| package android.app; |
| |
| import android.annotation.NonNull; |
| import android.annotation.RequiresPermission; |
| import android.annotation.SystemApi; |
| import android.annotation.SystemService; |
| import android.content.Context; |
| import android.os.Handler; |
| import android.os.RemoteException; |
| import android.service.vr.IPersistentVrStateCallbacks; |
| import android.service.vr.IVrManager; |
| import android.service.vr.IVrStateCallbacks; |
| import android.util.ArrayMap; |
| |
| import java.util.Map; |
| |
| /** |
| * Used to control aspects of a devices Virtual Reality (VR) capabilities. |
| * @hide |
| */ |
| @SystemApi |
| @SystemService(Context.VR_SERVICE) |
| public class VrManager { |
| |
| private static class CallbackEntry { |
| final IVrStateCallbacks mStateCallback = new IVrStateCallbacks.Stub() { |
| @Override |
| public void onVrStateChanged(boolean enabled) { |
| mHandler.post(() -> mCallback.onVrStateChanged(enabled)); |
| } |
| |
| }; |
| final IPersistentVrStateCallbacks mPersistentStateCallback = |
| new IPersistentVrStateCallbacks.Stub() { |
| @Override |
| public void onPersistentVrStateChanged(boolean enabled) { |
| mHandler.post(() -> mCallback.onPersistentVrStateChanged(enabled)); |
| } |
| }; |
| final VrStateCallback mCallback; |
| final Handler mHandler; |
| |
| CallbackEntry(VrStateCallback callback, Handler handler) { |
| mCallback = callback; |
| mHandler = handler; |
| } |
| } |
| |
| private final IVrManager mService; |
| private Map<VrStateCallback, CallbackEntry> mCallbackMap = new ArrayMap<>(); |
| |
| /** |
| * {@hide} |
| */ |
| public VrManager(IVrManager service) { |
| mService = service; |
| } |
| |
| /** |
| * Registers a callback to be notified of changes to the VR Mode state. |
| * |
| * @param callback The callback to register. |
| * @hide |
| */ |
| @RequiresPermission(android.Manifest.permission.RESTRICTED_VR_ACCESS) |
| public void registerVrStateCallback(VrStateCallback callback, @NonNull Handler handler) { |
| if (callback == null || mCallbackMap.containsKey(callback)) { |
| return; |
| } |
| |
| CallbackEntry entry = new CallbackEntry(callback, handler); |
| mCallbackMap.put(callback, entry); |
| try { |
| mService.registerListener(entry.mStateCallback); |
| mService.registerPersistentVrStateListener(entry.mPersistentStateCallback); |
| } catch (RemoteException e) { |
| try { |
| unregisterVrStateCallback(callback); |
| } catch (Exception ignore) { |
| e.rethrowFromSystemServer(); |
| } |
| } |
| } |
| |
| /** |
| * Deregisters VR State callbacks. |
| * |
| * @param callback The callback to deregister. |
| * @hide |
| */ |
| @RequiresPermission(android.Manifest.permission.RESTRICTED_VR_ACCESS) |
| public void unregisterVrStateCallback(VrStateCallback callback) { |
| CallbackEntry entry = mCallbackMap.remove(callback); |
| if (entry != null) { |
| try { |
| mService.unregisterListener(entry.mStateCallback); |
| } catch (RemoteException ignore) { |
| // Dont rethrow exceptions from requests to unregister. |
| } |
| |
| try { |
| mService.unregisterPersistentVrStateListener(entry.mPersistentStateCallback); |
| } catch (RemoteException ignore) { |
| // Dont rethrow exceptions from requests to unregister. |
| } |
| } |
| } |
| |
| /** |
| * Returns the current VrMode state. |
| * @hide |
| */ |
| @RequiresPermission(android.Manifest.permission.ACCESS_VR_STATE) |
| public boolean getVrModeEnabled() { |
| try { |
| return mService.getVrModeState(); |
| } catch (RemoteException e) { |
| e.rethrowFromSystemServer(); |
| } |
| return false; |
| } |
| |
| /** |
| * Returns the current VrMode state. |
| * @hide |
| */ |
| @RequiresPermission(android.Manifest.permission.ACCESS_VR_STATE) |
| public boolean getPersistentVrModeEnabled() { |
| try { |
| return mService.getPersistentVrModeEnabled(); |
| } catch (RemoteException e) { |
| e.rethrowFromSystemServer(); |
| } |
| return false; |
| } |
| |
| /** |
| * Sets the persistent VR mode state of a device. When a device is in persistent VR mode it will |
| * remain in VR mode even if the foreground does not specify Vr mode being enabled. Mainly used |
| * by VR viewers to indicate that a device is placed in a VR viewer. |
| * |
| * @see Activity#setVrModeEnabled(boolean, ComponentName) |
| * @param enabled true if the device should be placed in persistent VR mode. |
| */ |
| @RequiresPermission(android.Manifest.permission.RESTRICTED_VR_ACCESS) |
| public void setPersistentVrModeEnabled(boolean enabled) { |
| try { |
| mService.setPersistentVrModeEnabled(enabled); |
| } catch (RemoteException e) { |
| e.rethrowFromSystemServer(); |
| } |
| } |
| |
| /** |
| * Sets the resolution and DPI of the vr2d virtual display used to display 2D |
| * applications in VR mode. |
| * |
| * @param vr2dDisplayProp properties to be set to the virtual display for |
| * 2D applications in VR mode. |
| * |
| * {@hide} |
| */ |
| @RequiresPermission(android.Manifest.permission.RESTRICTED_VR_ACCESS) |
| public void setVr2dDisplayProperties( |
| Vr2dDisplayProperties vr2dDisplayProp) { |
| try { |
| mService.setVr2dDisplayProperties(vr2dDisplayProp); |
| } catch (RemoteException e) { |
| e.rethrowFromSystemServer(); |
| } |
| } |
| } |