Merge pull request ECSlidingViewController#83 from GateGuru/velocity

Add property to allow configuration of the velocity threshold used to de...

Author: enriquez

ECSlidingViewController/Vendor/ECSlidingViewController/ECSlidingViewController.h

@@ -159,6 +159,12 @@ typedef enum {
  */
 @property (nonatomic, assign) ECResetStrategy resetStrategy;
 
+/** Returns the X-axis velocity threshold used for determining whether or not to process a pan to the left or right
+
+ By default, this is set to 100
+ */
+@property (nonatomic, assign) NSUInteger panningVelocityXThreshold;
+
 /** Returns a horizontal panning gesture for moving the top view.
  
  This is typically added to the top view or a top view's navigation bar.

ECSlidingViewController/Vendor/ECSlidingViewController/ECSlidingViewController.m

@@ -181,6 +181,7 @@ - (void)viewDidLoad
   _panGesture          = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(updateTopViewHorizontalCenterWithRecognizer:)];
   self.resetTapGesture.enabled = NO;
   self.resetStrategy = ECTapping | ECPanning;
+  self.panningVelocityXThreshold = 100;
 
   self.topViewSnapshot = [[UIView alloc] initWithFrame:self.topView.bounds];
   [self.topViewSnapshot setAutoresizingMask:self.autoResizeToFillScreen];
@@ -273,9 +274,9 @@ - (void)updateTopViewHorizontalCenterWithRecognizer:(UIPanGestureRecognizer *)re
     CGPoint currentVelocityPoint = [recognizer velocityInView:self.view];
     CGFloat currentVelocityX     = currentVelocityPoint.x;
 
-    if ([self underLeftShowing] && currentVelocityX > 100) {
+    if ([self underLeftShowing] && currentVelocityX > self.panningVelocityXThreshold) {
       [self anchorTopViewTo:ECRight];
-    } else if ([self underRightShowing] && currentVelocityX < 100) {
+    } else if ([self underRightShowing] && currentVelocityX <= self.panningVelocityXThreshold) {
       [self anchorTopViewTo:ECLeft];
     } else {
       [self resetTopView];