source: mainline/uspace/srv/hid/display/seat.c@ 94635b30

/*
 * Copyright (c) 2019 Jiri Svoboda
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/** @addtogroup display
 * @{
 */
/**
 * @file Display server seat
 */

#include <adt/list.h>
#include <errno.h>
#include <stdlib.h>
#include "client.h"
#include "display.h"
#include "seat.h"
#include "window.h"

/** Create seat.
 *
 * @param display Parent display
 * @param rseat Place to store pointer to new seat.
 * @return EOK on success, ENOMEM if out of memory
 */
errno_t ds_seat_create(ds_display_t *display, ds_seat_t **rseat)
{
        ds_seat_t *seat;

        seat = calloc(1, sizeof(ds_seat_t));
        if (seat == NULL)
                return ENOMEM;

        ds_display_add_seat(display, seat);

        *rseat = seat;
        return EOK;
}

/** Destroy seat.
 *
 * @param seat Seat
 */
void ds_seat_destroy(ds_seat_t *seat)
{
        ds_display_remove_seat(seat);
        free(seat);
}

void ds_seat_set_focus(ds_seat_t *seat, ds_window_t *wnd)
{
        seat->focus = wnd;
}

void ds_seat_evac_focus(ds_seat_t *seat, ds_window_t *wnd)
{
        ds_window_t *nwnd;

        if (seat->focus == wnd) {
                /* Focus a different window. XXX Delegate to WM */
                nwnd = ds_display_next_window(wnd);
                if (nwnd == NULL)
                        nwnd = ds_display_first_window(wnd->display);
                if (nwnd == wnd)
                        nwnd = NULL;

                ds_seat_set_focus(seat, nwnd);
        }
}

/** Post keyboard event to the seat's focused window.
 *
 * @param seat Seat
 * @param event Event
 *
 * @return EOK on success or an error code
 */
errno_t ds_seat_post_kbd_event(ds_seat_t *seat, kbd_event_t *event)
{
        ds_window_t *dwindow = seat->focus;

        if (dwindow == NULL)
                return EOK;

        return ds_client_post_kbd_event(dwindow->client, dwindow, event);
}

/** @}
 */