265 lines
6.7 KiB
C
265 lines
6.7 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
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*
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* Copyright (C) 2015 Red Hat
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* Author: Carlos Garnacho <carlosg@gnome.org>
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*/
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#include "config.h"
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#include <string.h>
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#include <gudev/gudev.h>
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#include <gdk/gdkwayland.h>
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#include "gsd-device-manager-udev.h"
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struct _GsdUdevDeviceManager
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{
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GsdDeviceManager parent_instance;
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GHashTable *devices;
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GUdevClient *udev_client;
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};
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struct _GsdUdevDeviceManagerClass
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{
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GsdDeviceManagerClass parent_class;
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};
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G_DEFINE_TYPE (GsdUdevDeviceManager, gsd_udev_device_manager, GSD_TYPE_DEVICE_MANAGER)
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/* Index matches GsdDeviceType */
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const gchar *udev_ids[] = {
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"ID_INPUT_MOUSE",
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"ID_INPUT_KEYBOARD",
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"ID_INPUT_TOUCHPAD",
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"ID_INPUT_TABLET",
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"ID_INPUT_TOUCHSCREEN",
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"ID_INPUT_TABLET_PAD",
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};
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static GsdDeviceType
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udev_device_get_device_type (GUdevDevice *device)
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{
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GsdDeviceType type = 0;
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gint i;
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for (i = 0; i < G_N_ELEMENTS (udev_ids); i++) {
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if (g_udev_device_get_property_as_boolean (device, udev_ids[i]))
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type |= (1 << i);
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}
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return type;
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}
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static gboolean
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device_is_evdev (GUdevDevice *device)
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{
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const gchar *device_file;
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device_file = g_udev_device_get_device_file (device);
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if (!device_file || strstr (device_file, "/event") == NULL)
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return FALSE;
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return g_udev_device_get_property_as_boolean (device, "ID_INPUT");
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}
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static GsdDevice *
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create_device (GUdevDevice *udev_device)
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{
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const gchar *vendor, *product, *name;
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guint width, height;
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GUdevDevice *parent;
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GsdDevice *device;
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parent = g_udev_device_get_parent (udev_device);
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g_assert (parent != NULL);
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name = g_udev_device_get_sysfs_attr (parent, "name");
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vendor = g_udev_device_get_property (udev_device, "ID_VENDOR_ID");
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product = g_udev_device_get_property (udev_device, "ID_MODEL_ID");
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if (!vendor || !product) {
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vendor = g_udev_device_get_sysfs_attr (udev_device, "device/id/vendor");
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product = g_udev_device_get_sysfs_attr (udev_device, "device/id/product");
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}
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width = g_udev_device_get_property_as_int (udev_device, "ID_INPUT_WIDTH_MM");
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height = g_udev_device_get_property_as_int (udev_device, "ID_INPUT_HEIGHT_MM");
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device = g_object_new (GSD_TYPE_DEVICE,
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"name", name,
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"device-file", g_udev_device_get_device_file (udev_device),
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"type", udev_device_get_device_type (udev_device),
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"vendor-id", vendor,
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"product-id", product,
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"width", width,
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"height", height,
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NULL);
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g_object_unref (parent);
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return device;
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}
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static void
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add_device (GsdUdevDeviceManager *manager,
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GUdevDevice *udev_device)
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{
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GUdevDevice *parent;
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GsdDevice *device;
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parent = g_udev_device_get_parent (udev_device);
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if (!parent)
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return;
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device = create_device (udev_device);
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g_hash_table_insert (manager->devices, g_object_ref (udev_device), device);
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g_signal_emit_by_name (manager, "device-added", device);
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}
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static void
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remove_device (GsdUdevDeviceManager *manager,
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GUdevDevice *udev_device)
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{
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GsdDevice *device;
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device = g_hash_table_lookup (manager->devices, udev_device);
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if (!device)
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return;
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g_hash_table_steal (manager->devices, udev_device);
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g_signal_emit_by_name (manager, "device-removed", device);
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g_object_unref (device);
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g_object_unref (udev_device);
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}
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static void
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udev_event_cb (GUdevClient *client,
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gchar *action,
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GUdevDevice *device,
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GsdUdevDeviceManager *manager)
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{
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if (!device_is_evdev (device))
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return;
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if (g_strcmp0 (action, "add") == 0) {
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add_device (manager, device);
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} else if (g_strcmp0 (action, "remove") == 0) {
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remove_device (manager, device);
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}
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}
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static void
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gsd_udev_device_manager_init (GsdUdevDeviceManager *manager)
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{
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const gchar *subsystems[] = { "input", NULL };
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GList *devices, *l;
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manager->devices = g_hash_table_new_full (NULL, NULL,
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(GDestroyNotify) g_object_unref,
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(GDestroyNotify) g_object_unref);
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manager->udev_client = g_udev_client_new (subsystems);
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g_signal_connect (manager->udev_client, "uevent",
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G_CALLBACK (udev_event_cb), manager);
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devices = g_udev_client_query_by_subsystem (manager->udev_client,
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subsystems[0]);
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for (l = devices; l; l = l->next) {
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GUdevDevice *device = l->data;
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if (device_is_evdev (device))
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add_device (manager, device);
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g_object_unref (device);
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}
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g_list_free (devices);
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}
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static void
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gsd_udev_device_manager_finalize (GObject *object)
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{
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GsdUdevDeviceManager *manager = GSD_UDEV_DEVICE_MANAGER (object);
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g_hash_table_destroy (manager->devices);
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g_object_unref (manager->udev_client);
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G_OBJECT_CLASS (gsd_udev_device_manager_parent_class)->finalize (object);
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}
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static GList *
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gsd_udev_device_manager_list_devices (GsdDeviceManager *manager,
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GsdDeviceType type)
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{
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GsdUdevDeviceManager *manager_udev = GSD_UDEV_DEVICE_MANAGER (manager);
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GsdDeviceType device_type;
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GList *devices = NULL;
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GHashTableIter iter;
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GsdDevice *device;
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g_hash_table_iter_init (&iter, manager_udev->devices);
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while (g_hash_table_iter_next (&iter, NULL, (gpointer *) &device)) {
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device_type = gsd_device_get_device_type (device);
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if ((device_type & type) == type)
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devices = g_list_prepend (devices, device);
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}
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return devices;
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}
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static GsdDevice *
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gsd_udev_device_manager_lookup_device (GsdDeviceManager *manager,
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GdkDevice *gdk_device)
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{
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const gchar *node_path;
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GHashTableIter iter;
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GsdDevice *device;
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node_path = gdk_wayland_device_get_node_path (gdk_device);
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if (!node_path)
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return NULL;
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g_hash_table_iter_init (&iter, GSD_UDEV_DEVICE_MANAGER (manager)->devices);
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while (g_hash_table_iter_next (&iter, NULL, (gpointer *) &device)) {
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if (g_strcmp0 (node_path,
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gsd_device_get_device_file (device)) == 0) {
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return device;
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}
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}
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return NULL;
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}
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static void
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gsd_udev_device_manager_class_init (GsdUdevDeviceManagerClass *klass)
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{
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GsdDeviceManagerClass *manager_class = GSD_DEVICE_MANAGER_CLASS (klass);
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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object_class->finalize = gsd_udev_device_manager_finalize;
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manager_class->list_devices = gsd_udev_device_manager_list_devices;
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manager_class->lookup_device = gsd_udev_device_manager_lookup_device;
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}
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