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annotate libgui/src/octave-gui.cc @ 17569:9d0992c6df30

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arrange to pass signals to the GUI subprocess * sighandlers.h, sighandlers.cc (gui_pid): New static variable. (gui_driver_sig_handler, install_gui_driver_signal_handlers): New functions. * octave-gui.cc (dissociate_terminal): Call install_gui_driver_signal_handlers from parent process.
author John W. Eaton <jwe@octave.org>
date Fri, 04 Oct 2013 15:26:10 -0400
parents 1b388d922e6b
children 7ec70c575ad6
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2
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3 Copyright (C) 2011-2012 Jacob Dawid
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4
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5 This file is part of Octave.
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6
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7 Octave is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 3 of the License, or (at your
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10 option) any later version.
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11
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12 Octave is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Octave; see the file COPYING. If not, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #ifdef HAVE_CONFIG_H
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24 #include <config.h>
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25 #endif
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26
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27 #include <QtGui/QApplication>
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28 #include <QTranslator>
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29
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30 #include <iostream>
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31
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32 #include <unistd.h>
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33 #include <fcntl.h>
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34
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35 #if defined (HAVE_SYS_IOCTL_H)
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36 #include <sys/ioctl.h>
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37 #endif
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38
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39 #include "lo-utils.h"
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40 #include "oct-env.h"
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41 #include "oct-syscalls.h"
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42 #include "syswait.h"
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43
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44 #include "sighandlers.h"
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45
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46 #include "welcome-wizard.h"
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47 #include "resource-manager.h"
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48 #include "main-window.h"
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49 #include "octave-gui.h"
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50
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51 // Dissociate from the controlling terminal, if any.
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52
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53 static void
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54 dissociate_terminal (void)
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55 {
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56 #if ! (defined (__WIN32__) || defined (__APPLE__)) || defined (__CYGWIN__)
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57
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58 pid_t pid = fork ();
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59
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60 if (pid < 0)
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61 {
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62 std::cerr << "fork failed!" << std::endl;;
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63 exit (1);
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64 }
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65 else if (pid == 0)
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66 {
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67 // Child.
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68
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69 if (setsid () < 0)
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70 {
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71 std::cerr << "setsid error" << std::endl;
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72 exit (1);
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73 }
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74 }
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75 else
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76 {
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77 // Parent
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78
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79 install_gui_driver_signal_handlers (pid);
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80
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81 int status;
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82
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83 waitpid (pid, &status, 0);
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84
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85 exit (octave_wait::ifexited (status)
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86 ? octave_wait::exitstatus (status) : 127);
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87 }
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88
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89 #endif
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90 }
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91
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92 int
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93 octave_start_gui (int argc, char *argv[], bool fork)
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94 {
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95 if (fork)
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96 dissociate_terminal ();
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97
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98 QApplication application (argc, argv);
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99
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100 // install translators for the gui and qt text
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101 QTranslator gui_tr, qt_tr, qsci_tr;
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102 resource_manager::config_translators (&qt_tr,&qsci_tr,&gui_tr);
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103 application.installTranslator (&qt_tr);
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104 application.installTranslator (&qsci_tr);
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105 application.installTranslator (&gui_tr);
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106
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107 while (true)
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108 {
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109 if (resource_manager::is_first_run ())
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110 {
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111 welcome_wizard welcomeWizard;
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112 welcomeWizard.exec ();
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113 resource_manager::reload_settings ();
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114 }
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115 else
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116 {
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117 // update network-settings
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118 resource_manager::update_network_settings ();
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119
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120 #if ! defined (__WIN32__) || defined (__CYGWIN__)
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121 // If we were started from a launcher, TERM might not be
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122 // defined, but we provide a terminal with xterm
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123 // capabilities.
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124
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125 std::string term = octave_env::getenv ("TERM");
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126
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127 if (term.empty ())
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128 octave_env::putenv ("TERM", "xterm");
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129 #else
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130 std::string term = octave_env::getenv ("TERM");
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131
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132 if (term.empty ())
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133 octave_env::putenv ("TERM", "cygwin");
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134 #endif
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135
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22ab4fe661d7 gui: selectable language in settings dialog
Torsten <ttl@justmail.de>
parents: 15708
diff changeset
136 // create main window, read settings, and show window
14709
f50591409306 Started to rename class names and methods from camel case to underscore-
Jacob Dawid <jacob.dawid@googlemail.com>
parents: 14707
diff changeset
137 main_window w;
17083
ceca3e65a8fe make sure a central menu bar does not show a widgets title but "Octave"
Torsten <ttl@justmail.de>
parents: 16858
diff changeset
138 w.read_settings (); // get widget settings and window layout
15209
a3c8a3c2dbda set initial keyboard focus in command window (bug #36955)
John W. Eaton <jwe@octave.org>
parents: 15204
diff changeset
139 w.focus_command_window ();
15987
47a4c92924a7 gui: prevent error messages at start-up (regression from changeset 6c0fce0632a4)
Torsten <ttl@justmail.de>
parents: 15972
diff changeset
140 w.connect_visibility_changed (); // connect signals for changes in
47a4c92924a7 gui: prevent error messages at start-up (regression from changeset 6c0fce0632a4)
Torsten <ttl@justmail.de>
parents: 15972
diff changeset
141 // visibility not before w is shown
13668
421afeae929b Added a settings wizard that appears at first startup of Octave GUI.
Jacob Dawid <jacob.dawid@googlemail.com>
parents: 13658
diff changeset
142 return application.exec ();
421afeae929b Added a settings wizard that appears at first startup of Octave GUI.
Jacob Dawid <jacob.dawid@googlemail.com>
parents: 13658
diff changeset
143 }
421afeae929b Added a settings wizard that appears at first startup of Octave GUI.
Jacob Dawid <jacob.dawid@googlemail.com>
parents: 13658
diff changeset
144 }
13501
86d6c3b90ad7 Added new gui files.
Jacob Dawid <jacob.dawid@googlemail.com>
parents:
diff changeset
145 }