paint method

@override void paint(Context context)

Draw itself and its children, according to the calculated box.offset

Implementation

@override
void paint(Context context) {
  super.paint(context);

  if (child != null) {
    final resolvedAlignment = alignment.resolve(Directionality.of(context));
    final childSize = child!.box!.size;
    final sizes = applyBoxFit(fit, childSize, box!.size);
    final scaleX = sizes.destination!.x / sizes.source!.x;
    final scaleY = sizes.destination!.y / sizes.source!.y;
    final sourceRect = resolvedAlignment.inscribe(
      sizes.source!,
      PdfRect.fromPoints(PdfPoint.zero, childSize),
    );
    final destinationRect = resolvedAlignment.inscribe(
      sizes.destination!,
      box!,
    );

    final mat =
        Matrix4.translationValues(
            destinationRect.left,
            destinationRect.bottom,
            0,
          )
          ..scaleByDouble(scaleX, scaleY, 1, 1)
          ..translateByDouble(-sourceRect.left, -sourceRect.bottom, 0, 1);

    context.canvas
      ..saveContext()
      ..drawBox(box!)
      ..clipPath()
      ..setTransform(mat);
    child!.paint(context);
    context.canvas.restoreContext();
  }
}