//使用协议 方便以后切换颜色配置文件、或者做主题配色之类乱七八糟产品经理最爱的功能

protocol V2EXColorProtocol{

var v2_backgroundColor: UIColor { get }

var v2_navigationBarTintColor: UIColor { get }

var v2_TopicListTitleColor : UIColor { get }

var v2_TopicListUserNameColor : UIColor { get }

var v2_TopicListDateColor : UIColor { get }

var v2_LinkColor : UIColor { get }

var v2_TextViewBackgroundColor: UIColor { get }

var v2_CellWhiteBackgroundColor : UIColor { get }

var v2_NodeBackgroundColor : UIColor { get }

var v2_SeparatorColor : UIColor { get }

var v2_LeftNodeBackgroundColor : UIColor { get }

var v2_LeftNodeBackgroundHighLightedColor : UIColor { get }

var v2_LeftNodeTintColor: UIColor { get }

/// 小红点背景颜色

var v2_NoticePointColor : UIColor { get }

var v2_ButtonBackgroundColor : UIColor { get }

}

class V2EXDefaultColor: NSObject,V2EXColorProtocol {

static let sharedInstance = V2EXDefaultColor()

fileprivate override init(){

super.init()

}

var v2_backgroundColor : UIColor{

get{

return colorWith255RGB(242, g: 243, b: 245);

}

}

var v2_navigationBarTintColor : UIColor{

get{

return colorWith255RGB(102, g: 102, b: 102);

}

}

var v2_TopicListTitleColor : UIColor{

get{

return colorWith255RGB(15, g: 15, b: 15);

}

}

var v2_TopicListUserNameColor : UIColor{

get{

return colorWith255RGB(53, g: 53, b: 53);

}

}

var v2_TopicListDateColor : UIColor{

get{

return colorWith255RGB(173, g: 173, b: 173);

}

}

var v2_LinkColor : UIColor {

get {

return colorWith255RGB(119, g: 128, b: 135)

}

}

var v2_TextViewBackgroundColor :UIColor {

get {

return colorWith255RGB(255, g: 255, b: 255)

}

}

var v2_CellWhiteBackgroundColor :UIColor {

get {

return colorWith255RGB(255, g: 255, b: 255)

}

}

var v2_NodeBackgroundColor : UIColor {

get {

return colorWith255RGB(242, g: 242, b: 242)

}

}

var v2_SeparatorColor : UIColor {

get {

return colorWith255RGB(190, g: 190, b: 190)

}

}

var v2_LeftNodeBackgroundColor : UIColor {

get {

return colorWith255RGBA(255, g: 255, b: 255, a: 76)

}

}

var v2_LeftNodeBackgroundHighLightedColor : UIColor {

get {

return colorWith255RGBA(255, g: 255, b: 255, a: 56)

}

}

var v2_LeftNodeTintColor : UIColor {

get {

return colorWith255RGBA(0, g: 0, b: 0, a: 140)

}

}

var v2_NoticePointColor : UIColor {

get {

return colorWith255RGB(207, g: 70, b: 71)

}

}

var v2_ButtonBackgroundColor : UIColor {

get {

return colorWith255RGB(85, g: 172, b: 238)

}

}

}

/

import UIKit

extension UIImage {

func roundedCornerImageWithCornerRadius(_ cornerRadius:CGFloat) -> UIImage {

let w = self.size.width

let h = self.size.height

var targetCornerRadius = cornerRadius

if cornerRadius < 0 {

targetCornerRadius = 0

}

if cornerRadius > min(w, h) {

targetCornerRadius = min(w,h)

}

let p_w_picpathFrame = CGRect(x: 0, y: 0, width: w, height: h)

UIGraphicsBeginImageContextWithOptions(self.size, false, UIScreen.main.scale)

UIBezierPath(roundedRect: p_w_picpathFrame, cornerRadius: targetCornerRadius).addClip()

self.draw(in: p_w_picpathFrame)

let p_w_picpath = UIGraphicsGetImageFromCurrentImageContext()

UIGraphicsEndImageContext()

return p_w_picpath!

}

}

使用的地方

/// 节点信息label的圆角背景图

fileprivate static var nodeBackgroundImage_Default =

createImageWithColor( V2EXDefaultColor.sharedInstance.v2_NodeBackgroundColor ,size: CGSize(width: 10, height: 20))

.roundedCornerImageWithCornerRadius(2)

.stretchableImage(withLeftCapWidth: 3, topCapHeight: 3)