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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/launcher/launcher.h"
#include "ash/focus_cycler.h"
#include "ash/launcher/launcher_delegate.h"
#include "ash/launcher/launcher_model.h"
#include "ash/launcher/launcher_navigator.h"
#include "ash/launcher/launcher_view.h"
#include "ash/shell.h"
#include "ash/shell_delegate.h"
#include "ash/shell_window_ids.h"
#include "ash/wm/shelf_layout_manager.h"
#include "ui/aura/window.h"
#include "ui/compositor/layer.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/image/image.h"
#include "ui/views/accessible_pane_view.h"
#include "ui/views/widget/widget.h"
#include "ui/views/widget/widget_delegate.h"
namespace ash {
namespace {
// Max alpha of the background.
const int kBackgroundAlpha = 128;
}
// The contents view of the Widget. This view contains LauncherView and
// sizes it to the width of the widget minus the size of the status area.
class Launcher::DelegateView : public views::WidgetDelegate,
public views::AccessiblePaneView{
public:
explicit DelegateView(Launcher* launcher);
virtual ~DelegateView();
void set_focus_cycler(internal::FocusCycler* focus_cycler) {
focus_cycler_ = focus_cycler;
}
internal::FocusCycler* focus_cycler() {
return focus_cycler_;
}
// views::View overrides
virtual gfx::Size GetPreferredSize() OVERRIDE;
virtual void Layout() OVERRIDE;
// views::WidgetDelegateView overrides:
virtual views::Widget* GetWidget() OVERRIDE {
return View::GetWidget();
}
virtual const views::Widget* GetWidget() const OVERRIDE {
return View::GetWidget();
}
virtual bool CanActivate() const OVERRIDE {
// We don't want mouse clicks to activate us, but we need to allow
// activation when the user is using the keyboard (FocusCycler).
return focus_cycler_ && focus_cycler_->widget_activating() == GetWidget();
}
private:
Launcher* launcher_;
internal::FocusCycler* focus_cycler_;
DISALLOW_COPY_AND_ASSIGN(DelegateView);
};
Launcher::DelegateView::DelegateView(Launcher* launcher)
: launcher_(launcher),
focus_cycler_(NULL) {
}
Launcher::DelegateView::~DelegateView() {
}
gfx::Size Launcher::DelegateView::GetPreferredSize() {
return child_count() > 0 ? child_at(0)->GetPreferredSize() : gfx::Size();
}
void Launcher::DelegateView::Layout() {
if (child_count() == 0)
return;
if (launcher_->alignment_ == SHELF_ALIGNMENT_BOTTOM) {
int w = std::max(0, width() - launcher_->status_size_.width());
child_at(0)->SetBounds(0, 0, w, height());
} else {
int h = std::max(0, height() - launcher_->status_size_.height());
child_at(0)->SetBounds(0, 0, width(), h);
}
}
// Launcher --------------------------------------------------------------------
Launcher::Launcher(aura::Window* window_container)
: widget_(NULL),
window_container_(window_container),
delegate_view_(NULL),
launcher_view_(NULL),
alignment_(SHELF_ALIGNMENT_BOTTOM),
ALLOW_THIS_IN_INITIALIZER_LIST(
background_animator_(this, 0, kBackgroundAlpha)) {
model_.reset(new LauncherModel);
if (Shell::GetInstance()->delegate()) {
delegate_.reset(
Shell::GetInstance()->delegate()->CreateLauncherDelegate(model_.get()));
}
widget_.reset(new views::Widget);
views::Widget::InitParams params(
views::Widget::InitParams::TYPE_WINDOW_FRAMELESS);
// The launcher only ever draws a solid color.
params.layer_type = ui::LAYER_SOLID_COLOR;
params.transparent = true;
params.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
params.parent = Shell::GetInstance()->GetContainer(
ash::internal::kShellWindowId_LauncherContainer);
launcher_view_ = new internal::LauncherView(model_.get(), delegate_.get());
launcher_view_->Init();
delegate_view_ = new DelegateView(this);
delegate_view_->AddChildView(launcher_view_);
params.delegate = delegate_view_;
widget_->Init(params);
widget_->GetNativeWindow()->SetName("LauncherWindow");
gfx::Size pref =
static_cast<views::View*>(launcher_view_)->GetPreferredSize();
widget_->SetBounds(gfx::Rect(pref));
// The launcher should not take focus when it is initially shown.
widget_->set_focus_on_creation(false);
widget_->SetContentsView(delegate_view_);
widget_->Show();
widget_->GetNativeView()->SetName("LauncherView");
}
Launcher::~Launcher() {
}
void Launcher::SetFocusCycler(internal::FocusCycler* focus_cycler) {
delegate_view_->set_focus_cycler(focus_cycler);
focus_cycler->AddWidget(widget_.get());
}
internal::FocusCycler* Launcher::GetFocusCycler() {
return delegate_view_->focus_cycler();
}
void Launcher::SetAlignment(ShelfAlignment alignment) {
alignment_ = alignment;
launcher_view_->SetAlignment(alignment);
// ShelfLayoutManager will resize the launcher.
}
void Launcher::SetPaintsBackground(
bool value,
internal::BackgroundAnimator::ChangeType change_type) {
background_animator_.SetPaintsBackground(value, change_type);
}
void Launcher::SetStatusSize(const gfx::Size& size) {
if (status_size_ == size)
return;
status_size_ = size;
delegate_view_->Layout();
}
gfx::Rect Launcher::GetScreenBoundsOfItemIconForWindow(aura::Window* window) {
if (!delegate_.get())
return gfx::Rect();
LauncherID id = delegate_->GetIDByWindow(window);
gfx::Rect bounds(launcher_view_->GetIdealBoundsOfItemIcon(id));
if (bounds.IsEmpty())
return bounds;
gfx::Point screen_origin;
views::View::ConvertPointToScreen(launcher_view_, &screen_origin);
return gfx::Rect(screen_origin.x() + bounds.x(),
screen_origin.y() + bounds.y(),
bounds.width(),
bounds.height());
}
void Launcher::ActivateLauncherItem(int index) {
DCHECK(delegate_.get());
const ash::LauncherItems& items = model_->items();
delegate_->ItemClicked(items[index], ui::EF_NONE);
}
void Launcher::CycleWindowLinear(CycleDirection direction) {
int item_index = GetNextActivatedItemIndex(*model(), direction);
if (item_index >= 0)
ActivateLauncherItem(item_index);
}
void Launcher::AddIconObserver(LauncherIconObserver* observer) {
launcher_view_->AddIconObserver(observer);
}
void Launcher::RemoveIconObserver(LauncherIconObserver* observer) {
launcher_view_->RemoveIconObserver(observer);
}
bool Launcher::IsShowingMenu() const {
return launcher_view_->IsShowingMenu();
}
views::View* Launcher::GetAppListButtonView() const {
return launcher_view_->GetAppListButtonView();
}
internal::LauncherView* Launcher::GetLauncherViewForTest() {
return launcher_view_;
}
void Launcher::UpdateBackground(int alpha) {
ui::Layer* layer = widget_->GetNativeView()->layer();
layer->SetColor(SkColorSetARGB(alpha, 0, 0, 0));
}
} // namespace ash
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