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
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
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
Hi all,
I am having trouble understanding gtk3/gdk/cairo interaction and thus
developing a usable model for some large drawing applications I am porting
from X11. I am currently working mostly on CentOS 6 with self-installed
gtk3 3.4.0, gdk-pixbuf-2.26.0 and cairo 1.12.0 packages. Obviously I
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 r...@soest.hawaii.edu wrote:
presumably this includes the GtkDrawingArea widget as
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
