[Thunar-dev] ThunarDesktopView managing multiple GdkScreens

[Brian J. Tarricone]

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Benedikt Meurer wrote:
> Brian J. Tarricone wrote:
>
>>In this case, it makes more sense to me - rather, it's just overall much
>>easier - to derive ThunarDesktopView from GtkWindow instead of
>>GtkWidget.  Setting up the window requires a bit of work that's pretty
>>much completely done for you with GtkWindow, though I suppose there is a
>>bit of overhead.  What do you think?
> 
> I don't think GtkWindow offers any advantage here, because you'll have 
> to do custom create and size handling anyways. I don't see anything that 
> GtkWindow offers over GtkWidget that is required for desktop windows. 
> Maybe I'm missing something?

The problem I keep running into is that GtkWindow does some things like:

GTK_PRIVATE_SET_FLAG(widget, GTK_ANCHORED);

which is defined in gtk/gtkprivate.h.  If you don't do this step, when
you calll gtk_widget_show() on the ThunarDesktopView, you get a failure
from gtk:

Gtk-CRITICAL **: gtk_widget_realize: assertion `GTK_WIDGET_ANCHORED
(widget) || GTK_IS_INVISIBLE (widget)' failed

Calling gtk_widget_set_parent_window() (using the root window) doesn't
seem to help.  Perhaps it's possible to get around this by overriding
gtk_widget_show(), but my guess would be no, since this check happens in
gtk_widget_realize().  Maybe calling stuff in gtk/gtkprivate.h is fine,
but I'm a bit wary of relying on something called 'private'.

Anyway, I'll play around with it a bit more and see if I can't figure
out a way to make it work without doing icky things.  Poring over the
GtkWindow source will probably help ^_^.

	-brian

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