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// 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 "ash/desktop_background/desktop_background_widget_controller.h"
#include "ash/ash_export.h"
#include "ash/desktop_background/user_wallpaper_delegate.h"
#include "ash/root_window_controller.h"
#include "ash/shell.h"
#include "ui/aura/window_event_dispatcher.h"
#include "ui/compositor/layer_animation_observer.h"
#include "ui/compositor/scoped_layer_animation_settings.h"
#include "ui/views/widget/widget.h"
#include "ui/views/widget/widget_observer.h"
namespace ash {
namespace {
class ShowWallpaperAnimationObserver : public ui::ImplicitAnimationObserver,
public views::WidgetObserver {
public:
ShowWallpaperAnimationObserver(RootWindowController* root_window_controller,
views::Widget* desktop_widget,
bool is_initial_animation)
: root_window_controller_(root_window_controller),
desktop_widget_(desktop_widget),
is_initial_animation_(is_initial_animation) {
DCHECK(desktop_widget_);
desktop_widget_->AddObserver(this);
}
virtual ~ShowWallpaperAnimationObserver() {
StopObservingImplicitAnimations();
if (desktop_widget_)
desktop_widget_->RemoveObserver(this);
}
private:
// Overridden from ui::ImplicitAnimationObserver:
virtual void OnImplicitAnimationsScheduled() OVERRIDE {
if (is_initial_animation_) {
root_window_controller_->
HandleInitialDesktopBackgroundAnimationStarted();
}
}
virtual void OnImplicitAnimationsCompleted() OVERRIDE {
root_window_controller_->OnWallpaperAnimationFinished(desktop_widget_);
delete this;
}
// Overridden from views::WidgetObserver.
virtual void OnWidgetDestroying(views::Widget* widget) OVERRIDE {
delete this;
}
RootWindowController* root_window_controller_;
views::Widget* desktop_widget_;
// Is this object observing the initial brightness/grayscale animation?
const bool is_initial_animation_;
DISALLOW_COPY_AND_ASSIGN(ShowWallpaperAnimationObserver);
};
} // namespace
DesktopBackgroundWidgetController::DesktopBackgroundWidgetController(
views::Widget* widget) : widget_(widget) {
DCHECK(widget_);
widget_->AddObserver(this);
}
DesktopBackgroundWidgetController::~DesktopBackgroundWidgetController() {
if (widget_) {
widget_->RemoveObserver(this);
widget_->CloseNow();
widget_ = NULL;
}
}
void DesktopBackgroundWidgetController::OnWidgetDestroying(
views::Widget* widget) {
widget_->RemoveObserver(this);
widget_ = NULL;
}
void DesktopBackgroundWidgetController::SetBounds(gfx::Rect bounds) {
if (widget_)
widget_->SetBounds(bounds);
}
bool DesktopBackgroundWidgetController::Reparent(aura::Window* root_window,
int src_container,
int dest_container) {
if (widget_) {
views::Widget::ReparentNativeView(widget_->GetNativeView(),
root_window->GetChildById(dest_container));
return true;
}
// Nothing to reparent.
return false;
}
void DesktopBackgroundWidgetController::StartAnimating(
RootWindowController* root_window_controller) {
if (widget_) {
ui::ScopedLayerAnimationSettings settings(
widget_->GetNativeView()->layer()->GetAnimator());
settings.AddObserver(new ShowWallpaperAnimationObserver(
root_window_controller, widget_,
Shell::GetInstance()->user_wallpaper_delegate()->
ShouldShowInitialAnimation()));
// When |widget_| shows, AnimateShowWindowCommon() is called to do the
// animation. Sets transition duration to 0 to avoid animating to the
// show animation's initial values.
settings.SetTransitionDuration(base::TimeDelta());
widget_->Show();
widget_->GetNativeView()->SetName("DesktopBackgroundView");
}
}
AnimatingDesktopController::AnimatingDesktopController(
DesktopBackgroundWidgetController* component) {
controller_.reset(component);
}
AnimatingDesktopController::~AnimatingDesktopController() {
}
void AnimatingDesktopController::StopAnimating() {
if (controller_) {
ui::Layer* layer = controller_->widget()->GetNativeView()->layer();
layer->GetAnimator()->StopAnimating();
}
}
DesktopBackgroundWidgetController* AnimatingDesktopController::GetController(
bool pass_ownership) {
if (pass_ownership)
return controller_.release();
return controller_.get();
}
} // namespace ash
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