Increasing the min swipe thresholds for the nav bar gestures. (Bug 17109581)

Change-Id: I1bcf6f91f616890f0e815db33267c5230ae9c76f
(cherry picked from commit 559e6d34b4e76ee21dc6e300681c399ed735a964)

3 files changed, 10 insertions, 4 deletions

diff --git a/packages/SystemUI/res/values/dimens.xml b/packages/SystemUI/res/values/dimens.xml
index 4f41cd5..fabdf29 100644
--- a/packages/SystemUI/res/values/dimens.xml
+++ b/packages/SystemUI/res/values/dimens.xml
@@ -63,6 +63,8 @@
 
     <!-- thickness (height) of the navigation bar on phones that require it -->
     <dimen name="navigation_bar_size">@*android:dimen/navigation_bar_height</dimen>
+    <!-- Minimum swipe distance to catch the swipe gestures to invoke assist or switch tasks. -->
+    <dimen name="navigation_bar_min_swipe_distance">48dp</dimen>
 
     <!-- thickness (height) of the dead zone at the top of the navigation bar,
          reducing false presses on navbar buttons; approx 2mm -->
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/DelegateViewHelper.java b/packages/SystemUI/src/com/android/systemui/statusbar/DelegateViewHelper.java
index 628aab8..7ae6764 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/DelegateViewHelper.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/DelegateViewHelper.java
@@ -17,10 +17,11 @@
 package com.android.systemui.statusbar;
 
 import android.app.StatusBarManager;
+import android.content.res.Resources;
 import android.graphics.RectF;
 import android.view.MotionEvent;
 import android.view.View;
-import android.view.ViewConfiguration;
+import com.android.systemui.R;
 
 public class DelegateViewHelper {
     private View mDelegateView;
@@ -106,8 +107,8 @@ public class DelegateViewHelper {
     public void setSourceView(View view) {
         mSourceView = view;
         if (mSourceView != null) {
-            mTriggerThreshhold =
-                    ViewConfiguration.get(mSourceView.getContext()).getScaledPagingTouchSlop();
+            Resources r = mSourceView.getContext().getResources();
+            mTriggerThreshhold = r.getDimensionPixelSize(R.dimen.navigation_bar_min_swipe_distance);
         }
     }
 
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarViewTaskSwitchHelper.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarViewTaskSwitchHelper.java
index c253e19..fdfcdfb 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarViewTaskSwitchHelper.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarViewTaskSwitchHelper.java
@@ -17,9 +17,11 @@
 package com.android.systemui.statusbar.phone;
 
 import android.content.Context;
+import android.content.res.Resources;
 import android.view.GestureDetector;
 import android.view.MotionEvent;
 import android.view.ViewConfiguration;
+import com.android.systemui.R;
 import com.android.systemui.statusbar.BaseStatusBar;
 
 public class NavigationBarViewTaskSwitchHelper extends GestureDetector.SimpleOnGestureListener {
@@ -36,7 +38,8 @@ public class NavigationBarViewTaskSwitchHelper extends GestureDetector.SimpleOnG
 
     public NavigationBarViewTaskSwitchHelper(Context context) {
         ViewConfiguration configuration = ViewConfiguration.get(context);
-        mScrollTouchSlop = 4 * configuration.getScaledTouchSlop();
+        Resources r = context.getResources();
+        mScrollTouchSlop = r.getDimensionPixelSize(R.dimen.navigation_bar_min_swipe_distance);
         mMinFlingVelocity = configuration.getScaledMinimumFlingVelocity();
         mTaskSwitcherDetector = new GestureDetector(context, this);
     }