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/*
* Copyright © 2010 Intel Corporation
*
* Permission to use, copy, modify, distribute, and sell this software and
* its documentation for any purpose is hereby granted without fee, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of the copyright holders not be used in
* advertising or publicity pertaining to distribution of the software
* without specific, written prior permission. The copyright holders make
* no representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <linux/input.h>
#include <unistd.h>
#include <fcntl.h>
#include "compositor.h"
struct evdev_input {
struct wlsc_input_device base;
};
struct evdev_input_device {
struct evdev_input *master;
struct wl_event_source *source;
int tool, new_x, new_y;
int base_x, base_y;
int fd;
int min_x, max_x, min_y, max_y;
};
static void evdev_input_device_data(int fd, uint32_t mask, void *data)
{
struct wlsc_compositor *ec;
struct evdev_input_device *device = data;
struct input_event ev[8], *e, *end;
int len, value, dx, dy, absolute_event;
int x, y;
uint32_t time;
/* FIXME: Obviously we need to not hardcode these here, but
* instead get the values from the output it's associated with. */
const int screen_width = 1024, screen_height = 600;
ec = (struct wlsc_compositor *)
device->master->base.input_device.compositor;
if (!ec->focus)
return;
dx = 0;
dy = 0;
absolute_event = 0;
x = device->master->base.input_device.x;
y = device->master->base.input_device.y;
len = read(fd, &ev, sizeof ev);
if (len < 0 || len % sizeof e[0] != 0) {
/* FIXME: handle error... reopen device? */;
return;
}
e = ev;
end = (void *) ev + len;
for (e = ev; e < end; e++) {
/* Get the signed value, earlier kernels had this as unsigned */
value = e->value;
time = e->time.tv_sec * 1000 + e->time.tv_usec / 1000;
switch (e->type) {
case EV_REL:
switch (e->code) {
case REL_X:
dx += value;
break;
case REL_Y:
dy += value;
break;
}
break;
case EV_ABS:
switch (e->code) {
case ABS_X:
absolute_event = device->tool;
x = (value - device->min_x) * screen_width /
(device->max_x - device->min_x);
break;
case ABS_Y:
absolute_event = device->tool;
y = (value - device->min_y) * screen_height /
(device->max_y - device->min_y);
break;
}
break;
case EV_KEY:
if (value == 2)
break;
switch (e->code) {
case BTN_TOUCH:
case BTN_TOOL_PEN:
case BTN_TOOL_RUBBER:
case BTN_TOOL_BRUSH:
case BTN_TOOL_PENCIL:
case BTN_TOOL_AIRBRUSH:
case BTN_TOOL_FINGER:
case BTN_TOOL_MOUSE:
case BTN_TOOL_LENS:
device->tool = value ? e->code : 0;
break;
case BTN_LEFT:
case BTN_RIGHT:
case BTN_MIDDLE:
case BTN_SIDE:
case BTN_EXTRA:
case BTN_FORWARD:
case BTN_BACK:
case BTN_TASK:
notify_button(&device->master->base.input_device,
time, e->code, value);
break;
default:
notify_key(&device->master->base.input_device,
time, e->code, value);
break;
}
}
}
if (dx != 0 || dy != 0)
notify_motion(&device->master->base.input_device,
time, x + dx, y + dy);
if (absolute_event)
notify_motion(&device->master->base.input_device, time, x, y);
}
#define TEST_BIT(b, i) (b[(i) / 32] & (1 << (i & 31)))
static struct evdev_input_device *
evdev_input_device_create(struct evdev_input *master,
struct wl_display *display, const char *path)
{
struct evdev_input_device *device;
struct wl_event_loop *loop;
struct input_absinfo absinfo;
uint32_t ev_bits[EV_MAX];
uint32_t key_bits[KEY_MAX];
device = malloc(sizeof *device);
if (device == NULL)
return NULL;
device->tool = 1;
device->new_x = 1;
device->new_y = 1;
device->master = master;
device->fd = open(path, O_RDONLY);
if (device->fd < 0) {
free(device);
fprintf(stderr, "couldn't create pointer for %s: %m\n", path);
return NULL;
}
ioctl(device->fd, EVIOCGBIT(0, EV_MAX), ev_bits);
if (TEST_BIT(ev_bits, EV_ABS)) {
ioctl(device->fd, EVIOCGBIT(EV_ABS, EV_MAX), key_bits);
if (TEST_BIT(key_bits, ABS_X)) {
ioctl(device->fd, EVIOCGABS(ABS_X), &absinfo);
device->min_x = absinfo.minimum;
device->max_x = absinfo.maximum;
}
if (TEST_BIT(key_bits, ABS_Y)) {
ioctl(device->fd, EVIOCGABS(ABS_Y), &absinfo);
device->min_y = absinfo.minimum;
device->max_y = absinfo.maximum;
}
}
loop = wl_display_get_event_loop(display);
device->source = wl_event_loop_add_fd(loop, device->fd,
WL_EVENT_READABLE,
evdev_input_device_data, device);
if (device->source == NULL) {
close(device->fd);
free(device);
return NULL;
}
return device;
}
void
evdev_input_add_devices(struct wlsc_compositor *c, struct udev *udev)
{
struct evdev_input *input;
struct udev_enumerate *e;
struct udev_list_entry *entry;
struct udev_device *device;
const char *path;
input = malloc(sizeof *input);
if (input == NULL)
return;
memset(input, 0, sizeof *input);
wlsc_input_device_init(&input->base, c);
e = udev_enumerate_new(udev);
udev_enumerate_add_match_subsystem(e, "input");
udev_enumerate_add_match_property(e, "WAYLAND_SEAT", "1");
udev_enumerate_scan_devices(e);
udev_list_entry_foreach(entry, udev_enumerate_get_list_entry(e)) {
path = udev_list_entry_get_name(entry);
device = udev_device_new_from_syspath(udev, path);
evdev_input_device_create(input, c->wl_display,
udev_device_get_devnode(device));
}
udev_enumerate_unref(e);
c->input_device = &input->base.input_device;
}
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