additionalPaint method

@override void additionalPaint(PaintingContext context, Offset offset)

Implementation

@override
void additionalPaint(PaintingContext context, Offset offset) {
  const dashSize = 4;
  final paint = Paint()..strokeWidth = ruleThickness;
  for (var i = 0; i < hLines.length; i++) {
    switch (hLines[i]) {
      case MatrixSeparatorStyle.solid:
        context.canvas.drawLine(
            Offset(
              offset.dx,
              offset.dy + hLinePos[i] + ruleThickness / 2,
            ),
            Offset(
              offset.dx + width,
              offset.dy + hLinePos[i] + ruleThickness / 2,
            ),
            paint);
        break;
      case MatrixSeparatorStyle.dashed:
        for (var dx = 0.0; dx < width; dx += dashSize) {
          context.canvas.drawLine(
              Offset(
                offset.dx + dx,
                offset.dy + hLinePos[i] + ruleThickness / 2,
              ),
              Offset(
                offset.dx + math.min(dx + dashSize / 2, width),
                offset.dy + hLinePos[i] + ruleThickness / 2,
              ),
              paint);
        }
        break;
      default:
    }
  }

  for (var i = 0; i < vLines.length; i++) {
    switch (vLines[i]) {
      case MatrixSeparatorStyle.solid:
        context.canvas.drawLine(
            Offset(
              offset.dx + vLinePos[i] + ruleThickness / 2,
              offset.dy,
            ),
            Offset(
              offset.dx + vLinePos[i] + ruleThickness / 2,
              offset.dy + totalHeight,
            ),
            paint);
        break;
      case MatrixSeparatorStyle.dashed:
        for (var dy = 0.0; dy < totalHeight; dy += dashSize) {
          context.canvas.drawLine(
              Offset(
                offset.dx + vLinePos[i] + ruleThickness / 2,
                offset.dy + dy,
              ),
              Offset(
                offset.dx + vLinePos[i] + ruleThickness / 2,
                offset.dy + math.min(dy + dashSize / 2, totalHeight),
              ),
              paint);
        }
        break;
      default:
    }
  }
}