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Description:

dashed circular progress bar

Dashed circular progress bar #

Open source flutter package, Dashed circular progress bar for flutter apps.
Getting Started #

Installing
Basic Examples

Example 1 - Simple progress bar
Example 2 - Dashed background progress bar
Example 3 - More complex progress bar
Example 4 - Dashed progress bar
Example 5 - Play with circle center alignment

Parameters description

Installing #
Add this line to the pubspec.yaml file below the dependencies:
dependencies:
dashed_circular_progress_bar: ^0.0.6
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Now to use, import this package into the desired file as follows:
import 'package:dashed_circular_progress_bar/dashed_circular_progress_bar.dart';
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Basic examples #
Here are some simple examples you can use to create this package:
Example 1 - Simple progress bar #

First of all, to access the amount of progress when doing animation, you need to define a ValueNotifier:
final ValueNotifier<double> _valueNotifier = ValueNotifier(0);
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Then add it to the widget:
DashedCircularProgressBar.aspectRatio(
aspectRatio: 1, // width ÷ height
valueNotifier: _valueNotifier,
progress: 478,
maxProgress: 670,
corners: StrokeCap.butt,
foregroundColor: Colors.blue,
backgroundColor: const Color(0xffeeeeee),
foregroundStrokeWidth: 36,
backgroundStrokeWidth: 36,
animation: true,
child: Center(
child: ValueListenableBuilder(
valueListenable: _valueNotifier,
builder: (_, double value, __) => Text(
'${value.toInt()}%',
style: const TextStyle(
color: Colors.black,
fontWeight: FontWeight.w300,
fontSize: 60
),
),
),
),
)
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Example 2 - Dashed background progress bar #

DashedCircularProgressBar.aspectRatio(
aspectRatio: 2, // width ÷ height
progress: 34,
startAngle: 270,
sweepAngle: 180,
circleCenterAlignment: Alignment.bottomCenter,
foregroundColor: Colors.black,
backgroundColor: const Color(0xffeeeeee),
foregroundStrokeWidth: 3,
backgroundStrokeWidth: 2,
backgroundGapSize: 2,
backgroundDashSize: 1,
seekColor: Colors.yellow,
seekSize: 22,
animation: true,
)
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Example 3 - More complex progress bar #

DashedCircularProgressBar.aspectRatio(
aspectRatio: 1, // width ÷ height
valueNotifier: _valueNotifier,
progress: 37,
startAngle: 225,
sweepAngle: 270,
foregroundColor: Colors.green,
backgroundColor: const Color(0xffeeeeee),
foregroundStrokeWidth: 15,
backgroundStrokeWidth: 15,
animation: true,
seekSize: 6,
seekColor: const Color(0xffeeeeee),
child: Center(
child: ValueListenableBuilder(
valueListenable: _valueNotifier,
builder: (_, double value, __) => Column(
mainAxisSize: MainAxisSize.min,
children: [
Text(
'${value.toInt()}%',
style: const TextStyle(
color: Colors.black,
fontWeight: FontWeight.w300,
fontSize: 60
),
),
Text(
'Accuracy',
style: const TextStyle(
color: Color(0xffeeeeee),
fontWeight: FontWeight.w400,
fontSize: 16
),
),
],
)
),
),
)
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Example 4 - Dashed progress bar #
You can also use the desired dimensions instead of aspect ratio.

DashedCircularProgressBar.square(
dimensions: 350,
progress: 180,
maxProgress: 360,
startAngle: -27.5,
foregroundColor: Colors.redAccent,
backgroundColor: const Color(0xffeeeeee),
foregroundStrokeWidth: 7,
backgroundStrokeWidth: 7,
foregroundGapSize: 5,
foregroundDashSize: 55,
backgroundGapSize: 5,
backgroundDashSize: 55,
animation: true,
child: const Icon(
Icons.favorite,
color: Colors.redAccent,
size: 126
),
)
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Example 5 - Play with circle center alignment #
By changing the center, you can specify the location of the progress bar.

For example to make a progress bar in the shape of the first image (first row, first image from the left):
DashedCircularProgressBar.aspectRatio(
aspectRatio: 1, // width / height
progress: 60,
startAngle: 90,
sweepAngle: 90,
corners: StrokeCap.butt,
foregroundStrokeWidth: 7,
backgroundStrokeWidth: 7,
circleCenterAlignment: Alignment.topLeft,
foregroundColor: Colors.white,
backgroundColor: const Color(0x22000000),
animation: true
)
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Parameters description #

Parameter
Default
Description

width double
0
Progress bar width.

height double
0
Progress bar height.

aspectRatio double
0
Progress aspect ratio.

progress double
0
Current value of progress bar.

maxProgress double
100
Maximum value of progress.

startAngle double
0
The starting angle of the arc.

sweepAngle double
360
The sweep angle of the arc.

foregroundStrokeWidth double
2
Foreground arc thickness.

backgroundStrokeWidth double
2
Background arc thickness.

foregroundColor Color
Colors.blue
Foreground arc color.

backgroundColor Color
Colors.white
Background arc color.

corners StrokeCap
StrokeCap.round
Styles to use for arcs endings.

foregroundGapSize double
0
Foreground arc gap size.

foregroundDashSize double
0
Foreground arc dash size.

backgroundGapSize double
0
Background arc gap size.

backgroundDashSize double
0
Background arc dash size.

seekSize double
0
Progress bar seek size.

seekColor Color
Colors.blue
Progress bar seek color.

circleCenterAlignment Alignment
Alignment.center
Align center of progress bar.

animation bool
false
Active progress bar animation.

animationDuration Duration
Duration(seconds: 1)
Progress bar animation duration.

animationCurve Curve
Curves.easeOut
Progress bar animation curve.

onAnimationEnd void Function()?
null
This function is called when animation ended.

ltr bool
true
Specifies how to draw arcs from right to left or vice versa.

child Widget?
null
This widget is placed on the progress bar.

valueNotifier ValueNotifier?
null
Animated value notifier.