87 lines
3.2 KiB
Swift
87 lines
3.2 KiB
Swift
import SwiftUI
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struct RenderedNotesView: View {
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let text: String
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var body: some View {
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ScrollView {
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VStack(alignment: .leading, spacing: 8) {
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ForEach(text.split(separator: "\n"), id: \.self) { line in
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self.renderLine(String(line))
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}
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}
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.padding()
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}
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.frame(maxWidth: .infinity, maxHeight: .infinity)
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}
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@ViewBuilder
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private func renderLine(_ line: String) -> some View {
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let trimmed = line.trimmingCharacters(in: .whitespaces)
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if trimmed.isEmpty {
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EmptyView()
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} else if let level = headingLevel(for: trimmed) {
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let content = String(trimmed.dropFirst(level + 1)).trimmingCharacters(in: .whitespaces)
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Text(content)
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.font(.system(size: CGFloat(18 - level * 2), weight: .bold))
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.foregroundColor(.white)
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.frame(maxWidth: .infinity, alignment: .leading)
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} else if let (indentLevel, bullet, content) = listItemInfo(for: line) {
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HStack(alignment: .firstTextBaseline, spacing: 4) {
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Text(bullet)
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.foregroundColor(.gray)
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Text(content)
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.foregroundColor(.gray)
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}
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.padding(.leading, CGFloat(indentLevel * 15))
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} else {
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Text(trimmed)
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.foregroundColor(.primary)
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}
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}
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private func headingLevel(for line: String) -> Int? {
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guard line.hasPrefix("#") else { return nil }
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var count = 0
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for char in line {
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if char == "#" {
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count += 1
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} else if char == " " {
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return count
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} else {
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return nil
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}
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}
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return nil
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}
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private func listItemInfo(for line: String) -> (indentLevel: Int, bullet: String, content: String)? {
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let leadingSpaces = line.prefix(while: { $0 == " " }).count
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let indentLevel = leadingSpaces / 2
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let remaining = String(line.dropFirst(leadingSpaces))
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if remaining.hasPrefix("- ") {
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return (indentLevel, getBullet(for: indentLevel), String(remaining.dropFirst(2)).trimmingCharacters(in: .whitespaces))
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} else if remaining.hasPrefix("* ") {
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return (indentLevel, getBullet(for: indentLevel), String(remaining.dropFirst(2)).trimmingCharacters(in: .whitespaces))
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} else if let dotIndex = remaining.firstIndex(of: "."), let num = Int(remaining[remaining.startIndex..<dotIndex]), remaining[dotIndex..<remaining.endIndex].hasPrefix(". ") {
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let contentStart = remaining.index(dotIndex, offsetBy: 2)
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return (indentLevel, "\(num).", String(remaining[contentStart...]).trimmingCharacters(in: .whitespaces))
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}
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return nil
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}
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private func getBullet(for level: Int) -> String {
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switch level % 3 {
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case 0: return "•"
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case 1: return "◦"
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case 2: return "▪︎"
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default: return "-"
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}
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}
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}
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#Preview {
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RenderedNotesView(text: "# Heading 1\n## Heading 2\n- List item\n - Nested item\n - Deeper item\n1. Ordered\n 1. Nested ordered\nNormal text")
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} |