/*
* Copyright (c) 2023 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 WM client
*/
#include <adt/list.h>
#include <errno.h>
#include <io/log.h>
#include <stdlib.h>
#include "display.h"
#include "window.h"
#include "wmclient.h"
/** Create WM client.
*
* @param display Parent display
* @param cb WM client callbacks
* @param cb_arg Callback argument
* @param rwmclient Place to store pointer to new WM client.
* @return EOK on success, ENOMEM if out of memory
*/
errno_t ds_wmclient_create(ds_display_t *display, ds_wmclient_cb_t *cb,
void *cb_arg, ds_wmclient_t **rwmclient)
{
ds_wmclient_t *wmclient;
wmclient = calloc(1, sizeof(ds_wmclient_t));
if (wmclient == NULL)
return ENOMEM;
list_initialize(&wmclient->events);
wmclient->cb = cb;
wmclient->cb_arg = cb_arg;
ds_display_add_wmclient(display, wmclient);
*rwmclient = wmclient;
return EOK;
}
/** Destroy WM client.
*
* @param wmclient WM client
*/
void ds_wmclient_destroy(ds_wmclient_t *wmclient)
{
ds_wmclient_purge_events(wmclient);
ds_display_remove_wmclient(wmclient);
free(wmclient);
}
/** Get next event from WM client event queue.
*
* @param wmclient WM client
* @param event Place to store event
* @return EOK on success, ENOENT if event queue is empty
*/
errno_t ds_wmclient_get_event(ds_wmclient_t *wmclient, wndmgt_ev_t *event)
{
link_t *link;
ds_wmclient_ev_t *wevent;
link = list_first(&wmclient->events);
if (link == NULL)
return ENOENT;
wevent = list_get_instance(link, ds_wmclient_ev_t, levents);
list_remove(link);
*event = wevent->event;
free(wevent);
return EOK;
}
/** Purge events from WM client event queue.
*
* @param client Client
*/
void ds_wmclient_purge_events(ds_wmclient_t *wmclient)
{
link_t *cur;
link_t *next;
ds_wmclient_ev_t *wevent;
cur = list_first(&wmclient->events);
while (cur != NULL) {
next = list_next(cur, &wmclient->events);
wevent = list_get_instance(cur, ds_wmclient_ev_t, levents);
list_remove(cur);
free(wevent);
cur = next;
}
}
/** Post window added event to the WM client's message queue.
*
* @param wmclient WM client
* @param wnd_id Window ID of the added window
*
* @return EOK on success or an error code
*/
errno_t ds_wmclient_post_wnd_added_event(ds_wmclient_t *wmclient,
sysarg_t wnd_id)
{
ds_wmclient_ev_t *wevent;
log_msg(LOG_DEFAULT, LVL_DEBUG, "wmclient_pos_wnd_added_event "
"wmclient=%p wnd_id=%zu\n", (void *)wmclient, wnd_id);
wevent = calloc(1, sizeof(ds_wmclient_ev_t));
if (wevent == NULL)
return ENOMEM;
wevent->wmclient = wmclient;
wevent->event.etype = wmev_window_added;
wevent->event.wnd_id = wnd_id;
list_append(&wevent->levents, &wmclient->events);
/* Notify the client */
// TODO Do not send more than once until client drains the queue
if (wmclient->cb != NULL && wmclient->cb->ev_pending != NULL)
wmclient->cb->ev_pending(wmclient->cb_arg);
return EOK;
}
/** Post window removed event to the WM client's message queue.
*
* @param wmclient WM client
* @param wnd_id Window ID of the added window
*
* @return EOK on success or an error code
*/
errno_t ds_wmclient_post_wnd_removed_event(ds_wmclient_t *wmclient,
sysarg_t wnd_id)
{
ds_wmclient_ev_t *wevent;
log_msg(LOG_DEFAULT, LVL_DEBUG, "wmclient_pos_wnd_removed_event "
"wmclient=%p wnd_id=%zu\n", (void *)wmclient, wnd_id);
wevent = calloc(1, sizeof(ds_wmclient_ev_t));
if (wevent == NULL)
return ENOMEM;
wevent->wmclient = wmclient;
wevent->event.etype = wmev_window_removed;
wevent->event.wnd_id = wnd_id;
list_append(&wevent->levents, &wmclient->events);
/* Notify the client */
// TODO Do not send more than once until client drains the queue
if (wmclient->cb != NULL && wmclient->cb->ev_pending != NULL)
wmclient->cb->ev_pending(wmclient->cb_arg);
return EOK;
}
/** Post window changed event to the WM client's message queue.
*
* @param wmclient WM client
* @param wnd_id Window ID of the added window
*
* @return EOK on success or an error code
*/
errno_t ds_wmclient_post_wnd_changed_event(ds_wmclient_t *wmclient,
sysarg_t wnd_id)
{
ds_wmclient_ev_t *wevent;
log_msg(LOG_DEFAULT, LVL_DEBUG, "wmclient_pos_wnd_changed_event "
"wmclient=%p wnd_id=%zu\n", (void *)wmclient, wnd_id);
wevent = calloc(1, sizeof(ds_wmclient_ev_t));
if (wevent == NULL)
return ENOMEM;
wevent->wmclient = wmclient;
wevent->event.etype = wmev_window_changed;
wevent->event.wnd_id = wnd_id;
list_append(&wevent->levents, &wmclient->events);
/* Notify the client */
// TODO Do not send more than once until client drains the queue
if (wmclient->cb != NULL && wmclient->cb->ev_pending != NULL)
wmclient->cb->ev_pending(wmclient->cb_arg);
return EOK;
}
/** @}
*/