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(kPictureSize, kPictureSize, NULL, 0); 65 drawScene(pictureCanvas, kPictureSize); 66 SkAutoTUnref<SkPicture> picture(recorder.endRecording()); 67 68 for (unsigned i = 0; i < SK_ARRAY_COUNT(tiles); ++i) { 69 SkRect tile = SkRect::MakeXYWH(tiles[i].x * kPictureSize, 70 tiles[i].y * kPictureSize, 71 tiles[i].w * kPictureSize, 72 tiles[i].h * kPictureSize); 73 SkMatrix localMatrix; 74 localMatrix.setTranslate(tiles[i].offsetX * kPictureSize, 75 tiles[i].offsetY * kPictureSize); 76 localMatrix.postScale(kFillSize / (2 * kPictureSize), 77 kFillSize / (2 * kPictureSize)); 78 fShaders[i].reset(SkShader::CreatePictureShader(picture, 79 SkShader::kRepeat_TileMode, 80 SkShader::kRepeat_TileMode, 81 &localMatrix, 82 &tile)); 83 } 84 } 85 86 protected: 87 virtual uint32_t onGetFlags() const SK_OVERRIDE { 88 return kSkipTiled_Flag; 89 } 90 91 virtual SkString onShortName() SK_OVERRIDE { 92 return SkString("pictureshadertile"); 93 } 94 95 virtual SkISize onISize() SK_OVERRIDE { 96 return SkISize::Make(800, 600); 97 } 98 99 virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE { 100 canvas->clear(SK_ColorBLACK); 101 102 SkPaint paint; 103 paint.setStyle(SkPaint::kFill_Style); 104 105 for (unsigned i = 0; i < SK_ARRAY_COUNT(fShaders); ++i) { 106 paint.setShader(fShaders[i]); 107 108 canvas->save(); 109 canvas->translate((i % kRowSize) * kFillSize * 1.1f, 110 (i / kRowSize) * kFillSize * 1.1f); 111 canvas->drawRect(SkRect::MakeWH(kFillSize, kFillSize), paint); 112 canvas->restore(); 113 } 114 } 115 116 private: 117 void drawScene(SkCanvas* canvas, SkScalar pictureSize) { 118 canvas->clear(SK_ColorWHITE); 119 120 SkPaint paint; 121 paint.setColor(SK_ColorGREEN); 122 paint.setStyle(SkPaint::kFill_Style); 123 paint.setAntiAlias(true); 124 125 canvas->drawCircle(pictureSize / 4, pictureSize / 4, pictureSize / 4, paint); 126 canvas->drawRect(SkRect::MakeXYWH(pictureSize / 2, pictureSize / 2, 127 pictureSize / 2, pictureSize / 2), paint); 128 129 paint.setColor(SK_ColorRED); 130 canvas->drawLine(pictureSize / 2, pictureSize * 1 / 3, 131 pictureSize / 2, pictureSize * 2 / 3, paint); 132 canvas->drawLine(pictureSize * 1 / 3, pictureSize / 2, 133 pictureSize * 2 / 3, pictureSize / 2, paint); 134 135 paint.setColor(SK_ColorBLACK); 136 paint.setStyle(SkPaint::kStroke_Style); 137 canvas->drawRect(SkRect::MakeWH(pictureSize, pictureSize), paint); 138 } 139 140 SkAutoTUnref<SkShader> fShaders[SK_ARRAY_COUNT(tiles)]; 141 142 typedef GM INHERITED; 143 }; 144 145 DEF_GM( return SkNEW(PictureShaderTileGM); ) 146
