请问如下代码有“状态值（如-1,0,1,2,3）是在读取和解析XML配置后，根据配置中的属性（如enabled和defaultDisplay）计算得出的”吗？
/*
* Copyright (C) 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.server.display;
import static android.view.Display.DEFAULT_DISPLAY;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.content.Context;
import android.hardware.devicestate.DeviceStateManager;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.os.PowerManager;
import android.os.SystemClock;
import android.os.SystemProperties;
import android.text.TextUtils;
import android.util.ArrayMap;
import android.util.IndentingPrintWriter;
import android.util.Slog;
import android.util.SparseArray;
import android.util.SparseBooleanArray;
import android.util.SparseIntArray;
import android.view.Display;
import android.view.DisplayAddress;
import android.view.DisplayInfo;
import android.view.DisplayAddress;
import com.android.internal.annotations.VisibleForTesting;
import com.android.internal.foldables.FoldGracePeriodProvider;
import com.android.server.LocalServices;
import com.android.server.display.feature.DisplayManagerFlags;
import com.android.server.display.layout.DisplayIdProducer;
import com.android.server.display.layout.Layout;
import com.android.server.display.mode.SyntheticModeManager;
import com.android.server.display.utils.DebugUtils;
import com.android.server.policy.WindowManagerPolicy;
import com.android.server.utils.FoldSettingProvider;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.function.Consumer;
/**
* Responsible for creating {@link LogicalDisplay}s and associating them to the
* {@link DisplayDevice} objects supplied through {@link DisplayAdapter.Listener}.
*
* Additionally this class will keep track of which {@link DisplayGroup} each
* {@link LogicalDisplay} belongs to.
*
* For devices with a single internal display, the mapping is done once and left
* alone. For devices with multiple built-in displays, such as foldable devices,
* {@link LogicalDisplay}s can be remapped to different {@link DisplayDevice}s.
*/
class LogicalDisplayMapper implements DisplayDeviceRepository.Listener {
private static final String TAG = "LogicalDisplayMapper";
// To enable these logs, run:
// 'adb shell setprop persist.log.tag.LogicalDisplayMapper DEBUG && adb reboot'
private static final boolean DEBUG = DebugUtils.isDebuggable(TAG);
public static final int LOGICAL_DISPLAY_EVENT_ADDED = 1;
public static final int LOGICAL_DISPLAY_EVENT_CHANGED = 2;
public static final int LOGICAL_DISPLAY_EVENT_REMOVED = 3;
public static final int LOGICAL_DISPLAY_EVENT_SWAPPED = 4;
public static final int LOGICAL_DISPLAY_EVENT_FRAME_RATE_OVERRIDES_CHANGED = 5;
public static final int LOGICAL_DISPLAY_EVENT_DEVICE_STATE_TRANSITION = 6;
public static final int LOGICAL_DISPLAY_EVENT_HDR_SDR_RATIO_CHANGED = 7;
public static final int LOGICAL_DISPLAY_EVENT_CONNECTED = 8;
public static final int LOGICAL_DISPLAY_EVENT_DISCONNECTED = 9;
public static final int DISPLAY_GROUP_EVENT_ADDED = 1;
public static final int DISPLAY_GROUP_EVENT_CHANGED = 2;
public static final int DISPLAY_GROUP_EVENT_REMOVED = 3;
private static final int TIMEOUT_STATE_TRANSITION_MILLIS = 500;
private static final int MSG_TRANSITION_TO_PENDING_DEVICE_STATE = 1;
private static final int UPDATE_STATE_NEW = 0;
private static final int UPDATE_STATE_TRANSITION = 1;
private static final int UPDATE_STATE_UPDATED = 2;
private static int sNextNonDefaultDisplayId = DEFAULT_DISPLAY + 1;
/**
* Temporary display info, used for comparing display configurations.
*/
private final DisplayInfo mTempDisplayInfo = new DisplayInfo();
private final DisplayInfo mTempNonOverrideDisplayInfo = new DisplayInfo();
/**
* True if the display mapper service should pretend there is only one display
* and only tell applications about the existence of the default logical display.
* The display manager can still mirror content to secondary displays but applications
* cannot present unique content on those displays.
* Used for demonstration purposes only.
*/
private final boolean mSingleDisplayDemoMode;
/**
* True if the device can have more than one internal display on at a time.
*/
private final boolean mSupportsConcurrentInternalDisplays;
/**
* Wake the device when transitioning into these device state.
*/
private final SparseBooleanArray mDeviceStatesOnWhichToWakeUp;
/**
* Sleep the device when transitioning into these device state.
*/
private final SparseBooleanArray mDeviceStatesOnWhichToSelectiveSleep;
/**
* Map of all logical displays indexed by logical display id.
* Any modification to mLogicalDisplays must invalidate the DisplayManagerGlobal cache.
* TODO: multi-display - Move the aforementioned comment?
*/
private final SparseArray<LogicalDisplay> mLogicalDisplays =
new SparseArray<LogicalDisplay>();
private int mNextBuiltInDisplayId = 4096;
// Cache whether or not the display was enabled on the last update.
private final SparseBooleanArray mDisplaysEnabledCache = new SparseBooleanArray();
/** Map of all display groups indexed by display group id. */
private final SparseArray<DisplayGroup> mDisplayGroups = new SparseArray<>();
/**
* Map of display groups which are linked to virtual devices (all displays in the group are
* linked to that device). Keyed by virtual device unique id.
*/
private final SparseIntArray mDeviceDisplayGroupIds = new SparseIntArray();
/**
* Map of display group ids indexed by display group name.
*/
private final ArrayMap<String, Integer> mDisplayGroupIdsByName = new ArrayMap<>();
private final DisplayDeviceRepository mDisplayDeviceRepo;
private final DeviceStateToLayoutMap mDeviceStateToLayoutMap;
private final Listener mListener;
private final DisplayManagerService.SyncRoot mSyncRoot;
private final LogicalDisplayMapperHandler mHandler;
private final FoldSettingProvider mFoldSettingProvider;
private final FoldGracePeriodProvider mFoldGracePeriodProvider;
private final PowerManager mPowerManager;
/**
* Has an entry for every logical display that the rest of the system has been notified about.
* Any entry in here requires us to send a {@link LOGICAL_DISPLAY_EVENT_REMOVED} event when it
* is deleted or {@link LOGICAL_DISPLAY_EVENT_CHANGED} when it is changed. The values are any
* of the {@code UPDATE_STATE_*} constant types.
*/
private final SparseIntArray mUpdatedLogicalDisplays = new SparseIntArray();
/**
* Keeps track of all the display groups that we already told other people about. IOW, if a
* display group is in this array, then we *must* send change and remove notifications for it
* because other components know about them. Also, what this array stores is a change counter
* for each group, so we know if the group itself has changes since we last sent out a
* notification. See {@link DisplayGroup#getChangeCountLocked}.
*/
private final SparseIntArray mUpdatedDisplayGroups = new SparseIntArray();
/**
* Array used in {@link #updateLogicalDisplaysLocked} to track events that need to be sent out.
*/
private final SparseIntArray mLogicalDisplaysToUpdate = new SparseIntArray();
/**
* Array used in {@link #updateLogicalDisplaysLocked} to track events that need to be sent out.
*/
private final SparseIntArray mDisplayGroupsToUpdate = new SparseIntArray();
/**
* ArrayMap of display device unique ID to virtual device ID. Used in {@link
* #updateLogicalDisplaysLocked} to establish which Virtual Devices own which Virtual Displays.
*/
private final ArrayMap<String, Integer> mVirtualDeviceDisplayMapping = new ArrayMap<>();
private WindowManagerPolicy mWindowManagerPolicy;
private int mNextNonDefaultGroupId = Display.DEFAULT_DISPLAY_GROUP + 1;
private final DisplayIdProducer mIdProducer = (isDefault) ->
isDefault ? DEFAULT_DISPLAY : sNextNonDefaultDisplayId++;
private Layout mCurrentLayout = null;
private int mDeviceState = DeviceStateManager.INVALID_DEVICE_STATE_IDENTIFIER;
private int mPendingDeviceState = DeviceStateManager.INVALID_DEVICE_STATE_IDENTIFIER;
private int mDeviceStateToBeAppliedAfterBoot =
DeviceStateManager.INVALID_DEVICE_STATE_IDENTIFIER;
private boolean mBootCompleted = false;
private boolean mInteractive;
private final DisplayManagerFlags mFlags;
private final SyntheticModeManager mSyntheticModeManager;
LogicalDisplayMapper(@NonNull Context context, FoldSettingProvider foldSettingProvider,
FoldGracePeriodProvider foldGracePeriodProvider,
@NonNull DisplayDeviceRepository repo,
@NonNull Listener listener, @NonNull DisplayManagerService.SyncRoot syncRoot,
@NonNull Handler handler, DisplayManagerFlags flags) {
this(context, foldSettingProvider, foldGracePeriodProvider, repo, listener, syncRoot,
handler,
new DeviceStateToLayoutMap((isDefault) -> isDefault ? DEFAULT_DISPLAY
: sNextNonDefaultDisplayId++, flags), flags,
new SyntheticModeManager(flags));
}
LogicalDisplayMapper(@NonNull Context context, FoldSettingProvider foldSettingProvider,
FoldGracePeriodProvider foldGracePeriodProvider,
@NonNull DisplayDeviceRepository repo,
@NonNull Listener listener, @NonNull DisplayManagerService.SyncRoot syncRoot,
@NonNull Handler handler, @NonNull DeviceStateToLayoutMap deviceStateToLayoutMap,
DisplayManagerFlags flags, SyntheticModeManager syntheticModeManager) {
mSyncRoot = syncRoot;
mPowerManager = context.getSystemService(PowerManager.class);
mInteractive = mPowerManager.isInteractive();
mHandler = new LogicalDisplayMapperHandler(handler.getLooper());
mDisplayDeviceRepo = repo;
mListener = listener;
mFoldSettingProvider = foldSettingProvider;
mFoldGracePeriodProvider = foldGracePeriodProvider;
mSingleDisplayDemoMode = SystemProperties.getBoolean("persist.demo.singledisplay", false);
mSupportsConcurrentInternalDisplays = context.getResources().getBoolean(
com.android.internal.R.bool.config_supportsConcurrentInternalDisplays);
mDeviceStatesOnWhichToWakeUp = toSparseBooleanArray(context.getResources().getIntArray(
com.android.internal.R.array.config_deviceStatesOnWhichToWakeUp));
mDeviceStatesOnWhichToSelectiveSleep = toSparseBooleanArray(
context.getResources().getIntArray(
com.android.internal.R.array.config_deviceStatesOnWhichToSleep));
mDisplayDeviceRepo.addListener(this);
mDeviceStateToLayoutMap = deviceStateToLayoutMap;
mFlags = flags;
mSyntheticModeManager = syntheticModeManager;
}
@Override
public void onDisplayDeviceEventLocked(DisplayDevice device, int event) {
switch (event) {
case DisplayDeviceRepository.DISPLAY_DEVICE_EVENT_ADDED:
if (DEBUG) {
Slog.d(TAG, "Display device added: " + device.getDisplayDeviceInfoLocked());
}
handleDisplayDeviceAddedLocked(device);
break;
case DisplayDeviceRepository.DISPLAY_DEVICE_EVENT_REMOVED:
if (DEBUG) {
Slog.d(TAG, "Display device removed: " + device.getDisplayDeviceInfoLocked());
}
handleDisplayDeviceRemovedLocked(device);
updateLogicalDisplaysLocked();
break;
}
}
@Override
public void onDisplayDeviceChangedLocked(DisplayDevice device, int diff) {
if (DEBUG) {
Slog.d(TAG, "Display device changed: " + device.getDisplayDeviceInfoLocked());
}
finishStateTransitionLocked(false /*force*/);
updateLogicalDisplaysLocked(diff);
}
@Override
public void onTraversalRequested() {
mListener.onTraversalRequested();
}
public void onWindowManagerReady() {
mWindowManagerPolicy = LocalServices.getService(WindowManagerPolicy.class);
}
public LogicalDisplay getDisplayLocked(int displayId) {
return getDisplayLocked(displayId, /* includeDisabled= */ true);
}
public LogicalDisplay getDisplayLocked(int displayId, boolean includeDisabled) {
LogicalDisplay display = mLogicalDisplays.get(displayId);
if (display == null || display.isEnabledLocked() || includeDisabled) {
return display;
}
return null;
}
public LogicalDisplay getDisplayLocked(DisplayDevice device) {
return getDisplayLocked(device, /* includeDisabled= */ true);
}
public LogicalDisplay getDisplayLocked(DisplayDevice device, boolean includeDisabled) {
if (device == null) {
return null;
}
final int count = mLogicalDisplays.size();
for (int i = 0; i < count; i++) {
final LogicalDisplay display = mLogicalDisplays.valueAt(i);
if (display.getPrimaryDisplayDeviceLocked() == device) {
if (display.isEnabledLocked() || includeDisabled) {
return display;
}
return null;
}
}
return null;
}
public int[] getDisplayIdsLocked(int callingUid, boolean includeDisabled) {
final int count = mLogicalDisplays.size();
int[] displayIds = new int[count];
int n = 0;
for (int i = 0; i < count; i++) {
LogicalDisplay display = mLogicalDisplays.valueAt(i);
if (display.isEnabledLocked() || includeDisabled) {
DisplayInfo info = display.getDisplayInfoLocked();
if (info.hasAccess(callingUid)) {
displayIds[n++] = mLogicalDisplays.keyAt(i);
}
}
}
if (n != count) {
displayIds = Arrays.copyOfRange(displayIds, 0, n);
}
return displayIds;
}
public void forEachLocked(Consumer<LogicalDisplay> consumer) {
forEachLocked(consumer, /* includeDisabled= */ true);
}
public void forEachLocked(Consumer<LogicalDisplay> consumer, boolean includeDisabled) {
final int count = mLogicalDisplays.size();
for (int i = 0; i < count; i++) {
LogicalDisplay display = mLogicalDisplays.valueAt(i);
if (display.isEnabledLocked() || includeDisabled) {
consumer.accept(display);
}
}
}
@VisibleForTesting
public int getDisplayGroupIdFromDisplayIdLocked(int displayId) {
final LogicalDisplay display = getDisplayLocked(displayId);
if (display == null) {
return Display.INVALID_DISPLAY_GROUP;
}
final int size = mDisplayGroups.size();
for (int i = 0; i < size; i++) {
final DisplayGroup displayGroup = mDisplayGroups.valueAt(i);
if (displayGroup.containsLocked(display)) {
return mDisplayGroups.keyAt(i);
}
}
return Display.INVALID_DISPLAY_GROUP;
}
public DisplayGroup getDisplayGroupLocked(int groupId) {
return mDisplayGroups.get(groupId);
}
/**
* Returns the {@link DisplayInfo} for this device state, indicated by the given display id. The
* DisplayInfo represents the attributes of the indicated display in the layout associated with
* this state. This is used to get display information for various displays in various states;
* e.g. to help apps preload resources for the possible display states.
*
* @param deviceState the state to query possible layouts for
* @param displayId the display id to retrieve
* @return {@code null} if no corresponding {@link DisplayInfo} could be found, or the
* {@link DisplayInfo} with a matching display id.
*/
@Nullable
public DisplayInfo getDisplayInfoForStateLocked(int deviceState, int displayId) {
// Retrieve the layout for this particular state.
final Layout layout = mDeviceStateToLayoutMap.get(deviceState);
if (layout == null) {
// TODO(b/352019542): remove the log once b/345960547 is fixed.
Slog.d(TAG, "Cannot get layout for given state:" + deviceState);
return null;
}
// Retrieve the details of the given display within this layout.
Layout.Display display = layout.getById(displayId);
if (display == null) {
// TODO(b/352019542): remove the log once b/345960547 is fixed.
Slog.d(TAG, "Cannot get display for given layout:" + layout);
return null;
}
// Retrieve the display info for the display that matches the display id.
final DisplayDevice device = mDisplayDeviceRepo.getByAddressLocked(display.getAddress());
if (device == null) {
Slog.w(TAG, "The display device (" + display.getAddress() + "), is not available"
+ " for the display state " + mDeviceState);
return null;
}
LogicalDisplay logicalDisplay = getDisplayLocked(device, /* includeDisabled= */ true);
if (logicalDisplay == null) {
Slog.w(TAG, "The logical display associated with address (" + display.getAddress()
+ "), is not available for the display state " + mDeviceState);
return null;
}
DisplayInfo displayInfo = new DisplayInfo(logicalDisplay.getDisplayInfoLocked());
displayInfo.displayId = displayId;
return displayInfo;
}
public void dumpLocked(PrintWriter pw) {
pw.println("LogicalDisplayMapper:");
IndentingPrintWriter ipw = new IndentingPrintWriter(pw, " ");
ipw.increaseIndent();
ipw.println("mSingleDisplayDemoMode=" + mSingleDisplayDemoMode);
ipw.println("mCurrentLayout=" + mCurrentLayout);
ipw.println("mDeviceStatesOnWhichToWakeUp=" + mDeviceStatesOnWhichToWakeUp);
ipw.println("mDeviceStatesOnWhichSelectiveSleep=" + mDeviceStatesOnWhichToSelectiveSleep);
ipw.println("mInteractive=" + mInteractive);
ipw.println("mBootCompleted=" + mBootCompleted);
ipw.println();
ipw.println("mDeviceState=" + mDeviceState);
ipw.println("mPendingDeviceState=" + mPendingDeviceState);
ipw.println("mDeviceStateToBeAppliedAfterBoot=" + mDeviceStateToBeAppliedAfterBoot);
final int logicalDisplayCount = mLogicalDisplays.size();
ipw.println();
ipw.println("Logical Displays: size=" + logicalDisplayCount);
for (int i = 0; i < logicalDisplayCount; i++) {
int displayId = mLogicalDisplays.keyAt(i);
LogicalDisplay display = mLogicalDisplays.valueAt(i);
ipw.println("Display " + displayId + ":");
ipw.increaseIndent();
display.dumpLocked(ipw);
ipw.decreaseIndent();
ipw.println();
}
mDeviceStateToLayoutMap.dumpLocked(ipw);
}
/**
* Creates an association between a displayDevice and a virtual device. Any displays associated
* with this virtual device will be grouped together in a single {@link DisplayGroup} unless
* created with {@link Display.FLAG_OWN_DISPLAY_GROUP}.
*
* @param displayDevice the displayDevice to be linked
* @param virtualDeviceUniqueId the unique ID of the virtual device.
*/
void associateDisplayDeviceWithVirtualDevice(
DisplayDevice displayDevice, int virtualDeviceUniqueId) {
mVirtualDeviceDisplayMapping.put(displayDevice.getUniqueId(), virtualDeviceUniqueId);
}
void setDeviceStateLocked(int state) {
if (!mBootCompleted) {
// The boot animation might still be in progress, we do not want to switch states now
// as the boot animation would end up with an incorrect size.
if (DEBUG) {
Slog.d(TAG, "Postponing transition to state: " + mPendingDeviceState
+ " until boot is completed");
}
mDeviceStateToBeAppliedAfterBoot = state;
return;
}
Slog.i(TAG, "Requesting Transition to state: " + state + ", from state=" + mDeviceState
+ ", interactive=" + mInteractive + ", mBootCompleted=" + mBootCompleted);
// As part of a state transition, we may need to turn off some displays temporarily so that
// the transition is smooth. Plus, on some devices, only one internal displays can be
// on at a time. We use LogicalDisplay.setIsInTransition to mark a display that needs to be
// temporarily turned off.
resetLayoutLocked(mDeviceState, state, /* transitionValue= */ true);
mPendingDeviceState = state;
mDeviceStateToBeAppliedAfterBoot = DeviceStateManager.INVALID_DEVICE_STATE_IDENTIFIER;
final boolean wakeDevice = shouldDeviceBeWoken(mPendingDeviceState, mDeviceState,
mInteractive, mBootCompleted);
final boolean sleepDevice = shouldDeviceBePutToSleep(mPendingDeviceState, mDeviceState,
mInteractive, mBootCompleted);
// If all displays are off already, we can just transition here, unless we are trying to
// wake or sleep the device as part of this transition. In that case defer the final
// transition until later once the device is awake/asleep.
if (areAllTransitioningDisplaysOffLocked() && !wakeDevice && !sleepDevice) {
transitionToPendingStateLocked();
return;
}
if (DEBUG) {
Slog.d(TAG, "Postponing transition to state: " + mPendingDeviceState);
}
// Send the transitioning phase updates to DisplayManager so that the displays can
// start turning OFF in preparation for the new layout.
updateLogicalDisplaysLocked();
if (wakeDevice || sleepDevice) {
if (wakeDevice) {
// We already told the displays to turn off, now we need to wake the device as
// we transition to this new state. We do it here so that the waking happens
// between the transition from one layout to another.
mHandler.post(() -> {
mPowerManager.wakeUp(SystemClock.uptimeMillis(),
PowerManager.WAKE_REASON_UNFOLD_DEVICE, "server.display:unfold");
});
} else if (sleepDevice) {
// Send the device to sleep when required.
int goToSleepFlag =
mFoldSettingProvider.shouldSleepOnFold() ? 0
: PowerManager.GO_TO_SLEEP_FLAG_SOFT_SLEEP;
mHandler.post(() -> {
mPowerManager.goToSleep(SystemClock.uptimeMillis(),
PowerManager.GO_TO_SLEEP_REASON_DEVICE_FOLD,
goToSleepFlag);
});
}
}
mHandler.sendEmptyMessageDelayed(MSG_TRANSITION_TO_PENDING_DEVICE_STATE,
TIMEOUT_STATE_TRANSITION_MILLIS);
}
void onBootCompleted() {
synchronized (mSyncRoot) {
mBootCompleted = true;
if (mDeviceStateToBeAppliedAfterBoot
!= DeviceStateManager.INVALID_DEVICE_STATE_IDENTIFIER) {
setDeviceStateLocked(mDeviceStateToBeAppliedAfterBoot);
}
}
}
void onEarlyInteractivityChange(boolean interactive) {
synchronized (mSyncRoot) {
if (mInteractive != interactive) {
mInteractive = interactive;
finishStateTransitionLocked(false /*force*/);
}
}
}
/**
* Returns if the device should be woken up or not. Called to check if the device state we are
* moving to is one that should awake the device, as well as if we are moving from a device
* state that shouldn't have been already woken from.
*
* @param pendingState device state we are moving to
* @param currentState device state we are currently in
* @param isInteractive if the device is in an interactive state
* @param isBootCompleted is the device fully booted
*
* @see #shouldDeviceBePutToSleep
* @see #setDeviceStateLocked
*/
@VisibleForTesting
boolean shouldDeviceBeWoken(int pendingState, int currentState, boolean isInteractive,
boolean isBootCompleted) {
return mDeviceStatesOnWhichToWakeUp.get(pendingState)
&& !mDeviceStatesOnWhichToWakeUp.get(currentState)
&& !isInteractive && isBootCompleted;
}
/**
* Returns if the device should be put to sleep or not.
*
* Includes a check to verify that the device state that we are moving to, {@code pendingState},
* is the same as the physical state of the device, {@code baseState}. Also if the
* 'Stay Awake On Fold' is not enabled. Different values for these parameters indicate a device
* state override is active, and we shouldn't put the device to sleep to provide a better user
* experience.
*
* @param pendingState device state we are moving to
* @param currentState device state we are currently in
* @param isInteractive if the device is in an interactive state
* @param isBootCompleted is the device fully booted
*
* @see #shouldDeviceBeWoken
* @see #setDeviceStateLocked
*/
@VisibleForTesting
boolean shouldDeviceBePutToSleep(int pendingState, int currentState, boolean isInteractive,
boolean isBootCompleted) {
return currentState != DeviceStateManager.INVALID_DEVICE_STATE_IDENTIFIER
&& mDeviceStatesOnWhichToSelectiveSleep.get(pendingState)
&& !mDeviceStatesOnWhichToSelectiveSleep.get(currentState)
&& isInteractive
&& isBootCompleted
&& !mFoldSettingProvider.shouldStayAwakeOnFold();
}
private boolean areAllTransitioningDisplaysOffLocked() {
final int count = mLogicalDisplays.size();
for (int i = 0; i < count; i++) {
final LogicalDisplay display = mLogicalDisplays.valueAt(i);
if (!display.isInTransitionLocked()) {
continue;
}
final DisplayDevice device = display.getPrimaryDisplayDeviceLocked();
if (device != null) {
final DisplayDeviceInfo info = device.getDisplayDeviceInfoLocked();
if (info.state != Display.STATE_OFF) {
return false;
}
}
}
return true;
}
private void transitionToPendingStateLocked() {
resetLayoutLocked(mDeviceState, mPendingDeviceState, /* transitionValue= */ false);
mDeviceState = mPendingDeviceState;
mPendingDeviceState = DeviceStateManager.INVALID_DEVICE_STATE_IDENTIFIER;
applyLayoutLocked();
updateLogicalDisplaysLocked();
}
private void finishStateTransitionLocked(boolean force) {
if (mPendingDeviceState == DeviceStateManager.INVALID_DEVICE_STATE_IDENTIFIER) {
return;
}
final boolean waitingToWakeDevice = mDeviceStatesOnWhichToWakeUp.get(mPendingDeviceState)
&& !mDeviceStatesOnWhichToWakeUp.get(mDeviceState)
&& !mInteractive && mBootCompleted;
// The device should only wait for sleep if #shouldStayAwakeOnFold method returns false.
// If not, device should be marked ready for transition immediately.
final boolean waitingToSleepDevice = mDeviceStatesOnWhichToSelectiveSleep.get(
mPendingDeviceState)
&& !mDeviceStatesOnWhichToSelectiveSleep.get(mDeviceState)
&& mInteractive && mBootCompleted && !shouldStayAwakeOnFold();
final boolean displaysOff = areAllTransitioningDisplaysOffLocked();
final boolean isReadyToTransition = displaysOff && !waitingToWakeDevice
&& !waitingToSleepDevice;
if (isReadyToTransition || force) {
transitionToPendingStateLocked();
mHandler.removeMessages(MSG_TRANSITION_TO_PENDING_DEVICE_STATE);
} else if (DEBUG) {
Slog.d(TAG, "Not yet ready to transition to state=" + mPendingDeviceState
+ " with displays-off=" + displaysOff + ", force=" + force
+ ", mInteractive=" + mInteractive + ", isReady=" + isReadyToTransition);
}
}
private void handleDisplayDeviceAddedLocked(DisplayDevice device) {
DisplayDeviceInfo deviceInfo = device.getDisplayDeviceInfoLocked();
// The default Display needs to have additional initialization.
// This initializes a default dynamic display layout for the default
// device, which is used as a fallback in case no static layout definitions
// exist or cannot be loaded.
if ((deviceInfo.flags & DisplayDeviceInfo.FLAG_ALLOWED_TO_BE_DEFAULT_DISPLAY) != 0) {
initializeDefaultDisplayDeviceLocked(device);
}
// Create a logical display for the new display device
LogicalDisplay display = createNewLogicalDisplayLocked(
device, mIdProducer.getId(/* isDefault= */ false));
applyLayoutLocked();
updateLogicalDisplaysLocked();
}
private void handleDisplayDeviceRemovedLocked(DisplayDevice device) {
final Layout layout = mDeviceStateToLayoutMap.get(DeviceStateToLayoutMap.STATE_DEFAULT);
Layout.Display layoutDisplay = layout.getById(DEFAULT_DISPLAY);
if (layoutDisplay == null) {
return;
}
DisplayDeviceInfo deviceInfo = device.getDisplayDeviceInfoLocked();
// Remove any virtual device mapping which exists for the display.
mVirtualDeviceDisplayMapping.remove(device.getUniqueId());
if (layoutDisplay.getAddress().equals(deviceInfo.address)) {
layout.removeDisplayLocked(DEFAULT_DISPLAY);
// Need to find another local display and make it default
for (int i = 0; i < mLogicalDisplays.size(); i++) {
LogicalDisplay nextDisplay = mLogicalDisplays.valueAt(i);
DisplayDevice nextDevice = nextDisplay.getPrimaryDisplayDeviceLocked();
if (nextDevice == null) {
continue;
}
DisplayDeviceInfo nextDeviceInfo = nextDevice.getDisplayDeviceInfoLocked();
if ((nextDeviceInfo.flags
& DisplayDeviceInfo.FLAG_ALLOWED_TO_BE_DEFAULT_DISPLAY) != 0
&& !nextDeviceInfo.address.equals(deviceInfo.address)) {
layout.createDefaultDisplayLocked(nextDeviceInfo.address, mIdProducer);
applyLayoutLocked();
return;
}
}
}
}
@VisibleForTesting
void updateLogicalDisplays() {
synchronized (mSyncRoot) {
updateLogicalDisplaysLocked();
}
}
void updateLogicalDisplaysLocked() {
updateLogicalDisplaysLocked(DisplayDeviceInfo.DIFF_EVERYTHING);
}
private void updateLogicalDisplaysLocked(int diff) {
updateLogicalDisplaysLocked(diff, /* isSecondLoop= */ false);
}
/**
* Updates the rest of the display system once all the changes are applied for display
* devices and logical displays. The includes releasing invalid/empty LogicalDisplays,
* creating/adjusting/removing DisplayGroups, and notifying the rest of the system of the
* relevant changes.
*
* @param diff The DisplayDeviceInfo.DIFF_* of what actually changed to enable finer-grained
* display update listeners
* @param isSecondLoop If true, this is the second time this is called for the same change.
*/
private void updateLogicalDisplaysLocked(int diff, boolean isSecondLoop) {
boolean reloop = false;
// Go through all the displays and figure out if they need to be updated.
// Loops in reverse so that displays can be removed during the loop without affecting the
// rest of the loop.
for (int i = mLogicalDisplays.size() - 1; i >= 0; i--) {
final int displayId = mLogicalDisplays.keyAt(i);
LogicalDisplay display = mLogicalDisplays.valueAt(i);
assignDisplayGroupLocked(display);
boolean wasDirty = display.isDirtyLocked();
mTempDisplayInfo.copyFrom(display.getDisplayInfoLocked());
display.getNonOverrideDisplayInfoLocked(mTempNonOverrideDisplayInfo);
display.updateLocked(mDisplayDeviceRepo, mSyntheticModeManager);
final DisplayInfo newDisplayInfo = display.getDisplayInfoLocked();
final int updateState = mUpdatedLogicalDisplays.get(displayId, UPDATE_STATE_NEW);
final boolean wasPreviouslyUpdated = updateState != UPDATE_STATE_NEW;
final boolean wasPreviouslyEnabled = mDisplaysEnabledCache.get(displayId);
final boolean isCurrentlyEnabled = display.isEnabledLocked();
// The display is no longer valid and needs to be removed.
if (!display.isValidLocked()) {
// Remove from group
final DisplayGroup displayGroup = getDisplayGroupLocked(
getDisplayGroupIdFromDisplayIdLocked(displayId));
if (displayGroup != null) {
displayGroup.removeDisplayLocked(display);
}
if (wasPreviouslyUpdated) {
// The display isn't actually removed from our internal data structures until
// after the notification is sent; see {@link #sendUpdatesForDisplaysLocked}.
if (mFlags.isConnectedDisplayManagementEnabled()) {
if (mDisplaysEnabledCache.get(displayId)) {
// We still need to send LOGICAL_DISPLAY_EVENT_DISCONNECTED
reloop = true;
mLogicalDisplaysToUpdate.put(displayId, LOGICAL_DISPLAY_EVENT_REMOVED);
} else {
mUpdatedLogicalDisplays.delete(displayId);
mLogicalDisplaysToUpdate.put(displayId,
LOGICAL_DISPLAY_EVENT_DISCONNECTED);
}
} else {
mUpdatedLogicalDisplays.delete(displayId);
mLogicalDisplaysToUpdate.put(displayId, LOGICAL_DISPLAY_EVENT_REMOVED);
}
} else {
// This display never left this class, safe to remove without notification
mLogicalDisplays.removeAt(i);
}
continue;
// The display is new.
} else if (!wasPreviouslyUpdated) {
if (mFlags.isConnectedDisplayManagementEnabled()) {
// We still need to send LOGICAL_DISPLAY_EVENT_ADDED
reloop = true;
mLogicalDisplaysToUpdate.put(displayId, LOGICAL_DISPLAY_EVENT_CONNECTED);
} else {
mLogicalDisplaysToUpdate.put(displayId, LOGICAL_DISPLAY_EVENT_ADDED);
}
// Underlying displays device has changed to a different one.
} else if (!TextUtils.equals(mTempDisplayInfo.uniqueId, newDisplayInfo.uniqueId)) {
mLogicalDisplaysToUpdate.put(displayId, LOGICAL_DISPLAY_EVENT_SWAPPED);
// Something about the display device has changed.
} else if (mFlags.isConnectedDisplayManagementEnabled()
&& wasPreviouslyEnabled != isCurrentlyEnabled) {
int event = isCurrentlyEnabled ? LOGICAL_DISPLAY_EVENT_ADDED :
LOGICAL_DISPLAY_EVENT_REMOVED;
mLogicalDisplaysToUpdate.put(displayId, event);
} else if (wasDirty || !mTempDisplayInfo.equals(newDisplayInfo)) {
// If only the hdr/sdr ratio changed, then send just the event for that case
if ((diff == DisplayDeviceInfo.DIFF_HDR_SDR_RATIO)) {
mLogicalDisplaysToUpdate.put(displayId,
LOGICAL_DISPLAY_EVENT_HDR_SDR_RATIO_CHANGED);
} else {
mLogicalDisplaysToUpdate.put(displayId, LOGICAL_DISPLAY_EVENT_CHANGED);
}
// The display is involved in a display layout transition
} else if (updateState == UPDATE_STATE_TRANSITION) {
mLogicalDisplaysToUpdate.put(displayId,
LOGICAL_DISPLAY_EVENT_DEVICE_STATE_TRANSITION);
// Display frame rate overrides changed.
} else if (!display.getPendingFrameRateOverrideUids().isEmpty()) {
mLogicalDisplaysToUpdate.put(
displayId, LOGICAL_DISPLAY_EVENT_FRAME_RATE_OVERRIDES_CHANGED);
// Non-override display values changed.
} else {
// While application shouldn't know nor care about the non-overridden info, we
// still need to let WindowManager know so it can update its own internal state for
// things like display cutouts.
display.getNonOverrideDisplayInfoLocked(mTempDisplayInfo);
if (!mTempNonOverrideDisplayInfo.equals(mTempDisplayInfo)) {
mLogicalDisplaysToUpdate.put(displayId, LOGICAL_DISPLAY_EVENT_CHANGED);
}
}
mUpdatedLogicalDisplays.put(displayId, UPDATE_STATE_UPDATED);
}
// Go through the groups and do the same thing. We do this after displays since group
// information can change in the previous loop.
// Loops in reverse so that groups can be removed during the loop without affecting the
// rest of the loop.
for (int i = mDisplayGroups.size() - 1; i >= 0; i--) {
final int groupId = mDisplayGroups.keyAt(i);
final DisplayGroup group = mDisplayGroups.valueAt(i);
final boolean wasPreviouslyUpdated = mUpdatedDisplayGroups.indexOfKey(groupId) > -1;
final int changeCount = group.getChangeCountLocked();
if (group.isEmptyLocked()) {
mUpdatedDisplayGroups.delete(groupId);
if (wasPreviouslyUpdated) {
mDisplayGroupsToUpdate.put(groupId, DISPLAY_GROUP_EVENT_REMOVED);
}
continue;
} else if (!wasPreviouslyUpdated) {
mDisplayGroupsToUpdate.put(groupId, DISPLAY_GROUP_EVENT_ADDED);
} else if (mUpdatedDisplayGroups.get(groupId) != changeCount) {
mDisplayGroupsToUpdate.put(groupId, DISPLAY_GROUP_EVENT_CHANGED);
}
mUpdatedDisplayGroups.put(groupId, changeCount);
}
// Send the display and display group updates in order by message type. This is important
// to ensure that addition and removal notifications happen in the right order.
sendUpdatesForDisplaysLocked(LOGICAL_DISPLAY_EVENT_DEVICE_STATE_TRANSITION);
sendUpdatesForGroupsLocked(DISPLAY_GROUP_EVENT_ADDED);
sendUpdatesForDisplaysLocked(LOGICAL_DISPLAY_EVENT_REMOVED);
if (mFlags.isConnectedDisplayManagementEnabled()) {
sendUpdatesForDisplaysLocked(LOGICAL_DISPLAY_EVENT_DISCONNECTED);
}
sendUpdatesForDisplaysLocked(LOGICAL_DISPLAY_EVENT_CHANGED);
sendUpdatesForDisplaysLocked(LOGICAL_DISPLAY_EVENT_FRAME_RATE_OVERRIDES_CHANGED);
sendUpdatesForDisplaysLocked(LOGICAL_DISPLAY_EVENT_SWAPPED);
if (mFlags.isConnectedDisplayManagementEnabled()) {
sendUpdatesForDisplaysLocked(LOGICAL_DISPLAY_EVENT_CONNECTED);
}
sendUpdatesForDisplaysLocked(LOGICAL_DISPLAY_EVENT_ADDED);
sendUpdatesForDisplaysLocked(LOGICAL_DISPLAY_EVENT_HDR_SDR_RATIO_CHANGED);
sendUpdatesForGroupsLocked(DISPLAY_GROUP_EVENT_CHANGED);
sendUpdatesForGroupsLocked(DISPLAY_GROUP_EVENT_REMOVED);
mLogicalDisplaysToUpdate.clear();
mDisplayGroupsToUpdate.clear();
if (reloop) {
if (isSecondLoop) {
Slog.wtf(TAG, "Trying to loop a third time");
return;
}
updateLogicalDisplaysLocked(diff, /* isSecondLoop= */ true);
}
}
/**
* Send the specified message for all relevant displays in the specified display-to-message map.
*/
private void sendUpdatesForDisplaysLocked(int msg) {
for (int i = mLogicalDisplaysToUpdate.size() - 1; i >= 0; --i) {
final int currMsg = mLogicalDisplaysToUpdate.valueAt(i);
if (currMsg != msg) {
continue;
}
final int id = mLogicalDisplaysToUpdate.keyAt(i);
final LogicalDisplay display = getDisplayLocked(id);
if (DEBUG) {
final DisplayDevice device = display.getPrimaryDisplayDeviceLocked();
final String uniqueId = device == null ? "null" : device.getUniqueId();
Slog.d(TAG, "Sending " + displayEventToString(msg) + " for display=" + id
+ " with device=" + uniqueId);
}
if (mFlags.isConnectedDisplayManagementEnabled()) {
if (msg == LOGICAL_DISPLAY_EVENT_ADDED) {
mDisplaysEnabledCache.put(id, true);
} else if (msg == LOGICAL_DISPLAY_EVENT_REMOVED) {
mDisplaysEnabledCache.delete(id);
}
}
mListener.onLogicalDisplayEventLocked(display, msg);
if (mFlags.isConnectedDisplayManagementEnabled()) {
if (msg == LOGICAL_DISPLAY_EVENT_DISCONNECTED) {
mLogicalDisplays.delete(id);
}
} else if (msg == LOGICAL_DISPLAY_EVENT_REMOVED) {
// We wait until we sent the EVENT_REMOVED event before actually removing the
// display.
mLogicalDisplays.delete(id);
}
}
}
/**
* Send the specified message for all relevant display groups in the specified message map.
*/
private void sendUpdatesForGroupsLocked(int msg) {
for (int i = mDisplayGroupsToUpdate.size() - 1; i >= 0; --i) {
final int currMsg = mDisplayGroupsToUpdate.valueAt(i);
if (currMsg != msg) {
continue;
}
final int id = mDisplayGroupsToUpdate.keyAt(i);
mListener.onDisplayGroupEventLocked(id, msg);
if (msg == DISPLAY_GROUP_EVENT_REMOVED) {
// We wait until we sent the EVENT_REMOVED event before actually removing the
// group.
mDisplayGroups.delete(id);
// Remove possible reference to the removed group.
int deviceIndex = mDeviceDisplayGroupIds.indexOfValue(id);
if (deviceIndex >= 0) {
mDeviceDisplayGroupIds.removeAt(deviceIndex);
}
}
}
}
/** This method should be called before LogicalDisplay.updateLocked,
* DisplayInfo in LogicalDisplay (display.getDisplayInfoLocked()) is not updated yet,
* and should not be used directly or indirectly in this method */
private void assignDisplayGroupLocked(LogicalDisplay display) {
if (!display.isValidLocked()) { // null check for display.mPrimaryDisplayDevice
return;
}
// updated primary device directly from LogicalDisplay (not from DisplayInfo)
final DisplayDevice displayDevice = display.getPrimaryDisplayDeviceLocked();
// final in LogicalDisplay
final int displayId = display.getDisplayIdLocked();
final String primaryDisplayUniqueId = displayDevice.getUniqueId();
final Integer linkedDeviceUniqueId =
mVirtualDeviceDisplayMapping.get(primaryDisplayUniqueId);
// Get current display group data
int groupId = getDisplayGroupIdFromDisplayIdLocked(displayId);
Integer deviceDisplayGroupId = null;
if (linkedDeviceUniqueId != null
&& mDeviceDisplayGroupIds.indexOfKey(linkedDeviceUniqueId) > 0) {
deviceDisplayGroupId = mDeviceDisplayGroupIds.get(linkedDeviceUniqueId);
}
final DisplayGroup oldGroup = getDisplayGroupLocked(groupId);
// groupName directly from LogicalDisplay (not from DisplayInfo)
final String groupName = display.getDisplayGroupNameLocked();
// DisplayDeviceInfo is safe to use, it is updated earlier
final DisplayDeviceInfo displayDeviceInfo = displayDevice.getDisplayDeviceInfoLocked();
// Get the new display group if a change is needed, if display group name is empty and
// {@code DisplayDeviceInfo.FLAG_OWN_DISPLAY_GROUP} is not set, the display is assigned
// to the default display group.
final boolean needsOwnDisplayGroup =
(displayDeviceInfo.flags & DisplayDeviceInfo.FLAG_OWN_DISPLAY_GROUP) != 0
|| !TextUtils.isEmpty(groupName);
final boolean hasOwnDisplayGroup = groupId != Display.DEFAULT_DISPLAY_GROUP;
final boolean needsDeviceDisplayGroup =
!needsOwnDisplayGroup && linkedDeviceUniqueId != null;
final boolean hasDeviceDisplayGroup =
deviceDisplayGroupId != null && groupId == deviceDisplayGroupId;
if (groupId == Display.INVALID_DISPLAY_GROUP
|| hasOwnDisplayGroup != needsOwnDisplayGroup
|| hasDeviceDisplayGroup != needsDeviceDisplayGroup) {
groupId =
assignDisplayGroupIdLocked(needsOwnDisplayGroup,
display.getDisplayGroupNameLocked(), needsDeviceDisplayGroup,
linkedDeviceUniqueId);
}
// Create a new group if needed
DisplayGroup newGroup = getDisplayGroupLocked(groupId);
if (newGroup == null) {
newGroup = new DisplayGroup(groupId);
mDisplayGroups.append(groupId, newGroup);
}
if (oldGroup != newGroup) {
if (oldGroup != null) {
oldGroup.removeDisplayLocked(display);
}
newGroup.addDisplayLocked(display);
display.updateDisplayGroupIdLocked(groupId);
Slog.i(TAG, "Setting new display group " + groupId + " for display "
+ displayId + ", from previous group: "
+ (oldGroup != null ? oldGroup.getGroupId() : "null"));
}
}
/**
* Goes through all the displays used in the layouts for the specified {@code fromState} and
* {@code toState} and un/marks them for transition. When a new layout is requested, we
* mark the displays that will change into a transitional phase so that they can all be turned
* OFF. Once all are confirmed OFF, then this method gets called again to reset transition
* marker. This helps to ensure that all display-OFF requests are made before
* display-ON which in turn hides any resizing-jank windows might incur when switching displays.
*
* @param fromState The state we are switching from.
* @param toState The state we are switching to.
* @param transitionValue The value to mark the transition state: true == transitioning.
*/
private void resetLayoutLocked(int fromState, int toState, boolean transitionValue) {
final Layout fromLayout = mDeviceStateToLayoutMap.get(fromState);
final Layout toLayout = mDeviceStateToLayoutMap.get(toState);
final int count = mLogicalDisplays.size();
for (int i = 0; i < count; i++) {
final LogicalDisplay logicalDisplay = mLogicalDisplays.valueAt(i);
final int displayId = logicalDisplay.getDisplayIdLocked();
final DisplayDevice device = logicalDisplay.getPrimaryDisplayDeviceLocked();
if (device == null) {
// If there's no device, then the logical display is due to be removed. Ignore it.
continue;
}
// Grab the display associations this display-device has in the old layout and the
// new layout.
final DisplayAddress address = device.getDisplayDeviceInfoLocked().address;
// Virtual displays do not have addresses, so account for nulls.
final Layout.Display fromDisplay =
address != null ? fromLayout.getByAddress(address) : null;
final Layout.Display toDisplay =
address != null ? toLayout.getByAddress(address) : null;
// If the display is in one of the layouts but not the other, then the content will
// change, so in this case we also want to blank the displays to avoid jank.
final boolean displayNotInBothLayouts = (fromDisplay == null) != (toDisplay == null);
// If a layout doesn't mention a display-device at all, then the display-device defaults
// to enabled. This is why we treat null as "enabled" in the code below.
final boolean wasEnabled = fromDisplay == null || fromDisplay.isEnabled();
final boolean willBeEnabled = toDisplay == null || toDisplay.isEnabled();
final boolean deviceHasNewLogicalDisplayId = fromDisplay != null && toDisplay != null
&& fromDisplay.getLogicalDisplayId() != toDisplay.getLogicalDisplayId();
// We consider a display-device as changing/transition if
// 1) It's already marked as transitioning
// 2) It's going from enabled to disabled, or vice versa
// 3) It's enabled, but it's mapped to a new logical display ID. To the user this
// would look like apps moving from one screen to another since task-stacks stay
// with the logical display [ID].
// 4) It's in one layout but not the other, so the content will change.
final boolean isTransitioning =
logicalDisplay.isInTransitionLocked()
|| (wasEnabled != willBeEnabled)
|| deviceHasNewLogicalDisplayId
|| displayNotInBothLayouts;
if (isTransitioning) {
if (transitionValue != logicalDisplay.isInTransitionLocked()) {
Slog.i(TAG, "Set isInTransition on display " + displayId + ": "
+ transitionValue);
}
// This will either mark the display as "transitioning" if we are starting to change
// the device state, or remove the transitioning marker if the state change is
// ending.
logicalDisplay.setIsInTransitionLocked(transitionValue);
mUpdatedLogicalDisplays.put(displayId, UPDATE_STATE_TRANSITION);
}
}
}
/**
* Apply (or reapply) the currently selected display layout.
*/
private void applyLayoutLocked() {
final Layout oldLayout = mCurrentLayout;
mCurrentLayout = mDeviceStateToLayoutMap.get(mDeviceState);
Slog.i(TAG, "Applying layout: " + mCurrentLayout + ", Previous layout: " + oldLayout);
// Go through each of the displays in the current layout set.
final int size = mCurrentLayout.size();
for (int i = 0; i < size; i++) {
final Layout.Display displayLayout = mCurrentLayout.getAt(i);
// If the underlying display-device we want to use for this display
// doesn't exist, then skip it. This can happen at startup as display-devices
// trickle in one at a time. When the new display finally shows up, the layout is
// recalculated so that the display is properly added to the current layout.
final DisplayAddress address = displayLayout.getAddress();
final DisplayDevice device = mDisplayDeviceRepo.getByAddressLocked(address);
if (device == null) {
Slog.w(TAG, "applyLayoutLocked: The display device (" + address + "), is not "
+ "available for the display state " + mDeviceState);
continue;
}
// Now that we have a display-device, we need a LogicalDisplay to map it to. Find the
// right one, if it doesn't exist, create a new one.
final int logicalDisplayId = displayLayout.getLogicalDisplayId();
LogicalDisplay newDisplay = getDisplayLocked(logicalDisplayId);
boolean newDisplayCreated = false;
if (newDisplay == null) {
newDisplay = createNewLogicalDisplayLocked(
null /*displayDevice*/, logicalDisplayId);
newDisplayCreated = true;
}
// Now swap the underlying display devices between the old display and the new display
final LogicalDisplay oldDisplay = getDisplayLocked(device);
if (newDisplay != oldDisplay) {
// Display is swapping, notify WindowManager, so it can prepare for
// the display switch
if (!newDisplayCreated && mWindowManagerPolicy != null) {
mWindowManagerPolicy.onDisplaySwitchStart(newDisplay.getDisplayIdLocked());
}
newDisplay.swapDisplaysLocked(oldDisplay);
}
DisplayDeviceConfig config = device.getDisplayDeviceConfig();
newDisplay.setDevicePositionLocked(displayLayout.getPosition());
newDisplay.setLeadDisplayLocked(displayLayout.getLeadDisplayId());
newDisplay.updateLayoutLimitedRefreshRateLocked(
config.getRefreshRange(displayLayout.getRefreshRateZoneId())
);
newDisplay.updateThermalRefreshRateThrottling(
config.getThermalRefreshRateThrottlingData(
displayLayout.getRefreshRateThermalThrottlingMapId()
)
);
setEnabledLocked(newDisplay, displayLayout.isEnabled());
newDisplay.setThermalBrightnessThrottlingDataIdLocked(
displayLayout.getThermalBrightnessThrottlingMapId() == null
? DisplayDeviceConfig.DEFAULT_ID
: displayLayout.getThermalBrightnessThrottlingMapId());
newDisplay.setPowerThrottlingDataIdLocked(
displayLayout.getPowerThrottlingMapId() == null
? DisplayDeviceConfig.DEFAULT_ID
: displayLayout.getPowerThrottlingMapId());
newDisplay.setDisplayGroupNameLocked(displayLayout.getDisplayGroupName());
}
}
/**
* Creates a new logical display for the specified device and display Id and adds it to the list
* of logical displays.
*
* @param device The device to associate with the LogicalDisplay.
* @param displayId The display ID to give the new display. If invalid, a new ID is assigned.
* @return The new logical display if created, null otherwise.
*/
private LogicalDisplay createNewLogicalDisplayLocked(DisplayDevice device, int displayId) {
final int layerStack = assignLayerStackLocked(displayId);
final LogicalDisplay display = new LogicalDisplay(displayId, layerStack, device,
mFlags.isPixelAnisotropyCorrectionInLogicalDisplayEnabled(),
mFlags.isAlwaysRotateDisplayDeviceEnabled());
display.updateLocked(mDisplayDeviceRepo, mSyntheticModeManager);
final DisplayInfo info = display.getDisplayInfoLocked();
if (info.type == Display.TYPE_INTERNAL && mDeviceStateToLayoutMap.size() > 1) {
// If this is an internal display and the device uses a display layout configuration,
// the display should be disabled as later we will receive a device state update, which
// will tell us which internal displays should be enabled and which should be disabled.
display.setEnabledLocked(false);
}
mLogicalDisplays.put(displayId, display);
return display;
}
void setEnabledLocked(LogicalDisplay display, boolean isEnabled) {
final int displayId = display.getDisplayIdLocked();
final DisplayInfo info = display.getDisplayInfoLocked();
final boolean disallowSecondaryDisplay = mSingleDisplayDemoMode
&& (info.type != Display.TYPE_INTERNAL);
if (isEnabled && disallowSecondaryDisplay) {
Slog.i(TAG, "Not creating a logical display for a secondary display because single"
+ " display demo mode is enabled: " + display.getDisplayInfoLocked());
isEnabled = false;
}
if (display.isEnabledLocked() != isEnabled) {
Slog.i(TAG, "SetEnabled on display " + displayId + ": " + isEnabled);
display.setEnabledLocked(isEnabled);
}
}
private int assignDisplayGroupIdLocked(boolean isOwnDisplayGroup, String displayGroupName,
boolean isDeviceDisplayGroup, Integer linkedDeviceUniqueId) {
if (isDeviceDisplayGroup && linkedDeviceUniqueId != null) {
int deviceDisplayGroupId = mDeviceDisplayGroupIds.get(linkedDeviceUniqueId);
// A value of 0 indicates that no device display group was found.
if (deviceDisplayGroupId == 0) {
deviceDisplayGroupId = mNextNonDefaultGroupId++;
mDeviceDisplayGroupIds.put(linkedDeviceUniqueId, deviceDisplayGroupId);
}
return deviceDisplayGroupId;
}
if (!isOwnDisplayGroup) return Display.DEFAULT_DISPLAY_GROUP;
Integer displayGroupId = mDisplayGroupIdsByName.get(displayGroupName);
if (displayGroupId == null) {
displayGroupId = Integer.valueOf(mNextNonDefaultGroupId++);
mDisplayGroupIdsByName.put(displayGroupName, displayGroupId);
}
return displayGroupId;
}
private void initializeDefaultDisplayDeviceLocked(DisplayDevice device) {
// We always want to make sure that our default layout creates a logical
// display for the default display device that is found.
// To that end, when we are notified of a new default display, we add it to
// the default layout definition if it is not already there.
final Layout layout = mDeviceStateToLayoutMap.get(DeviceStateToLayoutMap.STATE_DEFAULT);
if (layout.getById(DEFAULT_DISPLAY) != null) {
// The layout should only have one default display
return;
}
final DisplayDeviceInfo info = device.getDisplayDeviceInfoLocked();
layout.createDefaultDisplayLocked(info.address, mIdProducer);
}
private int assignLayerStackLocked(int displayId) {
// Currently layer stacks and display ids are the same.
// This need not be the case.
return displayId;
}
private SparseBooleanArray toSparseBooleanArray(int[] input) {
final SparseBooleanArray retval = new SparseBooleanArray(2);
for (int i = 0; input != null && i < input.length; i++) {
retval.put(input[i], true);
}
return retval;
}
/**
* Returns true if the device would definitely have outer display ON/Stay Awake on fold based on
* the value of `Continue using app on fold` setting
*/
private boolean shouldStayAwakeOnFold() {
return mFoldSettingProvider.shouldStayAwakeOnFold() || (
mFoldSettingProvider.shouldSelectiveStayAwakeOnFold()
&& mFoldGracePeriodProvider.isEnabled());
}
private String displayEventToString(int msg) {
switch(msg) {
case LOGICAL_DISPLAY_EVENT_ADDED:
return "added";
case LOGICAL_DISPLAY_EVENT_DEVICE_STATE_TRANSITION:
return "transition";
case LOGICAL_DISPLAY_EVENT_CHANGED:
return "changed";
case LOGICAL_DISPLAY_EVENT_FRAME_RATE_OVERRIDES_CHANGED:
return "framerate_override";
case LOGICAL_DISPLAY_EVENT_SWAPPED:
return "swapped";
case LOGICAL_DISPLAY_EVENT_REMOVED:
return "removed";
case LOGICAL_DISPLAY_EVENT_HDR_SDR_RATIO_CHANGED:
return "hdr_sdr_ratio_changed";
case LOGICAL_DISPLAY_EVENT_CONNECTED:
return "connected";
case LOGICAL_DISPLAY_EVENT_DISCONNECTED:
return "disconnected";
}
return null;
}
void setDisplayEnabledLocked(@NonNull LogicalDisplay display, boolean enabled) {
boolean isEnabled = display.isEnabledLocked();
if (isEnabled == enabled) {
Slog.w(TAG, "Display is already " + (isEnabled ? "enabled" : "disabled") + ": "
+ display.getDisplayIdLocked());
return;
}
setEnabledLocked(display, enabled);
updateLogicalDisplaysLocked();
}
public interface Listener {
void onLogicalDisplayEventLocked(LogicalDisplay display, int event);
void onDisplayGroupEventLocked(int groupId, int event);
void onTraversalRequested();
}
private class LogicalDisplayMapperHandler extends Handler {
LogicalDisplayMapperHandler(Looper looper) {
super(looper, null, true /*async*/);
}
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case MSG_TRANSITION_TO_PENDING_DEVICE_STATE:
synchronized (mSyncRoot) {
finishStateTransitionLocked(true /*force*/);
}
break;
}
}
}
}
本文介绍了SWT中Display.getDefault()和Display.getCurrent()方法的作用。Display.getDefault()用于获取默认的显示实例，若不存在则创建。Display.getCurrent()用于获取当前线程的显示实例，以此判断是否为界面线程。
扫一扫
1229
被折叠的 条评论
为什么被折叠?
到【灌水乐园】发言
