Refactored TRCircularProgressLayer to swift #228
Conversation
|
|
||
| @implementation TRCircularProgressLayer | ||
|
|
||
| @dynamic progress, radius; |
There was a problem hiding this comment.
Wow, this probably shouldn’t have been here!
| import UIKit | ||
|
|
||
| @objc(TRCircularProgressLayer) class CircularProgressLayer: CALayer { | ||
| @objc var progress: CGFloat = CGFloat(0) |
There was a problem hiding this comment.
This could be either : CGFloat = 0 or = CGFloat(0) (I usually prefer the former).
| override init() { | ||
| super.init() | ||
| self.actions = [ | ||
| "bounds": NSNull(), |
There was a problem hiding this comment.
Curious, does a nil literal work here? AFAIK nil should be bridged to NSNull, but I’m not sure if that works for CAAction.
| } | ||
|
|
||
| override func draw(in ctx: CGContext) { | ||
| let center = CGPoint(x: self.bounds.width / 2.0, y: self.bounds.height / 2.0) |
There was a problem hiding this comment.
I think that in order to match the previous behaviour of TRCGPointMakeIntegral(), these should be round()ed. Maybe a CGPoint extension with a func integral() that returns a new point with each dimension rounded?
|
|
||
| override func draw(in ctx: CGContext) { | ||
| let center = CGPoint(x: self.bounds.width / 2.0, y: self.bounds.height / 2.0) | ||
| let progress = min(self.progress, 1.0 - CGFloat.ulpOfOne) |
There was a problem hiding this comment.
I think this could drop the explicit CGFloat and become .ulpOfOne.
| ctx.setStrokeColor(UIColor.clear.cgColor) | ||
| ctx.addArc( | ||
| center: center, | ||
| radius: CGFloat(radius), |
There was a problem hiding this comment.
Is radius already a CGFloat?
| radius: CGFloat(radius), | ||
| startAngle: 0.0, | ||
| endAngle: 2 * .pi, | ||
| clockwise: false |
There was a problem hiding this comment.
The previous version of this specified clockwise as YES.
| progressPath.move(to: center) | ||
| progressPath.addArc( | ||
| center: center, | ||
| radius: CGFloat(self.radius), |
| progressPath.addArc( | ||
| center: center, | ||
| radius: CGFloat(self.radius), | ||
| startAngle: 3.0 * .pi, |
There was a problem hiding this comment.
This was previously 3.0f * (CGFloat)M_PI_2, or 1.5 * .pi.
|
|
||
| override class func needsDisplay(forKey key: String) -> Bool { | ||
| switch key { | ||
| case "progress", "radius", "outerRingWidth": |
There was a problem hiding this comment.
You could use #keyPath(progress), #keyPath(radius), etc., here to avoid the string literals.
No description provided.