Bernd Stramm wrote:
> Hello all,
>
> probably this has come up before, but I can't find it:
>
> my application has to display JPEG images, but does not load
> them from disk files. They come in as blobs from a remote database.
>
> Is there a way to load these into an Fl_JPEG_image?
>
> Right now I am reduced to writing them to a temp file, and then reading that
> into the image. But that is a bad solution: it assumes that I can write to
> disk in this application.
>
> I read the code (fltk 1.1.9), there doesn't seem to be a straightforward way,
> can't just hook up an istream, or something of that nature.
If it were me, and the blobs were in ram as RGB data, then
I wouldn't use Fl_JPEG_image at all.. it's no longer a jpeg
image, but already decoded into rgb, so you'd probably just
want to slap it up on the screen with fl_draw_image(), eg:
http://seriss.com/people/erco/fltk/#FlDrawImage
..which shows how to take an RGB image buffer and display it
to the screen with one simple fl_draw_image() call in the
draw() function.
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