void attach(IWallpaperEngineWrapper wrapper) {
if (DEBUG) Log.v(TAG, "attach: " + this + " wrapper=" + wrapper);
if (mDestroyed) {
return;
}
mIWallpaperEngine = wrapper;
mCaller = wrapper.mCaller;
mConnection = wrapper.mConnection;
mWindowToken = wrapper.mWindowToken;
mSurfaceHolder.setSizeFromLayout();
mInitializing = true;
mSession = WindowManagerGlobal.getWindowSession(getMainLooper());
mWindow.setSession(mSession);
mScreenOn = ((PowerManager) getSystemService(Context.POWER_SERVICE)).isScreenOn();
IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_SCREEN_ON);
filter.addAction(Intent.ACTION_SCREEN_OFF);
registerReceiver(mReceiver, filter);
if (DEBUG) Log.v(TAG, "onCreate(): " + this);
onCreate(mSurfaceHolder);
mInitializing = false;
mReportedVisible = false;
updateSurface(false, false, false);
}
/**
* Control whether this wallpaper will receive raw touch events from the window manager as the
* user interacts with the window that is currently displaying the wallpaper. By default they
* are turned off. If enabled, the events will be received in {@link
* #onTouchEvent(MotionEvent)}.
*/
public void setTouchEventsEnabled(boolean enabled) {
mWindowFlags =
enabled
? (mWindowFlags & ~WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE)
: (mWindowFlags | WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE);
if (mCreated) {
updateSurface(false, false, false);
}
}
/**
* Control whether this wallpaper will receive notifications when the wallpaper has been
* scrolled. By default, wallpapers will receive notifications, although the default static
* image wallpapers do not. It is a performance optimization to set this to false.
*
* @param enabled whether the wallpaper wants to receive offset notifications
*/
public void setOffsetNotificationsEnabled(boolean enabled) {
mWindowPrivateFlags =
enabled
? (mWindowPrivateFlags
| WindowManager.LayoutParams.PRIVATE_FLAG_WANTS_OFFSET_NOTIFICATIONS)
: (mWindowPrivateFlags
& ~WindowManager.LayoutParams.PRIVATE_FLAG_WANTS_OFFSET_NOTIFICATIONS);
if (mCreated) {
updateSurface(false, false, false);
}
}
void reportVisibility() {
if (!mDestroyed) {
boolean visible = mVisible && mScreenOn;
if (mReportedVisible != visible) {
mReportedVisible = visible;
if (DEBUG) Log.v(TAG, "onVisibilityChanged(" + visible + "): " + this);
if (visible) {
// If becoming visible, in preview mode the surface
// may have been destroyed so now we need to make
// sure it is re-created.
doOffsetsChanged(false);
updateSurface(false, false, false);
}
onVisibilityChanged(visible);
}
}
}