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b2c905ff50
The marshallers we use for the signals are declared in a private header, and it stands to reason that they should also be hidden in the shared object by using the common '_' prefix. We are also using some direct g_cclosure_marshal_* symbol from GLib, instead of consistently use the clutter_marshal_* symbol.
402 lines
12 KiB
C
402 lines
12 KiB
C
/*
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* Clutter.
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*
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* An OpenGL based 'interactive canvas' library.
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*
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* Copyright (C) 2009 Intel Corp.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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* Author: Emmanuele Bassi <ebassi@linux.intel.com>
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*/
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/**
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* SECTION:clutter-device-manager
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* @short_description: Maintains the list of input devices
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*
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* #ClutterDeviceManager is a singleton object, owned by Clutter, which
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* maintains the list of #ClutterInputDevice<!-- -->s.
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*
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* Depending on the backend used by Clutter it is possible to use the
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* #ClutterDeviceManager::device-added and
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* #ClutterDeviceManager::device-removed to monitor addition and removal
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* of devices.
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*
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* #ClutterDeviceManager is available since Clutter 1.2
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "clutter-debug.h"
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#include "clutter-device-manager.h"
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#include "clutter-enum-types.h"
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#include "clutter-marshal.h"
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#include "clutter-private.h"
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#define CLUTTER_DEVICE_MANAGER_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), CLUTTER_TYPE_DEVICE_MANAGER, ClutterDeviceManagerPrivate))
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struct _ClutterDeviceManagerPrivate
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{
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/* back-pointer to the backend */
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ClutterBackend *backend;
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};
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enum
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{
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PROP_0,
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PROP_BACKEND
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};
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enum
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{
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DEVICE_ADDED,
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DEVICE_REMOVED,
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LAST_SIGNAL
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};
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static guint manager_signals[LAST_SIGNAL] = { 0, };
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G_DEFINE_ABSTRACT_TYPE (ClutterDeviceManager,
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clutter_device_manager,
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G_TYPE_OBJECT);
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static void
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clutter_device_manager_set_property (GObject *gobject,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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ClutterDeviceManagerPrivate *priv = CLUTTER_DEVICE_MANAGER (gobject)->priv;
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switch (prop_id)
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{
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case PROP_BACKEND:
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priv->backend = g_value_get_object (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
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}
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}
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static void
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clutter_device_manager_get_property (GObject *gobject,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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ClutterDeviceManagerPrivate *priv = CLUTTER_DEVICE_MANAGER (gobject)->priv;
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switch (prop_id)
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{
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case PROP_BACKEND:
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g_value_set_object (value, priv->backend);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
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}
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}
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static void
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clutter_device_manager_class_init (ClutterDeviceManagerClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GParamSpec *pspec;
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g_type_class_add_private (klass, sizeof (ClutterDeviceManagerPrivate));
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gobject_class->set_property = clutter_device_manager_set_property;
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gobject_class->get_property = clutter_device_manager_get_property;
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pspec = g_param_spec_object ("backend",
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"Backend",
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"The ClutterBackend of the device manager",
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CLUTTER_TYPE_BACKEND,
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CLUTTER_PARAM_READWRITE |
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G_PARAM_CONSTRUCT_ONLY);
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g_object_class_install_property (gobject_class, PROP_BACKEND, pspec);
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/**
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* ClutterDeviceManager::device-added:
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* @manager: the #ClutterDeviceManager that emitted the signal
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* @device: the newly added #ClutterInputDevice
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*
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* The ::device-added signal is emitted each time a device has been
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* added to the #ClutterDeviceManager
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*
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* Since: 1.2
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*/
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manager_signals[DEVICE_ADDED] =
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g_signal_new (I_("device-added"),
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G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_LAST,
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0,
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NULL, NULL,
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_clutter_marshal_VOID__OBJECT,
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G_TYPE_NONE, 1,
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CLUTTER_TYPE_INPUT_DEVICE);
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/**
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* ClutterDeviceManager::device-removed:
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* @manager: the #ClutterDeviceManager that emitted the signal
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* @device: the removed #ClutterInputDevice
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*
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* The ::device-removed signal is emitted each time a device has been
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* removed from the #ClutterDeviceManager
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*
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* Since: 1.2
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*/
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manager_signals[DEVICE_REMOVED] =
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g_signal_new (I_("device-removed"),
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G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_LAST,
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0,
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NULL, NULL,
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_clutter_marshal_VOID__OBJECT,
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G_TYPE_NONE, 1,
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CLUTTER_TYPE_INPUT_DEVICE);
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}
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static void
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clutter_device_manager_init (ClutterDeviceManager *self)
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{
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self->priv = CLUTTER_DEVICE_MANAGER_GET_PRIVATE (self);
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}
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/**
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* clutter_device_manager_get_default:
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*
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* Retrieves the device manager singleton
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*
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* Return value: (transfer none): the #ClutterDeviceManager singleton.
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* The returned instance is owned by Clutter and it should not be
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* modified or freed
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*
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* Since: 1.2
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*/
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ClutterDeviceManager *
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clutter_device_manager_get_default (void)
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{
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ClutterBackendClass *klass;
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klass = CLUTTER_BACKEND_GET_CLASS (clutter_get_default_backend ());
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g_assert (klass->get_device_manager != NULL);
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return klass->get_device_manager (clutter_get_default_backend ());
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}
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/**
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* clutter_device_manager_list_devices:
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* @device_manager: a #ClutterDeviceManager
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*
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* Lists all currently registered input devices
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*
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* Return value: (transfer container) (element-type ClutterInputDevice):
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* a newly allocated list of #ClutterInputDevice objects. Use
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* g_slist_free() to deallocate it when done
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*
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* Since: 1.2
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*/
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GSList *
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clutter_device_manager_list_devices (ClutterDeviceManager *device_manager)
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{
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const GSList *devices;
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g_return_val_if_fail (CLUTTER_IS_DEVICE_MANAGER (device_manager), NULL);
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devices = clutter_device_manager_peek_devices (device_manager);
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return g_slist_copy ((GSList *) devices);
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}
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/**
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* clutter_device_manager_peek_devices:
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* @device_manager: a #ClutterDeviceManager
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*
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* Lists all currently registered input devices
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*
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* Return value: (transfer none) (element-type ClutterInputDevice):
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* a pointer to the internal list of #ClutterInputDevice objects. The
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* returned list is owned by the #ClutterDeviceManager and should never
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* be modified or freed
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*
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* Since: 1.2
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*/
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const GSList *
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clutter_device_manager_peek_devices (ClutterDeviceManager *device_manager)
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{
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ClutterDeviceManagerClass *manager_class;
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g_return_val_if_fail (CLUTTER_IS_DEVICE_MANAGER (device_manager), NULL);
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manager_class = CLUTTER_DEVICE_MANAGER_GET_CLASS (device_manager);
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return manager_class->get_devices (device_manager);
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}
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/**
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* clutter_device_manager_get_device:
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* @device_manager: a #ClutterDeviceManager
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* @device_id: the integer id of a device
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*
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* Retrieves the #ClutterInputDevice with the given @device_id
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*
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* Return value: (transfer none): a #ClutterInputDevice or %NULL. The
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* returned device is owned by the #ClutterDeviceManager and should
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* never be modified or freed
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*
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* Since: 1.2
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*/
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ClutterInputDevice *
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clutter_device_manager_get_device (ClutterDeviceManager *device_manager,
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gint device_id)
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{
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ClutterDeviceManagerClass *manager_class;
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g_return_val_if_fail (CLUTTER_IS_DEVICE_MANAGER (device_manager), NULL);
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manager_class = CLUTTER_DEVICE_MANAGER_GET_CLASS (device_manager);
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return manager_class->get_device (device_manager, device_id);
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}
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/**
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* clutter_device_manager_get_core_device:
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* @device_manager: a #ClutterDeviceManager
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* @device_type: the type of the core device
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*
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* Retrieves the core #ClutterInputDevice of type @device_type
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*
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* Core devices are devices created automatically by the default
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* Clutter backend
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*
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* Return value: (transfer none): a #ClutterInputDevice or %NULL. The
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* returned device is owned by the #ClutterDeviceManager and should
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* not be modified or freed
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*
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* Since: 1.2
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*/
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ClutterInputDevice *
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clutter_device_manager_get_core_device (ClutterDeviceManager *device_manager,
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ClutterInputDeviceType device_type)
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{
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ClutterDeviceManagerClass *manager_class;
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g_return_val_if_fail (CLUTTER_IS_DEVICE_MANAGER (device_manager), NULL);
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manager_class = CLUTTER_DEVICE_MANAGER_GET_CLASS (device_manager);
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return manager_class->get_core_device (device_manager, device_type);
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}
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/*
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* _clutter_device_manager_add_device:
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* @device_manager: a #ClutterDeviceManager
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* @device: a #ClutterInputDevice
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*
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* Adds @device to the list of #ClutterInputDevice<!-- -->s maintained
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* by @device_manager
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*
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* The reference count of @device is not increased
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*
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* The #ClutterDeviceManager::device-added signal is emitted after
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* adding @device to the list
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*/
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void
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_clutter_device_manager_add_device (ClutterDeviceManager *device_manager,
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ClutterInputDevice *device)
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{
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ClutterDeviceManagerClass *manager_class;
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g_return_if_fail (CLUTTER_IS_DEVICE_MANAGER (device_manager));
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manager_class = CLUTTER_DEVICE_MANAGER_GET_CLASS (device_manager);
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g_assert (manager_class->add_device != NULL);
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manager_class->add_device (device_manager, device);
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g_signal_emit (device_manager, manager_signals[DEVICE_ADDED], 0, device);
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}
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/*
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* _clutter_device_manager_remove_device:
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* @device_manager: a #ClutterDeviceManager
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* @device: a #ClutterInputDevice
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*
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* Removes @device from the list of #ClutterInputDevice<!-- -->s
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* maintained by @device_manager
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*
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* The reference count of @device is not decreased
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*
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* The #ClutterDeviceManager::device-removed signal is emitted after
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* removing @device from the list
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*/
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void
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_clutter_device_manager_remove_device (ClutterDeviceManager *device_manager,
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ClutterInputDevice *device)
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{
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ClutterDeviceManagerClass *manager_class;
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g_return_if_fail (CLUTTER_IS_DEVICE_MANAGER (device_manager));
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manager_class = CLUTTER_DEVICE_MANAGER_GET_CLASS (device_manager);
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g_assert (manager_class->remove_device != NULL);
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manager_class->remove_device (device_manager, device);
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g_signal_emit (device_manager, manager_signals[DEVICE_REMOVED], 0, device);
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}
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/*
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* _clutter_device_manager_update_devices:
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* @device_manager: a #ClutterDeviceManager
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*
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* Updates every #ClutterInputDevice handled by @device_manager
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* by performing a pick paint at the coordinates of each pointer
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* device
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*/
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void
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_clutter_device_manager_update_devices (ClutterDeviceManager *device_manager)
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{
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const GSList *d;
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/* the user disabled motion events delivery on actors; we
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* don't perform any picking since the source of the events
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* will always be set to be the stage
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*/
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if (!clutter_get_motion_events_enabled ())
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return;
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for (d = clutter_device_manager_peek_devices (device_manager);
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d != NULL;
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d = d->next)
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{
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ClutterInputDevice *device = d->data;
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ClutterInputDeviceType device_type;
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/* we only care about pointer devices */
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device_type = clutter_input_device_get_device_type (device);
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if (device_type != CLUTTER_POINTER_DEVICE)
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continue;
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/* out of stage */
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if (device->stage == NULL)
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continue;
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_clutter_input_device_update (device);
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}
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}
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