Fixes #26

TGPControls/TGPDiscreteSlider.swift

@@ -41,7 +41,13 @@ public class TGPDiscreteSlider:TGPSlider_INTERFACE_BUILDER {
         }
     }
 
-    @IBInspectable public var tickTintColor:UIColor? = nil {
+    @IBInspectable public var minimumTickTintColor:UIColor? = nil {
+        didSet {
+            layoutTrack()
+        }
+    }
+
+    @IBInspectable public var maximumTickTintColor:UIColor? = nil {
         didSet {
             layoutTrack()
         }
@@ -78,7 +84,7 @@ public class TGPDiscreteSlider:TGPSlider_INTERFACE_BUILDER {
         }
     }
 
-    @IBInspectable public var maximumTrackTintColor:UIColor = UIColor(white: 0.71, alpha: 1) {
+    @IBInspectable public var maximumTrackTintColor = UIColor(white: 0.71, alpha: 1) {
         didSet {
             layoutTrack()
         }
@@ -223,12 +229,19 @@ public class TGPDiscreteSlider:TGPSlider_INTERFACE_BUILDER {
     var ticksAbscissae:[CGPoint] = []
     var thumbAbscissa:CGFloat = 0
     var thumbLayer = CALayer()
+
+    var trackLayer = CALayer()
     var leftTrackLayer = CALayer()
     var rightTrackLayer = CALayer()
-    var trackLayer = CALayer()
     var leadingTrackLayer: CALayer!
     var trailingTrackLayer: CALayer!
+
     var ticksLayer = CALayer()
+    var leftTicksLayer = CALayer()
+    var rightTicksLayer = CALayer()
+    var leadingTicksLayer: CALayer!
+    var trailingTicksLayer: CALayer!
+
     var trackRectangle = CGRect.zero
     var touchedInside = false
     var localeCharacterDirection = CFLocaleLanguageDirection.leftToRight
@@ -275,21 +288,27 @@ public class TGPDiscreteSlider:TGPSlider_INTERFACE_BUILDER {
         trailingTrackLayer = (.rightToLeft == localeCharacterDirection)
             ? leftTrackLayer
             : rightTrackLayer
+        leadingTicksLayer = (.rightToLeft == localeCharacterDirection)
+            ? rightTicksLayer
+            : leftTicksLayer
+        trailingTicksLayer = (.rightToLeft == localeCharacterDirection)
+            ? leftTicksLayer
+            : rightTicksLayer
 
-        // Track is a clear clipping layer, and left + right sublayers, which brings in free animation
+        // Track and ticks are in a clear clipping layer, and left + right sublayers,
+        // which brings in free animation
         trackLayer.masksToBounds = true
         trackLayer.backgroundColor = UIColor.clear.cgColor
         layer.addSublayer(trackLayer)
         trackLayer.addSublayer(leftTrackLayer)
         trackLayer.addSublayer(rightTrackLayer)
 
-        if let backgroundColor = tintColor {
-            leadingTrackLayer.backgroundColor = backgroundColor.cgColor
-        }
-        rightTrackLayer.backgroundColor = maximumTrackTintColor.cgColor
-
         // Ticks in between track and thumb
+        ticksLayer.masksToBounds = true
+        ticksLayer.backgroundColor = UIColor.clear.cgColor
         layer.addSublayer(ticksLayer)
+        ticksLayer.addSublayer(rightTicksLayer) // reverse order, left covers right
+        ticksLayer.addSublayer(leftTicksLayer)
 
         // The thumb is its own CALayer, which brings in free animation
         layer.addSublayer(thumbLayer)
@@ -300,11 +319,6 @@ public class TGPDiscreteSlider:TGPSlider_INTERFACE_BUILDER {
 
     func drawTicks() {
         ticksLayer.frame = bounds
-
-        if let tickColor = tickTintColor ?? tintColor {
-            ticksLayer.backgroundColor = tickColor.cgColor
-        }
-
         let path = UIBezierPath()
 
         switch tickComponentStyle {
@@ -363,10 +377,35 @@ public class TGPDiscreteSlider:TGPSlider_INTERFACE_BUILDER {
             break
         }
 
-        let maskLayer = CAShapeLayer()
-        maskLayer.frame = trackLayer.bounds
-        maskLayer.path = path.cgPath
-        ticksLayer.mask = maskLayer
+        leftTicksLayer.frame = {
+            var frame = ticksLayer.bounds
+            let tickWidth = (.rightToLeft == localeCharacterDirection)
+                ? -tickSize.width/2
+                : tickSize.width/2
+            frame.size.width = tickWidth + thumbAbscissa
+
+            return frame
+        }()
+
+        leftTicksLayer.mask = {
+            let maskLayer = CAShapeLayer()
+            maskLayer.frame = ticksLayer.bounds
+            maskLayer.path = path.cgPath
+            return maskLayer
+        }()
+
+        rightTicksLayer.frame = ticksLayer.bounds
+
+        rightTicksLayer.mask = {
+            let maskLayer = CAShapeLayer()
+            maskLayer.path = path.cgPath
+            return maskLayer
+        }()
+
+        if let backgroundColor = minimumTickTintColor ?? (minimumTrackTintColor ?? tintColor) {
+            leadingTicksLayer.backgroundColor = backgroundColor.cgColor
+        }
+        trailingTicksLayer.backgroundColor = maximumTickTintColor?.cgColor ?? maximumTrackTintColor.cgColor
     }
 
     func drawTrack() {

TGPControlsDemo/Podfile

@@ -3,8 +3,23 @@ platform :ios, '8.0'
 use_frameworks!
 
 target 'TGPControlsDemo-Pods' do
-    pod 'TGPControls', :path => '../../TGPControls'
-    #pod 'TGPControls'
+    #pod 'TGPControls', :path => '../../TGPControls'
+    pod 'TGPControls'
 end
 
+# Failed to render and update auto layout status for UIViewController : dlopen(Cosmos.framework, 1): no suitable image found
+# https://github.com/CocoaPods/CocoaPods/issues/7606#issuecomment-381279098
+# https://stackoverflow.com/a/49936237/218152
+post_install do |installer|
+    installer.pods_project.targets.each do |target|
+        target.build_configurations.each do |config|
+            config.build_settings.delete('CODE_SIGNING_ALLOWED')
+            config.build_settings.delete('CODE_SIGNING_REQUIRED')
+        end
+    end
+    installer.pods_project.build_configurations.each do |config|
+        config.build_settings.delete('CODE_SIGNING_ALLOWED')
+        config.build_settings.delete('CODE_SIGNING_REQUIRED')
+    end
+end
 

TGPControlsDemo/TGPControlsDemo.xcodeproj/project.pbxproj

@@ -164,7 +164,6 @@
 				DC56BDC01E46DEB900AAD0D9 /* Frameworks */,
 				DC56BDC11E46DEB900AAD0D9 /* Resources */,
 				A772C50843047EE677ADAF15 /* [CP] Embed Pods Frameworks */,
-				3FF2E09CAFA7D92A488FACF7 /* [CP] Copy Pods Resources */,
 			);
 			buildRules = (
 			);
@@ -258,21 +257,6 @@
 			shellScript = "diff \"${PODS_PODFILE_DIR_PATH}/Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [ $? != 0 ] ; then\n    # print error to STDERR\n    echo \"error: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\" >&2\n    exit 1\nfi\n# This output is used by Xcode 'outputs' to avoid re-running this script phase.\necho \"SUCCESS\" > \"${SCRIPT_OUTPUT_FILE_0}\"\n";
 			showEnvVarsInLog = 0;
 		};
-		3FF2E09CAFA7D92A488FACF7 /* [CP] Copy Pods Resources */ = {
-			isa = PBXShellScriptBuildPhase;
-			buildActionMask = 2147483647;
-			files = (
-			);
-			inputPaths = (
-			);
-			name = "[CP] Copy Pods Resources";
-			outputPaths = (
-			);
-			runOnlyForDeploymentPostprocessing = 0;
-			shellPath = /bin/sh;
-			shellScript = "\"${SRCROOT}/Pods/Target Support Files/Pods-TGPControlsDemo-Pods/Pods-TGPControlsDemo-Pods-resources.sh\"\n";
-			showEnvVarsInLog = 0;
-		};
 		A772C50843047EE677ADAF15 /* [CP] Embed Pods Frameworks */ = {
 			isa = PBXShellScriptBuildPhase;
 			buildActionMask = 2147483647;

TGPControlsDemo/TGPControlsDemo/Base.lproj/Main.storyboard

@@ -379,6 +379,12 @@
                                                     <userDefinedRuntimeAttribute type="size" keyPath="thumbShadowOffset">
                                                         <size key="value" width="0.0" height="0.0"/>
                                                     </userDefinedRuntimeAttribute>
+                                                    <userDefinedRuntimeAttribute type="color" keyPath="minimumTickTintColor">
+                                                        <color key="value" red="0.85098039219999999" green="0.0" blue="0.1058823529" alpha="1" colorSpace="calibratedRGB"/>
+                                                    </userDefinedRuntimeAttribute>
+                                                    <userDefinedRuntimeAttribute type="color" keyPath="maximumTickTintColor">
+                                                        <color key="value" red="0.85098039219999999" green="0.49424107142857143" blue="0.1058823529" alpha="1" colorSpace="calibratedRGB"/>
+                                                    </userDefinedRuntimeAttribute>
                                                 </userDefinedRuntimeAttributes>
                                             </view>
                                             <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="UIControlActions" textAlignment="right" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="gID-5d-KDe">