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1 // Copyright 2011 The Chromium Authors. All rights reserved. | 1 // Copyright 2011 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "cc/trees/layer_tree_host_impl.h" | 5 #include "cc/trees/layer_tree_host_impl.h" |
6 | 6 |
7 #include <algorithm> | 7 #include <algorithm> |
8 #include <limits> | 8 #include <limits> |
9 | 9 |
10 #include "base/basictypes.h" | 10 #include "base/basictypes.h" |
11 #include "base/containers/hash_tables.h" | 11 #include "base/containers/hash_tables.h" |
12 #include "base/json/json_writer.h" | 12 #include "base/json/json_writer.h" |
13 #include "base/metrics/histogram.h" | 13 #include "base/metrics/histogram.h" |
14 #include "base/stl_util.h" | 14 #include "base/stl_util.h" |
15 #include "base/strings/stringprintf.h" | 15 #include "base/strings/stringprintf.h" |
| 16 #include "cc/animation/animation_id_provider.h" |
| 17 #include "cc/animation/scroll_offset_animation_curve.h" |
16 #include "cc/animation/scrollbar_animation_controller.h" | 18 #include "cc/animation/scrollbar_animation_controller.h" |
17 #include "cc/animation/timing_function.h" | 19 #include "cc/animation/timing_function.h" |
18 #include "cc/base/latency_info_swap_promise_monitor.h" | 20 #include "cc/base/latency_info_swap_promise_monitor.h" |
19 #include "cc/base/math_util.h" | 21 #include "cc/base/math_util.h" |
20 #include "cc/base/util.h" | 22 #include "cc/base/util.h" |
21 #include "cc/debug/benchmark_instrumentation.h" | 23 #include "cc/debug/benchmark_instrumentation.h" |
22 #include "cc/debug/debug_rect_history.h" | 24 #include "cc/debug/debug_rect_history.h" |
23 #include "cc/debug/devtools_instrumentation.h" | 25 #include "cc/debug/devtools_instrumentation.h" |
24 #include "cc/debug/frame_rate_counter.h" | 26 #include "cc/debug/frame_rate_counter.h" |
25 #include "cc/debug/paint_time_counter.h" | 27 #include "cc/debug/paint_time_counter.h" |
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2255 active_tree_->SetCurrentlyScrollingLayer(scrolling_layer_impl); | 2257 active_tree_->SetCurrentlyScrollingLayer(scrolling_layer_impl); |
2256 should_bubble_scrolls_ = (type != NonBubblingGesture); | 2258 should_bubble_scrolls_ = (type != NonBubblingGesture); |
2257 wheel_scrolling_ = (type == Wheel); | 2259 wheel_scrolling_ = (type == Wheel); |
2258 client_->RenewTreePriority(); | 2260 client_->RenewTreePriority(); |
2259 UMA_HISTOGRAM_BOOLEAN("TryScroll.SlowScroll", false); | 2261 UMA_HISTOGRAM_BOOLEAN("TryScroll.SlowScroll", false); |
2260 return ScrollStarted; | 2262 return ScrollStarted; |
2261 } | 2263 } |
2262 return ScrollIgnored; | 2264 return ScrollIgnored; |
2263 } | 2265 } |
2264 | 2266 |
| 2267 InputHandler::ScrollStatus LayerTreeHostImpl::ScrollAnimated( |
| 2268 const gfx::Point& viewport_point, |
| 2269 const gfx::Vector2dF& scroll_delta) { |
| 2270 if (CurrentlyScrollingLayer()) { |
| 2271 // TODO(skobes): Update the target of the existing animation. |
| 2272 return ScrollIgnored; |
| 2273 } |
| 2274 InputHandler::ScrollStatus scroll_status = ScrollBegin(viewport_point, Wheel); |
| 2275 if (scroll_status == ScrollStarted) { |
| 2276 for (LayerImpl* layer_impl = CurrentlyScrollingLayer(); layer_impl; |
| 2277 layer_impl = layer_impl->parent()) { |
| 2278 if (!layer_impl->scrollable()) |
| 2279 continue; |
| 2280 |
| 2281 gfx::Vector2dF current_offset = layer_impl->TotalScrollOffset(); |
| 2282 gfx::Vector2dF target_offset = current_offset + scroll_delta; |
| 2283 target_offset.SetToMax(gfx::Vector2dF()); |
| 2284 target_offset.SetToMin(layer_impl->MaxScrollOffset()); |
| 2285 gfx::Vector2dF actual_delta = target_offset - current_offset; |
| 2286 |
| 2287 const float kEpsilon = 0.1f; |
| 2288 bool can_layer_scroll = (std::abs(actual_delta.x()) > kEpsilon || |
| 2289 std::abs(actual_delta.y()) > kEpsilon); |
| 2290 |
| 2291 if (!can_layer_scroll) |
| 2292 continue; |
| 2293 |
| 2294 active_tree_->SetCurrentlyScrollingLayer(layer_impl); |
| 2295 |
| 2296 scoped_ptr<ScrollOffsetAnimationCurve> curve = |
| 2297 ScrollOffsetAnimationCurve::Create(target_offset, |
| 2298 EaseInOutTimingFunction::Create()); |
| 2299 curve->SetInitialValue(current_offset); |
| 2300 |
| 2301 scoped_ptr<Animation> animation = |
| 2302 Animation::Create(curve->Clone().Pass(), |
| 2303 AnimationIdProvider::NextAnimationId(), |
| 2304 AnimationIdProvider::NextGroupId(), |
| 2305 Animation::ScrollOffset); |
| 2306 animation->set_is_impl_only(true); |
| 2307 |
| 2308 layer_impl->layer_animation_controller()->AddAnimation(animation.Pass()); |
| 2309 |
| 2310 SetNeedsAnimate(); |
| 2311 return ScrollStarted; |
| 2312 } |
| 2313 } |
| 2314 ScrollEnd(); |
| 2315 return scroll_status; |
| 2316 } |
| 2317 |
2265 gfx::Vector2dF LayerTreeHostImpl::ScrollLayerWithViewportSpaceDelta( | 2318 gfx::Vector2dF LayerTreeHostImpl::ScrollLayerWithViewportSpaceDelta( |
2266 LayerImpl* layer_impl, | 2319 LayerImpl* layer_impl, |
2267 float scale_from_viewport_to_screen_space, | 2320 float scale_from_viewport_to_screen_space, |
2268 const gfx::PointF& viewport_point, | 2321 const gfx::PointF& viewport_point, |
2269 const gfx::Vector2dF& viewport_delta) { | 2322 const gfx::Vector2dF& viewport_delta) { |
2270 // Layers with non-invertible screen space transforms should not have passed | 2323 // Layers with non-invertible screen space transforms should not have passed |
2271 // the scroll hit test in the first place. | 2324 // the scroll hit test in the first place. |
2272 DCHECK(layer_impl->screen_space_transform().IsInvertible()); | 2325 DCHECK(layer_impl->screen_space_transform().IsInvertible()); |
2273 gfx::Transform inverse_screen_space_transform( | 2326 gfx::Transform inverse_screen_space_transform( |
2274 gfx::Transform::kSkipInitialization); | 2327 gfx::Transform::kSkipInitialization); |
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3146 } | 3199 } |
3147 | 3200 |
3148 void LayerTreeHostImpl::UnregisterPictureLayerImpl(PictureLayerImpl* layer) { | 3201 void LayerTreeHostImpl::UnregisterPictureLayerImpl(PictureLayerImpl* layer) { |
3149 std::vector<PictureLayerImpl*>::iterator it = | 3202 std::vector<PictureLayerImpl*>::iterator it = |
3150 std::find(picture_layers_.begin(), picture_layers_.end(), layer); | 3203 std::find(picture_layers_.begin(), picture_layers_.end(), layer); |
3151 DCHECK(it != picture_layers_.end()); | 3204 DCHECK(it != picture_layers_.end()); |
3152 picture_layers_.erase(it); | 3205 picture_layers_.erase(it); |
3153 } | 3206 } |
3154 | 3207 |
3155 } // namespace cc | 3208 } // namespace cc |
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