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         char *syspath;
  67         const char *devname;
  68         int fd;
  69         struct {
  70                 const struct input_absinfo *absinfo_x, *absinfo_y;
  71                 int fake_resolution;
  72
  73                 int32_t x, y;
  74                 int32_t seat_slot;
  75
  76                 int apply_calibration;
  77                 struct matrix calibration;
  78                 struct matrix default_calibration; /* from LIBINPUT_CALIBRATION_MATRIX */
  79                 struct matrix usermatrix; /* as supplied by the caller */
  80         } abs;
  81
  82         struct {
  83                 int slot;
  84                 struct mt_slot *slots;
  85                 size_t slots_len;
  86         } mt;
  87         struct mtdev *mtdev;
  88
  89         struct {
  90                 int dx, dy;
  91         } rel;
  92
  93         enum evdev_event_type pending_event;
  94         enum evdev_device_seat_capability seat_caps;
  95
  96         int is_mt;
  97
  98         struct {
  99                 struct motion_filter *filter;
 100         } pointer;
 101
 102         /* Bitmask of pressed keys used to ignore initial release events from
 103          * the kernel. */
 104         unsigned long hw_key_mask[NLONGS(KEY_CNT)];
 105         /* Key counter used for multiplexing button events internally in
 106          * libinput. */
 107         uint8_t key_count[KEY_CNT];
 108 };
 109
 110 #define EVDEV_UNHANDLED_DEVICE ((struct evdev_device *) 1)
 111
 112 struct evdev_dispatch;
 113
 114 struct evdev_dispatch_interface {
 115         /* Process an evdev input event. */
 116         void (*process)(struct evdev_dispatch *dispatch,
 117                         struct evdev_device *device,
 118                         struct input_event *event,
 119                         uint64_t time);
 120
 121         /* Destroy an event dispatch handler and free all its resources. */
 122         void (*destroy)(struct evdev_dispatch *dispatch);
 123 };
 124
 125 struct evdev_dispatch {
 126         struct evdev_dispatch_interface *interface;
 127         struct libinput_device_config_calibration calibration;
 128
 129         struct {
 130                 struct libinput_device_config_send_events config;
 131                 enum libinput_config_send_events_mode current_mode;
 132         } sendevents;
 133 };
 134
 135 struct evdev_device *
 136 evdev_device_create(struct libinput_seat *seat,
 137                     const char *devnode,
 138                     const char *sysname,
 139                     const char *syspath);
 140
 141 struct evdev_dispatch *
 142 evdev_touchpad_create(struct evdev_device *device);
 143
 144 struct evdev_dispatch *
 145 evdev_mt_touchpad_create(struct evdev_device *device);
 146
 147 void
 148 evdev_device_proces_event(struct libinput_event *event);
 149
 150 void
 151 evdev_device_led_update(struct evdev_device *device, enum libinput_led leds);
 152
 153 int
 154 evdev_device_get_keys(struct evdev_device *device, char *keys, size_t size);
 155
 156 const char *
 157 evdev_device_get_output(struct evdev_device *device);
 158
 159 const char *
 160 evdev_device_get_sysname(struct evdev_device *device);
 161
 162 const char *
 163 evdev_device_get_name(struct evdev_device *device);
 164
 165 unsigned int
 166 evdev_device_get_id_product(struct evdev_device *device);
 167
 168 unsigned int
 169 evdev_device_get_id_vendor(struct evdev_device *device);
 170
 171 void
 172 evdev_device_set_default_calibration(struct evdev_device *device,
 173                                      const float calibration[6]);
 174 void
 175 evdev_device_calibrate(struct evdev_device *device,
 176                        const float calibration[6]);
 177
 178 int
 179 evdev_device_has_capability(struct evdev_device *device,
 180                             enum libinput_device_capability capability);
 181
 182 int
 183 evdev_device_get_size(struct evdev_device *device,
 184                       double *w,
 185                       double *h);
 186
 187 double
 188 evdev_device_transform_x(struct evdev_device *device,
 189                          double x,
 190                          uint32_t width);
 191
 192 double
 193 evdev_device_transform_y(struct evdev_device *device,
 194                          double y,
 195                          uint32_t height);
 196 int
 197 evdev_device_suspend(struct evdev_device *device);
 198
 199 int
 200 evdev_device_resume(struct evdev_device *device);
 201
 202 void
 203 evdev_keyboard_notify_key(struct evdev_device *device,
 204                           uint32_t time,
 205                           int key,
 206                           enum libinput_key_state state);
 207
 208 void
 209 evdev_pointer_notify_button(struct evdev_device *device,
 210                             uint32_t time,
 211                             int button,
 212                             enum libinput_button_state state);
 213
 214 void
 215 evdev_device_remove(struct evdev_device *device);
 216
 217 void
 218 evdev_device_destroy(struct evdev_device *device);
 219
 220 static inline double
 221 evdev_convert_to_mm(const struct input_absinfo *absinfo, double v)
 222 {
 223         double value = v - absinfo->minimum;
 224         return value/absinfo->resolution;
 225 }
 226
 227 #endif /* EVDEV_H */