Merge "Vary opacity based on number of tasks." into oc-dr1-dev (8c3e8309) · Commits · e / os / android_frameworks_base

packages/SystemUI/src/com/android/systemui/recents/RecentsActivity.java

+6 −2

Original line number	Diff line number	Diff line
		@@ -72,6 +72,7 @@ import com.android.systemui.recents.events.ui.RecentsDrawnEvent;
		import com.android.systemui.recents.events.ui.ShowApplicationInfoEvent;
		import com.android.systemui.recents.events.ui.ShowIncompatibleAppOverlayEvent;
		import com.android.systemui.recents.events.ui.StackViewScrolledEvent;
		import com.android.systemui.recents.events.ui.TaskViewDismissedEvent;
		import com.android.systemui.recents.events.ui.UpdateFreeformTaskViewVisibilityEvent;
		import com.android.systemui.recents.events.ui.UserInteractionEvent;
		import com.android.systemui.recents.events.ui.focus.DismissFocusedTaskViewEvent;
		@@ -420,8 +421,7 @@ public class RecentsActivity extends Activity implements ViewTreeObserver.OnPreD
		loadOpts.numVisibleTaskThumbnails = launchState.launchedNumVisibleThumbnails;
		loader.loadTasks(this, loadPlan, loadOpts);
		TaskStack stack = loadPlan.getTaskStack();
		mRecentsView.onReload(mIsVisible, stack.getTaskCount() == 0);
		mRecentsView.updateStack(stack, true /* setStackViewTasks */);
		mRecentsView.onReload(stack, mIsVisible);

		// Update the nav bar scrim, but defer the animation until the enter-window event
		boolean animateNavBarScrim = !launchState.launchedViaDockGesture;
		@@ -755,6 +755,10 @@ public class RecentsActivity extends Activity implements ViewTreeObserver.OnPreD
		ssp.removeTask(event.task.key.id);
		}

		public final void onBusEvent(TaskViewDismissedEvent event) {
		mRecentsView.updateScrimOpacity();
		}

		public final void onBusEvent(AllTaskViewsDismissedEvent event) {
		SystemServicesProxy ssp = Recents.getSystemServices();
		if (ssp.hasDockedTask()) {

packages/SystemUI/src/com/android/systemui/recents/views/RecentsView.java

+56 −13

Original line number	Diff line number	Diff line
		@@ -31,6 +31,7 @@ import android.graphics.drawable.ColorDrawable;
		import android.graphics.drawable.Drawable;
		import android.util.ArraySet;
		import android.util.AttributeSet;
		import android.util.MathUtils;
		import android.view.AppTransitionAnimationSpec;
		import android.view.LayoutInflater;
		import android.view.MotionEvent;
		@@ -79,6 +80,7 @@ import com.android.systemui.recents.views.RecentsTransitionHelper.AnimationSpecC
		import com.android.systemui.recents.views.RecentsTransitionHelper.AppTransitionAnimationSpecsFuture;
		import com.android.systemui.stackdivider.WindowManagerProxy;
		import com.android.systemui.statusbar.FlingAnimationUtils;
		import com.android.systemui.statusbar.phone.ScrimController;

		import com.google.android.colorextraction.ColorExtractor;
		import com.google.android.colorextraction.drawable.GradientDrawable;
		@@ -96,11 +98,12 @@ public class RecentsView extends FrameLayout implements ColorExtractor.OnColorsC
		private static final String TAG = "RecentsView";

		private static final int DEFAULT_UPDATE_SCRIM_DURATION = 200;
		private static final float DEFAULT_SCRIM_ALPHA = 0.8f;

		private static final int SHOW_STACK_ACTION_BUTTON_DURATION = 134;
		private static final int HIDE_STACK_ACTION_BUTTON_DURATION = 100;

		private static final int BUSY_RECENTS_TASK_COUNT = 3;

		private TaskStackView mTaskStackView;
		private TextView mStackActionButton;
		private TextView mEmptyView;
		@@ -112,7 +115,7 @@ public class RecentsView extends FrameLayout implements ColorExtractor.OnColorsC
		Rect mSystemInsets = new Rect();
		private int mDividerSize;

		private final float mScrimAlpha;
		private float mBusynessFactor;
		private GradientDrawable mBackgroundScrim;
		private final SysuiColorExtractor mColorExtractor;
		private Animator mBackgroundScrimAnimator;
		@@ -143,10 +146,8 @@ public class RecentsView extends FrameLayout implements ColorExtractor.OnColorsC
		mDividerSize = ssp.getDockedDividerSize(context);
		mTouchHandler = new RecentsViewTouchHandler(this);
		mFlingAnimationUtils = new FlingAnimationUtils(context, 0.3f);
		mScrimAlpha = DEFAULT_SCRIM_ALPHA;
		mBackgroundScrim = new GradientDrawable(context);
		mBackgroundScrim.setCallback(this);
		mBackgroundScrim.setAlpha((int) (mScrimAlpha * 255));
		mColorExtractor = Dependency.get(SysuiColorExtractor.class);

		LayoutInflater inflater = LayoutInflater.from(context);
		@@ -168,9 +169,10 @@ public class RecentsView extends FrameLayout implements ColorExtractor.OnColorsC
		/**
		* Called from RecentsActivity when it is relaunched.
		*/
		public void onReload(boolean isResumingFromVisible, boolean isTaskStackEmpty) {
		RecentsConfiguration config = Recents.getConfiguration();
		RecentsActivityLaunchState launchState = config.getLaunchState();
		public void onReload(TaskStack stack, boolean isResumingFromVisible) {
		final RecentsConfiguration config = Recents.getConfiguration();
		final RecentsActivityLaunchState launchState = config.getLaunchState();
		final boolean isTaskStackEmpty = stack.getTaskCount() == 0;

		if (mTaskStackView == null) {
		isResumingFromVisible = false;
		@@ -185,17 +187,19 @@ public class RecentsView extends FrameLayout implements ColorExtractor.OnColorsC

		// Update the stack
		mTaskStackView.onReload(isResumingFromVisible);
		updateStack(stack, true /* setStackViewTasks */);
		updateBusyness();

		if (isResumingFromVisible) {
		// If we are already visible, then restore the background scrim
		animateBackgroundScrim(1f, DEFAULT_UPDATE_SCRIM_DURATION);
		animateBackgroundScrim(getOpaqueScrimAlpha(), DEFAULT_UPDATE_SCRIM_DURATION);
		} else {
		// If we are already occluded by the app, then set the final background scrim alpha now.
		// Otherwise, defer until the enter animation completes to animate the scrim alpha with
		// the tasks for the home animation.
		if (launchState.launchedViaDockGesture \|\| launchState.launchedFromApp
		\|\| isTaskStackEmpty) {
		mBackgroundScrim.setAlpha((int) (mScrimAlpha * 255));
		mBackgroundScrim.setAlpha((int) (getOpaqueScrimAlpha() * 255));
		} else {
		mBackgroundScrim.setAlpha(0);
		}
		@@ -218,6 +222,33 @@ public class RecentsView extends FrameLayout implements ColorExtractor.OnColorsC
		}
		}

		/**
		* Animates the scrim opacity based on how many tasks are visible.
		* Called from {@link RecentsActivity} when tasks are dismissed.
		*/
		public void updateScrimOpacity() {
		if (updateBusyness()) {
		animateBackgroundScrim(getOpaqueScrimAlpha(), DEFAULT_UPDATE_SCRIM_DURATION);
		}
		}

		/**
		* Updates the busyness factor.
		*
		* @return True if it changed.
		*/
		private boolean updateBusyness() {
		final int taskCount = mTaskStackView.getStack().getStackTaskCount();
		final float busyness = Math.min(taskCount, BUSY_RECENTS_TASK_COUNT)
		/ (float) BUSY_RECENTS_TASK_COUNT;
		if (mBusynessFactor == busyness) {
		return false;
		} else {
		mBusynessFactor = busyness;
		return true;
		}
		}

		/**
		* Returns the current TaskStack.
		*/
		@@ -225,7 +256,7 @@ public class RecentsView extends FrameLayout implements ColorExtractor.OnColorsC
		return mTaskStackView.getStack();
		}

		/*
		/**
		* Returns the window background scrim.
		*/
		public Drawable getBackgroundScrim() {
		@@ -619,7 +650,7 @@ public class RecentsView extends FrameLayout implements ColorExtractor.OnColorsC
		RecentsActivityLaunchState launchState = Recents.getConfiguration().getLaunchState();
		if (!launchState.launchedViaDockGesture && !launchState.launchedFromApp
		&& getStack().getTaskCount() > 0) {
		animateBackgroundScrim(1f,
		animateBackgroundScrim(getOpaqueScrimAlpha(),
		TaskStackAnimationHelper.ENTER_FROM_HOME_TRANSLATION_DURATION);
		}
		}
		@@ -778,14 +809,26 @@ public class RecentsView extends FrameLayout implements ColorExtractor.OnColorsC
		}
		}

		/**
		* Scrim alpha based on how busy recents is:
		* Scrim will be {@link ScrimController#GRADIENT_SCRIM_ALPHA} when the stack is empty,
		* and {@link ScrimController#GRADIENT_SCRIM_ALPHA_BUSY} when it's full.
		*
		* @return Alpha from 0 to 1.
		*/
		private float getOpaqueScrimAlpha() {
		return MathUtils.map(0, 1, ScrimController.GRADIENT_SCRIM_ALPHA,
		ScrimController.GRADIENT_SCRIM_ALPHA_BUSY, mBusynessFactor);
		}

		/**
		* Animates the background scrim to the given {@param alpha}.
		*/
		private void animateBackgroundScrim(float alpha, int duration) {
		Utilities.cancelAnimationWithoutCallbacks(mBackgroundScrimAnimator);
		// Calculate the absolute alpha to animate from
		int fromAlpha = mBackgroundScrim.getAlpha();
		int toAlpha = (int) (alpha * mScrimAlpha * 255);
		final int fromAlpha = mBackgroundScrim.getAlpha();
		final int toAlpha = (int) (alpha * 255);
		mBackgroundScrimAnimator = ObjectAnimator.ofInt(mBackgroundScrim, Utilities.DRAWABLE_ALPHA,
		fromAlpha, toAlpha);
		mBackgroundScrimAnimator.setDuration(duration);

packages/SystemUI/src/com/android/systemui/statusbar/phone/ScrimController.java

+1 −1

Original line number	Diff line number	Diff line
		@@ -58,7 +58,7 @@ public class ScrimController implements ViewTreeObserver.OnPreDrawListener,
		public static final Interpolator KEYGUARD_FADE_OUT_INTERPOLATOR_LOCKED
		= new PathInterpolator(0.3f, 0f, 0.8f, 1f);
		// Default alpha value for most scrims, if unsure use this constant
		public static final float GRADIENT_SCRIM_ALPHA = 0.60f;
		public static final float GRADIENT_SCRIM_ALPHA = 0.45f;
		// A scrim varies its opacity based on a busyness factor, for example
		// how many notifications are currently visible.
		public static final float GRADIENT_SCRIM_ALPHA_BUSY = 0.90f;