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// SPDX-License-Identifier: Apache-2.0
import 'package:flutter/material.dart';
import 'dart:math';
import 'dart:ui' as ui;
import 'package:flutter_cluster_dashboard/screen/widgets/gauges/gauge_props.dart';
class GaugePainter extends CustomPainter {
final double low, high;
double currentSpeed;
final Color? outPrimaryColor;
final Color? inPrimaryColor;
final Color? secondaryColor;
GaugePainter({
required this.low,
required this.high,
required this.currentSpeed,
this.outPrimaryColor,
this.inPrimaryColor,
this.secondaryColor,
});
@override
void paint(Canvas canvas, Size size) {
Offset center = Offset(size.width / 2, size.height / 2);
double radius = min(size.width / 2, size.height / 2);
double radius1 = radius - ((20 / 200) * (radius));
double speedAngle =
GaugeProps.degToRad((GaugeProps.majorAngle / high) * currentSpeed);
final zeroTickPaint = Paint()
..strokeWidth = ((7 / 200) * (radius))
..shader = ui.Gradient.radial(center, radius1,
[Colors.black, const Color.fromARGB(255, 244, 242, 231)], [1, 0.5]);
final maxTickPaint = Paint()
..strokeWidth = ((7 / 200) * (radius))
..shader = ui.Gradient.radial(center, radius1,
[Colors.black, const Color.fromARGB(255, 244, 242, 231)], [1, 0.5]);
final speedPathStrokePaint = Paint()
..style = PaintingStyle.stroke
..strokeWidth = ((7 / 200) * (radius))
..shader = ui.Gradient.radial(
center, radius1, [Colors.black, Colors.white], [0.6, 1]);
final speedPathFillPaint = Paint()
..style = PaintingStyle.fill
..shader = ui.Gradient.radial(center, radius1, [
const ui.Color.fromARGB(0, 0, 0, 0),
secondaryColor ?? const Color.fromARGB(156, 226, 226, 200)
], [
0.8,
1
]);
final outerPathPaint = ui.Paint()
..style = PaintingStyle.fill
..shader = ui.Gradient.radial(
center,
radius,
[
Colors.black,
outPrimaryColor ?? const Color.fromARGB(255, 120, 120, 120)
],
[0.8, 0.9],
);
final innerPathPaint = Paint()
..style = PaintingStyle.fill
..shader = ui.Gradient.radial(center, radius1, [
Colors.black,
inPrimaryColor ?? const Color.fromARGB(255, 67, 67, 67)
], [
0.65,
0.9
]);
final outerPathPaintRed = ui.Paint()
..style = PaintingStyle.fill
..shader = ui.Gradient.radial(
center,
radius,
[Colors.black, const Color.fromARGB(255, 187, 59, 57)],
[0.8, 0.9],
);
final innerPathPaintRed = Paint()
..style = PaintingStyle.fill
..shader = ui.Gradient.radial(center, radius1,
[Colors.black, const Color.fromARGB(255, 142, 35, 39)], [0.65, 0.9]);
for (double i = 0; i < 13; i++) {
double startAngle = GaugeProps.degToRad(i * 20);
double gapAngle = GaugeProps.degToRad(19);
var outerPath = Path();
outerPath.addArc(Rect.fromCircle(center: center, radius: radius),
startAngle, gapAngle);
outerPath.lineTo(center.dx, center.dy);
outerPath.close();
var innerPath = Path();
innerPath.addArc(Rect.fromCircle(center: center, radius: radius1),
startAngle, gapAngle);
innerPath.lineTo(center.dx, center.dy);
innerPath.close();
if (i >= 11) {
canvas.drawPath(outerPath, outerPathPaintRed);
canvas.drawPath(innerPath, innerPathPaintRed);
} else {
canvas.drawPath(outerPath, outerPathPaint);
canvas.drawPath(innerPath, innerPathPaint);
}
}
var speedStrokePath = Path();
speedStrokePath.moveTo(center.dx, center.dy);
speedStrokePath.addArc(
Rect.fromCircle(center: center, radius: radius), 0, speedAngle);
speedStrokePath.lineTo(center.dx, center.dy);
var speedFillPath = Path();
speedFillPath.addArc(
Rect.fromCircle(center: center, radius: radius), 0, speedAngle);
speedFillPath.lineTo(center.dx, center.dy);
speedFillPath.close();
canvas.drawPath(speedFillPath, speedPathFillPaint);
canvas.drawPath(speedStrokePath, speedPathStrokePaint);
canvas.drawLine(
center,
Offset(center.dx + (radius + ((3 / 200) * (radius))), center.dy),
zeroTickPaint);
canvas.drawLine(
center,
Offset(center.dx + (radius) * cos(GaugeProps.majorAngleRad),
center.dy + (radius) * sin(GaugeProps.majorAngleRad)),
maxTickPaint);
}
@override
bool shouldRepaint(covariant CustomPainter oldDelegate) {
return true;
}
}
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