how to use an existing composite image in GWT

[Yogesh]

Hi,

I already have a composite image with me. How can I use this composite
image along with ClientBundle / ImageBundle in GWT to show different
images extracted from this composite image?

Regards,
Yogesh

[Thomas Broyer]

You can't.

You can use it as a DataResource and then either use it in a CssResource just like a "basic" CSS sprite (i.e. not a @sprite), grabbing the image URL (possibly an embedded data: URL) with @url; or with an Image widget using setUrlAndVisibleRect, or your can implement the ImageResource interface returning the appropriate values for the methods (i.e. implement ClientBundle yourself rather than relying on the generator). That last approach makes your code "forward compatible" with ClientBundle, so you can later switch to a "real" ClientBundle without changing your code (you can even use a <replace-with> rule so you can GWT.create() your implementing class in your code, just like if it were using the generator); the only difference is that you cannot use your "fake" ImageResource within a CssResource (with @sprite).

If I were you though, I'd split the individual images and use "real" ClientBundle+ImageResource (and  @sprite in a CssResource if you need).