Kristian Høgsberg
14 years ago
parent
ed64311b6c
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43db4015f9
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/*
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* Copyright © 2010 Intel Corporation |
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* |
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* Permission to use, copy, modify, distribute, and sell this software and |
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* its documentation for any purpose is hereby granted without fee, provided |
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* that the above copyright notice appear in all copies and that both that |
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* copyright notice and this permission notice appear in supporting |
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* documentation, and that the name of the copyright holders not be used in |
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* advertising or publicity pertaining to distribution of the software |
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* without specific, written prior permission. The copyright holders make |
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* no representations about the suitability of this software for any |
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* purpose. It is provided "as is" without express or implied warranty. |
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* |
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS |
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* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND |
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* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY |
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* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER |
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* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF |
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* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <linux/input.h> |
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#include <unistd.h> |
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#include <fcntl.h> |
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#include "compositor.h" |
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struct evdev_input { |
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struct wlsc_input_device base; |
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}; |
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struct evdev_input_device { |
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struct evdev_input *master; |
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struct wl_event_source *source; |
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int tool, new_x, new_y; |
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int base_x, base_y; |
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int fd; |
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}; |
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static void evdev_input_device_data(int fd, uint32_t mask, void *data) |
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{ |
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struct wlsc_compositor *ec; |
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struct evdev_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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int x, y; |
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uint32_t time; |
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ec = (struct wlsc_compositor *) |
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device->master->base.input_device.compositor; |
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if (!ec->focus) |
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return; |
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dx = 0; |
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dy = 0; |
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absolute_event = 0; |
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x = device->master->base.input_device.x; |
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y = device->master->base.input_device.y; |
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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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time = e->time.tv_sec * 1000 + e->time.tv_usec / 1000; |
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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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break; |
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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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if (device->new_x) { |
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device->base_x = x - value; |
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device->new_x = 0; |
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} |
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x = device->base_x + value; |
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break; |
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case ABS_Y: |
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if (device->new_y) { |
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device->base_y = y - value; |
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device->new_y = 0; |
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} |
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y = device->base_y + value; |
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break; |
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} |
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break; |
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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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if (device->tool == 0 && value) { |
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device->new_x = 1; |
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device->new_y = 1; |
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} |
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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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case BTN_RIGHT: |
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case BTN_MIDDLE: |
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case BTN_SIDE: |
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case BTN_EXTRA: |
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case BTN_FORWARD: |
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case BTN_BACK: |
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case BTN_TASK: |
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notify_button(&device->master->base.input_device, |
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time, e->code, value); |
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break; |
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default: |
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notify_key(&device->master->base.input_device, |
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time, e->code, 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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notify_motion(&device->master->base.input_device, |
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time, x + dx, y + dy); |
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if (absolute_event && device->tool) |
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notify_motion(&device->master->base.input_device, time, x, y); |
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} |
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static struct evdev_input_device * |
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evdev_input_device_create(struct evdev_input *master, |
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struct wl_display *display, const char *path) |
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{ |
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struct evdev_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->tool = 1; |
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device->new_x = 1; |
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device->new_y = 1; |
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device->master = master; |
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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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evdev_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; |
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} |
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void |
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evdev_input_add_devices(struct wlsc_compositor *c, struct udev *udev) |
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{ |
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struct evdev_input *input; |
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struct udev_enumerate *e; |
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struct udev_list_entry *entry; |
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struct udev_device *device; |
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const char *path; |
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input = malloc(sizeof *input); |
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if (input == NULL) |
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return; |
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memset(input, 0, sizeof *input); |
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wlsc_input_device_init(&input->base, c); |
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e = udev_enumerate_new(udev); |
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udev_enumerate_add_match_subsystem(e, "input"); |
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udev_enumerate_add_match_property(e, "WAYLAND_SEAT", "1"); |
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udev_enumerate_scan_devices(e); |
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udev_list_entry_foreach(entry, udev_enumerate_get_list_entry(e)) { |
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path = udev_list_entry_get_name(entry); |
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device = udev_device_new_from_syspath(udev, path); |
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evdev_input_device_create(input, c->wl_display, |
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udev_device_get_devnode(device)); |
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} |
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udev_enumerate_unref(e); |
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c->input_device = &input->base.input_device; |
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} |
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