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 #define MAX_SLOTS 16
  35
  36 enum evdev_event_type {
  37         EVDEV_NONE,
  38         EVDEV_ABSOLUTE_TOUCH_DOWN,
  39         EVDEV_ABSOLUTE_MOTION,
  40         EVDEV_ABSOLUTE_TOUCH_UP,
  41         EVDEV_ABSOLUTE_MT_DOWN,
  42         EVDEV_ABSOLUTE_MT_MOTION,
  43         EVDEV_ABSOLUTE_MT_UP,
  44         EVDEV_RELATIVE_MOTION,
  45 };
  46
  47 enum evdev_device_seat_capability {
  48         EVDEV_DEVICE_POINTER = (1 << 0),
  49         EVDEV_DEVICE_KEYBOARD = (1 << 1),
  50         EVDEV_DEVICE_TOUCH = (1 << 2)
  51 };
  52
  53 struct evdev_device {
  54         struct libinput_device base;
  55
  56         struct libinput_source *source;
  57
  58         struct evdev_dispatch *dispatch;
  59         struct libevdev *evdev;
  60         char *output_name;
  61         char *devnode;
  62         char *sysname;
  63         const char *devname;
  64         int fd;
  65         struct {
  66                 int min_x, max_x, min_y, max_y;
  67                 int32_t x, y;
  68
  69                 int32_t seat_slot;
  70
  71                 int apply_calibration;
  72                 float calibration[6];
  73         } abs;
  74
  75         struct {
  76                 int slot;
  77                 struct {
  78                         int32_t seat_slot;
  79                         int32_t x, y;
  80                 } slots[MAX_SLOTS];
  81         } mt;
  82         struct mtdev *mtdev;
  83
  84         struct {
  85                 li_fixed_t dx, dy;
  86         } rel;
  87
  88         enum evdev_event_type pending_event;
  89         enum evdev_device_seat_capability seat_caps;
  90
  91         int is_mt;
  92 };
  93
  94 #define EVDEV_UNHANDLED_DEVICE ((struct evdev_device *) 1)
  95
  96 struct evdev_dispatch;
  97
  98 struct evdev_dispatch_interface {
  99         /* Process an evdev input event. */
 100         void (*process)(struct evdev_dispatch *dispatch,
 101                         struct evdev_device *device,
 102                         struct input_event *event,
 103                         uint32_t time);
 104
 105         /* Destroy an event dispatch handler and free all its resources. */
 106         void (*destroy)(struct evdev_dispatch *dispatch);
 107 };
 108
 109 struct evdev_dispatch {
 110         struct evdev_dispatch_interface *interface;
 111 };
 112
 113 struct evdev_device *
 114 evdev_device_create(struct libinput_seat *seat,
 115                     const char *devnode,
 116                     const char *sysname);
 117
 118 struct evdev_dispatch *
 119 evdev_touchpad_create(struct evdev_device *device);
 120
 121 void
 122 evdev_device_proces_event(struct libinput_event *event);
 123
 124 void
 125 evdev_device_led_update(struct evdev_device *device, enum libinput_led leds);
 126
 127 int
 128 evdev_device_get_keys(struct evdev_device *device, char *keys, size_t size);
 129
 130 const char *
 131 evdev_device_get_output(struct evdev_device *device);
 132
 133 const char *
 134 evdev_device_get_sysname(struct evdev_device *device);
 135
 136 void
 137 evdev_device_calibrate(struct evdev_device *device, float calibration[6]);
 138
 139 int
 140 evdev_device_has_capability(struct evdev_device *device,
 141                             enum libinput_device_capability capability);
 142
 143 li_fixed_t
 144 evdev_device_transform_x(struct evdev_device *device,
 145                          li_fixed_t x,
 146                          uint32_t width);
 147
 148 li_fixed_t
 149 evdev_device_transform_y(struct evdev_device *device,
 150                          li_fixed_t y,
 151                          uint32_t height);
 152
 153 void
 154 evdev_device_remove(struct evdev_device *device);
 155
 156 void
 157 evdev_device_destroy(struct evdev_device *device);
 158
 159 #endif /* EVDEV_H */