canvas retune() (was Re: [Rosegarden-devel] segmentcanvas_rework branch)

[Guillaume L. <gla...@te...>]

BTW, just out of curiosity I tried retuning the canvas. Seems that with a 
chunk size of 64 or, even better, 128, the zoom is much more responsive. In 
fact zooming to 2000% happens just as fast as to 150% (I tested using a 980 
bars long, 4 track piece). No other trade-offs to note, so I committed the 
change. I suggest we put it in 0.9.7.

-- 
						Guillaume.
						http://www.telegraph-road.org