ProgressKit/ProgressUtils.swift

//
//  ProgressUtils.swift
//  ProgressKit
//
//  Created by Kauntey Suryawanshi on 09/07/15.
//  Copyright (c) 2015 Kauntey Suryawanshi. All rights reserved.
//


import AppKit

extension NSRect {
    var mid: CGPoint {
        return CGPoint(x: CGRectGetMidX(self), y: CGRectGetMidY(self))
    }
}

extension NSBezierPath {
    /// Converts NSBezierPath to CGPath
    var CGPath: CGPathRef {
        let path = CGPathCreateMutable()
        let points = UnsafeMutablePointer<NSPoint>.alloc(3)
        let numElements = self.elementCount

        if numElements > 0 {
            var didClosePath = true
            for index in 0..<numElements {
                let pathType = self.elementAtIndex(index, associatedPoints: points)
                switch pathType {
                case .MoveToBezierPathElement:
                    CGPathMoveToPoint(path, nil, points[0].x, points[0].y)
                case .LineToBezierPathElement:
                    CGPathAddLineToPoint(path, nil, points[0].x, points[0].y)
                    didClosePath = false
                case .CurveToBezierPathElement:
                    CGPathAddCurveToPoint(path, nil, points[0].x, points[0].y, points[1].x, points[1].y, points[2].x, points[2].y)
                    didClosePath = false
                case .ClosePathBezierPathElement:
                    CGPathCloseSubpath(path)
                    didClosePath = true
                }
            }
            if !didClosePath { CGPathCloseSubpath(path) }
        }
        points.dealloc(3)
        return path
    }
}

/// All the do_ invocations will be replace by do after Swift 2.0
func do_ (@noescape work: () -> ()) {
    work()
}