Merge "Changed Notification shade's background alpha initial and final values to be configurable." (6209f7f5) · Commits · e / os / android_frameworks_base

packages/CarSystemUI/res/values/config.xml

+15 −0

Original line number	Diff line number	Diff line
		@@ -40,6 +40,21 @@
		slots that may be reused for things like IME control. -->
		<integer name="config_maxNotificationIcons">0</integer>

		<!--
		Initial alpha percent value for the background when the notification
		shade is open. Should be a number between, and inclusive, 0 and 100.
		If the number is 0, then the background alpha starts off fully
		transparent. If the number if 100, then the background alpha starts off
		fully opaque. -->
		<integer name="config_initialNotificationBackgroundAlpha">0</integer>
		<!--
		Final alpha percent value for the background when the notification
		shade is fully open. Should be a number between, and inclusive, 0 and
		100. If this value is smaller than
		config_initialNotificationBackgroundAlpha, the background will default
		to a constant alpha percent value using the initial alpha. -->
		<integer name="config_finalNotificationBackgroundAlpha">100</integer>

		<!-- SystemUI Services: The classes of the stuff to start. -->
		<string-array name="config_systemUIServiceComponents" translatable="false">
		<item>com.android.systemui.util.NotificationChannels</item>

packages/CarSystemUI/src/com/android/systemui/statusbar/car/CarStatusBar.java

+33 −6

Original line number	Diff line number	Diff line
		@@ -158,6 +158,9 @@ public class CarStatusBar extends StatusBar implements CarBatteryController.Batt
		private float mOpeningVelocity = DEFAULT_FLING_VELOCITY;
		private float mClosingVelocity = DEFAULT_FLING_VELOCITY;

		private float mBackgroundAlphaDiff;
		private float mInitialBackgroundAlpha;

		private FullscreenUserSwitcher mFullscreenUserSwitcher;

		private CarBatteryController mCarBatteryController;
		@@ -386,6 +389,25 @@ public class CarStatusBar extends StatusBar implements CarBatteryController.Batt
		mScreenLifecycle = Dependency.get(ScreenLifecycle.class);
		mScreenLifecycle.addObserver(mScreenObserver);

		// Notification bar related setup.
		mInitialBackgroundAlpha = (float) mContext.getResources().getInteger(
		R.integer.config_initialNotificationBackgroundAlpha) / 100;
		if (mInitialBackgroundAlpha < 0 \|\| mInitialBackgroundAlpha > 100) {
		throw new RuntimeException(
		"Unable to setup notification bar due to incorrect initial background alpha"
		+ " percentage");
		}
		float finalBackgroundAlpha = Math.max(
		mInitialBackgroundAlpha,
		(float) mContext.getResources().getInteger(
		R.integer.config_finalNotificationBackgroundAlpha) / 100);
		if (finalBackgroundAlpha < 0 \|\| finalBackgroundAlpha > 100) {
		throw new RuntimeException(
		"Unable to setup notification bar due to incorrect final background alpha"
		+ " percentage");
		}
		mBackgroundAlphaDiff = finalBackgroundAlpha - mInitialBackgroundAlpha;

		super.start();

		mNotificationPanel.setScrollingEnabled(true);
		@@ -1105,17 +1127,22 @@ public class CarStatusBar extends StatusBar implements CarBatteryController.Batt
		mHandleBar.setTranslationY(height - mHandleBar.getHeight() - lp.bottomMargin);
		}
		if (mNotificationView.getHeight() > 0) {
		// Calculates the alpha value for the background based on how much of the notification
		// shade is visible to the user. When the notification shade is completely open then
		// alpha value will be 1.
		float alpha = (float) height / mNotificationView.getHeight();
		Drawable background = mNotificationView.getBackground().mutate();

		background.setAlpha((int) (alpha * 255));
		background.setAlpha((int) (getBackgroundAlpha(height) * 255));
		mNotificationView.setBackground(background);
		}
		}

		/**
		* Calculates the alpha value for the background based on how much of the notification
		* shade is visible to the user. When the notification shade is completely open then
		* alpha value will be 1.
		*/
		private float getBackgroundAlpha(int height) {
		return mInitialBackgroundAlpha +
		((float) height / mNotificationView.getHeight() * mBackgroundAlphaDiff);
		}

		@Override
		public void onConfigChanged(Configuration newConfig) {
		super.onConfigChanged(newConfig);