Hi!
I'm writing a Python app (gtimelog) that uses a Gtk.Paned to implement an
optional side pane. I've an action ("win.show-task-pane") bound to a key
(F9) that is implemented as a Gio.PropertyAction linked to the "visible"
property of the Gtk.Box on the right. I also have a Gio.Settings
binding of a setting (org.gtimelog show-task-pane) to the same "visible"
property of the same Gtk.Box (using Gio.SettingsBindFlags.DEFAULT) to
make this choice persistent. In addition, I keep the position of the
Gtk.Paned in gsettings (org.gtimelog task-pane-position) as well and set
it on startup by calling Gtk.Paned.set_position().
The problem is that with Gtk+ 3.20.8, if my application starts with the
task pane hidden and I then press F9 to show it, I get these two
warnings:
(gtimelog:3639): Gtk-WARNING **: Allocating size to 0x1ca4320 without
calling gtk_widget_get_preferred_width/height(). How does the code know the
size to allocate?
(gtimelog:3639): Gtk-WARNING **: Allocating size to GtkBox 0x1a4ba50
without calling gtk_widget_get_preferred_width/height(). How does the code know
the size to allocate?
The first widget (0x1ca4320) is the main window (there's no class name
because it's a class defined in Python). The second widget (0x1a4ba50)
is the Gtk.Box I'm hiding and showing (called "task_pane" in the .ui file).
There are no warnings after that, even if I hide and show the pane
again. There no warnings whatsoever if the Gtk.Box is shown initially
on startup (because gsettings say it should be visible).
What am I doing wrong? How can I make the warning go away?
If you'd like to play with the code, you can do that with
git clone https://github.com/gtimelog/gtimelog
cd gtimelog
make # to compile the gsettings schema
./gtimelog
Regards,
Marius Gedminas
--
But it makes the Linux kernel a bit like a bookstore that started with Greek,
Korean, and Japanese, and was happily organizing their books by character set,
and then added a section for the Latin character set, only to find that people
who can read the Latin character set can still only read a small fraction of
the books that use it, on account of a surprising lack of standardization in
the pronunciation, vocabulary, and grammar.
-- iabervon explains ARM on lwn.net
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