Re: [Audacity-devel] Keyboard shortcuts for blind users

[Markus M. <me...@me...>]

Cool! Just tried it out and it works very well. I imagine that's a great
step towards making 1.3 fully accessible.

Just a question: Is there a way to set the project rate via the keyboard
yet? Any other functions that are not yet exposed to the keyboard?


Markus

Am Fre, den 31.12.2004 schrieb smu...@ob... um 5:40:
> I had a 3-day car ride over the holidays, and used part of the time to add some
> primitive keyboard functionality to Audacity.  These were done before some of
> great suggestions appeared here, so they do not take them into account.  Note
> that any keyboard shortcuts can be changed in the preferences, and so it would
> be good (once test builds get made) for interested parties to try out different
> keyboard combos and find a nice useable set.
> 
> Overview:  These changes mainly add ways to interact with track objects using
> the keyboard alone.  They are based on a 'cycle-tracks' function that changes
> the selected track, using the tab key.  Only a single track will be selected;
> the first track after the first currently-selected track.  The keyboard
> shortcuts will operate on the first selected track.   
> 
> Technical details:  
> The current TrackPanel is just a big drawing palette where things are drawn, and
> mouse interactions are calculated programmatically.  A dream for the future is
> to have these object-oriented, managing and drawing themselves, but that gets
> increasingly difficult as the application gets more complex.  So, currently
> there are functions that operate the controls based essentially on the position
> of mouse clicks on the trackpanel.  This made keyboard-based interactions
> difficult to hook into these functions, because they were tied intimately to the
> location of the mouse.  
> 
> I added a new set of trackpanel methods that take a track as an argument,
> perhaps eventually ending up as methods of the  track-based classes.  Where
> possible and not too difficult, I let made the mouse-based interaction functions
> use these new methods.  Hopefully this gets us a step closer to an eventual
> refactoring that will make trackpanel much cleaner and simpler.
> 
> 
> New changes enhancing keyboard interaction:
> 
> Set Selection:
> 
> Ctrl-R: Set right selection.  When playing/recording, sets right
>         selection to indicator position.  When not playing/recording,
>         opens a dialog in which time of selection can be entered manually.
> 
> Ctrl-L: Set left selection.  When playing/recording, sets left
>         selection to indicator position.  When not playing/recording,
>         opens a dialog in which time of selection can be entered manually.
> 
> 
> Tab:   Cycles tracks.  Finds first selected track and selects 
>        first track that follows it, deselecting all other tracks.
> 
> Accessing track label controls:  
>       The following keyboard combos operate controls on the first selected
>       track.
> 
> Shift-M: Opens track menu
> Shift-U: mUtes track
> Shift-P: Opens dialog to set pan
> Shift-G: Opens dialog to set gain
> Shift-C: Closes track
> 
> 
>    
> 
> 
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