SwiftUI：数组内的修饰符

Question

我目前正在尝试将所有可能的修饰符直接放入数组中，然后通过 forEach 调用它们。它也适用于它们中的大多数，不幸的是框架（高度、宽度、对齐方式）不是我想要的。文本和框架应同时对齐。但无论我如何尝试，它都不起作用。此外，我也未能通过这种方式整合 .bold 和 .italic。我知道还有其他方法。如果可能的话，我希望能够以这种方式包含所有修饰符。这可能吗？

import SwiftUI

struct Tests: Identifiable {
    var id: Int
    var text: String
    var textcolor: Color
    var textfont: Font
    var height: CGFloat
    var width: CGFloat
    var alignment: Alignment
    var textbackcolor: Color
    var corner: CGFloat
    var show: Bool
    var user: String
}

struct ContentView: View {

    @State private var testvar = [
        Tests(id: 000, text: "Hello World 1", textcolor: .red, textfont: .title, height: 100, width: 300, alignment: .trailing, textbackcolor: .blue, corner: 20, show: true, user: "System"),
        Tests(id: 001, text: "Hello World 2", textcolor: .green,  textfont: .largeTitle, height: 100, width: 300, alignment: .center, textbackcolor: .black, corner: 50, show: true, user: "George"),
       ]

    var body: some View {
        NavigationView {
            VStack {

                    ForEach(self.testvar) { txt in if txt.show == true {
                        Text("\(txt.text)")
                            .frame(width: txt.width, height: txt.height, alignment: txt.alignment)
                            .font(txt.textfont)
                            .foregroundColor(txt.textcolor)
                            .background(txt.textbackcolor)
                            .cornerRadius(txt.corner)
                        //.bold?
                        //.italic?
                        } }
               }
        }
    }
}


struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}

Answer 1

更改修饰符的顺序（斜体或粗体必须仅应用于文本）

ForEach(self.testvar) { txt in if txt.show == true {
    Text("\(txt.text)")
        .bold()
        .italic()
        .frame(width: txt.width, height: txt.height, alignment: txt.alignment)
        .font(txt.textfont)
        .foregroundColor(txt.textcolor)
        .background(txt.textbackcolor)
        .cornerRadius(txt.corner)
    }
}

关于数据

@State private var testvar = [
        Tests(id: 000, text: "Hello World 1", textcolor: .red, textfont: .title, height: 100, width: 300, alignment: .trailing, textbackcolor: Color(.blue).opacity(0.2), corner: 20, show: true, user: "System"),
        Tests(id: 001, text: "Hello World 2", textcolor: .green,  textfont: .largeTitle, height: 300, width: 300, alignment: .center, textbackcolor: .black, corner: 50, show: true, user: "George"),
       ]

我有

如果您想知道为什么 .largeTitle 不是斜体，请参阅 How to apply .italic() to .largeTitle Font?

更新以反映讨论

为了能够根据数组中的值修改样式，请使用简单的文本扩展

extension Text {
    func style(bold: Bool = false, italic: Bool = false) -> Self {
        var s = self
        if bold {
            s = s.bold()
        }
        if italic {
            s = s.italic()
        }
        return s
    }
}

这是（我希望如此）不言自明

SwiftUI：数组内的修饰符

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