src/cc/animation/scrollbar_animation_controller_thinning_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/animation/scrollbar_animation_controller_thinning.h"
   6
   7 #include "cc/layers/solid_color_scrollbar_layer_impl.h"
   8 #include "cc/test/fake_impl_proxy.h"
   9 #include "cc/test/fake_layer_tree_host_impl.h"
  10 #include "cc/test/geometry_test_utils.h"
  11 #include "cc/test/test_shared_bitmap_manager.h"
  12 #include "cc/trees/layer_tree_impl.h"
  13 #include "testing/gtest/include/gtest/gtest.h"
  14
  15 namespace cc {
  16 namespace {
  17
  18 class ScrollbarAnimationControllerThinningTest
  19     : public testing::Test,
  20       public ScrollbarAnimationControllerClient {
  21  public:
  22   ScrollbarAnimationControllerThinningTest()
  23       : host_impl_(&proxy_, &shared_bitmap_manager_) {}
  24
  25   void PostDelayedScrollbarFade(const base::Closure& start_fade,
  26                                 base::TimeDelta delay) override {
  27     start_fade_ = start_fade;
  28   }
  29   void SetNeedsScrollbarAnimationFrame() override {}
  30
  31  protected:
  32   virtual void SetUp() {
  33     scoped_ptr<LayerImpl> scroll_layer =
  34         LayerImpl::Create(host_impl_.active_tree(), 1);
  35     clip_layer_ = LayerImpl::Create(host_impl_.active_tree(), 3);
  36     scroll_layer->SetScrollClipLayer(clip_layer_->id());
  37     LayerImpl* scroll_layer_ptr = scroll_layer.get();
  38     clip_layer_->AddChild(scroll_layer.Pass());
  39
  40     const int kId = 2;
  41     const int kThumbThickness = 10;
  42     const int kTrackStart = 0;
  43     const bool kIsLeftSideVerticalScrollbar = false;
  44     const bool kIsOverlayScrollbar = true;
  45     scrollbar_layer_ =
  46         SolidColorScrollbarLayerImpl::Create(host_impl_.active_tree(),
  47                                              kId,
  48                                              HORIZONTAL,
  49                                              kThumbThickness,
  50                                              kTrackStart,
  51                                              kIsLeftSideVerticalScrollbar,
  52                                              kIsOverlayScrollbar);
  53
  54     scrollbar_layer_->SetScrollLayerAndClipLayerByIds(scroll_layer_ptr->id(),
  55                                                       clip_layer_->id());
  56     clip_layer_->SetBounds(gfx::Size(100, 100));
  57     scroll_layer_ptr->SetBounds(gfx::Size(200, 200));
  58
  59     scrollbar_controller_ = ScrollbarAnimationControllerThinning::Create(
  60         scroll_layer_ptr,
  61         this,
  62         base::TimeDelta::FromSeconds(2),
  63         base::TimeDelta::FromSeconds(5),
  64         base::TimeDelta::FromSeconds(3));
  65   }
  66
  67   FakeImplProxy proxy_;
  68   TestSharedBitmapManager shared_bitmap_manager_;
  69   FakeLayerTreeHostImpl host_impl_;
  70   scoped_ptr<ScrollbarAnimationControllerThinning> scrollbar_controller_;
  71   scoped_ptr<LayerImpl> clip_layer_;
  72   scoped_ptr<SolidColorScrollbarLayerImpl> scrollbar_layer_;
  73
  74   base::Closure start_fade_;
  75 };
  76
  77 // Check initialization of scrollbar.
  78 TEST_F(ScrollbarAnimationControllerThinningTest, Idle) {
  79   scrollbar_controller_->Animate(base::TimeTicks());
  80   EXPECT_FLOAT_EQ(0.7f, scrollbar_layer_->opacity());
  81   EXPECT_FLOAT_EQ(0.4f, scrollbar_layer_->thumb_thickness_scale_factor());
  82 }
  83
  84 // Check that scrollbar disappears when the layer becomes non-scrollable.
  85 TEST_F(ScrollbarAnimationControllerThinningTest, HideOnResize) {
  86   LayerImpl* scroll_layer = host_impl_.active_tree()->LayerById(1);
  87   ASSERT_TRUE(scroll_layer);
  88   EXPECT_SIZE_EQ(gfx::Size(200, 200), scroll_layer->bounds());
  89
  90   EXPECT_EQ(HORIZONTAL, scrollbar_layer_->orientation());
  91
  92   // Shrink along X axis, horizontal scrollbar should appear.
  93   clip_layer_->SetBounds(gfx::Size(100, 200));
  94   EXPECT_SIZE_EQ(gfx::Size(100, 200), clip_layer_->bounds());
  95
  96   scrollbar_controller_->DidScrollBegin();
  97
  98   scrollbar_controller_->DidScrollUpdate(false);
  99   EXPECT_FLOAT_EQ(1.0f, scrollbar_layer_->opacity());
 100
 101   scrollbar_controller_->DidScrollEnd();
 102
 103   // Shrink along Y axis and expand along X, horizontal scrollbar
 104   // should disappear.
 105   clip_layer_->SetBounds(gfx::Size(200, 100));
 106   EXPECT_SIZE_EQ(gfx::Size(200, 100), clip_layer_->bounds());
 107
 108   scrollbar_controller_->DidScrollBegin();
 109
 110   scrollbar_controller_->DidScrollUpdate(false);
 111   EXPECT_FLOAT_EQ(0.0f, scrollbar_layer_->opacity());
 112
 113   scrollbar_controller_->DidScrollEnd();
 114 }
 115
 116 // Scroll content. Confirm the scrollbar gets dark and then becomes light
 117 // after stopping.
 118 TEST_F(ScrollbarAnimationControllerThinningTest, AwakenByProgrammaticScroll) {
 119   base::TimeTicks time;
 120   time += base::TimeDelta::FromSeconds(1);
 121   scrollbar_controller_->DidScrollUpdate(false);
 122   EXPECT_FLOAT_EQ(1.0f, scrollbar_layer_->opacity());
 123   // Scrollbar doesn't change size if triggered by scroll.
 124   EXPECT_FLOAT_EQ(0.4f, scrollbar_layer_->thumb_thickness_scale_factor());
 125
 126   start_fade_.Run();
 127
 128   time += base::TimeDelta::FromSeconds(1);
 129   scrollbar_controller_->Animate(time);
 130   EXPECT_FLOAT_EQ(1.0f, scrollbar_layer_->opacity());
 131   EXPECT_FLOAT_EQ(0.4f, scrollbar_layer_->thumb_thickness_scale_factor());
 132
 133   // Subsequent scroll restarts animation.
 134   scrollbar_controller_->DidScrollUpdate(false);
 135
 136   start_fade_.Run();
 137
 138   time += base::TimeDelta::FromSeconds(2);
 139   scrollbar_controller_->Animate(time);
 140   EXPECT_FLOAT_EQ(1.0f, scrollbar_layer_->opacity());
 141   EXPECT_FLOAT_EQ(0.4f, scrollbar_layer_->thumb_thickness_scale_factor());
 142
 143   time += base::TimeDelta::FromSeconds(1);
 144   scrollbar_controller_->Animate(time);
 145   EXPECT_FLOAT_EQ(0.9f, scrollbar_layer_->opacity());
 146   EXPECT_FLOAT_EQ(0.4f, scrollbar_layer_->thumb_thickness_scale_factor());
 147
 148   time += base::TimeDelta::FromSeconds(1);
 149   scrollbar_controller_->Animate(time);
 150   EXPECT_FLOAT_EQ(0.8f, scrollbar_layer_->opacity());
 151   EXPECT_FLOAT_EQ(0.4f, scrollbar_layer_->thumb_thickness_scale_factor());
 152
 153   time += base::TimeDelta::FromSeconds(1);
 154   scrollbar_controller_->Animate(time);
 155   EXPECT_FLOAT_EQ(0.7f, scrollbar_layer_->opacity());
 156   EXPECT_FLOAT_EQ(0.4f, scrollbar_layer_->thumb_thickness_scale_factor());
 157 }
 158
 159 // Initiate a scroll when the pointer is already near the scrollbar. It should
 160 // remain thick.
 161 TEST_F(ScrollbarAnimationControllerThinningTest, ScrollWithMouseNear) {
 162   base::TimeTicks time;
 163   time += base::TimeDelta::FromSeconds(1);
 164
 165   scrollbar_controller_->DidMouseMoveNear(1);
 166   scrollbar_controller_->Animate(time);
 167   time += base::TimeDelta::FromSeconds(3);
 168
 169   scrollbar_controller_->Animate(time);
 170   EXPECT_FLOAT_EQ(1.0f, scrollbar_layer_->thumb_thickness_scale_factor());
 171
 172   scrollbar_controller_->DidScrollUpdate(false);
 173   start_fade_.Run();
 174   scrollbar_controller_->Animate(time);
 175   EXPECT_FLOAT_EQ(1.0f, scrollbar_layer_->opacity());
 176   // Scrollbar should still be thick.
 177   EXPECT_FLOAT_EQ(1.0f, scrollbar_layer_->thumb_thickness_scale_factor());
 178
 179   time += base::TimeDelta::FromSeconds(5);
 180   scrollbar_controller_->Animate(time);
 181   EXPECT_FLOAT_EQ(0.7f, scrollbar_layer_->opacity());
 182   EXPECT_FLOAT_EQ(1.0f, scrollbar_layer_->thumb_thickness_scale_factor());
 183 }
 184
 185 // Move the pointer near the scrollbar. Confirm it gets thick and narrow when
 186 // moved away.
 187 TEST_F(ScrollbarAnimationControllerThinningTest, MouseNear) {
 188   base::TimeTicks time;
 189   time += base::TimeDelta::FromSeconds(1);
 190   scrollbar_controller_->DidMouseMoveNear(1);
 191   scrollbar_controller_->Animate(time);
 192   EXPECT_FLOAT_EQ(0.7f, scrollbar_layer_->opacity());
 193   EXPECT_FLOAT_EQ(0.4f, scrollbar_layer_->thumb_thickness_scale_factor());
 194
 195   // Should animate to thickened but not darken.
 196   time += base::TimeDelta::FromSeconds(1);
 197   scrollbar_controller_->Animate(time);
 198   EXPECT_FLOAT_EQ(0.7f, scrollbar_layer_->opacity());
 199   EXPECT_FLOAT_EQ(0.6f, scrollbar_layer_->thumb_thickness_scale_factor());
 200
 201   time += base::TimeDelta::FromSeconds(1);
 202   scrollbar_controller_->Animate(time);
 203   EXPECT_FLOAT_EQ(0.7f, scrollbar_layer_->opacity());
 204   EXPECT_FLOAT_EQ(0.8f, scrollbar_layer_->thumb_thickness_scale_factor());
 205
 206   time += base::TimeDelta::FromSeconds(1);
 207   scrollbar_controller_->Animate(time);
 208   EXPECT_FLOAT_EQ(0.7f, scrollbar_layer_->opacity());
 209   EXPECT_FLOAT_EQ(1.0f, scrollbar_layer_->thumb_thickness_scale_factor());
 210
 211   // Subsequent moves should not change anything.
 212   scrollbar_controller_->DidMouseMoveNear(1);
 213   scrollbar_controller_->Animate(time);
 214   EXPECT_FLOAT_EQ(0.7f, scrollbar_layer_->opacity());
 215   EXPECT_FLOAT_EQ(1.0f, scrollbar_layer_->thumb_thickness_scale_factor());
 216
 217   // Now move away from bar.
 218   time += base::TimeDelta::FromSeconds(1);
 219   scrollbar_controller_->DidMouseMoveNear(26);
 220   scrollbar_controller_->Animate(time);
 221   EXPECT_FLOAT_EQ(0.7f, scrollbar_layer_->opacity());
 222   EXPECT_FLOAT_EQ(1.0f, scrollbar_layer_->thumb_thickness_scale_factor());
 223
 224   // Animate to narrow.
 225   time += base::TimeDelta::FromSeconds(1);
 226   scrollbar_controller_->Animate(time);
 227   EXPECT_FLOAT_EQ(0.7f, scrollbar_layer_->opacity());
 228   EXPECT_FLOAT_EQ(0.8f, scrollbar_layer_->thumb_thickness_scale_factor());
 229
 230   time += base::TimeDelta::FromSeconds(1);
 231   scrollbar_controller_->Animate(time);
 232   EXPECT_FLOAT_EQ(0.7f, scrollbar_layer_->opacity());
 233   EXPECT_FLOAT_EQ(0.6f, scrollbar_layer_->thumb_thickness_scale_factor());
 234
 235   time += base::TimeDelta::FromSeconds(1);
 236   scrollbar_controller_->Animate(time);
 237   EXPECT_FLOAT_EQ(0.7f, scrollbar_layer_->opacity());
 238   EXPECT_FLOAT_EQ(0.4f, scrollbar_layer_->thumb_thickness_scale_factor());
 239 }
 240
 241 // Move the pointer over the scrollbar. Make sure it gets thick and dark
 242 // and that it gets thin and light when moved away.
 243 TEST_F(ScrollbarAnimationControllerThinningTest, MouseOver) {
 244   base::TimeTicks time;
 245   time += base::TimeDelta::FromSeconds(1);
 246   scrollbar_controller_->DidMouseMoveNear(0);
 247   scrollbar_controller_->Animate(time);
 248   EXPECT_FLOAT_EQ(0.7f, scrollbar_layer_->opacity());
 249   EXPECT_FLOAT_EQ(0.4f, scrollbar_layer_->thumb_thickness_scale_factor());
 250
 251   // Should animate to thickened and darkened.
 252   time += base::TimeDelta::FromSeconds(1);
 253   scrollbar_controller_->Animate(time);
 254   EXPECT_FLOAT_EQ(0.8f, scrollbar_layer_->opacity());
 255   EXPECT_FLOAT_EQ(0.6f, scrollbar_layer_->thumb_thickness_scale_factor());
 256
 257   time += base::TimeDelta::FromSeconds(1);
 258   scrollbar_controller_->Animate(time);
 259   EXPECT_FLOAT_EQ(0.9f, scrollbar_layer_->opacity());
 260   EXPECT_FLOAT_EQ(0.8f, scrollbar_layer_->thumb_thickness_scale_factor());
 261
 262   time += base::TimeDelta::FromSeconds(1);
 263   scrollbar_controller_->Animate(time);
 264   EXPECT_FLOAT_EQ(1.0f, scrollbar_layer_->opacity());
 265   EXPECT_FLOAT_EQ(1.0f, scrollbar_layer_->thumb_thickness_scale_factor());
 266
 267   // Subsequent moves should not change anything.
 268   scrollbar_controller_->DidMouseMoveNear(0);
 269   scrollbar_controller_->Animate(time);
 270   EXPECT_FLOAT_EQ(1.0f, scrollbar_layer_->opacity());
 271   EXPECT_FLOAT_EQ(1.0f, scrollbar_layer_->thumb_thickness_scale_factor());
 272
 273   // Now move away from bar.
 274   time += base::TimeDelta::FromSeconds(1);
 275   scrollbar_controller_->DidMouseMoveNear(26);
 276   scrollbar_controller_->Animate(time);
 277   EXPECT_FLOAT_EQ(1.0f, scrollbar_layer_->opacity());
 278   EXPECT_FLOAT_EQ(1.0f, scrollbar_layer_->thumb_thickness_scale_factor());
 279
 280   // Animate to narrow.
 281   time += base::TimeDelta::FromSeconds(1);
 282   scrollbar_controller_->Animate(time);
 283   EXPECT_FLOAT_EQ(0.9f, scrollbar_layer_->opacity());
 284   EXPECT_FLOAT_EQ(0.8f, scrollbar_layer_->thumb_thickness_scale_factor());
 285
 286   time += base::TimeDelta::FromSeconds(1);
 287   scrollbar_controller_->Animate(time);
 288   EXPECT_FLOAT_EQ(0.8f, scrollbar_layer_->opacity());
 289   EXPECT_FLOAT_EQ(0.6f, scrollbar_layer_->thumb_thickness_scale_factor());
 290
 291   time += base::TimeDelta::FromSeconds(1);
 292   scrollbar_controller_->Animate(time);
 293   EXPECT_FLOAT_EQ(0.7f, scrollbar_layer_->opacity());
 294   EXPECT_FLOAT_EQ(0.4f, scrollbar_layer_->thumb_thickness_scale_factor());
 295 }
 296
 297 // First move the pointer near the scrollbar, then over it, then back near
 298 // then far away. Confirm that first the bar gets thick, then dark, then light,
 299 // then narrow.
 300 TEST_F(ScrollbarAnimationControllerThinningTest, MouseNearThenOver) {
 301   base::TimeTicks time;
 302   time += base::TimeDelta::FromSeconds(1);
 303   scrollbar_controller_->DidMouseMoveNear(1);
 304   scrollbar_controller_->Animate(time);
 305   EXPECT_FLOAT_EQ(0.7f, scrollbar_layer_->opacity());
 306   EXPECT_FLOAT_EQ(0.4f, scrollbar_layer_->thumb_thickness_scale_factor());
 307
 308   // Should animate to thickened but not darken.
 309   time += base::TimeDelta::FromSeconds(3);
 310   scrollbar_controller_->Animate(time);
 311   EXPECT_FLOAT_EQ(0.7f, scrollbar_layer_->opacity());
 312   EXPECT_FLOAT_EQ(1.0f, scrollbar_layer_->thumb_thickness_scale_factor());
 313
 314   // Now move over.
 315   scrollbar_controller_->DidMouseMoveNear(0);
 316   scrollbar_controller_->Animate(time);
 317
 318   // Should animate to darkened.
 319   time += base::TimeDelta::FromSeconds(1);
 320   scrollbar_controller_->Animate(time);
 321   EXPECT_FLOAT_EQ(0.8f, scrollbar_layer_->opacity());
 322   EXPECT_FLOAT_EQ(1.0f, scrollbar_layer_->thumb_thickness_scale_factor());
 323
 324   time += base::TimeDelta::FromSeconds(1);
 325   scrollbar_controller_->Animate(time);
 326   EXPECT_FLOAT_EQ(0.9f, scrollbar_layer_->opacity());
 327   EXPECT_FLOAT_EQ(1.0f, scrollbar_layer_->thumb_thickness_scale_factor());
 328
 329   time += base::TimeDelta::FromSeconds(1);
 330   scrollbar_controller_->Animate(time);
 331   EXPECT_FLOAT_EQ(1.0f, scrollbar_layer_->opacity());
 332   EXPECT_FLOAT_EQ(1.0f, scrollbar_layer_->thumb_thickness_scale_factor());
 333
 334   // This is tricky. The DidMouseMoveOffScrollbar() is sent before the
 335   // subsequent DidMouseMoveNear(), if the mouse moves in that direction.
 336   // This results in the thumb thinning. We want to make sure that when the
 337   // thumb starts expanding it doesn't first narrow to the idle thinness.
 338   time += base::TimeDelta::FromSeconds(1);
 339   scrollbar_controller_->DidMouseMoveOffScrollbar();
 340   scrollbar_controller_->Animate(time);
 341
 342   time += base::TimeDelta::FromSeconds(1);
 343   scrollbar_controller_->Animate(time);
 344   EXPECT_FLOAT_EQ(0.9f, scrollbar_layer_->opacity());
 345   EXPECT_FLOAT_EQ(0.8f, scrollbar_layer_->thumb_thickness_scale_factor());
 346
 347   scrollbar_controller_->DidMouseMoveNear(1);
 348   scrollbar_controller_->Animate(time);
 349   // A new animation is kicked off.
 350
 351   time += base::TimeDelta::FromSeconds(1);
 352   scrollbar_controller_->Animate(time);
 353   // We will initiate the narrowing again, but it won't get decremented until
 354   // the new animation catches up to it.
 355   EXPECT_FLOAT_EQ(0.9f, scrollbar_layer_->opacity());
 356   // Now the thickness should be increasing, but it shouldn't happen until the
 357   // animation catches up.
 358   EXPECT_FLOAT_EQ(0.8f, scrollbar_layer_->thumb_thickness_scale_factor());
 359
 360   time += base::TimeDelta::FromSeconds(1);
 361   scrollbar_controller_->Animate(time);
 362   EXPECT_FLOAT_EQ(0.8f, scrollbar_layer_->opacity());
 363   // The thickness now gets big again.
 364   EXPECT_FLOAT_EQ(0.8f, scrollbar_layer_->thumb_thickness_scale_factor());
 365
 366   time += base::TimeDelta::FromSeconds(1);
 367   scrollbar_controller_->Animate(time);
 368   EXPECT_FLOAT_EQ(0.7f, scrollbar_layer_->opacity());
 369   // The thickness now gets big again.
 370   EXPECT_FLOAT_EQ(1.0f, scrollbar_layer_->thumb_thickness_scale_factor());
 371 }
 372
 373 }  // namespace
 374 }  // namespace cc