1 // Copyright (c) 2012 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 // TODO(awalker): clean up the const/non-const reference handling in this test 6 7 #include "build/build_config.h" 8 9 #if defined(OS_MACOSX) 10 #import <ApplicationServices/ApplicationServices.h> 11 #endif 12 13 #if !defined(OS_WIN) 14 #include <unistd.h> 15 #endif 16 17 #include "base/memory/scoped_ptr.h" 18 #include "skia/ext/platform_canvas.h" 19 #include "skia/ext/platform_device.h" 20 #include "testing/gtest/include/gtest/gtest.h" 21 #include "third_party/skia/include/core/SkBitmap.h" 22 #include "third_party/skia/include/core/SkColor.h" 23 #include "third_party/skia/include/core/SkPixelRef.h" 24 25 namespace skia { 26 27 namespace { 28 29 // Return true if the canvas is filled to canvas_color, and contains a single 30 // rectangle filled to rect_color. This function ignores the alpha channel, 31 // since Windows will sometimes clear the alpha channel when drawing, and we 32 // will fix that up later in cases it's necessary. 33 bool VerifyRect(const PlatformCanvas& canvas, 34 uint32_t canvas_color, uint32_t rect_color, 35 int x, int y, int w, int h) { 36 SkBaseDevice* device = skia::GetTopDevice(canvas); 37 const SkBitmap& bitmap = device->accessBitmap(false); 38 SkAutoLockPixels lock(bitmap); 39 40 // For masking out the alpha values. 41 uint32_t alpha_mask = 0xFF << SK_A32_SHIFT; 42 43 for (int cur_y = 0; cur_y < bitmap.height(); cur_y++) { 44 for (int cur_x = 0; cur_x < bitmap.width(); cur_x++) { 45 if (cur_x >= x && cur_x < x + w && 46 cur_y >= y && cur_y < y + h) { 47 // Inside the square should be rect_color 48 if ((*bitmap.getAddr32(cur_x, cur_y) | alpha_mask) != 49 (rect_color | alpha_mask)) 50 return false; 51 } else { 52 // Outside the square should be canvas_color 53 if ((*bitmap.getAddr32(cur_x, cur_y) | alpha_mask) != 54 (canvas_color | alpha_mask)) 55 return false; 56 } 57 } 58 } 59 return true; 60 } 61 62 #if !defined(OS_MACOSX) 63 bool IsOfColor(const SkBitmap& bitmap, int x, int y, uint32_t color) { 64 // For masking out the alpha values. 65 static uint32_t alpha_mask = 0xFF << SK_A32_SHIFT; 66 return (*bitmap.getAddr32(x, y) | alpha_mask) == (color | alpha_mask); 67 } 68 69 // Return true if canvas has something that passes for a rounded-corner 70 // rectangle. Basically, we're just checking to make sure that the pixels in the 71 // middle are of rect_color and pixels in the corners are of canvas_color. 72 bool VerifyRoundedRect(const PlatformCanvas& canvas, 73 uint32_t canvas_color, uint32_t rect_color, 74 int x, int y, int w, int h) { 75 SkBaseDevice* device = skia::GetTopDevice(canvas); 76 const SkBitmap& bitmap = device->accessBitmap(false); 77 SkAutoLockPixels lock(bitmap); 78 79 // Check corner points first. They should be of canvas_color. 80 if (!IsOfColor(bitmap, x, y, canvas_color)) return false; 81 if (!IsOfColor(bitmap, x + w, y, canvas_color)) return false; 82 if (!IsOfColor(bitmap, x, y + h, canvas_color)) return false; 83 if (!IsOfColor(bitmap, x + w, y, canvas_color)) return false; 84 85 // Check middle points. They should be of rect_color. 86 if (!IsOfColor(bitmap, (x + w / 2), y, rect_color)) return false; 87 if (!IsOfColor(bitmap, x, (y + h / 2), rect_color)) return false; 88 if (!IsOfColor(bitmap, x + w, (y + h / 2), rect_color)) return false; 89 if (!IsOfColor(bitmap, (x + w / 2), y + h, rect_color)) return false; 90 91 return true; 92 } 93 #endif 94 95 // Checks whether there is a white canvas with a black square at the given 96 // location in pixels (not in the canvas coordinate system). 97 bool VerifyBlackRect(const PlatformCanvas& canvas, int x, int y, int w, int h) { 98 return VerifyRect(canvas, SK_ColorWHITE, SK_ColorBLACK, x, y, w, h); 99 } 100 101 // Check that every pixel in the canvas is a single color. 102 bool VerifyCanvasColor(const PlatformCanvas& canvas, uint32_t canvas_color) { 103 return VerifyRect(canvas, canvas_color, 0, 0, 0, 0, 0); 104 } 105 106 #if defined(OS_WIN) 107 void DrawNativeRect(PlatformCanvas& canvas, int x, int y, int w, int h) { 108 skia::ScopedPlatformPaint scoped_platform_paint(&canvas); 109 HDC dc = scoped_platform_paint.GetPlatformSurface(); 110 111 RECT inner_rc; 112 inner_rc.left = x; 113 inner_rc.top = y; 114 inner_rc.right = x + w; 115 inner_rc.bottom = y + h; 116 FillRect(dc, &inner_rc, reinterpret_cast<HBRUSH>(GetStockObject(BLACK_BRUSH))); 117 } 118 #elif defined(OS_MACOSX) 119 void DrawNativeRect(PlatformCanvas& canvas, int x, int y, int w, int h) { 120 skia::ScopedPlatformPaint scoped_platform_paint(&canvas); 121 CGContextRef context = scoped_platform_paint.GetPlatformSurface(); 122 123 CGRect inner_rc = CGRectMake(x, y, w, h); 124 // RGBA opaque black 125 CGColorRef black = CGColorCreateGenericRGB(0.0, 0.0, 0.0, 1.0); 126 CGContextSetFillColorWithColor(context, black); 127 CGColorRelease(black); 128 CGContextFillRect(context, inner_rc); 129 } 130 #else 131 void DrawNativeRect(PlatformCanvas& canvas, int x, int y, int w, int h) { 132 notImplemented(); 133 } 134 #endif 135 136 // Clips the contents of the canvas to the given rectangle. This will be 137 // intersected with any existing clip. 138 void AddClip(PlatformCanvas& canvas, int x, int y, int w, int h) { 139 SkRect rect; 140 rect.set(SkIntToScalar(x), SkIntToScalar(y), 141 SkIntToScalar(x + w), SkIntToScalar(y + h)); 142 canvas.clipRect(rect); 143 } 144 145 class LayerSaver { 146 public: 147 LayerSaver(PlatformCanvas& canvas, int x, int y, int w, int h) 148 : canvas_(canvas), 149 x_(x), 150 y_(y), 151 w_(w), 152 h_(h) { 153 SkRect bounds; 154 bounds.set(SkIntToScalar(x_), SkIntToScalar(y_), 155 SkIntToScalar(right()), SkIntToScalar(bottom())); 156 canvas_.saveLayer(&bounds, NULL); 157 canvas.clear(SkColorSetARGB(0, 0, 0, 0)); 158 } 159 160 ~LayerSaver() { 161 canvas_.restore(); 162 } 163 164 int x() const { return x_; } 165 int y() const { return y_; } 166 int w() const { return w_; } 167 int h() const { return h_; } 168 169 // Returns the EXCLUSIVE far bounds of the layer. 170 int right() const { return x_ + w_; } 171 int bottom() const { return y_ + h_; } 172 173 private: 174 PlatformCanvas& canvas_; 175 int x_, y_, w_, h_; 176 }; 177 178 // Size used for making layers in many of the below tests. 179 const int kLayerX = 2; 180 const int kLayerY = 3; 181 const int kLayerW = 9; 182 const int kLayerH = 7; 183 184 // Size used by some tests to draw a rectangle inside the layer. 185 const int kInnerX = 4; 186 const int kInnerY = 5; 187 const int kInnerW = 2; 188 const int kInnerH = 3; 189 190 } 191 192 // This just checks that our checking code is working properly, it just uses 193 // regular skia primitives. 194 TEST(PlatformCanvas, SkLayer) { 195 // Create the canvas initialized to opaque white. 196 RefPtr<SkCanvas> canvas = AdoptRef(CreatePlatformCanvas(16, 16, true)); 197 canvas->drawColor(SK_ColorWHITE); 198 199 // Make a layer and fill it completely to make sure that the bounds are 200 // correct. 201 { 202 LayerSaver layer(*canvas, kLayerX, kLayerY, kLayerW, kLayerH); 203 canvas->drawColor(SK_ColorBLACK); 204 } 205 EXPECT_TRUE(VerifyBlackRect(*canvas, kLayerX, kLayerY, kLayerW, kLayerH)); 206 } 207 208 #if !defined(USE_AURA) // http://crbug.com/154358 209 210 // Test native clipping. 211 TEST(PlatformCanvas, ClipRegion) { 212 // Initialize a white canvas 213 RefPtr<SkCanvas> canvas = AdoptRef(CreatePlatformCanvas(16, 16, true)); 214 canvas->drawColor(SK_ColorWHITE); 215 EXPECT_TRUE(VerifyCanvasColor(*canvas, SK_ColorWHITE)); 216 217 // Test that initially the canvas has no clip region, by filling it 218 // with a black rectangle. 219 // Note: Don't use LayerSaver, since internally it sets a clip region. 220 DrawNativeRect(*canvas, 0, 0, 16, 16); 221 EXPECT_TRUE(VerifyCanvasColor(*canvas, SK_ColorBLACK)); 222 223 // Test that intersecting disjoint clip rectangles sets an empty clip region 224 canvas->drawColor(SK_ColorWHITE); 225 EXPECT_TRUE(VerifyCanvasColor(*canvas, SK_ColorWHITE)); 226 { 227 LayerSaver layer(*canvas, 0, 0, 16, 16); 228 AddClip(*canvas, 2, 3, 4, 5); 229 AddClip(*canvas, 4, 9, 10, 10); 230 DrawNativeRect(*canvas, 0, 0, 16, 16); 231 } 232 EXPECT_TRUE(VerifyCanvasColor(*canvas, SK_ColorWHITE)); 233 } 234 235 #endif // !defined(USE_AURA) 236 237 // Test the layers get filled properly by native rendering. 238 TEST(PlatformCanvas, FillLayer) { 239 // Create the canvas initialized to opaque white. 240 RefPtr<SkCanvas> canvas = AdoptRef(CreatePlatformCanvas(16, 16, true)); 241 242 // Make a layer and fill it completely to make sure that the bounds are 243 // correct. 244 canvas->drawColor(SK_ColorWHITE); 245 { 246 LayerSaver layer(*canvas, kLayerX, kLayerY, kLayerW, kLayerH); 247 DrawNativeRect(*canvas, 0, 0, 100, 100); 248 #if defined(OS_WIN) 249 MakeOpaque(canvas.get(), 0, 0, 100, 100); 250 #endif 251 } 252 EXPECT_TRUE(VerifyBlackRect(*canvas, kLayerX, kLayerY, kLayerW, kLayerH)); 253 254 // Make a layer and fill it partially to make sure the translation is correct. 255 canvas->drawColor(SK_ColorWHITE); 256 { 257 LayerSaver layer(*canvas, kLayerX, kLayerY, kLayerW, kLayerH); 258 DrawNativeRect(*canvas, kInnerX, kInnerY, kInnerW, kInnerH); 259 #if defined(OS_WIN) 260 MakeOpaque(canvas.get(), kInnerX, kInnerY, kInnerW, kInnerH); 261 #endif 262 } 263 EXPECT_TRUE(VerifyBlackRect(*canvas, kInnerX, kInnerY, kInnerW, kInnerH)); 264 265 // Add a clip on the layer and fill to make sure clip is correct. 266 canvas->drawColor(SK_ColorWHITE); 267 { 268 LayerSaver layer(*canvas, kLayerX, kLayerY, kLayerW, kLayerH); 269 canvas->save(); 270 AddClip(*canvas, kInnerX, kInnerY, kInnerW, kInnerH); 271 DrawNativeRect(*canvas, 0, 0, 100, 100); 272 #if defined(OS_WIN) 273 MakeOpaque(canvas.get(), kInnerX, kInnerY, kInnerW, kInnerH); 274 #endif 275 canvas->restore(); 276 } 277 EXPECT_TRUE(VerifyBlackRect(*canvas, kInnerX, kInnerY, kInnerW, kInnerH)); 278 279 // Add a clip and then make the layer to make sure the clip is correct. 280 canvas->drawColor(SK_ColorWHITE); 281 canvas->save(); 282 AddClip(*canvas, kInnerX, kInnerY, kInnerW, kInnerH); 283 { 284 LayerSaver layer(*canvas, kLayerX, kLayerY, kLayerW, kLayerH); 285 DrawNativeRect(*canvas, 0, 0, 100, 100); 286 #if defined(OS_WIN) 287 MakeOpaque(canvas.get(), 0, 0, 100, 100); 288 #endif 289 } 290 canvas->restore(); 291 EXPECT_TRUE(VerifyBlackRect(*canvas, kInnerX, kInnerY, kInnerW, kInnerH)); 292 } 293 294 #if !defined(USE_AURA) // http://crbug.com/154358 295 296 // Test that translation + make layer works properly. 297 TEST(PlatformCanvas, TranslateLayer) { 298 // Create the canvas initialized to opaque white. 299 RefPtr<SkCanvas> canvas = AdoptRef(CreatePlatformCanvas(16, 16, true)); 300 301 // Make a layer and fill it completely to make sure that the bounds are 302 // correct. 303 canvas->drawColor(SK_ColorWHITE); 304 canvas->save(); 305 canvas->translate(1, 1); 306 { 307 LayerSaver layer(*canvas, kLayerX, kLayerY, kLayerW, kLayerH); 308 DrawNativeRect(*canvas, 0, 0, 100, 100); 309 #if defined(OS_WIN) 310 MakeOpaque(canvas.get(), 0, 0, 100, 100); 311 #endif 312 } 313 canvas->restore(); 314 EXPECT_TRUE(VerifyBlackRect(*canvas, kLayerX + 1, kLayerY + 1, 315 kLayerW, kLayerH)); 316 317 // Translate then make the layer. 318 canvas->drawColor(SK_ColorWHITE); 319 canvas->save(); 320 canvas->translate(1, 1); 321 { 322 LayerSaver layer(*canvas, kLayerX, kLayerY, kLayerW, kLayerH); 323 DrawNativeRect(*canvas, kInnerX, kInnerY, kInnerW, kInnerH); 324 #if defined(OS_WIN) 325 MakeOpaque(canvas.get(), kInnerX, kInnerY, kInnerW, kInnerH); 326 #endif 327 } 328 canvas->restore(); 329 EXPECT_TRUE(VerifyBlackRect(*canvas, kInnerX + 1, kInnerY + 1, 330 kInnerW, kInnerH)); 331 332 // Make the layer then translate. 333 canvas->drawColor(SK_ColorWHITE); 334 canvas->save(); 335 { 336 LayerSaver layer(*canvas, kLayerX, kLayerY, kLayerW, kLayerH); 337 canvas->translate(1, 1); 338 DrawNativeRect(*canvas, kInnerX, kInnerY, kInnerW, kInnerH); 339 #if defined(OS_WIN) 340 MakeOpaque(canvas.get(), kInnerX, kInnerY, kInnerW, kInnerH); 341 #endif 342 } 343 canvas->restore(); 344 EXPECT_TRUE(VerifyBlackRect(*canvas, kInnerX + 1, kInnerY + 1, 345 kInnerW, kInnerH)); 346 347 // Translate both before and after, and have a clip. 348 canvas->drawColor(SK_ColorWHITE); 349 canvas->save(); 350 canvas->translate(1, 1); 351 { 352 LayerSaver layer(*canvas, kLayerX, kLayerY, kLayerW, kLayerH); 353 canvas->drawColor(SK_ColorWHITE); 354 canvas->translate(1, 1); 355 AddClip(*canvas, kInnerX + 1, kInnerY + 1, kInnerW - 1, kInnerH - 1); 356 DrawNativeRect(*canvas, 0, 0, 100, 100); 357 #if defined(OS_WIN) 358 MakeOpaque(canvas.get(), kLayerX, kLayerY, kLayerW, kLayerH); 359 #endif 360 } 361 canvas->restore(); 362 EXPECT_TRUE(VerifyBlackRect(*canvas, kInnerX + 3, kInnerY + 3, 363 kInnerW - 1, kInnerH - 1)); 364 365 // TODO(dglazkov): Figure out why this fails on Mac (antialiased clipping?), 366 // modify test and remove this guard. 367 #if !defined(OS_MACOSX) 368 // Translate both before and after, and have a path clip. 369 canvas->drawColor(SK_ColorWHITE); 370 canvas->save(); 371 canvas->translate(1, 1); 372 { 373 LayerSaver layer(*canvas, kLayerX, kLayerY, kLayerW, kLayerH); 374 canvas->drawColor(SK_ColorWHITE); 375 canvas->translate(1, 1); 376 377 SkPath path; 378 SkRect rect; 379 rect.iset(kInnerX - 1, kInnerY - 1, 380 kInnerX + kInnerW, kInnerY + kInnerH); 381 const SkScalar kRadius = 2.0; 382 path.addRoundRect(rect, kRadius, kRadius); 383 canvas->clipPath(path); 384 385 DrawNativeRect(*canvas, 0, 0, 100, 100); 386 #if defined(OS_WIN) 387 MakeOpaque(canvas.get(), kLayerX, kLayerY, kLayerW, kLayerH); 388 #endif 389 } 390 canvas->restore(); 391 EXPECT_TRUE(VerifyRoundedRect(*canvas, SK_ColorWHITE, SK_ColorBLACK, 392 kInnerX + 1, kInnerY + 1, kInnerW, kInnerH)); 393 #endif 394 } 395 396 #endif // #if !defined(USE_AURA) 397 398 TEST(PlatformBitmapTest, PlatformBitmap) { 399 const int kWidth = 400; 400 const int kHeight = 300; 401 scoped_ptr<PlatformBitmap> platform_bitmap(new PlatformBitmap); 402 403 EXPECT_TRUE(0 == platform_bitmap->GetSurface()); 404 EXPECT_TRUE(platform_bitmap->GetBitmap().empty()); 405 EXPECT_TRUE(platform_bitmap->GetBitmap().isNull()); 406 407 EXPECT_TRUE(platform_bitmap->Allocate(kWidth, kHeight, /*is_opaque=*/false)); 408 409 EXPECT_TRUE(0 != platform_bitmap->GetSurface()); 410 EXPECT_FALSE(platform_bitmap->GetBitmap().empty()); 411 EXPECT_FALSE(platform_bitmap->GetBitmap().isNull()); 412 EXPECT_EQ(kWidth, platform_bitmap->GetBitmap().width()); 413 EXPECT_EQ(kHeight, platform_bitmap->GetBitmap().height()); 414 EXPECT_LE(static_cast<size_t>(platform_bitmap->GetBitmap().width()*4), 415 platform_bitmap->GetBitmap().rowBytes()); 416 EXPECT_EQ(SkBitmap::kARGB_8888_Config, // Same for all platforms. 417 platform_bitmap->GetBitmap().config()); 418 EXPECT_TRUE(platform_bitmap->GetBitmap().lockPixelsAreWritable()); 419 EXPECT_TRUE(platform_bitmap->GetBitmap().pixelRef()->isLocked()); 420 EXPECT_EQ(1, platform_bitmap->GetBitmap().pixelRef()->getRefCnt()); 421 422 *(platform_bitmap->GetBitmap().getAddr32(10, 20)) = 0xDEED1020; 423 *(platform_bitmap->GetBitmap().getAddr32(20, 30)) = 0xDEED2030; 424 425 SkBitmap sk_bitmap = platform_bitmap->GetBitmap(); 426 sk_bitmap.lockPixels(); 427 428 EXPECT_EQ(2, platform_bitmap->GetBitmap().pixelRef()->getRefCnt()); 429 EXPECT_EQ(2, sk_bitmap.pixelRef()->getRefCnt()); 430 431 EXPECT_EQ(0xDEED1020, *sk_bitmap.getAddr32(10, 20)); 432 EXPECT_EQ(0xDEED2030, *sk_bitmap.getAddr32(20, 30)); 433 434 *(platform_bitmap->GetBitmap().getAddr32(30, 40)) = 0xDEED3040; 435 436 // The SkBitmaps derived from a PlatformBitmap must be capable of outliving 437 // the PlatformBitmap. 438 platform_bitmap.reset(); 439 440 EXPECT_EQ(1, sk_bitmap.pixelRef()->getRefCnt()); 441 442 EXPECT_EQ(0xDEED1020, *sk_bitmap.getAddr32(10, 20)); 443 EXPECT_EQ(0xDEED2030, *sk_bitmap.getAddr32(20, 30)); 444 EXPECT_EQ(0xDEED3040, *sk_bitmap.getAddr32(30, 40)); 445 sk_bitmap.unlockPixels(); 446 447 EXPECT_EQ(NULL, sk_bitmap.getPixels()); 448 449 sk_bitmap.lockPixels(); 450 EXPECT_EQ(0xDEED1020, *sk_bitmap.getAddr32(10, 20)); 451 EXPECT_EQ(0xDEED2030, *sk_bitmap.getAddr32(20, 30)); 452 EXPECT_EQ(0xDEED3040, *sk_bitmap.getAddr32(30, 40)); 453 sk_bitmap.unlockPixels(); 454 } 455 456 457 } // namespace skia 458
