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| 1 /* |
| 2 * Copyright 2013 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 namespace skiagm { |
| 11 |
| 12 // Draw various width thin rects at 1/8 horizontal pixel increments |
| 13 class ThinRectsGM : public GM { |
| 14 public: |
| 15 ThinRectsGM() { |
| 16 this->setBGColor(0xFF000000); |
| 17 } |
| 18 |
| 19 protected: |
| 20 virtual SkString onShortName() SK_OVERRIDE { |
| 21 return SkString("thinrects"); |
| 22 } |
| 23 |
| 24 virtual SkISize onISize() SK_OVERRIDE { |
| 25 return make_isize(240, 320); |
| 26 } |
| 27 |
| 28 virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE { |
| 29 |
| 30 SkPaint white; |
| 31 white.setColor(SK_ColorWHITE); |
| 32 white.setAntiAlias(true); |
| 33 |
| 34 SkPaint green; |
| 35 green.setColor(SK_ColorGREEN); |
| 36 green.setAntiAlias(true); |
| 37 |
| 38 for (int i = 0; i < 8; ++i) { |
| 39 canvas->save(); |
| 40 canvas->translate(i*0.125f, i*40.0f); |
| 41 DrawVertRects(canvas, white); |
| 42 |
| 43 canvas->translate(40.0f, 0.0f); |
| 44 DrawVertRects(canvas, green); |
| 45 canvas->restore(); |
| 46 |
| 47 canvas->save(); |
| 48 canvas->translate(80.0f, i*40.0f + i*0.125f); |
| 49 DrawHorizRects(canvas, white); |
| 50 |
| 51 canvas->translate(40.0f, 0.0f); |
| 52 DrawHorizRects(canvas, green); |
| 53 canvas->restore(); |
| 54 |
| 55 canvas->save(); |
| 56 canvas->translate(160.0f + i*0.125f, |
| 57 i*40.0f + i*0.125f); |
| 58 DrawSquares(canvas, white); |
| 59 |
| 60 canvas->translate(40.0f, 0.0f); |
| 61 DrawSquares(canvas, green); |
| 62 canvas->restore(); |
| 63 } |
| 64 } |
| 65 |
| 66 private: |
| 67 static void DrawVertRects(SkCanvas* canvas, const SkPaint& p) { |
| 68 static const SkRect vertRects[] = { |
| 69 { 1, 1, 5.0f, 21 }, // 4 pix wide |
| 70 { 8, 1, 10.0f, 21 }, // 2 pix wide |
| 71 { 13, 1, 14.0f, 21 }, // 1 pix wide |
| 72 { 17, 1, 17.5f, 21 }, // 1/2 pix wide |
| 73 { 21, 1, 21.25f, 21 }, // 1/4 pix wide |
| 74 { 25, 1, 25.125f, 21 }, // 1/8 pix wide |
| 75 { 29, 1, 29.0f, 21 } // 0 pix wide |
| 76 }; |
| 77 |
| 78 for (int j = 0; j < SK_ARRAY_COUNT(vertRects); ++j) { |
| 79 canvas->drawRect(vertRects[j], p); |
| 80 } |
| 81 } |
| 82 |
| 83 static void DrawHorizRects(SkCanvas* canvas, const SkPaint& p) { |
| 84 static const SkRect horizRects[] = { |
| 85 { 1, 1, 21, 5.0f }, // 4 pix high |
| 86 { 1, 8, 21, 10.0f }, // 2 pix high |
| 87 { 1, 13, 21, 14.0f }, // 1 pix high |
| 88 { 1, 17, 21, 17.5f }, // 1/2 pix high |
| 89 { 1, 21, 21, 21.25f }, // 1/4 pix high |
| 90 { 1, 25, 21, 25.125f }, // 1/8 pix high |
| 91 { 1, 29, 21, 29.0f } // 0 pix high |
| 92 }; |
| 93 |
| 94 for (int j = 0; j < SK_ARRAY_COUNT(horizRects); ++j) { |
| 95 canvas->drawRect(horizRects[j], p); |
| 96 } |
| 97 } |
| 98 |
| 99 static void DrawSquares(SkCanvas* canvas, const SkPaint& p) { |
| 100 static const SkRect squares[] = { |
| 101 { 1, 1, 5.0f, 5.0f }, // 4 pix |
| 102 { 8, 8, 10.0f, 10.0f }, // 2 pix |
| 103 { 13, 13, 14.0f, 14.0f }, // 1 pix |
| 104 { 17, 17, 17.5f, 17.5f }, // 1/2 pix |
| 105 { 21, 21, 21.25f, 21.25f }, // 1/4 pix |
| 106 { 25, 25, 25.125f, 25.125f }, // 1/8 pix |
| 107 { 29, 29, 29.0f, 29.0f } // 0 pix |
| 108 }; |
| 109 |
| 110 for (int j = 0; j < SK_ARRAY_COUNT(squares); ++j) { |
| 111 canvas->drawRect(squares[j], p); |
| 112 } |
| 113 } |
| 114 |
| 115 typedef GM INHERITED; |
| 116 }; |
| 117 |
| 118 ////////////////////////////////////////////////////////////////////////////// |
| 119 |
| 120 static GM* MyFactory(void*) { return new ThinRectsGM; } |
| 121 static GMRegistry reg(MyFactory); |
| 122 |
| 123 } |
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