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         /* A new device was added */
 125         void (*device_added)(struct evdev_device *device,
 126                              struct evdev_device *added_device);
 127
 128         /* A device was removed */
 129         void (*device_removed)(struct evdev_device *device,
 130                                struct evdev_device *removed_device);
 131 };
 132
 133 struct evdev_dispatch {
 134         struct evdev_dispatch_interface *interface;
 135         struct libinput_device_config_calibration calibration;
 136
 137         struct {
 138                 struct libinput_device_config_send_events config;
 139                 enum libinput_config_send_events_mode current_mode;
 140         } sendevents;
 141 };
 142
 143 struct evdev_device *
 144 evdev_device_create(struct libinput_seat *seat,
 145                     const char *devnode,
 146                     const char *sysname,
 147                     const char *syspath);
 148
 149 struct evdev_dispatch *
 150 evdev_touchpad_create(struct evdev_device *device);
 151
 152 struct evdev_dispatch *
 153 evdev_mt_touchpad_create(struct evdev_device *device);
 154
 155 void
 156 evdev_device_proces_event(struct libinput_event *event);
 157
 158 void
 159 evdev_device_led_update(struct evdev_device *device, enum libinput_led leds);
 160
 161 int
 162 evdev_device_get_keys(struct evdev_device *device, char *keys, size_t size);
 163
 164 const char *
 165 evdev_device_get_output(struct evdev_device *device);
 166
 167 const char *
 168 evdev_device_get_sysname(struct evdev_device *device);
 169
 170 const char *
 171 evdev_device_get_name(struct evdev_device *device);
 172
 173 unsigned int
 174 evdev_device_get_id_product(struct evdev_device *device);
 175
 176 unsigned int
 177 evdev_device_get_id_vendor(struct evdev_device *device);
 178
 179 void
 180 evdev_device_set_default_calibration(struct evdev_device *device,
 181                                      const float calibration[6]);
 182 void
 183 evdev_device_calibrate(struct evdev_device *device,
 184                        const float calibration[6]);
 185
 186 int
 187 evdev_device_has_capability(struct evdev_device *device,
 188                             enum libinput_device_capability capability);
 189
 190 int
 191 evdev_device_get_size(struct evdev_device *device,
 192                       double *w,
 193                       double *h);
 194
 195 double
 196 evdev_device_transform_x(struct evdev_device *device,
 197                          double x,
 198                          uint32_t width);
 199
 200 double
 201 evdev_device_transform_y(struct evdev_device *device,
 202                          double y,
 203                          uint32_t height);
 204 int
 205 evdev_device_suspend(struct evdev_device *device);
 206
 207 int
 208 evdev_device_resume(struct evdev_device *device);
 209
 210 void
 211 evdev_keyboard_notify_key(struct evdev_device *device,
 212                           uint32_t time,
 213                           int key,
 214                           enum libinput_key_state state);
 215
 216 void
 217 evdev_pointer_notify_button(struct evdev_device *device,
 218                             uint32_t time,
 219                             int button,
 220                             enum libinput_button_state state);
 221
 222 void
 223 evdev_device_remove(struct evdev_device *device);
 224
 225 void
 226 evdev_device_destroy(struct evdev_device *device);
 227
 228 static inline double
 229 evdev_convert_to_mm(const struct input_absinfo *absinfo, double v)
 230 {
 231         double value = v - absinfo->minimum;
 232         return value/absinfo->resolution;
 233 }
 234
 235 #endif /* EVDEV_H */