[maemo-developers] [maemo-developers] Sketch like pointer movement detection

[From: Celso Pinto]

Hi everyone,

I'm developing a small app just for kicks and I want to have a drawing
area similar to Sketch. I've followed the GTK tutorial, the Scribble
example part, on how to detect mouse movement and translate that to a
drawing.

The thing is that compared to Scribble, Sketch is really slick because
Scribble fails a lot of movements,probably because drawing to the screen
is expensive, because the pixels only get drawn on screen with big
intervals.

I was just wondering if it is possible to improve pointer motion by
having some other masks besides GDK_POINTER_MOTION_MASK? I've removed
the GDK_POINTER_MOTION_MASK_HINT but it hasn't improved the drawing.

I want to improve on Scribble, so I'm already thinking about
alternatives like queuing all motion events and have a separate thread
doing the drawing bits if that is the only way to have slick motion
detection.

Any insight is really appreciated.

Cheers,
Celso