paint method
Paints the knob onto the given canvas in the given rectangle.
Implementation
void paint(Canvas canvas, Rect rect, bool isOn) {
final RRect rrect = RRect.fromRectAndRadius(
rect,
Radius.circular(rect.shortestSide / 2.0),
);
if (isOn) {
for (final BoxShadow shadow in _kSwitchOnBoxShadows) {
canvas.drawRRect(rrect.shift(shadow.offset), shadow.toPaint());
}
} else {
for (final BoxShadow shadow in _kSwitchOffBoxShadows) {
canvas.drawRRect(rrect.shift(shadow.offset), shadow.toPaint());
}
}
canvas.drawRRect(rrect, Paint()..color = color);
}