mirror of
https://github.com/wanghongenpin/proxypin.git
synced 2026-04-15 21:03:48 +08:00
87 lines
3.3 KiB
Dart
87 lines
3.3 KiB
Dart
/*
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* Copyright 2024 Hongen Wang All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import 'package:flutter/material.dart';
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/// 匹配文本高亮
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/// @author: Hongen Wang
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class HighlightTextEditingController extends TextEditingController {
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RegExp? highlightPattern;
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String? splitPattern;
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//
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bool highlightEnabled = true;
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HighlightTextEditingController({super.text});
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bool highlight(String? value, {bool caseSensitive = true}) {
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highlightPattern = value == null ? null : RegExp(value, caseSensitive: caseSensitive);
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return highlightPattern?.hasMatch(text) ?? false;
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}
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@override
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TextSpan buildTextSpan({required BuildContext context, TextStyle? style, required bool withComposing}) {
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final text = this.text;
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if (!highlightEnabled || highlightPattern == null || !highlightPattern!.hasMatch(text)) {
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return super.buildTextSpan(context: context, style: style, withComposing: withComposing);
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}
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Color color = Theme.of(context).colorScheme.primary;
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final highlightStyle = style?.copyWith(color: color);
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final normalStyle = style;
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List<TextSpan> spans = [];
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if (splitPattern != null) {
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var texts = text.split(splitPattern!);
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for (var i = 0; i < texts.length; i++) {
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matchHighlight(texts[i], spans, normalStyle: normalStyle, highlightStyle: highlightStyle);
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spans.add(TextSpan(text: splitPattern, style: normalStyle));
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}
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} else {
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matchHighlight(text, spans, normalStyle: normalStyle, highlightStyle: highlightStyle);
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}
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return TextSpan(children: spans, style: style);
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}
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matchHighlight(String text, List<TextSpan> spans, {TextStyle? normalStyle, TextStyle? highlightStyle}) {
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int start = 0;
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for (final match in highlightPattern!.allMatches(text)) {
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if (match.start > start) {
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spans.add(TextSpan(text: text.substring(start, match.start), style: normalStyle));
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}
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spans.add(TextSpan(text: match.group(0), style: highlightStyle));
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start = match.end;
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}
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if (start < text.length) {
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spans.add(TextSpan(text: text.substring(start), style: normalStyle));
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}
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}
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}
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InputDecoration decoration(BuildContext context, {String? label, String? hintText, Widget? suffixIcon}) {
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Color color = Theme.of(context).colorScheme.primary;
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return InputDecoration(
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floatingLabelBehavior: FloatingLabelBehavior.always,
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labelText: label,
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hintText: hintText,
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suffixIcon: suffixIcon,
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hintStyle: TextStyle(color: Colors.grey.shade500, fontSize: 15),
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border: OutlineInputBorder(borderSide: BorderSide(width: 0.8, color: color)),
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enabledBorder: OutlineInputBorder(borderSide: BorderSide(width: 1.3, color: color)),
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focusedBorder: OutlineInputBorder(borderSide: BorderSide(width: 2, color: color)));
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}
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