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/instance.h"
  20 #include "obt/util.h"
  21
  22 #ifdef HAVE_STRING_H
  23 #  include <string.h>
  24 #endif
  25 #ifdef HAVE_FCNTL_H
  26 #  include <fcntl.h>
  27 #endif
  28 #ifdef HAVE_UNISTD_H
  29 #  include <unistd.h>
  30 #endif
  31
  32 struct _ObtInstance
  33 {
  34     gint ref;
  35     Display *d;
  36 };
  37
  38 ObtInstance* obt_instance_new(const char *display_name)
  39 {
  40     gchar *n;
  41     Display *d;
  42     ObtInstance *inst = NULL;
  43
  44     n = display_name ? g_strdup(display_name) : NULL;
  45     d = XOpenDisplay(n);
  46     if (d) {
  47         if (fcntl(ConnectionNumber(d), F_SETFD, 1) == -1)
  48             g_message("Failed to set display as close-on-exec");
  49
  50         inst = g_new(ObtInstance, 1);
  51         inst->ref = 1;
  52         inst->d = d;
  53     }
  54     g_free(n);
  55
  56     return inst;
  57 }
  58
  59 void obt_instance_ref(ObtInstance *inst)
  60 {
  61     ++inst->ref;
  62 }
  63
  64 void obt_instance_unref(ObtInstance *inst)
  65 {
  66     if (inst && --inst->ref == 0) {
  67         XCloseDisplay(inst->d);
  68         obt_free0(inst, ObtInstance, 1);
  69     }
  70 }
  71
  72 Display* obt_display(const ObtInstance *inst)
  73 {
  74     return inst->d;
  75 }