153 lines
3.1 KiB
C
153 lines
3.1 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <linux/input.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <linux/input.h>
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#include "wayland.h"
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struct wl_input_device {
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struct wl_object base;
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struct wl_event_source *source;
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struct wl_display *display;
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int fd;
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int tool;
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int32_t x, y;
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};
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static const struct wl_method input_device_methods[] = {
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};
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static const struct wl_interface input_device_interface = {
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"input_device", 1,
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ARRAY_LENGTH(input_device_methods),
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input_device_methods,
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};
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static void wl_input_device_data(int fd, uint32_t mask, void *data)
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{
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struct wl_input_device *device = data;
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struct input_event ev[8], *e, *end;
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int len, value, dx, dy, absolute_event;
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dx = 0;
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dy = 0;
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absolute_event = 0;
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len = read(fd, &ev, sizeof ev);
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if (len < 0 || len % sizeof e[0] != 0) {
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/* FIXME: handle error... reopen device? */;
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return;
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}
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e = ev;
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end = (void *) ev + len;
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for (e = ev; e < end; e++) {
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/* Get the signed value, earlier kernels had this as unsigned */
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value = e->value;
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switch (e->type) {
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case EV_REL:
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switch (e->code) {
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case REL_X:
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dx += value;
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break;
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case REL_Y:
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dy += value;
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break;
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}
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case EV_ABS:
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absolute_event = 1;
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switch (e->code) {
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case ABS_X:
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device->x = value;
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break;
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case ABS_Y:
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device->y = value;
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break;
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}
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case EV_KEY:
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if (value == 2)
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break;
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switch (e->code) {
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case BTN_TOUCH:
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case BTN_TOOL_PEN:
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case BTN_TOOL_RUBBER:
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case BTN_TOOL_BRUSH:
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case BTN_TOOL_PENCIL:
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case BTN_TOOL_AIRBRUSH:
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case BTN_TOOL_FINGER:
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case BTN_TOOL_MOUSE:
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case BTN_TOOL_LENS:
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device->tool = value ? e->code : 0;
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break;
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case BTN_LEFT:
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wl_display_post_button_event(device->display,
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&device->base, 0, value);
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break;
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case BTN_RIGHT:
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wl_display_post_button_event(device->display,
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&device->base, 2, value);
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break;
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case BTN_MIDDLE:
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wl_display_post_button_event(device->display,
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&device->base, 1, value);
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break;
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}
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}
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}
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if (dx != 0 || dy != 0)
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wl_display_post_relative_event(device->display,
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&device->base, dx, dy);
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if (absolute_event && device->tool)
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wl_display_post_absolute_event(device->display,
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&device->base,
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device->x, device->y);
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}
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struct wl_object *
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wl_input_device_create(struct wl_display *display,
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const char *path, uint32_t id)
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{
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struct wl_input_device *device;
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struct wl_event_loop *loop;
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device = malloc(sizeof *device);
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if (device == NULL)
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return NULL;
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device->base.id = id;
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device->base.interface = &input_device_interface;
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device->display = display;
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device->tool = 1;
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device->fd = open(path, O_RDONLY);
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if (device->fd < 0) {
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free(device);
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fprintf(stderr, "couldn't create pointer for %s: %m\n", path);
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return NULL;
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}
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loop = wl_display_get_event_loop(display);
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device->source = wl_event_loop_add_fd(loop, device->fd,
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WL_EVENT_READABLE,
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wl_input_device_data, device);
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if (device->source == NULL) {
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close(device->fd);
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free(device);
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return NULL;
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}
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return &device->base;
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}
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