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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_VIEWS_ANIMATION_FLOOD_FILL_INK_DROP_RIPPLE_H_
#define UI_VIEWS_ANIMATION_FLOOD_FILL_INK_DROP_RIPPLE_H_
#include "base/callback_list.h"
#include "base/time/time.h"
#include "third_party/skia/include/core/SkColor.h"
#include "ui/compositor/layer.h"
#include "ui/compositor/layer_animator.h"
#include "ui/gfx/animation/tween.h"
#include "ui/gfx/geometry/insets.h"
#include "ui/gfx/geometry/point.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/geometry/transform.h"
#include "ui/views/animation/ink_drop_painted_layer_delegates.h"
#include "ui/views/animation/ink_drop_ripple.h"
#include "ui/views/animation/ink_drop_state.h"
#include "ui/views/views_export.h"
namespace ui {
class Layer;
} // namespace ui
namespace views {
class CircleLayerDelegate;
class InkDropHost;
namespace test {
class FloodFillInkDropRippleTestApi;
} // namespace test
// An ink drop ripple that starts as a small circle and flood fills a rectangle
// of the size determined by |host_size| and |clip_insets| (if provided). The
// circle is clipped to this rectangle's bounds.
// Constructors take |host_size| and |clip_insets| and calculate the effective
// bounds of the flood fill based on them. This way, the ripple's bounds are
// defined relative to the host size and can be recalculated whenever the host
// size is changed.
//
// The valid InkDropState transitions are defined below:
//
// {All InkDropStates} => HIDDEN
// HIDDEN => ACTION_PENDING
// HIDDEN, ACTION_PENDING => ACTION_TRIGGERED
// ACTION_PENDING => ALTERNATE_ACTION_PENDING
// ALTERNATE_ACTION_PENDING => ALTERNATE_ACTION_TRIGGERED
// {All InkDropStates} => ACTIVATED
// {All InkDropStates} => DEACTIVATED
//
class VIEWS_EXPORT FloodFillInkDropRipple : public InkDropRipple {
public:
FloodFillInkDropRipple(InkDropHost* ink_drop_host,
const gfx::Size& host_size,
const gfx::Insets& clip_insets,
const gfx::Point& center_point,
SkColor color,
float visible_opacity);
FloodFillInkDropRipple(InkDropHost* ink_drop_host,
const gfx::Size& host_size,
const gfx::Point& center_point,
SkColor color,
float visible_opacity);
FloodFillInkDropRipple(const FloodFillInkDropRipple&) = delete;
FloodFillInkDropRipple& operator=(const FloodFillInkDropRipple&) = delete;
~FloodFillInkDropRipple() override;
// InkDropRipple:
ui::Layer* GetRootLayer() override;
void set_use_hide_transform_duration_for_hide_fade_out(bool value) {
use_hide_transform_duration_for_hide_fade_out_ = value;
}
void set_duration_factor(float duration_factor) {
duration_factor_ = duration_factor;
}
private:
friend class test::FloodFillInkDropRippleTestApi;
// All the sub animations that are used to animate each of the InkDropStates.
// These are used to get time durations with
// GetAnimationDuration(InkDropSubAnimations). Note that in general a sub
// animation defines the duration for either a transformation animation or an
// opacity animation but there are some exceptions where an entire
// InkDropState animation consists of only 1 sub animation and it defines the
// duration for both the transformation and opacity animations.
enum AnimationSubState {
// HIDDEN sub animations.
// The HIDDEN sub animation that is fading out to a hidden opacity.
HIDDEN_FADE_OUT,
// The HIDDEN sub animation that transform the circle to a small one.
HIDDEN_TRANSFORM,
// ACTION_PENDING sub animations.
// The ACTION_PENDING sub animation that fades in to the visible opacity.
ACTION_PENDING_FADE_IN,
// The ACTION_PENDING sub animation that transforms the circle to fill the
// bounds.
ACTION_PENDING_TRANSFORM,
// ACTION_TRIGGERED sub animations.
// The ACTION_TRIGGERED sub animation that is fading out to a hidden
// opacity.
ACTION_TRIGGERED_FADE_OUT,
// ALTERNATE_ACTION_PENDING sub animations.
// The ALTERNATE_ACTION_PENDING animation has only one sub animation which
// animates
// the circleto fill the bounds at visible opacity.
ALTERNATE_ACTION_PENDING,
// ALTERNATE_ACTION_TRIGGERED sub animations.
// The ALTERNATE_ACTION_TRIGGERED sub animation that is fading out to a
// hidden opacity.
ALTERNATE_ACTION_TRIGGERED_FADE_OUT,
// ACTIVATED sub animations.
// The ACTIVATED sub animation that is fading in to the visible opacity.
ACTIVATED_FADE_IN,
// The ACTIVATED sub animation that transforms the circle to fill the entire
// bounds.
ACTIVATED_TRANSFORM,
// DEACTIVATED sub animations.
// The DEACTIVATED sub animation that is fading out to a hidden opacity.
DEACTIVATED_FADE_OUT,
};
// InkDropRipple:
void AnimateStateChange(InkDropState old_ink_drop_state,
InkDropState new_ink_drop_state) override;
void SetStateToActivated() override;
void SetStateToHidden() override;
void AbortAllAnimations() override;
// Sets the opacity of the ink drop. Note that this does not perform any
// animation.
void SetOpacity(float opacity);
// Returns the Transform to be applied to the |painted_layer_| for the given
// |target_radius|.
gfx::Transform CalculateTransform(float target_radius) const;
// Returns the target Transform for when the ink drop is fully shown.
gfx::Transform GetMaxSizeTargetTransform() const;
// Returns the largest distance from |point| to the corners of the
// |root_layer_| bounds.
float MaxDistanceToCorners(const gfx::Point& point) const;
// Returns the InkDropState sub animation duration for the given |state|.
base::TimeDelta GetAnimationDuration(AnimationSubState state);
// Called from LayerAnimator when a new LayerAnimationSequence is scheduled
// which allows for assigning the observer to the sequence.
void OnLayerAnimationSequenceScheduled(ui::LayerAnimationSequence* sequence);
// Insets of the clip area relative to the host bounds.
gfx::Insets clip_insets_;
// The point where the Center of the ink drop's circle should be drawn.
gfx::Point center_point_;
// Ink drop opacity when it is visible.
float visible_opacity_;
// Whether the fade out animation to hidden state should have the same
// duration as the associated scale transform animation.
bool use_hide_transform_duration_for_hide_fade_out_;
// The factor used to scale down/up animation duration.
float duration_factor_;
// The root layer that parents the animating layer. The root layer is used to
// manipulate opacity and clipping bounds, and it child is used to manipulate
// the different shape of the ink drop.
ui::Layer root_layer_;
// Sequence scheduled callback subscription for the root layer.
base::CallbackListSubscription root_callback_subscription_;
// ui::LayerDelegate to paint the |painted_layer_|.
CircleLayerDelegate circle_layer_delegate_;
// Child ui::Layer of |root_layer_|. Used to manipulate the different size
// and shape of the ink drop.
ui::Layer painted_layer_;
// Sequence scheduled callback subscriptions for the painted layer.
base::CallbackListSubscription painted_layer_callback_subscription_;
// The current ink drop state.
InkDropState ink_drop_state_ = InkDropState::HIDDEN;
};
} // namespace views
#endif // UI_VIEWS_ANIMATION_FLOOD_FILL_INK_DROP_RIPPLE_H_
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