[news.eclipse.platform.swt] Re: Use slider/scale to select extended rang

[Stefan Langer <eclipse@xxxxxxxxxxxxxxxxxxxx>]

Not sure this will work but you can try...

Try adding a PaintListener to the scale and paint the shaded region on 
top of it. You have to make sure that your painter is called after the 
component is rendered. (Not sure how you can achieve this but maybe 
somebody else does!)
The trick is to know where to start drawing and where to stop. Look into 
the scale component to see how you can determine the points.

Hope that helps and report back if you get it to work

Stefan

Ian Mayo wrote:
> Hi all.
> I'm using a scale to allow user-control of time.  It works just fine.
>
> I'd like to introduce a user control/controls to allow users to select a 
> period of time (start/stop points).
>
> I picture a UI whereby the user holds down the shift-key and drags the 
> scale, with the selected portion of the scale appearing shaded/highlighted.
>
> This functionality doesn't appear to be in the API, and the scale widget 
> isn't meant to be sub-classed (wherein I could implement my chosen 
> behaviour - even though I'd rather not...).
>
> Can anybody provide me with any pointers?
>
> Cheers,
> Ian.