From 4ba48cdb8b35ba93d70303a4c24ded03ff731927 Mon Sep 17 00:00:00 2001
From: Nick Chameyev <nickchameyev@google.com>
Date: Fri, 13 Aug 2021 14:41:19 +0100
Subject: [PATCH] Add quick search bar width unfold animation

Adds unfold animation to quick search bar in launcher
which changes the width of the quick search bar
from 70% to 100%.

Bug: 193795041
Test: manual
Change-Id: I8c55ca1cc5b5894847503beac8ecd8adec3e5674
---
 .../LauncherUnfoldAnimationController.java    | 33 +++++++++++++++--
 .../util/HorizontalInsettableView.java        | 35 +++++++++++++++++++
 2 files changed, 65 insertions(+), 3 deletions(-)
 create mode 100644 src/com/android/launcher3/util/HorizontalInsettableView.java

diff --git a/quickstep/src/com/android/quickstep/util/LauncherUnfoldAnimationController.java b/quickstep/src/com/android/quickstep/util/LauncherUnfoldAnimationController.java
index ea1ece86d4..d0fb9e5901 100644
--- a/quickstep/src/com/android/quickstep/util/LauncherUnfoldAnimationController.java
+++ b/quickstep/src/com/android/quickstep/util/LauncherUnfoldAnimationController.java
@@ -15,10 +15,15 @@
  */
 package com.android.quickstep.util;
 
+import static com.android.launcher3.Utilities.comp;
+
+import android.annotation.Nullable;
 import android.view.ViewTreeObserver;
 import android.view.WindowManager;
 
+import com.android.launcher3.Hotseat;
 import com.android.launcher3.Launcher;
+import com.android.launcher3.util.HorizontalInsettableView;
 import com.android.unfold.UnfoldTransitionProgressProvider;
 import com.android.unfold.UnfoldTransitionProgressProvider.TransitionProgressListener;
 
@@ -27,10 +32,17 @@ import com.android.unfold.UnfoldTransitionProgressProvider.TransitionProgressLis
  */
 public class LauncherUnfoldAnimationController {
 
+    // Percentage of the width of the quick search bar that will be reduced
+    // from the both sides of the bar when progress is 0
+    private static final float MAX_WIDTH_INSET_FRACTION = 0.15f;
+
     private final Launcher mLauncher;
     private final UnfoldTransitionProgressProvider mUnfoldTransitionProgressProvider;
     private final UnfoldMoveFromCenterWorkspaceAnimator mMoveFromCenterWorkspaceAnimation;
 
+    @Nullable
+    private HorizontalInsettableView mQsbInsettable;
+
     private final AnimationListener mAnimationListener = new AnimationListener();
 
     private boolean mIsTransitionRunning = false;
@@ -51,6 +63,11 @@ public class LauncherUnfoldAnimationController {
      * Called when launcher is resumed
      */
     public void onResume() {
+        Hotseat hotseat = mLauncher.getHotseat();
+        if (hotseat != null && hotseat.getQsb() instanceof HorizontalInsettableView) {
+            mQsbInsettable = (HorizontalInsettableView) hotseat.getQsb();
+        }
+
         final ViewTreeObserver obs = mLauncher.getWorkspace().getViewTreeObserver();
         obs.addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() {
             @Override
@@ -68,12 +85,13 @@ public class LauncherUnfoldAnimationController {
      * Called when launcher activity is paused
      */
     public void onPause() {
-        mIsReadyToPlayAnimation = false;
-
         if (mIsTransitionRunning) {
             mIsTransitionRunning = false;
-            mMoveFromCenterWorkspaceAnimation.onTransitionFinished();
+            mAnimationListener.onTransitionFinished();
         }
+
+        mIsReadyToPlayAnimation = false;
+        mQsbInsettable = null;
     }
 
     /**
@@ -109,6 +127,10 @@ public class LauncherUnfoldAnimationController {
         public void onTransitionFinished() {
             if (mIsReadyToPlayAnimation) {
                 mMoveFromCenterWorkspaceAnimation.onTransitionFinished();
+
+                if (mQsbInsettable != null) {
+                    mQsbInsettable.setHorizontalInsets(0);
+                }
             }
 
             mIsTransitionRunning = false;
@@ -117,6 +139,11 @@ public class LauncherUnfoldAnimationController {
         @Override
         public void onTransitionProgress(float progress) {
             mMoveFromCenterWorkspaceAnimation.onTransitionProgress(progress);
+
+            if (mQsbInsettable != null) {
+                float insetPercentage = comp(progress) * MAX_WIDTH_INSET_FRACTION;
+                mQsbInsettable.setHorizontalInsets(insetPercentage);
+            }
         }
     }
 }
diff --git a/src/com/android/launcher3/util/HorizontalInsettableView.java b/src/com/android/launcher3/util/HorizontalInsettableView.java
new file mode 100644
index 0000000000..7979bc0f25
--- /dev/null
+++ b/src/com/android/launcher3/util/HorizontalInsettableView.java
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2021 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.util;
+
+/**
+ * Allows the implementing view to add insets to the left and right.
+ */
+public interface HorizontalInsettableView {
+
+    /**
+     * Sets left and right insets for the view so it looks like the width of the view is
+     * reduced when inset is increased.
+     *
+     * The inset is calculated based on the width of the view: e.g. when the width of
+     * the view is 100px then if we apply 0.15f horizontal inset percentage the rendered width
+     * of the view will be 70px with 15px of padding on the left and right sides.
+     *
+     * @param insetPercentage width percentage to inset the content from the left and from the right
+     */
+    void setHorizontalInsets(float insetPercentage);
+
+}