| // Copyright (c) 2012 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 "ui/views/animation/bounds_animator.h" |
| |
| #include <memory> |
| #include <utility> |
| |
| #include "base/containers/contains.h" |
| #include "ui/gfx/animation/animation_container.h" |
| #include "ui/gfx/animation/slide_animation.h" |
| #include "ui/gfx/animation/tween.h" |
| #include "ui/gfx/transform_util.h" |
| #include "ui/views/animation/bounds_animator_observer.h" |
| #include "ui/views/view.h" |
| #include "ui/views/widget/widget.h" |
| |
| namespace views { |
| |
| BoundsAnimator::BoundsAnimator(View* parent, bool use_transforms) |
| : AnimationDelegateViews(parent), |
| parent_(parent), |
| use_transforms_(use_transforms), |
| container_(new gfx::AnimationContainer()) {} |
| |
| BoundsAnimator::~BoundsAnimator() { |
| // Delete all the animations, but don't remove any child views. We assume the |
| // view owns us and is going to be deleted anyway. However, deleting a |
| // delegate may results in removing a child view, so empty the data_ first so |
| // that it won't call AnimationCanceled(). |
| ViewToDataMap data; |
| data.swap(data_); |
| for (auto& entry : data) |
| CleanupData(false, &entry.second); |
| } |
| |
| void BoundsAnimator::AnimateViewTo( |
| View* view, |
| const gfx::Rect& target, |
| std::unique_ptr<gfx::AnimationDelegate> delegate) { |
| DCHECK(view); |
| DCHECK_EQ(view->parent(), parent_); |
| |
| const bool is_animating = IsAnimating(view); |
| |
| // Return early if the existing animation on |view| has the same target |
| // bounds. |
| if (is_animating && target == data_[view].target_bounds) |
| return; |
| |
| Data existing_data; |
| if (is_animating) { |
| DCHECK(base::Contains(data_, view)); |
| const bool used_transforms = data_[view].target_transform.has_value(); |
| if (used_transforms) { |
| // Using transforms means a view does not have the proper bounds until an |
| // animation is complete or canceled. So here we cancel the animation so |
| // that the bounds can be updated. Note that this means that callers who |
| // want to set bounds (i.e. View::SetBoundsRect()) directly before calling |
| // this function will have to explicitly call StopAnimatingView() before |
| // doing so. |
| StopAnimatingView(view); |
| } else { |
| // Don't immediately delete the animation, that might trigger a callback |
| // from the animation container. |
| existing_data = RemoveFromMaps(view); |
| } |
| } |
| |
| // NOTE: we don't check if the view is already at the target location. Doing |
| // so leads to odd cases where no animations may be present after invoking |
| // AnimateViewTo. AnimationProgressed does nothing when the bounds of the |
| // view don't change. |
| |
| Data& data = data_[view]; |
| data.start_bounds = view->bounds(); |
| data.target_bounds = target; |
| data.animation = CreateAnimation(); |
| data.delegate = std::move(delegate); |
| |
| // If the start bounds are empty we cannot derive a transform from start to |
| // target. Views with existing transforms are not supported. Default back to |
| // using the bounds update animation in these cases. |
| // Note that transform is not used if bounds animation requires scaling. |
| // Because for some views, their children cannot be scaled with the same scale |
| // factor. For example, ShelfAppButton's size in normal state and dense state |
| // is 56 and 48 respectively while the size of icon image, the child of |
| // ShelfAppButton, is 44 and 36 respectively. |
| if (use_transforms_ && !data.start_bounds.IsEmpty() && |
| view->GetTransform().IsIdentity() && |
| data.start_bounds.size() == data.target_bounds.size()) { |
| // Calculate the target transform. Note that we don't reset the transform if |
| // there already was one, otherwise users will end up with visual bounds |
| // different than what they set. |
| // Note that View::SetTransform() does not handle RTL, which is different |
| // from View::SetBounds(). So mirror the start bounds and target bounds |
| // manually if necessary. |
| const gfx::Transform target_transform = gfx::TransformBetweenRects( |
| gfx::RectF(parent_->GetMirroredRect(data.start_bounds)), |
| gfx::RectF(parent_->GetMirroredRect(data.target_bounds))); |
| data.target_transform = target_transform; |
| } |
| |
| animation_to_view_[data.animation.get()] = view; |
| |
| data.animation->Show(); |
| |
| CleanupData(true, &existing_data); |
| } |
| |
| void BoundsAnimator::SetTargetBounds(View* view, const gfx::Rect& target) { |
| const auto i = data_.find(view); |
| if (i == data_.end()) |
| AnimateViewTo(view, target); |
| else |
| i->second.target_bounds = target; |
| } |
| |
| gfx::Rect BoundsAnimator::GetTargetBounds(const View* view) const { |
| const auto i = data_.find(view); |
| return (i == data_.end()) ? view->bounds() : i->second.target_bounds; |
| } |
| |
| const gfx::SlideAnimation* BoundsAnimator::GetAnimationForView(View* view) { |
| const auto i = data_.find(view); |
| return (i == data_.end()) ? nullptr : i->second.animation.get(); |
| } |
| |
| void BoundsAnimator::SetAnimationDelegate( |
| View* view, |
| std::unique_ptr<AnimationDelegate> delegate) { |
| const auto i = data_.find(view); |
| DCHECK(i != data_.end()); |
| |
| i->second.delegate = std::move(delegate); |
| } |
| |
| void BoundsAnimator::StopAnimatingView(View* view) { |
| const auto i = data_.find(view); |
| if (i != data_.end()) |
| i->second.animation->Stop(); |
| } |
| |
| bool BoundsAnimator::IsAnimating(View* view) const { |
| return data_.find(view) != data_.end(); |
| } |
| |
| bool BoundsAnimator::IsAnimating() const { |
| return !data_.empty(); |
| } |
| |
| void BoundsAnimator::Cancel() { |
| if (data_.empty()) |
| return; |
| |
| while (!data_.empty()) |
| data_.begin()->second.animation->Stop(); |
| |
| // Invoke AnimationContainerProgressed to force a repaint and notify delegate. |
| AnimationContainerProgressed(container_.get()); |
| } |
| |
| void BoundsAnimator::SetAnimationDuration(base::TimeDelta duration) { |
| animation_duration_ = duration; |
| } |
| |
| void BoundsAnimator::AddObserver(BoundsAnimatorObserver* observer) { |
| observers_.AddObserver(observer); |
| } |
| |
| void BoundsAnimator::RemoveObserver(BoundsAnimatorObserver* observer) { |
| observers_.RemoveObserver(observer); |
| } |
| |
| std::unique_ptr<gfx::SlideAnimation> BoundsAnimator::CreateAnimation() { |
| auto animation = std::make_unique<gfx::SlideAnimation>(this); |
| animation->SetContainer(container_.get()); |
| animation->SetSlideDuration(animation_duration_); |
| animation->SetTweenType(tween_type_); |
| return animation; |
| } |
| |
| BoundsAnimator::Data::Data() = default; |
| BoundsAnimator::Data::Data(Data&&) = default; |
| BoundsAnimator::Data& BoundsAnimator::Data::operator=(Data&&) = default; |
| BoundsAnimator::Data::~Data() = default; |
| |
| BoundsAnimator::Data BoundsAnimator::RemoveFromMaps(View* view) { |
| const auto i = data_.find(view); |
| DCHECK(i != data_.end()); |
| DCHECK_GT(animation_to_view_.count(i->second.animation.get()), 0u); |
| |
| Data old_data = std::move(i->second); |
| data_.erase(view); |
| animation_to_view_.erase(old_data.animation.get()); |
| return old_data; |
| } |
| |
| void BoundsAnimator::CleanupData(bool send_cancel, Data* data) { |
| if (send_cancel && data->delegate) |
| data->delegate->AnimationCanceled(data->animation.get()); |
| |
| data->delegate.reset(); |
| |
| if (data->animation) { |
| data->animation->set_delegate(nullptr); |
| data->animation.reset(); |
| } |
| } |
| |
| std::unique_ptr<gfx::Animation> BoundsAnimator::ResetAnimationForView( |
| View* view) { |
| const auto i = data_.find(view); |
| if (i == data_.end()) |
| return nullptr; |
| |
| std::unique_ptr<gfx::Animation> old_animation = |
| std::move(i->second.animation); |
| animation_to_view_.erase(old_animation.get()); |
| // Reset the delegate so that we don't attempt any processing when the |
| // animation calls us back. |
| old_animation->set_delegate(nullptr); |
| return old_animation; |
| } |
| |
| void BoundsAnimator::AnimationEndedOrCanceled(const gfx::Animation* animation, |
| AnimationEndType type) { |
| DCHECK(animation_to_view_.find(animation) != animation_to_view_.end()); |
| |
| View* view = animation_to_view_[animation]; |
| DCHECK(view); |
| |
| // Save the data for later clean up. |
| Data data = RemoveFromMaps(view); |
| |
| if (data.target_transform) { |
| if (type == AnimationEndType::kEnded) { |
| // Set the bounds at the end of the animation and reset the transform. |
| view->SetBoundsRect(data.target_bounds); |
| } else { |
| DCHECK_EQ(AnimationEndType::kCanceled, type); |
| // Get the existing transform and apply it to the start bounds which is |
| // the current bounds of the view. This will place the bounds at the place |
| // where the animation stopped. |
| const gfx::Transform transform = view->GetTransform(); |
| gfx::RectF bounds_f(view->bounds()); |
| transform.TransformRect(&bounds_f); |
| view->SetBoundsRect(gfx::ToRoundedRect(bounds_f)); |
| } |
| view->SetTransform(gfx::Transform()); |
| } |
| |
| if (data.delegate) { |
| if (type == AnimationEndType::kEnded) { |
| data.delegate->AnimationEnded(animation); |
| } else { |
| DCHECK_EQ(AnimationEndType::kCanceled, type); |
| data.delegate->AnimationCanceled(animation); |
| } |
| } |
| |
| CleanupData(false, &data); |
| } |
| |
| void BoundsAnimator::AnimationProgressed(const gfx::Animation* animation) { |
| DCHECK(animation_to_view_.find(animation) != animation_to_view_.end()); |
| |
| View* view = animation_to_view_[animation]; |
| DCHECK(view); |
| const Data& data = data_[view]; |
| |
| if (data.target_transform) { |
| const gfx::Transform current_transform = gfx::Tween::TransformValueBetween( |
| animation->GetCurrentValue(), gfx::Transform(), *data.target_transform); |
| view->SetTransform(current_transform); |
| } else { |
| gfx::Rect new_bounds = |
| animation->CurrentValueBetween(data.start_bounds, data.target_bounds); |
| if (new_bounds != view->bounds()) { |
| gfx::Rect total_bounds = gfx::UnionRects(new_bounds, view->bounds()); |
| |
| // Build up the region to repaint in repaint_bounds_. We'll do the repaint |
| // when all animations complete (in AnimationContainerProgressed). |
| repaint_bounds_.Union(total_bounds); |
| |
| view->SetBoundsRect(new_bounds); |
| } |
| } |
| |
| if (data.delegate) |
| data.delegate->AnimationProgressed(animation); |
| } |
| |
| void BoundsAnimator::AnimationEnded(const gfx::Animation* animation) { |
| AnimationEndedOrCanceled(animation, AnimationEndType::kEnded); |
| } |
| |
| void BoundsAnimator::AnimationCanceled(const gfx::Animation* animation) { |
| AnimationEndedOrCanceled(animation, AnimationEndType::kCanceled); |
| } |
| |
| void BoundsAnimator::AnimationContainerProgressed( |
| gfx::AnimationContainer* container) { |
| if (!repaint_bounds_.IsEmpty()) { |
| // Adjust for rtl. |
| repaint_bounds_.set_x(parent_->GetMirroredXWithWidthInView( |
| repaint_bounds_.x(), repaint_bounds_.width())); |
| parent_->SchedulePaintInRect(repaint_bounds_); |
| repaint_bounds_.SetRect(0, 0, 0, 0); |
| } |
| |
| for (BoundsAnimatorObserver& observer : observers_) |
| observer.OnBoundsAnimatorProgressed(this); |
| |
| if (!IsAnimating()) { |
| // Notify here rather than from AnimationXXX to avoid deleting the animation |
| // while the animation is calling us. |
| for (BoundsAnimatorObserver& observer : observers_) |
| observer.OnBoundsAnimatorDone(this); |
| } |
| } |
| |
| void BoundsAnimator::AnimationContainerEmpty( |
| gfx::AnimationContainer* container) {} |
| |
| void BoundsAnimator::OnChildViewRemoved(views::View* observed_view, |
| views::View* removed) { |
| DCHECK_EQ(parent_, observed_view); |
| const auto iter = data_.find(removed); |
| if (iter == data_.end()) |
| return; |
| AnimationCanceled(iter->second.animation.get()); |
| } |
| |
| base::TimeDelta BoundsAnimator::GetAnimationDurationForReporting() const { |
| return GetAnimationDuration(); |
| } |
| |
| } // namespace views |