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https://github.com/nerdycat/Cupcake

An easy way to create and layout UI components for iOS (Swift version).
https://github.com/nerdycat/Cupcake

constraints layout nsattributedstring stackview static-tableview swift ui uilabel-link

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An easy way to create and layout UI components for iOS (Swift version).

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README 

        


cupcake






Swift4

Swift5

Platform

Version

License




## Introduction

Cupcake is a framework that allow you to easily create and layout UI components for iOS 8.0+. It use chaining syntax and provides some frequent used functionalities that are missing in UIKit. 



---

## Easy way to create UIFont, UIImage and UIColor objects

	

You can create UIFont object with `Font()` function.



	Font(15)                    //UIFont.systemFontOfSize(15)

	Font("15")                  //UIFont.boldSystemFontOfSize(15)

	Font("body")                //UIFontTextStyle.body

	Font("Helvetica,15")        //helvetica with size of 15

	

You can create UIImage object with `Img()` function.



	Img("imageName")            //image with name

	Img("#imageName")           //prefixed with # will return a stretchable image

	Img("$imageName")           //prefixed with $ will return a template image

	Img("red")                  //1x1 size image with red color



You can create UIColor object with `Color()` function.



	Color("red")                //UIColor.red

	Color("0,0,255")            //RGB color

	Color("#0000FF")            //Hex color

	Color("random")             //random color

    

    Color("red,0.5")            //even with alpha

    Color("0,0,255,0.8")

    Color("#0000FF,0.5")

    Color("random,0.2")

	

    Color(Img("pattern"))       //or image



## Easy way to create NSAttributedString objects and String manipulations



You can create NSAttributedString object with `AttStr()` function.



	AttStr("hello").color("red")                        //red color string

	AttStr("hello, 101").select("[0-9]+").underline     //101 with underline

	AttStr("A smile ", Img("smile"), " !!")             //insert image attachment

	

String manipulations:



	Str(1024)                                           //convert anything to string

	Str("1 + 1 = %d", 2)                                //formatted string

	

	"hello world".subFrom(2).subTo("ld")                //"llo wor"

	"hello world".subAt(1..<4)                          //"ell"

	"hello 12345".subMatch("\\d+")                      //"12345"



## 4 basic UI components



You can create UIView, UILabel, UIImageView and UIButton objects simply by using `View`, `Label`, `ImageView` and `Button` variables.



	View.bg("red").border(1).radius(4).shadow(0.7, 2)

	

	Label.str("hello\ncupcake").font(30).color("#FB3A9F").lines(2).align(.center)

	

	ImageView.img("cat").mode(.scaleAspectFit)

	

	Button.str("kitty").font("20").color("#CFC8AC").highColor("darkGray").onClick({ _ in

        print("click")

	}).img("cat").padding(10).border(1, "#CFC8AC")

	

As you can see, `.font()`, `.img()` and `.color()` can take the same parameters as `Font()`, `Img()` and `Color()`. Also you can pass String, NSAttributedString or any other values to `.str()`.



## Enhancements



You can add click handler and adjust click area to any view.   

To round a view with half height no matter what size it is, simply use `.radius(-1)`. 



	ImageView.img("mario").radius(-1).touchInsets(-40).onClick({ _ in

	    print("extending touch area")

	})



You can add line spacing and link handling to UILabel.



	let str = "Lorem ipsum 20 dolor sit er elit lamet, consectetaur cillium #adipisicing pecu, sed do #eiusmod tempor incididunt ut labore et 3.14 dolore magna aliqua."

	let attStr = AttStr(str).select("elit", .number, .hashTag, .range(-7, 6)).link()

	

	Label.str(attStr).lineGap(10).lines().onLink({ text in

	    print(text)

	})

	

`.bg()` allow you to set background for any view with color or image.    

`.highBg()` allow you to set highlighted background for UIButton (which is very useful).    

Also you can add spacing to title and image within button or even exchange their position. 



	Button.str("More").img("arrow").color("black").bg("lightGray,0.3").highBg("lightGray").gap(5).reversed()

	

You can add placeholder and limit text input to UITextField and UITextView.



	TextField.hint("placeholder").maxLength(10).padding(0, 10).keyboard(.numberPad)

	

	TextView.hint("placeholder").maxLength(140).padding(10).onChange({ textView in

	    print(textView.text)

	})

    



## Easy way to Setup Constraints



You use `.pin()` to setup simple constraints relative to self or superview. 



	.pin(200)                       //height constriant

	.pin(100, 200)                  //width and height constraints			

	.pin(.xy(50, 50))               //left and top constraints relative to superview

	.pin(.maxXY(50, 50))            //right and bottom constraints relative to superview

	.pin(.center)                   //center equals to superview

	 ...

	.pin(.lowHugging)               //low content hugging priority, useful when embed in StackView

	.pin(.lowRegistance)            //low content compression resistance priority, useful when embed in StackView



You use `.makeCons()` and `.remakeCons()` to setup any constraints just like SnapKit.



	.makeCons({

   	    $0.left.top.equal(50, 50)

	    $0.size.equal(view2).multiply(0.5, 0.7)

	})

	

	.remakeCons({ make in

	    make.origin.equal(view2).offset(10, 20)

	    make.width.equal(100)

	    make.height.equal(view2).multiply(2)

	})

	

You use `.embedIn()` to embed inside superview with edge constriants.



	.embedIn(superview)                     //top: 0,  left: 0,  bottom: 0,  right: 0

    .embedIn(superview, 10)                 //top: 10, left: 10, bottom: 10, right: 10

    .embedIn(superview, 10, 20)             //top: 10, left: 20, bottom: 10, right: 20

    .embedIn(superview, 10, 20, 30)         //top: 10, left: 20, right: 30

    .embedIn(superview, 10, 20, 30, 40)     //top: 10, left: 20, bottom: 30, right: 40

    .embedIn(superview, 10, 20, nil)        //top: 10, left: 20



## Easy way to Layout



Setup constraints for every views manually could be tedious. Luckily, you can build most of the layouts by simply using `HStack()` and `VStack()` (which are similar to UIStackView) and hopefully without creating any explicit constirants. 



	indexLabel = Label.font(17).color("darkGray").align(.center).pin(.w(44))

   	iconView = ImageView.pin(64, 64).radius(10).border(1.0 / UIScreen.main.scale, "#CCC")

        

	titleLabel = Label.font(15).lines(2)

	categoryLabel = Label.font(13).color("darkGray")

        

	ratingLabel = Label.font(11).color("orange")

	countLabel = Label.font(11).color("darkGray")

        

	actionButton = Button.font("15").color("#0065F7").border(1, "#0065F7").radius(3)

	actionButton.highColor("white").highBg("#0065F7").padding(5, 10)

        

	iapLabel = Label.font(9).color("darkGray").lines(2).str("In-App\nPurchases").align(.center)

        

	let ratingStack = HStack(ratingLabel, countLabel).gap(5)

 	let midStack = VStack(titleLabel, categoryLabel, ratingStack).gap(4)

	let actionStack = VStack(actionButton, iapLabel).gap(4).align(.center)

        

 	HStack(indexLabel, iconView, 10, midStack, "<-->", 10, actionStack).embedIn(self.contentView, 10, 0, 10, 15)

 	

 appStore



## Lightweight Style



Some of the chainable properties can be set as style.



	//local style

	let style1 = Styles.color("darkGray").font(15)

	Label.styles(style1).str("hello world")

	

	//global style

	Styles("style2").bg("red").padding(10).border(3, "#FC6560").radius(-1)

	Button.styles(style1, "style2").str("hello world")

	

	//copy style from view

	let style3 = Styles(someButton)

	Button.styles(someButton).str("hello world")

	



## Others



You can create static tableView with `PlainTable()` or `GroupTable()` functions.

	

	let titles = ["Basic", "Enhancement", "Stack", "StaticTable", "Examples"]

	PlainTable(titles).onClick({ row in

	    print(row.indexPath)

	})



You can present `Alert` And `ActionSheet` using the chaining syntax as well.



	Alert.title("Alert").message("message go here").action("OK").show()

	

	ActionSheet.title("ActionSheet").message("message go here").action("Action1", {

 	    print("Action1")

 	}).action("Action2", {

 	    print("Action2")

 	}).cancel("Cancel").show()



## Installation



### Cocoapods

Cupcake can be added to your project using CocoaPods by adding the following line to your Podfile:



	pod "Cupcake"



### Carthage

If you're using Carthage you can add a dependency on Cupcake by adding it to your Cartfile:



	github "nerdycat/Cupcake"