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/*
* kmscon - Dummy Session
*
* Copyright (c) 2012 David Herrmann <dh.herrmann@googlemail.com>
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* Dummy Session
*/
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include "kmscon_dummy.h"
#include "kmscon_seat.h"
#include "shl_dlist.h"
#include "shl_log.h"
#define LOG_SUBSYSTEM "dummy"
struct display {
struct shl_dlist list;
struct uterm_display *disp;
};
struct kmscon_dummy {
struct kmscon_session *session;
struct shl_dlist displays;
bool active;
};
static void dummy_redraw(struct kmscon_dummy *dummy, struct display *d)
{
struct uterm_mode *mode;
unsigned int w, h;
mode = uterm_display_get_current(d->disp);
w = uterm_mode_get_width(mode);
h = uterm_mode_get_height(mode);
uterm_display_fill(d->disp, 0, 0, 0, 0, 0, w, h);
uterm_display_swap(d->disp, false);
}
static int dummy_session_event(struct kmscon_session *session,
struct kmscon_session_event *ev, void *data)
{
struct kmscon_dummy *dummy = data;
struct display *d;
struct shl_dlist *iter;
switch (ev->type) {
case KMSCON_SESSION_DISPLAY_NEW:
d = malloc(sizeof(*d));
if (!d) {
log_error("cannot allocate memory for new display");
break;
}
memset(d, 0, sizeof(*d));
d->disp = ev->disp;
shl_dlist_link_tail(&dummy->displays, &d->list);
if (dummy->active)
dummy_redraw(dummy, d);
break;
case KMSCON_SESSION_DISPLAY_GONE:
shl_dlist_for_each(iter, &dummy->displays) {
d = shl_dlist_entry(iter, struct display, list);
if (d->disp != ev->disp)
continue;
shl_dlist_unlink(&d->list);
free(d);
break;
}
break;
case KMSCON_SESSION_DISPLAY_REFRESH:
shl_dlist_for_each(iter, &dummy->displays) {
d = shl_dlist_entry(iter, struct display, list);
if (d->disp != ev->disp)
continue;
if (dummy->active)
dummy_redraw(dummy, d);
break;
}
break;
case KMSCON_SESSION_ACTIVATE:
dummy->active = true;
shl_dlist_for_each(iter, &dummy->displays) {
d = shl_dlist_entry(iter, struct display, list);
dummy_redraw(dummy, d);
}
break;
case KMSCON_SESSION_DEACTIVATE:
dummy->active = false;
break;
case KMSCON_SESSION_UNREGISTER:
while (!shl_dlist_empty(&dummy->displays)) {
d = shl_dlist_entry(dummy->displays.prev,
struct display, list);
shl_dlist_unlink(&d->list);
free(d);
}
free(dummy);
break;
}
return 0;
}
int kmscon_dummy_register(struct kmscon_session **out,
struct kmscon_seat *seat)
{
struct kmscon_dummy *dummy;
int ret;
if (!out || !seat)
return -EINVAL;
dummy = malloc(sizeof(*dummy));
if (!dummy)
return -ENOMEM;
memset(dummy, 0, sizeof(*dummy));
shl_dlist_init(&dummy->displays);
ret = kmscon_seat_register_session(seat, &dummy->session,
dummy_session_event, dummy);
if (ret) {
log_error("cannot register session for dummy: %d", ret);
goto err_free;
}
*out = dummy->session;
log_debug("new dummy object %p", dummy);
return 0;
err_free:
free(dummy);
return ret;
}
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