Mac Aqua: Dragged-off toolbars are borderless, blank white windows

[Zachary Waldowski]

More adventures from Aqua-land in my native Quartz build of Inkscape on Mac OS X 10.6.

Draggable toolbars can be "broken off" into separate floating windows. On Mac X11, these appear as tiny bordered HUD-like windows. In a Quartz build of GTK/Inkscape, these windows appear as intended (without borders) and float on top, but two major problems occur: broken-off toolbars are blank, white windows (they still have their contents; clever dragging can bring the broken toolbar back into the main window) that appear in the system window switcher.

I get this creepy sinking feeling it might have to do with GTK; I'm reporting it here to locate and identify the problem and maybe find the criteria for being reported upstream.

[Zachary Waldowski (zwaldowski)]

A better comparison with the Quartz problem.

[Zachary Waldowski (zwaldowski)]

Appearing in the window switcher/Exposé.

[su_v (suv-lp)]

Reproduced with Inkscape 0.48+devel r10101 on OS X 10.5.8 (i386),
gtk2 @2.22.1_1+no_x11+quartz

Likely upstream issue in Gtk+/Quartz - same happens with detachable toolbars in Bluefish 2.0.3 [1] (tested with official DMG [2] which - AFAICT - has been built and packaged using gtk-osx (jhbuild) scripts).

[1] <http://bluefish.openoffice.nl/>
[1] <http://www.bennewitz.com/bluefish/stable/binaries/macosx/>

[su_v (suv-lp)]

Does anyone know if detached toolbars are rendered "in a non-main thread"?

Possibly related upstream issue (at least from the description in the bug summary:
«Only white squares appear when all rendering is done in a non-main thread. In
my test, gdk_init and all gdk/drawing functions are done in a single thread.
Windows (the white squares) can be resized, and the white squares change size
accordingly, but nothing (including the window title/decoration) is rendered.
The same code runs perfectly on linux and windows.»):

606378 – gdk doesn't handle non-main thread rendering on Quartz
<https://bugzilla.gnome.org/show_bug.cgi?id=606378>

[su_v (suv-lp)]

> Reproduced with Inkscape 0.48+devel r10101 on OS X 10.5.8 (i386),
> gtk2 @2.22.1_1+no_x11+quartz

Still present with Inkscape 0.48.x r9884 and Inkscape 0.48+devel r10992 on OS X 10.5.8 (i386),
gtk2 @2.24.10_0+no_x11+quartz

[Alex Valavanis (valavanisalex)]

Tear-off toolbars are no longer provided since lp:inkscape r12027 because the GtkHandleBox widget is now deprecated (see bug #1096350).