Re: [Rosegarden-devel] The Curse of the Audio Preview Drawing

[D. M. 'S. M. <ros...@gm...>]

On Thursday 08 December 2005 06:11 am, ca...@al... wrote:

> So, attached is a patch that reduces TileWidth to a maximum of the screen
> size.  This works fine for me; I can load the long audio files I
> described before and turn the zoom up to 2000% and I still see the
> entire preview.

Same here with my own testfile, G's latest and your patch.

I notice a couple bits of weird.

1) the preview doesn't seem to be centered in the rectangle anymore.  The 
center line is at least one pixel too high, and maybe more.  Probably a +1 
kind of error just introduced, I would guess.

2) at 2000% I'm getting this weird thing on all these one bar audio segments.  
They always appeared to be lined up evenly (and should have been "snapped" so 
they *should* be lined up evenly) yet they're showing up overlapping on one 
side with a little gap on the other.  Especially evident at 2000%.  I thought 
this was just a scrolling artifact at first, until I realized I could use the 
little clicky arrows to scroll one notch at a time without changing the way 
the gap is displayed.

See attached.  I'm not sure that #2 is a real problem, but it's certainly 
unexpected.  They're not mating up with the bar lines, and these gaps are 
interspersed seemingly at random.  Maybe this is just minute user error on my 
part, and I never noticed it showing up at normal zooms.  (I don't generally 
use the zoom for anything.  Frankly, zooming in only one direction is of 
limited usefulness anyway.  What good is it to stretch out a sine wave for 
three pages when it's still only six pixels tall at the highest peak?)

Anyway, this definitely cures the invisible preview problem, and all those X 
errors.

-- 
D. Michael 'Silvan' McIntyre  ----   Silvan <dmm...@us...>
Linux fanatic, and certified Geek;  registered Linux user #243621

Author of Rosegarden Companion http://rosegarden.sourceforge.net/tutorial/