[Jsynthlib-devel] Enhancements to SysexWidgets??

[Jeff W. <jww...@ya...>]

I have a couple of suggestions making SysexWidgets a
little more flexible. I have often times run into a
situation where the range of values sent by a
ScrollBarWidget or a KnobWidget needs to go from high
to low rather than from low to high.

I wanted to see what would happen if I created a
KnobWidget with the min and max values switched around
(i.e. min =  127 and max = 0) so I tried it. The
SysexSender already appears to handle this correctly
but the ParamModel just sets the value to zero for all
input values.

The way I have handled this in the past was to
subclass ParamModel to handle the high to low range.
How much effort would it take to modify ParamModel to
handle this situation and make subclassing
unnecessary?

Another issue I ran into happened when I attempted to
create a CheckBoxWidget to control the Drive setting
on the V-Amp 2. This is just an on/off setting and a
CheckBoxWidget would be the obvious choice. Apparently
the CheckBoxWidget is hard wired to send only values
of 0 for "off" or 1 for "on". But the Drive setting on
the V-Amp is turned off by any values in the range
0-63 and on by any values in the range 64-127. Both a
0 and a 1 will turn it off. 

To use a CheckBoxWidget for this right now, I would
need to subclass both a ParamModel and a SysexSender.
But if the CheckBoxWidget had another constructor that
accepted custom on and off values, this would not be
necessary.



	
		
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