Fixing accessibility arrow

> Hiding arrow in background state and during quick switch
> Preventing arrow overlapping with search box in overview state

Bug: 135885458
Change-Id: Iadefba044717351d69480cde7d784cd04289d086

1 files changed, 15 insertions, 4 deletions

diff --git a/quickstep/src/com/android/quickstep/views/ShelfScrimView.java b/quickstep/src/com/android/quickstep/views/ShelfScrimView.java
index b6ddb5fd1..63c8023f6 100644
--- a/quickstep/src/com/android/quickstep/views/ShelfScrimView.java
+++ b/quickstep/src/com/android/quickstep/views/ShelfScrimView.java
@@ -15,6 +15,7 @@
  */
 package com.android.quickstep.views;
 
+import static com.android.launcher3.LauncherState.ALL_APPS_HEADER_EXTRA;
 import static com.android.launcher3.LauncherState.BACKGROUND_APP;
 import static com.android.launcher3.LauncherState.OVERVIEW;
 import static com.android.launcher3.anim.Interpolators.ACCEL;
@@ -29,6 +30,7 @@ import android.graphics.Paint;
 import android.graphics.Path;
 import android.graphics.Path.Direction;
 import android.graphics.Path.Op;
+import android.graphics.Rect;
 import android.util.AttributeSet;
 import android.view.animation.Interpolator;
 
@@ -36,6 +38,7 @@ import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.R;
 import com.android.launcher3.Utilities;
 import com.android.launcher3.anim.Interpolators;
+import com.android.launcher3.uioverrides.states.OverviewState;
 import com.android.launcher3.util.Themes;
 import com.android.launcher3.views.ScrimView;
 import com.android.quickstep.SysUINavigationMode;
@@ -145,14 +148,22 @@ public class ShelfScrimView extends ScrimView implements NavigationModeChangeLis
             mRemainingScreenPathValid = false;
             mShiftRange = mLauncher.getAllAppsController().getShiftRange();
 
-            mMidProgress = OVERVIEW.getVerticalProgress(mLauncher);
-            mMidAlpha = mMidProgress >= 1 ? 0
-                    : Themes.getAttrInteger(getContext(), R.attr.allAppsInterimScrimAlpha);
+            if ((OVERVIEW.getVisibleElements(mLauncher) & ALL_APPS_HEADER_EXTRA) == 0) {
+                mMidProgress = 1;
+                mMidAlpha = 0;
+            } else {
+                mMidAlpha = Themes.getAttrInteger(getContext(), R.attr.allAppsInterimScrimAlpha);
+                Rect hotseatPadding = dp.getHotseatLayoutPadding();
+                int hotseatSize = dp.hotseatBarSizePx + dp.getInsets().bottom
+                        - hotseatPadding.bottom - hotseatPadding.top;
+                float arrowTop = Math.min(hotseatSize, OverviewState.getDefaultSwipeHeight(dp));
+                mMidProgress =  1 - (arrowTop / mShiftRange);
 
+            }
             mTopOffset = dp.getInsets().top - mShelfOffset;
             mShelfTopAtThreshold = mShiftRange * SCRIM_CATCHUP_THRESHOLD + mTopOffset;
-            updateColors();
         }
+        updateColors();
         updateDragHandleAlpha();
         invalidate();
     }