drawPointerIcon method

void drawPointerIcon(Canvas canvas, Size size)

Draws the gauge pointer icon

Implementation

void drawPointerIcon(Canvas canvas, Size size) {
  final pointerIconPainter = TextPainter(
    text: TextSpan(
      text: String.fromCharCode(pointerIcon.icon!.codePoint),
      style: TextStyle(
        color: pointerIcon.color == null ? Colors.black : pointerIcon.color,
        fontSize: pointerIcon.size == null ? 25 : pointerIcon.size,
        package: pointerIcon.icon!.fontPackage,
        fontFamily: pointerIcon.icon!.fontFamily,
      ),
    ),
    textDirection: TextDirection.ltr,
  )..layout();

  switch (gaugeOrientation) {
    case GaugeOrientation.horizontal:
      final Offset pointerIconPosition = Offset(
          (size.width / 2.5) - pointerIconPainter.width + 30,
          getActualValuePosition(size) - (pointerIconPainter.height / 2));
      final pivot = pointerIconPainter.size.center(pointerIconPosition);
      canvas.save();
      canvas.translate(pivot.dx, pivot.dy);
      canvas.rotate(RadialHelper.degreesToRadians(-90));
      canvas.translate(-pivot.dx, -pivot.dy);
      pointerIconPainter.paint(canvas, pointerIconPosition);
      canvas.restore();
      break;
    case GaugeOrientation.vertical:
      final Offset pointerIconPosition = Offset(
          (size.width / 2.5) - pointerIconPainter.width + 30,
          getActualValuePosition(size) - (pointerIconPainter.height / 2));
      pointerIconPainter.paint(canvas, pointerIconPosition);
      break;
  }
}