需要利用三方库：YMTreeMap

效果图如下：

Screenshot 2023-06-27 at 09.59.20.png

代码如下：

//MARK: 不规则试图布局
    func reloadDetailView(list:[FileInformation]) -> Void {
        
        let new_list  = list.sorted(by: {$0.size > $1.size})
        
        if detailbgView.subviews.count > 0 {
            for obj in detailbgView.subviews {
                obj.removeFromSuperview()
            }
        }
        
        var sizeArr = [Double]()
        var arrnum = 0
        if new_list.count > 0 {
            for model in new_list {
                if model.size != 0 && arrnum < 10 {
                    arrnum += 1
                    sizeArr.append(Double(model.size))
                }
            }
        }
        
        if sizeArr.count == 0 {
            //空目录
            detailbgView.isHidden = true
            NotFileBgView.isHidden = false
            return
        }
        
        detailbgView.isHidden = false
        NotFileBgView.isHidden = true
        
        //12个数做log运算
        sizeArr = changeNumToLog(list: sizeArr)
        
        let treeMapRect = NSRect.init(x: 0, y: 0, width: detailbgView.frame.width , height: detailbgView.frame.height)
        let values = sizeArr
        let tm = YMTreeMap.init(withValues: values)
        let treeMapRects = tm.tessellate(inRect: treeMapRect)
        
        //随机获取item背景渐变色
        let aGradient1 = NSGradient(colors: [NSColor(hex: "A18CD1"),NSColor(hex: "FBC2EB")])
        let aGradient2 = NSGradient(colors: [NSColor(hex: "16D9E3"),NSColor(hex: "30C7EC"),NSColor(hex: "46AEF7")])
        let aGradient3 = NSGradient(colors: [NSColor(hex: "FF9A9E"),NSColor(hex: "FAD0C4"),NSColor(hex: "FAD0C4")])
        let aGradient4 = NSGradient(colors: [NSColor(hex: "C471F5"),NSColor(hex: "FA71CD")])
        let aGradient5 = NSGradient(colors: [NSColor(hex: "FCCB90"),NSColor(hex: "D57EEB")])
        let aGradient6 = NSGradient(colors: [NSColor(hex: "37ECBA"),NSColor(hex: "72AFD3")])
        let aGradient7 = NSGradient(colors: [NSColor(hex: "F6D365"),NSColor(hex: "FDA085")])
        let aGradient8 = NSGradient(colors: [NSColor(hex: "A1C4FD"),NSColor(hex: "C2E9FB")])
        let aGradient9 = NSGradient(colors: [NSColor(hex: "E0C3FC"),NSColor(hex: "8EC5FC")])
        let aGradient10 = NSGradient(colors: [NSColor(hex: "5EE7DF"),NSColor(hex: "B490CA")])
        let aGradient11 = NSGradient(colors: [NSColor(hex: "9890E3"),NSColor(hex: "B1F4CF")])
        let aGradient12 = NSGradient(colors: [NSColor(hex: "37ECBA"),NSColor(hex: "72AFD3")])
        let aGradient13 = NSGradient(colors: [NSColor(hex: "EBBBA7"),NSColor(hex: "CFC7F8")])
        let colors = [aGradient1,aGradient2,aGradient3,aGradient4,aGradient5,aGradient6,aGradient7,aGradient8,aGradient9,aGradient10,aGradient11,aGradient12,aGradient13]
    
        var nums = 0
        for rectVal in treeMapRects {
            let rectVals = NSValue(rect: rectVal)
            let spaceViewRect1 = CGRectMake(rectVals.rectValue.origin.x+2, rectVals.rectValue.origin.y+2, rectVals.rectValue.size.width, rectVals.rectValue.size.height )
            let view = PMMDiskAnaysisSpaceView.init(frame: spaceViewRect1)
            let num = arc4random() % 13
            let configKey = colors[Int(num)]
            view.tag = nums
            view.gradient = configKey
            view.model = new_list[nums]
            view.delegate = self
            view.moveDelegate = self
            detailbgView.addSubview(view)
            nums += 1
        }
    }
    //MARK: log运算
    func changeNumToLog(list:[Double]) -> [Double] {
        
        var sizeArr = [Double]()
        for obj in list {
            let num = log(obj) * log(obj) * log(obj)  * log(obj)  * log(obj)  * log(obj)  * log(obj)  * log(obj)  * log(obj)  * log(obj)  * log(obj)  * log(obj)
            if sizeArr.count > 0 {
                guard let firstNum = sizeArr.first else { return [] }
                let ratio = Double(num)/(firstNum * 1.0)
                if ratio > 0.02 {
                    sizeArr.append(Double(num))
                }
            }else{
                sizeArr.append(Double(num))
            }
        }
        return sizeArr
    }