EFColorPicker: A Swift repository from menglifei

EFColorPicker is a lightweight color picker in Swift, inspired by MSColorPicker.

中文介绍

Overview

Color picker component for iOS. It allows the user to select a color with color components. Key features:

iPhone & iPad support
Adaptive User Interface
Supports RGB and HSB color models
Well-documented
Compatible with iOS 8.0 (iPhone & iPad) and higher

Preview

iPhone		iPad

Example

To run the example project, clone the repo, and run pod install from the Example directory first.

Then build and run EFColorPicker.xcworkspace in Xcode, the demo shows how to use and integrate the EFColorPicker into your project.

Requirements

Version	Needs
<5.0	Xcode 10.0+ Swift 4.2+ iOS 8.0+
5.x	Xcode 10.2+ Swift 5.0+ iOS 8.0+

Installation

CocoaPods

EFColorPicker is available through CocoaPods. To install it, simply add the following line to your Podfile:

pod 'EFColorPicker'

Carthage

You can use Carthage to install EFColorPicker by adding that to your Cartfile:

github "EFPrefix/EFColorPicker"

Swift Package Manager

The Swift Package Manager is a tool for automating the distribution of Swift code and is integrated into the Swift compiler.

Once you have your Swift package set up, adding EFColorPicker as a dependency is as easy as adding it to the dependencies value of your Package.swift.

dependencies: [
    .package(url: "https://github.com/EFPrefix/EFColorPicker.git", .upToNextMinor(from: "5.2.2"))
]

Use

First, include EFColorPicker in your project:

import EFColorPicker

Next, we can call EFColorPicker with pure code:

let colorSelectionController = EFColorSelectionViewController()
let navCtrl = UINavigationController(rootViewController: colorSelectionController)
navCtrl.navigationBar.backgroundColor = UIColor.white
navCtrl.navigationBar.isTranslucent = false
navCtrl.modalPresentationStyle = UIModalPresentationStyle.popover
navCtrl.popoverPresentationController?.delegate = self
navCtrl.popoverPresentationController?.sourceView = sender
navCtrl.popoverPresentationController?.sourceRect = sender.bounds
navCtrl.preferredContentSize = colorSelectionController.view.systemLayoutSizeFitting(
    UILayoutFittingCompressedSize
)

colorSelectionController.delegate = self
colorSelectionController.color = self.view.backgroundColor ?? UIColor.white
colorSelectionController.setMode(mode: EFColorSelectionMode.all)

if UIUserInterfaceSizeClass.compact == self.traitCollection.horizontalSizeClass {
    let doneBtn: UIBarButtonItem = UIBarButtonItem(
        title: NSLocalizedString("Done", comment: ""),
        style: UIBarButtonItemStyle.done,
        target: self,
        action: #selector(ef_dismissViewController(sender:))
    )
    colorSelectionController.navigationItem.rightBarButtonItem = doneBtn
}
self.present(navCtrl, animated: true, completion: nil)

Also we can use EFColorPicker in Storyboard:

if "showPopover" == segue.identifier {
	guard let destNav: UINavigationController = segue.destination as? UINavigationController else {
	    return
	}
	if let size = destNav.visibleViewController?.view.systemLayoutSizeFitting(UILayoutFittingCompressedSize) {
	    destNav.preferredContentSize = size
	}
	destNav.popoverPresentationController?.delegate = self
	if let colorSelectionController = destNav.visibleViewController as? EFColorSelectionViewController {
	    colorSelectionController.delegate = self
	    colorSelectionController.color = self.view.backgroundColor ?? UIColor.white

	    if UIUserInterfaceSizeClass.compact == self.traitCollection.horizontalSizeClass {
	        let doneBtn: UIBarButtonItem = UIBarButtonItem(
	            title: NSLocalizedString("Done", comment: ""),
	            style: UIBarButtonItemStyle.done,
	            target: self,
	            action: #selector(ef_dismissViewController(sender:))
	        )
	        colorSelectionController.navigationItem.rightBarButtonItem = doneBtn
	    }
	}
}

You can control the visibility of color textField by change the isColorTextFieldHidden property of EFColorSelectionViewController, for example:

isColorTextFieldHidden: true		isColorTextFieldHidden: false

For more detail, please see the demo.

Last but not the least, you should implement EFColorSelectionViewControllerDelegate so you can sense the color changes:

// MARK:- EFColorSelectionViewControllerDelegate
func colorViewController(colorViewCntroller: EFColorSelectionViewController, didChangeColor color: UIColor) {
    self.view.backgroundColor = color

    // TODO: You can do something here when color changed.
    print("New color: " + color.debugDescription)
}