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| 1 |
| 2 /* |
| 3 * Copyright 2013 Google Inc. |
| 4 * |
| 5 * Use of this source code is governed by a BSD-style license that can be |
| 6 * found in the LICENSE file. |
| 7 */ |
| 8 |
| 9 #include "Test.h" |
| 10 #include "SkBitmapDevice.h" |
| 11 #include "SkCanvas.h" |
| 12 #include "SkCanvasStateUtils.h" |
| 13 #include "SkDrawFilter.h" |
| 14 #include "SkPaint.h" |
| 15 #include "SkRect.h" |
| 16 #include "SkRRect.h" |
| 17 |
| 18 static void test_complex_layers(skiatest::Reporter* reporter) { |
| 19 |
| 20 const int WIDTH = 400; |
| 21 const int HEIGHT = 400; |
| 22 const int SPACER = 10; |
| 23 |
| 24 SkRect rect = SkRect::MakeXYWH(SPACER, SPACER, WIDTH-(2*SPACER), (HEIGHT-(2*
SPACER)) / 7); |
| 25 |
| 26 const SkBitmap::Config configs[] = { SkBitmap::kRGB_565_Config, |
| 27 SkBitmap::kARGB_8888_Config |
| 28 }; |
| 29 const int configCount = sizeof(configs) / sizeof(SkBitmap::Config); |
| 30 |
| 31 const int layerAlpha[] = { 255, 255, 0 }; |
| 32 const SkCanvas::SaveFlags flags[] = { SkCanvas::kARGB_NoClipLayer_SaveFlag, |
| 33 SkCanvas::kARGB_ClipLayer_SaveFlag, |
| 34 SkCanvas::kARGB_NoClipLayer_SaveFlag |
| 35 }; |
| 36 REPORTER_ASSERT(reporter, sizeof(layerAlpha) == sizeof(flags)); |
| 37 const int layerCombinations = sizeof(layerAlpha) / sizeof(int); |
| 38 |
| 39 for (int i = 0; i < configCount; ++i) { |
| 40 SkBitmap bitmaps[2]; |
| 41 for (int j = 0; j < 2; ++j) { |
| 42 bitmaps[j].setConfig(configs[i], WIDTH, HEIGHT); |
| 43 bitmaps[j].allocPixels(); |
| 44 |
| 45 SkCanvas canvas(bitmaps[j]); |
| 46 |
| 47 canvas.drawColor(SK_ColorRED); |
| 48 |
| 49 for (int k = 0; k < layerCombinations; ++k) { |
| 50 // draw a rect within the layer's bounds and again outside the l
ayer's bounds |
| 51 canvas.saveLayerAlpha(&rect, layerAlpha[k], flags[k]); |
| 52 |
| 53 SkCanvasState* state = NULL; |
| 54 SkCanvas* tmpCanvas = NULL; |
| 55 if (j) { |
| 56 state = SkCanvasStateUtils::CaptureCanvasState(&canvas); |
| 57 REPORTER_ASSERT(reporter, state); |
| 58 tmpCanvas = SkCanvasStateUtils::CreateFromCanvasState(state)
; |
| 59 REPORTER_ASSERT(reporter, tmpCanvas); |
| 60 } else { |
| 61 tmpCanvas = SkRef(&canvas); |
| 62 } |
| 63 |
| 64 SkPaint bluePaint; |
| 65 bluePaint.setColor(SK_ColorBLUE); |
| 66 bluePaint.setStyle(SkPaint::kFill_Style); |
| 67 |
| 68 tmpCanvas->drawRect(rect, bluePaint); |
| 69 tmpCanvas->translate(0, rect.height() + SPACER); |
| 70 tmpCanvas->drawRect(rect, bluePaint); |
| 71 |
| 72 tmpCanvas->unref(); |
| 73 SkCanvasStateUtils::ReleaseCanvasState(state); |
| 74 |
| 75 canvas.restore(); |
| 76 |
| 77 // translate the canvas for the next iteration |
| 78 canvas.translate(0, 2*(rect.height() + SPACER)); |
| 79 } |
| 80 } |
| 81 |
| 82 // now we memcmp the two bitmaps |
| 83 REPORTER_ASSERT(reporter, bitmaps[0].getSize() == bitmaps[1].getSize()); |
| 84 REPORTER_ASSERT(reporter, !memcmp(bitmaps[0].getPixels(), |
| 85 bitmaps[1].getPixels(), |
| 86 bitmaps[0].getSize())); |
| 87 } |
| 88 } |
| 89 |
| 90 //////////////////////////////////////////////////////////////////////////////// |
| 91 |
| 92 class TestDrawFilter : public SkDrawFilter { |
| 93 public: |
| 94 virtual bool filter(SkPaint*, Type) SK_OVERRIDE { return true; } |
| 95 }; |
| 96 |
| 97 static void test_draw_filters(skiatest::Reporter* reporter) { |
| 98 TestDrawFilter drawFilter; |
| 99 SkBitmapDevice device(SkBitmap::kARGB_8888_Config, 10, 10); |
| 100 SkCanvas canvas(&device); |
| 101 |
| 102 canvas.setDrawFilter(&drawFilter); |
| 103 |
| 104 SkCanvasState* state = SkCanvasStateUtils::CaptureCanvasState(&canvas); |
| 105 REPORTER_ASSERT(reporter, state); |
| 106 SkCanvas* tmpCanvas = SkCanvasStateUtils::CreateFromCanvasState(state); |
| 107 REPORTER_ASSERT(reporter, tmpCanvas); |
| 108 |
| 109 REPORTER_ASSERT(reporter, NULL != canvas.getDrawFilter()); |
| 110 REPORTER_ASSERT(reporter, NULL == tmpCanvas->getDrawFilter()); |
| 111 |
| 112 tmpCanvas->unref(); |
| 113 SkCanvasStateUtils::ReleaseCanvasState(state); |
| 114 } |
| 115 |
| 116 //////////////////////////////////////////////////////////////////////////////// |
| 117 |
| 118 static void test_soft_clips(skiatest::Reporter* reporter) { |
| 119 SkBitmapDevice device(SkBitmap::kARGB_8888_Config, 10, 10); |
| 120 SkCanvas canvas(&device); |
| 121 |
| 122 SkRRect roundRect; |
| 123 roundRect.setOval(SkRect::MakeWH(5, 5)); |
| 124 |
| 125 canvas.clipRRect(roundRect, SkRegion::kIntersect_Op, true); |
| 126 |
| 127 SkCanvasState* state = SkCanvasStateUtils::CaptureCanvasState(&canvas); |
| 128 REPORTER_ASSERT(reporter, !state); |
| 129 } |
| 130 |
| 131 //////////////////////////////////////////////////////////////////////////////// |
| 132 |
| 133 static void test_canvas_state_utils(skiatest::Reporter* reporter) { |
| 134 test_complex_layers(reporter); |
| 135 test_draw_filters(reporter); |
| 136 test_soft_clips(reporter); |
| 137 } |
| 138 |
| 139 #include "TestClassDef.h" |
| 140 DEFINE_TESTCLASS("CanvasState", TestCanvasStateClass, test_canvas_state_utils) |
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