swift - 使用 Swift 的 PDFKit 中的灵活部分

Question

我正在开发一个创建发票的应用程序，并且我试图让我的行部分在高度和宽度的情况下变得灵活，这样我就可以让用户在发票中输入更多行。我的代码和图片以获得更好的想象力如下。

谢谢你们，我坚持了好几天，可能很明显问题：我

我正在使用 X 代码 12.5.1

我的 PDF 课

class PdfCreator : NSObject {
@ObservedObject var userSettings = UserSettings()
private var pageRect : CGRect
private var renderer : UIGraphicsPDFRenderer?


/**
 W: 8.5 inches * 72 DPI = 612 points
 H: 11 inches * 72 DPI = 792 points
 A4 = [W x H] 595 x 842 points
 */
init(pageRect : CGRect =
        CGRect(x: 0, y: 0, width: (8.5 * 72.0), height: (11 * 72.0))) {
    
    let format = UIGraphicsPDFRendererFormat()
    let metaData = [kCGPDFContextTitle: "Rechnung ()",
                    kCGPDFContextAuthor: "Vamonos"]
    
    format.documentInfo = metaData as [String: Any]
    self.pageRect = pageRect
    self.renderer = UIGraphicsPDFRenderer(bounds: self.pageRect,
                                          format: format)
    
    super.init()
    }
}     

这些也是我在下图中标记的行。我希望这个人有自己的高度灵活的部分，以便用户可以在下面添加另一行。

extension PdfCreator {
private func row( quantity : String) {
    let attributes: [NSAttributedString.Key : Any] = [
        .font: UIFont.boldSystemFont(ofSize: 12)
    ]
    
    let rows = CGRect(x: 40 , y: 370,
                      width: pageRect.width, height: 40)
    quantity.draw(in: rows, withAttributes: attributes)
}

private func row2( quantity : String) {
    let attributes: [NSAttributedString.Key : Any] = [
        .font: UIFont.boldSystemFont(ofSize: 12)
    ]
    
    let rows = CGRect(x: 100 , y: 370,
                      width: pageRect.width, height: 40)
    quantity.draw(in: rows, withAttributes: attributes)
}

private func row3( quantity : String) {
    let attributes: [NSAttributedString.Key : Any] = [
        .font: UIFont.boldSystemFont(ofSize: 12)
    ]
    
    let rows = CGRect(x: 300 , y: 370,
                      width: pageRect.width, height: 40)
    quantity.draw(in: rows, withAttributes: attributes)
}

private func row4( quantity : String) {
    let attributes: [NSAttributedString.Key : Any] = [
        .font: UIFont.boldSystemFont(ofSize: 12)
    ]
    
    let rows = CGRect(x: 360 , y: 370,
                      width: pageRect.width, height: 40)
    quantity.draw(in: rows, withAttributes: attributes)
}

private func row5( quantity : String) {
    let attributes: [NSAttributedString.Key : Any] = [
        .font: UIFont.boldSystemFont(ofSize: 12)
    ]
    
    let rows = CGRect(x: 420 , y: 370,
                      width: pageRect.width, height: 40)
    quantity.draw(in: rows, withAttributes: attributes)
}

private func row6( quantity : String) {
    let attributes: [NSAttributedString.Key : Any] = [
        .font: UIFont.boldSystemFont(ofSize: 12)
    ]
    
    let rows = CGRect(x: 480 , y: 370,
                      width: pageRect.width, height: 40)
    quantity.draw(in: rows, withAttributes: attributes)
}

private func rowFilled( quantity : String) {
    let attributes: [NSAttributedString.Key : Any] = [
        .font: UIFont.boldSystemFont(ofSize: 12)
    ]
    
    let rows = CGRect(x: 40 , y: 385,
                      width: pageRect.width, height: 40)
    quantity.draw(in: rows, withAttributes: attributes)
}

private func rowFilled2( quantity : String) {
    let attributes: [NSAttributedString.Key : Any] = [
        .font: UIFont.boldSystemFont(ofSize: 12)
    ]
    
    let rows = CGRect(x: 100 , y: 385,
                      width: pageRect.width, height: 40)
    quantity.draw(in: rows, withAttributes: attributes)
}

private func rowFilled3( quantity : String) {
    let attributes: [NSAttributedString.Key : Any] = [
        .font: UIFont.boldSystemFont(ofSize: 12)
    ]
    
    let rows = CGRect(x: 300 , y: 385,
                      width: pageRect.width, height: 40)
    quantity.draw(in: rows, withAttributes: attributes)
}

private func rowFilled4( quantity : String) {
    let attributes: [NSAttributedString.Key : Any] = [
        .font: UIFont.boldSystemFont(ofSize: 12)
    ]
    
    let rows = CGRect(x: 360 , y: 385,
                      width: pageRect.width, height: 40)
    quantity.draw(in: rows, withAttributes: attributes)
}

private func rowFilled5( quantity : String) {
    let attributes: [NSAttributedString.Key : Any] = [
        .font: UIFont.boldSystemFont(ofSize: 12)
    ]
    
    let rows = CGRect(x: 420 , y: 385,
                      width: pageRect.width, height: 40)
    quantity.draw(in: rows, withAttributes: attributes)
}

private func rowFilled6( quantity : String) {
    let attributes: [NSAttributedString.Key : Any] = [
        .font: UIFont.boldSystemFont(ofSize: 12)
    ]
    
    let rows = CGRect(x: 480 , y: 385,
                      width: pageRect.width, height: 40)
    quantity.draw(in: rows, withAttributes: attributes)
    }
}

预览中的行