Merge branch 'master' into customDirection

SlidableImage.xcodeproj/project.pbxproj

@@ -14,6 +14,7 @@
 		D55BB1951CB97A10000B2875 /* LaunchScreen.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = D55BB1931CB97A10000B2875 /* LaunchScreen.storyboard */; };
 		D55BB1A01CB97A10000B2875 /* SlidableImageTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = D55BB19F1CB97A10000B2875 /* SlidableImageTests.swift */; };
 		D565D0A51DCD6B2D0028788A /* SlidableImage.swift in Sources */ = {isa = PBXBuildFile; fileRef = D565D0A41DCD6B2D0028788A /* SlidableImage.swift */; };
+		D5C164DA1E07260700606F9F /* ArrowsView.swift in Sources */ = {isa = PBXBuildFile; fileRef = D5C164D91E07260700606F9F /* ArrowsView.swift */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
@@ -38,6 +39,7 @@
 		D55BB19F1CB97A10000B2875 /* SlidableImageTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SlidableImageTests.swift; sourceTree = "<group>"; };
 		D55BB1A11CB97A10000B2875 /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
 		D565D0A41DCD6B2D0028788A /* SlidableImage.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = SlidableImage.swift; path = Sources/SlidableImage.swift; sourceTree = SOURCE_ROOT; };
+		D5C164D91E07260700606F9F /* ArrowsView.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = ArrowsView.swift; path = Sources/ArrowsView.swift; sourceTree = SOURCE_ROOT; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -82,6 +84,7 @@
 				D55BB18A1CB97A10000B2875 /* AppDelegate.swift */,
 				D55BB18C1CB97A10000B2875 /* ViewController.swift */,
 				D565D0A41DCD6B2D0028788A /* SlidableImage.swift */,
+				D5C164D91E07260700606F9F /* ArrowsView.swift */,
 				D55BB18E1CB97A10000B2875 /* Main.storyboard */,
 				D55BB1911CB97A10000B2875 /* Assets.xcassets */,
 				D55BB1931CB97A10000B2875 /* LaunchScreen.storyboard */,
@@ -203,6 +206,7 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				D5C164DA1E07260700606F9F /* ArrowsView.swift in Sources */,
 				D55BB18D1CB97A10000B2875 /* ViewController.swift in Sources */,
 				D565D0A51DCD6B2D0028788A /* SlidableImage.swift in Sources */,
 				D55BB18B1CB97A10000B2875 /* AppDelegate.swift in Sources */,

Sources/ArrowsView.swift

@@ -0,0 +1,68 @@
+//
+//  ArrowsView.swift
+//  SlidableImage
+//
+//  Created by Pawel Bednorz on 18.12.2016.
+//  Copyright © 2016 Quver. All rights reserved.
+//
+
+import UIKit
+
+class ArrowsView: UIView {
+
+  override init(frame: CGRect) {
+    super.init(frame: frame)
+    backgroundColor = .clear
+  }
+
+  required init?(coder aDecoder: NSCoder) {
+    super.init(coder: aDecoder)
+    backgroundColor = .clear
+  }
+
+  override func draw(_ rect: CGRect) {
+    drawCircle(rect)
+    drawArrows(rect)
+  }
+
+  private func drawCircle(_ rect: CGRect) {
+    let circle = UIBezierPath(ovalIn: rect)
+    let circleLayer = CAShapeLayer()
+    circleLayer.path = circle.cgPath
+    circleLayer.fillColor = UIColor.lightGray.cgColor
+    circleLayer.shadowColor = UIColor.darkGray.cgColor
+    circleLayer.shadowOpacity = 1
+    circleLayer.shadowOffset = CGSize.zero
+    circleLayer.shadowRadius = 10
+    layer.addSublayer(circleLayer)
+  }
+
+  private func drawArrows(_ rect: CGRect) {
+    let factor: CGFloat = rect.width * 0.05
+
+    let startPointLeft = CGPoint(x: (rect.minX + 2 * factor), y: rect.midY)
+    let arrowLeft = UIBezierPath()
+    arrowLeft.move(to: startPointLeft)
+    arrowLeft.addLine(to: CGPoint(x: (rect.midX - factor), y: rect.minY + 2 * factor))
+    arrowLeft.addLine(to: CGPoint(x: (rect.midX - factor), y: rect.maxY - 2 * factor))
+    arrowLeft.addLine(to: startPointLeft)
+
+    let arrowLeftLayer = CAShapeLayer()
+    arrowLeftLayer.path = arrowLeft.cgPath
+    arrowLeftLayer.fillColor = UIColor.white.cgColor
+    layer.addSublayer(arrowLeftLayer)
+
+    let startPointRight = CGPoint(x: (rect.maxX - 2 * factor), y: rect.midY)
+    let arrowRight = UIBezierPath()
+    arrowRight.move(to: startPointRight)
+    arrowRight.addLine(to: CGPoint(x: (rect.midX + factor), y: rect.minY + 2 * factor))
+    arrowRight.addLine(to: CGPoint(x: (rect.midX + factor), y: rect.maxY - 2 * factor))
+    arrowRight.addLine(to: startPointRight)
+
+    let arrowRightLayer = CAShapeLayer()
+    arrowRightLayer.path = arrowRight.cgPath
+    arrowRightLayer.fillColor = UIColor.white.cgColor
+    layer.addSublayer(arrowRightLayer)
+  }
+
+}

Sources/SlidableImage.swift

@@ -181,6 +181,11 @@ open class SlidableImage: UIView {
   private class func setupSliderCircle(sliderImage: UIImage? = nil) -> UIView {
     // Workaround - without this view, gesture recognizer doesn't work
     let circle = UIView(frame: CGRect(x: 0, y: 0, width: 50, height: 50))
+
+    guard let sliderImage = sliderImage else {
+      return ArrowsView(frame: frame)
+    }
+
     circle.layer.cornerRadius = circle.bounds.width / 2
 
     let imageView = UIImageView(image: sliderImage)