Kristian Høgsberg | 43db401 | 2011-01-14 14:45:42 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Copyright © 2010 Intel Corporation |
| 3 | * |
| 4 | * Permission to use, copy, modify, distribute, and sell this software and |
| 5 | * its documentation for any purpose is hereby granted without fee, provided |
| 6 | * that the above copyright notice appear in all copies and that both that |
| 7 | * copyright notice and this permission notice appear in supporting |
| 8 | * documentation, and that the name of the copyright holders not be used in |
| 9 | * advertising or publicity pertaining to distribution of the software |
| 10 | * without specific, written prior permission. The copyright holders make |
| 11 | * no representations about the suitability of this software for any |
| 12 | * purpose. It is provided "as is" without express or implied warranty. |
| 13 | * |
| 14 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS |
| 15 | * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND |
| 16 | * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY |
| 17 | * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER |
| 18 | * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF |
| 19 | * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
| 20 | * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 21 | */ |
| 22 | |
| 23 | #include <stdio.h> |
| 24 | #include <stdlib.h> |
| 25 | #include <string.h> |
| 26 | #include <linux/input.h> |
| 27 | #include <unistd.h> |
| 28 | #include <fcntl.h> |
| 29 | |
| 30 | #include "compositor.h" |
| 31 | |
| 32 | struct evdev_input { |
| 33 | struct wlsc_input_device base; |
| 34 | }; |
| 35 | |
| 36 | struct evdev_input_device { |
| 37 | struct evdev_input *master; |
| 38 | struct wl_event_source *source; |
| 39 | int tool, new_x, new_y; |
| 40 | int base_x, base_y; |
| 41 | int fd; |
Kristian Høgsberg | 96c8be9 | 2011-01-14 14:49:46 -0500 | [diff] [blame] | 42 | int min_x, max_x, min_y, max_y; |
Kristian Høgsberg | 43db401 | 2011-01-14 14:45:42 -0500 | [diff] [blame] | 43 | }; |
| 44 | |
| 45 | static void evdev_input_device_data(int fd, uint32_t mask, void *data) |
| 46 | { |
| 47 | struct wlsc_compositor *ec; |
| 48 | struct evdev_input_device *device = data; |
| 49 | struct input_event ev[8], *e, *end; |
| 50 | int len, value, dx, dy, absolute_event; |
| 51 | int x, y; |
| 52 | uint32_t time; |
| 53 | |
Kristian Høgsberg | 96c8be9 | 2011-01-14 14:49:46 -0500 | [diff] [blame] | 54 | /* FIXME: Obviously we need to not hardcode these here, but |
| 55 | * instead get the values from the output it's associated with. */ |
| 56 | const int screen_width = 1024, screen_height = 600; |
| 57 | |
Kristian Høgsberg | 43db401 | 2011-01-14 14:45:42 -0500 | [diff] [blame] | 58 | ec = (struct wlsc_compositor *) |
| 59 | device->master->base.input_device.compositor; |
| 60 | if (!ec->focus) |
| 61 | return; |
| 62 | |
| 63 | dx = 0; |
| 64 | dy = 0; |
| 65 | absolute_event = 0; |
| 66 | x = device->master->base.input_device.x; |
| 67 | y = device->master->base.input_device.y; |
| 68 | |
| 69 | len = read(fd, &ev, sizeof ev); |
| 70 | if (len < 0 || len % sizeof e[0] != 0) { |
| 71 | /* FIXME: handle error... reopen device? */; |
| 72 | return; |
| 73 | } |
| 74 | |
| 75 | e = ev; |
| 76 | end = (void *) ev + len; |
| 77 | for (e = ev; e < end; e++) { |
| 78 | /* Get the signed value, earlier kernels had this as unsigned */ |
| 79 | value = e->value; |
| 80 | time = e->time.tv_sec * 1000 + e->time.tv_usec / 1000; |
| 81 | |
| 82 | switch (e->type) { |
| 83 | case EV_REL: |
| 84 | switch (e->code) { |
| 85 | case REL_X: |
| 86 | dx += value; |
| 87 | break; |
| 88 | |
| 89 | case REL_Y: |
| 90 | dy += value; |
| 91 | break; |
| 92 | } |
| 93 | break; |
| 94 | |
| 95 | case EV_ABS: |
Kristian Høgsberg | 43db401 | 2011-01-14 14:45:42 -0500 | [diff] [blame] | 96 | switch (e->code) { |
| 97 | case ABS_X: |
Kristian Høgsberg | 96c8be9 | 2011-01-14 14:49:46 -0500 | [diff] [blame] | 98 | absolute_event = device->tool; |
| 99 | x = (value - device->min_x) * screen_width / |
| 100 | (device->max_x - device->min_x); |
Kristian Høgsberg | 43db401 | 2011-01-14 14:45:42 -0500 | [diff] [blame] | 101 | break; |
| 102 | case ABS_Y: |
Kristian Høgsberg | 96c8be9 | 2011-01-14 14:49:46 -0500 | [diff] [blame] | 103 | absolute_event = device->tool; |
| 104 | y = (value - device->min_y) * screen_height / |
| 105 | (device->max_y - device->min_y); |
Kristian Høgsberg | 43db401 | 2011-01-14 14:45:42 -0500 | [diff] [blame] | 106 | break; |
| 107 | } |
| 108 | break; |
| 109 | |
| 110 | case EV_KEY: |
| 111 | if (value == 2) |
| 112 | break; |
| 113 | |
| 114 | switch (e->code) { |
| 115 | case BTN_TOUCH: |
| 116 | case BTN_TOOL_PEN: |
| 117 | case BTN_TOOL_RUBBER: |
| 118 | case BTN_TOOL_BRUSH: |
| 119 | case BTN_TOOL_PENCIL: |
| 120 | case BTN_TOOL_AIRBRUSH: |
| 121 | case BTN_TOOL_FINGER: |
| 122 | case BTN_TOOL_MOUSE: |
| 123 | case BTN_TOOL_LENS: |
Kristian Høgsberg | 43db401 | 2011-01-14 14:45:42 -0500 | [diff] [blame] | 124 | device->tool = value ? e->code : 0; |
| 125 | break; |
| 126 | |
| 127 | case BTN_LEFT: |
| 128 | case BTN_RIGHT: |
| 129 | case BTN_MIDDLE: |
| 130 | case BTN_SIDE: |
| 131 | case BTN_EXTRA: |
| 132 | case BTN_FORWARD: |
| 133 | case BTN_BACK: |
| 134 | case BTN_TASK: |
| 135 | notify_button(&device->master->base.input_device, |
| 136 | time, e->code, value); |
| 137 | break; |
| 138 | |
| 139 | default: |
| 140 | notify_key(&device->master->base.input_device, |
| 141 | time, e->code, value); |
| 142 | break; |
| 143 | } |
| 144 | } |
| 145 | } |
| 146 | |
| 147 | if (dx != 0 || dy != 0) |
| 148 | notify_motion(&device->master->base.input_device, |
| 149 | time, x + dx, y + dy); |
Kristian Høgsberg | 96c8be9 | 2011-01-14 14:49:46 -0500 | [diff] [blame] | 150 | if (absolute_event) |
Kristian Høgsberg | 43db401 | 2011-01-14 14:45:42 -0500 | [diff] [blame] | 151 | notify_motion(&device->master->base.input_device, time, x, y); |
| 152 | } |
| 153 | |
Kristian Høgsberg | 96c8be9 | 2011-01-14 14:49:46 -0500 | [diff] [blame] | 154 | #define TEST_BIT(b, i) (b[(i) / 32] & (1 << (i & 31))) |
| 155 | |
Kristian Høgsberg | 43db401 | 2011-01-14 14:45:42 -0500 | [diff] [blame] | 156 | static struct evdev_input_device * |
| 157 | evdev_input_device_create(struct evdev_input *master, |
| 158 | struct wl_display *display, const char *path) |
| 159 | { |
| 160 | struct evdev_input_device *device; |
| 161 | struct wl_event_loop *loop; |
Kristian Høgsberg | 96c8be9 | 2011-01-14 14:49:46 -0500 | [diff] [blame] | 162 | struct input_absinfo absinfo; |
| 163 | uint32_t ev_bits[EV_MAX]; |
| 164 | uint32_t key_bits[KEY_MAX]; |
Kristian Høgsberg | 43db401 | 2011-01-14 14:45:42 -0500 | [diff] [blame] | 165 | |
| 166 | device = malloc(sizeof *device); |
| 167 | if (device == NULL) |
| 168 | return NULL; |
| 169 | |
| 170 | device->tool = 1; |
| 171 | device->new_x = 1; |
| 172 | device->new_y = 1; |
| 173 | device->master = master; |
| 174 | |
| 175 | device->fd = open(path, O_RDONLY); |
| 176 | if (device->fd < 0) { |
| 177 | free(device); |
| 178 | fprintf(stderr, "couldn't create pointer for %s: %m\n", path); |
| 179 | return NULL; |
| 180 | } |
| 181 | |
Kristian Høgsberg | 96c8be9 | 2011-01-14 14:49:46 -0500 | [diff] [blame] | 182 | ioctl(device->fd, EVIOCGBIT(0, EV_MAX), ev_bits); |
| 183 | if (TEST_BIT(ev_bits, EV_ABS)) { |
| 184 | ioctl(device->fd, EVIOCGBIT(EV_ABS, EV_MAX), key_bits); |
| 185 | if (TEST_BIT(key_bits, ABS_X)) { |
| 186 | ioctl(device->fd, EVIOCGABS(ABS_X), &absinfo); |
| 187 | device->min_x = absinfo.minimum; |
| 188 | device->max_x = absinfo.maximum; |
| 189 | } |
| 190 | if (TEST_BIT(key_bits, ABS_Y)) { |
| 191 | ioctl(device->fd, EVIOCGABS(ABS_Y), &absinfo); |
| 192 | device->min_y = absinfo.minimum; |
| 193 | device->max_y = absinfo.maximum; |
| 194 | } |
| 195 | } |
| 196 | |
Kristian Høgsberg | 43db401 | 2011-01-14 14:45:42 -0500 | [diff] [blame] | 197 | loop = wl_display_get_event_loop(display); |
| 198 | device->source = wl_event_loop_add_fd(loop, device->fd, |
| 199 | WL_EVENT_READABLE, |
| 200 | evdev_input_device_data, device); |
| 201 | if (device->source == NULL) { |
| 202 | close(device->fd); |
| 203 | free(device); |
| 204 | return NULL; |
| 205 | } |
| 206 | |
| 207 | return device; |
| 208 | } |
| 209 | |
| 210 | void |
| 211 | evdev_input_add_devices(struct wlsc_compositor *c, struct udev *udev) |
| 212 | { |
| 213 | struct evdev_input *input; |
| 214 | struct udev_enumerate *e; |
| 215 | struct udev_list_entry *entry; |
| 216 | struct udev_device *device; |
| 217 | const char *path; |
| 218 | |
| 219 | input = malloc(sizeof *input); |
| 220 | if (input == NULL) |
| 221 | return; |
| 222 | |
| 223 | memset(input, 0, sizeof *input); |
| 224 | wlsc_input_device_init(&input->base, c); |
| 225 | |
| 226 | e = udev_enumerate_new(udev); |
| 227 | udev_enumerate_add_match_subsystem(e, "input"); |
| 228 | udev_enumerate_add_match_property(e, "WAYLAND_SEAT", "1"); |
| 229 | udev_enumerate_scan_devices(e); |
| 230 | udev_list_entry_foreach(entry, udev_enumerate_get_list_entry(e)) { |
| 231 | path = udev_list_entry_get_name(entry); |
| 232 | device = udev_device_new_from_syspath(udev, path); |
| 233 | evdev_input_device_create(input, c->wl_display, |
| 234 | udev_device_get_devnode(device)); |
| 235 | } |
| 236 | udev_enumerate_unref(e); |
| 237 | |
| 238 | c->input_device = &input->base.input_device; |
| 239 | } |