Re: Issue using the "gtk_widget_get_allocated_height" instruction

[Luca Bacci <luca bacci982 gmail com>]

Hi Sébastien!
It's not simple, but you may try with combinations of

GtkStyleContext *style = gtk_widget_get_style_context(widget);
GValue value = G_VALUE_INIT;
gtk_style_context_get_style_property(style, "prop-name", &value);
//or
gtk_style_context_get_property(style, "prop-name", &value);
/*
...
*/
g_value_unset(&value) //free memory

Unfortunately, that's all I can say, I'm not expert in this area.
Probably it's going to be rather complicated.

Luca

Il giorno lun 26 nov 2018 alle ore 16:34 Sébastien Le Roux <
sebastien leroux ipcms unistra fr> ha scritto:

> Le 24/11/2018 à 15:59, Luca Bacci a écrit :
>
> Probably it's a consequence of this work for porting GtkMenuBar to use css
> gadgets internally:
> https://gitlab.gnome.org/GNOME/gtk/commit/700286c6
>
> You should be able to get the appropriate size if you add menu items to
> the bar, i.e. as long as the
> menubar is not empty you get the appropriate height with
> gtk_widget_get_allocated_height().
>
> Luca
>
> Thank you very much for your reply, it works nicely with the "invisible"
> item.
>
> I do have in my code objects (GtkColorBar, GtkButtton) for which I created
> css
> properties my self to match some specifics using:
>
>
> void provide_gtk_css (gchar * css)
> {
>   GtkCssProvider * provider = gtk_css_provider_new ();
>   gtk_css_provider_load_from_data (provider, css, -1, NULL);
>   gtk_style_context_add_provider_for_screen (gdk_screen_get_default (),
>                                              GTK_STYLE_PROVIDER(provider),
>                                              GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
>   g_object_unref (provider);
> }
>
>
> About what I understand this is now automatic (somewhat) for many (all ?)
> widgets,
>
> Out of curiosity do you think that there is anyway to get that heigh value
> from
> a query to the css properties of that menu bar ? is there anyway to send
> query to the css ?
>
>
> Best
>
>
> Sébastien
>
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> Ingénieur de Recherche CNRS
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