Mercurial > octave

annotate libgui/graphics/ListBoxControl.cc @ 23447:db1fdf4384dd

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maint: Use convention "static_cast<void *>" for casting of pointers. * Backend.cc, BaseControl.cc, ButtonControl.cc, ButtonGroup.cc, Canvas.cc, Container.cc, ContextMenu.cc, Figure.cc, ListBoxControl.cc, Menu.cc, MouseModeActionGroup.cc, Object.cc, Object.h, Panel.cc, RadioButtonControl.cc, ToggleButtonControl.cc, ToolBar.cc, ToolBarButton.cc, annotation-dialog.cc, file-editor-tab.cc, main-window.cc, webinfo.cc, data.cc, ft-text-renderer.cc, graphics.in.h, zfstream.h, __init_fltk__.cc, __osmesa_print__.cc, gzip.cc, ov-java.cc, bp-table.cc, oct-time.cc, lo-utils.cc, oct-base64.cc, url-transfer.cc: Use convention "static_cast<void *>" for casting of pointers.
author Rik <rik@octave.org>
date Thu, 27 Apr 2017 10:04:31 -0700
parents 092078913d54
children c763214a8260
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 /*
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2
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3 Copyright (C) 2011-2017 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
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9 the Free Software Foundation; either version 3 of the License, or
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10 (at your 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
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13 WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 GNU General Public License 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 #if defined (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 #include <QEvent>
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29 #include <QMouseEvent>
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30
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31 #include "Container.h"
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32 #include "ListBoxControl.h"
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33 #include "QtHandlesUtils.h"
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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 static void
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39 updateSelection (QListWidget* list, const Matrix& value)
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40 {
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41 octave_idx_type n = value.numel ();
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42 int lc = list->count ();
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43
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44 list->clearSelection ();
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45
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46 for (octave_idx_type i = 0; i < n; i++)
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47 {
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48 int idx = octave::math::round (value(i));
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49
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50 if (1 <= idx && idx <= lc)
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51 {
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52 list->item (idx-1)->setSelected (true);
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53 list->scrollToItem (list->item (idx-1));
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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 ListBoxControl*
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68 ListBoxControl::create (const graphics_object& go)
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69 {
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70 Object* parent = Object::parentObject (go);
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71
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72 if (parent)
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73 {
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74 Container* container = parent->innerContainer ();
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75
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76 if (container)
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77 return new ListBoxControl (go, new QListWidget (container));
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78 }
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79
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80 return 0;
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81 }
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82
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83 ListBoxControl::ListBoxControl (const graphics_object& go, QListWidget* list)
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84 : BaseControl (go, list), m_blockCallback (false), m_selectionChanged (false)
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85 {
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86 uicontrol::properties& up = properties<uicontrol> ();
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87
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88 list->addItems (Utils::fromStringVector (up.get_string_vector ()));
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89 if ((up.get_max () - up.get_min ()) > 1)
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90 list->setSelectionMode (QAbstractItemView::ExtendedSelection);
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91 else
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92 list->setSelectionMode (QAbstractItemView::SingleSelection);
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93 Matrix value = up.get_value ().matrix_value ();
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94 if (value.numel () > 0)
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95 {
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96 octave_idx_type n = value.numel ();
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97 int lc = list->count ();
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98
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99 for (octave_idx_type i = 0; i < n; i++)
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100 {
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101 int idx = octave::math::round (value(i));
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102
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103 if (1 <= idx && idx <= lc)
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104 {
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105 list->item (idx-1)->setSelected (true);
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106 list->scrollToItem (list->item (idx-1));
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107 if (i == 0 && (list->selectionMode ()
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108 == QAbstractItemView::SingleSelection))
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109 break;
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110 }
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111 }
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112 }
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113
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114 list->viewport ()->installEventFilter (this);
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115
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116 connect (list, SIGNAL (itemSelectionChanged (void)),
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117 SLOT (itemSelectionChanged (void)));
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118 connect (list, SIGNAL (activated (const QModelIndex &)),
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119 SLOT (itemActivated (const QModelIndex &)));
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120 connect (list, SIGNAL (itemPressed (QListWidgetItem*)),
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121 SLOT (itemPressed (QListWidgetItem*)));
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122 }
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123
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124 ListBoxControl::~ListBoxControl (void)
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125 { }
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126
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127 void
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128 ListBoxControl::update (int pId)
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129 {
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130 uicontrol::properties& up = properties<uicontrol> ();
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131 QListWidget* list = qWidget<QListWidget> ();
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132
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133 switch (pId)
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134 {
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135 case uicontrol::properties::ID_STRING:
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136 m_blockCallback = true;
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137 list->clear ();
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138 list->addItems (Utils::fromStringVector (up.get_string_vector ()));
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139 updateSelection (list, up.get_value ().matrix_value ());
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140 m_blockCallback = false;
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141 break;
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142
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143 case uicontrol::properties::ID_MIN:
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144
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145 case uicontrol::properties::ID_MAX:
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146 if ((up.get_max () - up.get_min ()) > 1)
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147 list->setSelectionMode (QAbstractItemView::ExtendedSelection);
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148 else
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149 list->setSelectionMode (QAbstractItemView::SingleSelection);
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150 break;
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151
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152 case uicontrol::properties::ID_VALUE:
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153 m_blockCallback = true;
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154 updateSelection (list, up.get_value ().matrix_value ());
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155 m_blockCallback = false;
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156 break;
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157
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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 void
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165 ListBoxControl::sendSelectionChange ()
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166 {
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167 if (! m_blockCallback)
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168 {
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169 QListWidget* list = qWidget<QListWidget> ();
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170
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171 QModelIndexList l = list->selectionModel ()->selectedIndexes ();
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172 Matrix value (dim_vector (1, l.size ()));
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173 int i = 0;
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174
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175 foreach (const QModelIndex& idx, l)
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176 value(i++) = idx.row () + 1;
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177
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178 gh_manager::post_set (m_handle, "value", octave_value (value), false);
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179 gh_manager::post_callback (m_handle, "callback");
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180 }
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181
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182 m_selectionChanged = false;
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183 }
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184
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185 void
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186 ListBoxControl::itemSelectionChanged (void)
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187 {
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188 if (! m_blockCallback)
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189 m_selectionChanged = true;
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190 }
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191
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192 void
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193 ListBoxControl::itemActivated (const QModelIndex &)
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194 {
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195 m_selectionChanged = true;
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196 }
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197 void
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198 ListBoxControl::itemPressed (QListWidgetItem*)
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199 {
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200 m_selectionChanged = true;
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201 }
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202
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203 bool
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204 ListBoxControl::eventFilter (QObject* watched, QEvent* e)
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205 {
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206 // listbox change
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207 if (watched == m_qobject)
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208 {
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209 switch (e->type ())
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210 {
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211 case QEvent::KeyRelease:
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212 if (m_selectionChanged)
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213 sendSelectionChange ();
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214 m_selectionChanged = false;
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215 break;
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216
22726
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217 default:
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218 break;
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219 }
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220
22726
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221 return Object::eventFilter (watched, e);
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222 }
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223 // listbox viewport
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224 else
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225 {
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226 bool override_return = false;
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227 QListWidget* list = qWidget<QListWidget> ();
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228
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229 switch (e->type ())
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230 {
22737
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diff changeset
231 case QEvent::MouseButtonPress:
22726
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232 {
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diff changeset
233 QMouseEvent* m = dynamic_cast<QMouseEvent *> (e);
22726
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diff changeset
234
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diff changeset
235 if (m->button () & Qt::RightButton)
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236 override_return = true;
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237 else
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238 {
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diff changeset
239 if (! list->indexAt (m->pos ()).isValid ())
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diff changeset
240 override_return = true;
22726
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241 m_selectionChanged = true;
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diff changeset
242 }
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diff changeset
243 break;
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diff changeset
244 }
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diff changeset
245 case QEvent::MouseButtonRelease:
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diff changeset
246 {
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diff changeset
247 QMouseEvent* m = dynamic_cast<QMouseEvent *> (e);
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diff changeset
248
22726
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diff changeset
249 if (m->button () & Qt::RightButton)
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250 override_return = true;
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251
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diff changeset
252 else if (! list->indexAt (m->pos ()).isValid ())
22726
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diff changeset
253 {
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diff changeset
254 list->setCurrentRow (list->count () - 1);
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diff changeset
255 override_return = true;
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diff changeset
256 }
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diff changeset
257
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diff changeset
258 if (m_selectionChanged)
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diff changeset
259 sendSelectionChange ();
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diff changeset
260 m_selectionChanged = false;
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diff changeset
261
22726
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diff changeset
262 break;
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diff changeset
263 }
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diff changeset
264 default:
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diff changeset
265 break;
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diff changeset
266
22726
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diff changeset
267 }
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diff changeset
268 return BaseControl::eventFilter (watched, e) || override_return;
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diff changeset
269 }
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diff changeset
270 }
22413
8758addcf265 maint: Remove ';' at end of namespace declaration.
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diff changeset
271 }