Add optional removalInteractionVelocityThreshold value to Behavior (#425)

Added an optional variable `removalInteractionVelocityThreshold` to `Behavior`, which let’s the user configure the velocity threshold for the default `floatingPanel:shouldRemoveAt:with` implementation.

Author: Argent

Sources/Behavior.swift

@@ -43,6 +43,12 @@ public protocol FloatingPanelBehavior {
     /// This method allows a panel to activate the rubber band effect to a given edge of the surface view. By default, the effect is disabled.
     @objc optional
     func allowsRubberBanding(for edge: UIRectEdge) -> Bool
+    
+    /// Returns the velocity threshold for the default interactive removal gesture.
+    ///
+    /// In case `floatingPanel:shouldRemoveAt:with` is implemented, this value will not be used. The default value of `FloatingPanelDefaultBehavior` is 5.5
+    @objc optional
+    var removalInteractionVelocityThreshold: CGFloat { get }
 }
 
 /// The default behavior object for a panel
@@ -70,6 +76,8 @@ open class FloatingPanelDefaultBehavior: FloatingPanelBehavior {
     open func allowsRubberBanding(for edge: UIRectEdge) -> Bool {
         return false
     }
+    
+    open var removalInteractionVelocityThreshold: CGFloat = 5.5
 }
 
 class BehaviorAdapter {
@@ -92,6 +100,10 @@ class BehaviorAdapter {
     var momentumProjectionRate: CGFloat {
         behavior.momentumProjectionRate ?? FloatingPanelDefaultBehavior().momentumProjectionRate
     }
+    
+    var removalInteractionVelocityThreshold: CGFloat {
+        behavior.removalInteractionVelocityThreshold ?? FloatingPanelDefaultBehavior().removalInteractionVelocityThreshold
+    }
 
     func redirectionalProgress(from: FloatingPanelState, to: FloatingPanelState) -> CGFloat {
         behavior.redirectionalProgress?(vc, from: from, to: to) ?? FloatingPanelDefaultBehavior().redirectionalProgress(vc,from: from, to: to)

Sources/Core.swift

@@ -713,7 +713,7 @@ class Core: NSObject, UIGestureRecognizerDelegate {
         if let result = vc.delegate?.floatingPanel?(vc, shouldRemoveAt: vc.surfaceLocation, with: velocityVector) {
             return result
         }
-        let threshold = CGFloat(5.5)
+        let threshold = behaviorAdapter.removalInteractionVelocityThreshold
         switch layoutAdapter.position {
         case .top:
             return (velocityVector.dy <= -threshold)