CC Animations: Establish AnimationHost, AnimationTimeline and AnimationPlayer

cc/trees/layer_tree_host.cc

 // Copyright 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/trees/layer_tree_host.h"
 
 #include <algorithm>
 #include <stack>
 #include <string>
 
 #include "base/atomic_sequence_num.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/location.h"
 #include "base/metrics/histogram.h"
 #include "base/single_thread_task_runner.h"
 #include "base/stl_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/thread_task_runner_handle.h"
 #include "base/trace_event/trace_event.h"
 #include "base/trace_event/trace_event_argument.h"
+#include "cc/animation/animation_host.h"
 #include "cc/animation/animation_registrar.h"
 #include "cc/animation/layer_animation_controller.h"
 #include "cc/base/math_util.h"
 #include "cc/debug/devtools_instrumentation.h"
 #include "cc/debug/frame_viewer_instrumentation.h"
 #include "cc/debug/rendering_stats_instrumentation.h"
 #include "cc/input/layer_selection_bound.h"
 #include "cc/input/page_scale_animation.h"
 #include "cc/input/top_controls_manager.h"
 #include "cc/layers/heads_up_display_layer.h"
@@ skipping 96 matching lines @@
       next_commit_forces_redraw_(false),
       shared_bitmap_manager_(shared_bitmap_manager),
       gpu_memory_buffer_manager_(gpu_memory_buffer_manager),
       task_graph_runner_(task_graph_runner),
       surface_id_namespace_(0u),
       next_surface_sequence_(1u) {
   if (settings_.accelerated_animation_enabled)
     animation_registrar_ = AnimationRegistrar::Create();
   rendering_stats_instrumentation_->set_record_rendering_stats(
       debug_state_.RecordRenderingStats());
+
+  if (settings_.use_compositor_animation_timelines) {
+    animation_host_ = AnimationHost::Create(false);
+    animation_host_->SetLayerTreeMutatorsClient(this);
+  }
 }
 
 void LayerTreeHost::InitializeThreaded(
     scoped_refptr<base::SingleThreadTaskRunner> main_task_runner,
     scoped_refptr<base::SingleThreadTaskRunner> impl_task_runner,
     scoped_ptr<BeginFrameSource> external_begin_frame_source) {
   InitializeProxy(ThreadProxy::Create(this,
                                       main_task_runner,
                                       impl_task_runner,
                                       external_begin_frame_source.Pass()));
@@ skipping 21 matching lines @@
   proxy_->Start();
   if (settings_.accelerated_animation_enabled) {
     animation_registrar_->set_supports_scroll_animations(
         proxy_->SupportsImplScrolling());
   }
 }
 
 LayerTreeHost::~LayerTreeHost() {
   TRACE_EVENT0("cc", "LayerTreeHost::~LayerTreeHost");
 
+  if (animation_host_)
+    animation_host_->SetLayerTreeMutatorsClient(nullptr);
+
   if (root_layer_.get())
     root_layer_->SetLayerTreeHost(NULL);
 
   DCHECK(swap_promise_monitor_.empty());
 
   BreakSwapPromises(SwapPromise::COMMIT_FAILS);
 
   if (proxy_) {
     DCHECK(proxy_->IsMainThread());
     proxy_->Stop();
@@ skipping 173 matching lines @@
   if (new_impl_tree_has_no_evicted_resources) {
     if (sync_tree->ContentsTexturesPurged())
       sync_tree->ResetContentsTexturesPurged();
   }
 
   sync_tree->set_has_ever_been_drawn(false);
 
   {
     TRACE_EVENT0("cc", "LayerTreeHost::PushProperties");
     TreeSynchronizer::PushProperties(root_layer(), sync_tree->root_layer());
+
+    if (animation_host_) {
+      DCHECK(host_impl->animation_host());
+      animation_host_->PushPropertiesTo(host_impl->animation_host());
+    }
   }
 
   micro_benchmark_controller_.ScheduleImplBenchmarks(host_impl);
 }
 
 void LayerTreeHost::WillCommit() {
   client_->WillCommit();
 }
 
 void LayerTreeHost::UpdateHudLayer() {
@@ skipping 892 matching lines @@
 void LayerTreeHost::SendBeginFramesToChildren(
     const BeginFrameArgs& args) const {
   client_->SendBeginFramesToChildren(args);
 }
 
 void LayerTreeHost::SetAuthoritativeVSyncInterval(
     const base::TimeDelta& interval) {
   proxy_->SetAuthoritativeVSyncInterval(interval);
 }
 
+Layer* LayerTreeHost::LayerById(int id) const {
+  LayerIdMap::const_iterator iter = layer_id_map_.find(id);
+  return iter != layer_id_map_.end() ? iter->second : NULL;
+}
+
+void LayerTreeHost::RegisterLayer(Layer* layer) {
+  DCHECK(!LayerById(layer->id()));
+  layer_id_map_[layer->id()] = layer;
+  if (animation_host_)
+    animation_host_->RegisterLayer(layer->id(), true);
+}
+
+void LayerTreeHost::UnregisterLayer(Layer* layer) {
+  DCHECK(LayerById(layer->id()));
+  if (animation_host_)
+    animation_host_->UnregisterLayer(layer->id(), true);
+  layer_id_map_.erase(layer->id());
+}
+
+bool LayerTreeHost::IsLayerInActiveTree(int layer_id) const {
+  return true;
+}
+
+bool LayerTreeHost::IsLayerInPendingTree(int layer_id) const {
+  return false;
+}
+
+void LayerTreeHost::SetMutatorsNeedCommit() {
+  SetNeedsCommit();
+}
+
+void LayerTreeHost::SetLayerFilterMutated(int layer_id,
+                                          bool active_tree,
+                                          const FilterOperations& filters) {
+  LayerAnimationValueObserver* layer = LayerById(layer_id);
+  DCHECK(layer);
+  layer->OnFilterAnimated(filters);
+}
+
+void LayerTreeHost::SetLayerOpacityMutated(int layer_id,
+                                           bool active_tree,
+                                           float opacity) {
+  LayerAnimationValueObserver* layer = LayerById(layer_id);
+  DCHECK(layer);
+  layer->OnOpacityAnimated(opacity);
+}
+
+void LayerTreeHost::SetLayerTransformMutated(int layer_id,
+                                             bool active_tree,
+                                             const gfx::Transform& transform) {
+  LayerAnimationValueObserver* layer = LayerById(layer_id);
+  DCHECK(layer);
+  layer->OnTransformAnimated(transform);
+}
+
+void LayerTreeHost::SetLayerScrollOffsetMutated(
+    int layer_id,
+    bool active_tree,
+    const gfx::ScrollOffset& scroll_offset) {
+  LayerAnimationValueObserver* layer = LayerById(layer_id);
+  DCHECK(layer);
+  layer->OnScrollOffsetAnimated(scroll_offset);
+}
+
 }  // namespace cc