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annotate libgui/graphics/ButtonControl.cc @ 29542:3d34b70b5a49

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connect many Qt signals and slots without SIGNAL and SLOT macros This changes switches most code in the libgui/src and libgui/graphics directories to use the new Qt style of connecting signals and slots that uses pointers to member functions or function objects instead of strings to refer to the signal and slot functions. For an introduction, see https://wiki.qt.io/New_Signal_Slot_Syntax. There are many connections left to adapt. In some cases, there are overloaded functions (or default parameters) that need to be handled. Use of QOverload<> or an anonymous function should fix these. In others, we are connecting to parent objects where we only have a pointer to QWidget instead of a specific type of object. To fix those, we need to either move the code that makes th connection to a place where the actual types of both objects are known or pass more specific types as the parent object. In a few cases, there appear to real mismatches in the types of objects and the signal/slot functions. Files affected: ButtonControl.cc, ButtonGroup.cc, ContextMenu.cc, EditControl.cc, Figure.cc, ListBoxControl.cc, Menu.cc, Object.cc, ObjectProxy.cc, Panel.cc, PopupMenuControl.cc, PushTool.cc, SliderControl.cc, Table.cc, ToggleTool.cc, ToolBar.cc, annotation-dialog.cc, qt-graphics-toolkit.cc, color-picker.cc, command-widget.cc, dialog.cc, documentation-bookmarks.cc, documentation.cc, files-dock-widget.cc, find-files-dialog.cc, history-dock-widget.cc, interpreter-qobject.cc, file-editor-tab.cc, file-editor-tab.h, file-editor.cc, find-dialog.cc, octave-qscintilla.cc, main-window.cc, octave-dock-widget.cc, octave-qobject.cc, qt-interpreter-events.cc, set-path-dialog.cc, set-path-model.cc, settings-dialog.cc, shortcut-manager.cc, tab-bar.cc, variable-editor-model.cc, variable-editor.cc, welcome-wizard.cc, welcome-wizard.h, workspace-view.cc, and workspace-view.h.
author John W. Eaton <jwe@octave.org>
date Fri, 16 Apr 2021 23:06:32 -0400
parents 0a5b15007766
children 6ea4a84df9c7
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 2011-2021 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 (HAVE_CONFIG_H)
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27 # include "config.h"
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28 #endif
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29
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30 #include <QAbstractButton>
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31
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32 #include "ButtonControl.h"
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33 #include "ButtonGroup.h"
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34 #include "Container.h"
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35 #include "QtHandlesUtils.h"
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36
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37 #include "graphics.h"
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38 #include "interpreter.h"
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39
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40 namespace QtHandles
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41 {
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42
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43 ButtonControl::ButtonControl (octave::base_qobject& oct_qobj,
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44 octave::interpreter& interp,
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45 const graphics_object& go,
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46 QAbstractButton *btn)
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47 : BaseControl (oct_qobj, interp, go, btn), m_blockCallback (false)
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48 {
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49 uicontrol::properties& up = properties<uicontrol> ();
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50
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51 QString str = Utils::fromStdString (up.get_string_string ());
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52 str.replace ("&", "&&");
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53 btn->setText (str);
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54 if (btn->isCheckable () || up.style_is ("togglebutton"))
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55 {
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56 btn->setCheckable (true);
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57
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58 Matrix value = up.get_value ().matrix_value ();
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59
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60 if (value.numel () > 0 && value(0) == up.get_max ())
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61 btn->setChecked (true);
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62 }
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63
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64 connect (btn, &QAbstractButton::clicked, this, &ButtonControl::clicked);
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65 connect (btn, &QAbstractButton::toggled, this, &ButtonControl::toggled);
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66 }
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67
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68 ButtonControl::~ButtonControl (void)
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69 { }
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70
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71 void
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72 ButtonControl::update (int pId)
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73 {
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74 uicontrol::properties& up = properties<uicontrol> ();
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75 QAbstractButton *btn = qWidget<QAbstractButton> ();
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76
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77 switch (pId)
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78 {
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79 case uicontrol::properties::ID_STRING:
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80 {
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81 QString str = Utils::fromStdString (up.get_string_string ());
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82 str.replace ("&", "&&");
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83 btn->setText (str);
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84 break;
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85 }
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86
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87 case uicontrol::properties::ID_VALUE:
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88 m_blockCallback = true;
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89 if (btn->isCheckable ())
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90 {
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91 Matrix value = up.get_value ().matrix_value ();
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92
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93 if (value.numel () > 0)
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94 {
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95 double dValue = value(0);
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96
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97 if (dValue != 0.0 && dValue != 1.0)
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98 warning ("button value not within valid display range");
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99 else if (dValue == up.get_min () && btn->isChecked ())
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100 {
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101 btn->setChecked (false);
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102 if (up.style_is ("radiobutton") || up.style_is ("togglebutton"))
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103 {
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104 gh_manager& gh_mgr = m_interpreter.get_gh_manager ();
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105
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106 Object *parent = Object::parentObject (m_interpreter, gh_mgr.get_object (up.get___myhandle__ ()));
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107 ButtonGroup *btnGroup = dynamic_cast<ButtonGroup *>(parent);
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108 if (btnGroup)
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109 btnGroup->selectNothing ();
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110 }
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111 }
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112 else if (dValue == up.get_max () && ! btn->isChecked ())
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113 btn->setChecked (true);
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114 }
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115 }
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116 m_blockCallback = false;
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117 break;
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118
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119 default:
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120 BaseControl::update (pId);
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121 break;
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122 }
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123 }
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124
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125 void
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126 ButtonControl::toggled (bool checked)
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127 {
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128 QAbstractButton *btn = qWidget<QAbstractButton> ();
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129
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130 if (! m_blockCallback && btn->isCheckable ())
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131 {
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132 gh_manager& gh_mgr = m_interpreter.get_gh_manager ();
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133
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134 octave::autolock guard (gh_mgr.graphics_lock ());
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135
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136 uicontrol::properties& up = properties<uicontrol> ();
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137
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138 Matrix oldValue = up.get_value ().matrix_value ();
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139 double newValue = (checked ? up.get_max () : up.get_min ());
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140
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141 if (oldValue.numel () != 1 || (newValue != oldValue(0)))
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142 emit gh_set_event (m_handle, "value", newValue, false);
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143 emit gh_callback_event (m_handle, "callback");
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144 }
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145 }
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146
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147 void
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148 ButtonControl::clicked (void)
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149 {
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150 QAbstractButton *btn = qWidget<QAbstractButton> ();
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151
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152 if (! btn->isCheckable ())
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153 emit gh_callback_event (m_handle, "callback");
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154 }
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155
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156 };