fix #29 add indication for current day

- change DayCell struct to class
- child class TodayCell from DayCell

Example/Source/ViewController.swift

@@ -100,7 +100,22 @@ class ViewController: UIViewController {
 
     @objc
     private func chooseRange() {
-        let fastisController = FastisController(mode: .range)
+        let config = FastisConfig.withCurrentDate
+        // date label
+        config.todayCell.dateLabelColor = .red
+        config.todayCell.selectedLabelColor = .orange
+        config.todayCell.onRangeLabelColor = .green
+        config.todayCell.dateLabelUnavailableColor = .cyan
+
+        // circle view
+        config.todayCell.circleSize = 6
+        config.todayCell.circleVerticalInset = 2
+        config.todayCell.circleViewColor = .red
+        config.todayCell.circleViewSelectedColor = .orange
+        config.todayCell.circleViewOnRangeColor = .green
+        config.todayCell.circleViewUnavailableColor = .cyan
+
+        let fastisController = FastisController(mode: .range, config: config)
         fastisController.title = "Choose range"
         fastisController.initialValue = self.currentValue as? FastisRange
         fastisController.minimumDate = Calendar.current.date(byAdding: .month, value: -2, to: Date())

README.md

@@ -202,6 +202,7 @@ Fastis can be customised global or local. `FastisConfig` have some sections:
 - `controller` - base view controller (`cancelButtonTitle`, `doneButtonTitle`, etc.)
 - `monthHeader` - month titles
 - `dayCell` - day cells (selection parameters, font, etc.)
+- `todayCell` - today cell (selection parameters, font, etc.)
 - `weekView` - top header view with weekday names
 - `currentValueView` - current value view appearance (clear button, date format, etc.)
 - `shortcutContainerView` - bottom view with shortcuts
@@ -220,6 +221,24 @@ var customConfig = FastisConfig.default
 customConfig.controller.dayCell.dateLabelColor = .blue
 let fastisController = FastisController(mode: .range, config: customConfig)
 ```
+To customise a today cell:
+
+```swift
+let config = FastisConfig.withCurrentDate
+// date label
+config.todayCell.dateLabelColor = .red
+config.todayCell.selectedLabelColor = .orange
+config.todayCell.onRangeLabelColor = .green
+config.todayCell.dateLabelUnavailableColor = .cyan
+
+// circle view
+config.todayCell.circleSize = 4
+config.todayCell.circleVerticalInset = 5
+config.todayCell.circleViewColor = .red
+config.todayCell.circleViewSelectedColor = .orange
+config.todayCell.circleViewOnRangeColor = .green
+config.todayCell.circleViewUnavailableColor = .cyan
+```
 
 ## Credits
 

Sources/Models/Config.swift

@@ -27,10 +27,33 @@ public struct FastisConfig {
      config.monthHeader.labelColor = .red
      let controller = FastisController(mode: .single, config: config)
      ```
+     Default configuration set showCurrentDate to false. In this case current day will not be indicate
+     WithCurrentDate configuration set showCurrentDateto true. In this case current day will be indicate
+
+     You can customized indication current day:
+     ```swift
+     let config = FastisConfig.withCurrentDate
+     // date label
+     config.todayCell.dateLabelColor = .red
+     config.todayCell.selectedLabelColor = .orange
+     config.todayCell.onRangeLabelColor = .green
+     config.todayCell.dateLabelUnavailableColor = .cyan
+
+     // circle view
+     config.todayCell.circleSize = 4
+     config.todayCell.circleVerticalInset = 5
+     config.todayCell.circleViewColor = .red
+     config.todayCell.circleViewSelectedColor = .orange
+     config.todayCell.circleViewOnRangeColor = .green
+     config.todayCell.circleViewUnavailableColor = .cyan
+     ```
      */
-    public static var `default` = FastisConfig()
+    public static var `default` = FastisConfig(showCurrentDate: false)
+    public static var `withCurrentDate` = FastisConfig(showCurrentDate: true)
 
-    private init() { }
+    private init(showCurrentDate: Bool) {
+        self.showCurrentDate = showCurrentDate
+    }
 
     /**
      Base calendar used to build a view
@@ -48,6 +71,9 @@ public struct FastisConfig {
     /// Day cells (selection parameters, font, etc.)
     public var dayCell = FastisConfig.DayCell()
 
+    /// Today cell (selection parameters, font, etc.)
+    public var todayCell = FastisConfig.TodayCell()
+
     /// Top header view with week day names
     public var weekView = FastisConfig.WeekView()
 
@@ -60,4 +86,6 @@ public struct FastisConfig {
     /// Shortcut item in the bottom view
     public var shortcutItemView = FastisConfig.ShortcutItemView()
 
+    /// Flag to show or hide the current date indication
+    public let showCurrentDate: Bool
 }

Sources/Views/Controller.swift

@@ -413,6 +413,12 @@ open class FastisController<Value: FastisValue>: UIViewController, JTACMonthView
                 newConfig.dateLabelText = self.dayFormatter.string(from: date)
             }
 
+            if self.config.showCurrentDate,
+               Calendar.current.isDateInToday(date)
+            {
+                newConfig.isToday = true
+            }
+
             self.viewConfigs[indexPath] = newConfig
             cell.applyConfig(self.config)
             cell.configure(for: newConfig)

Sources/Views/DayCell.swift

@@ -20,6 +20,13 @@ final class DayCell: JTACDayCell {
         return label
     }()
 
+    lazy var circleView: UIView = {
+        let view = UIView()
+        view.backgroundColor = .red
+        view.translatesAutoresizingMaskIntoConstraints = false
+        return view
+    }()
+
     lazy var selectionBackgroundView: UIView = {
         let view = UIView()
         view.isHidden = true
@@ -46,6 +53,7 @@ final class DayCell: JTACDayCell {
     // MARK: - Variables
 
     private var config: FastisConfig.DayCell = FastisConfig.default.dayCell
+    private var todayConfig: FastisConfig.TodayCell = FastisConfig.default.todayCell
     private var rangeViewTopAnchorConstraints: [NSLayoutConstraint] = []
     private var rangeViewBottomAnchorConstraints: [NSLayoutConstraint] = []
 
@@ -63,13 +71,22 @@ final class DayCell: JTACDayCell {
         fatalError("init(coder:) has not been implemented")
     }
 
+    override func prepareForReuse() {
+        super.prepareForReuse()
+        self.circleView.removeFromSuperview()
+    }
+
     // MARK: - Configurations
 
     public func applyConfig(_ config: FastisConfig) {
         self.backgroundColor = config.controller.backgroundColor
 
+        let todayConfig = config.todayCell
         let config = config.dayCell
+
+        self.todayConfig = todayConfig
         self.config = config
+
         self.rightRangeView.backgroundColor = config.onRangeBackgroundColor
         self.leftRangeView.backgroundColor = config.onRangeBackgroundColor
         self.rightRangeView.layer.cornerRadius = config.rangeViewCornerRadius
@@ -95,10 +112,8 @@ final class DayCell: JTACDayCell {
     public func configureConstraints() {
         let inset = self.config.rangedBackgroundViewVerticalInset
         NSLayoutConstraint.activate([
-            self.dateLabel.leftAnchor.constraint(equalTo: self.contentView.leftAnchor),
-            self.dateLabel.rightAnchor.constraint(equalTo: self.contentView.rightAnchor),
-            self.dateLabel.topAnchor.constraint(equalTo: self.contentView.topAnchor),
-            self.dateLabel.bottomAnchor.constraint(equalTo: self.contentView.bottomAnchor)
+            self.dateLabel.centerXAnchor.constraint(equalTo: self.contentView.centerXAnchor),
+            self.dateLabel.centerYAnchor.constraint(equalTo: self.contentView.centerYAnchor)
         ])
         NSLayoutConstraint.activate([
             self.leftRangeView.leftAnchor.constraint(equalTo: self.contentView.leftAnchor),
@@ -267,6 +282,7 @@ final class DayCell: JTACDayCell {
         var isSelectedViewHidden = true
         var isDateEnabled = true
         var rangeView = RangeViewConfig()
+        var isToday = false
     }
 
     internal func configure(for config: ViewConfig) {
@@ -278,14 +294,11 @@ final class DayCell: JTACDayCell {
         if let dateLabelText = config.dateLabelText {
             self.dateLabel.isHidden = false
             self.dateLabel.text = dateLabelText
-            if !config.isDateEnabled {
-                self.dateLabel.textColor = self.config.dateLabelUnavailableColor
-            } else if !config.isSelectedViewHidden {
-                self.dateLabel.textColor = self.config.selectedLabelColor
-            } else if !config.rangeView.isHidden {
-                self.dateLabel.textColor = self.config.onRangeLabelColor
+
+            if config.isToday {
+                self.configAsTodayCell(viewConfig: config)
             } else {
-                self.dateLabel.textColor = self.config.dateLabelColor
+                self.configAsDayCell(viewConfig: config)
             }
 
         } else {
@@ -316,6 +329,46 @@ final class DayCell: JTACDayCell {
 
     }
 
+    private func configAsDayCell(viewConfig: ViewConfig) {
+        if !viewConfig.isDateEnabled {
+            self.dateLabel.textColor = self.config.dateLabelUnavailableColor
+        } else if !viewConfig.isSelectedViewHidden {
+            self.dateLabel.textColor = self.config.selectedLabelColor
+        } else if !viewConfig.rangeView.isHidden {
+            self.dateLabel.textColor = self.config.onRangeLabelColor
+        } else {
+            self.dateLabel.textColor = self.config.dateLabelColor
+        }
+    }
+
+    private func configAsTodayCell(viewConfig: ViewConfig) {
+        self.dateLabel.font = self.todayConfig.dateLabelFont
+
+        if !viewConfig.isDateEnabled {
+            self.dateLabel.textColor = self.todayConfig.dateLabelUnavailableColor
+            self.circleView.backgroundColor = self.todayConfig.circleViewUnavailableColor
+        } else if !viewConfig.isSelectedViewHidden {
+            self.dateLabel.textColor = self.todayConfig.selectedLabelColor
+            self.circleView.backgroundColor = self.todayConfig.circleViewSelectedColor
+        } else if !viewConfig.rangeView.isHidden {
+            self.dateLabel.textColor = self.todayConfig.onRangeLabelColor
+            self.circleView.backgroundColor = self.todayConfig.onRangeLabelColor
+        } else {
+            self.dateLabel.textColor = self.todayConfig.dateLabelColor
+            self.circleView.backgroundColor = self.todayConfig.circleViewColor
+        }
+
+        self.circleView.layer.cornerRadius = self.todayConfig.circleSize * 0.5
+        self.circleView.removeFromSuperview()
+        self.contentView.addSubview(self.circleView)
+        NSLayoutConstraint.activate([
+            self.circleView.centerXAnchor.constraint(equalTo: self.dateLabel.centerXAnchor),
+            self.circleView.topAnchor.constraint(equalTo: self.dateLabel.bottomAnchor, constant: self.todayConfig.circleVerticalInset),
+            self.circleView.widthAnchor.constraint(equalToConstant: self.todayConfig.circleSize),
+            self.circleView.heightAnchor.constraint(equalToConstant: self.todayConfig.circleSize)
+        ])
+    }
+
 }
 
 public extension FastisConfig {
@@ -325,7 +378,7 @@ public extension FastisConfig {
 
      Configurable in FastisConfig.``FastisConfig/dayCell-swift.property`` property
      */
-    struct DayCell {
+    class DayCell {
 
         /**
          Font of date label in cell
@@ -400,4 +453,49 @@ public extension FastisConfig {
         public var customSelectionViewCornerRadius: CGFloat?
     }
 
+    class TodayCell: DayCell {
+
+        /**
+         Size circle view in cell
+
+         Default value — `4pt`
+         */
+        public var circleSize: CGFloat = 4
+
+        /**
+         Color of circle view in cell
+
+         Default value — `.label`
+         */
+        public var circleViewColor: UIColor = .label
+
+        /**
+         Color of circle view in cell when date is unavailable for select
+
+         Default value — `.tertiaryLabel`
+         */
+        public var circleViewUnavailableColor: UIColor = .tertiaryLabel
+
+        /**
+         Color of circle view in cell when date is selected
+
+         Default value — `.white`
+         */
+        public var circleViewSelectedColor: UIColor = .white
+
+        /**
+         Color of circle view in cell when date is a part of selected range
+
+         Default value — `.label`
+         */
+        public var circleViewOnRangeColor: UIColor = .label
+
+        /**
+         Inset circle view from date label
+
+         Default value — `5pt`
+         */
+        public var circleVerticalInset: CGFloat = 3
+    }
+
 }