Merge "Some improvements to home to overview transition for 0 button mode" into ub-launcher3-qt-dev

14 files changed, 227 insertions, 120 deletions

diff --git a/go/quickstep/src/com/android/launcher3/uioverrides/RecentsUiFactory.java b/go/quickstep/src/com/android/launcher3/uioverrides/RecentsUiFactory.java
index b5fefb46d..45822432f 100644
--- a/go/quickstep/src/com/android/launcher3/uioverrides/RecentsUiFactory.java
+++ b/go/quickstep/src/com/android/launcher3/uioverrides/RecentsUiFactory.java
@@ -16,11 +16,6 @@
 
 package com.android.launcher3.uioverrides;
 
-import static android.view.View.VISIBLE;
-import static com.android.launcher3.LauncherAnimUtils.SCALE_PROPERTY;
-
-import android.view.View;
-
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.Launcher;
 import com.android.launcher3.LauncherStateManager.StateHandler;
@@ -43,8 +38,6 @@ import java.util.ArrayList;
 public abstract class RecentsUiFactory {
 
     public static final boolean GO_LOW_RAM_RECENTS_ENABLED = true;
-    // Scale recents takes before animating in
-    private static final float RECENTS_PREPARE_SCALE = 1.33f;
 
     public static TouchController[] createTouchControllers(Launcher launcher) {
         ArrayList<TouchController> list = new ArrayList<>();
@@ -77,18 +70,6 @@ public abstract class RecentsUiFactory {
     }
 
     /**
-     * Prepare the recents view to animate in.
-     *
-     * @param launcher the launcher activity
-     */
-    public static void prepareToShowOverview(Launcher launcher) {
-        View overview = launcher.getOverviewPanel();
-        if (overview.getVisibility() != VISIBLE) {
-            SCALE_PROPERTY.set(overview, RECENTS_PREPARE_SCALE);
-        }
-    }
-
-    /**
      * Clean-up logic that occurs when recents is no longer in use/visible.
      *
      * @param launcher the launcher activity
diff --git a/go/quickstep/src/com/android/launcher3/uioverrides/states/OverviewState.java b/go/quickstep/src/com/android/launcher3/uioverrides/states/OverviewState.java
index 1b24fc856..d0cfcf97a 100644
--- a/go/quickstep/src/com/android/launcher3/uioverrides/states/OverviewState.java
+++ b/go/quickstep/src/com/android/launcher3/uioverrides/states/OverviewState.java
@@ -16,15 +16,31 @@
 
 package com.android.launcher3.uioverrides.states;
 
+import static android.view.View.VISIBLE;
+
 import static com.android.launcher3.LauncherAnimUtils.OVERVIEW_TRANSITION_MS;
+import static com.android.launcher3.LauncherAnimUtils.SCALE_PROPERTY;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_OVERVIEW_FADE;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_OVERVIEW_SCALE;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_OVERVIEW_TRANSLATE_X;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_WORKSPACE_FADE;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_WORKSPACE_SCALE;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_WORKSPACE_TRANSLATE;
+import static com.android.launcher3.anim.Interpolators.ACCEL;
 import static com.android.launcher3.anim.Interpolators.DEACCEL_2;
+import static com.android.launcher3.anim.Interpolators.OVERSHOOT_1_2;
+import static com.android.launcher3.anim.Interpolators.OVERSHOOT_1_7;
 import static com.android.launcher3.states.RotationHelper.REQUEST_ROTATE;
 
+import android.view.View;
+
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.Launcher;
 import com.android.launcher3.LauncherState;
 import com.android.launcher3.R;
+import com.android.launcher3.anim.AnimatorSetBuilder;
 import com.android.launcher3.userevent.nano.LauncherLogProto;
+import com.android.quickstep.SysUINavigationMode;
 import com.android.quickstep.views.IconRecentsView;
 
 /**
@@ -32,6 +48,9 @@ import com.android.quickstep.views.IconRecentsView;
  */
 public class OverviewState extends LauncherState {
 
+    // Scale recents takes before animating in
+    private static final float RECENTS_PREPARE_SCALE = 1.33f;
+
     private static final int STATE_FLAGS = FLAG_WORKSPACE_ICONS_CAN_BE_DRAGGED
             | FLAG_DISABLE_RESTORE | FLAG_OVERVIEW_UI | FLAG_DISABLE_ACCESSIBILITY;
 
@@ -103,6 +122,27 @@ public class OverviewState extends LauncherState {
         return dp.allAppsCellHeightPx - dp.allAppsIconTextSizePx;
     }
 
+    @Override
+    public void prepareForAtomicAnimation(Launcher launcher, LauncherState fromState,
+            AnimatorSetBuilder builder) {
+        if (fromState == NORMAL && this == OVERVIEW) {
+            if (SysUINavigationMode.getMode(launcher) == SysUINavigationMode.Mode.NO_BUTTON) {
+                builder.setInterpolator(ANIM_WORKSPACE_SCALE, ACCEL);
+                builder.setInterpolator(ANIM_WORKSPACE_TRANSLATE, ACCEL);
+            } else {
+                builder.setInterpolator(ANIM_WORKSPACE_SCALE, OVERSHOOT_1_2);
+            }
+            builder.setInterpolator(ANIM_WORKSPACE_FADE, OVERSHOOT_1_2);
+            builder.setInterpolator(ANIM_OVERVIEW_SCALE, OVERSHOOT_1_2);
+            builder.setInterpolator(ANIM_OVERVIEW_TRANSLATE_X, OVERSHOOT_1_7);
+            builder.setInterpolator(ANIM_OVERVIEW_FADE, OVERSHOOT_1_2);
+
+            View overview = launcher.getOverviewPanel();
+            if (overview.getVisibility() != VISIBLE) {
+                SCALE_PROPERTY.set(overview, RECENTS_PREPARE_SCALE);
+            }
+        }
+    }
 
     public static OverviewState newBackgroundState(int id) {
         return new OverviewState(id);
diff --git a/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/RecentsUiFactory.java b/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/RecentsUiFactory.java
index d84362c9f..8d5ac5094 100644
--- a/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/RecentsUiFactory.java
+++ b/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/RecentsUiFactory.java
@@ -16,8 +16,6 @@
 
 package com.android.launcher3.uioverrides;
 
-import static android.view.View.VISIBLE;
-import static com.android.launcher3.LauncherAnimUtils.SCALE_PROPERTY;
 import static com.android.launcher3.LauncherState.NORMAL;
 import static com.android.launcher3.LauncherState.OVERVIEW;
 import static com.android.quickstep.SysUINavigationMode.Mode.NO_BUTTON;
@@ -62,9 +60,6 @@ public abstract class RecentsUiFactory {
     private static final AsyncCommand SET_SHELF_HEIGHT_CMD = (visible, height) ->
             WindowManagerWrapper.getInstance().setShelfHeight(visible != 0, height);
 
-    // Scale recents takes before animating in
-    private static final float RECENTS_PREPARE_SCALE = 1.33f;
-
     public static RotationMode ROTATION_LANDSCAPE = new RotationMode(-90) {
         @Override
         public void mapRect(int left, int top, int right, int bottom, Rect out) {
@@ -189,22 +184,6 @@ public abstract class RecentsUiFactory {
     }
 
     /**
-     * Prepare the recents view to animate in.
-     *
-     * @param launcher the launcher activity
-     */
-    public static void prepareToShowOverview(Launcher launcher) {
-        if (SysUINavigationMode.getMode(launcher) == NO_BUTTON) {
-            // Overview lives on the side, so doesn't scale in from above.
-            return;
-        }
-        RecentsView overview = launcher.getOverviewPanel();
-        if (overview.getVisibility() != VISIBLE || overview.getContentAlpha() == 0) {
-            SCALE_PROPERTY.set(overview, RECENTS_PREPARE_SCALE);
-        }
-    }
-
-    /**
      * Recents logic that triggers when launcher state changes or launcher activity stops/resumes.
      *
      * @param launcher the launcher activity
diff --git a/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/states/OverviewPeekState.java b/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/states/OverviewPeekState.java
index bc1d4ba0c..c95476283 100644
--- a/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/states/OverviewPeekState.java
+++ b/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/states/OverviewPeekState.java
@@ -14,8 +14,15 @@
  * limitations under the License.
  */
 package com.android.launcher3.uioverrides.states;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_OVERVIEW_FADE;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_OVERVIEW_TRANSLATE_X;
+import static com.android.launcher3.anim.Interpolators.INSTANT;
+import static com.android.launcher3.anim.Interpolators.OVERSHOOT_1_7;
+
 import com.android.launcher3.Launcher;
+import com.android.launcher3.LauncherState;
 import com.android.launcher3.R;
+import com.android.launcher3.anim.AnimatorSetBuilder;
 
 public class OverviewPeekState extends OverviewState {
     public OverviewPeekState(int id) {
@@ -29,4 +36,13 @@ public class OverviewPeekState extends OverviewState {
                 - launcher.getResources().getDimension(R.dimen.overview_peek_distance);
         return result;
     }
+
+    @Override
+    public void prepareForAtomicAnimation(Launcher launcher, LauncherState fromState,
+            AnimatorSetBuilder builder) {
+        if (this == OVERVIEW_PEEK && fromState == NORMAL) {
+            builder.setInterpolator(ANIM_OVERVIEW_FADE, INSTANT);
+            builder.setInterpolator(ANIM_OVERVIEW_TRANSLATE_X, OVERSHOOT_1_7);
+        }
+    }
 }
diff --git a/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/states/OverviewState.java b/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/states/OverviewState.java
index 5c9b20096..5543860ee 100644
--- a/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/states/OverviewState.java
+++ b/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/states/OverviewState.java
@@ -15,8 +15,20 @@
  */
 package com.android.launcher3.uioverrides.states;
 
+import static android.view.View.VISIBLE;
+
 import static com.android.launcher3.LauncherAnimUtils.OVERVIEW_TRANSITION_MS;
+import static com.android.launcher3.LauncherAnimUtils.SCALE_PROPERTY;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_OVERVIEW_FADE;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_OVERVIEW_SCALE;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_OVERVIEW_TRANSLATE_X;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_WORKSPACE_FADE;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_WORKSPACE_SCALE;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_WORKSPACE_TRANSLATE;
+import static com.android.launcher3.anim.Interpolators.ACCEL;
 import static com.android.launcher3.anim.Interpolators.DEACCEL_2;
+import static com.android.launcher3.anim.Interpolators.OVERSHOOT_1_2;
+import static com.android.launcher3.anim.Interpolators.OVERSHOOT_1_7;
 import static com.android.launcher3.logging.LoggerUtils.newContainerTarget;
 import static com.android.launcher3.states.RotationHelper.REQUEST_ROTATE;
 
@@ -30,8 +42,11 @@ import com.android.launcher3.LauncherState;
 import com.android.launcher3.R;
 import com.android.launcher3.Workspace;
 import com.android.launcher3.allapps.DiscoveryBounce;
+import com.android.launcher3.anim.AnimatorSetBuilder;
+import com.android.launcher3.uioverrides.UiFactory;
 import com.android.launcher3.userevent.nano.LauncherLogProto.Action;
 import com.android.launcher3.userevent.nano.LauncherLogProto.ContainerType;
+import com.android.quickstep.SysUINavigationMode;
 import com.android.quickstep.views.RecentsView;
 import com.android.quickstep.views.TaskView;
 
@@ -40,6 +55,9 @@ import com.android.quickstep.views.TaskView;
  */
 public class OverviewState extends LauncherState {
 
+    // Scale recents takes before animating in
+    private static final float RECENTS_PREPARE_SCALE = 1.33f;
+
     protected static final Rect sTempRect = new Rect();
 
     private static final int STATE_FLAGS = FLAG_WORKSPACE_ICONS_CAN_BE_DRAGGED
@@ -160,6 +178,29 @@ public class OverviewState extends LauncherState {
         }
     }
 
+    @Override
+    public void prepareForAtomicAnimation(Launcher launcher, LauncherState fromState,
+            AnimatorSetBuilder builder) {
+        if (fromState == NORMAL && this == OVERVIEW) {
+            if (SysUINavigationMode.getMode(launcher) == SysUINavigationMode.Mode.NO_BUTTON) {
+                builder.setInterpolator(ANIM_WORKSPACE_SCALE, ACCEL);
+                builder.setInterpolator(ANIM_WORKSPACE_TRANSLATE, ACCEL);
+            } else {
+                builder.setInterpolator(ANIM_WORKSPACE_SCALE, OVERSHOOT_1_2);
+
+                // Scale up the recents, if it is not coming from the side
+                RecentsView overview = launcher.getOverviewPanel();
+                if (overview.getVisibility() != VISIBLE || overview.getContentAlpha() == 0) {
+                    SCALE_PROPERTY.set(overview, RECENTS_PREPARE_SCALE);
+                }
+            }
+            builder.setInterpolator(ANIM_WORKSPACE_FADE, OVERSHOOT_1_2);
+            builder.setInterpolator(ANIM_OVERVIEW_SCALE, OVERSHOOT_1_2);
+            builder.setInterpolator(ANIM_OVERVIEW_TRANSLATE_X, OVERSHOOT_1_7);
+            builder.setInterpolator(ANIM_OVERVIEW_FADE, OVERSHOOT_1_2);
+        }
+    }
+
     public static OverviewState newBackgroundState(int id) {
         return new BackgroundAppState(id);
     }
diff --git a/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/touchcontrollers/FlingAndHoldTouchController.java b/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/touchcontrollers/FlingAndHoldTouchController.java
index e3e339add..3fe4bcfd9 100644
--- a/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/touchcontrollers/FlingAndHoldTouchController.java
+++ b/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/touchcontrollers/FlingAndHoldTouchController.java
@@ -16,11 +16,20 @@
 
 package com.android.launcher3.uioverrides.touchcontrollers;
 
+import static com.android.launcher3.LauncherState.ALL_APPS;
+import static com.android.launcher3.LauncherState.HOTSEAT_ICONS;
 import static com.android.launcher3.LauncherState.NORMAL;
 import static com.android.launcher3.LauncherState.OVERVIEW;
 import static com.android.launcher3.LauncherState.OVERVIEW_PEEK;
 import static com.android.launcher3.LauncherStateManager.ANIM_ALL;
 import static com.android.launcher3.LauncherStateManager.ATOMIC_OVERVIEW_PEEK_COMPONENT;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_HOTSEAT_SCALE;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_HOTSEAT_TRANSLATE;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_VERTICAL_PROGRESS;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_WORKSPACE_FADE;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_WORKSPACE_SCALE;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_WORKSPACE_TRANSLATE;
+import static com.android.launcher3.anim.Interpolators.DEACCEL_3;
 import static com.android.launcher3.anim.Interpolators.OVERSHOOT_1_2;
 import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_OVERVIEW_DISABLED;
 
@@ -38,14 +47,14 @@ import com.android.launcher3.userevent.nano.LauncherLogProto.Action.Touch;
 import com.android.quickstep.OverviewInteractionState;
 import com.android.quickstep.util.MotionPauseDetector;
 import com.android.quickstep.views.RecentsView;
-import com.android.systemui.shared.system.QuickStepContract;
 
 /**
  * Touch controller which handles swipe and hold to go to Overview
  */
 public class FlingAndHoldTouchController extends PortraitStatesTouchController {
 
-    private static final long PEEK_ANIM_DURATION = 100;
+    private static final long PEEK_IN_ANIM_DURATION = 240;
+    private static final long PEEK_OUT_ANIM_DURATION = 100;
     private static final float MAX_DISPLACEMENT_PERCENT = 0.75f;
 
     private final MotionPauseDetector mMotionPauseDetector;
@@ -81,9 +90,9 @@ public class FlingAndHoldTouchController extends PortraitStatesTouchController {
                 }
                 LauncherState fromState = isPaused ? NORMAL : OVERVIEW_PEEK;
                 LauncherState toState = isPaused ? OVERVIEW_PEEK : NORMAL;
+                long peekDuration = isPaused ? PEEK_IN_ANIM_DURATION : PEEK_OUT_ANIM_DURATION;
                 mPeekAnim = mLauncher.getStateManager().createAtomicAnimation(fromState, toState,
-                        new AnimatorSetBuilder(), ATOMIC_OVERVIEW_PEEK_COMPONENT,
-                        PEEK_ANIM_DURATION);
+                        new AnimatorSetBuilder(), ATOMIC_OVERVIEW_PEEK_COMPONENT, peekDuration);
                 mPeekAnim.addListener(new AnimatorListenerAdapter() {
                     @Override
                     public void onAnimationEnd(Animator animation) {
@@ -107,6 +116,21 @@ public class FlingAndHoldTouchController extends PortraitStatesTouchController {
     }
 
     @Override
+    protected AnimatorSetBuilder getAnimatorSetBuilderForStates(LauncherState fromState,
+            LauncherState toState) {
+        if (fromState == NORMAL && toState == ALL_APPS) {
+            AnimatorSetBuilder builder = new AnimatorSetBuilder();
+
+            // Get workspace out of the way quickly, to prepare for potential pause.
+            builder.setInterpolator(ANIM_WORKSPACE_SCALE, DEACCEL_3);
+            builder.setInterpolator(ANIM_WORKSPACE_TRANSLATE, DEACCEL_3);
+            builder.setInterpolator(ANIM_WORKSPACE_FADE, DEACCEL_3);
+            return builder;
+        }
+        return super.getAnimatorSetBuilderForStates(fromState, toState);
+    }
+
+    @Override
     public boolean onDrag(float displacement, MotionEvent event) {
         float upDisplacement = -displacement;
         mMotionPauseDetector.setDisallowPause(upDisplacement < mMotionPauseMinDisplacement
@@ -123,8 +147,11 @@ public class FlingAndHoldTouchController extends PortraitStatesTouchController {
             }
 
             AnimatorSetBuilder builder = new AnimatorSetBuilder();
-            builder.setInterpolator(AnimatorSetBuilder.ANIM_VERTICAL_PROGRESS, OVERSHOOT_1_2);
-            builder.setInterpolator(AnimatorSetBuilder.ANIM_WORKSPACE_TRANSLATE, OVERSHOOT_1_2);
+            builder.setInterpolator(ANIM_VERTICAL_PROGRESS, OVERSHOOT_1_2);
+            if ((OVERVIEW.getVisibleElements(mLauncher) & HOTSEAT_ICONS) != 0) {
+                builder.setInterpolator(ANIM_HOTSEAT_SCALE, OVERSHOOT_1_2);
+                builder.setInterpolator(ANIM_HOTSEAT_TRANSLATE, OVERSHOOT_1_2);
+            }
             AnimatorSet overviewAnim = mLauncher.getStateManager().createAtomicAnimation(
                     NORMAL, OVERVIEW, builder, ANIM_ALL, ATOMIC_DURATION);
             overviewAnim.addListener(new AnimatorListenerAdapter() {
diff --git a/quickstep/res/values/dimens.xml b/quickstep/res/values/dimens.xml
index 82d1aa672..c7801a952 100644
--- a/quickstep/res/values/dimens.xml
+++ b/quickstep/res/values/dimens.xml
@@ -24,7 +24,7 @@
 
     <dimen name="recents_page_spacing">10dp</dimen>
     <dimen name="recents_clear_all_deadzone_vertical_margin">70dp</dimen>
-    <dimen name="overview_peek_distance">32dp</dimen>
+    <dimen name="overview_peek_distance">96dp</dimen>
 
     <!-- The speed in dp/s at which the user needs to be scrolling in recents such that we start
              loading full resolution screenshots. -->
diff --git a/quickstep/src/com/android/launcher3/uioverrides/states/AllAppsState.java b/quickstep/src/com/android/launcher3/uioverrides/states/AllAppsState.java
index ab24f5f5a..85a954507 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/states/AllAppsState.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/states/AllAppsState.java
@@ -23,6 +23,7 @@ import com.android.launcher3.Launcher;
 import com.android.launcher3.LauncherState;
 import com.android.launcher3.allapps.AllAppsContainerView;
 import com.android.launcher3.userevent.nano.LauncherLogProto.ContainerType;
+import com.android.quickstep.SysUINavigationMode;
 
 /**
  * Definition for AllApps state
@@ -63,7 +64,13 @@ public class AllAppsState extends LauncherState {
     public ScaleAndTranslation getWorkspaceScaleAndTranslation(Launcher launcher) {
         ScaleAndTranslation scaleAndTranslation = LauncherState.OVERVIEW
                 .getWorkspaceScaleAndTranslation(launcher);
-        scaleAndTranslation.scale = 1;
+        if (SysUINavigationMode.getMode(launcher) == SysUINavigationMode.Mode.NO_BUTTON) {
+            float normalScale = 1;
+            // Scale down halfway to where we'd be in overview, to prepare for a potential pause.
+            scaleAndTranslation.scale = (scaleAndTranslation.scale + normalScale) / 2;
+        } else {
+            scaleAndTranslation.scale = 1;
+        }
         return scaleAndTranslation;
     }
 
diff --git a/quickstep/src/com/android/quickstep/views/ShelfScrimView.java b/quickstep/src/com/android/quickstep/views/ShelfScrimView.java
index 36521e5cc..b6ddb5fd1 100644
--- a/quickstep/src/com/android/quickstep/views/ShelfScrimView.java
+++ b/quickstep/src/com/android/quickstep/views/ShelfScrimView.java
@@ -18,6 +18,7 @@ package com.android.quickstep.views;
 import static com.android.launcher3.LauncherState.BACKGROUND_APP;
 import static com.android.launcher3.LauncherState.OVERVIEW;
 import static com.android.launcher3.anim.Interpolators.ACCEL;
+import static com.android.launcher3.anim.Interpolators.ACCEL_2;
 import static com.android.launcher3.anim.Interpolators.LINEAR;
 import static com.android.launcher3.icons.GraphicsUtils.setColorAlphaBound;
 
@@ -29,6 +30,7 @@ import android.graphics.Path;
 import android.graphics.Path.Direction;
 import android.graphics.Path.Op;
 import android.util.AttributeSet;
+import android.view.animation.Interpolator;
 
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.R;
@@ -69,6 +71,9 @@ public class ShelfScrimView extends ScrimView implements NavigationModeChangeLis
     private int mMidAlpha;
     private float mMidProgress;
 
+    private Interpolator mBeforeMidProgressColorInterpolator = ACCEL;
+    private Interpolator mAfterMidProgressColorInterpolator = ACCEL;
+
     private float mShiftRange;
 
     private final float mShelfOffset;
@@ -120,6 +125,15 @@ public class ShelfScrimView extends ScrimView implements NavigationModeChangeLis
     @Override
     public void onNavigationModeChanged(Mode newMode) {
         mSysUINavigationMode = newMode;
+        // Note that these interpolators are inverted because progress goes 1 to 0.
+        if (mSysUINavigationMode == Mode.NO_BUTTON) {
+            // Show the shelf more quickly before reaching overview progress.
+            mBeforeMidProgressColorInterpolator = ACCEL_2;
+            mAfterMidProgressColorInterpolator = ACCEL;
+        } else {
+            mBeforeMidProgressColorInterpolator = ACCEL;
+            mAfterMidProgressColorInterpolator = Interpolators.clampToProgress(ACCEL, 0.5f, 1f);
+        }
     }
 
     @Override
@@ -171,7 +185,7 @@ public class ShelfScrimView extends ScrimView implements NavigationModeChangeLis
             mRemainingScreenColor = 0;
 
             int alpha = Math.round(Utilities.mapToRange(
-                    mProgress, mMidProgress, 1, mMidAlpha, 0, ACCEL));
+                    mProgress, mMidProgress, 1, mMidAlpha, 0, mBeforeMidProgressColorInterpolator));
             mShelfColor = setColorAlphaBound(mEndScrim, alpha);
         } else {
             mDragHandleOffset += mShiftRange * (mMidProgress - mProgress);
@@ -179,7 +193,7 @@ public class ShelfScrimView extends ScrimView implements NavigationModeChangeLis
             // Note that these ranges and interpolators are inverted because progress goes 1 to 0.
             int alpha = Math.round(
                     Utilities.mapToRange(mProgress, (float) 0, mMidProgress, (float) mEndAlpha,
-                            (float) mMidAlpha, Interpolators.clampToProgress(ACCEL, 0.5f, 1f)));
+                            (float) mMidAlpha, mAfterMidProgressColorInterpolator));
             mShelfColor = setColorAlphaBound(mEndScrim, alpha);
 
             int remainingScrimAlpha = Math.round(
diff --git a/src/com/android/launcher3/LauncherState.java b/src/com/android/launcher3/LauncherState.java
index 148064889..dcfd272b4 100644
--- a/src/com/android/launcher3/LauncherState.java
+++ b/src/com/android/launcher3/LauncherState.java
@@ -17,7 +17,18 @@ package com.android.launcher3;
 
 import static android.view.View.IMPORTANT_FOR_ACCESSIBILITY_AUTO;
 import static android.view.View.IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS;
+import static android.view.View.VISIBLE;
 import static android.view.accessibility.AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED;
+
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_OVERVIEW_FADE;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_OVERVIEW_SCALE;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_OVERVIEW_TRANSLATE_X;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_WORKSPACE_FADE;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_WORKSPACE_SCALE;
+import static com.android.launcher3.anim.Interpolators.ACCEL;
+import static com.android.launcher3.anim.Interpolators.DEACCEL;
+import static com.android.launcher3.anim.Interpolators.DEACCEL_1_7;
+import static com.android.launcher3.anim.Interpolators.clampToProgress;
 import static com.android.launcher3.testing.TestProtocol.ALL_APPS_STATE_ORDINAL;
 import static com.android.launcher3.testing.TestProtocol.BACKGROUND_APP_STATE_ORDINAL;
 import static com.android.launcher3.testing.TestProtocol.NORMAL_STATE_ORDINAL;
@@ -30,11 +41,11 @@ import static com.android.launcher3.states.RotationHelper.REQUEST_NONE;
 
 import android.view.animation.Interpolator;
 
+import com.android.launcher3.anim.AnimatorSetBuilder;
 import com.android.launcher3.states.SpringLoadedState;
 import com.android.launcher3.uioverrides.UiFactory;
 import com.android.launcher3.uioverrides.states.AllAppsState;
 import com.android.launcher3.uioverrides.states.OverviewState;
-import com.android.launcher3.userevent.nano.LauncherLogProto.Action;
 import com.android.launcher3.userevent.nano.LauncherLogProto.ContainerType;
 
 import java.util.Arrays;
@@ -272,6 +283,46 @@ public class LauncherState {
         }
     }
 
+    /**
+     * Prepares for a non-user controlled animation from fromState to this state. Preparations
+     * include:
+     * - Setting interpolators for various animations included in the state transition.
+     * - Setting some start values (e.g. scale) for views that are hidden but about to be shown.
+     */
+    public void prepareForAtomicAnimation(Launcher launcher, LauncherState fromState,
+            AnimatorSetBuilder builder) {
+        if (this == NORMAL && fromState == OVERVIEW) {
+            builder.setInterpolator(ANIM_WORKSPACE_SCALE, DEACCEL);
+            builder.setInterpolator(ANIM_WORKSPACE_FADE, ACCEL);
+            builder.setInterpolator(ANIM_OVERVIEW_SCALE, clampToProgress(ACCEL, 0, 0.9f));
+            builder.setInterpolator(ANIM_OVERVIEW_TRANSLATE_X, ACCEL);
+            builder.setInterpolator(ANIM_OVERVIEW_FADE, DEACCEL_1_7);
+            Workspace workspace = launcher.getWorkspace();
+
+            // Start from a higher workspace scale, but only if we're invisible so we don't jump.
+            boolean isWorkspaceVisible = workspace.getVisibility() == VISIBLE;
+            if (isWorkspaceVisible) {
+                CellLayout currentChild = (CellLayout) workspace.getChildAt(
+                        workspace.getCurrentPage());
+                isWorkspaceVisible = currentChild.getVisibility() == VISIBLE
+                        && currentChild.getShortcutsAndWidgets().getAlpha() > 0;
+            }
+            if (!isWorkspaceVisible) {
+                workspace.setScaleX(0.92f);
+                workspace.setScaleY(0.92f);
+            }
+            Hotseat hotseat = launcher.getHotseat();
+            boolean isHotseatVisible = hotseat.getVisibility() == VISIBLE && hotseat.getAlpha() > 0;
+            if (!isHotseatVisible) {
+                hotseat.setScaleX(0.92f);
+                hotseat.setScaleY(0.92f);
+            }
+        } else if (this == NORMAL && fromState == OVERVIEW_PEEK) {
+            // Keep fully visible until the very end (when overview is offscreen) to make invisible.
+            builder.setInterpolator(ANIM_OVERVIEW_FADE, t -> t < 1 ? 0 : 1);
+        }
+    }
+
     protected static void dispatchWindowStateChanged(Launcher launcher) {
         launcher.getWindow().getDecorView().sendAccessibilityEvent(TYPE_WINDOW_STATE_CHANGED);
     }
diff --git a/src/com/android/launcher3/LauncherStateManager.java b/src/com/android/launcher3/LauncherStateManager.java
index 4425e2af6..505918e09 100644
--- a/src/com/android/launcher3/LauncherStateManager.java
+++ b/src/com/android/launcher3/LauncherStateManager.java
@@ -16,23 +16,7 @@
 
 package com.android.launcher3;
 
-import static android.view.View.VISIBLE;
-
 import static com.android.launcher3.LauncherState.NORMAL;
-import static com.android.launcher3.LauncherState.OVERVIEW;
-import static com.android.launcher3.LauncherState.OVERVIEW_PEEK;
-import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_OVERVIEW_FADE;
-import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_OVERVIEW_SCALE;
-import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_OVERVIEW_TRANSLATE_X;
-import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_WORKSPACE_FADE;
-import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_WORKSPACE_SCALE;
-import static com.android.launcher3.anim.Interpolators.ACCEL;
-import static com.android.launcher3.anim.Interpolators.DEACCEL;
-import static com.android.launcher3.anim.Interpolators.DEACCEL_1_7;
-import static com.android.launcher3.anim.Interpolators.INSTANT;
-import static com.android.launcher3.anim.Interpolators.OVERSHOOT_1_2;
-import static com.android.launcher3.anim.Interpolators.OVERSHOOT_1_7;
-import static com.android.launcher3.anim.Interpolators.clampToProgress;
 import static com.android.launcher3.anim.PropertySetter.NO_ANIM_PROPERTY_SETTER;
 
 import android.animation.Animator;
@@ -42,8 +26,6 @@ import android.os.Handler;
 import android.os.Looper;
 import android.util.Log;
 
-import androidx.annotation.IntDef;
-
 import com.android.launcher3.anim.AnimationSuccessListener;
 import com.android.launcher3.anim.AnimatorPlaybackController;
 import com.android.launcher3.anim.AnimatorSetBuilder;
@@ -58,6 +40,8 @@ import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.util.ArrayList;
 
+import androidx.annotation.IntDef;
+
 /**
  * TODO: figure out what kind of tests we can write for this
  *
@@ -314,47 +298,7 @@ public class LauncherStateManager {
      */
     public void prepareForAtomicAnimation(LauncherState fromState, LauncherState toState,
             AnimatorSetBuilder builder) {
-        if (fromState == NORMAL && toState == OVERVIEW) {
-            builder.setInterpolator(ANIM_WORKSPACE_SCALE, OVERSHOOT_1_2);
-            builder.setInterpolator(ANIM_WORKSPACE_FADE, OVERSHOOT_1_2);
-            builder.setInterpolator(ANIM_OVERVIEW_SCALE, OVERSHOOT_1_2);
-            builder.setInterpolator(ANIM_OVERVIEW_TRANSLATE_X, OVERSHOOT_1_7);
-            builder.setInterpolator(ANIM_OVERVIEW_FADE, OVERSHOOT_1_2);
-
-            // Start from a higher overview scale, but only if we're invisible so we don't jump.
-            UiFactory.prepareToShowOverview(mLauncher);
-        } else if (fromState == OVERVIEW && toState == NORMAL) {
-            builder.setInterpolator(ANIM_WORKSPACE_SCALE, DEACCEL);
-            builder.setInterpolator(ANIM_WORKSPACE_FADE, ACCEL);
-            builder.setInterpolator(ANIM_OVERVIEW_SCALE, clampToProgress(ACCEL, 0, 0.9f));
-            builder.setInterpolator(ANIM_OVERVIEW_TRANSLATE_X, ACCEL);
-            builder.setInterpolator(ANIM_OVERVIEW_FADE, DEACCEL_1_7);
-            Workspace workspace = mLauncher.getWorkspace();
-
-            // Start from a higher workspace scale, but only if we're invisible so we don't jump.
-            boolean isWorkspaceVisible = workspace.getVisibility() == VISIBLE;
-            if (isWorkspaceVisible) {
-                CellLayout currentChild = (CellLayout) workspace.getChildAt(
-                        workspace.getCurrentPage());
-                isWorkspaceVisible = currentChild.getVisibility() == VISIBLE
-                        && currentChild.getShortcutsAndWidgets().getAlpha() > 0;
-            }
-            if (!isWorkspaceVisible) {
-                workspace.setScaleX(0.92f);
-                workspace.setScaleY(0.92f);
-            }
-            Hotseat hotseat = workspace.getHotseat();
-            boolean isHotseatVisible = hotseat.getVisibility() == VISIBLE && hotseat.getAlpha() > 0;
-            if (!isHotseatVisible) {
-                hotseat.setScaleX(0.92f);
-                hotseat.setScaleY(0.92f);
-            }
-        } else if (fromState == NORMAL && toState == OVERVIEW_PEEK) {
-            builder.setInterpolator(ANIM_OVERVIEW_FADE, INSTANT);
-        } else if (fromState == OVERVIEW_PEEK && toState == NORMAL) {
-            // Keep fully visible until the very end (when overview is offscreen) to make invisible.
-            builder.setInterpolator(ANIM_OVERVIEW_FADE, t -> t < 1 ? 0 : 1);
-        }
+        toState.prepareForAtomicAnimation(mLauncher, fromState, builder);
     }
 
     public AnimatorSet createAtomicAnimation(LauncherState fromState, LauncherState toState,
diff --git a/src/com/android/launcher3/WorkspaceStateTransitionAnimation.java b/src/com/android/launcher3/WorkspaceStateTransitionAnimation.java
index 065d06568..40c6b5f1b 100644
--- a/src/com/android/launcher3/WorkspaceStateTransitionAnimation.java
+++ b/src/com/android/launcher3/WorkspaceStateTransitionAnimation.java
@@ -19,6 +19,8 @@ package com.android.launcher3;
 import static com.android.launcher3.LauncherAnimUtils.DRAWABLE_ALPHA;
 import static com.android.launcher3.LauncherAnimUtils.SCALE_PROPERTY;
 import static com.android.launcher3.LauncherState.HOTSEAT_ICONS;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_HOTSEAT_SCALE;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_HOTSEAT_TRANSLATE;
 import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_WORKSPACE_FADE;
 import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_WORKSPACE_SCALE;
 import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_WORKSPACE_TRANSLATE;
@@ -104,7 +106,10 @@ public class WorkspaceStateTransitionAnimation {
                 hotseat.setPivotY(workspacePivot[1]);
             }
             float hotseatScale = hotseatScaleAndTranslation.scale;
-            propertySetter.setFloat(hotseat, SCALE_PROPERTY, hotseatScale, scaleInterpolator);
+            Interpolator hotseatScaleInterpolator = builder.getInterpolator(ANIM_HOTSEAT_SCALE,
+                    scaleInterpolator);
+            propertySetter.setFloat(hotseat, SCALE_PROPERTY, hotseatScale,
+                    hotseatScaleInterpolator);
 
             float hotseatIconsAlpha = (elements & HOTSEAT_ICONS) != 0 ? 1 : 0;
             propertySetter.setViewAlpha(hotseat, hotseatIconsAlpha, fadeInterpolator);
@@ -125,10 +130,12 @@ public class WorkspaceStateTransitionAnimation {
         propertySetter.setFloat(mWorkspace, View.TRANSLATION_Y,
                 scaleAndTranslation.translationY, translationInterpolator);
 
+        Interpolator hotseatTranslationInterpolator = builder.getInterpolator(
+                ANIM_HOTSEAT_TRANSLATE, translationInterpolator);
         propertySetter.setFloat(hotseat, View.TRANSLATION_Y,
-                hotseatScaleAndTranslation.translationY, translationInterpolator);
+                hotseatScaleAndTranslation.translationY, hotseatTranslationInterpolator);
         propertySetter.setFloat(mWorkspace.getPageIndicator(), View.TRANSLATION_Y,
-                hotseatScaleAndTranslation.translationY, translationInterpolator);
+                hotseatScaleAndTranslation.translationY, hotseatTranslationInterpolator);
 
         setScrim(propertySetter, state);
     }
diff --git a/src/com/android/launcher3/anim/AnimatorSetBuilder.java b/src/com/android/launcher3/anim/AnimatorSetBuilder.java
index 5c498f8bb..52a896eda 100644
--- a/src/com/android/launcher3/anim/AnimatorSetBuilder.java
+++ b/src/com/android/launcher3/anim/AnimatorSetBuilder.java
@@ -32,11 +32,13 @@ public class AnimatorSetBuilder {
     public static final int ANIM_WORKSPACE_SCALE = 1;
     public static final int ANIM_WORKSPACE_TRANSLATE = 2;
     public static final int ANIM_WORKSPACE_FADE = 3;
-    public static final int ANIM_OVERVIEW_SCALE = 4;
-    public static final int ANIM_OVERVIEW_TRANSLATE_X = 5;
-    public static final int ANIM_OVERVIEW_TRANSLATE_Y = 6;
-    public static final int ANIM_OVERVIEW_FADE = 7;
-    public static final int ANIM_ALL_APPS_FADE = 8;
+    public static final int ANIM_HOTSEAT_SCALE = 4;
+    public static final int ANIM_HOTSEAT_TRANSLATE = 5;
+    public static final int ANIM_OVERVIEW_SCALE = 6;
+    public static final int ANIM_OVERVIEW_TRANSLATE_X = 7;
+    public static final int ANIM_OVERVIEW_TRANSLATE_Y = 8;
+    public static final int ANIM_OVERVIEW_FADE = 9;
+    public static final int ANIM_ALL_APPS_FADE = 10;
 
     public static final int FLAG_DONT_ANIMATE_OVERVIEW = 1 << 0;
 
diff --git a/src_ui_overrides/com/android/launcher3/uioverrides/UiFactory.java b/src_ui_overrides/com/android/launcher3/uioverrides/UiFactory.java
index e41916cf4..17ff66e92 100644
--- a/src_ui_overrides/com/android/launcher3/uioverrides/UiFactory.java
+++ b/src_ui_overrides/com/android/launcher3/uioverrides/UiFactory.java
@@ -69,8 +69,6 @@ public class UiFactory {
         return false;
     }
 
-    public static void prepareToShowOverview(Launcher launcher) { }
-
     public static void setBackButtonAlpha(Launcher launcher, float alpha, boolean animate) { }