gtk4

Function locale_direction

Source 
pub fn locale_direction() -> TextDirection
Expand description

Gets the direction of the current locale.

This is the expected reading direction for text and UI.

This function depends on the current locale being set with setlocale() and will default to setting the GTK_TEXT_DIR_LTR direction otherwise. GTK_TEXT_DIR_NONE will never be returned.

GTK sets the default text direction according to the locale during init(), and you should normally use WidgetExt::direction() or Widget::default_direction() to obtain the current direction.

This function is only needed rare cases when the locale is changed after GTK has already been initialized. In this case, you can use it to update the default text direction as follows:

⚠️ The following code is in c ⚠️

#include <locale.h>

static void
update_locale (const char *new_locale)
{
  setlocale (LC_ALL, new_locale);
  gtk_widget_set_default_direction (gtk_get_locale_direction ());
}

§Returns

the direction of the current locale