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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/wm/shelf_layout_manager.h"
#include "ash/launcher/launcher.h"
#include "ash/shell.h"
#include "base/auto_reset.h"
#include "ui/aura/root_window.h"
#include "ui/aura/screen_aura.h"
#include "ui/gfx/compositor/layer.h"
#include "ui/gfx/compositor/layer_animation_observer.h"
#include "ui/gfx/compositor/layer_animator.h"
#include "ui/gfx/compositor/scoped_layer_animation_settings.h"
#include "ui/views/widget/widget.h"
namespace ash {
namespace internal {
namespace {
ui::Layer* GetLayer(views::Widget* widget) {
return widget->GetNativeView()->layer();
}
} // namespace
////////////////////////////////////////////////////////////////////////////////
// ShelfLayoutManager, public:
ShelfLayoutManager::ShelfLayoutManager(views::Widget* launcher,
views::Widget* status)
: in_layout_(false),
visible_(true),
max_height_(-1),
launcher_(launcher),
status_(status) {
gfx::Rect launcher_bounds = launcher->GetWindowScreenBounds();
gfx::Rect status_bounds = status->GetWindowScreenBounds();
max_height_ = std::max(launcher_bounds.height(), status_bounds.height());
}
ShelfLayoutManager::~ShelfLayoutManager() {
// Without a shelf we don't need special insets anymore.
aura::RootWindow::GetInstance()->
screen()->set_work_area_insets(gfx::Insets());
}
void ShelfLayoutManager::LayoutShelf() {
AutoReset<bool> auto_reset_in_layout(&in_layout_, true);
StopAnimating();
TargetBounds target_bounds;
float target_opacity = visible_ ? 1.0f : 0.0f;
CalculateTargetBounds(visible_, &target_bounds);
GetLayer(launcher_)->SetOpacity(target_opacity);
GetLayer(status_)->SetOpacity(target_opacity);
launcher_->SetBounds(target_bounds.launcher_bounds);
status_->SetBounds(target_bounds.status_bounds);
Shell::GetInstance()->launcher()->SetStatusWidth(
target_bounds.status_bounds.width());
aura::RootWindow::GetInstance()->screen()->set_work_area_insets(
target_bounds.work_area_insets);
}
void ShelfLayoutManager::SetVisible(bool visible) {
ui::Layer* launcher_layer = GetLayer(launcher_);
ui::Layer* status_layer = GetLayer(status_);
// TODO(vollick): once visibility is animatable, use GetTargetVisibility.
bool current_visibility = visible_ &&
launcher_layer->GetTargetOpacity() > 0.0f &&
status_layer->GetTargetOpacity() > 0.0f;
if (visible == current_visibility)
return; // Nothing changed.
StopAnimating();
visible_ = visible;
TargetBounds target_bounds;
float target_opacity = visible ? 1.0f : 0.0f;
CalculateTargetBounds(visible, &target_bounds);
ui::ScopedLayerAnimationSettings launcher_animation_setter(
launcher_layer->GetAnimator());
ui::ScopedLayerAnimationSettings status_animation_setter(
status_layer->GetAnimator());
launcher_animation_setter.AddObserver(this);
status_animation_setter.AddObserver(this);
launcher_layer->SetBounds(target_bounds.launcher_bounds);
launcher_layer->SetOpacity(target_opacity);
status_layer->SetBounds(target_bounds.status_bounds);
status_layer->SetOpacity(target_opacity);
}
////////////////////////////////////////////////////////////////////////////////
// ShelfLayoutManager, aura::LayoutManager implementation:
void ShelfLayoutManager::OnWindowResized() {
LayoutShelf();
}
void ShelfLayoutManager::OnWindowAddedToLayout(aura::Window* child) {
}
void ShelfLayoutManager::OnWillRemoveWindowFromLayout(aura::Window* child) {
}
void ShelfLayoutManager::OnChildWindowVisibilityChanged(aura::Window* child,
bool visible) {
}
void ShelfLayoutManager::SetChildBounds(aura::Window* child,
const gfx::Rect& requested_bounds) {
SetChildBoundsDirect(child, requested_bounds);
if (!in_layout_)
LayoutShelf();
}
////////////////////////////////////////////////////////////////////////////////
// ShelfLayoutManager, private:
void ShelfLayoutManager::StopAnimating() {
StopObservingImplicitAnimations();
GetLayer(launcher_)->GetAnimator()->StopAnimating();
GetLayer(status_)->GetAnimator()->StopAnimating();
}
void ShelfLayoutManager::CalculateTargetBounds(bool visible,
TargetBounds* target_bounds) {
const gfx::Rect& available_bounds(aura::RootWindow::GetInstance()->bounds());
int y = available_bounds.bottom() - (visible ? max_height_ : 0);
gfx::Rect status_bounds(status_->GetWindowScreenBounds());
target_bounds->status_bounds = gfx::Rect(
available_bounds.right() - status_bounds.width(),
y + (max_height_ - status_bounds.height()) / 2,
status_bounds.width(), status_bounds.height());
gfx::Rect launcher_bounds(launcher_->GetWindowScreenBounds());
target_bounds->launcher_bounds = gfx::Rect(
available_bounds.x(), y + (max_height_ - launcher_bounds.height()) / 2,
available_bounds.width(),
launcher_bounds.height());
if (visible)
target_bounds->work_area_insets = gfx::Insets(0, 0, max_height_, 0);
}
void ShelfLayoutManager::OnImplicitAnimationsCompleted() {
TargetBounds target_bounds;
CalculateTargetBounds(visible_, &target_bounds);
aura::RootWindow::GetInstance()->screen()->set_work_area_insets(
target_bounds.work_area_insets);
}
} // namespace internal
} // namespace ash
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