forked from eatvio/eatvio_app
feat: integrate MarkdownHtmlWidget for improved markdown rendering in blog and diet components
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124
lib/core/widgets/markdown_html_widget.dart
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124
lib/core/widgets/markdown_html_widget.dart
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import 'package:flutter/material.dart';
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import 'package:flutter_html/flutter_html.dart';
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import 'package:markdown/markdown.dart' as md;
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import 'package:url_launcher/url_launcher.dart';
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import 'package:eatvio_app/core/utils/markdown_utils.dart';
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/// Переиспользуемый виджет для отображения HTML из markdown текста
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class MarkdownHtmlWidget extends StatelessWidget {
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/// Markdown текст для отображения
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final String markdownText;
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/// Ширина изображений (по умолчанию ширина экрана минус 32)
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final double? imageWidth;
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/// Цвет текста для body и параграфов
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final Color? textColor;
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/// Размер шрифта (по умолчанию 16)
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final double? fontSize;
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/// Callback для обработки нажатий на ссылки
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final OnTap? onLinkTap;
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const MarkdownHtmlWidget({
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super.key,
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required this.markdownText,
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this.imageWidth,
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this.textColor,
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this.fontSize,
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this.onLinkTap,
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});
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@override
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Widget build(BuildContext context) {
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// Обрабатываем markdown текст
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final processedText = MarkdownUtils.processMarkdown(markdownText);
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// Конвертируем markdown в HTML
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final htmlData = md.markdownToHtml(
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processedText,
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extensionSet: md.ExtensionSet.gitHubFlavored,
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);
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final screenWidth = MediaQuery.of(context).size.width;
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final defaultImageWidth = imageWidth ?? (screenWidth - 32);
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final defaultTextColor = textColor ?? Colors.black87;
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final defaultFontSize = fontSize ?? 16.0;
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return Html(
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data: htmlData,
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style: {
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"body": Style(
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margin: Margins.zero,
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padding: HtmlPaddings.zero,
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fontSize: FontSize(defaultFontSize),
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lineHeight: const LineHeight(1.5),
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color: defaultTextColor,
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),
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"p": Style(
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margin: Margins.only(bottom: 12),
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color: defaultTextColor,
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),
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"b, strong": Style(
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fontWeight: FontWeight.bold,
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color: Colors.black,
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),
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"h1, h2, h3, h4, h5, h6": Style(
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margin: Margins.only(top: 16, bottom: 8),
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color: Colors.black,
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fontWeight: FontWeight.bold,
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),
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"h1": Style(fontSize: FontSize(24)),
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"h2": Style(fontSize: FontSize(20)),
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"h3": Style(fontSize: FontSize(18)),
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"ul, ol": Style(
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margin: Margins.only(bottom: 12),
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padding: HtmlPaddings.only(left: 16),
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),
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"li": Style(
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margin: Margins.only(bottom: 4),
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color: defaultTextColor,
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),
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"strong, b": Style(
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fontWeight: FontWeight.bold,
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color: Colors.black,
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),
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"em, i": Style(fontStyle: FontStyle.italic),
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"code": Style(
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backgroundColor: Colors.grey.shade100,
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padding: HtmlPaddings.symmetric(horizontal: 4, vertical: 2),
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fontFamily: 'monospace',
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),
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"pre": Style(
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backgroundColor: Colors.grey.shade100,
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padding: HtmlPaddings.all(12),
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margin: Margins.only(bottom: 12),
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),
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"blockquote": Style(
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padding: HtmlPaddings.only(left: 16),
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margin: Margins.only(left: 8, bottom: 12),
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fontStyle: FontStyle.italic,
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color: Colors.grey.shade700,
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),
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"a": Style(
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color: Colors.blue,
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textDecoration: TextDecoration.underline,
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),
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"img": Style(width: Width(defaultImageWidth)),
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},
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onLinkTap: onLinkTap ?? ((url, attributes, element) async {
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if (url != null) {
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try {
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final uri = Uri.parse(url);
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if (await canLaunchUrl(uri)) {
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await launchUrl(uri, mode: LaunchMode.externalApplication);
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}
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} catch (e) {
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debugPrint('Error launching URL: $e');
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}
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}
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}) as OnTap,
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);
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}
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}
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