cc: Control activation from the Scheduler

cc/test/layer_tree_test.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/test/layer_tree_test.h"
 
 #include "base/command_line.h"
 #include "cc/animation/animation.h"
 #include "cc/animation/animation_registrar.h"
 #include "cc/animation/layer_animation_controller.h"
@@ skipping 19 matching lines @@
 TestHooks::TestHooks() {}
 
 TestHooks::~TestHooks() {}
 
 bool TestHooks::PrepareToDrawOnThread(LayerTreeHostImpl* host_impl,
                                       LayerTreeHostImpl::FrameData* frame_data,
                                       bool result) {
   return true;
 }
 
-bool TestHooks::CanActivatePendingTree(LayerTreeHostImpl* host_impl) {
-  return true;
-}
-
-bool TestHooks::CanActivatePendingTreeIfNeeded(LayerTreeHostImpl* host_impl) {
-  return true;
-}
-
 // Adapts LayerTreeHostImpl for test. Runs real code, then invokes test hooks.
 class LayerTreeHostImplForTesting : public LayerTreeHostImpl {
  public:
   static scoped_ptr<LayerTreeHostImplForTesting> Create(
       TestHooks* test_hooks,
       const LayerTreeSettings& settings,
       LayerTreeHostImplClient* host_impl_client,
       Proxy* proxy,
       RenderingStatsInstrumentation* stats_instrumentation) {
     return make_scoped_ptr(
         new LayerTreeHostImplForTesting(test_hooks,
                                         settings,
                                         host_impl_client,
                                         proxy,
                                         stats_instrumentation));
   }
 
  protected:
   LayerTreeHostImplForTesting(
       TestHooks* test_hooks,
       const LayerTreeSettings& settings,
       LayerTreeHostImplClient* host_impl_client,
       Proxy* proxy,
       RenderingStatsInstrumentation* stats_instrumentation)
       : LayerTreeHostImpl(settings,
                           host_impl_client,
                           proxy,
                           stats_instrumentation),
-        test_hooks_(test_hooks) {}
+        test_hooks_(test_hooks),
+        block_notify_ready_to_activate_for_testing_(false),
+        notify_ready_to_activate_was_blocked_(false) {}
+
+  virtual void BeginFrame(const BeginFrameArgs& args) OVERRIDE {
+    test_hooks_->WillBeginImplFrameOnThread(this, args);
+    LayerTreeHostImpl::BeginFrame(args);
+  }
 
   virtual void BeginCommit() OVERRIDE {
     LayerTreeHostImpl::BeginCommit();
     test_hooks_->BeginCommitOnThread(this);
   }
 
   virtual void CommitComplete() OVERRIDE {
     LayerTreeHostImpl::CommitComplete();
     test_hooks_->CommitCompleteOnThread(this);
 
@@ skipping 20 matching lines @@
     bool result = LayerTreeHostImpl::SwapBuffers(frame);
     test_hooks_->SwapBuffersOnThread(this, result);
     return result;
   }
 
   virtual void OnSwapBuffersComplete(const CompositorFrameAck* ack) OVERRIDE {
     LayerTreeHostImpl::OnSwapBuffersComplete(ack);
     test_hooks_->SwapBuffersCompleteOnThread(this);
   }
 
-  virtual void ActivatePendingTreeIfNeeded() OVERRIDE {
-    if (!pending_tree())
-      return;
+  virtual void NotifyReadyToActivate() OVERRIDE {
+    if (block_notify_ready_to_activate_for_testing_)
+      notify_ready_to_activate_was_blocked_ = true;
+    else
+      client_->NotifyReadyToActivate();
+  }
 
-    if (!test_hooks_->CanActivatePendingTreeIfNeeded(this))
-      return;
-
-    LayerTreeHostImpl::ActivatePendingTreeIfNeeded();
+  virtual void BlockNotifyReadyToActivateForTesting(bool block) OVERRIDE {
+    block_notify_ready_to_activate_for_testing_ = block;
+    if (!block && notify_ready_to_activate_was_blocked_) {
+      NotifyReadyToActivate();
+      notify_ready_to_activate_was_blocked_ = false;
+    }
   }
 
   virtual void ActivatePendingTree() OVERRIDE {
-    if (!test_hooks_->CanActivatePendingTree(this))
-      return;
-
     test_hooks_->WillActivateTreeOnThread(this);
     LayerTreeHostImpl::ActivatePendingTree();
     DCHECK(!pending_tree());
     test_hooks_->DidActivateTreeOnThread(this);
   }
 
   virtual bool InitializeRenderer(scoped_ptr<OutputSurface> output_surface)
       OVERRIDE {
     bool success = LayerTreeHostImpl::InitializeRenderer(output_surface.Pass());
     test_hooks_->InitializedRendererOnThread(this, success);
@@ skipping 25 matching lines @@
     }
     test_hooks_->UpdateAnimationState(this, has_unfinished_animation);
   }
 
   virtual base::TimeDelta LowFrequencyAnimationInterval() const OVERRIDE {
     return base::TimeDelta::FromMilliseconds(16);
   }
 
  private:
   TestHooks* test_hooks_;
+  bool block_notify_ready_to_activate_for_testing_;
+  bool notify_ready_to_activate_was_blocked_;
 };
 
 // Adapts LayerTreeHost for test. Injects LayerTreeHostImplForTesting.
 class LayerTreeHostForTesting : public cc::LayerTreeHost {
  public:
   static scoped_ptr<LayerTreeHostForTesting> Create(
       TestHooks* test_hooks,
       cc::LayerTreeHostClient* host_client,
       const cc::LayerTreeSettings& settings,
       scoped_refptr<base::SingleThreadTaskRunner> impl_task_runner) {
@@ skipping 438 matching lines @@
 
 scoped_refptr<cc::ContextProvider> LayerTreeTest::
     OffscreenContextProviderForCompositorThread() {
   if (!compositor_thread_contexts_.get() ||
       compositor_thread_contexts_->DestroyedOnMainThread())
     compositor_thread_contexts_ = TestContextProvider::Create();
   return compositor_thread_contexts_;
 }
 
 }  // namespace cc