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annotate libgui/graphics/Logger.cc @ 19967:3cc0734283dc

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style fixes in Qt graphics code * Backend.cc, BaseControl.cc, ButtonControl.cc, Canvas.cc, CheckBoxControl.cc, Container.cc, ContextMenu.cc, EditControl.cc, Figure.cc, FigureWindow.cc, GLCanvas.cc, KeyMap.cc, ListBoxControl.cc, Logger.cc, Menu.cc, MouseModeActionGroup.cc, Object.cc, ObjectFactory.cc, ObjectProxy.cc, Panel.cc, PopupMenuControl.cc, PushButtonControl.cc, PushTool.cc, QtHandlesUtils.cc, RadioButtonControl.cc, SliderControl.cc, TextControl.cc, TextEdit.cc, ToggleButtonControl.cc, ToggleTool.cc, ToolBar.cc, ToolBarButton.cc, __init_qt__.cc: Follow a few more Octave coding conventions.
author John W. Eaton <jwe@octave.org>
date Thu, 19 Mar 2015 12:27:54 -0400
parents 523878f76518
children f0e61a67ad9f
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1 /*
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2
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3 Copyright (C) 2011-2014 Michael Goffioul
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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 <QMutex>
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28 #include <QMutexLocker>
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29 #include <QProcessEnvironment>
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30
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31 #include <cstdio>
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32
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33 #include "Logger.h"
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34
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35 namespace QtHandles
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36 {
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37
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38 Logger* Logger::s_instance = 0;
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39 QMutex* Logger::s_mutex = 0;
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40
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41 Logger::Logger (void)
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42 : m_debugEnabled (false)
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43 {
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44 QProcessEnvironment pe (QProcessEnvironment::systemEnvironment ());
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45
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46 if (pe.value ("QTHANDLES_DEBUG", "0") != "0")
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47 m_debugEnabled = true;
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48 }
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49
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50 Logger::~Logger (void)
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51 {
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52 }
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53
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54 Logger*
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55 Logger::instance (void)
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56 {
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57 if (! s_instance)
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58 {
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59 s_instance = new Logger ();
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60 s_mutex = new QMutex ();
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61 }
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62
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63 return s_instance;
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64 }
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65
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66 #define STATIC_LOGGER(fun) \
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67 void Logger::fun (const char* fmt, ...) \
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68 { \
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69 QMutexLocker lock (s_mutex); \
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70 va_list vl; \
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71 va_start (vl, fmt); \
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72 instance ()->fun ## V (fmt, vl); \
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73 va_end (vl); \
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74 }
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75
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76 STATIC_LOGGER (debug)
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77
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78 void
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79 Logger::debugV (const char* fmt, va_list arg)
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80 {
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81 if (m_debugEnabled)
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82 {
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83 vfprintf (stderr, fmt, arg);
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84 fprintf (stderr, "\n");
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85 }
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86 }
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87
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88 }; // namespace QtHandles