Fix bugs with hotseat in overview

- Allow touches to go through recents to the hotseat.
- Translate the hotseat with the all apps shelf when swiping
  up in background app state.

Bug: 135222111
Change-Id: Ib887fc25ccfeb406a44074198c11f7b1d245443c

2 files changed, 26 insertions, 4 deletions

diff --git a/src/com/android/launcher3/allapps/AllAppsTransitionController.java b/src/com/android/launcher3/allapps/AllAppsTransitionController.java
index c62fc3d8f..a351b9ae1 100644
--- a/src/com/android/launcher3/allapps/AllAppsTransitionController.java
+++ b/src/com/android/launcher3/allapps/AllAppsTransitionController.java
@@ -2,6 +2,8 @@ package com.android.launcher3.allapps;
 
 import static com.android.launcher3.LauncherState.ALL_APPS_CONTENT;
 import static com.android.launcher3.LauncherState.ALL_APPS_HEADER_EXTRA;
+import static com.android.launcher3.LauncherState.BACKGROUND_APP;
+import static com.android.launcher3.LauncherState.HOTSEAT_ICONS;
 import static com.android.launcher3.LauncherState.OVERVIEW;
 import static com.android.launcher3.LauncherState.VERTICAL_SWIPE_INDICATOR;
 import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_ALL_APPS_FADE;
@@ -28,15 +30,12 @@ import com.android.launcher3.ProgressInterface;
 import com.android.launcher3.R;
 import com.android.launcher3.anim.AnimationSuccessListener;
 import com.android.launcher3.anim.AnimatorSetBuilder;
-import com.android.launcher3.anim.SpringObjectAnimator;
 import com.android.launcher3.anim.PropertySetter;
+import com.android.launcher3.anim.SpringObjectAnimator;
 import com.android.launcher3.testing.TestProtocol;
-import com.android.launcher3.util.MultiValueAlpha;
 import com.android.launcher3.util.Themes;
 import com.android.launcher3.views.ScrimView;
 
-import androidx.dynamicanimation.animation.FloatPropertyCompat;
-
 /**
  * Handles AllApps view transition.
  * 1) Slides all apps view using direct manipulation
@@ -139,6 +138,15 @@ public class AllAppsTransitionController implements StateHandler, OnDeviceProfil
         } else {
             mLauncher.getSystemUiController().updateUiState(UI_STATE_ALL_APPS, 0);
         }
+
+        if ((OVERVIEW.getVisibleElements(mLauncher) & HOTSEAT_ICONS) != 0) {
+            // Translate hotseat with the shelf until reaching overview.
+            float overviewProgress = OVERVIEW.getVerticalProgress(mLauncher);
+            if (progress >= overviewProgress || mLauncher.isInState(BACKGROUND_APP)) {
+                float hotseatShift = (progress - overviewProgress) * mShiftRange;
+                mLauncher.getHotseat().setTranslationY(hotseatShift);
+            }
+        }
     }
 
     @Override
diff --git a/src/com/android/launcher3/views/BaseDragLayer.java b/src/com/android/launcher3/views/BaseDragLayer.java
index ac152dbff..51c7022bd 100644
--- a/src/com/android/launcher3/views/BaseDragLayer.java
+++ b/src/com/android/launcher3/views/BaseDragLayer.java
@@ -116,11 +116,25 @@ public abstract class BaseDragLayer<T extends Context & ActivityContext>
         mMultiValueAlpha = new MultiValueAlpha(this, alphaChannelCount);
     }
 
+    /**
+     * Same as {@link #isEventOverView(View, MotionEvent, View)} where evView == this drag layer.
+     */
     public boolean isEventOverView(View view, MotionEvent ev) {
         getDescendantRectRelativeToSelf(view, mHitRect);
         return mHitRect.contains((int) ev.getX(), (int) ev.getY());
     }
 
+    /**
+     * Given a motion event in evView's coordinates, return whether the event is within another
+     * view's bounds.
+     */
+    public boolean isEventOverView(View view, MotionEvent ev, View evView) {
+        int[] xy = new int[] {(int) ev.getX(), (int) ev.getY()};
+        getDescendantCoordRelativeToSelf(evView, xy);
+        getDescendantRectRelativeToSelf(view, mHitRect);
+        return mHitRect.contains(xy[0], xy[1]);
+    }
+
     @Override
     public boolean onInterceptTouchEvent(MotionEvent ev) {
         int action = ev.getAction();