KDCircularProgress

KDCircularProgress master branch is now compatible with Swift 3 (tag 1.5.2). Check Swift 2 (tag 1.4.1) & Swift 2.3 (tag 1.4.5) branches for older versions.

KDCircularProgress is a circular progress view written in Swift. It makes it possible to have gradients in the progress view, along with glows and animations.

KDCircularProgress also has IBInspectable and IBDesignable support, so you can configure and preview inside the Interface Builder.

Here's an example

Youtube Link

progress = KDCircularProgress(frame: CGRect(x: 0, y: 0, width: 300, height: 300))
progress.startAngle = -90
progress.progressThickness = 0.2
progress.trackThickness = 0.6
progress.clockwise = true
progress.gradientRotateSpeed = 2
progress.roundedCorners = false
progress.glowMode = .forward
progress.glowAmount = 0.9
progress.set(colors: UIColor.cyan ,UIColor.white, UIColor.magenta, UIColor.white, UIColor.orange)
progress.center = CGPoint(x: view.center.x, y: view.center.y + 25)
view.addSubview(progress)

Installation

It's on CocoaPods under the name (you guessed it!) KDCircularProgress
Just drag KDCircularProgress.swift into your project. Carthage support is on To-do list.

CocoaPods

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

pod 'KDCircularProgress'

Manually

Just drag KDCircularProgress.swift into your project.

Carthage

Carthage support is on To-do list.

Properties

####progressColors: [UIColor] The colors used to generate the gradient of the progress. You can also set this using the variadic setColors(UIColor...) method. A gradient is used only if there is more than one color. A fill is used otherwise. The default is a white fill.

####angle: Int The angle of the progress. Between 0 and 360 (inclusive). Simply change its value in order to change the visual progress of the component. Default is 0.

####startAngle: Int The angle at which the progress will begin. Between 0 and 360 (inclusive), however you can pass any negative or positive values and the component will mod them automatically to the required range. Default is 0.

####clockwise: Bool Clockwise if true, Counter-clockwise if false. Default is true.

####roundedCorners: Bool When true, the ends of the progress track will be drawn with a half circle radius. Default is false.

####gradientRotateSpeed: CGFloat Describes how many times the underlying gradient will perform a 2π rotation for each full cycle of the progress. Integer values recommended. Default is 0.

####glowAmount: CGFloat The intensity of the glow. Between 0 and 1.0. Default is 1.0.

####glowMode: KDCircularProgressGlowMode

.forward - The glow increases proportionaly to the angle. No glow at 0 degrees and full glow at 360 degrees.
.reverse - The glow increases inversely proportional to the angle. Full glow at 0 degrees and no glow at 360 degrees.
.constant - Constant glow.
.noGlow - No glow

The default is .forward

####progressThickness: CGFloat The thickness of the progress. Between 0 and 1. Default is 0.4

####trackThickness: CGFloat The thickness of the background track. Between 0 and 1. Default is 0.5

####trackColor: UIColor The color of the background track. Default is UIColor.blackColor().

####progressInsideFillColor: UIColor The color of the center of the circle. Default is UIColor.clearColor().

##Methods

override public init(frame: CGRect)

Initialize with a frame. Please only use square frames.

convenience public init(frame:CGRect, colors: UIColor...)

Initialize with a frame and the gradient colors.

public func set(colors: UIColor...)
public func set(colors: [UIColor])

Set the colors for the progress gradient.

public func animateFromAngle(fromAngle: Int, toAngle: Int, duration: NSTimeInterval, relativeDuration: Bool = true, completion: ((Bool) -> Void)?)

Animate the progress from an initial value to a final value, with a completion block that fires after the animation is done.

relativeDuration - specify if the duration is for the specific animation or is the duration that would make a full turn.

public func animateToAngle(toAngle: Int, duration: NSTimeInterval, completion: ((Bool) -> Void)?)

Animate the progress from the current state to a target value.

public func pauseAnimation()

Pause the animation, if any.

public func isAnimating() -> Bool

Check if there's an active animation.

##Misc Prefering light colors in the gradients gives better results. As mentioned before, use square frames. Rectangular frames are not tested and might produce unexpected results.

##To-Do

##Contact Drop me an email if you want discuss anything further.

##License

The MIT License (MIT)

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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