ihealth_ios/Inhealth/IHButtonView.swift

//
//  IHButtonView.swift
//  Inhealth
//
//  Created by weclouds on 2020/3/17.
//  Copyright © 2020 weclouds. All rights reserved.
//

import UIKit

protocol IHButtonViewDelegate : NSObjectProtocol{
    func numberofItem(in buttonView : IHButtonView)->Int
    func buttonView(_ buttonView: IHButtonView,titleFor item:Int) ->String
    func buttonView(_ buttonView: IHButtonView,didSelected item:Int)
}
class IHButtonView: UIView {
    weak var delegate : IHButtonViewDelegate?
    var buttonArr :[UIButton]? = [UIButton]()
    
    override init(frame: CGRect) {
        super.init(frame: frame)
    }
    
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    func reloadData()  {
        self.removeSubviews()
        createButtons()
    }
    //创建按钮
    func createButtons()  {
        let bgViewWidth :CGFloat = KSCREENWIDTH - 40 - 20
        let space :CGFloat = 17
        var buttonX :CGFloat = 10
        var buttonY : CGFloat = 10
      //  let buttonW :CGFloat = (bgViewWidth - 3 * space) / 4
        let buttonH :CGFloat =  30
        let count = delegate?.numberofItem(in: self )

        for i in 0..<count! {
            let title = delegate?.buttonView(self, titleFor: i)
          //  let col : Int = i % 4 //列
           // let row : Int  = i / 4 // 行

            let str_width =  title!.ga_widthForComment(font: UIFont(name: PingFangSC_Regular, size: 13)!, height: 30)
            let btnW = str_width + 20
            
            if buttonX + btnW  > bgViewWidth{
                   buttonX = 20
                   buttonY += 40
               }
             let btn = UIButton(type: .custom)
             btn.frame = CGRect(x: buttonX, y: buttonY, width: btnW, height: buttonH)
            btn.setTitle(title, for: .normal)
            btn.backgroundColor = UIColor(hexString: "#FFFFFF")
            btn.setTitleColor(UIColor(hexString: "#333333"), for: .normal)
            btn.setTitleColor(UIColor(hexString: "#FFFFFF"), for: .selected)
            btn.titleLabel?.font = UIFont(name: PingFangSC_Regular, size: 13)
            btn.addTarget(self, action: #selector(buttonClick), for: .touchUpInside)
            
            btn.tag = 1023243 + i
            btn.layer.masksToBounds = true
            btn.layer.cornerRadius = 4  
            if i == 0 {
                btn.isSelected = true
                btn.backgroundColor = UIColor(hexString: "#573F95")
            }
            self.addSubview(btn)
            self.buttonArr?.append(btn)
            buttonX += (btnW + 10)
        }
    }
    @objc func  buttonClick(_ sender:UIButton)  {
        for btn  in buttonArr! {
            btn.isSelected = false
            btn.backgroundColor = UIColor(hexString: "#FFFFFF")
        }
        sender.isSelected = true
        sender.backgroundColor = UIColor(hexString: "#573F95")
        if let delegate = self.delegate {
            delegate.buttonView(self, didSelected: sender.tag - 1023243)
        }
    }
    
    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
        super.touchesBegan(touches, with: event)
        log.debug("点击了  - buttonView")
    }

}