Merge pull request #2 from TouchInstinct/block_minimum_reached

Added block call when minimum is reached

.swift-version

@@ -1 +1 @@
-4.0
+4.2

GMStepper.podspec

@@ -1,14 +1,16 @@
 Pod::Spec.new do |s|
   s.name             = "GMStepper"
-  s.version          = "2.1"
+  s.version          = "2.2.1"
   s.summary          = "A stepper with a sliding label in the middle."
   s.homepage         = "https://github.com/gmertk/GMStepper"
   s.screenshots      = "https://raw.githubusercontent.com/gmertk/GMStepper/master/Screenshots/screenshot_1.gif"
   s.license          = 'MIT'
-  s.author           = { "Gunay Mert Karadogan" => "mertkaradogan@gmail.com" }
+  s.authors          = { "Gunay Mert Karadogan" => "mertkaradogan@gmail.com",
+                         "Brent Whitman" => "brent@pathym.com" }
   s.source           = { :git => "https://github.com/gmertk/GMStepper.git", :tag => s.version.to_s }
   s.social_media_url = 'https://twitter.com/gunaymertk'
   s.platform     = :ios, '8.0'
   s.requires_arc = true
   s.source_files = 'GMStepper/*.swift'
+  s.swift_version = '4.2'
 end

GMStepper/GMStepper.swift

@@ -15,26 +15,27 @@ import UIKit
         didSet {
             value = min(maximumValue, max(minimumValue, value))
 
-            let isInteger = floor(value) == value
-            
-            //
-            // If we have items, we will display them as steps
-            //
-            
-            if isInteger && stepValue == 1.0 && items.count > 0 {
-                label.text = items[Int(value)]
-            }
-            else if showIntegerIfDoubleIsInteger && isInteger {
-                label.text = String(stringInterpolationSegment: Int(value))
-            } else {
-                label.text = String(stringInterpolationSegment: value)
-            }
+            handleIsLimitReached()
+
+            label.text = formattedValue
 
             if oldValue != value {
                 sendActions(for: .valueChanged)
             }
         }
     }
+    
+    private var formattedValue: String? {
+        let isInteger = Decimal(value).exponent >= 0
+        
+        // If we have items, we will display them as steps
+        if isInteger && stepValue == 1.0 && items.count > 0 {
+            return items[Int(value)]
+        }
+        else {
+            return formatter.string(from: NSNumber(value: value))
+        }
+    }
 
     /// Minimum value. Must be less than maximumValue. Defaults to 0.
     @objc @IBInspectable public var minimumValue: Double = 0 {
@@ -51,37 +52,53 @@ import UIKit
     }
 
     /// Step/Increment value as in UIStepper. Defaults to 1.
-    @objc @IBInspectable public var stepValue: Double = 1
+    @objc @IBInspectable public var stepValue: Double = 1 {
+        didSet {
+            setupNumberFormatter()
+        }
+    }
 
     /// The same as UIStepper's autorepeat. If true, holding on the buttons or keeping the pan gesture alters the value repeatedly. Defaults to true.
     @objc @IBInspectable public var autorepeat: Bool = true
 
     /// If the value is integer, it is shown without floating point.
-    @objc @IBInspectable public var showIntegerIfDoubleIsInteger: Bool = true
-
-    /// Text on the left button. Be sure that it fits in the button. Defaults to "−".
-    @objc @IBInspectable public var leftButtonText: String = "−" {
+    @objc @IBInspectable public var showIntegerIfDoubleIsInteger: Bool = true {
         didSet {
-            leftButton.setTitle(leftButtonText, for: .normal)
+            setupNumberFormatter()
         }
     }
 
-    /// Text on the right button. Be sure that it fits in the button. Defaults to "+".
-    @objc @IBInspectable public var rightButtonText: String = "+" {
+    /// Image on the left button. Defaults to nil.
+    @objc @IBInspectable public var leftButtonImage: UIImage? = nil {
         didSet {
-            rightButton.setTitle(rightButtonText, for: .normal)
+            leftButton.setImage(leftButtonImage, for: .normal)
         }
     }
 
-    /// Text color of the buttons. Defaults to white.
-    @objc @IBInspectable public var buttonsTextColor: UIColor = UIColor.white {
+    /// Image on the right button. Defaults to nil.
+    @objc @IBInspectable public var rightButtonImage: UIImage? = nil {
         didSet {
-            for button in [leftButton, rightButton] {
-                button.setTitleColor(buttonsTextColor, for: .normal)
-            }
+            rightButton.setImage(rightButtonImage, for: .normal)
         }
     }
 
+    /// Left button content insets. Defaults to ".zero".
+    @objc @IBInspectable public var leftButtonContentInsets: UIEdgeInsets = .zero {
+        didSet {
+            leftButton.contentEdgeInsets = leftButtonContentInsets
+        }
+    }
+
+    /// Right button content insets. Defaults to ".zero".
+    @objc @IBInspectable public var rightButtonContentInsets: UIEdgeInsets = .zero {
+        didSet {
+            rightButton.contentEdgeInsets = rightButtonContentInsets
+        }
+    }
+
+    /// Left button limit opacity. Defaults to "0.4".
+    @objc @IBInspectable public var leftButtonLimitOpacity: CGFloat = 0.4
+
     /// Background color of the buttons. Defaults to dark blue.
     @objc @IBInspectable public var buttonsBackgroundColor: UIColor = UIColor(red:0.21, green:0.5, blue:0.74, alpha:1) {
         didSet {
@@ -92,15 +109,12 @@ import UIKit
         }
     }
 
-    /// Font of the buttons. Defaults to AvenirNext-Bold, 20.0 points in size.
-    @objc public var buttonsFont = UIFont(name: "AvenirNext-Bold", size: 20.0)! {
-        didSet {
-            for button in [leftButton, rightButton] {
-                button.titleLabel?.font = buttonsFont
-            }
-        }
-    }
-
+    /// Label tap closure
+    @objc public var didTouchLabel: ((Double) -> Void)?
+    
+    /// Block is called when the minimum is exceeded
+    @objc public var minimumExceeded: (() -> Void)?
+    
     /// Text color of the middle label. Defaults to white.
     @objc @IBInspectable public var labelTextColor: UIColor = UIColor.white {
         didSet {
@@ -164,6 +178,9 @@ import UIKit
     /// Color of the flashing animation on the buttons in case the value hit the limit.
     @objc @IBInspectable public var limitHitAnimationColor: UIColor = UIColor(red:0.26, green:0.6, blue:0.87, alpha:1)
 
+    /// Formatter for displaying the current value
+    let formatter = NumberFormatter()
+    
     /**
         Width of the sliding animation. When buttons clicked, the middle label does a slide animation towards to the clicked button. Defaults to 5.
     */
@@ -177,10 +194,8 @@ import UIKit
 
     lazy var leftButton: UIButton = {
         let button = UIButton()
-        button.setTitle(self.leftButtonText, for: .normal)
-        button.setTitleColor(self.buttonsTextColor, for: .normal)
+        button.setImage(self.leftButtonImage, for: .normal)
         button.backgroundColor = self.buttonsBackgroundColor
-        button.titleLabel?.font = self.buttonsFont
         button.addTarget(self, action: #selector(GMStepper.leftButtonTouchDown), for: .touchDown)
         button.addTarget(self, action: #selector(GMStepper.buttonTouchUp), for: .touchUpInside)
         button.addTarget(self, action: #selector(GMStepper.buttonTouchUp), for: .touchUpOutside)
@@ -190,10 +205,8 @@ import UIKit
 
     lazy var rightButton: UIButton = {
         let button = UIButton()
-        button.setTitle(self.rightButtonText, for: .normal)
-        button.setTitleColor(self.buttonsTextColor, for: .normal)
+        button.setImage(self.rightButtonImage, for: .normal)
         button.backgroundColor = self.buttonsBackgroundColor
-        button.titleLabel?.font = self.buttonsFont
         button.addTarget(self, action: #selector(GMStepper.rightButtonTouchDown), for: .touchDown)
         button.addTarget(self, action: #selector(GMStepper.buttonTouchUp), for: .touchUpInside)
         button.addTarget(self, action: #selector(GMStepper.buttonTouchUp), for: .touchUpOutside)
@@ -204,11 +217,7 @@ import UIKit
     lazy var label: UILabel = {
         let label = UILabel()
         label.textAlignment = .center
-        if self.showIntegerIfDoubleIsInteger && floor(self.value) == self.value {
-            label.text = String(stringInterpolationSegment: Int(self.value))
-        } else {
-            label.text = String(stringInterpolationSegment: self.value)
-        }
+        label.text = formattedValue
         label.textColor = self.labelTextColor
         label.backgroundColor = self.labelBackgroundColor
         label.font = self.labelFont
@@ -218,6 +227,8 @@ import UIKit
         let panRecognizer = UIPanGestureRecognizer(target: self, action: #selector(GMStepper.handlePan))
         panRecognizer.maximumNumberOfTouches = 1
         label.addGestureRecognizer(panRecognizer)
+        let tapRecognizer = UITapGestureRecognizer(target: self, action: #selector(GMStepper.handleLabelTap))
+        label.addGestureRecognizer(tapRecognizer)
         return label
     }()
 
@@ -247,24 +258,7 @@ import UIKit
     
     @objc public var items : [String] = [] {
         didSet {
-            let isInteger = floor(value) == value
-            
-            //
-            // If we have items, we will display them as steps
-            //
-            
-            if isInteger && stepValue == 1.0 && items.count > 0 {
-                
-                var value = Int(self.value)
-                
-                if value >= items.count {
-                    value = items.count - 1
-                    self.value = Double(value)
-                }
-                else {
-                    label.text = items[value]
-                }
-            }
+            label.text = formattedValue
         }
     }
 
@@ -301,17 +295,28 @@ import UIKit
         setup()
     }
 
-    func setup() {
+    fileprivate func setup() {
         addSubview(leftButton)
         addSubview(rightButton)
         addSubview(label)
 
+        handleIsLimitReached()
         backgroundColor = buttonsBackgroundColor
         layer.cornerRadius = cornerRadius
         clipsToBounds = true
         labelOriginalCenter = label.center
 
-        NotificationCenter.default.addObserver(self, selector: #selector(GMStepper.reset), name: NSNotification.Name.UIApplicationWillResignActive, object: nil)
+        setupNumberFormatter()
+        
+        NotificationCenter.default.addObserver(self, selector: #selector(GMStepper.reset), name: UIApplication.willResignActiveNotification, object: nil)
+    }
+    
+    func setupNumberFormatter() {
+        let decValue = Decimal(stepValue)
+        let digits = decValue.significantFractionalDecimalDigits
+        formatter.minimumIntegerDigits = 1
+        formatter.minimumFractionDigits = showIntegerIfDoubleIsInteger ? 0 : digits
+        formatter.maximumFractionDigits = digits
     }
 
     public override func layoutSubviews() {
@@ -332,8 +337,9 @@ import UIKit
             value += stepValue
         } else if stepperState == .ShouldDecrease {
             value -= stepValue
-        }   
+        }
     }
+    
 
     deinit {
         resetTimer()
@@ -406,6 +412,10 @@ extension GMStepper {
         }
     }
 
+    @objc func handleLabelTap() {
+        didTouchLabel?(value)
+    }
+
     @objc func reset() {
         panState = .Stable
         stepperState = .Stable
@@ -432,11 +442,11 @@ extension GMStepper {
 
         if value == minimumValue {
             animateLimitHitIfNeeded()
+            minimumExceeded?()
         } else {
             stepperState = .ShouldDecrease
             animateSlideLeft()
         }
-
     }
 
     @objc func rightButtonTouchDown(button: UIButton) {
@@ -516,6 +526,19 @@ extension GMStepper {
             timerFireCount = 0
         }
     }
-
-
+}
+
+private extension GMStepper {
+
+    func handleIsLimitReached() {
+        let isLimitReached = value == minimumValue
+        leftButton.alpha = isLimitReached ? leftButtonLimitOpacity : 1
+    }
+}
+
+extension Decimal {
+    
+    var significantFractionalDecimalDigits: Int {
+        return max(-exponent, 0)
+    }
 }

GMStepperExample/GMStepperExample.xcodeproj/project.pbxproj

@@ -168,14 +168,14 @@
 				TargetAttributes = {
 					3116C0D71DA4DD360015AC69 = {
 						CreatedOnToolsVersion = 8.0;
-						LastSwiftMigration = 0900;
+						LastSwiftMigration = 1000;
 						ProvisioningStyle = Automatic;
 						TestTargetID = 319C19311B4843EB005EFEE5;
 					};
 					319C19311B4843EB005EFEE5 = {
 						CreatedOnToolsVersion = 6.4;
 						DevelopmentTeam = 289M6XEDV4;
-						LastSwiftMigration = 0900;
+						LastSwiftMigration = 1000;
 					};
 				};
 			};
@@ -282,8 +282,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.gmertk.GMStepperExampleTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = DEBUG;
-				SWIFT_SWIFT3_OBJC_INFERENCE = On;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/GMStepperExample.app/GMStepperExample";
 			};
 			name = Debug;
@@ -300,8 +299,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.gmertk.GMStepperExampleTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_SWIFT3_OBJC_INFERENCE = On;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/GMStepperExample.app/GMStepperExample";
 			};
 			name = Release;
@@ -411,11 +409,11 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				DEVELOPMENT_TEAM = 289M6XEDV4;
 				INFOPLIST_FILE = GMStepperExample/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "com.gunaymert.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = Debug;
 		};
@@ -425,11 +423,11 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				DEVELOPMENT_TEAM = 289M6XEDV4;
 				INFOPLIST_FILE = GMStepperExample/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "com.gunaymert.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = Release;
 		};

GMStepperExample/GMStepperExample.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

GMStepperExample/GMStepperExample/AppDelegate.swift

@@ -14,7 +14,7 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
     var window: UIWindow?
 
 
-    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
+    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
         // Override point for customization after application launch.
         return true
     }

GMStepperExample/GMStepperExample/Base.lproj/Main.storyboard

@@ -56,7 +56,7 @@
                                         <color key="value" red="0.90823972230000005" green="0.92638683320000004" blue="0.93171715740000005" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
                                     </userDefinedRuntimeAttribute>
                                     <userDefinedRuntimeAttribute type="number" keyPath="stepValue">
-                                        <real key="value" value="0.5"/>
+                                        <real key="value" value="0.1"/>
                                     </userDefinedRuntimeAttribute>
                                 </userDefinedRuntimeAttributes>
                             </view>