More sensitive swipe gesture recognition

Summary: I noticed sometimes the swipeable row prioritizes the list view's vertical scroll too much, or returns to closed position if swiped a little distance but at high velocity. These new thresholds help both cases.

Reviewed By: hedgerwang

Differential Revision: D3441994

fbshipit-source-id: 84a9fdf63a33b3047a9a0205e87d8c489e9a6631

Author: fred2028

Libraries/Experimental/SwipeableRow/SwipeableRow.js

@@ -39,9 +39,9 @@ const emptyFunction = require('fbjs/lib/emptyFunction');
 // Position of the left of the swipable item when closed
 const CLOSED_LEFT_POSITION = 0;
 // Minimum swipe distance before we recognize it as such
-const HORIZONTAL_SWIPE_DISTANCE_THRESHOLD = 15;
+const HORIZONTAL_SWIPE_DISTANCE_THRESHOLD = 10;
 // Minimum swipe speed before we fully animate the user's action (open/close)
-const HORIZONTAL_FULL_SWIPE_SPEED_THRESHOLD = 0.5;
+const HORIZONTAL_FULL_SWIPE_SPEED_THRESHOLD = 0.3;
 // Factor to divide by to get slow speed; i.e. 4 means 1/4 of full speed
 const SLOW_SPEED_SWIPE_FACTOR = 4;
 // Time, in milliseconds, of how long the animated swipe should be