Add QuickSwitchTouchController on home

- Added QuickSwitchState, which we animate to when swiping right
  on the nav bar from NORMAL state
- Task launches when the state transition to QuickSwitchState ends

Bug: 126596417
Change-Id: Id66650401d817703fc6d044fb26a25cccbc07e11

15 files changed, 304 insertions, 28 deletions

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 eba7f5f22..6730e975e 100644
--- a/go/quickstep/src/com/android/launcher3/uioverrides/states/OverviewState.java
+++ b/go/quickstep/src/com/android/launcher3/uioverrides/states/OverviewState.java
@@ -100,4 +100,8 @@ public class OverviewState extends LauncherState {
     public static OverviewState newPeekState(int id) {
         return new OverviewState(id);
     }
+
+    public static OverviewState newSwitchState(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 f5702a73c..d0a2f2716 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
@@ -34,6 +34,7 @@ import com.android.launcher3.uioverrides.touchcontrollers.LandscapeEdgeSwipeCont
 import com.android.launcher3.uioverrides.touchcontrollers.OverviewToAllAppsTouchController;
 import com.android.launcher3.uioverrides.touchcontrollers.PortraitStatesTouchController;
 import com.android.launcher3.uioverrides.touchcontrollers.StatusBarTouchController;
+import com.android.launcher3.uioverrides.touchcontrollers.QuickSwitchTouchController;
 import com.android.launcher3.uioverrides.touchcontrollers.TaskViewTouchController;
 import com.android.launcher3.util.TouchController;
 import com.android.launcher3.util.UiThreadHelper;
@@ -66,6 +67,7 @@ public abstract class RecentsUiFactory {
         list.add(launcher.getDragController());
 
         if (swipeUpToHome) {
+            list.add(new QuickSwitchTouchController(launcher));
             list.add(new FlingAndHoldTouchController(launcher));
         } else {
             if (launcher.getDeviceProfile().isVerticalBarLayout()) {
@@ -74,6 +76,9 @@ public abstract class RecentsUiFactory {
             } else {
                 list.add(new PortraitStatesTouchController(launcher,
                         swipeUpEnabled /* allowDragToOverview */));
+                if (swipeUpEnabled) {
+                    list.add(new QuickSwitchTouchController(launcher));
+                }
             }
         }
 
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 2294d6721..94c154574 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
@@ -18,6 +18,7 @@ package com.android.launcher3.uioverrides.states;
 import static com.android.launcher3.LauncherAnimUtils.OVERVIEW_TRANSITION_MS;
 import static com.android.launcher3.anim.Interpolators.DEACCEL_2;
 import static com.android.launcher3.config.FeatureFlags.ENABLE_QUICKSTEP_LIVE_TILE;
+import static com.android.launcher3.logging.LoggerUtils.getTargetStr;
 import static com.android.launcher3.logging.LoggerUtils.newContainerTarget;
 import static com.android.launcher3.states.RotationHelper.REQUEST_ROTATE;
 
@@ -52,7 +53,11 @@ public class OverviewState extends LauncherState {
     }
 
     protected OverviewState(int id, int transitionDuration, int stateFlags) {
-        super(id, ContainerType.TASKSWITCHER, transitionDuration, stateFlags);
+        this(id, ContainerType.TASKSWITCHER, transitionDuration, stateFlags);
+    }
+
+    protected OverviewState(int id, int logContainer, int transitionDuration, int stateFlags) {
+        super(id, logContainer, transitionDuration, stateFlags);
     }
 
     @Override
@@ -92,6 +97,7 @@ public class OverviewState extends LauncherState {
         DiscoveryBounce.showForOverviewIfNeeded(launcher);
     }
 
+    @Override
     public PageAlphaProvider getWorkspacePageAlphaProvider(Launcher launcher) {
         return new PageAlphaProvider(DEACCEL_2) {
             @Override
@@ -159,4 +165,8 @@ public class OverviewState extends LauncherState {
     public static OverviewState newPeekState(int id) {
         return new OverviewPeekState(id);
     }
+
+    public static OverviewState newSwitchState(int id) {
+        return new QuickSwitchState(id);
+    }
 }
diff --git a/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/states/QuickSwitchState.java b/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/states/QuickSwitchState.java
new file mode 100644
index 000000000..fa07e27a9
--- /dev/null
+++ b/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/states/QuickSwitchState.java
@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.launcher3.uioverrides.states;
+
+import static com.android.launcher3.LauncherAnimUtils.OVERVIEW_TRANSITION_MS;
+
+import android.graphics.Rect;
+
+import com.android.launcher3.Launcher;
+import com.android.launcher3.userevent.nano.LauncherLogProto;
+import com.android.quickstep.util.ClipAnimationHelper;
+import com.android.quickstep.views.RecentsView;
+import com.android.quickstep.views.TaskThumbnailView;
+import com.android.quickstep.views.TaskView;
+
+/**
+ * State to indicate we are about to launch a recent task. Note that this state is only used when
+ * quick switching from launcher; quick switching from an app uses WindowTransformSwipeHelper.
+ * @see com.android.quickstep.WindowTransformSwipeHandler.GestureEndTarget#NEW_TASK
+ */
+public class QuickSwitchState extends OverviewState {
+    private static final int STATE_FLAGS =
+            FLAG_DISABLE_RESTORE | FLAG_OVERVIEW_UI | FLAG_DISABLE_ACCESSIBILITY;
+
+    public QuickSwitchState(int id) {
+        super(id, LauncherLogProto.ContainerType.APP, OVERVIEW_TRANSITION_MS, STATE_FLAGS);
+    }
+
+    @Override
+    public ScaleAndTranslation getOverviewScaleAndTranslation(Launcher launcher) {
+        RecentsView recentsView = launcher.getOverviewPanel();
+        if (recentsView.getTaskViewCount() == 0) {
+            return super.getOverviewScaleAndTranslation(launcher);
+        }
+        // Compute scale and translation y such that the most recent task view fills the screen.
+        TaskThumbnailView dummyThumbnail = recentsView.getTaskViewAt(0).getThumbnail();
+        ClipAnimationHelper clipAnimationHelper = new ClipAnimationHelper(launcher);
+        clipAnimationHelper.fromTaskThumbnailView(dummyThumbnail, recentsView);
+        Rect targetRect = new Rect();
+        recentsView.getTaskSize(targetRect);
+        clipAnimationHelper.updateTargetRect(targetRect);
+        float toScale = clipAnimationHelper.getSourceRect().width()
+                / clipAnimationHelper.getTargetRect().width();
+        float toTranslationY = clipAnimationHelper.getSourceRect().centerY()
+                - clipAnimationHelper.getTargetRect().centerY();
+        return new ScaleAndTranslation(toScale, 0, toTranslationY);
+    }
+
+    @Override
+    public ScaleAndTranslation getWorkspaceScaleAndTranslation(Launcher launcher) {
+        float shiftRange = launcher.getAllAppsController().getShiftRange();
+        float shiftProgress = getVerticalProgress(launcher) - NORMAL.getVerticalProgress(launcher);
+        float translationY = shiftProgress * shiftRange;
+        return new ScaleAndTranslation(1, 0, translationY);
+    }
+
+    @Override
+    public float getVerticalProgress(Launcher launcher) {
+        return BACKGROUND_APP.getVerticalProgress(launcher);
+    }
+
+    @Override
+    public int getVisibleElements(Launcher launcher) {
+        return NONE;
+    }
+
+    @Override
+    public void onStateTransitionEnd(Launcher launcher) {
+        TaskView tasktolaunch = launcher.<RecentsView>getOverviewPanel().getTaskViewAt(0);
+        if (tasktolaunch != null) {
+            tasktolaunch.launchTask(false);
+        } else {
+            launcher.getStateManager().goToState(NORMAL);
+        }
+    }
+}
diff --git a/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/touchcontrollers/QuickSwitchTouchController.java b/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/touchcontrollers/QuickSwitchTouchController.java
new file mode 100644
index 000000000..91a31ddfe
--- /dev/null
+++ b/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/touchcontrollers/QuickSwitchTouchController.java
@@ -0,0 +1,147 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.launcher3.uioverrides.touchcontrollers;
+
+import static com.android.launcher3.LauncherState.NORMAL;
+import static com.android.launcher3.LauncherState.QUICK_SWITCH;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_ALL_APPS_FADE;
+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_Y;
+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_TRANSLATE;
+import static com.android.launcher3.anim.Interpolators.ACCEL_2;
+import static com.android.launcher3.anim.Interpolators.DEACCEL_2;
+import static com.android.launcher3.anim.Interpolators.INSTANT;
+import static com.android.launcher3.anim.Interpolators.LINEAR;
+
+import android.view.MotionEvent;
+
+import com.android.launcher3.Launcher;
+import com.android.launcher3.LauncherState;
+import com.android.launcher3.LauncherStateManager;
+import com.android.launcher3.Utilities;
+import com.android.launcher3.anim.AnimatorSetBuilder;
+import com.android.launcher3.config.FeatureFlags;
+import com.android.launcher3.touch.AbstractStateChangeTouchController;
+import com.android.launcher3.touch.SwipeDetector;
+import com.android.launcher3.userevent.nano.LauncherLogProto;
+import com.android.launcher3.userevent.nano.LauncherLogProto.Action.Direction;
+import com.android.quickstep.views.RecentsView;
+import com.android.quickstep.views.TaskView;
+
+import androidx.annotation.Nullable;
+
+/**
+ * Handles quick switching to a recent task from the home screen.
+ */
+public class QuickSwitchTouchController extends AbstractStateChangeTouchController {
+
+    private @Nullable TaskView mTaskToLaunch;
+
+    public QuickSwitchTouchController(Launcher launcher) {
+        super(launcher, SwipeDetector.HORIZONTAL);
+    }
+
+    @Override
+    protected boolean canInterceptTouch(MotionEvent ev) {
+        if (mCurrentAnimation != null) {
+            return true;
+        }
+        if (!mLauncher.isInState(LauncherState.NORMAL)) {
+            return false;
+        }
+        if ((ev.getEdgeFlags() & Utilities.EDGE_NAV_BAR) == 0) {
+            return false;
+        }
+        return true;
+    }
+
+    @Override
+    protected LauncherState getTargetState(LauncherState fromState, boolean isDragTowardPositive) {
+        return isDragTowardPositive ? QUICK_SWITCH : NORMAL;
+    }
+
+    @Override
+    public void onDragStart(boolean start) {
+        super.onDragStart(start);
+        mStartContainerType = LauncherLogProto.ContainerType.NAVBAR;
+        mTaskToLaunch = mLauncher.<RecentsView>getOverviewPanel().getTaskViewAt(0);
+    }
+
+    @Override
+    protected void onSwipeInteractionCompleted(LauncherState targetState, int logAction) {
+        super.onSwipeInteractionCompleted(targetState, logAction);
+        mTaskToLaunch = null;
+    }
+
+    @Override
+    protected float initCurrentAnimation(int animComponents) {
+        AnimatorSetBuilder animatorSetBuilder = new AnimatorSetBuilder();
+        setupInterpolators(animatorSetBuilder);
+        long accuracy = (long) (getShiftRange() * 2);
+        mCurrentAnimation = mLauncher.getStateManager().createAnimationToNewWorkspace(mToState,
+                animatorSetBuilder, accuracy, this::clearState, LauncherStateManager.ANIM_ALL);
+        mCurrentAnimation.getAnimationPlayer().addUpdateListener(valueAnimator -> {
+            updateFullscreenProgress((Float) valueAnimator.getAnimatedValue());
+        });
+        return 1 / getShiftRange();
+    }
+
+    private void setupInterpolators(AnimatorSetBuilder animatorSetBuilder) {
+        animatorSetBuilder.setInterpolator(ANIM_WORKSPACE_FADE, DEACCEL_2);
+        animatorSetBuilder.setInterpolator(ANIM_ALL_APPS_FADE, DEACCEL_2);
+        if (FeatureFlags.SWIPE_HOME.get()) {
+            // Overview lives to the left of workspace, so translate down later than over
+            animatorSetBuilder.setInterpolator(ANIM_WORKSPACE_TRANSLATE, ACCEL_2);
+            animatorSetBuilder.setInterpolator(ANIM_VERTICAL_PROGRESS, ACCEL_2);
+            animatorSetBuilder.setInterpolator(ANIM_OVERVIEW_SCALE, ACCEL_2);
+            animatorSetBuilder.setInterpolator(ANIM_OVERVIEW_TRANSLATE_Y, ACCEL_2);
+            animatorSetBuilder.setInterpolator(ANIM_OVERVIEW_FADE, INSTANT);
+        } else {
+            animatorSetBuilder.setInterpolator(ANIM_WORKSPACE_TRANSLATE, LINEAR);
+            animatorSetBuilder.setInterpolator(ANIM_VERTICAL_PROGRESS, LINEAR);
+        }
+    }
+
+    @Override
+    protected void updateProgress(float progress) {
+        super.updateProgress(progress);
+        updateFullscreenProgress(progress);
+    }
+
+    private void updateFullscreenProgress(float progress) {
+        if (mTaskToLaunch != null) {
+            mTaskToLaunch.setFullscreenProgress(progress);
+        }
+    }
+
+    @Override
+    protected float getShiftRange() {
+        return mLauncher.getDeviceProfile().widthPx / 2f;
+    }
+
+    @Override
+    protected int getLogContainerTypeForNormalState() {
+        return LauncherLogProto.ContainerType.NAVBAR;
+    }
+
+    @Override
+    protected int getDirectionForLog() {
+        return Utilities.isRtl(mLauncher.getResources()) ? Direction.LEFT : Direction.RIGHT;
+    }
+}
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/OverviewInputConsumer.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/OverviewInputConsumer.java
index 02ffdb3e1..7794d8d99 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/OverviewInputConsumer.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/OverviewInputConsumer.java
@@ -19,7 +19,6 @@ import static android.view.MotionEvent.ACTION_CANCEL;
 import static android.view.MotionEvent.ACTION_DOWN;
 import static android.view.MotionEvent.ACTION_MOVE;
 import static android.view.MotionEvent.ACTION_UP;
-
 import static com.android.launcher3.config.FeatureFlags.ENABLE_QUICKSTEP_LIVE_TILE;
 import static com.android.quickstep.TouchInteractionService.TOUCH_INTERACTION_LOG;
 import static com.android.systemui.shared.system.ActivityManagerWrapper.CLOSE_SYSTEM_WINDOWS_REASON_RECENTS;
@@ -46,7 +45,7 @@ public class OverviewInputConsumer<T extends BaseDraggingActivity>
     private final BaseDragLayer mTarget;
     private final int[] mLocationOnScreen = new int[2];
     private final PointF mDownPos = new PointF();
-    private final int mTouchSlop;
+    private final int mTouchSlopSquared;
 
     private final boolean mStartingInActivityBounds;
 
@@ -56,7 +55,8 @@ public class OverviewInputConsumer<T extends BaseDraggingActivity>
     OverviewInputConsumer(T activity, boolean startingInActivityBounds) {
         mActivity = activity;
         mTarget = activity.getDragLayer();
-        mTouchSlop = ViewConfiguration.get(mActivity).getScaledTouchSlop();
+        int touchSlop = ViewConfiguration.get(mActivity).getScaledTouchSlop();
+        mTouchSlopSquared = touchSlop * touchSlop;
         mStartingInActivityBounds = startingInActivityBounds;
     }
 
@@ -88,10 +88,11 @@ public class OverviewInputConsumer<T extends BaseDraggingActivity>
                             false /* closeActiveWindows */);
                     break;
                 case ACTION_MOVE: {
-                    float displacement = mActivity.getDeviceProfile().isLandscape ?
-                            ev.getX() - mDownPos.x : ev.getY() - mDownPos.y;
-                    if (Math.abs(displacement) >= mTouchSlop) {
-                        // Start tracking only when mTouchSlop is crossed.
+                    float x = ev.getX() - mDownPos.x;
+                    float y = ev.getY() - mDownPos.y;
+                    double hypotSquared = x * x + y * y;
+                    if (hypotSquared >= mTouchSlopSquared) {
+                        // Start tracking only when touch slop is crossed.
                         startTouchTracking(ev, true /* updateLocationOffset */,
                                 true /* closeActiveWindows */);
                     }
diff --git a/quickstep/src/com/android/launcher3/uioverrides/BaseRecentsViewStateController.java b/quickstep/src/com/android/launcher3/uioverrides/BaseRecentsViewStateController.java
index 89093e991..f0204b9ba 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/BaseRecentsViewStateController.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/BaseRecentsViewStateController.java
@@ -19,7 +19,8 @@ package com.android.launcher3.uioverrides;
 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;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_OVERVIEW_TRANSLATE_X;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_OVERVIEW_TRANSLATE_Y;
 import static com.android.launcher3.anim.AnimatorSetBuilder.FLAG_DONT_ANIMATE_OVERVIEW;
 import static com.android.launcher3.anim.Interpolators.AGGRESSIVE_EASE_IN_OUT;
 import static com.android.launcher3.anim.Interpolators.LINEAR;
@@ -96,15 +97,17 @@ public abstract class BaseRecentsViewStateController<T extends View>
         ScaleAndTranslation scaleAndTranslation = toState.getOverviewScaleAndTranslation(mLauncher);
         Interpolator scaleInterpolator = builder.getInterpolator(ANIM_OVERVIEW_SCALE, LINEAR);
         setter.setFloat(mRecentsView, SCALE_PROPERTY, scaleAndTranslation.scale, scaleInterpolator);
-        Interpolator translateInterpolator = builder.getInterpolator(
-                ANIM_OVERVIEW_TRANSLATE, LINEAR);
+        Interpolator translateXInterpolator = builder.getInterpolator(
+                ANIM_OVERVIEW_TRANSLATE_X, LINEAR);
+        Interpolator translateYInterpolator = builder.getInterpolator(
+                ANIM_OVERVIEW_TRANSLATE_Y, LINEAR);
         float translationX = scaleAndTranslation.translationX;
         if (mRecentsView.getLayoutDirection() == View.LAYOUT_DIRECTION_RTL) {
             translationX = -translationX;
         }
-        setter.setFloat(mRecentsView, View.TRANSLATION_X, translationX, translateInterpolator);
+        setter.setFloat(mRecentsView, View.TRANSLATION_X, translationX, translateXInterpolator);
         setter.setFloat(mRecentsView, View.TRANSLATION_Y, scaleAndTranslation.translationY,
-                translateInterpolator);
+                translateYInterpolator);
         setter.setFloat(mRecentsView, getContentAlphaProperty(), toState.overviewUi ? 1 : 0,
                 builder.getInterpolator(ANIM_OVERVIEW_FADE, AGGRESSIVE_EASE_IN_OUT));
     }
diff --git a/src/com/android/launcher3/LauncherState.java b/src/com/android/launcher3/LauncherState.java
index 182ed4bc8..c65a871b6 100644
--- a/src/com/android/launcher3/LauncherState.java
+++ b/src/com/android/launcher3/LauncherState.java
@@ -23,6 +23,7 @@ import static com.android.launcher3.TestProtocol.BACKGROUND_APP_STATE_ORDINAL;
 import static com.android.launcher3.TestProtocol.NORMAL_STATE_ORDINAL;
 import static com.android.launcher3.TestProtocol.OVERVIEW_PEEK_STATE_ORDINAL;
 import static com.android.launcher3.TestProtocol.OVERVIEW_STATE_ORDINAL;
+import static com.android.launcher3.TestProtocol.QUICK_SWITCH_STATE_ORDINAL;
 import static com.android.launcher3.TestProtocol.SPRING_LOADED_STATE_ORDINAL;
 import static com.android.launcher3.anim.Interpolators.ACCEL_2;
 import static com.android.launcher3.states.RotationHelper.REQUEST_NONE;
@@ -31,9 +32,9 @@ import android.view.animation.Interpolator;
 
 import com.android.launcher3.config.FeatureFlags;
 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.uioverrides.UiFactory;
 import com.android.launcher3.userevent.nano.LauncherLogProto.Action;
 import com.android.launcher3.userevent.nano.LauncherLogProto.ContainerType;
 
@@ -77,7 +78,7 @@ public class LauncherState {
                 }
             };
 
-    private static final LauncherState[] sAllStates = new LauncherState[6];
+    private static final LauncherState[] sAllStates = new LauncherState[7];
 
     /**
      * TODO: Create a separate class for NORMAL state.
@@ -97,6 +98,8 @@ public class LauncherState {
     public static final LauncherState OVERVIEW = new OverviewState(OVERVIEW_STATE_ORDINAL);
     public static final LauncherState OVERVIEW_PEEK =
             OverviewState.newPeekState(OVERVIEW_PEEK_STATE_ORDINAL);
+    public static final LauncherState QUICK_SWITCH =
+            OverviewState.newSwitchState(QUICK_SWITCH_STATE_ORDINAL);
     public static final LauncherState BACKGROUND_APP =
             OverviewState.newBackgroundState(BACKGROUND_APP_STATE_ORDINAL);
 
diff --git a/src/com/android/launcher3/LauncherStateManager.java b/src/com/android/launcher3/LauncherStateManager.java
index 19c896fba..5f7538b40 100644
--- a/src/com/android/launcher3/LauncherStateManager.java
+++ b/src/com/android/launcher3/LauncherStateManager.java
@@ -22,7 +22,7 @@ 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;
+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;
@@ -296,7 +296,7 @@ public class LauncherStateManager {
             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, OVERSHOOT_1_7);
+            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.
@@ -305,7 +305,7 @@ public class LauncherStateManager {
             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, ACCEL);
+            builder.setInterpolator(ANIM_OVERVIEW_TRANSLATE_X, ACCEL);
             builder.setInterpolator(ANIM_OVERVIEW_FADE, DEACCEL_1_7);
             Workspace workspace = mLauncher.getWorkspace();
 
diff --git a/src/com/android/launcher3/TestProtocol.java b/src/com/android/launcher3/TestProtocol.java
index 0451ceb5f..49a736eed 100644
--- a/src/com/android/launcher3/TestProtocol.java
+++ b/src/com/android/launcher3/TestProtocol.java
@@ -29,8 +29,9 @@ public final class TestProtocol {
     public static final int SPRING_LOADED_STATE_ORDINAL = 1;
     public static final int OVERVIEW_STATE_ORDINAL = 2;
     public static final int OVERVIEW_PEEK_STATE_ORDINAL = 3;
-    public static final int ALL_APPS_STATE_ORDINAL = 4;
-    public static final int BACKGROUND_APP_STATE_ORDINAL = 5;
+    public static final int QUICK_SWITCH_STATE_ORDINAL = 4;
+    public static final int ALL_APPS_STATE_ORDINAL = 5;
+    public static final int BACKGROUND_APP_STATE_ORDINAL = 6;
 
     public static final String TEST_INFO_RESPONSE_FIELD = "response";
     public static final String REQUEST_HOME_TO_OVERVIEW_SWIPE_HEIGHT =
diff --git a/src/com/android/launcher3/Utilities.java b/src/com/android/launcher3/Utilities.java
index dd755cb97..fd4b5086b 100644
--- a/src/com/android/launcher3/Utilities.java
+++ b/src/com/android/launcher3/Utilities.java
@@ -308,10 +308,14 @@ public final class Utilities {
             Log.e(TAG, "mapToRange: range has 0 length");
             return toMin;
         }
-        float progress = Math.abs(t - fromMin) / Math.abs(fromMax - fromMin);
+        float progress = getProgress(t, fromMin, fromMax);
         return mapRange(interpolator.getInterpolation(progress), toMin, toMax);
     }
 
+    public static float getProgress(float current, float min, float max) {
+        return Math.abs(current - min) / Math.abs(max - min);
+    }
+
     public static float mapRange(float value, float min, float max) {
         return min + (value * (max - min));
     }
diff --git a/src/com/android/launcher3/WorkspaceStateTransitionAnimation.java b/src/com/android/launcher3/WorkspaceStateTransitionAnimation.java
index 21fdd3df0..99a880104 100644
--- a/src/com/android/launcher3/WorkspaceStateTransitionAnimation.java
+++ b/src/com/android/launcher3/WorkspaceStateTransitionAnimation.java
@@ -21,6 +21,7 @@ import static com.android.launcher3.LauncherAnimUtils.SCALE_PROPERTY;
 import static com.android.launcher3.LauncherState.HOTSEAT_ICONS;
 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.LINEAR;
 import static com.android.launcher3.anim.Interpolators.ZOOM_OUT;
 import static com.android.launcher3.anim.PropertySetter.NO_ANIM_PROPERTY_SETTER;
@@ -114,7 +115,9 @@ public class WorkspaceStateTransitionAnimation {
             return;
         }
 
-        Interpolator translationInterpolator = !playAtomicComponent ? LINEAR : ZOOM_OUT;
+        Interpolator translationInterpolator = !playAtomicComponent
+                ? LINEAR
+                : builder.getInterpolator(ANIM_WORKSPACE_TRANSLATE, ZOOM_OUT);
         propertySetter.setFloat(mWorkspace, View.TRANSLATION_X,
                 scaleAndTranslation.translationX, translationInterpolator);
         propertySetter.setFloat(mWorkspace, View.TRANSLATION_Y,
diff --git a/src/com/android/launcher3/allapps/AllAppsTransitionController.java b/src/com/android/launcher3/allapps/AllAppsTransitionController.java
index a4ecec7b8..4a1d43206 100644
--- a/src/com/android/launcher3/allapps/AllAppsTransitionController.java
+++ b/src/com/android/launcher3/allapps/AllAppsTransitionController.java
@@ -205,7 +205,7 @@ public class AllAppsTransitionController implements StateHandler, OnDeviceProfil
         mAppsView.getSearchUiManager().setContentVisibility(visibleElements, setter, allAppsFade);
 
         setter.setInt(mScrimView, ScrimView.DRAG_HANDLE_ALPHA,
-                (visibleElements & VERTICAL_SWIPE_INDICATOR) != 0 ? 255 : 0, LINEAR);
+                (visibleElements & VERTICAL_SWIPE_INDICATOR) != 0 ? 255 : 0, allAppsFade);
     }
 
     public AnimatorListenerAdapter getProgressAnimatorListener() {
diff --git a/src/com/android/launcher3/anim/AnimatorSetBuilder.java b/src/com/android/launcher3/anim/AnimatorSetBuilder.java
index 3ac9d3c27..5c498f8bb 100644
--- a/src/com/android/launcher3/anim/AnimatorSetBuilder.java
+++ b/src/com/android/launcher3/anim/AnimatorSetBuilder.java
@@ -30,11 +30,13 @@ public class AnimatorSetBuilder {
 
     public static final int ANIM_VERTICAL_PROGRESS = 0;
     public static final int ANIM_WORKSPACE_SCALE = 1;
-    public static final int ANIM_WORKSPACE_FADE = 2;
-    public static final int ANIM_OVERVIEW_SCALE = 3;
-    public static final int ANIM_OVERVIEW_TRANSLATE = 4;
-    public static final int ANIM_OVERVIEW_FADE = 5;
-    public static final int ANIM_ALL_APPS_FADE = 6;
+    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 FLAG_DONT_ANIMATE_OVERVIEW = 1 << 0;
 
diff --git a/src_ui_overrides/com/android/launcher3/uioverrides/states/OverviewState.java b/src_ui_overrides/com/android/launcher3/uioverrides/states/OverviewState.java
index 1b1836d4c..aeba7883b 100644
--- a/src_ui_overrides/com/android/launcher3/uioverrides/states/OverviewState.java
+++ b/src_ui_overrides/com/android/launcher3/uioverrides/states/OverviewState.java
@@ -36,4 +36,8 @@ public class OverviewState extends LauncherState {
     public static OverviewState newPeekState(int id) {
         return new OverviewState(id);
     }
+
+    public static OverviewState newSwitchState(int id) {
+        return new OverviewState(id);
+    }
 }