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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/session_state_delegate.h"
#include "ash/shell.h"
#include "ash/shell_window_ids.h"
#include "ash/shell/example_factory.h"
#include "base/strings/utf_string_conversions.h"
#include "ui/aura/root_window.h"
#include "ui/aura/window.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/font.h"
#include "ui/views/controls/button/label_button.h"
#include "ui/views/corewm/tooltip_controller.h"
#include "ui/views/widget/widget.h"
#include "ui/views/widget/widget_delegate.h"
using ash::Shell;
namespace ash {
namespace shell {
class LockView : public views::WidgetDelegateView,
public views::ButtonListener {
public:
LockView()
: unlock_button_(new views::LabelButton(this, ASCIIToUTF16("Unlock"))) {
unlock_button_->SetStyle(views::Button::STYLE_NATIVE_TEXTBUTTON);
AddChildView(unlock_button_);
unlock_button_->SetFocusable(true);
}
virtual ~LockView() {}
// Overridden from views::View:
virtual gfx::Size GetPreferredSize() OVERRIDE {
return gfx::Size(500, 400);
}
private:
// Overridden from views::View:
virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE {
canvas->FillRect(GetLocalBounds(), SK_ColorYELLOW);
base::string16 text = ASCIIToUTF16("LOCKED!");
int string_width = font_.GetStringWidth(text);
canvas->DrawStringInt(text, font_, SK_ColorRED, (width() - string_width)/ 2,
(height() - font_.GetHeight()) / 2,
string_width, font_.GetHeight());
}
virtual void Layout() OVERRIDE {
gfx::Rect bounds = GetLocalBounds();
gfx::Size ps = unlock_button_->GetPreferredSize();
bounds.set_y(bounds.bottom() - ps.height() - 5);
bounds.set_x((bounds.width() - ps.width()) / 2);
bounds.set_size(ps);
unlock_button_->SetBoundsRect(bounds);
}
virtual void ViewHierarchyChanged(
const ViewHierarchyChangedDetails& details) OVERRIDE {
if (details.is_add && details.child == this)
unlock_button_->RequestFocus();
}
// Overridden from views::WidgetDelegateView:
virtual void WindowClosing() OVERRIDE {
Shell::GetInstance()->session_state_delegate()->UnlockScreen();
}
// Overridden from views::ButtonListener:
virtual void ButtonPressed(views::Button* sender,
const ui::Event& event) OVERRIDE {
DCHECK(sender == unlock_button_);
GetWidget()->Close();
}
gfx::Font font_;
views::LabelButton* unlock_button_;
DISALLOW_COPY_AND_ASSIGN(LockView);
};
void CreateLockScreen() {
LockView* lock_view = new LockView;
views::Widget* widget = new views::Widget;
views::Widget::InitParams params(
views::Widget::InitParams::TYPE_WINDOW_FRAMELESS);
gfx::Size ps = lock_view->GetPreferredSize();
gfx::Size root_window_size = Shell::GetPrimaryRootWindow()->bounds().size();
params.bounds = gfx::Rect((root_window_size.width() - ps.width()) / 2,
(root_window_size.height() - ps.height()) / 2,
ps.width(), ps.height());
params.delegate = lock_view;
params.parent = Shell::GetContainer(
Shell::GetPrimaryRootWindow(),
internal::kShellWindowId_LockScreenContainer);
widget->Init(params);
widget->SetContentsView(lock_view);
widget->Show();
widget->GetNativeView()->SetName("LockView");
widget->GetNativeView()->Focus();
// TODO: it shouldn't be necessary to invoke UpdateTooltip() here.
Shell::GetInstance()->tooltip_controller()->UpdateTooltip(
widget->GetNativeView());
}
} // namespace shell
} // namespace ash
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