1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "base/basictypes.h" 6 #include "base/memory/shared_memory.h" 7 #include "skia/ext/platform_canvas.h" 8 #include "testing/gtest/include/gtest/gtest.h" 9 #include "ui/gfx/blit.h" 10 #include "ui/gfx/point.h" 11 #include "ui/gfx/rect.h" 12 13 namespace { 14 15 // Fills the given canvas with the values by duplicating the values into each 16 // color channel for the corresponding pixel. 17 // 18 // Example values = {{0x0, 0x01}, {0x12, 0xFF}} would give a canvas with: 19 // 0x00000000 0x01010101 20 // 0x12121212 0xFFFFFFFF 21 template<int w, int h> 22 void SetToCanvas(skia::PlatformCanvas* canvas, uint8 values[h][w]) { 23 SkBitmap& bitmap = const_cast<SkBitmap&>( 24 skia::GetTopDevice(*canvas)->accessBitmap(true)); 25 SkAutoLockPixels lock(bitmap); 26 ASSERT_EQ(w, bitmap.width()); 27 ASSERT_EQ(h, bitmap.height()); 28 29 for (int y = 0; y < h; y++) { 30 for (int x = 0; x < w; x++) { 31 uint8 value = values[y][x]; 32 *bitmap.getAddr32(x, y) = 33 (value << 24) | (value << 16) | (value << 8) | value; 34 } 35 } 36 } 37 38 // Checks each pixel in the given canvas and see if it is made up of the given 39 // values, where each value has been duplicated into each channel of the given 40 // bitmap (see SetToCanvas above). 41 template<int w, int h> 42 void VerifyCanvasValues(skia::PlatformCanvas* canvas, uint8 values[h][w]) { 43 SkBitmap& bitmap = const_cast<SkBitmap&>( 44 skia::GetTopDevice(*canvas)->accessBitmap(true)); 45 SkAutoLockPixels lock(bitmap); 46 ASSERT_EQ(w, bitmap.width()); 47 ASSERT_EQ(h, bitmap.height()); 48 49 for (int y = 0; y < h; y++) { 50 for (int x = 0; x < w; x++) { 51 uint8 value = values[y][x]; 52 uint32 expected = 53 (value << 24) | (value << 16) | (value << 8) | value; 54 ASSERT_EQ(expected, *bitmap.getAddr32(x, y)); 55 } 56 } 57 } 58 59 } // namespace 60 61 TEST(Blit, ScrollCanvas) { 62 static const int kCanvasWidth = 5; 63 static const int kCanvasHeight = 5; 64 skia::RefPtr<SkCanvas> canvas = skia::AdoptRef( 65 skia::CreatePlatformCanvas(kCanvasWidth, kCanvasHeight, true)); 66 uint8 initial_values[kCanvasHeight][kCanvasWidth] = { 67 { 0x00, 0x01, 0x02, 0x03, 0x04 }, 68 { 0x10, 0x11, 0x12, 0x13, 0x14 }, 69 { 0x20, 0x21, 0x22, 0x23, 0x24 }, 70 { 0x30, 0x31, 0x32, 0x33, 0x34 }, 71 { 0x40, 0x41, 0x42, 0x43, 0x44 }}; 72 SetToCanvas<5, 5>(canvas.get(), initial_values); 73 74 // Sanity check on input. 75 VerifyCanvasValues<5, 5>(canvas.get(), initial_values); 76 77 // Scroll none and make sure it's a NOP. 78 gfx::ScrollCanvas(canvas.get(), 79 gfx::Rect(0, 0, kCanvasWidth, kCanvasHeight), 80 gfx::Vector2d(0, 0)); 81 VerifyCanvasValues<5, 5>(canvas.get(), initial_values); 82 83 // Scroll the center 3 pixels up one. 84 gfx::Rect center_three(1, 1, 3, 3); 85 gfx::ScrollCanvas(canvas.get(), center_three, gfx::Vector2d(0, -1)); 86 uint8 scroll_up_expected[kCanvasHeight][kCanvasWidth] = { 87 { 0x00, 0x01, 0x02, 0x03, 0x04 }, 88 { 0x10, 0x21, 0x22, 0x23, 0x14 }, 89 { 0x20, 0x31, 0x32, 0x33, 0x24 }, 90 { 0x30, 0x31, 0x32, 0x33, 0x34 }, 91 { 0x40, 0x41, 0x42, 0x43, 0x44 }}; 92 VerifyCanvasValues<5, 5>(canvas.get(), scroll_up_expected); 93 94 // Reset and scroll the center 3 pixels down one. 95 SetToCanvas<5, 5>(canvas.get(), initial_values); 96 gfx::ScrollCanvas(canvas.get(), center_three, gfx::Vector2d(0, 1)); 97 uint8 scroll_down_expected[kCanvasHeight][kCanvasWidth] = { 98 { 0x00, 0x01, 0x02, 0x03, 0x04 }, 99 { 0x10, 0x11, 0x12, 0x13, 0x14 }, 100 { 0x20, 0x11, 0x12, 0x13, 0x24 }, 101 { 0x30, 0x21, 0x22, 0x23, 0x34 }, 102 { 0x40, 0x41, 0x42, 0x43, 0x44 }}; 103 VerifyCanvasValues<5, 5>(canvas.get(), scroll_down_expected); 104 105 // Reset and scroll the center 3 pixels right one. 106 SetToCanvas<5, 5>(canvas.get(), initial_values); 107 gfx::ScrollCanvas(canvas.get(), center_three, gfx::Vector2d(1, 0)); 108 uint8 scroll_right_expected[kCanvasHeight][kCanvasWidth] = { 109 { 0x00, 0x01, 0x02, 0x03, 0x04 }, 110 { 0x10, 0x11, 0x11, 0x12, 0x14 }, 111 { 0x20, 0x21, 0x21, 0x22, 0x24 }, 112 { 0x30, 0x31, 0x31, 0x32, 0x34 }, 113 { 0x40, 0x41, 0x42, 0x43, 0x44 }}; 114 VerifyCanvasValues<5, 5>(canvas.get(), scroll_right_expected); 115 116 // Reset and scroll the center 3 pixels left one. 117 SetToCanvas<5, 5>(canvas.get(), initial_values); 118 gfx::ScrollCanvas(canvas.get(), center_three, gfx::Vector2d(-1, 0)); 119 uint8 scroll_left_expected[kCanvasHeight][kCanvasWidth] = { 120 { 0x00, 0x01, 0x02, 0x03, 0x04 }, 121 { 0x10, 0x12, 0x13, 0x13, 0x14 }, 122 { 0x20, 0x22, 0x23, 0x23, 0x24 }, 123 { 0x30, 0x32, 0x33, 0x33, 0x34 }, 124 { 0x40, 0x41, 0x42, 0x43, 0x44 }}; 125 VerifyCanvasValues<5, 5>(canvas.get(), scroll_left_expected); 126 127 // Diagonal scroll. 128 SetToCanvas<5, 5>(canvas.get(), initial_values); 129 gfx::ScrollCanvas(canvas.get(), center_three, gfx::Vector2d(2, 2)); 130 uint8 scroll_diagonal_expected[kCanvasHeight][kCanvasWidth] = { 131 { 0x00, 0x01, 0x02, 0x03, 0x04 }, 132 { 0x10, 0x11, 0x12, 0x13, 0x14 }, 133 { 0x20, 0x21, 0x22, 0x23, 0x24 }, 134 { 0x30, 0x31, 0x32, 0x11, 0x34 }, 135 { 0x40, 0x41, 0x42, 0x43, 0x44 }}; 136 VerifyCanvasValues<5, 5>(canvas.get(), scroll_diagonal_expected); 137 } 138 139 #if defined(OS_WIN) 140 141 TEST(Blit, WithSharedMemory) { 142 const int kCanvasWidth = 5; 143 const int kCanvasHeight = 5; 144 base::SharedMemory shared_mem; 145 ASSERT_TRUE(shared_mem.CreateAnonymous(kCanvasWidth * kCanvasHeight)); 146 base::SharedMemoryHandle section = shared_mem.handle(); 147 skia::RefPtr<SkCanvas> canvas = skia::AdoptRef( 148 skia::CreatePlatformCanvas(kCanvasWidth, kCanvasHeight, true, section, 149 skia::RETURN_NULL_ON_FAILURE)); 150 ASSERT_TRUE(canvas); 151 shared_mem.Close(); 152 153 uint8 initial_values[kCanvasHeight][kCanvasWidth] = { 154 { 0x00, 0x01, 0x02, 0x03, 0x04 }, 155 { 0x10, 0x11, 0x12, 0x13, 0x14 }, 156 { 0x20, 0x21, 0x22, 0x23, 0x24 }, 157 { 0x30, 0x31, 0x32, 0x33, 0x34 }, 158 { 0x40, 0x41, 0x42, 0x43, 0x44 }}; 159 SetToCanvas<5, 5>(canvas.get(), initial_values); 160 161 // Sanity check on input. 162 VerifyCanvasValues<5, 5>(canvas.get(), initial_values); 163 } 164 165 #endif 166 167
