Mercurial > octave
annotate libgui/src/octave-qobject.cc @ 28851:1ac5a76ae91d
use [=] capture default specification where possible
Files affected: Canvas.cc, GLCanvas.cc, file-editor-tab.cc,
file-editor.cc, octave-qscintilla.cc, main-window.cc,
octave-qobject.cc, set-path-model.cc, variable-editor-model.cc,
workspace-view.cc, call-stack.cc, graphics.cc, input.cc,
interpreter.cc, load-path.cc, pr-output.cc, strfns.cc, sysdep.cc,
audiodevinfo.cc, audioread.cc, convhulln.cc, oct-parse.yy, pt-eval.cc,
lo-sysdep.cc, oct-glob.cc, oct-string.cc, and url-transfer.cc.
author | John W. Eaton <jwe@octave.org> |
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date | Fri, 02 Oct 2020 13:25:00 -0400 |
parents | 6aba3944b608 |
children | 02ee34a30351 |
rev | line source |
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1 //////////////////////////////////////////////////////////////////////// |
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2 // |
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3 // Copyright (C) 2011-2020 The Octave Project Developers |
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4 // |
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5 // See the file COPYRIGHT.md in the top-level directory of this |
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6 // distribution or <https://octave.org/copyright/>. |
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7 // |
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8 // This file is part of Octave. |
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9 // |
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10 // Octave is free software: you can redistribute it and/or modify it |
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11 // under the terms of the GNU General Public License as published by |
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12 // the Free Software Foundation, either version 3 of the License, or |
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13 // (at your option) any later version. |
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14 // |
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15 // Octave is distributed in the hope that it will be useful, but |
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16 // WITHOUT ANY WARRANTY; without even the implied warranty of |
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17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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18 // GNU General Public License for more details. |
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19 // |
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20 // You should have received a copy of the GNU General Public License |
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21 // along with Octave; see the file COPYING. If not, see |
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22 // <https://www.gnu.org/licenses/>. |
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23 // |
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24 //////////////////////////////////////////////////////////////////////// |
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25 |
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26 #if defined (HAVE_CONFIG_H) |
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27 # include "config.h" |
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28 #endif |
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29 |
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30 #include <utility> |
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31 |
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32 #include <QApplication> |
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33 #include <QClipboard> |
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34 #include <QFile> |
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35 #include <QTextCodec> |
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36 #include <QThread> |
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37 #include <QTimer> |
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38 #include <QTranslator> |
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39 |
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40 #include "interpreter-qobject.h" |
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41 #include "main-window.h" |
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42 #include "octave-qobject.h" |
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43 #include "qt-application.h" |
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44 #include "qt-interpreter-events.h" |
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45 #include "resource-manager.h" |
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46 #include "shortcut-manager.h" |
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47 |
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48 // Bug #55940 (Disable App Nap on Mac) |
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49 #if defined (Q_OS_MAC) |
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50 # include <objc/runtime.h> |
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51 # include <objc/message.h> |
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52 #endif |
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53 |
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54 #include "oct-env.h" |
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55 #include "version.h" |
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56 |
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57 #include "ovl.h" |
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58 |
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59 |
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60 // Bug #55940 (Disable App Nap on Mac) |
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61 #if defined (Q_OS_MAC) |
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62 static void disable_app_nap (void) |
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63 { |
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64 Class process_info_class; |
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65 SEL process_info_selector; |
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66 SEL begin_activity_with_options_selector; |
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67 id process_info; |
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68 id reason_string; |
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69 id osx_latencycritical_activity; |
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70 |
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71 // Option codes found at https://stackoverflow.com/questions/22784886/what-can-make-nanosleep-drift-with-exactly-10-sec-on-mac-os-x-10-9/32729281#32729281 |
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72 unsigned long long NSActivityUserInitiatedAllowingIdleSystemSleep = 0x00FFFFFFULL; |
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73 unsigned long long NSActivityLatencyCritical = 0xFF00000000ULL; |
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74 |
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75 // Avoid errors on older versions of OS X |
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76 process_info_class = static_cast<Class> (objc_getClass ("NSProcessInfo")); |
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77 if (process_info_class == nil) |
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78 return; |
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79 |
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80 process_info_selector = sel_getUid ("processInfo"); |
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81 if (class_getClassMethod (process_info_class, process_info_selector) |
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82 == nullptr) |
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83 return; |
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84 |
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85 begin_activity_with_options_selector = sel_getUid ("beginActivityWithOptions:reason:"); |
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86 if (class_getInstanceMethod (process_info_class, |
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87 begin_activity_with_options_selector) |
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88 == nullptr) |
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89 return; |
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90 |
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91 process_info = reinterpret_cast<id (*) (id, SEL)> (objc_msgSend) |
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92 (reinterpret_cast<id> (process_info_class), |
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93 process_info_selector); |
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94 if (process_info == nil) |
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95 return; |
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96 |
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97 reason_string = reinterpret_cast<id (*) (id, SEL)> (objc_msgSend) |
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98 (reinterpret_cast<id> (objc_getClass ("NSString")), |
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99 sel_getUid ("alloc")); |
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100 reason_string = reinterpret_cast<id (*) (id, SEL, const char *)> (objc_msgSend) |
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101 (reason_string, sel_getUid ("initWithUTF8String:"), |
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102 "App Nap causes pause() malfunction"); |
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103 |
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104 // Start an Activity that suppresses App Nap. This Activity will run for |
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105 // the entire duration of the Octave process. This is intentional, |
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106 // not a leak. |
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107 osx_latencycritical_activity = |
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108 reinterpret_cast<id (*) (id, SEL, unsigned long long, id)> (objc_msgSend) |
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109 (process_info, |
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110 begin_activity_with_options_selector, |
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111 NSActivityUserInitiatedAllowingIdleSystemSleep |
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112 | NSActivityLatencyCritical, |
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113 reason_string); |
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114 } |
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115 #endif |
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116 |
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117 namespace octave |
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118 { |
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119 // Disable all Qt messages by default. |
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120 |
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121 static void |
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122 message_handler (QtMsgType, const QMessageLogContext &, const QString &) |
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123 { } |
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124 |
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125 //! Reimplement QApplication::notify. Octave's own exceptions are |
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126 //! caught and rethrown in the interpreter thread. |
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127 |
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128 bool octave_qapplication::notify (QObject *receiver, QEvent *ev) |
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129 { |
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130 try |
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131 { |
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132 return QApplication::notify (receiver, ev); |
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133 } |
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134 catch (execution_exception& ee) |
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135 { |
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136 emit interpreter_event |
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137 ([=] (void) |
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138 { |
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139 // INTERPRETER THREAD |
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140 |
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141 throw ee; |
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142 }); |
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143 } |
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144 |
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145 return false; |
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146 } |
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147 |
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148 // We will create a QApplication object, even if START_GUI is false, |
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149 // so that we can use Qt widgets for plot windows when running in |
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150 // command-line mode. Note that we are creating an |
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151 // octave_qapplication object but handling it as a QApplication object |
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152 // because the octave_qapplication should behave identically to a |
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153 // QApplication object except that it overrides the notify method so |
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154 // we can handle forward Octave interpreter exceptions from the GUI |
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155 // thread to the interpreter thread. |
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156 |
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157 base_qobject::base_qobject (qt_application& app_context) |
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158 : QObject (), m_app_context (app_context), |
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159 m_argc (m_app_context.sys_argc ()), |
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160 m_argv (m_app_context.sys_argv ()), |
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161 m_qapplication (new octave_qapplication (m_argc, m_argv)), |
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162 m_resource_manager (), m_shortcut_manager (*this), |
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163 m_workspace_model (new workspace_model (*this)), |
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164 m_qt_tr (new QTranslator ()), m_gui_tr (new QTranslator ()), |
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165 m_qsci_tr (new QTranslator ()), m_translators_installed (false), |
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166 m_qt_interpreter_events (new qt_interpreter_events (*this)), |
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167 m_interpreter_qobj (new interpreter_qobject (*this)), |
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168 m_main_thread (new QThread ()) |
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169 { |
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170 std::string show_gui_msgs = |
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171 sys::env::getenv ("OCTAVE_SHOW_GUI_MESSAGES"); |
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172 |
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173 // Installing our handler suppresses the messages. |
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174 |
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175 if (show_gui_msgs.empty ()) |
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176 { |
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177 qInstallMessageHandler (message_handler); |
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178 } |
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179 |
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180 // Set the codec for all strings (before wizard or any GUI object) |
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181 #if ! defined (Q_OS_WIN32) |
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182 QTextCodec::setCodecForLocale (QTextCodec::codecForName ("UTF-8")); |
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183 #endif |
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184 |
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185 // Initialize global Qt application metadata. |
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186 |
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187 QCoreApplication::setApplicationName ("GNU Octave"); |
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188 QCoreApplication::setApplicationVersion (OCTAVE_VERSION); |
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189 |
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190 // Register octave_value_list for connecting thread crossing signals. |
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191 |
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192 qRegisterMetaType<octave_value_list> ("octave_value_list"); |
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193 |
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194 // Bug #55940 (Disable App Nap on Mac) |
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195 #if defined (Q_OS_MAC) |
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196 // Mac App Nap feature causes pause() and sleep() to misbehave. |
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197 // Disable it for the entire program run. |
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198 disable_app_nap (); |
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199 #endif |
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200 |
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201 // Force left-to-right alignment (see bug #46204) |
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202 m_qapplication->setLayoutDirection (Qt::LeftToRight); |
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203 |
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204 connect (m_interpreter_qobj, SIGNAL (execution_finished (int)), |
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205 this, SLOT (handle_interpreter_execution_finished (int))); |
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206 |
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207 connect (this, SIGNAL (request_interpreter_shutdown (int)), |
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208 m_interpreter_qobj, SLOT (shutdown (int))); |
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209 |
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210 connect (m_interpreter_qobj, SIGNAL (shutdown_finished (int)), |
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211 this, SLOT (handle_interpreter_shutdown_finished (int))); |
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212 |
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213 connect (m_main_thread, SIGNAL (finished (void)), |
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214 m_main_thread, SLOT (deleteLater (void))); |
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215 |
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216 // Handle any interpreter_event signal from the octave_qapplication |
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217 // object here. |
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218 |
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219 connect (m_qapplication, SIGNAL (interpreter_event (const fcn_callback&)), |
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220 this, SLOT (interpreter_event (const fcn_callback&))); |
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221 |
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222 connect (m_qapplication, SIGNAL (interpreter_event (const meth_callback&)), |
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223 this, SLOT (interpreter_event (const meth_callback&))); |
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224 |
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225 connect (qt_link (), |
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226 SIGNAL (copy_image_to_clipboard_signal (const QString&, bool)), |
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227 this, SLOT (copy_image_to_clipboard (const QString&, bool))); |
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228 } |
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229 |
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230 base_qobject::~base_qobject (void) |
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231 { |
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232 // Note that we don't delete m_main_thread here. That is handled by |
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233 // deleteLater slot that is called when the m_main_thread issues a |
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234 // finished signal. |
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235 |
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236 delete m_interpreter_qobj; |
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237 delete m_qsci_tr; |
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238 delete m_gui_tr; |
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239 delete m_qt_tr; |
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240 delete m_qapplication; |
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241 delete m_workspace_model; |
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242 |
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243 string_vector::delete_c_str_vec (m_argv); |
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244 } |
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245 |
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246 void base_qobject::config_translators (void) |
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247 { |
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248 if (m_translators_installed) |
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249 return; |
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250 |
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251 m_resource_manager.config_translators (m_qt_tr, m_qsci_tr, m_gui_tr); |
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252 |
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253 m_qapplication->installTranslator (m_qt_tr); |
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254 m_qapplication->installTranslator (m_gui_tr); |
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255 m_qapplication->installTranslator (m_qsci_tr); |
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256 |
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257 m_translators_installed = true; |
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258 } |
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259 |
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260 void base_qobject::start_main_thread (void) |
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261 { |
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262 // Defer initializing and executing the interpreter until after the main |
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263 // window and QApplication are running to prevent race conditions |
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264 QTimer::singleShot (0, m_interpreter_qobj, SLOT (execute (void))); |
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265 |
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266 m_interpreter_qobj->moveToThread (m_main_thread); |
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267 |
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268 m_main_thread->start (); |
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269 } |
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270 |
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271 int base_qobject::exec (void) |
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272 { |
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273 return m_qapplication->exec (); |
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274 } |
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275 |
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276 bool base_qobject::confirm_shutdown (void) |
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277 { |
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278 return true; |
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279 } |
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280 |
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281 void base_qobject::handle_interpreter_execution_finished (int exit_status) |
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282 { |
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283 emit request_interpreter_shutdown (exit_status); |
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284 } |
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285 |
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286 void base_qobject::handle_interpreter_shutdown_finished (int exit_status) |
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287 { |
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288 #if defined (Q_OS_MAC) |
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289 // fprintf to stderr is needed by macOS, for poorly-understood reasons. |
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290 fprintf (stderr, "\n"); |
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291 #endif |
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292 |
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293 m_main_thread->quit (); |
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294 |
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295 qApp->exit (exit_status); |
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296 } |
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297 |
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298 void base_qobject::interpreter_event (const fcn_callback& fcn) |
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299 { |
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300 // The following is a direct function call across threads. It works |
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301 // because the it is accessing a thread-safe queue of events that |
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302 // are later executed by the Octave interpreter in the other thread. |
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303 |
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304 // See also the comments in interpreter-qobject.h about |
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305 // interpreter_qobject slots. |
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306 |
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307 m_interpreter_qobj->interpreter_event (fcn); |
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308 } |
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309 |
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310 void base_qobject::interpreter_event (const meth_callback& meth) |
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311 { |
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312 // The following is a direct function call across threads. It works |
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313 // because the it is accessing a thread-safe queue of events that |
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314 // are later executed by the Octave interpreter in the other thread. |
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315 |
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316 // See also the comments in interpreter-qobject.h about |
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317 // interpreter_qobject slots. |
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318 |
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319 m_interpreter_qobj->interpreter_event (meth); |
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320 } |
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321 |
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322 void base_qobject::copy_image_to_clipboard (const QString& file, |
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323 bool remove_file) |
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324 { |
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325 QClipboard *clipboard = QApplication::clipboard (); |
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326 |
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327 QImage img (file); |
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328 |
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329 if (img.isNull ()) |
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330 { |
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331 // Report error? |
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332 return; |
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333 } |
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334 |
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335 clipboard->setImage (img); |
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336 |
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337 if (remove_file) |
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338 QFile::remove (file); |
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339 } |
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340 |
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341 cli_qobject::cli_qobject (qt_application& app_context) |
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342 : base_qobject (app_context) |
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343 { |
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344 // Get settings file. |
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345 m_resource_manager.reload_settings (); |
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346 |
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347 // After settings. |
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348 config_translators (); |
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349 |
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350 m_qapplication->setQuitOnLastWindowClosed (false); |
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351 |
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352 start_main_thread (); |
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353 } |
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354 |
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355 gui_qobject::gui_qobject (qt_application& app_context) |
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356 : base_qobject (app_context), m_main_window (new main_window (*this)) |
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357 { |
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358 connect (m_interpreter_qobj, SIGNAL (ready (void)), |
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359 m_main_window, SLOT (handle_octave_ready (void))); |
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360 |
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361 connect (qt_link (), |
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362 SIGNAL (focus_window_signal (const QString&)), |
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363 m_main_window, SLOT (focus_window (const QString&))); |
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364 |
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365 m_app_context.gui_running (true); |
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366 |
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367 start_main_thread (); |
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368 } |
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369 |
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370 gui_qobject::~gui_qobject (void) |
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371 { |
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372 delete m_main_window; |
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373 } |
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374 |
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375 bool gui_qobject::confirm_shutdown (void) |
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376 { |
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377 // Currently, we forward to main_window::confirm_shutdown instead of |
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378 // just displaying a dialog box here because the main_window also |
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379 // knows about and is responsible for notifying the editor. |
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380 |
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381 return m_main_window ? m_main_window->confirm_shutdown () : true; |
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382 } |
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383 } |