Skip to content

Latest commit

聽

History

History
300 lines (206 loc) 路 5.83 KB

UIImage.md

File metadata and controls

300 lines (206 loc) 路 5.83 KB
Raw

EXTENSION

UIImage

public extension UIImage

Properties

isSquare

var isSquare: Bool

Is square aspect ratio

sizeOnDisk

var sizeOnDisk: String

Size in KB or MB

heightForScreenWidth

var heightForScreenWidth: CGFloat

Height for screen width

orientationFixed

var orientationFixed: UIImage

Correct the direction of the picture so that it positioned correctly

  • Returns: Image

Methods

init(qrCodeFrom:)

convenience init?(qrCodeFrom string: String)

Create QR code from string

  • Parameter string: String for QR code

Parameters

Name Description
string String for QR code

withStarShape(size:strokeColor:lineWidth:fillColor:)

static func withStarShape(size: CGSize, strokeColor: UIColor = .clear, lineWidth: CGFloat = 2.0, fillColor: UIColor?) -> UIImage?

Draw a star

  • Parameters:
    • size: Size
    • strokeColor: Stroke color
    • lineWidth: Line width
    • fillColor: Fill color
  • Returns: Drawn star as UIImage

Parameters

Name Description
size Size
strokeColor Stroke color
lineWidth Line width
fillColor Fill color

withTintColor(_:)

func withTintColor(_ color: UIColor) -> UIImage?

Returns an identical image with specified tint color. Note that the returned image is with rendering mode .alwaysOriginal

Parameters

Name Description
color The tint color

aspectHeight(for:)

func aspectHeight(for width: CGFloat) -> CGFloat

Scale the height of the given width proportionally

  • parameter width: width

  • returns: New height

Parameters

Name Description
width width

aspectWidth(for:)

func aspectWidth(for height: CGFloat) -> CGFloat

Scale the width of the given height proportionally

  • parameter height: Height

  • returns: New width

Parameters

Name Description
height Height

aspectFitSize(forBindingSize:)

func aspectFitSize(forBindingSize binding: CGSize) -> CGSize

Keep the aspect ratio and return the fitting size of the given size

  • Parameter binding: Size
  • Returns: New size

Parameters

Name Description
binding Size

image(withPureColor:for:rounded:)

class func image(withPureColor color: UIColor, for rect: CGRect, rounded: Bool) -> UIImage?

Get an single-colored image

  • Parameters:
    • color: The color
    • rect: The rect to draw in a CGContext.
  • Returns: An single-colored image object, nil if any problems occur, such as CGRect.zero got passed.

Parameters

Name Description
color The color
rect The rect to draw in a CGContext.

subImage(in:)

func subImage(in rect: CGRect) -> UIImage?

Get certain part of image

  • Parameter rect: Part of the image
  • Returns: Image

Parameters

Name Description
rect Part of the image

resized(to:)

func resized(to size: CGSize) -> UIImage?

Redraw the image to the specified size

  • Parameter size: Size
  • Returns: Image

Parameters

Name Description
size Size

resizedImageWithAspectFitSize(forBindingSize:)

func resizedImageWithAspectFitSize(forBindingSize binding: CGSize) -> UIImage?

square()

func square() -> UIImage?

Resize the image so that its width and height are equal.

  • Returns: A newly created image.

with(backgroundColor:cornerRadius:insets:)

func with(backgroundColor: UIColor, cornerRadius: CGFloat, insets: UIEdgeInsets) -> UIImage?

Redraw a new image with the given requirements.

  • Parameters:
    • backgroundColor: The background color of the image.
    • cornerRadius: The corner radius of the image, pass 0.0 if you perfer a squared one.
    • insets: The inset to apply to the image.
  • Returns: A newly created image.

Parameters

Name Description
backgroundColor The background color of the image.
cornerRadius The corner radius of the image, pass 0.0 if you perfer a squared one.
insets The inset to apply to the image.

arrowHead(direction:color:size:lineWidth:)

static func arrowHead(direction: ArrowDirection, color: UIColor, size: CGSize, lineWidth: CGFloat = 2.0) -> UIImage?

borderImage(size:backgroundColor:borderColor:borderWidth:cornerRadius:)

class func borderImage(size: CGSize, backgroundColor: UIColor, borderColor: UIColor, borderWidth: CGFloat, cornerRadius: CGFloat) -> UIImage?

Draw a image with a border

  • Parameters:
    • size: size
    • backgroundColor: color
    • borderColor: border color
    • borderWidth: border width
    • cornerRadius: radius
  • Returns: New image

Parameters

Name Description
size size
backgroundColor color
borderColor border color
borderWidth border width
cornerRadius radius

buttonBackgroundBorderImage(backgroundColor:borderColor:borderWidth:cornerRadius:)

class func buttonBackgroundBorderImage(backgroundColor: UIColor, borderColor: UIColor, borderWidth: CGFloat, cornerRadius: CGFloat) -> UIImage?

Draw background image

  • Parameters:
    • backgroundColor: color
    • borderColor: border color
    • borderWidth: width
    • cornerRadius: radius
  • Returns: New image

Parameters

Name Description
backgroundColor color
borderColor border color
borderWidth width
cornerRadius radius