brl/mutter
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

backend: Add meta_backend_update_last_device()

Browse Source 
This function can be used to trigger changes depending on the device type
that is currently emitting the events. So far, it is used to switch cursor
visibility on/off on touchscreen interaction.

A "last-device-updated" signal has also been added, in order allow hooking
other behavior changes (eg. OSK) when the last device changes.

https://bugzilla.gnome.org/show_bug.cgi?id=712775
This commit is contained in:
Carlos Garnacho 2015-02-11 14:59:21 +01:00
parent 67a30b7a89
commit 9e3bac0237
2 changed files with 50 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/backends/meta-backend-private.h
View File

@ -50,6 +50,7 @@ struct _MetaBackend
GObject parent;
GHashTable *device_monitors;
gint current_device_id;
};
struct _MetaBackendClass
@ -106,4 +107,7 @@ void meta_backend_warp_pointer (MetaBackend *backend,
struct xkb_keymap * meta_backend_get_keymap (MetaBackend *backend);
void meta_backend_update_last_device (MetaBackend *backend,
int device_id);
#endif /* META_BACKEND_PRIVATE_H */

46
src/backends/meta-backend.c
View File

@ -29,6 +29,7 @@
#include "meta-input-settings-private.h"
#include "backends/x11/meta-backend-x11.h"
#include "meta-cursor-tracker-private.h"
#include "meta-stage.h"
#ifdef HAVE_NATIVE_BACKEND
@ -268,6 +269,12 @@ meta_backend_class_init (MetaBackendClass *klass)
0,
NULL, NULL, NULL,
G_TYPE_NONE, 1, G_TYPE_UINT);
g_signal_new ("last-device-changed",
G_TYPE_FROM_CLASS (object_class),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL, NULL,
G_TYPE_NONE, 1, G_TYPE_INT);
}
static void
@ -388,6 +395,45 @@ meta_backend_get_stage (MetaBackend *backend)
return priv->stage;
}
void
meta_backend_update_last_device (MetaBackend *backend,
int device_id)
{
ClutterInputDeviceType device_type;
MetaCursorTracker *cursor_tracker;
ClutterDeviceManager *manager;
ClutterInputDevice *device;
if (backend->current_device_id == device_id)
return;
manager = clutter_device_manager_get_default ();
device = clutter_device_manager_get_device (manager, device_id);
if (!device ||
clutter_input_device_get_device_mode (device) == CLUTTER_INPUT_MODE_MASTER)
return;
device_type = clutter_input_device_get_device_type (device);
cursor_tracker = meta_cursor_tracker_get_for_screen (NULL);
backend->current_device_id = device_id;
g_signal_emit_by_name (backend, "last-device-changed", device_id);
if (device_type == CLUTTER_KEYBOARD_DEVICE)
return;
switch (device_type)
{
case CLUTTER_TOUCHSCREEN_DEVICE:
meta_cursor_tracker_set_pointer_visible (cursor_tracker, FALSE);
break;
default:
meta_cursor_tracker_set_pointer_visible (cursor_tracker, TRUE);
break;
}
}
static GType
get_backend_type (void)
{