On Thu, 12 Apr 2012, Simon Feltman wrote:
You should be able to just fill the delta regions between the cursor position
changes right? Basically a backwards "L" shape if you're dragging upper-left
to lower-right. You would need to do two rect copies (or two calls
to gtk_widget_queue_draw_area f
You should be able to just fill the delta regions between the cursor
position changes right? Basically a backwards "L" shape if you're dragging
upper-left to lower-right. You would need to do two rect copies (or two
calls to gtk_widget_queue_draw_area for each part of the L) as opposed to
one. If i
Hi John and Simon,
OK, experiment complete. Performance for me is very clearly not as good as
Xlib-style XOR when drawing rubberband lines which span a screen-sized
window (which is more or less typical for my apps, unfortunately), but on
the other hand it's not unusable either, just somewha
Hi Simon,
Thanks for your thoughts, I read them after responding to John. Sounds
like my wild guesses about the differences between gtk2 and gtk3 here are
not too horribly wrong. I will read the docs you pointed to and take a
look at the Clutter stuff, after I get some time to do the required
Hi John,
Thanks for your thoughts as always. I think there may be some significant
differences between gtk2 and gtk3 on these points, although this guess is
based almost exclusively on reading documentation at this point as opposed
to actual experience, of which I have about zero. Given the m
In Gtk3, "draw" is used instead of the expose signal and gives you a cairo
context (at least for external api users). This document may
also answer some of the questions:
http://developer.gnome.org/gtk3/3.4/chap-drawing-model.html
I wouldn't expect being able to use the cairo context you are passe
Hi Roger,
You should do all drawing in the expose handler and nowhere else.
Don't do any direct drawing in your data hander, instead update your
model and queue an expose event.
On 7 April 2012 02:16, Roger Davis wrote:
> presumably this includes the GtkDrawingArea widget as well. If there is
>
