Thanks that was fast and it works now very well, color picker seams even faster to release on my system, and I can access all option and Ui after color pick now.

And guess what ? it also look like it solve the video recording problem with the remaining color picker display. ( Griatch will be happy too as he experienced the same into his video tutorials ). I tested only on a 20min speedpainting temp video recording and no display problem.

Thanks again

There is a problem with that commit: it adds this main_widget.set_sensitive() call that is causing a full canvas redraw. When working with a big image fullscreen this takes too much time; the color picker is something that must respond very fast. You can also enable “visualize rendering” in the debug menu to see the effect, or just work on a big image fullscreen and zoomed out.

I just checked GTK source: set_sensitive() always does queue_draw() if the widget is visible and mapped, so we better don't call it.

Confirmed here, just as described in David's explanation in comment 1. Compiz, python-gtk2 2.21.0-0ubuntu1 and a Wacom Bamboo MTE-450A.

Additionally if you put the pen down on the gtk colour triangle, it updates the "last colour painted with" box. Panning the canvas right to reveal where you just clicked reveals why - there's a dollop of the colour you just chose off the canvas right there under your last pen stroke D:

This feels like like a pointer grab issue with the colour picker, though that claims to be leaving "picker state" and pointer_ungrab()-ing like it should even with extended input devices.

From IRC

<achadwick> I can't reproduce it here :/
<deevad> oh, too bad
[...]
<achadwick> I'm trying: 1. paint colours, 2. use ctrl+left mouse to pick, 3. while ctrl is still pressed & left button pressed hover the cursor over the GTK colour triangle (goes crazy :) 4. release either ctrl or left mouse button.
<deevad> achadwick: I will redetail it, 2 min to write it
<achadwick> It goes crazy because it's drawing a black circle and then averaging that colour, which changes the colour and round we go again...! But I expect that.
<deevad> 1. Paint color , 2 use Ctrl+stylus nib to select a color release ctrl and stylus 3. try to change color in a docked color triangle , or change option on top menu , or a layer in a docked Layer panel ... you can't
<deevad> with mouse = no problem
<deevad> with stylus
<achadwick> Hmm. Admittedly I'm using a mouse here, and I won't be able to try with a stylus until I get home from work.