Support to UI Rotation

Pod/Classes/EPSignatureView.swift

@@ -15,8 +15,6 @@ open class EPSignatureView: UIView {
     fileprivate var bezierPoints = [CGPoint](repeating: CGPoint(), count: 5)
     fileprivate var bezierPath = UIBezierPath()
     fileprivate var bezierCounter : Int = 0
-    fileprivate var maxPoint = CGPoint.zero
-    fileprivate var minPoint = CGPoint.zero
 
     // MARK: - Public Vars
 
@@ -31,15 +29,13 @@ open class EPSignatureView: UIView {
         self.backgroundColor = UIColor.clear
         bezierPath.lineWidth = strokeWidth
         addLongPressGesture()
-        minPoint = CGPoint(x: self.frame.size.width,y: self.frame.size.height)
     }
 
     public override init(frame: CGRect) {
         super.init(frame: frame)
         self.backgroundColor = UIColor.clear
         bezierPath.lineWidth = strokeWidth
         addLongPressGesture()
-        minPoint = CGPoint(x: self.frame.size.width,y: self.frame.size.height)
     }
 
     override open func draw(_ rect: CGRect) {
@@ -61,7 +57,7 @@ open class EPSignatureView: UIView {
 
     func longPressed(_ gesture: UILongPressGestureRecognizer) {
         let touchPoint = gesture.location(in: self)
-        let endAngle = CGFloat(2.0 * M_PI)
+        let endAngle: CGFloat = .pi * 2.0
         bezierPath.move(to: touchPoint)
         bezierPath.addArc(withCenter: touchPoint, radius: 2, startAngle: 0, endAngle: endAngle, clockwise: true)
         setNeedsDisplay()
@@ -100,21 +96,7 @@ open class EPSignatureView: UIView {
 
     func touchPoint(_ touches: Set<UITouch>) -> CGPoint? {
         if let touch = touches.first {
-            let point = touch.location(in: self)
-            //Track the signature bounding area
-            if point.x > maxPoint.x {
-                maxPoint.x = point.x
-            }
-            if point.y > maxPoint.y {
-                maxPoint.y = point.y
-            }
-            if point.x < minPoint.x {
-                minPoint.x = point.x
-            }
-            if point.y < minPoint.y {
-                minPoint.y = point.y
-            }
-            return point
+            return touch.location(in: self)
         }
         return nil
     }
@@ -129,6 +111,16 @@ open class EPSignatureView: UIView {
         setNeedsDisplay()
     }
 
+    /** scales and repositions the path
+     */
+    open func reposition() {
+        var ratio =  min(self.bounds.width / bezierPath.bounds.width, 1)
+        ratio =  min((self.bounds.height - 64) / bezierPath.bounds.height, ratio)
+        bezierPath.apply(CGAffineTransform(scaleX: ratio, y: ratio))
+        bezierPath.apply(CGAffineTransform(translationX: -bezierPath.bounds.origin.x, y: -bezierPath.bounds.origin.y + 64))
+        setNeedsDisplay()
+    }
+
     /** Returns the drawn path as Image. Adding subview to this view will also get returned in this image.
      */
     open func getSignatureAsImage() -> UIImage? {
@@ -146,7 +138,7 @@ open class EPSignatureView: UIView {
      */
 
     open func getSignatureBoundsInCanvas() -> CGRect {
-        return CGRect(x: minPoint.x, y: minPoint.y, width: maxPoint.x - minPoint.x, height: maxPoint.y - minPoint.y)
+        return bezierPath.bounds
     }
 
     //MARK: Save load signature methods

Pod/Classes/EPSignatureViewController.swift

@@ -145,4 +145,7 @@ open class EPSignatureViewController: UIViewController {
         signatureView.clear()
     }
 
+    override open func didRotate(from fromInterfaceOrientation: UIInterfaceOrientation) {
+        signatureView.reposition()
+    }
 }