1 // Copyright 2014 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 "ui/compositor/layer_animator_collection.h" 6 7 #include <set> 8 9 #include "base/time/time.h" 10 #include "ui/compositor/layer_animator.h" 11 #include "ui/gfx/frame_time.h" 12 13 namespace ui { 14 15 LayerAnimatorCollection::LayerAnimatorCollection( 16 LayerAnimatorCollectionDelegate* delegate) 17 : delegate_(delegate), 18 last_tick_time_(gfx::FrameTime::Now()) { 19 } 20 21 LayerAnimatorCollection::~LayerAnimatorCollection() { 22 } 23 24 void LayerAnimatorCollection::StartAnimator( 25 scoped_refptr<LayerAnimator> animator) { 26 DCHECK_EQ(0U, animators_.count(animator)); 27 if (!animators_.size()) 28 last_tick_time_ = gfx::FrameTime::Now(); 29 animators_.insert(animator); 30 if (delegate_) 31 delegate_->ScheduleAnimationForLayerCollection(); 32 } 33 34 void LayerAnimatorCollection::StopAnimator( 35 scoped_refptr<LayerAnimator> animator) { 36 DCHECK_GT(animators_.count(animator), 0U); 37 animators_.erase(animator); 38 } 39 40 bool LayerAnimatorCollection::HasActiveAnimators() const { 41 return !animators_.empty(); 42 } 43 44 void LayerAnimatorCollection::Progress(base::TimeTicks now) { 45 last_tick_time_ = now; 46 std::set<scoped_refptr<LayerAnimator> > list = animators_; 47 for (std::set<scoped_refptr<LayerAnimator> >::iterator iter = list.begin(); 48 iter != list.end(); 49 ++iter) { 50 // Make sure the animator is still valid. 51 if (animators_.count(*iter) > 0) 52 (*iter)->Step(now); 53 } 54 } 55 56 } // namespace ui 57
