Snap for 7632648 from 148b33b552ecda668486b43f50fc70ca2353c18e to sc-v2-release

Change-Id: I50c9094ad345ce052b99b55ea27377f681c4ad75
diff --git a/quickstep/src/com/android/launcher3/statehandlers/DepthController.java b/quickstep/src/com/android/launcher3/statehandlers/DepthController.java
index aba16c2..85daeff 100644
--- a/quickstep/src/com/android/launcher3/statehandlers/DepthController.java
+++ b/quickstep/src/com/android/launcher3/statehandlers/DepthController.java
@@ -108,6 +108,13 @@
         }
     };
 
+    private final Runnable mOpaquenessListener = new Runnable() {
+        @Override
+        public void run() {
+            dispatchTransactionSurface(mDepth);
+        }
+    };
+
     private final Launcher mLauncher;
     /**
      * Blur radius when completely zoomed out, in pixels.
@@ -158,23 +165,28 @@
                     if (windowToken != null) {
                         mWallpaperManager.setWallpaperZoomOut(windowToken, mDepth);
                     }
-                    CrossWindowBlurListeners.getInstance().addListener(mLauncher.getMainExecutor(),
-                            mCrossWindowBlurListener);
+                    onAttached();
                 }
 
                 @Override
                 public void onViewDetachedFromWindow(View view) {
                     CrossWindowBlurListeners.getInstance().removeListener(mCrossWindowBlurListener);
+                    mLauncher.getScrimView().removeOpaquenessListener(mOpaquenessListener);
                 }
             };
             mLauncher.getRootView().addOnAttachStateChangeListener(mOnAttachListener);
             if (mLauncher.getRootView().isAttachedToWindow()) {
-                CrossWindowBlurListeners.getInstance().addListener(mLauncher.getMainExecutor(),
-                        mCrossWindowBlurListener);
+                onAttached();
             }
         }
     }
 
+    private void onAttached() {
+        CrossWindowBlurListeners.getInstance().addListener(mLauncher.getMainExecutor(),
+                mCrossWindowBlurListener);
+        mLauncher.getScrimView().addOpaquenessListener(mOpaquenessListener);
+    }
+
     /**
      * Sets if the underlying activity is started or not
      */
diff --git a/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java b/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java
index b5c834d..56c28f0 100644
--- a/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java
@@ -38,9 +38,9 @@
 import com.android.quickstep.RecentsAnimationCallbacks.RecentsAnimationListener;
 import com.android.quickstep.RecentsAnimationController;
 import com.android.quickstep.SystemUiProxy;
+import com.android.quickstep.views.RecentsView;
 import com.android.systemui.shared.recents.model.ThumbnailData;
 
-
 /**
  * A data source which integrates with a Launcher instance
  */
@@ -159,8 +159,7 @@
      *                 automatically reset once the recents animation finishes
      */
     public Animator createAnimToLauncher(@NonNull LauncherState toState,
-            @NonNull RecentsAnimationCallbacks callbacks,
-            long duration) {
+            @NonNull RecentsAnimationCallbacks callbacks, long duration) {
         TaskbarStashController stashController = mControllers.taskbarStashController;
         ObjectAnimator animator = mIconAlignmentForGestureState
                 .animateToValue(1)
@@ -180,31 +179,15 @@
                 stashController.animateToIsStashed(false, duration);
             }
         });
-        callbacks.addListener(new RecentsAnimationListener() {
-            @Override
-            public void onRecentsAnimationCanceled(ThumbnailData thumbnailData) {
-                endGestureStateOverride(true);
-            }
 
-            @Override
-            public void onRecentsAnimationFinished(RecentsAnimationController controller) {
-                endGestureStateOverride(!controller.getFinishTargetIsLauncher());
-            }
-
-            private void endGestureStateOverride(boolean finishedToApp) {
-                callbacks.removeListener(this);
-                mIsAnimatingToLauncherViaGesture = false;
-
-                mIconAlignmentForGestureState
-                        .animateToValue(0)
-                        .start();
-
-                if (finishedToApp) {
-                    // We only need this for the exiting live tile case.
-                    stashController.animateToIsStashed(stashController.isStashedInApp());
-                }
-            }
+        TaskBarRecentsAnimationListener listener = new TaskBarRecentsAnimationListener(callbacks);
+        callbacks.addListener(listener);
+        RecentsView recentsView = mLauncher.getOverviewPanel();
+        recentsView.setTaskLaunchListener(() -> {
+            listener.endGestureStateOverride(true);
+            callbacks.removeListener(listener);
         });
+
         return animator;
     }
 
@@ -249,4 +232,36 @@
         mIconAlphaForHome.setValue(isVisible ? 1 : 0);
         mLauncher.getHotseat().setIconsAlpha(isVisible ? 0f : 1f);
     }
+
+    private final class TaskBarRecentsAnimationListener implements RecentsAnimationListener {
+        private final RecentsAnimationCallbacks mCallbacks;
+
+        TaskBarRecentsAnimationListener(RecentsAnimationCallbacks callbacks) {
+            mCallbacks = callbacks;
+        }
+
+        @Override
+        public void onRecentsAnimationCanceled(ThumbnailData thumbnailData) {
+            endGestureStateOverride(true);
+        }
+
+        @Override
+        public void onRecentsAnimationFinished(RecentsAnimationController controller) {
+            endGestureStateOverride(!controller.getFinishTargetIsLauncher());
+        }
+
+        private void endGestureStateOverride(boolean finishedToApp) {
+            mCallbacks.removeListener(this);
+            mIsAnimatingToLauncherViaGesture = false;
+
+            mIconAlignmentForGestureState
+                    .animateToValue(0)
+                    .start();
+
+            TaskbarStashController controller = mControllers.taskbarStashController;
+            if (finishedToApp) {
+                controller.animateToIsStashed(controller.isStashedInApp());
+            }
+        }
+    }
 }
diff --git a/quickstep/src/com/android/quickstep/util/AnimatorControllerWithResistance.java b/quickstep/src/com/android/quickstep/util/AnimatorControllerWithResistance.java
index f1b4e3d..baca76c 100644
--- a/quickstep/src/com/android/quickstep/util/AnimatorControllerWithResistance.java
+++ b/quickstep/src/com/android/quickstep/util/AnimatorControllerWithResistance.java
@@ -48,15 +48,16 @@
 public class AnimatorControllerWithResistance {
 
     private enum RecentsResistanceParams {
-        FROM_APP(0.75f, 0.5f, 1f),
-        FROM_APP_TABLET(0.9f, 0.75f, 1f),
-        FROM_OVERVIEW(1f, 0.75f, 0.5f);
+        FROM_APP(0.75f, 0.5f, 1f, false),
+        FROM_APP_TABLET(1f, 0.7f, 1f, true),
+        FROM_OVERVIEW(1f, 0.75f, 0.5f, false);
 
         RecentsResistanceParams(float scaleStartResist, float scaleMaxResist,
-                float translationFactor) {
+                float translationFactor, boolean stopScalingAtTop) {
             this.scaleStartResist = scaleStartResist;
             this.scaleMaxResist = scaleMaxResist;
             this.translationFactor = translationFactor;
+            this.stopScalingAtTop = stopScalingAtTop;
         }
 
         /**
@@ -74,6 +75,12 @@
          * where 0 will keep it centered and 1 will have it barely touch the top of the screen.
          */
         public final float translationFactor;
+
+        /**
+         * Whether to end scaling effect when the scaled down version of TaskView's top reaches the
+         * non-scaled version of TaskView's top.
+         */
+        public final boolean stopScalingAtTop;
     }
 
     private static final TimeInterpolator RECENTS_SCALE_RESIST_INTERPOLATOR = DEACCEL;
@@ -161,26 +168,6 @@
         PointF pivot = new PointF();
         float fullscreenScale = params.recentsOrientedState.getFullScreenScaleAndPivot(
                 startRect, params.dp, pivot);
-        float prevScaleRate = (fullscreenScale - params.startScale)
-                / (params.dp.heightPx - startRect.bottom);
-        // This is what the scale would be at the end of the drag if we didn't apply resistance.
-        float endScale = params.startScale - prevScaleRate * distanceToCover;
-        // Create an interpolator that resists the scale so the scale doesn't get smaller than
-        // RECENTS_SCALE_MAX_RESIST.
-        float startResist = Utilities.getProgress(params.resistanceParams.scaleStartResist,
-                params.startScale, endScale);
-        float maxResist = Utilities.getProgress(params.resistanceParams.scaleMaxResist,
-                params.startScale, endScale);
-        final TimeInterpolator scaleInterpolator = t -> {
-            if (t < startResist) {
-                return t;
-            }
-            float resistProgress = Utilities.getProgress(t, startResist, 1);
-            resistProgress = RECENTS_SCALE_RESIST_INTERPOLATOR.getInterpolation(resistProgress);
-            return startResist + resistProgress * (maxResist - startResist);
-        };
-        resistAnim.addFloat(params.scaleTarget, params.scaleProperty, params.startScale, endScale,
-                scaleInterpolator);
 
         // Compute where the task view would be based on the end scale.
         RectF endRectF = new RectF(startRect);
@@ -195,6 +182,32 @@
         resistAnim.addFloat(params.translationTarget, params.translationProperty,
                 params.startTranslation, endTranslation, RECENTS_TRANSLATE_RESIST_INTERPOLATOR);
 
+        float prevScaleRate = (fullscreenScale - params.startScale)
+                / (params.dp.heightPx - startRect.bottom);
+        // This is what the scale would be at the end of the drag if we didn't apply resistance.
+        float endScale = params.startScale - prevScaleRate * distanceToCover;
+        // Create an interpolator that resists the scale so the scale doesn't get smaller than
+        // RECENTS_SCALE_MAX_RESIST.
+        float startResist = Utilities.getProgress(params.resistanceParams.scaleStartResist,
+                params.startScale, endScale);
+        float maxResist = Utilities.getProgress(params.resistanceParams.scaleMaxResist,
+                params.startScale, endScale);
+        float stopResist =
+                params.resistanceParams.stopScalingAtTop ? 1f - startRect.top / endRectF.top : 1f;
+        final TimeInterpolator scaleInterpolator = t -> {
+            if (t < startResist) {
+                return t;
+            }
+            if (t > stopResist) {
+                return maxResist;
+            }
+            float resistProgress = Utilities.getProgress(t, startResist, stopResist);
+            resistProgress = RECENTS_SCALE_RESIST_INTERPOLATOR.getInterpolation(resistProgress);
+            return startResist + resistProgress * (maxResist - startResist);
+        };
+        resistAnim.addFloat(params.scaleTarget, params.scaleProperty, params.startScale, endScale,
+                scaleInterpolator);
+
         return resistAnim;
     }
 
diff --git a/quickstep/src/com/android/quickstep/views/RecentsView.java b/quickstep/src/com/android/quickstep/views/RecentsView.java
index 935305a..3aed7cc 100644
--- a/quickstep/src/com/android/quickstep/views/RecentsView.java
+++ b/quickstep/src/com/android/quickstep/views/RecentsView.java
@@ -602,6 +602,7 @@
             };
 
     private RunnableList mSideTaskLaunchCallback;
+    private TaskLaunchListener mTaskLaunchListener;
 
     public RecentsView(Context context, AttributeSet attrs, int defStyleAttr,
             BaseActivityInterface sizeStrategy) {
@@ -882,6 +883,21 @@
         mSideTaskLaunchCallback.add(callback::executeAllAndDestroy);
     }
 
+    /**
+     * This is a one-time callback when touching in live tile mode. It's reset to null right
+     * after it's called.
+     */
+    public void setTaskLaunchListener(TaskLaunchListener taskLaunchListener) {
+        mTaskLaunchListener = taskLaunchListener;
+    }
+
+    public void onTaskLaunchedInLiveTileMode() {
+        if (mTaskLaunchListener != null) {
+            mTaskLaunchListener.onTaskLaunched();
+            mTaskLaunchListener = null;
+        }
+    }
+
     private void executeSideTaskLaunchCallback() {
         if (mSideTaskLaunchCallback != null) {
             mSideTaskLaunchCallback.executeAllAndDestroy();
@@ -1172,7 +1188,7 @@
         mMovingTaskView = focusedTaskView;
         removeView(focusedTaskView);
         mMovingTaskView = null;
-        focusedTaskView.onRecycle();
+        focusedTaskView.resetPersistentViewTransforms();
         addView(focusedTaskView, mTaskViewStartIndex);
         setCurrentPage(mTaskViewStartIndex);
 
@@ -4210,4 +4226,8 @@
         // Set locus context is a binder call, don't want it to happen during a transition
         UI_HELPER_EXECUTOR.post(() -> mActivity.setLocusContext(id, Bundle.EMPTY));
     }
+
+    public interface TaskLaunchListener {
+        void onTaskLaunched();
+    }
 }
diff --git a/quickstep/src/com/android/quickstep/views/TaskView.java b/quickstep/src/com/android/quickstep/views/TaskView.java
index 02c5d84..2c33b6d 100644
--- a/quickstep/src/com/android/quickstep/views/TaskView.java
+++ b/quickstep/src/com/android/quickstep/views/TaskView.java
@@ -584,6 +584,7 @@
                 }
             });
             anim.start();
+            recentsView.onTaskLaunchedInLiveTileMode();
         } else {
             launchTaskAnimated();
         }
@@ -614,12 +615,14 @@
             ActivityOptionsWrapper opts =  mActivity.getActivityLaunchOptions(this, null);
             if (ActivityManagerWrapper.getInstance()
                     .startActivityFromRecents(mTask.key, opts.options)) {
-                if (ENABLE_QUICKSTEP_LIVE_TILE.get() &&
-                        getRecentsView().getRunningTaskViewId() != -1) {
+                RecentsView recentsView = getRecentsView();
+                if (ENABLE_QUICKSTEP_LIVE_TILE.get() && recentsView.getRunningTaskViewId() != -1) {
+                    recentsView.onTaskLaunchedInLiveTileMode();
+
                     // Return a fresh callback in the live tile case, so that it's not accidentally
                     // triggered by QuickstepTransitionManager.AppLaunchAnimationRunner.
                     RunnableList callbackList = new RunnableList();
-                    getRecentsView().addSideTaskLaunchCallback(callbackList);
+                    recentsView.addSideTaskLaunchCallback(callbackList);
                     return callbackList;
                 }
                 return opts.onEndCallback;
@@ -871,6 +874,12 @@
         setIconAndDimTransitionProgress(iconScale, invert);
     }
 
+    protected void resetPersistentViewTransforms() {
+        mNonGridTranslationX = mNonGridTranslationY =
+                mGridTranslationX = mGridTranslationY = mBoxTranslationY = 0f;
+        resetViewTransforms();
+    }
+
     protected void resetViewTransforms() {
         // fullscreenTranslation and accumulatedTranslation should not be reset, as
         // resetViewTransforms is called during Quickswitch scrolling.
@@ -894,9 +903,7 @@
 
     @Override
     public void onRecycle() {
-        mNonGridTranslationX = mNonGridTranslationY =
-                mGridTranslationX = mGridTranslationY = mBoxTranslationY = 0f;
-        resetViewTransforms();
+        resetPersistentViewTransforms();
         // Clear any references to the thumbnail (it will be re-read either from the cache or the
         // system on next bind)
         mSnapshotView.setThumbnail(mTask, null);
diff --git a/src/com/android/launcher3/views/ScrimView.java b/src/com/android/launcher3/views/ScrimView.java
index 1eb79ad..4c0bfde 100644
--- a/src/com/android/launcher3/views/ScrimView.java
+++ b/src/com/android/launcher3/views/ScrimView.java
@@ -25,23 +25,27 @@
 import android.util.AttributeSet;
 import android.view.View;
 
+import androidx.annotation.NonNull;
 import androidx.core.graphics.ColorUtils;
 
 import com.android.launcher3.BaseActivity;
 import com.android.launcher3.Insettable;
 import com.android.launcher3.util.SystemUiController;
 
+import java.util.ArrayList;
+
 /**
  * Simple scrim which draws a flat color
  */
 public class ScrimView extends View implements Insettable {
     private static final float STATUS_BAR_COLOR_FORCE_UPDATE_THRESHOLD = 0.9f;
 
+    private final ArrayList<Runnable> mOpaquenessListeners = new ArrayList<>(1);
     private SystemUiController mSystemUiController;
-
     private ScrimDrawingController mDrawingController;
     private int mBackgroundColor;
     private boolean mIsVisible = true;
+    private boolean mLastDispatchedOpaqueness;
 
     public ScrimView(Context context, AttributeSet attrs) {
         super(context, attrs);
@@ -60,6 +64,7 @@
     @Override
     protected boolean onSetAlpha(int alpha) {
         updateSysUiColors();
+        dispatchVisibilityListenersIfNeeded();
         return super.onSetAlpha(alpha);
     }
 
@@ -67,6 +72,7 @@
     public void setBackgroundColor(int color) {
         mBackgroundColor = color;
         updateSysUiColors();
+        dispatchVisibilityListenersIfNeeded();
         super.setBackgroundColor(color);
     }
 
@@ -74,6 +80,7 @@
     public void onVisibilityAggregated(boolean isVisible) {
         super.onVisibilityAggregated(isVisible);
         mIsVisible = isVisible;
+        dispatchVisibilityListenersIfNeeded();
     }
 
     public boolean isFullyOpaque() {
@@ -108,6 +115,17 @@
         }
     }
 
+    private void dispatchVisibilityListenersIfNeeded() {
+        boolean fullyOpaque = isFullyOpaque();
+        if (mLastDispatchedOpaqueness == fullyOpaque) {
+            return;
+        }
+        mLastDispatchedOpaqueness = fullyOpaque;
+        for (int i = 0; i < mOpaquenessListeners.size(); i++) {
+            mOpaquenessListeners.get(i).run();
+        }
+    }
+
     private SystemUiController getSystemUiController() {
         if (mSystemUiController == null) {
             mSystemUiController = BaseActivity.fromContext(getContext()).getSystemUiController();
@@ -136,6 +154,22 @@
     }
 
     /**
+     * Registers a listener to be notified of whether the scrim is occluding other UI elements.
+     * @see #isFullyOpaque()
+     */
+    public void addOpaquenessListener(@NonNull Runnable listener) {
+        mOpaquenessListeners.add(listener);
+    }
+
+    /**
+     * Removes previously registered listener.
+     * @see #addOpaquenessListener(Runnable)
+     */
+    public void removeOpaquenessListener(@NonNull Runnable listener) {
+        mOpaquenessListeners.remove(listener);
+    }
+
+    /**
      * A Utility interface allowing for other surfaces to draw on ScrimView
      */
     public interface ScrimDrawingController {
diff --git a/src/com/android/launcher3/widget/WidgetCell.java b/src/com/android/launcher3/widget/WidgetCell.java
index 167eb09..a8ed154 100644
--- a/src/com/android/launcher3/widget/WidgetCell.java
+++ b/src/com/android/launcher3/widget/WidgetCell.java
@@ -325,10 +325,10 @@
             return;
         }
         if (drawable != null) {
+            // Scale down the preview size if it's wider than the cell.
             float scale = 1f;
-            if (getWidth() > 0 && getHeight() > 0) {
-                // Scale down the preview size if it's wider than the cell.
-                float maxWidth = getWidth();
+            if (mTargetPreviewWidth > 0) {
+                float maxWidth = mTargetPreviewWidth;
                 float previewWidth = drawable.getIntrinsicWidth() * mPreviewContainerScale;
                 scale = Math.min(maxWidth / previewWidth, 1);
             }