We can now (kind-of) change screen density on the fly. (dde331ce) · Commits · e / os / android_frameworks_base

api/current.txt

+3 −1

Original line number	Diff line number	Diff line
		@@ -8114,8 +8114,11 @@ package android.graphics {
		method public static android.graphics.Bitmap createBitmap(android.graphics.Bitmap, int, int, int, int);
		method public static android.graphics.Bitmap createBitmap(android.graphics.Bitmap, int, int, int, int, android.graphics.Matrix, boolean);
		method public static android.graphics.Bitmap createBitmap(int, int, android.graphics.Bitmap.Config);
		method public static android.graphics.Bitmap createBitmap(android.util.DisplayMetrics, int, int, android.graphics.Bitmap.Config);
		method public static android.graphics.Bitmap createBitmap(int[], int, int, int, int, android.graphics.Bitmap.Config);
		method public static android.graphics.Bitmap createBitmap(android.util.DisplayMetrics, int[], int, int, int, int, android.graphics.Bitmap.Config);
		method public static android.graphics.Bitmap createBitmap(int[], int, int, android.graphics.Bitmap.Config);
		method public static android.graphics.Bitmap createBitmap(android.util.DisplayMetrics, int[], int, int, android.graphics.Bitmap.Config);
		method public static android.graphics.Bitmap createScaledBitmap(android.graphics.Bitmap, int, int, boolean);
		method public int describeContents();
		method public void eraseColor(int);
		@@ -19958,7 +19961,6 @@ package android.service.dreams {
		method public boolean onPreparePanel(int, android.view.View, android.view.Menu);
		method public boolean onSearchRequested();
		method public void onStart();
		method public final int onStartCommand(android.content.Intent, int, int);
		method public void onWindowAttributesChanged(android.view.WindowManager.LayoutParams);
		method public void onWindowFocusChanged(boolean);
		method public android.view.ActionMode onWindowStartingActionMode(android.view.ActionMode.Callback);

cmds/am/src/com/android/commands/am/Am.java

+43 −0

Original line number	Diff line number	Diff line
		@@ -133,6 +133,8 @@ public class Am {
		runScreenCompat();
		} else if (op.equals("display-size")) {
		runDisplaySize();
		} else if (op.equals("display-density")) {
		runDisplayDensity();
		} else if (op.equals("to-uri")) {
		runToUri(false);
		} else if (op.equals("to-intent-uri")) {
		@@ -1127,6 +1129,44 @@ public class Am {
		}
		}

		private void runDisplayDensity() throws Exception {
		String densityStr = nextArgRequired();
		int density;
		if ("reset".equals(densityStr)) {
		density = -1;
		} else {
		try {
		density = Integer.parseInt(densityStr);
		} catch (NumberFormatException e) {
		System.err.println("Error: bad number " + e);
		showUsage();
		return;
		}
		if (density < 72) {
		System.err.println("Error: density must be >= 72");
		showUsage();
		return;
		}
		}

		IWindowManager wm = IWindowManager.Stub.asInterface(ServiceManager.checkService(
		Context.WINDOW_SERVICE));
		if (wm == null) {
		System.err.println(NO_SYSTEM_ERROR_CODE);
		throw new AndroidException("Can't connect to window manager; is the system running?");
		}

		try {
		if (density > 0) {
		// TODO(multidisplay): For now Configuration only applies to main screen.
		wm.setForcedDisplayDensity(Display.DEFAULT_DISPLAY, density);
		} else {
		wm.clearForcedDisplayDensity(Display.DEFAULT_DISPLAY);
		}
		} catch (RemoteException e) {
		}
		}

		private void runToUri(boolean intentScheme) throws Exception {
		Intent intent = makeIntent();
		System.out.println(intent.toUri(intentScheme ? Intent.URI_INTENT_SCHEME : 0));
		@@ -1301,6 +1341,7 @@ public class Am {
		" am monitor [--gdb <port>]\n" +
		" am screen-compat [on\|off] <PACKAGE>\n" +
		" am display-size [reset\|MxN]\n" +
		" am display-density [reset\|DENSITY]\n" +
		" am to-uri [INTENT]\n" +
		" am to-intent-uri [INTENT]\n" +
		"\n" +
		@@ -1355,6 +1396,8 @@ public class Am {
		"\n" +
		"am display-size: override display size.\n" +
		"\n" +
		"am display-density: override display density.\n" +
		"\n" +
		"am to-uri: print the given Intent specification as a URI.\n" +
		"\n" +
		"am to-intent-uri: print the given Intent specification as an intent: URI.\n" +

core/java/android/app/ActivityThread.java

+29 −11

Original line number	Diff line number	Diff line
		@@ -167,6 +167,7 @@ public final class ActivityThread {
		AppBindData mBoundApplication;
		Profiler mProfiler;
		int mCurDefaultDisplayDpi;
		boolean mDensityCompatMode;
		Configuration mConfiguration;
		Configuration mCompatConfiguration;
		Configuration mResConfiguration;
		@@ -2733,7 +2734,8 @@ public final class ActivityThread {

		// On platforms where we don't want thumbnails, set dims to (0,0)
		if ((w > 0) && (h > 0)) {
		thumbnail = Bitmap.createBitmap(w, h, THUMBNAIL_FORMAT);
		thumbnail = Bitmap.createBitmap(r.activity.getResources().getDisplayMetrics(),
		w, h, THUMBNAIL_FORMAT);
		thumbnail.eraseColor(0);
		}
		}
		@@ -3468,6 +3470,7 @@ public final class ActivityThread {
		// If there was a pending configuration change, execute it first.
		if (changedConfig != null) {
		mCurDefaultDisplayDpi = changedConfig.densityDpi;
		updateDefaultDensity();
		handleConfigurationChanged(changedConfig, null);
		}

		@@ -3718,6 +3721,7 @@ public final class ActivityThread {
		if (!mPendingConfiguration.isOtherSeqNewer(config)) {
		config = mPendingConfiguration;
		mCurDefaultDisplayDpi = config.densityDpi;
		updateDefaultDensity();
		}
		mPendingConfiguration = null;
		}
		@@ -3920,6 +3924,18 @@ public final class ActivityThread {
		}
		}

		private void updateDefaultDensity() {
		if (mCurDefaultDisplayDpi != Configuration.DENSITY_DPI_UNDEFINED
		&& mCurDefaultDisplayDpi != DisplayMetrics.DENSITY_DEVICE
		&& !mDensityCompatMode) {
		Slog.i(TAG, "Switching default density from "
		+ DisplayMetrics.DENSITY_DEVICE + " to "
		+ mCurDefaultDisplayDpi);
		DisplayMetrics.DENSITY_DEVICE = mCurDefaultDisplayDpi;
		Bitmap.setDefaultDensity(DisplayMetrics.DENSITY_DEFAULT);
		}
		}

		private void handleBindApplication(AppBindData data) {
		mBoundApplication = data;
		mConfiguration = new Configuration(data.config);
		@@ -3980,6 +3996,16 @@ public final class ActivityThread {

		data.info = getPackageInfoNoCheck(data.appInfo, data.compatInfo);

		/**
		* Switch this process to density compatibility mode if needed.
		*/
		if ((data.appInfo.flags&ApplicationInfo.FLAG_SUPPORTS_SCREEN_DENSITIES)
		== 0) {
		mDensityCompatMode = true;
		Bitmap.setDefaultDensity(DisplayMetrics.DENSITY_DEFAULT);
		}
		updateDefaultDensity();

		final ContextImpl appContext = new ContextImpl();
		appContext.init(data.info, null, this);
		final File cacheDir = appContext.getCacheDir();
		@@ -4010,14 +4036,6 @@ public final class ActivityThread {
		StrictMode.enableDeathOnNetwork();
		}

		/**
		* Switch this process to density compatibility mode if needed.
		*/
		if ((data.appInfo.flags&ApplicationInfo.FLAG_SUPPORTS_SCREEN_DENSITIES)
		== 0) {
		Bitmap.setDefaultDensity(DisplayMetrics.DENSITY_DEFAULT);
		}

		if (data.debugMode != IApplicationThread.DEBUG_OFF) {
		// XXX should have option to change the port.
		Debug.changeDebugPort(8100);

core/java/android/content/res/Resources.java

+41 −12

Original line number	Diff line number	Diff line
		@@ -89,7 +89,8 @@ public class Resources {
		= new LongSparseArray<ColorStateList>();
		private static final LongSparseArray<Drawable.ConstantState> sPreloadedColorDrawables
		= new LongSparseArray<Drawable.ConstantState>();
		private static boolean mPreloaded;
		private static boolean sPreloaded;
		private static int sPreloadedDensity;

		/package/ final TypedValue mTmpValue = new TypedValue();
		/package/ final Configuration mTmpConfig = new Configuration();
		@@ -1837,11 +1838,14 @@ public class Resources {
		*/
		public final void startPreloading() {
		synchronized (mSync) {
		if (mPreloaded) {
		if (sPreloaded) {
		throw new IllegalStateException("Resources already preloaded");
		}
		mPreloaded = true;
		sPreloaded = true;
		mPreloading = true;
		sPreloadedDensity = DisplayMetrics.DENSITY_DEVICE;
		mConfiguration.densityDpi = sPreloadedDensity;
		updateConfiguration(null, null);
		}
		}

		@@ -1856,6 +1860,23 @@ public class Resources {
		}
		}

		private boolean verifyPreloadConfig(TypedValue value, String name) {
		if ((value.changingConfigurations&~(ActivityInfo.CONFIG_FONT_SCALE
		\| ActivityInfo.CONFIG_DENSITY)) != 0) {
		String resName;
		try {
		resName = getResourceName(value.resourceId);
		} catch (NotFoundException e) {
		resName = "?";
		}
		Log.w(TAG, "Preloaded " + name + " resource #0x"
		+ Integer.toHexString(value.resourceId)
		+ " (" + resName + ") that varies with configuration!!");
		return false;
		}
		return true;
		}

		/package/ Drawable loadDrawable(TypedValue value, int id)
		throws NotFoundException {

		@@ -1879,8 +1900,10 @@ public class Resources {
		return dr;
		}

		Drawable.ConstantState cs = isColorDrawable ?
		sPreloadedColorDrawables.get(key) : sPreloadedDrawables.get(key);
		Drawable.ConstantState cs = isColorDrawable
		? sPreloadedColorDrawables.get(key)
		: (sPreloadedDensity == mConfiguration.densityDpi
		? sPreloadedDrawables.get(key) : null);
		if (cs != null) {
		dr = cs.newDrawable(this);
		} else {
		@@ -1948,11 +1971,13 @@ public class Resources {
		cs = dr.getConstantState();
		if (cs != null) {
		if (mPreloading) {
		if (verifyPreloadConfig(value, "drawable")) {
		if (isColorDrawable) {
		sPreloadedColorDrawables.put(key, cs);
		} else {
		sPreloadedDrawables.put(key, cs);
		}
		}
		} else {
		synchronized (mTmpValue) {
		//Log.i(TAG, "Saving cached drawable @ #" +
		@@ -2016,8 +2041,10 @@ public class Resources {

		csl = ColorStateList.valueOf(value.data);
		if (mPreloading) {
		if (verifyPreloadConfig(value, "color")) {
		sPreloadedColorStateLists.put(key, csl);
		}
		}

		return csl;
		}
		@@ -2060,7 +2087,9 @@ public class Resources {

		if (csl != null) {
		if (mPreloading) {
		if (verifyPreloadConfig(value, "color")) {
		sPreloadedColorStateLists.put(key, csl);
		}
		} else {
		synchronized (mTmpValue) {
		//Log.i(TAG, "Saving cached color state list @ #" +

core/java/android/provider/Settings.java

+7 −0

Original line number	Diff line number	Diff line
		@@ -2793,6 +2793,13 @@ public final class Settings {
		*/
		public static final String DISPLAY_SIZE_FORCED = "display_size_forced";

		/**
		* The saved value for WindowManagerService.setForcedDisplayDensity().
		* One integer in dpi. If unset, then use the real display density.
		* @hide
		*/
		public static final String DISPLAY_DENSITY_FORCED = "display_density_forced";

		/**
		* Whether assisted GPS should be enabled or not.
		* @hide