How to export a canvas to PDF

[Sarah Raf]

Hi,
Does Java have an API to export a canvas to PDF format? or any other 3rd party APIs can be used?

Regards,
Sarah

[Jesper de Jong]

There are a number of libraries for working with PDF files in Java.

What do you mean by "canvas"; do you mean an HTML 5 canvas? If yes, then you're talking about JavaScript, which is something that does not have very much to do with Java.

[Ulf Dittmer]

If Canvas refers to the AWT object, then it's probably easier to export its contents to an image, and then add the image to a PDF using a library such as iText.

[Sarah Raf]

Jesper de Jong wrote:There are a number of libraries for working with PDF files in Java.

What do you mean by "canvas"; do you mean an HTML 5 canvas? If yes, then you're talking about JavaScript, which is something that does not have very much to do with Java.

Thanks Jesper.
I am using Open GL libraries and from my Java code, I am referring to the Canvas, using the getCanvas() method. So basically my question is all about Java. And yes I did check out the iText library. Thou i'm still trying to use it..

Regards,
Sarah

[Sarah Raf]

Ulf Dittmer wrote:If Canvas refers to the AWT object, then it's probably easier to export its contents to an image, and then add the image to a PDF using a library such as iText.

Yes Ulf, its an AWT object, but it does have openGL libraries too. How could i export the contents to an image?

[Ulf Dittmer]

See http://stackoverflow.com/questions/408042/vector-graphics-in-itext-pdf for how to add a Graphics2D to a PDF using iText.

[Sarah Raf]

Thanks Ulf.
Will surely try it.

[Sarah Raf]

Ok here's the problem I am facing... my image is I need to export only the chart part of my image into PDF format.
I tried to this :

Document document = new Document();
		Image image1 = Image.getInstance("Chart.jpg");
		PdfWriter.getInstance(document, new FileOutputStream("Chart.pdf"));
		document.open();
		document.add(new Paragraph("\n"+"AWT Image"));
		document.add(image1);				
		document.newPage();	

But my chart is dynamic. It refreshes every time I perform some mouse action.. So I don't want to explicitly specify my chart image. How do I go about it???

[Ulf Dittmer]

At any given point in time the chart is static :-) You should be able to draw it onto a given Graphics2D object, no?

[Sarah Raf]

Thanks Ulf...
I found the API to capture the image instance and now I got it in the PDF format... Thanks so much for the suggestions

Regards,
Sarah