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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 #include "gm.h" |
| 9 |
| 10 #include "SkPaint.h" |
| 11 #include "SkPicture.h" |
| 12 #include "SkPictureRecorder.h" |
| 13 #include "SkShader.h" |
| 14 |
| 15 static const SkScalar kPictureSize = SK_Scalar1; |
| 16 static const SkScalar kFillSize = 100; |
| 17 static const unsigned kRowSize = 6; |
| 18 |
| 19 static const struct { |
| 20 SkScalar x, y, w, h; |
| 21 SkScalar offsetX, offsetY; |
| 22 } tiles[] = { |
| 23 { 0, 0, 1, 1, 0, 0 }, |
| 24 { 0.5f, 0.5f, 1, 1, 0, 0 }, |
| 25 { -0.5f, -0.5f, 1, 1, 0, 0 }, |
| 26 |
| 27 { 0, 0, 1.5f, 1.5f, 0, 0 }, |
| 28 { 0.5f, 0.5f, 1.5f, 1.5f, 0, 0 }, |
| 29 { -0.5f, -0.5f, 1.5f, 1.5f, 0, 0 }, |
| 30 |
| 31 { 0, 0, 0.5f, 0.5f, 0, 0 }, |
| 32 { -0.25f, -0.25f, 0.5f, 0.5f, 0, 0 }, |
| 33 { 0.25f, 0.25f, 0.5f, 0.5f, 0, 0 }, |
| 34 |
| 35 { 0, 0, 1, 1, 0.5f, 0.5f }, |
| 36 { 0.5f, 0.5f, 1, 1, 0.5f, 0.5f }, |
| 37 { -0.5f, -0.5f, 1, 1, 0.5f, 0.5f }, |
| 38 |
| 39 { 0, 0, 1.5f, 1.5f, 0.5f, 0.5f }, |
| 40 { 0.5f, 0.5f, 1.5f, 1.5f, 0.5f, 0.5f }, |
| 41 { -0.5f, -0.5f, 1.5f, 1.5f, 0.5f, 0.5f }, |
| 42 |
| 43 { 0, 0, 1.5f, 1, 0, 0 }, |
| 44 { 0.5f, 0.5f, 1.5f, 1, 0, 0 }, |
| 45 { -0.5f, -0.5f, 1.5f, 1, 0, 0 }, |
| 46 |
| 47 { 0, 0, 0.5f, 1, 0, 0 }, |
| 48 { -0.25f, -0.25f, 0.5f, 1, 0, 0 }, |
| 49 { 0.25f, 0.25f, 0.5f, 1, 0, 0 }, |
| 50 |
| 51 { 0, 0, 1, 1.5f, 0, 0 }, |
| 52 { 0.5f, 0.5f, 1, 1.5f, 0, 0 }, |
| 53 { -0.5f, -0.5f, 1, 1.5f, 0, 0 }, |
| 54 |
| 55 { 0, 0, 1, 0.5f, 0, 0 }, |
| 56 { -0.25f, -0.25f, 1, 0.5f, 0, 0 }, |
| 57 { 0.25f, 0.25f, 1, 0.5f, 0, 0 }, |
| 58 }; |
| 59 |
| 60 class PictureShaderTileGM : public skiagm::GM { |
| 61 public: |
| 62 PictureShaderTileGM() { |
| 63 SkPictureRecorder recorder; |
| 64 SkCanvas* pictureCanvas = recorder.beginRecording(SkScalarCeilToInt(kPic
tureSize), |
| 65 SkScalarCeilToInt(kPic
tureSize), |
| 66 NULL, 0); |
| 67 drawScene(pictureCanvas, kPictureSize); |
| 68 SkAutoTUnref<SkPicture> picture(recorder.endRecording()); |
| 69 |
| 70 for (unsigned i = 0; i < SK_ARRAY_COUNT(tiles); ++i) { |
| 71 SkRect tile = SkRect::MakeXYWH(tiles[i].x * kPictureSize, |
| 72 tiles[i].y * kPictureSize, |
| 73 tiles[i].w * kPictureSize, |
| 74 tiles[i].h * kPictureSize); |
| 75 SkMatrix localMatrix; |
| 76 localMatrix.setTranslate(tiles[i].offsetX * kPictureSize, |
| 77 tiles[i].offsetY * kPictureSize); |
| 78 localMatrix.postScale(kFillSize / (2 * kPictureSize), |
| 79 kFillSize / (2 * kPictureSize)); |
| 80 fShaders[i].reset(SkShader::CreatePictureShader(picture, |
| 81 SkShader::kRepeat_TileMode, |
| 82 SkShader::kRepeat_TileMode, |
| 83 &localMatrix, |
| 84 &tile)); |
| 85 } |
| 86 } |
| 87 |
| 88 protected: |
| 89 virtual uint32_t onGetFlags() const SK_OVERRIDE { |
| 90 return kSkipTiled_Flag; |
| 91 } |
| 92 |
| 93 virtual SkString onShortName() SK_OVERRIDE { |
| 94 return SkString("pictureshadertile"); |
| 95 } |
| 96 |
| 97 virtual SkISize onISize() SK_OVERRIDE { |
| 98 return SkISize::Make(800, 600); |
| 99 } |
| 100 |
| 101 virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE { |
| 102 canvas->clear(SK_ColorBLACK); |
| 103 |
| 104 SkPaint paint; |
| 105 paint.setStyle(SkPaint::kFill_Style); |
| 106 |
| 107 for (unsigned i = 0; i < SK_ARRAY_COUNT(fShaders); ++i) { |
| 108 paint.setShader(fShaders[i]); |
| 109 |
| 110 canvas->save(); |
| 111 canvas->translate((i % kRowSize) * kFillSize * 1.1f, |
| 112 (i / kRowSize) * kFillSize * 1.1f); |
| 113 canvas->drawRect(SkRect::MakeWH(kFillSize, kFillSize), paint); |
| 114 canvas->restore(); |
| 115 } |
| 116 } |
| 117 |
| 118 private: |
| 119 void drawScene(SkCanvas* canvas, SkScalar pictureSize) { |
| 120 canvas->clear(SK_ColorWHITE); |
| 121 |
| 122 SkPaint paint; |
| 123 paint.setColor(SK_ColorGREEN); |
| 124 paint.setStyle(SkPaint::kFill_Style); |
| 125 paint.setAntiAlias(true); |
| 126 |
| 127 canvas->drawCircle(pictureSize / 4, pictureSize / 4, pictureSize / 4, pa
int); |
| 128 canvas->drawRect(SkRect::MakeXYWH(pictureSize / 2, pictureSize / 2, |
| 129 pictureSize / 2, pictureSize / 2), pai
nt); |
| 130 |
| 131 paint.setColor(SK_ColorRED); |
| 132 canvas->drawLine(pictureSize / 2, pictureSize * 1 / 3, |
| 133 pictureSize / 2, pictureSize * 2 / 3, paint); |
| 134 canvas->drawLine(pictureSize * 1 / 3, pictureSize / 2, |
| 135 pictureSize * 2 / 3, pictureSize / 2, paint); |
| 136 |
| 137 paint.setColor(SK_ColorBLACK); |
| 138 paint.setStyle(SkPaint::kStroke_Style); |
| 139 canvas->drawRect(SkRect::MakeWH(pictureSize, pictureSize), paint); |
| 140 } |
| 141 |
| 142 SkAutoTUnref<SkShader> fShaders[SK_ARRAY_COUNT(tiles)]; |
| 143 |
| 144 typedef GM INHERITED; |
| 145 }; |
| 146 |
| 147 DEF_GM( return SkNEW(PictureShaderTileGM); ) |
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