diff --git a/external/include/libinput.h b/external/include/libinput.h
new file mode 100644
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+++ b/external/include/libinput.h
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+/*
+ * Copyright © 2013 Jonas Ådahl
+ * Copyright © 2013-2015 Red Hat, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef LIBINPUT_H
+#define LIBINPUT_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdlib.h>
+#include <stdint.h>
+#include <libudev.h>
+
+#define LIBINPUT_ATTRIBUTE_PRINTF(_format, _args) \
+	__attribute__ ((format (printf, _format, _args)))
+#define LIBINPUT_ATTRIBUTE_DEPRECATED __attribute__ ((deprecated))
+
+/**
+ * @ingroup base
+ * @struct libinput
+ *
+ * A handle for accessing libinput. This struct is refcounted, use
+ * libinput_ref() and libinput_unref().
+ */
+struct libinput;
+
+/**
+ * @ingroup device
+ * @struct libinput_device
+ *
+ * A base handle for accessing libinput devices. This struct is
+ * refcounted, use libinput_device_ref() and libinput_device_unref().
+ */
+struct libinput_device;
+
+/**
+ * @ingroup device
+ * @struct libinput_device_group
+ *
+ * A base handle for accessing libinput device groups. This struct is
+ * refcounted, use libinput_device_group_ref() and
+ * libinput_device_group_unref().
+ */
+struct libinput_device_group;
+
+/**
+ * @ingroup seat
+ * @struct libinput_seat
+ *
+ * The base handle for accessing libinput seats. This struct is
+ * refcounted, use libinput_seat_ref() and libinput_seat_unref().
+ */
+struct libinput_seat;
+
+/**
+ * @ingroup device
+ * @struct libinput_tablet_tool
+ *
+ * An object representing a tool being used by a device with the @ref
+ * LIBINPUT_DEVICE_CAP_TABLET_TOOL capability.
+ *
+ * Tablet events generated by such a device are bound to a specific tool
+ * rather than coming from the device directly. Depending on the hardware it
+ * is possible to track the same physical tool across multiple
+ * struct libinput_device devices, see @ref tablet-serial-numbers.
+ *
+ * This struct is refcounted, use libinput_tablet_tool_ref() and
+ * libinput_tablet_tool_unref().
+ */
+struct libinput_tablet_tool;
+
+/**
+ * @ingroup event
+ * @struct libinput_event
+ *
+ * The base event type. Use libinput_event_get_pointer_event() or similar to
+ * get the actual event type.
+ *
+ * @warning Unlike other structs events are considered transient and
+ * <b>not</b> refcounted.
+ */
+struct libinput_event;
+
+/**
+ * @ingroup event
+ * @struct libinput_event_device_notify
+ *
+ * An event notifying the caller of a device being added or removed.
+ */
+struct libinput_event_device_notify;
+
+/**
+ * @ingroup event_keyboard
+ * @struct libinput_event_keyboard
+ *
+ * A keyboard event representing a key press/release.
+ */
+struct libinput_event_keyboard;
+
+/**
+ * @ingroup event_pointer
+ * @struct libinput_event_pointer
+ *
+ * A pointer event representing relative or absolute pointer movement,
+ * a button press/release or scroll axis events.
+ */
+struct libinput_event_pointer;
+
+/**
+ * @ingroup event_touch
+ * @struct libinput_event_touch
+ *
+ * Touch event representing a touch down, move or up, as well as a touch
+ * cancel and touch frame events. Valid event types for this event are @ref
+ * LIBINPUT_EVENT_TOUCH_DOWN, @ref LIBINPUT_EVENT_TOUCH_MOTION, @ref
+ * LIBINPUT_EVENT_TOUCH_UP, @ref LIBINPUT_EVENT_TOUCH_CANCEL and @ref
+ * LIBINPUT_EVENT_TOUCH_FRAME.
+ */
+struct libinput_event_touch;
+
+/**
+ * @ingroup event_tablet
+ * @struct libinput_event_tablet_tool
+ *
+ * Tablet tool event representing an axis update, button press, or tool
+ * update. Valid event types for this event are @ref
+ * LIBINPUT_EVENT_TABLET_TOOL_AXIS, @ref
+ * LIBINPUT_EVENT_TABLET_TOOL_PROXIMITY and @ref
+ * LIBINPUT_EVENT_TABLET_TOOL_BUTTON.
+ */
+struct libinput_event_tablet_tool;
+
+/**
+ * @ingroup event_tablet_pad
+ * @struct libinput_event_tablet_pad
+ *
+ * Tablet pad event representing a button press, or ring/strip update on
+ * the tablet pad itself. Valid event types for this event are @ref
+ * LIBINPUT_EVENT_TABLET_PAD_BUTTON, @ref LIBINPUT_EVENT_TABLET_PAD_RING and
+ * @ref LIBINPUT_EVENT_TABLET_PAD_STRIP.
+ */
+struct libinput_event_tablet_pad;
+
+/**
+ * @ingroup base
+ *
+ * Log priority for internal logging messages.
+ */
+enum libinput_log_priority {
+	LIBINPUT_LOG_PRIORITY_DEBUG = 10,
+	LIBINPUT_LOG_PRIORITY_INFO = 20,
+	LIBINPUT_LOG_PRIORITY_ERROR = 30,
+};
+
+/**
+ * @ingroup device
+ *
+ * Capabilities on a device. A device may have one or more capabilities
+ * at a time, capabilities remain static for the lifetime of the device.
+ */
+enum libinput_device_capability {
+	LIBINPUT_DEVICE_CAP_KEYBOARD = 0,
+	LIBINPUT_DEVICE_CAP_POINTER = 1,
+	LIBINPUT_DEVICE_CAP_TOUCH = 2,
+	LIBINPUT_DEVICE_CAP_TABLET_TOOL = 3,
+	LIBINPUT_DEVICE_CAP_TABLET_PAD = 4,
+	LIBINPUT_DEVICE_CAP_GESTURE = 5,
+};
+
+/**
+ * @ingroup device
+ *
+ * Logical state of a key. Note that the logical state may not represent
+ * the physical state of the key.
+ */
+enum libinput_key_state {
+	LIBINPUT_KEY_STATE_RELEASED = 0,
+	LIBINPUT_KEY_STATE_PRESSED = 1
+};
+
+/**
+ * @ingroup device
+ *
+ * Mask reflecting LEDs on a device.
+ */
+enum libinput_led {
+	LIBINPUT_LED_NUM_LOCK = (1 << 0),
+	LIBINPUT_LED_CAPS_LOCK = (1 << 1),
+	LIBINPUT_LED_SCROLL_LOCK = (1 << 2)
+};
+
+/**
+ * @ingroup device
+ *
+ * Logical state of a physical button. Note that the logical state may not
+ * represent the physical state of the button.
+ */
+enum libinput_button_state {
+	LIBINPUT_BUTTON_STATE_RELEASED = 0,
+	LIBINPUT_BUTTON_STATE_PRESSED = 1
+};
+
+/**
+ * @ingroup device
+ *
+ * Axes on a device with the capability @ref LIBINPUT_DEVICE_CAP_POINTER
+ * that are not x or y coordinates.
+ *
+ * The two scroll axes @ref LIBINPUT_POINTER_AXIS_SCROLL_VERTICAL and
+ * @ref LIBINPUT_POINTER_AXIS_SCROLL_HORIZONTAL are engaged separately,
+ * depending on the device. libinput provides some scroll direction locking
+ * but it is up to the caller to determine which axis is needed and
+ * appropriate in the current interaction
+ */
+enum libinput_pointer_axis {
+	LIBINPUT_POINTER_AXIS_SCROLL_VERTICAL = 0,
+	LIBINPUT_POINTER_AXIS_SCROLL_HORIZONTAL = 1,
+};
+
+/**
+ * @ingroup device
+ *
+ * The source for a libinput_pointer_axis event. See
+ * libinput_event_pointer_get_axis_source() for details.
+ */
+enum libinput_pointer_axis_source {
+	/**
+	 * The event is caused by the rotation of a wheel.
+	 */
+	LIBINPUT_POINTER_AXIS_SOURCE_WHEEL = 1,
+	/**
+	 * The event is caused by the movement of one or more fingers on a
+	 * device.
+	 */
+	LIBINPUT_POINTER_AXIS_SOURCE_FINGER,
+	/**
+	 * The event is caused by the motion of some device.
+	 */
+	LIBINPUT_POINTER_AXIS_SOURCE_CONTINUOUS,
+};
+
+/**
+ * @ingroup event_tablet_pad
+ *
+ * The source for a @ref LIBINPUT_EVENT_TABLET_PAD_RING event. See
+ * libinput_event_tablet_pad_get_ring_source() for details.
+ */
+enum libinput_tablet_pad_ring_axis_source {
+	LIBINPUT_TABLET_PAD_RING_SOURCE_UNKNOWN = 1,
+	/**
+	 * The event is caused by the movement of one or more fingers on
+	 * the ring.
+	 */
+	LIBINPUT_TABLET_PAD_RING_SOURCE_FINGER,
+};
+
+/**
+ * @ingroup event_tablet_pad
+ *
+ * The source for a @ref LIBINPUT_EVENT_TABLET_PAD_STRIP event. See
+ * libinput_event_tablet_pad_get_strip_source() for details.
+ */
+enum libinput_tablet_pad_strip_axis_source {
+	LIBINPUT_TABLET_PAD_STRIP_SOURCE_UNKNOWN = 1,
+	/**
+	 * The event is caused by the movement of one or more fingers on
+	 * the strip.
+	 */
+	LIBINPUT_TABLET_PAD_STRIP_SOURCE_FINGER,
+};
+
+/**
+ * @ingroup device
+ *
+ * Available tool types for a device with the @ref
+ * LIBINPUT_DEVICE_CAP_TABLET_TOOL capability. The tool type defines the default
+ * usage of the tool as advertised by the manufacturer. Multiple different
+ * physical tools may share the same tool type, e.g. a Wacom Classic Pen,
+ * Wacom Pro Pen and a Wacom Grip Pen are all of type @ref
+ * LIBINPUT_TABLET_TOOL_TYPE_PEN.
+ * Use libinput_tablet_tool_get_tool_id() to get a specific model where applicable.
+ *
+ * Note that on some device, the eraser tool is on the tail end of a pen
+ * device. On other devices, e.g. MS Surface 3, the eraser is the pen tip
+ * while a button is held down.
+ *
+ * @note The @ref libinput_tablet_tool_type can only describe the default physical
+ * type of the device. For devices with adjustable physical properties
+ * the tool type remains the same, i.e. putting a Wacom stroke nib into a
+ * classic pen leaves the tool type as @ref LIBINPUT_TABLET_TOOL_TYPE_PEN.
+ */
+enum libinput_tablet_tool_type {
+	LIBINPUT_TABLET_TOOL_TYPE_PEN = 1,	/**< A generic pen */
+	LIBINPUT_TABLET_TOOL_TYPE_ERASER,	/**< Eraser */
+	LIBINPUT_TABLET_TOOL_TYPE_BRUSH,	/**< A paintbrush-like tool */
+	LIBINPUT_TABLET_TOOL_TYPE_PENCIL,	/**< Physical drawing tool, e.g.
+					             Wacom Inking Pen */
+	LIBINPUT_TABLET_TOOL_TYPE_AIRBRUSH,	/**< An airbrush-like tool */
+	LIBINPUT_TABLET_TOOL_TYPE_MOUSE,	/**< A mouse bound to the tablet */
+	LIBINPUT_TABLET_TOOL_TYPE_LENS,		/**< A mouse tool with a lens */
+};
+
+/**
+ * @ingroup device
+ *
+ * The state of proximity for a tool on a device. The device must have the @ref
+ * LIBINPUT_DEVICE_CAP_TABLET_TOOL capability.
+ *
+ * The proximity of a tool is a binary state signalling whether the tool is
+ * within a detectable distance of the tablet device. A tool that is out of
+ * proximity cannot generate events.
+ *
+ * On some hardware a tool goes out of proximity when it ceases to touch the
+ * surface. On other hardware, the tool is still detectable within a short
+ * distance (a few cm) off the surface.
+ */
+enum libinput_tablet_tool_proximity_state {
+	LIBINPUT_TABLET_TOOL_PROXIMITY_STATE_OUT = 0,
+	LIBINPUT_TABLET_TOOL_PROXIMITY_STATE_IN = 1,
+};
+
+/**
+ * @ingroup device
+ *
+ * The tip contact state for a tool on a device. The device must have
+ * the @ref LIBINPUT_DEVICE_CAP_TABLET_TOOL capability.
+ *
+ * The tip contact state of a tool is a binary state signalling whether the tool is
+ * touching the surface of the tablet device.
+ */
+enum libinput_tablet_tool_tip_state {
+	LIBINPUT_TABLET_TOOL_TIP_UP = 0,
+	LIBINPUT_TABLET_TOOL_TIP_DOWN = 1,
+};
+
+/**
+ * @defgroup tablet_pad_modes Tablet pad modes
+ *
+ * Handling the virtual mode groups of buttons, strips and rings on tablet
+ * pad devices. See @ref tablet-pad-modes for details.
+ */
+
+/**
+ * @ingroup tablet_pad_modes
+ * @struct libinput_tablet_pad_mode_group
+ *
+ * A mode on a tablet pad is a virtual grouping of functionality, usually
+ * based on some visual feedback like LEDs on the pad. The set of buttons,
+ * rings and strips that share the same mode are a "mode group". Whenever
+ * the mode changes, all buttons, rings and strips within this mode group
+ * are affected. See @ref tablet-pad-modes for detail.
+ *
+ * Most tablets only have a single mode group, some tablets provide multiple
+ * mode groups through independent banks of LEDs (e.g. the Wacom Cintiq
+ * 24HD). libinput guarantees that at least one mode group is always
+ * available.
+ *
+ * This struct is refcounted, use libinput_tablet_pad_mode_group_ref() and
+ * libinput_tablet_pad_mode_group_unref().
+ */
+struct libinput_tablet_pad_mode_group;
+
+/**
+ * @ingroup tablet_pad_modes
+ *
+ * Most devices only provide a single mode group, however devices such as
+ * the Wacom Cintiq 22HD provide two mode groups. If multiple mode groups
+ * are available, a caller should use
+ * libinput_tablet_pad_mode_group_has_button(),
+ * libinput_tablet_pad_mode_group_has_ring() and
+ * libinput_tablet_pad_mode_group_has_strip() to associate each button,
+ * ring and strip with the correct mode group.
+ *
+ * @return the number of mode groups available on this device
+ */
+int
+libinput_device_tablet_pad_get_num_mode_groups(struct libinput_device *device);
+
+/**
+ * @ingroup tablet_pad_modes
+ *
+ * The returned mode group is not refcounted and may become invalid after
+ * the next call to libinput. Use libinput_tablet_pad_mode_group_ref() and
+ * libinput_tablet_pad_mode_group_unref() to continue using the handle
+ * outside of the immediate scope.
+ *
+ * While at least one reference is kept by the caller, the returned mode
+ * group will be identical for each subsequent call of this function with
+ * the same index and that same struct is returned from
+ * libinput_event_tablet_pad_get_mode_group(), provided the event was
+ * generated by this mode group.
+ *
+ * @param device A device with the @ref LIBINPUT_DEVICE_CAP_TABLET_PAD
+ * capability
+ * @param index A mode group index
+ * @return the mode group with the given index or NULL if an invalid index
+ * is given.
+ */
+struct libinput_tablet_pad_mode_group*
+libinput_device_tablet_pad_get_mode_group(struct libinput_device *device,
+					  unsigned int index);
+
+/**
+ * @ingroup tablet_pad_modes
+ *
+ * The returned number is the same index as passed to
+ * libinput_device_tablet_pad_get_mode_group(). For tablets with only one
+ * mode this number is always 0.
+ *
+ * @param group A previously obtained mode group
+ * @return the numeric index this mode group represents, starting at 0
+ */
+unsigned int
+libinput_tablet_pad_mode_group_get_index(struct libinput_tablet_pad_mode_group *group);
+
+/**
+ * @ingroup tablet_pad_modes
+ *
+ * Query the mode group for the number of available modes. The number of
+ * modes is usually decided by the number of physical LEDs available on the
+ * device. Different mode groups may have a different number of modes. Use
+ * libinput_tablet_pad_mode_group_get_mode() to get the currently active
+ * mode.
+ *
+ * libinput guarantees that at least one mode is available. A device without
+ * mode switching capability has a single mode group and a single mode.
+ *
+ * @param group A previously obtained mode group
+ * @return the number of modes available in this mode group
+ */
+unsigned int
+libinput_tablet_pad_mode_group_get_num_modes(struct libinput_tablet_pad_mode_group *group);
+
+/**
+ * @ingroup tablet_pad_modes
+ *
+ * Return the current mode this mode group is in. Note that the returned
+ * mode is the mode valid as of completing the last libinput_dispatch().
+ * The returned mode may thus be different than the mode returned by
+ * libinput_event_tablet_pad_get_mode().
+ *
+ * For example, if the mode was toggled three times between the call to
+ * libinput_dispatch(), this function returns the third mode but the events
+ * in the event queue will return the modes 1, 2 and 3, respectively.
+ *
+ * @param group A previously obtained mode group
+ * @return the numeric index of the current mode in this group, starting at 0
+ *
+ * @see libinput_event_tablet_pad_get_mode
+ */
+unsigned int
+libinput_tablet_pad_mode_group_get_mode(struct libinput_tablet_pad_mode_group *group);
+
+/**
+ * @ingroup tablet_pad_modes
+ *
+ * Devices without mode switching capabilities return true for every button.
+ *
+ * @param group A previously obtained mode group
+ * @param button A button index, starting at 0
+ * @return true if the given button index is part of this mode group or
+ * false otherwise
+ */
+int
+libinput_tablet_pad_mode_group_has_button(struct libinput_tablet_pad_mode_group *group,
+					  unsigned int button);
+
+/**
+ * @ingroup tablet_pad_modes
+ *
+ * Devices without mode switching capabilities return true for every ring.
+ *
+ * @param group A previously obtained mode group
+ * @param ring A ring index, starting at 0
+ * @return true if the given ring index is part of this mode group or
+ * false otherwise
+ */
+int
+libinput_tablet_pad_mode_group_has_ring(struct libinput_tablet_pad_mode_group *group,
+					  unsigned int ring);
+
+/**
+ * @ingroup tablet_pad_modes
+ *
+ * Devices without mode switching capabilities return true for every strip.
+ *
+ * @param group A previously obtained mode group
+ * @param strip A strip index, starting at 0
+ * @return true if the given strip index is part of this mode group or
+ * false otherwise
+ */
+int
+libinput_tablet_pad_mode_group_has_strip(struct libinput_tablet_pad_mode_group *group,
+					  unsigned int strip);
+
+/**
+ * @ingroup tablet_pad_modes
+ *
+ * The toggle button in a mode group is the button assigned to cycle to or
+ * directly assign a new mode when pressed. Not all devices have a toggle
+ * button and some devices may have more than one toggle button. For
+ * example, the Wacom Cintiq 24HD has six toggle buttons in two groups, each
+ * directly selecting one of the three modes per group.
+ *
+ * Devices without mode switching capabilities return false for every button.
+ *
+ * @param group A previously obtained mode group
+ * @param button A button index, starting at 0
+ * @retval non-zero if the button is a mode toggle button for this group, or
+ * zero otherwise
+ */
+int
+libinput_tablet_pad_mode_group_button_is_toggle(struct libinput_tablet_pad_mode_group *group,
+						unsigned int button);
+
+/**
+ * @ingroup tablet_pad_modes
+ *
+ * Increase the refcount of the mode group. A mode group will be
+ * freed whenever the refcount reaches 0.
+ *
+ * @param group A previously obtained mode group
+ * @return The passed mode group
+ */
+struct libinput_tablet_pad_mode_group *
+libinput_tablet_pad_mode_group_ref(
+			struct libinput_tablet_pad_mode_group *group);
+
+/**
+ * @ingroup tablet_pad_modes
+ *
+ * Decrease the refcount of the mode group. A mode group will be
+ * freed whenever the refcount reaches 0.
+ *
+ * @param group A previously obtained mode group
+ * @return NULL if the group was destroyed, otherwise the passed mode group
+ */
+struct libinput_tablet_pad_mode_group *
+libinput_tablet_pad_mode_group_unref(
+			struct libinput_tablet_pad_mode_group *group);
+
+/**
+ * @ingroup tablet_pad_modes
+ *
+ * Set caller-specific data associated with this mode group. libinput does
+ * not manage, look at, or modify this data. The caller must ensure the
+ * data is valid.
+ *
+ * @param group A previously obtained mode group
+ * @param user_data Caller-specific data pointer
+ * @see libinput_tablet_pad_mode_group_get_user_data
+ *
+ */
+void
+libinput_tablet_pad_mode_group_set_user_data(
+			struct libinput_tablet_pad_mode_group *group,
+			void *user_data);
+
+/**
+ * @ingroup tablet_pad_modes
+ *
+ * Get the caller-specific data associated with this mode group, if any.
+ *
+ * @param group A previously obtained mode group
+ * @return Caller-specific data pointer or NULL if none was set
+ * @see libinput_tablet_pad_mode_group_set_user_data
+ */
+void *
+libinput_tablet_pad_mode_group_get_user_data(
+			struct libinput_tablet_pad_mode_group *group);
+
+/**
+ * @ingroup base
+ *
+ * Event type for events returned by libinput_get_event().
+ */
+enum libinput_event_type {
+	/**
+	 * This is not a real event type, and is only used to tell the user that
+	 * no new event is available in the queue. See
+	 * libinput_next_event_type().
+	 */
+	LIBINPUT_EVENT_NONE = 0,
+
+	/**
+	 * Signals that a device has been added to the context. The device will
+	 * not be read until the next time the user calls libinput_dispatch()
+	 * and data is available.
+	 *
+	 * This allows setting up initial device configuration before any events
+	 * are created.
+	 */
+	LIBINPUT_EVENT_DEVICE_ADDED,
+
+	/**
+	 * Signals that a device has been removed. No more events from the
+	 * associated device will be in the queue or be queued after this event.
+	 */
+	LIBINPUT_EVENT_DEVICE_REMOVED,
+
+	LIBINPUT_EVENT_KEYBOARD_KEY = 300,
+
+	LIBINPUT_EVENT_POINTER_MOTION = 400,
+	LIBINPUT_EVENT_POINTER_MOTION_ABSOLUTE,
+	LIBINPUT_EVENT_POINTER_BUTTON,
+	LIBINPUT_EVENT_POINTER_AXIS,
+
+	LIBINPUT_EVENT_TOUCH_DOWN = 500,
+	LIBINPUT_EVENT_TOUCH_UP,
+	LIBINPUT_EVENT_TOUCH_MOTION,
+	LIBINPUT_EVENT_TOUCH_CANCEL,
+	/**
+	 * Signals the end of a set of touchpoints at one device sample
+	 * time. This event has no coordinate information attached.
+	 */
+	LIBINPUT_EVENT_TOUCH_FRAME,
+
+	/**
+	 * One or more axes have changed state on a device with the @ref
+	 * LIBINPUT_DEVICE_CAP_TABLET_TOOL capability. This event is only sent
+	 * when the tool is in proximity, see @ref
+	 * LIBINPUT_EVENT_TABLET_TOOL_PROXIMITY for details.
+	 *
+	 * The proximity event contains the initial state of the axis as the
+	 * tool comes into proximity. An event of type @ref
+	 * LIBINPUT_EVENT_TABLET_TOOL_AXIS is only sent when an axis value
+	 * changes from this initial state. It is possible for a tool to
+	 * enter and leave proximity without sending an event of type @ref
+	 * LIBINPUT_EVENT_TABLET_TOOL_AXIS.
+	 *
+	 * An event of type @ref LIBINPUT_EVENT_TABLET_TOOL_AXIS is sent
+	 * when the tip state does not change. See the documentation for
+	 * @ref LIBINPUT_EVENT_TABLET_TOOL_TIP for more details.
+	 */
+	LIBINPUT_EVENT_TABLET_TOOL_AXIS = 600,
+	/**
+	 * Signals that a tool has come in or out of proximity of a device with
+	 * the @ref LIBINPUT_DEVICE_CAP_TABLET_TOOL capability.
+	 *
+	 * Proximity events contain each of the current values for each axis,
+	 * and these values may be extracted from them in the same way they are
+	 * with @ref LIBINPUT_EVENT_TABLET_TOOL_AXIS events.
+	 *
+	 * Some tools may always be in proximity. For these tools, events of
+	 * type @ref LIBINPUT_TABLET_TOOL_PROXIMITY_STATE_IN are sent only once after @ref
+	 * LIBINPUT_EVENT_DEVICE_ADDED, and events of type @ref
+	 * LIBINPUT_TABLET_TOOL_PROXIMITY_STATE_OUT are sent only once before @ref
+	 * LIBINPUT_EVENT_DEVICE_REMOVED.
+	 *
+	 * If the tool that comes into proximity supports x/y coordinates,
+	 * libinput guarantees that both x and y are set in the proximity
+	 * event.
+	 *
+	 * When a tool goes out of proximity, the value of every axis should be
+	 * assumed to have an undefined state and any buttons that are currently held
+	 * down on the stylus are marked as released. Button release events for
+	 * each button that was held down on the stylus are sent before the
+	 * proximity out event.
+	 */
+	LIBINPUT_EVENT_TABLET_TOOL_PROXIMITY,
+	/**
+	 * Signals that a tool has come in contact with the surface of a
+	 * device with the @ref LIBINPUT_DEVICE_CAP_TABLET_TOOL capability.
+	 *
+	 * On devices without distance proximity detection, the @ref
+	 * LIBINPUT_EVENT_TABLET_TOOL_TIP is sent immediately after @ref
+	 * LIBINPUT_EVENT_TABLET_TOOL_PROXIMITY for the tip down event, and
+	 * immediately before for the tip up event.
+	 *
+	 * The decision when a tip touches the surface is device-dependent
+	 * and may be derived from pressure data or other means. If the tip
+	 * state is changed by axes changing state, the
+	 * @ref LIBINPUT_EVENT_TABLET_TOOL_TIP event includes the changed
+	 * axes and no additional axis event is sent for this state change.
+	 * In other words, a caller must look at both @ref
+	 * LIBINPUT_EVENT_TABLET_TOOL_AXIS and @ref
+	 * LIBINPUT_EVENT_TABLET_TOOL_TIP events to know the current state
+	 * of the axes.
+	 *
+	 * If a button state change occurs at the same time as a tip state
+	 * change, the order of events is device-dependent.
+	 */
+	LIBINPUT_EVENT_TABLET_TOOL_TIP,
+	/**
+	 * Signals that a tool has changed a logical button state on a
+	 * device with the @ref LIBINPUT_DEVICE_CAP_TABLET_TOOL capability.
+	 *
+	 * Button state changes occur on their own and do not include axis
+	 * state changes. If button and axis state changes occur within the
+	 * same logical hardware event, the order of the @ref
+	 * LIBINPUT_EVENT_TABLET_TOOL_BUTTON and @ref
+	 * LIBINPUT_EVENT_TABLET_TOOL_AXIS event is device-specific.
+	 *
+	 * This event is not to be confused with the button events emitted
+	 * by the tablet pad. See @ref LIBINPUT_EVENT_TABLET_PAD_BUTTON.
+	 *
+	 * @see LIBINPUT_EVENT_TABLET_BUTTON
+	 */
+	LIBINPUT_EVENT_TABLET_TOOL_BUTTON,
+
+	/**
+	 * A button pressed on a device with the @ref
+	 * LIBINPUT_DEVICE_CAP_TABLET_PAD capability.
+	 *
+	 * This event is not to be confused with the button events emitted
+	 * by tools on a tablet. See @ref LIBINPUT_EVENT_TABLET_TOOL_BUTTON.
+	 */
+	LIBINPUT_EVENT_TABLET_PAD_BUTTON = 700,
+	/**
+	 * A status change on a tablet ring with the
+	 * LIBINPUT_DEVICE_CAP_TABLET_PAD capability.
+	 */
+	LIBINPUT_EVENT_TABLET_PAD_RING,
+
+	/**
+	 * A status change on a strip on a device with the @ref
+	 * LIBINPUT_DEVICE_CAP_TABLET_PAD capability.
+	 */
+	LIBINPUT_EVENT_TABLET_PAD_STRIP,
+
+	LIBINPUT_EVENT_GESTURE_SWIPE_BEGIN = 800,
+	LIBINPUT_EVENT_GESTURE_SWIPE_UPDATE,
+	LIBINPUT_EVENT_GESTURE_SWIPE_END,
+	LIBINPUT_EVENT_GESTURE_PINCH_BEGIN,
+	LIBINPUT_EVENT_GESTURE_PINCH_UPDATE,
+	LIBINPUT_EVENT_GESTURE_PINCH_END,
+};
+
+/**
+ * @defgroup event Accessing and destruction of events
+ */
+
+/**
+ * @ingroup event
+ *
+ * Destroy the event, freeing all associated resources. Resources obtained
+ * from this event must be considered invalid after this call.
+ *
+ * @warning Unlike other structs events are considered transient and
+ * <b>not</b> refcounted. Calling libinput_event_destroy() <b>will</b>
+ * destroy the event.
+ *
+ * @param event An event retrieved by libinput_get_event().
+ */
+void
+libinput_event_destroy(struct libinput_event *event);
+
+/**
+ * @ingroup event
+ *
+ * Get the type of the event.
+ *
+ * @param event An event retrieved by libinput_get_event().
+ */
+enum libinput_event_type
+libinput_event_get_type(struct libinput_event *event);
+
+/**
+ * @ingroup event
+ *
+ * Get the libinput context from the event.
+ *
+ * @param event The libinput event
+ * @return The libinput context for this event.
+ */
+struct libinput *
+libinput_event_get_context(struct libinput_event *event);
+
+/**
+ * @ingroup event
+ *
+ * Return the device associated with this event. For device added/removed
+ * events this is the device added or removed. For all other device events,
+ * this is the device that generated the event.
+ *
+ * This device is not refcounted and its lifetime is that of the event. Use
+ * libinput_device_ref() before using the device outside of this scope.
+ *
+ * @return The device associated with this event
+ */
+
+struct libinput_device *
+libinput_event_get_device(struct libinput_event *event);
+
+/**
+ * @ingroup event
+ *
+ * Return the pointer event that is this input event. If the event type does
+ * not match the pointer event types, this function returns NULL.
+ *
+ * The inverse of this function is libinput_event_pointer_get_base_event().
+ *
+ * @return A pointer event, or NULL for other events
+ */
+struct libinput_event_pointer *
+libinput_event_get_pointer_event(struct libinput_event *event);
+
+/**
+ * @ingroup event
+ *
+ * Return the keyboard event that is this input event. If the event type does
+ * not match the keyboard event types, this function returns NULL.
+ *
+ * The inverse of this function is libinput_event_keyboard_get_base_event().
+ *
+ * @return A keyboard event, or NULL for other events
+ */
+struct libinput_event_keyboard *
+libinput_event_get_keyboard_event(struct libinput_event *event);
+
+/**
+ * @ingroup event
+ *
+ * Return the touch event that is this input event. If the event type does
+ * not match the touch event types, this function returns NULL.
+ *
+ * The inverse of this function is libinput_event_touch_get_base_event().
+ *
+ * @return A touch event, or NULL for other events
+ */
+struct libinput_event_touch *
+libinput_event_get_touch_event(struct libinput_event *event);
+
+/**
+ * @ingroup event
+ *
+ * Return the gesture event that is this input event. If the event type does
+ * not match the gesture event types, this function returns NULL.
+ *
+ * The inverse of this function is libinput_event_gesture_get_base_event().
+ *
+ * @return A gesture event, or NULL for other events
+ */
+struct libinput_event_gesture *
+libinput_event_get_gesture_event(struct libinput_event *event);
+
+/**
+ * @ingroup event
+ *
+ * Return the tablet tool event that is this input event. If the event type
+ * does not match the tablet tool event types, this function returns NULL.
+ *
+ * The inverse of this function is libinput_event_tablet_tool_get_base_event().
+ *
+ * @return A tablet tool event, or NULL for other events
+ */
+struct libinput_event_tablet_tool *
+libinput_event_get_tablet_tool_event(struct libinput_event *event);
+
+/**
+ * @ingroup event
+ *
+ * Return the tablet pad event that is this input event. If the event type does not
+ * match the tablet pad event types, this function returns NULL.
+ *
+ * The inverse of this function is libinput_event_tablet_pad_get_base_event().
+ *
+ * @return A tablet pad event, or NULL for other events
+ */
+struct libinput_event_tablet_pad *
+libinput_event_get_tablet_pad_event(struct libinput_event *event);
+
+/**
+ * @ingroup event
+ *
+ * Return the device event that is this input event. If the event type does
+ * not match the device event types, this function returns NULL.
+ *
+ * The inverse of this function is
+ * libinput_event_device_notify_get_base_event().
+ *
+ * @return A device event, or NULL for other events
+ */
+struct libinput_event_device_notify *
+libinput_event_get_device_notify_event(struct libinput_event *event);
+
+/**
+ * @ingroup event
+ *
+ * @return The generic libinput_event of this event
+ */
+struct libinput_event *
+libinput_event_device_notify_get_base_event(struct libinput_event_device_notify *event);
+
+/**
+ * @defgroup event_keyboard Keyboard events
+ *
+ * Key events are generated when a key changes its logical state, usually by
+ * being pressed or released.
+ */
+
+/**
+ * @ingroup event_keyboard
+ *
+ * @return The event time for this event
+ */
+uint32_t
+libinput_event_keyboard_get_time(struct libinput_event_keyboard *event);
+
+/**
+ * @ingroup event_keyboard
+ *
+ * @return The event time for this event in microseconds
+ */
+uint64_t
+libinput_event_keyboard_get_time_usec(struct libinput_event_keyboard *event);
+
+/**
+ * @ingroup event_keyboard
+ *
+ * @return The keycode that triggered this key event
+ */
+uint32_t
+libinput_event_keyboard_get_key(struct libinput_event_keyboard *event);
+
+/**
+ * @ingroup event_keyboard
+ *
+ * @return The state change of the key
+ */
+enum libinput_key_state
+libinput_event_keyboard_get_key_state(struct libinput_event_keyboard *event);
+
+/**
+ * @ingroup event_keyboard
+ *
+ * @return The generic libinput_event of this event
+ */
+struct libinput_event *
+libinput_event_keyboard_get_base_event(struct libinput_event_keyboard *event);
+
+/**
+ * @ingroup event_keyboard
+ *
+ * For the key of a @ref LIBINPUT_EVENT_KEYBOARD_KEY event, return the total number
+ * of keys pressed on all devices on the associated seat after the event was
+ * triggered.
+ *
+ * @note It is an application bug to call this function for events other than
+ * @ref LIBINPUT_EVENT_KEYBOARD_KEY. For other events, this function returns 0.
+ *
+ * @return The seat wide pressed key count for the key of this event
+ */
+uint32_t
+libinput_event_keyboard_get_seat_key_count(
+	struct libinput_event_keyboard *event);
+
+/**
+ * @defgroup event_pointer Pointer events
+ *
+ * Pointer events reflect motion, button and scroll events, as well as
+ * events from other axes.
+ */
+
+/**
+ * @ingroup event_pointer
+ *
+ * @return The event time for this event
+ */
+uint32_t
+libinput_event_pointer_get_time(struct libinput_event_pointer *event);
+
+/**
+ * @ingroup event_pointer
+ *
+ * @return The event time for this event in microseconds
+ */
+uint64_t
+libinput_event_pointer_get_time_usec(struct libinput_event_pointer *event);
+
+/**
+ * @ingroup event_pointer
+ *
+ * Return the delta between the last event and the current event. For pointer
+ * events that are not of type @ref LIBINPUT_EVENT_POINTER_MOTION, this
+ * function returns 0.
+ *
+ * If a device employs pointer acceleration, the delta returned by this
+ * function is the accelerated delta.
+ *
+ * Relative motion deltas are to be interpreted as pixel movement of a
+ * standardized mouse. See @ref motion_normalization for more details.
+ *
+ * @note It is an application bug to call this function for events other than
+ * @ref LIBINPUT_EVENT_POINTER_MOTION.
+ *
+ * @return The relative x movement since the last event
+ */
+double
+libinput_event_pointer_get_dx(struct libinput_event_pointer *event);
+
+/**
+ * @ingroup event_pointer
+ *
+ * Return the delta between the last event and the current event. For pointer
+ * events that are not of type @ref LIBINPUT_EVENT_POINTER_MOTION, this
+ * function returns 0.
+ *
+ * If a device employs pointer acceleration, the delta returned by this
+ * function is the accelerated delta.
+ *
+ * Relative motion deltas are to be interpreted as pixel movement of a
+ * standardized mouse. See @ref motion_normalization for more details.
+ *
+ * @note It is an application bug to call this function for events other than
+ * @ref LIBINPUT_EVENT_POINTER_MOTION.
+ *
+ * @return The relative y movement since the last event
+ */
+double
+libinput_event_pointer_get_dy(struct libinput_event_pointer *event);
+
+/**
+ * @ingroup event_pointer
+ *
+ * Return the relative delta of the unaccelerated motion vector of the
+ * current event. For pointer events that are not of type @ref
+ * LIBINPUT_EVENT_POINTER_MOTION, this function returns 0.
+ *
+ * Relative unaccelerated motion deltas are raw device coordinates.
+ * Note that these coordinates are subject to the device's native
+ * resolution. Touchpad coordinates represent raw device coordinates in the
+ * X resolution of the touchpad. See @ref motion_normalization for more
+ * details.
+ *
+ * Any rotation applied to the device also applies to unaccelerated motion
+ * (see libinput_device_config_rotation_set_angle()).
+ *
+ * @note It is an application bug to call this function for events other than
+ * @ref LIBINPUT_EVENT_POINTER_MOTION.
+ *
+ * @return The unaccelerated relative x movement since the last event
+ */
+double
+libinput_event_pointer_get_dx_unaccelerated(
+	struct libinput_event_pointer *event);
+
+/**
+ * @ingroup event_pointer
+ *
+ * Return the relative delta of the unaccelerated motion vector of the
+ * current event. For pointer events that are not of type @ref
+ * LIBINPUT_EVENT_POINTER_MOTION, this function returns 0.
+ *
+ * Relative unaccelerated motion deltas are raw device coordinates.
+ * Note that these coordinates are subject to the device's native
+ * resolution. Touchpad coordinates represent raw device coordinates in the
+ * X resolution of the touchpad. See @ref motion_normalization for more
+ * details.
+ *
+ * Any rotation applied to the device also applies to unaccelerated motion
+ * (see libinput_device_config_rotation_set_angle()).
+ *
+ * @note It is an application bug to call this function for events other than
+ * @ref LIBINPUT_EVENT_POINTER_MOTION.
+ *
+ * @return The unaccelerated relative y movement since the last event
+ */
+double
+libinput_event_pointer_get_dy_unaccelerated(
+	struct libinput_event_pointer *event);
+
+/**
+ * @ingroup event_pointer
+ *
+ * Return the current absolute x coordinate of the pointer event, in mm from
+ * the top left corner of the device. To get the corresponding output screen
+ * coordinate, use libinput_event_pointer_get_absolute_x_transformed().
+ *
+ * For pointer events that are not of type
+ * @ref LIBINPUT_EVENT_POINTER_MOTION_ABSOLUTE, this function returns 0.
+ *
+ * @note It is an application bug to call this function for events other than
+ * @ref LIBINPUT_EVENT_POINTER_MOTION_ABSOLUTE.
+ *
+ * @return The current absolute x coordinate
+ */
+double
+libinput_event_pointer_get_absolute_x(struct libinput_event_pointer *event);
+
+/**
+ * @ingroup event_pointer
+ *
+ * Return the current absolute y coordinate of the pointer event, in mm from
+ * the top left corner of the device. To get the corresponding output screen
+ * coordinate, use libinput_event_pointer_get_absolute_y_transformed().
+ *
+ * For pointer events that are not of type
+ * @ref LIBINPUT_EVENT_POINTER_MOTION_ABSOLUTE, this function returns 0.
+ *
+ * @note It is an application bug to call this function for events other than
+ * @ref LIBINPUT_EVENT_POINTER_MOTION_ABSOLUTE.
+ *
+ * @return The current absolute y coordinate
+ */
+double
+libinput_event_pointer_get_absolute_y(struct libinput_event_pointer *event);
+
+/**
+ * @ingroup event_pointer
+ *
+ * Return the current absolute x coordinate of the pointer event, transformed to
+ * screen coordinates.
+ *
+ * For pointer events that are not of type
+ * @ref LIBINPUT_EVENT_POINTER_MOTION_ABSOLUTE, the return value of this
+ * function is undefined.
+ *
+ * @note It is an application bug to call this function for events other than
+ * @ref LIBINPUT_EVENT_POINTER_MOTION_ABSOLUTE.
+ *
+ * @param event The libinput pointer event
+ * @param width The current output screen width
+ * @return The current absolute x coordinate transformed to a screen coordinate
+ */
+double
+libinput_event_pointer_get_absolute_x_transformed(
+	struct libinput_event_pointer *event,
+	uint32_t width);
+
+/**
+ * @ingroup event_pointer
+ *
+ * Return the current absolute y coordinate of the pointer event, transformed to
+ * screen coordinates.
+ *
+ * For pointer events that are not of type
+ * @ref LIBINPUT_EVENT_POINTER_MOTION_ABSOLUTE, the return value of this function is
+ * undefined.
+ *
+ * @note It is an application bug to call this function for events other than
+ * @ref LIBINPUT_EVENT_POINTER_MOTION_ABSOLUTE.
+ *
+ * @param event The libinput pointer event
+ * @param height The current output screen height
+ * @return The current absolute y coordinate transformed to a screen coordinate
+ */
+double
+libinput_event_pointer_get_absolute_y_transformed(
+	struct libinput_event_pointer *event,
+	uint32_t height);
+
+/**
+ * @ingroup event_pointer
+ *
+ * Return the button that triggered this event.
+ * For pointer events that are not of type @ref
+ * LIBINPUT_EVENT_POINTER_BUTTON, this function returns 0.
+ *
+ * @note It is an application bug to call this function for events other than
+ * @ref LIBINPUT_EVENT_POINTER_BUTTON.
+ *
+ * @return The button triggering this event
+ */
+uint32_t
+libinput_event_pointer_get_button(struct libinput_event_pointer *event);
+
+/**
+ * @ingroup event_pointer
+ *
+ * Return the button state that triggered this event.
+ * For pointer events that are not of type @ref
+ * LIBINPUT_EVENT_POINTER_BUTTON, this function returns 0.
+ *
+ * @note It is an application bug to call this function for events other than
+ * @ref LIBINPUT_EVENT_POINTER_BUTTON.
+ *
+ * @return The button state triggering this event
+ */
+enum libinput_button_state
+libinput_event_pointer_get_button_state(struct libinput_event_pointer *event);
+
+/**
+ * @ingroup event_pointer
+ *
+ * For the button of a @ref LIBINPUT_EVENT_POINTER_BUTTON event, return the
+ * total number of buttons pressed on all devices on the associated seat
+ * after the event was triggered.
+ *
+ * @note It is an application bug to call this function for events other than
+ * @ref LIBINPUT_EVENT_POINTER_BUTTON. For other events, this function
+ * returns 0.
+ *
+ * @return The seat wide pressed button count for the key of this event
+ */
+uint32_t
+libinput_event_pointer_get_seat_button_count(
+	struct libinput_event_pointer *event);
+
+/**
+ * @ingroup event_pointer
+ *
+ * Check if the event has a valid value for the given axis.
+ *
+ * If this function returns non-zero for an axis and
+ * libinput_event_pointer_get_axis_value() returns a value of 0, the event
+ * is a scroll stop event.
+ *
+ * For pointer events that are not of type @ref LIBINPUT_EVENT_POINTER_AXIS,
+ * this function returns 0.
+ *
+ * @note It is an application bug to call this function for events other than
+ * @ref LIBINPUT_EVENT_POINTER_AXIS.
+ *
+ * @return Non-zero if this event contains a value for this axis
+ */
+int
+libinput_event_pointer_has_axis(struct libinput_event_pointer *event,
+				enum libinput_pointer_axis axis);
+
+/**
+ * @ingroup event_pointer
+ *
+ * Return the axis value of the given axis. The interpretation of the value
+ * depends on the axis. For the two scrolling axes
+ * @ref LIBINPUT_POINTER_AXIS_SCROLL_VERTICAL and
+ * @ref LIBINPUT_POINTER_AXIS_SCROLL_HORIZONTAL, the value of the event is in
+ * relative scroll units, with the positive direction being down or right,
+ * respectively. For the interpretation of the value, see
+ * libinput_event_pointer_get_axis_source().
+ *
+ * If libinput_event_pointer_has_axis() returns 0 for an axis, this function
+ * returns 0 for that axis.
+ *
+ * For pointer events that are not of type @ref LIBINPUT_EVENT_POINTER_AXIS,
+ * this function returns 0.
+ *
+ * @note It is an application bug to call this function for events other than
+ * @ref LIBINPUT_EVENT_POINTER_AXIS.
+ *
+ * @return The axis value of this event
+ *
+ * @see libinput_event_pointer_get_axis_value_discrete
+ */
+double
+libinput_event_pointer_get_axis_value(struct libinput_event_pointer *event,
+				      enum libinput_pointer_axis axis);
+
+/**
+ * @ingroup event_pointer
+ *
+ * Return the source for a given axis event. Axis events (scroll events) can
+ * be caused by a hardware item such as a scroll wheel or emulated from
+ * other input sources, such as two-finger or edge scrolling on a
+ * touchpad.
+ *
+ * If the source is @ref LIBINPUT_POINTER_AXIS_SOURCE_FINGER, libinput
+ * guarantees that a scroll sequence is terminated with a scroll value of 0.
+ * A caller may use this information to decide on whether kinetic scrolling
+ * should be triggered on this scroll sequence.
+ * The coordinate system is identical to the cursor movement, i.e. a
+ * scroll value of 1 represents the equivalent relative motion of 1.
+ *
+ * If the source is @ref LIBINPUT_POINTER_AXIS_SOURCE_WHEEL, no terminating
+ * event is guaranteed (though it may happen).
+ * Scrolling is in discrete steps, the value is the angle the wheel moved
+ * in degrees. The default is 15 degrees per wheel click, but some mice may
+ * have differently grained wheels. It is up to the caller how to interpret
+ * such different step sizes.
+ *
+ * If the source is @ref LIBINPUT_POINTER_AXIS_SOURCE_CONTINUOUS, no
+ * terminating event is guaranteed (though it may happen).
+ * The coordinate system is identical to the cursor movement, i.e. a
+ * scroll value of 1 represents the equivalent relative motion of 1.
+ *
+ * For pointer events that are not of type @ref LIBINPUT_EVENT_POINTER_AXIS,
+ * this function returns 0.
+ *
+ * @note It is an application bug to call this function for events other than
+ * @ref LIBINPUT_EVENT_POINTER_AXIS.
+ *
+ * @return The source for this axis event
+ */
+enum libinput_pointer_axis_source
+libinput_event_pointer_get_axis_source(struct libinput_event_pointer *event);
+
+/**
+ * @ingroup event_pointer
+ *
+ * Return the axis value in discrete steps for a given axis event. How a
+ * value translates into a discrete step depends on the source.
+ *
+ * If the source is @ref LIBINPUT_POINTER_AXIS_SOURCE_WHEEL, the discrete
+ * value correspond to the number of physical mouse wheel clicks.
+ *
+ * If the source is @ref LIBINPUT_POINTER_AXIS_SOURCE_CONTINUOUS or @ref
+ * LIBINPUT_POINTER_AXIS_SOURCE_FINGER, the discrete value is always 0.
+ *
+ * @return The discrete value for the given event.
+ *
+ * @see libinput_event_pointer_get_axis_value
+ */
+double
+libinput_event_pointer_get_axis_value_discrete(struct libinput_event_pointer *event,
+					       enum libinput_pointer_axis axis);
+
+/**
+ * @ingroup event_pointer
+ *
+ * @return The generic libinput_event of this event
+ */
+struct libinput_event *
+libinput_event_pointer_get_base_event(struct libinput_event_pointer *event);
+
+/**
+ * @defgroup event_touch Touch events
+ *
+ * Events from absolute touch devices.
+ */
+
+/**
+ * @ingroup event_touch
+ *
+ * @return The event time for this event
+ */
+uint32_t
+libinput_event_touch_get_time(struct libinput_event_touch *event);
+
+/**
+ * @ingroup event_touch
+ *
+ * @return The event time for this event in microseconds
+ */
+uint64_t
+libinput_event_touch_get_time_usec(struct libinput_event_touch *event);
+
+/**
+ * @ingroup event_touch
+ *
+ * Get the slot of this touch event. See the kernel's multitouch
+ * protocol B documentation for more information.
+ *
+ * If the touch event has no assigned slot, for example if it is from a
+ * single touch device, this function returns -1.
+ *
+ * For events not of type @ref LIBINPUT_EVENT_TOUCH_DOWN, @ref
+ * LIBINPUT_EVENT_TOUCH_UP, @ref LIBINPUT_EVENT_TOUCH_MOTION or @ref
+ * LIBINPUT_EVENT_TOUCH_CANCEL, this function returns 0.
+ *
+ * @note It is an application bug to call this function for events of type
+ * other than @ref LIBINPUT_EVENT_TOUCH_DOWN, @ref LIBINPUT_EVENT_TOUCH_UP,
+ * @ref LIBINPUT_EVENT_TOUCH_MOTION or @ref LIBINPUT_EVENT_TOUCH_CANCEL.
+ *
+ * @return The slot of this touch event
+ */
+int32_t
+libinput_event_touch_get_slot(struct libinput_event_touch *event);
+
+/**
+ * @ingroup event_touch
+ *
+ * Get the seat slot of the touch event. A seat slot is a non-negative seat
+ * wide unique identifier of an active touch point.
+ *
+ * Events from single touch devices will be represented as one individual
+ * touch point per device.
+ *
+ * For events not of type @ref LIBINPUT_EVENT_TOUCH_DOWN, @ref
+ * LIBINPUT_EVENT_TOUCH_UP, @ref LIBINPUT_EVENT_TOUCH_MOTION or @ref
+ * LIBINPUT_EVENT_TOUCH_CANCEL, this function returns 0.
+ *
+ * @note It is an application bug to call this function for events of type
+ * other than @ref LIBINPUT_EVENT_TOUCH_DOWN, @ref LIBINPUT_EVENT_TOUCH_UP,
+ * @ref LIBINPUT_EVENT_TOUCH_MOTION or @ref LIBINPUT_EVENT_TOUCH_CANCEL.
+ *
+ * @return The seat slot of the touch event
+ */
+int32_t
+libinput_event_touch_get_seat_slot(struct libinput_event_touch *event);
+
+/**
+ * @ingroup event_touch
+ *
+ * Return the current absolute x coordinate of the touch event, in mm from
+ * the top left corner of the device. To get the corresponding output screen
+ * coordinate, use libinput_event_touch_get_x_transformed().
+ *
+ * For events not of type @ref LIBINPUT_EVENT_TOUCH_DOWN, @ref
+ * LIBINPUT_EVENT_TOUCH_MOTION, this function returns 0.
+ *
+ * @note It is an application bug to call this function for events of type
+ * other than @ref LIBINPUT_EVENT_TOUCH_DOWN or @ref
+ * LIBINPUT_EVENT_TOUCH_MOTION.
+ *
+ * @param event The libinput touch event
+ * @return The current absolute x coordinate
+ */
+double
+libinput_event_touch_get_x(struct libinput_event_touch *event);
+
+/**
+ * @ingroup event_touch
+ *
+ * Return the current absolute y coordinate of the touch event, in mm from
+ * the top left corner of the device. To get the corresponding output screen
+ * coordinate, use libinput_event_touch_get_y_transformed().
+ *
+ * For events not of type @ref LIBINPUT_EVENT_TOUCH_DOWN, @ref
+ * LIBINPUT_EVENT_TOUCH_MOTION, this function returns 0.
+ *
+ * @note It is an application bug to call this function for events of type
+ * other than @ref LIBINPUT_EVENT_TOUCH_DOWN or @ref
+ * LIBINPUT_EVENT_TOUCH_MOTION.
+ *
+ * @param event The libinput touch event
+ * @return The current absolute y coordinate
+ */
+double
+libinput_event_touch_get_y(struct libinput_event_touch *event);
+
+/**
+ * @ingroup event_touch
+ *
+ * Return the current absolute x coordinate of the touch event, transformed to
+ * screen coordinates.
+ *
+ * For events not of type @ref LIBINPUT_EVENT_TOUCH_DOWN, @ref
+ * LIBINPUT_EVENT_TOUCH_MOTION, this function returns 0.
+ *
+ * @note It is an application bug to call this function for events of type
+ * other than @ref LIBINPUT_EVENT_TOUCH_DOWN or @ref
+ * LIBINPUT_EVENT_TOUCH_MOTION.
+ *
+ * @param event The libinput touch event
+ * @param width The current output screen width
+ * @return The current absolute x coordinate transformed to a screen coordinate
+ */
+double
+libinput_event_touch_get_x_transformed(struct libinput_event_touch *event,
+				       uint32_t width);
+
+/**
+ * @ingroup event_touch
+ *
+ * Return the current absolute y coordinate of the touch event, transformed to
+ * screen coordinates.
+ *
+ * For events not of type @ref LIBINPUT_EVENT_TOUCH_DOWN, @ref
+ * LIBINPUT_EVENT_TOUCH_MOTION, this function returns 0.
+ *
+ * @note It is an application bug to call this function for events of type
+ * other than @ref LIBINPUT_EVENT_TOUCH_DOWN or @ref
+ * LIBINPUT_EVENT_TOUCH_MOTION.
+ *
+ * @param event The libinput touch event
+ * @param height The current output screen height
+ * @return The current absolute y coordinate transformed to a screen coordinate
+ */
+double
+libinput_event_touch_get_y_transformed(struct libinput_event_touch *event,
+				       uint32_t height);
+
+/**
+ * @ingroup event_touch
+ *
+ * @return The generic libinput_event of this event
+ */
+struct libinput_event *
+libinput_event_touch_get_base_event(struct libinput_event_touch *event);
+
+/**
+ * @defgroup event_gesture Gesture events
+ *
+ * Gesture events are generated when a gesture is recognized on a touchpad.
+ *
+ * Gesture sequences always start with a LIBINPUT_EVENT_GESTURE_FOO_START
+ * event. All following gesture events will be of the
+ * LIBINPUT_EVENT_GESTURE_FOO_UPDATE type until a
+ * LIBINPUT_EVENT_GESTURE_FOO_END is generated which signals the end of the
+ * gesture.
+ *
+ * See @ref gestures for more information on gesture handling.
+ */
+
+/**
+ * @ingroup event_gesture
+ *
+ * @return The event time for this event
+ */
+uint32_t
+libinput_event_gesture_get_time(struct libinput_event_gesture *event);
+
+/**
+ * @ingroup event_gesture
+ *
+ * @return The event time for this event in microseconds
+ */
+uint64_t
+libinput_event_gesture_get_time_usec(struct libinput_event_gesture *event);
+
+/**
+ * @ingroup event_gesture
+ *
+ * @return The generic libinput_event of this event
+ */
+struct libinput_event *
+libinput_event_gesture_get_base_event(struct libinput_event_gesture *event);
+
+/**
+ * @ingroup event_gesture
+ *
+ * Return the number of fingers used for a gesture. This can be used e.g.
+ * to differentiate between 3 or 4 finger swipes.
+ *
+ * This function can be called on all gesture events and the returned finger
+ * count value will not change during a sequence.
+ *
+ * @return the number of fingers used for a gesture
+ */
+int
+libinput_event_gesture_get_finger_count(struct libinput_event_gesture *event);
+
+/**
+ * @ingroup event_gesture
+ *
+ * Return if the gesture ended normally, or if it was cancelled.
+ * For gesture events that are not of type
+ * @ref LIBINPUT_EVENT_GESTURE_SWIPE_END or
+ * @ref LIBINPUT_EVENT_GESTURE_PINCH_END, this function returns 0.
+ *
+ * @note It is an application bug to call this function for events other than
+ * @ref LIBINPUT_EVENT_GESTURE_SWIPE_END or
+ * @ref LIBINPUT_EVENT_GESTURE_PINCH_END.
+ *
+ * @return 0 or 1, with 1 indicating that the gesture was cancelled.
+ */
+int
+libinput_event_gesture_get_cancelled(struct libinput_event_gesture *event);
+
+/**
+ * @ingroup event_gesture
+ *
+ * Return the delta between the last event and the current event. For gesture
+ * events that are not of type @ref LIBINPUT_EVENT_GESTURE_SWIPE_UPDATE or
+ * @ref LIBINPUT_EVENT_GESTURE_PINCH_UPDATE, this function returns 0.
+ *
+ * If a device employs pointer acceleration, the delta returned by this
+ * function is the accelerated delta.
+ *
+ * Relative motion deltas are normalized to represent those of a device with
+ * 1000dpi resolution. See @ref motion_normalization for more details.
+ *
+ * @return the relative x movement since the last event
+ */
+double
+libinput_event_gesture_get_dx(struct libinput_event_gesture *event);
+
+/**
+ * @ingroup event_gesture
+ *
+ * Return the delta between the last event and the current event. For gesture
+ * events that are not of type @ref LIBINPUT_EVENT_GESTURE_SWIPE_UPDATE or
+ * @ref LIBINPUT_EVENT_GESTURE_PINCH_UPDATE, this function returns 0.
+ *
+ * If a device employs pointer acceleration, the delta returned by this
+ * function is the accelerated delta.
+ *
+ * Relative motion deltas are normalized to represent those of a device with
+ * 1000dpi resolution. See @ref motion_normalization for more details.
+ *
+ * @return the relative y movement since the last event
+ */
+double
+libinput_event_gesture_get_dy(struct libinput_event_gesture *event);
+
+/**
+ * @ingroup event_gesture
+ *
+ * Return the relative delta of the unaccelerated motion vector of the
+ * current event. For gesture events that are not of type
+ * @ref LIBINPUT_EVENT_GESTURE_SWIPE_UPDATE or
+ * @ref LIBINPUT_EVENT_GESTURE_PINCH_UPDATE, this function returns 0.
+ *
+ * Relative unaccelerated motion deltas are normalized to represent those of a
+ * device with 1000dpi resolution. See @ref motion_normalization for more
+ * details. Note that unaccelerated events are not equivalent to 'raw' events
+ * as read from the device.
+ *
+ * Any rotation applied to the device also applies to gesture motion
+ * (see libinput_device_config_rotation_set_angle()).
+ *
+ * @return the unaccelerated relative x movement since the last event
+ */
+double
+libinput_event_gesture_get_dx_unaccelerated(
+	struct libinput_event_gesture *event);
+
+/**
+ * @ingroup event_gesture
+ *
+ * Return the relative delta of the unaccelerated motion vector of the
+ * current event. For gesture events that are not of type
+ * @ref LIBINPUT_EVENT_GESTURE_SWIPE_UPDATE or
+ * @ref LIBINPUT_EVENT_GESTURE_PINCH_UPDATE, this function returns 0.
+ *
+ * Relative unaccelerated motion deltas are normalized to represent those of a
+ * device with 1000dpi resolution. See @ref motion_normalization for more
+ * details. Note that unaccelerated events are not equivalent to 'raw' events
+ * as read from the device.
+ *
+ * Any rotation applied to the device also applies to gesture motion
+ * (see libinput_device_config_rotation_set_angle()).
+ *
+ * @return the unaccelerated relative y movement since the last event
+ */
+double
+libinput_event_gesture_get_dy_unaccelerated(
+	struct libinput_event_gesture *event);
+
+/**
+ * @ingroup event_gesture
+ *
+ * Return the absolute scale of a pinch gesture, the scale is the division
+ * of the current distance between the fingers and the distance at the start
+ * of the gesture. The scale begins at 1.0, and if e.g. the fingers moved
+ * together by 50% then the scale will become 0.5, if they move twice as far
+ * apart as initially the scale becomes 2.0, etc.
+ *
+ * For gesture events that are of type @ref
+ * LIBINPUT_EVENT_GESTURE_PINCH_BEGIN, this function returns 1.0.
+ *
+ * For gesture events that are of type @ref
+ * LIBINPUT_EVENT_GESTURE_PINCH_END, this function returns the scale value
+ * of the most recent @ref LIBINPUT_EVENT_GESTURE_PINCH_UPDATE event (if
+ * any) or 1.0 otherwise.
+ *
+ * For all other events this function returns 0.
+ *
+ * @note It is an application bug to call this function for events other than
+ * @ref LIBINPUT_EVENT_GESTURE_PINCH_BEGIN, @ref
+ * LIBINPUT_EVENT_GESTURE_PINCH_END or
+ * @ref LIBINPUT_EVENT_GESTURE_PINCH_UPDATE.
+ *
+ * @return the absolute scale of a pinch gesture
+ */
+double
+libinput_event_gesture_get_scale(struct libinput_event_gesture *event);
+
+/**
+ * @ingroup event_gesture
+ *
+ * Return the angle delta in degrees between the last and the current @ref
+ * LIBINPUT_EVENT_GESTURE_PINCH_UPDATE event. For gesture events that
+ * are not of type @ref LIBINPUT_EVENT_GESTURE_PINCH_UPDATE, this
+ * function returns 0.
+ *
+ * The angle delta is defined as the change in angle of the line formed by
+ * the 2 fingers of a pinch gesture. Clockwise rotation is represented
+ * by a positive delta, counter-clockwise by a negative delta. If e.g. the
+ * fingers are on the 12 and 6 location of a clock face plate and they move
+ * to the 1 resp. 7 location in a single event then the angle delta is
+ * 30 degrees.
+ *
+ * If more than two fingers are present, the angle represents the rotation
+ * around the center of gravity. The calculation of the center of gravity is
+ * implementation-dependent.
+ *
+ * @return the angle delta since the last event
+ */
+double
+libinput_event_gesture_get_angle_delta(struct libinput_event_gesture *event);
+
+/**
+ * @defgroup event_tablet Tablet events
+ *
+ * Events that come from tools on tablet devices. For events from the pad,
+ * see @ref event_tablet_pad.
+ *
+ * Events from tablet devices are exposed by two interfaces, tools and pads.
+ * Tool events originate (usually) from a stylus-like device, pad events
+ * reflect any events originating from the physical tablet itself.
+ *
+ * Note that many tablets support touch events. These are exposed through
+ * the @ref LIBINPUT_DEVICE_CAP_POINTER interface (for external touchpad-like
+ * devices such as the Wacom Intuos series) or @ref
+ * LIBINPUT_DEVICE_CAP_TOUCH interface (for built-in touchscreen-like
+ * devices such as the Wacom Cintiq series).
+ */
+
+/**
+ * @ingroup event_tablet
+ *
+ * @return The generic libinput_event of this event
+ */
+struct libinput_event *
+libinput_event_tablet_tool_get_base_event(struct libinput_event_tablet_tool *event);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Check if the x axis was updated in this event.
+ * For events that are not of type @ref LIBINPUT_EVENT_TABLET_TOOL_AXIS,
+ * @ref LIBINPUT_EVENT_TABLET_TOOL_TIP, or
+ * @ref LIBINPUT_EVENT_TABLET_TOOL_PROXIMITY, this function returns 0.
+ *
+ * @note It is an application bug to call this function for events other
+ * than @ref LIBINPUT_EVENT_TABLET_TOOL_AXIS, @ref
+ * LIBINPUT_EVENT_TABLET_TOOL_TIP, or @ref
+ * LIBINPUT_EVENT_TABLET_TOOL_PROXIMITY, or @ref
+ * LIBINPUT_EVENT_TABLET_TOOL_BUTTON.
+ *
+ * @param event The libinput tablet tool event
+ * @return 1 if the axis was updated or 0 otherwise
+ */
+int
+libinput_event_tablet_tool_x_has_changed(
+				struct libinput_event_tablet_tool *event);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Check if the y axis was updated in this event.
+ * For events that are not of type @ref LIBINPUT_EVENT_TABLET_TOOL_AXIS,
+ * @ref LIBINPUT_EVENT_TABLET_TOOL_TIP, or
+ * @ref LIBINPUT_EVENT_TABLET_TOOL_PROXIMITY, this function returns 0.
+ *
+ * @note It is an application bug to call this function for events other
+ * than @ref LIBINPUT_EVENT_TABLET_TOOL_AXIS, @ref
+ * LIBINPUT_EVENT_TABLET_TOOL_TIP, or @ref
+ * LIBINPUT_EVENT_TABLET_TOOL_PROXIMITY, or @ref
+ * LIBINPUT_EVENT_TABLET_TOOL_BUTTON.
+ *
+ * @param event The libinput tablet tool event
+ * @return 1 if the axis was updated or 0 otherwise
+ */
+int
+libinput_event_tablet_tool_y_has_changed(
+				struct libinput_event_tablet_tool *event);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Check if the pressure axis was updated in this event.
+ * For events that are not of type @ref LIBINPUT_EVENT_TABLET_TOOL_AXIS,
+ * @ref LIBINPUT_EVENT_TABLET_TOOL_TIP, or
+ * @ref LIBINPUT_EVENT_TABLET_TOOL_PROXIMITY, this function returns 0.
+ *
+ * @note It is an application bug to call this function for events other
+ * than @ref LIBINPUT_EVENT_TABLET_TOOL_AXIS, @ref
+ * LIBINPUT_EVENT_TABLET_TOOL_TIP, or @ref
+ * LIBINPUT_EVENT_TABLET_TOOL_PROXIMITY, or @ref
+ * LIBINPUT_EVENT_TABLET_TOOL_BUTTON.
+ *
+ * @param event The libinput tablet tool event
+ * @return 1 if the axis was updated or 0 otherwise
+ */
+int
+libinput_event_tablet_tool_pressure_has_changed(
+				struct libinput_event_tablet_tool *event);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Check if the distance axis was updated in this event.
+ * For events that are not of type @ref LIBINPUT_EVENT_TABLET_TOOL_AXIS,
+ * @ref LIBINPUT_EVENT_TABLET_TOOL_TIP, or
+ * @ref LIBINPUT_EVENT_TABLET_TOOL_PROXIMITY, this function returns 0.
+ * For tablet tool events of type @ref LIBINPUT_EVENT_TABLET_TOOL_PROXIMITY,
+ * this function always returns 1.
+ *
+ * @note It is an application bug to call this function for events other
+ * than @ref LIBINPUT_EVENT_TABLET_TOOL_AXIS, @ref
+ * LIBINPUT_EVENT_TABLET_TOOL_TIP, or @ref
+ * LIBINPUT_EVENT_TABLET_TOOL_PROXIMITY, or @ref
+ * LIBINPUT_EVENT_TABLET_TOOL_BUTTON.
+ *
+ * @param event The libinput tablet tool event
+ * @return 1 if the axis was updated or 0 otherwise
+ */
+int
+libinput_event_tablet_tool_distance_has_changed(
+				struct libinput_event_tablet_tool *event);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Check if the tilt x axis was updated in this event.
+ * For events that are not of type @ref LIBINPUT_EVENT_TABLET_TOOL_AXIS,
+ * @ref LIBINPUT_EVENT_TABLET_TOOL_TIP, or
+ * @ref LIBINPUT_EVENT_TABLET_TOOL_PROXIMITY, this function returns 0.
+ *
+ * @note It is an application bug to call this function for events other
+ * than @ref LIBINPUT_EVENT_TABLET_TOOL_AXIS, @ref
+ * LIBINPUT_EVENT_TABLET_TOOL_TIP, or @ref
+ * LIBINPUT_EVENT_TABLET_TOOL_PROXIMITY, or @ref
+ * LIBINPUT_EVENT_TABLET_TOOL_BUTTON.
+ *
+ * @param event The libinput tablet tool event
+ * @return 1 if the axis was updated or 0 otherwise
+ */
+int
+libinput_event_tablet_tool_tilt_x_has_changed(
+				struct libinput_event_tablet_tool *event);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Check if the tilt y axis was updated in this event.
+ * For events that are not of type @ref LIBINPUT_EVENT_TABLET_TOOL_AXIS,
+ * @ref LIBINPUT_EVENT_TABLET_TOOL_TIP, or
+ * @ref LIBINPUT_EVENT_TABLET_TOOL_PROXIMITY, this function returns 0.
+ *
+ * @note It is an application bug to call this function for events other
+ * than @ref LIBINPUT_EVENT_TABLET_TOOL_AXIS, @ref
+ * LIBINPUT_EVENT_TABLET_TOOL_TIP, or @ref
+ * LIBINPUT_EVENT_TABLET_TOOL_PROXIMITY, or @ref
+ * LIBINPUT_EVENT_TABLET_TOOL_BUTTON.
+ *
+ * @param event The libinput tablet tool event
+ * @return 1 if the axis was updated or 0 otherwise
+ */
+int
+libinput_event_tablet_tool_tilt_y_has_changed(
+				struct libinput_event_tablet_tool *event);
+/**
+ * @ingroup event_tablet
+ *
+ * Check if the z-rotation axis was updated in this event.
+ * For events that are not of type @ref LIBINPUT_EVENT_TABLET_TOOL_AXIS,
+ * @ref LIBINPUT_EVENT_TABLET_TOOL_TIP, or
+ * @ref LIBINPUT_EVENT_TABLET_TOOL_PROXIMITY, this function returns 0.
+ *
+ * @note It is an application bug to call this function for events other
+ * than @ref LIBINPUT_EVENT_TABLET_TOOL_AXIS, @ref
+ * LIBINPUT_EVENT_TABLET_TOOL_TIP, or @ref
+ * LIBINPUT_EVENT_TABLET_TOOL_PROXIMITY, or @ref
+ * LIBINPUT_EVENT_TABLET_TOOL_BUTTON.
+ *
+ * @param event The libinput tablet tool event
+ * @return 1 if the axis was updated or 0 otherwise
+ */
+int
+libinput_event_tablet_tool_rotation_has_changed(
+				struct libinput_event_tablet_tool *event);
+/**
+ * @ingroup event_tablet
+ *
+ * Check if the slider axis was updated in this event.
+ * For events that are not of type @ref LIBINPUT_EVENT_TABLET_TOOL_AXIS,
+ * @ref LIBINPUT_EVENT_TABLET_TOOL_TIP, or
+ * @ref LIBINPUT_EVENT_TABLET_TOOL_PROXIMITY, this function returns 0.
+ *
+ * @note It is an application bug to call this function for events other
+ * than @ref LIBINPUT_EVENT_TABLET_TOOL_AXIS, @ref
+ * LIBINPUT_EVENT_TABLET_TOOL_TIP, or @ref
+ * LIBINPUT_EVENT_TABLET_TOOL_PROXIMITY, or @ref
+ * LIBINPUT_EVENT_TABLET_TOOL_BUTTON.
+ *
+ * @param event The libinput tablet tool event
+ * @return 1 if the axis was updated or 0 otherwise
+ */
+int
+libinput_event_tablet_tool_slider_has_changed(
+				struct libinput_event_tablet_tool *event);
+/**
+ * @ingroup event_tablet
+ *
+ * Check if the wheel axis was updated in this event.
+ * For events that are not of type @ref LIBINPUT_EVENT_TABLET_TOOL_AXIS,
+ * @ref LIBINPUT_EVENT_TABLET_TOOL_TIP, or
+ * @ref LIBINPUT_EVENT_TABLET_TOOL_PROXIMITY, this function returns 0.
+ *
+ * @note It is an application bug to call this function for events other
+ * than @ref LIBINPUT_EVENT_TABLET_TOOL_AXIS, @ref
+ * LIBINPUT_EVENT_TABLET_TOOL_TIP, or @ref
+ * LIBINPUT_EVENT_TABLET_TOOL_PROXIMITY, or @ref
+ * LIBINPUT_EVENT_TABLET_TOOL_BUTTON.
+ *
+ * @param event The libinput tablet tool event
+ * @return 1 if the axis was updated or 0 otherwise
+ */
+int
+libinput_event_tablet_tool_wheel_has_changed(
+				struct libinput_event_tablet_tool *event);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Returns the X coordinate of the tablet tool, in mm from the top left
+ * corner of the tablet in its current logical orientation. Use
+ * libinput_event_tablet_tool_get_x_transformed() for transforming the axis
+ * value into a different coordinate space.
+ *
+ * @note On some devices, returned value may be negative or larger than the
+ * width of the device. See @ref tablet-bounds for more details.
+ *
+ * @param event The libinput tablet tool event
+ * @return The current value of the the axis
+ */
+double
+libinput_event_tablet_tool_get_x(struct libinput_event_tablet_tool *event);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Returns the Y coordinate of the tablet tool, in mm from the top left
+ * corner of the tablet in its current logical orientation. Use
+ * libinput_event_tablet_tool_get_y_transformed() for transforming the axis
+ * value into a different coordinate space.
+ *
+ * @note On some devices, returned value may be negative or larger than the
+ * width of the device. See @ref tablet-bounds for more details.
+ *
+ * @param event The libinput tablet tool event
+ * @return The current value of the the axis
+ */
+double
+libinput_event_tablet_tool_get_y(struct libinput_event_tablet_tool *event);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Return the delta between the last event and the current event.
+ * If the tool employs pointer acceleration, the delta returned by this
+ * function is the accelerated delta.
+ *
+ * This value is in screen coordinate space, the delta is to be interpreted
+ * like the return value of libinput_event_pointer_get_dx().
+ * See @ref tablet-relative-motion for more details.
+ *
+ * @param event The libinput tablet event
+ * @return The relative x movement since the last event
+ */
+double
+libinput_event_tablet_tool_get_dx(struct libinput_event_tablet_tool *event);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Return the delta between the last event and the current event.
+ * If the tool employs pointer acceleration, the delta returned by this
+ * function is the accelerated delta.
+ *
+ * This value is in screen coordinate space, the delta is to be interpreted
+ * like the return value of libinput_event_pointer_get_dx().
+ * See @ref tablet-relative-motion for more details.
+ *
+ * @param event The libinput tablet event
+ * @return The relative y movement since the last event
+ */
+double
+libinput_event_tablet_tool_get_dy(struct libinput_event_tablet_tool *event);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Returns the current pressure being applied on the tool in use, normalized
+ * to the range [0, 1].
+ *
+ * If this axis does not exist on the current tool, this function returns 0.
+ *
+ * @param event The libinput tablet tool event
+ * @return The current value of the the axis
+ */
+double
+libinput_event_tablet_tool_get_pressure(struct libinput_event_tablet_tool *event);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Returns the current distance from the tablet's sensor, normalized to the
+ * range [0, 1].
+ *
+ * If this axis does not exist on the current tool, this function returns 0.
+ *
+ * @param event The libinput tablet tool event
+ * @return The current value of the the axis
+ */
+double
+libinput_event_tablet_tool_get_distance(struct libinput_event_tablet_tool *event);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Returns the current tilt along the X axis of the tablet's current logical
+ * orientation, in degrees off the tablet's z axis. That is, if the tool is
+ * perfectly orthogonal to the tablet, the tilt angle is 0. When the top
+ * tilts towards the logical top/left of the tablet, the x/y tilt angles are
+ * negative, if the top tilts towards the logical bottom/right of the
+ * tablet, the x/y tilt angles are positive.
+ *
+ * If this axis does not exist on the current tool, this function returns 0.
+ *
+ * @param event The libinput tablet tool event
+ * @return The current value of the axis in degrees
+ */
+double
+libinput_event_tablet_tool_get_tilt_x(struct libinput_event_tablet_tool *event);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Returns the current tilt along the Y axis of the tablet's current logical
+ * orientation, in degrees off the tablet's z axis. That is, if the tool is
+ * perfectly orthogonal to the tablet, the tilt angle is 0. When the top
+ * tilts towards the logical top/left of the tablet, the x/y tilt angles are
+ * negative, if the top tilts towards the logical bottom/right of the
+ * tablet, the x/y tilt angles are positive.
+ *
+ * If this axis does not exist on the current tool, this function returns 0.
+ *
+ * @param event The libinput tablet tool event
+ * @return The current value of the the axis in degrees
+ */
+double
+libinput_event_tablet_tool_get_tilt_y(struct libinput_event_tablet_tool *event);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Returns the current z rotation of the tool in degrees, clockwise from the
+ * tool's logical neutral position.
+ *
+ * For tools of type @ref LIBINPUT_TABLET_TOOL_TYPE_MOUSE and @ref
+ * LIBINPUT_TABLET_TOOL_TYPE_LENS the logical neutral position is
+ * pointing to the current logical north of the tablet. For tools of type @ref
+ * LIBINPUT_TABLET_TOOL_TYPE_BRUSH, the logical neutral position is with the
+ * buttons pointing up.
+ *
+ * If this axis does not exist on the current tool, this function returns 0.
+ *
+ * @param event The libinput tablet tool event
+ * @return The current value of the the axis
+ */
+double
+libinput_event_tablet_tool_get_rotation(struct libinput_event_tablet_tool *event);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Returns the current position of the slider on the tool, normalized to the
+ * range [-1, 1]. The logical zero is the neutral position of the slider, or
+ * the logical center of the axis. This axis is available on e.g. the Wacom
+ * Airbrush.
+ *
+ * If this axis does not exist on the current tool, this function returns 0.
+ *
+ * @param event The libinput tablet tool event
+ * @return The current value of the the axis
+ */
+double
+libinput_event_tablet_tool_get_slider_position(struct libinput_event_tablet_tool *event);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Return the delta for the wheel in degrees.
+ *
+ * @param event The libinput tablet tool event
+ * @return The delta of the wheel, in degrees, compared to the last event
+ *
+ * @see libinput_event_tablet_tool_get_wheel_delta_discrete
+ */
+double
+libinput_event_tablet_tool_get_wheel_delta(
+				   struct libinput_event_tablet_tool *event);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Return the delta for the wheel in discrete steps (e.g. wheel clicks).
+
+ * @param event The libinput tablet tool event
+ * @return The delta of the wheel, in discrete steps, compared to the last event
+ *
+ * @see libinput_event_tablet_tool_get_wheel_delta_discrete
+ */
+int
+libinput_event_tablet_tool_get_wheel_delta_discrete(
+				    struct libinput_event_tablet_tool *event);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Return the current absolute x coordinate of the tablet tool event,
+ * transformed to screen coordinates.
+ *
+ * @note This function may be called for a specific axis even if
+ * libinput_event_tablet_tool_*_has_changed() returns 0 for that axis.
+ * libinput always includes all device axes in the event.
+ *
+ * @note On some devices, returned value may be negative or larger than the
+ * width of the device. See @ref tablet-bounds for more details.
+ *
+ * @param event The libinput tablet tool event
+ * @param width The current output screen width
+ * @return the current absolute x coordinate transformed to a screen coordinate
+ */
+double
+libinput_event_tablet_tool_get_x_transformed(struct libinput_event_tablet_tool *event,
+					     uint32_t width);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Return the current absolute y coordinate of the tablet tool event,
+ * transformed to screen coordinates.
+ *
+ * @note This function may be called for a specific axis even if
+ * libinput_event_tablet_tool_*_has_changed() returns 0 for that axis.
+ * libinput always includes all device axes in the event.
+ *
+ * @note On some devices, returned value may be negative or larger than the
+ * width of the device. See @ref tablet-bounds for more details.
+ *
+ * @param event The libinput tablet tool event
+ * @param height The current output screen height
+ * @return the current absolute y coordinate transformed to a screen coordinate
+ */
+double
+libinput_event_tablet_tool_get_y_transformed(struct libinput_event_tablet_tool *event,
+					     uint32_t height);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Returns the tool that was in use during this event.
+ *
+ * The returned tablet tool is not refcounted and may become invalid after
+ * the next call to libinput. Use libinput_tablet_tool_ref() and
+ * libinput_tablet_tool_unref() to continue using the handle outside of the
+ * immediate scope.
+ *
+ * If the caller holds at least one reference, this struct is used
+ * whenever the tools enters proximity again.
+  *
+ * @note Physical tool tracking requires hardware support. If unavailable,
+ * libinput creates one tool per type per tablet. See @ref
+ * tablet-serial-numbers for more details.
+ *
+ * @param event The libinput tablet tool event
+ * @return The new tool triggering this event
+ */
+struct libinput_tablet_tool *
+libinput_event_tablet_tool_get_tool(struct libinput_event_tablet_tool *event);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Returns the new proximity state of a tool from a proximity event.
+ * Used to check whether or not a tool came in or out of proximity during an
+ * event of type @ref LIBINPUT_EVENT_TABLET_TOOL_PROXIMITY.
+ *
+ * See @ref tablet-fake-proximity for recommendations on proximity handling.
+ *
+ * @param event The libinput tablet tool event
+ * @return The new proximity state of the tool from the event.
+ */
+enum libinput_tablet_tool_proximity_state
+libinput_event_tablet_tool_get_proximity_state(struct libinput_event_tablet_tool *event);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Returns the new tip state of a tool from a tip event.
+ * Used to check whether or not a tool came in contact with the tablet
+ * surface or left contact with the tablet surface during an
+ * event of type @ref LIBINPUT_EVENT_TABLET_TOOL_TIP.
+ *
+ * @param event The libinput tablet tool event
+ * @return The new tip state of the tool from the event.
+ */
+enum libinput_tablet_tool_tip_state
+libinput_event_tablet_tool_get_tip_state(struct libinput_event_tablet_tool *event);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Return the button that triggered this event.  For events that are not of
+ * type @ref LIBINPUT_EVENT_TABLET_TOOL_BUTTON, this function returns 0.
+ *
+ * @note It is an application bug to call this function for events other than
+ * @ref LIBINPUT_EVENT_TABLET_TOOL_BUTTON.
+ *
+ * @param event The libinput tablet tool event
+ * @return the button triggering this event
+ */
+uint32_t
+libinput_event_tablet_tool_get_button(struct libinput_event_tablet_tool *event);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Return the button state of the event.
+ *
+ * @note It is an application bug to call this function for events other than
+ * @ref LIBINPUT_EVENT_TABLET_TOOL_BUTTON.
+ *
+ * @param event The libinput tablet tool event
+ * @return the button state triggering this event
+ */
+enum libinput_button_state
+libinput_event_tablet_tool_get_button_state(struct libinput_event_tablet_tool *event);
+
+/**
+ * @ingroup event_tablet
+ *
+ * For the button of a @ref LIBINPUT_EVENT_TABLET_TOOL_BUTTON event, return the total
+ * number of buttons pressed on all devices on the associated seat after the
+ * the event was triggered.
+ *
+ " @note It is an application bug to call this function for events other than
+ * @ref LIBINPUT_EVENT_TABLET_TOOL_BUTTON. For other events, this function returns 0.
+ *
+ * @param event The libinput tablet tool event
+ * @return the seat wide pressed button count for the key of this event
+ */
+uint32_t
+libinput_event_tablet_tool_get_seat_button_count(struct libinput_event_tablet_tool *event);
+
+/**
+ * @ingroup event_tablet
+ *
+ * @param event The libinput tablet tool event
+ * @return The event time for this event
+ */
+uint32_t
+libinput_event_tablet_tool_get_time(struct libinput_event_tablet_tool *event);
+
+/**
+ * @ingroup event_tablet
+ *
+ * @param event The libinput tablet tool event
+ * @return The event time for this event in microseconds
+ */
+uint64_t
+libinput_event_tablet_tool_get_time_usec(struct libinput_event_tablet_tool *event);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Return the tool type for a tool object, see @ref
+ * tablet-tool-types for details.
+ *
+ * @param tool The libinput tool
+ * @return The tool type for this tool object
+ *
+ * @see libinput_tablet_tool_get_tool_id
+ */
+enum libinput_tablet_tool_type
+libinput_tablet_tool_get_type(struct libinput_tablet_tool *tool);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Return the tool ID for a tool object. If nonzero, this number identifies
+ * the specific type of the tool with more precision than the type returned in
+ * libinput_tablet_tool_get_type(), see @ref tablet-tool-types. Not all
+ * tablets support a tool ID.
+ *
+ * Tablets known to support tool IDs include the Wacom Intuos 3, 4, 5, Wacom
+ * Cintiq and Wacom Intuos Pro series.
+ *
+ * @param tool The libinput tool
+ * @return The tool ID for this tool object or 0 if none is provided
+ *
+ * @see libinput_tablet_tool_get_type
+ */
+uint64_t
+libinput_tablet_tool_get_tool_id(struct libinput_tablet_tool *tool);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Increment the reference count of the tool by one. A tool is destroyed
+ * whenever the reference count reaches 0. See libinput_tablet_tool_unref().
+ *
+ * @param tool The tool to increment the ref count of
+ * @return The passed tool
+ *
+ * @see libinput_tablet_tool_unref
+ */
+struct libinput_tablet_tool *
+libinput_tablet_tool_ref(struct libinput_tablet_tool *tool);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Decrement the reference count of the tool by one. When the reference
+ * count of the tool reaches 0, the memory allocated for the tool will be
+ * freed.
+ *
+ * @param tool The tool to decrement the ref count of
+ * @return NULL if the tool was destroyed otherwise the passed tool
+ *
+ * @see libinput_tablet_tool_ref
+ */
+struct libinput_tablet_tool *
+libinput_tablet_tool_unref(struct libinput_tablet_tool *tool);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Return whether the tablet tool supports pressure.
+ *
+ * @param tool The tool to check the axis capabilities of
+ * @return Nonzero if the axis is available, zero otherwise.
+ */
+int
+libinput_tablet_tool_has_pressure(struct libinput_tablet_tool *tool);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Return whether the tablet tool supports distance.
+ *
+ * @param tool The tool to check the axis capabilities of
+ * @return Nonzero if the axis is available, zero otherwise.
+ */
+int
+libinput_tablet_tool_has_distance(struct libinput_tablet_tool *tool);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Return whether the tablet tool supports tilt.
+ *
+ * @param tool The tool to check the axis capabilities of
+ * @return Nonzero if the axis is available, zero otherwise.
+ */
+int
+libinput_tablet_tool_has_tilt(struct libinput_tablet_tool *tool);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Return whether the tablet tool supports z-rotation.
+ *
+ * @param tool The tool to check the axis capabilities of
+ * @return Nonzero if the axis is available, zero otherwise.
+ */
+int
+libinput_tablet_tool_has_rotation(struct libinput_tablet_tool *tool);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Return whether the tablet tool has a slider axis.
+ *
+ * @param tool The tool to check the axis capabilities of
+ * @return Nonzero if the axis is available, zero otherwise.
+ */
+int
+libinput_tablet_tool_has_slider(struct libinput_tablet_tool *tool);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Return whether the tablet tool has a relative wheel.
+ *
+ * @param tool The tool to check the axis capabilities of
+ * @return Nonzero if the axis is available, zero otherwise.
+ */
+int
+libinput_tablet_tool_has_wheel(struct libinput_tablet_tool *tool);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Check if a tablet tool has a button with the
+ * passed-in code (see linux/input.h).
+ *
+ * @param tool A tablet tool
+ * @param code button code to check for
+ *
+ * @return 1 if the tool supports this button code, 0 if it does not
+ */
+int
+libinput_tablet_tool_has_button(struct libinput_tablet_tool *tool,
+				uint32_t code);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Return nonzero if the physical tool can be uniquely identified by
+ * libinput, or nonzero otherwise. If a tool can be uniquely identified,
+ * keeping a reference to the tool allows tracking the tool across
+ * proximity out sequences and across compatible tablets.
+ * See @ref tablet-serial-numbers for more details.
+ *
+ * @param tool A tablet tool
+ * @return 1 if the tool can be uniquely identified, 0 otherwise.
+ *
+ * @see libinput_tablet_tool_get_serial
+ */
+int
+libinput_tablet_tool_is_unique(struct libinput_tablet_tool *tool);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Return the serial number of a tool. If the tool does not report a serial
+ * number, this function returns zero. See @ref tablet-serial-numbers for
+ * details.
+ *
+ * @param tool The libinput tool
+ * @return The tool serial number
+ *
+ * @see libinput_tablet_tool_is_unique
+ */
+uint64_t
+libinput_tablet_tool_get_serial(struct libinput_tablet_tool *tool);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Return the user data associated with a tool object. libinput does
+ * not manage, look at, or modify this data. The caller must ensure the
+ * data is valid.
+ *
+ * @param tool The libinput tool
+ * @return The user data associated with the tool object
+ */
+void *
+libinput_tablet_tool_get_user_data(struct libinput_tablet_tool *tool);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Set the user data associated with a tool object, if any.
+ *
+ * @param tool The libinput tool
+ * @param user_data The user data to associate with the tool object
+ */
+void
+libinput_tablet_tool_set_user_data(struct libinput_tablet_tool *tool,
+				   void *user_data);
+
+/**
+ * @defgroup event_tablet_pad Tablet pad events
+ *
+ * Events that come from the pad of tablet devices.  For events from the
+ * tablet tools, see @ref event_tablet.
+ */
+
+/**
+ * @ingroup event_tablet_pad
+ *
+ * @return The generic libinput_event of this event
+ */
+struct libinput_event *
+libinput_event_tablet_pad_get_base_event(struct libinput_event_tablet_pad *event);
+
+/**
+ * @ingroup event_tablet_pad
+ *
+ * Returns the current position of the ring, in degrees counterclockwise
+ * from the northern-most point of the ring in the tablet's current logical
+ * orientation.
+ *
+ * If the source is @ref LIBINPUT_TABLET_PAD_RING_SOURCE_FINGER,
+ * libinput sends a terminating event with a ring value of -1 when the
+ * finger is lifted from the ring. A caller may use this information to e.g.
+ * determine if kinetic scrolling should be triggered.
+ *
+ * @note It is an application bug to call this function for events other than
+ * @ref LIBINPUT_EVENT_TABLET_PAD_RING.  For other events, this function
+ * returns 0.
+ *
+ * @param event The libinput tablet pad event
+ * @return The current value of the the axis
+ * @retval -1 The finger was lifted
+ */
+double
+libinput_event_tablet_pad_get_ring_position(struct libinput_event_tablet_pad *event);
+
+/**
+ * @ingroup event_tablet_pad
+ *
+ * Returns the number of the ring that has changed state, with 0 being the
+ * first ring. On tablets with only one ring, this function always returns
+ * 0.
+ *
+ * @note It is an application bug to call this function for events other than
+ * @ref LIBINPUT_EVENT_TABLET_PAD_RING.  For other events, this function
+ * returns 0.
+ *
+ * @param event The libinput tablet pad event
+ * @return The index of the ring that changed state
+ */
+unsigned int
+libinput_event_tablet_pad_get_ring_number(struct libinput_event_tablet_pad *event);
+
+/**
+ * @ingroup event_tablet_pad
+ *
+ * Returns the source of the interaction with the ring. If the source is
+ * @ref LIBINPUT_TABLET_PAD_RING_SOURCE_FINGER, libinput sends a ring
+ * position value of -1 to terminate the current interaction.
+ *
+ * @note It is an application bug to call this function for events other than
+ * @ref LIBINPUT_EVENT_TABLET_PAD_RING.  For other events, this function
+ * returns 0.
+ *
+ * @param event The libinput tablet pad event
+ * @return The source of the ring interaction
+ */
+enum libinput_tablet_pad_ring_axis_source
+libinput_event_tablet_pad_get_ring_source(struct libinput_event_tablet_pad *event);
+
+/**
+ * @ingroup event_tablet_pad
+ *
+ * Returns the current position of the strip, normalized to the range
+ * [0, 1], with 0 being the top/left-most point in the tablet's current
+ * logical orientation.
+ *
+ * If the source is @ref LIBINPUT_TABLET_PAD_STRIP_SOURCE_FINGER,
+ * libinput sends a terminating event with a ring value of -1 when the
+ * finger is lifted from the ring. A caller may use this information to e.g.
+ * determine if kinetic scrolling should be triggered.
+ *
+ * @note It is an application bug to call this function for events other than
+ * @ref LIBINPUT_EVENT_TABLET_PAD_STRIP.  For other events, this function
+ * returns 0.
+ *
+ * @param event The libinput tablet pad event
+ * @return The current value of the the axis
+ * @retval -1 The finger was lifted
+ */
+double
+libinput_event_tablet_pad_get_strip_position(struct libinput_event_tablet_pad *event);
+
+/**
+ * @ingroup event_tablet_pad
+ *
+ * Returns the number of the strip that has changed state, with 0 being the
+ * first strip. On tablets with only one strip, this function always returns
+ * 0.
+ *
+ * @note It is an application bug to call this function for events other than
+ * @ref LIBINPUT_EVENT_TABLET_PAD_STRIP.  For other events, this function
+ * returns 0.
+ *
+ * @param event The libinput tablet pad event
+ * @return The index of the strip that changed state
+ */
+unsigned int
+libinput_event_tablet_pad_get_strip_number(struct libinput_event_tablet_pad *event);
+
+/**
+ * @ingroup event_tablet_pad
+ *
+ * Returns the source of the interaction with the strip. If the source is
+ * @ref LIBINPUT_TABLET_PAD_STRIP_SOURCE_FINGER, libinput sends a strip
+ * position value of -1 to terminate the current interaction.
+ *
+ * @note It is an application bug to call this function for events other than
+ * @ref LIBINPUT_EVENT_TABLET_PAD_STRIP.  For other events, this function
+ * returns 0.
+ *
+ * @param event The libinput tablet pad event
+ * @return The source of the strip interaction
+ */
+enum libinput_tablet_pad_strip_axis_source
+libinput_event_tablet_pad_get_strip_source(struct libinput_event_tablet_pad *event);
+
+/**
+ * @ingroup event_tablet_pad
+ *
+ * Return the button number that triggered this event, starting at 0.
+ * For events that are not of type @ref LIBINPUT_EVENT_TABLET_PAD_BUTTON,
+ * this function returns 0.
+ *
+ * Note that the number returned is a generic sequential button number and
+ * not a semantic button code as defined in linux/input.h.
+ * See @ref tablet-pad-buttons for more details.
+ *
+ * @note It is an application bug to call this function for events other than
+ * @ref LIBINPUT_EVENT_TABLET_PAD_BUTTON. For other events, this function
+ * returns 0.
+ *
+ * @param event The libinput tablet pad event
+ * @return the button triggering this event
+ */
+uint32_t
+libinput_event_tablet_pad_get_button_number(struct libinput_event_tablet_pad *event);
+
+/**
+ * @ingroup event_tablet_pad
+ *
+ * Return the button state of the event.
+ *
+ * @note It is an application bug to call this function for events other than
+ * @ref LIBINPUT_EVENT_TABLET_PAD_BUTTON. For other events, this function
+ * returns 0.
+ *
+ * @param event The libinput tablet pad event
+ * @return the button state triggering this event
+ */
+enum libinput_button_state
+libinput_event_tablet_pad_get_button_state(struct libinput_event_tablet_pad *event);
+
+/**
+ * @ingroup event_tablet_pad
+ *
+ * Returns the mode the button, ring, or strip that triggered this event is
+ * in, at the time of the event.
+ *
+ * The mode is a virtual grouping of functionality, usually based on some
+ * visual feedback like LEDs on the pad. See @ref tablet-pad-modes for
+ * details. Mode indices start at 0, a device that does not support modes
+ * always returns 0.
+ *
+ * Mode switching is controlled by libinput and more than one mode may exist
+ * on the tablet. This function returns the mode that this event's button,
+ * ring or strip is logically in. If the button is a mode toggle button
+ * and the button event caused a new mode to be toggled, the mode returned
+ * is the new mode the button is in.
+ *
+ * Note that the returned mode is the mode valid as of the time of the
+ * event. The returned mode may thus be different to the mode returned by
+ * libinput_tablet_pad_mode_group_get_mode(). See
+ * libinput_tablet_pad_mode_group_get_mode() for details.
+ *
+ * @param event The libinput tablet pad event
+ * @return the 0-indexed mode of this button, ring or strip at the time of
+ * the event
+ *
+ * @see libinput_tablet_pad_mode_group_get_mode
+ */
+unsigned int
+libinput_event_tablet_pad_get_mode(struct libinput_event_tablet_pad *event);
+
+/**
+ * @ingroup event_tablet_pad
+ *
+ * Returns the mode group that the button, ring, or strip that triggered
+ * this event is considered in. The mode is a virtual grouping of
+ * functionality, usually based on some visual feedback like LEDs on the
+ * pad. See @ref tablet-pad-modes for details.
+ *
+ * The returned mode group is not refcounted and may become invalid after
+ * the next call to libinput. Use libinput_tablet_pad_mode_group_ref() and
+ * libinput_tablet_pad_mode_group_unref() to continue using the handle
+ * outside of the immediate scope.
+ *
+ * @param event The libinput tablet pad event
+ * @return the mode group of the button, ring or strip that caused this event
+ *
+ * @see libinput_device_tablet_pad_get_mode_group
+ */
+struct libinput_tablet_pad_mode_group *
+libinput_event_tablet_pad_get_mode_group(struct libinput_event_tablet_pad *event);
+
+/**
+ * @ingroup event_tablet
+ *
+ * @param event The libinput tablet pad event
+ * @return The event time for this event
+ */
+uint32_t
+libinput_event_tablet_pad_get_time(struct libinput_event_tablet_pad *event);
+
+/**
+ * @ingroup event_tablet_pad
+ *
+ * @param event The libinput tablet pad event
+ * @return The event time for this event in microseconds
+ */
+uint64_t
+libinput_event_tablet_pad_get_time_usec(struct libinput_event_tablet_pad *event);
+
+/**
+ * @defgroup base Initialization and manipulation of libinput contexts
+ */
+
+/**
+ * @ingroup base
+ * @struct libinput_interface
+ *
+ * libinput does not open file descriptors to devices directly, instead
+ * open_restricted() and close_restricted() are called for each path that
+ * must be opened.
+ *
+ * @see libinput_udev_create_context
+ * @see libinput_path_create_context
+ */
+struct libinput_interface {
+	/**
+	 * Open the device at the given path with the flags provided and
+	 * return the fd.
+	 *
+	 * @param path The device path to open
+	 * @param flags Flags as defined by open(2)
+	 * @param user_data The user_data provided in
+	 * libinput_udev_create_context()
+	 *
+	 * @return The file descriptor, or a negative errno on failure.
+	 */
+	int (*open_restricted)(const char *path, int flags, void *user_data);
+	/**
+	 * Close the file descriptor.
+	 *
+	 * @param fd The file descriptor to close
+	 * @param user_data The user_data provided in
+	 * libinput_udev_create_context()
+	 */
+	void (*close_restricted)(int fd, void *user_data);
+};
+
+/**
+ * @ingroup base
+ *
+ * Create a new libinput context from udev. This context is inactive until
+ * assigned a seat ID with libinput_udev_assign_seat().
+ *
+ * @param interface The callback interface
+ * @param user_data Caller-specific data passed to the various callback
+ * interfaces.
+ * @param udev An already initialized udev context
+ *
+ * @return An initialized, but inactive libinput context or NULL on error
+ */
+struct libinput *
+libinput_udev_create_context(const struct libinput_interface *interface,
+			     void *user_data,
+			     struct udev *udev);
+
+/**
+ * @ingroup base
+ *
+ * Assign a seat to this libinput context. New devices or the removal of
+ * existing devices will appear as events during libinput_dispatch().
+ *
+ * libinput_udev_assign_seat() succeeds even if no input devices are currently
+ * available on this seat, or if devices are available but fail to open in
+ * @ref libinput_interface::open_restricted. Devices that do not have the
+ * minimum capabilities to be recognized as pointer, keyboard or touch
+ * device are ignored. Such devices and those that failed to open
+ * ignored until the next call to libinput_resume().
+ *
+ * This function may only be called once per context.
+ *
+ * @param libinput A libinput context initialized with
+ * libinput_udev_create_context()
+ * @param seat_id A seat identifier. This string must not be NULL.
+ *
+ * @return 0 on success or -1 on failure.
+ */
+int
+libinput_udev_assign_seat(struct libinput *libinput,
+			  const char *seat_id);
+
+/**
+ * @ingroup base
+ *
+ * Create a new libinput context that requires the caller to manually add or
+ * remove devices with libinput_path_add_device() and
+ * libinput_path_remove_device().
+ *
+ * The context is fully initialized but will not generate events until at
+ * least one device has been added.
+ *
+ * The reference count of the context is initialized to 1. See @ref
+ * libinput_unref.
+ *
+ * @param interface The callback interface
+ * @param user_data Caller-specific data passed to the various callback
+ * interfaces.
+ *
+ * @return An initialized, empty libinput context.
+ */
+struct libinput *
+libinput_path_create_context(const struct libinput_interface *interface,
+			     void *user_data);
+
+/**
+ * @ingroup base
+ *
+ * Add a device to a libinput context initialized with
+ * libinput_path_create_context(). If successful, the device will be
+ * added to the internal list and re-opened on libinput_resume(). The device
+ * can be removed with libinput_path_remove_device().
+ *
+ * If the device was successfully initialized, it is returned in the device
+ * argument. The lifetime of the returned device pointer is limited until
+ * the next libinput_dispatch(), use libinput_device_ref() to keep a permanent
+ * reference.
+ *
+ * @param libinput A previously initialized libinput context
+ * @param path Path to an input device
+ * @return The newly initiated device on success, or NULL on failure.
+ *
+ * @note It is an application bug to call this function on a libinput
+ * context initialized with libinput_udev_create_context().
+ */
+struct libinput_device *
+libinput_path_add_device(struct libinput *libinput,
+			 const char *path);
+
+/**
+ * @ingroup base
+ *
+ * Remove a device from a libinput context initialized with
+ * libinput_path_create_context() or added to such a context with
+ * libinput_path_add_device().
+ *
+ * Events already processed from this input device are kept in the queue,
+ * the @ref LIBINPUT_EVENT_DEVICE_REMOVED event marks the end of events for
+ * this device.
+ *
+ * If no matching device exists, this function does nothing.
+ *
+ * @param device A libinput device
+ *
+ * @note It is an application bug to call this function on a libinput
+ * context initialized with libinput_udev_create_context().
+ */
+void
+libinput_path_remove_device(struct libinput_device *device);
+
+/**
+ * @ingroup base
+ *
+ * libinput keeps a single file descriptor for all events. Call into
+ * libinput_dispatch() if any events become available on this fd.
+ *
+ * @return The file descriptor used to notify of pending events.
+ */
+int
+libinput_get_fd(struct libinput *libinput);
+
+/**
+ * @ingroup base
+ *
+ * Main event dispatchment function. Reads events of the file descriptors
+ * and processes them internally. Use libinput_get_event() to retrieve the
+ * events.
+ *
+ * Dispatching does not necessarily queue libinput events. This function
+ * should be called immediately once data is available on the file
+ * descriptor returned by libinput_get_fd(). libinput has a number of
+ * timing-sensitive features (e.g. tap-to-click), any delay in calling
+ * libinput_dispatch() may prevent these features from working correctly.
+ *
+ * @param libinput A previously initialized libinput context
+ *
+ * @return 0 on success, or a negative errno on failure
+ */
+int
+libinput_dispatch(struct libinput *libinput);
+
+/**
+ * @ingroup base
+ *
+ * Retrieve the next event from libinput's internal event queue.
+ *
+ * After handling the retrieved event, the caller must destroy it using
+ * libinput_event_destroy().
+ *
+ * @param libinput A previously initialized libinput context
+ * @return The next available event, or NULL if no event is available.
+ */
+struct libinput_event *
+libinput_get_event(struct libinput *libinput);
+
+/**
+ * @ingroup base
+ *
+ * Return the type of the next event in the internal queue. This function
+ * does not pop the event off the queue and the next call to
+ * libinput_get_event() returns that event.
+ *
+ * @param libinput A previously initialized libinput context
+ * @return The event type of the next available event or @ref
+ * LIBINPUT_EVENT_NONE if no event is available.
+ */
+enum libinput_event_type
+libinput_next_event_type(struct libinput *libinput);
+
+/**
+ * @ingroup base
+ *
+ * Set caller-specific data associated with this context. libinput does
+ * not manage, look at, or modify this data. The caller must ensure the
+ * data is valid.
+ *
+ * @param libinput A previously initialized libinput context
+ * @param user_data Caller-specific data passed to the various callback
+ * interfaces.
+ */
+void
+libinput_set_user_data(struct libinput *libinput,
+		       void *user_data);
+
+/**
+ * @ingroup base
+ *
+ * Get the caller-specific data associated with this context, if any.
+ *
+ * @param libinput A previously initialized libinput context
+ * @return The caller-specific data previously assigned in
+ * libinput_create_udev().
+ */
+void *
+libinput_get_user_data(struct libinput *libinput);
+
+/**
+ * @ingroup base
+ *
+ * Resume a suspended libinput context. This re-enables device
+ * monitoring and adds existing devices.
+ *
+ * @param libinput A previously initialized libinput context
+ * @see libinput_suspend
+ *
+ * @return 0 on success or -1 on failure
+ */
+int
+libinput_resume(struct libinput *libinput);
+
+/**
+ * @ingroup base
+ *
+ * Suspend monitoring for new devices and close existing devices.
+ * This all but terminates libinput but does keep the context
+ * valid to be resumed with libinput_resume().
+ *
+ * @param libinput A previously initialized libinput context
+ */
+void
+libinput_suspend(struct libinput *libinput);
+
+/**
+ * @ingroup base
+ *
+ * Add a reference to the context. A context is destroyed whenever the
+ * reference count reaches 0. See @ref libinput_unref.
+ *
+ * @param libinput A previously initialized valid libinput context
+ * @return The passed libinput context
+ */
+struct libinput *
+libinput_ref(struct libinput *libinput);
+
+/**
+ * @ingroup base
+ *
+ * Dereference the libinput context. After this, the context may have been
+ * destroyed, if the last reference was dereferenced. If so, the context is
+ * invalid and may not be interacted with.
+ *
+ * @bug When the refcount reaches zero, libinput_unref() releases resources
+ * even if a caller still holds refcounted references to related resources
+ * (e.g. a libinput_device). When libinput_unref() returns
+ * NULL, the caller must consider any resources related to that context
+ * invalid. See https://bugs.freedesktop.org/show_bug.cgi?id=91872.
+ * Example code:
+ * @code
+ * li = libinput_path_create_context(&interface, NULL);
+ * device = libinput_path_add_device(li, "/dev/input/event0");
+ * // get extra reference to device
+ * libinput_device_ref(device);
+ *
+ * // refcount reaches 0, so *all* resources are cleaned up,
+ * // including device
+ * libinput_unref(li);
+ *
+ * // INCORRECT: device has been cleaned up and must not be used
+ * // li = libinput_device_get_context(device);
+ * @endcode
+ *
+ * @param libinput A previously initialized libinput context
+ * @return NULL if context was destroyed otherwise the passed context
+ */
+struct libinput *
+libinput_unref(struct libinput *libinput);
+
+/**
+ * @ingroup base
+ *
+ * Set the log priority for the libinput context. Messages with priorities
+ * equal to or higher than the argument will be printed to the context's
+ * log handler.
+ *
+ * The default log priority is @ref LIBINPUT_LOG_PRIORITY_ERROR.
+ *
+ * @param libinput A previously initialized libinput context
+ * @param priority The minimum priority of log messages to print.
+ *
+ * @see libinput_log_set_handler
+ * @see libinput_log_get_priority
+ */
+void
+libinput_log_set_priority(struct libinput *libinput,
+			  enum libinput_log_priority priority);
+
+/**
+ * @ingroup base
+ *
+ * Get the context's log priority. Messages with priorities equal to or
+ * higher than the argument will be printed to the current log handler.
+ *
+ * The default log priority is @ref LIBINPUT_LOG_PRIORITY_ERROR.
+ *
+ * @param libinput A previously initialized libinput context
+ * @return The minimum priority of log messages to print.
+ *
+ * @see libinput_log_set_handler
+ * @see libinput_log_set_priority
+ */
+enum libinput_log_priority
+libinput_log_get_priority(const struct libinput *libinput);
+
+/**
+ * @ingroup base
+ *
+ * Log handler type for custom logging.
+ *
+ * @param libinput The libinput context
+ * @param priority The priority of the current message
+ * @param format Message format in printf-style
+ * @param args Message arguments
+ *
+ * @see libinput_log_set_priority
+ * @see libinput_log_get_priority
+ * @see libinput_log_set_handler
+ */
+typedef void (*libinput_log_handler)(struct libinput *libinput,
+				     enum libinput_log_priority priority,
+				     const char *format, va_list args)
+	   LIBINPUT_ATTRIBUTE_PRINTF(3, 0);
+
+/**
+ * @ingroup base
+ *
+ * Set the context's log handler. Messages with priorities equal to or
+ * higher than the context's log priority will be passed to the given
+ * log handler.
+ *
+ * The default log handler prints to stderr.
+ *
+ * @param libinput A previously initialized libinput context
+ * @param log_handler The log handler for library messages.
+ *
+ * @see libinput_log_set_priority
+ * @see libinput_log_get_priority
+ */
+void
+libinput_log_set_handler(struct libinput *libinput,
+			 libinput_log_handler log_handler);
+
+/**
+ * @defgroup seat Initialization and manipulation of seats
+ *
+ * A seat has two identifiers, the physical name and the logical name. A
+ * device is always assigned to exactly one seat. It may change to a
+ * different logical seat but it cannot change physical seats. See @ref
+ * seats for details.
+ */
+
+/**
+ * @ingroup seat
+ *
+ * Increase the refcount of the seat. A seat will be freed whenever the
+ * refcount reaches 0. This may happen during libinput_dispatch() if the
+ * seat was removed from the system. A caller must ensure to reference
+ * the seat correctly to avoid dangling pointers.
+ *
+ * @param seat A previously obtained seat
+ * @return The passed seat
+ */
+struct libinput_seat *
+libinput_seat_ref(struct libinput_seat *seat);
+
+/**
+ * @ingroup seat
+ *
+ * Decrease the refcount of the seat. A seat will be freed whenever the
+ * refcount reaches 0. This may happen during libinput_dispatch() if the
+ * seat was removed from the system. A caller must ensure to reference
+ * the seat correctly to avoid dangling pointers.
+ *
+ * @param seat A previously obtained seat
+ * @return NULL if seat was destroyed, otherwise the passed seat
+ */
+struct libinput_seat *
+libinput_seat_unref(struct libinput_seat *seat);
+
+/**
+ * @ingroup seat
+ *
+ * Set caller-specific data associated with this seat. libinput does
+ * not manage, look at, or modify this data. The caller must ensure the
+ * data is valid.
+ *
+ * @param seat A previously obtained seat
+ * @param user_data Caller-specific data pointer
+ * @see libinput_seat_get_user_data
+ */
+void
+libinput_seat_set_user_data(struct libinput_seat *seat, void *user_data);
+
+/**
+ * @ingroup seat
+ *
+ * Get the caller-specific data associated with this seat, if any.
+ *
+ * @param seat A previously obtained seat
+ * @return Caller-specific data pointer or NULL if none was set
+ * @see libinput_seat_set_user_data
+ */
+void *
+libinput_seat_get_user_data(struct libinput_seat *seat);
+
+/**
+ * @ingroup seat
+ *
+ * Get the libinput context from the seat.
+ *
+ * @param seat A previously obtained seat
+ * @return The libinput context for this seat.
+ */
+struct libinput *
+libinput_seat_get_context(struct libinput_seat *seat);
+
+/**
+ * @ingroup seat
+ *
+ * Return the physical name of the seat. For libinput contexts created from
+ * udev, this is always the same value as passed into
+ * libinput_udev_assign_seat() and all seats from that context will have
+ * the same physical name.
+ *
+ * The physical name of the seat is one that is usually set by the system or
+ * lower levels of the stack. In most cases, this is the base filter for
+ * devices - devices assigned to seats outside the current seat will not
+ * be available to the caller.
+ *
+ * @param seat A previously obtained seat
+ * @return The physical name of this seat
+ */
+const char *
+libinput_seat_get_physical_name(struct libinput_seat *seat);
+
+/**
+ * @ingroup seat
+ *
+ * Return the logical name of the seat. This is an identifier to group sets
+ * of devices within the compositor.
+ *
+ * @param seat A previously obtained seat
+ * @return The logical name of this seat
+ */
+const char *
+libinput_seat_get_logical_name(struct libinput_seat *seat);
+
+/**
+ * @defgroup device Initialization and manipulation of input devices
+ */
+
+/**
+ * @ingroup device
+ *
+ * Increase the refcount of the input device. An input device will be freed
+ * whenever the refcount reaches 0. This may happen during
+ * libinput_dispatch() if the device was removed from the system. A caller
+ * must ensure to reference the device correctly to avoid dangling pointers.
+ *
+ * @param device A previously obtained device
+ * @return The passed device
+ */
+struct libinput_device *
+libinput_device_ref(struct libinput_device *device);
+
+/**
+ * @ingroup device
+ *
+ * Decrease the refcount of the input device. An input device will be freed
+ * whenever the refcount reaches 0. This may happen during libinput_dispatch
+ * if the device was removed from the system. A caller must ensure to
+ * reference the device correctly to avoid dangling pointers.
+ *
+ * @param device A previously obtained device
+ * @return NULL if the device was destroyed, otherwise the passed device
+ */
+struct libinput_device *
+libinput_device_unref(struct libinput_device *device);
+
+/**
+ * @ingroup device
+ *
+ * Set caller-specific data associated with this input device. libinput does
+ * not manage, look at, or modify this data. The caller must ensure the
+ * data is valid.
+ *
+ * @param device A previously obtained device
+ * @param user_data Caller-specific data pointer
+ * @see libinput_device_get_user_data
+ */
+void
+libinput_device_set_user_data(struct libinput_device *device, void *user_data);
+
+/**
+ * @ingroup device
+ *
+ * Get the caller-specific data associated with this input device, if any.
+ *
+ * @param device A previously obtained device
+ * @return Caller-specific data pointer or NULL if none was set
+ * @see libinput_device_set_user_data
+ */
+void *
+libinput_device_get_user_data(struct libinput_device *device);
+
+/**
+ * @ingroup device
+ *
+ * Get the libinput context from the device.
+ *
+ * @param device A previously obtained device
+ * @return The libinput context for this device.
+ */
+struct libinput *
+libinput_device_get_context(struct libinput_device *device);
+
+/**
+ * @ingroup device
+ *
+ * Get the device group this device is assigned to. Some physical
+ * devices like graphics tablets are represented by multiple kernel
+ * devices and thus by multiple struct @ref libinput_device.
+ *
+ * libinput assigns these devices to the same @ref libinput_device_group
+ * allowing the caller to identify such devices and adjust configuration
+ * settings accordingly. For example, setting a tablet to left-handed often
+ * means turning it upside down. A touch device on the same tablet would
+ * need to be turned upside down too to work correctly.
+ *
+ * All devices are part of a device group though for most devices the group
+ * will be a singleton. A device is assigned to a device group on @ref
+ * LIBINPUT_EVENT_DEVICE_ADDED and removed from that group on @ref
+ * LIBINPUT_EVENT_DEVICE_REMOVED. It is up to the caller to track how many
+ * devices are in each device group.
+ *
+ * @dot
+ * digraph groups_libinput {
+ *   rankdir="TB";
+ *   node [
+ *     shape="box";
+ *   ]
+ *
+ *   mouse [ label="mouse"; URL="\ref libinput_device"];
+ *   kbd [ label="keyboard"; URL="\ref libinput_device"];
+ *
+ *   pen [ label="tablet pen"; URL="\ref libinput_device"];
+ *   touch [ label="tablet touch"; URL="\ref libinput_device"];
+ *   pad [ label="tablet pad"; URL="\ref libinput_device"];
+ *
+ *   group1 [ label="group 1"; URL="\ref libinput_device_group"];
+ *   group2 [ label="group 2"; URL="\ref libinput_device_group"];
+ *   group3 [ label="group 3"; URL="\ref libinput_device_group"];
+ *
+ *   mouse -> group1
+ *   kbd -> group2
+ *
+ *   pen -> group3;
+ *   touch -> group3;
+ *   pad -> group3;
+ * }
+ * @enddot
+ *
+ * Device groups do not get re-used once the last device in the group was
+ * removed, i.e. unplugging and re-plugging a physical device with grouped
+ * devices will return a different device group after every unplug.
+ *
+ * The returned device group is not refcounted and may become invalid after
+ * the next call to libinput. Use libinput_device_group_ref() and
+ * libinput_device_group_unref() to continue using the handle outside of the
+ * immediate scope.
+ *
+ * Device groups are assigned based on the <b>LIBINPUT_DEVICE_GROUP</b> udev
+ * property, see @ref udev_config.
+ *
+ * @return The device group this device belongs to
+ */
+struct libinput_device_group *
+libinput_device_get_device_group(struct libinput_device *device);
+
+/**
+ * @ingroup device
+ *
+ * Get the system name of the device.
+ *
+ * To get the descriptive device name, use libinput_device_get_name().
+ *
+ * @param device A previously obtained device
+ * @return System name of the device
+ *
+ */
+const char *
+libinput_device_get_sysname(struct libinput_device *device);
+
+/**
+ * @ingroup device
+ *
+ * The descriptive device name as advertised by the kernel and/or the
+ * hardware itself. To get the sysname for this device, use
+ * libinput_device_get_sysname().
+ *
+ * The lifetime of the returned string is tied to the struct
+ * libinput_device. The string may be the empty string but is never NULL.
+ *
+ * @param device A previously obtained device
+ * @return The device name
+ */
+const char *
+libinput_device_get_name(struct libinput_device *device);
+
+/**
+ * @ingroup device
+ *
+ * Get the product ID for this device.
+ *
+ * @param device A previously obtained device
+ * @return The product ID of this device
+ */
+unsigned int
+libinput_device_get_id_product(struct libinput_device *device);
+
+/**
+ * @ingroup device
+ *
+ * Get the vendor ID for this device.
+ *
+ * @param device A previously obtained device
+ * @return The vendor ID of this device
+ */
+unsigned int
+libinput_device_get_id_vendor(struct libinput_device *device);
+
+/**
+ * @ingroup device
+ *
+ * A device may be mapped to a single output, or all available outputs. If a
+ * device is mapped to a single output only, a relative device may not move
+ * beyond the boundaries of this output. An absolute device has its input
+ * coordinates mapped to the extents of this output.
+ *
+ * @return The name of the output this device is mapped to, or NULL if no
+ * output is set
+ */
+const char *
+libinput_device_get_output_name(struct libinput_device *device);
+
+/**
+ * @ingroup device
+ *
+ * Get the seat associated with this input device, see @ref seats for
+ * details.
+ *
+ * A seat can be uniquely identified by the physical and logical seat name.
+ * There will ever be only one seat instance with a given physical and logical
+ * seat name pair at any given time, but if no external reference is kept, it
+ * may be destroyed if no device belonging to it is left.
+ *
+ * The returned seat is not refcounted and may become invalid after
+ * the next call to libinput. Use libinput_seat_ref() and
+ * libinput_seat_unref() to continue using the handle outside of the
+ * immediate scope.
+ *
+ * @param device A previously obtained device
+ * @return The seat this input device belongs to
+ */
+struct libinput_seat *
+libinput_device_get_seat(struct libinput_device *device);
+
+/**
+ * @ingroup device
+ *
+ * Change the logical seat associated with this device by removing the
+ * device and adding it to the new seat.
+ *
+ * This command is identical to physically unplugging the device, then
+ * re-plugging it as a member of the new seat. libinput will generate a
+ * @ref LIBINPUT_EVENT_DEVICE_REMOVED event and this @ref libinput_device is
+ * considered removed from the context; it will not generate further events
+ * and will be freed when the refcount reaches zero.
+ * A @ref LIBINPUT_EVENT_DEVICE_ADDED event is generated with a new @ref
+ * libinput_device handle. It is the caller's responsibility to update
+ * references to the new device accordingly.
+ *
+ * If the logical seat name already exists in the device's physical seat,
+ * the device is added to this seat. Otherwise, a new seat is created.
+ *
+ * @note This change applies to this device until removal or @ref
+ * libinput_suspend(), whichever happens earlier.
+ *
+ * @param device A previously obtained device
+ * @param name The new logical seat name
+ * @return 0 on success, non-zero on error
+ */
+int
+libinput_device_set_seat_logical_name(struct libinput_device *device,
+				      const char *name);
+
+/**
+ * @ingroup device
+ *
+ * Return a udev handle to the device that is this libinput device, if any.
+ * The returned handle has a refcount of at least 1, the caller must call
+ * <i>udev_device_unref()</i> once to release the associated resources.
+ * See the [libudev documentation]
+ * (http://www.freedesktop.org/software/systemd/libudev/) for details.
+ *
+ * Some devices may not have a udev device, or the udev device may be
+ * unobtainable. This function returns NULL if no udev device was available.
+ *
+ * Calling this function multiple times for the same device may not
+ * return the same udev handle each time.
+ *
+ * @param device A previously obtained device
+ * @return A udev handle to the device with a refcount of >= 1 or NULL.
+ * @retval NULL This device is not represented by a udev device
+ */
+struct udev_device *
+libinput_device_get_udev_device(struct libinput_device *device);
+
+/**
+ * @ingroup device
+ *
+ * Update the LEDs on the device, if any. If the device does not have
+ * LEDs, or does not have one or more of the LEDs given in the mask, this
+ * function does nothing.
+ *
+ * @param device A previously obtained device
+ * @param leds A mask of the LEDs to set, or unset.
+ */
+void
+libinput_device_led_update(struct libinput_device *device,
+			   enum libinput_led leds);
+
+/**
+ * @ingroup device
+ *
+ * Check if the given device has the specified capability
+ *
+ * @return Non-zero if the given device has the capability or zero otherwise
+ */
+int
+libinput_device_has_capability(struct libinput_device *device,
+			       enum libinput_device_capability capability);
+
+/**
+ * @ingroup device
+ *
+ * Get the physical size of a device in mm, where meaningful. This function
+ * only succeeds on devices with the required data, i.e. tablets, touchpads
+ * and touchscreens.
+ *
+ * If this function returns nonzero, width and height are unmodified.
+ *
+ * @param device The device
+ * @param width Set to the width of the device
+ * @param height Set to the height of the device
+ * @return 0 on success, or nonzero otherwise
+ */
+int
+libinput_device_get_size(struct libinput_device *device,
+			 double *width,
+			 double *height);
+
+/**
+ * @ingroup device
+ *
+ * Check if a @ref LIBINPUT_DEVICE_CAP_POINTER device has a button with the
+ * given code (see linux/input.h).
+ *
+ * @param device A current input device
+ * @param code Button code to check for, e.g. <i>BTN_LEFT</i>
+ *
+ * @return 1 if the device supports this button code, 0 if it does not, -1
+ * on error.
+ */
+int
+libinput_device_pointer_has_button(struct libinput_device *device, uint32_t code);
+
+/**
+ * @ingroup device
+ *
+ * Check if a @ref LIBINPUT_DEVICE_CAP_KEYBOARD device has a key with the
+ * given code (see linux/input.h).
+ *
+ * @param device A current input device
+ * @param code Key code to check for, e.g. <i>KEY_ESC</i>
+ *
+ * @return 1 if the device supports this key code, 0 if it does not, -1
+ * on error.
+ */
+int
+libinput_device_keyboard_has_key(struct libinput_device *device,
+				 uint32_t code);
+
+/**
+ * @ingroup device
+ *
+ * Return the number of buttons on a device with the
+ * @ref LIBINPUT_DEVICE_CAP_TABLET_PAD capability.
+ * Buttons on a pad device are numbered sequentially, see @ref
+ * tablet-pad-buttons for details.
+ *
+ * @param device A current input device
+ *
+ * @return The number of buttons supported by the device.
+ */
+int
+libinput_device_tablet_pad_get_num_buttons(struct libinput_device *device);
+
+/**
+ * @ingroup device
+ *
+ * Return the number of rings a device with the @ref
+ * LIBINPUT_DEVICE_CAP_TABLET_PAD capability provides.
+ *
+ * @param device A current input device
+ *
+ * @return The number of rings or 0 if the device has no rings.
+ *
+ * @see libinput_event_tablet_pad_get_ring_number
+ */
+int
+libinput_device_tablet_pad_get_num_rings(struct libinput_device *device);
+
+/**
+ * @ingroup device
+ *
+ * Return the number of strips a device with the @ref
+ * LIBINPUT_DEVICE_CAP_TABLET_PAD capability provides.
+ *
+ * @param device A current input device
+ *
+ * @return The number of strips or 0 if the device has no strips.
+ *
+ * @see libinput_event_tablet_pad_get_strip_number
+ */
+int
+libinput_device_tablet_pad_get_num_strips(struct libinput_device *device);
+
+/**
+ * @ingroup device
+ *
+ * Increase the refcount of the device group. A device group will be freed
+ * whenever the refcount reaches 0. This may happen during
+ * libinput_dispatch() if all devices of this group were removed from the
+ * system. A caller must ensure to reference the device group correctly to
+ * avoid dangling pointers.
+ *
+ * @param group A previously obtained device group
+ * @return The passed device group
+ */
+struct libinput_device_group *
+libinput_device_group_ref(struct libinput_device_group *group);
+
+/**
+ * @ingroup device
+ *
+ * Decrease the refcount of the device group. A device group will be freed
+ * whenever the refcount reaches 0. This may happen during
+ * libinput_dispatch() if all devices of this group were removed from the
+ * system. A caller must ensure to reference the device group correctly to
+ * avoid dangling pointers.
+ *
+ * @param group A previously obtained device group
+ * @return NULL if the device group was destroyed, otherwise the passed
+ * device group
+ */
+struct libinput_device_group *
+libinput_device_group_unref(struct libinput_device_group *group);
+
+/**
+ * @ingroup device
+ *
+ * Set caller-specific data associated with this device group. libinput does
+ * not manage, look at, or modify this data. The caller must ensure the
+ * data is valid.
+ *
+ * @param group A previously obtained device group
+ * @param user_data Caller-specific data pointer
+ * @see libinput_device_group_get_user_data
+ */
+void
+libinput_device_group_set_user_data(struct libinput_device_group *group,
+				    void *user_data);
+
+/**
+ * @ingroup device
+ *
+ * Get the caller-specific data associated with this input device group, if
+ * any.
+ *
+ * @param group A previously obtained group
+ * @return Caller-specific data pointer or NULL if none was set
+ * @see libinput_device_group_set_user_data
+ */
+void *
+libinput_device_group_get_user_data(struct libinput_device_group *group);
+
+/**
+ * @defgroup config Device configuration
+ *
+ * Enable, disable, change and/or check for device-specific features. For
+ * all features, libinput assigns a default based on the hardware
+ * configuration. This default can be obtained with the respective
+ * get_default call.
+ *
+ * Configuration options are device dependent and not all options are
+ * supported on all devices. For all configuration options, libinput
+ * provides a call to check if a configuration option is available on a
+ * device (e.g. libinput_device_config_calibration_has_matrix())
+ *
+ * Some configuration option may be dependent on or mutually exclusive with
+ * with other options. The behavior in those cases is
+ * implementation-dependent, the caller must ensure that the options are set
+ * in the right order.
+ *
+ * Below is a general grouping of configuration options according to device
+ * type. Note that this is a guide only and not indicative of any specific
+ * device.
+ * - Touchpad:
+ *    - libinput_device_config_tap_set_enabled()
+ *    - libinput_device_config_tap_set_drag_enabled()
+ *    - libinput_device_config_tap_set_drag_lock_enabled()
+ *    - libinput_device_config_click_set_method()
+ *    - libinput_device_config_scroll_set_method()
+ *    - libinput_device_config_dwt_set_enabled()
+ * - Touchscreens:
+ *    - libinput_device_config_calibration_set_matrix()
+ * - Pointer devices (mice, trackballs, touchpads):
+ *    - libinput_device_config_accel_set_speed()
+ *    - libinput_device_config_accel_set_profile()
+ *    - libinput_device_config_scroll_set_natural_scroll_enabled()
+ *    - libinput_device_config_left_handed_set()
+ *    - libinput_device_config_middle_emulation_set_enabled()
+ *    - libinput_device_config_rotation_set_angle()
+ * - All devices:
+ *    - libinput_device_config_send_events_set_mode()
+ */
+
+/**
+ * @ingroup config
+ *
+ * Status codes returned when applying configuration settings.
+ */
+enum libinput_config_status {
+	LIBINPUT_CONFIG_STATUS_SUCCESS = 0,	/**< Config applied successfully */
+	LIBINPUT_CONFIG_STATUS_UNSUPPORTED,	/**< Configuration not available on
+						     this device */
+	LIBINPUT_CONFIG_STATUS_INVALID,		/**< Invalid parameter range */
+};
+
+/**
+ * @ingroup config
+ *
+ * Return a string describing the error.
+ *
+ * @param status The status to translate to a string
+ * @return A human-readable string representing the error or NULL for an
+ * invalid status.
+ */
+const char *
+libinput_config_status_to_str(enum libinput_config_status status);
+
+/**
+ * @ingroup config
+ */
+enum libinput_config_tap_state {
+	LIBINPUT_CONFIG_TAP_DISABLED, /**< Tapping is to be disabled, or is
+					currently disabled */
+	LIBINPUT_CONFIG_TAP_ENABLED, /**< Tapping is to be enabled, or is
+				       currently enabled */
+};
+
+/**
+ * @ingroup config
+ *
+ * Check if the device supports tap-to-click and how many fingers can be
+ * used for tapping. See
+ * libinput_device_config_tap_set_enabled() for more information.
+ *
+ * @param device The device to configure
+ * @return The number of fingers that can generate a tap event, or 0 if the
+ * device does not support tapping.
+ *
+ * @see libinput_device_config_tap_set_enabled
+ * @see libinput_device_config_tap_get_enabled
+ * @see libinput_device_config_tap_get_default_enabled
+ */
+int
+libinput_device_config_tap_get_finger_count(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * Enable or disable tap-to-click on this device, with a default mapping of
+ * 1, 2, 3 finger tap mapping to left, right, middle click, respectively.
+ * Tapping is limited by the number of simultaneous touches
+ * supported by the device, see
+ * libinput_device_config_tap_get_finger_count().
+ *
+ * @param device The device to configure
+ * @param enable @ref LIBINPUT_CONFIG_TAP_ENABLED to enable tapping or @ref
+ * LIBINPUT_CONFIG_TAP_DISABLED to disable tapping
+ *
+ * @return A config status code. Disabling tapping on a device that does not
+ * support tapping always succeeds.
+ *
+ * @see libinput_device_config_tap_get_finger_count
+ * @see libinput_device_config_tap_get_enabled
+ * @see libinput_device_config_tap_get_default_enabled
+ */
+enum libinput_config_status
+libinput_device_config_tap_set_enabled(struct libinput_device *device,
+				       enum libinput_config_tap_state enable);
+
+/**
+ * @ingroup config
+ *
+ * Check if tap-to-click is enabled on this device. If the device does not
+ * support tapping, this function always returns @ref
+ * LIBINPUT_CONFIG_TAP_DISABLED.
+ *
+ * @param device The device to configure
+ *
+ * @retval LIBINPUT_CONFIG_TAP_ENABLED If tapping is currently enabled
+ * @retval LIBINPUT_CONFIG_TAP_DISABLED If tapping is currently disabled
+ *
+ * @see libinput_device_config_tap_get_finger_count
+ * @see libinput_device_config_tap_set_enabled
+ * @see libinput_device_config_tap_get_default_enabled
+ */
+enum libinput_config_tap_state
+libinput_device_config_tap_get_enabled(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * Return the default setting for whether tap-to-click is enabled on this
+ * device.
+ *
+ * @param device The device to configure
+ * @retval LIBINPUT_CONFIG_TAP_ENABLED If tapping is enabled by default
+ * @retval LIBINPUT_CONFIG_TAP_DISABLED If tapping Is disabled by default
+ *
+ * @see libinput_device_config_tap_get_finger_count
+ * @see libinput_device_config_tap_set_enabled
+ * @see libinput_device_config_tap_get_enabled
+ */
+enum libinput_config_tap_state
+libinput_device_config_tap_get_default_enabled(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ */
+enum libinput_config_tap_button_map {
+	/** 1/2/3 finger tap maps to left/right/middle */
+	LIBINPUT_CONFIG_TAP_MAP_LRM,
+	/** 1/2/3 finger tap maps to left/middle/right*/
+	LIBINPUT_CONFIG_TAP_MAP_LMR,
+};
+
+/**
+ * @ingroup config
+ *
+ * Set the finger number to button number mapping for tap-to-click. The
+ * default mapping on most devices is to have a 1, 2 and 3 finger tap to map
+ * to the left, right and middle button, respectively.
+ * A device may permit changing the button mapping but disallow specific
+ * maps. In this case @ref LIBINPUT_CONFIG_STATUS_UNSUPPORTED is returned,
+ * the caller is expected to handle this case correctly.
+ *
+ * Changing the button mapping may not take effect immediately,
+ * the device may wait until it is in a neutral state before applying any
+ * changes.
+ *
+ * The mapping may be changed when tap-to-click is disabled. The new mapping
+ * takes effect when tap-to-click is enabled in the future.
+ *
+ * @note It is an application bug to call this function for devices where
+ * libinput_device_config_tap_get_finger_count() returns 0.
+ *
+ * @param device The device to configure
+ * @param map The new finger-to-button number mapping
+ * @return A config status code. Changing the order on a device that does not
+ * support tapping always fails with @ref LIBINPUT_CONFIG_STATUS_UNSUPPORTED.
+ *
+ * @see libinput_device_config_tap_get_button_map
+ * @see libinput_device_config_tap_get_default_button_map
+ */
+enum libinput_config_status
+libinput_device_config_tap_set_button_map(struct libinput_device *device,
+					    enum libinput_config_tap_button_map map);
+
+/**
+ * @ingroup config
+ *
+ * Get the finger number to button number mapping for tap-to-click.
+ *
+ * The return value for a device that does not support tapping is always
+ * @ref LIBINPUT_CONFIG_TAP_MAP_LRM.
+ *
+ * @note It is an application bug to call this function for devices where
+ * libinput_device_config_tap_get_finger_count() returns 0.
+ *
+ * @param device The device to configure
+ * @return The current finger-to-button number mapping
+ *
+ * @see libinput_device_config_tap_set_button_map
+ * @see libinput_device_config_tap_get_default_button_map
+ */
+enum libinput_config_tap_button_map
+libinput_device_config_tap_get_button_map(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * Get the default finger number to button number mapping for tap-to-click.
+ *
+ * The return value for a device that does not support tapping is always
+ * @ref LIBINPUT_CONFIG_TAP_MAP_LRM.
+ *
+ * @note It is an application bug to call this function for devices where
+ * libinput_device_config_tap_get_finger_count() returns 0.
+ *
+ * @param device The device to configure
+ * @return The current finger-to-button number mapping
+ *
+ * @see libinput_device_config_tap_set_button_map
+ * @see libinput_device_config_tap_get_default_button_map
+ */
+enum libinput_config_tap_button_map
+libinput_device_config_tap_get_default_button_map(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * A config status to distinguish or set dragging on a device. Currently
+ * implemented for tap-and-drag only, see
+ * libinput_device_config_tap_set_drag_enabled()
+ */
+enum libinput_config_drag_state {
+	/**
+	 * Drag is to be disabled, or is
+	 * currently disabled.
+	 */
+	LIBINPUT_CONFIG_DRAG_DISABLED,
+	/**
+	 * Drag is to be enabled, or is
+	 * currently enabled
+	 */
+	LIBINPUT_CONFIG_DRAG_ENABLED,
+};
+
+/**
+ * @ingroup config
+ *
+ * Enable or disable tap-and-drag on this device. When enabled, a
+ * single-finger tap immediately followed by a finger down results in a
+ * button down event, subsequent finger motion thus triggers a drag. The
+ * button is released on finger up. See @ref tapndrag for more details.
+ *
+ * @param device The device to configure
+ * @param enable @ref LIBINPUT_CONFIG_DRAG_ENABLED to enable, @ref
+ * LIBINPUT_CONFIG_DRAG_DISABLED to disable tap-and-drag
+ *
+ * @see libinput_device_config_tap_drag_get_enabled
+ * @see libinput_device_config_tap_drag_get_default_enabled
+ */
+enum libinput_config_status
+libinput_device_config_tap_set_drag_enabled(struct libinput_device *device,
+					    enum libinput_config_drag_state enable);
+
+/**
+ * @ingroup config
+ *
+ * Return whether tap-and-drag is enabled or disabled on this device.
+ *
+ * @param device The device to check
+ * @retval LIBINPUT_CONFIG_DRAG_ENABLED if tap-and-drag is enabled
+ * @retval LIBINPUT_CONFIG_DRAG_DISABLED if tap-and-drag is
+ * disabled
+ *
+ * @see libinput_device_config_tap_drag_set_enabled
+ * @see libinput_device_config_tap_drag_get_default_enabled
+ */
+enum libinput_config_drag_state
+libinput_device_config_tap_get_drag_enabled(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * Return whether tap-and-drag is enabled or disabled by default on this
+ * device.
+ *
+ * @param device The device to check
+ * @retval LIBINPUT_CONFIG_DRAG_ENABLED if tap-and-drag is enabled by
+ * default
+ * @retval LIBINPUT_CONFIG_DRAG_DISABLED if tap-and-drag is
+ * disabled by default
+ *
+ * @see libinput_device_config_tap_drag_set_enabled
+ * @see libinput_device_config_tap_drag_get_enabled
+ */
+enum libinput_config_drag_state
+libinput_device_config_tap_get_default_drag_enabled(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ */
+enum libinput_config_drag_lock_state {
+	/** Drag lock is to be disabled, or is currently disabled */
+	LIBINPUT_CONFIG_DRAG_LOCK_DISABLED,
+	/** Drag lock is to be enabled, or is currently disabled */
+	LIBINPUT_CONFIG_DRAG_LOCK_ENABLED,
+};
+
+/**
+ * @ingroup config
+ *
+ * Enable or disable drag-lock during tapping on this device. When enabled,
+ * a finger may be lifted and put back on the touchpad within a timeout and
+ * the drag process continues. When disabled, lifting the finger during a
+ * tap-and-drag will immediately stop the drag. See @ref tapndrag for
+ * details.
+ *
+ * Enabling drag lock on a device that has tapping disabled is permitted,
+ * but has no effect until tapping is enabled.
+ *
+ * @param device The device to configure
+ * @param enable @ref LIBINPUT_CONFIG_DRAG_LOCK_ENABLED to enable drag lock
+ * or @ref LIBINPUT_CONFIG_DRAG_LOCK_DISABLED to disable drag lock
+ *
+ * @return A config status code. Disabling drag lock on a device that does not
+ * support tapping always succeeds.
+ *
+ * @see libinput_device_config_tap_get_drag_lock_enabled
+ * @see libinput_device_config_tap_get_default_drag_lock_enabled
+ */
+enum libinput_config_status
+libinput_device_config_tap_set_drag_lock_enabled(struct libinput_device *device,
+						 enum libinput_config_drag_lock_state enable);
+
+/**
+ * @ingroup config
+ *
+ * Check if drag-lock during tapping is enabled on this device. If the
+ * device does not support tapping, this function always returns
+ * @ref LIBINPUT_CONFIG_DRAG_LOCK_DISABLED.
+ *
+ * Drag lock may be enabled even when tapping is disabled.
+ *
+ * @param device The device to configure
+ *
+ * @retval LIBINPUT_CONFIG_DRAG_LOCK_ENABLED If drag lock is currently enabled
+ * @retval LIBINPUT_CONFIG_DRAG_LOCK_DISABLED If drag lock is currently disabled
+ *
+ * @see libinput_device_config_tap_set_drag_lock_enabled
+ * @see libinput_device_config_tap_get_default_drag_lock_enabled
+ */
+enum libinput_config_drag_lock_state
+libinput_device_config_tap_get_drag_lock_enabled(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * Check if drag-lock during tapping is enabled by default on this device.
+ * If the device does not support tapping, this function always returns
+ * @ref LIBINPUT_CONFIG_DRAG_LOCK_DISABLED.
+ *
+ * Drag lock may be enabled by default even when tapping is disabled by
+ * default.
+ *
+ * @param device The device to configure
+ *
+ * @retval LIBINPUT_CONFIG_DRAG_LOCK_ENABLED If drag lock is enabled by
+ * default
+ * @retval LIBINPUT_CONFIG_DRAG_LOCK_DISABLED If drag lock is disabled by
+ * default
+ *
+ * @see libinput_device_config_tap_set_drag_lock_enabled
+ * @see libinput_device_config_tap_get_drag_lock_enabled
+ */
+enum libinput_config_drag_lock_state
+libinput_device_config_tap_get_default_drag_lock_enabled(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * Check if the device can be calibrated via a calibration matrix.
+ *
+ * @param device The device to check
+ * @return Non-zero if the device can be calibrated, zero otherwise.
+ *
+ * @see libinput_device_config_calibration_set_matrix
+ * @see libinput_device_config_calibration_get_matrix
+ * @see libinput_device_config_calibration_get_default_matrix
+ */
+int
+libinput_device_config_calibration_has_matrix(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * Apply the 3x3 transformation matrix to absolute device coordinates. This
+ * matrix has no effect on relative events.
+ *
+ * Given a 6-element array [a, b, c, d, e, f], the matrix is applied as
+ * @code
+ * [ a  b  c ]   [ x ]
+ * [ d  e  f ] * [ y ]
+ * [ 0  0  1 ]   [ 1 ]
+ * @endcode
+ *
+ * The translation component (c, f) is expected to be normalized to the
+ * device coordinate range. For example, the matrix
+ * @code
+ * [ 1 0  1 ]
+ * [ 0 1 -1 ]
+ * [ 0 0  1 ]
+ * @endcode
+ * moves all coordinates by 1 device-width to the right and 1 device-height
+ * up.
+ *
+ * The rotation matrix for rotation around the origin is defined as
+ * @code
+ * [ cos(a) -sin(a) 0 ]
+ * [ sin(a)  cos(a) 0 ]
+ * [   0      0     1 ]
+ * @endcode
+ * Note that any rotation requires an additional translation component to
+ * translate the rotated coordinates back into the original device space.
+ * The rotation matrixes for 90, 180 and 270 degrees clockwise are:
+ * @code
+ * 90 deg cw:		180 deg cw:		270 deg cw:
+ * [ 0 -1 1]		[ -1  0 1]		[  0 1 0 ]
+ * [ 1  0 0]		[  0 -1 1]		[ -1 0 1 ]
+ * [ 0  0 1]		[  0  0 1]		[  0 0 1 ]
+ * @endcode
+ *
+ * @param device The device to configure
+ * @param matrix An array representing the first two rows of a 3x3 matrix as
+ * described above.
+ *
+ * @return A config status code.
+ *
+ * @see libinput_device_config_calibration_has_matrix
+ * @see libinput_device_config_calibration_get_matrix
+ * @see libinput_device_config_calibration_get_default_matrix
+ */
+enum libinput_config_status
+libinput_device_config_calibration_set_matrix(struct libinput_device *device,
+					      const float matrix[6]);
+
+/**
+ * @ingroup config
+ *
+ * Return the current calibration matrix for this device.
+ *
+ * @param device The device to configure
+ * @param matrix Set to the array representing the first two rows of a 3x3 matrix as
+ * described in libinput_device_config_calibration_set_matrix().
+ *
+ * @return 0 if no calibration is set and the returned matrix is the
+ * identity matrix, 1 otherwise
+ *
+ * @see libinput_device_config_calibration_has_matrix
+ * @see libinput_device_config_calibration_set_matrix
+ * @see libinput_device_config_calibration_get_default_matrix
+ */
+int
+libinput_device_config_calibration_get_matrix(struct libinput_device *device,
+					      float matrix[6]);
+
+/**
+ * @ingroup config
+ *
+ * Return the default calibration matrix for this device. On most devices,
+ * this is the identity matrix. If the udev property
+ * <b>LIBINPUT_CALIBRATION_MATRIX</b> is set on the respective udev device,
+ * that property's value becomes the default matrix, see @ref udev_config.
+ *
+ * @param device The device to configure
+ * @param matrix Set to the array representing the first two rows of a 3x3 matrix as
+ * described in libinput_device_config_calibration_set_matrix().
+ *
+ * @return 0 if no calibration is set and the returned matrix is the
+ * identity matrix, 1 otherwise
+ *
+ * @see libinput_device_config_calibration_has_matrix
+ * @see libinput_device_config_calibration_set_matrix
+ * @see libinput_device_config_calibration_get_default_matrix
+ */
+int
+libinput_device_config_calibration_get_default_matrix(struct libinput_device *device,
+						      float matrix[6]);
+
+/**
+ * @ingroup config
+ *
+ * The send-event mode of a device defines when a device may generate events
+ * and pass those events to the caller.
+ */
+enum libinput_config_send_events_mode {
+	/**
+	 * Send events from this device normally. This is a placeholder
+	 * mode only, any device detected by libinput can be enabled. Do not
+	 * test for this value as bitmask.
+	 */
+	LIBINPUT_CONFIG_SEND_EVENTS_ENABLED = 0,
+	/**
+	 * Do not send events through this device. Depending on the device,
+	 * this may close all file descriptors on the device or it may leave
+	 * the file descriptors open and route events through a different
+	 * device.
+	 *
+	 * If this bit field is set, other disable modes may be
+	 * ignored. For example, if both @ref
+	 * LIBINPUT_CONFIG_SEND_EVENTS_DISABLED and @ref
+	 * LIBINPUT_CONFIG_SEND_EVENTS_DISABLED_ON_EXTERNAL_MOUSE are set,
+	 * the device remains disabled when all external pointer devices are
+	 * unplugged.
+	 */
+	LIBINPUT_CONFIG_SEND_EVENTS_DISABLED = (1 << 0),
+	/**
+	 * If an external pointer device is plugged in, do not send events
+	 * from this device. This option may be available on built-in
+	 * touchpads.
+	 */
+	LIBINPUT_CONFIG_SEND_EVENTS_DISABLED_ON_EXTERNAL_MOUSE = (1 << 1),
+};
+
+/**
+ * @ingroup config
+ *
+ * Return the possible send-event modes for this device. These modes define
+ * when a device may process and send events.
+ *
+ * @param device The device to configure
+ *
+ * @return A bitmask of possible modes.
+ *
+ * @see libinput_device_config_send_events_set_mode
+ * @see libinput_device_config_send_events_get_mode
+ * @see libinput_device_config_send_events_get_default_mode
+ */
+uint32_t
+libinput_device_config_send_events_get_modes(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * Set the send-event mode for this device. The mode defines when the device
+ * processes and sends events to the caller.
+ *
+ * The selected mode may not take effect immediately. Events already
+ * received and processed from this device are unaffected and will be passed
+ * to the caller on the next call to libinput_get_event().
+ *
+ * If the mode is a bitmask of @ref libinput_config_send_events_mode,
+ * the device may wait for or generate events until it is in a neutral
+ * state. For example, this may include waiting for or generating button
+ * release events.
+ *
+ * If the device is already suspended, this function does nothing and
+ * returns success. Changing the send-event mode on a device that has been
+ * removed is permitted.
+ *
+ * @param device The device to configure
+ * @param mode A bitmask of send-events modes
+ *
+ * @return A config status code.
+ *
+ * @see libinput_device_config_send_events_get_modes
+ * @see libinput_device_config_send_events_get_mode
+ * @see libinput_device_config_send_events_get_default_mode
+ */
+enum libinput_config_status
+libinput_device_config_send_events_set_mode(struct libinput_device *device,
+					    uint32_t mode);
+
+/**
+ * @ingroup config
+ *
+ * Get the send-event mode for this device. The mode defines when the device
+ * processes and sends events to the caller.
+ *
+ * If a caller enables the bits for multiple modes, some of which are
+ * subsets of another mode libinput may drop the bits that are subsets. In
+ * other words, don't expect libinput_device_config_send_events_get_mode()
+ * to always return exactly the same bitmask as passed into
+ * libinput_device_config_send_events_set_mode().
+ *
+ * @param device The device to configure
+ * @return The current bitmask of the send-event mode for this device.
+ *
+ * @see libinput_device_config_send_events_get_modes
+ * @see libinput_device_config_send_events_set_mode
+ * @see libinput_device_config_send_events_get_default_mode
+ */
+uint32_t
+libinput_device_config_send_events_get_mode(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * Get the default send-event mode for this device. The mode defines when
+ * the device processes and sends events to the caller.
+ *
+ * @param device The device to configure
+ * @return The bitmask of the send-event mode for this device.
+ *
+ * @see libinput_device_config_send_events_get_modes
+ * @see libinput_device_config_send_events_set_mode
+ * @see libinput_device_config_send_events_get_mode
+ */
+uint32_t
+libinput_device_config_send_events_get_default_mode(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * Check if a device uses libinput-internal pointer-acceleration.
+ *
+ * @param device The device to configure
+ *
+ * @return 0 if the device is not accelerated, nonzero if it is accelerated
+ *
+ * @see libinput_device_config_accel_set_speed
+ * @see libinput_device_config_accel_get_speed
+ * @see libinput_device_config_accel_get_default_speed
+ */
+int
+libinput_device_config_accel_is_available(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * Set the pointer acceleration speed of this pointer device within a range
+ * of [-1, 1], where 0 is the default acceleration for this device, -1 is
+ * the slowest acceleration and 1 is the maximum acceleration available on
+ * this device. The actual pointer acceleration mechanism is
+ * implementation-dependent, as is the number of steps available within the
+ * range. libinput picks the semantically closest acceleration step if the
+ * requested value does not match a discrete setting.
+ *
+ * @param device The device to configure
+ * @param speed The normalized speed, in a range of [-1, 1]
+ *
+ * @return A config status code
+ *
+ * @see libinput_device_config_accel_is_available
+ * @see libinput_device_config_accel_get_speed
+ * @see libinput_device_config_accel_get_default_speed
+ */
+enum libinput_config_status
+libinput_device_config_accel_set_speed(struct libinput_device *device,
+				       double speed);
+
+/**
+ * @ingroup config
+ *
+ * Get the current pointer acceleration setting for this pointer device. The
+ * returned value is normalized to a range of [-1, 1].
+ * See libinput_device_config_accel_set_speed() for details.
+ *
+ * @param device The device to configure
+ *
+ * @return The current speed, range -1 to 1
+ *
+ * @see libinput_device_config_accel_is_available
+ * @see libinput_device_config_accel_set_speed
+ * @see libinput_device_config_accel_get_default_speed
+ */
+double
+libinput_device_config_accel_get_speed(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * Return the default speed setting for this device, normalized to a range
+ * of [-1, 1].
+ * See libinput_device_config_accel_set_speed() for details.
+ *
+ * @param device The device to configure
+ * @return The default speed setting for this device.
+ *
+ * @see libinput_device_config_accel_is_available
+ * @see libinput_device_config_accel_set_speed
+ * @see libinput_device_config_accel_get_speed
+ */
+double
+libinput_device_config_accel_get_default_speed(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ */
+enum libinput_config_accel_profile {
+	/**
+	 * Placeholder for devices that don't have a configurable pointer
+	 * acceleration profile.
+	 */
+	LIBINPUT_CONFIG_ACCEL_PROFILE_NONE = 0,
+	/**
+	 * A flat acceleration profile. Pointer motion is accelerated by a
+	 * constant (device-specific) factor, depending on the current
+	 * speed.
+	 *
+	 * @see libinput_device_config_accel_set_speed
+	 */
+	LIBINPUT_CONFIG_ACCEL_PROFILE_FLAT = (1 << 0),
+
+	/**
+	 * An adaptive acceleration profile. Pointer acceleration depends
+	 * on the input speed. This is the default profile for most devices.
+	 */
+	LIBINPUT_CONFIG_ACCEL_PROFILE_ADAPTIVE = (1 << 1),
+};
+
+/**
+ * @ingroup config
+ *
+ * Returns a bitmask of the configurable acceleration modes available on
+ * this device.
+ *
+ * @param device The device to configure
+ *
+ * @return A bitmask of all configurable modes available on this device.
+ */
+uint32_t
+libinput_device_config_accel_get_profiles(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * Set the pointer acceleration profile of this pointer device to the given
+ * mode.
+ *
+ * @param device The device to configure
+ * @param mode The mode to set the device to.
+ *
+ * @return A config status code
+ */
+enum libinput_config_status
+libinput_device_config_accel_set_profile(struct libinput_device *device,
+					 enum libinput_config_accel_profile mode);
+
+/**
+ * @ingroup config
+ *
+ * Get the current pointer acceleration profile for this pointer device.
+ *
+ * @param device The device to configure
+ *
+ * @return The currently configured pointer acceleration profile.
+ */
+enum libinput_config_accel_profile
+libinput_device_config_accel_get_profile(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * Return the default pointer acceleration profile for this pointer device.
+ *
+ * @param device The device to configure
+ *
+ * @return The default acceleration profile for this device.
+ */
+enum libinput_config_accel_profile
+libinput_device_config_accel_get_default_profile(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * Return non-zero if the device supports "natural scrolling".
+ *
+ * In traditional scroll mode, the movement of fingers on a touchpad when
+ * scrolling matches the movement of the scroll bars. When the fingers move
+ * down, the scroll bar moves down, a line of text on the screen moves
+ * towards the upper end of the screen. This also matches scroll wheels on
+ * mice (wheel down, content moves up).
+ *
+ * Natural scrolling is the term coined by Apple for inverted scrolling.
+ * In this mode, the effect of scrolling movement of fingers on a touchpad
+ * resemble physical manipulation of paper. When the fingers move down, a
+ * line of text on the screen moves down (scrollbars move up). This is the
+ * opposite of scroll wheels on mice.
+ *
+ * A device supporting natural scrolling can be switched between traditional
+ * scroll mode and natural scroll mode.
+ *
+ * @param device The device to configure
+ *
+ * @return Zero if natural scrolling is not supported, non-zero if natural
+ * scrolling is supported by this device
+ *
+ * @see libinput_device_config_scroll_set_natural_scroll_enabled
+ * @see libinput_device_config_scroll_get_natural_scroll_enabled
+ * @see libinput_device_config_scroll_get_default_natural_scroll_enabled
+ */
+int
+libinput_device_config_scroll_has_natural_scroll(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * Enable or disable natural scrolling on the device.
+ *
+ * @param device The device to configure
+ * @param enable non-zero to enable, zero to disable natural scrolling
+ *
+ * @return A config status code
+ *
+ * @see libinput_device_config_scroll_has_natural_scroll
+ * @see libinput_device_config_scroll_get_natural_scroll_enabled
+ * @see libinput_device_config_scroll_get_default_natural_scroll_enabled
+ */
+enum libinput_config_status
+libinput_device_config_scroll_set_natural_scroll_enabled(struct libinput_device *device,
+							 int enable);
+/**
+ * @ingroup config
+ *
+ * Get the current mode for scrolling on this device
+ *
+ * @param device The device to configure
+ *
+ * @return Zero if natural scrolling is disabled, non-zero if enabled
+ *
+ * @see libinput_device_config_scroll_has_natural_scroll
+ * @see libinput_device_config_scroll_set_natural_scroll_enabled
+ * @see libinput_device_config_scroll_get_default_natural_scroll_enabled
+ */
+int
+libinput_device_config_scroll_get_natural_scroll_enabled(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * Get the default mode for scrolling on this device
+ *
+ * @param device The device to configure
+ *
+ * @return Zero if natural scrolling is disabled by default, non-zero if enabled
+ *
+ * @see libinput_device_config_scroll_has_natural_scroll
+ * @see libinput_device_config_scroll_set_natural_scroll_enabled
+ * @see libinput_device_config_scroll_get_natural_scroll_enabled
+ */
+int
+libinput_device_config_scroll_get_default_natural_scroll_enabled(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * Check if a device has a configuration that supports left-handed usage.
+ *
+ * @param device The device to configure
+ * @return Non-zero if the device can be set to left-handed, or zero
+ * otherwise
+ *
+ * @see libinput_device_config_left_handed_set
+ * @see libinput_device_config_left_handed_get
+ * @see libinput_device_config_left_handed_get_default
+ */
+int
+libinput_device_config_left_handed_is_available(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * Set the left-handed configuration of the device.
+ *
+ * The exact behavior is device-dependent. On a mouse and most pointing
+ * devices, left and right buttons are swapped but the middle button is
+ * unmodified. On a touchpad, physical buttons (if present) are swapped. On a
+ * clickpad, the top and bottom software-emulated buttons are swapped where
+ * present, the main area of the touchpad remains a left button. Tapping and
+ * clickfinger behavior is not affected by this setting.
+ *
+ * Changing the left-handed configuration of a device may not take effect
+ * until all buttons have been logically released.
+ *
+ * @param device The device to configure
+ * @param left_handed Zero to disable, non-zero to enable left-handed mode
+ * @return A configuration status code
+ *
+ * @see libinput_device_config_left_handed_is_available
+ * @see libinput_device_config_left_handed_get
+ * @see libinput_device_config_left_handed_get_default
+ */
+enum libinput_config_status
+libinput_device_config_left_handed_set(struct libinput_device *device,
+				       int left_handed);
+
+/**
+ * @ingroup config
+ *
+ * Get the current left-handed configuration of the device.
+ *
+ * @param device The device to configure
+ * @return Zero if the device is in right-handed mode, non-zero if the
+ * device is in left-handed mode
+ *
+ * @see libinput_device_config_left_handed_is_available
+ * @see libinput_device_config_left_handed_set
+ * @see libinput_device_config_left_handed_get_default
+ */
+int
+libinput_device_config_left_handed_get(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * Get the default left-handed configuration of the device.
+ *
+ * @param device The device to configure
+ * @return Zero if the device is in right-handed mode by default, or non-zero
+ * if the device is in left-handed mode by default
+ *
+ * @see libinput_device_config_left_handed_is_available
+ * @see libinput_device_config_left_handed_set
+ * @see libinput_device_config_left_handed_get
+ */
+int
+libinput_device_config_left_handed_get_default(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * The click method defines when to generate software-emulated
+ * buttons, usually on a device that does not have a specific physical
+ * button available.
+ */
+enum libinput_config_click_method {
+	/**
+	 * Do not send software-emulated button events. This has no effect
+	 * on events generated by physical buttons.
+	 */
+	LIBINPUT_CONFIG_CLICK_METHOD_NONE = 0,
+	/**
+	 * Use software-button areas (see @ref clickfinger) to generate
+	 * button events.
+	 */
+	LIBINPUT_CONFIG_CLICK_METHOD_BUTTON_AREAS = (1 << 0),
+	/**
+	 * The number of fingers decides which button press to generate.
+	 */
+	LIBINPUT_CONFIG_CLICK_METHOD_CLICKFINGER = (1 << 1),
+};
+
+/**
+ * @ingroup config
+ *
+ * Check which button click methods a device supports. The button click
+ * method defines when to generate software-emulated buttons, usually on a
+ * device that does not have a specific physical button available.
+ *
+ * @param device The device to configure
+ *
+ * @return A bitmask of possible methods.
+ *
+ * @see libinput_device_config_click_get_methods
+ * @see libinput_device_config_click_set_method
+ * @see libinput_device_config_click_get_method
+ */
+uint32_t
+libinput_device_config_click_get_methods(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * Set the button click method for this device. The button click
+ * method defines when to generate software-emulated buttons, usually on a
+ * device that does not have a specific physical button available.
+ *
+ * @note The selected click method may not take effect immediately. The
+ * device may require changing to a neutral state first before activating
+ * the new method.
+ *
+ * @param device The device to configure
+ * @param method The button click method
+ *
+ * @return A config status code
+ *
+ * @see libinput_device_config_click_get_methods
+ * @see libinput_device_config_click_get_method
+ * @see libinput_device_config_click_get_default_method
+ */
+enum libinput_config_status
+libinput_device_config_click_set_method(struct libinput_device *device,
+					enum libinput_config_click_method method);
+/**
+ * @ingroup config
+ *
+ * Get the button click method for this device. The button click
+ * method defines when to generate software-emulated buttons, usually on a
+ * device that does not have a specific physical button available.
+ *
+ * @param device The device to configure
+ *
+ * @return The current button click method for this device
+ *
+ * @see libinput_device_config_click_get_methods
+ * @see libinput_device_config_click_set_method
+ * @see libinput_device_config_click_get_default_method
+ */
+enum libinput_config_click_method
+libinput_device_config_click_get_method(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * Get the default button click method for this device. The button click
+ * method defines when to generate software-emulated buttons, usually on a
+ * device that does not have a specific physical button available.
+ *
+ * @param device The device to configure
+ *
+ * @return The default button click method for this device
+ *
+ * @see libinput_device_config_click_get_methods
+ * @see libinput_device_config_click_set_method
+ * @see libinput_device_config_click_get_method
+ */
+enum libinput_config_click_method
+libinput_device_config_click_get_default_method(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ */
+enum libinput_config_middle_emulation_state {
+	/**
+	 * Middle mouse button emulation is to be disabled, or
+	 * is currently disabled.
+	 */
+	LIBINPUT_CONFIG_MIDDLE_EMULATION_DISABLED,
+	/**
+	 * Middle mouse button emulation is to be enabled, or
+	 * is currently enabled.
+	 */
+	LIBINPUT_CONFIG_MIDDLE_EMULATION_ENABLED,
+};
+
+/**
+ * @ingroup config
+ *
+ * Check if middle mouse button emulation configuration is available on this
+ * device. See @ref middle_button_emulation for details.
+ *
+ * @note Some devices provide middle mouse button emulation but do not allow
+ * enabling/disabling that emulation. These devices return zero in
+ * libinput_device_config_middle_emulation_is_available().
+ *
+ * @param device The device to query
+ *
+ * @return Non-zero if middle mouse button emulation is available and can be
+ * configured, zero otherwise.
+ *
+ * @see libinput_device_config_middle_emulation_set_enabled
+ * @see libinput_device_config_middle_emulation_get_enabled
+ * @see libinput_device_config_middle_emulation_get_default_enabled
+ */
+int
+libinput_device_config_middle_emulation_is_available(
+		struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * Enable or disable middle button emulation on this device. When enabled, a
+ * simultaneous press of the left and right button generates a middle mouse
+ * button event. Releasing the buttons generates a middle mouse button
+ * release, the left and right button events are discarded otherwise.
+ *
+ * See @ref middle_button_emulation for details.
+ *
+ * @param device The device to configure
+ * @param enable @ref LIBINPUT_CONFIG_MIDDLE_EMULATION_DISABLED to
+ * disable, @ref LIBINPUT_CONFIG_MIDDLE_EMULATION_ENABLED To enable
+ * middle button emulation.
+ *
+ * @return A config status code. Disabling middle button emulation on a
+ * device that does not support middle button emulation always succeeds.
+ *
+ * @see libinput_device_config_middle_emulation_is_available
+ * @see libinput_device_config_middle_emulation_get_enabled
+ * @see libinput_device_config_middle_emulation_get_default_enabled
+ */
+enum libinput_config_status
+libinput_device_config_middle_emulation_set_enabled(
+		struct libinput_device *device,
+		enum libinput_config_middle_emulation_state enable);
+
+/**
+ * @ingroup config
+ *
+ * Check if configurable middle button emulation is enabled on this device.
+ * See @ref middle_button_emulation for details.
+ *
+ * If the device does not have configurable middle button emulation, this
+ * function returns @ref LIBINPUT_CONFIG_MIDDLE_EMULATION_DISABLED.
+ *
+ * @note Some devices provide middle mouse button emulation but do not allow
+ * enabling/disabling that emulation. These devices always return @ref
+ * LIBINPUT_CONFIG_MIDDLE_EMULATION_DISABLED.
+ *
+ * @param device The device to configure
+ * @return @ref LIBINPUT_CONFIG_MIDDLE_EMULATION_DISABLED if disabled
+ * or not available/configurable, @ref
+ * LIBINPUT_CONFIG_MIDDLE_EMULATION_ENABLED If enabled.
+ *
+ * @see libinput_device_config_middle_emulation_is_available
+ * @see libinput_device_config_middle_emulation_set_enabled
+ * @see libinput_device_config_middle_emulation_get_default_enabled
+ */
+enum libinput_config_middle_emulation_state
+libinput_device_config_middle_emulation_get_enabled(
+		struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * Check if configurable middle button emulation is enabled by default on
+ * this device. See @ref middle_button_emulation for details.
+ *
+ * If the device does not have configurable middle button
+ * emulation, this function returns @ref
+ * LIBINPUT_CONFIG_MIDDLE_EMULATION_DISABLED.
+ *
+ * @note Some devices provide middle mouse button emulation but do not allow
+ * enabling/disabling that emulation. These devices always return @ref
+ * LIBINPUT_CONFIG_MIDDLE_EMULATION_DISABLED.
+ *
+ * @param device The device to configure
+ * @return @ref LIBINPUT_CONFIG_MIDDLE_EMULATION_DISABLED If disabled
+ * or not available, @ref LIBINPUT_CONFIG_MIDDLE_EMULATION_ENABLED if
+ * enabled.
+ *
+ * @see libinput_device_config_middle_emulation_is_available
+ * @see libinput_device_config_middle_emulation_set_enabled
+ * @see libinput_device_config_middle_emulation_get_enabled
+ */
+enum libinput_config_middle_emulation_state
+libinput_device_config_middle_emulation_get_default_enabled(
+		struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * The scroll method of a device selects when to generate scroll axis events
+ * instead of pointer motion events.
+ */
+enum libinput_config_scroll_method {
+	/**
+	 * Never send scroll events instead of pointer motion events.
+	 * This has no effect on events generated by scroll wheels.
+	 */
+	LIBINPUT_CONFIG_SCROLL_NO_SCROLL = 0,
+	/**
+	 * Send scroll events when two fingers are logically down on the
+	 * device.
+	 */
+	LIBINPUT_CONFIG_SCROLL_2FG = (1 << 0),
+	/**
+	 * Send scroll events when a finger moves along the bottom or
+	 * right edge of a device.
+	 */
+	LIBINPUT_CONFIG_SCROLL_EDGE = (1 << 1),
+	/**
+	 * Send scroll events when a button is down and the device moves
+	 * along a scroll-capable axis.
+	 */
+	LIBINPUT_CONFIG_SCROLL_ON_BUTTON_DOWN = (1 << 2),
+};
+
+/**
+ * @ingroup config
+ *
+ * Check which scroll methods a device supports. The method defines when to
+ * generate scroll axis events instead of pointer motion events.
+ *
+ * @param device The device to configure
+ *
+ * @return A bitmask of possible methods.
+ *
+ * @see libinput_device_config_scroll_set_method
+ * @see libinput_device_config_scroll_get_method
+ * @see libinput_device_config_scroll_get_default_method
+ * @see libinput_device_config_scroll_set_button
+ * @see libinput_device_config_scroll_get_button
+ * @see libinput_device_config_scroll_get_default_button
+ */
+uint32_t
+libinput_device_config_scroll_get_methods(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * Set the scroll method for this device. The method defines when to
+ * generate scroll axis events instead of pointer motion events.
+ *
+ * @note Setting @ref LIBINPUT_CONFIG_SCROLL_ON_BUTTON_DOWN enables
+ * the scroll method, but scrolling is only activated when the configured
+ * button is held down. If no button is set, i.e.
+ * libinput_device_config_scroll_get_button() returns 0, scrolling
+ * cannot activate.
+ *
+ * @param device The device to configure
+ * @param method The scroll method for this device.
+ *
+ * @return A config status code.
+ *
+ * @see libinput_device_config_scroll_get_methods
+ * @see libinput_device_config_scroll_get_method
+ * @see libinput_device_config_scroll_get_default_method
+ * @see libinput_device_config_scroll_set_button
+ * @see libinput_device_config_scroll_get_button
+ * @see libinput_device_config_scroll_get_default_button
+ */
+enum libinput_config_status
+libinput_device_config_scroll_set_method(struct libinput_device *device,
+					 enum libinput_config_scroll_method method);
+
+/**
+ * @ingroup config
+ *
+ * Get the scroll method for this device. The method defines when to
+ * generate scroll axis events instead of pointer motion events.
+ *
+ * @param device The device to configure
+ * @return The current scroll method for this device.
+ *
+ * @see libinput_device_config_scroll_get_methods
+ * @see libinput_device_config_scroll_set_method
+ * @see libinput_device_config_scroll_get_default_method
+ * @see libinput_device_config_scroll_set_button
+ * @see libinput_device_config_scroll_get_button
+ * @see libinput_device_config_scroll_get_default_button
+ */
+enum libinput_config_scroll_method
+libinput_device_config_scroll_get_method(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * Get the default scroll method for this device. The method defines when to
+ * generate scroll axis events instead of pointer motion events.
+ *
+ * @param device The device to configure
+ * @return The default scroll method for this device.
+ *
+ * @see libinput_device_config_scroll_get_methods
+ * @see libinput_device_config_scroll_set_method
+ * @see libinput_device_config_scroll_get_method
+ * @see libinput_device_config_scroll_set_button
+ * @see libinput_device_config_scroll_get_button
+ * @see libinput_device_config_scroll_get_default_button
+ */
+enum libinput_config_scroll_method
+libinput_device_config_scroll_get_default_method(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * Set the button for the @ref LIBINPUT_CONFIG_SCROLL_ON_BUTTON_DOWN method
+ * for this device.
+ *
+ * When the current scroll method is set to @ref
+ * LIBINPUT_CONFIG_SCROLL_ON_BUTTON_DOWN, no button press/release events
+ * will be send for the configured button.
+ *
+ * When the configured button is pressed, any motion events along a
+ * scroll-capable axis are turned into scroll axis events.
+ *
+ * @note Setting the button does not change the scroll method. To change the
+ * scroll method call libinput_device_config_scroll_set_method().
+ *
+ * If the button is 0, button scrolling is effectively disabled.
+ *
+ * @param device The device to configure
+ * @param button The button which when pressed switches to sending scroll events
+ *
+ * @return A config status code
+ * @retval LIBINPUT_CONFIG_STATUS_SUCCESS On success
+ * @retval LIBINPUT_CONFIG_STATUS_UNSUPPORTED If @ref
+ * LIBINPUT_CONFIG_SCROLL_ON_BUTTON_DOWN is not supported
+ * @retval LIBINPUT_CONFIG_STATUS_INVALID The given button does not
+ * exist on this device
+ *
+ * @see libinput_device_config_scroll_get_methods
+ * @see libinput_device_config_scroll_set_method
+ * @see libinput_device_config_scroll_get_method
+ * @see libinput_device_config_scroll_get_default_method
+ * @see libinput_device_config_scroll_get_button
+ * @see libinput_device_config_scroll_get_default_button
+ */
+enum libinput_config_status
+libinput_device_config_scroll_set_button(struct libinput_device *device,
+					 uint32_t button);
+
+/**
+ * @ingroup config
+ *
+ * Get the button for the @ref LIBINPUT_CONFIG_SCROLL_ON_BUTTON_DOWN method
+ * for this device.
+ *
+ * If @ref LIBINPUT_CONFIG_SCROLL_ON_BUTTON_DOWN scroll method is not
+ * supported, or no button is set, this function returns 0.
+ *
+ * @note The return value is independent of the currently selected
+ * scroll-method. For button scrolling to activate, a device must have the
+ * @ref LIBINPUT_CONFIG_SCROLL_ON_BUTTON_DOWN method enabled, and a non-zero
+ * button set as scroll button.
+ *
+ * @param device The device to configure
+ * @return The button which when pressed switches to sending scroll events
+ *
+ * @see libinput_device_config_scroll_get_methods
+ * @see libinput_device_config_scroll_set_method
+ * @see libinput_device_config_scroll_get_method
+ * @see libinput_device_config_scroll_get_default_method
+ * @see libinput_device_config_scroll_set_button
+ * @see libinput_device_config_scroll_get_default_button
+ */
+uint32_t
+libinput_device_config_scroll_get_button(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * Get the default button for the @ref LIBINPUT_CONFIG_SCROLL_ON_BUTTON_DOWN
+ * method for this device.
+ *
+ * If @ref LIBINPUT_CONFIG_SCROLL_ON_BUTTON_DOWN scroll method is not supported,
+ * or no default button is set, this function returns 0.
+ *
+ * @param device The device to configure
+ * @return The default button for the @ref
+ * LIBINPUT_CONFIG_SCROLL_ON_BUTTON_DOWN method
+ *
+ * @see libinput_device_config_scroll_get_methods
+ * @see libinput_device_config_scroll_set_method
+ * @see libinput_device_config_scroll_get_method
+ * @see libinput_device_config_scroll_get_default_method
+ * @see libinput_device_config_scroll_set_button
+ * @see libinput_device_config_scroll_get_button
+ */
+uint32_t
+libinput_device_config_scroll_get_default_button(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * Possible states for the disable-while-typing feature. See @ref
+ * disable-while-typing for details.
+ */
+enum libinput_config_dwt_state {
+	LIBINPUT_CONFIG_DWT_DISABLED,
+	LIBINPUT_CONFIG_DWT_ENABLED,
+};
+
+/**
+ * @ingroup config
+ *
+ * Check if this device supports configurable disable-while-typing feature.
+ * This feature is usually available on built-in touchpads and disables the
+ * touchpad while typing. See @ref disable-while-typing for details.
+ *
+ * @param device The device to configure
+ * @return 0 if this device does not support disable-while-typing, or 1
+ * otherwise.
+ *
+ * @see libinput_device_config_dwt_set_enabled
+ * @see libinput_device_config_dwt_get_enabled
+ * @see libinput_device_config_dwt_get_default_enabled
+ */
+int
+libinput_device_config_dwt_is_available(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * Enable or disable the disable-while-typing feature. When enabled, the
+ * device will be disabled while typing and for a short period after. See
+ * @ref disable-while-typing for details.
+ *
+ * @note Enabling or disabling disable-while-typing may not take effect
+ * immediately.
+ *
+ * @param device The device to configure
+ * @param enable @ref LIBINPUT_CONFIG_DWT_DISABLED to disable
+ * disable-while-typing, @ref LIBINPUT_CONFIG_DWT_ENABLED to enable
+ *
+ * @return A config status code. Disabling disable-while-typing on a
+ * device that does not support the feature always succeeds.
+ *
+ * @see libinput_device_config_dwt_is_available
+ * @see libinput_device_config_dwt_get_enabled
+ * @see libinput_device_config_dwt_get_default_enabled
+ */
+enum libinput_config_status
+libinput_device_config_dwt_set_enabled(struct libinput_device *device,
+				       enum libinput_config_dwt_state enable);
+
+/**
+ * @ingroup config
+ *
+ * Check if the disable-while typing feature is currently enabled on this
+ * device. If the device does not support disable-while-typing, this
+ * function returns @ref LIBINPUT_CONFIG_DWT_DISABLED.
+ *
+ * @param device The device to configure
+ * @return @ref LIBINPUT_CONFIG_DWT_DISABLED if disabled, @ref
+ * LIBINPUT_CONFIG_DWT_ENABLED if enabled.
+ *
+ * @see libinput_device_config_dwt_is_available
+ * @see libinput_device_config_dwt_set_enabled
+ * @see libinput_device_config_dwt_get_default_enabled
+ */
+enum libinput_config_dwt_state
+libinput_device_config_dwt_get_enabled(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * Check if the disable-while typing feature is enabled on this device by
+ * default. If the device does not support disable-while-typing, this
+ * function returns @ref LIBINPUT_CONFIG_DWT_DISABLED.
+ *
+ * @param device The device to configure
+ * @return @ref LIBINPUT_CONFIG_DWT_DISABLED if disabled, @ref
+ * LIBINPUT_CONFIG_DWT_ENABLED if enabled.
+ *
+ * @see libinput_device_config_dwt_is_available
+ * @see libinput_device_config_dwt_set_enabled
+ * @see libinput_device_config_dwt_get_enabled
+ */
+enum libinput_config_dwt_state
+libinput_device_config_dwt_get_default_enabled(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * Check whether a device can have a custom rotation applied.
+ *
+ * @param device The device to configure
+ * @return Non-zero if a device can be rotated, zero otherwise.
+ *
+ * @see libinput_device_config_rotation_set_angle
+ * @see libinput_device_config_rotation_get_angle
+ * @see libinput_device_config_rotation_get_default_angle
+ */
+int
+libinput_device_config_rotation_is_available(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * Set the rotation of a device in degrees clockwise off the logical neutral
+ * position. Any subsequent motion events are adjusted according to the
+ * given angle.
+ *
+ * The angle has to be in the range of [0, 360[ degrees, otherwise this
+ * function returns LIBINPUT_CONFIG_STATUS_INVALID. If the angle is a
+ * multiple of 360 or negative, the caller must ensure the correct ranging
+ * before calling this function.
+ *
+ * libinput guarantees that this function accepts multiples of 90 degrees.
+ * If a value is within the [0, 360[ range but not a multiple of 90 degrees,
+ * this function may return LIBINPUT_CONFIG_STATUS_INVALID if the underlying
+ * device or implementation does not support finer-grained rotation angles.
+ *
+ * The rotation angle is applied to all motion events emitted by the device.
+ * Thus, rotating the device also changes the angle required or presented by
+ * scrolling, gestures, etc.
+ *
+ * @param device The device to configure
+ * @param degrees_cw The angle in degrees clockwise
+ * @return A config status code. Setting a rotation of 0 degrees on a
+ * device that does not support rotation always succeeds.
+ *
+ * @see libinput_device_config_rotation_is_available
+ * @see libinput_device_config_rotation_get_angle
+ * @see libinput_device_config_rotation_get_default_angle
+ */
+enum libinput_config_status
+libinput_device_config_rotation_set_angle(struct libinput_device *device,
+					  unsigned int degrees_cw);
+
+/**
+ * @ingroup config
+ *
+ * Get the current rotation of a device in degrees clockwise off the logical
+ * neutral position. If this device does not support rotation, the return
+ * value is always 0.
+ *
+ * @param device The device to configure
+ * @return The angle in degrees clockwise
+ *
+ * @see libinput_device_config_rotation_is_available
+ * @see libinput_device_config_rotation_set_angle
+ * @see libinput_device_config_rotation_get_default_angle
+ */
+unsigned int
+libinput_device_config_rotation_get_angle(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * Get the default rotation of a device in degrees clockwise off the logical
+ * neutral position. If this device does not support rotation, the return
+ * value is always 0.
+ *
+ * @param device The device to configure
+ * @return The default angle in degrees clockwise
+ *
+ * @see libinput_device_config_rotation_is_available
+ * @see libinput_device_config_rotation_set_angle
+ * @see libinput_device_config_rotation_get_angle
+ */
+unsigned int
+libinput_device_config_rotation_get_default_angle(struct libinput_device *device);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* LIBINPUT_H */
diff --git a/external/include/libudev.h b/external/include/libudev.h
new file mode 100644
index 0000000..3f6d0ed
--- /dev/null
+++ b/external/include/libudev.h
@@ -0,0 +1,207 @@
+/***
+  This file is part of systemd.
+
+  Copyright 2008-2012 Kay Sievers <kay@vrfy.org>
+
+  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/>.
+***/
+
+#ifndef _LIBUDEV_H_
+#define _LIBUDEV_H_
+
+#include <stdarg.h>
+#include <sys/sysmacros.h>
+#include <sys/types.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * udev - library context
+ *
+ * reads the udev config and system environment
+ * allows custom logging
+ */
+struct udev;
+struct udev *udev_ref(struct udev *udev);
+struct udev *udev_unref(struct udev *udev);
+struct udev *udev_new(void);
+void udev_set_log_fn(struct udev *udev,
+                            void (*log_fn)(struct udev *udev,
+                                           int priority, const char *file, int line, const char *fn,
+                                           const char *format, va_list args)) __attribute__ ((deprecated));
+int udev_get_log_priority(struct udev *udev) __attribute__ ((deprecated));
+void udev_set_log_priority(struct udev *udev, int priority) __attribute__ ((deprecated));
+void *udev_get_userdata(struct udev *udev);
+void udev_set_userdata(struct udev *udev, void *userdata);
+
+/*
+ * udev_list
+ *
+ * access to libudev generated lists
+ */
+struct udev_list_entry;
+struct udev_list_entry *udev_list_entry_get_next(struct udev_list_entry *list_entry);
+struct udev_list_entry *udev_list_entry_get_by_name(struct udev_list_entry *list_entry, const char *name);
+const char *udev_list_entry_get_name(struct udev_list_entry *list_entry);
+const char *udev_list_entry_get_value(struct udev_list_entry *list_entry);
+/**
+ * udev_list_entry_foreach:
+ * @list_entry: entry to store the current position
+ * @first_entry: first entry to start with
+ *
+ * Helper to iterate over all entries of a list.
+ */
+#define udev_list_entry_foreach(list_entry, first_entry) \
+        for (list_entry = first_entry; \
+             list_entry != NULL; \
+             list_entry = udev_list_entry_get_next(list_entry))
+
+/*
+ * udev_device
+ *
+ * access to sysfs/kernel devices
+ */
+struct udev_device;
+struct udev_device *udev_device_ref(struct udev_device *udev_device);
+struct udev_device *udev_device_unref(struct udev_device *udev_device);
+struct udev *udev_device_get_udev(struct udev_device *udev_device);
+struct udev_device *udev_device_new_from_syspath(struct udev *udev, const char *syspath);
+struct udev_device *udev_device_new_from_devnum(struct udev *udev, char type, dev_t devnum);
+struct udev_device *udev_device_new_from_subsystem_sysname(struct udev *udev, const char *subsystem, const char *sysname);
+struct udev_device *udev_device_new_from_device_id(struct udev *udev, const char *id);
+struct udev_device *udev_device_new_from_environment(struct udev *udev);
+/* udev_device_get_parent_*() does not take a reference on the returned device, it is automatically unref'd with the parent */
+struct udev_device *udev_device_get_parent(struct udev_device *udev_device);
+struct udev_device *udev_device_get_parent_with_subsystem_devtype(struct udev_device *udev_device,
+                                                                  const char *subsystem, const char *devtype);
+/* retrieve device properties */
+const char *udev_device_get_devpath(struct udev_device *udev_device);
+const char *udev_device_get_subsystem(struct udev_device *udev_device);
+const char *udev_device_get_devtype(struct udev_device *udev_device);
+const char *udev_device_get_syspath(struct udev_device *udev_device);
+const char *udev_device_get_sysname(struct udev_device *udev_device);
+const char *udev_device_get_sysnum(struct udev_device *udev_device);
+const char *udev_device_get_devnode(struct udev_device *udev_device);
+int udev_device_get_is_initialized(struct udev_device *udev_device);
+struct udev_list_entry *udev_device_get_devlinks_list_entry(struct udev_device *udev_device);
+struct udev_list_entry *udev_device_get_properties_list_entry(struct udev_device *udev_device);
+struct udev_list_entry *udev_device_get_tags_list_entry(struct udev_device *udev_device);
+struct udev_list_entry *udev_device_get_sysattr_list_entry(struct udev_device *udev_device);
+const char *udev_device_get_property_value(struct udev_device *udev_device, const char *key);
+const char *udev_device_get_driver(struct udev_device *udev_device);
+dev_t udev_device_get_devnum(struct udev_device *udev_device);
+const char *udev_device_get_action(struct udev_device *udev_device);
+unsigned long long int udev_device_get_seqnum(struct udev_device *udev_device);
+unsigned long long int udev_device_get_usec_since_initialized(struct udev_device *udev_device);
+const char *udev_device_get_sysattr_value(struct udev_device *udev_device, const char *sysattr);
+int udev_device_set_sysattr_value(struct udev_device *udev_device, const char *sysattr, char *value);
+int udev_device_has_tag(struct udev_device *udev_device, const char *tag);
+
+/*
+ * udev_monitor
+ *
+ * access to kernel uevents and udev events
+ */
+struct udev_monitor;
+struct udev_monitor *udev_monitor_ref(struct udev_monitor *udev_monitor);
+struct udev_monitor *udev_monitor_unref(struct udev_monitor *udev_monitor);
+struct udev *udev_monitor_get_udev(struct udev_monitor *udev_monitor);
+/* kernel and udev generated events over netlink */
+struct udev_monitor *udev_monitor_new_from_netlink(struct udev *udev, const char *name);
+/* bind socket */
+int udev_monitor_enable_receiving(struct udev_monitor *udev_monitor);
+int udev_monitor_set_receive_buffer_size(struct udev_monitor *udev_monitor, int size);
+int udev_monitor_get_fd(struct udev_monitor *udev_monitor);
+struct udev_device *udev_monitor_receive_device(struct udev_monitor *udev_monitor);
+/* in-kernel socket filters to select messages that get delivered to a listener */
+int udev_monitor_filter_add_match_subsystem_devtype(struct udev_monitor *udev_monitor,
+                                                    const char *subsystem, const char *devtype);
+int udev_monitor_filter_add_match_tag(struct udev_monitor *udev_monitor, const char *tag);
+int udev_monitor_filter_update(struct udev_monitor *udev_monitor);
+int udev_monitor_filter_remove(struct udev_monitor *udev_monitor);
+
+/*
+ * udev_enumerate
+ *
+ * search sysfs for specific devices and provide a sorted list
+ */
+struct udev_enumerate;
+struct udev_enumerate *udev_enumerate_ref(struct udev_enumerate *udev_enumerate);
+struct udev_enumerate *udev_enumerate_unref(struct udev_enumerate *udev_enumerate);
+struct udev *udev_enumerate_get_udev(struct udev_enumerate *udev_enumerate);
+struct udev_enumerate *udev_enumerate_new(struct udev *udev);
+/* device properties filter */
+int udev_enumerate_add_match_subsystem(struct udev_enumerate *udev_enumerate, const char *subsystem);
+int udev_enumerate_add_nomatch_subsystem(struct udev_enumerate *udev_enumerate, const char *subsystem);
+int udev_enumerate_add_match_sysattr(struct udev_enumerate *udev_enumerate, const char *sysattr, const char *value);
+int udev_enumerate_add_nomatch_sysattr(struct udev_enumerate *udev_enumerate, const char *sysattr, const char *value);
+int udev_enumerate_add_match_property(struct udev_enumerate *udev_enumerate, const char *property, const char *value);
+int udev_enumerate_add_match_sysname(struct udev_enumerate *udev_enumerate, const char *sysname);
+int udev_enumerate_add_match_tag(struct udev_enumerate *udev_enumerate, const char *tag);
+int udev_enumerate_add_match_parent(struct udev_enumerate *udev_enumerate, struct udev_device *parent);
+int udev_enumerate_add_match_is_initialized(struct udev_enumerate *udev_enumerate);
+int udev_enumerate_add_syspath(struct udev_enumerate *udev_enumerate, const char *syspath);
+/* run enumeration with active filters */
+int udev_enumerate_scan_devices(struct udev_enumerate *udev_enumerate);
+int udev_enumerate_scan_subsystems(struct udev_enumerate *udev_enumerate);
+/* return device list */
+struct udev_list_entry *udev_enumerate_get_list_entry(struct udev_enumerate *udev_enumerate);
+
+/*
+ * udev_queue
+ *
+ * access to the currently running udev events
+ */
+struct udev_queue;
+struct udev_queue *udev_queue_ref(struct udev_queue *udev_queue);
+struct udev_queue *udev_queue_unref(struct udev_queue *udev_queue);
+struct udev *udev_queue_get_udev(struct udev_queue *udev_queue);
+struct udev_queue *udev_queue_new(struct udev *udev);
+unsigned long long int udev_queue_get_kernel_seqnum(struct udev_queue *udev_queue) __attribute__ ((deprecated));
+unsigned long long int udev_queue_get_udev_seqnum(struct udev_queue *udev_queue) __attribute__ ((deprecated));
+int udev_queue_get_udev_is_active(struct udev_queue *udev_queue);
+int udev_queue_get_queue_is_empty(struct udev_queue *udev_queue);
+int udev_queue_get_seqnum_is_finished(struct udev_queue *udev_queue, unsigned long long int seqnum) __attribute__ ((deprecated));
+int udev_queue_get_seqnum_sequence_is_finished(struct udev_queue *udev_queue,
+                                               unsigned long long int start, unsigned long long int end) __attribute__ ((deprecated));
+int udev_queue_get_fd(struct udev_queue *udev_queue);
+int udev_queue_flush(struct udev_queue *udev_queue);
+struct udev_list_entry *udev_queue_get_queued_list_entry(struct udev_queue *udev_queue) __attribute__ ((deprecated));
+
+/*
+ *  udev_hwdb
+ *
+ *  access to the static hardware properties database
+ */
+struct udev_hwdb;
+struct udev_hwdb *udev_hwdb_new(struct udev *udev);
+struct udev_hwdb *udev_hwdb_ref(struct udev_hwdb *hwdb);
+struct udev_hwdb *udev_hwdb_unref(struct udev_hwdb *hwdb);
+struct udev_list_entry *udev_hwdb_get_properties_list_entry(struct udev_hwdb *hwdb, const char *modalias, unsigned int flags);
+
+/*
+ * udev_util
+ *
+ * udev specific utilities
+ */
+int udev_util_encode_string(const char *str, char *str_enc, size_t len);
+
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif
diff --git a/external/lib/libevdev.so b/external/lib/libevdev.so
new file mode 100644
index 0000000..eb9379e
Binary files /dev/null and b/external/lib/libevdev.so differ
diff --git a/external/lib/libevdev.so.2.1.18 b/external/lib/libevdev.so.2.1.18
new file mode 100644
index 0000000..eb9379e
Binary files /dev/null and b/external/lib/libevdev.so.2.1.18 differ
diff --git a/external/lib/libinput.so b/external/lib/libinput.so
new file mode 100755
index 0000000..63a57dd
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diff --git a/external/lib/libinput.so.10.13.0 b/external/lib/libinput.so.10.13.0
new file mode 100755
index 0000000..63a57dd
Binary files /dev/null and b/external/lib/libinput.so.10.13.0 differ
diff --git a/external/lib/libmtdev.so b/external/lib/libmtdev.so
new file mode 100644
index 0000000..ebb0727
Binary files /dev/null and b/external/lib/libmtdev.so differ
diff --git a/external/lib/libmtdev.so.1.0.0 b/external/lib/libmtdev.so.1.0.0
new file mode 100644
index 0000000..ebb0727
Binary files /dev/null and b/external/lib/libmtdev.so.1.0.0 differ
diff --git a/external/lib/libudev.so b/external/lib/libudev.so
new file mode 100644
index 0000000..4c13d4b
Binary files /dev/null and b/external/lib/libudev.so differ
diff --git a/external/lib/libudev.so.1.6.5 b/external/lib/libudev.so.1.6.5
new file mode 100644
index 0000000..4c13d4b
Binary files /dev/null and b/external/lib/libudev.so.1.6.5 differ
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 6af9cfe..505f9fa 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -15,4 +15,5 @@ add_subdirectory(mipmapping)
 add_subdirectory(CPAtest)
 add_subdirectory(cubemapping)
 add_subdirectory(attribTest)
-add_subdirectory(clearTest)
\ No newline at end of file
+add_subdirectory(clearTest)
+add_subdirectory(inputTest)
\ No newline at end of file
diff --git a/test/inputTest/CMakeLists.txt b/test/inputTest/CMakeLists.txt
new file mode 100644
index 0000000..3a9c019
--- /dev/null
+++ b/test/inputTest/CMakeLists.txt
@@ -0,0 +1,10 @@
+file(GLOB testSrc
+	"*.h"
+	"*.cpp"
+)
+
+add_executable(inputTest ${testSrc})
+target_compile_options(inputTest PRIVATE -Wall -std=c++11)
+
+target_link_libraries(inputTest mtdev evdev udev input)
+
diff --git a/test/inputTest/inputTest.cpp b/test/inputTest/inputTest.cpp
new file mode 100644
index 0000000..74ce65f
--- /dev/null
+++ b/test/inputTest/inputTest.cpp
@@ -0,0 +1,68 @@
+#include <iostream>
+#include <vector>
+#include <algorithm>
+#include <string.h>
+
+#include <fcntl.h>
+#include <unistd.h>
+#include <libinput.h>
+#include <libudev.h>
+
+static int open_restricted(const char *path, int flags, void *user_data)
+{
+		int fd = open(path, flags);
+		return fd < 0 ? -errno : fd;
+}
+
+static void close_restricted(int fd, void *user_data)
+{
+		close(fd);
+}
+
+const static struct libinput_interface interface = {
+		.open_restricted = open_restricted,
+		.close_restricted = close_restricted,
+};
+
+
+int main(void) {
+		struct libinput *li;
+		struct libinput_event *event;
+		struct udev* udev;
+
+		udev = udev_new();
+		li = libinput_udev_create_context(&interface, NULL, udev);
+		libinput_udev_assign_seat(li, "seat0");
+		libinput_dispatch(li);
+
+		while (true)
+		{
+			event = libinput_get_event(li);
+
+			if(event)
+			{
+				uint32_t type = libinput_event_get_type(event);
+				struct libinput_device* dev = libinput_event_get_device(event);
+
+				// handle the event here
+				std::cout << "Event type: " << type << std::endl;
+
+				switch(type)
+				{
+				case LIBINPUT_EVENT_DEVICE_ADDED:
+				{
+					std::cout << "Device name: " << libinput_device_get_name(dev) << std::endl;
+					break;
+				}
+				};
+
+
+				libinput_event_destroy(event);
+				libinput_dispatch(li);
+			}
+		}
+
+		libinput_unref(li);
+
+		return 0;
+}