30 Dec
2009
30 Dec
'09
3:30 p.m.
Am Donnerstag, den 31.12.2009, 05:36 +1100 schrieb Patrick Shirkey:
On 12/31/2009 04:11 AM, James Warden wrote:
Maybe you try it with cairo, instead pango, :-)
Hello Patrick et al,
I ported the ardour "fast meters" from C++ to C. Look into guitarix's code
(GtkFastMeter class). It is a direct translation from gtkmm2ext. I picked it up because it
is very CPU friendly, the algorithm focusing only on the "deltas" from one event
to the next. Hermann took care of the layout and that's what he was talking about when
he mentioned something about the box_expose function.
Ahhh, I was confused by the file name being GtkFastMeter.cpp so didn't
look into it until now.
My only concern before attempting to switch to this class is that maybe
it won't solve the problem I am seeing. Do the notches get overdrawn by
the meters? It looks like they are separately positioned so as to not
have any conflict.
I guess it shouldn't be a problem because the meters in ardour have
notches and levels in the same coords but I don't really want to find
out that it is after going to the trouble of inserting it to my codebase.
I feel like I am basically finished with these meters if I could fix the
memory leak. I'm wondering if it could be a gtk bug that is being picked
up. Maybe it's just that I shouldn't be making so many calls to pango?
:-/
Patrick Shirkey
Boost Hardware Ltd
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