djsollen@google.com | 5587ac0 | 2013-08-29 20:20:40 +0000 | [diff] [blame^] | 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 layer'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) |