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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "ash/common/wm/maximize_mode/maximize_mode_controller.h" | |
| 6 | |
| 7 #include <utility> | |
| 8 | |
| 9 #include "ash/common/ash_switches.h" | |
| 10 #include "ash/common/wm/maximize_mode/maximize_mode_window_manager.h" | |
| 11 #include "ash/common/wm/maximize_mode/scoped_disable_internal_mouse_and_keyboard
.h" | |
| 12 #include "ash/common/wm_shell.h" | |
| 13 #include "base/command_line.h" | |
| 14 #include "base/metrics/histogram_macros.h" | |
| 15 #include "base/time/default_tick_clock.h" | |
| 16 #include "base/time/tick_clock.h" | |
| 17 #include "chromeos/dbus/dbus_thread_manager.h" | |
| 18 #include "ui/base/accelerators/accelerator.h" | |
| 19 #include "ui/chromeos/accelerometer/accelerometer_util.h" | |
| 20 #include "ui/display/display.h" | |
| 21 #include "ui/events/event.h" | |
| 22 #include "ui/events/keycodes/keyboard_codes.h" | |
| 23 #include "ui/gfx/geometry/vector3d_f.h" | |
| 24 | |
| 25 namespace ash { | |
| 26 | |
| 27 namespace { | |
| 28 | |
| 29 // The hinge angle at which to enter maximize mode. | |
| 30 const float kEnterMaximizeModeAngle = 200.0f; | |
| 31 | |
| 32 // The angle at which to exit maximize mode, this is specifically less than the | |
| 33 // angle to enter maximize mode to prevent rapid toggling when near the angle. | |
| 34 const float kExitMaximizeModeAngle = 160.0f; | |
| 35 | |
| 36 // Defines a range for which accelerometer readings are considered accurate. | |
| 37 // When the lid is near open (or near closed) the accelerometer readings may be | |
| 38 // inaccurate and a lid that is fully open may appear to be near closed (and | |
| 39 // vice versa). | |
| 40 const float kMinStableAngle = 20.0f; | |
| 41 const float kMaxStableAngle = 340.0f; | |
| 42 | |
| 43 // The time duration to consider the lid to be recently opened. | |
| 44 // This is used to prevent entering maximize mode if an erroneous accelerometer | |
| 45 // reading makes the lid appear to be fully open when the user is opening the | |
| 46 // lid from a closed position. | |
| 47 const int kLidRecentlyOpenedDurationSeconds = 2; | |
| 48 | |
| 49 // When the device approaches vertical orientation (i.e. portrait orientation) | |
| 50 // the accelerometers for the base and lid approach the same values (i.e. | |
| 51 // gravity pointing in the direction of the hinge). When this happens abrupt | |
| 52 // small acceleration perpendicular to the hinge can lead to incorrect hinge | |
| 53 // angle calculations. To prevent this the accelerometer updates will be | |
| 54 // smoothed over time in order to reduce this noise. | |
| 55 // This is the minimum acceleration parallel to the hinge under which to begin | |
| 56 // smoothing in m/s^2. | |
| 57 const float kHingeVerticalSmoothingStart = 7.0f; | |
| 58 // This is the maximum acceleration parallel to the hinge under which smoothing | |
| 59 // will incorporate new acceleration values, in m/s^2. | |
| 60 const float kHingeVerticalSmoothingMaximum = 8.7f; | |
| 61 | |
| 62 // The maximum deviation between the magnitude of the two accelerometers under | |
| 63 // which to detect hinge angle in m/s^2. These accelerometers are attached to | |
| 64 // the same physical device and so should be under the same acceleration. | |
| 65 const float kNoisyMagnitudeDeviation = 1.0f; | |
| 66 | |
| 67 // The angle between chromeos::AccelerometerReadings are considered stable if | |
| 68 // their magnitudes do not differ greatly. This returns false if the deviation | |
| 69 // between the screen and keyboard accelerometers is too high. | |
| 70 bool IsAngleBetweenAccelerometerReadingsStable( | |
| 71 const chromeos::AccelerometerUpdate& update) { | |
| 72 return std::abs( | |
| 73 ui::ConvertAccelerometerReadingToVector3dF( | |
| 74 update.get(chromeos::ACCELEROMETER_SOURCE_ATTACHED_KEYBOARD)) | |
| 75 .Length() - | |
| 76 ui::ConvertAccelerometerReadingToVector3dF( | |
| 77 update.get(chromeos::ACCELEROMETER_SOURCE_SCREEN)) | |
| 78 .Length()) <= kNoisyMagnitudeDeviation; | |
| 79 } | |
| 80 | |
| 81 bool IsEnabled() { | |
| 82 return base::CommandLine::ForCurrentProcess()->HasSwitch( | |
| 83 switches::kAshEnableTouchView); | |
| 84 } | |
| 85 | |
| 86 } // namespace | |
| 87 | |
| 88 MaximizeModeController::MaximizeModeController() | |
| 89 : have_seen_accelerometer_data_(false), | |
| 90 touchview_usage_interval_start_time_(base::Time::Now()), | |
| 91 tick_clock_(new base::DefaultTickClock()), | |
| 92 tablet_mode_switch_is_on_(false), | |
| 93 lid_is_closed_(false) { | |
| 94 WmShell::Get()->AddShellObserver(this); | |
| 95 WmShell::Get()->RecordUserMetricsAction(UMA_MAXIMIZE_MODE_INITIALLY_DISABLED); | |
| 96 | |
| 97 // TODO(jonross): Do not create MaximizeModeController if the flag is | |
| 98 // unavailable. This will require refactoring | |
| 99 // IsMaximizeModeWindowManagerEnabled to check for the existance of the | |
| 100 // controller. | |
| 101 if (IsEnabled()) { | |
| 102 WmShell::Get()->AddDisplayObserver(this); | |
| 103 chromeos::AccelerometerReader::GetInstance()->AddObserver(this); | |
| 104 } | |
| 105 chromeos::DBusThreadManager::Get()->GetPowerManagerClient()->AddObserver( | |
| 106 this); | |
| 107 } | |
| 108 | |
| 109 MaximizeModeController::~MaximizeModeController() { | |
| 110 WmShell::Get()->RemoveShellObserver(this); | |
| 111 | |
| 112 if (IsEnabled()) { | |
| 113 WmShell::Get()->RemoveDisplayObserver(this); | |
| 114 chromeos::AccelerometerReader::GetInstance()->RemoveObserver(this); | |
| 115 } | |
| 116 chromeos::DBusThreadManager::Get()->GetPowerManagerClient()->RemoveObserver( | |
| 117 this); | |
| 118 } | |
| 119 | |
| 120 bool MaximizeModeController::CanEnterMaximizeMode() { | |
| 121 // If we have ever seen accelerometer data, then HandleHingeRotation may | |
| 122 // trigger maximize mode at some point in the future. | |
| 123 // All TouchView-enabled devices can enter maximized mode. | |
| 124 return have_seen_accelerometer_data_ || IsEnabled(); | |
| 125 } | |
| 126 | |
| 127 // TODO(jcliang): Hide or remove EnableMaximizeModeWindowManager | |
| 128 // (http://crbug.com/620241). | |
| 129 void MaximizeModeController::EnableMaximizeModeWindowManager( | |
| 130 bool should_enable) { | |
| 131 bool is_enabled = !!maximize_mode_window_manager_.get(); | |
| 132 if (should_enable == is_enabled) | |
| 133 return; | |
| 134 | |
| 135 WmShell* shell = WmShell::Get(); | |
| 136 | |
| 137 if (should_enable) { | |
| 138 maximize_mode_window_manager_.reset(new MaximizeModeWindowManager()); | |
| 139 // TODO(jonross): Move the maximize mode notifications from ShellObserver | |
| 140 // to MaximizeModeController::Observer | |
| 141 shell->RecordUserMetricsAction(UMA_MAXIMIZE_MODE_ENABLED); | |
| 142 shell->OnMaximizeModeStarted(); | |
| 143 | |
| 144 observers_.ForAllPtrs([](mojom::TouchViewObserver* observer) { | |
| 145 observer->OnTouchViewToggled(true); | |
| 146 }); | |
| 147 | |
| 148 } else { | |
| 149 shell->OnMaximizeModeEnding(); | |
| 150 maximize_mode_window_manager_.reset(); | |
| 151 shell->RecordUserMetricsAction(UMA_MAXIMIZE_MODE_DISABLED); | |
| 152 shell->OnMaximizeModeEnded(); | |
| 153 | |
| 154 observers_.ForAllPtrs([](mojom::TouchViewObserver* observer) { | |
| 155 observer->OnTouchViewToggled(false); | |
| 156 }); | |
| 157 } | |
| 158 } | |
| 159 | |
| 160 bool MaximizeModeController::IsMaximizeModeWindowManagerEnabled() const { | |
| 161 return maximize_mode_window_manager_.get() != NULL; | |
| 162 } | |
| 163 | |
| 164 void MaximizeModeController::AddWindow(WmWindow* window) { | |
| 165 if (IsMaximizeModeWindowManagerEnabled()) | |
| 166 maximize_mode_window_manager_->AddWindow(window); | |
| 167 } | |
| 168 | |
| 169 void MaximizeModeController::BindRequest( | |
| 170 mojom::TouchViewManagerRequest request) { | |
| 171 bindings_.AddBinding(this, std::move(request)); | |
| 172 } | |
| 173 | |
| 174 void MaximizeModeController::OnAccelerometerUpdated( | |
| 175 scoped_refptr<const chromeos::AccelerometerUpdate> update) { | |
| 176 bool first_accelerometer_update = !have_seen_accelerometer_data_; | |
| 177 have_seen_accelerometer_data_ = true; | |
| 178 | |
| 179 if (!update->has(chromeos::ACCELEROMETER_SOURCE_SCREEN)) | |
| 180 return; | |
| 181 | |
| 182 if (!display::Display::HasInternalDisplay()) | |
| 183 return; | |
| 184 | |
| 185 if (!WmShell::Get()->IsActiveDisplayId( | |
| 186 display::Display::InternalDisplayId())) { | |
| 187 return; | |
| 188 } | |
| 189 | |
| 190 // Whether or not we enter maximize mode affects whether we handle screen | |
| 191 // rotation, so determine whether to enter maximize mode first. | |
| 192 if (!update->has(chromeos::ACCELEROMETER_SOURCE_ATTACHED_KEYBOARD)) { | |
| 193 if (first_accelerometer_update) | |
| 194 EnterMaximizeMode(); | |
| 195 } else if (ui::IsAccelerometerReadingStable( | |
| 196 *update, chromeos::ACCELEROMETER_SOURCE_SCREEN) && | |
| 197 ui::IsAccelerometerReadingStable( | |
| 198 *update, chromeos::ACCELEROMETER_SOURCE_ATTACHED_KEYBOARD) && | |
| 199 IsAngleBetweenAccelerometerReadingsStable(*update)) { | |
| 200 // update.has(chromeos::ACCELEROMETER_SOURCE_ATTACHED_KEYBOARD) | |
| 201 // Ignore the reading if it appears unstable. The reading is considered | |
| 202 // unstable if it deviates too much from gravity and/or the magnitude of the | |
| 203 // reading from the lid differs too much from the reading from the base. | |
| 204 HandleHingeRotation(update); | |
| 205 } | |
| 206 } | |
| 207 | |
| 208 void MaximizeModeController::LidEventReceived(bool open, | |
| 209 const base::TimeTicks& time) { | |
| 210 if (open) | |
| 211 last_lid_open_time_ = time; | |
| 212 lid_is_closed_ = !open; | |
| 213 LeaveMaximizeMode(); | |
| 214 } | |
| 215 | |
| 216 void MaximizeModeController::TabletModeEventReceived( | |
| 217 bool on, | |
| 218 const base::TimeTicks& time) { | |
| 219 tablet_mode_switch_is_on_ = on; | |
| 220 // Do not change if docked. | |
| 221 if (!display::Display::HasInternalDisplay() || | |
| 222 !WmShell::Get()->IsActiveDisplayId( | |
| 223 display::Display::InternalDisplayId())) { | |
| 224 return; | |
| 225 } | |
| 226 if (on && !IsMaximizeModeWindowManagerEnabled()) | |
| 227 EnterMaximizeMode(); | |
| 228 } | |
| 229 | |
| 230 void MaximizeModeController::SuspendImminent() { | |
| 231 // The system is about to suspend, so record TouchView usage interval metrics | |
| 232 // based on whether TouchView mode is currently active. | |
| 233 RecordTouchViewUsageInterval(CurrentTouchViewIntervalType()); | |
| 234 } | |
| 235 | |
| 236 void MaximizeModeController::SuspendDone( | |
| 237 const base::TimeDelta& sleep_duration) { | |
| 238 // We do not want TouchView usage metrics to include time spent in suspend. | |
| 239 touchview_usage_interval_start_time_ = base::Time::Now(); | |
| 240 } | |
| 241 | |
| 242 void MaximizeModeController::HandleHingeRotation( | |
| 243 scoped_refptr<const chromeos::AccelerometerUpdate> update) { | |
| 244 static const gfx::Vector3dF hinge_vector(1.0f, 0.0f, 0.0f); | |
| 245 gfx::Vector3dF base_reading(ui::ConvertAccelerometerReadingToVector3dF( | |
| 246 update->get(chromeos::ACCELEROMETER_SOURCE_ATTACHED_KEYBOARD))); | |
| 247 gfx::Vector3dF lid_reading(ui::ConvertAccelerometerReadingToVector3dF( | |
| 248 update->get(chromeos::ACCELEROMETER_SOURCE_SCREEN))); | |
| 249 | |
| 250 // As the hinge approaches a vertical angle, the base and lid accelerometers | |
| 251 // approach the same values making any angle calculations highly inaccurate. | |
| 252 // Smooth out instantaneous acceleration when nearly vertical to increase | |
| 253 // accuracy. | |
| 254 float largest_hinge_acceleration = | |
| 255 std::max(std::abs(base_reading.x()), std::abs(lid_reading.x())); | |
| 256 float smoothing_ratio = | |
| 257 std::max(0.0f, std::min(1.0f, (largest_hinge_acceleration - | |
| 258 kHingeVerticalSmoothingStart) / | |
| 259 (kHingeVerticalSmoothingMaximum - | |
| 260 kHingeVerticalSmoothingStart))); | |
| 261 | |
| 262 // We cannot trust the computed lid angle when the device is held vertically. | |
| 263 bool is_angle_reliable = | |
| 264 largest_hinge_acceleration <= kHingeVerticalSmoothingMaximum; | |
| 265 | |
| 266 base_smoothed_.Scale(smoothing_ratio); | |
| 267 base_reading.Scale(1.0f - smoothing_ratio); | |
| 268 base_smoothed_.Add(base_reading); | |
| 269 | |
| 270 lid_smoothed_.Scale(smoothing_ratio); | |
| 271 lid_reading.Scale(1.0f - smoothing_ratio); | |
| 272 lid_smoothed_.Add(lid_reading); | |
| 273 | |
| 274 if (tablet_mode_switch_is_on_) | |
| 275 return; | |
| 276 | |
| 277 // Ignore the component of acceleration parallel to the hinge for the purposes | |
| 278 // of hinge angle calculation. | |
| 279 gfx::Vector3dF base_flattened(base_smoothed_); | |
| 280 gfx::Vector3dF lid_flattened(lid_smoothed_); | |
| 281 base_flattened.set_x(0.0f); | |
| 282 lid_flattened.set_x(0.0f); | |
| 283 | |
| 284 // Compute the angle between the base and the lid. | |
| 285 float lid_angle = 180.0f - gfx::ClockwiseAngleBetweenVectorsInDegrees( | |
| 286 base_flattened, lid_flattened, hinge_vector); | |
| 287 if (lid_angle < 0.0f) | |
| 288 lid_angle += 360.0f; | |
| 289 | |
| 290 bool is_angle_stable = is_angle_reliable && lid_angle >= kMinStableAngle && | |
| 291 lid_angle <= kMaxStableAngle; | |
| 292 | |
| 293 // Clear the last_lid_open_time_ for a stable reading so that there is less | |
| 294 // chance of a delay if the lid is moved from the close state to the fully | |
| 295 // open state very quickly. | |
| 296 if (is_angle_stable) | |
| 297 last_lid_open_time_ = base::TimeTicks(); | |
| 298 | |
| 299 // Toggle maximize mode on or off when corresponding thresholds are passed. | |
| 300 if (IsMaximizeModeWindowManagerEnabled() && is_angle_stable && | |
| 301 lid_angle <= kExitMaximizeModeAngle) { | |
| 302 LeaveMaximizeMode(); | |
| 303 } else if (!IsMaximizeModeWindowManagerEnabled() && !lid_is_closed_ && | |
| 304 lid_angle >= kEnterMaximizeModeAngle && | |
| 305 (is_angle_stable || !WasLidOpenedRecently())) { | |
| 306 EnterMaximizeMode(); | |
| 307 } | |
| 308 } | |
| 309 | |
| 310 void MaximizeModeController::EnterMaximizeMode() { | |
| 311 // Always reset first to avoid creation before destruction of a previous | |
| 312 // object. | |
| 313 event_blocker_ = | |
| 314 WmShell::Get()->CreateScopedDisableInternalMouseAndKeyboard(); | |
| 315 | |
| 316 if (IsMaximizeModeWindowManagerEnabled()) | |
| 317 return; | |
| 318 EnableMaximizeModeWindowManager(true); | |
| 319 } | |
| 320 | |
| 321 void MaximizeModeController::LeaveMaximizeMode() { | |
| 322 event_blocker_.reset(); | |
| 323 | |
| 324 if (!IsMaximizeModeWindowManagerEnabled()) | |
| 325 return; | |
| 326 EnableMaximizeModeWindowManager(false); | |
| 327 } | |
| 328 | |
| 329 // Called after maximize mode has started, windows might still animate though. | |
| 330 void MaximizeModeController::OnMaximizeModeStarted() { | |
| 331 RecordTouchViewUsageInterval(TOUCH_VIEW_INTERVAL_INACTIVE); | |
| 332 } | |
| 333 | |
| 334 // Called after maximize mode has ended, windows might still be returning to | |
| 335 // their original position. | |
| 336 void MaximizeModeController::OnMaximizeModeEnded() { | |
| 337 RecordTouchViewUsageInterval(TOUCH_VIEW_INTERVAL_ACTIVE); | |
| 338 } | |
| 339 | |
| 340 void MaximizeModeController::OnDisplayConfigurationChanged() { | |
| 341 if (!display::Display::HasInternalDisplay() || | |
| 342 !WmShell::Get()->IsActiveDisplayId( | |
| 343 display::Display::InternalDisplayId())) { | |
| 344 LeaveMaximizeMode(); | |
| 345 } else if (tablet_mode_switch_is_on_ && | |
| 346 !IsMaximizeModeWindowManagerEnabled()) { | |
| 347 // The internal display has returned, as we are exiting docked mode. | |
| 348 // The device is still in tablet mode, so trigger maximize mode, as this | |
| 349 // switch leads to the ignoring of accelerometer events. When the switch is | |
| 350 // not set the next stable accelerometer readings will trigger maximize | |
| 351 // mode. | |
| 352 EnterMaximizeMode(); | |
| 353 } | |
| 354 } | |
| 355 | |
| 356 void MaximizeModeController::RecordTouchViewUsageInterval( | |
| 357 TouchViewIntervalType type) { | |
| 358 if (!CanEnterMaximizeMode()) | |
| 359 return; | |
| 360 | |
| 361 base::Time current_time = base::Time::Now(); | |
| 362 base::TimeDelta delta = current_time - touchview_usage_interval_start_time_; | |
| 363 switch (type) { | |
| 364 case TOUCH_VIEW_INTERVAL_INACTIVE: | |
| 365 UMA_HISTOGRAM_LONG_TIMES("Ash.TouchView.TouchViewInactive", delta); | |
| 366 total_non_touchview_time_ += delta; | |
| 367 break; | |
| 368 case TOUCH_VIEW_INTERVAL_ACTIVE: | |
| 369 UMA_HISTOGRAM_LONG_TIMES("Ash.TouchView.TouchViewActive", delta); | |
| 370 total_touchview_time_ += delta; | |
| 371 break; | |
| 372 } | |
| 373 | |
| 374 touchview_usage_interval_start_time_ = current_time; | |
| 375 } | |
| 376 | |
| 377 MaximizeModeController::TouchViewIntervalType | |
| 378 MaximizeModeController::CurrentTouchViewIntervalType() { | |
| 379 if (IsMaximizeModeWindowManagerEnabled()) | |
| 380 return TOUCH_VIEW_INTERVAL_ACTIVE; | |
| 381 return TOUCH_VIEW_INTERVAL_INACTIVE; | |
| 382 } | |
| 383 | |
| 384 void MaximizeModeController::AddObserver(mojom::TouchViewObserverPtr observer) { | |
| 385 observer->OnTouchViewToggled(IsMaximizeModeWindowManagerEnabled()); | |
| 386 observers_.AddPtr(std::move(observer)); | |
| 387 } | |
| 388 | |
| 389 void MaximizeModeController::OnAppTerminating() { | |
| 390 // The system is about to shut down, so record TouchView usage interval | |
| 391 // metrics based on whether TouchView mode is currently active. | |
| 392 RecordTouchViewUsageInterval(CurrentTouchViewIntervalType()); | |
| 393 | |
| 394 if (CanEnterMaximizeMode()) { | |
| 395 UMA_HISTOGRAM_CUSTOM_COUNTS("Ash.TouchView.TouchViewActiveTotal", | |
| 396 total_touchview_time_.InMinutes(), 1, | |
| 397 base::TimeDelta::FromDays(7).InMinutes(), 50); | |
| 398 UMA_HISTOGRAM_CUSTOM_COUNTS("Ash.TouchView.TouchViewInactiveTotal", | |
| 399 total_non_touchview_time_.InMinutes(), 1, | |
| 400 base::TimeDelta::FromDays(7).InMinutes(), 50); | |
| 401 base::TimeDelta total_runtime = | |
| 402 total_touchview_time_ + total_non_touchview_time_; | |
| 403 if (total_runtime.InSeconds() > 0) { | |
| 404 UMA_HISTOGRAM_PERCENTAGE( | |
| 405 "Ash.TouchView.TouchViewActivePercentage", | |
| 406 100 * total_touchview_time_.InSeconds() / total_runtime.InSeconds()); | |
| 407 } | |
| 408 } | |
| 409 } | |
| 410 | |
| 411 bool MaximizeModeController::WasLidOpenedRecently() const { | |
| 412 if (last_lid_open_time_.is_null()) | |
| 413 return false; | |
| 414 | |
| 415 base::TimeTicks now = tick_clock_->NowTicks(); | |
| 416 DCHECK(now >= last_lid_open_time_); | |
| 417 base::TimeDelta elapsed_time = now - last_lid_open_time_; | |
| 418 return elapsed_time.InSeconds() <= kLidRecentlyOpenedDurationSeconds; | |
| 419 } | |
| 420 | |
| 421 void MaximizeModeController::SetTickClockForTest( | |
| 422 std::unique_ptr<base::TickClock> tick_clock) { | |
| 423 DCHECK(tick_clock_); | |
| 424 tick_clock_ = std::move(tick_clock); | |
| 425 } | |
| 426 | |
| 427 } // namespace ash | |
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Chromium Code Reviews
Issue 2734653002:
chromeos: Move files in //ash/common to //ash (Closed)
