terminal: add input interface

[elogind.git] / src / libsystemd-terminal / idev.h

diff --git a/src/libsystemd-terminal/idev.h b/src/libsystemd-terminal/idev.h
new file mode 100644 (file)
index 0000000..6f618f3
--- /dev/null
+++ b/src/libsystemd-terminal/idev.h
@@ -0,0 +1,133 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+  This file is part of systemd.
+
+  Copyright (C) 2014 David Herrmann <dh.herrmann@gmail.com>
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+/*
+ * IDev
+ */
+
+#pragma once
+
+#include <inttypes.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <systemd/sd-bus.h>
+#include <systemd/sd-event.h>
+#include "util.h"
+
+typedef struct idev_data                idev_data;
+
+typedef struct idev_event               idev_event;
+typedef struct idev_device              idev_device;
+typedef struct idev_session             idev_session;
+typedef struct idev_context             idev_context;
+
+/*
+ * Types
+ */
+
+enum {
+        IDEV_ELEMENT_CNT
+};
+
+enum {
+        IDEV_DEVICE_CNT
+};
+
+/*
+ * Data Packets
+ */
+
+enum {
+        IDEV_DATA_RESYNC,
+        IDEV_DATA_CNT
+};
+
+struct idev_data {
+        unsigned int type;
+        bool resync : 1;
+};
+
+/*
+ * Events
+ */
+
+enum {
+        IDEV_EVENT_DEVICE_ADD,
+        IDEV_EVENT_DEVICE_REMOVE,
+        IDEV_EVENT_DEVICE_DATA,
+        IDEV_EVENT_CNT
+};
+
+struct idev_event {
+        unsigned int type;
+        union {
+                struct {
+                        idev_device *device;
+                } device_add, device_remove;
+
+                struct {
+                        idev_device *device;
+                        idev_data data;
+                } device_data;
+        };
+};
+
+typedef int (*idev_event_fn) (idev_session *s, void *userdata, idev_event *ev);
+
+/*
+ * Devices
+ */
+
+void idev_device_enable(idev_device *d);
+void idev_device_disable(idev_device *d);
+
+/*
+ * Sessions
+ */
+
+enum {
+        IDEV_SESSION_CUSTOM                     = (1 << 0),
+        IDEV_SESSION_MANAGED                    = (1 << 1),
+};
+
+int idev_session_new(idev_session **out,
+                     idev_context *c,
+                     unsigned int flags,
+                     const char *name,
+                     idev_event_fn event_fn,
+                     void *userdata);
+idev_session *idev_session_free(idev_session *s);
+
+DEFINE_TRIVIAL_CLEANUP_FUNC(idev_session*, idev_session_free);
+
+bool idev_session_is_enabled(idev_session *s);
+void idev_session_enable(idev_session *s);
+void idev_session_disable(idev_session *s);
+
+/*
+ * Contexts
+ */
+
+int idev_context_new(idev_context **out, sd_event *event, sd_bus *sysbus);
+idev_context *idev_context_ref(idev_context *c);
+idev_context *idev_context_unref(idev_context *c);
+
+DEFINE_TRIVIAL_CLEANUP_FUNC(idev_context*, idev_context_unref);