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annotate libgui/graphics/Object.h @ 30564:796f54d4ddbf stable

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update Octave Project Developers copyright for the new year In files that have the "Octave Project Developers" copyright notice, update for 2021. In all .txi and .texi files except gpl.txi and gpl.texi in the doc/liboctave and doc/interpreter directories, change the copyright to "Octave Project Developers", the same as used for other source files. Update copyright notices for 2022 (not done since 2019). For gpl.txi and gpl.texi, change the copyright notice to be "Free Software Foundation, Inc." and leave the date at 2007 only because this file only contains the text of the GPL, not anything created by the Octave Project Developers. Add Paul Thomas to contributors.in.
author John W. Eaton <jwe@octave.org>
date Tue, 28 Dec 2021 18:22:40 -0500
parents 6ea4a84df9c7
children ca7d58406f82 9089bd969b37
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 2011-2022 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_Object_h)
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27 #define octave_Object_h 1
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28
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29 #include <QObject>
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30
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31 #include "event-manager.h"
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32 #include "graphics.h"
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33
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34 class QObject;
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35 class QString;
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36 class QWidget;
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37
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38 namespace octave
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39 {
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40 class base_qobject;
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41 class interpreter;
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42 }
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43
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44 namespace octave
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45 {
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46
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47 class Container;
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48 class ObjectProxy;
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49
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50 class Object : public QObject
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51 {
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52 Q_OBJECT
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53
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54 public:
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55 Object (octave::base_qobject& qobj, octave::interpreter& interp,
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56 const graphics_object& go, QObject *obj = nullptr);
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57
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58 virtual ~Object (void);
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59
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60 base_properties& properties (void)
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61 { return object ().get_properties (); }
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62
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63 const base_properties& properties (void) const
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64 { return object ().get_properties (); }
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65
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66 template <typename T>
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67 typename T::properties& properties (void)
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68 {
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69 return dynamic_cast<typename T::properties&>
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70 (object ().get_properties ());
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71 }
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72
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73 template <typename T>
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74 const typename T::properties& properties (void) const
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75 {
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76 return dynamic_cast<const typename T::properties&>
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77 (object ().get_properties ());
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78 }
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79
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80 graphics_object object (void) const;
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81
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82 virtual QObject * qObject (void) { return m_qobject; }
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83
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84 template <typename T>
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85 T * qWidget (void) { return qobject_cast<T *>(qObject ()); }
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86
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87 virtual Container * innerContainer (void) = 0;
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88
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89 static Object * fromQObject (QObject *obj);
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90
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91 virtual void do_connections (const QObject *receiver,
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92 const QObject *emitter = nullptr);
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93
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94 signals:
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95
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96 void interpreter_event (const octave::fcn_callback& fcn);
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97 void interpreter_event (const octave::meth_callback& meth);
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98
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99 void gh_callback_event (const graphics_handle& h, const std::string& name);
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100
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101 void gh_callback_event (const graphics_handle& h, const std::string& name,
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102 const octave_value& data);
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103
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104 void gh_set_event (const graphics_handle& h, const std::string& name,
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105 const octave_value& value);
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106
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107 void gh_set_event (const graphics_handle& h, const std::string& name,
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108 const octave_value& value, bool notify_toolkit);
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109
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110 void gh_set_event (const graphics_handle& h, const std::string& name,
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111 const octave_value& value, bool notify_toolkit,
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112 bool redraw_figure);
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113
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114 public slots:
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115 void slotUpdate (int pId);
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116 void slotFinalize (void);
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117 void slotRedraw (void);
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118 void slotShow (void);
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119 void slotPrint (const QString& file_cmd, const QString& term);
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120
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121 void objectDestroyed (QObject *obj = nullptr);
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122
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123 protected:
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124 static Object *
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125 parentObject (octave::interpreter& interp, const graphics_object& go);
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126
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127 void init (QObject *obj, bool callBase = false);
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128
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129 virtual void update (int pId);
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130 virtual void finalize (void);
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131 virtual void redraw (void);
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132 virtual void show (void);
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133 virtual void print (const QString& file_cmd, const QString& term);
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134
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135 virtual void beingDeleted (void);
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136
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137 protected:
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138
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139 octave::base_qobject& m_octave_qobj;
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140 octave::interpreter& m_interpreter;
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141
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142 // Store the graphics object directly so that it will exist when
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143 // we need it. Previously, it was possible for the graphics
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144 // toolkit to get a handle to a figure, then have the interpreter
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145 // thread delete the corresponding object before the graphics
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146 // toolkit (GUI) thread had a chance to display it. It should be OK
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147 // to store this object and use it in both threads (graphics_object
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148 // uses a std::shared_ptr) provided that we protect access with
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149 // mutex locks.
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150 graphics_object m_go;
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151
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152 // Handle to the graphics object. This may be redundant now.
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153 // Also, the whole ObjectProxy thing may not need to store a
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154 // pointer now? Maybe we can just have a lookup table from figure
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155 // handle to Object? What does the FLTK toolkit do? Why does
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156 // this seem to be so complicated?
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157 graphics_handle m_handle;
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158
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159 QObject *m_qobject;
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160 };
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161
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162 }
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163
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164 #endif