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annotate libgui/src/gui-settings.h @ 31640:e518e1f7e944

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Backed out changeset 34c3cd39c4b9 Revert change because there is code that uses gui_pref.ignore, but only on MAC_OS: global_use_native_dialogs in gui-preferences-global.h. Are there others?
author John W. Eaton <jwe@octave.org>
date Mon, 05 Dec 2022 10:17:17 -0500
parents 474e184321d3
children 431f80aba37a
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 2019-2022 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 (octave_gui_settings_h)
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27 #define octave_gui_settings_h 1
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28
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29 #include <QIcon>
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30 #include <QString>
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31 #include <QSettings>
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32
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33 #include "gui-preferences.h"
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34
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35 namespace octave
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36 {
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37 class gui_settings : public QSettings
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38 {
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39 Q_OBJECT
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40
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41 public:
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42
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43 // Location, name, and format of settings file determined by
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44 // settings in qt_application class construtor.
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45
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46 gui_settings (QObject *parent = nullptr)
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47 : QSettings (parent)
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48 { }
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49
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50 gui_settings (const QString& file_name, QSettings::Format format,
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51 QObject *parent = nullptr)
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52 : QSettings (file_name, format, parent)
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53 { }
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54
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55 gui_settings (QSettings::Format format, QSettings::Scope scope,
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56 const QString& organization,
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57 const QString& application = QString (),
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58 QObject *parent = nullptr)
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59 : QSettings (format, scope, organization, application, parent)
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60 { }
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61
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62 // No copying!
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63
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64 gui_settings (const gui_settings&) = delete;
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65
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66 gui_settings& operator = (const gui_settings&) = delete;
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67
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68 ~gui_settings (void) = default;
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69
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70 QString file_name (void) const;
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71
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72 QString directory_name (void) const;
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73
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74 using QSettings::value;
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75
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76 QVariant value (const gui_pref& pref) const
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77 {
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78 if (pref.ignore)
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79 return pref.def; // ignore the current pref and always use default
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80
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81 return value (pref.key, pref.def);
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82 }
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83
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84 /*!
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85 Reading a color from the given QVaraitn @p def taking different
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86 color modes into account. The default value for a second color mode
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87 @p mode=1 is deterimined from the standard default value @p mode=0
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88 by inverting the lightness
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89 \f{eqnarray*}{
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90 H_1 &=& H_0\\
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91 S_1 &=& S_0\\
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92 L_1 &=& 1.0 - 0.85 L_0 L_0 > 0.3
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93 L_1 &=& 1.0 - 0.70 L_0 L_0 < 0.3
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94 \f}
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95
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96 @param def Color default value given by a QVariant of QColor
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97 or QPalette::ColorRole
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98 @param mode Color mode (currently 0 or 1, default is 0)
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99
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100 @return Color as QColor
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101 */
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102 QColor get_color_value (const QVariant& def, int mode = 0) const;
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103
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104 /*!
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105 Reading a color from the gui_settings taking possible color modes
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106 into account. The default value for a second color mode @p mode=1 is
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107 deterimined from the standard default value @p mode=0 by inverting
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108 the lightness (see get_color_value())
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109
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110 @param pref gui preference (key string, default value); the default
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111 value can be given by QColor or QPalette::ColorRole
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112 @param mode Color mode (currently 0 or 1, default is 0)
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113
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114 @return Color as QColor
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115 */
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116 QColor color_value (const gui_pref& pref, int mode = 0) const;
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117
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118 /*!
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119 Writing a color to the gui_settings taking possible color modes
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120 into account. When @p mode is not zero (standard mode), the
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121 extension related to the mode is appended to the settings key string
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122
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123 @param pref gui preference where the color should be written
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124 @param color QColor to write to the settings
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125 @param mode Color mode (currently 0 or 1, default is 0)
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126
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127 */
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128 void set_color_value (const gui_pref& pref, const QColor& color,
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129 int mode = 0);
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130
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131 QString sc_value (const sc_pref& pref) const;
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132
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133 QKeySequence sc_def_value (const sc_pref& pref) const;
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134
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135 // config_icon_theme, icon, get_default_font_family,
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136 // get_default_font, and possibly reload and check could be global
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137 // functions instead of member functions. But at least for the icon
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138 // function, defining it as a member function means that we can
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139 // create a single gui_settings object and access multiple icon
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140 // objects rather than having to create a separate settings object
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141 // each time that an icon is needed. OTOH, creating the base
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142 // QSettings object is supposed to be fast, so that may not matter.
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143 // Hmm.
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144
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145 void config_icon_theme (void);
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146
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147 QIcon icon (const QString& icon_name, bool octave_only = false,
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148 const QString& icon_alt_name = QString ());
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149
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150 QString get_default_font_family (void);
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151
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152 QStringList get_default_font (void);
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153
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154 void reload (void);
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155
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156 private:
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157
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158 void check (void);
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159 };
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160
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161 }
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162
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163 // Some constants used in the preferences of several widgets and therefore
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164 // defined globally here
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165
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166 // Constants for handling different color schemes
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167 const QColor settings_color_no_change (255, 0, 255);
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168 const QStringList settings_color_modes_ext (QStringList () << "" << "_2");
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169 const int settings_reload_default_colors_flag = -1;
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170
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171 #endif
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172