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Issue 1057283003: Remove parts of //cc we aren't using (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 5 years, 8 months ago
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1 // Copyright 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 "base/containers/hash_tables.h"
6 #include "cc/animation/scrollbar_animation_controller.h"
7 #include "cc/layers/append_quads_data.h"
8 #include "cc/layers/painted_scrollbar_layer.h"
9 #include "cc/layers/painted_scrollbar_layer_impl.h"
10 #include "cc/layers/scrollbar_layer_interface.h"
11 #include "cc/layers/solid_color_scrollbar_layer.h"
12 #include "cc/layers/solid_color_scrollbar_layer_impl.h"
13 #include "cc/quads/solid_color_draw_quad.h"
14 #include "cc/resources/resource_update_queue.h"
15 #include "cc/test/fake_impl_proxy.h"
16 #include "cc/test/fake_layer_tree_host.h"
17 #include "cc/test/fake_layer_tree_host_client.h"
18 #include "cc/test/fake_layer_tree_host_impl.h"
19 #include "cc/test/fake_painted_scrollbar_layer.h"
20 #include "cc/test/fake_scrollbar.h"
21 #include "cc/test/geometry_test_utils.h"
22 #include "cc/test/layer_tree_test.h"
23 #include "cc/test/mock_occlusion_tracker.h"
24 #include "cc/test/test_task_graph_runner.h"
25 #include "cc/test/test_web_graphics_context_3d.h"
26 #include "cc/trees/layer_tree_host.h"
27 #include "cc/trees/layer_tree_impl.h"
28 #include "cc/trees/occlusion_tracker.h"
29 #include "cc/trees/single_thread_proxy.h"
30 #include "cc/trees/tree_synchronizer.h"
31 #include "testing/gmock/include/gmock/gmock.h"
32 #include "testing/gtest/include/gtest/gtest.h"
33
34 namespace cc {
35 namespace {
36
37 LayerImpl* LayerImplForScrollAreaAndScrollbar(FakeLayerTreeHost* host,
38 scoped_ptr<Scrollbar> scrollbar,
39 bool reverse_order,
40 bool use_solid_color_scrollbar,
41 int thumb_thickness,
42 int track_start) {
43 scoped_refptr<Layer> layer_tree_root = Layer::Create();
44 scoped_refptr<Layer> child1 = Layer::Create();
45 scoped_refptr<Layer> child2;
46 if (use_solid_color_scrollbar) {
47 const bool kIsLeftSideVerticalScrollbar = false;
48 child2 = SolidColorScrollbarLayer::Create(scrollbar->Orientation(),
49 thumb_thickness,
50 track_start,
51 kIsLeftSideVerticalScrollbar,
52 child1->id());
53 } else {
54 child2 = PaintedScrollbarLayer::Create(scrollbar.Pass(), child1->id());
55 }
56 child2->ToScrollbarLayer()->SetClipLayer(layer_tree_root->id());
57 layer_tree_root->AddChild(child1);
58 layer_tree_root->InsertChild(child2, reverse_order ? 0 : 1);
59 host->SetRootLayer(layer_tree_root);
60 return host->CommitAndCreateLayerImplTree();
61 }
62
63 class FakeResourceTrackingLayerTreeHost : public FakeLayerTreeHost {
64 public:
65 FakeResourceTrackingLayerTreeHost(FakeLayerTreeHostClient* client,
66 const LayerTreeSettings& settings)
67 : FakeLayerTreeHost(client, settings),
68 next_id_(1),
69 total_ui_resource_created_(0),
70 total_ui_resource_deleted_(0) {
71 InitializeSingleThreaded(client, base::MessageLoopProxy::current(),
72 nullptr);
73 }
74
75 UIResourceId CreateUIResource(UIResourceClient* content) override {
76 total_ui_resource_created_++;
77 UIResourceId nid = next_id_++;
78 ui_resource_bitmap_map_.insert(
79 std::make_pair(nid, content->GetBitmap(nid, false)));
80 return nid;
81 }
82
83 // Deletes a UI resource. May safely be called more than once.
84 void DeleteUIResource(UIResourceId id) override {
85 UIResourceBitmapMap::iterator iter = ui_resource_bitmap_map_.find(id);
86 if (iter != ui_resource_bitmap_map_.end()) {
87 ui_resource_bitmap_map_.erase(iter);
88 total_ui_resource_deleted_++;
89 }
90 }
91
92 size_t UIResourceCount() { return ui_resource_bitmap_map_.size(); }
93 int TotalUIResourceDeleted() { return total_ui_resource_deleted_; }
94 int TotalUIResourceCreated() { return total_ui_resource_created_; }
95
96 gfx::Size ui_resource_size(UIResourceId id) {
97 UIResourceBitmapMap::iterator iter = ui_resource_bitmap_map_.find(id);
98 if (iter != ui_resource_bitmap_map_.end())
99 return iter->second.GetSize();
100 return gfx::Size();
101 }
102
103 UIResourceBitmap* ui_resource_bitmap(UIResourceId id) {
104 UIResourceBitmapMap::iterator iter = ui_resource_bitmap_map_.find(id);
105 if (iter != ui_resource_bitmap_map_.end())
106 return &iter->second;
107 return nullptr;
108 }
109
110 private:
111 using UIResourceBitmapMap = base::hash_map<UIResourceId, UIResourceBitmap>;
112 UIResourceBitmapMap ui_resource_bitmap_map_;
113
114 int next_id_;
115 int total_ui_resource_created_;
116 int total_ui_resource_deleted_;
117 };
118
119 class ScrollbarLayerTest : public testing::Test {
120 public:
121 ScrollbarLayerTest() : fake_client_(FakeLayerTreeHostClient::DIRECT_3D) {
122 layer_tree_settings_.single_thread_proxy_scheduler = false;
123 layer_tree_host_.reset(new FakeResourceTrackingLayerTreeHost(
124 &fake_client_, layer_tree_settings_));
125 fake_client_.SetLayerTreeHost(layer_tree_host_.get());
126 // Force output surface creation for renderer capabilities.
127 layer_tree_host_->Composite(base::TimeTicks());
128 EXPECT_FALSE(layer_tree_host_->output_surface_lost());
129 }
130
131 protected:
132 FakeLayerTreeHostClient fake_client_;
133 LayerTreeSettings layer_tree_settings_;
134 scoped_ptr<FakeResourceTrackingLayerTreeHost> layer_tree_host_;
135 };
136
137 TEST_F(ScrollbarLayerTest, ResolveScrollLayerPointer) {
138 scoped_ptr<Scrollbar> scrollbar(new FakeScrollbar);
139 LayerImpl* layer_impl_tree_root = LayerImplForScrollAreaAndScrollbar(
140 layer_tree_host_.get(), scrollbar.Pass(), false, false, 0, 0);
141
142 LayerImpl* cc_child1 = layer_impl_tree_root->children()[0];
143 PaintedScrollbarLayerImpl* cc_child2 =
144 static_cast<PaintedScrollbarLayerImpl*>(
145 layer_impl_tree_root->children()[1]);
146
147 EXPECT_EQ(cc_child1->scrollbars()->size(), 1UL);
148 EXPECT_EQ(*(cc_child1->scrollbars()->begin()), cc_child2);
149 }
150
151 TEST_F(ScrollbarLayerTest, ResolveScrollLayerPointer_ReverseOrder) {
152 scoped_ptr<Scrollbar> scrollbar(new FakeScrollbar);
153 LayerImpl* layer_impl_tree_root = LayerImplForScrollAreaAndScrollbar(
154 layer_tree_host_.get(), scrollbar.Pass(), true, false, 0, 0);
155
156 PaintedScrollbarLayerImpl* cc_child1 =
157 static_cast<PaintedScrollbarLayerImpl*>(
158 layer_impl_tree_root->children()[0]);
159 LayerImpl* cc_child2 = layer_impl_tree_root->children()[1];
160
161 EXPECT_EQ(cc_child2->scrollbars()->size(), 1UL);
162 EXPECT_EQ(*(cc_child2->scrollbars()->begin()), cc_child1);
163 }
164
165 TEST_F(ScrollbarLayerTest, ShouldScrollNonOverlayOnMainThread) {
166 // Create and attach a non-overlay scrollbar.
167 scoped_ptr<Scrollbar> scrollbar(new FakeScrollbar);
168 LayerImpl* layer_impl_tree_root = LayerImplForScrollAreaAndScrollbar(
169 layer_tree_host_.get(), scrollbar.Pass(), false, false, 0, 0);
170 PaintedScrollbarLayerImpl* scrollbar_layer_impl =
171 static_cast<PaintedScrollbarLayerImpl*>(
172 layer_impl_tree_root->children()[1]);
173
174 // When the scrollbar is not an overlay scrollbar, the scroll should be
175 // responded to on the main thread as the compositor does not yet implement
176 // scrollbar scrolling.
177 EXPECT_EQ(
178 InputHandler::SCROLL_ON_MAIN_THREAD,
179 scrollbar_layer_impl->TryScroll(gfx::Point(0, 0), InputHandler::GESTURE,
180 SCROLL_BLOCKS_ON_NONE));
181
182 // Create and attach an overlay scrollbar.
183 scrollbar.reset(new FakeScrollbar(false, false, true));
184
185 layer_impl_tree_root = LayerImplForScrollAreaAndScrollbar(
186 layer_tree_host_.get(), scrollbar.Pass(), false, false, 0, 0);
187 scrollbar_layer_impl = static_cast<PaintedScrollbarLayerImpl*>(
188 layer_impl_tree_root->children()[1]);
189
190 // The user shouldn't be able to drag an overlay scrollbar and the scroll
191 // may be handled in the compositor.
192 EXPECT_EQ(
193 InputHandler::SCROLL_IGNORED,
194 scrollbar_layer_impl->TryScroll(gfx::Point(0, 0), InputHandler::GESTURE,
195 SCROLL_BLOCKS_ON_NONE));
196 }
197
198 TEST_F(ScrollbarLayerTest, ScrollOffsetSynchronization) {
199 scoped_ptr<Scrollbar> scrollbar(new FakeScrollbar);
200 scoped_refptr<Layer> layer_tree_root = Layer::Create();
201 scoped_refptr<Layer> scroll_layer = Layer::Create();
202 scoped_refptr<Layer> content_layer = Layer::Create();
203 scoped_refptr<Layer> scrollbar_layer =
204 PaintedScrollbarLayer::Create(scrollbar.Pass(), layer_tree_root->id());
205
206 // Choose bounds to give max_scroll_offset = (30, 50).
207 layer_tree_root->SetBounds(gfx::Size(70, 150));
208 scroll_layer->SetScrollClipLayerId(layer_tree_root->id());
209 scroll_layer->SetScrollOffset(gfx::ScrollOffset(10, 20));
210 scroll_layer->SetBounds(gfx::Size(100, 200));
211 content_layer->SetBounds(gfx::Size(100, 200));
212
213 layer_tree_host_->SetRootLayer(layer_tree_root);
214 layer_tree_root->AddChild(scroll_layer);
215 scroll_layer->AddChild(content_layer);
216 layer_tree_root->AddChild(scrollbar_layer);
217 scrollbar_layer->ToScrollbarLayer()->SetScrollLayer(scroll_layer->id());
218 scrollbar_layer->ToScrollbarLayer()->SetClipLayer(layer_tree_root->id());
219
220 layer_tree_root->SavePaintProperties();
221 content_layer->SavePaintProperties();
222
223 LayerImpl* layer_impl_tree_root =
224 layer_tree_host_->CommitAndCreateLayerImplTree();
225
226 ScrollbarLayerImplBase* cc_scrollbar_layer =
227 static_cast<PaintedScrollbarLayerImpl*>(
228 layer_impl_tree_root->children()[1]);
229
230 EXPECT_EQ(10.f, cc_scrollbar_layer->current_pos());
231 EXPECT_EQ(30, cc_scrollbar_layer->maximum());
232
233 layer_tree_root->SetBounds(gfx::Size(700, 1500));
234 layer_tree_root->SavePaintProperties();
235 scroll_layer->SetBounds(gfx::Size(1000, 2000));
236 scroll_layer->SetScrollOffset(gfx::ScrollOffset(100, 200));
237 scroll_layer->SavePaintProperties();
238 content_layer->SetBounds(gfx::Size(1000, 2000));
239 content_layer->SavePaintProperties();
240
241 ScrollbarAnimationController* scrollbar_controller =
242 layer_impl_tree_root->scrollbar_animation_controller();
243 layer_impl_tree_root = layer_tree_host_->CommitAndCreateLayerImplTree();
244 EXPECT_EQ(scrollbar_controller,
245 layer_impl_tree_root->scrollbar_animation_controller());
246
247 EXPECT_EQ(100.f, cc_scrollbar_layer->current_pos());
248 EXPECT_EQ(300, cc_scrollbar_layer->maximum());
249
250 LayerImpl* scroll_layer_impl = layer_impl_tree_root->children()[0];
251 scroll_layer_impl->ScrollBy(gfx::Vector2d(12, 34));
252
253 EXPECT_EQ(112.f, cc_scrollbar_layer->current_pos());
254 EXPECT_EQ(300, cc_scrollbar_layer->maximum());
255 }
256
257 #define UPDATE_AND_EXTRACT_LAYER_POINTERS() \
258 do { \
259 scrollbar_layer->UpdateInternalContentScale(); \
260 scrollbar_layer->UpdateThumbAndTrackGeometry(); \
261 root_clip_layer_impl = layer_tree_host_->CommitAndCreateLayerImplTree(); \
262 root_layer_impl = root_clip_layer_impl->children()[0]; \
263 scrollbar_layer_impl = static_cast<PaintedScrollbarLayerImpl*>( \
264 root_layer_impl->children()[1]); \
265 scrollbar_layer_impl->ScrollbarParametersDidChange(false); \
266 } while (false)
267
268 TEST_F(ScrollbarLayerTest, UpdatePropertiesOfScrollBarWhenThumbRemoved) {
269 scoped_refptr<Layer> root_clip_layer = Layer::Create();
270 scoped_refptr<Layer> root_layer = Layer::Create();
271 scoped_refptr<Layer> content_layer = Layer::Create();
272 scoped_refptr<FakePaintedScrollbarLayer> scrollbar_layer =
273 FakePaintedScrollbarLayer::Create(false, true, root_layer->id());
274
275 root_layer->SetScrollClipLayerId(root_clip_layer->id());
276 // Give the root-clip a size that will result in MaxScrollOffset = (80, 0).
277 root_clip_layer->SetBounds(gfx::Size(20, 50));
278 root_layer->SetBounds(gfx::Size(100, 50));
279 content_layer->SetBounds(gfx::Size(100, 50));
280
281 layer_tree_host_->SetRootLayer(root_clip_layer);
282 root_clip_layer->AddChild(root_layer);
283 root_layer->AddChild(content_layer);
284 root_layer->AddChild(scrollbar_layer);
285
286 root_layer->SetScrollOffset(gfx::ScrollOffset(0, 0));
287 scrollbar_layer->SetBounds(gfx::Size(70, 10));
288 scrollbar_layer->SetScrollLayer(root_layer->id());
289 scrollbar_layer->SetClipLayer(root_clip_layer->id());
290 scrollbar_layer->fake_scrollbar()->set_location(gfx::Point(20, 10));
291 scrollbar_layer->fake_scrollbar()->set_track_rect(gfx::Rect(30, 10, 50, 10));
292 scrollbar_layer->fake_scrollbar()->set_thumb_thickness(10);
293 scrollbar_layer->fake_scrollbar()->set_thumb_length(4);
294 LayerImpl* root_clip_layer_impl = nullptr;
295 LayerImpl* root_layer_impl = nullptr;
296 PaintedScrollbarLayerImpl* scrollbar_layer_impl = nullptr;
297
298 UPDATE_AND_EXTRACT_LAYER_POINTERS();
299 EXPECT_EQ(gfx::Rect(10, 0, 4, 10).ToString(),
300 scrollbar_layer_impl->ComputeThumbQuadRect().ToString());
301
302 scrollbar_layer->fake_scrollbar()->set_has_thumb(false);
303
304 UPDATE_AND_EXTRACT_LAYER_POINTERS();
305 EXPECT_EQ(gfx::Rect(10, 0, 0, 0).ToString(),
306 scrollbar_layer_impl->ComputeThumbQuadRect().ToString());
307 }
308
309 TEST_F(ScrollbarLayerTest, ThumbRect) {
310 scoped_refptr<Layer> root_clip_layer = Layer::Create();
311 scoped_refptr<Layer> root_layer = Layer::Create();
312 scoped_refptr<Layer> content_layer = Layer::Create();
313 scoped_refptr<FakePaintedScrollbarLayer> scrollbar_layer =
314 FakePaintedScrollbarLayer::Create(false, true, root_layer->id());
315
316 root_layer->SetScrollClipLayerId(root_clip_layer->id());
317 // Give the root-clip a size that will result in MaxScrollOffset = (80, 0).
318 root_clip_layer->SetBounds(gfx::Size(20, 50));
319 root_layer->SetBounds(gfx::Size(100, 50));
320 content_layer->SetBounds(gfx::Size(100, 50));
321
322 layer_tree_host_->SetRootLayer(root_clip_layer);
323 root_clip_layer->AddChild(root_layer);
324 root_layer->AddChild(content_layer);
325 root_layer->AddChild(scrollbar_layer);
326
327 root_layer->SetScrollOffset(gfx::ScrollOffset(0, 0));
328 scrollbar_layer->SetBounds(gfx::Size(70, 10));
329 scrollbar_layer->SetScrollLayer(root_layer->id());
330 scrollbar_layer->SetClipLayer(root_clip_layer->id());
331 scrollbar_layer->fake_scrollbar()->set_location(gfx::Point(20, 10));
332 scrollbar_layer->fake_scrollbar()->set_track_rect(gfx::Rect(30, 10, 50, 10));
333 scrollbar_layer->fake_scrollbar()->set_thumb_thickness(10);
334 scrollbar_layer->fake_scrollbar()->set_thumb_length(4);
335 LayerImpl* root_clip_layer_impl = nullptr;
336 LayerImpl* root_layer_impl = nullptr;
337 PaintedScrollbarLayerImpl* scrollbar_layer_impl = nullptr;
338
339 // Thumb is at the edge of the scrollbar (should be inset to
340 // the start of the track within the scrollbar layer's
341 // position).
342 UPDATE_AND_EXTRACT_LAYER_POINTERS();
343 EXPECT_EQ(gfx::Rect(10, 0, 4, 10).ToString(),
344 scrollbar_layer_impl->ComputeThumbQuadRect().ToString());
345
346 // Under-scroll (thumb position should clamp and be unchanged).
347 root_layer->SetScrollOffset(gfx::ScrollOffset(-5, 0));
348
349 UPDATE_AND_EXTRACT_LAYER_POINTERS();
350 EXPECT_EQ(gfx::Rect(10, 0, 4, 10).ToString(),
351 scrollbar_layer_impl->ComputeThumbQuadRect().ToString());
352
353 // Over-scroll (thumb position should clamp on the far side).
354 root_layer->SetScrollOffset(gfx::ScrollOffset(85, 0));
355
356 UPDATE_AND_EXTRACT_LAYER_POINTERS();
357 EXPECT_EQ(gfx::Rect(56, 0, 4, 10).ToString(),
358 scrollbar_layer_impl->ComputeThumbQuadRect().ToString());
359
360 // Change thumb thickness and length.
361 scrollbar_layer->fake_scrollbar()->set_thumb_thickness(4);
362 scrollbar_layer->fake_scrollbar()->set_thumb_length(6);
363
364 UPDATE_AND_EXTRACT_LAYER_POINTERS();
365 EXPECT_EQ(gfx::Rect(54, 0, 6, 4).ToString(),
366 scrollbar_layer_impl->ComputeThumbQuadRect().ToString());
367
368 // Shrink the scrollbar layer to cover only the track.
369 scrollbar_layer->SetBounds(gfx::Size(50, 10));
370 scrollbar_layer->fake_scrollbar()->set_location(gfx::Point(30, 10));
371 scrollbar_layer->fake_scrollbar()->set_track_rect(gfx::Rect(30, 10, 50, 10));
372
373 UPDATE_AND_EXTRACT_LAYER_POINTERS();
374 EXPECT_EQ(gfx::Rect(44, 0, 6, 4).ToString(),
375 scrollbar_layer_impl->ComputeThumbQuadRect().ToString());
376
377 // Shrink the track in the non-scrolling dimension so that it only covers the
378 // middle third of the scrollbar layer (this does not affect the thumb
379 // position).
380 scrollbar_layer->fake_scrollbar()->set_track_rect(gfx::Rect(30, 12, 50, 6));
381
382 UPDATE_AND_EXTRACT_LAYER_POINTERS();
383 EXPECT_EQ(gfx::Rect(44, 0, 6, 4).ToString(),
384 scrollbar_layer_impl->ComputeThumbQuadRect().ToString());
385 }
386
387 TEST_F(ScrollbarLayerTest, SolidColorDrawQuads) {
388 const int kThumbThickness = 3;
389 const int kTrackStart = 1;
390 const int kTrackLength = 100;
391
392 scoped_ptr<Scrollbar> scrollbar(new FakeScrollbar(false, true, true));
393 LayerImpl* layer_impl_tree_root = LayerImplForScrollAreaAndScrollbar(
394 layer_tree_host_.get(), scrollbar.Pass(), false, true, kThumbThickness,
395 kTrackStart);
396 ScrollbarLayerImplBase* scrollbar_layer_impl =
397 static_cast<SolidColorScrollbarLayerImpl*>(
398 layer_impl_tree_root->children()[1]);
399 scrollbar_layer_impl->SetBounds(gfx::Size(kTrackLength, kThumbThickness));
400 scrollbar_layer_impl->SetCurrentPos(10.f);
401 scrollbar_layer_impl->SetMaximum(100);
402 scrollbar_layer_impl->SetVisibleToTotalLengthRatio(0.4f);
403
404 // Thickness should be overridden to 3.
405 {
406 scoped_ptr<RenderPass> render_pass = RenderPass::Create();
407 AppendQuadsData data;
408 scrollbar_layer_impl->AppendQuads(render_pass.get(), &data);
409
410 const QuadList& quads = render_pass->quad_list;
411 ASSERT_EQ(1u, quads.size());
412 EXPECT_EQ(DrawQuad::SOLID_COLOR, quads.front()->material);
413 EXPECT_EQ(gfx::Rect(6, 0, 39, 3), quads.front()->rect);
414 }
415
416 // Contents scale should scale the draw quad.
417 scrollbar_layer_impl->draw_properties().contents_scale_x = 2.f;
418 scrollbar_layer_impl->draw_properties().contents_scale_y = 2.f;
419 {
420 scoped_ptr<RenderPass> render_pass = RenderPass::Create();
421 AppendQuadsData data;
422 scrollbar_layer_impl->AppendQuads(render_pass.get(), &data);
423
424 const QuadList& quads = render_pass->quad_list;
425 ASSERT_EQ(1u, quads.size());
426 EXPECT_EQ(DrawQuad::SOLID_COLOR, quads.front()->material);
427 EXPECT_EQ(gfx::Rect(12, 0, 78, 6), quads.front()->rect);
428 }
429 scrollbar_layer_impl->draw_properties().contents_scale_x = 1.f;
430 scrollbar_layer_impl->draw_properties().contents_scale_y = 1.f;
431
432 // For solid color scrollbars, position and size should reflect the
433 // current viewport state.
434 scrollbar_layer_impl->SetVisibleToTotalLengthRatio(0.2f);
435 {
436 scoped_ptr<RenderPass> render_pass = RenderPass::Create();
437 AppendQuadsData data;
438 scrollbar_layer_impl->AppendQuads(render_pass.get(), &data);
439
440 const QuadList& quads = render_pass->quad_list;
441 ASSERT_EQ(1u, quads.size());
442 EXPECT_EQ(DrawQuad::SOLID_COLOR, quads.front()->material);
443 EXPECT_EQ(gfx::Rect(8, 0, 19, 3), quads.front()->rect);
444 }
445
446 // We shouldn't attempt div-by-zero when the maximum is zero.
447 scrollbar_layer_impl->SetCurrentPos(0.f);
448 scrollbar_layer_impl->SetMaximum(0);
449 {
450 scoped_ptr<RenderPass> render_pass = RenderPass::Create();
451 AppendQuadsData data;
452 scrollbar_layer_impl->AppendQuads(render_pass.get(), &data);
453
454 const QuadList& quads = render_pass->quad_list;
455 ASSERT_EQ(1u, quads.size());
456 EXPECT_EQ(DrawQuad::SOLID_COLOR, quads.front()->material);
457 EXPECT_EQ(gfx::Rect(1, 0, 19, 3), quads.front()->rect);
458 }
459 }
460
461 TEST_F(ScrollbarLayerTest, LayerDrivenSolidColorDrawQuads) {
462 const int kThumbThickness = 3;
463 const int kTrackStart = 0;
464 const int kTrackLength = 10;
465
466 scoped_ptr<Scrollbar> scrollbar(new FakeScrollbar(false, true, true));
467
468 {
469 scoped_refptr<Layer> layer_tree_root = Layer::Create();
470 scoped_refptr<Layer> scroll_layer = Layer::Create();
471 scroll_layer->SetScrollClipLayerId(layer_tree_root->id());
472 scoped_refptr<Layer> child1 = Layer::Create();
473 scoped_refptr<Layer> child2;
474 const bool kIsLeftSideVerticalScrollbar = false;
475 child2 = SolidColorScrollbarLayer::Create(scrollbar->Orientation(),
476 kThumbThickness,
477 kTrackStart,
478 kIsLeftSideVerticalScrollbar,
479 child1->id());
480 child2->ToScrollbarLayer()->SetScrollLayer(scroll_layer->id());
481 child2->ToScrollbarLayer()->SetClipLayer(layer_tree_root->id());
482 scroll_layer->AddChild(child1);
483 scroll_layer->InsertChild(child2, 1);
484 layer_tree_root->AddChild(scroll_layer);
485 layer_tree_host_->SetRootLayer(layer_tree_root);
486 }
487 LayerImpl* layer_impl_tree_root =
488 layer_tree_host_->CommitAndCreateLayerImplTree();
489 LayerImpl* scroll_layer_impl = layer_impl_tree_root->children()[0];
490
491 ScrollbarLayerImplBase* scrollbar_layer_impl =
492 static_cast<PaintedScrollbarLayerImpl*>(scroll_layer_impl->children()[1]);
493
494 // Choose layer bounds to give max_scroll_offset = (8, 8).
495 layer_impl_tree_root->SetBounds(gfx::Size(2, 2));
496 scroll_layer_impl->SetBounds(gfx::Size(10, 10));
497 scroll_layer_impl->ScrollBy(gfx::Vector2dF(4.f, 0.f));
498
499 scrollbar_layer_impl->SetBounds(gfx::Size(kTrackLength, kThumbThickness));
500 scrollbar_layer_impl->SetCurrentPos(4.f);
501 scrollbar_layer_impl->SetMaximum(8);
502
503 {
504 scoped_ptr<RenderPass> render_pass = RenderPass::Create();
505
506 AppendQuadsData data;
507 scrollbar_layer_impl->AppendQuads(render_pass.get(), &data);
508
509 const QuadList& quads = render_pass->quad_list;
510 ASSERT_EQ(1u, quads.size());
511 EXPECT_EQ(DrawQuad::SOLID_COLOR, quads.front()->material);
512 EXPECT_EQ(gfx::Rect(3, 0, 3, 3), quads.front()->rect);
513 }
514 }
515
516 class ScrollbarLayerSolidColorThumbTest : public testing::Test {
517 public:
518 ScrollbarLayerSolidColorThumbTest() {
519 LayerTreeSettings layer_tree_settings;
520 host_impl_.reset(new FakeLayerTreeHostImpl(layer_tree_settings, &proxy_,
521 &shared_bitmap_manager_,
522 &task_graph_runner_));
523
524 const int kThumbThickness = 3;
525 const int kTrackStart = 0;
526 const bool kIsLeftSideVerticalScrollbar = false;
527 const bool kIsOverlayScrollbar = false;
528
529 horizontal_scrollbar_layer_ =
530 SolidColorScrollbarLayerImpl::Create(host_impl_->active_tree(),
531 1,
532 HORIZONTAL,
533 kThumbThickness,
534 kTrackStart,
535 kIsLeftSideVerticalScrollbar,
536 kIsOverlayScrollbar);
537 vertical_scrollbar_layer_ =
538 SolidColorScrollbarLayerImpl::Create(host_impl_->active_tree(),
539 2,
540 VERTICAL,
541 kThumbThickness,
542 kTrackStart,
543 kIsLeftSideVerticalScrollbar,
544 kIsOverlayScrollbar);
545 }
546
547 protected:
548 FakeImplProxy proxy_;
549 TestSharedBitmapManager shared_bitmap_manager_;
550 TestTaskGraphRunner task_graph_runner_;
551 scoped_ptr<FakeLayerTreeHostImpl> host_impl_;
552 scoped_ptr<SolidColorScrollbarLayerImpl> horizontal_scrollbar_layer_;
553 scoped_ptr<SolidColorScrollbarLayerImpl> vertical_scrollbar_layer_;
554 };
555
556 TEST_F(ScrollbarLayerSolidColorThumbTest, SolidColorThumbLength) {
557 horizontal_scrollbar_layer_->SetCurrentPos(0);
558 horizontal_scrollbar_layer_->SetMaximum(10);
559
560 // Simple case - one third of the scrollable area is visible, so the thumb
561 // should be one third as long as the track.
562 horizontal_scrollbar_layer_->SetVisibleToTotalLengthRatio(0.33f);
563 horizontal_scrollbar_layer_->SetBounds(gfx::Size(100, 3));
564 EXPECT_EQ(33, horizontal_scrollbar_layer_->ComputeThumbQuadRect().width());
565
566 // The thumb's length should never be less than its thickness.
567 horizontal_scrollbar_layer_->SetVisibleToTotalLengthRatio(0.01f);
568 horizontal_scrollbar_layer_->SetBounds(gfx::Size(100, 3));
569 EXPECT_EQ(3, horizontal_scrollbar_layer_->ComputeThumbQuadRect().width());
570 }
571
572 TEST_F(ScrollbarLayerSolidColorThumbTest, SolidColorThumbPosition) {
573 horizontal_scrollbar_layer_->SetBounds(gfx::Size(100, 3));
574 horizontal_scrollbar_layer_->SetVisibleToTotalLengthRatio(0.1f);
575
576 horizontal_scrollbar_layer_->SetCurrentPos(0);
577 horizontal_scrollbar_layer_->SetMaximum(100);
578 EXPECT_EQ(0, horizontal_scrollbar_layer_->ComputeThumbQuadRect().x());
579 EXPECT_EQ(10, horizontal_scrollbar_layer_->ComputeThumbQuadRect().width());
580
581 horizontal_scrollbar_layer_->SetCurrentPos(100);
582 // The thumb is 10px long and the track is 100px, so the maximum thumb
583 // position is 90px.
584 EXPECT_EQ(90, horizontal_scrollbar_layer_->ComputeThumbQuadRect().x());
585
586 horizontal_scrollbar_layer_->SetCurrentPos(80);
587 // The scroll position is 80% of the maximum, so the thumb's position should
588 // be at 80% of its maximum or 72px.
589 EXPECT_EQ(72, horizontal_scrollbar_layer_->ComputeThumbQuadRect().x());
590 }
591
592 TEST_F(ScrollbarLayerSolidColorThumbTest, SolidColorThumbVerticalAdjust) {
593 SolidColorScrollbarLayerImpl* layers[2] =
594 { horizontal_scrollbar_layer_.get(), vertical_scrollbar_layer_.get() };
595 for (size_t i = 0; i < 2; ++i) {
596 layers[i]->SetVisibleToTotalLengthRatio(0.2f);
597 layers[i]->SetCurrentPos(25);
598 layers[i]->SetMaximum(100);
599 }
600 layers[0]->SetBounds(gfx::Size(100, 3));
601 layers[1]->SetBounds(gfx::Size(3, 100));
602
603 EXPECT_EQ(gfx::RectF(20.f, 0.f, 20.f, 3.f),
604 horizontal_scrollbar_layer_->ComputeThumbQuadRect());
605 EXPECT_EQ(gfx::RectF(0.f, 20.f, 3.f, 20.f),
606 vertical_scrollbar_layer_->ComputeThumbQuadRect());
607
608 horizontal_scrollbar_layer_->SetVerticalAdjust(10.f);
609 vertical_scrollbar_layer_->SetVerticalAdjust(10.f);
610
611 // The vertical adjustment factor has two effects:
612 // 1.) Moves the horizontal scrollbar down
613 // 2.) Increases the vertical scrollbar's effective track length which both
614 // increases the thumb's length and its position within the track.
615 EXPECT_EQ(gfx::Rect(20.f, 10.f, 20.f, 3.f),
616 horizontal_scrollbar_layer_->ComputeThumbQuadRect());
617 EXPECT_EQ(gfx::Rect(0.f, 22, 3.f, 22.f),
618 vertical_scrollbar_layer_->ComputeThumbQuadRect());
619 }
620
621 class ScrollbarLayerTestMaxTextureSize : public LayerTreeTest {
622 public:
623 ScrollbarLayerTestMaxTextureSize() {}
624
625 void SetScrollbarBounds(const gfx::Size& bounds) { bounds_ = bounds; }
626
627 void BeginTest() override {
628 scroll_layer_ = Layer::Create();
629 layer_tree_host()->root_layer()->AddChild(scroll_layer_);
630
631 scoped_ptr<Scrollbar> scrollbar(new FakeScrollbar);
632 scrollbar_layer_ =
633 PaintedScrollbarLayer::Create(scrollbar.Pass(), scroll_layer_->id());
634 scrollbar_layer_->SetScrollLayer(scroll_layer_->id());
635 scrollbar_layer_->SetLayerTreeHost(layer_tree_host());
636 scrollbar_layer_->SetBounds(bounds_);
637 scrollbar_layer_->SetIsDrawable(true);
638 layer_tree_host()->root_layer()->AddChild(scrollbar_layer_);
639
640 PostSetNeedsCommitToMainThread();
641 }
642
643 void DidCommitAndDrawFrame() override {
644 const int kMaxTextureSize =
645 layer_tree_host()->GetRendererCapabilities().max_texture_size;
646
647 // Check first that we're actually testing something.
648 EXPECT_GT(scrollbar_layer_->bounds().width(), kMaxTextureSize);
649
650 EXPECT_EQ(scrollbar_layer_->internal_content_bounds().width(),
651 kMaxTextureSize - 1);
652 EXPECT_EQ(scrollbar_layer_->internal_content_bounds().height(),
653 kMaxTextureSize - 1);
654
655 EndTest();
656 }
657
658 void AfterTest() override {}
659
660 private:
661 scoped_refptr<PaintedScrollbarLayer> scrollbar_layer_;
662 scoped_refptr<Layer> scroll_layer_;
663 gfx::Size bounds_;
664 };
665
666 TEST_F(ScrollbarLayerTestMaxTextureSize, DirectRenderer) {
667 scoped_ptr<TestWebGraphicsContext3D> context =
668 TestWebGraphicsContext3D::Create();
669 int max_size = 0;
670 context->getIntegerv(GL_MAX_TEXTURE_SIZE, &max_size);
671 SetScrollbarBounds(gfx::Size(max_size + 100, max_size + 100));
672 RunTest(true, false, true);
673 }
674
675 TEST_F(ScrollbarLayerTestMaxTextureSize, DelegatingRenderer) {
676 scoped_ptr<TestWebGraphicsContext3D> context =
677 TestWebGraphicsContext3D::Create();
678 int max_size = 0;
679 context->getIntegerv(GL_MAX_TEXTURE_SIZE, &max_size);
680 SetScrollbarBounds(gfx::Size(max_size + 100, max_size + 100));
681 RunTest(true, true, true);
682 }
683
684 class ScrollbarLayerTestResourceCreationAndRelease : public ScrollbarLayerTest {
685 public:
686 void TestResourceUpload(int num_updates,
687 size_t expected_resources,
688 int expected_created,
689 int expected_deleted,
690 bool use_solid_color_scrollbar) {
691 scoped_ptr<Scrollbar> scrollbar(new FakeScrollbar(false, true, false));
692 scoped_refptr<Layer> layer_tree_root = Layer::Create();
693 scoped_refptr<Layer> content_layer = Layer::Create();
694 scoped_refptr<Layer> scrollbar_layer;
695 if (use_solid_color_scrollbar) {
696 const int kThumbThickness = 3;
697 const int kTrackStart = 0;
698 const bool kIsLeftSideVerticalScrollbar = false;
699 scrollbar_layer =
700 SolidColorScrollbarLayer::Create(scrollbar->Orientation(),
701 kThumbThickness,
702 kTrackStart,
703 kIsLeftSideVerticalScrollbar,
704 layer_tree_root->id());
705 } else {
706 scrollbar_layer = PaintedScrollbarLayer::Create(scrollbar.Pass(),
707 layer_tree_root->id());
708 }
709 layer_tree_root->AddChild(content_layer);
710 layer_tree_root->AddChild(scrollbar_layer);
711
712 layer_tree_host_->SetRootLayer(layer_tree_root);
713
714 scrollbar_layer->SetIsDrawable(true);
715 scrollbar_layer->SetBounds(gfx::Size(100, 100));
716 layer_tree_root->SetScrollOffset(gfx::ScrollOffset(10, 20));
717 layer_tree_root->SetBounds(gfx::Size(100, 200));
718 content_layer->SetBounds(gfx::Size(100, 200));
719 scrollbar_layer->draw_properties().content_bounds = gfx::Size(100, 200);
720 scrollbar_layer->draw_properties().visible_content_rect =
721 gfx::Rect(0, 0, 100, 200);
722 scrollbar_layer->CreateRenderSurface();
723 scrollbar_layer->draw_properties().render_target = scrollbar_layer.get();
724
725 testing::Mock::VerifyAndClearExpectations(layer_tree_host_.get());
726 EXPECT_EQ(scrollbar_layer->layer_tree_host(), layer_tree_host_.get());
727
728 ResourceUpdateQueue queue;
729 gfx::Rect screen_space_clip_rect;
730 OcclusionTracker<Layer> occlusion_tracker(screen_space_clip_rect);
731
732 scrollbar_layer->SavePaintProperties();
733 for (int update_counter = 0; update_counter < num_updates; update_counter++)
734 scrollbar_layer->Update(&queue, &occlusion_tracker);
735
736 // A non-solid-color scrollbar should have requested two textures.
737 EXPECT_EQ(expected_resources, layer_tree_host_->UIResourceCount());
738 EXPECT_EQ(expected_created, layer_tree_host_->TotalUIResourceCreated());
739 EXPECT_EQ(expected_deleted, layer_tree_host_->TotalUIResourceDeleted());
740
741 testing::Mock::VerifyAndClearExpectations(layer_tree_host_.get());
742
743 scrollbar_layer->ClearRenderSurface();
744 }
745 };
746
747 TEST_F(ScrollbarLayerTestResourceCreationAndRelease, ResourceUpload) {
748 bool use_solid_color_scrollbars = false;
749 TestResourceUpload(0, 0, 0, 0, use_solid_color_scrollbars);
750 int num_updates[3] = {1, 5, 10};
751 int created = 0;
752 int deleted = 0;
753 for (int j = 0; j < 3; j++) {
754 created += num_updates[j] * 2;
755 deleted = created - 2;
756 TestResourceUpload(num_updates[j], 2, created, deleted,
757 use_solid_color_scrollbars);
758 }
759 }
760
761 TEST_F(ScrollbarLayerTestResourceCreationAndRelease,
762 SolidColorNoResourceUpload) {
763 bool use_solid_color_scrollbars = true;
764 TestResourceUpload(0, 0, 0, 0, use_solid_color_scrollbars);
765 TestResourceUpload(1, 0, 0, 0, use_solid_color_scrollbars);
766 }
767
768 TEST_F(ScrollbarLayerTestResourceCreationAndRelease, TestResourceUpdate) {
769 gfx::Point scrollbar_location(0, 185);
770 scoped_refptr<Layer> layer_tree_root = Layer::Create();
771 scoped_refptr<Layer> content_layer = Layer::Create();
772 scoped_refptr<FakePaintedScrollbarLayer> scrollbar_layer =
773 FakePaintedScrollbarLayer::Create(false, true, layer_tree_root->id());
774
775 layer_tree_root->AddChild(content_layer);
776 layer_tree_root->AddChild(scrollbar_layer);
777
778 layer_tree_host_->SetRootLayer(layer_tree_root);
779
780 scrollbar_layer->SetIsDrawable(true);
781 scrollbar_layer->SetBounds(gfx::Size(100, 15));
782 scrollbar_layer->SetPosition(scrollbar_location);
783 layer_tree_root->SetBounds(gfx::Size(100, 200));
784 content_layer->SetBounds(gfx::Size(100, 200));
785
786 scrollbar_layer->draw_properties().content_bounds = gfx::Size(100, 200);
787 scrollbar_layer->draw_properties().visible_content_rect =
788 gfx::Rect(0, 0, 100, 200);
789
790 scrollbar_layer->CreateRenderSurface();
791 scrollbar_layer->draw_properties().render_target = scrollbar_layer.get();
792
793 testing::Mock::VerifyAndClearExpectations(layer_tree_host_.get());
794 EXPECT_EQ(scrollbar_layer->layer_tree_host(), layer_tree_host_.get());
795
796 ResourceUpdateQueue queue;
797 gfx::Rect screen_space_clip_rect;
798 size_t resource_count;
799 int expected_created, expected_deleted;
800 OcclusionTracker<Layer> occlusion_tracker(screen_space_clip_rect);
801 scrollbar_layer->SavePaintProperties();
802
803 resource_count = 2;
804 expected_created = 2;
805 expected_deleted = 0;
806 EXPECT_TRUE(scrollbar_layer->Update(&queue, &occlusion_tracker));
807 EXPECT_NE(0, scrollbar_layer->track_resource_id());
808 EXPECT_NE(0, scrollbar_layer->thumb_resource_id());
809 EXPECT_EQ(resource_count, layer_tree_host_->UIResourceCount());
810 EXPECT_EQ(expected_created, layer_tree_host_->TotalUIResourceCreated());
811 EXPECT_EQ(expected_deleted, layer_tree_host_->TotalUIResourceDeleted());
812
813 resource_count = 0;
814 expected_created = 2;
815 expected_deleted = 2;
816 scrollbar_layer->fake_scrollbar()->set_track_rect(gfx::Rect(0, 0, 0, 0));
817 EXPECT_TRUE(scrollbar_layer->Update(&queue, &occlusion_tracker));
818 EXPECT_EQ(0, scrollbar_layer->track_resource_id());
819 EXPECT_EQ(0, scrollbar_layer->thumb_resource_id());
820 EXPECT_EQ(resource_count, layer_tree_host_->UIResourceCount());
821 EXPECT_EQ(expected_created, layer_tree_host_->TotalUIResourceCreated());
822 EXPECT_EQ(expected_deleted, layer_tree_host_->TotalUIResourceDeleted());
823
824 resource_count = 0;
825 expected_created = 2;
826 expected_deleted = 2;
827 scrollbar_layer->fake_scrollbar()->set_track_rect(gfx::Rect(0, 0, 0, 0));
828 EXPECT_FALSE(scrollbar_layer->Update(&queue, &occlusion_tracker));
829 EXPECT_EQ(0, scrollbar_layer->track_resource_id());
830 EXPECT_EQ(0, scrollbar_layer->thumb_resource_id());
831 EXPECT_EQ(resource_count, layer_tree_host_->UIResourceCount());
832 EXPECT_EQ(expected_created, layer_tree_host_->TotalUIResourceCreated());
833 EXPECT_EQ(expected_deleted, layer_tree_host_->TotalUIResourceDeleted());
834
835 resource_count = 2;
836 expected_created = 4;
837 expected_deleted = 2;
838 scrollbar_layer->fake_scrollbar()->set_track_rect(gfx::Rect(30, 10, 50, 10));
839 EXPECT_TRUE(scrollbar_layer->Update(&queue, &occlusion_tracker));
840 EXPECT_NE(0, scrollbar_layer->track_resource_id());
841 EXPECT_NE(0, scrollbar_layer->thumb_resource_id());
842 EXPECT_EQ(resource_count, layer_tree_host_->UIResourceCount());
843 EXPECT_EQ(expected_created, layer_tree_host_->TotalUIResourceCreated());
844 EXPECT_EQ(expected_deleted, layer_tree_host_->TotalUIResourceDeleted());
845
846 resource_count = 1;
847 expected_created = 5;
848 expected_deleted = 4;
849 scrollbar_layer->fake_scrollbar()->set_has_thumb(false);
850 EXPECT_TRUE(scrollbar_layer->Update(&queue, &occlusion_tracker));
851 EXPECT_NE(0, scrollbar_layer->track_resource_id());
852 EXPECT_EQ(0, scrollbar_layer->thumb_resource_id());
853 EXPECT_EQ(resource_count, layer_tree_host_->UIResourceCount());
854 EXPECT_EQ(expected_created, layer_tree_host_->TotalUIResourceCreated());
855 EXPECT_EQ(expected_deleted, layer_tree_host_->TotalUIResourceDeleted());
856
857 resource_count = 0;
858 expected_created = 5;
859 expected_deleted = 5;
860 scrollbar_layer->fake_scrollbar()->set_track_rect(gfx::Rect(0, 0, 0, 0));
861 EXPECT_TRUE(scrollbar_layer->Update(&queue, &occlusion_tracker));
862 EXPECT_EQ(0, scrollbar_layer->track_resource_id());
863 EXPECT_EQ(0, scrollbar_layer->thumb_resource_id());
864 EXPECT_EQ(resource_count, layer_tree_host_->UIResourceCount());
865 EXPECT_EQ(expected_created, layer_tree_host_->TotalUIResourceCreated());
866 EXPECT_EQ(expected_deleted, layer_tree_host_->TotalUIResourceDeleted());
867
868 resource_count = 2;
869 expected_created = 7;
870 expected_deleted = 5;
871 scrollbar_layer->fake_scrollbar()->set_track_rect(gfx::Rect(30, 10, 50, 10));
872 scrollbar_layer->fake_scrollbar()->set_has_thumb(true);
873 EXPECT_TRUE(scrollbar_layer->Update(&queue, &occlusion_tracker));
874 EXPECT_NE(0, scrollbar_layer->track_resource_id());
875 EXPECT_NE(0, scrollbar_layer->thumb_resource_id());
876
877 resource_count = 1;
878 expected_created = 8;
879 expected_deleted = 7;
880 scrollbar_layer->fake_scrollbar()->set_track_rect(gfx::Rect(30, 10, 50, 10));
881 scrollbar_layer->fake_scrollbar()->set_has_thumb(false);
882 scrollbar_layer->SetBounds(gfx::Size(90, 15));
883 EXPECT_TRUE(scrollbar_layer->Update(&queue, &occlusion_tracker));
884 EXPECT_EQ(resource_count, layer_tree_host_->UIResourceCount());
885 EXPECT_EQ(expected_created, layer_tree_host_->TotalUIResourceCreated());
886 EXPECT_EQ(expected_deleted, layer_tree_host_->TotalUIResourceDeleted());
887 EXPECT_EQ(
888 gfx::Size(90, 15),
889 layer_tree_host_->ui_resource_size(scrollbar_layer->track_resource_id()));
890
891 scrollbar_layer->ResetNeedsDisplayForTesting();
892 EXPECT_FALSE(scrollbar_layer->Update(&queue, &occlusion_tracker));
893 EXPECT_NE(0, scrollbar_layer->track_resource_id());
894 EXPECT_EQ(0, scrollbar_layer->thumb_resource_id());
895 EXPECT_EQ(resource_count, layer_tree_host_->UIResourceCount());
896 EXPECT_EQ(expected_created, layer_tree_host_->TotalUIResourceCreated());
897 EXPECT_EQ(expected_deleted, layer_tree_host_->TotalUIResourceDeleted());
898
899 testing::Mock::VerifyAndClearExpectations(layer_tree_host_.get());
900 scrollbar_layer->ClearRenderSurface();
901 }
902
903 class ScaledScrollbarLayerTestResourceCreation : public ScrollbarLayerTest {
904 public:
905 void TestResourceUpload(const float test_scale) {
906 gfx::Point scrollbar_location(0, 185);
907 scoped_refptr<Layer> layer_tree_root = Layer::Create();
908 scoped_refptr<Layer> content_layer = Layer::Create();
909 scoped_refptr<FakePaintedScrollbarLayer> scrollbar_layer =
910 FakePaintedScrollbarLayer::Create(false, true, layer_tree_root->id());
911
912 layer_tree_root->AddChild(content_layer);
913 layer_tree_root->AddChild(scrollbar_layer);
914
915 layer_tree_host_->SetRootLayer(layer_tree_root);
916
917 scrollbar_layer->SetIsDrawable(true);
918 scrollbar_layer->SetBounds(gfx::Size(100, 15));
919 scrollbar_layer->SetPosition(scrollbar_location);
920 layer_tree_root->SetBounds(gfx::Size(100, 200));
921 content_layer->SetBounds(gfx::Size(100, 200));
922 gfx::SizeF scaled_size =
923 gfx::ScaleSize(scrollbar_layer->bounds(), test_scale, test_scale);
924 gfx::PointF scaled_location =
925 gfx::ScalePoint(scrollbar_layer->position(), test_scale, test_scale);
926 scrollbar_layer->draw_properties().content_bounds =
927 gfx::Size(scaled_size.width(), scaled_size.height());
928 scrollbar_layer->draw_properties().contents_scale_x = test_scale;
929 scrollbar_layer->draw_properties().contents_scale_y = test_scale;
930 scrollbar_layer->draw_properties().visible_content_rect =
931 gfx::Rect(scaled_location.x(),
932 scaled_location.y(),
933 scaled_size.width(),
934 scaled_size.height());
935 scrollbar_layer->CreateRenderSurface();
936 scrollbar_layer->draw_properties().render_target = scrollbar_layer.get();
937
938 testing::Mock::VerifyAndClearExpectations(layer_tree_host_.get());
939 EXPECT_EQ(scrollbar_layer->layer_tree_host(), layer_tree_host_.get());
940
941 ResourceUpdateQueue queue;
942 gfx::Rect screen_space_clip_rect;
943 OcclusionTracker<Layer> occlusion_tracker(screen_space_clip_rect);
944 scrollbar_layer->SavePaintProperties();
945 scrollbar_layer->Update(&queue, &occlusion_tracker);
946
947 // Verify that we have not generated any content uploads that are larger
948 // than their destination textures.
949
950 gfx::Size track_size = layer_tree_host_->ui_resource_size(
951 scrollbar_layer->track_resource_id());
952 gfx::Size thumb_size = layer_tree_host_->ui_resource_size(
953 scrollbar_layer->thumb_resource_id());
954
955 EXPECT_LE(track_size.width(),
956 scrollbar_layer->internal_content_bounds().width());
957 EXPECT_LE(track_size.height(),
958 scrollbar_layer->internal_content_bounds().height());
959 EXPECT_LE(thumb_size.width(),
960 scrollbar_layer->internal_content_bounds().width());
961 EXPECT_LE(thumb_size.height(),
962 scrollbar_layer->internal_content_bounds().height());
963
964 testing::Mock::VerifyAndClearExpectations(layer_tree_host_.get());
965
966 scrollbar_layer->ClearRenderSurface();
967 }
968 };
969
970 TEST_F(ScaledScrollbarLayerTestResourceCreation, ScaledResourceUpload) {
971 // Pick a test scale that moves the scrollbar's (non-zero) position to
972 // a non-pixel-aligned location.
973 TestResourceUpload(.041f);
974 TestResourceUpload(1.41f);
975 TestResourceUpload(4.1f);
976 }
977
978 class ScaledScrollbarLayerTestScaledRasterization : public ScrollbarLayerTest {
979 public:
980 void TestScale(const gfx::Rect scrollbar_rect, const float test_scale) {
981 bool paint_during_update = true;
982 bool has_thumb = false;
983 scoped_refptr<Layer> layer_tree_root = Layer::Create();
984 scoped_refptr<FakePaintedScrollbarLayer> scrollbar_layer =
985 FakePaintedScrollbarLayer::Create(paint_during_update,
986 has_thumb,
987 layer_tree_root->id());
988
989 layer_tree_root->AddChild(scrollbar_layer);
990
991 layer_tree_host_->SetRootLayer(layer_tree_root);
992
993 scrollbar_layer->SetBounds(scrollbar_rect.size());
994 scrollbar_layer->SetPosition(scrollbar_rect.origin());
995 scrollbar_layer->fake_scrollbar()->set_location(scrollbar_rect.origin());
996 scrollbar_layer->fake_scrollbar()->set_track_rect(scrollbar_rect);
997 gfx::SizeF scaled_size =
998 gfx::ScaleSize(scrollbar_layer->bounds(), test_scale, test_scale);
999 gfx::PointF scaled_location =
1000 gfx::ScalePoint(scrollbar_layer->position(), test_scale, test_scale);
1001 scrollbar_layer->draw_properties().content_bounds =
1002 gfx::Size(scaled_size.width(), scaled_size.height());
1003 scrollbar_layer->draw_properties().contents_scale_x = test_scale;
1004 scrollbar_layer->draw_properties().contents_scale_y = test_scale;
1005 scrollbar_layer->draw_properties().visible_content_rect =
1006 gfx::Rect(scaled_location.x(),
1007 scaled_location.y(),
1008 scaled_size.width(),
1009 scaled_size.height());
1010
1011 ResourceUpdateQueue queue;
1012 gfx::Rect screen_space_clip_rect;
1013 OcclusionTracker<Layer> occlusion_tracker(screen_space_clip_rect);
1014 scrollbar_layer->SavePaintProperties();
1015
1016 scrollbar_layer->Update(&queue, &occlusion_tracker);
1017
1018 UIResourceBitmap* bitmap = layer_tree_host_->ui_resource_bitmap(
1019 scrollbar_layer->track_resource_id());
1020
1021 DCHECK(bitmap);
1022
1023 AutoLockUIResourceBitmap locked_bitmap(*bitmap);
1024
1025 const SkColor* pixels =
1026 reinterpret_cast<const SkColor*>(locked_bitmap.GetPixels());
1027 SkColor color = argb_to_skia(
1028 scrollbar_layer->fake_scrollbar()->paint_fill_color());
1029 int width = bitmap->GetSize().width();
1030 int height = bitmap->GetSize().height();
1031
1032 // Make sure none of the corners of the bitmap were inadvertently clipped.
1033 EXPECT_EQ(color, pixels[0])
1034 << "Top left pixel doesn't match scrollbar color.";
1035
1036 EXPECT_EQ(color, pixels[width - 1])
1037 << "Top right pixel doesn't match scrollbar color.";
1038
1039 EXPECT_EQ(color, pixels[width * (height - 1)])
1040 << "Bottom left pixel doesn't match scrollbar color.";
1041
1042 EXPECT_EQ(color, pixels[width * height - 1])
1043 << "Bottom right pixel doesn't match scrollbar color.";
1044 }
1045
1046 protected:
1047 // On Android, Skia uses ABGR
1048 static SkColor argb_to_skia(SkColor c) {
1049 return (SkColorGetA(c) << SK_A32_SHIFT) |
1050 (SkColorGetR(c) << SK_R32_SHIFT) |
1051 (SkColorGetG(c) << SK_G32_SHIFT) |
1052 (SkColorGetB(c) << SK_B32_SHIFT);
1053 }
1054 };
1055
1056 TEST_F(ScaledScrollbarLayerTestScaledRasterization, TestLostPrecisionInClip) {
1057 // Try rasterization at coordinates and scale that caused problematic
1058 // rounding and clipping errors.
1059 // Vertical Scrollbars.
1060 TestScale(gfx::Rect(1240, 0, 15, 1333), 2.7754839f);
1061 TestScale(gfx::Rect(1240, 0, 15, 677), 2.46677136f);
1062
1063 // Horizontal Scrollbars.
1064 TestScale(gfx::Rect(0, 1240, 1333, 15), 2.7754839f);
1065 TestScale(gfx::Rect(0, 1240, 677, 15), 2.46677136f);
1066 }
1067
1068 } // namespace
1069 } // namespace cc
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