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clutter: Add clutter_event_get_pad_event_details()

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This function extracts pad event information, and more importantly
exposes it for gobject introspection.

https://bugzilla.gnome.org/show_bug.cgi?id=782033
This commit is contained in:
Carlos Garnacho 2017-07-14 21:17:46 +02:00
parent 5d7b94abb8
commit 81dd9aa1da
2 changed files with 64 additions and 0 deletions
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58
clutter/clutter/clutter-event.c
View File

@ -2179,3 +2179,61 @@ clutter_event_get_mode_group (const ClutterEvent *event)
return 0;
}
}
/**
* clutter_event_get_pad_event_details:
* @event: a pad event
* @number: (out) (optional): ring/strip/button number
* @mode: (out) (optional): pad mode as per the event
* @value: (out) (optional): event axis value
*
* Returns the details of a pad event.
*
* Returns: #TRUE if event details could be obtained
**/
gboolean
clutter_event_get_pad_event_details (const ClutterEvent *event,
guint *number,
guint *mode,
gdouble *value)
{
guint n, m;
gdouble v;
g_return_val_if_fail (event != NULL, FALSE);
g_return_val_if_fail (event->type == CLUTTER_PAD_BUTTON_PRESS ||
event->type == CLUTTER_PAD_BUTTON_RELEASE ||
event->type == CLUTTER_PAD_RING ||
event->type == CLUTTER_PAD_STRIP, FALSE);
switch (event->type)
{
case CLUTTER_PAD_BUTTON_PRESS:
case CLUTTER_PAD_BUTTON_RELEASE:
n = event->pad_button.button;
m = event->pad_button.mode;
v = 0.0;
break;
case CLUTTER_PAD_RING:
n = event->pad_ring.ring_number;
m = event->pad_ring.mode;
v = event->pad_ring.angle;
break;
case CLUTTER_PAD_STRIP:
n = event->pad_strip.strip_number;
m = event->pad_strip.mode;
v = event->pad_strip.value;
break;
default:
return FALSE;
}
if (number)
*number = n;
if (mode)
*mode = m;
if (value)
*value = v;
return TRUE;
}

6
clutter/clutter/clutter-event.h
View File

@ -778,6 +778,12 @@ ClutterScrollFinishFlags clutter_event_get_scroll_finish_flags (const Clut
CLUTTER_AVAILABLE_IN_ALL
guint clutter_event_get_mode_group (const ClutterEvent *event);
CLUTTER_AVAILABLE_IN_MUTTER
gboolean clutter_event_get_pad_event_details (const ClutterEvent *event,
guint *number,
guint *mode,
gdouble *value);
G_END_DECLS