display_manager.cc revision 68043e1e95eeb07d5cae7aca370b26518b0867d6
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/display/display_manager.h" 6 7#include <cmath> 8#include <set> 9#include <string> 10#include <vector> 11 12#include "ash/ash_switches.h" 13#include "ash/display/display_layout_store.h" 14#include "ash/screen_ash.h" 15#include "ash/shell.h" 16#include "base/auto_reset.h" 17#include "base/command_line.h" 18#include "base/logging.h" 19#include "base/strings/string_number_conversions.h" 20#include "base/strings/string_split.h" 21#include "base/strings/stringprintf.h" 22#include "base/strings/utf_string_conversions.h" 23#include "grit/ash_strings.h" 24#include "ui/base/l10n/l10n_util.h" 25#include "ui/gfx/display.h" 26#include "ui/gfx/rect.h" 27#include "ui/gfx/screen.h" 28#include "ui/gfx/size_conversions.h" 29 30#if defined(USE_X11) 31#include "ui/base/x/x11_util.h" 32#endif 33 34#if defined(OS_CHROMEOS) 35#include "ash/display/output_configurator_animation.h" 36#include "base/chromeos/chromeos_version.h" 37#include "chromeos/display/output_configurator.h" 38#endif 39 40#if defined(OS_WIN) 41#include "base/win/windows_version.h" 42#endif 43 44namespace ash { 45namespace internal { 46typedef std::vector<gfx::Display> DisplayList; 47typedef std::vector<DisplayInfo> DisplayInfoList; 48 49namespace { 50 51// The number of pixels to overlap between the primary and secondary displays, 52// in case that the offset value is too large. 53const int kMinimumOverlapForInvalidOffset = 100; 54 55// List of value UI Scale values. Scales for 2x are equivalent to 640, 56// 800, 1024, 1280, 1440, 1600 and 1920 pixel width respectively on 57// 2560 pixel width 2x density display. Please see crbug.com/233375 58// for the full list of resolutions. 59const float kUIScalesFor2x[] = {0.5f, 0.625f, 0.8f, 1.0f, 1.125f, 1.25f, 1.5f}; 60const float kUIScalesFor1280[] = {0.5f, 0.625f, 0.8f, 1.0f, 1.125f }; 61const float kUIScalesFor1366[] = {0.5f, 0.6f, 0.75f, 1.0f, 1.125f }; 62 63struct DisplaySortFunctor { 64 bool operator()(const gfx::Display& a, const gfx::Display& b) { 65 return a.id() < b.id(); 66 } 67}; 68 69struct DisplayInfoSortFunctor { 70 bool operator()(const DisplayInfo& a, const DisplayInfo& b) { 71 return a.id() < b.id(); 72 } 73}; 74 75struct ResolutionMatcher { 76 ResolutionMatcher(const gfx::Size& size) : size(size) {} 77 bool operator()(const Resolution& resolution) { 78 return resolution.size == size; 79 } 80 gfx::Size size; 81}; 82 83struct ScaleComparator { 84 ScaleComparator(float s) : scale(s) {} 85 86 bool operator()(float s) const { 87 const float kEpsilon = 0.0001f; 88 return std::abs(scale - s) < kEpsilon; 89 } 90 float scale; 91}; 92 93gfx::Display& GetInvalidDisplay() { 94 static gfx::Display* invalid_display = new gfx::Display(); 95 return *invalid_display; 96} 97 98void MaybeInitInternalDisplay(int64 id) { 99 CommandLine* command_line = CommandLine::ForCurrentProcess(); 100 if (command_line->HasSwitch(switches::kAshUseFirstDisplayAsInternal)) 101 gfx::Display::SetInternalDisplayId(id); 102} 103 104// Scoped objects used to either create or close the mirror window 105// at specific timing. 106class MirrorWindowUpdater { 107 public: 108 MirrorWindowUpdater(DisplayManager* manager, 109 DisplayManager::Delegate* delegate) 110 : manager_(manager), 111 delegate_(delegate), 112 enabled_(manager_->software_mirroring_enabled() && 113 manager_->mirrored_display().is_valid()) { 114 } 115 116 ~MirrorWindowUpdater() { 117 if (!delegate_) 118 return; 119 120 if (enabled_) { 121 DisplayInfo display_info = manager_->GetDisplayInfo( 122 manager_->mirrored_display().id()); 123 delegate_->CreateOrUpdateMirrorWindow(display_info); 124 } else { 125 delegate_->CloseMirrorWindow(); 126 } 127 } 128 129 bool enabled() const { return enabled_; } 130 131 private: 132 DisplayManager* manager_; 133 DisplayManager::Delegate* delegate_; 134 bool enabled_; 135 DISALLOW_COPY_AND_ASSIGN(MirrorWindowUpdater); 136}; 137 138} // namespace 139 140using std::string; 141using std::vector; 142 143DisplayManager::DisplayManager() 144 : delegate_(NULL), 145 layout_store_(new DisplayLayoutStore), 146 first_display_id_(gfx::Display::kInvalidDisplayID), 147 num_connected_displays_(0), 148 force_bounds_changed_(false), 149 change_display_upon_host_resize_(false), 150 software_mirroring_enabled_(false) { 151#if defined(OS_CHROMEOS) 152 change_display_upon_host_resize_ = !base::chromeos::IsRunningOnChromeOS(); 153#endif 154} 155 156DisplayManager::~DisplayManager() { 157} 158 159// static 160std::vector<float> DisplayManager::GetScalesForDisplay( 161 const DisplayInfo& info) { 162 std::vector<float> ret; 163 if (info.device_scale_factor() == 2.0f) { 164 ret.assign(kUIScalesFor2x, kUIScalesFor2x + arraysize(kUIScalesFor2x)); 165 return ret; 166 } 167 switch (info.bounds_in_native().width()) { 168 case 1280: 169 ret.assign(kUIScalesFor1280, 170 kUIScalesFor1280 + arraysize(kUIScalesFor1280)); 171 break; 172 case 1366: 173 ret.assign(kUIScalesFor1366, 174 kUIScalesFor1366 + arraysize(kUIScalesFor1366)); 175 break; 176 default: 177 ret.assign(kUIScalesFor1280, 178 kUIScalesFor1280 + arraysize(kUIScalesFor1280)); 179#if defined(OS_CHROMEOS) 180 if (base::chromeos::IsRunningOnChromeOS()) 181 NOTREACHED() << "Unknown resolution:" << info.ToString(); 182#endif 183 } 184 return ret; 185} 186 187// static 188float DisplayManager::GetNextUIScale(const DisplayInfo& info, bool up) { 189 float scale = info.ui_scale(); 190 std::vector<float> scales = GetScalesForDisplay(info); 191 for (size_t i = 0; i < scales.size(); ++i) { 192 if (ScaleComparator(scales[i])(scale)) { 193 if (up && i != scales.size() - 1) 194 return scales[i + 1]; 195 if (!up && i != 0) 196 return scales[i - 1]; 197 return scales[i]; 198 } 199 } 200 // Fallback to 1.0f if the |scale| wasn't in the list. 201 return 1.0f; 202} 203 204void DisplayManager::InitFromCommandLine() { 205 DisplayInfoList info_list; 206 CommandLine* command_line = CommandLine::ForCurrentProcess(); 207 const string size_str = 208 command_line->GetSwitchValueASCII(switches::kAshHostWindowBounds); 209 vector<string> parts; 210 base::SplitString(size_str, ',', &parts); 211 for (vector<string>::const_iterator iter = parts.begin(); 212 iter != parts.end(); ++iter) { 213 info_list.push_back(DisplayInfo::CreateFromSpec(*iter)); 214 } 215 if (info_list.size()) 216 MaybeInitInternalDisplay(info_list[0].id()); 217 if (info_list.size() > 1 && 218 command_line->HasSwitch(switches::kAshEnableSoftwareMirroring)) { 219 SetSoftwareMirroring(true); 220 } 221 OnNativeDisplaysChanged(info_list); 222} 223 224// static 225void DisplayManager::UpdateDisplayBoundsForLayoutById( 226 const DisplayLayout& layout, 227 const gfx::Display& primary_display, 228 int64 secondary_display_id) { 229 DCHECK_NE(gfx::Display::kInvalidDisplayID, secondary_display_id); 230 UpdateDisplayBoundsForLayout( 231 layout, primary_display, 232 Shell::GetInstance()->display_manager()-> 233 FindDisplayForId(secondary_display_id)); 234} 235 236bool DisplayManager::IsActiveDisplay(const gfx::Display& display) const { 237 for (DisplayList::const_iterator iter = displays_.begin(); 238 iter != displays_.end(); ++iter) { 239 if ((*iter).id() == display.id()) 240 return true; 241 } 242 return false; 243} 244 245bool DisplayManager::HasInternalDisplay() const { 246 return gfx::Display::InternalDisplayId() != gfx::Display::kInvalidDisplayID; 247} 248 249bool DisplayManager::IsInternalDisplayId(int64 id) const { 250 return gfx::Display::InternalDisplayId() == id; 251} 252 253DisplayLayout DisplayManager::GetCurrentDisplayLayout() { 254 DCHECK_EQ(2U, num_connected_displays()); 255 // Invert if the primary was swapped. 256 if (num_connected_displays() > 1) { 257 DisplayIdPair pair = GetCurrentDisplayIdPair(); 258 return layout_store_->ComputeDisplayLayoutForDisplayIdPair(pair); 259 } 260 NOTREACHED() << "DisplayLayout is requested for single display"; 261 // On release build, just fallback to default instead of blowing up. 262 DisplayLayout layout = 263 layout_store_->default_display_layout(); 264 layout.primary_id = displays_[0].id(); 265 return layout; 266} 267 268DisplayIdPair DisplayManager::GetCurrentDisplayIdPair() const { 269 if (IsMirrored()) { 270 int64 mirrored_id = mirrored_display().id(); 271 return displays_[0].id() == mirrored_id ? 272 std::make_pair(displays_[1].id(), mirrored_id) : 273 std::make_pair(displays_[0].id(), mirrored_id); 274 } else { 275 int64 id_at_zero = displays_[0].id(); 276 if (id_at_zero == gfx::Display::InternalDisplayId() || 277 id_at_zero == first_display_id()) { 278 return std::make_pair(id_at_zero, displays_[1].id()); 279 } else { 280 return std::make_pair(displays_[1].id(), id_at_zero); 281 } 282 } 283} 284 285const gfx::Display& DisplayManager::GetDisplayForId(int64 id) const { 286 gfx::Display* display = 287 const_cast<DisplayManager*>(this)->FindDisplayForId(id); 288 return display ? *display : GetInvalidDisplay(); 289} 290 291const gfx::Display& DisplayManager::FindDisplayContainingPoint( 292 const gfx::Point& point_in_screen) const { 293 for (DisplayList::const_iterator iter = displays_.begin(); 294 iter != displays_.end(); ++iter) { 295 const gfx::Display& display = *iter; 296 if (display.bounds().Contains(point_in_screen)) 297 return display; 298 } 299 return GetInvalidDisplay(); 300} 301 302bool DisplayManager::UpdateWorkAreaOfDisplay(int64 display_id, 303 const gfx::Insets& insets) { 304 gfx::Display* display = FindDisplayForId(display_id); 305 DCHECK(display); 306 gfx::Rect old_work_area = display->work_area(); 307 display->UpdateWorkAreaFromInsets(insets); 308 return old_work_area != display->work_area(); 309} 310 311void DisplayManager::SetOverscanInsets(int64 display_id, 312 const gfx::Insets& insets_in_dip) { 313 display_info_[display_id].SetOverscanInsets(insets_in_dip); 314 DisplayInfoList display_info_list; 315 for (DisplayList::const_iterator iter = displays_.begin(); 316 iter != displays_.end(); ++iter) { 317 display_info_list.push_back(GetDisplayInfo(iter->id())); 318 } 319 AddMirrorDisplayInfoIfAny(&display_info_list); 320 UpdateDisplays(display_info_list); 321} 322 323void DisplayManager::SetDisplayRotation(int64 display_id, 324 gfx::Display::Rotation rotation) { 325 DisplayInfoList display_info_list; 326 for (DisplayList::const_iterator iter = displays_.begin(); 327 iter != displays_.end(); ++iter) { 328 DisplayInfo info = GetDisplayInfo(iter->id()); 329 if (info.id() == display_id) { 330 if (info.rotation() == rotation) 331 return; 332 info.set_rotation(rotation); 333 } 334 display_info_list.push_back(info); 335 } 336 AddMirrorDisplayInfoIfAny(&display_info_list); 337 UpdateDisplays(display_info_list); 338} 339 340void DisplayManager::SetDisplayUIScale(int64 display_id, 341 float ui_scale) { 342 if (!IsDisplayUIScalingEnabled() || 343 gfx::Display::InternalDisplayId() != display_id) { 344 return; 345 } 346 347 DisplayInfoList display_info_list; 348 for (DisplayList::const_iterator iter = displays_.begin(); 349 iter != displays_.end(); ++iter) { 350 DisplayInfo info = GetDisplayInfo(iter->id()); 351 if (info.id() == display_id) { 352 if (info.ui_scale() == ui_scale) 353 return; 354 std::vector<float> scales = GetScalesForDisplay(info); 355 ScaleComparator comparator(ui_scale); 356 if (std::find_if(scales.begin(), scales.end(), comparator) == 357 scales.end()) { 358 return; 359 } 360 info.set_ui_scale(ui_scale); 361 } 362 display_info_list.push_back(info); 363 } 364 AddMirrorDisplayInfoIfAny(&display_info_list); 365 UpdateDisplays(display_info_list); 366} 367 368void DisplayManager::SetDisplayResolution(int64 display_id, 369 const gfx::Size& resolution) { 370 DCHECK_NE(gfx::Display::InternalDisplayId(), display_id); 371 if (gfx::Display::InternalDisplayId() == display_id) 372 return; 373 const DisplayInfo& display_info = GetDisplayInfo(display_id); 374 const std::vector<Resolution>& resolutions = display_info.resolutions(); 375 DCHECK_NE(0u, resolutions.size()); 376 std::vector<Resolution>::const_iterator iter = 377 std::find_if(resolutions.begin(), 378 resolutions.end(), 379 ResolutionMatcher(resolution)); 380 if (iter == resolutions.end()) { 381 LOG(WARNING) << "Unsupported resolution was requested:" 382 << resolution.ToString(); 383 return; 384 } else if (iter == resolutions.begin()) { 385 // The best resolution was set, so forget it. 386 resolutions_.erase(display_id); 387 } else { 388 resolutions_[display_id] = resolution; 389 } 390#if defined(OS_CHROMEOS) && defined(USE_X11) 391 if (base::chromeos::IsRunningOnChromeOS()) 392 Shell::GetInstance()->output_configurator()->ScheduleConfigureOutputs(); 393#endif 394} 395 396void DisplayManager::RegisterDisplayProperty( 397 int64 display_id, 398 gfx::Display::Rotation rotation, 399 float ui_scale, 400 const gfx::Insets* overscan_insets, 401 const gfx::Size& resolution_in_pixels) { 402 if (display_info_.find(display_id) == display_info_.end()) { 403 display_info_[display_id] = 404 DisplayInfo(display_id, std::string(""), false); 405 } 406 407 display_info_[display_id].set_rotation(rotation); 408 // Just in case the preference file was corrupted. 409 if (0.5f <= ui_scale && ui_scale <= 2.0f) 410 display_info_[display_id].set_ui_scale(ui_scale); 411 if (overscan_insets) 412 display_info_[display_id].SetOverscanInsets(*overscan_insets); 413 if (!resolution_in_pixels.IsEmpty()) 414 resolutions_[display_id] = resolution_in_pixels; 415} 416 417bool DisplayManager::GetSelectedResolutionForDisplayId( 418 int64 id, 419 gfx::Size* resolution_out) const { 420 std::map<int64, gfx::Size>::const_iterator iter = 421 resolutions_.find(id); 422 if (iter == resolutions_.end()) 423 return false; 424 *resolution_out = iter->second; 425 return true; 426} 427 428bool DisplayManager::IsDisplayUIScalingEnabled() const { 429 return GetDisplayIdForUIScaling() != gfx::Display::kInvalidDisplayID; 430} 431 432gfx::Insets DisplayManager::GetOverscanInsets(int64 display_id) const { 433 std::map<int64, DisplayInfo>::const_iterator it = 434 display_info_.find(display_id); 435 return (it != display_info_.end()) ? 436 it->second.overscan_insets_in_dip() : gfx::Insets(); 437} 438 439void DisplayManager::OnNativeDisplaysChanged( 440 const std::vector<DisplayInfo>& updated_displays) { 441 if (updated_displays.empty()) { 442 // If the device is booted without display, or chrome is started 443 // without --ash-host-window-bounds on linux desktop, use the 444 // default display. 445 if (displays_.empty()) { 446 std::vector<DisplayInfo> init_displays; 447 init_displays.push_back(DisplayInfo::CreateFromSpec(std::string())); 448 MaybeInitInternalDisplay(init_displays[0].id()); 449 OnNativeDisplaysChanged(init_displays); 450 } else { 451 // Otherwise don't update the displays when all displays are disconnected. 452 // This happens when: 453 // - the device is idle and powerd requested to turn off all displays. 454 // - the device is suspended. (kernel turns off all displays) 455 // - the internal display's brightness is set to 0 and no external 456 // display is connected. 457 // - the internal display's brightness is 0 and external display is 458 // disconnected. 459 // The display will be updated when one of displays is turned on, and the 460 // display list will be updated correctly. 461 } 462 return; 463 } 464 first_display_id_ = updated_displays[0].id(); 465 std::set<gfx::Point> origins; 466 467 if (updated_displays.size() == 1) { 468 VLOG(1) << "OnNativeDisplaysChanged(1):" << updated_displays[0].ToString(); 469 } else { 470 VLOG(1) << "OnNativeDisplaysChanged(" << updated_displays.size() 471 << ") [0]=" << updated_displays[0].ToString() 472 << ", [1]=" << updated_displays[1].ToString(); 473 } 474 475 bool internal_display_connected = false; 476 num_connected_displays_ = updated_displays.size(); 477 mirrored_display_ = gfx::Display(); 478 DisplayInfoList new_display_info_list; 479 for (DisplayInfoList::const_iterator iter = updated_displays.begin(); 480 iter != updated_displays.end(); 481 ++iter) { 482 if (!internal_display_connected) 483 internal_display_connected = IsInternalDisplayId(iter->id()); 484 // Mirrored monitors have the same origins. 485 gfx::Point origin = iter->bounds_in_native().origin(); 486 if (origins.find(origin) != origins.end()) { 487 InsertAndUpdateDisplayInfo(*iter); 488 mirrored_display_ = CreateDisplayFromDisplayInfoById(iter->id()); 489 } else { 490 origins.insert(origin); 491 new_display_info_list.push_back(*iter); 492 } 493 } 494 if (HasInternalDisplay() && 495 !internal_display_connected && 496 display_info_.find(gfx::Display::InternalDisplayId()) == 497 display_info_.end()) { 498 DisplayInfo internal_display_info( 499 gfx::Display::InternalDisplayId(), 500 l10n_util::GetStringUTF8(IDS_ASH_INTERNAL_DISPLAY_NAME), 501 false /*Internal display must not have overscan */); 502 internal_display_info.SetBounds(gfx::Rect(0, 0, 800, 600)); 503 display_info_[gfx::Display::InternalDisplayId()] = internal_display_info; 504 } 505 UpdateDisplays(new_display_info_list); 506} 507 508void DisplayManager::UpdateDisplays() { 509 DisplayInfoList display_info_list; 510 for (DisplayList::const_iterator iter = displays_.begin(); 511 iter != displays_.end(); ++iter) { 512 display_info_list.push_back(GetDisplayInfo(iter->id())); 513 } 514 AddMirrorDisplayInfoIfAny(&display_info_list); 515 UpdateDisplays(display_info_list); 516} 517 518void DisplayManager::UpdateDisplays( 519 const std::vector<DisplayInfo>& updated_display_info_list) { 520#if defined(OS_WIN) 521 if (base::win::GetVersion() >= base::win::VERSION_WIN8) { 522 DCHECK_EQ(1u, updated_display_info_list.size()) << 523 "Multiple display test does not work on Win8 bots. Please " 524 "skip (don't disable) the test using SupportsMultipleDisplays()"; 525 } 526#endif 527 528 DisplayInfoList new_display_info_list = updated_display_info_list; 529 std::sort(displays_.begin(), displays_.end(), DisplaySortFunctor()); 530 std::sort(new_display_info_list.begin(), 531 new_display_info_list.end(), 532 DisplayInfoSortFunctor()); 533 DisplayList removed_displays; 534 std::vector<size_t> changed_display_indices; 535 std::vector<size_t> added_display_indices; 536 537 DisplayList::iterator curr_iter = displays_.begin(); 538 DisplayInfoList::const_iterator new_info_iter = new_display_info_list.begin(); 539 540 DisplayList new_displays; 541 542 // Use the internal display or 1st as the mirror source, then scale 543 // the root window so that it matches the external display's 544 // resolution. This is necessary in order for scaling to work while 545 // mirrored. 546 int64 mirrored_display_id = gfx::Display::kInvalidDisplayID; 547 if (software_mirroring_enabled_ && new_display_info_list.size() == 2) 548 mirrored_display_id = new_display_info_list[1].id(); 549 550 while (curr_iter != displays_.end() || 551 new_info_iter != new_display_info_list.end()) { 552 if (new_info_iter != new_display_info_list.end() && 553 mirrored_display_id == new_info_iter->id()) { 554 DisplayInfo info = *new_info_iter; 555 info.SetOverscanInsets(gfx::Insets()); 556 InsertAndUpdateDisplayInfo(info); 557 mirrored_display_ = CreateDisplayFromDisplayInfoById(new_info_iter->id()); 558 ++new_info_iter; 559 // Remove existing external dispaly if it is going to be mirrored. 560 if (curr_iter != displays_.end() && 561 curr_iter->id() == mirrored_display_id) { 562 removed_displays.push_back(*curr_iter); 563 ++curr_iter; 564 } 565 continue; 566 } 567 568 if (curr_iter == displays_.end()) { 569 // more displays in new list. 570 added_display_indices.push_back(new_displays.size()); 571 InsertAndUpdateDisplayInfo(*new_info_iter); 572 new_displays.push_back( 573 CreateDisplayFromDisplayInfoById(new_info_iter->id())); 574 ++new_info_iter; 575 } else if (new_info_iter == new_display_info_list.end()) { 576 // more displays in current list. 577 removed_displays.push_back(*curr_iter); 578 ++curr_iter; 579 } else if (curr_iter->id() == new_info_iter->id()) { 580 const gfx::Display& current_display = *curr_iter; 581 // Copy the info because |CreateDisplayFromInfo| updates the instance. 582 const DisplayInfo current_display_info = 583 GetDisplayInfo(current_display.id()); 584 InsertAndUpdateDisplayInfo(*new_info_iter); 585 gfx::Display new_display = 586 CreateDisplayFromDisplayInfoById(new_info_iter->id()); 587 const DisplayInfo& new_display_info = GetDisplayInfo(new_display.id()); 588 589 bool host_window_bounds_changed = 590 current_display_info.bounds_in_native() != 591 new_display_info.bounds_in_native(); 592 593 if (force_bounds_changed_ || 594 host_window_bounds_changed || 595 (current_display.device_scale_factor() != 596 new_display.device_scale_factor()) || 597 (current_display_info.size_in_pixel() != 598 new_display.GetSizeInPixel()) || 599 (current_display.rotation() != new_display.rotation())) { 600 601 changed_display_indices.push_back(new_displays.size()); 602 } 603 604 new_display.UpdateWorkAreaFromInsets(current_display.GetWorkAreaInsets()); 605 new_displays.push_back(new_display); 606 ++curr_iter; 607 ++new_info_iter; 608 } else if (curr_iter->id() < new_info_iter->id()) { 609 // more displays in current list between ids, which means it is deleted. 610 removed_displays.push_back(*curr_iter); 611 ++curr_iter; 612 } else { 613 // more displays in new list between ids, which means it is added. 614 added_display_indices.push_back(new_displays.size()); 615 InsertAndUpdateDisplayInfo(*new_info_iter); 616 new_displays.push_back( 617 CreateDisplayFromDisplayInfoById(new_info_iter->id())); 618 ++new_info_iter; 619 } 620 } 621 622 scoped_ptr<MirrorWindowUpdater> mirror_window_updater( 623 new MirrorWindowUpdater(this, delegate_)); 624 625 // Do not update |displays_| if there's nothing to be updated. Without this, 626 // it will not update the display layout, which causes the bug 627 // http://crbug.com/155948. 628 if (changed_display_indices.empty() && added_display_indices.empty() && 629 removed_displays.empty()) { 630 return; 631 } 632 if (delegate_) 633 delegate_->PreDisplayConfigurationChange(!removed_displays.empty()); 634 635 size_t updated_index; 636 if (UpdateSecondaryDisplayBoundsForLayout(&new_displays, &updated_index) && 637 std::find(added_display_indices.begin(), 638 added_display_indices.end(), 639 updated_index) == added_display_indices.end() && 640 std::find(changed_display_indices.begin(), 641 changed_display_indices.end(), 642 updated_index) == changed_display_indices.end()) { 643 changed_display_indices.push_back(updated_index); 644 } 645 646 displays_ = new_displays; 647 648 base::AutoReset<bool> resetter(&change_display_upon_host_resize_, false); 649 650 // Temporarily add displays to be removed because display object 651 // being removed are accessed during shutting down the root. 652 displays_.insert(displays_.end(), removed_displays.begin(), 653 removed_displays.end()); 654 655 for (DisplayList::const_reverse_iterator iter = removed_displays.rbegin(); 656 iter != removed_displays.rend(); ++iter) { 657 Shell::GetInstance()->screen()->NotifyDisplayRemoved(displays_.back()); 658 displays_.pop_back(); 659 } 660 // Close the mirror window here to avoid creating two compositor on 661 // one display. 662 if (!mirror_window_updater->enabled()) 663 mirror_window_updater.reset(); 664 for (std::vector<size_t>::iterator iter = added_display_indices.begin(); 665 iter != added_display_indices.end(); ++iter) { 666 Shell::GetInstance()->screen()->NotifyDisplayAdded(displays_[*iter]); 667 } 668 // Create the mirror window after all displays are added so that 669 // it can mirror the display newly added. This can happen when switching 670 // from dock mode to software mirror mode. 671 mirror_window_updater.reset(); 672 for (std::vector<size_t>::iterator iter = changed_display_indices.begin(); 673 iter != changed_display_indices.end(); ++iter) { 674 Shell::GetInstance()->screen()->NotifyBoundsChanged(displays_[*iter]); 675 } 676 if (delegate_) 677 delegate_->PostDisplayConfigurationChange(); 678 679#if defined(USE_X11) && defined(OS_CHROMEOS) 680 if (!changed_display_indices.empty() && base::chromeos::IsRunningOnChromeOS()) 681 ui::ClearX11DefaultRootWindow(); 682#endif 683} 684 685const gfx::Display& DisplayManager::GetDisplayAt(size_t index) const { 686 DCHECK_LT(index, displays_.size()); 687 return displays_[index]; 688} 689 690const gfx::Display& DisplayManager::GetPrimaryDisplayCandidate() const { 691 if (GetNumDisplays() == 1) { 692 return displays_[0]; 693 } 694 DisplayLayout layout = layout_store_->GetRegisteredDisplayLayout( 695 GetCurrentDisplayIdPair()); 696 return GetDisplayForId(layout.primary_id); 697} 698 699size_t DisplayManager::GetNumDisplays() const { 700 return displays_.size(); 701} 702 703bool DisplayManager::IsMirrored() const { 704 return mirrored_display_.id() != gfx::Display::kInvalidDisplayID; 705} 706 707const DisplayInfo& DisplayManager::GetDisplayInfo(int64 display_id) const { 708 std::map<int64, DisplayInfo>::const_iterator iter = 709 display_info_.find(display_id); 710 CHECK(iter != display_info_.end()) << display_id; 711 return iter->second; 712} 713 714std::string DisplayManager::GetDisplayNameForId(int64 id) { 715 if (id == gfx::Display::kInvalidDisplayID) 716 return l10n_util::GetStringUTF8(IDS_ASH_STATUS_TRAY_UNKNOWN_DISPLAY_NAME); 717 718 std::map<int64, DisplayInfo>::const_iterator iter = display_info_.find(id); 719 if (iter != display_info_.end() && !iter->second.name().empty()) 720 return iter->second.name(); 721 722 return base::StringPrintf("Display %d", static_cast<int>(id)); 723} 724 725int64 DisplayManager::GetDisplayIdForUIScaling() const { 726 // UI Scaling is effective only on internal display. 727 int64 display_id = gfx::Display::InternalDisplayId(); 728#if defined(OS_WIN) 729 display_id = first_display_id(); 730#endif 731 return display_id; 732} 733 734void DisplayManager::SetMirrorMode(bool mirrored) { 735 if (num_connected_displays() <= 1) 736 return; 737 738#if defined(OS_CHROMEOS) 739 if (base::chromeos::IsRunningOnChromeOS()) { 740 chromeos::OutputState new_state = mirrored ? 741 chromeos::STATE_DUAL_MIRROR : chromeos::STATE_DUAL_EXTENDED; 742 Shell::GetInstance()->output_configurator()->SetDisplayMode(new_state); 743 return; 744 } 745#endif 746 SetSoftwareMirroring(mirrored); 747 DisplayInfoList display_info_list; 748 int count = 0; 749 for (std::map<int64, DisplayInfo>::const_iterator iter = 750 display_info_.begin(); 751 count < 2; ++iter, ++count) { 752 display_info_list.push_back(GetDisplayInfo(iter->second.id())); 753 } 754 UpdateDisplays(display_info_list); 755#if defined(OS_CHROMEOS) 756 if (Shell::GetInstance()->output_configurator_animation()) { 757 Shell::GetInstance()->output_configurator_animation()-> 758 StartFadeInAnimation(); 759 } 760#endif 761} 762 763void DisplayManager::AddRemoveDisplay() { 764 DCHECK(!displays_.empty()); 765 std::vector<DisplayInfo> new_display_info_list; 766 const DisplayInfo& first_display = GetDisplayInfo(displays_[0].id()); 767 new_display_info_list.push_back(first_display); 768 // Add if there is only one display connected. 769 if (num_connected_displays() == 1) { 770 // Layout the 2nd display below the primary as with the real device. 771 gfx::Rect host_bounds = first_display.bounds_in_native(); 772 new_display_info_list.push_back(DisplayInfo::CreateFromSpec( 773 base::StringPrintf( 774 "%d+%d-500x400", host_bounds.x(), host_bounds.bottom()))); 775 } 776 num_connected_displays_ = new_display_info_list.size(); 777 mirrored_display_ = gfx::Display(); 778 UpdateDisplays(new_display_info_list); 779} 780 781void DisplayManager::ToggleDisplayScaleFactor() { 782 DCHECK(!displays_.empty()); 783 std::vector<DisplayInfo> new_display_info_list; 784 for (DisplayList::const_iterator iter = displays_.begin(); 785 iter != displays_.end(); ++iter) { 786 DisplayInfo display_info = GetDisplayInfo(iter->id()); 787 display_info.set_device_scale_factor( 788 display_info.device_scale_factor() == 1.0f ? 2.0f : 1.0f); 789 new_display_info_list.push_back(display_info); 790 } 791 AddMirrorDisplayInfoIfAny(&new_display_info_list); 792 UpdateDisplays(new_display_info_list); 793} 794 795void DisplayManager::SetSoftwareMirroring(bool enabled) { 796 software_mirroring_enabled_ = enabled; 797 mirrored_display_ = gfx::Display(); 798} 799 800bool DisplayManager::UpdateDisplayBounds(int64 display_id, 801 const gfx::Rect& new_bounds) { 802 if (change_display_upon_host_resize_) { 803 display_info_[display_id].SetBounds(new_bounds); 804 // Don't notify observers if the mirrored window has changed. 805 if (software_mirroring_enabled_ && mirrored_display_.id() == display_id) 806 return false; 807 gfx::Display* display = FindDisplayForId(display_id); 808 display->SetSize(display_info_[display_id].size_in_pixel()); 809 Shell::GetInstance()->screen()->NotifyBoundsChanged(*display); 810 return true; 811 } 812 return false; 813} 814 815void DisplayManager::CreateMirrorWindowIfAny() { 816 MirrorWindowUpdater updater(this, delegate_); 817} 818 819gfx::Display* DisplayManager::FindDisplayForId(int64 id) { 820 for (DisplayList::iterator iter = displays_.begin(); 821 iter != displays_.end(); ++iter) { 822 if ((*iter).id() == id) 823 return &(*iter); 824 } 825 DLOG(WARNING) << "Could not find display:" << id; 826 return NULL; 827} 828 829void DisplayManager::AddMirrorDisplayInfoIfAny( 830 std::vector<DisplayInfo>* display_info_list) { 831 if (software_mirroring_enabled_ && mirrored_display_.is_valid()) 832 display_info_list->push_back(GetDisplayInfo(mirrored_display_.id())); 833} 834 835void DisplayManager::InsertAndUpdateDisplayInfo(const DisplayInfo& new_info) { 836 std::map<int64, DisplayInfo>::iterator info = 837 display_info_.find(new_info.id()); 838 if (info != display_info_.end()) 839 info->second.Copy(new_info); 840 else { 841 display_info_[new_info.id()] = new_info; 842 display_info_[new_info.id()].set_native(false); 843 } 844 display_info_[new_info.id()].UpdateDisplaySize(); 845} 846 847gfx::Display DisplayManager::CreateDisplayFromDisplayInfoById(int64 id) { 848 DCHECK(display_info_.find(id) != display_info_.end()); 849 const DisplayInfo& display_info = display_info_[id]; 850 851 gfx::Display new_display(display_info.id()); 852 gfx::Rect bounds_in_native(display_info.size_in_pixel()); 853 854 // Simply set the origin to (0,0). The primary display's origin is 855 // always (0,0) and the secondary display's bounds will be updated 856 // in |UpdateSecondaryDisplayBoundsForLayout| called in |UpdateDisplay|. 857 new_display.SetScaleAndBounds( 858 display_info.device_scale_factor(), gfx::Rect(bounds_in_native.size())); 859 new_display.set_rotation(display_info.rotation()); 860 return new_display; 861} 862 863bool DisplayManager::UpdateSecondaryDisplayBoundsForLayout( 864 DisplayList* displays, 865 size_t* updated_index) const { 866 if (displays->size() != 2U) 867 return false; 868 869 int64 id_at_zero = displays->at(0).id(); 870 DisplayIdPair pair = 871 (id_at_zero == first_display_id_ || 872 id_at_zero == gfx::Display::InternalDisplayId()) ? 873 std::make_pair(id_at_zero, displays->at(1).id()) : 874 std::make_pair(displays->at(1).id(), id_at_zero) ; 875 DisplayLayout layout = 876 layout_store_->ComputeDisplayLayoutForDisplayIdPair(pair); 877 878 // Ignore if a user has a old format (should be extremely rare) 879 // and this will be replaced with DCHECK. 880 if (layout.primary_id != gfx::Display::kInvalidDisplayID) { 881 size_t primary_index, secondary_index; 882 if (displays->at(0).id() == layout.primary_id) { 883 primary_index = 0; 884 secondary_index = 1; 885 } else { 886 primary_index = 1; 887 secondary_index = 0; 888 } 889 // This function may be called before the secondary display is 890 // registered. The bounds is empty in that case and will 891 // return true. 892 gfx::Rect bounds = 893 GetDisplayForId(displays->at(secondary_index).id()).bounds(); 894 UpdateDisplayBoundsForLayout( 895 layout, displays->at(primary_index), &displays->at(secondary_index)); 896 *updated_index = secondary_index; 897 return bounds != displays->at(secondary_index).bounds(); 898 } 899 return false; 900} 901 902 903// static 904void DisplayManager::UpdateDisplayBoundsForLayout( 905 const DisplayLayout& layout, 906 const gfx::Display& primary_display, 907 gfx::Display* secondary_display) { 908 DCHECK_EQ("0,0", primary_display.bounds().origin().ToString()); 909 910 const gfx::Rect& primary_bounds = primary_display.bounds(); 911 const gfx::Rect& secondary_bounds = secondary_display->bounds(); 912 gfx::Point new_secondary_origin = primary_bounds.origin(); 913 914 DisplayLayout::Position position = layout.position; 915 916 // Ignore the offset in case the secondary display doesn't share edges with 917 // the primary display. 918 int offset = layout.offset; 919 if (position == DisplayLayout::TOP || position == DisplayLayout::BOTTOM) { 920 offset = std::min( 921 offset, primary_bounds.width() - kMinimumOverlapForInvalidOffset); 922 offset = std::max( 923 offset, -secondary_bounds.width() + kMinimumOverlapForInvalidOffset); 924 } else { 925 offset = std::min( 926 offset, primary_bounds.height() - kMinimumOverlapForInvalidOffset); 927 offset = std::max( 928 offset, -secondary_bounds.height() + kMinimumOverlapForInvalidOffset); 929 } 930 switch (position) { 931 case DisplayLayout::TOP: 932 new_secondary_origin.Offset(offset, -secondary_bounds.height()); 933 break; 934 case DisplayLayout::RIGHT: 935 new_secondary_origin.Offset(primary_bounds.width(), offset); 936 break; 937 case DisplayLayout::BOTTOM: 938 new_secondary_origin.Offset(offset, primary_bounds.height()); 939 break; 940 case DisplayLayout::LEFT: 941 new_secondary_origin.Offset(-secondary_bounds.width(), offset); 942 break; 943 } 944 gfx::Insets insets = secondary_display->GetWorkAreaInsets(); 945 secondary_display->set_bounds( 946 gfx::Rect(new_secondary_origin, secondary_bounds.size())); 947 secondary_display->UpdateWorkAreaFromInsets(insets); 948} 949 950} // namespace internal 951} // namespace ash 952