// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/display/manager/display_manager.h"
#include <cmath>
#include <limits>
#include <map>
#include <optional>
#include <set>
#include <string>
#include <utility>
#include <vector>
#include "base/auto_reset.h"
#include "base/command_line.h"
#include "base/containers/contains.h"
#include "base/debug/dump_without_crashing.h"
#include "base/debug/stack_trace.h"
#include "base/functional/bind.h"
#include "base/logging.h"
#include "base/metrics/histogram_macros.h"
#include "base/no_destructor.h"
#include "base/notreached.h"
#include "base/ranges/algorithm.h"
#include "base/run_loop.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_split.h"
#include "base/strings/stringprintf.h"
#include "base/strings/utf_string_conversions.h"
#include "base/system/sys_info.h"
#include "base/task/single_thread_task_runner.h"
#include "base/time/time.h"
#include "build/build_config.h"
#include "build/chromeos_buildflags.h"
#include "chromeos/ui/base/display_util.h"
#include "components/device_event_log/device_event_log.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/display/display.h"
#include "ui/display/display_features.h"
#include "ui/display/display_finder.h"
#include "ui/display/display_observer.h"
#include "ui/display/display_switches.h"
#include "ui/display/manager/display_change_observer.h"
#include "ui/display/manager/display_configurator.h"
#include "ui/display/manager/display_layout_store.h"
#include "ui/display/manager/display_manager_observer.h"
#include "ui/display/manager/managed_display_info.h"
#include "ui/display/manager/util/display_manager_util.h"
#include "ui/display/screen.h"
#include "ui/display/tablet_state.h"
#include "ui/display/types/display_constants.h"
#include "ui/display/types/display_snapshot.h"
#include "ui/display/types/native_display_delegate.h"
#include "ui/display/util/display_util.h"
#include "ui/events/devices/touchscreen_device.h"
#include "ui/gfx/color_space.h"
#include "ui/gfx/font_render_params.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/geometry/size_conversions.h"
#include "ui/strings/grit/ui_strings.h"
namespace display {
namespace {
// The number of pixels to overlap between the primary and secondary displays,
// in case that the offset value is too large.
const int kMinimumOverlapForInvalidOffset = 100;
// The UMA histogram that logs the types of mirror mode.
const char kMirrorModeTypesHistogram[] = "DisplayManager.MirrorModeTypes";
// The UMA histogram that logs whether mirroring is done in hardware or
// software.
const char kMirroringImplementationHistogram[] =
"DisplayManager.MirroringImplementation";
// The UMA histogram that logs the zoom percentage level of the internal
// display.
constexpr char kInternalDisplayZoomPercentageHistogram[] =
"DisplayManager.InternalDisplayZoomPercentage";
// Timeout in seconds after which we consider the change to the display zoom
// is not temporary.
constexpr int kDisplayZoomModifyTimeoutSec = 15;
struct DisplaySortFunctor {
bool operator()(const Display& a, const Display& b) {
return CompareDisplayIds(a.id(), b.id());
}
};
struct DisplayInfoSortFunctor {
bool operator()(const ManagedDisplayInfo& a, const ManagedDisplayInfo& b) {
return CompareDisplayIds(a.id(), b.id());
}
};
Display& GetInvalidDisplay() {
static Display* invalid_display = new Display();
return *invalid_display;
}
ManagedDisplayInfo::ManagedDisplayModeList::const_iterator FindDisplayMode(
const ManagedDisplayInfo& info,
const ManagedDisplayMode& target_mode) {
const ManagedDisplayInfo::ManagedDisplayModeList& modes =
info.display_modes();
return base::ranges::find_if(modes,
[target_mode](const ManagedDisplayMode& mode) {
return target_mode.IsEquivalent(mode);
});
}
void SetInternalManagedDisplayModeList(ManagedDisplayInfo* info) {
ManagedDisplayMode native_mode(info->bounds_in_native().size(),
0.0 /* refresh_rate */, false /* interlaced */,
true /* native_mode */,
info->device_scale_factor());
info->SetManagedDisplayModes(
CreateInternalManagedDisplayModeList(native_mode));
}
void MaybeInitInternalDisplay(ManagedDisplayInfo* info) {
int64_t id = info->id();
if (ForceFirstDisplayInternal()) {
display::SetInternalDisplayIds({id});
SetInternalManagedDisplayModeList(info);
}
}
gfx::Size GetMaxNativeSize(const ManagedDisplayInfo& info) {
gfx::Size size;
for (auto& mode : info.display_modes()) {
if (mode.size().GetArea() > size.GetArea()) {
size = mode.size();
}
}
return size;
}
bool ContainsDisplayWithId(const std::vector<Display>& displays,
int64_t display_id) {
for (auto& display : displays) {
if (display.id() == display_id) {
return true;
}
}
return false;
}
// Gets the next mode in |modes| in the direction marked by |up|. If trying to
// move past either end of |modes|, returns the same.
const ManagedDisplayMode* FindNextMode(
const ManagedDisplayInfo::ManagedDisplayModeList& modes,
size_t index,
bool up) {
DCHECK_LT(index, modes.size());
size_t new_index = index;
if (up && (index + 1 < modes.size())) {
++new_index;
} else if (!up && index != 0) {
--new_index;
}
return &modes[new_index];
}
// Gets the display |mode| for the next valid resolution. Returns false if the
// display is an internal display or if the DIP size cannot be found in |info|.
bool GetDisplayModeForNextResolution(const ManagedDisplayInfo& info,
bool up,
ManagedDisplayMode* mode) {
DCHECK(!IsInternalDisplayId(info.id()));
const ManagedDisplayInfo::ManagedDisplayModeList& modes =
info.display_modes();
ManagedDisplayMode tmp(info.size_in_pixel(), 0.0, false, false,
info.device_scale_factor());
const gfx::Size resolution = tmp.GetSizeInDIP();
auto iter =
base::ranges::find(modes, resolution, &ManagedDisplayMode::GetSizeInDIP);
if (iter == modes.end()) {
return false;
}
*mode = *FindNextMode(modes, iter - modes.begin(), up);
return true;
}
// Returns a pointer to the ManagedDisplayInfo of the display with |id|, nullptr
// if the corresponding info was not found.
const ManagedDisplayInfo* FindInfoById(const DisplayInfoList& display_info_list,
int64_t id) {
const auto iter =
base::ranges::find(display_info_list, id, &ManagedDisplayInfo::id);
if (iter == display_info_list.end()) {
return nullptr;
}
return &(*iter);
}
// Validates that:
// - All display IDs in the |matrix| are included in the |display_info_list|,
// - All IDs in |display_info_list| exist in the |matrix|,
// - All IDs in the matrix are unique (no repeated IDs).
bool ValidateMatrixForDisplayInfoList(
const DisplayInfoList& display_info_list,
const UnifiedDesktopLayoutMatrix& matrix) {
std::set<int64_t> matrix_ids;
for (const auto& row : matrix) {
for (const auto& id : row) {
if (!matrix_ids.emplace(id).second) {
LOG(ERROR) << "Matrix has a repeated ID: " << id;
return false;
}
if (!FindInfoById(display_info_list, id)) {
LOG(ERROR) << "Matrix has ID: " << id << " with no corresponding info "
<< "in the display info list.";
return false;
}
}
}
for (const auto& info : display_info_list) {
if (!matrix_ids.count(info.id())) {
LOG(ERROR) << "Display info with ID: " << info.id() << " doesn't exist "
<< "in the layout matrix.";
return false;
}
}
return true;
}
// Defines the ranges in which the number of displays can reside as reported by
// UMA in the case of Unified Desktop mode or mirror mode.
//
// WARNING: These values are persisted to logs. Entries should not be
// renumbered and numeric values should never be reused.
enum class DisplayCountRange {
// Exactly 2 displays.
k2Displays = 0,
// Range (2 : 4] displays.
kUpTo4Displays = 1,
// Range (4 : 6] displays.
kUpTo6Displays = 2,
// Range (6 : 8] displays.
kUpTo8Displays = 3,
// Greater than 8 displays.
kGreaterThan8Displays = 4,
// Always keep this the last item.
kCount,
};
// Returns the display count range bucket in which |display_count| resides.
DisplayCountRange GetDisplayCountRange(int display_count) {
// Note that Unified Mode and mirror mode cannot be enabled with a single
// display.
DCHECK_GE(display_count, 2);
if (display_count <= 2) {
return DisplayCountRange::k2Displays;
}
if (display_count <= 4) {
return DisplayCountRange::kUpTo4Displays;
}
if (display_count <= 6) {
return DisplayCountRange::kUpTo6Displays;
}
if (display_count <= 8) {
return DisplayCountRange::kUpTo8Displays;
}
return DisplayCountRange::kGreaterThan8Displays;
}
// Describes the way mirror mode is implemented as reported by UMA.
//
// WARNING: These values are persisted to logs. Entries should not be renumbered
// and numeric values should never be reused.
enum class MirroringImplementation {
// Software mirroring, where the same content is rendered for each display
// independently.
kSoftware = 0,
// Hardware mirroring, where a display is rendered once and shared across
// multiple displays.
kHardware = 1,
kMaxValue = kHardware,
};
// Defines the types of mirror mode in which the displays connected to the
// device are in as reported by UMA.
//
// WARNING: These values are persisted to logs. Entries should not be renumbered
// and numeric values should never be reused.
enum class MirrorModeTypes {
// Normal mirror mode.
kNormal = 0,
// Mixed mirror mode.
kMixed = 1,
// Always keep this the last item.
kCount,
};
void OnInternalDisplayZoomChanged(float zoom_factor) {
constexpr static int kMaxValue = 300;
constexpr static int kBucketSize = 5;
constexpr static int kNumBuckets = kMaxValue / kBucketSize + 1;
base::LinearHistogram::FactoryGet(
kInternalDisplayZoomPercentageHistogram, kBucketSize, kMaxValue,
kNumBuckets, base::HistogramBase::kUmaTargetedHistogramFlag)
->Add(std::round(zoom_factor * 100));
}
// Returns true if two ids has the same output index.
bool HasSameOutputIndex(int64_t id1, int64_t id2) {
return (id1 & 0xFF) == (id2 & 0xFF);
}
std::string ToString(DisplayManager::MultiDisplayMode mode) {
switch (mode) {
case DisplayManager::MultiDisplayMode::EXTENDED:
return "extended";
case DisplayManager::MultiDisplayMode::MIRRORING:
return "mirroring";
case DisplayManager::MultiDisplayMode::UNIFIED:
return "unified";
}
NOTREACHED();
}
// Uses a piecewise linear function to map a brightness percent to sdr luminance
// value such that [0%, 80%] maps to [5 nits, 203 nits] and
// [80%, 100%] maps to [203 nits, `hdr_max_lum`].
float GetSdrLumForScreenBrightness(float percent, float hdr_max_lum) {
DCHECK_LE(percent, 100.f);
DCHECK_GE(percent, 0.f);
float brightness_pivot = 80.f;
float sdr_avg = gfx::ColorSpace::kDefaultSDRWhiteLevel;
float sdr_min = 5.f;
float sdr_lum;
if (percent < brightness_pivot) {
sdr_lum = ((percent / brightness_pivot) * (sdr_avg - sdr_min)) + sdr_min;
} else {
sdr_lum = ((percent - 100.f) * (hdr_max_lum - sdr_avg)) /
(100.f - brightness_pivot);
sdr_lum += hdr_max_lum;
}
DCHECK_LE(sdr_lum, hdr_max_lum);
DCHECK_GT(sdr_lum, sdr_min);
return sdr_lum;
}
gfx::DisplayColorSpaces UpdateMaxLuminanceValue(
const gfx::DisplayColorSpaces display_color_spaces,
float brightness) {
// On lid close or error state, do not alter the brightness settings of the
// external display.
if (brightness <= 0.f || brightness > 100.f) {
return display_color_spaces;
}
// Only change the HDR headroom if the output space is affected by the SDR
// brightness level.
auto hdr_space = display_color_spaces.GetOutputColorSpace(
gfx::ContentColorUsage::kHDR, false);
if (!hdr_space.IsAffectedBySDRWhiteLevel()) {
return display_color_spaces;
}
float hdr_max = display_color_spaces.GetHDRMaxLuminanceRelative() *
display_color_spaces.GetSDRMaxLuminanceNits();
float sdr_lum = GetSdrLumForScreenBrightness(brightness, hdr_max);
if (display_color_spaces.GetSDRMaxLuminanceNits() == sdr_lum) {
return display_color_spaces;
}
gfx::DisplayColorSpaces updated_display_color_spaces(display_color_spaces);
updated_display_color_spaces.SetHDRMaxLuminanceRelative(hdr_max / sdr_lum);
updated_display_color_spaces.SetSDRMaxLuminanceNits(sdr_lum);
return updated_display_color_spaces;
}
} // namespace
DisplayManager::BeginEndNotifier::BeginEndNotifier(
DisplayManager* display_manager,
bool notify_on_pending_change_only)
: notify_on_pending_change_only_(notify_on_pending_change_only),
display_manager_(display_manager) {
if (display_manager_->notify_depth_++ == 0) {
CHECK(!display_manager_->pending_display_changes_.has_value());
display_manager_->pending_display_changes_.emplace();
if (!notify_on_pending_change_only_) {
display_manager_->NotifyWillProcessDisplayChanges();
}
}
}
DisplayManager::BeginEndNotifier::~BeginEndNotifier() {
if (--display_manager_->notify_depth_ == 0) {
CHECK(display_manager_->pending_display_changes_.has_value());
const bool has_pending_changes =
!display_manager_->pending_display_changes_->IsEmpty();
if (notify_on_pending_change_only_ && has_pending_changes) {
// To comply with API expectations we must emit will process notifications
// before did process notifications.
display_manager_->NotifyWillProcessDisplayChanges();
}
const DisplayManagerObserver::DisplayConfigurationChange config_change =
CreateConfigChange();
display_manager_->pending_display_changes_.reset();
if (!notify_on_pending_change_only_ || has_pending_changes) {
display_manager_->NotifyDidProcessDisplayChanges(config_change);
}
}
}
DisplayManagerObserver::DisplayConfigurationChange
DisplayManager::BeginEndNotifier::CreateConfigChange() const {
CHECK(display_manager_->pending_display_changes_.has_value());
PendingDisplayChanges& pending_changes =
display_manager_->pending_display_changes_.value();
Displays added_displays;
for (int64_t display_id : pending_changes.added_display_ids) {
CHECK(display_manager_->IsDisplayIdValid(display_id));
added_displays.emplace_back(display_manager_->GetDisplayForId(display_id));
}
std::vector<DisplayManagerObserver::DisplayMetricsChange>
display_metrics_changes;
for (const auto& pair : pending_changes.display_metrics_changes) {
if (display_manager_->IsDisplayIdValid(pair.first)) {
display_metrics_changes.emplace_back(
DisplayManagerObserver::DisplayMetricsChange(
display_manager_->GetDisplayForId(pair.first), pair.second));
}
}
return {std::move(added_displays),
std::move(pending_changes.removed_displays),
std::move(display_metrics_changes)};
}
DisplayManager::PendingDisplayChanges::PendingDisplayChanges() = default;
DisplayManager::PendingDisplayChanges::~PendingDisplayChanges() = default;
bool DisplayManager::PendingDisplayChanges::IsEmpty() const {
return added_display_ids.empty() && removed_displays.empty() &&
display_metrics_changes.empty();
}
DisplayManager::DisplayManager(std::unique_ptr<Screen> screen)
: screen_(std::move(screen)), layout_store_(new DisplayLayoutStore) {
SetConfigureDisplays(base::SysInfo::IsRunningOnChromeOS());
change_display_upon_host_resize_ = !configure_displays_;
unified_desktop_enabled_ = base::CommandLine::ForCurrentProcess()->HasSwitch(
::switches::kEnableUnifiedDesktop);
touch_device_manager_ = std::make_unique<TouchDeviceManager>();
}
DisplayManager::~DisplayManager() {
// Reset the font params.
gfx::SetFontRenderParamsDeviceScaleFactor(1.0f);
on_display_zoom_modify_timeout_.Cancel();
}
void DisplayManager::SetConfigureDisplays(bool configure_displays) {
configure_displays_ = configure_displays;
if (display_configurator_) {
display_configurator_->SetConfigureDisplays(configure_displays);
}
}
bool DisplayManager::InitFromCommandLine() {
DisplayInfoList info_list;
base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
if (!command_line->HasSwitch(::switches::kHostWindowBounds)) {
return false;
}
const std::string size_str =
command_line->GetSwitchValueASCII(::switches::kHostWindowBounds);
for (const std::string& part : base::SplitString(
size_str, ",", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL)) {
info_list.push_back(ManagedDisplayInfo::CreateFromSpec(part));
info_list.back().set_native(true);
info_list.back().set_from_native_platform(true);
}
MaybeInitInternalDisplay(&info_list[0]);
OnNativeDisplaysChanged(info_list);
return true;
}
void DisplayManager::InitDefaultDisplay() {
DisplayInfoList info_list;
info_list.push_back(ManagedDisplayInfo::CreateFromSpec(std::string()));
info_list.back().set_native(true);
MaybeInitInternalDisplay(&info_list[0]);
OnNativeDisplaysChanged(info_list);
}
void DisplayManager::UpdateInternalDisplay(
const ManagedDisplayInfo& display_info) {
DCHECK(HasInternalDisplay());
InsertAndUpdateDisplayInfo(display_info);
}
void DisplayManager::RefreshFontParams() {
gfx::SetFontRenderParamsDeviceScaleFactor(
chromeos::GetRepresentativeDeviceScaleFactor(active_display_list_));
}
const DisplayLayout& DisplayManager::GetCurrentDisplayLayout() const {
DCHECK_LE(2U, num_connected_displays());
if (num_connected_displays() > 1) {
DisplayIdList list = GetConnectedDisplayIdList();
return layout_store_->GetRegisteredDisplayLayout(list);
}
DLOG(ERROR) << "DisplayLayout is requested for single display";
// On release build, just fallback to default instead of blowing up.
static base::NoDestructor<DisplayLayout> layout;
layout->primary_id = active_display_list_[0].id();
return *layout;
}
const DisplayLayout& DisplayManager::GetCurrentResolvedDisplayLayout() const {
return current_resolved_layout_ ? *current_resolved_layout_
: GetCurrentDisplayLayout();
}
DisplayIdList DisplayManager::GetConnectedDisplayIdList() const {
return connected_display_id_list_;
}
bool DisplayManager::IsConnectedDisplayIdListInSyncWithCurrentState(
const DisplayIdList& display_id_list) const {
#if DCHECK_IS_ON()
DisplayIdList connected_display_id_list = display_id_list;
if (IsInUnifiedMode()) {
// A display for unified desktop is virtual.
DCHECK_EQ(1u, display_id_list.size());
DCHECK_EQ(display_id_list[0], kUnifiedDisplayId);
connected_display_id_list.clear();
}
DisplayIdList software_mirroring_display_id_list =
CreateDisplayIdList(software_mirroring_display_list_);
connected_display_id_list.insert(connected_display_id_list.end(),
software_mirroring_display_id_list.begin(),
software_mirroring_display_id_list.end());
connected_display_id_list.insert(connected_display_id_list.end(),
hardware_mirroring_display_id_list_.begin(),
hardware_mirroring_display_id_list_.end());
SortDisplayIdList(&connected_display_id_list);
return connected_display_id_list_ == connected_display_id_list;
#else
return true;
#endif
}
void DisplayManager::SetLayoutForCurrentDisplays(
std::unique_ptr<DisplayLayout> layout) {
if (GetNumDisplays() == 1) {
return;
}
// TODO(tluk): Move instantiating this to after checking whether the current
// layout has the same placement list.
BeginEndNotifier notifier(this);
const DisplayIdList list = GetConnectedDisplayIdList();
DCHECK(DisplayLayout::Validate(list, *layout));
const DisplayLayout& current_layout =
layout_store_->GetRegisteredDisplayLayout(list);
if (layout->HasSamePlacementList(current_layout)) {
return;
}
layout_store_->RegisterLayoutForDisplayIdList(list, std::move(layout));
if (delegate_) {
NotifyWillApplyDisplayChanges(false);
}
// TODO(oshima): Call UpdateDisplays instead.
std::vector<int64_t> updated_ids;
current_resolved_layout_ = GetCurrentDisplayLayout().Copy();
ApplyDisplayLayout(current_resolved_layout_.get(), &active_display_list_,
&updated_ids);
for (int64_t id : updated_ids) {
NotifyMetricsChanged(GetDisplayForId(id),
DisplayObserver::DISPLAY_METRIC_BOUNDS |
DisplayObserver::DISPLAY_METRIC_WORK_AREA);
CHECK(pending_display_changes_.has_value());
pending_display_changes_->display_metrics_changes[id] |=
DisplayObserver::DISPLAY_METRIC_BOUNDS |
DisplayObserver::DISPLAY_METRIC_WORK_AREA;
}
if (delegate_) {
NotifyDidApplyDisplayChanges();
}
}
const Display& DisplayManager::GetDisplayForId(int64_t display_id) const {
auto* display =
const_cast<DisplayManager*>(this)->FindDisplayForId(display_id);
// TODO(oshima): This happens when windows in unified desktop have
// been moved to a normal window. Fix this.
if (!display && display_id != kUnifiedDisplayId) {
DLOG(ERROR) << "Could not find display:" << display_id;
}
return display ? *display : GetInvalidDisplay();
}
bool DisplayManager::IsDisplayIdValid(int64_t display_id) const {
Display* display =
const_cast<DisplayManager*>(this)->FindDisplayForId(display_id);
return !!display;
}
const Display& DisplayManager::FindDisplayContainingPoint(
const gfx::Point& point_in_screen) const {
const Displays& active_only_displays = active_only_display_list();
auto iter = display::FindDisplayContainingPoint(active_only_displays,
point_in_screen);
return iter == active_only_displays.end() ? GetInvalidDisplay() : *iter;
}
bool DisplayManager::UpdateWorkAreaOfDisplay(int64_t display_id,
const gfx::Insets& insets) {
BeginEndNotifier notifier(this);
Display* display = FindDisplayForId(display_id);
DCHECK(display);
gfx::Rect old_work_area = display->work_area();
display->UpdateWorkAreaFromInsets(insets);
bool workarea_changed = old_work_area != display->work_area();
bool in_display_creation = in_creating_display_.has_value() &&
in_creating_display_.value() == display_id;
// Do not notify observer if this is called during display creation, because
// `OnDisplayAdded` is not yet called.
if (workarea_changed && !in_display_creation) {
NotifyMetricsChanged(*display, DisplayObserver::DISPLAY_METRIC_WORK_AREA);
CHECK(pending_display_changes_.has_value());
pending_display_changes_->display_metrics_changes[display_id] |=
DisplayObserver::DISPLAY_METRIC_WORK_AREA;
}
return workarea_changed;
}
void DisplayManager::SetOverscanInsets(int64_t display_id,
const gfx::Insets& insets_in_dip) {
bool update = false;
DisplayInfoList display_info_list;
for (const auto& display : active_display_list_) {
ManagedDisplayInfo info = GetDisplayInfo(display.id());
if (info.id() == display_id) {
if (insets_in_dip.IsEmpty()) {
info.set_clear_overscan_insets(true);
} else {
info.set_clear_overscan_insets(false);
info.SetOverscanInsets(insets_in_dip);
}
update = true;
}
display_info_list.push_back(info);
}
if (update) {
AddMirrorDisplayInfoIfAny(&display_info_list);
UpdateDisplaysWith(display_info_list);
} else {
display_info_[display_id].SetOverscanInsets(insets_in_dip);
}
}
void DisplayManager::SetDisplayRotation(int64_t display_id,
Display::Rotation rotation,
Display::RotationSource source) {
if (IsInUnifiedMode() && display_id == kUnifiedDisplayId) {
return;
}
DisplayInfoList display_info_list;
bool is_active = false;
for (const auto& display : active_display_list_) {
ManagedDisplayInfo info = GetDisplayInfo(display.id());
if (info.id() == display_id) {
if (info.GetRotation(source) == rotation &&
info.GetActiveRotation() == rotation) {
return;
}
info.SetRotation(rotation, source);
is_active = true;
}
display_info_list.push_back(info);
}
if (is_active) {
AddMirrorDisplayInfoIfAny(&display_info_list);
UpdateDisplaysWith(display_info_list);
} else if (display_info_.find(display_id) != display_info_.end()) {
// Inactive displays can reactivate, ensure they have been updated.
display_info_[display_id].SetRotation(rotation, source);
}
}
void DisplayManager::OnScreenBrightnessChanged(float brightness) {
DisplayInfoList display_info_list;
bool display_property_changed = false;
for (const auto& display : active_display_list_) {
ManagedDisplayInfo info = GetDisplayInfo(display.id());
auto updated_display_color_spaces =
UpdateMaxLuminanceValue(info.display_color_spaces(), brightness);
if (updated_display_color_spaces != info.display_color_spaces()) {
display_property_changed = true;
}
info.set_display_color_spaces(updated_display_color_spaces);
display_info_list.emplace_back(info);
}
if (display_property_changed)
UpdateDisplaysWith(display_info_list);
}
bool DisplayManager::SetDisplayMode(int64_t display_id,
const ManagedDisplayMode& display_mode) {
DisplayInfoList display_info_list;
bool display_property_changed = false;
bool resolution_changed = false;
for (const auto& display : active_display_list_) {
ManagedDisplayInfo info = GetDisplayInfo(display.id());
if (info.id() == display_id) {
auto iter = FindDisplayMode(info, display_mode);
if (iter == info.display_modes().end()) {
DLOG(WARNING) << "Unsupported display mode was requested:"
<< "size=" << display_mode.size().ToString()
<< ", scale factor="
<< display_mode.device_scale_factor();
return false;
}
display_modes_[display_id] = *iter;
if (info.bounds_in_native().size() != display_mode.size()) {
// If resolution changes, then we can break right here. No need to
// continue to fill |display_info_list|, since we won't be
// synchronously updating the displays here.
resolution_changed = true;
// Retrieve the zoom factor corresponding to the display mode.
float zoom_factor = 1.f;
const DisplaySizeToZoomFactorMap& zoom_factor_map =
info.zoom_factor_map();
auto it = zoom_factor_map.find(display_mode.size().ToString());
if (it != zoom_factor_map.end()) {
zoom_factor = it->second;
}
// Need to access the original info because the one obtained at the
// beginning of the loop is a copy.
display_info_[display_id].set_zoom_factor(zoom_factor);
break;
}
if (info.device_scale_factor() != display_mode.device_scale_factor()) {
info.set_device_scale_factor(display_mode.device_scale_factor());
display_property_changed = true;
}
if (features::IsListAllDisplayModesEnabled()) {
if (info.refresh_rate() != display_mode.refresh_rate()) {
info.set_refresh_rate(display_mode.refresh_rate());
resolution_changed = true;
}
if (info.is_interlaced() != display_mode.is_interlaced()) {
info.set_is_interlaced(display_mode.is_interlaced());
resolution_changed = true;
}
}
}
display_info_list.emplace_back(info);
}
if (display_property_changed && !resolution_changed) {
// We shouldn't synchronously update the displays here if the resolution
// changed. This should happen asynchronously when configuration is
// triggered.
AddMirrorDisplayInfoIfAny(&display_info_list);
UpdateDisplaysWith(display_info_list);
}
if (resolution_changed && IsInUnifiedMode()) {
ReconfigureDisplays();
} else if (resolution_changed && configure_displays_) {
display_configurator_->OnConfigurationChanged();
}
return resolution_changed || display_property_changed;
}
void DisplayManager::RegisterDisplayProperty(
int64_t display_id,
Display::Rotation rotation,
const gfx::Insets* overscan_insets,
const gfx::Size& resolution_in_pixels,
float device_scale_factor,
float display_zoom_factor,
const DisplaySizeToZoomFactorMap& display_zoom_factor_map,
float refresh_rate,
bool is_interlaced,
VariableRefreshRateState variable_refresh_rate_state,
const std::optional<float>& vsync_rate_min) {
if (display_info_.find(display_id) == display_info_.end()) {
display_info_[display_id] =
ManagedDisplayInfo(display_id, std::string(), false);
}
// Do not allow rotation in unified desktop mode.
if (display_id == kUnifiedDisplayId) {
rotation = Display::ROTATE_0;
}
ManagedDisplayInfo& info = display_info_[display_id];
info.SetRotation(rotation, Display::RotationSource::USER);
info.SetRotation(rotation, Display::RotationSource::ACTIVE);
info.set_zoom_factor(display_zoom_factor);
for (const auto& it : display_zoom_factor_map) {
info.AddZoomFactorForSize(it.first, it.second);
}
if (overscan_insets) {
info.SetOverscanInsets(*overscan_insets);
}
info.set_refresh_rate(refresh_rate);
info.set_is_interlaced(is_interlaced);
info.set_variable_refresh_rate_state(variable_refresh_rate_state);
info.set_vsync_rate_min(vsync_rate_min);
if (!resolution_in_pixels.IsEmpty()) {
DCHECK(!IsInternalDisplayId(display_id));
ManagedDisplayMode mode(resolution_in_pixels, refresh_rate, is_interlaced,
false, device_scale_factor);
display_modes_[display_id] = mode;
}
}
bool DisplayManager::GetActiveModeForDisplayId(int64_t display_id,
ManagedDisplayMode* mode) const {
ManagedDisplayMode selected_mode;
if (GetSelectedModeForDisplayId(display_id, &selected_mode)) {
*mode = selected_mode;
return true;
}
// If 'selected' mode is empty, it should return the default mode. This means
// the native mode for the external display, and the first one for internal.
// For external display, check display info for current active mode first to
// handle the fallback situation when native mode is not supported.
const ManagedDisplayInfo& info = GetDisplayInfo(display_id);
const ManagedDisplayInfo::ManagedDisplayModeList& display_modes =
info.display_modes();
const ManagedDisplayMode current_mode(
info.bounds_in_native().size(), info.refresh_rate(), info.is_interlaced(),
info.native(), info.device_scale_factor());
std::optional<ManagedDisplayMode> external_native_mode;
for (const auto& display_mode : display_modes) {
if (display::IsInternalDisplayId(display_id)) {
if (display_modes.size() == 1 || display_mode.native()) {
*mode = display_mode;
return true;
}
} else if (display_mode.IsEquivalent(current_mode)) {
*mode = display_mode;
return true;
} else if (display_mode.native()) {
external_native_mode = std::make_optional(display_mode);
}
}
if (external_native_mode.has_value()) {
*mode = external_native_mode.value();
return true;
}
return false;
}
void DisplayManager::RegisterDisplayRotationProperties(
bool rotation_lock,
Display::Rotation rotation) {
if (delegate_) {
NotifyWillApplyDisplayChanges(false);
}
registered_internal_display_rotation_lock_ = rotation_lock;
registered_internal_display_rotation_ = rotation;
if (delegate_) {
NotifyDidApplyDisplayChanges();
}
}
bool DisplayManager::GetSelectedModeForDisplayId(
int64_t display_id,
ManagedDisplayMode* mode) const {
auto iter = display_modes_.find(display_id);
if (iter == display_modes_.end()) {
return false;
}
*mode = iter->second;
return true;
}
void DisplayManager::SetSelectedModeForDisplayId(
int64_t display_id,
const ManagedDisplayMode& display_mode) {
ManagedDisplayInfo info = GetDisplayInfo(display_id);
auto iter = FindDisplayMode(info, display_mode);
if (iter == info.display_modes().end()) {
DLOG(WARNING) << "Unsupported display mode was requested:"
<< "size=" << display_mode.size().ToString()
<< ", scale factor=" << display_mode.device_scale_factor();
}
display_modes_[display_id] = *iter;
}
gfx::Insets DisplayManager::GetOverscanInsets(int64_t display_id) const {
auto it = display_info_.find(display_id);
return (it != display_info_.end()) ? it->second.overscan_insets_in_dip()
: gfx::Insets();
}
void DisplayManager::OnNativeDisplaysChanged(
const DisplayInfoList& updated_displays) {
DISPLAY_LOG(EVENT) << "Native displays updated"
<< ". Unified desktop allowed: "
<< unified_desktop_enabled_ << ", Multi display mode: "
<< ToString(multi_display_mode_)
<< ", count:" << updated_displays.size()
<< " currently active:" << active_display_list_.size();
for (const auto& display : updated_displays) {
DISPLAY_LOG(EVENT) << display.ToString();
}
if (updated_displays.empty()) {
// If the device is booted without display, or chrome is started
// without --ash-host-window-bounds on linux desktop, use the
// default display.
if (active_display_list_.empty()) {
DisplayInfoList init_displays;
init_displays.push_back(
ManagedDisplayInfo::CreateFromSpec(std::string()));
init_displays[0].set_detected(false);
MaybeInitInternalDisplay(&init_displays[0]);
OnNativeDisplaysChanged(init_displays);
} else {
// Otherwise just update the displays' detected state when all displays
// are disconnected.
// This happens when:
// - the device is idle and powerd requested to turn off all displays.
// - the device is suspended. (kernel turns off all displays)
// - the internal display's brightness is set to 0 and no external
// display is connected.
// - the internal display's brightness is 0 and external display is
// disconnected.
// The display will be updated when one of displays is turned on, and the
// display list will be updated correctly.
BeginEndNotifier notifier(this);
for (auto& display : active_display_list_) {
if (display.detected()) {
ManagedDisplayInfo info = GetDisplayInfo(display.id());
info.set_detected(false);
display.set_detected(false);
InsertAndUpdateDisplayInfo(info);
NotifyMetricsChanged(display,
DisplayObserver::DISPLAY_METRIC_DETECTED);
CHECK(pending_display_changes_.has_value());
pending_display_changes_->display_metrics_changes[display.id()] |=
DisplayObserver::DISPLAY_METRIC_DETECTED;
}
}
}
return;
}
first_display_id_ = updated_displays[0].id();
std::map<gfx::Point, int64_t> origins;
bool internal_display_connected = false;
DisplayIdList hardware_mirroring_display_id_list;
int64_t mirroring_source_id = kInvalidDisplayId;
DisplayInfoList new_display_info_list;
for (const auto& display_info : updated_displays) {
if (!internal_display_connected) {
internal_display_connected = IsInternalDisplayId(display_info.id());
}
// Mirrored monitors have the same origins.
gfx::Point origin = display_info.bounds_in_native().origin();
const auto iter = origins.find(origin);
if (iter != origins.end()) {
InsertAndUpdateDisplayInfo(display_info);
if (hardware_mirroring_display_id_list.empty()) {
// Unlike software mirroring, hardware mirroring has no source and
// target. All mirroring displays scan the same frame buffer. But for
// convenience, we treat the first mirroring display as source.
mirroring_source_id = iter->second;
}
// Only keep the first hardware mirroring display in
// |new_display_info_list| because hardware mirroring is not visible for
// display manager and all hardware mirroring displays should be treated
// as one single display from this point.
hardware_mirroring_display_id_list.emplace_back(display_info.id());
} else {
origins.emplace(origin, display_info.id());
new_display_info_list.emplace_back(display_info);
}
ManagedDisplayMode new_mode(
display_info.bounds_in_native().size(), display_info.refresh_rate(),
display_info.is_interlaced(), display_info.native(),
display_info.device_scale_factor());
const ManagedDisplayInfo::ManagedDisplayModeList& display_modes =
display_info.display_modes();
// This is empty the displays are initialized from InitFromCommandLine.
if (display_modes.empty()) {
continue;
}
auto display_modes_iter = FindDisplayMode(display_info, new_mode);
// Update the actual resolution selected as the resolution request may fail.
if (display_modes_iter == display_modes.end()) {
display_modes_.erase(display_info.id());
} else if (display_modes_.find(display_info.id()) != display_modes_.end()) {
display_modes_[display_info.id()] = *display_modes_iter;
}
}
if (HasInternalDisplay() && !internal_display_connected) {
if (display_info_.find(Display::InternalDisplayId()) ==
display_info_.end()) {
// Create a dummy internal display if the chrome restarted
// in docked mode.
ManagedDisplayInfo internal_display_info(
Display::InternalDisplayId(),
l10n_util::GetStringUTF8(IDS_DISPLAY_NAME_INTERNAL),
false /*Internal display must not have overscan */);
internal_display_info.SetBounds(gfx::Rect(0, 0, 800, 600));
display_info_[Display::InternalDisplayId()] = internal_display_info;
} else {
// Internal display is no longer active. Reset its rotation to user
// preference, so that it is restored when the internal display becomes
// active again.
Display::Rotation user_rotation =
display_info_[Display::InternalDisplayId()].GetRotation(
Display::RotationSource::USER);
display_info_[Display::InternalDisplayId()].SetRotation(
user_rotation, Display::RotationSource::USER);
}
}
if (!configure_displays_ && new_display_info_list.size() > 1 &&
hardware_mirroring_display_id_list.empty()) {
DisplayIdList list = CreateDisplayIdList(new_display_info_list);
// Mirror mode is set by DisplayConfigurator on the device. Emulate it when
// running on linux desktop. Carry over HW mirroring state only in unified
// desktop so that it can switch to software mirroring to avoid exiting
// unified desktop.
// Note that this is only for testing.
bool should_enable_software_mirroring =
base::CommandLine::ForCurrentProcess()->HasSwitch(
::switches::kEnableSoftwareMirroring) ||
ShouldSetMirrorModeOn(list, unified_desktop_enabled_);
SetSoftwareMirroring(should_enable_software_mirroring);
}
// Do not clear current mirror state before calling ShouldSetMirrorModeOn()
// as it depends on the state.
ClearMirroringSourceAndDestination();
hardware_mirroring_display_id_list_ = hardware_mirroring_display_id_list;
mirroring_source_id_ = mirroring_source_id;
connected_display_id_list_ = CreateDisplayIdList(updated_displays);
UpdateDisplaysWith(new_display_info_list);
}
void DisplayManager::UpdateDisplays() {
DisplayInfoList display_info_list;
for (const auto& display : active_display_list_) {
display_info_list.push_back(GetDisplayInfo(display.id()));
}
AddMirrorDisplayInfoIfAny(&display_info_list);
UpdateDisplaysWith(display_info_list);
}
void DisplayManager::UpdateDisplaysWith(
const DisplayInfoList& updated_display_info_list) {
// Catch and report any nested display updates for crbug.com/330166338.
if (is_updating_displays_) {
base::debug::DumpWithoutCrashing();
}
base::AutoReset<bool> is_updating_displays_resetter(&is_updating_displays_,
true);
BeginEndNotifier notifier(this);
DisplayInfoList new_display_info_list = updated_display_info_list;
std::sort(active_display_list_.begin(), active_display_list_.end(),
DisplaySortFunctor());
std::sort(new_display_info_list.begin(), new_display_info_list.end(),
DisplayInfoSortFunctor());
DisplayIdList new_display_id_list =
CreateDisplayIdList(new_display_info_list);
if (num_connected_displays() > 1) {
DisplayIdList connected_display_id_list = GetConnectedDisplayIdList();
DCHECK(IsConnectedDisplayIdListInSyncWithCurrentState(new_display_id_list));
const DisplayLayout& layout =
layout_store_->GetOrCreateRegisteredDisplayLayout(
connected_display_id_list);
current_default_multi_display_mode_ =
(layout.default_unified && unified_desktop_enabled_) ? UNIFIED
: EXTENDED;
}
if (multi_display_mode_ != MIRRORING ||
(mixed_mirror_mode_params_ &&
ValidateParamsForMixedMirrorMode(new_display_id_list,
*mixed_mirror_mode_params_) !=
MixedMirrorModeParamsErrors::kSuccess)) {
// Set default display mode if mixed mirror mode is requested but the
// request is invalid. (e.g, This may happen when a mirroring source or
// destination display is removed.)
multi_display_mode_ = current_default_multi_display_mode_;
}
UMA_HISTOGRAM_ENUMERATION("DisplayManager.MultiDisplayMode",
multi_display_mode_, MULTI_DISPLAY_MODE_LAST + 1);
CreateSoftwareMirroringDisplayInfo(&new_display_info_list);
// Close the mirroring window if any here to avoid creating two compositor on
// one display.
if (delegate_) {
delegate_->CloseMirroringDisplayIfNotNecessary();
}
Displays new_displays;
Displays removed_displays;
std::map<size_t, uint32_t> display_changes;
std::vector<size_t> added_display_indices;
auto curr_iter = active_display_list_.begin();
DisplayInfoList::const_iterator new_info_iter = new_display_info_list.begin();
while (curr_iter != active_display_list_.end() ||
new_info_iter != new_display_info_list.end()) {
if (curr_iter == active_display_list_.end()) {
// more displays in new list.
added_display_indices.push_back(new_displays.size());
InsertAndUpdateDisplayInfo(*new_info_iter);
new_displays.push_back(
CreateDisplayFromDisplayInfoById(new_info_iter->id()));
++new_info_iter;
} else if (new_info_iter == new_display_info_list.end()) {
// more displays in current list.
removed_displays.push_back(*curr_iter);
++curr_iter;
} else if (curr_iter->id() == new_info_iter->id()) {
const Display& current_display = *curr_iter;
// Copy the info because |InsertAndUpdateDisplayInfo| updates the
// instance.
const ManagedDisplayInfo current_display_info =
GetDisplayInfo(current_display.id());
InsertAndUpdateDisplayInfo(*new_info_iter);
Display new_display =
CreateDisplayFromDisplayInfoById(new_info_iter->id());
const ManagedDisplayInfo& new_display_info =
GetDisplayInfo(new_display.id());
uint32_t metrics = DisplayObserver::DISPLAY_METRIC_NONE;
// At that point the new Display objects we have are not entirely updated,
// they are missing the translation related to the Display disposition in
// the layout.
// Using display.bounds() and display.work_area() would fail most of the
// time.
if (force_bounds_changed_ ||
(current_display_info.bounds_in_native() !=
new_display_info.bounds_in_native()) ||
(current_display_info.GetOverscanInsetsInPixel() !=
new_display_info.GetOverscanInsetsInPixel()) ||
current_display.size() != new_display.size()) {
metrics |= DisplayObserver::DISPLAY_METRIC_BOUNDS |
DisplayObserver::DISPLAY_METRIC_WORK_AREA;
}
if (current_display.device_scale_factor() !=
new_display.device_scale_factor()) {
metrics |= DisplayObserver::DISPLAY_METRIC_DEVICE_SCALE_FACTOR;
}
if (current_display.rotation() != new_display.rotation()) {
metrics |= DisplayObserver::DISPLAY_METRIC_ROTATION;
}
if (!WithinEpsilon(current_display.display_frequency(),
new_display.display_frequency())) {
metrics |= DisplayObserver::DISPLAY_METRIC_REFRESH_RATE;
}
if (current_display_info.is_interlaced() !=
new_display_info.is_interlaced()) {
metrics |= DisplayObserver::DISPLAY_METRIC_INTERLACED;
}
if (current_display.label() != new_display.label()) {
metrics |= DisplayObserver::DISPLAY_METRIC_LABEL;
}
if (current_display_info.variable_refresh_rate_state() !=
new_display_info.variable_refresh_rate_state() ||
current_display_info.vsync_rate_min() !=
new_display_info.vsync_rate_min()) {
metrics |= DisplayObserver::DISPLAY_METRIC_VRR;
}
if (current_display_info.display_color_spaces() !=
new_display_info.display_color_spaces()) {
metrics |= DisplayObserver::DISPLAY_METRIC_COLOR_SPACE;
}
if (current_display_info.detected() != new_display_info.detected()) {
metrics |= DisplayObserver::DISPLAY_METRIC_DETECTED;
}
if (metrics != DisplayObserver::DISPLAY_METRIC_NONE) {
display_changes.insert(
std::pair<size_t, uint32_t>(new_displays.size(), metrics));
}
new_display.UpdateWorkAreaFromInsets(current_display.GetWorkAreaInsets());
new_displays.push_back(new_display);
++curr_iter;
++new_info_iter;
} else if (HasSameOutputIndex(curr_iter->id(), new_info_iter->id()) ||
// Two different ids has the same index, which means the old
// display was disconnected and new display was connected to the
// same port. This can happen when a) a display was swapped while
// the device is on sleep, or b) output connector is dynamic
// (e.g. DP tunneling). Just remove the display now. A new
// display will be added in the next iteration.
CompareDisplayIds(curr_iter->id(), new_info_iter->id())
// more displays in current list between ids, which means it is
// deleted.
) {
removed_displays.push_back(*curr_iter);
++curr_iter;
} else {
// more displays in new list between ids, which means it is added.
added_display_indices.push_back(new_displays.size());
InsertAndUpdateDisplayInfo(*new_info_iter);
new_displays.push_back(
CreateDisplayFromDisplayInfoById(new_info_iter->id()));
++new_info_iter;
}
}
Display old_primary;
if (delegate_) {
// Get old primary from current resolved layout, because we could be in the
// middle of updating the primary display, so screen_->GetPrimaryDisplay()
// may already point to the new primary.
if (current_resolved_layout_) {
Display* primary = FindDisplayForId(current_resolved_layout_->primary_id);
if (primary) {
old_primary = *primary;
}
}
if (!old_primary.is_valid()) {
old_primary = screen_->GetPrimaryDisplay();
}
}
// Clear focus if the display has been removed, but don't clear focus if
// the desktop has been moved from one display to another
// (mirror -> docked, docked -> single internal).
bool clear_focus =
!removed_displays.empty() &&
!(removed_displays.size() == 1 && added_display_indices.size() == 1);
if (delegate_) {
NotifyWillApplyDisplayChanges(clear_focus);
}
std::vector<size_t> updated_indices;
UpdateNonPrimaryDisplayBoundsForLayout(&new_displays, &updated_indices);
for (size_t updated_index : updated_indices) {
if (!base::Contains(added_display_indices, updated_index)) {
uint32_t metrics = DisplayObserver::DISPLAY_METRIC_BOUNDS |
DisplayObserver::DISPLAY_METRIC_WORK_AREA;
if (display_changes.find(updated_index) != display_changes.end()) {
metrics |= display_changes[updated_index];
}
display_changes[updated_index] = metrics;
}
}
if (new_displays != active_display_list_) {
DISPLAY_LOG(EVENT) << "Displays update applied"
<< ". Unified desktop allowed: "
<< unified_desktop_enabled_ << ", Multi display mode: "
<< ToString(multi_display_mode_)
<< ", count:" << new_displays.size();
for (const auto& display : new_displays) {
DISPLAY_LOG(EVENT) << display.ToString();
}
}
active_display_list_ = new_displays;
active_only_display_list_ = active_display_list_;
RefreshFontParams();
base::AutoReset<bool> resetter(&change_display_upon_host_resize_, false);
size_t active_display_list_size = active_display_list_.size();
is_updating_display_list_ = true;
// Temporarily add displays to be removed because display object
// being removed are accessed during shutting down the root.
active_display_list_.insert(active_display_list_.end(),
removed_displays.begin(), removed_displays.end());
if (!removed_displays.empty()) {
NotifyWillRemoveDisplays(removed_displays);
}
for (const auto& display : removed_displays) {
if (delegate_) {
delegate_->RemoveDisplay(display);
}
}
if (!removed_displays.empty()) {
NotifyDisplaysRemoved(removed_displays);
}
active_display_list_.resize(active_display_list_size);
is_updating_display_list_ = false;
for (size_t index : added_display_indices) {
NotifyDisplayAdded(active_display_list_[index]);
}
UpdatePrimaryDisplayIdIfNecessary();
const Display& primary = screen_->GetPrimaryDisplay();
bool notify_primary_change = delegate_ && old_primary.id() != primary.id();
for (auto& change : display_changes) {
Display& updated_display = active_display_list_[change.first];
uint32_t& updated_display_metrics = change.second;
if (notify_primary_change && updated_display.id() == primary.id()) {
updated_display_metrics |= DisplayObserver::DISPLAY_METRIC_PRIMARY;
notify_primary_change = false;
}
if (!updated_display.detected()) {
updated_display.set_detected(true);
updated_display_metrics |= DisplayObserver::DISPLAY_METRIC_DETECTED;
}
NotifyMetricsChanged(updated_display, updated_display_metrics);
}
uint32_t primary_metrics = 0;
if (notify_primary_change) {
// This happens when a primary display has moved to anther display without
// bounds change.
if (primary.id() != old_primary.id()) {
primary_metrics = DisplayObserver::DISPLAY_METRIC_PRIMARY;
if (primary.size() != old_primary.size()) {
primary_metrics |= (DisplayObserver::DISPLAY_METRIC_BOUNDS |
DisplayObserver::DISPLAY_METRIC_WORK_AREA);
}
if (primary.device_scale_factor() != old_primary.device_scale_factor()) {
primary_metrics |= DisplayObserver::DISPLAY_METRIC_DEVICE_SCALE_FACTOR;
}
}
}
bool mirror_mode = IsInMirrorMode();
if (mirror_mode != mirror_mode_for_metrics_) {
primary_metrics |= DisplayObserver::DISPLAY_METRIC_MIRROR_STATE;
mirror_mode_for_metrics_ = mirror_mode;
}
if (delegate_ && primary_metrics) {
NotifyMetricsChanged(screen_->GetPrimaryDisplay(), primary_metrics);
const auto primary_index_it = std::find(
active_display_list_.begin(), active_display_list_.end(), primary);
CHECK_EQ(primary.id(), screen_->GetPrimaryDisplay().id())
<< "Primary changed during displays update.";
CHECK(primary_index_it != active_display_list_.end())
<< "Primary display not in display list.";
const size_t primary_index =
std::distance(active_display_list_.begin(), primary_index_it);
display_changes[primary_index] |= primary_metrics;
}
UpdateInfoForRestoringMirrorMode();
if (delegate_) {
NotifyDidApplyDisplayChanges();
}
// Populate the pending change structure.
{
CHECK(pending_display_changes_.has_value());
// Currently removed displays should only be populated in
// `UpdateDisplaysWith()`.
CHECK(pending_display_changes_->removed_displays.empty());
pending_display_changes_->removed_displays = std::move(removed_displays);
base::ranges::transform(
added_display_indices,
std::back_inserter(pending_display_changes_->added_display_ids),
[this](size_t index) { return active_display_list_[index].id(); });
for (const auto& pair : display_changes) {
int64_t display_id = active_display_list_[pair.first].id();
pending_display_changes_->display_metrics_changes[display_id] |=
pair.second;
}
}
if (mirror_mode) {
UMA_HISTOGRAM_ENUMERATION(kMirroringImplementationHistogram,
IsInSoftwareMirrorMode()
? MirroringImplementation::kSoftware
: MirroringImplementation::kHardware);
UMA_HISTOGRAM_ENUMERATION(kMirrorModeTypesHistogram,
mixed_mirror_mode_params_
? MirrorModeTypes::kMixed
: MirrorModeTypes::kNormal,
MirrorModeTypes::kCount);
}
// Create the mirroring window asynchronously after all displays
// are added so that it can mirror the display newly added. This can
// happen when switching from dock mode to software mirror mode.
CreateMirrorWindowAsyncIfAny();
}
const Display& DisplayManager::GetDisplayAt(size_t index) const {
DCHECK_LT(index, active_display_list_.size());
return active_display_list_[index];
}
const Display& DisplayManager::GetPrimaryDisplayCandidate() const {
if (GetNumDisplays() != 2) {
return active_display_list_[0];
}
const DisplayLayout& layout =
layout_store_->GetRegisteredDisplayLayout(GetConnectedDisplayIdList());
return GetDisplayForId(layout.primary_id);
}
// static
const Display& DisplayManager::GetFakePrimaryDisplay() {
static Display* fake_display = nullptr;
if (!fake_display) {
fake_display = new Display(Display::GetDefaultDisplay());
// Note that if an inappropriate gfx::BufferFormat is specified in the
// gfx::DisplayColorSpaces of the fake display, this can sometimes
// propagate to allocation code and cause errors.
// https://crbug.com/1057501
gfx::DisplayColorSpaces display_color_spaces(
gfx::ColorSpace::CreateSRGB(), DisplaySnapshot::PrimaryFormat());
fake_display->SetColorSpaces(display_color_spaces);
}
return *fake_display;
}
size_t DisplayManager::GetNumDisplays() const {
return active_display_list_.size();
}
bool DisplayManager::IsActiveDisplayId(int64_t display_id) const {
return ContainsDisplayWithId(active_display_list_, display_id);
}
bool DisplayManager::IsInMirrorMode() const {
// Either software or hardware mirror mode can be active at the same time.
DCHECK(!IsInSoftwareMirrorMode() || !IsInHardwareMirrorMode());
return IsInSoftwareMirrorMode() || IsInHardwareMirrorMode();
}
bool DisplayManager::IsInSoftwareMirrorMode() const {
if (multi_display_mode_ != MIRRORING ||
software_mirroring_display_list_.empty()) {
return false;
}
// Software mirroring cannot coexist with hardware mirroring.
DCHECK(hardware_mirroring_display_id_list_.empty());
return true;
}
bool DisplayManager::IsInHardwareMirrorMode() const {
if (hardware_mirroring_display_id_list_.empty()) {
return false;
}
// Hardware mirroring is not visible to the display manager, the display mode
// should be EXTENDED.
DCHECK(multi_display_mode_ == EXTENDED);
// Hardware mirroring cannot coexist with software mirroring.
DCHECK(software_mirroring_display_list_.empty());
return true;
}
DisplayIdList DisplayManager::GetMirroringDestinationDisplayIdList() const {
if (IsInSoftwareMirrorMode()) {
return CreateDisplayIdList(software_mirroring_display_list_);
}
if (IsInHardwareMirrorMode()) {
return hardware_mirroring_display_id_list_;
}
return DisplayIdList();
}
void DisplayManager::ClearMirroringSourceAndDestination() {
mirroring_source_id_ = kInvalidDisplayId;
hardware_mirroring_display_id_list_.clear();
software_mirroring_display_list_.clear();
}
void DisplayManager::SetUnifiedDesktopEnabled(bool enable) {
if (unified_desktop_enabled_ == enable) {
return;
}
DISPLAY_LOG(EVENT) << "Unified Desktop is now " << (enable ? "" : "not ")
<< "allowed."
<< (IsInMirrorMode()
? " The displays will not be reconfigured since "
"mirror mode is active."
: "");
unified_desktop_enabled_ = enable;
// There is no need to update the displays in mirror mode. Doing
// this in hardware mirroring mode can cause crash because display
// info in hardware mirroring comes from DisplayConfigurator.
if (!IsInMirrorMode()) {
ReconfigureDisplays();
}
}
bool DisplayManager::IsInUnifiedMode() const {
return multi_display_mode_ == UNIFIED &&
!software_mirroring_display_list_.empty();
}
void DisplayManager::SetUnifiedDesktopMatrix(
const UnifiedDesktopLayoutMatrix& matrix) {
current_unified_desktop_matrix_ = matrix;
SetDefaultMultiDisplayModeForCurrentDisplays(UNIFIED);
}
Display DisplayManager::GetMirroringDisplayForUnifiedDesktop(
DisplayPositionInUnifiedMatrix cell_position) const {
if (!IsInUnifiedMode()) {
return Display();
}
DCHECK(!current_unified_desktop_matrix_.empty());
const size_t rows = current_unified_desktop_matrix_.size();
const size_t columns = current_unified_desktop_matrix_[0].size();
int64_t display_id = kInvalidDisplayId;
switch (cell_position) {
case DisplayPositionInUnifiedMatrix::kTopLeft:
display_id = current_unified_desktop_matrix_[0][0];
break;
case DisplayPositionInUnifiedMatrix::kTopRight:
display_id = current_unified_desktop_matrix_[0][columns - 1];
break;
case DisplayPositionInUnifiedMatrix::kBottomLeft:
display_id = current_unified_desktop_matrix_[rows - 1][0];
break;
}
DCHECK_NE(display_id, kInvalidDisplayId);
for (auto& display : software_mirroring_display_list_) {
if (display.id() == display_id) {
return display;
}
}
NOTREACHED_IN_MIGRATION();
return Display();
}
int DisplayManager::GetMirroringDisplayRowIndexInUnifiedMatrix(
int64_t display_id) const {
DCHECK(IsInUnifiedMode());
return mirroring_display_id_to_unified_matrix_row_.at(display_id);
}
int DisplayManager::GetUnifiedDesktopRowMaxHeight(int row_index) const {
DCHECK(IsInUnifiedMode());
return unified_display_rows_heights_.at(row_index);
}
const ManagedDisplayInfo& DisplayManager::GetDisplayInfo(
int64_t display_id) const {
DCHECK_NE(kInvalidDisplayId, display_id);
auto iter = display_info_.find(display_id);
CHECK(iter != display_info_.end()) << display_id;
return iter->second;
}
const Display DisplayManager::GetMirroringDisplayById(
int64_t display_id) const {
auto iter = base::ranges::find(software_mirroring_display_list_, display_id,
&Display::id);
return iter == software_mirroring_display_list_.end() ? GetInvalidDisplay()
: *iter;
}
std::string DisplayManager::GetDisplayNameForId(int64_t id) const {
if (id == kInvalidDisplayId) {
return l10n_util::GetStringUTF8(IDS_DISPLAY_NAME_UNKNOWN);
}
auto iter = display_info_.find(id);
if (iter != display_info_.end() && !iter->second.name().empty()) {
return iter->second.name();
}
return base::StringPrintf("Display %d", static_cast<int>(id));
}
bool DisplayManager::ShouldSetMirrorModeOn(
const DisplayIdList& new_id_list,
bool should_check_hardware_mirroring) {
DCHECK(new_id_list.size() > 1);
if (layout_store_->forced_mirror_mode_for_tablet()) {
return true;
}
if (disable_restoring_mirror_mode_for_test_) {
return false;
}
if (mixed_mirror_mode_params_) {
// Mixed mirror mode should be restored.
return true;
}
if (should_restore_mirror_mode_from_display_prefs_ ||
num_connected_displays() <= 1) {
// The ChromeOS just boots up, the display prefs have just been loaded, or
// we only have one display. Restore mirror mode based on the external
// displays' mirror info stored in the preferences. Mirror mode should be on
// if one of the external displays was in mirror mode before.
should_restore_mirror_mode_from_display_prefs_ = false;
for (int64_t id : new_id_list) {
if (external_display_mirror_info_.count(
GetDisplayIdWithoutOutputIndex(id))) {
return true;
}
}
}
// Mirror mode should remain unchanged as long as there are more than one
// connected displays.
return IsInSoftwareMirrorMode() ||
(should_check_hardware_mirroring && IsInHardwareMirrorMode());
}
void DisplayManager::SetMirrorMode(
MirrorMode mode,
const std::optional<MixedMirrorModeParams>& mixed_params) {
if (num_connected_displays() < 2) {
return;
}
// If the user turned off mirror mode, disable
// `forced_mirror_mode_for_tablet`.
if (mode != MirrorMode::kNormal &&
layout_store_->forced_mirror_mode_for_tablet()) {
layout_store_->set_forced_mirror_mode_for_tablet(false);
}
if (mode == MirrorMode::kMixed) {
// Set mixed mirror mode parameters. This will be used to do two things:
// 1. Set the specified source and destination displays in mirror mode
// configuration (We call this mode mixed mirror mode).
// 2. Restore the mixed mirror mode when display configuration changes.
mixed_mirror_mode_params_ = mixed_params;
} else {
DCHECK(mixed_params == std::nullopt);
// Clear mixed mirror mode parameters here to avoid restoring the mode after
// display configuration changes.
mixed_mirror_mode_params_ = std::nullopt;
}
const bool enabled = mode != MirrorMode::kOff;
if (configure_displays_) {
MultipleDisplayState new_state =
enabled ? MULTIPLE_DISPLAY_STATE_MULTI_MIRROR
: MULTIPLE_DISPLAY_STATE_MULTI_EXTENDED;
display_configurator_->SetMultipleDisplayState(new_state);
return;
}
multi_display_mode_ =
enabled ? MIRRORING : current_default_multi_display_mode_;
ReconfigureDisplays();
}
void DisplayManager::AddRemoveDisplay() {
ManagedDisplayInfo::ManagedDisplayModeList display_modes;
DCHECK(!active_display_list_.empty());
DisplayInfoList new_display_info_list;
const ManagedDisplayInfo& first_display =
IsInUnifiedMode()
? GetDisplayInfo(software_mirroring_display_list_[0].id())
: GetDisplayInfo(active_display_list_[0].id());
new_display_info_list.push_back(first_display);
// Add if there is only one display connected.
if (num_connected_displays() == 1) {
constexpr int kVerticalOffsetPx = 100;
constexpr int kExtraWidth = 100;
// Layout the 2nd display's host below the primary as with the real device.
gfx::Rect host_bounds = first_display.bounds_in_native();
new_display_info_list.push_back(
ManagedDisplayInfo::CreateFromSpec(base::StringPrintf(
"%d+%d-%dx%d", host_bounds.x(),
host_bounds.bottom() + kVerticalOffsetPx,
host_bounds.height() + kExtraWidth, host_bounds.height())));
// Reconnect the same display.
new_display_info_list[1].set_display_id(new_display_info_list[0].id() +
0xFFFF);
}
connected_display_id_list_ = CreateDisplayIdList(new_display_info_list);
ClearMirroringSourceAndDestination();
UpdateDisplaysWith(new_display_info_list);
}
void DisplayManager::InitConfigurator(
std::unique_ptr<NativeDisplayDelegate> delegate) {
display_configurator_ = std::make_unique<display::DisplayConfigurator>();
display_configurator_->Init(std::move(delegate),
false /* is_panel_fitting_enabled */);
display_configurator_->SetConfigureDisplays(configure_displays_);
}
void DisplayManager::ForceInitialConfigureWithObservers(
display::DisplayChangeObserver* display_change_observer,
display::DisplayConfigurator::Observer* display_error_observer) {
// Register |display_change_observer_| first so that the rest of
// observer gets invoked after the root windows are configured.
display_configurator_->AddObserver(display_change_observer);
display_configurator_->AddObserver(display_error_observer);
display_configurator_->set_state_controller(display_change_observer);
display_configurator_->set_mirroring_controller(this);
display_configurator_->ForceInitialConfigure();
}
void DisplayManager::SetSoftwareMirroring(bool enabled) {
SetMultiDisplayMode(enabled ? MIRRORING
: current_default_multi_display_mode_);
}
bool DisplayManager::SoftwareMirroringEnabled() const {
return multi_display_mode_ == MIRRORING;
}
bool DisplayManager::IsSoftwareMirroringEnforced() const {
// There is no source display for hardware mirroring, so enforce software
// mirroring if the mixed mirror mode parameters are specified.
// Enforce software mirroring if tablet mode is enabled as well because
// the tablet's rotation should be offset in external display.
return !!mixed_mirror_mode_params_ ||
layout_store_->forced_mirror_mode_for_tablet();
}
void DisplayManager::SetTouchCalibrationData(
int64_t display_id,
const TouchCalibrationData::CalibrationPointPairQuad& point_pair_quad,
const gfx::Size& display_bounds,
const ui::TouchscreenDevice& touchdevice,
bool apply_spatial_calibration) {
// We do not proceed with setting the calibration and association if the
// touch device identified by |touch_device_identifier| is an internal touch
// device.
if (touchdevice.type == ui::InputDeviceType::INPUT_DEVICE_INTERNAL) {
return;
}
// Id of the display the touch device in context is currently associated
// with. This display id will be equal to |display_id| if no reassociation is
// being performed.
int64_t previous_display_id =
touch_device_manager_->GetAssociatedDisplay(touchdevice);
bool update_add_support = false;
bool update_remove_support = false;
if (apply_spatial_calibration) {
TouchCalibrationData calibration_data(point_pair_quad, display_bounds);
touch_device_manager_->AddTouchCalibrationData(touchdevice, display_id,
calibration_data);
} else {
touch_device_manager_->AddTouchAssociation(touchdevice, display_id);
}
DisplayInfoList display_info_list;
for (const auto& display : active_display_list_) {
ManagedDisplayInfo info = GetDisplayInfo(display.id());
if (info.id() == display_id) {
info.set_touch_support(Display::TouchSupport::AVAILABLE);
update_add_support = true;
} else if (info.id() == previous_display_id) {
// Since we are reassociating the touch device to another display, we need
// to check whether the display it was previous connected to still
// supports touch.
if (!touch_device_manager_
->GetAssociatedTouchDevicesForDisplay(previous_display_id)
.empty()) {
info.set_touch_support(Display::TouchSupport::UNAVAILABLE);
update_remove_support = true;
}
}
display_info_list.push_back(info);
}
// Update the non active displays.
if (!update_add_support) {
display_info_[display_id].set_touch_support(
Display::TouchSupport::AVAILABLE);
}
if (!update_remove_support &&
!touch_device_manager_
->GetAssociatedTouchDevicesForDisplay(previous_display_id)
.empty()) {
display_info_[previous_display_id].set_touch_support(
Display::TouchSupport::UNAVAILABLE);
}
// Update the active displays.
if (update_add_support || update_remove_support) {
UpdateDisplaysWith(display_info_list);
}
}
void DisplayManager::ClearTouchCalibrationData(
int64_t display_id,
std::optional<ui::TouchscreenDevice> touchdevice) {
if (touchdevice) {
touch_device_manager_->ClearTouchCalibrationData(*touchdevice, display_id);
} else {
touch_device_manager_->ClearAllTouchCalibrationData(display_id);
}
DisplayInfoList display_info_list;
for (const auto& display : active_display_list_) {
ManagedDisplayInfo info = GetDisplayInfo(display.id());
display_info_list.push_back(info);
}
UpdateDisplaysWith(display_info_list);
}
void DisplayManager::UpdateZoomFactor(int64_t display_id, float zoom_factor) {
DCHECK(zoom_factor > 0);
DCHECK_NE(display_id, kInvalidDisplayId);
auto iter = display_info_.find(display_id);
if (iter == display_info_.end()) {
return;
}
if (IsInternalDisplayId(display_id)) {
on_display_zoom_modify_timeout_.Cancel();
on_display_zoom_modify_timeout_.Reset(
base::BindOnce(&OnInternalDisplayZoomChanged, zoom_factor));
base::SingleThreadTaskRunner::GetCurrentDefault()->PostDelayedTask(
FROM_HERE, on_display_zoom_modify_timeout_.callback(),
base::Seconds(kDisplayZoomModifyTimeoutSec));
}
iter->second.set_zoom_factor(zoom_factor);
ManagedDisplayMode mode;
GetActiveModeForDisplayId(display_id, &mode);
iter->second.AddZoomFactorForSize(mode.size().ToString(), zoom_factor);
for (const auto& display : active_display_list_) {
if (display.id() == display_id) {
UpdateDisplays();
break;
}
}
}
bool DisplayManager::HasUnassociatedDisplay() const {
return display_configurator_->has_unassociated_display();
}
void DisplayManager::SetDefaultMultiDisplayModeForCurrentDisplays(
MultiDisplayMode mode) {
DCHECK_NE(MIRRORING, mode);
DisplayIdList list = GetConnectedDisplayIdList();
layout_store_->UpdateDefaultUnified(list, mode == UNIFIED);
ReconfigureDisplays();
}
void DisplayManager::SetMultiDisplayMode(MultiDisplayMode mode) {
multi_display_mode_ = mode;
}
void DisplayManager::ReconfigureDisplays() {
DisplayInfoList display_info_list;
for (const Display& display : active_display_list_) {
if (display.id() == kUnifiedDisplayId) {
continue;
}
display_info_list.push_back(GetDisplayInfo(display.id()));
}
for (const Display& display : software_mirroring_display_list_) {
display_info_list.push_back(GetDisplayInfo(display.id()));
}
ClearMirroringSourceAndDestination();
UpdateDisplaysWith(display_info_list);
}
bool DisplayManager::UpdateDisplayBounds(int64_t display_id,
const gfx::Rect& new_bounds) {
if (!change_display_upon_host_resize_) {
return false;
}
display_info_[display_id].SetBounds(new_bounds);
// Don't notify observers if the mirrored window has changed.
if (IsInSoftwareMirrorMode() &&
base::Contains(software_mirroring_display_list_, display_id,
&Display::id)) {
return false;
}
// In unified mode then |active_display_list_| won't have a display for
// |display_id| but |software_mirroring_display_list_| should. Reconfigure
// the displays so the unified display size is recomputed.
if (IsInUnifiedMode() &&
ContainsDisplayWithId(software_mirroring_display_list_, display_id)) {
DCHECK(!IsActiveDisplayId(display_id));
ReconfigureDisplays();
return true;
}
Display* display = FindDisplayForId(display_id);
DCHECK(display);
display->SetSize(display_info_[display_id].size_in_pixel());
BeginEndNotifier notifier(this);
NotifyMetricsChanged(*display, DisplayObserver::DISPLAY_METRIC_BOUNDS);
CHECK(pending_display_changes_.has_value());
pending_display_changes_->display_metrics_changes[display->id()] |=
DisplayObserver::DISPLAY_METRIC_BOUNDS;
return true;
}
void DisplayManager::CreateMirrorWindowAsyncIfAny() {
// Do not post a task if the software mirroring doesn't exist, or
// during initialization when compositor's init task isn't posted yet.
// ash::Shell::Init() will call this after the compositor is initialized.
if (software_mirroring_display_list_.empty() || !delegate_) {
return;
}
base::SingleThreadTaskRunner::GetCurrentDefault()->PostTask(
FROM_HERE, base::BindOnce(&DisplayManager::CreateMirrorWindowIfAny,
weak_ptr_factory_.GetWeakPtr()));
}
void DisplayManager::UpdateInternalManagedDisplayModeListForTest() {
if (!HasInternalDisplay() ||
display_info_.count(Display::InternalDisplayId()) == 0) {
return;
}
ManagedDisplayInfo* info = &display_info_[Display::InternalDisplayId()];
SetInternalManagedDisplayModeList(info);
}
bool DisplayManager::ZoomDisplay(int64_t display_id, bool up) {
if (IsInUnifiedMode()) {
DCHECK_EQ(display_id, kUnifiedDisplayId);
const ManagedDisplayInfo& display_info = GetDisplayInfo(display_id);
ManagedDisplayMode mode;
bool result = GetDisplayModeForNextResolution(display_info, up, &mode);
return result ? SetDisplayMode(display_id, mode) : false;
}
ManagedDisplayMode display_mode;
if (!GetActiveModeForDisplayId(display_id, &display_mode)) {
return false;
}
auto iter = display_info_.find(display_id);
if (iter == display_info_.end()) {
return false;
}
const float current_display_zoom = iter->second.zoom_factor();
// Find the index of |current_display_zoom| in |zooms|. The nearest value is
// used if the exact match is not found.
const std::vector<float> zooms = GetDisplayZoomFactors(display_mode);
std::size_t zoom_idx = 0;
float min_diff = std::abs(zooms[zoom_idx] - current_display_zoom);
for (std::size_t i = 1; i < zooms.size(); i++) {
const float diff = std::abs(current_display_zoom - zooms[i]);
if (diff < min_diff) {
min_diff = diff;
zoom_idx = i;
}
}
// The index of the next zoom value.
const std::size_t next_zoom_idx = zoom_idx + (up ? -1 : 1);
// If the zoom index is out of bounds, that is, the display is already at
// maximum or minimum zoom then do nothing.
if (next_zoom_idx < 0 || next_zoom_idx >= zooms.size()) {
return false;
}
// Update zoom factor via the display manager API to ensure UMA metrics are
// recorded.
UpdateZoomFactor(display_id, zooms[next_zoom_idx]);
return true;
}
void DisplayManager::ResetDisplayZoom(int64_t display_id) {
if (IsInUnifiedMode()) {
DCHECK_EQ(display_id, kUnifiedDisplayId);
const ManagedDisplayInfo& display_info = GetDisplayInfo(kUnifiedDisplayId);
const ManagedDisplayInfo::ManagedDisplayModeList& modes =
display_info.display_modes();
auto iter = base::ranges::find_if(modes, &ManagedDisplayMode::native);
SetDisplayMode(kUnifiedDisplayId, *iter);
return;
}
auto iter = display_info_.find(display_id);
if (iter == display_info_.end()) {
return;
}
if (std::abs(iter->second.zoom_factor() - 1.f) > 0.001f) {
iter->second.set_zoom_factor(1.f);
UpdateDisplays();
}
}
void DisplayManager::CreateSoftwareMirroringDisplayInfo(
DisplayInfoList* display_info_list) {
// Use the internal display or 1st as the mirror source, then scale
// the root window so that it matches the external display's
// resolution. This is necessary in order for scaling to work while
// mirrored.
switch (multi_display_mode_) {
case MIRRORING: {
if (display_info_list->size() < 2) {
return;
}
std::set<int64_t> destination_ids;
int64_t source_id = kInvalidDisplayId;
if (mixed_mirror_mode_params_) {
// Use the specified source and destination displays if mixed mirror
// mode is requested.
source_id = mixed_mirror_mode_params_->source_id;
for (auto id : mixed_mirror_mode_params_->destination_ids) {
destination_ids.insert(id);
}
} else {
// Select a default source display and treat all other connected
// displays as destination.
if (HasInternalDisplay()) {
// Use the internal display as mirroring source.
source_id = Display::InternalDisplayId();
if (!base::Contains(*display_info_list, source_id,
&ManagedDisplayInfo::id)) {
// It is possible that internal display is removed (e.g. Use
// Chromebook in Dock mode with two or more external displays). In
// this case, we use the first connected display as mirroring
// source.
source_id = first_display_id_;
}
} else {
// Use the first connected display as mirroring source
source_id = first_display_id_;
}
DCHECK(source_id != kInvalidDisplayId);
for (auto& info : *display_info_list) {
if (source_id != info.id()) {
destination_ids.insert(info.id());
}
}
}
for (auto iter = display_info_list->begin();
iter != display_info_list->end();) {
if (destination_ids.count(iter->id())) {
iter->SetOverscanInsets(gfx::Insets());
InsertAndUpdateDisplayInfo(*iter);
software_mirroring_display_list_.emplace_back(
CreateMirroringDisplayFromDisplayInfoById(iter->id(),
gfx::Point(), 1.0f));
// Remove the destination display.
iter = display_info_list->erase(iter);
} else {
++iter;
}
}
mirroring_source_id_ = source_id;
break;
}
case UNIFIED:
CreateUnifiedDesktopDisplayInfo(display_info_list);
break;
case EXTENDED:
break;
}
}
void DisplayManager::CreateUnifiedDesktopDisplayInfo(
DisplayInfoList* display_info_list) {
if (display_info_list->size() == 1) {
return;
}
for (auto& display_info : *display_info_list) {
auto it = display_info_.find(display_info.id());
if (it != display_info_.end()) {
display_info.SetRotation(
it->second.GetRotation(Display::RotationSource::USER),
Display::RotationSource::USER);
display_info.SetRotation(
it->second.GetRotation(Display::RotationSource::ACTIVE),
Display::RotationSource::ACTIVE);
display_info.UpdateDisplaySize();
}
}
if (!ValidateMatrix(current_unified_desktop_matrix_) ||
!ValidateMatrixForDisplayInfoList(*display_info_list,
current_unified_desktop_matrix_)) {
// Recreate the default matrix where displays are laid out horizontally from
// left to right.
current_unified_desktop_matrix_.clear();
current_unified_desktop_matrix_.resize(1);
for (const auto& info : *display_info_list) {
current_unified_desktop_matrix_[0].emplace_back(info.id());
}
}
software_mirroring_display_list_.clear();
mirroring_display_id_to_unified_matrix_row_.clear();
unified_display_rows_heights_.clear();
const size_t num_rows = current_unified_desktop_matrix_.size();
const size_t num_columns = current_unified_desktop_matrix_[0].size();
// 1 - Find the maximum height per each row.
std::vector<int> rows_max_heights;
rows_max_heights.reserve(num_rows);
for (const auto& row : current_unified_desktop_matrix_) {
int max_height = std::numeric_limits<int>::min();
for (const auto& id : row) {
const ManagedDisplayInfo* info = FindInfoById(*display_info_list, id);
DCHECK(info);
max_height = std::max(max_height, info->size_in_pixel().height());
}
rows_max_heights.emplace_back(max_height);
}
// 2 - Use the maximum height per each row to calculate the scale value for
// each display in each row so that it fits the max row height. Use that
// to calculate the total bounds of each row after all displays has been
// scaled.
// Holds the scale value of each display in the matrix.
std::vector<std::vector<float>> scales;
scales.resize(num_rows);
// Holds the total bounds of each row in the matrix.
std::vector<gfx::Rect> rows_bounds;
rows_bounds.reserve(num_rows);
// Calculate the bounds of each row, and the maximum row width.
int max_total_width = std::numeric_limits<int>::min();
for (size_t i = 0; i < num_rows; ++i) {
const auto& row = current_unified_desktop_matrix_[i];
const int max_row_height = rows_max_heights[i];
gfx::Rect this_row_bounds;
scales[i].resize(num_columns);
for (size_t j = 0; j < num_columns; ++j) {
const auto& id = row[j];
const ManagedDisplayInfo* info = FindInfoById(*display_info_list, id);
DCHECK(info);
InsertAndUpdateDisplayInfo(*info);
const float scale =
info->size_in_pixel().height() / static_cast<float>(max_row_height);
scales[i][j] = scale;
const gfx::Point origin(this_row_bounds.right(), 0);
const auto display_bounds = gfx::Rect(
origin, gfx::ScaleToFlooredSize(info->size_in_pixel(), 1.0f / scale));
this_row_bounds.Union(display_bounds);
}
rows_bounds.emplace_back(this_row_bounds);
max_total_width = std::max(max_total_width, this_row_bounds.width());
}
// 3 - Using the maximum row width, adjust the display scales so that each
// row width fits the maximum row width.
for (size_t i = 0; i < num_rows; ++i) {
const auto& row_bound = rows_bounds[i];
const float scale = row_bound.width() / static_cast<float>(max_total_width);
auto& row_scales = scales[i];
for (auto& display_scale : row_scales) {
display_scale *= scale;
}
}
// 4 - Now that we know the final scales, compute the unified display size by
// computing the unified display size of each row and then getting the
// union of all rows.
gfx::Rect unified_bounds; // Will hold the final unified bounds.
std::vector<UnifiedDisplayModeParam> modes_param_list;
modes_param_list.reserve(num_rows * num_columns);
int internal_display_index = -1;
for (size_t i = 0; i < num_rows; ++i) {
const auto& row = current_unified_desktop_matrix_[i];
gfx::Rect row_displays_bounds;
for (size_t j = 0; j < num_columns; ++j) {
const auto& id = row[j];
if (internal_display_index == -1 && IsInternalDisplayId(id)) {
internal_display_index = i * num_columns + j;
}
const ManagedDisplayInfo* info = FindInfoById(*display_info_list, id);
DCHECK(info);
const float scale = scales[i][j];
const gfx::Point origin(row_displays_bounds.right(),
unified_bounds.bottom());
// The display is scaled to fit the unified desktop size.
Display display =
CreateMirroringDisplayFromDisplayInfoById(id, origin, 1.0f / scale);
row_displays_bounds.Union(display.bounds());
modes_param_list.emplace_back(info->device_scale_factor(), scale, false);
software_mirroring_display_list_.emplace_back(display);
}
unified_bounds.Union(row_displays_bounds);
}
// The index of the display that will be used for the default native mode.
const int default_mode_param_index =
internal_display_index != -1 ? internal_display_index : 0;
modes_param_list[default_mode_param_index].is_default_mode = true;
// 5 - Create the Unified display info and its modes.
ManagedDisplayInfo unified_display_info(kUnifiedDisplayId, "Unified Desktop",
/*has_overscan=*/false);
ManagedDisplayMode native_mode(unified_bounds.size(), 60.0f, false, true,
/*device_scale_factor=*/1.0);
ManagedDisplayInfo::ManagedDisplayModeList modes =
CreateUnifiedManagedDisplayModeList(native_mode, modes_param_list);
// Find the default mode.
auto default_mode_iter =
base::ranges::find_if(modes, &ManagedDisplayMode::native);
DCHECK(default_mode_iter != modes.end());
if (default_mode_iter != modes.end()) {
const ManagedDisplayMode& default_mode = *default_mode_iter;
unified_display_info.set_device_scale_factor(
default_mode.device_scale_factor());
unified_display_info.SetBounds(gfx::Rect(default_mode.size()));
}
unified_display_info.SetManagedDisplayModes(modes);
// Forget the configured resolution if the original unified desktop resolution
// has changed.
if (display_info_.count(kUnifiedDisplayId) != 0 &&
GetMaxNativeSize(display_info_[kUnifiedDisplayId]) !=
unified_bounds.size()) {
display_modes_.erase(kUnifiedDisplayId);
}
// 6 - Set the selected mode.
ManagedDisplayMode selected_mode;
if (GetSelectedModeForDisplayId(kUnifiedDisplayId, &selected_mode) &&
FindDisplayMode(unified_display_info, selected_mode) !=
unified_display_info.display_modes().end()) {
unified_display_info.set_device_scale_factor(
selected_mode.device_scale_factor());
unified_display_info.SetBounds(gfx::Rect(selected_mode.size()));
} else {
display_modes_.erase(kUnifiedDisplayId);
}
const float unified_bounds_scale_y =
unified_display_info.size_in_pixel().height() /
static_cast<float>(unified_bounds.size().height());
// 7 - Now that we know the final unified display bounds, update the displays
// in the |software_mirroring_display_list_| list so that they have the
// correct bounds.
DCHECK_EQ(num_rows * num_columns, software_mirroring_display_list_.size());
int last_bottom = 0;
for (size_t i = 0; i < num_rows; ++i) {
int last_right = 0;
int max_height = std::numeric_limits<int>::min();
for (size_t j = 0; j < num_columns; ++j) {
Display& current_display =
software_mirroring_display_list_[i * num_columns + j];
gfx::SizeF scaled_size(current_display.bounds().size());
scaled_size.Scale(unified_bounds_scale_y);
const gfx::Point origin(last_right, last_bottom);
current_display.set_bounds(
gfx::Rect(origin, gfx::ToRoundedSize(scaled_size)));
current_display.UpdateWorkAreaFromInsets(gfx::Insets());
const gfx::Rect display_bounds = current_display.bounds();
max_height = std::max(max_height, display_bounds.height());
last_right = display_bounds.right();
mirroring_display_id_to_unified_matrix_row_[current_display.id()] = i;
}
unified_display_rows_heights_.emplace_back(max_height);
last_bottom += max_height;
}
DCHECK_EQ(num_rows, unified_display_rows_heights_.size());
display_info_list->clear();
display_info_list->emplace_back(unified_display_info);
InsertAndUpdateDisplayInfo(unified_display_info);
UMA_HISTOGRAM_ENUMERATION(
"DisplayManager.UnifiedDesktopDisplayCountRange",
GetDisplayCountRange(software_mirroring_display_list_.size()),
DisplayCountRange::kCount);
}
Display* DisplayManager::FindDisplayForId(int64_t id) {
auto iter = base::ranges::find(active_display_list_, id, &Display::id);
if (iter != active_display_list_.end()) {
return &(*iter);
}
return nullptr;
}
void DisplayManager::AddMirrorDisplayInfoIfAny(
DisplayInfoList* display_info_list) {
if (!IsInSoftwareMirrorMode()) {
return;
}
for (const auto& display : software_mirroring_display_list_) {
display_info_list->emplace_back(GetDisplayInfo(display.id()));
}
software_mirroring_display_list_.clear();
}
void DisplayManager::InsertAndUpdateDisplayInfo(
const ManagedDisplayInfo& new_info) {
ManagedDisplayInfo* info = nullptr;
auto it = display_info_.find(new_info.id());
if (it != display_info_.end()) {
info = &(it->second);
info->Copy(new_info);
} else {
info = &display_info_[new_info.id()];
*info = new_info;
// Set from_native_platform to false so that all information
// (rotation, zoom factor etc.) is copied.
info->set_from_native_platform(false);
// If an external display is plugged in for the first time and doesn't have
// any entry in display_info_, such as those from Pref or from previous
// config, apply recommended default zoom factor.
ApplyDefaultZoomFactorIfNecessary(*info);
}
CHECK(info);
info->UpdateDisplaySize();
}
void DisplayManager::ApplyDefaultZoomFactorIfNecessary(
ManagedDisplayInfo& info) {
// Only apply to external display. The internal display has good handle of
// default dpi.
if (IsInternalDisplayId(info.id())) {
return;
}
// Ignore unified display.
if (info.id() == kUnifiedDisplayId) {
return;
}
info.UpdateZoomFactorToMatchTargetDPI();
}
Display DisplayManager::CreateDisplayFromDisplayInfoById(int64_t id) {
DCHECK(display_info_.find(id) != display_info_.end()) << "id=" << id;
const ManagedDisplayInfo& display_info = display_info_[id];
Display new_display(display_info.id());
gfx::Rect bounds_in_native(display_info.size_in_pixel());
float device_scale_factor = display_info.GetEffectiveDeviceScaleFactor();
// Simply set the origin to (0,0). The primary display's origin is
// always (0,0) and the bounds of non-primary display(s) will be updated
// in |UpdateNonPrimaryDisplayBoundsForLayout| called in |UpdateDisplay|.
new_display.SetScaleAndBounds(device_scale_factor,
gfx::Rect(bounds_in_native.size()));
new_display.set_rotation(display_info.GetActiveRotation());
new_display.set_panel_rotation(display_info.GetLogicalActiveRotation());
new_display.set_touch_support(display_info.touch_support());
new_display.set_maximum_cursor_size(display_info.maximum_cursor_size());
new_display.SetColorSpaces(display_info.display_color_spaces());
new_display.set_display_frequency(display_info.refresh_rate());
new_display.set_label(display_info.name());
new_display.set_detected(display_info.detected());
constexpr uint32_t kNormalBitDepthNumBitsPerChannel = 8u;
if (display_info.bits_per_channel() > kNormalBitDepthNumBitsPerChannel) {
new_display.set_depth_per_component(display_info.bits_per_channel());
constexpr uint32_t kRGBNumChannels = 3u;
new_display.set_color_depth(display_info.bits_per_channel() *
kRGBNumChannels);
}
if (internal_display_has_accelerometer_ && IsInternalDisplayId(id)) {
new_display.set_accelerometer_support(
Display::AccelerometerSupport::AVAILABLE);
} else {
new_display.set_accelerometer_support(
Display::AccelerometerSupport::UNAVAILABLE);
}
return new_display;
}
Display DisplayManager::CreateMirroringDisplayFromDisplayInfoById(
int64_t id,
const gfx::Point& origin,
float scale) {
DCHECK(display_info_.find(id) != display_info_.end()) << "id=" << id;
const ManagedDisplayInfo& display_info = display_info_[id];
Display new_display(display_info.id());
new_display.SetScaleAndBounds(
1.0f, gfx::Rect(origin, gfx::ScaleToFlooredSize(
display_info.size_in_pixel(), scale)));
new_display.set_touch_support(display_info.touch_support());
new_display.set_maximum_cursor_size(display_info.maximum_cursor_size());
new_display.set_rotation(display_info.GetActiveRotation());
new_display.set_panel_rotation(display_info.GetLogicalActiveRotation());
new_display.set_label(display_info.name());
return new_display;
}
void DisplayManager::UpdateNonPrimaryDisplayBoundsForLayout(
Displays* display_list,
std::vector<size_t>* updated_indices) {
if (display_list->size() == 1u) {
return;
}
const DisplayLayout& layout =
layout_store_->GetRegisteredDisplayLayout(GetConnectedDisplayIdList());
DCHECK(IsConnectedDisplayIdListInSyncWithCurrentState(
CreateDisplayIdList(*display_list)));
// Ignore if a user has a old format (should be extremely rare)
// and this will be replaced with DCHECK.
if (layout.primary_id == kInvalidDisplayId) {
return;
}
// display_list does not have translation set, so ApplyDisplayLayout cannot
// provide accurate change information. We'll find the changes after the call.
current_resolved_layout_ = layout.Copy();
ApplyDisplayLayout(current_resolved_layout_.get(), display_list, nullptr);
size_t num_displays = display_list->size();
for (size_t index = 0; index < num_displays; ++index) {
const Display& display = (*display_list)[index];
int64_t id = display.id();
const Display* active_display = FindDisplayForId(id);
if (!active_display || (active_display->bounds() != display.bounds())) {
updated_indices->push_back(index);
}
}
}
void DisplayManager::CreateMirrorWindowIfAny() {
if (!software_mirroring_display_list_.empty() && delegate_) {
DisplayInfoList list;
for (auto& display : software_mirroring_display_list_) {
list.push_back(GetDisplayInfo(display.id()));
}
delegate_->CreateOrUpdateMirroringDisplay(list);
}
if (created_mirror_window_) {
std::move(created_mirror_window_).Run();
}
DCHECK(IsConnectedDisplayIdListInSyncWithCurrentState(
CreateDisplayIdList(active_display_list())));
}
void DisplayManager::ApplyDisplayLayout(DisplayLayout* layout,
Displays* display_list,
std::vector<int64_t>* updated_ids) {
if (multi_display_mode_ == UNIFIED) {
// Applying the layout in unified mode doesn't make sense, since there's no
// layout.
return;
}
// In mixed mirror mode, temporarily remove the mirror destination from the
// layout.
if (mixed_mirror_mode_params_) {
std::unique_ptr<DisplayLayout> temp_layout = layout->Copy();
temp_layout->RemoveDisplayPlacements(
mixed_mirror_mode_params_->destination_ids);
temp_layout->ApplyToDisplayList(display_list, updated_ids,
kMinimumOverlapForInvalidOffset);
} else {
layout->ApplyToDisplayList(display_list, updated_ids,
kMinimumOverlapForInvalidOffset);
}
}
void DisplayManager::RunPendingTasksForTest() {
if (software_mirroring_display_list_.empty()) {
return;
}
base::RunLoop run_loop;
created_mirror_window_ = run_loop.QuitClosure();
run_loop.Run();
}
void DisplayManager::SetTabletState(const TabletState& tablet_state) {
tablet_state_ = tablet_state;
for (auto& display_observer : display_observers_) {
display_observer.OnDisplayTabletStateChanged(tablet_state);
}
}
void DisplayManager::NotifyMetricsChanged(const Display& display,
uint32_t metrics) {
if (delegate_) {
delegate_->UpdateDisplayMetrics(display, metrics);
}
for (auto& display_observer : display_observers_) {
display_observer.OnDisplayMetricsChanged(display, metrics);
}
}
void DisplayManager::NotifyDisplayAdded(const Display& display) {
if (delegate_) {
in_creating_display_.emplace(display.id());
delegate_->CreateDisplay(display);
in_creating_display_.reset();
}
for (auto& display_observer : display_observers_) {
display_observer.OnDisplayAdded(display);
}
}
void DisplayManager::NotifyWillRemoveDisplays(const Displays& displays) {
for (auto& display_observer : display_observers_) {
display_observer.OnWillRemoveDisplays(displays);
}
}
void DisplayManager::NotifyDisplaysRemoved(const Displays& displays) {
for (auto& display_observer : display_observers_) {
display_observer.OnDisplaysRemoved(displays);
}
}
void DisplayManager::NotifyDisplaysInitialized() {
for (auto& manager_observer : manager_observers_) {
manager_observer.OnDisplaysInitialized();
}
}
void DisplayManager::NotifyWillProcessDisplayChanges() {
for (auto& manager_observer : manager_observers_) {
manager_observer.OnWillProcessDisplayChanges();
}
}
void DisplayManager::NotifyDidProcessDisplayChanges(
const DisplayManagerObserver::DisplayConfigurationChange& config_change) {
// Notifying observers may lead to further config changes, create a notifier
// to capture these here while preserving notification ordering.
CHECK(!pending_display_changes_.has_value());
BeginEndNotifier notifier(this, /*notify_on_pending_change_only=*/true);
for (auto& manager_observer : manager_observers_) {
manager_observer.OnDidProcessDisplayChanges(config_change);
}
}
void DisplayManager::NotifyWillApplyDisplayChanges(bool clear_focus) {
delegate_->PreDisplayConfigurationChange(clear_focus);
for (auto& manager_observer : manager_observers_) {
manager_observer.OnWillApplyDisplayChanges();
}
}
void DisplayManager::NotifyDidApplyDisplayChanges() {
delegate_->PostDisplayConfigurationChange();
for (auto& manager_observer : manager_observers_) {
manager_observer.OnDidApplyDisplayChanges();
}
}
void DisplayManager::AddDisplayObserver(DisplayObserver* display_observer) {
display_observers_.AddObserver(display_observer);
}
void DisplayManager::RemoveDisplayObserver(DisplayObserver* display_observer) {
display_observers_.RemoveObserver(display_observer);
}
void DisplayManager::AddDisplayManagerObserver(
DisplayManagerObserver* manager_observer) {
manager_observers_.AddObserver(manager_observer);
}
void DisplayManager::RemoveDisplayManagerObserver(
DisplayManagerObserver* manager_observer) {
manager_observers_.RemoveObserver(manager_observer);
}
display::TabletState DisplayManager::GetTabletState() const {
return tablet_state_;
}
void DisplayManager::UpdateInfoForRestoringMirrorMode() {
if (num_connected_displays() <= 1) {
return;
}
// The display prefs have just been loaded and we're waiting for the
// reconfiguration of the displays to apply the newly loaded prefs. We should
// not overwrite the newly-loaded external display mirror configs.
// https://crbug.com/936884.
if (should_restore_mirror_mode_from_display_prefs_) {
return;
}
// External displays mirrored because of forced tablet mode mirroring should
// not be considered candidates for restoring their mirrored state.
// https://crbug.com/919994.
if (layout_store_->forced_mirror_mode_for_tablet()) {
return;
}
for (auto id : GetConnectedDisplayIdList()) {
if (IsInternalDisplayId(id)) {
continue;
}
// Mask the output index out (8 bits) so that the user does not have to
// reconnect a display to the same port to restore mirror mode.
int64_t masked_id = GetDisplayIdWithoutOutputIndex(id);
if (IsInMirrorMode()) {
external_display_mirror_info_.emplace(masked_id);
} else {
external_display_mirror_info_.erase(masked_id);
}
}
}
void DisplayManager::UpdatePrimaryDisplayIdIfNecessary() {
if (num_connected_displays() < 2) {
return;
}
const display::DisplayIdList list = GetConnectedDisplayIdList();
const display::DisplayLayout& layout =
layout_store()->GetRegisteredDisplayLayout(list);
layout_store()->UpdateDefaultUnified(list, layout.default_unified);
if (delegate_ && GetNumDisplays() > 1) {
delegate_->SetPrimaryDisplayId(
layout.primary_id == display::kInvalidDisplayId ? list[0]
: layout.primary_id);
}
}
} // namespace display
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