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

   1 /* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
   2
   3    obt/display.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/display.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 static gint xerror_handler(Display *d, XErrorEvent *e);
  32
  33 static gboolean xerror_ignore = FALSE;
  34 static gboolean xerror_occured = FALSE;
  35
  36 Display* obt_display_open(const char *display_name)
  37 {
  38     gchar *n;
  39     Display *d = NULL;
  40
  41     n = display_name ? g_strdup(display_name) : NULL;
  42     d = XOpenDisplay(n);
  43     if (d) {
  44         if (fcntl(ConnectionNumber(d), F_SETFD, 1) == -1)
  45             g_message("Failed to set display as close-on-exec");
  46         XSetErrorHandler(xerror_handler);
  47     }
  48     g_free(n);
  49
  50     return d;
  51 }
  52
  53 void obt_display_close(Display *d)
  54 {
  55     if (d) XCloseDisplay(d);
  56 }
  57
  58 static gint xerror_handler(Display *d, XErrorEvent *e)
  59 {
  60 #ifdef DEBUG
  61     gchar errtxt[128];
  62
  63     XGetErrorText(d, e->error_code, errtxt, 127);
  64     if (!xerror_ignore) {
  65         if (e->error_code == BadWindow)
  66             /*g_message(_("X Error: %s\n"), errtxt)*/;
  67         else
  68             g_error("X Error: %s", errtxt);
  69     } else
  70         g_message("XError code %d '%s'", e->error_code, errtxt);
  71 #else
  72     (void)d; (void)e;
  73 #endif
  74
  75     xerror_occured = TRUE;
  76     return 0;
  77 }
  78
  79 void obt_display_ignore_errors(Display *d, gboolean ignore)
  80 {
  81     XSync(d, FALSE);
  82     xerror_ignore = ignore;
  83     if (ignore) xerror_occured = FALSE;
  84 }
  85
  86 gboolean obt_display_error_occured()
  87 {
  88     return xerror_occured;
  89 }