lemmur-app-android/lib/widgets/markdown_text.dart

68 lines
2.2 KiB
Dart

import 'dart:io';
import 'package:flutter/material.dart';
import 'package:flutter_markdown/flutter_markdown.dart';
import 'package:markdown/markdown.dart' as md;
import '../url_launcher.dart';
import 'cached_network_image.dart';
import 'fullscreenable_image.dart';
/// A Markdown renderer with link/image handling
class MarkdownText extends StatelessWidget {
final String instanceHost;
final String text;
final bool selectable;
const MarkdownText(this.text,
{required this.instanceHost, this.selectable = false});
@override
Widget build(BuildContext context) {
final theme = Theme.of(context);
return MarkdownBody(
key: ValueKey(Object.hashAll([selectable, text, instanceHost])),
selectable: selectable,
data: text,
extensionSet: md.ExtensionSet.gitHubWeb,
styleSheet: MarkdownStyleSheet.fromTheme(theme).copyWith(
blockquoteDecoration: BoxDecoration(
color: Colors.grey.withOpacity(0.3),
border: Border(
left: BorderSide(width: 2, color: theme.colorScheme.secondary),
),
),
code: theme.textTheme.bodyText1
// TODO: use a font from google fonts maybe? the defaults aren't very pretty
?.copyWith(fontFamily: Platform.isIOS ? 'Courier' : 'monospace'),
),
onTapLink: (text, href, title) {
if (href == null) return;
linkLauncher(context: context, url: href, instanceHost: instanceHost)
.catchError(
(e) => ScaffoldMessenger.of(context).showSnackBar(SnackBar(
content: Row(
children: [
const Icon(Icons.warning),
Text("couldn't open link, ${e.toString()}"),
],
),
)));
},
imageBuilder: (uri, title, alt) => FullscreenableImage(
url: uri.toString(),
child: CachedNetworkImage(
imageUrl: uri.toString(),
errorBuilder: (context, error) => Row(
children: [
const Icon(Icons.warning),
Text("couldn't load image, ${error.toString()}")
],
),
),
),
);
}
}