commit 36d10159970252a7d5399f70aa413b6e3b106fa1
author Jon Miranda <jonmiranda@google.com> Fri Jun 19 16:35:08 2020 -0700
committer Jon Miranda <jonmiranda@google.com> Fri Jun 19 16:36:57 2020 -0700
tree 72ed48f78eaa5e185455b1aa2c36e1ebe8ea5108
parent bb8257344ce620940b2a145b6275d3c1bf8591d6

Add depth animation when multiwindow mode changes.

This is a workaround until we can support app transitions when starting
an activity in mw mode.

Bug: 158613217
Change-Id: I843d6669722c543728ab532e1c4fbd4643f6f135

quickstep/src/com/android/launcher3/BaseQuickstepLauncher.java

diff --git a/quickstep/src/com/android/launcher3/BaseQuickstepLauncher.java b/quickstep/src/com/android/launcher3/BaseQuickstepLauncher.java
index d2e0339..47ce320 100644
--- a/quickstep/src/com/android/launcher3/BaseQuickstepLauncher.java
+++ b/quickstep/src/com/android/launcher3/BaseQuickstepLauncher.java
@@ -83,6 +83,7 @@
         super.onCreate(savedInstanceState);
 
         SysUINavigationMode.INSTANCE.get(this).addModeChangeListener(this);
+        addMultiWindowModeChangedListener(mDepthController);
     }
 
     @Override

quickstep/src/com/android/launcher3/statehandlers/DepthController.java

diff --git a/quickstep/src/com/android/launcher3/statehandlers/DepthController.java b/quickstep/src/com/android/launcher3/statehandlers/DepthController.java
index 2b08dcd..fe8f0c6 100644
--- a/quickstep/src/com/android/launcher3/statehandlers/DepthController.java
+++ b/quickstep/src/com/android/launcher3/statehandlers/DepthController.java
@@ -20,11 +20,15 @@
 import static com.android.launcher3.states.StateAnimationConfig.ANIM_DEPTH;
 import static com.android.launcher3.states.StateAnimationConfig.SKIP_DEPTH_CONTROLLER;
 
+import android.animation.Animator;
+import android.animation.AnimatorListenerAdapter;
+import android.animation.ObjectAnimator;
 import android.os.IBinder;
 import android.util.FloatProperty;
 import android.view.View;
 import android.view.ViewTreeObserver;
 
+import com.android.launcher3.BaseActivity;
 import com.android.launcher3.Launcher;
 import com.android.launcher3.LauncherState;
 import com.android.launcher3.R;
@@ -41,7 +45,8 @@
 /**
  * Controls blur and wallpaper zoom, for the Launcher surface only.
  */
-public class DepthController implements StateHandler<LauncherState> {
+public class DepthController implements StateHandler<LauncherState>,
+        BaseActivity.MultiWindowModeChangedListener {
 
     public static final FloatProperty<DepthController> DEPTH =
             new FloatProperty<DepthController>("depth") {
@@ -104,6 +109,9 @@
      */
     private float mDepth;
 
+    // Workaround for animating the depth when multiwindow mode changes.
+    private boolean mIgnoreStateChangesDuringMultiWindowAnimation = false;
+
     private View.OnAttachStateChangeListener mOnAttachListener;
 
     public DepthController(Launcher l) {
@@ -171,7 +179,7 @@
 
     @Override
     public void setState(LauncherState toState) {
-        if (mSurface == null) {
+        if (mSurface == null || mIgnoreStateChangesDuringMultiWindowAnimation) {
             return;
         }
 
@@ -186,7 +194,8 @@
             PendingAnimation animation) {
         if (mSurface == null
                 || config.onlyPlayAtomicComponent()
-                || config.hasAnimationFlag(SKIP_DEPTH_CONTROLLER)) {
+                || config.hasAnimationFlag(SKIP_DEPTH_CONTROLLER)
+                || mIgnoreStateChangesDuringMultiWindowAnimation) {
             return;
         }
 
@@ -231,4 +240,21 @@
                     .apply();
         }
     }
+
+    @Override
+    public void onMultiWindowModeChanged(boolean isInMultiWindowMode) {
+        mIgnoreStateChangesDuringMultiWindowAnimation = true;
+
+        ObjectAnimator mwAnimation = ObjectAnimator.ofFloat(this, DEPTH,
+                mLauncher.getStateManager().getState().getDepth(mLauncher, isInMultiWindowMode))
+                .setDuration(300);
+        mwAnimation.addListener(new AnimatorListenerAdapter() {
+            @Override
+            public void onAnimationEnd(Animator animation) {
+                mIgnoreStateChangesDuringMultiWindowAnimation = false;
+            }
+        });
+        mwAnimation.setAutoCancel(true);
+        mwAnimation.start();
+    }
 }

src/com/android/launcher3/LauncherState.java

diff --git a/src/com/android/launcher3/LauncherState.java b/src/com/android/launcher3/LauncherState.java
index 31bfc09..c78df62 100644
--- a/src/com/android/launcher3/LauncherState.java
+++ b/src/com/android/launcher3/LauncherState.java
@@ -226,7 +226,16 @@
      * 0 means completely zoomed in, without blurs. 1 is zoomed out, with blurs.
      */
     public final float getDepth(Context context) {
-        if (BaseDraggingActivity.fromContext(context).getDeviceProfile().isMultiWindowMode) {
+        return getDepth(context,
+                BaseDraggingActivity.fromContext(context).getDeviceProfile().isMultiWindowMode);
+    }
+
+    /**
+     * Returns the amount of blur and wallpaper zoom for this state with {@param isMultiWindowMode}.
+     * @see #getDepth(Context).
+     */
+    public final float getDepth(Context context, boolean isMultiWindowMode) {
+        if (isMultiWindowMode) {
             return 0;
         }
         return getDepthUnchecked(context);