Re: [Jsynthlib-devel] Complex sysex parameters

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

--- federico <xa...@in...> wrote:
> how can i make 4 different widgets that manipulate
> the same param_number?

You can subclass a ParamModel and then make all four
widgets use the subclassed ParamModel.

Check out the AlesisDM5.BitModel. This is a ParamModel
subclass that manipulates the individual bits of a
single sysex byte. There is one additional parameter
on the constructor, which is a bitmask. There are a
bunch of public static final int definitions at the
beginning. These are masks provided for the DM5. You
specify one of these masks when you create the
BitModel on your widget. You can copy this code and
modify the masks for your own purposes. 

> please consider that if go to change octave range, i
> should mask other 
> bits, like this:
>  new_val = (old_val & 0x28) | (oct_range & 0x03)
> to avoid re-setting to zero saw/pulse/chorus

This might be a little more complicated to answer. You
could just use the BitModel subclass with a mask of
00000111 and then have your widget pass values of 1,
2, or 4. The easy way would be to use a
ScrollBarLookupWidget or a KnobLookupWidget but that
would limit you to those types of widgets. If you
wanted to use a ComboBoxWidget (which I'm guessing
would be a more appropriate choice), then you would
have to further subclass BitModel to change the value
0 to 1, 1 to 2, and 2 to 4.


	
		
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