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accel group: Make gtk_accelerator_get_default_mod_mask more lenient

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Make this function harmless to call without an open display connection.
This happens during gobject introspection, which instantiates GTK+
types without calling gtk_init.
This commit is contained in:
Matthias Clasen
2015-08-29 12:23:18 -04:00
parent e6b3805c27
commit b371fb09fb
1 changed files with 22 additions and 9 deletions
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31
gtk/gtkaccelgroup.c
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@ -1719,11 +1719,12 @@ gtk_accelerator_get_label (guint accelerator_key,
* @default_mod_mask: accelerator modifier mask
*
* Sets the modifiers that will be considered significant for keyboard
* accelerators. The default mod mask is #GDK_CONTROL_MASK |
* #GDK_SHIFT_MASK | #GDK_MOD1_MASK | #GDK_SUPER_MASK |
* #GDK_HYPER_MASK | #GDK_META_MASK, that is, Control, Shift, Alt,
* Super, Hyper and Meta. Other modifiers will by default be ignored
* by #GtkAccelGroup.
* accelerators. The default mod mask depends on the GDK backend in use,
* but will typically include #GDK_CONTROL_MASK | #GDK_SHIFT_MASK |
* #GDK_MOD1_MASK | #GDK_SUPER_MASK | #GDK_HYPER_MASK | #GDK_META_MASK.
* In other words, Control, Shift, Alt, Super, Hyper and Meta. Other
* modifiers will by default be ignored by #GtkAccelGroup.
*
* You must include at least the three modifiers Control, Shift
* and Alt in any value you pass to this function.
*
@ -1740,7 +1741,10 @@ gtk_accelerator_set_default_mod_mask (GdkModifierType default_mod_mask)
/**
* gtk_accelerator_get_default_mod_mask:
*
* Gets the value set by gtk_accelerator_set_default_mod_mask().
* Gets the modifier mask.
*
* The modifier mask determines which modifiers are considered significant
* for keyboard accelerators. See gtk_accelerator_set_default_mod_mask().
*
* Returns: the default accelerator modifier mask
*/
@ -1748,9 +1752,18 @@ GdkModifierType
gtk_accelerator_get_default_mod_mask (void)
{
if (!default_accel_mod_mask)
default_accel_mod_mask =
gdk_keymap_get_modifier_mask (gdk_keymap_get_default (),
GDK_MODIFIER_INTENT_DEFAULT_MOD_MASK);
{
GdkDisplay *display;
display = gdk_display_get_default ();
if (!display)
return GDK_CONTROL_MASK | GDK_SHIFT_MASK | GDK_MOD1_MASK;
default_accel_mod_mask =
gdk_keymap_get_modifier_mask (gdk_keymap_get_for_display (display),
GDK_MODIFIER_INTENT_DEFAULT_MOD_MASK);
}
return default_accel_mod_mask;
}