File	Doc	Category	Size	Date	Package
DisplayManagerInternal.java	API Doc	Android 5.1 API	13063	Thu Mar 12 22:22:10 GMT 2015	android.hardware.display

DisplayManagerInternal

• java.lang.Object

Fields Summary

Constructors Summary

Methods Summary
public abstract android.view.DisplayInfo	getDisplayInfo(int displayId) Returns information about the specified logical display. param displayId The logical display id. return The logical display info, or null if the display does not exist. The returned object must be treated as immutable.
public abstract void	initPowerManagement(android.hardware.display.DisplayManagerInternal$DisplayPowerCallbacks callbacks, android.os.Handler handler, android.hardware.SensorManager sensorManager) Called by the power manager to initialize power management facilities.
public abstract boolean	isProximitySensorAvailable() Returns true if the proximity sensor screen-off function is available.
public abstract void	performTraversalInTransactionFromWindowManager() Called by the window manager to perform traversals while holding a surface flinger transaction.
public abstract void	registerDisplayTransactionListener(android.hardware.display.DisplayManagerInternal$DisplayTransactionListener listener) Registers a display transaction listener to provide the client a chance to update its surfaces within the same transaction as any display layout updates. param listener The listener to register.
public abstract boolean	requestPowerState(android.hardware.display.DisplayManagerInternal$DisplayPowerRequest request, boolean waitForNegativeProximity) Called by the power manager to request a new power state. The display power controller makes a copy of the provided object and then begins adjusting the power state to match what was requested. param request The requested power state. param waitForNegativeProximity If true, issues a request to wait for negative proximity before turning the screen back on, assuming the screen was turned off by the proximity sensor. return True if display is ready, false if there are important changes that must be made asynchronously (such as turning the screen on), in which case the caller should grab a wake lock, watch for {@link DisplayPowerCallbacks#onStateChanged()} then try the request again later until the state converges.
public abstract void	setDisplayInfoOverrideFromWindowManager(int displayId, android.view.DisplayInfo info) Overrides the display information of a particular logical display. This is used by the window manager to control the size and characteristics of the default display. It is expected to apply the requested change to the display information synchronously so that applications will immediately observe the new state. NOTE: This method must be the only entry point by which the window manager influences the logical configuration of displays. param displayId The logical display id. param info The new data to be stored.
public abstract void	setDisplayProperties(int displayId, boolean hasContent, float requestedRefreshRate, boolean inTraversal) Tells the display manager about properties of the display that depend on the windows on it. This includes whether there is interesting unique content on the specified logical display, and whether the one of the windows has a preferred refresh rate. If the display has unique content, then the display manager arranges for it to be presented on a physical display if appropriate. Otherwise, the display manager may choose to make the physical display mirror some other logical display. If one of the windows on the display has a preferred refresh rate that's supported by the display, then the display manager will request its use. param displayId The logical display id to update. param hasContent True if the logical display has content. This is used to control automatic mirroring. param requestedRefreshRate The preferred refresh rate for the top-most visible window that has a preference. param inTraversal True if called from WindowManagerService during a window traversal prior to call to performTraversalInTransactionFromWindowManager.
public abstract void	unregisterDisplayTransactionListener(android.hardware.display.DisplayManagerInternal$DisplayTransactionListener listener) Unregisters a display transaction listener to provide the client a chance to update its surfaces within the same transaction as any display layout updates. param listener The listener to unregister.