Solian/lib/widgets/markdown_text_content.dart
2024-08-07 01:47:53 +08:00

182 lines
5.5 KiB
Dart

import 'package:cached_network_image/cached_network_image.dart';
import 'package:flutter/material.dart';
import 'package:flutter_markdown_selectionarea/flutter_markdown.dart';
import 'package:get/get.dart';
import 'package:markdown/markdown.dart' as markdown;
import 'package:markdown/markdown.dart';
import 'package:solian/platform.dart';
import 'package:solian/providers/stickers.dart';
import 'package:solian/widgets/attachments/attachment_list.dart';
import 'package:url_launcher/url_launcher_string.dart';
import 'account/account_profile_popup.dart';
class MarkdownTextContent extends StatelessWidget {
final String content;
final String parentId;
final bool isSelectable;
const MarkdownTextContent({
super.key,
required this.content,
required this.parentId,
this.isSelectable = false,
});
Widget _buildContent(BuildContext context) {
final emojiRegex = RegExp(r':([-\w]+):');
final emojiMatch = emojiRegex.allMatches(content);
final isOnlyEmoji = content.replaceAll(emojiRegex, '').trim().isEmpty;
return Markdown(
shrinkWrap: true,
physics: const NeverScrollableScrollPhysics(),
data: content,
padding: EdgeInsets.zero,
styleSheet: MarkdownStyleSheet.fromTheme(
Theme.of(context),
).copyWith(
horizontalRuleDecoration: BoxDecoration(
border: Border(
top: BorderSide(
width: 1.0,
color: Theme.of(context).dividerColor,
),
),
),
),
extensionSet: markdown.ExtensionSet(
markdown.ExtensionSet.gitHubFlavored.blockSyntaxes,
<markdown.InlineSyntax>[
_UserNameCardInlineSyntax(),
_CustomEmoteInlineSyntax(),
markdown.EmojiSyntax(),
markdown.AutolinkSyntax(),
markdown.AutolinkExtensionSyntax(),
...markdown.ExtensionSet.gitHubFlavored.inlineSyntaxes
],
),
onTapLink: (text, href, title) async {
if (href == null) return;
if (href.startsWith('solink://')) {
final segments = href.replaceFirst('solink://', '').split('/');
switch (segments[0]) {
case 'users':
showModalBottomSheet(
useRootNavigator: true,
isScrollControlled: true,
backgroundColor: Theme.of(context).colorScheme.surface,
context: context,
builder: (context) => AccountProfilePopup(
name: segments[1],
),
);
}
return;
}
await launchUrlString(
href,
mode: LaunchMode.externalApplication,
);
},
imageBuilder: (uri, title, alt) {
var url = uri.toString();
double? width, height;
BoxFit? fit;
if (url.startsWith('solink://')) {
final segments = url.replaceFirst('solink://', '').split('/');
switch (segments[0]) {
case 'stickers':
final StickerProvider sticker = Get.find();
url = sticker.aliasImageMapping[segments[1].toUpperCase()]!;
if (emojiMatch.length <= 1 && isOnlyEmoji) {
width = 112;
height = 112;
} else if (emojiMatch.length <= 3 && isOnlyEmoji) {
width = 56;
height = 56;
} else {
width = 28;
height = 28;
}
fit = BoxFit.contain;
break;
case 'attachments':
const radius = BorderRadius.all(Radius.circular(8));
return LimitedBox(
maxHeight: MediaQuery.of(context).size.width,
child: ClipRRect(
borderRadius: radius,
child: AttachmentSelfContainedEntry(
isDense: true,
parentId: parentId,
id: int.parse(segments[1]),
),
),
).paddingSymmetric(vertical: 4);
}
}
return PlatformInfo.canCacheImage
? CachedNetworkImage(
imageUrl: url,
width: width,
height: height,
fit: fit,
)
: Image.network(
url,
width: width,
height: height,
fit: fit,
);
},
);
}
@override
Widget build(BuildContext context) {
if (isSelectable) {
return SelectionArea(child: _buildContent(context));
}
return _buildContent(context);
}
}
class _UserNameCardInlineSyntax extends InlineSyntax {
_UserNameCardInlineSyntax() : super(r'@[a-zA-Z0-9_]+');
@override
bool onMatch(markdown.InlineParser parser, Match match) {
final alias = match[0]!;
final anchor = markdown.Element.text('a', alias)
..attributes['href'] = Uri.encodeFull(
'solink://users/${alias.substring(1)}',
);
parser.addNode(anchor);
return true;
}
}
class _CustomEmoteInlineSyntax extends InlineSyntax {
_CustomEmoteInlineSyntax() : super(r':([-\w]+):');
@override
bool onMatch(markdown.InlineParser parser, Match match) {
final StickerProvider sticker = Get.find();
final alias = match[1]!.toUpperCase();
if (sticker.aliasImageMapping[alias] == null) {
parser.advanceBy(1);
return false;
}
final element = markdown.Element.empty('img');
element.attributes['src'] = 'solink://stickers/$alias';
parser.addNode(element);
return true;
}
}