Rewrite CustomEdgeSwipeGestureRecognizer to fix unexpected session disconnect, and for future configuration

Limelight/ViewControllers/CustomEdgeSwipeGestureRecognizer.m

@@ -11,53 +11,52 @@
 #import "CustomEdgeSwipeGestureRecognizer.h"
 #import <UIKit/UIGestureRecognizerSubclass.h>
 
-@implementation CustomEdgeSwipeGestureRecognizer {
-    CGPoint _startPoint;
-    CGFloat _nomarlizedswipeThreshold;
+@implementation CustomEdgeSwipeGestureRecognizer
+UITouch* capturedUITouch;
+CGFloat _startPointX;
+static CGFloat screenWidthInPoints;
+static CGFloat EDGE_TOLERANCE_POINTS = 50.0f;
+
+- (instancetype)initWithTarget:(nullable id)target action:(nullable SEL)action {
+    self = [super initWithTarget:target action:action];
+    screenWidthInPoints = CGRectGetWidth([[UIScreen mainScreen] bounds]); // Get the screen's bounds (in points)
+    return self;
 }
 
 - (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
     [super touchesBegan:touches withEvent:event];
-    
     UITouch *touch = [touches anyObject];
-    _startPoint = [touch locationInView:self.view];
-    // Log(LOG_I, @"start point x: %f", _startPoint.x);
+    capturedUITouch = touch;
+    _startPointX = [capturedUITouch locationInView:self.view].x;
 }
 
-
 - (void)touchesEnded:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
-    CGRect screenBounds = [[UIScreen mainScreen] bounds];// Get the screen's bounds (in points)
-    CGFloat screenWidthInPoints = CGRectGetWidth(screenBounds);
-    // CGFloat screenHeightInPoints = CGRectGetHeight(screenBounds);
-    // Log the screen resolution
-    // NSLog(@"Screen resolution: %.0f x %.0f points", screenWidthInPoints, screenHeightInPoints);
-
+    [super touchesEnded:touches withEvent:event];
     
-    [super touchesMoved:touches withEvent:event];
-    UITouch *touch = [touches anyObject];
-    CGPoint gestureEndPoint = [touch locationInView:self.view];
-    CGFloat nomarlizedGestureEndPointX = gestureEndPoint.x/screenWidthInPoints;
-    CGFloat nomarlizedStartPointX = _startPoint.x/screenWidthInPoints;
-    // CGFloat nomarlizedgestureEndPointYDelta = (gestureEndPoint.y-_startPoint.y)/screenHeightInPoints;
-    // Log(LOG_I, @"current point x: %f", nomarlizedgestureEndPointXDelta);
-    // NSLog(@"in CUSTOM swipe REC");
-    // NSLog(@"startpointX %f", _startPoint.x);
-    // NSLog(@"NorXDelta %f", nomarlizedGestureEndPointX);
-    _nomarlizedswipeThreshold = 0.5; // You need swipe half of screen width from left edge to trigger this Recognizer
-    if (nomarlizedStartPointX <= 0.025 && nomarlizedGestureEndPointX > _nomarlizedswipeThreshold) {
-        // Detected a swipe from the left edge that exceeds _nomarlizedswipeThreshold
-        if (self.state == UIGestureRecognizerStatePossible) {
-            self.state = UIGestureRecognizerStateBegan;
+    if([touches containsObject:capturedUITouch]){
+        CGFloat _endPointX = [capturedUITouch locationInView:self.view].x;
+        CGFloat normalizedGestureDistance = fabs(_endPointX - _startPointX)/screenWidthInPoints;
+        
+        if(self.edges & UIRectEdgeLeft){
+            if(_startPointX < EDGE_TOLERANCE_POINTS && normalizedGestureDistance > _normalizedThresholdDistance){
+                self.state = UIGestureRecognizerStateBegan;
+                self.state = UIGestureRecognizerStateEnded;
+            }
+            // NSLog(@"_startPointX  %f , normalizedGestureDeltaX %f", _startPointX,  normalizedGestureDistance);
+        }
+        if(self.edges & UIRectEdgeRight){
+            if((_startPointX > (screenWidthInPoints - EDGE_TOLERANCE_POINTS)) && normalizedGestureDistance > _normalizedThresholdDistance){
+                self.state = UIGestureRecognizerStateBegan;
+                self.state = UIGestureRecognizerStateEnded;
+            }
+           // NSLog(@"_startPointX  %f , normalizedGestureDeltaX %f", _startPointX,  normalizedGestureDistance);
         }
-    } else {
-        self.state = UIGestureRecognizerStateFailed;
     }
 }
 
-- (void)touchesCancelled:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
-    [super touchesCancelled:touches withEvent:event];
-    
-    self.state = UIGestureRecognizerStateFailed;
-}
-
 @end
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