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-rw-r--r--lib/screen/paints/gauge_paint.dart144
1 files changed, 144 insertions, 0 deletions
diff --git a/lib/screen/paints/gauge_paint.dart b/lib/screen/paints/gauge_paint.dart
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+++ b/lib/screen/paints/gauge_paint.dart
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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;
+ }
+}