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gdk_event_get_device(): Fallback to core pointer/keyboard.

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Events could be injected by third party code, which could not have a
GdkDevice set for newer GdkEvent types holding a GdkDevice. This
function will now fallback to core pointer/keyboard, plus issuing
a warning about the problem.
This commit is contained in:
Carlos Garnacho 2010-06-04 17:06:57 +02:00
parent 385f83ff4a
commit cd76d995eb
1 changed files with 45 additions and 0 deletions
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45
gdk/gdkevents.c
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@ -1005,6 +1005,51 @@ gdk_event_get_device (const GdkEvent *event)
case GDK_PROXIMITY_IN:
case GDK_PROXIMITY_OUT:
return event->proximity.device;
default:
break;
}
/* Fallback if event has no device set */
switch (event->type)
{
case GDK_MOTION_NOTIFY:
case GDK_BUTTON_PRESS:
case GDK_2BUTTON_PRESS:
case GDK_3BUTTON_PRESS:
case GDK_BUTTON_RELEASE:
case GDK_ENTER_NOTIFY:
case GDK_LEAVE_NOTIFY:
case GDK_FOCUS_CHANGE:
case GDK_PROXIMITY_IN:
case GDK_PROXIMITY_OUT:
case GDK_DRAG_ENTER:
case GDK_DRAG_LEAVE:
case GDK_DRAG_MOTION:
case GDK_DRAG_STATUS:
case GDK_DROP_START:
case GDK_DROP_FINISHED:
case GDK_SCROLL:
case GDK_GRAB_BROKEN:
case GDK_KEY_PRESS:
case GDK_KEY_RELEASE:
{
GdkDisplay *display;
GdkDevice *core_pointer;
g_warning ("Event with type %d not holding a GdkDevice. "
"It is most likely synthesized outside Gdk/GTK+\n",
event->type);
display = gdk_drawable_get_display (event->any.window);
core_pointer = gdk_display_get_core_pointer (display);
if (event->type == GDK_KEY_PRESS ||
event->type == GDK_KEY_RELEASE)
return gdk_device_get_associated_device (core_pointer);
else
return core_pointer;
}
break;
default:
return NULL;
}