--- /dev/null
+#include <stdio.h>
+#include <stdlib.h>
+#include <linux/input.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include <linux/input.h>
+
+#include "wayland.h"
+
+struct wl_input_device {
+ struct wl_object base;
+ struct wl_event_source *source;
+ struct wl_display *display;
+ int fd;
+ int tool;
+ int32_t x, y;
+};
+
+static const struct wl_method input_device_methods[] = {
+};
+
+static const struct wl_interface input_device_interface = {
+ "input_device", 1,
+ ARRAY_LENGTH(input_device_methods),
+ input_device_methods,
+};
+
+static void wl_input_device_data(int fd, uint32_t mask, void *data)
+{
+ struct wl_input_device *device = data;
+ struct input_event ev[8], *e, *end;
+ int len, value, dx, dy, absolute_event;
+
+ dx = 0;
+ dy = 0;
+ absolute_event = 0;
+
+ 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;
+
+ switch (e->type) {
+ case EV_REL:
+ switch (e->code) {
+ case REL_X:
+ dx += value;
+ break;
+
+ case REL_Y:
+ dy += value;
+ break;
+ }
+
+ case EV_ABS:
+ absolute_event = 1;
+ switch (e->code) {
+ case ABS_X:
+ device->x = value;
+ break;
+ case ABS_Y:
+ device->y = value;
+ 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:
+ wl_display_post_button_event(device->display,
+ &device->base, 0, value);
+ break;
+
+ case BTN_RIGHT:
+ wl_display_post_button_event(device->display,
+ &device->base, 2, value);
+ break;
+
+ case BTN_MIDDLE:
+ wl_display_post_button_event(device->display,
+ &device->base, 1, value);
+ break;
+ }
+ }
+ }
+
+ if (dx != 0 || dy != 0)
+ wl_display_post_relative_event(device->display,
+ &device->base, dx, dy);
+ if (absolute_event && device->tool)
+ wl_display_post_absolute_event(device->display,
+ &device->base,
+ device->x, device->y);
+}
+
+struct wl_object *
+wl_input_device_create(struct wl_display *display,
+ const char *path, uint32_t id)
+{
+ struct wl_input_device *device;
+ struct wl_event_loop *loop;
+
+ device = malloc(sizeof *device);
+ if (device == NULL)
+ return NULL;
+
+ device->base.interface = &input_device_interface;
+ device->display = display;
+ device->tool = 1;
+
+ 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;
+ }
+
+ loop = wl_display_get_event_loop(display);
+ device->source = wl_event_loop_add_fd(loop, device->fd,
+ WL_EVENT_READABLE,
+ wl_input_device_data, device);
+ if (device->source == NULL) {
+ close(device->fd);
+ free(device);
+ return NULL;
+ }
+
+ return &device->base;
+}