src/evdev.h

   1 /*
   2  * Copyright © 2011, 2012 Intel Corporation
   3  * Copyright © 2013 Jonas Ådahl
   4  *
   5  * Permission to use, copy, modify, distribute, and sell this software and
   6  * its documentation for any purpose is hereby granted without fee, provided
   7  * that the above copyright notice appear in all copies and that both that
   8  * copyright notice and this permission notice appear in supporting
   9  * documentation, and that the name of the copyright holders not be used in
  10  * advertising or publicity pertaining to distribution of the software
  11  * without specific, written prior permission.  The copyright holders make
  12  * no representations about the suitability of this software for any
  13  * purpose.  It is provided "as is" without express or implied warranty.
  14  *
  15  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
  16  * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
  17  * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
  18  * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
  19  * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
  20  * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  21  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  22  */
  23
  24 #ifndef EVDEV_H
  25 #define EVDEV_H
  26
  27 #include "config.h"
  28
  29 #include <linux/input.h>
  30 #include <libevdev/libevdev.h>
  31
  32 #include "libinput-private.h"
  33
  34 enum evdev_event_type {
  35         EVDEV_NONE,
  36         EVDEV_ABSOLUTE_TOUCH_DOWN,
  37         EVDEV_ABSOLUTE_MOTION,
  38         EVDEV_ABSOLUTE_TOUCH_UP,
  39         EVDEV_ABSOLUTE_MT_DOWN,
  40         EVDEV_ABSOLUTE_MT_MOTION,
  41         EVDEV_ABSOLUTE_MT_UP,
  42         EVDEV_RELATIVE_MOTION,
  43 };
  44
  45 enum evdev_device_seat_capability {
  46         EVDEV_DEVICE_POINTER = (1 << 0),
  47         EVDEV_DEVICE_KEYBOARD = (1 << 1),
  48         EVDEV_DEVICE_TOUCH = (1 << 2)
  49 };
  50
  51 struct mt_slot {
  52         int32_t seat_slot;
  53         int32_t x, y;
  54 };
  55
  56 struct evdev_device {
  57         struct libinput_device base;
  58
  59         struct libinput_source *source;
  60
  61         struct evdev_dispatch *dispatch;
  62         struct libevdev *evdev;
  63         char *output_name;
  64         char *devnode;
  65         char *sysname;
  66         const char *devname;
  67         int fd;
  68         struct {
  69                 int min_x, max_x, min_y, max_y;
  70                 int32_t x, y;
  71
  72                 int32_t seat_slot;
  73
  74                 int apply_calibration;
  75                 float calibration[6];
  76         } abs;
  77
  78         struct {
  79                 int slot;
  80                 struct mt_slot *slots;
  81                 size_t slots_len;
  82         } mt;
  83         struct mtdev *mtdev;
  84
  85         struct {
  86                 li_fixed_t dx, dy;
  87         } rel;
  88
  89         enum evdev_event_type pending_event;
  90         enum evdev_device_seat_capability seat_caps;
  91
  92         int is_mt;
  93 };
  94
  95 #define EVDEV_UNHANDLED_DEVICE ((struct evdev_device *) 1)
  96
  97 struct evdev_dispatch;
  98
  99 struct evdev_dispatch_interface {
 100         /* Process an evdev input event. */
 101         void (*process)(struct evdev_dispatch *dispatch,
 102                         struct evdev_device *device,
 103                         struct input_event *event,
 104                         uint32_t time);
 105
 106         /* Destroy an event dispatch handler and free all its resources. */
 107         void (*destroy)(struct evdev_dispatch *dispatch);
 108 };
 109
 110 struct evdev_dispatch {
 111         struct evdev_dispatch_interface *interface;
 112 };
 113
 114 struct evdev_device *
 115 evdev_device_create(struct libinput_seat *seat,
 116                     const char *devnode,
 117                     const char *sysname);
 118
 119 struct evdev_dispatch *
 120 evdev_touchpad_create(struct evdev_device *device);
 121
 122 struct evdev_dispatch *
 123 evdev_mt_touchpad_create(struct evdev_device *device);
 124
 125 void
 126 evdev_device_proces_event(struct libinput_event *event);
 127
 128 void
 129 evdev_device_led_update(struct evdev_device *device, enum libinput_led leds);
 130
 131 int
 132 evdev_device_get_keys(struct evdev_device *device, char *keys, size_t size);
 133
 134 const char *
 135 evdev_device_get_output(struct evdev_device *device);
 136
 137 const char *
 138 evdev_device_get_sysname(struct evdev_device *device);
 139
 140 void
 141 evdev_device_calibrate(struct evdev_device *device, float calibration[6]);
 142
 143 int
 144 evdev_device_has_capability(struct evdev_device *device,
 145                             enum libinput_device_capability capability);
 146
 147 li_fixed_t
 148 evdev_device_transform_x(struct evdev_device *device,
 149                          li_fixed_t x,
 150                          uint32_t width);
 151
 152 li_fixed_t
 153 evdev_device_transform_y(struct evdev_device *device,
 154                          li_fixed_t y,
 155                          uint32_t height);
 156
 157 void
 158 evdev_device_remove(struct evdev_device *device);
 159
 160 void
 161 evdev_device_destroy(struct evdev_device *device);
 162
 163 #endif /* EVDEV_H */