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// Copyright (c) 2011 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/gfx/compositor/layer_animation_element.h"
#include "base/compiler_specific.h"
#include "ui/base/animation/tween.h"
#include "ui/gfx/compositor/layer_animation_delegate.h"
namespace ui {
namespace {
// Pause -----------------------------------------------------------------------
class Pause : public LayerAnimationElement {
public:
Pause(const AnimatableProperties& properties, base::TimeDelta duration)
: LayerAnimationElement(properties, duration) {
}
virtual ~Pause() {}
private:
virtual void OnStart(LayerAnimationDelegate* delegate) OVERRIDE {}
virtual void OnProgress(double t,
LayerAnimationDelegate* delegate) OVERRIDE {}
virtual void OnGetTarget(TargetValue* target) const OVERRIDE {}
virtual void OnAbort() OVERRIDE {}
DISALLOW_COPY_AND_ASSIGN(Pause);
};
// TransformTransition ---------------------------------------------------------
class TransformTransition : public LayerAnimationElement {
public:
TransformTransition(const Transform& target, base::TimeDelta duration)
: LayerAnimationElement(GetProperties(), duration),
target_(target) {
}
virtual ~TransformTransition() {}
protected:
virtual void OnStart(LayerAnimationDelegate* delegate) OVERRIDE {
start_ = delegate->GetTransformForAnimation();
}
virtual void OnProgress(double t, LayerAnimationDelegate* delegate) OVERRIDE {
delegate->SetTransformFromAnimation(
Tween::ValueBetween(t, start_, target_));
}
virtual void OnGetTarget(TargetValue* target) const OVERRIDE {
target->transform = target_;
}
virtual void OnAbort() OVERRIDE {}
private:
static const AnimatableProperties& GetProperties() {
static AnimatableProperties properties;
if (properties.size() == 0)
properties.insert(LayerAnimationElement::TRANSFORM);
return properties;
}
Transform start_;
const Transform target_;
DISALLOW_COPY_AND_ASSIGN(TransformTransition);
};
// BoundsTransition ------------------------------------------------------------
class BoundsTransition : public LayerAnimationElement {
public:
BoundsTransition(const gfx::Rect& target, base::TimeDelta duration)
: LayerAnimationElement(GetProperties(), duration),
target_(target) {
}
virtual ~BoundsTransition() {}
protected:
virtual void OnStart(LayerAnimationDelegate* delegate) OVERRIDE {
start_ = delegate->GetBoundsForAnimation();
}
virtual void OnProgress(double t, LayerAnimationDelegate* delegate) OVERRIDE {
delegate->SetBoundsFromAnimation(Tween::ValueBetween(t, start_, target_));
}
virtual void OnGetTarget(TargetValue* target) const OVERRIDE {
target->bounds = target_;
}
virtual void OnAbort() OVERRIDE {}
private:
static const AnimatableProperties& GetProperties() {
static AnimatableProperties properties;
if (properties.size() == 0)
properties.insert(LayerAnimationElement::BOUNDS);
return properties;
}
gfx::Rect start_;
const gfx::Rect target_;
DISALLOW_COPY_AND_ASSIGN(BoundsTransition);
};
class OpacityTransition : public LayerAnimationElement {
public:
OpacityTransition(float target, base::TimeDelta duration)
: LayerAnimationElement(GetProperties(), duration),
target_(target) {
}
virtual ~OpacityTransition() {}
protected:
virtual void OnStart(LayerAnimationDelegate* delegate) OVERRIDE {
start_ = delegate->GetOpacityForAnimation();
}
virtual void OnProgress(double t, LayerAnimationDelegate* delegate) OVERRIDE {
delegate->SetOpacityFromAnimation(Tween::ValueBetween(t, start_, target_));
}
virtual void OnGetTarget(TargetValue* target) const OVERRIDE {
target->opacity = target_;
}
virtual void OnAbort() OVERRIDE {}
private:
static const AnimatableProperties& GetProperties() {
static AnimatableProperties properties;
if (properties.size() == 0)
properties.insert(LayerAnimationElement::OPACITY);
return properties;
}
float start_;
const float target_;
DISALLOW_COPY_AND_ASSIGN(OpacityTransition);
};
} // namespace
// LayerAnimationElement::TargetValue ------------------------------------------
LayerAnimationElement::TargetValue::TargetValue() : opacity(0.0f) {
}
// LayerAnimationElement -------------------------------------------------------
LayerAnimationElement::LayerAnimationElement(
const AnimatableProperties& properties,
base::TimeDelta duration)
: first_frame_(true),
properties_(properties),
duration_(duration) {
}
LayerAnimationElement::~LayerAnimationElement() {
}
void LayerAnimationElement::Progress(double t,
LayerAnimationDelegate* delegate) {
if (first_frame_)
OnStart(delegate);
OnProgress(t, delegate);
delegate->ScheduleDrawForAnimation();
first_frame_ = t == 1.0;
}
void LayerAnimationElement::GetTargetValue(TargetValue* target) const {
OnGetTarget(target);
}
void LayerAnimationElement::Abort() {
first_frame_ = true;
OnAbort();
}
// static
LayerAnimationElement* LayerAnimationElement::CreateTransformElement(
const Transform& transform, base::TimeDelta duration) {
return new TransformTransition(transform, duration);
}
// static
LayerAnimationElement* LayerAnimationElement::CreateBoundsElement(
const gfx::Rect& bounds, base::TimeDelta duration) {
return new BoundsTransition(bounds, duration);
}
// static
LayerAnimationElement* LayerAnimationElement::CreateOpacityElement(
float opacity, base::TimeDelta duration) {
return new OpacityTransition(opacity, duration);
}
// static
LayerAnimationElement* LayerAnimationElement::CreatePauseElement(
const AnimatableProperties& properties, base::TimeDelta duration) {
return new Pause(properties, duration);
}
} // namespace ui
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