Add shadow to sidemenu

Source/SideMenuController+CustomTypes.swift

@@ -48,6 +48,9 @@ public extension SideMenuController {
             public var sidePanelWidth: CGFloat = 300
             public var centerPanelOverlayColor = UIColor(hue:0.15, saturation:0.21, brightness:0.17, alpha:0.6)
             public var centerPanelShadow = false
+            public var sidePanelShadow = false
+            public var menuButtonSize = CGSize(width: 40, height: 40)
+            public var menuButtonSeparatorWidth = CGFloat(-10)
         }
 
         public struct Animating {

Source/SideMenuController+SideOver.swift

@@ -105,6 +105,19 @@ extension SideMenuController {
         }
     }
 
+    func setShadowFromSideMenu(hidden: Bool) {
+
+        guard _preferences.drawing.sidePanelShadow else {
+            return
+        }
+
+        if hidden {
+            sidePanel.layer.shadowOpacity = 0.0
+        } else {
+            sidePanel.layer.shadowOpacity = 0.8
+        }
+    }
+
     func setAboveSidePanel(hidden: Bool, completion: ((Bool) -> ())? = nil){
 
         var destinationFrame = sidePanel.frame

Source/SideMenuController.swift

@@ -205,6 +205,17 @@ open class SideMenuController: UIViewController, UIGestureRecognizerDelegate {
 
     // MARK: - Configurations -
 
+    func configureSideMenuShadow() {
+        guard _preferences.drawing.sidePanelShadow else {
+            return
+        }
+        sidePanel.layer.shadowOffset = CGSize(width: 18, height: 0)
+        sidePanel.layer.shadowRadius = 20
+        sidePanel.layer.shadowOpacity = 0.9
+        sidePanel.layer.shadowColor = UIColor.black.cgColor
+        sidePanel.layer.masksToBounds = false
+    }
+
     func repositionViews() {
 
         if sidePanelVisible {
@@ -242,6 +253,7 @@ open class SideMenuController: UIViewController, UIGestureRecognizerDelegate {
         sidePanel = UIView(frame: sidePanelFrame)
         view.addSubview(sidePanel)
         sidePanel.clipsToBounds = true
+        configureSideMenuShadow()
 
         if sidePanelPosition.isPositionedUnder {
             view.sendSubview(toBack: sidePanel)
@@ -305,6 +317,7 @@ open class SideMenuController: UIViewController, UIGestureRecognizerDelegate {
             }else if !display {
                 centerPanelOverlay.removeFromSuperview()
             }
+            setShadowFromSideMenu(hidden: !display)
         } else {
             setSideShadow(hidden: !display)
         }

Source/UIKitExtensions.swift

@@ -43,7 +43,8 @@ public extension UINavigationController {
             return
         }
 
-        let button = UIButton(frame: CGRect(x: 0, y: 0, width: 40, height: 40))
+        let buttonSize = SideMenuController.preferences.drawing.menuButtonSize
+        let button = UIButton(frame: CGRect(x: 0, y: 0, width: buttonSize.width, height: buttonSize.height))
         button.accessibilityIdentifier = SideMenuController.preferences.interaction.menuButtonAccessibilityIdentifier
         button.setImage(image, for: .normal)
         button.addTarget(sideMenuController, action: #selector(SideMenuController.toggle), for: UIControlEvents.touchUpInside)
@@ -75,7 +76,7 @@ public extension UINavigationController {
         item.customView = button
 
         let spacer = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.fixedSpace, target: nil, action: nil)
-        spacer.width = -10
+        spacer.width = SideMenuController.preferences.drawing.menuButtonSeparatorWidth
 
         items.append(contentsOf: positionLeft ? [spacer, item] : [item, spacer])
         return items