1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "ash/session/session_state_delegate.h"
6 #include "ash/shell.h"
7 #include "ash/shell/example_factory.h"
8 #include "ash/shell_window_ids.h"
9 #include "base/strings/utf_string_conversions.h"
10 #include "ui/aura/window.h"
11 #include "ui/aura/window_event_dispatcher.h"
12 #include "ui/gfx/canvas.h"
13 #include "ui/gfx/font_list.h"
14 #include "ui/gfx/geometry/rect.h"
15 #include "ui/gfx/text_utils.h"
16 #include "ui/views/controls/button/label_button.h"
17 #include "ui/views/corewm/tooltip_controller.h"
18 #include "ui/views/widget/widget.h"
19 #include "ui/views/widget/widget_delegate.h"
20
21 using ash::Shell;
22
23 namespace ash {
24 namespace shell {
25
26 class LockView : public views::WidgetDelegateView,
27 public views::ButtonListener {
28 public:
LockView()29 LockView() : unlock_button_(new views::LabelButton(
30 this, base::ASCIIToUTF16("Unlock"))) {
31 unlock_button_->SetStyle(views::Button::STYLE_BUTTON);
32 AddChildView(unlock_button_);
33 unlock_button_->SetFocusable(true);
34 }
~LockView()35 virtual ~LockView() {}
36
37 // Overridden from views::View:
GetPreferredSize() const38 virtual gfx::Size GetPreferredSize() const OVERRIDE {
39 return gfx::Size(500, 400);
40 }
41
42 private:
43 // Overridden from views::View:
OnPaint(gfx::Canvas * canvas)44 virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE {
45 canvas->FillRect(GetLocalBounds(), SK_ColorYELLOW);
46 base::string16 text = base::ASCIIToUTF16("LOCKED!");
47 int string_width = gfx::GetStringWidth(text, font_list_);
48 canvas->DrawStringRect(text, font_list_, SK_ColorRED,
49 gfx::Rect((width() - string_width)/ 2,
50 (height() - font_list_.GetHeight()) / 2,
51 string_width, font_list_.GetHeight()));
52 }
Layout()53 virtual void Layout() OVERRIDE {
54 gfx::Rect bounds = GetLocalBounds();
55 gfx::Size ps = unlock_button_->GetPreferredSize();
56 bounds.set_y(bounds.bottom() - ps.height() - 5);
57 bounds.set_x((bounds.width() - ps.width()) / 2);
58 bounds.set_size(ps);
59 unlock_button_->SetBoundsRect(bounds);
60 }
ViewHierarchyChanged(const ViewHierarchyChangedDetails & details)61 virtual void ViewHierarchyChanged(
62 const ViewHierarchyChangedDetails& details) OVERRIDE {
63 if (details.is_add && details.child == this)
64 unlock_button_->RequestFocus();
65 }
66
67 // Overridden from views::WidgetDelegateView:
WindowClosing()68 virtual void WindowClosing() OVERRIDE {
69 Shell::GetInstance()->session_state_delegate()->UnlockScreen();
70 }
71
72 // Overridden from views::ButtonListener:
ButtonPressed(views::Button * sender,const ui::Event & event)73 virtual void ButtonPressed(views::Button* sender,
74 const ui::Event& event) OVERRIDE {
75 DCHECK(sender == unlock_button_);
76 GetWidget()->Close();
77 }
78
79 gfx::FontList font_list_;
80 views::LabelButton* unlock_button_;
81
82 DISALLOW_COPY_AND_ASSIGN(LockView);
83 };
84
CreateLockScreen()85 void CreateLockScreen() {
86 LockView* lock_view = new LockView;
87 views::Widget* widget = new views::Widget;
88 views::Widget::InitParams params(
89 views::Widget::InitParams::TYPE_WINDOW_FRAMELESS);
90 gfx::Size ps = lock_view->GetPreferredSize();
91
92 gfx::Size root_window_size = Shell::GetPrimaryRootWindow()->bounds().size();
93 params.bounds = gfx::Rect((root_window_size.width() - ps.width()) / 2,
94 (root_window_size.height() - ps.height()) / 2,
95 ps.width(), ps.height());
96 params.delegate = lock_view;
97 params.parent = Shell::GetContainer(Shell::GetPrimaryRootWindow(),
98 kShellWindowId_LockScreenContainer);
99 widget->Init(params);
100 widget->SetContentsView(lock_view);
101 widget->Show();
102 widget->GetNativeView()->SetName("LockView");
103 widget->GetNativeView()->Focus();
104
105 // TODO: it shouldn't be necessary to invoke UpdateTooltip() here.
106 Shell::GetInstance()->tooltip_controller()->UpdateTooltip(
107 widget->GetNativeView());
108 }
109
110 } // namespace shell
111 } // namespace ash
112