FlexibleImage is implemented with the hope that anyone could easily develop an app that provides features such as Camera Filter and Theme. When you write code in the "Method Chaining" style, the effect is applied in the appropriate order.

You may want to see Examples section first if you'd like to see the actual code.

? Usage


Example Image

import UIKit

import FlexibleImage

/// Generate Example
let image1 = UIImage
        color: UIColor.blue,
        size: CGSize(width: 100, height: 100)
    .offset(CGPoint(x: 25, y: 0))
    .margin(UIEdgeInsets(top: 5, left: 5, bottom: 5, right: 5))
    .padding(UIEdgeInsets(top: 15, left: 15, bottom: 15, right: 15))
    .normal(color: UIColor.white)
    .border(color: UIColor.red, lineWidth: 5, radius: 50)
    .background(color: UIColor.darkGray)

/// Effect Example
let image2 = UIImage(named: "macaron.jpg")!
    .outputSize(CGSize(width: 250, height: 250))
    .exclusion(color: UIColor(red: 0, green: 0, blue: 0.352941176, alpha: 1.0))
    .linearDodge(color: UIColor(red: 0.125490196, green: 0.058823529, blue: 0.192156863, alpha: 1.0))
    .hardMix(color: UIColor(red: 0.3, green: 0.3, blue: 0.3, alpha: 1.0))

/// Mix Example
let image3 = image2!.adjust()
            .outputSize(CGSize(width: 250, height: 250))

/// Clipping Example
let image4 = image3!.adjust()

/// Pipeline
let pipeline = ImagePipeline()
        .exclusion(color: UIColor(red: 0, green: 0, blue: 0.352941176, alpha: 1.0))
        .linearDodge(color: UIColor(red: 0.125490196, green: 0.058823529, blue: 0.192156863, alpha: 1.0))

let image5 = pipeline.image(image2)
let image6 = pipeline.image(image1)


Use CocoaPods command $ pod try FlexibleImage to try Playground!

? Installation

CocoaPods (For iOS 8+ projects)

KWDrawerController is available on CocoaPods. Add the following to your Podfile:

/// Swift 3
pod 'FlexibleImage', '~> 1.7'

/// Swift 4
pod 'FlexibleImage', '~> 1.9'

Carthage (For iOS 8+ projects)

github "kawoou/FlexibleImage" ~> 1.9


You can either simply drag and drop the Sources folder into your existing project.

? Supported Features


Type Parameter Comments
background() Color Background color.
opacity() Float Change the transparency of the image.
alphaProcess() Bool Whether to include an alpha value during image processing.
blendMode() CGBlendMode (Deprecated) Blend mode of the image
offset() CGPoint The position of the image to be a drawing.
rotate() radius: CGFloat
fixedSize: CGSize [Optional]
Rotate an image.
size() CGSize The size of the image to be a drawing.
outputSize() CGSize The size of a Output image.
scaling() CGSize Scaling the image (ratio)
margin() EdgeInsets Margin size
padding() EdgeInsets Padding size
corner() CornerType To clipping corner radius.
border() color: Color
lineWidth: CGFloat
radius: CGFloat
Drawing a border.
image() Run the pipeline to create the Output image.


Type Parameter Comments
greyscale() threshold: Float [Optional]
monochrome() threshold: Float [Optional]
vibrance() vibrance: Float [Optional]
solarize() threshold: Float [Optional]
posterize() colorLevel: Float [Optional]
blur() blurRadius: Float [Optional] Not supported by watchOS.
brightness() brightness: Float [Optional]
chromaKey() color: FIColor
threshold: Float [Optional]
smoothing: Float [Optional]
contrast() threshold: Float [Optional]
gamma() gamma: Float [Optional]


Type Parameter
normal() Color
multiply() Color
lighten() Color
darken() Color
average() Color
add() Color
subtract() Color
difference() Color
negative() Color
screen() Color
exclusion() Color
overlay() Color
softLight() Color
hardLight() Color
colorDodge() Color
colorBurn() Color
linearDodge() Color
linearBurn() Color
linearLight() Color
vividLight() Color
pinLight() Color
hardMix() Color
reflect() Color
glow() Color
phoenix() Color
hue() Color
saturation() Color
color() Color
luminosity() Color


Type Parameter Comments
algorithm() AlgorithmType Create an image by writing a formula directly on a pixel-by-pixel basis.
custom() ContextType Add processing directly using Core Graphics.


Type Comments
rect() Create a rectangular image.
circle() Create a circle image.
append() Combine images to create a single image.

Pipeline (ImagePipeline class)

Type Parameter Return Comments
image() FIImage FIImage? Create the Output image.
image() CGImage CGImage? Create the Output image.
image() CVImageBuffer CGImage? Create the Output image.

? Example

? Changelog

  • 1.0
    • First Release.
  • 1.1
    • Add to clipping corner radius.
  • 1.2
    • Support tvOS, macOS.
  • 1.3
    • Support watchOS.
    • Added monochrome, sepia, vibrance, solarize, posterize filters.
    • Update resize methods.
  • 1.4
    • Add blur filter.
    • Optimize build time.
    • Setup TravisCI
    • Support carthage.
  • 1.5
    • Support Metal depending on the situation.
    • Added brightness, chromaKey, swizzling, contrast, gamma filters.
  • 1.6 (Hotfix!)
    • Fix issue Metal library path on Cocoapods.
  • 1.7
    • Pipelined implementation for stream processing.
    • Fix rendering bug due to image orientation (Thanks to Kwonyoon Kang)
  • 1.8
    • Support for Swift 4 and Xcode 9
  • 1.9
    • Support for Swift 4.1 and Xcode 9.3
  • 1.10
    • Support for Swift 4.2 and Xcode 10

? Requirements

  • iOS 8.0+
  • tvOS 9.0+
  • macOS 10.10+
  • watchOS 2.0+
  • Swift 3.0+

? License

FlexibleImage is under MIT license. See the LICENSE file for more info.