Settings: use WindowManager to set custom DPI (d24c2046) · Commits · e / os / android_packages_apps_Settings

src/com/android/settings/DisplaySettings.java

+41 −10

Original line number	Diff line number	Diff line
		@@ -19,6 +19,12 @@ package com.android.settings;

		import android.os.UserHandle;

		import android.view.Display;
		import android.view.IWindowManager;
		import android.view.WindowManager;
		import android.view.WindowManagerGlobal;
		import android.view.WindowManagerImpl;
		import android.widget.Toast;
		import com.android.internal.view.RotationPolicy;
		import com.android.settings.search.BaseSearchIndexProvider;
		import com.android.settings.search.Indexable;
		@@ -172,8 +178,8 @@ public class DisplaySettings extends SettingsPreferenceFragment implements

		mLcdDensityPreference = (ListPreference) findPreference(KEY_LCD_DENSITY);
		if (mLcdDensityPreference != null) {
		int defaultDensity = DisplayMetrics.DENSITY_DEVICE;
		int currentDensity = DisplayMetrics.DENSITY_CURRENT;
		int defaultDensity = getDefaultDensity();
		int currentDensity = getCurrentDensity();
		if (currentDensity < 10 \|\| currentDensity >= 1000) {
		// Unsupported value, force default
		currentDensity = defaultDensity;
		@@ -259,6 +265,28 @@ public class DisplaySettings extends SettingsPreferenceFragment implements
		initPulse((PreferenceCategory) findPreference(KEY_CATEGORY_LIGHTS));
		}

		private int getDefaultDensity() {
		IWindowManager wm = IWindowManager.Stub.asInterface(ServiceManager.checkService(
		Context.WINDOW_SERVICE));
		try {
		return wm.getInitialDisplayDensity(Display.DEFAULT_DISPLAY);
		} catch (RemoteException e) {
		e.printStackTrace();
		}
		return DisplayMetrics.DENSITY_DEVICE;
		}

		private int getCurrentDensity() {
		IWindowManager wm = IWindowManager.Stub.asInterface(ServiceManager.checkService(
		Context.WINDOW_SERVICE));
		try {
		return wm.getBaseDisplayDensity(Display.DEFAULT_DISPLAY);
		} catch (RemoteException e) {
		e.printStackTrace();
		}
		return DisplayMetrics.DENSITY_DEVICE;
		}

		private static boolean allowAllRotations(Context context) {
		return Resources.getSystem().getBoolean(
		com.android.internal.R.bool.config_allowAllRotations);
		@@ -354,7 +382,7 @@ public class DisplaySettings extends SettingsPreferenceFragment implements
		}

		private void updateLcdDensityPreferenceDescription(int currentDensity) {
		final int summaryResId = currentDensity == DisplayMetrics.DENSITY_DEVICE
		final int summaryResId = currentDensity == getDefaultDensity()
		? R.string.lcd_density_default_value_format : R.string.lcd_density_value_format;
		mLcdDensityPreference.setSummary(getString(summaryResId, currentDensity));
		}
		@@ -489,15 +517,11 @@ public class DisplaySettings extends SettingsPreferenceFragment implements
		}
		}

		private void writeLcdDensityPreference(final Context context, int value) {
		try {
		SystemProperties.set("persist.sys.lcd_density", Integer.toString(value));
		} catch (RuntimeException e) {
		Log.e(TAG, "Unable to save LCD density");
		return;
		}
		private void writeLcdDensityPreference(final Context context, final int density) {
		final IActivityManager am = ActivityManagerNative.asInterface(
		ServiceManager.checkService("activity"));
		final IWindowManager wm = IWindowManager.Stub.asInterface(ServiceManager.checkService(
		Context.WINDOW_SERVICE));
		AsyncTask<Void, Void, Void> task = new AsyncTask<Void, Void, Void>() {
		@Override
		protected void onPreExecute() {
		@@ -515,6 +539,13 @@ public class DisplaySettings extends SettingsPreferenceFragment implements
		} catch (InterruptedException e) {
		// Ignore
		}

		try {
		wm.setForcedDisplayDensity(Display.DEFAULT_DISPLAY, density);
		} catch (RemoteException e) {
		Log.e(TAG, "Failed to set density to " + density, e);
		}

		// Restart the UI
		try {
		am.restart();