Re: whole rests and clefs

[Werner LEMBERG]

> > Have a look in any full score: A changing clef right before a bar
> > line is not taken into account for computing the horizontal
> > position of a whole rest.  It is only necessary to have a certain
> > horizontal minimum
>
> Is this also the case when all staves except one have a clef-change?

This is a quite artificial, isn't it?  I'm not aware of a real
example.  Let's say that if there are more staves with a clef change,
then the clef is taken into account for the rest position.  (This is a
special variant of case 2 below.)

> In other words: is your point that
>
>   - all multi-rests should be horizontally aligned

Yes -- you mean `vertically aligned' so that all rests in a bar have
the same horizontal position, right?

> or
>
>   - multi-rests should be centered between barlines, instead of
>     closest bar/clef/key-sig/etc.

No.

> I think it should be the first, and without conflicts (eg. for
> single staff music), they should be centered in the available space,
> taking clefs into account.

IMHO the whole rest should be centered over the horizontal interval
where notes can be typeset.  This makes two cases:

 1. The clef needs additional horizontal space:

           |              |
           |  o o o o clef|
           |  | | | |     |
           |  -------     |
           |              |
           |  o           |
           |  |           |
           |              |

              ^     ^

    Here the `C' clef must be taken into account.

 2. The clef doesn't need additional horizontal space:

           |          |
           |  o o o o |
           |  | | | | |
           |  ------- |
           |          |
           |  o   clef|
           |  |       |
           |          |

              ^     ^

    In this case, the clef should be ignored for the computation of
    the whole rest's width.

I think that those rules should be applied to a single staff also:

           |          |
           |  o   clef|
           |  |       |
           |          |

              ^     ^



     Werner