Logo Search packages:      
Sourcecode: wayland-demos version File versions  Download package

wayland-glib.c

/*
 * Copyright © 2008 Kristian Høgsberg
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, provided that
 * the above copyright notice appear in all copies and that both that copyright
 * notice and this permission notice appear in supporting documentation, and
 * that the name of the copyright holders not be used in advertising or
 * publicity pertaining to distribution of the software without specific,
 * written prior permission.  The copyright holders make no representations
 * about the suitability of this software for any purpose.  It is provided "as
 * is" without express or implied warranty.
 *
 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
 * OF THIS SOFTWARE.
 */

#include <stdint.h>
#include <glib/giochannel.h>
#include "wayland-client.h"
#include "wayland-glib.h"

00028 typedef struct _WlSource {
      GSource source;
      GPollFD pfd;
      uint32_t mask;
      struct wl_display *display;
} WlSource;

static gboolean
wl_glib_source_prepare(GSource *base, gint *timeout)
{
      WlSource *source = (WlSource *) base;

      *timeout = -1;

      /* We have to add/remove the GPollFD if we want to update our
       * poll event mask dynamically.  Instead, let's just flush all
       * write on idle instead, which is what this amounts to. */

      while (source->mask & WL_DISPLAY_WRITABLE)
            wl_display_iterate(source->display,
                           WL_DISPLAY_WRITABLE);

      return FALSE;
}

static gboolean
wl_glib_source_check(GSource *base)
{
      WlSource *source = (WlSource *) base;

      return source->pfd.revents;
}

static gboolean
wl_glib_source_dispatch(GSource *base,
                  GSourceFunc callback,
                  gpointer data)
{
      WlSource *source = (WlSource *) base;

      wl_display_iterate(source->display,
                     WL_DISPLAY_READABLE);

      return TRUE;
}

static GSourceFuncs wl_glib_source_funcs = {
      wl_glib_source_prepare,
      wl_glib_source_check,
      wl_glib_source_dispatch,
      NULL
};

static int
wl_glib_source_update(uint32_t mask, void *data)
{
      WlSource *source = data;

      source->mask = mask;

      return 0;
}

GSource *
wl_glib_source_new(struct wl_display *display)
{
      WlSource *source;

      source = (WlSource *) g_source_new(&wl_glib_source_funcs,
                                 sizeof (WlSource));
      source->display = display;
      source->pfd.fd = wl_display_get_fd(display,
                                 wl_glib_source_update, source);
      source->pfd.events = G_IO_IN | G_IO_ERR;
      g_source_add_poll(&source->source, &source->pfd);

      return &source->source;
}

Generated by  Doxygen 1.6.0   Back to index