roslib_dart/example/pspad/lib/pad.dart
2022-02-24 12:05:32 +08:00

449 lines
13 KiB
Dart

import 'package:flutter/material.dart';
import 'dart:math';
class TrianglePainter extends CustomPainter {
double sideSize;
Color color;
TrianglePainter({required this.sideSize, required this.color});
@override
void paint(Canvas canvas, Size size) {
double ySize = sideSize * cos(30 * pi / 180);
double xSize = sideSize;
double point0x = xSize / 2;
double point0y = ySize / 2;
double point1x = -xSize / 2;
double point1y = ySize / 2;
double point2x = 0;
double point2y = -ySize / 2;
Path path = Path();
path.moveTo(point0x, point0y);
path.lineTo(point1x, point1y);
path.lineTo(point2x, point2y);
path.lineTo(point0x, point0y);
path.close();
canvas.drawPath(
path,
Paint()
..color = color
..strokeWidth = 4
..style = PaintingStyle.stroke);
canvas.save();
canvas.restore();
}
@override
bool shouldRepaint(TrianglePainter oldDelegate) {
return oldDelegate.color != color || oldDelegate.sideSize != sideSize;
}
}
Widget triangle(double sideSize, Color color, double angle) {
return Transform.rotate(
child: CustomPaint(
painter: TrianglePainter(
color: color,
sideSize: sideSize,
),
),
angle: angle * pi / 180);
}
class SquarePainter extends CustomPainter {
double xSize, ySize;
Color color;
SquarePainter(
{required this.xSize, required this.ySize, required this.color});
@override
void paint(Canvas canvas, Size size) {
double point0x = xSize / 2;
double point0y = ySize / 2;
double point1x = -xSize / 2;
double point1y = ySize / 2;
double point2x = -xSize / 2;
double point2y = -ySize / 2;
double point3x = xSize / 2;
double point3y = -ySize / 2;
Path path = Path();
path.moveTo(point0x, point0y);
path.lineTo(point1x, point1y);
path.lineTo(point2x, point2y);
path.lineTo(point3x, point3y);
path.lineTo(point0x, point0y);
path.close();
canvas.drawPath(
path,
Paint()
..color = color
..strokeWidth = 4
..style = PaintingStyle.stroke);
canvas.save();
canvas.restore();
}
@override
bool shouldRepaint(SquarePainter oldDelegate) {
return oldDelegate.color != color ||
oldDelegate.xSize != xSize ||
oldDelegate.ySize != ySize;
}
}
Widget square(double size, Color color) {
return CustomPaint(
painter: SquarePainter(
color: color,
xSize: size,
ySize: size,
));
}
Widget circle(double diameter, Color? color) {
return Container(
width: diameter,
height: diameter,
decoration: BoxDecoration(
color: color,
shape: BoxShape.circle,
),
);
}
Widget hollowCircle(double diameter, Color color) {
return Container(
width: diameter,
height: diameter,
decoration: BoxDecoration(
shape: BoxShape.circle,
border: Border.all(
width: 4,
color: color,
),
),
);
}
class CrossPainter extends CustomPainter {
double xSize, ySize;
Color color;
CrossPainter({required this.xSize, required this.ySize, required this.color});
@override
void paint(Canvas canvas, Size size) {
double point0x = xSize / 2;
double point0y = ySize / 2;
double point1x = -xSize / 2;
double point1y = ySize / 2;
double point2x = -xSize / 2;
double point2y = -ySize / 2;
double point3x = xSize / 2;
double point3y = -ySize / 2;
final paint = Paint()
..color = color
..strokeWidth = 4;
canvas.drawLine(Offset(point0x, point0y), Offset(point2x, point2y), paint);
canvas.drawLine(Offset(point1x, point1y), Offset(point3x, point3y), paint);
}
@override
bool shouldRepaint(CrossPainter oldDelegate) {
return oldDelegate.color != color ||
oldDelegate.xSize != xSize ||
oldDelegate.ySize != ySize;
}
}
Widget cross(double size, Color color) {
return CustomPaint(
painter: CrossPainter(
color: color,
xSize: size,
ySize: size,
));
}
class DirectionPad extends StatefulWidget {
final double diameter;
final Function leftCallback, rightCallback, forwardCallback, backwardCallback;
const DirectionPad(
{Key? key,
required this.diameter,
required this.leftCallback,
required this.rightCallback,
required this.forwardCallback,
required this.backwardCallback})
: super(key: key);
@override
State<DirectionPad> createState() => _DirectionPadState();
}
class _DirectionPadState extends State<DirectionPad> {
Widget horizontalBar(double longSize, double shortSize, Color color) {
return Container(
width: longSize,
height: shortSize,
decoration: BoxDecoration(
color: color,
border: Border.all(
color: color,
),
borderRadius: const BorderRadius.all(Radius.circular(5))));
}
@override
Widget build(BuildContext context) {
double diameter = widget.diameter;
double circleDiameter = diameter;
double keyLongSize = diameter * 0.8;
double keyShortSize = diameter * 0.25;
double longMargin = (circleDiameter - keyLongSize) / 2;
double shortMargin = (circleDiameter - keyShortSize) / 2;
double triangleSize = diameter * 0.175;
Color callbackColor = const Color(0x00000000).withOpacity(0.0);
return Stack(
children: [
circle(circleDiameter, Colors.grey[300]),
Positioned(
left: longMargin,
top: shortMargin,
child: horizontalBar(keyLongSize, keyShortSize, Colors.grey[600]!)),
Positioned(
left: shortMargin,
top: longMargin,
child: horizontalBar(keyShortSize, keyLongSize, Colors.grey[600]!)),
// Left Button
Positioned(
left: longMargin + keyLongSize / 6,
top: shortMargin + keyShortSize / 2,
child: triangle(triangleSize, Colors.grey[800]!, -90.0)),
Positioned(
left: longMargin + keyLongSize / 6 - triangleSize / 2,
top: shortMargin + keyShortSize / 2 - triangleSize / 2,
child: Listener(
onPointerDown: (event) {
widget.leftCallback(-1);
},
onPointerUp: (event) {
widget.leftCallback(1);
},
child: Container(
width: triangleSize,
height: triangleSize,
color: callbackColor,
))),
// Forward Button
Positioned(
left: diameter / 2,
top: longMargin + keyLongSize / 6,
child: triangle(triangleSize, Colors.grey[800]!, 0.0)),
Positioned(
left: diameter / 2 - triangleSize / 2,
top: longMargin + keyLongSize / 6 - triangleSize / 2,
child: Listener(
onPointerDown: (event) {
widget.forwardCallback(-1);
},
onPointerUp: (event) {
widget.forwardCallback(1);
},
child: Container(
width: triangleSize,
height: triangleSize,
color: callbackColor))),
// Backward Button
Positioned(
left: diameter / 2,
top: longMargin + keyLongSize * 2 / 3 + keyLongSize / 6,
child: triangle(triangleSize, Colors.grey[800]!, 180.0)),
Positioned(
left: diameter / 2 - triangleSize / 2,
top: longMargin +
keyLongSize * 2 / 3 +
keyLongSize / 6 -
triangleSize / 2,
child: Listener(
onPointerDown: (event) {
widget.backwardCallback(-1);
},
onPointerUp: (event) {
widget.backwardCallback(1);
},
child: Container(
width: triangleSize,
height: triangleSize,
color: callbackColor,
))),
// Right Button
Positioned(
left: longMargin + keyLongSize * 2 / 3 + keyLongSize / 6,
top: shortMargin + keyShortSize / 2,
child: triangle(triangleSize, Colors.grey[800]!, 90.0)),
Positioned(
left: longMargin +
keyLongSize * 2 / 3 +
keyLongSize / 6 -
triangleSize / 2,
top: shortMargin + keyShortSize / 2 - triangleSize / 2,
child: Listener(
onPointerDown: (event) {
widget.rightCallback(-1);
},
onPointerUp: (event) {
widget.rightCallback(1);
},
child: Container(
width: triangleSize,
height: triangleSize,
color: callbackColor,
))),
],
);
}
}
class KeyPad extends StatefulWidget {
final double diameter;
final Function squareCallback,
circleCallback,
triangleCallback,
crossCallback;
const KeyPad(
{Key? key,
required this.diameter,
required this.squareCallback,
required this.circleCallback,
required this.triangleCallback,
required this.crossCallback})
: super(key: key);
@override
State<KeyPad> createState() => _KeyPadState();
}
class _KeyPadState extends State<KeyPad> {
@override
Widget build(BuildContext context) {
double diameter = widget.diameter;
double circleDiameter = diameter;
double shortMargin = diameter * 0.225;
double keySize = diameter * 0.275;
double iconSize = diameter * 0.125;
double hollowCircleDiameter = iconSize + 8;
Color callbackColor = const Color(0x00000000).withOpacity(0.0);
return Stack(children: [
Positioned(child: circle(circleDiameter, Colors.grey[300]!)),
Positioned(
left: shortMargin - keySize / 2,
top: circleDiameter / 2 - keySize / 2,
child: circle(keySize, Colors.grey[700]!)),
Positioned(
left: circleDiameter - shortMargin - keySize / 2,
top: circleDiameter / 2 - keySize / 2,
child: circle(keySize, Colors.grey[700]!)),
Positioned(
left: circleDiameter / 2 - keySize / 2,
top: circleDiameter - shortMargin - keySize / 2,
child: circle(keySize, Colors.grey[700]!)),
Positioned(
left: circleDiameter / 2 - keySize / 2,
top: shortMargin - keySize / 2,
child: circle(keySize, Colors.grey[700]!)),
Positioned(
left: circleDiameter / 2,
top: shortMargin - 4,
child: triangle(iconSize, Colors.green[500]!, 0)),
Positioned(
left: circleDiameter / 2 - keySize / 2,
top: shortMargin - keySize / 2,
child: Listener(
onPointerDown: (event) {
widget.triangleCallback(-1);
},
onPointerUp: (event) {
widget.triangleCallback(1);
},
child: Container(
width: keySize,
height: keySize,
color: callbackColor,
))),
Positioned(
left: circleDiameter / 2,
top: circleDiameter - shortMargin,
child: cross(iconSize, Colors.cyan[500]!)),
Positioned(
left: circleDiameter / 2 - keySize / 2,
top: circleDiameter - shortMargin - keySize / 2,
child: Listener(
onPointerDown: (event) {
widget.triangleCallback(-1);
},
onPointerUp: (event) {
widget.triangleCallback(1);
},
child: Container(
width: keySize,
height: keySize,
color: callbackColor,
))),
Positioned(
left: shortMargin,
top: circleDiameter / 2,
child: square(iconSize, Colors.pink[500]!)),
Positioned(
left: shortMargin - keySize / 2,
top: circleDiameter / 2 - keySize / 2,
child: Listener(
onPointerDown: (event) {
widget.triangleCallback(-1);
},
onPointerUp: (event) {
widget.triangleCallback(1);
},
child: Container(
width: keySize,
height: keySize,
color: callbackColor,
))),
Positioned(
left: -hollowCircleDiameter / 2 + circleDiameter - shortMargin,
top: -hollowCircleDiameter / 2 + circleDiameter / 2,
child: hollowCircle(hollowCircleDiameter, Colors.orange[500]!)),
Positioned(
left: -hollowCircleDiameter / 2 + circleDiameter - keySize,
top: circleDiameter / 2 - keySize / 2,
child: Listener(
onPointerDown: (event) {
widget.triangleCallback(-1);
},
onPointerUp: (event) {
widget.triangleCallback(1);
},
child: Container(
width: keySize,
height: keySize,
color: callbackColor,
))),
]);
}
}