ash/wm/lock_window_state.cc

   1 // Copyright 2014 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/lock_window_state.h"
   6
   7 #include "ash/screen_util.h"
   8 #include "ash/shell.h"
   9 #include "ash/wm/lock_layout_manager.h"
  10 #include "ash/wm/window_animations.h"
  11 #include "ash/wm/window_state.h"
  12 #include "ash/wm/window_state_delegate.h"
  13 #include "ash/wm/window_state_util.h"
  14 #include "ash/wm/window_util.h"
  15 #include "ash/wm/wm_event.h"
  16 #include "ui/aura/window.h"
  17 #include "ui/aura/window_delegate.h"
  18 #include "ui/gfx/rect.h"
  19 #include "ui/keyboard/keyboard_controller.h"
  20 #include "ui/keyboard/keyboard_util.h"
  21 #include "ui/wm/core/window_animations.h"
  22
  23 namespace ash {
  24
  25 LockWindowState::LockWindowState(aura::Window* window)
  26     : current_state_type_(wm::GetWindowState(window)->GetStateType()) {
  27 }
  28
  29 LockWindowState::~LockWindowState() {
  30 }
  31
  32 void LockWindowState::OnWMEvent(wm::WindowState* window_state,
  33                                 const wm::WMEvent* event) {
  34   aura::Window* window = window_state->window();
  35   gfx::Rect bounds = window->bounds();
  36
  37   switch (event->type()) {
  38     case wm::WM_EVENT_TOGGLE_FULLSCREEN:
  39       ToggleFullScreen(window_state, window_state->delegate());
  40       break;
  41     case wm::WM_EVENT_FULLSCREEN:
  42       UpdateWindow(window_state, wm::WINDOW_STATE_TYPE_FULLSCREEN);
  43       break;
  44     case wm::WM_EVENT_TOGGLE_MAXIMIZE_CAPTION:
  45     case wm::WM_EVENT_TOGGLE_VERTICAL_MAXIMIZE:
  46     case wm::WM_EVENT_TOGGLE_HORIZONTAL_MAXIMIZE:
  47     case wm::WM_EVENT_TOGGLE_MAXIMIZE:
  48     case wm::WM_EVENT_CENTER:
  49     case wm::WM_EVENT_SNAP_LEFT:
  50     case wm::WM_EVENT_SNAP_RIGHT:
  51     case wm::WM_EVENT_NORMAL:
  52     case wm::WM_EVENT_MAXIMIZE:
  53       UpdateWindow(window_state,
  54                    GetMaximizedOrCenteredWindowType(window_state));
  55       return;
  56     case wm::WM_EVENT_MINIMIZE:
  57       UpdateWindow(window_state, wm::WINDOW_STATE_TYPE_MINIMIZED);
  58       return;
  59     case wm::WM_EVENT_SHOW_INACTIVE:
  60       return;
  61     case wm::WM_EVENT_SET_BOUNDS:
  62       if (window_state->IsMaximized() || window_state->IsFullscreen()) {
  63         UpdateBounds(window_state);
  64       } else {
  65         const ash::wm::SetBoundsEvent* bounds_event =
  66             static_cast<const ash::wm::SetBoundsEvent*>(event);
  67         window_state->SetBoundsConstrained(bounds_event->requested_bounds());
  68       }
  69       break;
  70     case wm::WM_EVENT_ADDED_TO_WORKSPACE:
  71       if (current_state_type_ != wm::WINDOW_STATE_TYPE_MAXIMIZED &&
  72           current_state_type_ != wm::WINDOW_STATE_TYPE_MINIMIZED &&
  73           current_state_type_ != wm::WINDOW_STATE_TYPE_FULLSCREEN) {
  74         UpdateWindow(window_state,
  75                      GetMaximizedOrCenteredWindowType(window_state));
  76       }
  77       break;
  78     case wm::WM_EVENT_WORKAREA_BOUNDS_CHANGED:
  79     case wm::WM_EVENT_DISPLAY_BOUNDS_CHANGED:
  80       UpdateBounds(window_state);
  81       break;
  82   }
  83 }
  84
  85 wm::WindowStateType LockWindowState::GetType() const {
  86   return current_state_type_;
  87 }
  88
  89 void LockWindowState::AttachState(wm::WindowState* window_state,
  90                                   wm::WindowState::State* previous_state) {
  91   current_state_type_ = previous_state->GetType();
  92
  93   // Initialize the state to a good preset.
  94   if (current_state_type_ != wm::WINDOW_STATE_TYPE_MAXIMIZED &&
  95       current_state_type_ != wm::WINDOW_STATE_TYPE_MINIMIZED &&
  96       current_state_type_ != wm::WINDOW_STATE_TYPE_FULLSCREEN) {
  97     UpdateWindow(window_state,
  98                  GetMaximizedOrCenteredWindowType(window_state));
  99   }
 100 }
 101
 102 void LockWindowState::DetachState(wm::WindowState* window_state) {
 103 }
 104
 105 // static
 106 wm::WindowState* LockWindowState::SetLockWindowState(aura::Window* window) {
 107   scoped_ptr<wm::WindowState::State> lock_state(new LockWindowState(window));
 108   scoped_ptr<wm::WindowState::State> old_state(
 109       wm::GetWindowState(window)->SetStateObject(lock_state.Pass()));
 110   return wm::GetWindowState(window);
 111 }
 112
 113 void LockWindowState::UpdateWindow(wm::WindowState* window_state,
 114                                    wm::WindowStateType target_state) {
 115   DCHECK(target_state == wm::WINDOW_STATE_TYPE_MINIMIZED ||
 116          target_state == wm::WINDOW_STATE_TYPE_MAXIMIZED ||
 117          (target_state == wm::WINDOW_STATE_TYPE_NORMAL &&
 118               !window_state->CanMaximize()) ||
 119          target_state == wm::WINDOW_STATE_TYPE_FULLSCREEN);
 120
 121   if (target_state == wm::WINDOW_STATE_TYPE_MINIMIZED) {
 122     if (current_state_type_ == wm::WINDOW_STATE_TYPE_MINIMIZED)
 123       return;
 124
 125     current_state_type_ = target_state;
 126     ::wm::SetWindowVisibilityAnimationType(
 127         window_state->window(), WINDOW_VISIBILITY_ANIMATION_TYPE_MINIMIZE);
 128     window_state->window()->Hide();
 129     if (window_state->IsActive())
 130       window_state->Deactivate();
 131     return;
 132   }
 133
 134   if (current_state_type_ == target_state) {
 135     // If the state type did not change, update it accordingly.
 136     UpdateBounds(window_state);
 137     return;
 138   }
 139
 140   const wm::WindowStateType old_state_type = current_state_type_;
 141   current_state_type_ = target_state;
 142   window_state->UpdateWindowShowStateFromStateType();
 143   window_state->NotifyPreStateTypeChange(old_state_type);
 144   UpdateBounds(window_state);
 145   window_state->NotifyPostStateTypeChange(old_state_type);
 146
 147   if ((window_state->window()->TargetVisibility() ||
 148       old_state_type == wm::WINDOW_STATE_TYPE_MINIMIZED) &&
 149       !window_state->window()->layer()->visible()) {
 150     // The layer may be hidden if the window was previously minimized. Make
 151     // sure it's visible.
 152     window_state->window()->Show();
 153   }
 154 }
 155
 156 wm::WindowStateType LockWindowState::GetMaximizedOrCenteredWindowType(
 157       wm::WindowState* window_state) {
 158   return window_state->CanMaximize() ? wm::WINDOW_STATE_TYPE_MAXIMIZED :
 159                                        wm::WINDOW_STATE_TYPE_NORMAL;
 160 }
 161
 162 void LockWindowState::UpdateBounds(wm::WindowState* window_state) {
 163   if (!window_state->IsMaximized() && !window_state->IsFullscreen())
 164     return;
 165
 166   keyboard::KeyboardController* keyboard_controller =
 167       keyboard::KeyboardController::GetInstance();
 168   gfx::Rect keyboard_bounds;
 169
 170   if (keyboard_controller && !keyboard::IsKeyboardOverscrollEnabled())
 171     keyboard_bounds = keyboard_controller->current_keyboard_bounds();
 172
 173   gfx::Rect bounds =
 174       ScreenUtil::GetDisplayBoundsInParent(window_state->window());
 175   bounds.set_height(bounds.height() - keyboard_bounds.height());
 176   window_state->SetBoundsDirect(bounds);
 177 }
 178
 179 }  // namespace ash