93331ff40a
This lets the compositor place the pointer sprite correctly when it receives pointer focus and allows it to send pointer focus to any client that might receive pointer focus as the compositor receives it.
161 lines
4.3 KiB
C
161 lines
4.3 KiB
C
/*
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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 <termios.h>
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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 <unistd.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <linux/kd.h>
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#include <linux/vt.h>
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#include <sys/ioctl.h>
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#include "compositor.h"
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struct tty {
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struct wlsc_compositor *compositor;
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int fd;
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struct termios terminal_attributes;
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struct wl_event_source *input_source;
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struct wl_event_source *enter_vt_source;
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struct wl_event_source *leave_vt_source;
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};
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static void on_enter_vt(int signal_number, void *data)
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{
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struct tty *tty = data;
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int ret;
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fprintf(stderr, "enter vt\n");
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ioctl(tty->fd, VT_RELDISP, VT_ACKACQ);
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ret = ioctl(tty->fd, KDSETMODE, KD_GRAPHICS);
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if (ret)
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fprintf(stderr, "failed to set KD_GRAPHICS mode on console: %m\n");
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}
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static void on_leave_vt(int signal_number, void *data)
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{
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struct tty *tty = data;
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int ret;
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ioctl (tty->fd, VT_RELDISP, 1);
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ret = ioctl(tty->fd, KDSETMODE, KD_TEXT);
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if (ret)
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fprintf(stderr,
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"failed to set KD_TEXT mode on console: %m\n");
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}
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static void
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on_tty_input(int fd, uint32_t mask, void *data)
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{
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struct tty *tty = data;
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/* Ignore input to tty. We get keyboard events from evdev
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*/
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tcflush(tty->fd, TCIFLUSH);
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}
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struct tty *
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tty_create(struct wlsc_compositor *compositor)
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{
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struct termios raw_attributes;
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struct vt_mode mode = { 0 };
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int ret;
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struct tty *tty;
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struct wl_event_loop *loop;
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tty = malloc(sizeof *tty);
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if (tty == NULL)
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return NULL;
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memset(tty, 0, sizeof *tty);
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tty->compositor = compositor;
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tty->fd = open("/dev/tty0", O_RDWR | O_NOCTTY);
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if (tty->fd <= 0) {
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fprintf(stderr, "failed to open active tty: %m\n");
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return NULL;
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}
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if (tcgetattr(tty->fd, &tty->terminal_attributes) < 0) {
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fprintf(stderr, "could not get terminal attributes: %m\n");
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return NULL;
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}
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/* Ignore control characters and disable echo */
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raw_attributes = tty->terminal_attributes;
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cfmakeraw(&raw_attributes);
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/* Fix up line endings to be normal (cfmakeraw hoses them) */
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raw_attributes.c_oflag |= OPOST | OCRNL;
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if (tcsetattr(tty->fd, TCSANOW, &raw_attributes) < 0)
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fprintf(stderr, "could not put terminal into raw mode: %m\n");
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loop = wl_display_get_event_loop(compositor->wl_display);
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tty->input_source =
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wl_event_loop_add_fd(loop, tty->fd,
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WL_EVENT_READABLE, on_tty_input, tty);
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ret = ioctl(tty->fd, KDSETMODE, KD_GRAPHICS);
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if (ret) {
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fprintf(stderr, "failed to set KD_GRAPHICS mode on tty: %m\n");
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return NULL;
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}
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tty->compositor->focus = 1;
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mode.mode = VT_PROCESS;
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mode.relsig = SIGUSR1;
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mode.acqsig = SIGUSR2;
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if (!ioctl(tty->fd, VT_SETMODE, &mode) < 0) {
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fprintf(stderr, "failed to take control of vt handling\n");
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return NULL;
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}
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tty->leave_vt_source =
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wl_event_loop_add_signal(loop, SIGUSR1, on_leave_vt, tty);
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tty->enter_vt_source =
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wl_event_loop_add_signal(loop, SIGUSR2, on_enter_vt, tty);
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return tty;
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}
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void
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tty_destroy(struct tty *tty)
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{
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if(!tty)
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return;
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if (ioctl(tty->fd, KDSETMODE, KD_TEXT))
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fprintf(stderr,
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"failed to set KD_TEXT mode on tty: %m\n");
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if (tcsetattr(tty->fd, TCSANOW, &tty->terminal_attributes) < 0)
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fprintf(stderr,
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"could not restore terminal to canonical mode\n");
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free(tty);
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}
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