Dogcows Code - chaz/openbox/blob - obt/instance.c

   1 /* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
   2
   3    obt/instance.c for the Openbox window manager
   4    Copyright (c) 2007        Dana Jansens
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    See the COPYING file for a copy of the GNU General Public License.
  17 */
  18
  19 #include "obt/obt.h"
  20
  21 #ifdef HAVE_STRING_H
  22 #  include <string.h>
  23 #endif
  24 #ifdef HAVE_FCNTL_H
  25 #  include <fcntl.h>
  26 #endif
  27 #ifdef HAVE_UNISTD_H
  28 #  include <unistd.h>
  29 #endif
  30
  31 struct _ObtInstance
  32 {
  33     gint ref;
  34     Display *d;
  35 };
  36
  37 ObtInstance* obt_instance_new(const char *display_name)
  38 {
  39     gchar *n;
  40     Display *d;
  41     ObtInstance *inst = NULL;
  42
  43     n = display_name ? g_strdup(display_name) : NULL;
  44     d = XOpenDisplay(n);
  45     if (d) {
  46         if (fcntl(ConnectionNumber(d), F_SETFD, 1) == -1)
  47             g_message("Failed to set display as close-on-exec");
  48
  49         inst = g_new(ObtInstance, 1);
  50         inst->ref = 1;
  51         inst->d = d;
  52     }
  53     g_free(n);
  54
  55     return inst;
  56 }
  57
  58 void obt_instance_ref(ObtInstance *inst)
  59 {
  60     ++inst->ref;
  61 }
  62
  63 void obt_instance_unref(ObtInstance *inst)
  64 {
  65     if (inst && --inst->ref == 0) {
  66         XCloseDisplay(inst->d);
  67         obt_free0(inst, ObtInstance, 1);
  68     }
  69 }
  70
  71 Display* obt_display(const ObtInstance *inst)
  72 {
  73     return inst->d;
  74 }