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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef ASH_SHELF_HOME_BUTTON_TAP_OVERLAY_H_
#define ASH_SHELF_HOME_BUTTON_TAP_OVERLAY_H_
#include <memory>
#include "ash/ash_export.h"
#include "ash/shelf/home_button.h"
#include "base/memory/raw_ptr.h"
#include "ui/base/metadata/metadata_header_macros.h"
#include "ui/compositor/layer_animation_observer.h"
#include "ui/views/animation/ink_drop_painted_layer_delegates.h"
#include "ui/views/view.h"
namespace ash {
// Overlay to display animations when the home button is tapped (with a touch
// screen).
// Used for features like Assistant.
class ASH_EXPORT HomeButtonTapOverlay : public views::View,
public ui::ImplicitAnimationObserver {
METADATA_HEADER(HomeButtonTapOverlay, views::View)
public:
explicit HomeButtonTapOverlay(HomeButton* host_view);
HomeButtonTapOverlay(const HomeButtonTapOverlay&) = delete;
HomeButtonTapOverlay& operator=(const HomeButtonTapOverlay&) = delete;
~HomeButtonTapOverlay() override;
void StartAnimation();
void EndAnimation();
void BurstAnimation();
void HideAnimation();
bool IsBursting() const {
return AnimationState::BURSTING == animation_state_;
}
bool IsHidden() const { return AnimationState::HIDDEN == animation_state_; }
// views::View:
void OnThemeChanged() override;
// ui::ImplicitAnimationObserver
void OnImplicitAnimationsCompleted() override;
private:
enum class AnimationState {
// Indicates no animation is playing.
HIDDEN = 0,
// Indicates currently playing the starting animation.
STARTING,
// Indicates the current animation is in the bursting phase, which means no
// turning back.
BURSTING
};
std::unique_ptr<ui::Layer> ripple_layer_;
raw_ptr<HomeButton> host_view_;
AnimationState animation_state_ = AnimationState::HIDDEN;
views::CircleLayerDelegate circle_layer_delegate_;
std::unique_ptr<HomeButton::ScopedNoClipRect> scoped_no_clip_rect_;
};
} // namespace ash
#endif // ASH_SHELF_HOME_BUTTON_TAP_OVERLAY_H_
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