swift：使用协议protocol设置颜色,UIImage的切圆角ImageWithCorn

//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,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,b: 255,a: 76)

}

}

var v2_LeftNodeBackgroundHighLightedColor : UIColor {

get {

return colorWith255RGBA(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 imageFrame = CGRect(x: 0,y: 0,width: w,height: h)

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

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

self.draw(in: imageFrame)

let image = UIGraphicsGetImageFromCurrentImageContext()

UIGraphicsEndImageContext()

return image!

}

}

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)

（编辑：李大同）

【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容!