📦Text

SwiftUI ⟩ Controls ⟩ Text

⭐ 基本語法

// ⭐️ "string" 並非單純字串，它其實當作 "localization key"
Text("string")  

// ⭐️ 設定小數位數
Text("\(scale, specifier: "%.2f")" )  

💾 程式

等寬字體

// ⭐️ 設定小數位數(Slider 常用)
//                           小數位數 ↴
Text("scale：\(scale, specifier: "%0.2f")")       // 兩位小數
    .font(.system(.body, design: .monospaced))    // ⭐️ 使用等寬字體

多行對齊

// ⭐️ 多行對齊
Text("first line\nsecond line\nthird line")
    .multilineTextAlignment(.center)    // ⭐️ 還有 .leading, .trailing

import SwiftUI

struct ContentView: View {
    var body: some View {
        VStack(alignment: .leading, spacing: 20) {
            texts
            Color.secondary.frame(height: 0.5)
            textWithBG
        }
        .padding(40)
    }
}

extension ContentView {
    
    /// ⭐ text with background is NO MORE a `Text`❗❗❗
    var textWithBG: some View {
        HStack {
            Text("⚠️")
            Text(" .background ").background(Color.pink)
            Text(" is ")
                + Text("NO MORE").bold().foregroundColor(.pink)
                + Text(" a `Text`❗")
        }
    }
    
    /// texts in different styles
    var texts: some View {
        [
            Text(".bold").bold(),
            Text(".italic").italic(),
            Text(".foregroundColor").foregroundColor(.green),
            
            Text(".font(.title)").font(.title),
            Text("\n.fontWeight(.heavy)").fontWeight(.heavy),
            Text(".font(.system(size:40))").font(.system(size: 40)),
            
            Text("\n.strikethrough").strikethrough(),
            Text(".strikethrough(true, color: .red)").strikethrough(true, color: .red),
            Text("\n.underline").underline(),
            Text(".underline(true, color: .blue)").underline(true, color: .blue),
            
            Text(".baseline")
            + Text("Offset(10)").baselineOffset(10).font(.caption),
            
            Text("\n.kerning .kerning .kerning").kerning(8),
            Text("\n.tracking (letter-spacing)").tracking(8),
            
            Text("\n⭐️ inline system image: Five ")
                + Text(Image(systemName: "star.circle.fill")).foregroundColor(.yellow)    
                + Text(" Stars"),
            
            Text("\n⭐️ markdown: Go for [apple.com](https://apple.com)"),
        ]
        .reduce(into: Text("normal")) { result, text in
            result = result + Text(" ") + text
        }
        .lineSpacing(10)
        .foregroundColor(.secondary)
    }
}

🔴 主題

• number of lines

• adjusting text

👥 相關

• Slider

• can be aligned by using .frame(). 👉 See: Sarun
• a View for String.

• can be styled using AttributedString.

• supports Markdown.

• can be rendered with Gradient+.

• can change Font.

📘 手冊

• SwiftUI ⟩ Text Input and Output ⟩

  • Text ⟩

    • Text(_ attributedContent: AttributedString)
    • .bold()
    • Text + Text
  • Font ⟩

    • system(_:design:weight:)：specifies style, design, and weight.
    • system(size:weight:design:)：specifies a system font.
• Foundation ⟩ Strings and Text ⟩ AttributedString (struct)

⭐️ 重點

Text uses only a subset of the attributes defined in AttributeScopes.FoundationAttributes.

• Text renders all InlinePresentationIntent attributes except for lineBreak and softBreak.
• It also renders the link attribute as a clickable link.
• Textignores any other Foundation-defined attributes in an attributed string.

🖥️ 影片

tundsdev ⟩ Adding Text & TextStyles in SwiftUI

📗 參考

• Sarun ⟩

  • How to align text center/leading/trailing in SwiftUI
  • How to style SwiftUI text Font
• Five Stars ⟩ SwiftUI patterns: passing & accepting views - inline image
• AppCoda ⟩ Learn SwiftUI ⟩ Working with Text ⭐️
• Paul ⟩ How to combine text views together - Text + Text.
• Swift Wombat ⟩ How to style Text view in SwiftUI ⭐️

❓

問：如何幫文字設定各種格式❓如何排版文字❓