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annotate libgui/graphics/ListBoxControl.cc @ 18568:49877d3be064 gui-release

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update copyright notices for new QtHandles code
author John W. Eaton <jwe@octave.org>
date Thu, 20 Feb 2014 14:58:56 -0500
parents 2e7cad6f180c
children 523878f76518
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1 /*
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2
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3 Copyright (C) 2011-2014 Michael Goffioul
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4
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5 This file is part of Octave.
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6
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7 Octave is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 3 of the License, or (at your
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10 option) any later version.
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11
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12 Octave is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Octave; see the file COPYING. If not, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #ifdef HAVE_CONFIG_H
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24 #include <config.h>
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25 #endif
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26
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27 #include <QListWidget>
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28
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29 #include "Container.h"
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30 #include "ListBoxControl.h"
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31 #include "Utils.h"
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32
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33 //////////////////////////////////////////////////////////////////////////////
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34
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35 namespace QtHandles
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36 {
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37
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38 //////////////////////////////////////////////////////////////////////////////
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39
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40 static void updateSelection (QListWidget* list, const Matrix& value)
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41 {
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42 octave_idx_type n = value.numel ();
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43 int lc = list->count ();
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44
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45 list->clearSelection ();
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46
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47 for (octave_idx_type i = 0; i < n; i++)
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48 {
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49 int idx = xround (value(i));
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50
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51 if (1 <= idx && idx <= lc)
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52 {
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53 list->item (idx-1)->setSelected (true);
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54 if (i == 0
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55 && list->selectionMode () == QAbstractItemView::SingleSelection)
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56 break;
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57 }
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58 else
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59 {
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60 // Invalid selection.
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61 list->clearSelection ();
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62 break;
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63 }
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64 }
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65 }
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66
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67 //////////////////////////////////////////////////////////////////////////////
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68
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69 ListBoxControl* ListBoxControl::create (const graphics_object& go)
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70 {
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71 Object* parent = Object::parentObject (go);
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72
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73 if (parent)
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74 {
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75 Container* container = parent->innerContainer ();
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76
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77 if (container)
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78 return new ListBoxControl (go, new QListWidget (container));
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79 }
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80
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81 return 0;
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82 }
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83
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84 //////////////////////////////////////////////////////////////////////////////
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85
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86 ListBoxControl::ListBoxControl (const graphics_object& go, QListWidget* list)
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87 : BaseControl (go, list), m_blockCallback (false)
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88 {
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89 uicontrol::properties& up = properties<uicontrol> ();
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90
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91 list->addItems (Utils::fromStringVector (up.get_string_vector ()));
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92 if ((up.get_max () - up.get_min ()) > 1)
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93 list->setSelectionMode (QAbstractItemView::ExtendedSelection);
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94 else
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95 list->setSelectionMode (QAbstractItemView::SingleSelection);
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96 Matrix value = up.get_value ().matrix_value ();
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97 if (value.numel () > 0)
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98 {
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99 octave_idx_type n = value.numel ();
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100 int lc = list->count ();
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101
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102 for (octave_idx_type i = 0; i < n; i++)
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103 {
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104 int idx = xround (value(i));
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105
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106 if (1 <= idx && idx <= lc)
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107 {
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108 list->item (idx-1)->setSelected (true);
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109 if (i == 0
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110 && list->selectionMode () ==
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111 QAbstractItemView::SingleSelection)
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112 break;
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113 }
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114 }
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115 }
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116
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117 list->removeEventFilter (this);
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118 list->viewport ()->installEventFilter (this);
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119
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120 connect (list, SIGNAL (itemSelectionChanged (void)),
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121 SLOT (itemSelectionChanged (void)));
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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 ListBoxControl::~ListBoxControl (void)
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127 {
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128 }
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129
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130 //////////////////////////////////////////////////////////////////////////////
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131
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132 void ListBoxControl::update (int pId)
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133 {
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134 uicontrol::properties& up = properties<uicontrol> ();
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135 QListWidget* list = qWidget<QListWidget> ();
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136
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137 switch (pId)
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138 {
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139 case uicontrol::properties::ID_STRING:
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140 m_blockCallback = true;
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141 list->clear ();
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142 list->addItems (Utils::fromStringVector (up.get_string_vector ()));
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143 updateSelection (list, up.get_value ().matrix_value ());
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144 m_blockCallback = false;
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145 break;
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146 case uicontrol::properties::ID_MIN:
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147 case uicontrol::properties::ID_MAX:
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148 if ((up.get_max () - up.get_min ()) > 1)
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149 list->setSelectionMode (QAbstractItemView::ExtendedSelection);
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150 else
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151 list->setSelectionMode (QAbstractItemView::SingleSelection);
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152 break;
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153 case uicontrol::properties::ID_VALUE:
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154 m_blockCallback = true;
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155 updateSelection (list, up.get_value ().matrix_value ());
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156 m_blockCallback = false;
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157 break;
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158 default:
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159 BaseControl::update (pId);
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160 break;
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161 }
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162 }
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163
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164 //////////////////////////////////////////////////////////////////////////////
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165
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166 void ListBoxControl::itemSelectionChanged (void)
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167 {
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168 if (! m_blockCallback)
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169 {
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170 QListWidget* list = qWidget<QListWidget> ();
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171
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172 QModelIndexList l = list->selectionModel ()->selectedIndexes ();
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173 Matrix value (dim_vector (1, l.size ()));
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174 int i = 0;
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175
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176 foreach (const QModelIndex& idx, l)
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177 value(i++) = (idx.row () + 1);
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178
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179 gh_manager::post_set (m_handle, "value", octave_value (value), false);
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180 gh_manager::post_callback (m_handle, "callback");
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181 }
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182 }
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183
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184 //////////////////////////////////////////////////////////////////////////////
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185
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186 }; // namespace QtHandles