Mercurial > octave
annotate libgui/graphics/ListBoxControl.cc @ 27919:1891570abac8
update Octave Project Developers copyright for the new year
In files that have the "Octave Project Developers" copyright notice,
update for 2020.
author | John W. Eaton <jwe@octave.org> |
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date | Mon, 06 Jan 2020 22:29:51 -0500 |
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1 /* |
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2 |
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3 Copyright (C) 2011-2020 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 distribution |
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6 or <https://octave.org/COPYRIGHT.html/>. |
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7 |
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8 |
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9 This file is part of Octave. |
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10 |
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11 Octave is free software: you can redistribute it and/or modify it |
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12 under the terms of the GNU General Public License as published by |
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13 the Free Software Foundation, either version 3 of the License, or |
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14 (at your option) any later version. |
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15 |
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16 Octave is distributed in the hope that it will be useful, but |
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17 WITHOUT ANY WARRANTY; without even the implied warranty of |
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18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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19 GNU General Public License for more details. |
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20 |
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21 You should have received a copy of the GNU General Public License |
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22 along with Octave; see the file COPYING. If not, see |
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23 <https://www.gnu.org/licenses/>. |
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24 |
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25 */ |
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26 |
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27 #if defined (HAVE_CONFIG_H) |
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28 # include "config.h" |
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29 #endif |
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30 |
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31 #include <QListWidget> |
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32 #include <QEvent> |
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33 #include <QMouseEvent> |
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34 |
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35 #include "Container.h" |
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36 #include "ListBoxControl.h" |
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37 #include "QtHandlesUtils.h" |
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38 |
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39 #include "octave-qobject.h" |
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40 |
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41 namespace QtHandles |
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42 { |
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43 |
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44 static void |
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45 updateSelection (QListWidget *list, const Matrix& value) |
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46 { |
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47 octave_idx_type n = value.numel (); |
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48 int lc = list->count (); |
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49 |
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50 list->clearSelection (); |
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51 |
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52 for (octave_idx_type i = 0; i < n; i++) |
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53 { |
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54 int idx = octave::math::round (value(i)); |
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55 |
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56 if (1 <= idx && idx <= lc) |
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57 { |
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58 list->item (idx-1)->setSelected (true); |
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59 list->scrollToItem (list->item (idx-1)); |
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60 if (i == 0 |
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61 && list->selectionMode () == QAbstractItemView::SingleSelection) |
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62 break; |
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63 } |
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64 else |
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65 { |
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66 // Invalid selection. |
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67 list->clearSelection (); |
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68 break; |
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69 } |
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70 } |
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71 } |
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72 |
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73 ListBoxControl* |
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74 ListBoxControl::create (octave::base_qobject& oct_qobj, |
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75 octave::interpreter& interp, |
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76 const graphics_object& go) |
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77 { |
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78 Object *parent = parentObject (interp, go); |
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79 |
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80 if (parent) |
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81 { |
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82 Container *container = parent->innerContainer (); |
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83 |
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84 if (container) |
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85 return new ListBoxControl (oct_qobj, interp, go, |
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86 new QListWidget (container)); |
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87 } |
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88 |
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89 return nullptr; |
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90 } |
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91 |
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92 ListBoxControl::ListBoxControl (octave::base_qobject& oct_qobj, |
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93 octave::interpreter& interp, |
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94 const graphics_object& go, QListWidget *list) |
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95 : BaseControl (oct_qobj, interp, go, list), m_blockCallback (false), |
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96 m_selectionChanged (false) |
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97 { |
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98 uicontrol::properties& up = properties<uicontrol> (); |
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99 |
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100 list->addItems (Utils::fromStringVector (up.get_string_vector ())); |
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101 if ((up.get_max () - up.get_min ()) > 1) |
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102 list->setSelectionMode (QAbstractItemView::ExtendedSelection); |
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103 else |
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104 list->setSelectionMode (QAbstractItemView::SingleSelection); |
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105 Matrix value = up.get_value ().matrix_value (); |
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106 if (value.numel () > 0) |
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107 { |
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108 octave_idx_type n = value.numel (); |
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109 int lc = list->count (); |
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110 |
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111 for (octave_idx_type i = 0; i < n; i++) |
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112 { |
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113 int idx = octave::math::round (value(i)); |
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114 |
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115 if (1 <= idx && idx <= lc) |
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116 { |
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117 list->item (idx-1)->setSelected (true); |
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118 list->scrollToItem (list->item (idx-1)); |
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119 if (i == 0 && (list->selectionMode () |
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120 == QAbstractItemView::SingleSelection)) |
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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 |
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126 list->viewport ()->installEventFilter (this); |
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127 |
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128 connect (list, SIGNAL (itemSelectionChanged (void)), |
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129 SLOT (itemSelectionChanged (void))); |
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130 connect (list, SIGNAL (activated (const QModelIndex &)), |
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131 SLOT (itemActivated (const QModelIndex &))); |
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132 connect (list, SIGNAL (itemPressed (QListWidgetItem*)), |
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133 SLOT (itemPressed (QListWidgetItem*))); |
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134 } |
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135 |
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136 ListBoxControl::~ListBoxControl (void) |
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137 { } |
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138 |
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139 void |
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140 ListBoxControl::update (int pId) |
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141 { |
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142 uicontrol::properties& up = properties<uicontrol> (); |
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143 QListWidget *list = qWidget<QListWidget> (); |
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144 |
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145 switch (pId) |
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146 { |
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147 case uicontrol::properties::ID_STRING: |
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148 m_blockCallback = true; |
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149 list->clear (); |
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150 list->addItems (Utils::fromStringVector (up.get_string_vector ())); |
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151 updateSelection (list, up.get_value ().matrix_value ()); |
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152 m_blockCallback = false; |
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153 break; |
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154 |
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155 case uicontrol::properties::ID_MIN: |
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156 |
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157 case uicontrol::properties::ID_MAX: |
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158 if ((up.get_max () - up.get_min ()) > 1) |
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159 list->setSelectionMode (QAbstractItemView::ExtendedSelection); |
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160 else |
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161 list->setSelectionMode (QAbstractItemView::SingleSelection); |
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162 break; |
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163 |
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164 case uicontrol::properties::ID_VALUE: |
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165 m_blockCallback = true; |
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166 updateSelection (list, up.get_value ().matrix_value ()); |
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167 m_blockCallback = false; |
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168 break; |
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169 |
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170 default: |
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171 BaseControl::update (pId); |
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172 break; |
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173 } |
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174 } |
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175 |
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176 void |
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177 ListBoxControl::sendSelectionChange () |
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178 { |
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179 if (! m_blockCallback) |
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180 { |
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181 QListWidget *list = qWidget<QListWidget> (); |
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182 |
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183 QModelIndexList l = list->selectionModel ()->selectedIndexes (); |
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184 Matrix value (dim_vector (1, l.size ())); |
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185 int i = 0; |
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186 |
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187 for (const auto& idx : l) |
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188 value(i++) = idx.row () + 1; |
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189 |
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190 emit gh_set_event (m_handle, "value", octave_value (value), false); |
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191 emit gh_callback_event (m_handle, "callback"); |
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192 } |
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193 |
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194 m_selectionChanged = false; |
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195 } |
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196 |
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197 void |
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198 ListBoxControl::itemSelectionChanged (void) |
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199 { |
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200 if (! m_blockCallback) |
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201 m_selectionChanged = true; |
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202 } |
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203 |
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204 void |
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205 ListBoxControl::itemActivated (const QModelIndex &) |
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206 { |
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207 m_selectionChanged = true; |
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208 } |
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209 void |
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210 ListBoxControl::itemPressed (QListWidgetItem*) |
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211 { |
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212 m_selectionChanged = true; |
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213 } |
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214 |
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215 bool |
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216 ListBoxControl::eventFilter (QObject *watched, QEvent *e) |
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217 { |
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218 // listbox change |
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219 if (watched == m_qobject) |
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220 { |
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221 switch (e->type ()) |
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222 { |
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223 case QEvent::KeyRelease: |
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224 if (m_selectionChanged) |
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225 sendSelectionChange (); |
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226 m_selectionChanged = false; |
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227 break; |
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228 |
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229 default: |
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230 break; |
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231 } |
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232 |
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233 return Object::eventFilter (watched, e); |
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234 } |
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235 // listbox viewport |
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236 else |
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237 { |
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238 bool override_return = false; |
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239 QListWidget *list = qWidget<QListWidget> (); |
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240 |
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241 switch (e->type ()) |
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242 { |
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243 case QEvent::MouseButtonPress: |
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244 { |
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245 QMouseEvent *m = dynamic_cast<QMouseEvent *> (e); |
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246 |
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247 if (m->button () & Qt::RightButton) |
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248 override_return = true; |
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249 else |
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250 { |
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251 if (! list->indexAt (m->pos ()).isValid ()) |
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252 override_return = true; |
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253 m_selectionChanged = true; |
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254 } |
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255 break; |
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256 } |
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257 case QEvent::MouseButtonRelease: |
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258 { |
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259 QMouseEvent *m = dynamic_cast<QMouseEvent *> (e); |
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260 |
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261 if (m->button () & Qt::RightButton) |
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262 override_return = true; |
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263 |
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264 else if (! list->indexAt (m->pos ()).isValid ()) |
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265 { |
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266 list->setCurrentRow (list->count () - 1); |
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267 override_return = true; |
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268 } |
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269 |
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270 if (m_selectionChanged) |
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271 sendSelectionChange (); |
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272 m_selectionChanged = false; |
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273 |
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274 break; |
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275 } |
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276 default: |
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277 break; |
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278 |
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279 } |
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280 return BaseControl::eventFilter (watched, e) || override_return; |
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281 } |
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282 } |
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283 } |