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GtkMenuButton: Avoid direct button access

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We were getting ourselves in trouble by casting touch events
to GdkEventButton and poking directly at their internals. Instead,
use GdkEvent API to get what we need.

This fixes a crash when using the gear menu in epiphany with
touch. The same crash also occurred in testmenubutton.
This commit is contained in:
Matthias Clasen 2015-06-15 18:54:13 -04:00
parent 9fc19b5a26
commit f99375f91e
1 changed files with 22 additions and 8 deletions
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28
gtk/gtkmenubutton.c
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@ -373,10 +373,13 @@ menu_position_side_func (GtkMenu *menu,
static void
popup_menu (GtkMenuButton *menu_button,
GdkEventButton *event)
GdkEvent *event)
{
GtkMenuButtonPrivate *priv = menu_button->priv;
GtkMenuPositionFunc func;
GdkDevice *device;
guint button;
guint32 time;
if (priv->func)
priv->func (priv->user_data);
@ -395,14 +398,27 @@ popup_menu (GtkMenuButton *menu_button,
break;
}
if (event)
{
device = gdk_event_get_device (event);
gdk_event_get_button (event, &button);
time = gdk_event_get_time (event);
}
else
{
device = NULL;
button = 0;
time = gtk_get_current_event_time ();
}
gtk_menu_popup_for_device (GTK_MENU (priv->menu),
event ? event->device : NULL,
device,
NULL, NULL,
func,
GTK_WIDGET (menu_button),
NULL,
event ? event->button : 0,
event ? event->time : gtk_get_current_event_time ());
button,
time);
}
static void
@ -418,9 +434,7 @@ gtk_menu_button_clicked (GtkButton *button)
event = gtk_get_current_event ();
popup_menu (menu_button,
(event && event->type != GDK_BUTTON_RELEASE) ?
(GdkEventButton *) event : NULL);
popup_menu (menu_button, event);
if (!event ||
event->type == GDK_KEY_PRESS ||