789d581705
- Connect SettingsView font selection to WebView CSS rendering - Add dynamic font size and family mapping in WebView - Implement CSS custom properties for responsive font scaling - Add font family fallback stacks for cross-platform compatibility - Update WebView to use Settings object for typography configuration
287 lines
11 KiB
Swift
287 lines
11 KiB
Swift
import SwiftUI
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import WebKit
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struct WebView: UIViewRepresentable {
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let htmlContent: String
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let settings: Settings
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let onHeightChange: (CGFloat) -> Void
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@Environment(\.colorScheme) private var colorScheme
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func makeUIView(context: Context) -> WKWebView {
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let webView = WKWebView()
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webView.navigationDelegate = context.coordinator
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webView.scrollView.isScrollEnabled = false
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webView.isOpaque = false
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webView.backgroundColor = UIColor.clear
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// Message Handler hier einmalig hinzufügen
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webView.configuration.userContentController.add(context.coordinator, name: "heightUpdate")
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context.coordinator.onHeightChange = onHeightChange
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return webView
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}
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func updateUIView(_ webView: WKWebView, context: Context) {
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// Nur den HTML-Inhalt laden, keine Handler-Konfiguration
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context.coordinator.onHeightChange = onHeightChange
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let isDarkMode = colorScheme == .dark
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// Font Settings aus Settings-Objekt
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let fontSize = getFontSize(from: settings.fontSize ?? .extraLarge)
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let fontFamily = getFontFamily(from: settings.fontFamily ?? .serif)
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let styledHTML = """
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<html>
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<head>
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<meta name="color-scheme" content="\(isDarkMode ? "dark" : "light")">
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<style>
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:root {
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--background-color: \(isDarkMode ? "#000000" : "#ffffff");
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--text-color: \(isDarkMode ? "#ffffff" : "#1a1a1a");
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--heading-color: \(isDarkMode ? "#ffffff" : "#000000");
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--link-color: \(isDarkMode ? "#0A84FF" : "#007AFF");
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--quote-color: \(isDarkMode ? "#8E8E93" : "#666666");
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--quote-border: \(isDarkMode ? "#0A84FF" : "#007AFF");
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--code-background: \(isDarkMode ? "#1C1C1E" : "#f5f5f5");
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--code-text: \(isDarkMode ? "#ffffff" : "#000000");
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--separator-color: \(isDarkMode ? "#38383A" : "#e0e0e0");
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/* Font Settings from Settings */
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--base-font-size: \(fontSize)px;
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--font-family: \(fontFamily);
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}
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body {
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font-family: var(--font-family);
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line-height: 1.8;
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margin: 0;
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padding: 16px;
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background-color: var(--background-color);
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color: var(--text-color);
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font-size: var(--base-font-size);
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-webkit-text-size-adjust: 100%;
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}
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h1, h2, h3, h4, h5, h6 {
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color: var(--heading-color);
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margin-top: 24px;
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margin-bottom: 12px;
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font-weight: 600;
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font-family: var(--font-family);
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}
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h1 { font-size: calc(var(--base-font-size) * 1.5); }
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h2 { font-size: calc(var(--base-font-size) * 1.25); }
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h3 { font-size: calc(var(--base-font-size) * 1.125); }
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h4 { font-size: var(--base-font-size); }
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h5 { font-size: calc(var(--base-font-size) * 0.875); }
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h6 { font-size: calc(var(--base-font-size) * 0.75); }
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p {
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margin-bottom: 16px;
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font-family: var(--font-family);
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font-size: var(--base-font-size);
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}
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img {
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max-width: 100%;
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height: auto;
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border-radius: 8px;
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margin: 16px 0;
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}
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a {
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color: var(--link-color);
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text-decoration: none;
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font-family: var(--font-family);
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}
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a:hover {
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text-decoration: underline;
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}
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blockquote {
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border-left: 4px solid var(--quote-border);
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margin: 16px 0;
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padding-left: 16px;
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font-style: italic;
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color: var(--quote-color);
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background-color: \(isDarkMode ? "rgba(58, 58, 60, 0.3)" : "rgba(0, 122, 255, 0.05)");
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border-radius: 4px;
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padding: 12px 16px;
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font-family: var(--font-family);
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font-size: var(--base-font-size);
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}
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code {
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background-color: var(--code-background);
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color: var(--code-text);
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padding: 2px 6px;
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border-radius: 4px;
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font-family: \(settings.fontFamily == .monospace ? "var(--font-family)" : "'SF Mono', Menlo, Monaco, Consolas, monospace");
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font-size: calc(var(--base-font-size) * 0.875);
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}
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pre {
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background-color: var(--code-background);
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color: var(--code-text);
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padding: 16px;
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border-radius: 8px;
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overflow-x: auto;
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font-family: \(settings.fontFamily == .monospace ? "var(--font-family)" : "'SF Mono', Menlo, Monaco, Consolas, monospace");
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font-size: calc(var(--base-font-size) * 0.875);
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border: 1px solid var(--separator-color);
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}
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pre code {
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background-color: transparent;
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padding: 0;
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font-family: inherit;
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}
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hr {
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border: none;
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height: 1px;
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background-color: var(--separator-color);
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margin: 24px 0;
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}
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table {
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width: 100%;
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border-collapse: collapse;
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margin: 16px 0;
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font-family: var(--font-family);
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font-size: var(--base-font-size);
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}
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th, td {
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border: 1px solid var(--separator-color);
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padding: 8px 12px;
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text-align: left;
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}
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th {
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background-color: \(isDarkMode ? "rgba(58, 58, 60, 0.5)" : "rgba(0, 0, 0, 0.05)");
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font-weight: 600;
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}
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ul, ol {
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padding-left: 20px;
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margin-bottom: 16px;
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font-family: var(--font-family);
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font-size: var(--base-font-size);
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}
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li {
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margin-bottom: 4px;
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}
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/* Dark mode media query als Fallback */
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@media (prefers-color-scheme: dark) {
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:root {
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--background-color: #000000;
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--text-color: #ffffff;
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--heading-color: #ffffff;
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--link-color: #0A84FF;
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--quote-color: #8E8E93;
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--quote-border: #0A84FF;
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--code-background: #1C1C1E;
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--code-text: #ffffff;
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--separator-color: #38383A;
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}
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}
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/* Light mode media query als Fallback */
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@media (prefers-color-scheme: light) {
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:root {
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--background-color: #ffffff;
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--text-color: #1a1a1a;
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--heading-color: #000000;
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--link-color: #007AFF;
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--quote-color: #666666;
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--quote-border: #007AFF;
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--code-background: #f5f5f5;
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--code-text: #000000;
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--separator-color: #e0e0e0;
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}
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}
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</style>
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</head>
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<body>
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\(htmlContent)
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<script>
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function updateHeight() {
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const height = document.body.scrollHeight;
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window.webkit.messageHandlers.heightUpdate.postMessage(height);
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}
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window.addEventListener('load', updateHeight);
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setTimeout(updateHeight, 100);
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setTimeout(updateHeight, 500);
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setTimeout(updateHeight, 1000);
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// Höhe bei Bild-Ladevorgängen aktualisieren
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document.querySelectorAll('img').forEach(img => {
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img.addEventListener('load', updateHeight);
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});
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</script>
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</body>
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</html>
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"""
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webView.loadHTMLString(styledHTML, baseURL: nil)
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}
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func makeCoordinator() -> WebViewCoordinator {
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WebViewCoordinator()
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}
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private func getFontSize(from fontSize: FontSize) -> Int {
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switch fontSize {
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case .small: return 14
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case .medium: return 16
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case .large: return 18
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case .extraLarge: return 20
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}
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}
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private func getFontFamily(from fontFamily: FontFamily) -> String {
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switch fontFamily {
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case .system:
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return "-apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif"
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case .serif:
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return "'Times New Roman', Times, 'Liberation Serif', serif"
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case .sansSerif:
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return "'Helvetica Neue', Helvetica, Arial, sans-serif"
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case .monospace:
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return "'SF Mono', Menlo, Monaco, Consolas, 'Liberation Mono', monospace"
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}
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}
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}
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class WebViewCoordinator: NSObject, WKNavigationDelegate, WKScriptMessageHandler {
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var onHeightChange: ((CGFloat) -> Void)?
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func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {
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if navigationAction.navigationType == .linkActivated {
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if let url = navigationAction.request.url {
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UIApplication.shared.open(url)
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decisionHandler(.cancel)
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return
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}
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}
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decisionHandler(.allow)
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}
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func userContentController(_ userContentController: WKUserContentController, didReceive message: WKScriptMessage) {
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if message.name == "heightUpdate", let height = message.body as? CGFloat {
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DispatchQueue.main.async {
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self.onHeightChange?(height)
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}
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}
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}
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deinit {
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// Der Message Handler wird automatisch mit der WebView entfernt
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}
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}
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