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annotate libgui/graphics/Logger.cc @ 27417:f844b1f03dcc

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update some header file lists in libgui sources * Canvas.cc, Figure.cc, GLCanvas.cc, Logger.cc, ObjectProxy.cc, QtHandlesUtils.cc, Table.cc, __init_qt__.cc, and annotation-dialog.cc: Alphabetize and organize header files. * variable-editor-model.cc: Also include Cell.h and oct-map.h.
author John W. Eaton <jwe@octave.org>
date Mon, 16 Sep 2019 23:35:19 -0400
parents 00f796120a6d
children b442ec6dda5c
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1 /*
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2
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3 Copyright (C) 2011-2019 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
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9 the Free Software Foundation, either version 3 of the License, or
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10 (at your 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
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13 WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 GNU General Public License 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 <https://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #if defined (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 <cstdio>
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28
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29 #include <QMutex>
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30 #include <QMutexLocker>
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31 #include <QProcessEnvironment>
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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 = nullptr;
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39 QMutex *Logger::s_mutex = nullptr;
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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 Logger*
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54 Logger::instance (void)
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55 {
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56 if (! s_instance)
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57 {
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58 s_instance = new Logger ();
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59 s_mutex = new QMutex ();
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60 }
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61
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62 return s_instance;
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63 }
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64
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65 #define STATIC_LOGGER(fun) \
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66 void Logger::fun (const char *fmt, ...) \
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67 { \
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68 QMutexLocker lock (s_mutex); \
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69 va_list vl; \
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70 va_start (vl, fmt); \
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71 instance ()->fun ## V (fmt, vl); \
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72 va_end (vl); \
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73 }
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74
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75 STATIC_LOGGER (debug)
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76
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77 void
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78 Logger::debugV (const char *fmt, va_list arg)
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79 {
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80 if (m_debugEnabled)
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81 {
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82 vfprintf (stderr, fmt, arg);
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83 fprintf (stderr, "\n");
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84 }
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85 }
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86
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87 }