PDF_Office/PDF Office/PDF Master/Class/PDFTools/Print/Presenter/KMPrintPresenter_C.swift

//
//  KMPrintPresenter_C.swift
//  PDF Reader Pro
//
//  Created by lizhe on 2022/12/21.
//
//
import Cocoa

class KMPrintPresenter_C: NSObject {
    lazy var printData: KMPrintModel! = KMPrintModel()
    var document: CPDFDocument?
    fileprivate weak var delegate: KMPrintPresenter_CDeleage?

    /**
     初始化presenter
     */
    func initPresenter(delegate: KMPrintPresenter_CDeleage, data: KMPrintModel, document: CPDFDocument) {
        self.delegate = delegate
        self.printData = data
        self.updatePrintDocument(documentURL: document.documentURL, data: self.printData)
    }

    func reloadData() {
        self.updatePrintDocument(documentURL: self.document!.documentURL, data: self.printData)
    }

    /**
     @abstract 解除绑定
     */
    func free() {
        delegate = nil
    }
}

protocol KMPrintPresenter_CDeleage: NSObject {
    func showData(presenter: KMPrintPresenter_C, document: CPDFDocument)
}

protocol KMPrintPresenter_CDocument: NSObject {}
extension KMPrintPresenter_C: KMPrintPresenter_CDocument {
    /**
     @abstract 获取打印document
     @param url  源文件url
     @param data 数据
     @retrun document
     */
    func updatePrintDocument(documentURL: URL, data: KMPrintModel) -> CPDFDocument {
        /**
         获取基本参数
         */
        let printModel: KMPrintModel = data
        /**
         绘制document
         */
        //创建预览document
        let previewDocument = self.creatDocument(url: documentURL)
        //获取总page
        let pages = self.fetchPages(documentURL: documentURL, range: printModel.page.range)
        //插入page
        let insertSuccess = self.insertPages(document: previewDocument, printModel: printModel, pages: pages)
        if insertSuccess {
            KMPrint("插入成功")
        } else {
            KMPrint("插入失败")
        }

        //重置document
        let filePath = self.saveDocument(document: previewDocument)

        if self.delegate != nil {
            self.delegate?.showData(presenter: self, document: previewDocument)
        }
        KMPrint("保存地址" + filePath)
        return previewDocument
    }
    /**
     @abstract 插入page
     @param paperSet  纸张设置
     @param pageSet page设置
     @param pages page数组
     */
    func insertPages(document: CPDFDocument,
                     printModel: KMPrintModel,
                     pages: [CPDFPage]) -> Bool {
        //每张纸包含的apge数量
        var pageOfPaperCount: Int = 1
        switch printModel.page.operation.type {
            case .multipage:
            pageOfPaperCount = Int(printModel.page.operation.pageOfPaper.point.x * printModel.page.operation.pageOfPaper.point.y)
            case .poster:
                pageOfPaperCount = Int(printModel.page.operation.pageOfPaper.point.x * printModel.page.operation.pageOfPaper.point.y)
            default:
            pageOfPaperCount = 1
        }
        //总页数
        let count: Int = Int(ceil(Double(pages.count / pageOfPaperCount)))
        let size = printModel.page.operation.size



        var insertPages: [CPDFPage] = []
        for i in 0...count {
            //获取多页page
            var drawPages: [CPDFPage] = []
            for j in 0...pageOfPaperCount {
                if i * pageOfPaperCount + j < pages.count {
                    let drawPage = pages[i * pageOfPaperCount + j]
                    drawPages.append(drawPage)
                }
            }
            //TODO: 暂时屏蔽
            let insertPage = KMPrintPage_C.init()
            insertPage.pages = drawPages
            insertPage.data = printModel
            insertPage.setBounds(CGRect(x: 0, y: 0, width: printModel.paper.info.size.width, height: printModel.paper.info.size.height), for: CPDFDisplayBox.mediaBox)
            insertPage.drawBlock = { [weak self] box, context, pages, data in
                //绘制page
                self?.drawPageToContext(context: context, pages: pages, data: data)
            }
            insertPages.append(insertPage)
        }

        var result = true
        if insertPages.count != 0 {
            for index in 0...insertPages.count - 1 {
                let page = insertPages[index]

                var success = false
                if (printModel.page.range.reversePrintOrder) {
                    success = document.insertPageObject(page, at: 0)
                } else {
                    success = document.insertPageObject(page, at: UInt(index))
                }
                if success {
                    KMPrint("插入成功")
                } else {
                    KMPrint("插入失败")
                    result = false
                }
            }
        }


//        var result = true
//        if pages.count != 0 {
//            for index in 0...pages.count - 1 {
//                let page = pages[index]
//                let success = document.insertPageObject(page, at: UInt(index))
//                if success {
//                    print("插入成功")
//                } else {
//                    print("插入失败")
//                    result = false
//                }
//            }
//        }
        return result
    }

    func creatDocument(url: URL) -> CPDFDocument {
        if FileManager.default.fileExists(atPath: NSTemporaryDirectory() + "/PDFReaderProTest") {
            try?FileManager.default.createDirectory(atPath: NSTemporaryDirectory() + "/PDFReaderProTest", withIntermediateDirectories: true)
        }

        let document = CPDFDocument(url: url)!
//        document.importPages(IndexSet(integer: 0), from: document, at: 0)
        let count = document.pageCount
        for _ in 0...count {
            document.removePage(at: 0)
        }
        return document
    }

    func saveDocument(document: CPDFDocument) -> String {
        let filePath = NSTemporaryDirectory() + "/PDFReaderProTest/test2.pdf"
        if FileManager.default.fileExists(atPath: filePath) {
            try?FileManager.default.removeItem(atPath: filePath)
        }

        let url: URL = NSURL(string: filePath)! as URL
        var success = document.write(to: url)
        if !success {
            success = NSData(data: document.dataRepresentation()).write(to: url, atomically: true)
        }
        if success {
            KMPrint("保存成功" + filePath)
        } else {
            KMPrint("保存失败")
        }

        return filePath
    }

    /**
     获取pages
     @param type 页面类型
     @param selectPages 当type 为custom时  传入选中page的下标
     */
    func fetchPages(documentURL: URL, range: KMPrintPageRange) -> [CPDFPage] {
        let document = CPDFDocument.init(url: documentURL)!
        if document.pageCount < 1 {
            guard let page: CPDFPage = document.page(at: 0) else {
                return []
            }
            return [page]
        } else {
            var pagesArray: [CPDFPage] = []

            switch range.type {
            case .allPage:
                for index in 0...document.pageCount - 1 {
                    let page: CPDFPage = document.page(at: index)!
                    pagesArray.append(page)
                }

            case .evenPage:
                for index in 0...document.pageCount - 1 {
                    if index % 2 == 0 {
                        let page: CPDFPage = document.page(at: index)!
                        pagesArray.append(page)
                    }
                }

            case .oddPage:
                for index in 0...document.pageCount - 1 {
                    if index % 2 != 0 {
                        let page: CPDFPage = document.page(at: index)!
                        pagesArray.append(page)
                    }
                }

//            case .currentPage:
//                let page = self.pdfView.currentPage()
//                if page != nil {
//                    pagesArray.append(page!)
//                } else {
//                    print("page不存在")
//                }
            case .custom:
                for index in range.selectPages {
                    guard let page: CPDFPage = document.page(at: UInt(index - 1)) else {
                        continue
                    }
                    pagesArray.append(page)
                }

            default:
                KMPrint("无匹配选项")
            }
            return pagesArray
        }
    }

    /**
     @abstract 获取context
     @param size纸张大小
     */
    func createContext(size: CGSize) -> CGContext {
        let s = CGSize(width: nearbyint(size.width), height: nearbyint(size.height))
        let rep = NSBitmapImageRep.init(bitmapDataPlanes: nil,
                                        pixelsWide: Int(s.width),
                                        pixelsHigh: Int(s.height),
                                        bitsPerSample: 8,
                                        samplesPerPixel: 4,
                                        hasAlpha: true,
                                        isPlanar: false,
                                        colorSpaceName: NSColorSpaceName.calibratedRGB,
                                        bytesPerRow: 0,
                                        bitsPerPixel: 0)!
        let context: CGContext = NSGraphicsContext.init(bitmapImageRep: rep)!.cgContext
        return context
    }

    /**
     @abstract 绘制page
     @param context
     @pages page数组 [CPDFPage]
     */
    func drawPageToContext(context: CGContext, pages: [CPDFPage], data: KMPrintModel) {
        /**
         paper
         */
        let paperDirection: KMPrintPaperDirectionType = .vertical //打印方向
        let paperSize: CGSize = CGSize(width: 595, height: 842) //页面paper大小
        var dealPaperSize: CGSize = paperSize //页面paper大小
        let paperInset: NSEdgeInsets = NSEdgeInsets(top: 0, left: 0, bottom: 0, right: 0) //绘制paper大小
        var columnCount: Int = 2 //行
        var rowCount: Int = 2 //列
        let columnSpace: CGFloat = 2.0 //行间距
        let rowSpace: CGFloat = 2.0 //列间距
        let border: Bool = true
        /**
         page
         */
        let pageOrder: KMPrintPageOperation.Multipage.Order = .horizontal //页面顺序
        var pageSize: CGSize = CGSize(width: 100, height: 100) //page大小
        let contentType: KMPrintContentType = .document
        var scale: Float = 1.0 //缩放尺寸
        let autoRotate: Bool = false

        /**
         计算
         */
        if paperDirection == .horizontal {
            dealPaperSize = CGSize(width: dealPaperSize.height, height: dealPaperSize.width)
        }
        //减去inset
        dealPaperSize = CGSize(width: dealPaperSize.width - paperInset.left - paperInset.right,
                               height: dealPaperSize.height - paperInset.bottom - paperInset.top)
        //计算page尺寸(减去page之间的间隙)
        pageSize = CGSize(width: (dealPaperSize.width - CGFloat((columnCount - 1)) * CGFloat(columnSpace)) / CGFloat(columnCount),
                          height: (dealPaperSize.height - CGFloat((rowCount - 1)) * CGFloat(rowSpace)) / CGFloat(rowCount))
        //如果是横向参数需切换
        if pageOrder == .horizontal ||
            pageOrder == .horizontalReverseSequence {
            let temp = columnCount
            columnCount = rowCount
            rowCount = temp
        }

        for i in 0...columnCount {
            for j in 0...rowCount {
                let index = j + i * columnCount
                if index < pages.count {
                    //参数
                    let page = pages[index]
                    let rect = page.bounds(for: CPDFDisplayBox.cropBox)
                    let originSize = rect.size
                    var dealSize = originSize
                    var rotate = page.rotation
                    var annoations: [CPDFAnnotation] = page.annotations

                    //处理
                    switch contentType {
                    case .document:
                        annoations.removeAll()
                    case .documentAndStamp:
                        for annoation in annoations {
                            if !(annoation.isKind(of: CPDFStampAnnotation.self)) {
                                annoation.page.removeAnnotation(annoation)
                            }
                        }
                    case .documentAndMarkup:
                        for annoation in annoations {
                            if !(annoation.isKind(of: CPDFMarkupAnnotation.self)) {
                                annoation.page.removeAnnotation(annoation)
                            }
                        }
                    default: break

                    }

                    if rotate == 90 ||
                        rotate == 270 {
                        dealSize = CGSize(width: originSize.height, height: originSize.width)
                    }

                    //取出page横竖时能显示的最大Rect
                    if autoRotate {
                        //page旋转度数为0度或者180度时，在指定的大小内，能显示的比例
                        let scale1 = Float(min(pageSize.width / originSize.width, pageSize.height / originSize.height))
                        //page旋转度数为90度或者270度时，在指定的大小内，能显示的比例
                        let scale2 = Float(min(pageSize.width / originSize.height, pageSize.height / originSize.width))
                        scale = max(scale1, scale2)

                        if scale1 > scale2 {
                            //高为竖直排列时，显示最大，则需将page时90度或者270度需要进行旋转
                            if rotate == 90 ||
                                rotate == 270 {
                                rotate = rotate - 90
                            }
                        } else {
                            //宽为竖直排列时，显示最大，则需将page时0度或者180度需要进行旋转
                            if rotate == 0 ||
                                rotate == 180 {
                                rotate = rotate - 90
                            }
                        }

                        if rotate == 90 ||
                            rotate == 270 {
                            dealSize = CGSize(width: originSize.height, height: originSize.width)
                        } else {
                            dealSize = CGSize(width: originSize.width, height: originSize.height)
                        }

                    } else {
                        scale = Float(min(pageSize.width / dealSize.width, pageSize.height / dealSize.height))
                    }
                    scale = min(scale, 1)

                    //居中
                    let spaceX: CGFloat = (pageSize.width - dealSize.width * CGFloat(scale)) / 2
                    let spaceY: CGFloat = (pageSize.height - dealSize.height * CGFloat(scale))/2
                    var translateX: CGFloat = 0.0
                    var translateY: CGFloat = 0.0

                    switch pageOrder {
                    case .horizontal:
                        translateX = (pageSize.width + columnSpace) + CGFloat(j) + paperInset.left + spaceX
                        //页面内容高度 + 下边的行间距 - 第几个cell的高度 +居中
                        translateY = dealPaperSize.height + paperInset.bottom - (pageSize.height + rowSpace) * (CGFloat(i) + 1) + spaceY  + rowSpace
                    case .horizontalReverseSequence:
                        translateX = dealPaperSize.width + paperInset.left - (pageSize.width + columnSpace) * (CGFloat(j) + 1) + spaceX + columnSpace
                        translateY = dealPaperSize.height - (pageSize.height + rowSpace) * (CGFloat(i) + 1) + spaceY + paperInset.bottom + rowSpace
                    case .vertical:
                        translateX = (pageSize.width + columnSpace)  * CGFloat(i) + paperInset.left + spaceX
                        translateY = dealPaperSize.height - (pageSize.height + rowSpace) * (CGFloat(j) + 1) + spaceY + paperInset.bottom + rowSpace
                    case .verticalReverseSequence:
                        translateX = dealPaperSize.width + paperInset.left - (pageSize.width + columnSpace) * (CGFloat(i) + 1) + spaceX + columnSpace
                        translateY = dealPaperSize.height - (pageSize.height + rowSpace) * (CGFloat(j) + 1) + spaceY + paperInset.bottom + rowSpace
                    }

                    context.saveGState()
                    //平移
                    context.translateBy(x: translateX, y: translateY)
                    //缩放
                    context.scaleBy(x: CGFloat(scale), y: CGFloat(scale))

                    page.draw(with: CPDFDisplayBox.cropBox, to: context)
                    page.transform(context, for: CPDFDisplayBox.cropBox)

                    if border {
                        var dirtyRect = rect
                        if rotate == 90 ||
                            rotate == 270 {
                            dirtyRect = NSMakeRect(dirtyRect.origin.x, dirtyRect.origin.y, dirtyRect.size.height, dirtyRect.size.width)
                        }

                        context.addRect(dirtyRect)
                        context.setStrokeColor(red: 0.0, green: 0.0, blue: 0.0, alpha: 1.0)
                        context.strokePath()
                    }
                    context.restoreGState()
                }
            }
        }

    }
}

protocol KMPrintPresenter_CProtocol: NSObject {

}