import Foundation

import UIKit

/*
枚举 设置 图片的位置
*/

enum ButtonImagePosition : Int{

    case PositionTop =

    case Positionleft

    case PositionBottom

    case PositionRight

}

extension UIButton {
/**
imageName:图片的名字
title：button 的名字
type ：image 的位置 
Space ：图片文字之间的间距    
*/

    func setImageAndTitle(imageName:String,title:String,type:ButtonImagePosition,Space space:CGFloat)  {

        self.setTitle(title, for: .normal)

        self.setImage(UIImage(named:imageName), for: .normal)

        let imageWith :CGFloat = (self.imageView?.frame.size.width)!;

        let imageHeight :CGFloat = (self.imageView?.frame.size.height)!;

        var labelWidth :CGFloat = 0.0;

        var labelHeight :CGFloat = 0.0;

        labelWidth = CGFloat(self.titleLabel!.intrinsicContentSize.width);

        labelHeight = CGFloat(self.titleLabel!.intrinsicContentSize.height);

        var  imageEdgeInsets :UIEdgeInsets = UIEdgeInsets();

        var  labelEdgeInsets :UIEdgeInsets = UIEdgeInsets();

        switch type {

        case .PositionTop:

                imageEdgeInsets = UIEdgeInsetsMake(-labelHeight - space/2.0, , , -labelWidth);

                labelEdgeInsets = UIEdgeInsetsMake(, -imageWith, -imageHeight-space/2.0, );

            break;

        case .Positionleft:

                imageEdgeInsets = UIEdgeInsetsMake(, -space/2.0, , space/2.0);

                labelEdgeInsets = UIEdgeInsetsMake(, space/2.0, , -space/2.0);

            break;

        case .PositionBottom:

                imageEdgeInsets = UIEdgeInsetsMake(, , -labelHeight-space/2.0, -labelWidth);

                labelEdgeInsets = UIEdgeInsetsMake(-imageHeight-space/2.0, -imageWith, , );

            break;

        case .PositionRight:

                imageEdgeInsets = UIEdgeInsetsMake(, labelWidth+space/2.0, , -labelWidth-space/2.0);

                labelEdgeInsets = UIEdgeInsetsMake(, -imageWith-space/2.0, , imageWith+space/2.0);

            break;

        }

        // 4. 赋值

        self.titleEdgeInsets = labelEdgeInsets;

        self.imageEdgeInsets = imageEdgeInsets;

    }

}

/*
使用方便 用xib 中建立的 leftBtn
*/
  
leftBtn.setImageAndTitle(imageName: "hezuojigou", title: "合作机构", type: .PositionTop, Space: 0.0)