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device: Add pointer actor getter

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ClutterInputDevice should have a getter method for retrieving the
reactive actor underneath the pointer.
This commit is contained in:
Emmanuele Bassi 2010-01-12 11:53:12 +00:00
parent 25c6ebbb2c
commit 55e4315aa5
3 changed files with 40 additions and 1 deletions
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37
clutter/clutter-input-device.c
View File

@ -391,6 +391,20 @@ clutter_input_device_get_device_coords (ClutterInputDevice *device,
*y = device->current_y;
}
/*
* _clutter_input_device_update:
* @device: a #ClutterInputDevice
*
* Updates the input @device by determining the #ClutterActor underneath the
* pointer's cursor
*
* This function calls _clutter_input_device_set_actor() if needed.
*
* This function only works for #ClutterInputDevice of type
* %CLUTTER_POINTER_DEVICE.
*
* Since: 1.2
*/
ClutterActor *
_clutter_input_device_update (ClutterInputDevice *device)
{
@ -399,9 +413,12 @@ _clutter_input_device_update (ClutterInputDevice *device)
ClutterActor *old_cursor_actor;
gint x, y;
g_return_val_if_fail (device->device_type == CLUTTER_POINTER_DEVICE, NULL);
clutter_input_device_get_device_coords (device, &x, &y);
stage = device->stage;
old_cursor_actor = device->cursor_actor;
new_cursor_actor = _clutter_do_pick (stage, x, y, CLUTTER_PICK_REACTIVE);
@ -421,6 +438,7 @@ _clutter_input_device_update (ClutterInputDevice *device)
? clutter_actor_get_name (new_cursor_actor)
: G_OBJECT_TYPE_NAME (new_cursor_actor));
/* short-circuit here */
if (new_cursor_actor == old_cursor_actor)
return old_cursor_actor;
@ -428,3 +446,22 @@ _clutter_input_device_update (ClutterInputDevice *device)
return device->cursor_actor;
}
/**
* clutter_input_device_get_pointer_actor:
* @device: a #ClutterInputDevice of type %CLUTTER_POINTER_DEVICE
*
* Retrieves the #ClutterActor underneath the pointer of @device
*
* Return value: (transfer none): a pointer to the #ClutterActor or %NULL
*
* Since: 1.2
*/
ClutterActor *
clutter_input_device_get_pointer_actor (ClutterInputDevice *device)
{
g_return_val_if_fail (CLUTTER_IS_INPUT_DEVICE (device), NULL);
g_return_val_if_fail (device->device_type == CLUTTER_POINTER_DEVICE, NULL);
return device->cursor_actor;
}

3
clutter/clutter-input-device.h
View File

@ -28,7 +28,7 @@
#ifndef __CLUTTER_INPUT_DEVICE_H__
#define __CLUTTER_INPUT_DEVICE_H__
#include <glib-object.h>
#include <clutter/clutter-types.h>
G_BEGIN_DECLS
@ -92,6 +92,7 @@ gint clutter_input_device_get_device_id (ClutterInputDevic
void clutter_input_device_get_device_coords (ClutterInputDevice *device,
gint *x,
gint *y);
ClutterActor * clutter_input_device_get_pointer_actor (ClutterInputDevice *device);
G_END_DECLS

1
doc/reference/clutter/clutter-sections.txt
View File

@ -1003,6 +1003,7 @@ clutter_get_input_device_for_id
clutter_input_device_get_device_id
clutter_input_device_get_device_type
clutter_input_device_get_device_coords
clutter_input_device_get_pointer_actor
<SUBSECTION Standard>
CLUTTER_TYPE_INPUT_DEVICE