[Rosegarden-bugs] [ rosegarden-Bugs-1026602 ] notation prints full-color; notes never black

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Bugs item #1026602, was opened at 2004-09-12 08:22
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Category: notation
Group: None
Status: Open
Resolution: None
Priority: 8
Submitted By: D. Michael McIntyre (dmmcintyr)
Assigned to: Chris Cannam (cannam)
Summary: notation prints full-color; notes never black

Initial Comment:
Red barlines are printed in gray.  All notes and rests are printed in 
gray.  Staff lines and text elements come out in black. 
 
I don't have a color printer, so I can't quite guess where the colored 
notes are coming from.  They could be blue, or they could be puke 
green.  If I think about it, I'll try on a color printer tomorrow.  If I 
think about it. 
 
Anyway, notation has always been a black and white world.  I can 
see where it *might* be useful to have the ability to print things in 
full color, but it should be optional, and not the default option.  
Since adding a toggle at this stage is firmly in the realm of feature, 
rather than fix, I submit the only reasonable course here and now is 
to force printing to be solid black on white, perhaps leaving the door 
open to permit a color toggle in the future. 
 
How to fix it, I'm not sure.  It seems that what comes out on paper 
is rendered directly from the QCanvas or whatever where the 
notation elements are actually drawn. 
 
If it's possible to do some kind of color depth conversion internally, 
it might not be sufficiently reliable to do so.  When going from 
color/grayscale to undithered 2-bit color, everything on the wrong 
side of the value divide turns white.  I think this means the only way 
to handle is to re-draw the thing internally without any color other 
than black prior to printing.  Think, but really have little clue how any 
of that works. 

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