| // Copyright 2014 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 "components/view_manager/animation_runner.h" |
| |
| #include "base/memory/scoped_vector.h" |
| #include "components/view_manager/animation_runner_observer.h" |
| #include "components/view_manager/scheduled_animation_group.h" |
| #include "components/view_manager/server_view.h" |
| |
| namespace view_manager { |
| namespace { |
| |
| bool ConvertViewAndAnimationPairToScheduledAnimationGroup( |
| const std::vector<AnimationRunner::ViewAndAnimationPair>& views, |
| AnimationRunner::AnimationId id, |
| base::TimeTicks now, |
| ScopedVector<ScheduledAnimationGroup>* groups) { |
| for (const auto& view_animation_pair : views) { |
| DCHECK(view_animation_pair.second); |
| scoped_ptr<ScheduledAnimationGroup> group(ScheduledAnimationGroup::Create( |
| view_animation_pair.first, now, id, *(view_animation_pair.second))); |
| if (!group.get()) |
| return false; |
| groups->push_back(group.release()); |
| } |
| return true; |
| } |
| |
| } // namespace |
| |
| AnimationRunner::AnimationRunner(base::TimeTicks now) |
| : next_id_(1), last_tick_time_(now) { |
| } |
| |
| AnimationRunner::~AnimationRunner() { |
| } |
| |
| void AnimationRunner::AddObserver(AnimationRunnerObserver* observer) { |
| observers_.AddObserver(observer); |
| } |
| |
| void AnimationRunner::RemoveObserver(AnimationRunnerObserver* observer) { |
| observers_.RemoveObserver(observer); |
| } |
| |
| AnimationRunner::AnimationId AnimationRunner::Schedule( |
| const std::vector<ViewAndAnimationPair>& views, |
| base::TimeTicks now) { |
| DCHECK_GE(now, last_tick_time_); |
| |
| const AnimationId animation_id = next_id_++; |
| ScopedVector<ScheduledAnimationGroup> groups; |
| if (!ConvertViewAndAnimationPairToScheduledAnimationGroup(views, animation_id, |
| now, &groups)) { |
| return 0; |
| } |
| |
| // Cancel any animations for the views. |
| for (auto* group : groups) { |
| ScheduledAnimationGroup* current_group = |
| view_to_animation_map_.get(group->view()); |
| if (current_group) |
| current_group->SetValuesToTargetValuesForPropertiesNotIn(*group); |
| |
| CancelAnimationForViewImpl(group->view(), CANCEL_SOURCE_SCHEDULE); |
| } |
| |
| for (auto* group : groups) { |
| group->ObtainStartValues(); |
| view_to_animation_map_.set(group->view(), make_scoped_ptr(group)); |
| DCHECK(!id_to_views_map_[animation_id].count(group->view())); |
| id_to_views_map_[animation_id].insert(group->view()); |
| } |
| // |view_to_animation_map_| owns the groups. |
| groups.weak_clear(); |
| |
| FOR_EACH_OBSERVER(AnimationRunnerObserver, observers_, |
| OnAnimationScheduled(animation_id)); |
| return animation_id; |
| } |
| |
| void AnimationRunner::CancelAnimation(AnimationId id) { |
| if (id_to_views_map_.count(id) == 0) |
| return; |
| |
| std::set<ServerView*> views(id_to_views_map_[id]); |
| for (ServerView* view : views) |
| CancelAnimationForView(view); |
| } |
| |
| void AnimationRunner::CancelAnimationForView(ServerView* view) { |
| CancelAnimationForViewImpl(view, CANCEL_SOURCE_CANCEL); |
| } |
| |
| void AnimationRunner::Tick(base::TimeTicks time) { |
| DCHECK(time >= last_tick_time_); |
| last_tick_time_ = time; |
| if (view_to_animation_map_.empty()) |
| return; |
| |
| // The animation ids of any views whose animation completes are added here. We |
| // notify after processing all views so that if an observer mutates us in some |
| // way we're aren't left in a weird state. |
| std::set<AnimationId> animations_completed; |
| for (ViewToAnimationMap::iterator i = view_to_animation_map_.begin(); |
| i != view_to_animation_map_.end();) { |
| if (i->second->Tick(time)) { |
| const AnimationId animation_id = i->second->id(); |
| ServerView* view = i->first; |
| ++i; |
| if (RemoveViewFromMaps(view)) |
| animations_completed.insert(animation_id); |
| } else { |
| ++i; |
| } |
| } |
| for (const AnimationId& id : animations_completed) { |
| FOR_EACH_OBSERVER(AnimationRunnerObserver, observers_, OnAnimationDone(id)); |
| } |
| } |
| |
| void AnimationRunner::CancelAnimationForViewImpl(ServerView* view, |
| CancelSource source) { |
| if (!view_to_animation_map_.contains(view)) |
| return; |
| |
| const AnimationId animation_id = view_to_animation_map_.get(view)->id(); |
| if (RemoveViewFromMaps(view)) { |
| // This was the last view in the group. |
| if (source == CANCEL_SOURCE_CANCEL) { |
| FOR_EACH_OBSERVER(AnimationRunnerObserver, observers_, |
| OnAnimationCanceled(animation_id)); |
| } else { |
| FOR_EACH_OBSERVER(AnimationRunnerObserver, observers_, |
| OnAnimationInterrupted(animation_id)); |
| } |
| } |
| } |
| |
| bool AnimationRunner::RemoveViewFromMaps(ServerView* view) { |
| DCHECK(view_to_animation_map_.contains(view)); |
| |
| const AnimationId animation_id = view_to_animation_map_.get(view)->id(); |
| view_to_animation_map_.erase(view); |
| |
| DCHECK(id_to_views_map_.count(animation_id)); |
| id_to_views_map_[animation_id].erase(view); |
| if (!id_to_views_map_[animation_id].empty()) |
| return false; |
| |
| id_to_views_map_.erase(animation_id); |
| return true; |
| } |
| |
| } // namespace view_manager |