Placing canvas inside Div element - geometry

Question

I am trying to create a circle in itext 7 and then place this circle anywhere in I need to in the document.
The document is laid out using divs and I have managed to create the circle using a PdfCanvas.
Below is a snippet of what I am trying to achieve and there may well be a better way to do this:
PdfDocument pdfDoc = new PdfDocument(writer);
Document doc = new Document(pdfDoc);
PdfPage pdfPage = pdfDoc.addNewPage();
Div div = new Div();
div.setBackgroundColor(Color.CYAN);
div.setHeight(10.0F);
div.add(new Paragraph(" ").setFont(PdfFontFactory.createFont(FontConstants.COURIER_BOLD)));
doc.add(div);
PdfCanvas canvas = new PdfCanvas(pdfPage);
Color white = Color.WHITE;
Color black = Color.BLACK;
canvas.setColor(white, true)
.setStrokeColor(black)
.circle(15, 800, 8)
.fillStroke();
canvas.beginText()
.setFontAndSize(PdfFontFactory.createFont(FontConstants.COURIER_BOLD), 10)
.setColor(black, true)
.moveText(15 - 3, 800 - 3)
.showText("1")
.endText();
doc.close();
If there is a correct way of wrapping some text (number) in a circle that can be positioned inside a div then I will happily change to this method if someone can point me towards a tutorial or some documentation I can follow.

Answer 1

If anybody is looking for an easy way to do this then you can override the draw method of Div.
public class Circle extends Div
{
#Override
public IRenderer getRenderer()
{
return new CircleRenderer(this);
}
private class CircleRenderer extends DivRenderer
{
public CircleRenderer(final Circle circle)
{
super(circle);
setPadding(PADDING);
}
#Override
public void draw(final DrawContext drawContext)
{
final PdfCanvas canvas = drawContext.getCanvas();
final Rectangle area = this.occupiedArea.getBBox();
final float x = area.getX();
final float y = area.getY();
canvas.circle(x, y, 8);
canvas.fillStroke();
super.draw(drawContext);
}
}
}
After I draw the canvas I need to do some correction of the x and y positions and same for any text placed inside the circle.