blob: e906468117035fea47b60323d4ec1018e87ba541 [file] [log] [blame]
// Copyright 2013 The Chromium Authors. All rights reserved.
// 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_change_observer.h"
#include <algorithm>
#include <map>
#include <set>
#include <string>
#include <utility>
#include <vector>
#include "base/logging.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/user_activity/user_activity_detector.h"
#include "ui/display/display.h"
#include "ui/display/display_layout.h"
#include "ui/display/display_switches.h"
#include "ui/display/manager/display_layout_store.h"
#include "ui/display/manager/display_manager.h"
#include "ui/display/manager/display_manager_utilities.h"
#include "ui/display/manager/touch_device_manager.h"
#include "ui/display/types/display_mode.h"
#include "ui/display/types/display_snapshot.h"
#include "ui/display/util/display_util.h"
#include "ui/display/util/edid_parser.h"
#include "ui/events/devices/input_device_manager.h"
#include "ui/events/devices/touchscreen_device.h"
#include "ui/strings/grit/ui_strings.h"
namespace display {
namespace {
// The DPI threshold to determine the device scale factor.
// DPI higher than |dpi| will use |device_scale_factor|.
struct DeviceScaleFactorDPIThreshold {
float dpi;
float device_scale_factor;
};
// Update the list of zoom levels whenever a new device scale factor is added
// here. See zoom level list in /ui/display/manager/display_util.cc
const DeviceScaleFactorDPIThreshold kThresholdTableForInternal[] = {
{270.0f, 2.25f},
{220.0f, 2.0f},
{180.0f, 1.6f},
{150.0f, 1.25f},
{0.0f, 1.0f},
};
} // namespace
// static
ManagedDisplayInfo::ManagedDisplayModeList
DisplayChangeObserver::GetInternalManagedDisplayModeList(
const ManagedDisplayInfo& display_info,
const DisplaySnapshot& output) {
const DisplayMode* ui_native_mode = output.native_mode();
ManagedDisplayMode native_mode(ui_native_mode->size(),
ui_native_mode->refresh_rate(),
ui_native_mode->is_interlaced(), true,
display_info.device_scale_factor());
return CreateInternalManagedDisplayModeList(native_mode);
}
// static
ManagedDisplayInfo::ManagedDisplayModeList
DisplayChangeObserver::GetExternalManagedDisplayModeList(
const DisplaySnapshot& output) {
using DisplayModeMap = std::map<std::pair<int, int>, ManagedDisplayMode>;
DisplayModeMap display_mode_map;
ManagedDisplayMode native_mode;
for (const auto& mode_info : output.modes()) {
const std::pair<int, int> size(mode_info->size().width(),
mode_info->size().height());
ManagedDisplayMode display_mode(
mode_info->size(), mode_info->refresh_rate(),
mode_info->is_interlaced(), output.native_mode() == mode_info.get(),
1.0);
if (display_mode.native())
native_mode = display_mode;
// Add the display mode if it isn't already present and override interlaced
// display modes with non-interlaced ones. We prioritize having non
// interlaced mode over refresh rate. A mode having lower refresh rate
// but is not interlaced will be picked over a mode having high refresh
// rate but is interlaced.
auto display_mode_it = display_mode_map.find(size);
if (display_mode_it == display_mode_map.end()) {
display_mode_map.insert(std::make_pair(size, display_mode));
} else if (display_mode_it->second.is_interlaced() &&
!display_mode.is_interlaced()) {
display_mode_it->second = std::move(display_mode);
} else if (!display_mode.is_interlaced() &&
display_mode_it->second.refresh_rate() <
display_mode.refresh_rate()) {
display_mode_it->second = std::move(display_mode);
}
}
ManagedDisplayInfo::ManagedDisplayModeList display_mode_list;
for (const auto& display_mode_pair : display_mode_map)
display_mode_list.push_back(std::move(display_mode_pair.second));
if (output.native_mode()) {
const std::pair<int, int> size(native_mode.size().width(),
native_mode.size().height());
auto it = display_mode_map.find(size);
DCHECK(it != display_mode_map.end())
<< "Native mode must be part of the mode list.";
// If the native mode was replaced re-add it.
if (!it->second.native())
display_mode_list.push_back(native_mode);
}
return display_mode_list;
}
DisplayChangeObserver::DisplayChangeObserver(
DisplayConfigurator* display_configurator,
DisplayManager* display_manager)
: display_configurator_(display_configurator),
display_manager_(display_manager) {
ui::InputDeviceManager::GetInstance()->AddObserver(this);
}
DisplayChangeObserver::~DisplayChangeObserver() {
ui::InputDeviceManager::GetInstance()->RemoveObserver(this);
}
MultipleDisplayState DisplayChangeObserver::GetStateForDisplayIds(
const DisplayConfigurator::DisplayStateList& display_states) {
UpdateInternalDisplay(display_states);
if (display_states.size() == 1)
return MULTIPLE_DISPLAY_STATE_SINGLE;
if (!display_manager_->is_multi_mirroring_enabled() &&
display_states.size() > 2) {
// TODO(weidongg/774795): Remove this condition when multi-mirroring is
// enabled by default.
// When multi-mirroring is disabled, mirroring across 3+ displays are not
// supported, so default to EXTENDED.
return MULTIPLE_DISPLAY_STATE_MULTI_EXTENDED;
}
DisplayIdList list =
GenerateDisplayIdList(display_states.begin(), display_states.end(),
[](const DisplaySnapshot* display_state) {
return display_state->display_id();
});
return display_manager_->ShouldSetMirrorModeOn(list)
? MULTIPLE_DISPLAY_STATE_DUAL_MIRROR
: MULTIPLE_DISPLAY_STATE_MULTI_EXTENDED;
}
bool DisplayChangeObserver::GetResolutionForDisplayId(int64_t display_id,
gfx::Size* size) const {
ManagedDisplayMode mode;
if (!display_manager_->GetSelectedModeForDisplayId(display_id, &mode))
return false;
*size = mode.size();
return true;
}
void DisplayChangeObserver::OnDisplayModeChanged(
const DisplayConfigurator::DisplayStateList& display_states) {
UpdateInternalDisplay(display_states);
std::vector<ManagedDisplayInfo> displays;
for (const DisplaySnapshot* state : display_states) {
const DisplayMode* mode_info = state->current_mode();
if (!mode_info)
continue;
displays.emplace_back(CreateManagedDisplayInfo(state, mode_info));
}
display_manager_->touch_device_manager()->AssociateTouchscreens(
&displays,
ui::InputDeviceManager::GetInstance()->GetTouchscreenDevices());
display_manager_->OnNativeDisplaysChanged(displays);
// For the purposes of user activity detection, ignore synthetic mouse events
// that are triggered by screen resizes: http://crbug.com/360634
ui::UserActivityDetector* user_activity_detector =
ui::UserActivityDetector::Get();
if (user_activity_detector)
user_activity_detector->OnDisplayPowerChanging();
}
void DisplayChangeObserver::OnDisplayModeChangeFailed(
const DisplayConfigurator::DisplayStateList& displays,
MultipleDisplayState failed_new_state) {
// If display configuration failed during startup, simply update the display
// manager with detected displays. If no display is detected, it will
// create a pseudo display.
if (display_manager_->GetNumDisplays() == 0)
OnDisplayModeChanged(displays);
}
void DisplayChangeObserver::OnTouchscreenDeviceConfigurationChanged() {
// If there are no cached display snapshots, either there are no attached
// displays or the cached snapshots have been invalidated. For the first case
// there aren't any touchscreens to associate. For the second case, the
// displays and touch input-devices will get associated when display
// configuration finishes.
const auto& cached_displays = display_configurator_->cached_displays();
if (!cached_displays.empty())
OnDisplayModeChanged(cached_displays);
}
void DisplayChangeObserver::UpdateInternalDisplay(
const DisplayConfigurator::DisplayStateList& display_states) {
bool force_first_display_internal = ForceFirstDisplayInternal();
for (auto* state : display_states) {
if (state->type() == DISPLAY_CONNECTION_TYPE_INTERNAL ||
(force_first_display_internal &&
(!Display::HasInternalDisplay() ||
state->display_id() == Display::InternalDisplayId()))) {
if (Display::HasInternalDisplay())
DCHECK_EQ(Display::InternalDisplayId(), state->display_id());
Display::SetInternalDisplayId(state->display_id());
if (state->native_mode() &&
(!display_manager_->IsDisplayIdValid(state->display_id()) ||
!state->current_mode())) {
// Register the internal display info if
// 1) If it's not already registered. It'll be treated as
// new display in |UpdateDisplaysWith()|.
// 2) If it's not connected, because the display info will not
// be updated in |UpdateDisplaysWith()|, which will skips the
// disconnected displays.
ManagedDisplayInfo new_info =
CreateManagedDisplayInfo(state, state->native_mode());
display_manager_->UpdateInternalDisplay(new_info);
}
return;
}
}
}
ManagedDisplayInfo DisplayChangeObserver::CreateManagedDisplayInfo(
const DisplaySnapshot* snapshot,
const DisplayMode* mode_info) {
float device_scale_factor = 1.0f;
// Sets dpi only if the screen size is not blacklisted.
float dpi = IsDisplaySizeBlackListed(snapshot->physical_size())
? 0
: kInchInMm * mode_info->size().width() /
snapshot->physical_size().width();
constexpr gfx::Size k225DisplaySizeHack(3000, 2000);
if (snapshot->type() == DISPLAY_CONNECTION_TYPE_INTERNAL) {
// TODO(oshima): This is a stopgap hack to deal with b/74845106.
// Remove this hack when it's resolved.
if (mode_info->size() == k225DisplaySizeHack)
device_scale_factor = 2.25f;
else if (dpi)
device_scale_factor = FindDeviceScaleFactor(dpi);
} else {
ManagedDisplayMode mode;
if (display_manager_->GetSelectedModeForDisplayId(snapshot->display_id(),
&mode)) {
device_scale_factor = mode.device_scale_factor();
}
}
std::string name = (snapshot->type() == DISPLAY_CONNECTION_TYPE_INTERNAL)
? l10n_util::GetStringUTF8(IDS_DISPLAY_NAME_INTERNAL)
: snapshot->display_name();
if (name.empty())
name = l10n_util::GetStringUTF8(IDS_DISPLAY_NAME_UNKNOWN);
const bool has_overscan = snapshot->has_overscan();
const int64_t id = snapshot->display_id();
ManagedDisplayInfo new_info = ManagedDisplayInfo(id, name, has_overscan);
if (snapshot->product_code() != DisplaySnapshot::kInvalidProductCode) {
uint16_t manufacturer_id = 0;
uint16_t product_id = 0;
EdidParser::SplitProductCodeInManufacturerIdAndProductId(
snapshot->product_code(), &manufacturer_id, &product_id);
new_info.set_manufacturer_id(
EdidParser::ManufacturerIdToString(manufacturer_id));
new_info.set_product_id(EdidParser::ProductIdToString(product_id));
}
new_info.set_year_of_manufacture(snapshot->year_of_manufacture());
new_info.set_sys_path(snapshot->sys_path());
new_info.set_device_scale_factor(device_scale_factor);
const gfx::Rect display_bounds(snapshot->origin(), mode_info->size());
new_info.SetBounds(display_bounds);
new_info.set_native(true);
new_info.set_is_aspect_preserving_scaling(
snapshot->is_aspect_preserving_scaling());
if (dpi)
new_info.set_device_dpi(dpi);
new_info.set_color_space(snapshot->color_space());
ManagedDisplayInfo::ManagedDisplayModeList display_modes =
(snapshot->type() == DISPLAY_CONNECTION_TYPE_INTERNAL)
? GetInternalManagedDisplayModeList(new_info, *snapshot)
: GetExternalManagedDisplayModeList(*snapshot);
new_info.SetManagedDisplayModes(display_modes);
new_info.set_maximum_cursor_size(snapshot->maximum_cursor_size());
return new_info;
}
// static
float DisplayChangeObserver::FindDeviceScaleFactor(float dpi) {
for (size_t i = 0; i < arraysize(kThresholdTableForInternal); ++i) {
if (dpi > kThresholdTableForInternal[i].dpi)
return kThresholdTableForInternal[i].device_scale_factor;
}
return 1.0f;
}
} // namespace display