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annotate libgui/graphics/Object.h @ 31645:bd9da634f00d

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maint: Merge stable to default.
author John W. Eaton <jwe@octave.org>
date Tue, 06 Dec 2022 15:17:16 -0500
parents ca7d58406f82 9089bd969b37
children 431f80aba37a
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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 interpreter;
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41
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42 class Container;
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43 class ObjectProxy;
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44
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45 class Object : public QObject
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46 {
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47 Q_OBJECT
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48
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49 public:
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50 Object (octave::interpreter& interp, const graphics_object& go,
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51 QObject *obj = nullptr);
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52
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53 virtual ~Object (void);
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54
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55 base_properties& properties (void)
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56 { return object ().get_properties (); }
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57
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58 const base_properties& properties (void) const
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59 { return object ().get_properties (); }
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60
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61 template <typename T>
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62 typename T::properties& properties (void)
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63 {
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64 return dynamic_cast<typename T::properties&>
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65 (object ().get_properties ());
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66 }
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67
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68 template <typename T>
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69 const typename T::properties& properties (void) const
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70 {
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71 return dynamic_cast<const typename T::properties&>
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72 (object ().get_properties ());
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73 }
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74
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75 graphics_object object (void) const;
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76
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77 virtual QObject * qObject (void) { return m_qobject; }
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78
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79 template <typename T>
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80 T * qWidget (void) { return qobject_cast<T *>(qObject ()); }
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81
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82 virtual Container * innerContainer (void) = 0;
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83
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84 static Object * fromQObject (QObject *obj);
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85
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86 virtual void do_connections (const QObject *receiver,
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87 const QObject *emitter = nullptr);
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88
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89 signals:
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90
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91 void interpreter_event (const octave::fcn_callback& fcn);
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92 void interpreter_event (const octave::meth_callback& meth);
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93
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94 void gh_callback_event (const graphics_handle& h, const std::string& name);
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95
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96 void gh_callback_event (const graphics_handle& h, const std::string& name,
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97 const octave_value& data);
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98
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99 void gh_set_event (const graphics_handle& h, const std::string& name,
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100 const octave_value& value);
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101
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102 void gh_set_event (const graphics_handle& h, const std::string& name,
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103 const octave_value& value, bool notify_toolkit);
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104
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105 void gh_set_event (const graphics_handle& h, const std::string& name,
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106 const octave_value& value, bool notify_toolkit,
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107 bool redraw_figure);
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108
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109 public slots:
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110 void slotUpdate (int pId);
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111 void slotFinalize (void);
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112 void slotRedraw (void);
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113 void slotShow (void);
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114 void slotPrint (const QString& file_cmd, const QString& term);
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115
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116 void objectDestroyed (QObject *obj = nullptr);
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117
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118 protected:
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119 static Object *
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120 parentObject (octave::interpreter& interp, const graphics_object& go);
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121
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122 void init (QObject *obj, bool callBase = false);
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123
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124 virtual void update (int pId);
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125 virtual void finalize (void);
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126 virtual void redraw (void);
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127 virtual void show (void);
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128 virtual void print (const QString& file_cmd, const QString& term);
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129
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130 virtual void beingDeleted (void);
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131
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132 protected:
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133
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134 octave::interpreter& m_interpreter;
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135
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136 // Store the graphics object directly so that it will exist when
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137 // we need it. Previously, it was possible for the graphics
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138 // toolkit to get a handle to a figure, then have the interpreter
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139 // thread delete the corresponding object before the graphics
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140 // toolkit (GUI) thread had a chance to display it. It should be OK
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141 // to store this object and use it in both threads (graphics_object
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142 // uses a std::shared_ptr) provided that we protect access with
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143 // mutex locks.
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144 graphics_object m_go;
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145
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146 // Handle to the graphics object. This may be redundant now.
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147 // Also, the whole ObjectProxy thing may not need to store a
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148 // pointer now? Maybe we can just have a lookup table from figure
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149 // handle to Object? What does the FLTK toolkit do? Why does
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150 // this seem to be so complicated?
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151 graphics_handle m_handle;
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152
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153 QObject *m_qobject;
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154 };
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155
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156 }
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157
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158 #endif