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https://github.com/ruddfawcett/Notepad

[iOS] A fully themeable markdown editor with live syntax highlighting.
https://github.com/ruddfawcett/Notepad

cocoapods ios markdown notepad regex syntax-highlighter theme uitextview

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[iOS] A fully themeable markdown editor with live syntax highlighting.

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README 

        
![](https://cdn.rawgit.com/ruddfawcett/Notepad/master/resources/header.svg)



[![Version](https://img.shields.io/github/release/ruddfawcett/Notepad.svg)](https://github.com/ruddfawcett/Notepad/releases) [![Carthage compatible](https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat)](https://github.com/Carthage/Carthage) [![CocoaPods compatible](https://img.shields.io/cocoapods/v/Notepad.svg)](https://cocoapods.org/pods/Notepad)



## Usage



```swift

let notepad = Notepad(frame: view.bounds, themeFile: "one-dark")

view.addSubview(notepad)

```

Notepad is just like any other UITextView, but you need to use the convenience initializer in order to use the themes. To create a new theme, copy one of the existing themes and edit the JSON.



Check out the [Xcode project](Example.xcodeproj) for an [example](Example). For full documentation read [the code](Notepad/Notepad.swift).



### Extending an Existing Text View with Notepad Features



If you cannot work with the `Notepad` subclass directly for some reason, you can set up an existing `UITextView` or `NSTextView` on your own.



For iOS, you have to initialize all TextKit components yourself. Take the following as a blueprint where you can swap in custom objects:



```swift

class ViewController: UIViewController {

    var textView: UITextView!

    

    override func viewDidLoad() {

        super.viewDidLoad()



        let containerSize = CGSize(width: self.view.bounds.width, height: CGFloat.greatestFiniteMagnitude)

        let container = NSTextContainer(size: containerSize)

        container.widthTracksTextView = true



        let layoutManager = NSLayoutManager()

        layoutManager.addTextContainer(container)



        let storage = Storage()

        let theme = Theme("one-dark")

        storage.theme = theme

        storage.addLayoutManager(layoutManager)



        let editor = UITextView(frame: self.view.bounds, textContainer: container)

        editor.backgroundColor = theme.backgroundColor

        editor.tintColor = theme.tintColor

        editor.autoresizingMask = [.flexibleWidth, .flexibleHeight]

    }

}



```



And for macOS:



```swift

class ViewController: NSViewController {

    @IBOutlet var textView: NSTextView!

    let storage = Storage()



    override func viewDidLoad() {

        super.viewDidLoad()



        let theme = Theme("one-dark")

        storage.theme = theme

        textView.backgroundColor = theme.backgroundColor

        textView.insertionPointColor = theme.tintColor

        textView.layoutManager?.replaceTextStorage(storage)

    }

}

```



## Themes



Take a look at all of the [themes and swatches](themes.md) when choosing the theme for your Notepad, or as inspiration for a new one.



You can find all of the raw themes in the [themes folder](Notepad/themes), and the file names are case-sensitive.



### Custom Regex

Using regex, you can match custom patterns in your Notepad editor by passing a `regex` attribute in your theme. For example, one that highlights Twitter handles in a teal color:



```json

"handle": {

  "regex": "[@＠][a-zA-Z0-9_]{1,20}",

  "color": "#78ddd5"

}

```



## Installation



Copy the source from the Notepad folder to your project, or add Notepad to your Podfile if you're using CocoaPods.