drawShape method
Implementation
@override
void drawShape(PdfGraphics canvas) {
canvas
..saveContext()
..setTransform(Matrix4.identity()
..scale(1.0, -1.0)
..translate(x, -y!))
..drawString(font, brush.fontSize!.sizeValue, text, 0, 0,
mode: PdfTextRenderingMode.clip)
..restoreContext();
for (final span in tspan) {
span.draw(canvas);
}
}