0001    //  SwiftHEXColors.swift
0002    //
0003    // Copyright (c) 2014 Doan Truong Thi
0004    //
0005    // Permission is hereby granted, free of charge, to any person obtaining a copy
0006    // of this software and associated documentation files (the "Software"), to deal
0007    // in the Software without restriction, including without limitation the rights
0008    // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
0009    // copies of the Software, and to permit persons to whom the Software is
0010    // furnished to do so, subject to the following conditions:
0011    //
0012    // The above copyright notice and this permission notice shall be included in
0013    // all copies or substantial portions of the Software.
0014    //
0015    // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
0016    // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
0017    // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
0018    // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
0019    // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
0020    // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
0021    // THE SOFTWARE.
0022    
0023    #if os(iOS) || os(tvOS)
0024    	import UIKit
0025    	typealias SWColor = UIColor
0026    #else
0027    	import Cocoa
0028    	typealias SWColor
SwiftHEXColors.swift:32
public extension SWColor { = NSColor
0029    #endif
0030    
0031    /// An extension of UIColor (on iOS) or NSColor (on OSX) providing HEX color handling.
0032    public extension SWColor {
0033    	/**
0034    	 Create non-autoreleased color with in the given hex string. Alpha will be set as 1 by default.
0035    
0036    	 - parameter hexString: The hex string, with or without the hash character.
0037    	 - returns: A color with the given hex string.
0038    	 */
0039    	public convenience init?(hexString: String) {
0040    		self.init(hexString: hexString, alpha: 1.0)
0041    	}
0042    
0043    	/**
0044    	 Create non-autoreleased color with in the given hex string and alpha.
0045    
0046    	 - parameter hexString: The hex string, with or without the hash character.
0047    	 - parameter alpha: The alpha value, a floating value between 0 and 1.
0048    	 - returns: A color with the given hex string and alpha.
0049    	 */
0050    	public convenience init
SwiftHEXColors.swift:40
		self.init(hexString: hexString, alpha: 1.0)
SwiftHEXColors.swift:114
		self.init(hexString: hexString as String , alpha: alpha)?(hexString: String, alpha: Float) {
0051    		var hex = hexString
0052    
0053    		// Check for hash and remove the hash
0054    		if hex.hasPrefix("#") {
0055    			hex = hex.substringFromIndex(hex.startIndex.advancedBy())
0056    		}
0057    
0058    		if (hex.rangeOfString("(^[0-9A-Fa-f]{6}$)|(^[0-9A-Fa-f]{3}$)", options: .RegularExpressionSearch) != nil) {
0059    
0060    			// Deal with 3 character Hex strings
0061    			if hex.characters.count ==  {
0062    				let redHex   = hex.substringToIndex(hex.startIndex.advancedBy())
0063    				let greenHex = hex.substringWithRange(Range<String.Index>(start: hex.startIndex.advancedBy(), end: hex.startIndex.advancedBy()))
0064    				let blueHex  = hex.substringFromIndex(hex.startIndex.advancedBy())
0065    
0066    				hex = redHex + redHex + greenHex + greenHex + blueHex + blueHex
0067    			}
0068    
0069    			let redHex = hex.substringToIndex(hex.startIndex.advancedBy())
0070    			let greenHex = hex.substringWithRange(Range<String.Index>(start: hex.startIndex.advancedBy(), end: hex.startIndex.advancedBy()))
0071    			let blueHex = hex.substringWithRange(Range<String.Index>(start: hex.startIndex.advancedBy(), end: hex.startIndex.advancedBy()))
0072    
0073    			var redInt:   CUnsignedInt = 
0074    			var greenInt: CUnsignedInt = 
0075    			var blueInt:  CUnsignedInt = 
0076    
0077    			NSScanner(string: redHex).scanHexInt(&redInt)
0078    			NSScanner(string: greenHex).scanHexInt(&greenInt)
0079    			NSScanner(string: blueHex).scanHexInt(&blueInt)
0080    
0081    			self.init(red: CGFloat(redInt) / 255.0, green: CGFloat(greenInt) / 255.0, blue: CGFloat(blueInt) / 255.0, alpha: CGFloat(alpha))
0082    		}
0083    		else {
0084    			// Note:
0085    			// The swift 1.1 compiler is currently unable to destroy partially initialized classes in all cases,
0086    			// so it disallows formation of a situation where it would have to.  We consider this a bug to be fixed
0087    			// in future releases, not a feature. -- Apple Forum
0088    			self.init()
0089    			return nil
0090    		}
0091    	}
0092    
0093    	/**
0094    	 Create non-autoreleased color with in the given hex value. Alpha will be set as 1 by default.
0095    
0096    	 - parameter hex: The hex value. For example: 0xff8942 (no quotation).
0097    	 - returns: A color with the given hex value
0098    	 */
0099    	public convenience init?(hex: Int) {
0100    		self.init(hex: hex, alpha: 1.0)
0101    	}
0102    
0103    	/**
0104    	 Create non-autoreleased color with in the given hex value and alpha
0105    
0106    	 - parameter hex: The hex value. For example: 0xff8942 (no quotation).
0107    	 - parameter alpha: The alpha value, a floating value between 0 and 1.
0108    	 - returns: color with the given hex value and alpha
0109    	 */
0110    	public convenience init
SwiftHEXColors.swift:100
		self.init(hex: hex, alpha: 1.0)?(hex: Int, alpha: Float) {
0111    		var hexString = String(format: "%2X", hex)
0112            let leadingZerosString = String(count:  - hexString.characters.count, repeatedValue: Character("0"))
0113            hexString = leadingZerosString + hexString
0114    		self.init(hexString: hexString as String , alpha: alpha)
0115    	}
0116    }
0117