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/display/screen_ash.h"
15 #include "ash/screen_util.h"
16 #include "ash/shell.h"
17 #include "base/auto_reset.h"
18 #include "base/command_line.h"
19 #include "base/logging.h"
20 #include "base/metrics/histogram.h"
21 #include "base/strings/string_number_conversions.h"
22 #include "base/strings/string_split.h"
23 #include "base/strings/stringprintf.h"
24 #include "base/strings/utf_string_conversions.h"
25 #include "grit/ash_strings.h"
26 #include "ui/base/l10n/l10n_util.h"
27 #include "ui/base/layout.h"
28 #include "ui/base/resource/resource_bundle.h"
29 #include "ui/gfx/display.h"
30 #include "ui/gfx/display_observer.h"
31 #include "ui/gfx/rect.h"
32 #include "ui/gfx/screen.h"
33 #include "ui/gfx/size_conversions.h"
34
35 #if defined(USE_X11)
36 #include "ui/base/x/x11_util.h"
37 #endif
38
39 #if defined(OS_CHROMEOS)
40 #include "ash/display/display_configurator_animation.h"
41 #include "base/sys_info.h"
42 #endif
43
44 #if defined(OS_WIN)
45 #include "base/win/windows_version.h"
46 #endif
47
48 namespace ash {
49 typedef std::vector<gfx::Display> DisplayList;
50 typedef std::vector<DisplayInfo> DisplayInfoList;
51
52 namespace {
53
54 // We need to keep this in order for unittests to tell if
55 // the object in gfx::Screen::GetScreenByType is for shutdown.
56 gfx::Screen* screen_for_shutdown = NULL;
57
58 // The number of pixels to overlap between the primary and secondary displays,
59 // in case that the offset value is too large.
60 const int kMinimumOverlapForInvalidOffset = 100;
61
62 // List of value UI Scale values. Scales for 2x are equivalent to 640,
63 // 800, 1024, 1280, 1440, 1600 and 1920 pixel width respectively on
64 // 2560 pixel width 2x density display. Please see crbug.com/233375
65 // for the full list of resolutions.
66 const float kUIScalesFor2x[] =
67 {0.5f, 0.625f, 0.8f, 1.0f, 1.125f, 1.25f, 1.5f, 2.0f};
68 const float kUIScalesFor1280[] = {0.5f, 0.625f, 0.8f, 1.0f, 1.125f };
69 const float kUIScalesFor1366[] = {0.5f, 0.6f, 0.75f, 1.0f, 1.125f };
70
71 struct DisplaySortFunctor {
operator ()ash::__anon2e9b56030111::DisplaySortFunctor72 bool operator()(const gfx::Display& a, const gfx::Display& b) {
73 return a.id() < b.id();
74 }
75 };
76
77 struct DisplayInfoSortFunctor {
operator ()ash::__anon2e9b56030111::DisplayInfoSortFunctor78 bool operator()(const DisplayInfo& a, const DisplayInfo& b) {
79 return a.id() < b.id();
80 }
81 };
82
83 struct DisplayModeMatcher {
DisplayModeMatcherash::__anon2e9b56030111::DisplayModeMatcher84 DisplayModeMatcher(const gfx::Size& size) : size(size) {}
operator ()ash::__anon2e9b56030111::DisplayModeMatcher85 bool operator()(const DisplayMode& mode) { return mode.size == size; }
86 gfx::Size size;
87 };
88
89 struct ScaleComparator {
ScaleComparatorash::__anon2e9b56030111::ScaleComparator90 explicit ScaleComparator(float s) : scale(s) {}
91
operator ()ash::__anon2e9b56030111::ScaleComparator92 bool operator()(float s) const {
93 const float kEpsilon = 0.0001f;
94 return std::abs(scale - s) < kEpsilon;
95 }
96 float scale;
97 };
98
GetInvalidDisplay()99 gfx::Display& GetInvalidDisplay() {
100 static gfx::Display* invalid_display = new gfx::Display();
101 return *invalid_display;
102 }
103
MaybeInitInternalDisplay(int64 id)104 void MaybeInitInternalDisplay(int64 id) {
105 CommandLine* command_line = CommandLine::ForCurrentProcess();
106 if (command_line->HasSwitch(switches::kAshUseFirstDisplayAsInternal))
107 gfx::Display::SetInternalDisplayId(id);
108 }
109
110 // Scoped objects used to either create or close the non desktop window
111 // at specific timing.
112 class NonDesktopDisplayUpdater {
113 public:
NonDesktopDisplayUpdater(DisplayManager * manager,DisplayManager::Delegate * delegate)114 NonDesktopDisplayUpdater(DisplayManager* manager,
115 DisplayManager::Delegate* delegate)
116 : manager_(manager),
117 delegate_(delegate),
118 enabled_(manager_->second_display_mode() != DisplayManager::EXTENDED &&
119 manager_->non_desktop_display().is_valid()) {
120 }
121
~NonDesktopDisplayUpdater()122 ~NonDesktopDisplayUpdater() {
123 if (!delegate_)
124 return;
125
126 if (enabled_) {
127 DisplayInfo display_info = manager_->GetDisplayInfo(
128 manager_->non_desktop_display().id());
129 delegate_->CreateOrUpdateNonDesktopDisplay(display_info);
130 } else {
131 delegate_->CloseNonDesktopDisplay();
132 }
133 }
134
enabled() const135 bool enabled() const { return enabled_; }
136
137 private:
138 DisplayManager* manager_;
139 DisplayManager::Delegate* delegate_;
140 bool enabled_;
141 DISALLOW_COPY_AND_ASSIGN(NonDesktopDisplayUpdater);
142 };
143
144 } // namespace
145
146 using std::string;
147 using std::vector;
148
DisplayManager()149 DisplayManager::DisplayManager()
150 : delegate_(NULL),
151 screen_ash_(new ScreenAsh),
152 screen_(screen_ash_.get()),
153 layout_store_(new DisplayLayoutStore),
154 first_display_id_(gfx::Display::kInvalidDisplayID),
155 num_connected_displays_(0),
156 force_bounds_changed_(false),
157 change_display_upon_host_resize_(false),
158 second_display_mode_(EXTENDED),
159 mirrored_display_id_(gfx::Display::kInvalidDisplayID) {
160 #if defined(OS_CHROMEOS)
161 change_display_upon_host_resize_ = !base::SysInfo::IsRunningOnChromeOS();
162 #endif
163 DisplayInfo::SetAllowUpgradeToHighDPI(
164 ui::ResourceBundle::GetSharedInstance().GetMaxScaleFactor() ==
165 ui::SCALE_FACTOR_200P);
166
167 gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_ALTERNATE,
168 screen_ash_.get());
169 gfx::Screen* current_native =
170 gfx::Screen::GetScreenByType(gfx::SCREEN_TYPE_NATIVE);
171 // If there is no native, or the native was for shutdown,
172 // use ash's screen.
173 if (!current_native ||
174 current_native == screen_for_shutdown) {
175 gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE,
176 screen_ash_.get());
177 }
178 }
179
~DisplayManager()180 DisplayManager::~DisplayManager() {
181 }
182
183 // static
GetScalesForDisplay(const DisplayInfo & info)184 std::vector<float> DisplayManager::GetScalesForDisplay(
185 const DisplayInfo& info) {
186 std::vector<float> ret;
187 if (info.device_scale_factor() == 2.0f) {
188 ret.assign(kUIScalesFor2x, kUIScalesFor2x + arraysize(kUIScalesFor2x));
189 return ret;
190 }
191 switch (info.bounds_in_native().width()) {
192 case 1280:
193 ret.assign(kUIScalesFor1280,
194 kUIScalesFor1280 + arraysize(kUIScalesFor1280));
195 break;
196 case 1366:
197 ret.assign(kUIScalesFor1366,
198 kUIScalesFor1366 + arraysize(kUIScalesFor1366));
199 break;
200 default:
201 ret.assign(kUIScalesFor1280,
202 kUIScalesFor1280 + arraysize(kUIScalesFor1280));
203 #if defined(OS_CHROMEOS)
204 if (base::SysInfo::IsRunningOnChromeOS())
205 NOTREACHED() << "Unknown resolution:" << info.ToString();
206 #endif
207 }
208 return ret;
209 }
210
211 // static
GetNextUIScale(const DisplayInfo & info,bool up)212 float DisplayManager::GetNextUIScale(const DisplayInfo& info, bool up) {
213 float scale = info.configured_ui_scale();
214 std::vector<float> scales = GetScalesForDisplay(info);
215 for (size_t i = 0; i < scales.size(); ++i) {
216 if (ScaleComparator(scales[i])(scale)) {
217 if (up && i != scales.size() - 1)
218 return scales[i + 1];
219 if (!up && i != 0)
220 return scales[i - 1];
221 return scales[i];
222 }
223 }
224 // Fallback to 1.0f if the |scale| wasn't in the list.
225 return 1.0f;
226 }
227
InitFromCommandLine()228 bool DisplayManager::InitFromCommandLine() {
229 DisplayInfoList info_list;
230 CommandLine* command_line = CommandLine::ForCurrentProcess();
231 if (!command_line->HasSwitch(switches::kAshHostWindowBounds))
232 return false;
233 const string size_str =
234 command_line->GetSwitchValueASCII(switches::kAshHostWindowBounds);
235 vector<string> parts;
236 base::SplitString(size_str, ',', &parts);
237 for (vector<string>::const_iterator iter = parts.begin();
238 iter != parts.end(); ++iter) {
239 info_list.push_back(DisplayInfo::CreateFromSpec(*iter));
240 }
241 MaybeInitInternalDisplay(info_list[0].id());
242 if (info_list.size() > 1 &&
243 command_line->HasSwitch(switches::kAshEnableSoftwareMirroring)) {
244 SetSecondDisplayMode(MIRRORING);
245 }
246 OnNativeDisplaysChanged(info_list);
247 return true;
248 }
249
InitDefaultDisplay()250 void DisplayManager::InitDefaultDisplay() {
251 DisplayInfoList info_list;
252 info_list.push_back(DisplayInfo::CreateFromSpec(std::string()));
253 MaybeInitInternalDisplay(info_list[0].id());
254 OnNativeDisplaysChanged(info_list);
255 }
256
257 // static
UpdateDisplayBoundsForLayoutById(const DisplayLayout & layout,const gfx::Display & primary_display,int64 secondary_display_id)258 void DisplayManager::UpdateDisplayBoundsForLayoutById(
259 const DisplayLayout& layout,
260 const gfx::Display& primary_display,
261 int64 secondary_display_id) {
262 DCHECK_NE(gfx::Display::kInvalidDisplayID, secondary_display_id);
263 UpdateDisplayBoundsForLayout(
264 layout, primary_display,
265 Shell::GetInstance()->display_manager()->
266 FindDisplayForId(secondary_display_id));
267 }
268
IsActiveDisplay(const gfx::Display & display) const269 bool DisplayManager::IsActiveDisplay(const gfx::Display& display) const {
270 for (DisplayList::const_iterator iter = displays_.begin();
271 iter != displays_.end(); ++iter) {
272 if ((*iter).id() == display.id())
273 return true;
274 }
275 return false;
276 }
277
HasInternalDisplay() const278 bool DisplayManager::HasInternalDisplay() const {
279 return gfx::Display::InternalDisplayId() != gfx::Display::kInvalidDisplayID;
280 }
281
IsInternalDisplayId(int64 id) const282 bool DisplayManager::IsInternalDisplayId(int64 id) const {
283 return gfx::Display::InternalDisplayId() == id;
284 }
285
GetCurrentDisplayLayout()286 DisplayLayout DisplayManager::GetCurrentDisplayLayout() {
287 DCHECK_EQ(2U, num_connected_displays());
288 // Invert if the primary was swapped.
289 if (num_connected_displays() > 1) {
290 DisplayIdPair pair = GetCurrentDisplayIdPair();
291 return layout_store_->ComputeDisplayLayoutForDisplayIdPair(pair);
292 }
293 NOTREACHED() << "DisplayLayout is requested for single display";
294 // On release build, just fallback to default instead of blowing up.
295 DisplayLayout layout =
296 layout_store_->default_display_layout();
297 layout.primary_id = displays_[0].id();
298 return layout;
299 }
300
GetCurrentDisplayIdPair() const301 DisplayIdPair DisplayManager::GetCurrentDisplayIdPair() const {
302 if (IsMirrored()) {
303 if (software_mirroring_enabled()) {
304 CHECK_EQ(2u, num_connected_displays());
305 // This comment is to make it easy to distinguish the crash
306 // between two checks.
307 CHECK_EQ(1u, displays_.size());
308 }
309 return std::make_pair(displays_[0].id(), mirrored_display_id_);
310 } else {
311 CHECK_GE(2u, displays_.size());
312 int64 id_at_zero = displays_[0].id();
313 if (id_at_zero == gfx::Display::InternalDisplayId() ||
314 id_at_zero == first_display_id()) {
315 return std::make_pair(id_at_zero, displays_[1].id());
316 } else {
317 return std::make_pair(displays_[1].id(), id_at_zero);
318 }
319 }
320 }
321
SetLayoutForCurrentDisplays(const DisplayLayout & layout_relative_to_primary)322 void DisplayManager::SetLayoutForCurrentDisplays(
323 const DisplayLayout& layout_relative_to_primary) {
324 DCHECK_EQ(2U, GetNumDisplays());
325 if (GetNumDisplays() < 2)
326 return;
327 const gfx::Display& primary = screen_->GetPrimaryDisplay();
328 const DisplayIdPair pair = GetCurrentDisplayIdPair();
329 // Invert if the primary was swapped.
330 DisplayLayout to_set = pair.first == primary.id() ?
331 layout_relative_to_primary : layout_relative_to_primary.Invert();
332
333 DisplayLayout current_layout =
334 layout_store_->GetRegisteredDisplayLayout(pair);
335 if (to_set.position != current_layout.position ||
336 to_set.offset != current_layout.offset) {
337 to_set.primary_id = primary.id();
338 layout_store_->RegisterLayoutForDisplayIdPair(
339 pair.first, pair.second, to_set);
340 if (delegate_)
341 delegate_->PreDisplayConfigurationChange(false);
342 // PreDisplayConfigurationChange(false);
343 // TODO(oshima): Call UpdateDisplays instead.
344 const DisplayLayout layout = GetCurrentDisplayLayout();
345 UpdateDisplayBoundsForLayoutById(
346 layout, primary,
347 ScreenUtil::GetSecondaryDisplay().id());
348
349 // Primary's bounds stay the same. Just notify bounds change
350 // on the secondary.
351 screen_ash_->NotifyMetricsChanged(
352 ScreenUtil::GetSecondaryDisplay(),
353 gfx::DisplayObserver::DISPLAY_METRIC_BOUNDS |
354 gfx::DisplayObserver::DISPLAY_METRIC_WORK_AREA);
355 if (delegate_)
356 delegate_->PostDisplayConfigurationChange();
357 }
358 }
359
GetDisplayForId(int64 id) const360 const gfx::Display& DisplayManager::GetDisplayForId(int64 id) const {
361 gfx::Display* display =
362 const_cast<DisplayManager*>(this)->FindDisplayForId(id);
363 return display ? *display : GetInvalidDisplay();
364 }
365
FindDisplayContainingPoint(const gfx::Point & point_in_screen) const366 const gfx::Display& DisplayManager::FindDisplayContainingPoint(
367 const gfx::Point& point_in_screen) const {
368 for (DisplayList::const_iterator iter = displays_.begin();
369 iter != displays_.end(); ++iter) {
370 const gfx::Display& display = *iter;
371 if (display.bounds().Contains(point_in_screen))
372 return display;
373 }
374 return GetInvalidDisplay();
375 }
376
UpdateWorkAreaOfDisplay(int64 display_id,const gfx::Insets & insets)377 bool DisplayManager::UpdateWorkAreaOfDisplay(int64 display_id,
378 const gfx::Insets& insets) {
379 gfx::Display* display = FindDisplayForId(display_id);
380 DCHECK(display);
381 gfx::Rect old_work_area = display->work_area();
382 display->UpdateWorkAreaFromInsets(insets);
383 return old_work_area != display->work_area();
384 }
385
SetOverscanInsets(int64 display_id,const gfx::Insets & insets_in_dip)386 void DisplayManager::SetOverscanInsets(int64 display_id,
387 const gfx::Insets& insets_in_dip) {
388 display_info_[display_id].SetOverscanInsets(insets_in_dip);
389 DisplayInfoList display_info_list;
390 for (DisplayList::const_iterator iter = displays_.begin();
391 iter != displays_.end(); ++iter) {
392 display_info_list.push_back(GetDisplayInfo(iter->id()));
393 }
394 AddMirrorDisplayInfoIfAny(&display_info_list);
395 UpdateDisplays(display_info_list);
396 }
397
SetDisplayRotation(int64 display_id,gfx::Display::Rotation rotation)398 void DisplayManager::SetDisplayRotation(int64 display_id,
399 gfx::Display::Rotation rotation) {
400 DisplayInfoList display_info_list;
401 for (DisplayList::const_iterator iter = displays_.begin();
402 iter != displays_.end(); ++iter) {
403 DisplayInfo info = GetDisplayInfo(iter->id());
404 if (info.id() == display_id) {
405 if (info.rotation() == rotation)
406 return;
407 info.set_rotation(rotation);
408 }
409 display_info_list.push_back(info);
410 }
411 AddMirrorDisplayInfoIfAny(&display_info_list);
412 if (virtual_keyboard_root_window_enabled() &&
413 display_id == non_desktop_display_.id()) {
414 DisplayInfo info = GetDisplayInfo(display_id);
415 info.set_rotation(rotation);
416 display_info_list.push_back(info);
417 }
418 UpdateDisplays(display_info_list);
419 }
420
SetDisplayUIScale(int64 display_id,float ui_scale)421 void DisplayManager::SetDisplayUIScale(int64 display_id,
422 float ui_scale) {
423 if (!IsDisplayUIScalingEnabled() ||
424 gfx::Display::InternalDisplayId() != display_id) {
425 return;
426 }
427
428 DisplayInfoList display_info_list;
429 for (DisplayList::const_iterator iter = displays_.begin();
430 iter != displays_.end(); ++iter) {
431 DisplayInfo info = GetDisplayInfo(iter->id());
432 if (info.id() == display_id) {
433 if (info.configured_ui_scale() == ui_scale)
434 return;
435 std::vector<float> scales = GetScalesForDisplay(info);
436 ScaleComparator comparator(ui_scale);
437 if (std::find_if(scales.begin(), scales.end(), comparator) ==
438 scales.end()) {
439 return;
440 }
441 info.set_configured_ui_scale(ui_scale);
442 }
443 display_info_list.push_back(info);
444 }
445 AddMirrorDisplayInfoIfAny(&display_info_list);
446 UpdateDisplays(display_info_list);
447 }
448
SetDisplayResolution(int64 display_id,const gfx::Size & resolution)449 void DisplayManager::SetDisplayResolution(int64 display_id,
450 const gfx::Size& resolution) {
451 DCHECK_NE(gfx::Display::InternalDisplayId(), display_id);
452 if (gfx::Display::InternalDisplayId() == display_id)
453 return;
454 const DisplayInfo& display_info = GetDisplayInfo(display_id);
455 const std::vector<DisplayMode>& modes = display_info.display_modes();
456 DCHECK_NE(0u, modes.size());
457 std::vector<DisplayMode>::const_iterator iter =
458 std::find_if(modes.begin(), modes.end(), DisplayModeMatcher(resolution));
459 if (iter == modes.end()) {
460 LOG(WARNING) << "Unsupported resolution was requested:"
461 << resolution.ToString();
462 return;
463 }
464 display_modes_[display_id] = *iter;
465 #if defined(OS_CHROMEOS)
466 if (base::SysInfo::IsRunningOnChromeOS())
467 Shell::GetInstance()->display_configurator()->OnConfigurationChanged();
468 #endif
469 }
470
RegisterDisplayProperty(int64 display_id,gfx::Display::Rotation rotation,float ui_scale,const gfx::Insets * overscan_insets,const gfx::Size & resolution_in_pixels,ui::ColorCalibrationProfile color_profile)471 void DisplayManager::RegisterDisplayProperty(
472 int64 display_id,
473 gfx::Display::Rotation rotation,
474 float ui_scale,
475 const gfx::Insets* overscan_insets,
476 const gfx::Size& resolution_in_pixels,
477 ui::ColorCalibrationProfile color_profile) {
478 if (display_info_.find(display_id) == display_info_.end())
479 display_info_[display_id] = DisplayInfo(display_id, std::string(), false);
480
481 display_info_[display_id].set_rotation(rotation);
482 display_info_[display_id].SetColorProfile(color_profile);
483 // Just in case the preference file was corrupted.
484 if (0.5f <= ui_scale && ui_scale <= 2.0f)
485 display_info_[display_id].set_configured_ui_scale(ui_scale);
486 if (overscan_insets)
487 display_info_[display_id].SetOverscanInsets(*overscan_insets);
488 if (!resolution_in_pixels.IsEmpty()) {
489 // Default refresh rate, until OnNativeDisplaysChanged() updates us with the
490 // actual display info, is 60 Hz.
491 display_modes_[display_id] =
492 DisplayMode(resolution_in_pixels, 60.0f, false, false);
493 }
494 }
495
GetSelectedModeForDisplayId(int64 id,DisplayMode * mode_out) const496 bool DisplayManager::GetSelectedModeForDisplayId(int64 id,
497 DisplayMode* mode_out) const {
498 std::map<int64, DisplayMode>::const_iterator iter = display_modes_.find(id);
499 if (iter == display_modes_.end())
500 return false;
501 *mode_out = iter->second;
502 return true;
503 }
504
IsDisplayUIScalingEnabled() const505 bool DisplayManager::IsDisplayUIScalingEnabled() const {
506 return GetDisplayIdForUIScaling() != gfx::Display::kInvalidDisplayID;
507 }
508
GetOverscanInsets(int64 display_id) const509 gfx::Insets DisplayManager::GetOverscanInsets(int64 display_id) const {
510 std::map<int64, DisplayInfo>::const_iterator it =
511 display_info_.find(display_id);
512 return (it != display_info_.end()) ?
513 it->second.overscan_insets_in_dip() : gfx::Insets();
514 }
515
SetColorCalibrationProfile(int64 display_id,ui::ColorCalibrationProfile profile)516 void DisplayManager::SetColorCalibrationProfile(
517 int64 display_id,
518 ui::ColorCalibrationProfile profile) {
519 #if defined(OS_CHROMEOS)
520 if (!display_info_[display_id].IsColorProfileAvailable(profile))
521 return;
522
523 if (delegate_)
524 delegate_->PreDisplayConfigurationChange(false);
525 // Just sets color profile if it's not running on ChromeOS (like tests).
526 if (!base::SysInfo::IsRunningOnChromeOS() ||
527 Shell::GetInstance()->display_configurator()->SetColorCalibrationProfile(
528 display_id, profile)) {
529 display_info_[display_id].SetColorProfile(profile);
530 UMA_HISTOGRAM_ENUMERATION(
531 "ChromeOS.Display.ColorProfile", profile, ui::NUM_COLOR_PROFILES);
532 }
533 if (delegate_)
534 delegate_->PostDisplayConfigurationChange();
535 #endif
536 }
537
OnNativeDisplaysChanged(const std::vector<DisplayInfo> & updated_displays)538 void DisplayManager::OnNativeDisplaysChanged(
539 const std::vector<DisplayInfo>& updated_displays) {
540 if (updated_displays.empty()) {
541 VLOG(1) << "OnNativeDisplayChanged(0): # of current displays="
542 << displays_.size();
543 // If the device is booted without display, or chrome is started
544 // without --ash-host-window-bounds on linux desktop, use the
545 // default display.
546 if (displays_.empty()) {
547 std::vector<DisplayInfo> init_displays;
548 init_displays.push_back(DisplayInfo::CreateFromSpec(std::string()));
549 MaybeInitInternalDisplay(init_displays[0].id());
550 OnNativeDisplaysChanged(init_displays);
551 } else {
552 // Otherwise don't update the displays when all displays are disconnected.
553 // This happens when:
554 // - the device is idle and powerd requested to turn off all displays.
555 // - the device is suspended. (kernel turns off all displays)
556 // - the internal display's brightness is set to 0 and no external
557 // display is connected.
558 // - the internal display's brightness is 0 and external display is
559 // disconnected.
560 // The display will be updated when one of displays is turned on, and the
561 // display list will be updated correctly.
562 }
563 return;
564 }
565 first_display_id_ = updated_displays[0].id();
566 std::set<gfx::Point> origins;
567
568 if (updated_displays.size() == 1) {
569 VLOG(1) << "OnNativeDisplaysChanged(1):" << updated_displays[0].ToString();
570 } else {
571 VLOG(1) << "OnNativeDisplaysChanged(" << updated_displays.size()
572 << ") [0]=" << updated_displays[0].ToString()
573 << ", [1]=" << updated_displays[1].ToString();
574 }
575
576 bool internal_display_connected = false;
577 num_connected_displays_ = updated_displays.size();
578 mirrored_display_id_ = gfx::Display::kInvalidDisplayID;
579 non_desktop_display_ = gfx::Display();
580 DisplayInfoList new_display_info_list;
581 for (DisplayInfoList::const_iterator iter = updated_displays.begin();
582 iter != updated_displays.end();
583 ++iter) {
584 if (!internal_display_connected)
585 internal_display_connected = IsInternalDisplayId(iter->id());
586 // Mirrored monitors have the same origins.
587 gfx::Point origin = iter->bounds_in_native().origin();
588 if (origins.find(origin) != origins.end()) {
589 InsertAndUpdateDisplayInfo(*iter);
590 mirrored_display_id_ = iter->id();
591 } else {
592 origins.insert(origin);
593 new_display_info_list.push_back(*iter);
594 }
595
596 const gfx::Size& resolution = iter->bounds_in_native().size();
597 const std::vector<DisplayMode>& display_modes = iter->display_modes();
598 // This is empty the displays are initialized from InitFromCommandLine.
599 if (!display_modes.size())
600 continue;
601 std::vector<DisplayMode>::const_iterator display_modes_iter =
602 std::find_if(display_modes.begin(),
603 display_modes.end(),
604 DisplayModeMatcher(resolution));
605 // Update the actual resolution selected as the resolution request may fail.
606 if (display_modes_iter == display_modes.end())
607 display_modes_.erase(iter->id());
608 else if (display_modes_.find(iter->id()) != display_modes_.end())
609 display_modes_[iter->id()] = *display_modes_iter;
610 }
611 if (HasInternalDisplay() &&
612 !internal_display_connected &&
613 display_info_.find(gfx::Display::InternalDisplayId()) ==
614 display_info_.end()) {
615 DisplayInfo internal_display_info(
616 gfx::Display::InternalDisplayId(),
617 l10n_util::GetStringUTF8(IDS_ASH_INTERNAL_DISPLAY_NAME),
618 false /*Internal display must not have overscan */);
619 internal_display_info.SetBounds(gfx::Rect(0, 0, 800, 600));
620 display_info_[gfx::Display::InternalDisplayId()] = internal_display_info;
621 }
622 UpdateDisplays(new_display_info_list);
623 }
624
UpdateDisplays()625 void DisplayManager::UpdateDisplays() {
626 DisplayInfoList display_info_list;
627 for (DisplayList::const_iterator iter = displays_.begin();
628 iter != displays_.end(); ++iter) {
629 display_info_list.push_back(GetDisplayInfo(iter->id()));
630 }
631 AddMirrorDisplayInfoIfAny(&display_info_list);
632 UpdateDisplays(display_info_list);
633 }
634
UpdateDisplays(const std::vector<DisplayInfo> & updated_display_info_list)635 void DisplayManager::UpdateDisplays(
636 const std::vector<DisplayInfo>& updated_display_info_list) {
637 #if defined(OS_WIN)
638 DCHECK_EQ(1u, updated_display_info_list.size()) <<
639 ": Multiple display test does not work on Windows bots. Please "
640 "skip (don't disable) the test using SupportsMultipleDisplays()";
641 #endif
642
643 DisplayInfoList new_display_info_list = updated_display_info_list;
644 std::sort(displays_.begin(), displays_.end(), DisplaySortFunctor());
645 std::sort(new_display_info_list.begin(),
646 new_display_info_list.end(),
647 DisplayInfoSortFunctor());
648 DisplayList removed_displays;
649 std::map<size_t, uint32_t> display_changes;
650 std::vector<size_t> added_display_indices;
651
652 DisplayList::iterator curr_iter = displays_.begin();
653 DisplayInfoList::const_iterator new_info_iter = new_display_info_list.begin();
654
655 DisplayList new_displays;
656
657 // Use the internal display or 1st as the mirror source, then scale
658 // the root window so that it matches the external display's
659 // resolution. This is necessary in order for scaling to work while
660 // mirrored.
661 int64 non_desktop_display_id = gfx::Display::kInvalidDisplayID;
662
663 if (second_display_mode_ != EXTENDED && new_display_info_list.size() == 2) {
664 bool zero_is_source =
665 first_display_id_ == new_display_info_list[0].id() ||
666 gfx::Display::InternalDisplayId() == new_display_info_list[0].id();
667 if (second_display_mode_ == MIRRORING) {
668 mirrored_display_id_ = new_display_info_list[zero_is_source ? 1 : 0].id();
669 non_desktop_display_id = mirrored_display_id_;
670 } else {
671 // TODO(oshima|bshe): The virtual keyboard is currently assigned to
672 // the 1st display.
673 non_desktop_display_id =
674 new_display_info_list[zero_is_source ? 0 : 1].id();
675 }
676 }
677
678 while (curr_iter != displays_.end() ||
679 new_info_iter != new_display_info_list.end()) {
680 if (new_info_iter != new_display_info_list.end() &&
681 non_desktop_display_id == new_info_iter->id()) {
682 DisplayInfo info = *new_info_iter;
683 info.SetOverscanInsets(gfx::Insets());
684 InsertAndUpdateDisplayInfo(info);
685 non_desktop_display_ =
686 CreateDisplayFromDisplayInfoById(non_desktop_display_id);
687 ++new_info_iter;
688 // Remove existing external display if it is going to be used as
689 // non desktop.
690 if (curr_iter != displays_.end() &&
691 curr_iter->id() == non_desktop_display_id) {
692 removed_displays.push_back(*curr_iter);
693 ++curr_iter;
694 }
695 continue;
696 }
697
698 if (curr_iter == displays_.end()) {
699 // more displays in new list.
700 added_display_indices.push_back(new_displays.size());
701 InsertAndUpdateDisplayInfo(*new_info_iter);
702 new_displays.push_back(
703 CreateDisplayFromDisplayInfoById(new_info_iter->id()));
704 ++new_info_iter;
705 } else if (new_info_iter == new_display_info_list.end()) {
706 // more displays in current list.
707 removed_displays.push_back(*curr_iter);
708 ++curr_iter;
709 } else if (curr_iter->id() == new_info_iter->id()) {
710 const gfx::Display& current_display = *curr_iter;
711 // Copy the info because |CreateDisplayFromInfo| updates the instance.
712 const DisplayInfo current_display_info =
713 GetDisplayInfo(current_display.id());
714 InsertAndUpdateDisplayInfo(*new_info_iter);
715 gfx::Display new_display =
716 CreateDisplayFromDisplayInfoById(new_info_iter->id());
717 const DisplayInfo& new_display_info = GetDisplayInfo(new_display.id());
718
719 uint32_t metrics = gfx::DisplayObserver::DISPLAY_METRIC_NONE;
720
721 // At that point the new Display objects we have are not entirely updated,
722 // they are missing the translation related to the Display disposition in
723 // the layout.
724 // Using display.bounds() and display.work_area() would fail most of the
725 // time.
726 if (force_bounds_changed_ || (current_display_info.bounds_in_native() !=
727 new_display_info.bounds_in_native()) ||
728 (current_display_info.size_in_pixel() !=
729 new_display.GetSizeInPixel())) {
730 metrics |= gfx::DisplayObserver::DISPLAY_METRIC_BOUNDS |
731 gfx::DisplayObserver::DISPLAY_METRIC_WORK_AREA;
732 }
733
734 if (current_display.device_scale_factor() !=
735 new_display.device_scale_factor()) {
736 metrics |= gfx::DisplayObserver::DISPLAY_METRIC_DEVICE_SCALE_FACTOR;
737 }
738
739 if (current_display.rotation() != new_display.rotation())
740 metrics |= gfx::DisplayObserver::DISPLAY_METRIC_ROTATION;
741
742 if (metrics != gfx::DisplayObserver::DISPLAY_METRIC_NONE) {
743 display_changes.insert(
744 std::pair<size_t, uint32_t>(new_displays.size(), metrics));
745 }
746
747 new_display.UpdateWorkAreaFromInsets(current_display.GetWorkAreaInsets());
748 new_displays.push_back(new_display);
749 ++curr_iter;
750 ++new_info_iter;
751 } else if (curr_iter->id() < new_info_iter->id()) {
752 // more displays in current list between ids, which means it is deleted.
753 removed_displays.push_back(*curr_iter);
754 ++curr_iter;
755 } else {
756 // more displays in new list between ids, which means it is added.
757 added_display_indices.push_back(new_displays.size());
758 InsertAndUpdateDisplayInfo(*new_info_iter);
759 new_displays.push_back(
760 CreateDisplayFromDisplayInfoById(new_info_iter->id()));
761 ++new_info_iter;
762 }
763 }
764
765 scoped_ptr<NonDesktopDisplayUpdater> non_desktop_display_updater(
766 new NonDesktopDisplayUpdater(this, delegate_));
767
768 // Do not update |displays_| if there's nothing to be updated. Without this,
769 // it will not update the display layout, which causes the bug
770 // http://crbug.com/155948.
771 if (display_changes.empty() && added_display_indices.empty() &&
772 removed_displays.empty()) {
773 return;
774 }
775 // Clear focus if the display has been removed, but don't clear focus if
776 // the destkop has been moved from one display to another
777 // (mirror -> docked, docked -> single internal).
778 bool clear_focus =
779 !removed_displays.empty() &&
780 !(removed_displays.size() == 1 && added_display_indices.size() == 1);
781 if (delegate_)
782 delegate_->PreDisplayConfigurationChange(clear_focus);
783
784 size_t updated_index;
785 if (UpdateSecondaryDisplayBoundsForLayout(&new_displays, &updated_index) &&
786 std::find(added_display_indices.begin(),
787 added_display_indices.end(),
788 updated_index) == added_display_indices.end()) {
789 uint32_t metrics = gfx::DisplayObserver::DISPLAY_METRIC_BOUNDS |
790 gfx::DisplayObserver::DISPLAY_METRIC_WORK_AREA;
791 if (display_changes.find(updated_index) != display_changes.end())
792 metrics |= display_changes[updated_index];
793
794 display_changes[updated_index] = metrics;
795 }
796
797 displays_ = new_displays;
798
799 base::AutoReset<bool> resetter(&change_display_upon_host_resize_, false);
800
801 // Temporarily add displays to be removed because display object
802 // being removed are accessed during shutting down the root.
803 displays_.insert(displays_.end(), removed_displays.begin(),
804 removed_displays.end());
805
806 for (DisplayList::const_reverse_iterator iter = removed_displays.rbegin();
807 iter != removed_displays.rend(); ++iter) {
808 screen_ash_->NotifyDisplayRemoved(displays_.back());
809 displays_.pop_back();
810 }
811 // Close the non desktop window here to avoid creating two compositor on
812 // one display.
813 if (!non_desktop_display_updater->enabled())
814 non_desktop_display_updater.reset();
815 for (std::vector<size_t>::iterator iter = added_display_indices.begin();
816 iter != added_display_indices.end(); ++iter) {
817 screen_ash_->NotifyDisplayAdded(displays_[*iter]);
818 }
819 // Create the non destkop window after all displays are added so that
820 // it can mirror the display newly added. This can happen when switching
821 // from dock mode to software mirror mode.
822 non_desktop_display_updater.reset();
823 for (std::map<size_t, uint32_t>::iterator iter = display_changes.begin();
824 iter != display_changes.end();
825 ++iter) {
826 screen_ash_->NotifyMetricsChanged(displays_[iter->first], iter->second);
827 }
828 if (delegate_)
829 delegate_->PostDisplayConfigurationChange();
830
831 #if defined(USE_X11) && defined(OS_CHROMEOS)
832 if (!display_changes.empty() && base::SysInfo::IsRunningOnChromeOS())
833 ui::ClearX11DefaultRootWindow();
834 #endif
835 }
836
GetDisplayAt(size_t index) const837 const gfx::Display& DisplayManager::GetDisplayAt(size_t index) const {
838 DCHECK_LT(index, displays_.size());
839 return displays_[index];
840 }
841
GetPrimaryDisplayCandidate() const842 const gfx::Display& DisplayManager::GetPrimaryDisplayCandidate() const {
843 if (GetNumDisplays() == 1)
844 return displays_[0];
845 DisplayLayout layout = layout_store_->GetRegisteredDisplayLayout(
846 GetCurrentDisplayIdPair());
847 return GetDisplayForId(layout.primary_id);
848 }
849
GetNumDisplays() const850 size_t DisplayManager::GetNumDisplays() const {
851 return displays_.size();
852 }
853
IsMirrored() const854 bool DisplayManager::IsMirrored() const {
855 return mirrored_display_id_ != gfx::Display::kInvalidDisplayID;
856 }
857
GetDisplayInfo(int64 display_id) const858 const DisplayInfo& DisplayManager::GetDisplayInfo(int64 display_id) const {
859 DCHECK_NE(gfx::Display::kInvalidDisplayID, display_id);
860
861 std::map<int64, DisplayInfo>::const_iterator iter =
862 display_info_.find(display_id);
863 CHECK(iter != display_info_.end()) << display_id;
864 return iter->second;
865 }
866
GetDisplayNameForId(int64 id)867 std::string DisplayManager::GetDisplayNameForId(int64 id) {
868 if (id == gfx::Display::kInvalidDisplayID)
869 return l10n_util::GetStringUTF8(IDS_ASH_STATUS_TRAY_UNKNOWN_DISPLAY_NAME);
870
871 std::map<int64, DisplayInfo>::const_iterator iter = display_info_.find(id);
872 if (iter != display_info_.end() && !iter->second.name().empty())
873 return iter->second.name();
874
875 return base::StringPrintf("Display %d", static_cast<int>(id));
876 }
877
GetDisplayIdForUIScaling() const878 int64 DisplayManager::GetDisplayIdForUIScaling() const {
879 // UI Scaling is effective only on internal display.
880 int64 display_id = gfx::Display::InternalDisplayId();
881 #if defined(OS_WIN)
882 display_id = first_display_id();
883 #endif
884 return display_id;
885 }
886
SetMirrorMode(bool mirrored)887 void DisplayManager::SetMirrorMode(bool mirrored) {
888 if (num_connected_displays() <= 1)
889 return;
890
891 #if defined(OS_CHROMEOS)
892 if (base::SysInfo::IsRunningOnChromeOS()) {
893 ui::MultipleDisplayState new_state =
894 mirrored ? ui::MULTIPLE_DISPLAY_STATE_DUAL_MIRROR :
895 ui::MULTIPLE_DISPLAY_STATE_DUAL_EXTENDED;
896 Shell::GetInstance()->display_configurator()->SetDisplayMode(new_state);
897 return;
898 }
899 #endif
900 // This is fallback path to emulate mirroroing on desktop.
901 SetSecondDisplayMode(mirrored ? MIRRORING : EXTENDED);
902 DisplayInfoList display_info_list;
903 int count = 0;
904 for (std::map<int64, DisplayInfo>::const_iterator iter =
905 display_info_.begin();
906 count < 2; ++iter, ++count) {
907 display_info_list.push_back(GetDisplayInfo(iter->second.id()));
908 }
909 UpdateDisplays(display_info_list);
910 #if defined(OS_CHROMEOS)
911 if (Shell::GetInstance()->display_configurator_animation()) {
912 Shell::GetInstance()->display_configurator_animation()->
913 StartFadeInAnimation();
914 }
915 #endif
916 }
917
AddRemoveDisplay()918 void DisplayManager::AddRemoveDisplay() {
919 DCHECK(!displays_.empty());
920 std::vector<DisplayInfo> new_display_info_list;
921 const DisplayInfo& first_display = GetDisplayInfo(displays_[0].id());
922 new_display_info_list.push_back(first_display);
923 // Add if there is only one display connected.
924 if (num_connected_displays() == 1) {
925 // Layout the 2nd display below the primary as with the real device.
926 gfx::Rect host_bounds = first_display.bounds_in_native();
927 new_display_info_list.push_back(DisplayInfo::CreateFromSpec(
928 base::StringPrintf(
929 "%d+%d-500x400", host_bounds.x(), host_bounds.bottom())));
930 }
931 num_connected_displays_ = new_display_info_list.size();
932 mirrored_display_id_ = gfx::Display::kInvalidDisplayID;
933 non_desktop_display_ = gfx::Display();
934 UpdateDisplays(new_display_info_list);
935 }
936
ToggleDisplayScaleFactor()937 void DisplayManager::ToggleDisplayScaleFactor() {
938 DCHECK(!displays_.empty());
939 std::vector<DisplayInfo> new_display_info_list;
940 for (DisplayList::const_iterator iter = displays_.begin();
941 iter != displays_.end(); ++iter) {
942 DisplayInfo display_info = GetDisplayInfo(iter->id());
943 display_info.set_device_scale_factor(
944 display_info.device_scale_factor() == 1.0f ? 2.0f : 1.0f);
945 new_display_info_list.push_back(display_info);
946 }
947 AddMirrorDisplayInfoIfAny(&new_display_info_list);
948 UpdateDisplays(new_display_info_list);
949 }
950
951 #if defined(OS_CHROMEOS)
SetSoftwareMirroring(bool enabled)952 void DisplayManager::SetSoftwareMirroring(bool enabled) {
953 // TODO(oshima|bshe): Support external display on the system
954 // that has virtual keyboard display.
955 if (second_display_mode_ == VIRTUAL_KEYBOARD)
956 return;
957 SetSecondDisplayMode(enabled ? MIRRORING : EXTENDED);
958 }
959
SoftwareMirroringEnabled() const960 bool DisplayManager::SoftwareMirroringEnabled() const {
961 return software_mirroring_enabled();
962 }
963 #endif
964
SetSecondDisplayMode(SecondDisplayMode mode)965 void DisplayManager::SetSecondDisplayMode(SecondDisplayMode mode) {
966 second_display_mode_ = mode;
967 mirrored_display_id_ = gfx::Display::kInvalidDisplayID;
968 non_desktop_display_ = gfx::Display();
969 }
970
UpdateDisplayBounds(int64 display_id,const gfx::Rect & new_bounds)971 bool DisplayManager::UpdateDisplayBounds(int64 display_id,
972 const gfx::Rect& new_bounds) {
973 if (change_display_upon_host_resize_) {
974 display_info_[display_id].SetBounds(new_bounds);
975 // Don't notify observers if the mirrored window has changed.
976 if (software_mirroring_enabled() && mirrored_display_id_ == display_id)
977 return false;
978 gfx::Display* display = FindDisplayForId(display_id);
979 display->SetSize(display_info_[display_id].size_in_pixel());
980 screen_ash_->NotifyMetricsChanged(
981 *display, gfx::DisplayObserver::DISPLAY_METRIC_BOUNDS);
982 return true;
983 }
984 return false;
985 }
986
CreateMirrorWindowIfAny()987 void DisplayManager::CreateMirrorWindowIfAny() {
988 NonDesktopDisplayUpdater updater(this, delegate_);
989 }
990
CreateScreenForShutdown() const991 void DisplayManager::CreateScreenForShutdown() const {
992 bool native_is_ash =
993 gfx::Screen::GetScreenByType(gfx::SCREEN_TYPE_NATIVE) ==
994 screen_ash_.get();
995 delete screen_for_shutdown;
996 screen_for_shutdown = screen_ash_->CloneForShutdown();
997 gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_ALTERNATE,
998 screen_for_shutdown);
999 if (native_is_ash) {
1000 gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE,
1001 screen_for_shutdown);
1002 }
1003 }
1004
FindDisplayForId(int64 id)1005 gfx::Display* DisplayManager::FindDisplayForId(int64 id) {
1006 for (DisplayList::iterator iter = displays_.begin();
1007 iter != displays_.end(); ++iter) {
1008 if ((*iter).id() == id)
1009 return &(*iter);
1010 }
1011 DLOG(WARNING) << "Could not find display:" << id;
1012 return NULL;
1013 }
1014
AddMirrorDisplayInfoIfAny(std::vector<DisplayInfo> * display_info_list)1015 void DisplayManager::AddMirrorDisplayInfoIfAny(
1016 std::vector<DisplayInfo>* display_info_list) {
1017 if (software_mirroring_enabled() && IsMirrored())
1018 display_info_list->push_back(GetDisplayInfo(mirrored_display_id_));
1019 }
1020
InsertAndUpdateDisplayInfo(const DisplayInfo & new_info)1021 void DisplayManager::InsertAndUpdateDisplayInfo(const DisplayInfo& new_info) {
1022 std::map<int64, DisplayInfo>::iterator info =
1023 display_info_.find(new_info.id());
1024 if (info != display_info_.end()) {
1025 info->second.Copy(new_info);
1026 } else {
1027 display_info_[new_info.id()] = new_info;
1028 display_info_[new_info.id()].set_native(false);
1029 }
1030 display_info_[new_info.id()].UpdateDisplaySize();
1031
1032 OnDisplayInfoUpdated(display_info_[new_info.id()]);
1033 }
1034
OnDisplayInfoUpdated(const DisplayInfo & display_info)1035 void DisplayManager::OnDisplayInfoUpdated(const DisplayInfo& display_info) {
1036 #if defined(OS_CHROMEOS)
1037 ui::ColorCalibrationProfile color_profile = display_info.color_profile();
1038 if (color_profile != ui::COLOR_PROFILE_STANDARD) {
1039 Shell::GetInstance()->display_configurator()->SetColorCalibrationProfile(
1040 display_info.id(), color_profile);
1041 }
1042 #endif
1043 }
1044
CreateDisplayFromDisplayInfoById(int64 id)1045 gfx::Display DisplayManager::CreateDisplayFromDisplayInfoById(int64 id) {
1046 DCHECK(display_info_.find(id) != display_info_.end());
1047 const DisplayInfo& display_info = display_info_[id];
1048
1049 gfx::Display new_display(display_info.id());
1050 gfx::Rect bounds_in_native(display_info.size_in_pixel());
1051 float device_scale_factor = display_info.GetEffectiveDeviceScaleFactor();
1052
1053 // Simply set the origin to (0,0). The primary display's origin is
1054 // always (0,0) and the secondary display's bounds will be updated
1055 // in |UpdateSecondaryDisplayBoundsForLayout| called in |UpdateDisplay|.
1056 new_display.SetScaleAndBounds(
1057 device_scale_factor, gfx::Rect(bounds_in_native.size()));
1058 new_display.set_rotation(display_info.rotation());
1059 new_display.set_touch_support(display_info.touch_support());
1060 return new_display;
1061 }
1062
UpdateSecondaryDisplayBoundsForLayout(DisplayList * displays,size_t * updated_index) const1063 bool DisplayManager::UpdateSecondaryDisplayBoundsForLayout(
1064 DisplayList* displays,
1065 size_t* updated_index) const {
1066 if (displays->size() != 2U)
1067 return false;
1068
1069 int64 id_at_zero = displays->at(0).id();
1070 DisplayIdPair pair =
1071 (id_at_zero == first_display_id_ ||
1072 id_at_zero == gfx::Display::InternalDisplayId()) ?
1073 std::make_pair(id_at_zero, displays->at(1).id()) :
1074 std::make_pair(displays->at(1).id(), id_at_zero);
1075 DisplayLayout layout =
1076 layout_store_->ComputeDisplayLayoutForDisplayIdPair(pair);
1077
1078 // Ignore if a user has a old format (should be extremely rare)
1079 // and this will be replaced with DCHECK.
1080 if (layout.primary_id != gfx::Display::kInvalidDisplayID) {
1081 size_t primary_index, secondary_index;
1082 if (displays->at(0).id() == layout.primary_id) {
1083 primary_index = 0;
1084 secondary_index = 1;
1085 } else {
1086 primary_index = 1;
1087 secondary_index = 0;
1088 }
1089 // This function may be called before the secondary display is
1090 // registered. The bounds is empty in that case and will
1091 // return true.
1092 gfx::Rect bounds =
1093 GetDisplayForId(displays->at(secondary_index).id()).bounds();
1094 UpdateDisplayBoundsForLayout(
1095 layout, displays->at(primary_index), &displays->at(secondary_index));
1096 *updated_index = secondary_index;
1097 return bounds != displays->at(secondary_index).bounds();
1098 }
1099 return false;
1100 }
1101
1102 // static
UpdateDisplayBoundsForLayout(const DisplayLayout & layout,const gfx::Display & primary_display,gfx::Display * secondary_display)1103 void DisplayManager::UpdateDisplayBoundsForLayout(
1104 const DisplayLayout& layout,
1105 const gfx::Display& primary_display,
1106 gfx::Display* secondary_display) {
1107 DCHECK_EQ("0,0", primary_display.bounds().origin().ToString());
1108
1109 const gfx::Rect& primary_bounds = primary_display.bounds();
1110 const gfx::Rect& secondary_bounds = secondary_display->bounds();
1111 gfx::Point new_secondary_origin = primary_bounds.origin();
1112
1113 DisplayLayout::Position position = layout.position;
1114
1115 // Ignore the offset in case the secondary display doesn't share edges with
1116 // the primary display.
1117 int offset = layout.offset;
1118 if (position == DisplayLayout::TOP || position == DisplayLayout::BOTTOM) {
1119 offset = std::min(
1120 offset, primary_bounds.width() - kMinimumOverlapForInvalidOffset);
1121 offset = std::max(
1122 offset, -secondary_bounds.width() + kMinimumOverlapForInvalidOffset);
1123 } else {
1124 offset = std::min(
1125 offset, primary_bounds.height() - kMinimumOverlapForInvalidOffset);
1126 offset = std::max(
1127 offset, -secondary_bounds.height() + kMinimumOverlapForInvalidOffset);
1128 }
1129 switch (position) {
1130 case DisplayLayout::TOP:
1131 new_secondary_origin.Offset(offset, -secondary_bounds.height());
1132 break;
1133 case DisplayLayout::RIGHT:
1134 new_secondary_origin.Offset(primary_bounds.width(), offset);
1135 break;
1136 case DisplayLayout::BOTTOM:
1137 new_secondary_origin.Offset(offset, primary_bounds.height());
1138 break;
1139 case DisplayLayout::LEFT:
1140 new_secondary_origin.Offset(-secondary_bounds.width(), offset);
1141 break;
1142 }
1143 gfx::Insets insets = secondary_display->GetWorkAreaInsets();
1144 secondary_display->set_bounds(
1145 gfx::Rect(new_secondary_origin, secondary_bounds.size()));
1146 secondary_display->UpdateWorkAreaFromInsets(insets);
1147 }
1148
1149 } // namespace ash
1150