Style.md

Advanded Style Guide

Since RESegmentedControl can be stylized only in code, there are couple of options you can consider to avoid code dublication. The easiest option is to write an extension for BootstapPreset and configure it for your needs.

extension BootstapPreset {
    mutating func configure() {
        self.segmentItemBorderWidth = 1
        self.segmentItemBorderColor = .gray

        self.textFont = UIFont.systemFont(ofSize: 11, weight: .bold)
        self.selectedTextFont = UIFont.systemFont(ofSize: 11, weight: .bold)
    }
}

//ViewController
var preset = BootstapPreset(backgroundColor: .white, selectedBackgroundColor: .red)
preset.configure()

segmentedControl.configure(segmentItems: items, preset: preset)

Creating a Preset

A better option is to create a preset, while it requires more time and code but is more reusable.

To create a preset, create a struct and inherit from the SegmentedControlPresettable protocol.

struct DarkPreset: SegmentedControlPresettable

SegmentedControlPresettable protocol contains three main styles that you need to implement in your preset:

struct DarkPreset: SegmentedControlPresettable {

    /// Segmented control style
    public var segmentStyle: SegmentStylable

    /// Segment item style
    public var segmentItemStyle: SegmentItemStylable

    /// Selected segment item style
    public var segmentSelectedItemStyle: SegmentSelectedItemStylable

}

Initiate and configure styles for your needs. It’s possible to use existing styles structs that already inherit from Stylable protocols.

import UIKit

public struct DarkPreset: SegmentedControlPresettable {

    /// Segmented control style
    public var segmentStyle: SegmentStylable

    /// Segment item style
    public var segmentItemStyle: SegmentItemStylable

    /// Selected segment item style
    public var segmentSelectedItemStyle: SegmentSelectedItemStylable

    public init(backgroundColor: UIColor = .white,
                selectedBackgroundColor: UIColor = .yellow) {
        segmentStyle = SegmentStyle()
        segmentItemStyle = SegmentItemStyle(backgroundColor: backgroundColor)
        segmentSelectedItemStyle = SegmentSelectedItemStyle(backgoundColor: selectedBackgroundColor)
    }

}

For more information, see BootstapPreset and MaterialPreset in the demo project.

Then use your preset in SegmentedControl:

//ViewController
let preset = DarkPreset(backgroundColor: .white, selectedBackgroundColor: .red)
segmentedControl.configure(segmentItems: items, preset: preset)

To learn more see a full API Reference, and check out the demo project included in the repository.