window_util.cc revision c2e0dbddbe15c98d52c4786dac06cb8952a8ae6d 
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/wm/window_util.h"
6
7#include <vector>
8
9#include "ash/ash_constants.h"
10#include "ash/root_window_controller.h"
11#include "ash/shell.h"
12#include "ash/shell_window_ids.h"
13#include "ash/wm/activation_controller.h"
14#include "ash/wm/window_properties.h"
15#include "ui/aura/client/activation_client.h"
16#include "ui/aura/client/aura_constants.h"
17#include "ui/aura/root_window.h"
18#include "ui/aura/window.h"
19#include "ui/aura/window_delegate.h"
20#include "ui/compositor/layer.h"
21#include "ui/gfx/display.h"
22#include "ui/gfx/rect.h"
23#include "ui/gfx/screen.h"
24#include "ui/views/corewm/window_util.h"
25#include "ui/views/view.h"
26#include "ui/views/widget/widget.h"
27
28namespace ash {
29namespace wm {
30
31// TODO(beng): replace many of these functions with the corewm versions.
32void ActivateWindow(aura::Window* window) {
33  views::corewm::ActivateWindow(window);
34}
35
36void DeactivateWindow(aura::Window* window) {
37  views::corewm::DeactivateWindow(window);
38}
39
40bool IsActiveWindow(aura::Window* window) {
41  return views::corewm::IsActiveWindow(window);
42}
43
44aura::Window* GetActiveWindow() {
45  return aura::client::GetActivationClient(Shell::GetPrimaryRootWindow())->
46      GetActiveWindow();
47}
48
49aura::Window* GetActivatableWindow(aura::Window* window) {
50  return views::corewm::GetActivatableWindow(window);
51}
52
53bool CanActivateWindow(aura::Window* window) {
54  return views::corewm::CanActivateWindow(window);
55}
56
57bool CanMaximizeWindow(const aura::Window* window) {
58  return window->GetProperty(aura::client::kCanMaximizeKey);
59}
60
61bool CanMinimizeWindow(const aura::Window* window) {
62  internal::RootWindowController* controller =
63      internal::RootWindowController::ForWindow(window);
64  if (!controller)
65    return false;
66  aura::Window* lockscreen = controller->GetContainer(
67      internal::kShellWindowId_LockScreenContainersContainer);
68  if (lockscreen->Contains(window))
69    return false;
70
71  return true;
72}
73
74bool CanResizeWindow(const aura::Window* window) {
75  return window->GetProperty(aura::client::kCanResizeKey);
76}
77
78bool CanSnapWindow(aura::Window* window) {
79  if (!CanResizeWindow(window))
80    return false;
81  // If a window has a maximum size defined, snapping may make it too big.
82  return window->delegate() ? window->delegate()->GetMaximumSize().IsEmpty() :
83                              true;
84}
85
86bool IsWindowNormal(const aura::Window* window) {
87  return IsWindowStateNormal(window->GetProperty(aura::client::kShowStateKey));
88}
89
90bool IsWindowStateNormal(ui::WindowShowState state) {
91  return state == ui::SHOW_STATE_NORMAL || state == ui::SHOW_STATE_DEFAULT;
92}
93
94bool IsWindowMaximized(const aura::Window* window) {
95  return window->GetProperty(aura::client::kShowStateKey) ==
96      ui::SHOW_STATE_MAXIMIZED;
97}
98
99bool IsWindowMinimized(const aura::Window* window) {
100  return window->GetProperty(aura::client::kShowStateKey) ==
101      ui::SHOW_STATE_MINIMIZED;
102}
103
104bool IsWindowFullscreen(const aura::Window* window) {
105  return window->GetProperty(aura::client::kShowStateKey) ==
106      ui::SHOW_STATE_FULLSCREEN;
107}
108
109void MaximizeWindow(aura::Window* window) {
110  window->SetProperty(aura::client::kShowStateKey, ui::SHOW_STATE_MAXIMIZED);
111}
112
113void MinimizeWindow(aura::Window* window) {
114  window->SetProperty(aura::client::kShowStateKey, ui::SHOW_STATE_MINIMIZED);
115}
116
117void RestoreWindow(aura::Window* window) {
118  window->SetProperty(aura::client::kShowStateKey, ui::SHOW_STATE_NORMAL);
119}
120
121void ToggleMaximizedWindow(aura::Window* window) {
122  if (ash::wm::IsWindowMaximized(window))
123    ash::wm::RestoreWindow(window);
124  else if (ash::wm::CanMaximizeWindow(window))
125    ash::wm::MaximizeWindow(window);
126}
127
128void CenterWindow(aura::Window* window) {
129  const gfx::Display display =
130      Shell::GetScreen()->GetDisplayNearestWindow(window);
131  gfx::Rect center = display.work_area();
132  center.ClampToCenteredSize(window->bounds().size());
133  window->SetBoundsInScreen(center, display);
134}
135
136bool IsWindowPositionManaged(const aura::Window* window) {
137  return window->GetProperty(ash::internal::kWindowPositionManagedKey);
138}
139
140void SetWindowPositionManaged(aura::Window* window, bool managed) {
141  window->SetProperty(ash::internal::kWindowPositionManagedKey, managed);
142}
143
144bool HasUserChangedWindowPositionOrSize(const aura::Window* window) {
145  return window->GetProperty(
146      ash::internal::kUserChangedWindowPositionOrSizeKey);
147}
148
149void SetUserHasChangedWindowPositionOrSize(aura::Window* window, bool changed) {
150  window->SetProperty(ash::internal::kUserChangedWindowPositionOrSizeKey,
151                      changed);
152}
153
154const gfx::Rect* GetPreAutoManageWindowBounds(const aura::Window* window) {
155  return window->GetProperty(ash::internal::kPreAutoManagedWindowBoundsKey);
156}
157
158void SetPreAutoManageWindowBounds(aura::Window* window,
159                                const gfx::Rect& bounds) {
160  window->SetProperty(ash::internal::kPreAutoManagedWindowBoundsKey,
161                      new gfx::Rect(bounds));
162}
163
164void AdjustBoundsToEnsureMinimumWindowVisibility(const gfx::Rect& work_area,
165                                                 gfx::Rect* bounds) {
166  AdjustBoundsToEnsureWindowVisibility(
167      work_area, kMinimumOnScreenArea, kMinimumOnScreenArea, bounds);
168}
169
170void AdjustBoundsToEnsureWindowVisibility(const gfx::Rect& work_area,
171                                          int min_width,
172                                          int min_height,
173                                          gfx::Rect* bounds) {
174  bounds->set_width(std::min(bounds->width(), work_area.width()));
175  bounds->set_height(std::min(bounds->height(), work_area.height()));
176  if (!work_area.Intersects(*bounds)) {
177    int y_offset = 0;
178    if (work_area.bottom() < bounds->y()) {
179      y_offset = work_area.bottom() - bounds->y() - min_height;
180    } else if (bounds->bottom() < work_area.y()) {
181      y_offset = work_area.y() - bounds->bottom() + min_height;
182    }
183
184    int x_offset = 0;
185    if (work_area.right() < bounds->x()) {
186      x_offset = work_area.right() - bounds->x() - min_width;
187    } else if (bounds->right() < work_area.x()) {
188      x_offset = work_area.x() - bounds->right() + min_width;
189    }
190    bounds->Offset(x_offset, y_offset);
191  }
192}
193
194bool MoveWindowToEventRoot(aura::Window* window, const ui::Event& event) {
195  views::View* target = static_cast<views::View*>(event.target());
196  if (!target)
197    return false;
198  aura::RootWindow* target_root =
199      target->GetWidget()->GetNativeView()->GetRootWindow();
200  if (!target_root || target_root == window->GetRootWindow())
201    return false;
202  aura::Window* window_container =
203      ash::Shell::GetContainer(target_root, window->parent()->id());
204  // Move the window to the target launcher.
205  window_container->AddChild(window);
206  return true;
207}
208
209}  // namespace wm
210}  // namespace ash
211