Merge "Implementing smart device config backup" into main (b4df2351) · Commits · e / os / android_frameworks_base

packages/WallpaperBackup/src/com/android/wallpaperbackup/WallpaperBackupAgent.java

+80 −36

Original line number	Diff line number	Diff line
		@@ -120,6 +120,14 @@ public class WallpaperBackupAgent extends BackupAgent {
		static final String SYSTEM_GENERATION = "system_gen";
		static final String LOCK_GENERATION = "lock_gen";

		static final String DEVICE_CONFIG_WIDTH = "device_config_width";

		static final String DEVICE_CONFIG_HEIGHT = "device_config_height";

		static final String DEVICE_CONFIG_SECONDARY_WIDTH = "device_config_secondary_width";

		static final String DEVICE_CONFIG_SECONDARY_HEIGHT = "device_config_secondary_height";

		static final float DEFAULT_ACCEPTABLE_PARALLAX = 0.2f;

		// If this file exists, it means we exceeded our quota last time
		@@ -175,6 +183,16 @@ public class WallpaperBackupAgent extends BackupAgent {
		// disk churn.
		final int lastSysGeneration = sharedPrefs.getInt(SYSTEM_GENERATION, /* defValue= */ -1);
		final int lastLockGeneration = sharedPrefs.getInt(LOCK_GENERATION, /* defValue= */ -1);

		final int deviceConfigWidth = sharedPrefs.getInt(
		DEVICE_CONFIG_WIDTH, /* defValue= */ -1);
		final int deviceConfigHeight = sharedPrefs.getInt(
		DEVICE_CONFIG_HEIGHT, /* defValue= */ -1);
		final int deviceConfigSecondaryWidth = sharedPrefs.getInt(
		DEVICE_CONFIG_SECONDARY_WIDTH, /* defValue= */ -1);
		final int deviceConfigSecondaryHeight = sharedPrefs.getInt(
		DEVICE_CONFIG_SECONDARY_HEIGHT, /* defValue= */ -1);

		final int sysGeneration = mWallpaperManager.getWallpaperId(FLAG_SYSTEM);
		final int lockGeneration = mWallpaperManager.getWallpaperId(FLAG_LOCK);
		final boolean sysChanged = (sysGeneration != lastSysGeneration);
		@@ -195,7 +213,11 @@ public class WallpaperBackupAgent extends BackupAgent {
		backupWallpaperInfoFile(/* sysOrLockChanged= */ sysChanged \|\| lockChanged, data);
		backupSystemWallpaperFile(sharedPrefs, sysChanged, sysGeneration, data);
		backupLockWallpaperFileIfItExists(sharedPrefs, lockChanged, lockGeneration, data);
		backupDeviceInfoFile(data);

		final boolean isDeviceConfigChanged = isDeviceConfigChanged(deviceConfigWidth,
		deviceConfigHeight, deviceConfigSecondaryWidth, deviceConfigSecondaryHeight);

		backupDeviceInfoFile(sharedPrefs, isDeviceConfigChanged, data);
		} catch (Exception e) {
		Slog.e(TAG, "Unable to back up wallpaper", e);
		mEventLogger.onBackupException(e);
		@@ -209,14 +231,29 @@ public class WallpaperBackupAgent extends BackupAgent {
		}
		}

		private boolean isDeviceConfigChanged(int width, int height, int secondaryWidth,
		int secondaryHeight) {
		Point currentDimensions = getScreenDimensions();
		Display smallerDisplay = getSmallerDisplayIfExists();
		Point currentSecondaryDimensions = smallerDisplay != null ? getRealSize(smallerDisplay) :
		new Point(0, 0);

		return (currentDimensions.x != width
		\|\| currentDimensions.y != height
		\|\| currentSecondaryDimensions.x != secondaryWidth
		\|\| currentSecondaryDimensions.y != secondaryHeight);
		}

		/**
		* This method backs up the device dimension information. The device data will always get
		* overwritten when triggering a backup
		*/
		private void backupDeviceInfoFile(FullBackupDataOutput data)
		private void backupDeviceInfoFile(SharedPreferences sharedPrefs, boolean isDeviceConfigChanged,
		FullBackupDataOutput data)
		throws IOException {
		final File deviceInfoStage = new File(getFilesDir(), WALLPAPER_BACKUP_DEVICE_INFO_STAGE);

		if (isDeviceConfigChanged) {
		// save the dimensions of the device with xml formatting
		Point dimensions = getScreenDimensions();
		Display smallerDisplay = getSmallerDisplayIfExists();
		@@ -253,6 +290,13 @@ public class WallpaperBackupAgent extends BackupAgent {
		FileUtils.sync(fstream);
		fstream.close();

		SharedPreferences.Editor editor = sharedPrefs.edit();
		editor.putInt(DEVICE_CONFIG_WIDTH, dimensions.x);
		editor.putInt(DEVICE_CONFIG_HEIGHT, dimensions.y);
		editor.putInt(DEVICE_CONFIG_SECONDARY_WIDTH, secondaryDimensions.x);
		editor.putInt(DEVICE_CONFIG_SECONDARY_HEIGHT, secondaryDimensions.y);
		editor.apply();
		}
		if (DEBUG) Slog.v(TAG, "Storing device dimension data");
		backupFile(deviceInfoStage, data);
		}