Re: [jazzplusplus-devel] Selection

[Dave F. <dav...@co...>]

On Wednesday 31 March 2004 12:43 pm, Joakim Verona wrote:
> It used to be that drawing occured in the event listeners, which really
> is a no-no,
> and led to all sorts of gui bugs in the pre-port code base. Im shure
> theres plenty of these problems
> around still.   But I digress... i hope I answered your question!

The dialog explains everything! :)  So, when you select, the GUI sets the 
filter to the events you selected.  Then, when you copy or cut, the GUI uses 
the filter to copy or cut the events from the track into the clipboard.  Then 
when you paste, it just copies events from the clipboard into the track.  
Hurray!  ;)

So I'm thinking we should keep the Filter around but put it in jppProject 
rather than have it hanging around as a global variable.

Dave

> /Joakim
>
> Dave Fancella wrote:
> >All,
> >
> >Ok, now I'm pretty thoroughly confused, again.  :(  I'm working on making
> >selection and the clipboard exist inside jppProject instead of inside the
> >GUI.  Here's what I've got:
> >
> >With an empty project, I can select events.  There aren't any to select. 
> > When I load a midi file, selection doesn't work anymore at all.  (I may
> > have broken that, sorry!)
> >
> >I'm thoroughly confused for several reasons.  First, I'm not very good at
> >graphics/GUI stuff when I have to build my own, so I use stock widgets
> > pretty much all the time.  :)  So I don't understand the drawing code all
> > that well, well, not at all, really.  Second, the selection code is
> > extremely convoluted.  I've narrowed it down, I think.
> >
> >It looks like when you're done selecting, jazz uses a Filter object to
> > store the selection.  I feel like Marty McFly, but what the hell's a
> > Filter?  ;) So when you do have a selection with real events in it, do
> > the events get copied to the filter object, or does the filter object
> > just store locations of those events?
> >
> >Dave
>
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