Changing the interaction model of the touch explorer.

1. Now the user have to double tap to activate the last
   item. If the last touched window is not active because
   it does not take input focus the click on the last
   touch explored location. Othewise the click is on the
   accessibility focus location.

bug:5932640

Change-Id: Ibb7b97262a7c5f2f94abef429e02790fdc91a8dd

1 files changed, 1 insertions, 22 deletions

diff --git a/core/java/android/view/ViewConfiguration.java b/core/java/android/view/ViewConfiguration.java
index 913496685302..823befb22f7b 100644
--- a/core/java/android/view/ViewConfiguration.java
+++ b/core/java/android/view/ViewConfiguration.java
@@ -193,19 +193,12 @@ public class ViewConfiguration {
     private static final int MAXIMUM_FLING_VELOCITY = 8000;
 
     /**
-     * Distance in dips between a touch up event denoting the end of a touch exploration
-     * gesture and the touch up event of a subsequent tap for the latter tap to be
-     * considered as a tap i.e. to perform a click.
-     */
-    private static final int TOUCH_EXPLORE_TAP_SLOP = 80;
-
-    /**
      * Delay before dispatching a recurring accessibility event in milliseconds.
      * This delay guarantees that a recurring event will be send at most once
      * during the {@link #SEND_RECURRING_ACCESSIBILITY_EVENTS_INTERVAL_MILLIS} time
      * frame.
      */
-    private static final long SEND_RECURRING_ACCESSIBILITY_EVENTS_INTERVAL_MILLIS = 400;
+    private static final long SEND_RECURRING_ACCESSIBILITY_EVENTS_INTERVAL_MILLIS = 100;
 
     /**
      * The maximum size of View's drawing cache, expressed in bytes. This size
@@ -238,7 +231,6 @@ public class ViewConfiguration {
     private final int mDoubleTapTouchSlop;
     private final int mPagingTouchSlop;
     private final int mDoubleTapSlop;
-    private final int mScaledTouchExploreTapSlop;
     private final int mWindowTouchSlop;
     private final int mMaximumDrawingCacheSize;
     private final int mOverscrollDistance;
@@ -265,7 +257,6 @@ public class ViewConfiguration {
         mDoubleTapTouchSlop = DOUBLE_TAP_TOUCH_SLOP;
         mPagingTouchSlop = PAGING_TOUCH_SLOP;
         mDoubleTapSlop = DOUBLE_TAP_SLOP;
-        mScaledTouchExploreTapSlop = TOUCH_EXPLORE_TAP_SLOP;
         mWindowTouchSlop = WINDOW_TOUCH_SLOP;
         //noinspection deprecation
         mMaximumDrawingCacheSize = MAXIMUM_DRAWING_CACHE_SIZE;
@@ -302,7 +293,6 @@ public class ViewConfiguration {
         mMaximumFlingVelocity = (int) (density * MAXIMUM_FLING_VELOCITY + 0.5f);
         mScrollbarSize = (int) (density * SCROLL_BAR_SIZE + 0.5f);
         mDoubleTapSlop = (int) (sizeAndDensity * DOUBLE_TAP_SLOP + 0.5f);
-        mScaledTouchExploreTapSlop = (int) (density * TOUCH_EXPLORE_TAP_SLOP + 0.5f);
         mWindowTouchSlop = (int) (sizeAndDensity * WINDOW_TOUCH_SLOP + 0.5f);
 
         final Display display = WindowManagerImpl.getDefault().getDefaultDisplay();
@@ -553,17 +543,6 @@ public class ViewConfiguration {
     }
 
     /**
-     * @return Distance in pixels between a touch up event denoting the end of a touch exploration
-     * gesture and the touch up event of a subsequent tap for the latter tap to be
-     * considered as a tap i.e. to perform a click.
-     *
-     * @hide
-     */
-    public int getScaledTouchExploreTapSlop() {
-        return mScaledTouchExploreTapSlop;
-    }
-
-    /**
      * Interval for dispatching a recurring accessibility event in milliseconds.
      * This interval guarantees that a recurring event will be send at most once
      * during the {@link #getSendRecurringAccessibilityEventsInterval()} time frame.