Re: range inversion

[Jay Cox <jaycox gimp org>]

Havoc Pennington wrote:
> 
> Hi,
> 
> To fix http://bugzilla.gnome.org/show_bug.cgi?id=50806
> I'm just adding a simple gtk_range_set_inverted() call.
> If anyone has thoughts on that, speak up.
> 

It seems to me that inverted is only one of many mappings that
would be usefull in the range widget.  There are many instances
where I would find a range widget that used a log or sqrt mapping
for the slider position usefull.

I would propose the function instead:

gtk_range_set_mapping(GtkRange *, GtkMappingType);

where GtkMappingType is one of:

GTK_MAPPING_NORMAL
GTK_MAPPING_INVERSE
GTK_MAPPING_LOG
GTK_MAPPING_INVERSE_LOG
GTK_MAPPING_SQRT
GTK_MAPPING_INVERSE_SQRT


I am probably asking for too much from the range widget (or more
accurately the scale widget), but I would also like the widget
to display some indication when it does not have a linear mapping.
Perhaps a triangular slider?

<gratuitous_feature_request>
Wouldn't it be nice if GtkRange widgets could display a marker
showing the original position of the slider while draging?
</gratuitous_feature_request>


Thanks,
Jay Cox
jaycox gimp org