src/cc/output/filter_operations_unittest.cc

   1 // Copyright 2013 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 "cc/output/filter_operations.h"
   6 #include "skia/ext/refptr.h"
   7 #include "testing/gtest/include/gtest/gtest.h"
   8 #include "third_party/skia/include/effects/SkBlurImageFilter.h"
   9 #include "ui/gfx/point.h"
  10
  11 namespace cc {
  12 namespace {
  13
  14 TEST(FilterOperationsTest, GetOutsetsBlur) {
  15   FilterOperations ops;
  16   ops.Append(FilterOperation::CreateBlurFilter(20));
  17   int top, right, bottom, left;
  18   top = right = bottom = left = 0;
  19   ops.GetOutsets(&top, &right, &bottom, &left);
  20   EXPECT_EQ(57, top);
  21   EXPECT_EQ(57, right);
  22   EXPECT_EQ(57, bottom);
  23   EXPECT_EQ(57, left);
  24 }
  25
  26 TEST(FilterOperationsTest, GetOutsetsDropShadow) {
  27   FilterOperations ops;
  28   ops.Append(FilterOperation::CreateDropShadowFilter(gfx::Point(3, 8), 20, 0));
  29   int top, right, bottom, left;
  30   top = right = bottom = left = 0;
  31   ops.GetOutsets(&top, &right, &bottom, &left);
  32   EXPECT_EQ(49, top);
  33   EXPECT_EQ(60, right);
  34   EXPECT_EQ(65, bottom);
  35   EXPECT_EQ(54, left);
  36 }
  37
  38 #define SAVE_RESTORE_AMOUNT(filter_name, filter_type, a)                  \
  39   {                                                                       \
  40     FilterOperation op = FilterOperation::Create##filter_name##Filter(a); \
  41     EXPECT_EQ(FilterOperation::filter_type, op.type());                   \
  42     EXPECT_EQ(a, op.amount());                                            \
  43                                                                           \
  44     FilterOperation op2 = FilterOperation::CreateEmptyFilter();           \
  45     op2.set_type(FilterOperation::filter_type);                           \
  46                                                                           \
  47     EXPECT_NE(a, op2.amount());                                           \
  48                                                                           \
  49     op2.set_amount(a);                                                    \
  50                                                                           \
  51     EXPECT_EQ(FilterOperation::filter_type, op2.type());                  \
  52     EXPECT_EQ(a, op2.amount());                                           \
  53   }
  54
  55 #define SAVE_RESTORE_OFFSET_AMOUNT_COLOR(filter_name, filter_type, a, b, c) \
  56   {                                                                         \
  57     FilterOperation op =                                                    \
  58         FilterOperation::Create##filter_name##Filter(a, b, c);              \
  59     EXPECT_EQ(FilterOperation::filter_type, op.type());                     \
  60     EXPECT_EQ(a, op.drop_shadow_offset());                                  \
  61     EXPECT_EQ(b, op.amount());                                              \
  62     EXPECT_EQ(c, op.drop_shadow_color());                                   \
  63                                                                             \
  64     FilterOperation op2 = FilterOperation::CreateEmptyFilter();             \
  65     op2.set_type(FilterOperation::filter_type);                             \
  66                                                                             \
  67     EXPECT_NE(a, op2.drop_shadow_offset());                                 \
  68     EXPECT_NE(b, op2.amount());                                             \
  69     EXPECT_NE(c, op2.drop_shadow_color());                                  \
  70                                                                             \
  71     op2.set_drop_shadow_offset(a);                                          \
  72     op2.set_amount(b);                                                      \
  73     op2.set_drop_shadow_color(c);                                           \
  74                                                                             \
  75     EXPECT_EQ(FilterOperation::filter_type, op2.type());                    \
  76     EXPECT_EQ(a, op2.drop_shadow_offset());                                 \
  77     EXPECT_EQ(b, op2.amount());                                             \
  78     EXPECT_EQ(c, op2.drop_shadow_color());                                  \
  79   }
  80
  81 #define SAVE_RESTORE_MATRIX(filter_name, filter_type, a)                  \
  82   {                                                                       \
  83     FilterOperation op = FilterOperation::Create##filter_name##Filter(a); \
  84     EXPECT_EQ(FilterOperation::filter_type, op.type());                   \
  85     for (size_t i = 0; i < 20; ++i)                                       \
  86       EXPECT_EQ(a[i], op.matrix()[i]);                                    \
  87                                                                           \
  88     FilterOperation op2 = FilterOperation::CreateEmptyFilter();           \
  89     op2.set_type(FilterOperation::filter_type);                           \
  90                                                                           \
  91     for (size_t i = 0; i < 20; ++i)                                       \
  92       EXPECT_NE(a[i], op2.matrix()[i]);                                   \
  93                                                                           \
  94     op2.set_matrix(a);                                                    \
  95                                                                           \
  96     EXPECT_EQ(FilterOperation::filter_type, op2.type());                  \
  97     for (size_t i = 0; i < 20; ++i)                                       \
  98       EXPECT_EQ(a[i], op.matrix()[i]);                                    \
  99   }
 100
 101 #define SAVE_RESTORE_AMOUNT_INSET(filter_name, filter_type, a, b)            \
 102   {                                                                          \
 103     FilterOperation op = FilterOperation::Create##filter_name##Filter(a, b); \
 104     EXPECT_EQ(FilterOperation::filter_type, op.type());                      \
 105     EXPECT_EQ(a, op.amount());                                               \
 106     EXPECT_EQ(b, op.zoom_inset());                                           \
 107                                                                              \
 108     FilterOperation op2 = FilterOperation::CreateEmptyFilter();              \
 109     op2.set_type(FilterOperation::filter_type);                              \
 110                                                                              \
 111     EXPECT_NE(a, op2.amount());                                              \
 112     EXPECT_NE(b, op2.zoom_inset());                                          \
 113                                                                              \
 114     op2.set_amount(a);                                                       \
 115     op2.set_zoom_inset(b);                                                   \
 116                                                                              \
 117     EXPECT_EQ(FilterOperation::filter_type, op2.type());                     \
 118     EXPECT_EQ(a, op2.amount());                                              \
 119     EXPECT_EQ(b, op2.zoom_inset());                                          \
 120   }
 121
 122 TEST(FilterOperationsTest, SaveAndRestore) {
 123   SAVE_RESTORE_AMOUNT(Grayscale, GRAYSCALE, 0.6f);
 124   SAVE_RESTORE_AMOUNT(Sepia, SEPIA, 0.6f);
 125   SAVE_RESTORE_AMOUNT(Saturate, SATURATE, 0.6f);
 126   SAVE_RESTORE_AMOUNT(HueRotate, HUE_ROTATE, 0.6f);
 127   SAVE_RESTORE_AMOUNT(Invert, INVERT, 0.6f);
 128   SAVE_RESTORE_AMOUNT(Brightness, BRIGHTNESS, 0.6f);
 129   SAVE_RESTORE_AMOUNT(Contrast, CONTRAST, 0.6f);
 130   SAVE_RESTORE_AMOUNT(Opacity, OPACITY, 0.6f);
 131   SAVE_RESTORE_AMOUNT(Blur, BLUR, 0.6f);
 132   SAVE_RESTORE_AMOUNT(SaturatingBrightness, SATURATING_BRIGHTNESS, 0.6f);
 133   SAVE_RESTORE_OFFSET_AMOUNT_COLOR(
 134       DropShadow, DROP_SHADOW, gfx::Point(3, 4), 0.4f, 0xffffff00);
 135
 136   SkScalar matrix[20] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
 137                          17, 18, 19, 20};
 138   SAVE_RESTORE_MATRIX(ColorMatrix, COLOR_MATRIX, matrix);
 139
 140   SAVE_RESTORE_AMOUNT_INSET(Zoom, ZOOM, 0.5f, 32);
 141 }
 142
 143 TEST(FilterOperationsTest, BlendGrayscaleFilters) {
 144   FilterOperation from = FilterOperation::CreateGrayscaleFilter(0.25f);
 145   FilterOperation to = FilterOperation::CreateGrayscaleFilter(0.75f);
 146
 147   FilterOperation blended = FilterOperation::Blend(&from, &to, -0.75);
 148   FilterOperation expected = FilterOperation::CreateGrayscaleFilter(0.f);
 149   EXPECT_EQ(expected, blended);
 150
 151   blended = FilterOperation::Blend(&from, &to, 0.75);
 152   expected = FilterOperation::CreateGrayscaleFilter(0.625f);
 153   EXPECT_EQ(expected, blended);
 154
 155   blended = FilterOperation::Blend(&from, &to, 1.8);
 156   expected = FilterOperation::CreateGrayscaleFilter(1.f);
 157   EXPECT_EQ(expected, blended);
 158 }
 159
 160 TEST(FilterOperationsTest, BlendGrayscaleWithNull) {
 161   FilterOperation filter = FilterOperation::CreateGrayscaleFilter(1.f);
 162
 163   FilterOperation blended = FilterOperation::Blend(&filter, NULL, 0.25);
 164   FilterOperation expected = FilterOperation::CreateGrayscaleFilter(0.75f);
 165   EXPECT_EQ(expected, blended);
 166
 167   blended = FilterOperation::Blend(NULL, &filter, 0.25);
 168   expected = FilterOperation::CreateGrayscaleFilter(0.25f);
 169   EXPECT_EQ(expected, blended);
 170 }
 171
 172 TEST(FilterOperationsTest, BlendSepiaFilters) {
 173   FilterOperation from = FilterOperation::CreateSepiaFilter(0.25f);
 174   FilterOperation to = FilterOperation::CreateSepiaFilter(0.75f);
 175
 176   FilterOperation blended = FilterOperation::Blend(&from, &to, -0.75);
 177   FilterOperation expected = FilterOperation::CreateSepiaFilter(0.f);
 178   EXPECT_EQ(expected, blended);
 179
 180   blended = FilterOperation::Blend(&from, &to, 0.75);
 181   expected = FilterOperation::CreateSepiaFilter(0.625f);
 182   EXPECT_EQ(expected, blended);
 183
 184   blended = FilterOperation::Blend(&from, &to, 1.8);
 185   expected = FilterOperation::CreateSepiaFilter(1.f);
 186   EXPECT_EQ(expected, blended);
 187 }
 188
 189 TEST(FilterOperationsTest, BlendSepiaWithNull) {
 190   FilterOperation filter = FilterOperation::CreateSepiaFilter(1.f);
 191
 192   FilterOperation blended = FilterOperation::Blend(&filter, NULL, 0.25);
 193   FilterOperation expected = FilterOperation::CreateSepiaFilter(0.75f);
 194   EXPECT_EQ(expected, blended);
 195
 196   blended = FilterOperation::Blend(NULL, &filter, 0.25);
 197   expected = FilterOperation::CreateSepiaFilter(0.25f);
 198   EXPECT_EQ(expected, blended);
 199 }
 200
 201 TEST(FilterOperationsTest, BlendSaturateFilters) {
 202   FilterOperation from = FilterOperation::CreateSaturateFilter(0.25f);
 203   FilterOperation to = FilterOperation::CreateSaturateFilter(0.75f);
 204
 205   FilterOperation blended = FilterOperation::Blend(&from, &to, -0.75);
 206   FilterOperation expected = FilterOperation::CreateSaturateFilter(0.f);
 207   EXPECT_EQ(expected, blended);
 208
 209   blended = FilterOperation::Blend(&from, &to, 0.75);
 210   expected = FilterOperation::CreateSaturateFilter(0.625f);
 211   EXPECT_EQ(expected, blended);
 212
 213   blended = FilterOperation::Blend(&from, &to, 2.0);
 214   expected = FilterOperation::CreateSaturateFilter(1.25f);
 215   EXPECT_EQ(expected, blended);
 216 }
 217
 218 TEST(FilterOperationsTest, BlendSaturateWithNull) {
 219   FilterOperation filter = FilterOperation::CreateSaturateFilter(0.f);
 220
 221   FilterOperation blended = FilterOperation::Blend(&filter, NULL, 0.25);
 222   FilterOperation expected = FilterOperation::CreateSaturateFilter(0.25f);
 223   EXPECT_EQ(expected, blended);
 224
 225   blended = FilterOperation::Blend(NULL, &filter, 0.25);
 226   expected = FilterOperation::CreateSaturateFilter(0.75f);
 227   EXPECT_EQ(expected, blended);
 228 }
 229
 230 TEST(FilterOperationsTest, BlendHueRotateFilters) {
 231   FilterOperation from = FilterOperation::CreateHueRotateFilter(3.f);
 232   FilterOperation to = FilterOperation::CreateHueRotateFilter(7.f);
 233
 234   FilterOperation blended = FilterOperation::Blend(&from, &to, -0.75);
 235   FilterOperation expected = FilterOperation::CreateHueRotateFilter(0.f);
 236   EXPECT_EQ(expected, blended);
 237
 238   blended = FilterOperation::Blend(&from, &to, 0.75);
 239   expected = FilterOperation::CreateHueRotateFilter(6.f);
 240   EXPECT_EQ(expected, blended);
 241
 242   blended = FilterOperation::Blend(&from, &to, 1.5);
 243   expected = FilterOperation::CreateHueRotateFilter(9.f);
 244   EXPECT_EQ(expected, blended);
 245 }
 246
 247 TEST(FilterOperationsTest, BlendHueRotateWithNull) {
 248   FilterOperation filter = FilterOperation::CreateHueRotateFilter(1.f);
 249
 250   FilterOperation blended = FilterOperation::Blend(&filter, NULL, 0.25);
 251   FilterOperation expected = FilterOperation::CreateHueRotateFilter(0.75f);
 252   EXPECT_EQ(expected, blended);
 253
 254   blended = FilterOperation::Blend(NULL, &filter, 0.25);
 255   expected = FilterOperation::CreateHueRotateFilter(0.25f);
 256   EXPECT_EQ(expected, blended);
 257 }
 258
 259 TEST(FilterOperationsTest, BlendInvertFilters) {
 260   FilterOperation from = FilterOperation::CreateInvertFilter(0.25f);
 261   FilterOperation to = FilterOperation::CreateInvertFilter(0.75f);
 262
 263   FilterOperation blended = FilterOperation::Blend(&from, &to, -0.75);
 264   FilterOperation expected = FilterOperation::CreateInvertFilter(0.f);
 265   EXPECT_EQ(expected, blended);
 266
 267   blended = FilterOperation::Blend(&from, &to, 0.75);
 268   expected = FilterOperation::CreateInvertFilter(0.625f);
 269   EXPECT_EQ(expected, blended);
 270
 271   blended = FilterOperation::Blend(&from, &to, 1.8);
 272   expected = FilterOperation::CreateInvertFilter(1.f);
 273   EXPECT_EQ(expected, blended);
 274 }
 275
 276 TEST(FilterOperationsTest, BlendInvertWithNull) {
 277   FilterOperation filter = FilterOperation::CreateInvertFilter(1.f);
 278
 279   FilterOperation blended = FilterOperation::Blend(&filter, NULL, 0.25);
 280   FilterOperation expected = FilterOperation::CreateInvertFilter(0.75f);
 281   EXPECT_EQ(expected, blended);
 282
 283   blended = FilterOperation::Blend(NULL, &filter, 0.25);
 284   expected = FilterOperation::CreateInvertFilter(0.25f);
 285   EXPECT_EQ(expected, blended);
 286 }
 287
 288 TEST(FilterOperationsTest, BlendBrightnessFilters) {
 289   FilterOperation from = FilterOperation::CreateBrightnessFilter(3.f);
 290   FilterOperation to = FilterOperation::CreateBrightnessFilter(7.f);
 291
 292   FilterOperation blended = FilterOperation::Blend(&from, &to, -0.9);
 293   FilterOperation expected = FilterOperation::CreateBrightnessFilter(0.f);
 294   EXPECT_EQ(expected, blended);
 295
 296   blended = FilterOperation::Blend(&from, &to, 0.75);
 297   expected = FilterOperation::CreateBrightnessFilter(6.f);
 298   EXPECT_EQ(expected, blended);
 299
 300   blended = FilterOperation::Blend(&from, &to, 1.5);
 301   expected = FilterOperation::CreateBrightnessFilter(9.f);
 302   EXPECT_EQ(expected, blended);
 303 }
 304
 305 TEST(FilterOperationsTest, BlendBrightnessWithNull) {
 306   FilterOperation filter = FilterOperation::CreateBrightnessFilter(0.f);
 307
 308   FilterOperation blended = FilterOperation::Blend(&filter, NULL, 0.25);
 309   FilterOperation expected = FilterOperation::CreateBrightnessFilter(0.25f);
 310   EXPECT_EQ(expected, blended);
 311
 312   blended = FilterOperation::Blend(NULL, &filter, 0.25);
 313   expected = FilterOperation::CreateBrightnessFilter(0.75f);
 314   EXPECT_EQ(expected, blended);
 315 }
 316
 317 TEST(FilterOperationsTest, BlendContrastFilters) {
 318   FilterOperation from = FilterOperation::CreateContrastFilter(3.f);
 319   FilterOperation to = FilterOperation::CreateContrastFilter(7.f);
 320
 321   FilterOperation blended = FilterOperation::Blend(&from, &to, -0.9);
 322   FilterOperation expected = FilterOperation::CreateContrastFilter(0.f);
 323   EXPECT_EQ(expected, blended);
 324
 325   blended = FilterOperation::Blend(&from, &to, 0.75);
 326   expected = FilterOperation::CreateContrastFilter(6.f);
 327   EXPECT_EQ(expected, blended);
 328
 329   blended = FilterOperation::Blend(&from, &to, 1.5);
 330   expected = FilterOperation::CreateContrastFilter(9.f);
 331   EXPECT_EQ(expected, blended);
 332 }
 333
 334 TEST(FilterOperationsTest, BlendContrastWithNull) {
 335   FilterOperation filter = FilterOperation::CreateContrastFilter(0.f);
 336
 337   FilterOperation blended = FilterOperation::Blend(&filter, NULL, 0.25);
 338   FilterOperation expected = FilterOperation::CreateContrastFilter(0.25f);
 339   EXPECT_EQ(expected, blended);
 340
 341   blended = FilterOperation::Blend(NULL, &filter, 0.25);
 342   expected = FilterOperation::CreateContrastFilter(0.75f);
 343   EXPECT_EQ(expected, blended);
 344 }
 345
 346 TEST(FilterOperationsTest, BlendOpacityFilters) {
 347   FilterOperation from = FilterOperation::CreateOpacityFilter(0.25f);
 348   FilterOperation to = FilterOperation::CreateOpacityFilter(0.75f);
 349
 350   FilterOperation blended = FilterOperation::Blend(&from, &to, -0.75);
 351   FilterOperation expected = FilterOperation::CreateOpacityFilter(0.f);
 352   EXPECT_EQ(expected, blended);
 353
 354   blended = FilterOperation::Blend(&from, &to, 0.75);
 355   expected = FilterOperation::CreateOpacityFilter(0.625f);
 356   EXPECT_EQ(expected, blended);
 357
 358   blended = FilterOperation::Blend(&from, &to, 1.8);
 359   expected = FilterOperation::CreateOpacityFilter(1.f);
 360   EXPECT_EQ(expected, blended);
 361 }
 362
 363 TEST(FilterOperationsTest, BlendOpacityWithNull) {
 364   FilterOperation filter = FilterOperation::CreateOpacityFilter(0.f);
 365
 366   FilterOperation blended = FilterOperation::Blend(&filter, NULL, 0.25);
 367   FilterOperation expected = FilterOperation::CreateOpacityFilter(0.25f);
 368   EXPECT_EQ(expected, blended);
 369
 370   blended = FilterOperation::Blend(NULL, &filter, 0.25);
 371   expected = FilterOperation::CreateOpacityFilter(0.75f);
 372   EXPECT_EQ(expected, blended);
 373 }
 374
 375 TEST(FilterOperationsTest, BlendBlurFilters) {
 376   FilterOperation from = FilterOperation::CreateBlurFilter(3.f);
 377   FilterOperation to = FilterOperation::CreateBlurFilter(7.f);
 378
 379   FilterOperation blended = FilterOperation::Blend(&from, &to, -0.9);
 380   FilterOperation expected = FilterOperation::CreateBlurFilter(0.f);
 381   EXPECT_EQ(expected, blended);
 382
 383   blended = FilterOperation::Blend(&from, &to, 0.75);
 384   expected = FilterOperation::CreateBlurFilter(6.f);
 385   EXPECT_EQ(expected, blended);
 386
 387   blended = FilterOperation::Blend(&from, &to, 1.5);
 388   expected = FilterOperation::CreateBlurFilter(9.f);
 389   EXPECT_EQ(expected, blended);
 390 }
 391
 392 TEST(FilterOperationsTest, BlendBlurWithNull) {
 393   FilterOperation filter = FilterOperation::CreateBlurFilter(1.f);
 394
 395   FilterOperation blended = FilterOperation::Blend(&filter, NULL, 0.25);
 396   FilterOperation expected = FilterOperation::CreateBlurFilter(0.75f);
 397   EXPECT_EQ(expected, blended);
 398
 399   blended = FilterOperation::Blend(NULL, &filter, 0.25);
 400   expected = FilterOperation::CreateBlurFilter(0.25f);
 401   EXPECT_EQ(expected, blended);
 402 }
 403
 404 TEST(FilterOperationsTest, BlendDropShadowFilters) {
 405   FilterOperation from = FilterOperation::CreateDropShadowFilter(
 406       gfx::Point(0, 0), 2.f, SkColorSetARGB(15, 34, 68, 136));
 407   FilterOperation to = FilterOperation::CreateDropShadowFilter(
 408       gfx::Point(3, 5), 6.f, SkColorSetARGB(51, 30, 60, 120));
 409
 410   FilterOperation blended = FilterOperation::Blend(&from, &to, -0.75);
 411   FilterOperation expected = FilterOperation::CreateDropShadowFilter(
 412       gfx::Point(-2, -4), 0.f, SkColorSetARGB(0, 0, 0, 0));
 413   EXPECT_EQ(expected, blended);
 414
 415   blended = FilterOperation::Blend(&from, &to, 0.25);
 416   expected = FilterOperation::CreateDropShadowFilter(
 417       gfx::Point(1, 1), 3.f, SkColorSetARGB(24, 32, 64, 128));
 418   EXPECT_EQ(expected, blended);
 419
 420   blended = FilterOperation::Blend(&from, &to, 0.75);
 421   expected = FilterOperation::CreateDropShadowFilter(
 422       gfx::Point(2, 4), 5.f, SkColorSetARGB(42, 30, 61, 121));
 423   EXPECT_EQ(expected, blended);
 424
 425   blended = FilterOperation::Blend(&from, &to, 1.5);
 426   expected = FilterOperation::CreateDropShadowFilter(
 427       gfx::Point(5, 8), 8.f, SkColorSetARGB(69, 30, 59, 118));
 428   EXPECT_EQ(expected, blended);
 429 }
 430
 431 TEST(FilterOperationsTest, BlendDropShadowWithNull) {
 432   FilterOperation filter = FilterOperation::CreateDropShadowFilter(
 433       gfx::Point(4, 4), 4.f, SkColorSetARGB(255, 40, 0, 0));
 434
 435   FilterOperation blended = FilterOperation::Blend(&filter, NULL, 0.25);
 436   FilterOperation expected = FilterOperation::CreateDropShadowFilter(
 437       gfx::Point(3, 3), 3.f, SkColorSetARGB(191, 40, 0, 0));
 438   EXPECT_EQ(expected, blended);
 439
 440   blended = FilterOperation::Blend(NULL, &filter, 0.25);
 441   expected = FilterOperation::CreateDropShadowFilter(
 442       gfx::Point(1, 1), 1.f, SkColorSetARGB(64, 40, 0, 0));
 443   EXPECT_EQ(expected, blended);
 444 }
 445
 446 TEST(FilterOperationsTest, BlendZoomFilters) {
 447   FilterOperation from = FilterOperation::CreateZoomFilter(2.f, 3);
 448   FilterOperation to = FilterOperation::CreateZoomFilter(6.f, 0);
 449
 450   FilterOperation blended = FilterOperation::Blend(&from, &to, -0.75);
 451   FilterOperation expected = FilterOperation::CreateZoomFilter(1.f, 5);
 452   EXPECT_EQ(expected, blended);
 453
 454   blended = FilterOperation::Blend(&from, &to, 0.75);
 455   expected = FilterOperation::CreateZoomFilter(5.f, 1);
 456   EXPECT_EQ(expected, blended);
 457
 458   blended = FilterOperation::Blend(&from, &to, 1.5);
 459   expected = FilterOperation::CreateZoomFilter(8.f, 0);
 460   EXPECT_EQ(expected, blended);
 461 }
 462
 463 TEST(FilterOperationsTest, BlendZoomWithNull) {
 464   FilterOperation filter = FilterOperation::CreateZoomFilter(2.f, 1);
 465
 466   FilterOperation blended = FilterOperation::Blend(&filter, NULL, 0.25);
 467   FilterOperation expected = FilterOperation::CreateZoomFilter(1.75f, 1);
 468   EXPECT_EQ(expected, blended);
 469
 470   blended = FilterOperation::Blend(NULL, &filter, 0.25);
 471   expected = FilterOperation::CreateZoomFilter(1.25f, 0);
 472   EXPECT_EQ(expected, blended);
 473 }
 474
 475 TEST(FilterOperationsTest, BlendSaturatingBrightnessFilters) {
 476   FilterOperation from = FilterOperation::CreateSaturatingBrightnessFilter(3.f);
 477   FilterOperation to = FilterOperation::CreateSaturatingBrightnessFilter(7.f);
 478
 479   FilterOperation blended = FilterOperation::Blend(&from, &to, -0.75);
 480   FilterOperation expected =
 481       FilterOperation::CreateSaturatingBrightnessFilter(0.f);
 482   EXPECT_EQ(expected, blended);
 483
 484   blended = FilterOperation::Blend(&from, &to, 0.75);
 485   expected = FilterOperation::CreateSaturatingBrightnessFilter(6.f);
 486   EXPECT_EQ(expected, blended);
 487
 488   blended = FilterOperation::Blend(&from, &to, 1.5);
 489   expected = FilterOperation::CreateSaturatingBrightnessFilter(9.f);
 490   EXPECT_EQ(expected, blended);
 491 }
 492
 493 TEST(FilterOperationsTest, BlendSaturatingBrightnessWithNull) {
 494   FilterOperation filter =
 495       FilterOperation::CreateSaturatingBrightnessFilter(1.f);
 496
 497   FilterOperation blended = FilterOperation::Blend(&filter, NULL, 0.25);
 498   FilterOperation expected =
 499       FilterOperation::CreateSaturatingBrightnessFilter(0.75f);
 500   EXPECT_EQ(expected, blended);
 501
 502   blended = FilterOperation::Blend(NULL, &filter, 0.25);
 503   expected = FilterOperation::CreateSaturatingBrightnessFilter(0.25f);
 504   EXPECT_EQ(expected, blended);
 505 }
 506
 507 TEST(FilterOperationsTest, BlendReferenceFilters) {
 508   skia::RefPtr<SkImageFilter> from_filter = skia::AdoptRef(
 509       new SkBlurImageFilter(1.f, 1.f));
 510   skia::RefPtr<SkImageFilter> to_filter = skia::AdoptRef(
 511       new SkBlurImageFilter(2.f, 2.f));
 512   FilterOperation from = FilterOperation::CreateReferenceFilter(from_filter);
 513   FilterOperation to = FilterOperation::CreateReferenceFilter(to_filter);
 514
 515   FilterOperation blended = FilterOperation::Blend(&from, &to, -0.75);
 516   EXPECT_EQ(from, blended);
 517
 518   blended = FilterOperation::Blend(&from, &to, 0.5);
 519   EXPECT_EQ(from, blended);
 520
 521   blended = FilterOperation::Blend(&from, &to, 0.6);
 522   EXPECT_EQ(to, blended);
 523
 524   blended = FilterOperation::Blend(&from, &to, 1.5);
 525   EXPECT_EQ(to, blended);
 526 }
 527
 528 TEST(FilterOperationsTest, BlendReferenceWithNull) {
 529   skia::RefPtr<SkImageFilter> image_filter = skia::AdoptRef(
 530       new SkBlurImageFilter(1.f, 1.f));
 531   FilterOperation filter = FilterOperation::CreateReferenceFilter(image_filter);
 532   FilterOperation null_filter =
 533       FilterOperation::CreateReferenceFilter(skia::RefPtr<SkImageFilter>());
 534
 535   FilterOperation blended = FilterOperation::Blend(&filter, NULL, 0.25);
 536   EXPECT_EQ(filter, blended);
 537   blended = FilterOperation::Blend(&filter, NULL, 0.75);
 538   EXPECT_EQ(null_filter, blended);
 539
 540   blended = FilterOperation::Blend(NULL, &filter, 0.25);
 541   EXPECT_EQ(null_filter, blended);
 542   blended = FilterOperation::Blend(NULL, &filter, 0.75);
 543   EXPECT_EQ(filter, blended);
 544 }
 545
 546 // Tests blending non-empty sequences that have the same length and matching
 547 // operations.
 548 TEST(FilterOperationsTest, BlendMatchingSequences) {
 549   FilterOperations from;
 550   FilterOperations to;
 551
 552   from.Append(FilterOperation::CreateBlurFilter(0.f));
 553   to.Append(FilterOperation::CreateBlurFilter(2.f));
 554
 555   from.Append(FilterOperation::CreateSaturateFilter(4.f));
 556   to.Append(FilterOperation::CreateSaturateFilter(0.f));
 557
 558   from.Append(FilterOperation::CreateZoomFilter(2.0f, 1));
 559   to.Append(FilterOperation::CreateZoomFilter(10.f, 9));
 560
 561   FilterOperations blended = to.Blend(from, -0.75);
 562   FilterOperations expected;
 563   expected.Append(FilterOperation::CreateBlurFilter(0.f));
 564   expected.Append(FilterOperation::CreateSaturateFilter(7.f));
 565   expected.Append(FilterOperation::CreateZoomFilter(1.f, 0));
 566   EXPECT_EQ(blended, expected);
 567
 568   blended = to.Blend(from, 0.75);
 569   expected.Clear();
 570   expected.Append(FilterOperation::CreateBlurFilter(1.5f));
 571   expected.Append(FilterOperation::CreateSaturateFilter(1.f));
 572   expected.Append(FilterOperation::CreateZoomFilter(8.f, 7));
 573   EXPECT_EQ(blended, expected);
 574
 575   blended = to.Blend(from, 1.5);
 576   expected.Clear();
 577   expected.Append(FilterOperation::CreateBlurFilter(3.f));
 578   expected.Append(FilterOperation::CreateSaturateFilter(0.f));
 579   expected.Append(FilterOperation::CreateZoomFilter(14.f, 13));
 580   EXPECT_EQ(blended, expected);
 581 }
 582
 583 TEST(FilterOperationsTest, BlendEmptyAndNonEmptySequences) {
 584   FilterOperations empty;
 585   FilterOperations filters;
 586
 587   filters.Append(FilterOperation::CreateGrayscaleFilter(0.75f));
 588   filters.Append(FilterOperation::CreateBrightnessFilter(2.f));
 589   filters.Append(FilterOperation::CreateHueRotateFilter(10.0f));
 590
 591   FilterOperations blended = empty.Blend(filters, -0.75);
 592   FilterOperations expected;
 593   expected.Append(FilterOperation::CreateGrayscaleFilter(1.f));
 594   expected.Append(FilterOperation::CreateBrightnessFilter(2.75f));
 595   expected.Append(FilterOperation::CreateHueRotateFilter(17.5f));
 596   EXPECT_EQ(blended, expected);
 597
 598   blended = empty.Blend(filters, 0.75);
 599   expected.Clear();
 600   expected.Append(FilterOperation::CreateGrayscaleFilter(0.1875f));
 601   expected.Append(FilterOperation::CreateBrightnessFilter(1.25f));
 602   expected.Append(FilterOperation::CreateHueRotateFilter(2.5f));
 603   EXPECT_EQ(blended, expected);
 604
 605   blended = empty.Blend(filters, 1.5);
 606   expected.Clear();
 607   expected.Append(FilterOperation::CreateGrayscaleFilter(0.f));
 608   expected.Append(FilterOperation::CreateBrightnessFilter(0.5f));
 609   expected.Append(FilterOperation::CreateHueRotateFilter(-5.f));
 610   EXPECT_EQ(blended, expected);
 611
 612   blended = filters.Blend(empty, -0.75);
 613   expected.Clear();
 614   expected.Append(FilterOperation::CreateGrayscaleFilter(0.f));
 615   expected.Append(FilterOperation::CreateBrightnessFilter(0.25f));
 616   expected.Append(FilterOperation::CreateHueRotateFilter(-7.5f));
 617   EXPECT_EQ(blended, expected);
 618
 619   blended = filters.Blend(empty, 0.75);
 620   expected.Clear();
 621   expected.Append(FilterOperation::CreateGrayscaleFilter(0.5625f));
 622   expected.Append(FilterOperation::CreateBrightnessFilter(1.75f));
 623   expected.Append(FilterOperation::CreateHueRotateFilter(7.5f));
 624   EXPECT_EQ(blended, expected);
 625
 626   blended = filters.Blend(empty, 1.5);
 627   expected.Clear();
 628   expected.Append(FilterOperation::CreateGrayscaleFilter(1.f));
 629   expected.Append(FilterOperation::CreateBrightnessFilter(2.5f));
 630   expected.Append(FilterOperation::CreateHueRotateFilter(15.f));
 631   EXPECT_EQ(blended, expected);
 632 }
 633
 634 TEST(FilterOperationsTest, BlendEmptySequences) {
 635   FilterOperations empty;
 636
 637   FilterOperations blended = empty.Blend(empty, -0.75);
 638   EXPECT_EQ(blended, empty);
 639
 640   blended = empty.Blend(empty, 0.75);
 641   EXPECT_EQ(blended, empty);
 642
 643   blended = empty.Blend(empty, 1.5);
 644   EXPECT_EQ(blended, empty);
 645 }
 646
 647 // Tests blending non-empty sequences that either have different lengths or
 648 // have non-matching operations.
 649 TEST(FilterOperationsTest, BlendNonMatchingSequences) {
 650   FilterOperations from;
 651   FilterOperations to;
 652
 653   from.Append(FilterOperation::CreateSaturateFilter(3.f));
 654   from.Append(FilterOperation::CreateBlurFilter(2.f));
 655   to.Append(FilterOperation::CreateSaturateFilter(4.f));
 656
 657   FilterOperations blended = to.Blend(from, -0.75);
 658   EXPECT_EQ(to, blended);
 659   blended = to.Blend(from, 0.75);
 660   EXPECT_EQ(to, blended);
 661   blended = to.Blend(from, 1.5);
 662   EXPECT_EQ(to, blended);
 663
 664   to.Append(FilterOperation::CreateHueRotateFilter(0.5f));
 665   blended = to.Blend(from, -0.75);
 666   EXPECT_EQ(to, blended);
 667   blended = to.Blend(from, 0.75);
 668   EXPECT_EQ(to, blended);
 669   blended = to.Blend(from, 1.5);
 670   EXPECT_EQ(to, blended);
 671 }
 672
 673 }  // namespace
 674 }  // namespace cc