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| 1 // Copyright 2013 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/common/wm/window_positioner.h" | |
| 6 | |
| 7 #include "ash/common/wm/mru_window_tracker.h" | |
| 8 #include "ash/common/wm/window_positioning_utils.h" | |
| 9 #include "ash/common/wm/window_state.h" | |
| 10 #include "ash/common/wm/wm_screen_util.h" | |
| 11 #include "ash/common/wm_shell.h" | |
| 12 #include "ash/common/wm_window.h" | |
| 13 #include "ui/compositor/layer.h" | |
| 14 #include "ui/display/display.h" | |
| 15 #include "ui/display/screen.h" | |
| 16 #include "ui/gfx/geometry/insets.h" | |
| 17 | |
| 18 namespace ash { | |
| 19 | |
| 20 const int WindowPositioner::kMinimumWindowOffset = 32; | |
| 21 | |
| 22 // The number of pixels which are kept free top, left and right when a window | |
| 23 // gets positioned to its default location. | |
| 24 // static | |
| 25 const int WindowPositioner::kDesktopBorderSize = 16; | |
| 26 | |
| 27 // Maximum width of a window even if there is more room on the desktop. | |
| 28 // static | |
| 29 const int WindowPositioner::kMaximumWindowWidth = 1100; | |
| 30 | |
| 31 namespace { | |
| 32 | |
| 33 // When a window gets opened in default mode and the screen is less than or | |
| 34 // equal to this width, the window will get opened in maximized mode. This value | |
| 35 // can be reduced to a "tame" number if the feature is disabled. | |
| 36 const int kForceMaximizeWidthLimit = 1366; | |
| 37 | |
| 38 // The time in milliseconds which should be used to visually move a window | |
| 39 // through an automatic "intelligent" window management option. | |
| 40 const int kWindowAutoMoveDurationMS = 125; | |
| 41 | |
| 42 // If set to true all window repositioning actions will be ignored. Set through | |
| 43 // WindowPositioner::SetIgnoreActivations(). | |
| 44 static bool disable_auto_positioning = false; | |
| 45 | |
| 46 // If set to true, by default the first window in ASH will be maximized. | |
| 47 static bool maximize_first_window = false; | |
| 48 | |
| 49 // Check if any management should be performed (with a given |window|). | |
| 50 bool UseAutoWindowManager(const WmWindow* window) { | |
| 51 if (disable_auto_positioning) | |
| 52 return false; | |
| 53 const wm::WindowState* window_state = window->GetWindowState(); | |
| 54 return !window_state->is_dragged() && window_state->window_position_managed(); | |
| 55 } | |
| 56 | |
| 57 // Check if a given |window| can be managed. This includes that its | |
| 58 // state is not minimized/maximized/fullscreen/the user has changed | |
| 59 // its size by hand already. It furthermore checks for the | |
| 60 // WindowIsManaged status. | |
| 61 bool WindowPositionCanBeManaged(const WmWindow* window) { | |
| 62 if (disable_auto_positioning) | |
| 63 return false; | |
| 64 const wm::WindowState* window_state = window->GetWindowState(); | |
| 65 return window_state->window_position_managed() && | |
| 66 !window_state->IsMinimized() && !window_state->IsMaximized() && | |
| 67 !window_state->IsFullscreen() && !window_state->IsPinned() && | |
| 68 !window_state->bounds_changed_by_user(); | |
| 69 } | |
| 70 | |
| 71 // Move the given |bounds| on the available |work_area| in the direction | |
| 72 // indicated by |move_right|. If |move_right| is true, the rectangle gets moved | |
| 73 // to the right edge, otherwise to the left one. | |
| 74 bool MoveRectToOneSide(const gfx::Rect& work_area, | |
| 75 bool move_right, | |
| 76 gfx::Rect* bounds) { | |
| 77 if (move_right) { | |
| 78 if (work_area.right() > bounds->right()) { | |
| 79 bounds->set_x(work_area.right() - bounds->width()); | |
| 80 return true; | |
| 81 } | |
| 82 } else { | |
| 83 if (work_area.x() < bounds->x()) { | |
| 84 bounds->set_x(work_area.x()); | |
| 85 return true; | |
| 86 } | |
| 87 } | |
| 88 return false; | |
| 89 } | |
| 90 | |
| 91 // Move a |window| to new |bounds|. Animate if desired by user. | |
| 92 // Moves the transient children of the |window| as well by the same |offset| as | |
| 93 // the parent |window|. | |
| 94 void SetBoundsAndOffsetTransientChildren(WmWindow* window, | |
| 95 const gfx::Rect& bounds, | |
| 96 const gfx::Rect& work_area, | |
| 97 const gfx::Vector2d& offset) { | |
| 98 std::vector<WmWindow*> transient_children = window->GetTransientChildren(); | |
| 99 for (WmWindow* transient_child : transient_children) { | |
| 100 gfx::Rect child_bounds = transient_child->GetBounds(); | |
| 101 gfx::Rect new_child_bounds = child_bounds + offset; | |
| 102 if ((child_bounds.x() <= work_area.x() && | |
| 103 new_child_bounds.x() <= work_area.x()) || | |
| 104 (child_bounds.right() >= work_area.right() && | |
| 105 new_child_bounds.right() >= work_area.right())) { | |
| 106 continue; | |
| 107 } | |
| 108 if (new_child_bounds.right() > work_area.right()) | |
| 109 new_child_bounds.set_x(work_area.right() - bounds.width()); | |
| 110 else if (new_child_bounds.x() < work_area.x()) | |
| 111 new_child_bounds.set_x(work_area.x()); | |
| 112 SetBoundsAndOffsetTransientChildren(transient_child, new_child_bounds, | |
| 113 work_area, offset); | |
| 114 } | |
| 115 | |
| 116 window->SetBoundsWithTransitionDelay( | |
| 117 bounds, base::TimeDelta::FromMilliseconds(kWindowAutoMoveDurationMS)); | |
| 118 } | |
| 119 | |
| 120 // Move a |window| to new |bounds|. Animate if desired by user. | |
| 121 // Note: The function will do nothing if the bounds did not change. | |
| 122 void SetBoundsAnimated(WmWindow* window, | |
| 123 const gfx::Rect& bounds, | |
| 124 const gfx::Rect& work_area) { | |
| 125 gfx::Rect old_bounds = window->GetTargetBounds(); | |
| 126 if (bounds == old_bounds) | |
| 127 return; | |
| 128 gfx::Vector2d offset(bounds.origin() - old_bounds.origin()); | |
| 129 SetBoundsAndOffsetTransientChildren(window, bounds, work_area, offset); | |
| 130 } | |
| 131 | |
| 132 // Move |window| into the center of the screen - or restore it to the previous | |
| 133 // position. | |
| 134 void AutoPlaceSingleWindow(WmWindow* window, bool animated) { | |
| 135 gfx::Rect work_area = wm::GetDisplayWorkAreaBoundsInParent(window); | |
| 136 gfx::Rect bounds = window->GetBounds(); | |
| 137 const gfx::Rect* user_defined_area = | |
| 138 window->GetWindowState()->pre_auto_manage_window_bounds(); | |
| 139 if (user_defined_area) { | |
| 140 bounds = *user_defined_area; | |
| 141 wm::AdjustBoundsToEnsureMinimumWindowVisibility(work_area, &bounds); | |
| 142 } else { | |
| 143 // Center the window (only in x). | |
| 144 bounds.set_x(work_area.x() + (work_area.width() - bounds.width()) / 2); | |
| 145 } | |
| 146 | |
| 147 if (animated) | |
| 148 SetBoundsAnimated(window, bounds, work_area); | |
| 149 else | |
| 150 window->SetBounds(bounds); | |
| 151 } | |
| 152 | |
| 153 // Get the first open (non minimized) window which is on the screen defined. | |
| 154 WmWindow* GetReferenceWindow(const WmWindow* root_window, | |
| 155 const WmWindow* exclude, | |
| 156 bool* single_window) { | |
| 157 if (single_window) | |
| 158 *single_window = true; | |
| 159 // Get the active window. | |
| 160 WmWindow* active = root_window->GetShell()->GetActiveWindow(); | |
| 161 if (active && active->GetRootWindow() != root_window) | |
| 162 active = NULL; | |
| 163 | |
| 164 // Get a list of all windows. | |
| 165 const std::vector<WmWindow*> windows = root_window->GetShell() | |
| 166 ->mru_window_tracker() | |
| 167 ->BuildWindowListIgnoreModal(); | |
| 168 | |
| 169 if (windows.empty()) | |
| 170 return nullptr; | |
| 171 | |
| 172 int index = 0; | |
| 173 // Find the index of the current active window. | |
| 174 if (active) | |
| 175 index = std::find(windows.begin(), windows.end(), active) - windows.begin(); | |
| 176 | |
| 177 // Scan the cycle list backwards to see which is the second topmost window | |
| 178 // (and so on). Note that we might cycle a few indices twice if there is no | |
| 179 // suitable window. However - since the list is fairly small this should be | |
| 180 // very fast anyways. | |
| 181 WmWindow* found = nullptr; | |
| 182 for (int i = index + windows.size(); i >= 0; i--) { | |
| 183 WmWindow* window = windows[i % windows.size()]; | |
| 184 while (window->GetTransientParent()) | |
| 185 window = window->GetTransientParent(); | |
| 186 if (window != exclude && window->GetType() == ui::wm::WINDOW_TYPE_NORMAL && | |
| 187 window->GetRootWindow() == root_window && | |
| 188 window->GetTargetVisibility() && | |
| 189 window->GetWindowState()->window_position_managed()) { | |
| 190 if (found && found != window) { | |
| 191 // no need to check !single_window because the function must have | |
| 192 // been already returned in the "if (!single_window)" below. | |
| 193 *single_window = false; | |
| 194 return found; | |
| 195 } | |
| 196 found = window; | |
| 197 // If there is no need to check single window, return now. | |
| 198 if (!single_window) | |
| 199 return found; | |
| 200 } | |
| 201 } | |
| 202 return found; | |
| 203 } | |
| 204 | |
| 205 } // namespace | |
| 206 | |
| 207 // static | |
| 208 int WindowPositioner::GetForceMaximizedWidthLimit() { | |
| 209 return kForceMaximizeWidthLimit; | |
| 210 } | |
| 211 | |
| 212 // static | |
| 213 void WindowPositioner::GetBoundsAndShowStateForNewWindow( | |
| 214 const WmWindow* new_window, | |
| 215 bool is_saved_bounds, | |
| 216 ui::WindowShowState show_state_in, | |
| 217 gfx::Rect* bounds_in_out, | |
| 218 ui::WindowShowState* show_state_out) { | |
| 219 // Always open new window in the target display. | |
| 220 WmWindow* target = WmShell::Get()->GetRootWindowForNewWindows(); | |
| 221 | |
| 222 WmWindow* top_window = GetReferenceWindow(target, nullptr, nullptr); | |
| 223 // Our window should not have any impact if we are already on top. | |
| 224 if (top_window == new_window) | |
| 225 top_window = nullptr; | |
| 226 | |
| 227 // If there is no valid other window we take and adjust the passed coordinates | |
| 228 // and show state. | |
| 229 if (!top_window) { | |
| 230 gfx::Rect work_area = target->GetDisplayNearestWindow().work_area(); | |
| 231 | |
| 232 bounds_in_out->AdjustToFit(work_area); | |
| 233 // Use adjusted saved bounds, if there is one. | |
| 234 if (is_saved_bounds) | |
| 235 return; | |
| 236 | |
| 237 if (show_state_in == ui::SHOW_STATE_DEFAULT) { | |
| 238 const bool maximize_first_window_on_first_run = | |
| 239 target->GetShell()->IsForceMaximizeOnFirstRun(); | |
| 240 // We want to always open maximized on "small screens" or when policy | |
| 241 // tells us to. | |
| 242 const bool set_maximized = | |
| 243 maximize_first_window || | |
| 244 ((work_area.width() <= GetForceMaximizedWidthLimit() || | |
| 245 maximize_first_window_on_first_run) && | |
| 246 (!new_window || !new_window->GetWindowState()->IsFullscreen())); | |
| 247 | |
| 248 if (set_maximized) | |
| 249 *show_state_out = ui::SHOW_STATE_MAXIMIZED; | |
| 250 } | |
| 251 return; | |
| 252 } | |
| 253 | |
| 254 wm::WindowState* top_window_state = top_window->GetWindowState(); | |
| 255 bool maximized = top_window_state->IsMaximized(); | |
| 256 // We ignore the saved show state, but look instead for the top level | |
| 257 // window's show state. | |
| 258 if (show_state_in == ui::SHOW_STATE_DEFAULT) { | |
| 259 *show_state_out = | |
| 260 maximized ? ui::SHOW_STATE_MAXIMIZED : ui::SHOW_STATE_DEFAULT; | |
| 261 } | |
| 262 | |
| 263 if (maximized || top_window_state->IsFullscreen()) { | |
| 264 bool has_restore_bounds = top_window_state->HasRestoreBounds(); | |
| 265 if (has_restore_bounds) { | |
| 266 // For a maximized/fullscreen window ignore the real bounds of | |
| 267 // the top level window and use its restore bounds | |
| 268 // instead. Offset the bounds to prevent the windows from | |
| 269 // overlapping exactly when restored. | |
| 270 *bounds_in_out = | |
| 271 top_window_state->GetRestoreBoundsInScreen() + | |
| 272 gfx::Vector2d(kMinimumWindowOffset, kMinimumWindowOffset); | |
| 273 } | |
| 274 if (is_saved_bounds || has_restore_bounds) { | |
| 275 gfx::Rect work_area = target->GetDisplayNearestWindow().work_area(); | |
| 276 bounds_in_out->AdjustToFit(work_area); | |
| 277 // Use adjusted saved bounds or restore bounds, if there is one. | |
| 278 return; | |
| 279 } | |
| 280 } | |
| 281 | |
| 282 // Use the size of the other window. The window's bound will be rearranged | |
| 283 // in ash::WorkspaceLayoutManager using this location. | |
| 284 *bounds_in_out = top_window->GetBoundsInScreen(); | |
| 285 } | |
| 286 | |
| 287 // static | |
| 288 void WindowPositioner::RearrangeVisibleWindowOnHideOrRemove( | |
| 289 const WmWindow* removed_window) { | |
| 290 if (!UseAutoWindowManager(removed_window)) | |
| 291 return; | |
| 292 // Find a single open browser window. | |
| 293 bool single_window; | |
| 294 WmWindow* other_shown_window = GetReferenceWindow( | |
| 295 removed_window->GetRootWindow(), removed_window, &single_window); | |
| 296 if (!other_shown_window || !single_window || | |
| 297 !WindowPositionCanBeManaged(other_shown_window)) | |
| 298 return; | |
| 299 AutoPlaceSingleWindow(other_shown_window, true); | |
| 300 } | |
| 301 | |
| 302 // static | |
| 303 bool WindowPositioner::DisableAutoPositioning(bool ignore) { | |
| 304 bool old_state = disable_auto_positioning; | |
| 305 disable_auto_positioning = ignore; | |
| 306 return old_state; | |
| 307 } | |
| 308 | |
| 309 // static | |
| 310 void WindowPositioner::RearrangeVisibleWindowOnShow(WmWindow* added_window) { | |
| 311 wm::WindowState* added_window_state = added_window->GetWindowState(); | |
| 312 if (!added_window->GetTargetVisibility()) | |
| 313 return; | |
| 314 | |
| 315 if (!UseAutoWindowManager(added_window) || | |
| 316 added_window_state->bounds_changed_by_user()) { | |
| 317 if (added_window_state->minimum_visibility()) { | |
| 318 // Guarantee minimum visibility within the work area. | |
| 319 gfx::Rect work_area = wm::GetDisplayWorkAreaBoundsInParent(added_window); | |
| 320 gfx::Rect bounds = added_window->GetBounds(); | |
| 321 gfx::Rect new_bounds = bounds; | |
| 322 wm::AdjustBoundsToEnsureMinimumWindowVisibility(work_area, &new_bounds); | |
| 323 if (new_bounds != bounds) | |
| 324 added_window->SetBounds(new_bounds); | |
| 325 } | |
| 326 return; | |
| 327 } | |
| 328 // Find a single open managed window. | |
| 329 bool single_window; | |
| 330 WmWindow* other_shown_window = GetReferenceWindow( | |
| 331 added_window->GetRootWindow(), added_window, &single_window); | |
| 332 | |
| 333 if (!other_shown_window) { | |
| 334 // It could be that this window is the first window joining the workspace. | |
| 335 if (!WindowPositionCanBeManaged(added_window) || other_shown_window) | |
| 336 return; | |
| 337 // Since we might be going from 0 to 1 window, we have to arrange the new | |
| 338 // window to a good default. | |
| 339 AutoPlaceSingleWindow(added_window, false); | |
| 340 return; | |
| 341 } | |
| 342 | |
| 343 gfx::Rect other_bounds = other_shown_window->GetBounds(); | |
| 344 gfx::Rect work_area = wm::GetDisplayWorkAreaBoundsInParent(added_window); | |
| 345 bool move_other_right = | |
| 346 other_bounds.CenterPoint().x() > work_area.x() + work_area.width() / 2; | |
| 347 | |
| 348 // Push the other window to the size only if there are two windows left. | |
| 349 if (single_window) { | |
| 350 // When going from one to two windows both windows loose their | |
| 351 // "positioned by user" flags. | |
| 352 added_window_state->set_bounds_changed_by_user(false); | |
| 353 wm::WindowState* other_window_state = other_shown_window->GetWindowState(); | |
| 354 other_window_state->set_bounds_changed_by_user(false); | |
| 355 | |
| 356 if (WindowPositionCanBeManaged(other_shown_window)) { | |
| 357 // Don't override pre auto managed bounds as the current bounds | |
| 358 // may not be original. | |
| 359 if (!other_window_state->pre_auto_manage_window_bounds()) | |
| 360 other_window_state->SetPreAutoManageWindowBounds(other_bounds); | |
| 361 | |
| 362 // Push away the other window after remembering its current position. | |
| 363 if (MoveRectToOneSide(work_area, move_other_right, &other_bounds)) | |
| 364 SetBoundsAnimated(other_shown_window, other_bounds, work_area); | |
| 365 } | |
| 366 } | |
| 367 | |
| 368 // Remember the current location of the window if it's new and push | |
| 369 // it also to the opposite location if needed. Since it is just | |
| 370 // being shown, we do not need to animate it. | |
| 371 gfx::Rect added_bounds = added_window->GetBounds(); | |
| 372 if (!added_window_state->pre_auto_manage_window_bounds()) | |
| 373 added_window_state->SetPreAutoManageWindowBounds(added_bounds); | |
| 374 if (MoveRectToOneSide(work_area, !move_other_right, &added_bounds)) | |
| 375 added_window->SetBounds(added_bounds); | |
| 376 } | |
| 377 | |
| 378 WindowPositioner::WindowPositioner(WmShell* shell) | |
| 379 : shell_(shell), | |
| 380 pop_position_offset_increment_x(0), | |
| 381 pop_position_offset_increment_y(0), | |
| 382 popup_position_offset_from_screen_corner_x(0), | |
| 383 popup_position_offset_from_screen_corner_y(0), | |
| 384 last_popup_position_x_(0), | |
| 385 last_popup_position_y_(0) {} | |
| 386 | |
| 387 WindowPositioner::~WindowPositioner() {} | |
| 388 | |
| 389 gfx::Rect WindowPositioner::GetDefaultWindowBounds( | |
| 390 const display::Display& display) { | |
| 391 const gfx::Rect work_area = display.work_area(); | |
| 392 // There should be a 'desktop' border around the window at the left and right | |
| 393 // side. | |
| 394 int default_width = work_area.width() - 2 * kDesktopBorderSize; | |
| 395 // There should also be a 'desktop' border around the window at the top. | |
| 396 // Since the workspace excludes the tray area we only need one border size. | |
| 397 int default_height = work_area.height() - kDesktopBorderSize; | |
| 398 int offset_x = kDesktopBorderSize; | |
| 399 if (default_width > kMaximumWindowWidth) { | |
| 400 // The window should get centered on the screen and not follow the grid. | |
| 401 offset_x = (work_area.width() - kMaximumWindowWidth) / 2; | |
| 402 default_width = kMaximumWindowWidth; | |
| 403 } | |
| 404 return gfx::Rect(work_area.x() + offset_x, work_area.y() + kDesktopBorderSize, | |
| 405 default_width, default_height); | |
| 406 } | |
| 407 | |
| 408 gfx::Rect WindowPositioner::GetPopupPosition(const gfx::Rect& old_pos) { | |
| 409 int grid = kMinimumWindowOffset; | |
| 410 popup_position_offset_from_screen_corner_x = grid; | |
| 411 popup_position_offset_from_screen_corner_y = grid; | |
| 412 if (!pop_position_offset_increment_x) { | |
| 413 // When the popup position increment is 0, the last popup position | |
| 414 // was not yet initialized. | |
| 415 last_popup_position_x_ = popup_position_offset_from_screen_corner_x; | |
| 416 last_popup_position_y_ = popup_position_offset_from_screen_corner_y; | |
| 417 } | |
| 418 pop_position_offset_increment_x = grid; | |
| 419 pop_position_offset_increment_y = grid; | |
| 420 // We handle the Multi monitor support by retrieving the active window's | |
| 421 // work area. | |
| 422 WmWindow* window = shell_->GetActiveWindow(); | |
| 423 const gfx::Rect work_area = | |
| 424 window && window->IsVisible() | |
| 425 ? window->GetDisplayNearestWindow().work_area() | |
| 426 : display::Screen::GetScreen()->GetPrimaryDisplay().work_area(); | |
| 427 // Only try to reposition the popup when it is not spanning the entire | |
| 428 // screen. | |
| 429 if ((old_pos.width() + popup_position_offset_from_screen_corner_x >= | |
| 430 work_area.width()) || | |
| 431 (old_pos.height() + popup_position_offset_from_screen_corner_y >= | |
| 432 work_area.height())) | |
| 433 return AlignPopupPosition(old_pos, work_area, grid); | |
| 434 const gfx::Rect result = SmartPopupPosition(old_pos, work_area, grid); | |
| 435 if (!result.IsEmpty()) | |
| 436 return AlignPopupPosition(result, work_area, grid); | |
| 437 return NormalPopupPosition(old_pos, work_area); | |
| 438 } | |
| 439 | |
| 440 // static | |
| 441 void WindowPositioner::SetMaximizeFirstWindow(bool maximize) { | |
| 442 maximize_first_window = maximize; | |
| 443 } | |
| 444 | |
| 445 gfx::Rect WindowPositioner::NormalPopupPosition(const gfx::Rect& old_pos, | |
| 446 const gfx::Rect& work_area) { | |
| 447 int w = old_pos.width(); | |
| 448 int h = old_pos.height(); | |
| 449 // Note: The 'last_popup_position' is checked and kept relative to the | |
| 450 // screen size. The offsetting will be done in the last step when the | |
| 451 // target rectangle gets returned. | |
| 452 bool reset = false; | |
| 453 if (last_popup_position_y_ + h > work_area.height() || | |
| 454 last_popup_position_x_ + w > work_area.width()) { | |
| 455 // Popup does not fit on screen. Reset to next diagonal row. | |
| 456 last_popup_position_x_ -= last_popup_position_y_ - | |
| 457 popup_position_offset_from_screen_corner_x - | |
| 458 pop_position_offset_increment_x; | |
| 459 last_popup_position_y_ = popup_position_offset_from_screen_corner_y; | |
| 460 reset = true; | |
| 461 } | |
| 462 if (last_popup_position_x_ + w > work_area.width()) { | |
| 463 // Start again over. | |
| 464 last_popup_position_x_ = popup_position_offset_from_screen_corner_x; | |
| 465 last_popup_position_y_ = popup_position_offset_from_screen_corner_y; | |
| 466 reset = true; | |
| 467 } | |
| 468 int x = last_popup_position_x_; | |
| 469 int y = last_popup_position_y_; | |
| 470 if (!reset) { | |
| 471 last_popup_position_x_ += pop_position_offset_increment_x; | |
| 472 last_popup_position_y_ += pop_position_offset_increment_y; | |
| 473 } | |
| 474 return gfx::Rect(x + work_area.x(), y + work_area.y(), w, h); | |
| 475 } | |
| 476 | |
| 477 gfx::Rect WindowPositioner::SmartPopupPosition(const gfx::Rect& old_pos, | |
| 478 const gfx::Rect& work_area, | |
| 479 int grid) { | |
| 480 const std::vector<WmWindow*> windows = | |
| 481 shell_->mru_window_tracker()->BuildWindowListIgnoreModal(); | |
| 482 | |
| 483 std::vector<const gfx::Rect*> regions; | |
| 484 // Process the window list and check if we can bail immediately. | |
| 485 for (size_t i = 0; i < windows.size(); i++) { | |
| 486 // We only include opaque and visible windows. | |
| 487 if (windows[i] && windows[i]->IsVisible() && windows[i]->GetLayer() && | |
| 488 (windows[i]->GetLayer()->fills_bounds_opaquely() || | |
| 489 windows[i]->GetLayer()->GetTargetOpacity() == 1.0)) { | |
| 490 wm::WindowState* window_state = windows[i]->GetWindowState(); | |
| 491 // When any window is maximized we cannot find any free space. | |
| 492 if (window_state->IsMaximizedOrFullscreenOrPinned()) | |
| 493 return gfx::Rect(0, 0, 0, 0); | |
| 494 if (window_state->IsNormalOrSnapped()) | |
| 495 regions.push_back(&windows[i]->GetBounds()); | |
| 496 } | |
| 497 } | |
| 498 | |
| 499 if (regions.empty()) | |
| 500 return gfx::Rect(0, 0, 0, 0); | |
| 501 | |
| 502 int w = old_pos.width(); | |
| 503 int h = old_pos.height(); | |
| 504 int x_end = work_area.width() / 2; | |
| 505 int x, x_increment; | |
| 506 // We parse for a proper location on the screen. We do this in two runs: | |
| 507 // The first run will start from the left, parsing down, skipping any | |
| 508 // overlapping windows it will encounter until the popup's height can not | |
| 509 // be served anymore. Then the next grid position to the right will be | |
| 510 // taken, and the same cycle starts again. This will be repeated until we | |
| 511 // hit the middle of the screen (or we find a suitable location). | |
| 512 // In the second run we parse beginning from the right corner downwards and | |
| 513 // then to the left. | |
| 514 // When no location was found, an empty rectangle will be returned. | |
| 515 for (int run = 0; run < 2; run++) { | |
| 516 if (run == 0) { // First run: Start left, parse right till mid screen. | |
| 517 x = 0; | |
| 518 x_increment = pop_position_offset_increment_x; | |
| 519 } else { // Second run: Start right, parse left till mid screen. | |
| 520 x = work_area.width() - w; | |
| 521 x_increment = -pop_position_offset_increment_x; | |
| 522 } | |
| 523 // Note: The passing (x,y,w,h) window is always relative to the work area's | |
| 524 // origin. | |
| 525 for (; x_increment > 0 ? (x < x_end) : (x > x_end); x += x_increment) { | |
| 526 int y = 0; | |
| 527 while (y + h <= work_area.height()) { | |
| 528 size_t i; | |
| 529 for (i = 0; i < regions.size(); i++) { | |
| 530 if (regions[i]->Intersects( | |
| 531 gfx::Rect(x + work_area.x(), y + work_area.y(), w, h))) { | |
| 532 y = regions[i]->bottom() - work_area.y(); | |
| 533 break; | |
| 534 } | |
| 535 } | |
| 536 if (i >= regions.size()) | |
| 537 return gfx::Rect(x + work_area.x(), y + work_area.y(), w, h); | |
| 538 } | |
| 539 } | |
| 540 } | |
| 541 return gfx::Rect(0, 0, 0, 0); | |
| 542 } | |
| 543 | |
| 544 gfx::Rect WindowPositioner::AlignPopupPosition(const gfx::Rect& pos, | |
| 545 const gfx::Rect& work_area, | |
| 546 int grid) { | |
| 547 if (grid <= 1) | |
| 548 return pos; | |
| 549 | |
| 550 int x = pos.x() - (pos.x() - work_area.x()) % grid; | |
| 551 int y = pos.y() - (pos.y() - work_area.y()) % grid; | |
| 552 int w = pos.width(); | |
| 553 int h = pos.height(); | |
| 554 | |
| 555 // If the alignment was pushing the window out of the screen, we ignore the | |
| 556 // alignment for that call. | |
| 557 if (abs(pos.right() - work_area.right()) < grid) | |
| 558 x = work_area.right() - w; | |
| 559 if (abs(pos.bottom() - work_area.bottom()) < grid) | |
| 560 y = work_area.bottom() - h; | |
| 561 return gfx::Rect(x, y, w, h); | |
| 562 } | |
| 563 | |
| 564 } // namespace ash | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 2734653002:
chromeos: Move files in //ash/common to //ash (Closed)
