Updating gesture tutorial home animation

> Using a separate View as icon, instead of the taskView
> Updating swipe animation logic to abstract out FloatingIconView dependency

Change-Id: Ib466262afead11ebe4ca035d589f0382c37e3e97
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/FallbackSwipeHandler.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/FallbackSwipeHandler.java
index fc7a119..1909f47 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/FallbackSwipeHandler.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/FallbackSwipeHandler.java
@@ -140,7 +140,6 @@
 
         private final long mDuration;
         FallbackHomeAnimationFactory(long duration) {
-            super(null);
             mDuration = duration;
 
             if (mRunningOverHome) {
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/LauncherSwipeHandlerV2.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/LauncherSwipeHandlerV2.java
index fa7d268..052d0a6 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/LauncherSwipeHandlerV2.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/LauncherSwipeHandlerV2.java
@@ -16,6 +16,7 @@
 package com.android.quickstep;
 
 import static com.android.launcher3.LauncherState.NORMAL;
+import static com.android.launcher3.views.FloatingIconView.SHAPE_PROGRESS_DURATION;
 
 import android.animation.AnimatorSet;
 import android.content.Context;
@@ -28,6 +29,7 @@
 import com.android.launcher3.BaseQuickstepLauncher;
 import com.android.launcher3.anim.AnimatorPlaybackController;
 import com.android.launcher3.views.FloatingIconView;
+import com.android.quickstep.util.RectFSpringAnim;
 import com.android.quickstep.util.StaggeredWorkspaceAnim;
 import com.android.quickstep.views.RecentsView;
 import com.android.quickstep.views.TaskView;
@@ -72,36 +74,39 @@
             mActivity.getRootView().setForceHideBackArrow(true);
             mActivity.setHintUserWillBeActive();
 
-            homeAnimFactory = new HomeAnimationFactory(floatingIconView) {
-
-                @Override
-                public RectF getWindowTargetRect() {
-                    if (canUseWorkspaceView) {
+            if (canUseWorkspaceView) {
+                // We want the window alpha to be 0 once this threshold is met, so that the
+                // FolderIconView can be seen morphing into the icon shape.
+                float windowAlphaThreshold = 1f - SHAPE_PROGRESS_DURATION;
+                homeAnimFactory = new LauncherHomeAnimationFactory() {
+                    @Override
+                    public RectF getWindowTargetRect() {
                         return iconLocation;
-                    } else {
-                        return super.getWindowTargetRect();
                     }
-                }
 
-                @NonNull
-                @Override
-                public AnimatorPlaybackController createActivityAnimationToHome() {
-                    // Return an empty APC here since we have an non-user controlled animation
-                    // to home.
-                    long accuracy = 2 * Math.max(mDp.widthPx, mDp.heightPx);
-                    return mActivity.getStateManager().createAnimationToNewWorkspace(
-                            NORMAL, accuracy, 0 /* animComponents */);
-                }
+                    @Override
+                    public void setAnimation(RectFSpringAnim anim) {
+                        anim.addAnimatorListener(floatingIconView);
+                        floatingIconView.setOnTargetChangeListener(anim::onTargetPositionChanged);
+                        floatingIconView.setFastFinishRunnable(anim::end);
+                    }
 
-                @Override
-                public void playAtomicAnimation(float velocity) {
-                    new StaggeredWorkspaceAnim(mActivity, velocity,
-                            true /* animateOverviewScrim */).start();
-                }
-            };
+                    @Override
+                    public void update(RectF currentRect, float progress, float radius) {
+                        floatingIconView.update(currentRect, 1f, progress, windowAlphaThreshold,
+                                radius, false);
+                    }
 
+                    @Override
+                    public void onCancel() {
+                        floatingIconView.fastFinish();
+                    }
+                };
+            } else {
+                homeAnimFactory = new LauncherHomeAnimationFactory();
+            }
         } else {
-            homeAnimFactory = new HomeAnimationFactory(null) {
+            homeAnimFactory = new HomeAnimationFactory() {
                 @Override
                 public AnimatorPlaybackController createActivityAnimationToHome() {
                     return AnimatorPlaybackController.wrap(new AnimatorSet(), duration);
@@ -118,4 +123,22 @@
         mRecentsAnimationController.finish(
                 true /* toRecents */, callback, true /* sendUserLeaveHint */);
     }
+
+    private class LauncherHomeAnimationFactory extends HomeAnimationFactory {
+        @NonNull
+        @Override
+        public AnimatorPlaybackController createActivityAnimationToHome() {
+            // Return an empty APC here since we have an non-user controlled animation
+            // to home.
+            long accuracy = 2 * Math.max(mDp.widthPx, mDp.heightPx);
+            return mActivity.getStateManager().createAnimationToNewWorkspace(
+                    NORMAL, accuracy, 0 /* animComponents */);
+        }
+
+        @Override
+        public void playAtomicAnimation(float velocity) {
+            new StaggeredWorkspaceAnim(mActivity, velocity,
+                    true /* animateOverviewScrim */).start();
+        }
+    }
 }
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/SwipeUpAnimationLogic.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/SwipeUpAnimationLogic.java
index dc8f1c5..2962234 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/SwipeUpAnimationLogic.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/SwipeUpAnimationLogic.java
@@ -17,7 +17,6 @@
 
 import static com.android.launcher3.anim.Interpolators.ACCEL_1_5;
 import static com.android.launcher3.anim.Interpolators.DEACCEL;
-import static com.android.launcher3.views.FloatingIconView.SHAPE_PROGRESS_DURATION;
 
 import android.animation.Animator;
 import android.content.Context;
@@ -28,7 +27,6 @@
 import android.view.animation.Interpolator;
 
 import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
 import androidx.annotation.UiThread;
 
 import com.android.launcher3.DeviceProfile;
@@ -37,7 +35,6 @@
 import com.android.launcher3.anim.AnimatorPlaybackController;
 import com.android.launcher3.anim.PendingAnimation;
 import com.android.launcher3.touch.PagedOrientationHandler;
-import com.android.launcher3.views.FloatingIconView;
 import com.android.quickstep.util.RectFSpringAnim;
 import com.android.quickstep.util.TaskViewSimulator;
 import com.android.quickstep.util.TransformParams;
@@ -148,12 +145,6 @@
 
     protected abstract class HomeAnimationFactory {
 
-        public FloatingIconView mIconView;
-
-        public HomeAnimationFactory(@Nullable FloatingIconView iconView) {
-            mIconView = iconView;
-        }
-
         public @NonNull RectF getWindowTargetRect() {
             PagedOrientationHandler orientationHandler = getOrientationHandler();
             DeviceProfile dp = mDp;
@@ -174,6 +165,12 @@
         public void playAtomicAnimation(float velocity) {
             // No-op
         }
+
+        public void setAnimation(RectFSpringAnim anim) { }
+
+        public void update(RectF currentRect, float progress, float radius) { }
+
+        public void onCancel() { }
     }
 
     /**
@@ -184,8 +181,6 @@
     protected RectFSpringAnim createWindowAnimationToHome(float startProgress,
             HomeAnimationFactory homeAnimationFactory) {
         final RectF targetRect = homeAnimationFactory.getWindowTargetRect();
-        final FloatingIconView fiv = homeAnimationFactory.mIconView;
-        final boolean isFloatingIconView = fiv != null;
 
         mWindowTransitionController.setPlayFraction(startProgress / mDragLengthFactor);
         mTaskViewSimulator.apply(mTransformParams.setProgress(startProgress));
@@ -203,11 +198,7 @@
         windowToHomePositionMap.mapRect(startRect);
 
         RectFSpringAnim anim = new RectFSpringAnim(startRect, targetRect, mContext);
-        if (isFloatingIconView) {
-            anim.addAnimatorListener(fiv);
-            fiv.setOnTargetChangeListener(anim::onTargetPositionChanged);
-            fiv.setFastFinishRunnable(anim::end);
-        }
+        homeAnimationFactory.setAnimation(anim);
 
         SpringAnimationRunner runner = new SpringAnimationRunner(
                 homeAnimationFactory, cropRectF, homeToWindowPositionMap);
@@ -242,32 +233,27 @@
 
         final RectF mWindowCurrentRect = new RectF();
         final Matrix mHomeToWindowPositionMap;
+        final HomeAnimationFactory mAnimationFactory;
 
-        final FloatingIconView mFIV;
         final AnimatorPlaybackController mHomeAnim;
         final RectF mCropRectF;
 
         final float mStartRadius;
         final float mEndRadius;
-        final float mWindowAlphaThreshold;
 
         SpringAnimationRunner(HomeAnimationFactory factory, RectF cropRectF,
                 Matrix homeToWindowPositionMap) {
+            mAnimationFactory = factory;
             mHomeAnim = factory.createActivityAnimationToHome();
             mCropRectF = cropRectF;
             mHomeToWindowPositionMap = homeToWindowPositionMap;
 
             cropRectF.roundOut(mCropRect);
-            mFIV = factory.mIconView;
 
             // End on a "round-enough" radius so that the shape reveal doesn't have to do too much
             // rounding at the end of the animation.
             mStartRadius = mTaskViewSimulator.getCurrentCornerRadius();
             mEndRadius = cropRectF.width() / 2f;
-
-            // We want the window alpha to be 0 once this threshold is met, so that the
-            // FolderIconView can be seen morphing into the icon shape.
-            mWindowAlphaThreshold = mFIV != null ? 1f - SHAPE_PROGRESS_DURATION : 1f;
         }
 
         @Override
@@ -282,10 +268,7 @@
                     .setCornerRadius(cornerRadius);
 
             mTransformParams.applySurfaceParams(mTransformParams.createSurfaceParams(this));
-            if (mFIV != null) {
-                mFIV.update(currentRect, 1f, progress,
-                        mWindowAlphaThreshold, mMatrix.mapRadius(cornerRadius), false);
-            }
+            mAnimationFactory.update(currentRect, progress, mMatrix.mapRadius(cornerRadius));
         }
 
         @Override
@@ -298,9 +281,7 @@
 
         @Override
         public void onCancel() {
-            if (mFIV != null) {
-                mFIV.fastFinish();
-            }
+            mAnimationFactory.onCancel();
         }
 
         @Override
diff --git a/quickstep/res/drawable/bg_circle.xml b/quickstep/res/drawable/bg_circle.xml
new file mode 100644
index 0000000..506177b
--- /dev/null
+++ b/quickstep/res/drawable/bg_circle.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+    Copyright (C) 2020 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.
+-->
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="oval">
+    <solid android:color="#FFFFFFFF" />
+</shape>
\ No newline at end of file
diff --git a/quickstep/res/layout/gesture_tutorial_fragment.xml b/quickstep/res/layout/gesture_tutorial_fragment.xml
index 459d65f..43bf0ea 100644
--- a/quickstep/res/layout/gesture_tutorial_fragment.xml
+++ b/quickstep/res/layout/gesture_tutorial_fragment.xml
@@ -24,6 +24,14 @@
         android:layout_height="match_parent"
         android:background="@drawable/gesture_tutorial_ripple"/>
 
+    <com.android.launcher3.views.ClipIconView
+        android:id="@+id/gesture_tutorial_fake_icon_view"
+        android:layout_width="20dp"
+        android:layout_height="20dp"
+        android:background="@drawable/bg_circle"
+        android:backgroundTint="@color/gesture_tutorial_fake_task_view_color"
+        android:visibility="invisible" />
+
     <View
         android:id="@+id/gesture_tutorial_fake_task_view"
         android:layout_width="match_parent"
@@ -41,81 +49,81 @@
         android:id="@+id/gesture_tutorial_fragment_close_button"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:padding="18dp"
-        android:layout_marginTop="30dp"
-        android:layout_marginStart="4dp"
         android:layout_alignParentStart="true"
         android:layout_alignParentTop="true"
-        android:background="@android:color/transparent"
+        android:layout_marginStart="4dp"
+        android:layout_marginTop="30dp"
         android:accessibilityTraversalAfter="@id/gesture_tutorial_fragment_titles_container"
+        android:background="@android:color/transparent"
         android:contentDescription="@string/gesture_tutorial_close_button_content_description"
-        android:tint="?android:attr/textColorPrimary"
-        android:src="@drawable/gesture_tutorial_close_button"/>
+        android:padding="18dp"
+        android:src="@drawable/gesture_tutorial_close_button"
+        android:tint="?android:attr/textColorPrimary"/>
 
     <LinearLayout
         android:id="@+id/gesture_tutorial_fragment_titles_container"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:layout_marginTop="70dp"
         android:layout_alignParentTop="true"
+        android:layout_marginTop="70dp"
         android:focusable="true"
         android:gravity="center_horizontal"
         android:orientation="vertical">
 
         <TextView
             android:id="@+id/gesture_tutorial_fragment_title_view"
+            style="@style/TextAppearance.GestureTutorial.Title"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_marginStart="@dimen/gesture_tutorial_title_margin_start_end"
-            android:layout_marginEnd="@dimen/gesture_tutorial_title_margin_start_end"
-            style="@style/TextAppearance.GestureTutorial.Title"/>
+            android:layout_marginEnd="@dimen/gesture_tutorial_title_margin_start_end"/>
 
         <TextView
             android:id="@+id/gesture_tutorial_fragment_subtitle_view"
+            style="@style/TextAppearance.GestureTutorial.Subtitle"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:layout_marginTop="10dp"
             android:layout_marginStart="@dimen/gesture_tutorial_subtitle_margin_start_end"
-            android:layout_marginEnd="@dimen/gesture_tutorial_subtitle_margin_start_end"
-            style="@style/TextAppearance.GestureTutorial.Subtitle"/>
+            android:layout_marginTop="10dp"
+            android:layout_marginEnd="@dimen/gesture_tutorial_subtitle_margin_start_end"/>
     </LinearLayout>
 
     <TextView
         android:id="@+id/gesture_tutorial_fragment_feedback_view"
+        style="@style/TextAppearance.GestureTutorial.Feedback"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_marginBottom="10dp"
-        android:layout_centerHorizontal="true"
         android:layout_above="@id/gesture_tutorial_fragment_action_button"
+        android:layout_centerHorizontal="true"
         android:layout_marginStart="@dimen/gesture_tutorial_feedback_margin_start_end"
         android:layout_marginEnd="@dimen/gesture_tutorial_feedback_margin_start_end"
-        style="@style/TextAppearance.GestureTutorial.Feedback"/>
+        android:layout_marginBottom="10dp"/>
 
     <!-- android:stateListAnimator="@null" removes shadow and normal on click behavior (increase
          of elevation and shadow) which is replaced by ripple effect in android:foreground -->
     <Button
         android:id="@+id/gesture_tutorial_fragment_action_button"
+        style="@style/TextAppearance.GestureTutorial.ButtonLabel"
         android:layout_width="142dp"
         android:layout_height="49dp"
-        android:layout_marginEnd="@dimen/gesture_tutorial_button_margin_start_end"
-        android:layout_marginBottom="48dp"
         android:layout_alignParentEnd="true"
         android:layout_alignParentBottom="true"
-        android:stateListAnimator="@null"
+        android:layout_marginEnd="@dimen/gesture_tutorial_button_margin_start_end"
+        android:layout_marginBottom="48dp"
         android:background="@drawable/gesture_tutorial_action_button_background"
         android:foreground="?android:attr/selectableItemBackgroundBorderless"
-        style="@style/TextAppearance.GestureTutorial.ButtonLabel"/>
+        android:stateListAnimator="@null"/>
 
     <Button
         android:id="@+id/gesture_tutorial_fragment_action_text_button"
+        style="@style/TextAppearance.GestureTutorial.TextButtonLabel"
         android:layout_width="142dp"
         android:layout_height="49dp"
-        android:layout_marginStart="@dimen/gesture_tutorial_button_margin_start_end"
-        android:layout_marginBottom="48dp"
         android:layout_alignParentStart="true"
         android:layout_alignParentBottom="true"
-        android:stateListAnimator="@null"
+        android:layout_marginStart="@dimen/gesture_tutorial_button_margin_start_end"
+        android:layout_marginBottom="48dp"
         android:background="@null"
         android:foreground="?android:attr/selectableItemBackgroundBorderless"
-        style="@style/TextAppearance.GestureTutorial.TextButtonLabel"/>
+        android:stateListAnimator="@null"/>
 </RelativeLayout>
\ No newline at end of file
diff --git a/quickstep/src/com/android/quickstep/interaction/SwipeUpGestureTutorialController.java b/quickstep/src/com/android/quickstep/interaction/SwipeUpGestureTutorialController.java
index 14e00dc..4110b33 100644
--- a/quickstep/src/com/android/quickstep/interaction/SwipeUpGestureTutorialController.java
+++ b/quickstep/src/com/android/quickstep/interaction/SwipeUpGestureTutorialController.java
@@ -17,6 +17,7 @@
 
 import static com.android.launcher3.anim.Interpolators.ACCEL;
 import static com.android.launcher3.util.DefaultDisplay.getSingleFrameMs;
+import static com.android.launcher3.views.FloatingIconView.SHAPE_PROGRESS_DURATION;
 import static com.android.quickstep.BaseSwipeUpHandlerV2.MAX_SWIPE_DURATION;
 import static com.android.quickstep.interaction.TutorialController.TutorialType.HOME_NAVIGATION_COMPLETE;
 import static com.android.quickstep.interaction.TutorialController.TutorialType.OVERVIEW_NAVIGATION_COMPLETE;
@@ -110,6 +111,7 @@
         AnimatorListenerAdapter resetTaskView = new AnimatorListenerAdapter() {
             @Override
             public void onAnimationEnd(Animator animation, boolean isReverse) {
+                mFakeIconView.setVisibility(View.INVISIBLE);
                 mFakeTaskView.setVisibility(View.INVISIBLE);
                 mFakeTaskView.setAlpha(1);
                 mRunningWindowAnim = null;
@@ -131,6 +133,7 @@
             });
         } else {
             anim.setViewAlpha(mFakeTaskView, 0, ACCEL);
+            anim.setViewAlpha(mFakeIconView, 0, ACCEL);
             anim.addListener(resetTaskView);
         }
         if (onEndRunnable != null) {
@@ -202,7 +205,7 @@
             // derivative of the scroll interpolator at zero, ie. 2.
             long baseDuration = Math.round(Math.abs(distanceToTravel / velocityPxPerMs.y));
             long duration = Math.min(MAX_SWIPE_DURATION, 2 * baseDuration);
-            HomeAnimationFactory homeAnimFactory = new HomeAnimationFactory(null) {
+            HomeAnimationFactory homeAnimFactory = new HomeAnimationFactory() {
                 @Override
                 public AnimatorPlaybackController createActivityAnimationToHome() {
                     return AnimatorPlaybackController.wrap(new AnimatorSet(), duration);
@@ -218,6 +221,24 @@
                             fakeHomeIconLeft + fakeHomeIconSizePx,
                             fakeHomeIconTop + fakeHomeIconSizePx);
                 }
+
+                @Override
+                public void update(RectF rect, float progress, float radius) {
+                    mFakeIconView.setVisibility(View.VISIBLE);
+                    mFakeIconView.update(rect, progress,
+                            1f - SHAPE_PROGRESS_DURATION /* shapeProgressStart */,
+                            radius,
+                            false, /* isOpening */
+                            mFakeIconView, mDp,
+                            false /* isVerticalBarLayout */);
+                    mFakeIconView.setAlpha(1);
+                    mFakeTaskView.setAlpha(getWindowAlpha(progress));
+                }
+
+                @Override
+                public void onCancel() {
+                    mFakeIconView.setVisibility(View.INVISIBLE);
+                }
             };
             RectFSpringAnim windowAnim = createWindowAnimationToHome(startShift, homeAnimFactory);
             windowAnim.start(mContext, velocityPxPerMs);
diff --git a/quickstep/src/com/android/quickstep/interaction/TutorialController.java b/quickstep/src/com/android/quickstep/interaction/TutorialController.java
index c1918c2..73f1f8c 100644
--- a/quickstep/src/com/android/quickstep/interaction/TutorialController.java
+++ b/quickstep/src/com/android/quickstep/interaction/TutorialController.java
@@ -28,6 +28,7 @@
 import androidx.annotation.Nullable;
 
 import com.android.launcher3.R;
+import com.android.launcher3.views.ClipIconView;
 import com.android.quickstep.interaction.EdgeBackGestureHandler.BackGestureAttemptCallback;
 import com.android.quickstep.interaction.NavBarGestureHandler.NavBarGestureAttemptCallback;
 
@@ -46,6 +47,7 @@
     final TextView mTitleTextView;
     final TextView mSubtitleTextView;
     final TextView mFeedbackView;
+    final ClipIconView mFakeIconView;
     final View mFakeTaskView;
     final View mRippleView;
     final RippleDrawable mRippleDrawable;
@@ -66,6 +68,7 @@
         mTitleTextView = rootView.findViewById(R.id.gesture_tutorial_fragment_title_view);
         mSubtitleTextView = rootView.findViewById(R.id.gesture_tutorial_fragment_subtitle_view);
         mFeedbackView = rootView.findViewById(R.id.gesture_tutorial_fragment_feedback_view);
+        mFakeIconView = rootView.findViewById(R.id.gesture_tutorial_fake_icon_view);
         mFakeTaskView = rootView.findViewById(R.id.gesture_tutorial_fake_task_view);
         mRippleView = rootView.findViewById(R.id.gesture_tutorial_ripple_view);
         mRippleDrawable = (RippleDrawable) mRippleView.getBackground();