src/ui/gfx/image/image_unittest.cc

   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 #include "testing/gtest/include/gtest/gtest.h"
   6 #include "third_party/skia/include/core/SkCanvas.h"
   7 #include "third_party/skia/include/core/SkPaint.h"
   8 #include "ui/gfx/image/image.h"
   9 #include "ui/gfx/image/image_png_rep.h"
  10 #include "ui/gfx/image/image_skia.h"
  11 #include "ui/gfx/image/image_unittest_util.h"
  12
  13 #if defined(OS_IOS)
  14 #include "base/mac/foundation_util.h"
  15 #include "skia/ext/skia_utils_ios.h"
  16 #elif defined(OS_MACOSX)
  17 #include "base/mac/mac_util.h"
  18 #include "skia/ext/skia_utils_mac.h"
  19 #endif
  20
  21 namespace {
  22
  23 #if defined(OS_IOS) || defined(OS_MACOSX)
  24 const bool kUsesSkiaNatively = false;
  25 #else
  26 const bool kUsesSkiaNatively = true;
  27 #endif
  28
  29 class ImageTest : public testing::Test {
  30  public:
  31   ImageTest() {
  32     std::vector<float> scales;
  33     scales.push_back(1.0f);
  34 #if !defined(OS_IOS)
  35     scales.push_back(2.0f);
  36 #endif
  37     gfx::ImageSkia::SetSupportedScales(scales);
  38   }
  39 };
  40
  41 namespace gt = gfx::test;
  42
  43 TEST_F(ImageTest, EmptyImage) {
  44   // Test the default constructor.
  45   gfx::Image image;
  46   EXPECT_EQ(0U, image.RepresentationCount());
  47   EXPECT_TRUE(image.IsEmpty());
  48   EXPECT_EQ(0, image.Width());
  49   EXPECT_EQ(0, image.Height());
  50
  51   // Test the copy constructor.
  52   gfx::Image imageCopy(image);
  53   EXPECT_TRUE(imageCopy.IsEmpty());
  54   EXPECT_EQ(0, imageCopy.Width());
  55   EXPECT_EQ(0, imageCopy.Height());
  56
  57   // Test calling SwapRepresentations() with an empty image.
  58   gfx::Image image2(gt::CreateImageSkia(25, 25));
  59   EXPECT_FALSE(image2.IsEmpty());
  60   EXPECT_EQ(25, image2.Width());
  61   EXPECT_EQ(25, image2.Height());
  62
  63   image.SwapRepresentations(&image2);
  64   EXPECT_FALSE(image.IsEmpty());
  65   EXPECT_EQ(25, image.Width());
  66   EXPECT_EQ(25, image.Height());
  67   EXPECT_TRUE(image2.IsEmpty());
  68   EXPECT_EQ(0, image2.Width());
  69   EXPECT_EQ(0, image2.Height());
  70 }
  71
  72 // Test constructing a gfx::Image from an empty PlatformImage.
  73 TEST_F(ImageTest, EmptyImageFromEmptyPlatformImage) {
  74 #if defined(OS_IOS) || defined(OS_MACOSX)
  75   gfx::Image image1(NULL);
  76   EXPECT_TRUE(image1.IsEmpty());
  77   EXPECT_EQ(0, image1.Width());
  78   EXPECT_EQ(0, image1.Height());
  79   EXPECT_EQ(0U, image1.RepresentationCount());
  80 #endif
  81
  82   // gfx::ImageSkia and gfx::ImagePNGRep are available on all platforms.
  83   gfx::ImageSkia image_skia;
  84   EXPECT_TRUE(image_skia.isNull());
  85   gfx::Image image2(image_skia);
  86   EXPECT_TRUE(image2.IsEmpty());
  87   EXPECT_EQ(0, image2.Width());
  88   EXPECT_EQ(0, image2.Height());
  89   EXPECT_EQ(0U, image2.RepresentationCount());
  90
  91   std::vector<gfx::ImagePNGRep> image_png_reps;
  92   gfx::Image image3(image_png_reps);
  93   EXPECT_TRUE(image3.IsEmpty());
  94   EXPECT_EQ(0, image3.Width());
  95   EXPECT_EQ(0, image3.Height());
  96   EXPECT_EQ(0U, image3.RepresentationCount());
  97 }
  98
  99 // The resulting Image should be empty when it is created using obviously
 100 // invalid data.
 101 TEST_F(ImageTest, EmptyImageFromObviouslyInvalidPNGImage) {
 102   std::vector<gfx::ImagePNGRep> image_png_reps1;
 103   image_png_reps1.push_back(gfx::ImagePNGRep(NULL, 1.0f));
 104   gfx::Image image1(image_png_reps1);
 105   EXPECT_TRUE(image1.IsEmpty());
 106   EXPECT_EQ(0U, image1.RepresentationCount());
 107
 108   std::vector<gfx::ImagePNGRep> image_png_reps2;
 109   image_png_reps2.push_back(gfx::ImagePNGRep(
 110       new base::RefCountedBytes(), 1.0f));
 111   gfx::Image image2(image_png_reps2);
 112   EXPECT_TRUE(image2.IsEmpty());
 113   EXPECT_EQ(0U, image2.RepresentationCount());
 114 }
 115
 116 // Test the Width, Height and Size of an empty and non-empty image.
 117 TEST_F(ImageTest, ImageSize) {
 118   gfx::Image image;
 119   EXPECT_EQ(0, image.Width());
 120   EXPECT_EQ(0, image.Height());
 121   EXPECT_EQ(gfx::Size(0, 0), image.Size());
 122
 123   gfx::Image image2(gt::CreateImageSkia(10, 25));
 124   EXPECT_EQ(10, image2.Width());
 125   EXPECT_EQ(25, image2.Height());
 126   EXPECT_EQ(gfx::Size(10, 25), image2.Size());
 127 }
 128
 129 TEST_F(ImageTest, SkiaToSkia) {
 130   gfx::Image image(gt::CreateImageSkia(25, 25));
 131   EXPECT_EQ(25, image.Width());
 132   EXPECT_EQ(25, image.Height());
 133
 134   // Test ToImageSkia().
 135   const gfx::ImageSkia* image_skia1 = image.ToImageSkia();
 136   EXPECT_TRUE(image_skia1);
 137   EXPECT_FALSE(image_skia1->isNull());
 138   EXPECT_EQ(1U, image.RepresentationCount());
 139
 140   // Make sure double conversion doesn't happen.
 141   const gfx::ImageSkia* image_skia2 = image.ToImageSkia();
 142   EXPECT_EQ(1U, image.RepresentationCount());
 143
 144   // ToImageSkia() should always return the same gfx::ImageSkia.
 145   EXPECT_EQ(image_skia1, image_skia2);
 146
 147   // Test ToSkBitmap().
 148   const SkBitmap* bitmap1 = image.ToSkBitmap();
 149   const SkBitmap* bitmap2 = image.ToSkBitmap();
 150   EXPECT_TRUE(bitmap1);
 151   EXPECT_FALSE(bitmap1->isNull());
 152   EXPECT_EQ(bitmap1, bitmap2);
 153
 154   EXPECT_EQ(1U, image.RepresentationCount());
 155   EXPECT_TRUE(image.HasRepresentation(gfx::Image::kImageRepSkia));
 156   if (!kUsesSkiaNatively)
 157     EXPECT_FALSE(image.HasRepresentation(gt::GetPlatformRepresentationType()));
 158 }
 159
 160 TEST_F(ImageTest, EmptyImageToPNG) {
 161   gfx::Image image;
 162   scoped_refptr<base::RefCountedMemory> png_bytes = image.As1xPNGBytes();
 163   EXPECT_TRUE(png_bytes.get());
 164   EXPECT_FALSE(png_bytes->size());
 165 }
 166
 167 // Check that getting the 1x PNG bytes from images which do not have a 1x
 168 // representation returns NULL.
 169 TEST_F(ImageTest, ImageNo1xToPNG) {
 170   // Image with 2x only.
 171   const int kSize2x = 50;
 172   gfx::ImageSkia image_skia;
 173   image_skia.AddRepresentation(gfx::ImageSkiaRep(gt::CreateBitmap(
 174       kSize2x, kSize2x), 2.0f));
 175   gfx::Image image1(image_skia);
 176   scoped_refptr<base::RefCountedMemory> png_bytes1 = image1.As1xPNGBytes();
 177   EXPECT_TRUE(png_bytes1.get());
 178   EXPECT_FALSE(png_bytes1->size());
 179
 180   std::vector<gfx::ImagePNGRep> image_png_reps;
 181   image_png_reps.push_back(gfx::ImagePNGRep(
 182       gt::CreatePNGBytes(kSize2x), 2.0f));
 183   gfx::Image image2(image_png_reps);
 184   EXPECT_FALSE(image2.IsEmpty());
 185   EXPECT_EQ(0, image2.Width());
 186   EXPECT_EQ(0, image2.Height());
 187   scoped_refptr<base::RefCountedMemory> png_bytes2 = image2.As1xPNGBytes();
 188   EXPECT_TRUE(png_bytes2.get());
 189   EXPECT_FALSE(png_bytes2->size());
 190 }
 191
 192 // Check that for an image initialized with multi resolution PNG data,
 193 // As1xPNGBytes() returns the 1x bytes.
 194 TEST_F(ImageTest, CreateExtractPNGBytes) {
 195   const int kSize1x = 25;
 196   const int kSize2x = 50;
 197
 198   scoped_refptr<base::RefCountedMemory> bytes1x = gt::CreatePNGBytes(kSize1x);
 199   std::vector<gfx::ImagePNGRep> image_png_reps;
 200   image_png_reps.push_back(gfx::ImagePNGRep(bytes1x, 1.0f));
 201   image_png_reps.push_back(gfx::ImagePNGRep(
 202       gt::CreatePNGBytes(kSize2x), 2.0f));
 203
 204   gfx::Image image(image_png_reps);
 205   EXPECT_FALSE(image.IsEmpty());
 206   EXPECT_EQ(25, image.Width());
 207   EXPECT_EQ(25, image.Height());
 208
 209   EXPECT_TRUE(std::equal(bytes1x->front(), bytes1x->front() + bytes1x->size(),
 210                          image.As1xPNGBytes()->front()));
 211 }
 212
 213 TEST_F(ImageTest, MultiResolutionImageSkiaToPNG) {
 214   const int kSize1x = 25;
 215   const int kSize2x = 50;
 216
 217   SkBitmap bitmap_1x = gt::CreateBitmap(kSize1x, kSize1x);
 218   gfx::ImageSkia image_skia;
 219   image_skia.AddRepresentation(gfx::ImageSkiaRep(bitmap_1x,
 220                                                  1.0f));
 221   image_skia.AddRepresentation(gfx::ImageSkiaRep(gt::CreateBitmap(
 222       kSize2x, kSize2x), 2.0f));
 223   gfx::Image image(image_skia);
 224
 225   EXPECT_TRUE(gt::IsEqual(image.As1xPNGBytes(), bitmap_1x));
 226   EXPECT_TRUE(image.HasRepresentation(gfx::Image::kImageRepPNG));
 227 }
 228
 229 TEST_F(ImageTest, MultiResolutionPNGToImageSkia) {
 230   const int kSize1x = 25;
 231   const int kSize2x = 50;
 232
 233   scoped_refptr<base::RefCountedMemory> bytes1x = gt::CreatePNGBytes(kSize1x);
 234   scoped_refptr<base::RefCountedMemory> bytes2x = gt::CreatePNGBytes(kSize2x);
 235
 236   std::vector<gfx::ImagePNGRep> image_png_reps;
 237   image_png_reps.push_back(gfx::ImagePNGRep(bytes1x, 1.0f));
 238   image_png_reps.push_back(gfx::ImagePNGRep(bytes2x, 2.0f));
 239   gfx::Image image(image_png_reps);
 240
 241   std::vector<float> scales;
 242   scales.push_back(1.0f);
 243   scales.push_back(2.0f);
 244   gfx::ImageSkia image_skia = image.AsImageSkia();
 245   EXPECT_TRUE(gt::IsEqual(bytes1x,
 246       image_skia.GetRepresentation(1.0f).sk_bitmap()));
 247   EXPECT_TRUE(gt::IsEqual(bytes2x,
 248       image_skia.GetRepresentation(2.0f).sk_bitmap()));
 249   EXPECT_TRUE(gt::ImageSkiaStructureMatches(image_skia, kSize1x, kSize1x,
 250                                             scales));
 251 #if !defined(OS_IOS)
 252   // IOS does not support arbitrary scale factors.
 253   gfx::ImageSkiaRep rep_1_6x = image_skia.GetRepresentation(1.6f);
 254   ASSERT_FALSE(rep_1_6x.is_null());
 255   ASSERT_EQ(1.6f, rep_1_6x.scale());
 256   EXPECT_EQ("40x40", rep_1_6x.pixel_size().ToString());
 257
 258   gfx::ImageSkiaRep rep_0_8x = image_skia.GetRepresentation(0.8f);
 259   ASSERT_FALSE(rep_0_8x.is_null());
 260   ASSERT_EQ(0.8f, rep_0_8x.scale());
 261   EXPECT_EQ("20x20", rep_0_8x.pixel_size().ToString());
 262 #endif
 263 }
 264
 265 TEST_F(ImageTest, MultiResolutionPNGToPlatform) {
 266   const int kSize1x = 25;
 267   const int kSize2x = 50;
 268
 269   scoped_refptr<base::RefCountedMemory> bytes1x = gt::CreatePNGBytes(kSize1x);
 270   scoped_refptr<base::RefCountedMemory> bytes2x = gt::CreatePNGBytes(kSize2x);
 271   std::vector<gfx::ImagePNGRep> image_png_reps;
 272   image_png_reps.push_back(gfx::ImagePNGRep(bytes1x, 1.0f));
 273   image_png_reps.push_back(gfx::ImagePNGRep(bytes2x, 2.0f));
 274
 275   gfx::Image from_png(image_png_reps);
 276   gfx::Image from_platform(gt::CopyPlatformType(from_png));
 277 #if defined(OS_IOS)
 278   // On iOS the platform type (UIImage) only supports one resolution.
 279   std::vector<float> scales = gfx::ImageSkia::GetSupportedScales();
 280   EXPECT_EQ(scales.size(), 1U);
 281   if (scales[0] == 1.0f)
 282     EXPECT_TRUE(gt::IsEqual(bytes1x, from_platform.AsBitmap()));
 283   else if (scales[0] == 2.0f)
 284     EXPECT_TRUE(gt::IsEqual(bytes2x, from_platform.AsBitmap()));
 285   else
 286     ADD_FAILURE() << "Unexpected platform scale factor.";
 287 #else
 288   EXPECT_TRUE(gt::IsEqual(bytes1x, from_platform.AsBitmap()));
 289 #endif  // defined(OS_IOS)
 290 }
 291
 292
 293 TEST_F(ImageTest, PlatformToPNGEncodeAndDecode) {
 294   gfx::Image image(gt::CreatePlatformImage());
 295   scoped_refptr<base::RefCountedMemory> png_data = image.As1xPNGBytes();
 296   EXPECT_TRUE(png_data.get());
 297   EXPECT_TRUE(png_data->size());
 298   EXPECT_TRUE(image.HasRepresentation(gfx::Image::kImageRepPNG));
 299
 300   std::vector<gfx::ImagePNGRep> image_png_reps;
 301   image_png_reps.push_back(gfx::ImagePNGRep(png_data, 1.0f));
 302   gfx::Image from_png(image_png_reps);
 303
 304   EXPECT_TRUE(from_png.HasRepresentation(gfx::Image::kImageRepPNG));
 305   EXPECT_TRUE(gt::IsPlatformImageValid(gt::ToPlatformType(from_png)));
 306 }
 307
 308 // The platform types use the platform provided encoding/decoding of PNGs. Make
 309 // sure these work with the Skia Encode/Decode.
 310 TEST_F(ImageTest, PNGEncodeFromSkiaDecodeToPlatform) {
 311   // Force the conversion sequence skia to png to platform_type.
 312   gfx::Image from_bitmap = gfx::Image::CreateFrom1xBitmap(
 313       gt::CreateBitmap(25, 25));
 314   scoped_refptr<base::RefCountedMemory> png_bytes =
 315       from_bitmap.As1xPNGBytes();
 316
 317   std::vector<gfx::ImagePNGRep> image_png_reps;
 318   image_png_reps.push_back(gfx::ImagePNGRep(png_bytes, 1.0f));
 319   gfx::Image from_png(image_png_reps);
 320
 321   gfx::Image from_platform(gt::CopyPlatformType(from_png));
 322
 323   EXPECT_TRUE(gt::IsPlatformImageValid(gt::ToPlatformType(from_platform)));
 324   EXPECT_TRUE(gt::IsEqual(png_bytes, from_platform.AsBitmap()));
 325 }
 326
 327 TEST_F(ImageTest, PNGEncodeFromPlatformDecodeToSkia) {
 328   // Force the conversion sequence platform_type to png to skia.
 329   gfx::Image from_platform(gt::CreatePlatformImage());
 330   scoped_refptr<base::RefCountedMemory> png_bytes =
 331       from_platform.As1xPNGBytes();
 332   std::vector<gfx::ImagePNGRep> image_png_reps;
 333   image_png_reps.push_back(gfx::ImagePNGRep(png_bytes, 1.0f));
 334   gfx::Image from_png(image_png_reps);
 335
 336   EXPECT_TRUE(gt::IsEqual(from_platform.AsBitmap(), from_png.AsBitmap()));
 337 }
 338
 339 TEST_F(ImageTest, PNGDecodeToSkiaFailure) {
 340   scoped_refptr<base::RefCountedBytes> invalid_bytes(
 341       new base::RefCountedBytes());
 342   invalid_bytes->data().push_back('0');
 343   std::vector<gfx::ImagePNGRep> image_png_reps;
 344   image_png_reps.push_back(gfx::ImagePNGRep(
 345       invalid_bytes, 1.0f));
 346   gfx::Image image(image_png_reps);
 347   gt::CheckImageIndicatesPNGDecodeFailure(image);
 348 }
 349
 350 TEST_F(ImageTest, PNGDecodeToPlatformFailure) {
 351   scoped_refptr<base::RefCountedBytes> invalid_bytes(
 352       new base::RefCountedBytes());
 353   invalid_bytes->data().push_back('0');
 354   std::vector<gfx::ImagePNGRep> image_png_reps;
 355   image_png_reps.push_back(gfx::ImagePNGRep(
 356       invalid_bytes, 1.0f));
 357   gfx::Image from_png(image_png_reps);
 358   gfx::Image from_platform(gt::CopyPlatformType(from_png));
 359   gt::CheckImageIndicatesPNGDecodeFailure(from_platform);
 360 }
 361
 362 TEST_F(ImageTest, SkiaToPlatform) {
 363   gfx::Image image(gt::CreateImageSkia(25, 25));
 364   EXPECT_EQ(25, image.Width());
 365   EXPECT_EQ(25, image.Height());
 366   const size_t kRepCount = kUsesSkiaNatively ? 1U : 2U;
 367
 368   EXPECT_TRUE(image.HasRepresentation(gfx::Image::kImageRepSkia));
 369   if (!kUsesSkiaNatively)
 370     EXPECT_FALSE(image.HasRepresentation(gt::GetPlatformRepresentationType()));
 371
 372   EXPECT_TRUE(gt::IsPlatformImageValid(gt::ToPlatformType(image)));
 373   EXPECT_EQ(kRepCount, image.RepresentationCount());
 374
 375   const SkBitmap* bitmap = image.ToSkBitmap();
 376   EXPECT_FALSE(bitmap->isNull());
 377   EXPECT_EQ(kRepCount, image.RepresentationCount());
 378
 379   EXPECT_TRUE(image.HasRepresentation(gfx::Image::kImageRepSkia));
 380   EXPECT_TRUE(image.HasRepresentation(gt::GetPlatformRepresentationType()));
 381   EXPECT_EQ(25, image.Width());
 382   EXPECT_EQ(25, image.Height());
 383 }
 384
 385 TEST_F(ImageTest, PlatformToSkia) {
 386   gfx::Image image(gt::CreatePlatformImage());
 387   EXPECT_EQ(25, image.Width());
 388   EXPECT_EQ(25, image.Height());
 389   const size_t kRepCount = kUsesSkiaNatively ? 1U : 2U;
 390
 391   EXPECT_TRUE(image.HasRepresentation(gt::GetPlatformRepresentationType()));
 392   if (!kUsesSkiaNatively)
 393     EXPECT_FALSE(image.HasRepresentation(gfx::Image::kImageRepSkia));
 394
 395   const SkBitmap* bitmap = image.ToSkBitmap();
 396   EXPECT_TRUE(bitmap);
 397   EXPECT_FALSE(bitmap->isNull());
 398   EXPECT_EQ(kRepCount, image.RepresentationCount());
 399
 400   EXPECT_TRUE(gt::IsPlatformImageValid(gt::ToPlatformType(image)));
 401   EXPECT_EQ(kRepCount, image.RepresentationCount());
 402
 403   EXPECT_TRUE(image.HasRepresentation(gfx::Image::kImageRepSkia));
 404   EXPECT_EQ(25, image.Width());
 405   EXPECT_EQ(25, image.Height());
 406 }
 407
 408 TEST_F(ImageTest, PlatformToPlatform) {
 409   gfx::Image image(gt::CreatePlatformImage());
 410   EXPECT_EQ(25, image.Width());
 411   EXPECT_EQ(25, image.Height());
 412   EXPECT_TRUE(gt::IsPlatformImageValid(gt::ToPlatformType(image)));
 413   EXPECT_EQ(1U, image.RepresentationCount());
 414
 415   // Make sure double conversion doesn't happen.
 416   EXPECT_TRUE(gt::IsPlatformImageValid(gt::ToPlatformType(image)));
 417   EXPECT_EQ(1U, image.RepresentationCount());
 418
 419   EXPECT_TRUE(image.HasRepresentation(gt::GetPlatformRepresentationType()));
 420   if (!kUsesSkiaNatively)
 421     EXPECT_FALSE(image.HasRepresentation(gfx::Image::kImageRepSkia));
 422   EXPECT_EQ(25, image.Width());
 423   EXPECT_EQ(25, image.Height());
 424 }
 425
 426 TEST_F(ImageTest, PlatformToSkiaToCopy) {
 427   const gfx::ImageSkia* image_skia = NULL;
 428   {
 429     gfx::Image image(gt::CreatePlatformImage());
 430     image_skia = image.CopyImageSkia();
 431   }
 432   EXPECT_TRUE(image_skia);
 433   EXPECT_FALSE(image_skia->isNull());
 434   delete image_skia;
 435
 436   const SkBitmap* bitmap = NULL;
 437   {
 438     gfx::Image image(gt::CreatePlatformImage());
 439     bitmap = image.CopySkBitmap();
 440   }
 441
 442   EXPECT_TRUE(bitmap);
 443   EXPECT_FALSE(bitmap->isNull());
 444   delete bitmap;
 445 }
 446
 447 #if defined(OS_IOS)
 448 TEST_F(ImageTest, SkiaToCocoaTouchCopy) {
 449   UIImage* ui_image;
 450
 451   {
 452     gfx::Image image(gt::CreateImageSkia(25, 25));
 453     ui_image = image.CopyUIImage();
 454   }
 455
 456   EXPECT_TRUE(ui_image);
 457   base::mac::NSObjectRelease(ui_image);
 458 }
 459 #elif defined(OS_MACOSX)
 460 TEST_F(ImageTest, SkiaToCocoaCopy) {
 461   NSImage* ns_image;
 462
 463   {
 464     gfx::Image image(gt::CreateImageSkia(25, 25));
 465     ns_image = image.CopyNSImage();
 466   }
 467
 468   EXPECT_TRUE(ns_image);
 469   base::mac::NSObjectRelease(ns_image);
 470 }
 471 #endif
 472
 473 TEST_F(ImageTest, CheckSkiaColor) {
 474   gfx::Image image(gt::CreatePlatformImage());
 475
 476   const SkBitmap* bitmap = image.ToSkBitmap();
 477   SkAutoLockPixels auto_lock(*bitmap);
 478   gt::CheckColors(bitmap->getColor(10, 10), SK_ColorGREEN);
 479 }
 480
 481 TEST_F(ImageTest, SkBitmapConversionPreservesOrientation) {
 482   const int width = 50;
 483   const int height = 50;
 484   SkBitmap bitmap;
 485   bitmap.allocN32Pixels(width, height);
 486   bitmap.eraseARGB(255, 0, 255, 0);
 487
 488   // Paint the upper half of the image in red (lower half is in green).
 489   SkCanvas canvas(bitmap);
 490   SkPaint red;
 491   red.setColor(SK_ColorRED);
 492   canvas.drawRect(SkRect::MakeWH(width, height / 2), red);
 493   {
 494     SCOPED_TRACE("Checking color of the initial SkBitmap");
 495     gt::CheckColors(bitmap.getColor(10, 10), SK_ColorRED);
 496     gt::CheckColors(bitmap.getColor(10, 40), SK_ColorGREEN);
 497   }
 498
 499   // Convert from SkBitmap to a platform representation, then check the upper
 500   // half of the platform image to make sure it is red, not green.
 501   gfx::Image from_skbitmap = gfx::Image::CreateFrom1xBitmap(bitmap);
 502   {
 503     SCOPED_TRACE("Checking color of the platform image");
 504     gt::CheckColors(
 505         gt::GetPlatformImageColor(gt::ToPlatformType(from_skbitmap), 10, 10),
 506         SK_ColorRED);
 507     gt::CheckColors(
 508         gt::GetPlatformImageColor(gt::ToPlatformType(from_skbitmap), 10, 40),
 509         SK_ColorGREEN);
 510   }
 511
 512   // Force a conversion back to SkBitmap and check that the upper half is red.
 513   gfx::Image from_platform(gt::CopyPlatformType(from_skbitmap));
 514   const SkBitmap* bitmap2 = from_platform.ToSkBitmap();
 515   SkAutoLockPixels auto_lock(*bitmap2);
 516   {
 517     SCOPED_TRACE("Checking color after conversion back to SkBitmap");
 518     gt::CheckColors(bitmap2->getColor(10, 10), SK_ColorRED);
 519     gt::CheckColors(bitmap2->getColor(10, 40), SK_ColorGREEN);
 520   }
 521 }
 522
 523 TEST_F(ImageTest, SkBitmapConversionPreservesTransparency) {
 524   const int width = 50;
 525   const int height = 50;
 526   SkBitmap bitmap;
 527   bitmap.allocN32Pixels(width, height);
 528   bitmap.eraseARGB(0, 0, 255, 0);
 529
 530   // Paint the upper half of the image in red (lower half is transparent).
 531   SkCanvas canvas(bitmap);
 532   SkPaint red;
 533   red.setColor(SK_ColorRED);
 534   canvas.drawRect(SkRect::MakeWH(width, height / 2), red);
 535   {
 536     SCOPED_TRACE("Checking color of the initial SkBitmap");
 537     gt::CheckColors(bitmap.getColor(10, 10), SK_ColorRED);
 538     gt::CheckIsTransparent(bitmap.getColor(10, 40));
 539   }
 540
 541   // Convert from SkBitmap to a platform representation, then check the upper
 542   // half of the platform image to make sure it is red, not green.
 543   gfx::Image from_skbitmap = gfx::Image::CreateFrom1xBitmap(bitmap);
 544   {
 545     SCOPED_TRACE("Checking color of the platform image");
 546     gt::CheckColors(
 547         gt::GetPlatformImageColor(gt::ToPlatformType(from_skbitmap), 10, 10),
 548         SK_ColorRED);
 549     gt::CheckIsTransparent(
 550         gt::GetPlatformImageColor(gt::ToPlatformType(from_skbitmap), 10, 40));
 551   }
 552
 553   // Force a conversion back to SkBitmap and check that the upper half is red.
 554   gfx::Image from_platform(gt::CopyPlatformType(from_skbitmap));
 555   const SkBitmap* bitmap2 = from_platform.ToSkBitmap();
 556   SkAutoLockPixels auto_lock(*bitmap2);
 557   {
 558     SCOPED_TRACE("Checking color after conversion back to SkBitmap");
 559     gt::CheckColors(bitmap2->getColor(10, 10), SK_ColorRED);
 560     gt::CheckIsTransparent(bitmap.getColor(10, 40));
 561   }
 562 }
 563
 564 TEST_F(ImageTest, SwapRepresentations) {
 565   const size_t kRepCount = kUsesSkiaNatively ? 1U : 2U;
 566
 567   gfx::Image image1(gt::CreateImageSkia(25, 25));
 568   const gfx::ImageSkia* image_skia1 = image1.ToImageSkia();
 569   EXPECT_EQ(1U, image1.RepresentationCount());
 570
 571   gfx::Image image2(gt::CreatePlatformImage());
 572   const gfx::ImageSkia* image_skia2 = image2.ToImageSkia();
 573   gt::PlatformImage platform_image = gt::ToPlatformType(image2);
 574   EXPECT_EQ(kRepCount, image2.RepresentationCount());
 575
 576   image1.SwapRepresentations(&image2);
 577
 578   EXPECT_EQ(image_skia2, image1.ToImageSkia());
 579   EXPECT_TRUE(gt::PlatformImagesEqual(platform_image,
 580                                       gt::ToPlatformType(image1)));
 581   EXPECT_EQ(image_skia1, image2.ToImageSkia());
 582   EXPECT_EQ(kRepCount, image1.RepresentationCount());
 583   EXPECT_EQ(1U, image2.RepresentationCount());
 584 }
 585
 586 TEST_F(ImageTest, Copy) {
 587   const size_t kRepCount = kUsesSkiaNatively ? 1U : 2U;
 588
 589   gfx::Image image1(gt::CreateImageSkia(25, 25));
 590   EXPECT_EQ(25, image1.Width());
 591   EXPECT_EQ(25, image1.Height());
 592   gfx::Image image2(image1);
 593   EXPECT_EQ(25, image2.Width());
 594   EXPECT_EQ(25, image2.Height());
 595
 596   EXPECT_EQ(1U, image1.RepresentationCount());
 597   EXPECT_EQ(1U, image2.RepresentationCount());
 598   EXPECT_EQ(image1.ToImageSkia(), image2.ToImageSkia());
 599
 600   EXPECT_TRUE(gt::IsPlatformImageValid(gt::ToPlatformType(image2)));
 601   EXPECT_EQ(kRepCount, image2.RepresentationCount());
 602   EXPECT_EQ(kRepCount, image1.RepresentationCount());
 603 }
 604
 605 TEST_F(ImageTest, Assign) {
 606   gfx::Image image1(gt::CreatePlatformImage());
 607   EXPECT_EQ(25, image1.Width());
 608   EXPECT_EQ(25, image1.Height());
 609   // Assignment must be on a separate line to the declaration in order to test
 610   // assignment operator (instead of copy constructor).
 611   gfx::Image image2;
 612   image2 = image1;
 613   EXPECT_EQ(25, image2.Width());
 614   EXPECT_EQ(25, image2.Height());
 615
 616   EXPECT_EQ(1U, image1.RepresentationCount());
 617   EXPECT_EQ(1U, image2.RepresentationCount());
 618   EXPECT_EQ(image1.ToSkBitmap(), image2.ToSkBitmap());
 619 }
 620
 621 TEST_F(ImageTest, MultiResolutionImageSkia) {
 622   const int kWidth1x = 10;
 623   const int kHeight1x = 12;
 624   const int kWidth2x = 20;
 625   const int kHeight2x = 24;
 626
 627   gfx::ImageSkia image_skia;
 628   image_skia.AddRepresentation(gfx::ImageSkiaRep(
 629       gt::CreateBitmap(kWidth1x, kHeight1x),
 630       1.0f));
 631   image_skia.AddRepresentation(gfx::ImageSkiaRep(
 632       gt::CreateBitmap(kWidth2x, kHeight2x),
 633       2.0f));
 634
 635   std::vector<float> scales;
 636   scales.push_back(1.0f);
 637   scales.push_back(2.0f);
 638   EXPECT_TRUE(gt::ImageSkiaStructureMatches(image_skia, kWidth1x, kHeight1x,
 639                                             scales));
 640
 641   // Check that the image has a single representation.
 642   gfx::Image image(image_skia);
 643   EXPECT_EQ(1u, image.RepresentationCount());
 644   EXPECT_EQ(kWidth1x, image.Width());
 645   EXPECT_EQ(kHeight1x, image.Height());
 646 }
 647
 648 TEST_F(ImageTest, RemoveFromMultiResolutionImageSkia) {
 649   const int kWidth2x = 20;
 650   const int kHeight2x = 24;
 651
 652   gfx::ImageSkia image_skia;
 653
 654   image_skia.AddRepresentation(gfx::ImageSkiaRep(
 655       gt::CreateBitmap(kWidth2x, kHeight2x), 2.0f));
 656   EXPECT_EQ(1u, image_skia.image_reps().size());
 657
 658   image_skia.RemoveRepresentation(1.0f);
 659   EXPECT_EQ(1u, image_skia.image_reps().size());
 660
 661   image_skia.RemoveRepresentation(2.0f);
 662   EXPECT_EQ(0u, image_skia.image_reps().size());
 663 }
 664
 665 // Tests that gfx::Image does indeed take ownership of the SkBitmap it is
 666 // passed.
 667 TEST_F(ImageTest, OwnershipTest) {
 668   gfx::Image image;
 669   {
 670     SkBitmap bitmap(gt::CreateBitmap(10, 10));
 671     EXPECT_TRUE(!bitmap.isNull());
 672     image = gfx::Image(gfx::ImageSkia(
 673         gfx::ImageSkiaRep(bitmap, 1.0f)));
 674   }
 675   EXPECT_TRUE(!image.ToSkBitmap()->isNull());
 676 }
 677
 678 // Integration tests with UI toolkit frameworks require linking against the
 679 // Views library and cannot be here (ui_unittests doesn't include it). They
 680 // instead live in /chrome/browser/ui/tests/ui_gfx_image_unittest.cc.
 681
 682 }  // namespace