Save component to image

[Bryan Buchanan]

I want to do the same as this Android code in CN1:

Bitmap mBitmap = Bitmap.createBitmap(mContent.getWidth(), mContent.getHeight(), Bitmap.Config.RGB_565);
Canvas canvas = new Canvas(mBitmap);
v.draw(canvas);                            // draw current view to bitmap
ByteArrayOutputStream stream = new ByteArrayOutputStream();
mBitmap.compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[] byteArray = stream.toByteArray();   // now have PNG of the component

Shai answered a similar question with: "You can create a mutable image (Image.create(width,height)) then invoke getGraphics on it and paint the component onto it.", which seems reasonable, but I'm not sure what to do to make that happen.

[Chen Fishbein]

Try this:               

                Image buffer = Image.createImage(width, height);

                Graphics g = buffer.getGraphics();

                

               g.translate(-cmp.getAbsoluteX(), -cmp.getAbsoluteY());

                cmp.paintComponent(g);

               g.translate(cmp.getAbsoluteX(), cmp.getAbsoluteY());

              

               ByteArrayOutputStream stream = new ByteArrayOutputStream();

               ImageIO.getImageIO().save(buffer, stream, ImageIO.FORMAT_PNG, 1);

               byte[] byteArray = stream.toByteArray();

[Bryan Buchanan]

Thanks Chen.

On further looking around I noticed the SignatureComponent which Steve had written which has exactly the code I wanted - clever guy that Steve !

Thanks.