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| 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/compact_layout_manager.h" | |
| 6 | |
| 7 #include <vector> | |
| 8 | |
| 9 #include "ash/shell.h" | |
| 10 #include "ash/shell_delegate.h" | |
| 11 #include "ash/shell_window_ids.h" | |
| 12 #include "ash/wm/window_util.h" | |
| 13 #include "ui/aura/client/aura_constants.h" | |
| 14 #include "ui/aura/window.h" | |
| 15 #include "ui/gfx/compositor/layer.h" | |
| 16 #include "ui/gfx/compositor/layer_animation_sequence.h" | |
| 17 #include "ui/gfx/compositor/scoped_layer_animation_settings.h" | |
| 18 #include "ui/gfx/screen.h" | |
| 19 #include "ui/views/widget/widget.h" | |
| 20 | |
| 21 namespace ash { | |
| 22 namespace internal { | |
| 23 | |
| 24 namespace { | |
| 25 | |
| 26 typedef std::vector<aura::Window*> WindowList; | |
| 27 typedef std::vector<aura::Window*>::const_iterator WindowListConstIter; | |
| 28 | |
| 29 // Convenience method to get the layer of this container. | |
| 30 ui::Layer* GetDefaultContainerLayer() { | |
| 31 return Shell::GetInstance()->GetContainer( | |
| 32 internal::kShellWindowId_DefaultContainer)->layer(); | |
| 33 } | |
| 34 | |
| 35 // Whether it is a window that should be animated on entrance. | |
| 36 bool ShouldAnimateOnEntrance(aura::Window* window) { | |
| 37 return window && | |
| 38 window->type() == aura::client::WINDOW_TYPE_NORMAL && | |
| 39 wm::IsWindowMaximized(window); | |
| 40 } | |
| 41 | |
| 42 // Adjust layer bounds to grow or shrink in |delta_width|. | |
| 43 void AdjustContainerLayerWidth(int delta_width) { | |
| 44 gfx::Rect bounds(GetDefaultContainerLayer()->bounds()); | |
| 45 bounds.set_width(bounds.width() + delta_width); | |
| 46 GetDefaultContainerLayer()->SetBounds(bounds); | |
| 47 } | |
| 48 | |
| 49 } // namespace | |
| 50 | |
| 51 ///////////////////////////////////////////////////////////////////////////// | |
| 52 // CompactLayoutManager, public: | |
| 53 | |
| 54 CompactLayoutManager::CompactLayoutManager() | |
| 55 : status_area_widget_(NULL), | |
| 56 current_window_(NULL) { | |
| 57 } | |
| 58 | |
| 59 CompactLayoutManager::~CompactLayoutManager() { | |
| 60 } | |
| 61 | |
| 62 ///////////////////////////////////////////////////////////////////////////// | |
| 63 // CompactLayoutManager, LayoutManager overrides: | |
| 64 | |
| 65 void CompactLayoutManager::OnWindowAddedToLayout(aura::Window* child) { | |
| 66 // Windows added to this container does not need extra animation. | |
| 67 if (child->type() == aura::client::WINDOW_TYPE_NORMAL) | |
| 68 child->SetProperty(aura::client::kAnimationsDisabledKey, true); | |
| 69 BaseLayoutManager::OnWindowAddedToLayout(child); | |
| 70 UpdateStatusAreaVisibility(); | |
| 71 if (windows().size() > 1 && | |
| 72 child->type() == aura::client::WINDOW_TYPE_NORMAL) { | |
| 73 // The first window is already contained in the current layer, | |
| 74 // add subsequent windows to layer bounds calculation. | |
| 75 AdjustContainerLayerWidth(child->bounds().width()); | |
| 76 } | |
| 77 } | |
| 78 | |
| 79 void CompactLayoutManager::OnWillRemoveWindowFromLayout(aura::Window* child) { | |
| 80 BaseLayoutManager::OnWillRemoveWindowFromLayout(child); | |
| 81 UpdateStatusAreaVisibility(); | |
| 82 if (windows().size() > 1 && ShouldAnimateOnEntrance(child)) | |
| 83 AdjustContainerLayerWidth(-child->bounds().width()); | |
| 84 | |
| 85 if (child == current_window_) { | |
| 86 LayoutWindows(current_window_); | |
| 87 SwitchToReplacementWindow(); | |
| 88 } | |
| 89 // Allow window to be animated by others. | |
| 90 if (child->type() == aura::client::WINDOW_TYPE_NORMAL) | |
| 91 child->SetProperty(aura::client::kAnimationsDisabledKey, false); | |
| 92 } | |
| 93 | |
| 94 void CompactLayoutManager::OnChildWindowVisibilityChanged(aura::Window* child, | |
| 95 bool visible) { | |
| 96 BaseLayoutManager::OnChildWindowVisibilityChanged(child, visible); | |
| 97 UpdateStatusAreaVisibility(); | |
| 98 if (ShouldAnimateOnEntrance(child)) { | |
| 99 LayoutWindows(visible ? NULL : child); | |
| 100 if (visible) { | |
| 101 current_window_ = child; | |
| 102 AnimateSlideTo(child->bounds().x()); | |
| 103 } else if (child == current_window_) { | |
| 104 SwitchToReplacementWindow(); | |
| 105 } | |
| 106 } | |
| 107 } | |
| 108 | |
| 109 void CompactLayoutManager::SetChildBounds(aura::Window* child, | |
| 110 const gfx::Rect& requested_bounds) { | |
| 111 gfx::Rect child_bounds(requested_bounds); | |
| 112 // Avoid a janky resize on startup by ensuring the initial bounds fill the | |
| 113 // screen. | |
| 114 if (wm::IsWindowMaximized(child)) | |
| 115 child_bounds = gfx::Screen::GetMonitorWorkAreaNearestWindow(child); | |
| 116 else if (wm::IsWindowFullscreen(child)) | |
| 117 child_bounds = gfx::Screen::GetMonitorAreaNearestWindow(child); | |
| 118 else if (current_window_) { | |
| 119 // All other windows should be offset by the current viewport. | |
| 120 int offset_x = current_window_->bounds().x(); | |
| 121 child_bounds.Offset(offset_x, 0); | |
| 122 } | |
| 123 SetChildBoundsDirect(child, child_bounds); | |
| 124 } | |
| 125 | |
| 126 ///////////////////////////////////////////////////////////////////////////// | |
| 127 // CompactLayoutManager, aura::WindowObserver overrides: | |
| 128 | |
| 129 void CompactLayoutManager::OnWindowPropertyChanged(aura::Window* window, | |
| 130 const void* key, | |
| 131 intptr_t old) { | |
| 132 BaseLayoutManager::OnWindowPropertyChanged(window, key, old); | |
| 133 if (key == aura::client::kShowStateKey) | |
| 134 UpdateStatusAreaVisibility(); | |
| 135 } | |
| 136 | |
| 137 void CompactLayoutManager::OnWindowStackingChanged(aura::Window* window) { | |
| 138 if (!current_window_ || ShouldAnimateOnEntrance(window)) { | |
| 139 if (current_window_ != window) { | |
| 140 LayoutWindows(current_window_); | |
| 141 current_window_ = window; | |
| 142 } else { | |
| 143 // Same window as |current_window_|, and already animating. | |
| 144 if (GetDefaultContainerLayer()->GetAnimator()->is_animating()) | |
| 145 return; | |
| 146 } | |
| 147 // Animate to |window| when there is a stacking change. | |
| 148 AnimateSlideTo(window->bounds().x()); | |
| 149 } | |
| 150 } | |
| 151 | |
| 152 ///////////////////////////////////////////////////////////////////////////// | |
| 153 // CompactLayoutManager, AnimationDelegate overrides: | |
| 154 | |
| 155 void CompactLayoutManager::OnImplicitAnimationsCompleted() { | |
| 156 if (!GetDefaultContainerLayer()->GetAnimator()->is_animating()) | |
| 157 HideWindows(); | |
| 158 } | |
| 159 | |
| 160 ////////////////////////////////////////////////////////////////////////////// | |
| 161 // CompactLayoutManager, private: | |
| 162 | |
| 163 void CompactLayoutManager::UpdateStatusAreaVisibility() { | |
| 164 if (!status_area_widget_) | |
| 165 return; | |
| 166 // Full screen windows should hide the status area widget. | |
| 167 bool has_fullscreen = wm::HasFullscreenWindow(windows()); | |
| 168 bool widget_visible = status_area_widget_->IsVisible(); | |
| 169 if (has_fullscreen && widget_visible) | |
| 170 status_area_widget_->Hide(); | |
| 171 else if (!has_fullscreen && !widget_visible) | |
| 172 status_area_widget_->Show(); | |
| 173 } | |
| 174 | |
| 175 void CompactLayoutManager::AnimateSlideTo(int offset_x) { | |
| 176 GetDefaultContainerLayer()->GetAnimator()->RemoveObserver(this); | |
| 177 ui::ScopedLayerAnimationSettings settings( | |
| 178 GetDefaultContainerLayer()->GetAnimator()); | |
| 179 settings.AddObserver(this); | |
| 180 ui::Transform transform; | |
| 181 transform.ConcatTranslate(-offset_x, 0); | |
| 182 GetDefaultContainerLayer()->SetTransform(transform); // Will be animated! | |
| 183 } | |
| 184 | |
| 185 void CompactLayoutManager::LayoutWindows(aura::Window* skip) { | |
| 186 ShellDelegate* shell_delegate = ash::Shell::GetInstance()->delegate(); | |
| 187 const WindowList& windows_list = shell_delegate->GetCycleWindowList( | |
| 188 ShellDelegate::SOURCE_KEYBOARD, | |
| 189 ShellDelegate::ORDER_LINEAR); | |
| 190 int new_x = 0; | |
| 191 for (WindowListConstIter const_it = windows_list.begin(); | |
| 192 const_it != windows_list.end(); | |
| 193 ++const_it) { | |
| 194 if (*const_it != skip) { | |
| 195 gfx::Rect new_bounds((*const_it)->bounds()); | |
| 196 new_bounds.set_x(new_x); | |
| 197 SetChildBoundsDirect(*const_it, new_bounds); | |
| 198 (*const_it)->layer()->SetVisible(true); | |
| 199 new_x += (*const_it)->bounds().width(); | |
| 200 } | |
| 201 } | |
| 202 } | |
| 203 | |
| 204 void CompactLayoutManager::HideWindows() { | |
| 205 // If we do not know which one is the current window, or if the current | |
| 206 // window is not visible, do not attempt to hide the windows. | |
| 207 if (current_window_ == NULL) | |
| 208 return; | |
| 209 // Current window should be visible, if not it is an error and we shouldn't | |
| 210 // proceed. | |
| 211 if (!current_window_->layer()->visible()) | |
| 212 NOTREACHED() << "Current window is invisible"; | |
| 213 | |
| 214 ShellDelegate* shell_delegate = ash::Shell::GetInstance()->delegate(); | |
| 215 const WindowList& windows_list = shell_delegate->GetCycleWindowList( | |
| 216 ShellDelegate::SOURCE_KEYBOARD, | |
| 217 ShellDelegate::ORDER_LINEAR); | |
| 218 for (WindowListConstIter const_it = windows_list.begin(); | |
| 219 const_it != windows_list.end(); | |
| 220 ++const_it) { | |
| 221 if (*const_it != current_window_) | |
| 222 (*const_it)->layer()->SetVisible(false); | |
| 223 } | |
| 224 } | |
| 225 | |
| 226 aura::Window* CompactLayoutManager::FindReplacementWindow( | |
| 227 aura::Window* window) { | |
| 228 ShellDelegate* shell_delegate = ash::Shell::GetInstance()->delegate(); | |
| 229 const WindowList& windows_list = shell_delegate->GetCycleWindowList( | |
| 230 ShellDelegate::SOURCE_KEYBOARD, | |
| 231 ShellDelegate::ORDER_LINEAR); | |
| 232 WindowListConstIter const_it = std::find(windows_list.begin(), | |
| 233 windows_list.end(), | |
| 234 window); | |
| 235 if (windows_list.size() > 1 && const_it != windows_list.end()) { | |
| 236 do { | |
| 237 ++const_it; | |
| 238 if (const_it == windows_list.end()) | |
| 239 const_it = windows_list.begin(); | |
| 240 } while (*const_it != window && !(*const_it)->IsVisible()); | |
| 241 if (*const_it != window) | |
| 242 return *const_it; | |
| 243 } | |
| 244 return NULL; | |
| 245 } | |
| 246 | |
| 247 void CompactLayoutManager::SwitchToReplacementWindow() { | |
| 248 current_window_ = FindReplacementWindow(current_window_); | |
| 249 if (current_window_) { | |
| 250 wm::ActivateWindow(current_window_); | |
| 251 AnimateSlideTo(current_window_->bounds().x()); | |
| 252 } | |
| 253 } | |
| 254 | |
| 255 } // namespace internal | |
| 256 } // namespace ash | |
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