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Changelog 1.2.0: - Upgraded from Dart 2.11.0 to 2.12.3 for null safety - The animated_check package is not null safe and was removed - animated_check is now local and null safe. Will be making a PR soon on the official Github The following files have been updated to be null safe - DriveHelper.dart - FileAppendDialog.dart - HomePage.dart - LogOutDialog.dart
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,119 @@ | ||
| // https://github.com/chrisedg87/flutter_animated_check | ||
| // MIT License | ||
| // By chrisedg87 | ||
| // Copied for null safety purposes | ||
|
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| import 'dart:ui'; | ||
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| import 'package:flutter/material.dart'; | ||
|
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| class AnimatedCheck extends StatefulWidget { | ||
| AnimatedCheck({ | ||
| Key? key, | ||
| required this.progress, | ||
| required this.size, | ||
| this.color, | ||
| this.strokeWidth, | ||
| }) : super(key: key); | ||
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| final Animation<double> progress; | ||
| final double size; // The size of the checkmark | ||
| final Color? color; // The primary color of the checkmark | ||
| final double? strokeWidth; // The width of the checkmark stroke | ||
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| @override | ||
| State<StatefulWidget> createState() => AnimatedCheckState(); | ||
| } | ||
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| class AnimatedCheckState extends State<AnimatedCheck> | ||
| with SingleTickerProviderStateMixin { | ||
| @override | ||
| Widget build(BuildContext context) { | ||
| return CustomPaint( | ||
| foregroundPainter: AnimatedPathPainter( | ||
| widget.progress, | ||
| widget.color ?? Theme.of(context).primaryColor, | ||
| widget.strokeWidth, | ||
| ), | ||
| child: new SizedBox( | ||
| width: widget.size, | ||
| height: widget.size, | ||
| ), | ||
| ); | ||
| } | ||
| } | ||
|
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| class AnimatedPathPainter extends CustomPainter { | ||
| AnimatedPathPainter( | ||
| this._animation, | ||
| this._color, | ||
| this.strokeWidth, | ||
| ) : super(repaint: _animation); | ||
|
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| final Animation<double> _animation; | ||
| final Color _color; | ||
| final double? strokeWidth; | ||
|
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| Path _createAnyPath(Size size) { | ||
| return Path() | ||
| ..moveTo(0.27083 * size.width, 0.54167 * size.height) | ||
| ..lineTo(0.41667 * size.width, 0.68750 * size.height) | ||
| ..lineTo(0.75000 * size.width, 0.35417 * size.height); | ||
| } | ||
|
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| Path createAnimatedPath(Path originalPath, double animationPercent) { | ||
| final totalLength = originalPath | ||
| .computeMetrics() | ||
| .fold(0.0, (double prev, PathMetric metric) => prev + metric.length); | ||
|
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| final currentLength = totalLength * animationPercent; | ||
|
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| return extractPathUntilLength(originalPath, currentLength); | ||
| } | ||
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| Path extractPathUntilLength(Path originalPath, double length) { | ||
| var currentLength = 0.0; | ||
|
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| final path = new Path(); | ||
|
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| var metricsIterator = originalPath.computeMetrics().iterator; | ||
|
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| while (metricsIterator.moveNext()) { | ||
| var metric = metricsIterator.current; | ||
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| var nextLength = currentLength + metric.length; | ||
|
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| final isLastSegment = nextLength > length; | ||
| if (isLastSegment) { | ||
| final remainingLength = length - currentLength; | ||
| final pathSegment = metric.extractPath(0.0, remainingLength); | ||
|
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| path.addPath(pathSegment, Offset.zero); | ||
| break; | ||
| } else { | ||
| final pathSegment = metric.extractPath(0.0, metric.length); | ||
| path.addPath(pathSegment, Offset.zero); | ||
| } | ||
|
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| currentLength = nextLength; | ||
| } | ||
|
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| return path; | ||
| } | ||
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| @override | ||
| void paint(Canvas canvas, Size size) { | ||
| final animationPercent = this._animation.value; | ||
| final path = createAnimatedPath(_createAnyPath(size), animationPercent); | ||
| final Paint paint = Paint(); | ||
|
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| paint.color = _color; | ||
| paint.style = PaintingStyle.stroke; | ||
| paint.strokeWidth = strokeWidth ?? size.width * 0.06; | ||
|
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| canvas.drawPath(path, paint); | ||
| } | ||
|
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| @override | ||
| bool shouldRepaint(CustomPainter oldDelegate) => true; | ||
| } |
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