[cello-devel] scroller

[Kenny Tilton]

Check it out:

   ftp://common-lisp.net/pub/project/cello/screenshots/scroller.jpg

Do I know how to make friends, or what?

Mind you, the surrounding skin is a pane in which the scroller is 
embedded, so you are actually looking at a precursor to my next project, 
the "file open" dialog. but if you look closely you'll see the scroller 
inherits its skin from that pane.

 Really, anything cosmetic in Cello is easily overridden, tho scrollers 
are tricky because they are deep things to parameterize: the thumb parts 
are children of the slider, in turn a child of the scroll bar which is a 
child of the scroller.

What you cannot see is that it all works pretty well. That scroller is 
specified as Resizeable, so you can so so and watch the scroll thumbs 
change size on the fly. clicking above or below the thumb now correctlt 
moves just a page. oops, which reminds me, I have to implement the 
feature which says that holding after the click makes the scroller 
scroll by pages until the mouse is released, albeit after waiting 
double-click time. this should be easy since I had it working nicely for 
the stepper arrows until god-knows-what-I-did ... just noticed that 
stopped working at some point.

yours truly now knows much more than he did a couple of weeks ago about 
OpenGL. The scroller was about three days work, and I have been working 
furiously the whole time (with breaks for cll, speaking of which, how am 
I gonna break that screen shot to my buddies on the McClim team? <g>)

kt



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