48 lines
1.3 KiB
Dart
48 lines
1.3 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:fluffychat/config/app_config.dart';
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class TokenRenderingUtil {
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TokenRenderingUtil();
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static final Map<String, double> _tokensWidthCache = {};
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double tokenTextWidthForContainer(
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String text,
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Color underlineColor,
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TextStyle style,
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double fontSize,
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) {
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final tokenSizeKey = "$text-$fontSize";
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if (_tokensWidthCache.containsKey(tokenSizeKey)) {
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return _tokensWidthCache[tokenSizeKey]!;
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}
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final textPainter = TextPainter(
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text: TextSpan(text: text, style: style),
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maxLines: 1,
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textDirection: TextDirection.ltr,
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)..layout();
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final width = textPainter.width;
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textPainter.dispose();
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_tokensWidthCache[tokenSizeKey] = width;
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return width;
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}
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static Color underlineColor(
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Color underlineColor, {
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bool selected = false,
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bool highlighted = false,
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bool isNew = false,
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bool practiceMode = false,
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bool hovered = false,
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}) {
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if (practiceMode) return Colors.white.withAlpha(0);
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if (highlighted) return underlineColor;
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if (isNew) return AppConfig.success.withAlpha(200);
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if (selected) return underlineColor;
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if (hovered) return underlineColor.withAlpha(100);
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return Colors.white.withAlpha(0);
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}
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}
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