81 lines
2.6 KiB
Dart
81 lines
2.6 KiB
Dart
import 'package:flutter/material.dart';
|
|
|
|
class CollapsibleText extends StatefulWidget {
|
|
final String text;
|
|
final int maxLines;
|
|
final TextStyle? style;
|
|
final bool small;
|
|
|
|
const CollapsibleText({super.key, required this.text, this.maxLines = 4, this.style, this.small = false});
|
|
|
|
@override
|
|
State<CollapsibleText> createState() => _CollapsibleTextState();
|
|
}
|
|
|
|
class _CollapsibleTextState extends State<CollapsibleText> {
|
|
bool _expanded = false;
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
final style = widget.style ?? DefaultTextStyle.of(context).style;
|
|
|
|
return LayoutBuilder(
|
|
builder: (context, constraints) {
|
|
final textPainter = TextPainter(
|
|
text: TextSpan(text: widget.text, style: style),
|
|
maxLines: widget.maxLines,
|
|
textDirection: TextDirection.ltr,
|
|
)..layout(maxWidth: constraints.maxWidth);
|
|
|
|
final overflows = textPainter.didExceedMaxLines;
|
|
|
|
if (!overflows) {
|
|
textPainter.dispose();
|
|
return Text(widget.text, style: style);
|
|
}
|
|
|
|
String displayText = widget.text;
|
|
if (!_expanded) {
|
|
// Find where to truncate to leave room for the badge on the last line
|
|
final cutPoint = textPainter.getPositionForOffset(Offset(constraints.maxWidth - 54, textPainter.height - 1));
|
|
displayText = widget.text.substring(0, cutPoint.offset).trimRight();
|
|
}
|
|
textPainter.dispose();
|
|
|
|
return GestureDetector(
|
|
onTap: () => setState(() => _expanded = !_expanded),
|
|
child: Text.rich(
|
|
TextSpan(
|
|
children: [
|
|
TextSpan(text: displayText, style: style),
|
|
if (!_expanded) WidgetSpan(alignment: widget.small ? PlaceholderAlignment.baseline : PlaceholderAlignment.middle, baseline: widget.small ? TextBaseline.alphabetic : null, child: _buildBadge(context)),
|
|
],
|
|
),
|
|
),
|
|
);
|
|
},
|
|
);
|
|
}
|
|
|
|
Widget _buildBadge(BuildContext context) {
|
|
final isSmall = widget.small;
|
|
return Container(
|
|
margin: const EdgeInsets.only(left: 6),
|
|
padding: EdgeInsets.symmetric(horizontal: isSmall ? 6 : 8, vertical: isSmall ? 0 : 2),
|
|
decoration: BoxDecoration(
|
|
color: Theme.of(context).colorScheme.onSurface.withValues(alpha: 0.12),
|
|
borderRadius: BorderRadius.all(Radius.circular(isSmall ? 8 : 10)),
|
|
),
|
|
child: Text(
|
|
'\u00B7\u00B7\u00B7',
|
|
style: TextStyle(
|
|
fontSize: isSmall ? 10 : 12,
|
|
fontWeight: FontWeight.bold,
|
|
color: Theme.of(context).colorScheme.onSurfaceVariant,
|
|
letterSpacing: isSmall ? 1.5 : 2,
|
|
),
|
|
),
|
|
);
|
|
}
|
|
}
|