Ignoring scrolling/zooming gestures on the bottom static line view #3

Athlee · Nov 26, 2016 · a98aa2f · a98aa2f
1 parent 9b19183
commit a98aa2f
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Showing 2 changed files with 34 additions and 8 deletions.
diff --git a/Example/Athlee-ImagePicker/Athlee-ImagePicker/CropViewController.swift b/Example/Athlee-ImagePicker/Athlee-ImagePicker/CropViewController.swift
@@ -81,7 +81,7 @@ final class CropViewController: UIViewController, FloatingViewLayout, Cropable {
     updateContent()
   }
 
-  var recognizersAdded = false
+  fileprivate var recognizersAdded = false
   override func viewDidAppear(_ animated: Bool) {
     super.viewDidAppear(animated)
 
@@ -153,10 +153,10 @@ final class CropViewController: UIViewController, FloatingViewLayout, Cropable {
   }
 
   func updateCropViewScrolling() {
-    if state == .folded || state == .moved {
-      cropView.isUserInteractionEnabled = false
+    if state == .moved {
+      delegate.isEnabled = false
     } else {
-      cropView.isUserInteractionEnabled = true
+      delegate.isEnabled = true
     }
   }
 

diff --git a/Source/CropableScrollViewDelegate.swift b/Source/CropableScrollViewDelegate.swift
@@ -16,7 +16,21 @@ open class CropableScrollViewDelegate<T: Cropable>: NSObject, UIScrollViewDelega
 
   open let linesView = LinesView()
 
-  fileprivate var panning = false
+  /// Indicates whether cropping should or should not be enabled for using.
+  open var isEnabled = true {
+    didSet {
+      if isEnabled {
+        cropable.cropView.isScrollEnabled = true
+      } else {
+        cropable.highlightArea(false, animated: false)
+        cropable.cropView.isScrollEnabled = false 
+      }
+    }
+  }
+
+  fileprivate var isPanning = false
+
+  // MARK: Initialization
 
   public init(cropable: T) {
     self.cropable = cropable
@@ -25,32 +39,42 @@ open class CropableScrollViewDelegate<T: Cropable>: NSObject, UIScrollViewDelega
   // MARK: UIScrollViewDelegate
 
   open func scrollViewWillBeginZooming(_ scrollView: UIScrollView, with view: UIView?) {
+    guard isEnabled else { return }
+
     cropable.willZoom()
   }
 
   open func scrollViewDidZoom(_ scrollView: UIScrollView) {
+    guard isEnabled else { return }
+
     cropable.didZoom()
   }
 
   open func scrollViewDidScroll(_ scrollView: UIScrollView) {
+    guard isEnabled else { return }
+
     if cropable.alwaysShowGuidelines {
       cropable.highlightArea(true)
     }
 
-    guard panning else {
+    guard isPanning else {
       return
     }
 
     cropable.highlightArea(true)
   }
 
   open func scrollViewWillBeginDragging(_ scrollView: UIScrollView) {
-    panning = true
+    guard isEnabled else { return }
+
+    isPanning = true
     cropable.highlightArea(true)
   }
 
   open func scrollViewDidEndDragging(_ scrollView: UIScrollView, willDecelerate decelerate: Bool) {
-    panning = false
+    guard isEnabled else { return }
+
+    isPanning = false
 
     if cropable.alwaysShowGuidelines {
       cropable.highlightArea(true, animated: false)
@@ -60,6 +84,8 @@ open class CropableScrollViewDelegate<T: Cropable>: NSObject, UIScrollViewDelega
   }
 
   open func scrollViewDidEndZooming(_ scrollView: UIScrollView, with view: UIView?, atScale scale: CGFloat) {
+    guard isEnabled else { return }
+
     cropable.willEndZooming()
     cropable.didEndZooming()
   }