 canvas.drawCircle(10, 10, 10, circlePaint); | 35 canvas.drawCircle(10, 10, 10, circlePaint); |
36 } | 36 } |
37 | 37 |
38 static void adopt_shader(SkPaint* paint, SkShader* shader) { | |
39 paint->setShader(shader); | |
yunchao
2014/03/18 14:38:36
I suggest that the shader set its own matrix. like
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40 SkSafeUnref(shader); | |
41 } | |
42 | |
38 class BitmapShaderGM : public GM { | 43 class BitmapShaderGM : public GM { |
39 public: | 44 public: |
40 | 45 |
41 BitmapShaderGM() { | 46 BitmapShaderGM() { |
42 this->setBGColor(SK_ColorGRAY); | 47 this->setBGColor(SK_ColorGRAY); |
43 draw_bm(&fBitmap); | 48 draw_bm(&fBitmap); |
44 draw_mask(&fMask); | 49 draw_mask(&fMask); |
45 } | 50 } |
46 | 51 |
47 protected: | 52 protected: |
48 virtual SkString onShortName() { | 53 virtual SkString onShortName() { |
49 return SkString("bitmapshaders"); | 54 return SkString("bitmapshaders"); |
50 } | 55 } |
51 | 56 |
52 virtual SkISize onISize() { | 57 virtual SkISize onISize() { |
53 return make_isize(75, 100); | 58 return SkISize::Make(75, 100); |
54 } | 59 } |
55 | 60 |
56 virtual void onDraw(SkCanvas* canvas) { | 61 virtual void onDraw(SkCanvas* canvas) { |
57 SkShader* shader = SkShader::CreateBitmapShader(fBitmap, | |
58 SkShader::kClamp_TileMod e, | |
59 SkShader::kClamp_TileMod e); | |
60 SkPaint paint; | 62 SkPaint paint; |
61 paint.setShader(shader); | 63 |
62 // release the shader ref as the paint now holds a reference | 64 adopt_shader(&paint, SkShader::CreateBitmapShader(fBitmap, SkShader::kCl amp_TileMode, |
63 shader->unref(); | 65 SkShader::kClamp_TileM ode)); |
64 | 66 |
65 // draw the shader with a bitmap mask | 67 // draw the shader with a bitmap mask |
66 canvas->drawBitmap(fMask, 0, 0, &paint); | 68 canvas->drawBitmap(fMask, 0, 0, &paint); |
67 canvas->drawBitmap(fMask, 30, 0, &paint); | 69 canvas->drawBitmap(fMask, 30, 0, &paint); |
68 | 70 |
69 canvas->translate(0, 25); | 71 canvas->translate(0, 25); |
70 | 72 |
71 // draw the shader with standard geometry | 73 canvas->drawCircle(10, 10, 10, paint); |
72 canvas->drawCircle(10, 10, 10, paint); | 74 canvas->drawCircle(40, 10, 10, paint); // no blue circle expected |
73 canvas->drawCircle(40, 10, 10, paint); // no blue circle expected | |
74 | 75 |
75 canvas->translate(0, 25); | 76 canvas->translate(0, 25); |
76 | 77 |
77 shader = SkShader::CreateBitmapShader(fMask, | 78 adopt_shader(&paint, SkShader::CreateBitmapShader(fMask, SkShader::kRepe at_TileMode, |
78 SkShader::kRepeat_TileMode, | 79 SkShader::kRepeat_Tile Mode)); |
79 SkShader::kRepeat_TileMode); | |
80 paint.setShader(shader); | |
81 paint.setColor(SK_ColorRED); | 80 paint.setColor(SK_ColorRED); |
82 shader->unref(); | |
83 | 81 |
84 // draw the mask using the shader and a color | 82 // draw the mask using the shader and a color |
85 canvas->drawRect(SkRect::MakeXYWH(0, 0, 20, 20), paint); | 83 canvas->drawRect(SkRect::MakeXYWH(0, 0, 20, 20), paint); |
86 canvas->drawRect(SkRect::MakeXYWH(30, 0, 20, 20), paint); | 84 canvas->drawRect(SkRect::MakeXYWH(30, 0, 20, 20), paint); |
87 } | 85 } |
88 | 86 |
89 private: | 87 private: |
90 SkBitmap fBitmap; | 88 SkBitmap fBitmap; |
91 SkBitmap fMask; | 89 SkBitmap fMask; |
92 | 90 |
93 typedef GM INHERITED; | 91 typedef GM INHERITED; |
94 }; | 92 }; |
95 | 93 |
96 ////////////////////////////////////////////////////////////////////////////// | 94 ////////////////////////////////////////////////////////////////////////////// |
97 | 95 |
98 static GM* MyFactory(void*) { return new BitmapShaderGM; } | 96 static GM* MyFactory(void*) { return new BitmapShaderGM; } |
99 static GMRegistry reg(MyFactory); | 97 static GMRegistry reg(MyFactory); |
100 | 98 |
101 } | 99 } |
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