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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the Qt3Support module of the Qt Toolkit. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 #include "qglobal.h" |
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43 #if defined(Q_CC_BOR) |
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44 // needed for qsort() because of a std namespace problem on Borland |
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45 #include "qplatformdefs.h" |
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46 #endif |
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47 |
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48 #include "q3listbox.h" |
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49 #ifndef QT_NO_LISTBOX |
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50 #include "qapplication.h" |
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51 #include "qevent.h" |
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52 #include "qfontmetrics.h" |
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53 #include "qpainter.h" |
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54 #include "qpixmap.h" |
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55 #include "qstringlist.h" |
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56 #include "qstyle.h" |
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57 #include "qstyleoption.h" |
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58 #include "qtimer.h" |
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59 #include "qvector.h" |
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60 #include "qpointer.h" |
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61 #ifndef QT_NO_ACCESSIBILITY |
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62 #include "qaccessible.h" |
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63 #endif |
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64 |
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65 #include <stdlib.h> |
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66 |
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67 QT_BEGIN_NAMESPACE |
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68 |
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69 class Q3ListBoxPrivate |
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70 { |
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71 public: |
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72 Q3ListBoxPrivate(Q3ListBox *lb): |
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73 head(0), last(0), cache(0), cacheIndex(-1), current(0), |
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74 highlighted(0), tmpCurrent(0), columnPos(1), rowPos(1), rowPosCache(0), |
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75 columnPosOne(0), rowMode(Q3ListBox::FixedNumber), |
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76 columnMode(Q3ListBox::FixedNumber), numRows(1), numColumns(1), |
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77 currentRow(0), currentColumn(0), |
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78 mousePressRow(-1), mousePressColumn(-1), |
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79 mouseMoveRow(-1), mouseMoveColumn(-1), mouseInternalPress(false), |
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80 scrollTimer(0), updateTimer(0), visibleTimer(0), |
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81 selectionMode(Q3ListBox::Single), |
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82 count(0), |
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83 listBox(lb), currInputString(QString()), |
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84 rowModeWins(false), |
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85 ignoreMoves(false), |
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86 layoutDirty(true), |
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87 mustPaintAll(true), |
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88 dragging(false), |
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89 dirtyDrag (false), |
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90 variableHeight(true /* !!! ### false */), |
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91 variableWidth(false), |
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92 inMenuMode(false) |
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93 {} |
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94 int findItemByName(int item, const QString &text); |
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95 ~Q3ListBoxPrivate(); |
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96 |
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97 Q3ListBoxItem * head, *last, *cache; |
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98 int cacheIndex; |
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99 Q3ListBoxItem * current, *highlighted, *tmpCurrent; |
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100 |
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101 QVector<int> columnPos; |
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102 QVector<int> rowPos; |
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103 int rowPosCache; |
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104 int columnPosOne; |
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105 |
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106 Q3ListBox::LayoutMode rowMode; |
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107 Q3ListBox::LayoutMode columnMode; |
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108 int numRows; |
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109 int numColumns; |
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110 |
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111 int currentRow; |
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112 int currentColumn; |
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113 int mousePressRow; |
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114 int mousePressColumn; |
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115 int mouseMoveRow; |
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116 int mouseMoveColumn; |
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117 bool mouseInternalPress; |
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118 |
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119 QTimer * scrollTimer; |
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120 QTimer * updateTimer; |
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121 QTimer * visibleTimer; |
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122 QTimer * resizeTimer; |
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123 |
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124 QPoint scrollPos; |
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125 |
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126 Q3ListBox::SelectionMode selectionMode; |
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127 |
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128 int count; |
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129 |
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130 |
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131 Q3ListBox *listBox; |
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132 QString currInputString; |
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133 QTimer *inputTimer; |
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134 |
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135 Q3ListBoxItem *pressedItem, *selectAnchor; |
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136 |
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137 uint select :1; |
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138 uint pressedSelected :1; |
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139 uint rowModeWins :1; |
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140 uint ignoreMoves :1; |
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141 uint clearing :1; |
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142 uint layoutDirty :1; |
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143 uint mustPaintAll :1; |
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144 uint dragging :1; |
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145 uint dirtyDrag :1; |
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146 uint variableHeight :1; |
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147 uint variableWidth :1; |
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148 uint inMenuMode :1; |
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149 |
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150 QRect *rubber; |
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151 |
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152 struct SortableItem { |
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153 Q3ListBoxItem *item; |
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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 Q3ListBoxPrivate::~Q3ListBoxPrivate() |
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159 { |
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160 Q_ASSERT(!head); |
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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 \class Q3ListBoxItem |
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166 \brief The Q3ListBoxItem class is the base class of all list box items. |
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167 |
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168 \compat |
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169 |
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170 This class is an abstract base class used for all list box items. |
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171 If you need to insert customized items into a Q3ListBox you must |
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172 inherit this class and reimplement paint(), height() and width(). |
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173 |
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174 \sa Q3ListBox |
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175 */ |
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176 |
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177 /*! |
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178 Constructs an empty list box item in the list box \a listbox. |
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179 */ |
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180 |
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181 Q3ListBoxItem::Q3ListBoxItem(Q3ListBox* listbox) |
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182 { |
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183 lbox = listbox; |
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184 s = false; |
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185 dirty = true; |
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186 custom_highlight = false; |
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187 selectable = true; |
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188 p = n = 0; |
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189 |
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190 if (listbox) |
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191 listbox->insertItem(this); |
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192 } |
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193 |
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194 /*! |
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195 Constructs an empty list box item in the list box \a listbox and |
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196 inserts it after the item \a after or at the beginning if \a after |
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197 is 0. |
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198 */ |
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199 |
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200 Q3ListBoxItem::Q3ListBoxItem(Q3ListBox* listbox, Q3ListBoxItem *after) |
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201 { |
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202 lbox = listbox; |
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203 s = false; |
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204 dirty = true; |
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205 custom_highlight = false; |
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206 selectable = true; |
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207 p = n = 0; |
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208 |
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209 if (listbox) |
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210 listbox->insertItem(this, after); |
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211 } |
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212 |
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213 |
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214 /*! |
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215 Destroys the list box item. |
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216 */ |
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217 |
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218 Q3ListBoxItem::~Q3ListBoxItem() |
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219 { |
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220 if (lbox) |
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221 lbox->takeItem(this); |
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222 } |
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223 |
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224 |
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225 /*! |
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226 Defines whether the list box item is responsible for drawing |
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227 itself in a highlighted state when being selected. |
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228 |
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229 If \a b is false (the default), the list box will draw some |
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230 default highlight indicator before calling paint(). |
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231 |
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232 \sa isSelected(), paint() |
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233 */ |
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234 void Q3ListBoxItem::setCustomHighlighting(bool b) |
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235 { |
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236 custom_highlight = b; |
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237 } |
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238 |
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239 /*! |
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240 \fn void Q3ListBoxItem::paint(QPainter *p) |
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241 |
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242 Implement this function to draw your item. The painter, \a p, is |
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243 already open for painting. |
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244 |
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245 \sa height(), width() |
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246 */ |
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247 |
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248 /*! |
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249 \fn int Q3ListBoxItem::width(const Q3ListBox* lb) const |
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250 |
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251 Reimplement this function to return the width of your item. The \a |
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252 lb parameter is the same as listBox() and is provided for |
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253 convenience and compatibility. |
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254 |
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255 The default implementation returns |
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256 \l{QApplication::globalStrut()}'s width. |
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257 |
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258 \sa paint(), height() |
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259 */ |
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260 int Q3ListBoxItem::width(const Q3ListBox*) const |
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261 { |
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262 return QApplication::globalStrut().width(); |
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263 } |
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264 |
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265 /*! |
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266 \fn int Q3ListBoxItem::height(const Q3ListBox* lb) const |
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267 |
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268 Implement this function to return the height of your item. The \a |
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269 lb parameter is the same as listBox() and is provided for |
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270 convenience and compatibility. |
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271 |
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272 The default implementation returns |
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273 \l{QApplication::globalStrut()}'s height. |
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274 |
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275 \sa paint(), width() |
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276 */ |
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277 int Q3ListBoxItem::height(const Q3ListBox*) const |
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278 { |
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279 return QApplication::globalStrut().height(); |
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280 } |
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281 |
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282 |
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283 /*! |
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284 Returns the text of the item. This text is also used for sorting. |
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285 |
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286 \sa setText() |
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287 */ |
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288 QString Q3ListBoxItem::text() const |
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289 { |
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290 return txt; |
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291 } |
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292 |
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293 /*! |
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294 Returns the pixmap associated with the item, or 0 if there isn't |
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295 one. |
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296 |
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297 The default implementation returns 0. |
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298 */ |
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299 const QPixmap *Q3ListBoxItem::pixmap() const |
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300 { |
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301 return 0; |
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302 } |
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303 |
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304 /*! \fn void Q3ListBoxItem::setSelectable(bool b) |
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305 |
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306 If \a b is true (the default) then this item can be selected by |
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307 the user; otherwise this item cannot be selected by the user. |
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308 |
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309 \sa isSelectable() |
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310 */ |
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311 |
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312 /*! \fn bool Q3ListBoxItem::isSelectable() const |
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313 |
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314 Returns true if this item is selectable (the default); otherwise |
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315 returns false. |
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316 |
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317 \sa setSelectable() |
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318 */ |
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319 |
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320 |
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321 /*! |
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322 \fn void Q3ListBoxItem::setText(const QString &text) |
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323 |
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324 Sets the text of the Q3ListBoxItem to \a text. This \a text is also |
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325 used for sorting. The text is not shown unless explicitly drawn in |
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326 paint(). |
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327 |
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328 \sa text() |
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329 */ |
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330 |
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331 |
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332 /*! |
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333 \class Q3ListBoxText |
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334 \brief The Q3ListBoxText class provides list box items that display text. |
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335 |
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336 \compat |
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337 |
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338 The text is drawn in the widget's current font. If you need |
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339 several different fonts, you must implement your own subclass of |
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340 Q3ListBoxItem. |
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341 |
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342 \sa Q3ListBox, Q3ListBoxItem |
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343 */ |
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344 |
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345 |
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346 /*! |
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347 Constructs a list box item in list box \a listbox showing the text |
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348 \a text. |
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349 */ |
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350 Q3ListBoxText::Q3ListBoxText(Q3ListBox *listbox, const QString &text) |
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351 :Q3ListBoxItem(listbox) |
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352 { |
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353 setText(text); |
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354 } |
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355 |
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356 /*! |
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357 Constructs a list box item showing the text \a text. |
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358 */ |
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359 |
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360 Q3ListBoxText::Q3ListBoxText(const QString &text) |
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361 :Q3ListBoxItem() |
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362 { |
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363 setText(text); |
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364 } |
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365 |
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366 /*! |
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367 Constructs a list box item in list box \a listbox showing the text |
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368 \a text. The item is inserted after the item \a after, or at the |
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369 beginning if \a after is 0. |
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370 */ |
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371 |
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372 Q3ListBoxText::Q3ListBoxText(Q3ListBox* listbox, const QString &text, Q3ListBoxItem *after) |
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373 : Q3ListBoxItem(listbox, after) |
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374 { |
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375 setText(text); |
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376 } |
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377 |
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378 /*! |
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379 Destroys the item. |
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380 */ |
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381 |
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382 Q3ListBoxText::~Q3ListBoxText() |
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383 { |
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384 } |
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385 |
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386 /*! |
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387 Draws the text using \a painter. |
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388 */ |
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389 |
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390 void Q3ListBoxText::paint(QPainter *painter) |
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391 { |
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392 int itemHeight = height(listBox()); |
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393 QFontMetrics fm = painter->fontMetrics(); |
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394 int yPos = ((itemHeight - fm.height()) / 2) + fm.ascent(); |
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395 painter->drawText(3, yPos, text()); |
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396 } |
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397 |
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398 /*! |
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399 Returns the height of a line of text in list box \a lb. |
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400 |
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401 \sa paint(), width() |
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402 */ |
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403 |
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404 int Q3ListBoxText::height(const Q3ListBox* lb) const |
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405 { |
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406 int h = lb ? lb->fontMetrics().lineSpacing() + 2 : 0; |
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407 return qMax(h, QApplication::globalStrut().height()); |
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408 } |
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409 |
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410 /*! |
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411 Returns the width of this line in list box \a lb. |
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412 |
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413 \sa paint(), height() |
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414 */ |
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415 |
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416 int Q3ListBoxText::width(const Q3ListBox* lb) const |
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417 { |
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418 int w = lb ? lb->fontMetrics().width(text()) + 6 : 0; |
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419 return qMax(w, QApplication::globalStrut().width()); |
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420 } |
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421 |
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422 /*! |
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423 \fn int Q3ListBoxText::rtti() const |
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424 |
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425 \reimp |
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426 |
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427 Returns 1. |
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428 |
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429 Make your derived classes return their own values for rtti(), and |
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430 you can distinguish between listbox items. You should use values |
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431 greater than 1000 preferably a large random number, to allow for |
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432 extensions to this class. |
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433 */ |
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434 |
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435 int Q3ListBoxText::rtti() const |
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436 { |
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437 return RTTI; |
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438 } |
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439 |
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440 /*! |
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441 \class Q3ListBoxPixmap |
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442 \brief The Q3ListBoxPixmap class provides list box items with a |
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443 pixmap and optional text. |
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444 |
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445 \compat |
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446 |
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447 Items of this class are drawn with the pixmap on the left with the |
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448 optional text to the right of the pixmap. |
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449 |
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450 \sa Q3ListBox, Q3ListBoxItem |
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451 */ |
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452 |
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453 |
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454 /*! |
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455 Constructs a new list box item in list box \a listbox showing the |
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456 pixmap \a pixmap. |
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457 */ |
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458 |
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459 Q3ListBoxPixmap::Q3ListBoxPixmap(Q3ListBox* listbox, const QPixmap &pixmap) |
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460 : Q3ListBoxItem(listbox) |
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461 { |
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462 pm = pixmap; |
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463 } |
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464 |
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465 /*! |
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466 Constructs a new list box item showing the pixmap \a pixmap. |
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467 */ |
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468 |
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469 Q3ListBoxPixmap::Q3ListBoxPixmap(const QPixmap &pixmap) |
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470 : Q3ListBoxItem() |
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471 { |
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472 pm = pixmap; |
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473 } |
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474 |
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475 /*! |
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476 Constructs a new list box item in list box \a listbox showing the |
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477 pixmap \a pixmap. The item gets inserted after the item \a after, |
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478 or at the beginning if \a after is 0. |
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479 */ |
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480 |
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481 Q3ListBoxPixmap::Q3ListBoxPixmap(Q3ListBox* listbox, const QPixmap &pixmap, Q3ListBoxItem *after) |
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482 : Q3ListBoxItem(listbox, after) |
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483 { |
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484 pm = pixmap; |
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485 } |
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486 |
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487 |
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488 /*! |
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489 Destroys the item. |
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490 */ |
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491 |
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492 Q3ListBoxPixmap::~Q3ListBoxPixmap() |
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493 { |
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494 } |
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495 |
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496 |
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497 /*! |
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498 Constructs a new list box item in list box \a listbox showing the |
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499 pixmap \a pix and the text \a text. |
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500 */ |
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501 Q3ListBoxPixmap::Q3ListBoxPixmap(Q3ListBox* listbox, const QPixmap &pix, const QString& text) |
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502 : Q3ListBoxItem(listbox) |
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503 { |
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504 pm = pix; |
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505 setText(text); |
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506 } |
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507 |
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508 /*! |
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509 Constructs a new list box item showing the pixmap \a pix and the |
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510 text to \a text. |
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511 */ |
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512 Q3ListBoxPixmap::Q3ListBoxPixmap(const QPixmap & pix, const QString& text) |
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513 : Q3ListBoxItem() |
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514 { |
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515 pm = pix; |
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516 setText(text); |
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517 } |
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518 |
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519 /*! |
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520 Constructs a new list box item in list box \a listbox showing the |
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521 pixmap \a pix and the string \a text. The item gets inserted after |
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522 the item \a after, or at the beginning if \a after is 0. |
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523 */ |
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524 Q3ListBoxPixmap::Q3ListBoxPixmap(Q3ListBox* listbox, const QPixmap & pix, const QString& text, |
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525 Q3ListBoxItem *after) |
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526 : Q3ListBoxItem(listbox, after) |
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527 { |
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528 pm = pix; |
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529 setText(text); |
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530 } |
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531 |
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532 /*! |
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533 \fn const QPixmap *Q3ListBoxPixmap::pixmap() const |
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534 |
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535 Returns the pixmap associated with the item. |
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536 */ |
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537 |
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538 |
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539 /*! |
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540 Draws the pixmap using \a painter. |
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541 */ |
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542 |
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543 void Q3ListBoxPixmap::paint(QPainter *painter) |
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544 { |
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545 int itemHeight = height(listBox()); |
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546 int yPos; |
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547 |
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548 const QPixmap *pm = pixmap(); |
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549 if (pm && ! pm->isNull()) { |
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550 yPos = (itemHeight - pm->height()) / 2; |
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551 painter->drawPixmap(3, yPos, *pm); |
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552 } |
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553 |
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554 if (!text().isEmpty()) { |
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555 QFontMetrics fm = painter->fontMetrics(); |
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556 yPos = ((itemHeight - fm.height()) / 2) + fm.ascent(); |
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557 painter->drawText(pm->width() + 5, yPos, text()); |
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558 } |
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559 } |
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560 |
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561 /*! |
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562 Returns the height of the pixmap in list box \a lb. |
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563 |
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564 \sa paint(), width() |
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565 */ |
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566 |
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567 int Q3ListBoxPixmap::height(const Q3ListBox* lb) const |
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568 { |
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569 int h; |
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570 if (text().isEmpty()) |
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571 h = pm.height(); |
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572 else |
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573 h = qMax(pm.height(), lb->fontMetrics().lineSpacing() + 2); |
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574 return qMax(h, QApplication::globalStrut().height()); |
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575 } |
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576 |
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577 /*! |
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578 Returns the width of the pixmap plus some margin in list box \a lb. |
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579 |
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580 \sa paint(), height() |
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581 */ |
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582 |
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583 int Q3ListBoxPixmap::width(const Q3ListBox* lb) const |
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584 { |
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585 if (text().isEmpty()) |
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586 return qMax(pm.width() + 6, QApplication::globalStrut().width()); |
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587 return qMax(pm.width() + lb->fontMetrics().width(text()) + 6, |
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588 QApplication::globalStrut().width()); |
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589 } |
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590 |
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591 /*! |
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592 \fn int Q3ListBoxPixmap::rtti() const |
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593 |
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594 \reimp |
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595 |
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596 Returns 2. |
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597 |
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598 Make your derived classes return their own values for rtti(), and |
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599 you can distinguish between listbox items. You should use values |
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600 greater than 1000 preferably a large random number, to allow for |
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601 extensions to this class. |
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602 */ |
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603 |
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604 int Q3ListBoxPixmap::rtti() const |
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605 { |
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606 return RTTI; |
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607 } |
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608 |
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609 /*! |
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610 \class Q3ListBox |
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611 \brief The Q3ListBox widget provides a list of selectable, read-only items. |
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612 |
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613 \compat |
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614 |
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615 This is typically a single-column list in which either no item or |
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616 one item is selected, but it can also be used in many other ways. |
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617 |
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618 Q3ListBox will add scroll bars as necessary, but it isn't intended |
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619 for \e really big lists. If you want more than a few thousand |
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620 items, it's probably better to use a different widget mainly |
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621 because the scroll bars won't provide very good navigation, but |
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622 also because Q3ListBox may become slow with huge lists. (See |
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623 Q3ListView and Q3Table for possible alternatives.) |
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624 |
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625 There are a variety of selection modes described in the |
|
626 Q3ListBox::SelectionMode documentation. The default is \l Single |
|
627 selection mode, but you can change it using setSelectionMode(). |
|
628 (setMultiSelection() is still provided for compatibility with Qt |
|
629 1.x. We recommend using setSelectionMode() in all code.) |
|
630 |
|
631 Because Q3ListBox offers multiple selection it must display |
|
632 keyboard focus and selection state separately. Therefore there are |
|
633 functions both to set the selection state of an item, i.e. |
|
634 setSelected(), and to set which item displays keyboard focus, i.e. |
|
635 setCurrentItem(). |
|
636 |
|
637 The list box normally arranges its items in a single column and |
|
638 adds a vertical scroll bar if required. It is possible to have a |
|
639 different fixed number of columns (setColumnMode()), or as many |
|
640 columns as will fit in the list box's assigned screen space |
|
641 (setColumnMode(FitToWidth)), or to have a fixed number of rows |
|
642 (setRowMode()) or as many rows as will fit in the list box's |
|
643 assigned screen space (setRowMode(FitToHeight)). In all these |
|
644 cases Q3ListBox will add scroll bars, as appropriate, in at least |
|
645 one direction. |
|
646 |
|
647 If multiple rows are used, each row can be as high as necessary |
|
648 (the normal setting), or you can request that all items will have |
|
649 the same height by calling setVariableHeight(false). The same |
|
650 applies to a column's width, see setVariableWidth(). |
|
651 |
|
652 The Q3ListBox's items are Q3ListBoxItem objects. Q3ListBox provides |
|
653 methods to insert new items as strings, as pixmaps, and as |
|
654 Q3ListBoxItem * (insertItem() with various arguments), and to |
|
655 replace an existing item with a new string, pixmap or Q3ListBoxItem |
|
656 (changeItem() with various arguments). You can also remove items |
|
657 singly with removeItem() or clear() the entire list box. Note that |
|
658 if you create a Q3ListBoxItem yourself and insert it, Q3ListBox |
|
659 takes ownership of the item. |
|
660 |
|
661 You can also create a Q3ListBoxItem, such as Q3ListBoxText or |
|
662 Q3ListBoxPixmap, with the list box as first parameter. The item |
|
663 will then append itself. When you delete an item it is |
|
664 automatically removed from the list box. |
|
665 |
|
666 The list of items can be arbitrarily large; Q3ListBox will add |
|
667 scroll bars if necessary. Q3ListBox can display a single-column |
|
668 (the common case) or multiple-columns, and offers both single and |
|
669 multiple selection. Q3ListBox does not support multiple-column |
|
670 items (but Q3ListView and Q3Table do), or tree hierarchies (but |
|
671 Q3ListView does). |
|
672 |
|
673 The list box items can be accessed both as Q3ListBoxItem objects |
|
674 (recommended) and using integer indexes (the original Q3ListBox |
|
675 implementation used an array of strings internally, and the API |
|
676 still supports this mode of operation). Everything can be done |
|
677 using the new objects, and most things can be done using indexes. |
|
678 |
|
679 Each item in a Q3ListBox contains a Q3ListBoxItem. One of the items |
|
680 can be the current item. The currentChanged() signal and the |
|
681 highlighted() signal are emitted when a new item becomes current, |
|
682 e.g. because the user clicks on it or Q3ListBox::setCurrentItem() |
|
683 is called. The selected() signal is emitted when the user |
|
684 double-clicks on an item or presses Enter on the current item. |
|
685 |
|
686 If the user does not select anything, no signals are emitted and |
|
687 currentItem() returns -1. |
|
688 |
|
689 A list box has Qt::WheelFocus as a default focusPolicy(), i.e. it |
|
690 can get keyboard focus by tabbing, clicking and through the use of |
|
691 the mouse wheel. |
|
692 |
|
693 New items can be inserted using insertItem(), insertStrList() or |
|
694 insertStringList(). |
|
695 |
|
696 By default, vertical and horizontal scroll bars are added and |
|
697 removed as necessary. setHScrollBarMode() and setVScrollBarMode() |
|
698 can be used to change this policy. |
|
699 |
|
700 If you need to insert types other than strings and pixmaps, you |
|
701 must define new classes which inherit Q3ListBoxItem. |
|
702 |
|
703 \warning The list box assumes ownership of all list box items and |
|
704 will delete them when it does not need them any more. |
|
705 |
|
706 \inlineimage qlistbox-m.png Screenshot in Motif style |
|
707 \inlineimage qlistbox-w.png Screenshot in Windows style |
|
708 |
|
709 \sa Q3ListView, QComboBox, QButtonGroup |
|
710 */ |
|
711 |
|
712 /*! |
|
713 \enum Q3ListBox::SelectionMode |
|
714 |
|
715 This enumerated type is used by Q3ListBox to indicate how it reacts |
|
716 to selection by the user. |
|
717 |
|
718 \value Single When the user selects an item, any already-selected |
|
719 item becomes unselected and the user cannot unselect the selected |
|
720 item. This means that the user can never clear the selection, even |
|
721 though the selection may be cleared by the application programmer |
|
722 using Q3ListBox::clearSelection(). |
|
723 |
|
724 \value Multi When the user selects an item the selection status |
|
725 of that item is toggled and the other items are left alone. |
|
726 |
|
727 \value Extended When the user selects an item the selection is |
|
728 cleared and the new item selected. However, if the user presses |
|
729 the Ctrl key when clicking on an item, the clicked item gets |
|
730 toggled and all other items are left untouched. And if the user |
|
731 presses the Shift key while clicking on an item, all items between |
|
732 the current item and the clicked item get selected or unselected, |
|
733 depending on the state of the clicked item. Also, multiple items |
|
734 can be selected by dragging the mouse while the left mouse button |
|
735 is kept pressed. |
|
736 |
|
737 \value NoSelection Items cannot be selected. |
|
738 |
|
739 In other words, \c Single is a real single-selection list box, \c |
|
740 Multi is a real multi-selection list box, \c Extended is a list |
|
741 box in which users can select multiple items but usually want to |
|
742 select either just one or a range of contiguous items, and \c |
|
743 NoSelection is for a list box where the user can look but not |
|
744 touch. |
|
745 */ |
|
746 |
|
747 |
|
748 /*! |
|
749 \enum Q3ListBox::LayoutMode |
|
750 |
|
751 This enum type is used to specify how Q3ListBox lays out its rows |
|
752 and columns. |
|
753 |
|
754 \value FixedNumber There is a fixed number of rows (or columns). |
|
755 |
|
756 \value FitToWidth There are as many columns as will fit |
|
757 on-screen. |
|
758 |
|
759 \value FitToHeight There are as many rows as will fit on-screen. |
|
760 |
|
761 \value Variable There are as many rows as are required by the |
|
762 column mode. (Or as many columns as required by the row mode.) |
|
763 |
|
764 Example: When you call setRowMode(FitToHeight), columnMode() |
|
765 automatically becomes \c Variable to accommodate the row mode |
|
766 you've set. |
|
767 */ |
|
768 |
|
769 /*! |
|
770 \fn void Q3ListBox::onItem(Q3ListBoxItem *i) |
|
771 |
|
772 This signal is emitted when the user moves the mouse cursor onto |
|
773 an item, similar to the QWidget::enterEvent() function. \a i is |
|
774 the Q3ListBoxItem that the mouse has moved on. |
|
775 */ |
|
776 |
|
777 // ### bug here too? enter/leave event may noit considered. move the |
|
778 // mouse out of the window and back in, to the same item - does it |
|
779 // work? |
|
780 |
|
781 /*! |
|
782 \fn void Q3ListBox::onViewport() |
|
783 |
|
784 This signal is emitted when the user moves the mouse cursor from |
|
785 an item to an empty part of the list box. |
|
786 */ |
|
787 |
|
788 |
|
789 /*! |
|
790 Constructs a new empty list box called \a name and with parent \a |
|
791 parent and widget attributes \a f. |
|
792 |
|
793 This constructor sets the Qt::WA_StaticContent and the |
|
794 Qt::WA_NoBackground attributes to boost performance when drawing |
|
795 Q3ListBoxItems. This may be unsuitable for custom Q3ListBoxItem |
|
796 classes, in which case Qt::WA_StaticContents and Qt::WA_NoBackground |
|
797 should be cleared on the viewport() after construction. |
|
798 */ |
|
799 |
|
800 Q3ListBox::Q3ListBox(QWidget *parent, const char *name, Qt::WindowFlags f) |
|
801 : Q3ScrollView(parent, name, f | Qt::WStaticContents | Qt::WNoAutoErase) |
|
802 { |
|
803 d = new Q3ListBoxPrivate(this); |
|
804 d->updateTimer = new QTimer(this, "listbox update timer"); |
|
805 d->visibleTimer = new QTimer(this, "listbox visible timer"); |
|
806 d->inputTimer = new QTimer(this, "listbox input timer"); |
|
807 d->resizeTimer = new QTimer(this, "listbox resize timer"); |
|
808 d->clearing = false; |
|
809 d->pressedItem = 0; |
|
810 d->selectAnchor = 0; |
|
811 d->select = false; |
|
812 d->rubber = 0; |
|
813 |
|
814 setMouseTracking(true); |
|
815 viewport()->setMouseTracking(true); |
|
816 |
|
817 connect(d->updateTimer, SIGNAL(timeout()), |
|
818 this, SLOT(refreshSlot())); |
|
819 connect(d->visibleTimer, SIGNAL(timeout()), |
|
820 this, SLOT(ensureCurrentVisible())); |
|
821 connect(d->resizeTimer, SIGNAL(timeout()), |
|
822 this, SLOT(adjustItems())); |
|
823 viewport()->setBackgroundRole(QPalette::Base); |
|
824 viewport()->setFocusProxy(this); |
|
825 viewport()->setFocusPolicy(Qt::WheelFocus); |
|
826 setFocusPolicy(Qt::WheelFocus); |
|
827 setAttribute(Qt::WA_MacShowFocusRect); |
|
828 } |
|
829 |
|
830 |
|
831 Q3ListBox * Q3ListBox::changedListBox = 0; |
|
832 |
|
833 /*! |
|
834 Destroys the list box. Deletes all list box items. |
|
835 */ |
|
836 |
|
837 Q3ListBox::~Q3ListBox() |
|
838 { |
|
839 if (changedListBox == this) |
|
840 changedListBox = 0; |
|
841 clear(); |
|
842 delete d; |
|
843 d = 0; |
|
844 } |
|
845 |
|
846 /*! |
|
847 \fn void Q3ListBox::pressed(Q3ListBoxItem *item) |
|
848 |
|
849 This signal is emitted when the user presses any mouse button. If |
|
850 \a item is not 0, the cursor is on \a item. If \a item is 0, the |
|
851 mouse cursor isn't on any item. |
|
852 |
|
853 Note that you must not delete any Q3ListBoxItem objects in slots |
|
854 connected to this signal. |
|
855 */ |
|
856 |
|
857 /*! |
|
858 \fn void Q3ListBox::pressed(Q3ListBoxItem *item, const QPoint &pnt) |
|
859 \overload |
|
860 |
|
861 This signal is emitted when the user presses any mouse button. If |
|
862 \a item is not 0, the cursor is on \a item. If \a item is 0, the |
|
863 mouse cursor isn't on any item. |
|
864 |
|
865 \a pnt is the position of the mouse cursor in the global |
|
866 coordinate system (QMouseEvent::globalPos()). |
|
867 |
|
868 Note that you must not delete any Q3ListBoxItem objects in slots |
|
869 connected to this signal. |
|
870 |
|
871 \sa mouseButtonPressed() rightButtonPressed() clicked() |
|
872 */ |
|
873 |
|
874 /*! |
|
875 \fn void Q3ListBox::clicked(Q3ListBoxItem *item) |
|
876 |
|
877 This signal is emitted when the user clicks any mouse button. If |
|
878 \a item is not 0, the cursor is on \a item. If \a item is 0, the |
|
879 mouse cursor isn't on any item. |
|
880 |
|
881 Note that you must not delete any Q3ListBoxItem objects in slots |
|
882 connected to this signal. |
|
883 */ |
|
884 |
|
885 /*! |
|
886 \fn void Q3ListBox::clicked(Q3ListBoxItem *item, const QPoint &pnt) |
|
887 \overload |
|
888 |
|
889 This signal is emitted when the user clicks any mouse button. If |
|
890 \a item is not 0, the cursor is on \a item. If \a item is 0, the |
|
891 mouse cursor isn't on any item. |
|
892 |
|
893 \a pnt is the position of the mouse cursor in the global |
|
894 coordinate system (QMouseEvent::globalPos()). (If the click's |
|
895 press and release differs by a pixel or two, \a pnt is the |
|
896 position at release time.) |
|
897 |
|
898 Note that you must not delete any Q3ListBoxItem objects in slots |
|
899 connected to this signal. |
|
900 */ |
|
901 |
|
902 /*! |
|
903 \fn void Q3ListBox::mouseButtonClicked (int button, Q3ListBoxItem * item, const QPoint & pos) |
|
904 |
|
905 This signal is emitted when the user clicks mouse button \a |
|
906 button. If \a item is not 0, the cursor is on \a item. If \a item |
|
907 is 0, the mouse cursor isn't on any item. |
|
908 |
|
909 \a pos is the position of the mouse cursor in the global |
|
910 coordinate system (QMouseEvent::globalPos()). (If the click's |
|
911 press and release differs by a pixel or two, \a pos is the |
|
912 position at release time.) |
|
913 |
|
914 Note that you must not delete any Q3ListBoxItem objects in slots |
|
915 connected to this signal. |
|
916 */ |
|
917 |
|
918 /*! |
|
919 \fn void Q3ListBox::mouseButtonPressed (int button, Q3ListBoxItem * item, const QPoint & pos) |
|
920 |
|
921 This signal is emitted when the user presses mouse button \a |
|
922 button. If \a item is not 0, the cursor is on \a item. If \a item |
|
923 is 0, the mouse cursor isn't on any item. |
|
924 |
|
925 \a pos is the position of the mouse cursor in the global |
|
926 coordinate system (QMouseEvent::globalPos()). |
|
927 |
|
928 Note that you must not delete any Q3ListBoxItem objects in slots |
|
929 connected to this signal. |
|
930 */ |
|
931 |
|
932 /*! |
|
933 \fn void Q3ListBox::doubleClicked(Q3ListBoxItem *item) |
|
934 |
|
935 This signal is emitted whenever an item is double-clicked. It's |
|
936 emitted on the second button press, not the second button release. |
|
937 If \a item is not 0, the cursor is on \a item. If \a item is 0, |
|
938 the mouse cursor isn't on any item. |
|
939 */ |
|
940 |
|
941 |
|
942 /*! |
|
943 \fn void Q3ListBox::returnPressed(Q3ListBoxItem *item) |
|
944 |
|
945 This signal is emitted when Enter or Return is pressed. The |
|
946 \a item passed in the argument is currentItem(). |
|
947 */ |
|
948 |
|
949 /*! |
|
950 \fn void Q3ListBox::rightButtonClicked(Q3ListBoxItem *item, const QPoint& point) |
|
951 |
|
952 This signal is emitted when the right button is clicked. The \a |
|
953 item is the item that the button was clicked on (which could be |
|
954 0 if no item was clicked on), and the \a point is where the |
|
955 click took place in global coordinates. |
|
956 */ |
|
957 |
|
958 |
|
959 /*! |
|
960 \fn void Q3ListBox::rightButtonPressed (Q3ListBoxItem *item, const QPoint &point) |
|
961 |
|
962 This signal is emitted when the right button is pressed. The \a |
|
963 item is the item that the button was pressed over (which could be |
|
964 0 if no item was pressed over), and the \a point is where the |
|
965 press took place in global coordinates. |
|
966 */ |
|
967 |
|
968 /*! |
|
969 \fn void Q3ListBox::contextMenuRequested(Q3ListBoxItem *item, const QPoint & pos) |
|
970 |
|
971 This signal is emitted when the user invokes a context menu with |
|
972 the right mouse button or with special system keys, with \a item |
|
973 being the item under the mouse cursor or the current item, |
|
974 respectively. |
|
975 |
|
976 \a pos is the position for the context menu in the global |
|
977 coordinate system. |
|
978 */ |
|
979 |
|
980 /*! |
|
981 \fn void Q3ListBox::selectionChanged() |
|
982 |
|
983 This signal is emitted when the selection set of a list box |
|
984 changes. This signal is emitted in each selection mode. If the |
|
985 user selects five items by drag-selecting, Q3ListBox tries to emit |
|
986 just one selectionChanged() signal so the signal can be connected |
|
987 to computationally expensive slots. |
|
988 |
|
989 \sa selected() currentItem() |
|
990 */ |
|
991 |
|
992 /*! |
|
993 \fn void Q3ListBox::selectionChanged(Q3ListBoxItem *item) |
|
994 \overload |
|
995 |
|
996 This signal is emitted when the selection in a \l Single selection |
|
997 list box changes. \a item is the newly selected list box item. |
|
998 |
|
999 \sa selected() currentItem() |
|
1000 */ |
|
1001 |
|
1002 /*! |
|
1003 \fn void Q3ListBox::currentChanged(Q3ListBoxItem *item) |
|
1004 |
|
1005 This signal is emitted when the user makes a new item the current |
|
1006 item. \a item is the new current list box item. |
|
1007 |
|
1008 \sa setCurrentItem() currentItem() |
|
1009 */ |
|
1010 |
|
1011 /*! |
|
1012 \fn void Q3ListBox::highlighted(int index) |
|
1013 |
|
1014 This signal is emitted when the user makes a new item the current |
|
1015 item. \a index is the index of the new current item. |
|
1016 |
|
1017 \sa currentChanged() selected() currentItem() selectionChanged() |
|
1018 */ |
|
1019 |
|
1020 /*! |
|
1021 \fn void Q3ListBox::highlighted(Q3ListBoxItem *item) |
|
1022 |
|
1023 \overload |
|
1024 |
|
1025 This signal is emitted when the user makes a new \a item the current |
|
1026 \a item. |
|
1027 |
|
1028 \sa currentChanged() selected() currentItem() selectionChanged() |
|
1029 */ |
|
1030 |
|
1031 /*! |
|
1032 \fn void Q3ListBox::highlighted(const QString & text) |
|
1033 |
|
1034 \overload |
|
1035 |
|
1036 This signal is emitted when the user makes a new item the current |
|
1037 item and the item is (or has) as string. The argument is the new |
|
1038 current item's \a text. |
|
1039 |
|
1040 \sa currentChanged() selected() currentItem() selectionChanged() |
|
1041 */ |
|
1042 |
|
1043 /*! |
|
1044 \fn void Q3ListBox::selected(int index) |
|
1045 |
|
1046 This signal is emitted when the user double-clicks on an item or |
|
1047 presses Enter on the current item. \a index is the index of the |
|
1048 selected item. |
|
1049 |
|
1050 \sa currentChanged() highlighted() selectionChanged() |
|
1051 */ |
|
1052 |
|
1053 /*! |
|
1054 \fn void Q3ListBox::selected(Q3ListBoxItem *item) |
|
1055 |
|
1056 \overload |
|
1057 |
|
1058 This signal is emitted when the user double-clicks on an \a item or |
|
1059 presses Enter on the current \a item. |
|
1060 |
|
1061 \sa currentChanged() highlighted() selectionChanged() |
|
1062 */ |
|
1063 |
|
1064 /*! |
|
1065 \fn void Q3ListBox::selected(const QString &text) |
|
1066 |
|
1067 \overload |
|
1068 |
|
1069 This signal is emitted when the user double-clicks on an item or |
|
1070 presses Enter on the current item, and the item is (or has) a |
|
1071 string. The argument is the \a text of the selected item. |
|
1072 |
|
1073 \sa currentChanged() highlighted() selectionChanged() |
|
1074 */ |
|
1075 |
|
1076 /*! |
|
1077 \property Q3ListBox::count |
|
1078 \brief the number of items in the list box |
|
1079 */ |
|
1080 |
|
1081 uint Q3ListBox::count() const |
|
1082 { |
|
1083 return d->count; |
|
1084 } |
|
1085 |
|
1086 #if 0 |
|
1087 /*! |
|
1088 Inserts the string list \a list into the list at position \a |
|
1089 index. |
|
1090 |
|
1091 If \a index is negative, \a list is inserted at the end of the |
|
1092 list. If \a index is too large, the operation is ignored. |
|
1093 |
|
1094 \warning This function uses \c{const char *} rather than QString, |
|
1095 so we recommend against using it. It is provided so that legacy |
|
1096 code will continue to work, and so that programs that certainly |
|
1097 will not need to handle code outside a single 8-bit locale can use |
|
1098 it. See insertStringList() which uses real QStrings. |
|
1099 |
|
1100 \warning This function is never significantly faster than a loop |
|
1101 around insertItem(). |
|
1102 |
|
1103 \sa insertItem(), insertStringList() |
|
1104 */ |
|
1105 |
|
1106 void Q3ListBox::insertStrList(const QStrList *list, int index) |
|
1107 { |
|
1108 if (!list) { |
|
1109 Q_ASSERT(list != 0); |
|
1110 return; |
|
1111 } |
|
1112 insertStrList(*list, index); |
|
1113 } |
|
1114 #endif |
|
1115 |
|
1116 |
|
1117 /*! |
|
1118 Inserts the string list \a list into the list at position \a |
|
1119 index. |
|
1120 |
|
1121 If \a index is negative, \a list is inserted at the end of the |
|
1122 list. If \a index is too large, the operation is ignored. |
|
1123 |
|
1124 \warning This function is never significantly faster than a loop |
|
1125 around insertItem(). |
|
1126 |
|
1127 \sa insertItem(), insertStrList() |
|
1128 */ |
|
1129 |
|
1130 void Q3ListBox::insertStringList(const QStringList & list, int index) |
|
1131 { |
|
1132 if (index < 0) |
|
1133 index = count(); |
|
1134 for (QStringList::ConstIterator it = list.begin(); it != list.end(); ++it) |
|
1135 insertItem(new Q3ListBoxText(*it), index++); |
|
1136 } |
|
1137 |
|
1138 |
|
1139 #if 0 |
|
1140 /*! |
|
1141 \overload |
|
1142 |
|
1143 Inserts the string list \a list into the list at position \a |
|
1144 index. |
|
1145 |
|
1146 If \a index is negative, \a list is inserted at the end of the |
|
1147 list. If \a index is too large, the operation is ignored. |
|
1148 |
|
1149 \warning This function uses \c{const char *} rather than QString, |
|
1150 so we recommend against using it. It is provided so that legacy |
|
1151 code will continue to work, and so that programs that certainly |
|
1152 will not need to handle code outside a single 8-bit locale can use |
|
1153 it. See insertStringList() which uses real QStrings. |
|
1154 |
|
1155 \warning This function is never significantly faster than a loop |
|
1156 around insertItem(). |
|
1157 |
|
1158 \sa insertItem(), insertStringList() |
|
1159 */ |
|
1160 void Q3ListBox::insertStrList(const QStrList & list, int index) |
|
1161 { |
|
1162 QStrListIterator it(list); |
|
1163 const char* txt; |
|
1164 if (index < 0) |
|
1165 index = count(); |
|
1166 while ((txt=it.current())) { |
|
1167 ++it; |
|
1168 insertItem(new Q3ListBoxText(QString::fromLatin1(txt)), |
|
1169 index++); |
|
1170 } |
|
1171 if (hasFocus() && !d->current) |
|
1172 setCurrentItem(d->head); |
|
1173 } |
|
1174 #endif |
|
1175 |
|
1176 |
|
1177 /*! |
|
1178 Inserts the \a numStrings strings of the array \a strings into the |
|
1179 list at position \a index. |
|
1180 |
|
1181 If \a index is negative, insertStrList() inserts \a strings at the |
|
1182 end of the list. If \a index is too large, the operation is |
|
1183 ignored. |
|
1184 |
|
1185 \warning This function uses \c{const char *} rather than QString, |
|
1186 so we recommend against using it. It is provided so that legacy |
|
1187 code will continue to work, and so that programs that certainly |
|
1188 will not need to handle code outside a single 8-bit locale can use |
|
1189 it. See insertStringList() which uses real QStrings. |
|
1190 |
|
1191 \warning This function is never significantly faster than a loop |
|
1192 around insertItem(). |
|
1193 |
|
1194 \sa insertItem(), insertStringList() |
|
1195 */ |
|
1196 |
|
1197 void Q3ListBox::insertStrList(const char **strings, int numStrings, int index) |
|
1198 { |
|
1199 if (!strings) { |
|
1200 Q_ASSERT(strings != 0); |
|
1201 return; |
|
1202 } |
|
1203 if (index < 0) |
|
1204 index = count(); |
|
1205 int i = 0; |
|
1206 while ((numStrings<0 && strings[i]!=0) || i<numStrings) { |
|
1207 insertItem(new Q3ListBoxText(QString::fromLatin1(strings[i])), |
|
1208 index + i); |
|
1209 i++; |
|
1210 } |
|
1211 if (hasFocus() && !d->current) |
|
1212 setCurrentItem(d->head); |
|
1213 } |
|
1214 |
|
1215 /*! |
|
1216 Inserts the item \a lbi into the list at position \a index. |
|
1217 |
|
1218 If \a index is negative or larger than the number of items in the |
|
1219 list box, \a lbi is inserted at the end of the list. |
|
1220 |
|
1221 \sa insertStrList() |
|
1222 */ |
|
1223 |
|
1224 void Q3ListBox::insertItem(const Q3ListBoxItem *lbi, int index) |
|
1225 { |
|
1226 if (!lbi) |
|
1227 return; |
|
1228 |
|
1229 if (index < 0) |
|
1230 index = d->count; |
|
1231 |
|
1232 if (index >= d->count) { |
|
1233 insertItem(lbi, d->last); |
|
1234 return; |
|
1235 } |
|
1236 |
|
1237 Q3ListBoxItem * item = (Q3ListBoxItem *)lbi; |
|
1238 d->count++; |
|
1239 d->cache = 0; |
|
1240 |
|
1241 item->lbox = this; |
|
1242 if (!d->head || index == 0) { |
|
1243 item->n = d->head; |
|
1244 item->p = 0; |
|
1245 d->head = item; |
|
1246 item->dirty = true; |
|
1247 if (item->n) |
|
1248 item->n->p = item; |
|
1249 } else { |
|
1250 Q3ListBoxItem * i = d->head; |
|
1251 while (i->n && index > 1) { |
|
1252 i = i->n; |
|
1253 index--; |
|
1254 } |
|
1255 if (i->n) { |
|
1256 item->n = i->n; |
|
1257 item->p = i; |
|
1258 item->n->p = item; |
|
1259 item->p->n = item; |
|
1260 } else { |
|
1261 i->n = item; |
|
1262 item->p = i; |
|
1263 item->n = 0; |
|
1264 } |
|
1265 } |
|
1266 |
|
1267 if (hasFocus() && !d->current) { |
|
1268 d->current = d->head; |
|
1269 updateItem(d->current); |
|
1270 emit highlighted(d->current); |
|
1271 emit highlighted(d->current->text()); |
|
1272 emit highlighted(index); |
|
1273 } |
|
1274 |
|
1275 triggerUpdate(true); |
|
1276 } |
|
1277 |
|
1278 /*! |
|
1279 \overload |
|
1280 |
|
1281 Inserts the item \a lbi into the list after the item \a after, or |
|
1282 at the beginning if \a after is 0. |
|
1283 |
|
1284 \sa insertStrList() |
|
1285 */ |
|
1286 |
|
1287 void Q3ListBox::insertItem(const Q3ListBoxItem *lbi, const Q3ListBoxItem *after) |
|
1288 { |
|
1289 if (!lbi) |
|
1290 return; |
|
1291 |
|
1292 Q3ListBoxItem * item = (Q3ListBoxItem*)lbi; |
|
1293 d->count++; |
|
1294 d->cache = 0; |
|
1295 |
|
1296 item->lbox = this; |
|
1297 if (!d->head || !after) { |
|
1298 item->n = d->head; |
|
1299 item->p = 0; |
|
1300 d->head = item; |
|
1301 item->dirty = true; |
|
1302 if (item->n) |
|
1303 item->n->p = item; |
|
1304 } else { |
|
1305 Q3ListBoxItem * i = (Q3ListBoxItem*) after; |
|
1306 if (i) { |
|
1307 item->n = i->n; |
|
1308 item->p = i; |
|
1309 if (item->n) |
|
1310 item->n->p = item; |
|
1311 if (item->p) |
|
1312 item->p->n = item; |
|
1313 } |
|
1314 } |
|
1315 |
|
1316 if (after == d->last) |
|
1317 d->last = (Q3ListBoxItem*) lbi; |
|
1318 |
|
1319 if (hasFocus() && !d->current) { |
|
1320 d->current = d->head; |
|
1321 updateItem(d->current); |
|
1322 emit highlighted(d->current); |
|
1323 emit highlighted(d->current->text()); |
|
1324 emit highlighted(index(d->current)); |
|
1325 } |
|
1326 |
|
1327 triggerUpdate(true); |
|
1328 } |
|
1329 |
|
1330 /*! |
|
1331 \overload |
|
1332 |
|
1333 Inserts a new list box text item with the text \a text into the |
|
1334 list at position \a index. |
|
1335 |
|
1336 If \a index is negative, \a text is inserted at the end of the |
|
1337 list. |
|
1338 |
|
1339 \sa insertStrList() |
|
1340 */ |
|
1341 |
|
1342 void Q3ListBox::insertItem(const QString &text, int index) |
|
1343 { |
|
1344 insertItem(new Q3ListBoxText(text), index); |
|
1345 } |
|
1346 |
|
1347 /*! |
|
1348 \overload |
|
1349 |
|
1350 Inserts a new list box pixmap item with the pixmap \a pixmap into |
|
1351 the list at position \a index. |
|
1352 |
|
1353 If \a index is negative, \a pixmap is inserted at the end of the |
|
1354 list. |
|
1355 |
|
1356 \sa insertStrList() |
|
1357 */ |
|
1358 |
|
1359 void Q3ListBox::insertItem(const QPixmap &pixmap, int index) |
|
1360 { |
|
1361 insertItem(new Q3ListBoxPixmap(pixmap), index); |
|
1362 } |
|
1363 |
|
1364 /*! |
|
1365 \overload |
|
1366 |
|
1367 Inserts a new list box pixmap item with the pixmap \a pixmap and |
|
1368 the text \a text into the list at position \a index. |
|
1369 |
|
1370 If \a index is negative, \a pixmap is inserted at the end of the |
|
1371 list. |
|
1372 |
|
1373 \sa insertStrList() |
|
1374 */ |
|
1375 |
|
1376 void Q3ListBox::insertItem(const QPixmap &pixmap, const QString &text, int index) |
|
1377 { |
|
1378 insertItem(new Q3ListBoxPixmap(pixmap, text), index); |
|
1379 } |
|
1380 |
|
1381 /*! |
|
1382 Removes and deletes the item at position \a index. If \a index is |
|
1383 equal to currentItem(), a new item becomes current and the |
|
1384 currentChanged() and highlighted() signals are emitted. |
|
1385 |
|
1386 \sa insertItem(), clear() |
|
1387 */ |
|
1388 |
|
1389 void Q3ListBox::removeItem(int index) |
|
1390 { |
|
1391 bool wasVisible = itemVisible(currentItem()); |
|
1392 delete item(index); |
|
1393 triggerUpdate(true); |
|
1394 if (wasVisible) |
|
1395 ensureCurrentVisible(); |
|
1396 } |
|
1397 |
|
1398 |
|
1399 /*! |
|
1400 Deletes all the items in the list. |
|
1401 |
|
1402 \sa removeItem() |
|
1403 */ |
|
1404 |
|
1405 void Q3ListBox::clear() |
|
1406 { |
|
1407 setContentsPos(0, 0); |
|
1408 bool blocked = signalsBlocked(); |
|
1409 blockSignals(true); |
|
1410 d->clearing = true; |
|
1411 d->current = 0; |
|
1412 d->tmpCurrent = 0; |
|
1413 Q3ListBoxItem * i = d->head; |
|
1414 d->head = 0; |
|
1415 while (i) { |
|
1416 Q3ListBoxItem * n = i->n; |
|
1417 i->n = i->p = 0; |
|
1418 delete i; |
|
1419 i = n; |
|
1420 } |
|
1421 d->count = 0; |
|
1422 d->numRows = 1; |
|
1423 d->numColumns = 1; |
|
1424 d->currentRow = 0; |
|
1425 d->currentColumn = 0; |
|
1426 d->mousePressRow = -1; |
|
1427 d->mousePressColumn = -1; |
|
1428 d->mouseMoveRow = -1; |
|
1429 d->mouseMoveColumn = -1; |
|
1430 clearSelection(); |
|
1431 d->selectAnchor = 0; |
|
1432 blockSignals(blocked); |
|
1433 triggerUpdate(true); |
|
1434 d->last = 0; |
|
1435 d->clearing = false; |
|
1436 } |
|
1437 |
|
1438 |
|
1439 /*! |
|
1440 Returns the text at position \a index, or an empty string if there |
|
1441 is no text at that position. |
|
1442 |
|
1443 \sa pixmap() |
|
1444 */ |
|
1445 |
|
1446 QString Q3ListBox::text(int index) const |
|
1447 { |
|
1448 Q3ListBoxItem * i = item(index); |
|
1449 if (i) |
|
1450 return i->text(); |
|
1451 return QString(); |
|
1452 } |
|
1453 |
|
1454 |
|
1455 /*! |
|
1456 Returns a pointer to the pixmap at position \a index, or 0 if |
|
1457 there is no pixmap there. |
|
1458 |
|
1459 \sa text() |
|
1460 */ |
|
1461 |
|
1462 const QPixmap *Q3ListBox::pixmap(int index) const |
|
1463 { |
|
1464 Q3ListBoxItem * i = item(index); |
|
1465 if (i) |
|
1466 return i->pixmap(); |
|
1467 return 0; |
|
1468 } |
|
1469 |
|
1470 /*! |
|
1471 \overload |
|
1472 |
|
1473 Replaces the item at position \a index with a new list box text |
|
1474 item with text \a text. |
|
1475 |
|
1476 The operation is ignored if \a index is out of range. |
|
1477 |
|
1478 \sa insertItem(), removeItem() |
|
1479 */ |
|
1480 |
|
1481 void Q3ListBox::changeItem(const QString &text, int index) |
|
1482 { |
|
1483 if(index >= 0 && index < (int)count()) |
|
1484 changeItem(new Q3ListBoxText(text), index); |
|
1485 } |
|
1486 |
|
1487 /*! |
|
1488 \overload |
|
1489 |
|
1490 Replaces the item at position \a index with a new list box pixmap |
|
1491 item with pixmap \a pixmap. |
|
1492 |
|
1493 The operation is ignored if \a index is out of range. |
|
1494 |
|
1495 \sa insertItem(), removeItem() |
|
1496 */ |
|
1497 |
|
1498 void Q3ListBox::changeItem(const QPixmap &pixmap, int index) |
|
1499 { |
|
1500 if(index >= 0 && index < (int)count()) |
|
1501 changeItem(new Q3ListBoxPixmap(pixmap), index); |
|
1502 } |
|
1503 |
|
1504 /*! |
|
1505 \overload |
|
1506 |
|
1507 Replaces the item at position \a index with a new list box pixmap |
|
1508 item with pixmap \a pixmap and text \a text. |
|
1509 |
|
1510 The operation is ignored if \a index is out of range. |
|
1511 |
|
1512 \sa insertItem(), removeItem() |
|
1513 */ |
|
1514 |
|
1515 void Q3ListBox::changeItem(const QPixmap &pixmap, const QString &text, int index) |
|
1516 { |
|
1517 if(index >= 0 && index < (int)count()) |
|
1518 changeItem(new Q3ListBoxPixmap(pixmap, text), index); |
|
1519 } |
|
1520 |
|
1521 |
|
1522 |
|
1523 /*! |
|
1524 Replaces the item at position \a index with \a lbi. If \a index is |
|
1525 negative or too large, changeItem() does nothing. |
|
1526 |
|
1527 The item that has been changed will become selected. |
|
1528 |
|
1529 \sa insertItem(), removeItem() |
|
1530 */ |
|
1531 |
|
1532 void Q3ListBox::changeItem(const Q3ListBoxItem *lbi, int index) |
|
1533 { |
|
1534 if (!lbi || index < 0 || index >= (int)count()) |
|
1535 return; |
|
1536 |
|
1537 removeItem(index); |
|
1538 insertItem(lbi, index); |
|
1539 setCurrentItem(index); |
|
1540 } |
|
1541 |
|
1542 |
|
1543 /*! |
|
1544 \property Q3ListBox::numItemsVisible |
|
1545 \brief the number of visible items. |
|
1546 |
|
1547 Both partially and entirely visible items are counted. |
|
1548 */ |
|
1549 |
|
1550 int Q3ListBox::numItemsVisible() const |
|
1551 { |
|
1552 doLayout(); |
|
1553 |
|
1554 int columns = 0; |
|
1555 |
|
1556 int x = contentsX(); |
|
1557 int i=0; |
|
1558 while (i < (int)d->columnPos.size()-1 && |
|
1559 d->columnPos[i] < x) |
|
1560 i++; |
|
1561 if (i < (int)d->columnPos.size()-1 && |
|
1562 d->columnPos[i] > x) |
|
1563 columns++; |
|
1564 x += visibleWidth(); |
|
1565 while (i < (int)d->columnPos.size()-1 && |
|
1566 d->columnPos[i] < x) { |
|
1567 i++; |
|
1568 columns++; |
|
1569 } |
|
1570 |
|
1571 int y = contentsY(); |
|
1572 int rows = 0; |
|
1573 while (i < (int)d->rowPos.size()-1 && |
|
1574 d->rowPos[i] < y) |
|
1575 i++; |
|
1576 if (i < (int)d->rowPos.size()-1 && |
|
1577 d->rowPos[i] > y) |
|
1578 rows++; |
|
1579 y += visibleHeight(); |
|
1580 while (i < (int)d->rowPos.size()-1 && |
|
1581 d->rowPos[i] < y) { |
|
1582 i++; |
|
1583 rows++; |
|
1584 } |
|
1585 |
|
1586 return rows*columns; |
|
1587 } |
|
1588 |
|
1589 int Q3ListBox::currentItem() const |
|
1590 { |
|
1591 if (!d->current || !d->head) |
|
1592 return -1; |
|
1593 |
|
1594 return index(d->current); |
|
1595 } |
|
1596 |
|
1597 |
|
1598 /*! |
|
1599 \property Q3ListBox::currentText |
|
1600 \brief the text of the current item. |
|
1601 |
|
1602 This is equivalent to text(currentItem()). |
|
1603 */ |
|
1604 |
|
1605 |
|
1606 /*! |
|
1607 \property Q3ListBox::currentItem |
|
1608 \brief the current highlighted item |
|
1609 |
|
1610 When setting this property, the highlighting is moved to the item |
|
1611 and the list box scrolled as necessary. |
|
1612 |
|
1613 If no item is current, currentItem() returns -1. |
|
1614 */ |
|
1615 |
|
1616 void Q3ListBox::setCurrentItem(int index) |
|
1617 { |
|
1618 setCurrentItem(item(index)); |
|
1619 } |
|
1620 |
|
1621 /*! |
|
1622 \reimp |
|
1623 */ |
|
1624 QVariant Q3ListBox::inputMethodQuery(Qt::InputMethodQuery query) const |
|
1625 { |
|
1626 if (query == Qt::ImMicroFocus) |
|
1627 return d->current ? itemRect(d->current) : QRect(); |
|
1628 return QWidget::inputMethodQuery(query); |
|
1629 } |
|
1630 |
|
1631 /*! |
|
1632 \overload |
|
1633 |
|
1634 Sets the current item to the Q3ListBoxItem \a i. |
|
1635 */ |
|
1636 void Q3ListBox::setCurrentItem(Q3ListBoxItem * i) |
|
1637 { |
|
1638 if (!i || d->current == i) |
|
1639 return; |
|
1640 |
|
1641 Q3ListBoxItem * o = d->current; |
|
1642 d->current = i; |
|
1643 int ind = index(i); |
|
1644 |
|
1645 if (i && selectionMode() == Single) { |
|
1646 bool changed = false; |
|
1647 if (o && o->s) { |
|
1648 changed = true; |
|
1649 o->s = false; |
|
1650 } |
|
1651 if (i && !i->s && d->selectionMode != NoSelection && i->isSelectable()) { |
|
1652 i->s = true; |
|
1653 changed = true; |
|
1654 emit selectionChanged(i); |
|
1655 #ifndef QT_NO_ACCESSIBILITY |
|
1656 QAccessible::updateAccessibility(viewport(), ind+1, QAccessible::StateChanged); |
|
1657 #endif |
|
1658 } |
|
1659 if (changed) { |
|
1660 emit selectionChanged(); |
|
1661 #ifndef QT_NO_ACCESSIBILITY |
|
1662 QAccessible::updateAccessibility(viewport(), 0, QAccessible::Selection); |
|
1663 #endif |
|
1664 } |
|
1665 } |
|
1666 |
|
1667 d->currentColumn = ind / numRows(); |
|
1668 d->currentRow = ind % numRows(); |
|
1669 if (o) |
|
1670 updateItem(o); |
|
1671 if (i) |
|
1672 updateItem(i); |
|
1673 // scroll after the items are redrawn |
|
1674 d->visibleTimer->start(1, true); |
|
1675 |
|
1676 QString tmp; |
|
1677 if (i) |
|
1678 tmp = i->text(); |
|
1679 emit highlighted(i); |
|
1680 if (!tmp.isNull()) |
|
1681 emit highlighted(tmp); |
|
1682 emit highlighted(ind); |
|
1683 emit currentChanged(i); |
|
1684 |
|
1685 #ifndef QT_NO_ACCESSIBILITY |
|
1686 QAccessible::updateAccessibility(viewport(), ind+1, QAccessible::Focus); |
|
1687 #endif |
|
1688 } |
|
1689 |
|
1690 |
|
1691 /*! |
|
1692 Returns a pointer to the item at position \a index, or 0 if \a |
|
1693 index is out of bounds. |
|
1694 |
|
1695 \sa index() |
|
1696 */ |
|
1697 |
|
1698 Q3ListBoxItem *Q3ListBox::item(int index) const |
|
1699 { |
|
1700 if (index < 0 || index > d->count -1) |
|
1701 return 0; |
|
1702 |
|
1703 Q3ListBoxItem * i = d->head; |
|
1704 |
|
1705 if (d->cache && index > 0) { |
|
1706 i = d->cache; |
|
1707 int idx = d->cacheIndex; |
|
1708 while (i && idx < index) { |
|
1709 idx++; |
|
1710 i = i->n; |
|
1711 } |
|
1712 while (i && idx > index) { |
|
1713 idx--; |
|
1714 i = i->p; |
|
1715 } |
|
1716 } else { |
|
1717 int idx = index; |
|
1718 while (i && idx > 0) { |
|
1719 idx--; |
|
1720 i = i->n; |
|
1721 } |
|
1722 } |
|
1723 |
|
1724 if (index > 0) { |
|
1725 d->cache = i; |
|
1726 d->cacheIndex = index; |
|
1727 } |
|
1728 |
|
1729 return i; |
|
1730 } |
|
1731 |
|
1732 |
|
1733 /*! |
|
1734 Returns the index of \a lbi, or -1 if the item is not in this list |
|
1735 box or \a lbi is 0. |
|
1736 |
|
1737 \sa item() |
|
1738 */ |
|
1739 |
|
1740 int Q3ListBox::index(const Q3ListBoxItem * lbi) const |
|
1741 { |
|
1742 if (!lbi) |
|
1743 return -1; |
|
1744 Q3ListBoxItem * i_n = d->head; |
|
1745 int c_n = 0; |
|
1746 if (d->cache) { |
|
1747 i_n = d->cache; |
|
1748 c_n = d->cacheIndex; |
|
1749 } |
|
1750 Q3ListBoxItem* i_p = i_n; |
|
1751 int c_p = c_n; |
|
1752 while ((i_n != 0 || i_p != 0) && i_n != lbi && i_p != lbi) { |
|
1753 if (i_n) { |
|
1754 c_n++; |
|
1755 i_n = i_n->n; |
|
1756 } |
|
1757 if (i_p) { |
|
1758 c_p--; |
|
1759 i_p = i_p->p; |
|
1760 } |
|
1761 } |
|
1762 if (i_p == lbi) |
|
1763 return c_p; |
|
1764 if (i_n == lbi) |
|
1765 return c_n; |
|
1766 return -1; |
|
1767 } |
|
1768 |
|
1769 |
|
1770 |
|
1771 /*! |
|
1772 Returns true if the item at position \a index is at least partly |
|
1773 visible; otherwise returns false. |
|
1774 */ |
|
1775 |
|
1776 bool Q3ListBox::itemVisible(int index) |
|
1777 { |
|
1778 Q3ListBoxItem * i = item(index); |
|
1779 return i ? itemVisible(i) : false; |
|
1780 } |
|
1781 |
|
1782 |
|
1783 /*! |
|
1784 \overload |
|
1785 |
|
1786 Returns true if \a item is at least partly visible; otherwise |
|
1787 returns false. |
|
1788 */ |
|
1789 |
|
1790 bool Q3ListBox::itemVisible(const Q3ListBoxItem * item) |
|
1791 { |
|
1792 if (d->layoutDirty) |
|
1793 doLayout(); |
|
1794 |
|
1795 int i = index(item); |
|
1796 int col = i / numRows(); |
|
1797 int row = i % numRows(); |
|
1798 return (d->columnPos[col] < contentsX()+visibleWidth() && |
|
1799 d->rowPos[row] < contentsY()+visibleHeight() && |
|
1800 d->columnPos[col+1] > contentsX() && |
|
1801 d->rowPos[row+1] > contentsY()); |
|
1802 } |
|
1803 |
|
1804 |
|
1805 /*! \reimp */ |
|
1806 |
|
1807 void Q3ListBox::mousePressEvent(QMouseEvent *e) |
|
1808 { |
|
1809 mousePressEventEx(e); |
|
1810 } |
|
1811 |
|
1812 void Q3ListBox::mousePressEventEx(QMouseEvent *e) |
|
1813 { |
|
1814 d->mouseInternalPress = true; |
|
1815 Q3ListBoxItem * i = itemAt(e->pos()); |
|
1816 |
|
1817 if (!i && !d->current && d->head) { |
|
1818 d->current = d->head; |
|
1819 updateItem(d->head); |
|
1820 } |
|
1821 |
|
1822 if (!i && (d->selectionMode != Single || e->button() == Qt::RightButton) |
|
1823 && !(e->state() & Qt::ControlButton)) |
|
1824 clearSelection(); |
|
1825 |
|
1826 d->select = d->selectionMode == Multi ? (i ? !i->isSelected() : false) : true; |
|
1827 d->pressedSelected = i && i->s; |
|
1828 |
|
1829 if (i) |
|
1830 d->selectAnchor = i; |
|
1831 if (i) { |
|
1832 switch(selectionMode()) { |
|
1833 default: |
|
1834 case Single: |
|
1835 if (!i->s || i != d->current) { |
|
1836 if (i->isSelectable()) |
|
1837 setSelected(i, true); |
|
1838 else |
|
1839 setCurrentItem(i); |
|
1840 } |
|
1841 break; |
|
1842 case Extended: |
|
1843 if (i) { |
|
1844 bool shouldBlock = false; |
|
1845 if (!(e->state() & Qt::ShiftButton) && |
|
1846 !(e->state() & Qt::ControlButton)) { |
|
1847 if (!i->isSelected()) { |
|
1848 bool b = signalsBlocked(); |
|
1849 blockSignals(true); |
|
1850 clearSelection(); |
|
1851 blockSignals(b); |
|
1852 } |
|
1853 setSelected(i, true); |
|
1854 d->dragging = true; // always assume dragging |
|
1855 shouldBlock = true; |
|
1856 } else if (e->state() & Qt::ShiftButton) { |
|
1857 d->pressedSelected = false; |
|
1858 Q3ListBoxItem *oldCurrent = item(currentItem()); |
|
1859 bool down = index(oldCurrent) < index(i); |
|
1860 |
|
1861 Q3ListBoxItem *lit = down ? oldCurrent : i; |
|
1862 bool select = d->select; |
|
1863 bool blocked = signalsBlocked(); |
|
1864 blockSignals(true); |
|
1865 for (;; lit = lit->n) { |
|
1866 if (!lit) { |
|
1867 triggerUpdate(false); |
|
1868 break; |
|
1869 } |
|
1870 if (down && lit == i) { |
|
1871 setSelected(i, select); |
|
1872 triggerUpdate(false); |
|
1873 break; |
|
1874 } |
|
1875 if (!down && lit == oldCurrent) { |
|
1876 setSelected(oldCurrent, select); |
|
1877 triggerUpdate(false); |
|
1878 break; |
|
1879 } |
|
1880 setSelected(lit, select); |
|
1881 } |
|
1882 blockSignals(blocked); |
|
1883 emit selectionChanged(); |
|
1884 } else if (e->state() & Qt::ControlButton) { |
|
1885 setSelected(i, !i->isSelected()); |
|
1886 shouldBlock = true; |
|
1887 d->pressedSelected = false; |
|
1888 } |
|
1889 bool blocked = signalsBlocked(); |
|
1890 blockSignals(shouldBlock); |
|
1891 setCurrentItem(i); |
|
1892 blockSignals(blocked); |
|
1893 } |
|
1894 break; |
|
1895 case Multi: |
|
1896 { |
|
1897 setSelected(i, !i->s); |
|
1898 bool b = signalsBlocked(); |
|
1899 blockSignals(true); |
|
1900 setCurrentItem(i); |
|
1901 blockSignals(b); |
|
1902 break; |
|
1903 } |
|
1904 case NoSelection: |
|
1905 setCurrentItem(i); |
|
1906 break; |
|
1907 } |
|
1908 } else { |
|
1909 bool unselect = true; |
|
1910 if (e->button() == Qt::LeftButton) { |
|
1911 if (d->selectionMode == Multi || |
|
1912 d->selectionMode == Extended) { |
|
1913 d->tmpCurrent = d->current; |
|
1914 d->current = 0; |
|
1915 updateItem(d->tmpCurrent); |
|
1916 if (d->rubber) |
|
1917 delete d->rubber; |
|
1918 d->rubber = 0; |
|
1919 d->rubber = new QRect(e->x(), e->y(), 0, 0); |
|
1920 |
|
1921 if (d->selectionMode == Extended && !(e->state() & Qt::ControlButton)) |
|
1922 selectAll(false); |
|
1923 unselect = false; |
|
1924 } |
|
1925 if (unselect && (e->button() == Qt::RightButton || |
|
1926 (selectionMode() == Multi || selectionMode() == Extended))) |
|
1927 clearSelection(); |
|
1928 } |
|
1929 } |
|
1930 |
|
1931 // for sanity, in case people are event-filtering or whatnot |
|
1932 delete d->scrollTimer; |
|
1933 d->scrollTimer = 0; |
|
1934 if (i) { |
|
1935 d->mousePressColumn = d->currentColumn; |
|
1936 d->mousePressRow = d->currentRow; |
|
1937 } else { |
|
1938 d->mousePressColumn = -1; |
|
1939 d->mousePressRow = -1; |
|
1940 } |
|
1941 d->ignoreMoves = false; |
|
1942 |
|
1943 d->pressedItem = i; |
|
1944 |
|
1945 emit pressed(i); |
|
1946 emit pressed(i, e->globalPos()); |
|
1947 emit mouseButtonPressed(e->button(), i, e->globalPos()); |
|
1948 if (e->button() == Qt::RightButton) |
|
1949 emit rightButtonPressed(i, e->globalPos()); |
|
1950 } |
|
1951 |
|
1952 |
|
1953 /*! \reimp */ |
|
1954 |
|
1955 void Q3ListBox::mouseReleaseEvent(QMouseEvent *e) |
|
1956 { |
|
1957 if (d->selectionMode == Extended && |
|
1958 d->dragging) { |
|
1959 d->dragging = false; |
|
1960 if (d->current != d->pressedItem) { |
|
1961 updateSelection(); // when we drag, we get an update after we release |
|
1962 } |
|
1963 } |
|
1964 |
|
1965 if (d->rubber) { |
|
1966 drawRubber(); |
|
1967 delete d->rubber; |
|
1968 d->rubber = 0; |
|
1969 d->current = d->tmpCurrent; |
|
1970 updateItem(d->current); |
|
1971 } |
|
1972 if (d->scrollTimer) |
|
1973 mouseMoveEvent(e); |
|
1974 delete d->scrollTimer; |
|
1975 d->scrollTimer = 0; |
|
1976 d->ignoreMoves = false; |
|
1977 |
|
1978 if (d->selectionMode == Extended && |
|
1979 d->current == d->pressedItem && |
|
1980 d->pressedSelected && d->current) { |
|
1981 bool block = signalsBlocked(); |
|
1982 blockSignals(true); |
|
1983 clearSelection(); |
|
1984 blockSignals(block); |
|
1985 d->current->s = true; |
|
1986 emit selectionChanged(); |
|
1987 } |
|
1988 |
|
1989 Q3ListBoxItem * i = itemAt(e->pos()); |
|
1990 bool emitClicked = (d->mousePressColumn != -1 && d->mousePressRow != -1) || !d->pressedItem; |
|
1991 emitClicked = emitClicked && d->pressedItem == i; |
|
1992 d->pressedItem = 0; |
|
1993 d->mousePressRow = -1; |
|
1994 d->mousePressColumn = -1; |
|
1995 d->mouseInternalPress = false; |
|
1996 if (emitClicked) { |
|
1997 emit clicked(i); |
|
1998 emit clicked(i, e->globalPos()); |
|
1999 emit mouseButtonClicked(e->button(), i, e->globalPos()); |
|
2000 if (e->button() == Qt::RightButton) |
|
2001 emit rightButtonClicked(i, e->globalPos()); |
|
2002 } |
|
2003 } |
|
2004 |
|
2005 |
|
2006 /*! \reimp */ |
|
2007 |
|
2008 void Q3ListBox::mouseDoubleClickEvent(QMouseEvent *e) |
|
2009 { |
|
2010 bool ok = true; |
|
2011 Q3ListBoxItem *i = itemAt(e->pos()); |
|
2012 if (!i || selectionMode() == NoSelection) |
|
2013 ok = false; |
|
2014 |
|
2015 d->ignoreMoves = true; |
|
2016 |
|
2017 if (d->current && ok) { |
|
2018 Q3ListBoxItem * i = d->current; |
|
2019 QString tmp = d->current->text(); |
|
2020 emit selected(currentItem()); |
|
2021 emit selected(i); |
|
2022 if (!tmp.isNull()) |
|
2023 emit selected(tmp); |
|
2024 emit doubleClicked(i); |
|
2025 } |
|
2026 } |
|
2027 |
|
2028 |
|
2029 /*! \reimp */ |
|
2030 |
|
2031 void Q3ListBox::mouseMoveEvent(QMouseEvent *e) |
|
2032 { |
|
2033 Q3ListBoxItem * i = itemAt(e->pos()); |
|
2034 if (i != d->highlighted) { |
|
2035 if (i) { |
|
2036 emit onItem(i); |
|
2037 } else { |
|
2038 emit onViewport(); |
|
2039 } |
|
2040 d->highlighted = i; |
|
2041 } |
|
2042 |
|
2043 if (d->rubber) { |
|
2044 QRect r = d->rubber->normalized(); |
|
2045 drawRubber(); |
|
2046 d->rubber->setCoords(d->rubber->x(), d->rubber->y(), e->x(), e->y()); |
|
2047 doRubberSelection(r, d->rubber->normalized()); |
|
2048 drawRubber(); |
|
2049 return; |
|
2050 } |
|
2051 |
|
2052 if (((e->state() & (Qt::RightButton | Qt::LeftButton | Qt::MidButton)) == 0) || |
|
2053 d->ignoreMoves) |
|
2054 return; |
|
2055 |
|
2056 // hack to keep the combo (and what else?) working: if we get a |
|
2057 // move outside the listbox without having seen a press, discard |
|
2058 // it. |
|
2059 if (!QRect(0, 0, visibleWidth(), visibleHeight()).contains(e->pos()) && |
|
2060 ((d->mousePressColumn < 0 && d->mousePressRow < 0) |
|
2061 || (e->state() == Qt::NoButton && !d->pressedItem))) |
|
2062 return; |
|
2063 |
|
2064 // figure out in what direction to drag-select and perhaps scroll |
|
2065 int dx = 0; |
|
2066 int x = e->x(); |
|
2067 if (x >= visibleWidth()) { |
|
2068 x = visibleWidth()-1; |
|
2069 dx = 1; |
|
2070 } else if (x < 0) { |
|
2071 x = 0; |
|
2072 dx = -1; |
|
2073 } |
|
2074 d->mouseMoveColumn = columnAt(x + contentsX()); |
|
2075 |
|
2076 // sanitize mousePressColumn, if we got here without a mouse press event |
|
2077 if (d->mousePressColumn < 0 && d->mouseMoveColumn >= 0) |
|
2078 d->mousePressColumn = d->mouseMoveColumn; |
|
2079 if (d->mousePressColumn < 0 && d->currentColumn >= 0) |
|
2080 d->mousePressColumn = d->currentColumn; |
|
2081 |
|
2082 // if it's beyond the last column, use the last one |
|
2083 if (d->mouseMoveColumn < 0) |
|
2084 d->mouseMoveColumn = dx >= 0 ? numColumns()-1 : 0; |
|
2085 |
|
2086 // repeat for y |
|
2087 int dy = 0; |
|
2088 int y = e->y(); |
|
2089 if (y >= visibleHeight()) { |
|
2090 y = visibleHeight()-1; |
|
2091 dy = 1; |
|
2092 } else if (y < 0) { |
|
2093 y = 0; |
|
2094 dy = -1; |
|
2095 } |
|
2096 d->mouseMoveRow = rowAt(y + contentsY()); |
|
2097 |
|
2098 if (d->mousePressRow < 0 && d->mouseMoveRow >= 0) |
|
2099 d->mousePressRow = d->mouseMoveRow; |
|
2100 if (d->mousePressRow < 0 && d->currentRow >= 0) |
|
2101 d->mousePressRow = d->currentRow; |
|
2102 |
|
2103 if (d->mousePressRow < 0) |
|
2104 d->mousePressRow = rowAt(x + contentsX()); |
|
2105 |
|
2106 d->scrollPos = QPoint(dx, dy); |
|
2107 |
|
2108 if ((dx || dy) && !d->scrollTimer && e->state() == Qt::LeftButton && e->button() != Qt::LeftButton) { |
|
2109 // start autoscrolling if necessary |
|
2110 d->scrollTimer = new QTimer(this); |
|
2111 connect(d->scrollTimer, SIGNAL(timeout()), |
|
2112 this, SLOT(doAutoScroll())); |
|
2113 d->scrollTimer->start(100, false); |
|
2114 doAutoScroll(); |
|
2115 } else if (!d->scrollTimer) { |
|
2116 // or just select the required bits |
|
2117 updateSelection(); |
|
2118 } |
|
2119 } |
|
2120 |
|
2121 |
|
2122 |
|
2123 void Q3ListBox::updateSelection() |
|
2124 { |
|
2125 if (d->mouseMoveColumn >= 0 && d->mouseMoveRow >= 0 && |
|
2126 d->mousePressColumn >= 0 && d->mousePressRow >= 0) { |
|
2127 Q3ListBoxItem * i = item(d->mouseMoveColumn * numRows() + |
|
2128 d->mouseMoveRow); |
|
2129 #ifndef QT_NO_ACCESSIBILITY |
|
2130 int ind = index(i); |
|
2131 #endif |
|
2132 if (selectionMode() == Single || selectionMode() == NoSelection) { |
|
2133 if (i && (d->mouseInternalPress || (windowType() == Qt::Popup))) |
|
2134 setCurrentItem(i); |
|
2135 } else { |
|
2136 if (d->selectionMode == Extended && ( |
|
2137 (d->current == d->pressedItem && d->pressedSelected) || |
|
2138 (d->dirtyDrag && !d->dragging))) { |
|
2139 if (d->dirtyDrag && !d->dragging) // emit after dragging stops |
|
2140 d->dirtyDrag = false; |
|
2141 else |
|
2142 clearSelection(); // don't reset drag-selected items |
|
2143 d->pressedItem = 0; |
|
2144 if (i && i->isSelectable()) { |
|
2145 bool block = signalsBlocked(); |
|
2146 blockSignals(true); |
|
2147 i->s = true; |
|
2148 blockSignals(block); |
|
2149 emit selectionChanged(); |
|
2150 #ifndef QT_NO_ACCESSIBILITY |
|
2151 QAccessible::updateAccessibility(viewport(), ind+1, QAccessible::StateChanged); |
|
2152 QAccessible::updateAccessibility(viewport(), 0, QAccessible::Selection); |
|
2153 QAccessible::updateAccessibility(viewport(), ind+1, QAccessible::SelectionAdd); |
|
2154 #endif |
|
2155 } |
|
2156 triggerUpdate(false); |
|
2157 } else { |
|
2158 int c = qMin(d->mouseMoveColumn, d->mousePressColumn); |
|
2159 int r = qMin(d->mouseMoveRow, d->mousePressRow); |
|
2160 int c2 = qMax(d->mouseMoveColumn, d->mousePressColumn); |
|
2161 int r2 = qMax(d->mouseMoveRow, d->mousePressRow); |
|
2162 bool changed = false; |
|
2163 while(c <= c2) { |
|
2164 Q3ListBoxItem * i = item(c*numRows()+r); |
|
2165 int rtmp = r; |
|
2166 while(i && rtmp <= r2) { |
|
2167 if ((bool)i->s != (bool)d->select && i->isSelectable()) { |
|
2168 i->s = d->select; |
|
2169 #ifndef QT_NO_ACCESSIBILITY |
|
2170 QAccessible::updateAccessibility(viewport(), ind+1, QAccessible::StateChanged); |
|
2171 QAccessible::updateAccessibility(viewport(), ind+1, d->select ? QAccessible::SelectionAdd : QAccessible::SelectionRemove); |
|
2172 #endif |
|
2173 i->dirty = true; |
|
2174 d->dirtyDrag = changed = true; |
|
2175 } |
|
2176 i = i->n; |
|
2177 rtmp++; |
|
2178 } |
|
2179 c++; |
|
2180 } |
|
2181 if (changed) { |
|
2182 if (!d->dragging) // emit after dragging stops instead |
|
2183 emit selectionChanged(); |
|
2184 #ifndef QT_NO_ACCESSIBILITY |
|
2185 QAccessible::updateAccessibility(viewport(), 0, QAccessible::Selection); |
|
2186 #endif |
|
2187 triggerUpdate(false); |
|
2188 } |
|
2189 } |
|
2190 if (i) |
|
2191 setCurrentItem(i); |
|
2192 } |
|
2193 } |
|
2194 } |
|
2195 |
|
2196 void Q3ListBox::repaintSelection() |
|
2197 { |
|
2198 if (d->numColumns == 1) { |
|
2199 for (uint i = topItem(); itemVisible(i) && i < count(); ++i) { |
|
2200 Q3ListBoxItem *it = item(i); |
|
2201 if (!it) |
|
2202 break; |
|
2203 if (it->isSelected()) |
|
2204 updateItem(it); |
|
2205 } |
|
2206 } else { |
|
2207 for (uint i = 0; i < count(); ++i) { |
|
2208 Q3ListBoxItem *it = item(i); |
|
2209 if (!it) |
|
2210 break; |
|
2211 if (it->isSelected()) |
|
2212 updateItem(it); |
|
2213 } |
|
2214 } |
|
2215 } |
|
2216 |
|
2217 /*! \reimp |
|
2218 */ |
|
2219 |
|
2220 void Q3ListBox::contentsContextMenuEvent(QContextMenuEvent *e) |
|
2221 { |
|
2222 if (!receivers(SIGNAL(contextMenuRequested(Q3ListBoxItem*,QPoint)))) { |
|
2223 e->ignore(); |
|
2224 return; |
|
2225 } |
|
2226 if (e->reason() == QContextMenuEvent::Keyboard) { |
|
2227 Q3ListBoxItem *i = item(currentItem()); |
|
2228 if (i) { |
|
2229 QRect r = itemRect(i); |
|
2230 emit contextMenuRequested(i, mapToGlobal(r.topLeft() + QPoint(width() / 2, r.height() / 2))); |
|
2231 } |
|
2232 } else { |
|
2233 Q3ListBoxItem * i = itemAt(contentsToViewport(e->pos())); |
|
2234 emit contextMenuRequested(i, e->globalPos()); |
|
2235 } |
|
2236 } |
|
2237 |
|
2238 /*!\reimp |
|
2239 */ |
|
2240 void Q3ListBox::keyPressEvent(QKeyEvent *e) |
|
2241 { |
|
2242 if ((e->key() == Qt::Key_Tab || e->key() == Qt::Key_Backtab) |
|
2243 && e->state() & Qt::ControlButton) |
|
2244 e->ignore(); |
|
2245 |
|
2246 if (count() == 0) { |
|
2247 e->ignore(); |
|
2248 return; |
|
2249 } |
|
2250 |
|
2251 QPointer<Q3ListBox> selfCheck = this; |
|
2252 |
|
2253 Q3ListBoxItem *old = d->current; |
|
2254 if (!old) { |
|
2255 setCurrentItem(d->head); |
|
2256 if (d->selectionMode == Single) |
|
2257 setSelected(d->head, true); |
|
2258 e->ignore(); |
|
2259 return; |
|
2260 } |
|
2261 |
|
2262 bool selectCurrent = false; |
|
2263 switch (e->key()) { |
|
2264 case Qt::Key_Up: |
|
2265 { |
|
2266 d->currInputString.clear(); |
|
2267 if (currentItem() > 0) { |
|
2268 setCurrentItem(currentItem() - 1); |
|
2269 handleItemChange(old, e->state() & Qt::ShiftButton, e->state() & Qt::ControlButton); |
|
2270 } |
|
2271 if (!(e->state() & Qt::ShiftButton) || !d->selectAnchor) |
|
2272 d->selectAnchor = d->current; |
|
2273 } |
|
2274 break; |
|
2275 case Qt::Key_Down: |
|
2276 { |
|
2277 d->currInputString.clear(); |
|
2278 if (currentItem() < (int)count() - 1) { |
|
2279 setCurrentItem(currentItem() + 1); |
|
2280 handleItemChange(old, e->state() & Qt::ShiftButton, e->state() & Qt::ControlButton); |
|
2281 } |
|
2282 if (!(e->state() & Qt::ShiftButton) || !d->selectAnchor) |
|
2283 d->selectAnchor = d->current; |
|
2284 } |
|
2285 break; |
|
2286 case Qt::Key_Left: |
|
2287 { |
|
2288 d->currInputString.clear(); |
|
2289 if (currentColumn() > 0) { |
|
2290 setCurrentItem(currentItem() - numRows()); |
|
2291 handleItemChange(old, e->state() & Qt::ShiftButton, e->state() & Qt::ControlButton); |
|
2292 } else if (numColumns() > 1 && currentItem() > 0) { |
|
2293 int row = currentRow(); |
|
2294 setCurrentItem(currentRow() - 1 + (numColumns() - 1) * numRows()); |
|
2295 |
|
2296 if (currentItem() == -1) |
|
2297 setCurrentItem(row - 1 + (numColumns() - 2) * numRows()); |
|
2298 |
|
2299 handleItemChange(old, e->state() & Qt::ShiftButton, e->state() & Qt::ControlButton); |
|
2300 } else { |
|
2301 QApplication::sendEvent(horizontalScrollBar(), e); |
|
2302 } |
|
2303 if (!(e->state() & Qt::ShiftButton) || !d->selectAnchor) |
|
2304 d->selectAnchor = d->current; |
|
2305 } |
|
2306 break; |
|
2307 case Qt::Key_Right: |
|
2308 { |
|
2309 d->currInputString.clear(); |
|
2310 if (currentColumn() < numColumns()-1) { |
|
2311 int row = currentRow(); |
|
2312 int i = currentItem(); |
|
2313 Q3ListBoxItem *it = item(i + numRows()); |
|
2314 if (!it) |
|
2315 it = item(count()-1); |
|
2316 setCurrentItem(it); |
|
2317 |
|
2318 if (currentItem() == -1) { |
|
2319 if (row < numRows() - 1) |
|
2320 setCurrentItem(row + 1); |
|
2321 else |
|
2322 setCurrentItem(i); |
|
2323 } |
|
2324 |
|
2325 handleItemChange(old, e->state() & Qt::ShiftButton, e->state() & Qt::ControlButton); |
|
2326 } else if (numColumns() > 1 && currentRow() < numRows()) { |
|
2327 if (currentRow() + 1 < numRows()) { |
|
2328 setCurrentItem(currentRow() + 1); |
|
2329 handleItemChange(old, e->state() & Qt::ShiftButton, e->state() & Qt::ControlButton); |
|
2330 } |
|
2331 } else { |
|
2332 QApplication::sendEvent(horizontalScrollBar(), e); |
|
2333 } |
|
2334 if (!(e->state() & Qt::ShiftButton) || !d->selectAnchor) |
|
2335 d->selectAnchor = d->current; |
|
2336 } |
|
2337 break; |
|
2338 case Qt::Key_Next: |
|
2339 { |
|
2340 d->currInputString.clear(); |
|
2341 int i = 0; |
|
2342 if (numColumns() == 1) { |
|
2343 i = currentItem() + numItemsVisible(); |
|
2344 i = i > (int)count() - 1 ? (int)count() - 1 : i; |
|
2345 setCurrentItem(i); |
|
2346 setBottomItem(i); |
|
2347 } else { |
|
2348 // I'm not sure about this behavior... |
|
2349 if (currentRow() == numRows() - 1) |
|
2350 i = currentItem() + numRows(); |
|
2351 else |
|
2352 i = currentItem() + numRows() - currentRow() - 1; |
|
2353 i = i > (int)count() - 1 ? (int)count() - 1 : i; |
|
2354 setCurrentItem(i); |
|
2355 } |
|
2356 handleItemChange(old, e->state() & Qt::ShiftButton, e->state() & Qt::ControlButton); |
|
2357 if (!(e->state() & Qt::ShiftButton) || !d->selectAnchor) |
|
2358 d->selectAnchor = d->current; |
|
2359 } |
|
2360 break; |
|
2361 case Qt::Key_Prior: |
|
2362 { |
|
2363 selectCurrent = true; |
|
2364 d->currInputString.clear(); |
|
2365 int i; |
|
2366 if (numColumns() == 1) { |
|
2367 i = currentItem() - numItemsVisible(); |
|
2368 i = i < 0 ? 0 : i; |
|
2369 setCurrentItem(i); |
|
2370 setTopItem(i); |
|
2371 } else { |
|
2372 // I'm not sure about this behavior... |
|
2373 if (currentRow() == 0) |
|
2374 i = currentItem() - numRows(); |
|
2375 else |
|
2376 i = currentItem() - currentRow(); |
|
2377 i = i < 0 ? 0 : i; |
|
2378 setCurrentItem(i); |
|
2379 } |
|
2380 handleItemChange(old, e->state() & Qt::ShiftButton, e->state() & Qt::ControlButton); |
|
2381 if (!(e->state() & Qt::ShiftButton) || !d->selectAnchor) |
|
2382 d->selectAnchor = d->current; |
|
2383 } |
|
2384 break; |
|
2385 case Qt::Key_Space: |
|
2386 { |
|
2387 selectCurrent = true; |
|
2388 d->currInputString.clear(); |
|
2389 toggleCurrentItem(); |
|
2390 if (selectionMode() == Extended && d->current->isSelected()) |
|
2391 emit highlighted(currentItem()); |
|
2392 if (selfCheck && (!(e->state() & Qt::ShiftButton) || !d->selectAnchor)) |
|
2393 d->selectAnchor = d->current; |
|
2394 } |
|
2395 break; |
|
2396 case Qt::Key_Return: |
|
2397 case Qt::Key_Enter: |
|
2398 { |
|
2399 selectCurrent = true; |
|
2400 d->currInputString.clear(); |
|
2401 if (currentItem() >= 0 && selectionMode() != NoSelection) { |
|
2402 QString tmp = item(currentItem())->text(); |
|
2403 emit selected(currentItem()); |
|
2404 emit selected(item(currentItem())); |
|
2405 if (!tmp.isEmpty()) |
|
2406 emit selected(tmp); |
|
2407 emit returnPressed(item(currentItem())); |
|
2408 } |
|
2409 if (selfCheck && (!(e->state() & Qt::ShiftButton) || !d->selectAnchor)) |
|
2410 d->selectAnchor = d->current; |
|
2411 } |
|
2412 break; |
|
2413 case Qt::Key_Home: |
|
2414 { |
|
2415 selectCurrent = true; |
|
2416 d->currInputString.clear(); |
|
2417 setCurrentItem(0); |
|
2418 handleItemChange(old, e->state() & Qt::ShiftButton, e->state() & Qt::ControlButton); |
|
2419 if (!(e->state() & Qt::ShiftButton) || !d->selectAnchor) |
|
2420 d->selectAnchor = d->current; |
|
2421 } |
|
2422 break; |
|
2423 case Qt::Key_End: |
|
2424 { |
|
2425 selectCurrent = true; |
|
2426 d->currInputString.clear(); |
|
2427 int i = (int)count() - 1; |
|
2428 setCurrentItem(i); |
|
2429 handleItemChange(old, e->state() & Qt::ShiftButton, e->state() & Qt::ControlButton); |
|
2430 if (!(e->state() & Qt::ShiftButton) || !d->selectAnchor) |
|
2431 d->selectAnchor = d->current; |
|
2432 } |
|
2433 break; |
|
2434 default: |
|
2435 { |
|
2436 if (!e->text().isEmpty() && e->text()[0].isPrint() && count()) { |
|
2437 int curItem = currentItem(); |
|
2438 if (curItem == -1) |
|
2439 curItem = 0; |
|
2440 if (!d->inputTimer->isActive()) { |
|
2441 d->currInputString = e->text(); |
|
2442 curItem = d->findItemByName(++curItem, d->currInputString); |
|
2443 } else { |
|
2444 d->inputTimer->stop(); |
|
2445 d->currInputString += e->text(); |
|
2446 int oldCurItem = curItem; |
|
2447 curItem = d->findItemByName(curItem, d->currInputString); |
|
2448 if (curItem < 0) { |
|
2449 curItem = d->findItemByName(++oldCurItem, e->text()); |
|
2450 d->currInputString = e->text(); |
|
2451 } |
|
2452 } |
|
2453 if (curItem >= 0) |
|
2454 setCurrentItem(curItem); |
|
2455 if (curItem >= 0 && selectionMode() == Q3ListBox::Extended) { |
|
2456 bool changed = false; |
|
2457 bool block = signalsBlocked(); |
|
2458 blockSignals(true); |
|
2459 selectAll(false); |
|
2460 blockSignals(block); |
|
2461 Q3ListBoxItem *i = item(curItem); |
|
2462 if (!i->s && i->isSelectable()) { |
|
2463 changed = true; |
|
2464 i->s = true; |
|
2465 updateItem(i); |
|
2466 } |
|
2467 if (changed) |
|
2468 emit selectionChanged(); |
|
2469 } |
|
2470 d->inputTimer->start(400, true); |
|
2471 } else { |
|
2472 d->currInputString.clear(); |
|
2473 if (e->state() & Qt::ControlButton) { |
|
2474 switch (e->key()) { |
|
2475 case Qt::Key_A: |
|
2476 selectAll(true); |
|
2477 break; |
|
2478 } |
|
2479 } else { |
|
2480 e->ignore(); |
|
2481 } |
|
2482 } |
|
2483 } |
|
2484 } |
|
2485 |
|
2486 if (selfCheck && selectCurrent && selectionMode() == Single && |
|
2487 d->current && !d->current->s) { |
|
2488 updateItem(d->current); |
|
2489 setSelected(d->current, true); |
|
2490 } |
|
2491 } |
|
2492 |
|
2493 |
|
2494 /*!\reimp |
|
2495 */ |
|
2496 void Q3ListBox::focusInEvent(QFocusEvent *e) |
|
2497 { |
|
2498 d->mousePressRow = -1; |
|
2499 d->mousePressColumn = -1; |
|
2500 d->inMenuMode = false; |
|
2501 if (e->reason() != Qt::MouseFocusReason && !d->current && d->head) { |
|
2502 d->current = d->head; |
|
2503 Q3ListBoxItem *i = d->current; |
|
2504 QString tmp; |
|
2505 if (i) |
|
2506 tmp = i->text(); |
|
2507 int tmp2 = index(i); |
|
2508 emit highlighted(i); |
|
2509 if (!tmp.isNull()) |
|
2510 emit highlighted(tmp); |
|
2511 emit highlighted(tmp2); |
|
2512 emit currentChanged(i); |
|
2513 } |
|
2514 if (style()->styleHint(QStyle::SH_ItemView_ChangeHighlightOnFocus, 0, this)) |
|
2515 repaintSelection(); |
|
2516 |
|
2517 if (d->current) |
|
2518 updateItem(currentItem()); |
|
2519 } |
|
2520 |
|
2521 |
|
2522 /*!\reimp |
|
2523 */ |
|
2524 void Q3ListBox::focusOutEvent(QFocusEvent *e) |
|
2525 { |
|
2526 if (style()->styleHint(QStyle::SH_ItemView_ChangeHighlightOnFocus, 0, this)) { |
|
2527 d->inMenuMode = |
|
2528 e->reason() == Qt::PopupFocusReason || |
|
2529 (qApp->focusWidget() && qApp->focusWidget()->inherits("QMenuBar")); |
|
2530 if (!d->inMenuMode) |
|
2531 repaintSelection(); |
|
2532 } |
|
2533 |
|
2534 if (d->current) |
|
2535 updateItem(currentItem()); |
|
2536 } |
|
2537 |
|
2538 /*!\reimp |
|
2539 */ |
|
2540 bool Q3ListBox::eventFilter(QObject *o, QEvent *e) |
|
2541 { |
|
2542 return Q3ScrollView::eventFilter(o, e); |
|
2543 } |
|
2544 |
|
2545 /*! |
|
2546 Repaints the item at position \a index in the list. |
|
2547 */ |
|
2548 |
|
2549 void Q3ListBox::updateItem(int index) |
|
2550 { |
|
2551 if (index >= 0) |
|
2552 updateItem(item(index)); |
|
2553 } |
|
2554 |
|
2555 |
|
2556 /*! |
|
2557 \overload |
|
2558 |
|
2559 Repaints the Q3ListBoxItem \a i. |
|
2560 */ |
|
2561 |
|
2562 void Q3ListBox::updateItem(Q3ListBoxItem * i) |
|
2563 { |
|
2564 if (!i) |
|
2565 return; |
|
2566 i->dirty = true; |
|
2567 d->updateTimer->start(0, true); |
|
2568 } |
|
2569 |
|
2570 |
|
2571 /*! |
|
2572 \property Q3ListBox::selectionMode |
|
2573 \brief the selection mode of the list box |
|
2574 |
|
2575 Sets the list box's selection mode, which may be one of \c Single |
|
2576 (the default), \c Extended, \c Multi or \c NoSelection. |
|
2577 |
|
2578 \sa SelectionMode |
|
2579 */ |
|
2580 |
|
2581 void Q3ListBox::setSelectionMode(SelectionMode mode) |
|
2582 { |
|
2583 if (d->selectionMode == mode) |
|
2584 return; |
|
2585 |
|
2586 if ((selectionMode() == Multi || selectionMode() == Extended) |
|
2587 && (mode == Q3ListBox::Single || mode == Q3ListBox::NoSelection)){ |
|
2588 clearSelection(); |
|
2589 if ((mode == Q3ListBox::Single) && currentItem()) |
|
2590 setSelected(currentItem(), true); |
|
2591 } |
|
2592 |
|
2593 d->selectionMode = mode; |
|
2594 triggerUpdate(true); |
|
2595 } |
|
2596 |
|
2597 |
|
2598 Q3ListBox::SelectionMode Q3ListBox::selectionMode() const |
|
2599 { |
|
2600 return d->selectionMode; |
|
2601 } |
|
2602 |
|
2603 |
|
2604 /*! |
|
2605 \property Q3ListBox::multiSelection |
|
2606 \brief whether or not the list box is in Multi selection mode |
|
2607 |
|
2608 Consider using the \l Q3ListBox::selectionMode property instead of |
|
2609 this property. |
|
2610 |
|
2611 When setting this property, Multi selection mode is used if set to true and |
|
2612 to Single selection mode if set to false. |
|
2613 |
|
2614 When getting this property, true is returned if the list box is in |
|
2615 Multi selection mode or Extended selection mode, and false if it is |
|
2616 in Single selection mode or NoSelection mode. |
|
2617 |
|
2618 \sa selectionMode |
|
2619 */ |
|
2620 |
|
2621 bool Q3ListBox::isMultiSelection() const |
|
2622 { |
|
2623 return selectionMode() == Multi || selectionMode() == Extended; |
|
2624 } |
|
2625 |
|
2626 void Q3ListBox::setMultiSelection(bool enable) |
|
2627 { |
|
2628 setSelectionMode(enable ? Multi : Single); |
|
2629 } |
|
2630 |
|
2631 |
|
2632 /*! |
|
2633 Toggles the selection status of currentItem() and repaints if the |
|
2634 list box is a \c Multi selection list box. |
|
2635 |
|
2636 \sa setMultiSelection() |
|
2637 */ |
|
2638 |
|
2639 void Q3ListBox::toggleCurrentItem() |
|
2640 { |
|
2641 if (selectionMode() == Single || |
|
2642 selectionMode() == NoSelection || |
|
2643 !d->current) |
|
2644 return; |
|
2645 |
|
2646 if (d->current->s || d->current->isSelectable()) { |
|
2647 d->current->s = !d->current->s; |
|
2648 emit selectionChanged(); |
|
2649 #ifndef QT_NO_ACCESSIBILITY |
|
2650 int ind = index(d->current); |
|
2651 QAccessible::updateAccessibility(viewport(), 0, QAccessible::Selection); |
|
2652 QAccessible::updateAccessibility(viewport(), ind+1, QAccessible::StateChanged); |
|
2653 QAccessible::updateAccessibility(viewport(), ind+1, d->current->s ? QAccessible::SelectionAdd : QAccessible::SelectionRemove); |
|
2654 #endif |
|
2655 } |
|
2656 updateItem(d->current); |
|
2657 } |
|
2658 |
|
2659 |
|
2660 /*! |
|
2661 \overload |
|
2662 |
|
2663 If \a select is true the item at position \a index is selected; |
|
2664 otherwise the item is deselected. |
|
2665 */ |
|
2666 |
|
2667 void Q3ListBox::setSelected(int index, bool select) |
|
2668 { |
|
2669 setSelected(item(index), select); |
|
2670 } |
|
2671 |
|
2672 |
|
2673 /*! |
|
2674 Selects \a item if \a select is true or unselects it if \a select |
|
2675 is false, and repaints the item appropriately. |
|
2676 |
|
2677 If the list box is a \c Single selection list box and \a select is |
|
2678 true, setSelected() calls setCurrentItem(). |
|
2679 |
|
2680 If the list box is a \c Single selection list box, \a select is |
|
2681 false, setSelected() calls clearSelection(). |
|
2682 |
|
2683 \sa setMultiSelection(), setCurrentItem(), clearSelection(), currentItem() |
|
2684 */ |
|
2685 |
|
2686 void Q3ListBox::setSelected(Q3ListBoxItem * item, bool select) |
|
2687 { |
|
2688 if (!item || !item->isSelectable() || |
|
2689 (bool)item->s == select || d->selectionMode == NoSelection) |
|
2690 return; |
|
2691 |
|
2692 int ind = index(item); |
|
2693 bool emitHighlighted = (d->current != item) || ( select && (item->s != (uint) select) ); |
|
2694 if (selectionMode() == Single) { |
|
2695 if (d->current != item) { |
|
2696 Q3ListBoxItem *o = d->current; |
|
2697 if (d->current && d->current->s) |
|
2698 d->current->s = false; |
|
2699 d->current = item; |
|
2700 #ifndef QT_NO_ACCESSIBILITY |
|
2701 QAccessible::updateAccessibility(viewport(), ind+1, QAccessible::Focus); |
|
2702 #endif |
|
2703 d->currentColumn = ind / numRows(); |
|
2704 d->currentRow = ind % numRows(); |
|
2705 |
|
2706 if (o) |
|
2707 updateItem(o); |
|
2708 } |
|
2709 } |
|
2710 |
|
2711 item->s = (uint)select; |
|
2712 updateItem(item); |
|
2713 |
|
2714 if (d->selectionMode == Single && select) { |
|
2715 emit selectionChanged(item); |
|
2716 #ifndef QT_NO_ACCESSIBILITY |
|
2717 QAccessible::updateAccessibility(viewport(), ind+1, QAccessible::StateChanged); |
|
2718 #endif |
|
2719 } |
|
2720 emit selectionChanged(); |
|
2721 #ifndef QT_NO_ACCESSIBILITY |
|
2722 QAccessible::updateAccessibility(viewport(), 0, QAccessible::Selection); |
|
2723 if (d->selectionMode != Single) |
|
2724 QAccessible::updateAccessibility(viewport(), ind+1, select ? QAccessible::SelectionAdd : QAccessible::SelectionRemove); |
|
2725 #endif |
|
2726 |
|
2727 if (emitHighlighted) { |
|
2728 QString tmp; |
|
2729 if (item) |
|
2730 tmp = item->text(); |
|
2731 int tmp2 = index(item); |
|
2732 emit highlighted(item); |
|
2733 if (!tmp.isNull()) |
|
2734 emit highlighted(tmp); |
|
2735 emit highlighted(tmp2); |
|
2736 emit currentChanged(item); |
|
2737 } |
|
2738 } |
|
2739 |
|
2740 |
|
2741 /*! |
|
2742 Returns true if item \a i is selected; otherwise returns false. |
|
2743 */ |
|
2744 |
|
2745 bool Q3ListBox::isSelected(int i) const |
|
2746 { |
|
2747 if (selectionMode() == Single && i != currentItem()) |
|
2748 return false; |
|
2749 |
|
2750 Q3ListBoxItem * lbi = item(i); |
|
2751 if (!lbi) |
|
2752 return false; // should not happen |
|
2753 return lbi->s; |
|
2754 } |
|
2755 |
|
2756 |
|
2757 /*! |
|
2758 \overload |
|
2759 |
|
2760 Returns true if item \a i is selected; otherwise returns false. |
|
2761 */ |
|
2762 |
|
2763 bool Q3ListBox::isSelected(const Q3ListBoxItem * i) const |
|
2764 { |
|
2765 if (!i) |
|
2766 return false; |
|
2767 |
|
2768 return i->s; |
|
2769 } |
|
2770 |
|
2771 /*! Returns the selected item if the list box is in |
|
2772 single-selection mode and an item is selected. |
|
2773 |
|
2774 If no items are selected or the list box is in another selection mode |
|
2775 this function returns 0. |
|
2776 |
|
2777 \sa setSelected() setMultiSelection() |
|
2778 */ |
|
2779 |
|
2780 Q3ListBoxItem* Q3ListBox::selectedItem() const |
|
2781 { |
|
2782 if (d->selectionMode != Single) |
|
2783 return 0; |
|
2784 if (isSelected(currentItem())) |
|
2785 return d->current; |
|
2786 return 0; |
|
2787 } |
|
2788 |
|
2789 |
|
2790 /*! |
|
2791 Deselects all items, if possible. |
|
2792 |
|
2793 Note that a \c Single selection list box will automatically select |
|
2794 an item if it has keyboard focus. |
|
2795 */ |
|
2796 |
|
2797 void Q3ListBox::clearSelection() |
|
2798 { |
|
2799 selectAll(false); |
|
2800 } |
|
2801 |
|
2802 /*! |
|
2803 In \c Multi and \c Extended modes, this function sets all items to |
|
2804 be selected if \a select is true, and to be unselected if \a |
|
2805 select is false. |
|
2806 |
|
2807 In \c Single and \c NoSelection modes, this function only changes |
|
2808 the selection status of currentItem(). |
|
2809 */ |
|
2810 |
|
2811 void Q3ListBox::selectAll(bool select) |
|
2812 { |
|
2813 if (selectionMode() == Multi || selectionMode() == Extended) { |
|
2814 bool b = signalsBlocked(); |
|
2815 blockSignals(true); |
|
2816 for (int i = 0; i < (int)count(); i++) |
|
2817 setSelected(i, select); |
|
2818 blockSignals(b); |
|
2819 emit selectionChanged(); |
|
2820 } else if (d->current) { |
|
2821 Q3ListBoxItem * i = d->current; |
|
2822 setSelected(i, select); |
|
2823 } |
|
2824 } |
|
2825 |
|
2826 /*! |
|
2827 Inverts the selection. Only works in \c Multi and \c Extended |
|
2828 selection mode. |
|
2829 */ |
|
2830 |
|
2831 void Q3ListBox::invertSelection() |
|
2832 { |
|
2833 if (d->selectionMode == Single || |
|
2834 d->selectionMode == NoSelection) |
|
2835 return; |
|
2836 |
|
2837 bool b = signalsBlocked(); |
|
2838 blockSignals(true); |
|
2839 for (int i = 0; i < (int)count(); i++) |
|
2840 setSelected(i, !item(i)->isSelected()); |
|
2841 blockSignals(b); |
|
2842 emit selectionChanged(); |
|
2843 } |
|
2844 |
|
2845 |
|
2846 /*! |
|
2847 Not used anymore; provided for compatibility. |
|
2848 */ |
|
2849 |
|
2850 void Q3ListBox::emitChangedSignal(bool) |
|
2851 { |
|
2852 } |
|
2853 |
|
2854 |
|
2855 /*! \reimp */ |
|
2856 |
|
2857 QSize Q3ListBox::sizeHint() const |
|
2858 { |
|
2859 if (cachedSizeHint().isValid()) |
|
2860 return cachedSizeHint(); |
|
2861 |
|
2862 ensurePolished(); |
|
2863 doLayout(); |
|
2864 |
|
2865 int i=0; |
|
2866 while(i < 10 && |
|
2867 i < (int)d->columnPos.size()-1 && |
|
2868 d->columnPos[i] < 200) |
|
2869 i++; |
|
2870 int x; |
|
2871 x = qMin(200, d->columnPos[i] + |
|
2872 2 * style()->pixelMetric(QStyle::PM_DefaultFrameWidth)); |
|
2873 x = qMax(40, x); |
|
2874 |
|
2875 i = 0; |
|
2876 while(i < 10 && |
|
2877 i < (int)d->rowPos.size()-1 && |
|
2878 d->rowPos[i] < 200) |
|
2879 i++; |
|
2880 int y; |
|
2881 y = qMin(200, d->rowPos[i] + |
|
2882 2 * style()->pixelMetric(QStyle::PM_DefaultFrameWidth)); |
|
2883 y = qMax(40, y); |
|
2884 |
|
2885 QSize s(x, y); |
|
2886 setCachedSizeHint(s); |
|
2887 return s; |
|
2888 } |
|
2889 |
|
2890 /*! |
|
2891 \reimp |
|
2892 */ |
|
2893 |
|
2894 QSize Q3ListBox::minimumSizeHint() const |
|
2895 { |
|
2896 return Q3ScrollView::minimumSizeHint(); |
|
2897 } |
|
2898 |
|
2899 |
|
2900 /*! |
|
2901 Ensures that a single paint event will occur at the end of the |
|
2902 current event loop iteration. If \a doLayout is true, the layout |
|
2903 is also redone. |
|
2904 */ |
|
2905 |
|
2906 void Q3ListBox::triggerUpdate(bool doLayout) |
|
2907 { |
|
2908 if (doLayout) |
|
2909 d->layoutDirty = d->mustPaintAll = true; |
|
2910 d->updateTimer->start(0, true); |
|
2911 } |
|
2912 |
|
2913 |
|
2914 void Q3ListBox::setColumnMode(LayoutMode mode) |
|
2915 { |
|
2916 if (mode == Variable) |
|
2917 return; |
|
2918 d->rowModeWins = false; |
|
2919 d->columnMode = mode; |
|
2920 triggerUpdate(true); |
|
2921 } |
|
2922 |
|
2923 |
|
2924 void Q3ListBox::setColumnMode(int columns) |
|
2925 { |
|
2926 if (columns < 1) |
|
2927 columns = 1; |
|
2928 d->columnMode = FixedNumber; |
|
2929 d->numColumns = columns; |
|
2930 d->rowModeWins = false; |
|
2931 triggerUpdate(true); |
|
2932 } |
|
2933 |
|
2934 void Q3ListBox::setRowMode(LayoutMode mode) |
|
2935 { |
|
2936 if (mode == Variable) |
|
2937 return; |
|
2938 d->rowModeWins = true; |
|
2939 d->rowMode = mode; |
|
2940 triggerUpdate(true); |
|
2941 } |
|
2942 |
|
2943 |
|
2944 void Q3ListBox::setRowMode(int rows) |
|
2945 { |
|
2946 if (rows < 1) |
|
2947 rows = 1; |
|
2948 d->rowMode = FixedNumber; |
|
2949 d->numRows = rows; |
|
2950 d->rowModeWins = true; |
|
2951 triggerUpdate(true); |
|
2952 } |
|
2953 |
|
2954 /*! |
|
2955 \property Q3ListBox::columnMode |
|
2956 \brief the column layout mode for this list box. |
|
2957 |
|
2958 setColumnMode() sets the layout mode and adjusts the number of |
|
2959 displayed columns. The row layout mode automatically becomes \c |
|
2960 Variable, unless the column mode is \c Variable. |
|
2961 |
|
2962 \sa setRowMode() rowMode numColumns |
|
2963 */ |
|
2964 |
|
2965 |
|
2966 Q3ListBox::LayoutMode Q3ListBox::columnMode() const |
|
2967 { |
|
2968 if (d->rowModeWins) |
|
2969 return Variable; |
|
2970 else |
|
2971 return d->columnMode; |
|
2972 } |
|
2973 |
|
2974 |
|
2975 /*! |
|
2976 \property Q3ListBox::rowMode |
|
2977 \brief the row layout mode for this list box |
|
2978 |
|
2979 This property is normally \c Variable. |
|
2980 |
|
2981 setRowMode() sets the layout mode and adjusts the number of |
|
2982 displayed rows. The column layout mode automatically becomes \c |
|
2983 Variable, unless the row mode is \c Variable. |
|
2984 |
|
2985 \sa columnMode |
|
2986 */ |
|
2987 |
|
2988 |
|
2989 Q3ListBox::LayoutMode Q3ListBox::rowMode() const |
|
2990 { |
|
2991 if (d->rowModeWins) |
|
2992 return d->rowMode; |
|
2993 else |
|
2994 return Variable; |
|
2995 } |
|
2996 |
|
2997 |
|
2998 /*! |
|
2999 \property Q3ListBox::numColumns |
|
3000 \brief the number of columns in the list box |
|
3001 |
|
3002 This is normally 1, but can be different if \l |
|
3003 Q3ListBox::columnMode or \l Q3ListBox::rowMode has been set. |
|
3004 |
|
3005 \sa columnMode rowMode numRows |
|
3006 */ |
|
3007 |
|
3008 int Q3ListBox::numColumns() const |
|
3009 { |
|
3010 if (count() == 0) |
|
3011 return 0; |
|
3012 if (!d->rowModeWins && d->columnMode == FixedNumber) |
|
3013 return d->numColumns; |
|
3014 doLayout(); |
|
3015 return d->columnPos.size()-1; |
|
3016 } |
|
3017 |
|
3018 |
|
3019 /*! |
|
3020 \property Q3ListBox::numRows |
|
3021 \brief the number of rows in the list box. |
|
3022 |
|
3023 This is equal to the number of items in the default single-column |
|
3024 layout, but can be different. |
|
3025 |
|
3026 \sa columnMode rowMode numColumns |
|
3027 */ |
|
3028 |
|
3029 int Q3ListBox::numRows() const |
|
3030 { |
|
3031 if (count() == 0) |
|
3032 return 0; |
|
3033 if (d->rowModeWins && d->rowMode == FixedNumber) |
|
3034 return d->numRows; |
|
3035 doLayout(); |
|
3036 return d->rowPos.size()-1; |
|
3037 } |
|
3038 |
|
3039 |
|
3040 /*! |
|
3041 This function does the hard layout work. You should never need to |
|
3042 call it. |
|
3043 */ |
|
3044 |
|
3045 void Q3ListBox::doLayout() const |
|
3046 { |
|
3047 if (!d->layoutDirty || d->resizeTimer->isActive()) |
|
3048 return; |
|
3049 ensurePolished(); |
|
3050 int c = count(); |
|
3051 switch(rowMode()) { |
|
3052 case FixedNumber: |
|
3053 // columnMode() is known to be Variable |
|
3054 tryGeometry(d->numRows, (c+d->numRows-1)/d->numRows); |
|
3055 break; |
|
3056 case FitToHeight: |
|
3057 // columnMode() is known to be Variable |
|
3058 if (d->head) { |
|
3059 // this is basically the FitToWidth code, but edited to use rows. |
|
3060 int maxh = 0; |
|
3061 Q3ListBoxItem * i = d->head; |
|
3062 while (i) { |
|
3063 int h = i->height(this); |
|
3064 if (maxh < h) |
|
3065 maxh = h; |
|
3066 i = i->n; |
|
3067 } |
|
3068 int vh = viewportSize(1, 1).height(); |
|
3069 do { |
|
3070 int rows = vh / maxh; |
|
3071 if (rows > c) |
|
3072 rows = c; |
|
3073 if (rows < 1) |
|
3074 rows = 1; |
|
3075 if (variableHeight() && rows < c) { |
|
3076 do { |
|
3077 ++rows; |
|
3078 tryGeometry(rows, (c+rows-1)/rows); |
|
3079 } while (rows <= c && |
|
3080 d->rowPos[(int)d->rowPos.size()-1] <= vh); |
|
3081 --rows; |
|
3082 } |
|
3083 tryGeometry(rows, (c+rows-1)/rows); |
|
3084 int nvh = viewportSize(d->columnPos[(int)d->columnPos.size()-1], |
|
3085 d->rowPos[(int)d->rowPos.size()-1]).height(); |
|
3086 if (nvh < vh) |
|
3087 vh = nvh; |
|
3088 } while (d->rowPos.size() > 2 && |
|
3089 vh < d->rowPos[(int)d->rowPos.size()-1]); |
|
3090 } else { |
|
3091 tryGeometry(1, 1); |
|
3092 } |
|
3093 break; |
|
3094 case Variable: |
|
3095 if (columnMode() == FixedNumber) { |
|
3096 tryGeometry((count()+d->numColumns-1)/d->numColumns, |
|
3097 d->numColumns); |
|
3098 } else if (d->head) { // FitToWidth, at least one item |
|
3099 int maxw = 0; |
|
3100 Q3ListBoxItem * i = d->head; |
|
3101 while (i) { |
|
3102 int w = i->width(this); |
|
3103 if (maxw < w) |
|
3104 maxw = w; |
|
3105 i = i->n; |
|
3106 } |
|
3107 int vw = viewportSize(1, 1).width(); |
|
3108 do { |
|
3109 int cols = vw / maxw; |
|
3110 if (cols > c) |
|
3111 cols = c; |
|
3112 if (cols < 1) |
|
3113 cols = 1; |
|
3114 if (variableWidth() && cols < c) { |
|
3115 do { |
|
3116 ++cols; |
|
3117 tryGeometry((c+cols-1)/cols, cols); |
|
3118 } while (cols <= c && |
|
3119 d->columnPos[(int)d->columnPos.size()-1] <= vw); |
|
3120 --cols; |
|
3121 } |
|
3122 tryGeometry((c+cols-1)/cols, cols); |
|
3123 int nvw = viewportSize(d->columnPos[(int)d->columnPos.size()-1], |
|
3124 d->rowPos[(int)d->rowPos.size()-1]).width(); |
|
3125 if (nvw < vw) |
|
3126 vw = nvw; |
|
3127 } while (d->columnPos.size() > 2 && |
|
3128 vw < d->columnPos[(int)d->columnPos.size()-1]); |
|
3129 } else { |
|
3130 tryGeometry(1, 1); |
|
3131 } |
|
3132 break; |
|
3133 } |
|
3134 |
|
3135 d->layoutDirty = false; |
|
3136 int w = d->columnPos[(int)d->columnPos.size()-1]; |
|
3137 int h = d->rowPos[(int)d->rowPos.size()-1]; |
|
3138 QSize s(viewportSize(w, h)); |
|
3139 w = qMax(w, s.width()); |
|
3140 |
|
3141 d->columnPosOne = d->columnPos[1]; |
|
3142 // extend the column for simple single-column listboxes |
|
3143 if (columnMode() == FixedNumber && d->numColumns == 1 && |
|
3144 d->columnPos[1] < w) |
|
3145 d->columnPos[1] = w; |
|
3146 ((Q3ListBox *)this)->resizeContents(w, h); |
|
3147 } |
|
3148 |
|
3149 |
|
3150 /*! |
|
3151 Lay the items out in a \a columns by \a rows array. The array may |
|
3152 be too big: doLayout() is expected to call this with the right |
|
3153 values. |
|
3154 */ |
|
3155 |
|
3156 void Q3ListBox::tryGeometry(int rows, int columns) const |
|
3157 { |
|
3158 if (columns < 1) |
|
3159 columns = 1; |
|
3160 d->columnPos.resize(columns+1); |
|
3161 |
|
3162 if (rows < 1) |
|
3163 rows = 1; |
|
3164 d->rowPos.resize(rows+1); |
|
3165 |
|
3166 // funky hack I: dump the height/width of each column/row in |
|
3167 // {column,row}Pos for later conversion to positions. |
|
3168 int c; |
|
3169 for(c=0; c<=columns; c++) |
|
3170 d->columnPos[c] = 0; |
|
3171 int r; |
|
3172 for(r=0; r<=rows; r++) |
|
3173 d->rowPos[r] = 0; |
|
3174 r = c = 0; |
|
3175 Q3ListBoxItem * i = d->head; |
|
3176 while (i && c < columns) { |
|
3177 if (i == d->current) { |
|
3178 d->currentRow = r; |
|
3179 d->currentColumn = c; |
|
3180 } |
|
3181 |
|
3182 int w = i->width(this); |
|
3183 if (d->columnPos[c] < w) |
|
3184 d->columnPos[c] = w; |
|
3185 int h = i->height(this); |
|
3186 if (d->rowPos[r] < h) |
|
3187 d->rowPos[r] = h; |
|
3188 i = i->n; |
|
3189 r++; |
|
3190 if (r == rows) { |
|
3191 r = 0; |
|
3192 c++; |
|
3193 } |
|
3194 } |
|
3195 // funky hack II: if not variable {width,height}, unvariablify it. |
|
3196 if (!variableWidth()) { |
|
3197 int w = 0; |
|
3198 for(c=0; c<columns; c++) |
|
3199 if (w < d->columnPos[c]) |
|
3200 w = d->columnPos[c]; |
|
3201 for(c=0; c<columns; c++) |
|
3202 d->columnPos[c] = w; |
|
3203 } |
|
3204 if (!variableHeight()) { |
|
3205 int h = 0; |
|
3206 for(r=0; r<rows; r++) |
|
3207 if (h < d->rowPos[r]) |
|
3208 h = d->rowPos[r]; |
|
3209 for(r=0; r<rows; r++) |
|
3210 d->rowPos[r] = h; |
|
3211 } |
|
3212 // repair the hacking. |
|
3213 int x = 0; |
|
3214 for(c=0; c<=columns; c++) { |
|
3215 int w = d->columnPos[c]; |
|
3216 d->columnPos[c] = x; |
|
3217 x += w; |
|
3218 } |
|
3219 int y = 0; |
|
3220 for(r=0; r<=rows; r++) { |
|
3221 int h = d->rowPos[r]; |
|
3222 d->rowPos[r] = y; |
|
3223 y += h; |
|
3224 } |
|
3225 } |
|
3226 |
|
3227 |
|
3228 /*! |
|
3229 Returns the row index of the current item, or -1 if no item is the |
|
3230 current item. |
|
3231 */ |
|
3232 |
|
3233 int Q3ListBox::currentRow() const |
|
3234 { |
|
3235 if (!d->current) |
|
3236 return -1; |
|
3237 if (d->currentRow < 0) |
|
3238 d->layoutDirty = true; |
|
3239 if (d->layoutDirty) |
|
3240 doLayout(); |
|
3241 return d->currentRow; |
|
3242 } |
|
3243 |
|
3244 |
|
3245 /*! |
|
3246 Returns the column index of the current item, or -1 if no item is |
|
3247 the current item. |
|
3248 */ |
|
3249 |
|
3250 int Q3ListBox::currentColumn() const |
|
3251 { |
|
3252 if (!d->current) |
|
3253 return -1; |
|
3254 if (d->currentColumn < 0) |
|
3255 d->layoutDirty = true; |
|
3256 if (d->layoutDirty) |
|
3257 doLayout(); |
|
3258 return d->currentColumn; |
|
3259 } |
|
3260 |
|
3261 |
|
3262 void Q3ListBox::setTopItem(int index) |
|
3263 { |
|
3264 if (index >= (int)count() || count() == 0) |
|
3265 return; |
|
3266 int col = index / numRows(); |
|
3267 int y = d->rowPos[index-col*numRows()]; |
|
3268 if (d->columnPos[col] >= contentsX() && |
|
3269 d->columnPos[col+1] <= contentsX() + visibleWidth()) |
|
3270 setContentsPos(contentsX(), y); |
|
3271 else |
|
3272 setContentsPos(d->columnPos[col], y); |
|
3273 } |
|
3274 |
|
3275 /*! |
|
3276 Scrolls the list box so the item at position \a index in the list |
|
3277 is displayed in the bottom row of the list box. |
|
3278 |
|
3279 \sa setTopItem() |
|
3280 */ |
|
3281 |
|
3282 void Q3ListBox::setBottomItem(int index) |
|
3283 { |
|
3284 if (index >= (int)count() || count() == 0) |
|
3285 return; |
|
3286 int col = index / numRows(); |
|
3287 int y = d->rowPos[1+index-col*numRows()] - visibleHeight(); |
|
3288 if (y < 0) |
|
3289 y = 0; |
|
3290 if (d->columnPos[col] >= contentsX() && |
|
3291 d->columnPos[col+1] <= contentsX() + visibleWidth()) |
|
3292 setContentsPos(contentsX(), y); |
|
3293 else |
|
3294 setContentsPos(d->columnPos[col], y); |
|
3295 } |
|
3296 |
|
3297 |
|
3298 /*! |
|
3299 Returns the item at point \a p, specified in viewport coordinates, |
|
3300 or a 0 if there is no item at \a p. |
|
3301 |
|
3302 Use contentsToViewport() to convert between widget coordinates and |
|
3303 viewport coordinates. |
|
3304 */ |
|
3305 |
|
3306 Q3ListBoxItem * Q3ListBox::itemAt(const QPoint& p) const |
|
3307 { |
|
3308 if (d->layoutDirty) |
|
3309 doLayout(); |
|
3310 QPoint np = p; |
|
3311 |
|
3312 np -= viewport()->pos(); |
|
3313 if (!viewport()->rect().contains(np)) |
|
3314 return 0; |
|
3315 |
|
3316 // take into account contents position |
|
3317 np = viewportToContents(np); |
|
3318 |
|
3319 int x = np.x(); |
|
3320 int y = np.y(); |
|
3321 |
|
3322 // return 0 when y is below the last row |
|
3323 if (y > d->rowPos[numRows()]) |
|
3324 return 0; |
|
3325 |
|
3326 int col = columnAt(x); |
|
3327 int row = rowAt(y); |
|
3328 |
|
3329 Q3ListBoxItem *i = item(col * numRows() + row); |
|
3330 if (i && numColumns() > 1) { |
|
3331 if (d->columnPos[col] + i->width(this) >= x) |
|
3332 return i; |
|
3333 } else { |
|
3334 if (d->columnPos[col + 1] >= x) |
|
3335 return i; |
|
3336 } |
|
3337 return 0; |
|
3338 } |
|
3339 |
|
3340 |
|
3341 /*! |
|
3342 Ensures that the current item is visible. |
|
3343 */ |
|
3344 |
|
3345 void Q3ListBox::ensureCurrentVisible() |
|
3346 { |
|
3347 if (!d->current) |
|
3348 return; |
|
3349 |
|
3350 doLayout(); |
|
3351 |
|
3352 int row = currentRow(); |
|
3353 int column = currentColumn(); |
|
3354 int w = (d->columnPos[column+1] - d->columnPos[column]) / 2; |
|
3355 int h = (d->rowPos[row+1] - d->rowPos[row]) / 2; |
|
3356 // next four lines are Bad. they mean that for pure left-to-right |
|
3357 // languages, textual list box items are displayed better than |
|
3358 // before when there is little space. for non-textual items, or |
|
3359 // other languages, it means... that you really should have enough |
|
3360 // space in the first place :) |
|
3361 if (numColumns() == 1) |
|
3362 w = 0; |
|
3363 if (w*2 > viewport()->width()) |
|
3364 w = viewport()->width()/2; |
|
3365 |
|
3366 ensureVisible(d->columnPos[column] + w, d->rowPos[row] + h, w, h); |
|
3367 } |
|
3368 |
|
3369 |
|
3370 /*! \internal */ |
|
3371 |
|
3372 void Q3ListBox::doAutoScroll() |
|
3373 { |
|
3374 if (d->scrollPos.x() < 0) { |
|
3375 // scroll left |
|
3376 int x = contentsX() - horizontalScrollBar()->singleStep(); |
|
3377 if (x < 0) |
|
3378 x = 0; |
|
3379 if (x != contentsX()) { |
|
3380 d->mouseMoveColumn = columnAt(x); |
|
3381 updateSelection(); |
|
3382 if (x < contentsX()) |
|
3383 setContentsPos(x, contentsY()); |
|
3384 } |
|
3385 } else if (d->scrollPos.x() > 0) { |
|
3386 // scroll right |
|
3387 int x = contentsX() + horizontalScrollBar()->singleStep(); |
|
3388 if (x + visibleWidth() > contentsWidth()) |
|
3389 x = contentsWidth() - visibleWidth(); |
|
3390 if (x != contentsX()) { |
|
3391 d->mouseMoveColumn = columnAt(x + visibleWidth() - 1); |
|
3392 updateSelection(); |
|
3393 if (x > contentsX()) |
|
3394 setContentsPos(x, contentsY()); |
|
3395 } |
|
3396 } |
|
3397 |
|
3398 if (d->scrollPos.y() < 0) { |
|
3399 // scroll up |
|
3400 int y = contentsY() - verticalScrollBar()->singleStep(); |
|
3401 if (y < 0) |
|
3402 y = 0; |
|
3403 if (y != contentsY()) { |
|
3404 y = contentsY() - verticalScrollBar()->singleStep(); |
|
3405 d->mouseMoveRow = rowAt(y); |
|
3406 updateSelection(); |
|
3407 } |
|
3408 } else if (d->scrollPos.y() > 0) { |
|
3409 // scroll down |
|
3410 int y = contentsY() + verticalScrollBar()->singleStep(); |
|
3411 if (y + visibleHeight() > contentsHeight()) |
|
3412 y = contentsHeight() - visibleHeight(); |
|
3413 if (y != contentsY()) { |
|
3414 y = contentsY() + verticalScrollBar()->singleStep(); |
|
3415 d->mouseMoveRow = rowAt(y + visibleHeight() - 1); |
|
3416 updateSelection(); |
|
3417 } |
|
3418 } |
|
3419 |
|
3420 if (d->scrollPos == QPoint(0, 0)) { |
|
3421 delete d->scrollTimer; |
|
3422 d->scrollTimer = 0; |
|
3423 } |
|
3424 } |
|
3425 |
|
3426 |
|
3427 /*! |
|
3428 \property Q3ListBox::topItem |
|
3429 \brief the index of an item at the top of the screen. |
|
3430 |
|
3431 When getting this property and the listbox has multiple columns, |
|
3432 an arbitrary item is selected and returned. |
|
3433 |
|
3434 When setting this property, the list box is scrolled so the item |
|
3435 at position \e index in the list is displayed in the top row of |
|
3436 the list box. |
|
3437 */ |
|
3438 |
|
3439 int Q3ListBox::topItem() const |
|
3440 { |
|
3441 doLayout(); |
|
3442 |
|
3443 // move rightwards to the best column |
|
3444 int col = columnAt(contentsX()); |
|
3445 int row = rowAt(contentsY()); |
|
3446 return col * numRows() + row; |
|
3447 } |
|
3448 |
|
3449 |
|
3450 /*! |
|
3451 \property Q3ListBox::variableHeight |
|
3452 \brief whether this list box has variable-height rows |
|
3453 |
|
3454 When the list box has variable-height rows (the default), each row |
|
3455 is as high as the highest item in that row. When it has same-sized |
|
3456 rows, all rows are as high as the highest item in the list box. |
|
3457 |
|
3458 \sa variableWidth |
|
3459 */ |
|
3460 |
|
3461 bool Q3ListBox::variableHeight() const |
|
3462 { |
|
3463 return d->variableHeight; |
|
3464 } |
|
3465 |
|
3466 |
|
3467 void Q3ListBox::setVariableHeight(bool enable) |
|
3468 { |
|
3469 if ((bool)d->variableHeight == enable) |
|
3470 return; |
|
3471 |
|
3472 d->variableHeight = enable; |
|
3473 triggerUpdate(true); |
|
3474 } |
|
3475 |
|
3476 |
|
3477 /*! |
|
3478 \property Q3ListBox::variableWidth |
|
3479 \brief whether this list box has variable-width columns |
|
3480 |
|
3481 When the list box has variable-width columns, each column is as |
|
3482 wide as the widest item in that column. When it has same-sized |
|
3483 columns (the default), all columns are as wide as the widest item |
|
3484 in the list box. |
|
3485 |
|
3486 \sa variableHeight |
|
3487 */ |
|
3488 |
|
3489 bool Q3ListBox::variableWidth() const |
|
3490 { |
|
3491 return d->variableWidth; |
|
3492 } |
|
3493 |
|
3494 |
|
3495 void Q3ListBox::setVariableWidth(bool enable) |
|
3496 { |
|
3497 if ((bool)d->variableWidth == enable) |
|
3498 return; |
|
3499 |
|
3500 d->variableWidth = enable; |
|
3501 triggerUpdate(true); |
|
3502 } |
|
3503 |
|
3504 |
|
3505 /*! |
|
3506 Repaints only what really needs to be repainted. |
|
3507 */ |
|
3508 void Q3ListBox::refreshSlot() |
|
3509 { |
|
3510 if (d->mustPaintAll || |
|
3511 d->layoutDirty) { |
|
3512 d->mustPaintAll = false; |
|
3513 bool currentItemVisible = itemVisible(currentItem()); |
|
3514 doLayout(); |
|
3515 if (hasFocus() && |
|
3516 currentItemVisible && |
|
3517 d->currentColumn >= 0 && |
|
3518 d->currentRow >= 0 && |
|
3519 (d->columnPos[d->currentColumn] < contentsX() || |
|
3520 d->columnPos[d->currentColumn+1]>contentsX()+visibleWidth() || |
|
3521 d->rowPos[d->currentRow] < contentsY() || |
|
3522 d->rowPos[d->currentRow+1] > contentsY()+visibleHeight())) |
|
3523 ensureCurrentVisible(); |
|
3524 viewport()->repaint(); |
|
3525 return; |
|
3526 } |
|
3527 |
|
3528 QRegion r; |
|
3529 int x = contentsX(); |
|
3530 int y = contentsY(); |
|
3531 int col = columnAt(x); |
|
3532 int row = rowAt(y); |
|
3533 int top = row; |
|
3534 while(col < (int)d->columnPos.size()-1 && d->columnPos[col+1] < x) |
|
3535 col++; |
|
3536 while(top < (int)d->rowPos.size()-1 && d->rowPos[top+1] < y) |
|
3537 top++; |
|
3538 Q3ListBoxItem * i = item(col * numRows() + row); |
|
3539 |
|
3540 while (i && (int)col < numColumns() && |
|
3541 d->columnPos[col] < x + visibleWidth() ) { |
|
3542 int cw = d->columnPos[col+1] - d->columnPos[col]; |
|
3543 while (i && row < numRows() && d->rowPos[row] < |
|
3544 y + visibleHeight()) { |
|
3545 if (i->dirty) |
|
3546 r = r.united(QRect(d->columnPos[col] - x, d->rowPos[row] - y, |
|
3547 cw, d->rowPos[row+1] - d->rowPos[row])); |
|
3548 row++; |
|
3549 i = i->n; |
|
3550 } |
|
3551 col++; |
|
3552 if (numColumns() > 1) { |
|
3553 row = top; |
|
3554 i = item(col * numRows() + row); |
|
3555 } |
|
3556 } |
|
3557 |
|
3558 if (r.isEmpty()) |
|
3559 viewport()->repaint(); |
|
3560 else |
|
3561 viewport()->repaint(r); |
|
3562 } |
|
3563 |
|
3564 |
|
3565 /*! \reimp */ |
|
3566 |
|
3567 void Q3ListBox::viewportPaintEvent(QPaintEvent * e) |
|
3568 { |
|
3569 doLayout(); |
|
3570 QWidget* vp = viewport(); |
|
3571 QPainter p(vp); |
|
3572 QRegion r = e->region(); |
|
3573 |
|
3574 #if 0 |
|
3575 { |
|
3576 // this stuff has been useful enough times that from now I'm |
|
3577 // leaving it in the source. |
|
3578 uint i = 0; |
|
3579 qDebug("%s/%s: %i rects", className(), name(), r.rects().size()); |
|
3580 while(i < r.rects().size()) { |
|
3581 qDebug("rect %d: %d, %d, %d, %d", i, |
|
3582 r.rects()[i].left(), r.rects()[i].top(), |
|
3583 r.rects()[i].width(), r.rects()[i].height()); |
|
3584 i++; |
|
3585 } |
|
3586 qDebug(""); |
|
3587 } |
|
3588 #endif |
|
3589 |
|
3590 int x = contentsX(); |
|
3591 int y = contentsY(); |
|
3592 int w = vp->width(); |
|
3593 int h = vp->height(); |
|
3594 |
|
3595 int col = columnAt(x); |
|
3596 int top = rowAt(y); |
|
3597 int row = top; |
|
3598 |
|
3599 Q3ListBoxItem * i = item(col*numRows() + row); |
|
3600 |
|
3601 const QPalette &pal = palette(); |
|
3602 p.setPen(pal.text().color()); |
|
3603 p.setBackground(palette().brush(backgroundRole()).color()); |
|
3604 while (i && (int)col < numColumns() && d->columnPos[col] < x + w) { |
|
3605 int cw = d->columnPos[col+1] - d->columnPos[col]; |
|
3606 while (i && (int)row < numRows() && d->rowPos[row] < y + h) { |
|
3607 int ch = d->rowPos[row+1] - d->rowPos[row]; |
|
3608 QRect itemRect(d->columnPos[col]-x, d->rowPos[row]-y, cw, ch); |
|
3609 QRegion tempRegion(itemRect); |
|
3610 QRegion itemPaintRegion(tempRegion.intersected(r )); |
|
3611 if (!itemPaintRegion.isEmpty()) { |
|
3612 p.save(); |
|
3613 p.setClipRegion(itemPaintRegion); |
|
3614 p.translate(d->columnPos[col]-x, d->rowPos[row]-y); |
|
3615 paintCell(&p, row, col); |
|
3616 p.restore(); |
|
3617 r = r.subtracted(itemPaintRegion); |
|
3618 } |
|
3619 row++; |
|
3620 if (i->dirty) { |
|
3621 // reset dirty flag only if the entire item was painted |
|
3622 if (itemPaintRegion == QRegion(itemRect)) |
|
3623 i->dirty = false; |
|
3624 } |
|
3625 i = i->n; |
|
3626 } |
|
3627 col++; |
|
3628 if (numColumns() > 1) { |
|
3629 row = top; |
|
3630 i = item(col * numRows() + row); |
|
3631 } |
|
3632 } |
|
3633 |
|
3634 if (r.isEmpty()) |
|
3635 return; |
|
3636 p.setClipRegion(r); |
|
3637 p.fillRect(0, 0, w, h, viewport()->palette().brush(viewport()->backgroundRole())); |
|
3638 |
|
3639 if(d->rubber && d->rubber->width() && d->rubber->height()) { |
|
3640 p.save(); |
|
3641 p.setClipping(false); |
|
3642 // p.setRasterOp(NotROP); // ### fix - use qrubberband instead |
|
3643 QStyleOptionRubberBand opt; |
|
3644 opt.rect = d->rubber->normalized(); |
|
3645 opt.palette = palette(); |
|
3646 opt.shape = QRubberBand::Rectangle; |
|
3647 opt.opaque = false; |
|
3648 style()->drawControl(QStyle::CE_RubberBand, &opt, &p, this); |
|
3649 p.restore(); |
|
3650 } |
|
3651 } |
|
3652 |
|
3653 |
|
3654 /*! |
|
3655 Returns the height in pixels of the item with index \a index. \a |
|
3656 index defaults to 0. |
|
3657 |
|
3658 If \a index is too large, this function returns 0. |
|
3659 */ |
|
3660 |
|
3661 int Q3ListBox::itemHeight(int index) const |
|
3662 { |
|
3663 if (index >= (int)count() || index < 0) |
|
3664 return 0; |
|
3665 int r = index % numRows(); |
|
3666 return d->rowPos[r+1] - d->rowPos[r]; |
|
3667 } |
|
3668 |
|
3669 |
|
3670 /*! |
|
3671 Returns the index of the column at \a x, which is in the listbox's |
|
3672 coordinates, not in on-screen coordinates. |
|
3673 |
|
3674 If there is no column that spans \a x, columnAt() returns -1. |
|
3675 */ |
|
3676 |
|
3677 int Q3ListBox::columnAt(int x) const |
|
3678 { |
|
3679 if (x < 0) |
|
3680 return -1; |
|
3681 if (!d->columnPos.size()) |
|
3682 return -1; |
|
3683 if (x >= d->columnPos[(int)d->columnPos.size()-1]) |
|
3684 return numColumns() - 1; |
|
3685 |
|
3686 int col = 0; |
|
3687 while(col < (int)d->columnPos.size()-1 && d->columnPos[col+1] < x) |
|
3688 col++; |
|
3689 return col; |
|
3690 } |
|
3691 |
|
3692 |
|
3693 /*! |
|
3694 Returns the index of the row at \a y, which is in the listbox's |
|
3695 coordinates, not in on-screen coordinates. |
|
3696 |
|
3697 If there is no row that spans \a y, rowAt() returns -1. |
|
3698 */ |
|
3699 |
|
3700 int Q3ListBox::rowAt(int y) const |
|
3701 { |
|
3702 if (y < 0) |
|
3703 return -1; |
|
3704 |
|
3705 // find the top item, use bsearch for speed |
|
3706 int l = 0; |
|
3707 int r = d->rowPos.size() - 2; |
|
3708 if (r < 0) |
|
3709 return -1; |
|
3710 if (l <= d->rowPosCache && d->rowPosCache <= r) { |
|
3711 if (d->rowPos[qMax(l, d->rowPosCache - 10)] <= y |
|
3712 && y <= d->rowPos[qMin(r, d->rowPosCache + 10)]) { |
|
3713 l = qMax(l, d->rowPosCache - 10); |
|
3714 r = qMin(r, d->rowPosCache + 10); |
|
3715 } |
|
3716 } |
|
3717 int i = ((l+r+1) / 2); |
|
3718 while (r - l) { |
|
3719 if (d->rowPos[i] > y) |
|
3720 r = i -1; |
|
3721 else |
|
3722 l = i; |
|
3723 i = ((l+r+1) / 2); |
|
3724 } |
|
3725 d->rowPosCache = i; |
|
3726 if (d->rowPos[i] <= y && y <= d->rowPos[i+1] ) |
|
3727 return i; |
|
3728 |
|
3729 return d->count - 1; |
|
3730 } |
|
3731 |
|
3732 |
|
3733 /*! |
|
3734 Returns the rectangle on the screen that \a item occupies in |
|
3735 viewport()'s coordinates, or an invalid rectangle if \a item is 0 |
|
3736 or is not currently visible. |
|
3737 */ |
|
3738 |
|
3739 QRect Q3ListBox::itemRect(Q3ListBoxItem *item) const |
|
3740 { |
|
3741 if (d->resizeTimer->isActive()) |
|
3742 return QRect(0, 0, -1, -1); |
|
3743 if (!item) |
|
3744 return QRect(0, 0, -1, -1); |
|
3745 |
|
3746 int i = index(item); |
|
3747 if (i == -1) |
|
3748 return QRect(0, 0, -1, -1); |
|
3749 |
|
3750 int col = i / numRows(); |
|
3751 int row = i % numRows(); |
|
3752 |
|
3753 int x = d->columnPos[col] - contentsX(); |
|
3754 int y = d->rowPos[row] - contentsY(); |
|
3755 |
|
3756 QRect r(x, y, d->columnPos[col + 1] - d->columnPos[col], |
|
3757 d->rowPos[row + 1] - d->rowPos[row]); |
|
3758 if (r.intersects(QRect(0, 0, visibleWidth(), visibleHeight()))) |
|
3759 return r; |
|
3760 return QRect(0, 0, -1, -1); |
|
3761 } |
|
3762 |
|
3763 |
|
3764 /*! |
|
3765 Using this method is quite inefficient. We suggest to use insertItem() |
|
3766 for inserting and sort() afterwards. |
|
3767 |
|
3768 Inserts \a lbi at its sorted position in the list box and returns the |
|
3769 position. |
|
3770 |
|
3771 All items must be inserted with inSort() to maintain the sorting |
|
3772 order. inSort() treats any pixmap (or user-defined type) as |
|
3773 lexicographically less than any string. |
|
3774 |
|
3775 \sa insertItem(), sort() |
|
3776 */ |
|
3777 int Q3ListBox::inSort(const Q3ListBoxItem * lbi) |
|
3778 { |
|
3779 if (!lbi) |
|
3780 return -1; |
|
3781 |
|
3782 Q3ListBoxItem * i = d->head; |
|
3783 int c = 0; |
|
3784 |
|
3785 while(i && i->text() < lbi->text()) { |
|
3786 i = i->n; |
|
3787 c++; |
|
3788 } |
|
3789 insertItem(lbi, c); |
|
3790 return c; |
|
3791 } |
|
3792 |
|
3793 /*! |
|
3794 \overload |
|
3795 Using this method is quite inefficient. We suggest to use insertItem() |
|
3796 for inserting and sort() afterwards. |
|
3797 |
|
3798 Inserts a new item of \a text at its sorted position in the list box and |
|
3799 returns the position. |
|
3800 |
|
3801 All items must be inserted with inSort() to maintain the sorting |
|
3802 order. inSort() treats any pixmap (or user-defined type) as |
|
3803 lexicographically less than any string. |
|
3804 |
|
3805 \sa insertItem(), sort() |
|
3806 */ |
|
3807 int Q3ListBox::inSort(const QString& text) |
|
3808 { |
|
3809 Q3ListBoxItem *lbi = new Q3ListBoxText(text); |
|
3810 |
|
3811 Q3ListBoxItem * i = d->head; |
|
3812 int c = 0; |
|
3813 |
|
3814 while(i && i->text() < lbi->text()) { |
|
3815 i = i->n; |
|
3816 c++; |
|
3817 } |
|
3818 insertItem(lbi, c); |
|
3819 return c; |
|
3820 } |
|
3821 |
|
3822 |
|
3823 /*! \reimp */ |
|
3824 |
|
3825 void Q3ListBox::resizeEvent(QResizeEvent *e) |
|
3826 { |
|
3827 d->layoutDirty = (d->layoutDirty || |
|
3828 rowMode() == FitToHeight || |
|
3829 columnMode() == FitToWidth); |
|
3830 |
|
3831 if (!d->layoutDirty && columnMode() == FixedNumber && |
|
3832 d->numColumns == 1) { |
|
3833 int w = d->columnPosOne; |
|
3834 QSize s(viewportSize(w, contentsHeight())); |
|
3835 w = qMax(w, s.width()); |
|
3836 d->columnPos[1] = qMax(w, d->columnPosOne); |
|
3837 resizeContents(d->columnPos[1], contentsHeight()); |
|
3838 } |
|
3839 |
|
3840 if (d->resizeTimer->isActive()) |
|
3841 d->resizeTimer->stop(); |
|
3842 if (d->rowMode == FixedNumber && d->columnMode == FixedNumber) { |
|
3843 bool currentItemVisible = itemVisible(currentItem()); |
|
3844 doLayout(); |
|
3845 Q3ScrollView::resizeEvent(e); |
|
3846 if (currentItemVisible) |
|
3847 ensureCurrentVisible(); |
|
3848 if (d->current) |
|
3849 viewport()->repaint(itemRect(d->current)); |
|
3850 } else if ((d->columnMode == FitToWidth || d->rowMode == FitToHeight) && !(isVisible())) { |
|
3851 Q3ScrollView::resizeEvent(e); |
|
3852 } else if (d->layoutDirty) { |
|
3853 d->resizeTimer->start(100, true); |
|
3854 resizeContents(contentsWidth() - (e->oldSize().width() - e->size().width()), |
|
3855 contentsHeight() - (e->oldSize().height() - e->size().height())); |
|
3856 Q3ScrollView::resizeEvent(e); |
|
3857 } else { |
|
3858 Q3ScrollView::resizeEvent(e); |
|
3859 } |
|
3860 } |
|
3861 |
|
3862 /*! |
|
3863 \internal |
|
3864 */ |
|
3865 |
|
3866 void Q3ListBox::adjustItems() |
|
3867 { |
|
3868 triggerUpdate(true); |
|
3869 ensureCurrentVisible(); |
|
3870 } |
|
3871 |
|
3872 |
|
3873 /*! |
|
3874 Provided for compatibility with the old Q3ListBox. We recommend |
|
3875 using Q3ListBoxItem::paint() instead. |
|
3876 |
|
3877 Repaints the cell at \a row, \a col using painter \a p. |
|
3878 */ |
|
3879 |
|
3880 void Q3ListBox::paintCell(QPainter * p, int row, int col) |
|
3881 { |
|
3882 bool drawActiveSelection = hasFocus() || d->inMenuMode || |
|
3883 !style()->styleHint(QStyle::SH_ItemView_ChangeHighlightOnFocus, 0, this); |
|
3884 QPalette pal = palette(); |
|
3885 if(!drawActiveSelection) |
|
3886 pal.setCurrentColorGroup(QPalette::Inactive); |
|
3887 |
|
3888 int cw = d->columnPos[col+1] - d->columnPos[col]; |
|
3889 int ch = d->rowPos[row+1] - d->rowPos[row]; |
|
3890 Q3ListBoxItem * i = item(col*numRows()+row); |
|
3891 p->save(); |
|
3892 if (i->s) { |
|
3893 if (i->custom_highlight) { |
|
3894 p->fillRect(0, 0, cw, ch, pal.brush(viewport()->foregroundRole())); |
|
3895 p->setPen(pal.highlightedText().color()); |
|
3896 p->setBackground(pal.highlight()); |
|
3897 } else if (numColumns() == 1) { |
|
3898 p->fillRect(0, 0, cw, ch, pal.brush(QPalette::Highlight)); |
|
3899 p->setPen(pal.highlightedText().color()); |
|
3900 p->setBackground(pal.highlight()); |
|
3901 } else { |
|
3902 int iw = i->width(this); |
|
3903 p->fillRect(0, 0, iw, ch, pal.brush(QPalette::Highlight)); |
|
3904 p->fillRect(iw, 0, cw - iw + 1, ch, viewport()->palette().brush(viewport()->backgroundRole())); |
|
3905 p->setPen(pal.highlightedText().color()); |
|
3906 p->setBackground(pal.highlight()); |
|
3907 } |
|
3908 } else { |
|
3909 p->fillRect(0, 0, cw, ch, viewport()->palette().brush(viewport()->backgroundRole())); |
|
3910 } |
|
3911 |
|
3912 i->paint(p); |
|
3913 |
|
3914 if (d->current == i && hasFocus() && !i->custom_highlight) { |
|
3915 if (numColumns() > 1) |
|
3916 cw = i->width(this); |
|
3917 QStyleOptionFocusRect opt; |
|
3918 opt.rect.setRect(0, 0, cw, ch); |
|
3919 opt.palette = pal; |
|
3920 opt.state = QStyle::State_FocusAtBorder; |
|
3921 if (i->isSelected()) |
|
3922 opt.backgroundColor = pal.highlight().color(); |
|
3923 else |
|
3924 opt.backgroundColor = pal.base().color(); |
|
3925 style()->drawPrimitive(QStyle::PE_FrameFocusRect, &opt, p, this); |
|
3926 } |
|
3927 |
|
3928 p->restore(); |
|
3929 } |
|
3930 |
|
3931 /*! |
|
3932 Returns the width of the widest item in the list box. |
|
3933 */ |
|
3934 |
|
3935 long Q3ListBox::maxItemWidth() const |
|
3936 { |
|
3937 if (d->layoutDirty) |
|
3938 doLayout(); |
|
3939 long m = 0; |
|
3940 int i = d->columnPos.size(); |
|
3941 while(i--) |
|
3942 if (m < d->columnPos[i]) |
|
3943 m = d->columnPos[i]; |
|
3944 return m; |
|
3945 } |
|
3946 |
|
3947 |
|
3948 /*! \reimp */ |
|
3949 |
|
3950 void Q3ListBox::showEvent(QShowEvent *) |
|
3951 { |
|
3952 d->ignoreMoves = false; |
|
3953 d->mousePressRow = -1; |
|
3954 d->mousePressColumn = -1; |
|
3955 d->mustPaintAll = false; |
|
3956 ensureCurrentVisible(); |
|
3957 } |
|
3958 |
|
3959 /*! |
|
3960 \fn bool Q3ListBoxItem::isSelected() const |
|
3961 |
|
3962 Returns true if the item is selected; otherwise returns false. |
|
3963 |
|
3964 \sa Q3ListBox::isSelected(), isCurrent() |
|
3965 */ |
|
3966 |
|
3967 /*! |
|
3968 Returns true if the item is the current item; otherwise returns |
|
3969 false. |
|
3970 |
|
3971 \sa Q3ListBox::currentItem(), Q3ListBox::item(), isSelected() |
|
3972 */ |
|
3973 bool Q3ListBoxItem::isCurrent() const |
|
3974 { |
|
3975 return listBox() && listBox()->hasFocus() && |
|
3976 listBox()->item(listBox()->currentItem()) == this; |
|
3977 } |
|
3978 |
|
3979 /*! |
|
3980 \fn void Q3ListBox::centerCurrentItem() |
|
3981 |
|
3982 If there is a current item, the list box is scrolled so that this |
|
3983 item is displayed centered. |
|
3984 |
|
3985 \sa Q3ListBox::ensureCurrentVisible() |
|
3986 */ |
|
3987 |
|
3988 /*! |
|
3989 Returns a pointer to the list box containing this item. |
|
3990 */ |
|
3991 |
|
3992 Q3ListBox * Q3ListBoxItem::listBox() const |
|
3993 { |
|
3994 return lbox; |
|
3995 } |
|
3996 |
|
3997 |
|
3998 /*! |
|
3999 Removes \a item from the list box and causes an update of the |
|
4000 screen display. The item is not deleted. You should normally not |
|
4001 need to call this function because Q3ListBoxItem::~Q3ListBoxItem() |
|
4002 calls it. The normal way to delete an item is with \c delete. |
|
4003 |
|
4004 \sa Q3ListBox::insertItem() |
|
4005 */ |
|
4006 void Q3ListBox::takeItem(const Q3ListBoxItem * item) |
|
4007 { |
|
4008 if (!item || d->clearing) |
|
4009 return; |
|
4010 d->cache = 0; |
|
4011 d->count--; |
|
4012 if (item == d->last) |
|
4013 d->last = d->last->p; |
|
4014 if (item->p && item->p->n == item) |
|
4015 item->p->n = item->n; |
|
4016 if (item->n && item->n->p == item) |
|
4017 item->n->p = item->p; |
|
4018 if (d->head == item) { |
|
4019 d->head = item->n; |
|
4020 d->currentColumn = d->currentRow = -1; |
|
4021 } |
|
4022 |
|
4023 if (d->current == item) { |
|
4024 d->current = item->n ? item->n : item->p; |
|
4025 Q3ListBoxItem *i = d->current; |
|
4026 QString tmp; |
|
4027 if (i) |
|
4028 tmp = i->text(); |
|
4029 int tmp2 = index(i); |
|
4030 emit highlighted(i); |
|
4031 if (!tmp.isNull()) |
|
4032 emit highlighted(tmp); |
|
4033 emit highlighted(tmp2); |
|
4034 emit currentChanged(i); |
|
4035 } |
|
4036 if (d->tmpCurrent == item) |
|
4037 d->tmpCurrent = d->current; |
|
4038 if (d->selectAnchor == item) |
|
4039 d->selectAnchor = d->current; |
|
4040 |
|
4041 if (item->s) |
|
4042 emit selectionChanged(); |
|
4043 ((Q3ListBoxItem *)item)->lbox = 0; |
|
4044 triggerUpdate(true); |
|
4045 } |
|
4046 |
|
4047 /*! |
|
4048 \internal |
|
4049 Finds the next item after start beginning with \a text. |
|
4050 */ |
|
4051 |
|
4052 int Q3ListBoxPrivate::findItemByName(int start, const QString &text) |
|
4053 { |
|
4054 if (start < 0 || (uint)start >= listBox->count()) |
|
4055 start = 0; |
|
4056 QString match = text.toLower(); |
|
4057 if (match.length() < 1) |
|
4058 return start; |
|
4059 QString curText; |
|
4060 int item = start; |
|
4061 do { |
|
4062 curText = listBox->text(item).toLower(); |
|
4063 if (curText.startsWith(match)) |
|
4064 return item; |
|
4065 item++; |
|
4066 if ((uint)item == listBox->count()) |
|
4067 item = 0; |
|
4068 } while (item != start); |
|
4069 return -1; |
|
4070 } |
|
4071 |
|
4072 /*! |
|
4073 \internal |
|
4074 */ |
|
4075 |
|
4076 void Q3ListBox::clearInputString() |
|
4077 { |
|
4078 d->currInputString.clear(); |
|
4079 } |
|
4080 |
|
4081 /*! |
|
4082 Finds the first list box item that has the text \a text and |
|
4083 returns it, or returns 0 of no such item could be found. If \c |
|
4084 ComparisonFlags are specified in \a compare then these flags |
|
4085 are used, otherwise the default is a case-insensitive, "begins |
|
4086 with" search. |
|
4087 */ |
|
4088 |
|
4089 Q3ListBoxItem *Q3ListBox::findItem(const QString &text, ComparisonFlags compare) const |
|
4090 { |
|
4091 if (text.isEmpty()) |
|
4092 return 0; |
|
4093 |
|
4094 if (compare == CaseSensitive || compare == 0) |
|
4095 compare |= ExactMatch; |
|
4096 |
|
4097 QString itmtxt; |
|
4098 QString comtxt = text; |
|
4099 if (!(compare & CaseSensitive)) |
|
4100 comtxt = text.toLower(); |
|
4101 |
|
4102 Q3ListBoxItem *item; |
|
4103 if (d->current) |
|
4104 item = d->current; |
|
4105 else |
|
4106 item = d->head; |
|
4107 |
|
4108 Q3ListBoxItem *beginsWithItem = 0; |
|
4109 Q3ListBoxItem *endsWithItem = 0; |
|
4110 Q3ListBoxItem *containsItem = 0; |
|
4111 |
|
4112 if (item) { |
|
4113 for (; item; item = item->n) { |
|
4114 if (!(compare & CaseSensitive)) |
|
4115 itmtxt = item->text().toLower(); |
|
4116 else |
|
4117 itmtxt = item->text(); |
|
4118 |
|
4119 if ((compare & ExactMatch)==ExactMatch && itmtxt == comtxt) |
|
4120 return item; |
|
4121 if (compare & BeginsWith && !beginsWithItem && itmtxt.startsWith(comtxt)) |
|
4122 beginsWithItem = containsItem = item; |
|
4123 if (compare & EndsWith && !endsWithItem && itmtxt.endsWith(comtxt)) |
|
4124 endsWithItem = containsItem = item; |
|
4125 if ((compare & ExactMatch)==0 && !containsItem && itmtxt.contains(comtxt)) |
|
4126 containsItem = item; |
|
4127 } |
|
4128 |
|
4129 if (d->current && d->head) { |
|
4130 item = d->head; |
|
4131 for (; item && item != d->current; item = item->n) { |
|
4132 if (!(compare & CaseSensitive)) |
|
4133 itmtxt = item->text().toLower(); |
|
4134 else |
|
4135 itmtxt = item->text(); |
|
4136 |
|
4137 if ((compare & ExactMatch)==ExactMatch && itmtxt == comtxt) |
|
4138 return item; |
|
4139 if (compare & BeginsWith && !beginsWithItem && itmtxt.startsWith(comtxt)) |
|
4140 beginsWithItem = containsItem = item; |
|
4141 if (compare & EndsWith && !endsWithItem && itmtxt.endsWith(comtxt)) |
|
4142 endsWithItem = containsItem = item; |
|
4143 if ((compare & ExactMatch)==0 && !containsItem && itmtxt.contains(comtxt)) |
|
4144 containsItem = item; |
|
4145 } |
|
4146 } |
|
4147 } |
|
4148 |
|
4149 // Obey the priorities |
|
4150 if (beginsWithItem) |
|
4151 return beginsWithItem; |
|
4152 else if (endsWithItem) |
|
4153 return endsWithItem; |
|
4154 else if (containsItem) |
|
4155 return containsItem; |
|
4156 return 0; |
|
4157 } |
|
4158 |
|
4159 /*! |
|
4160 \internal |
|
4161 */ |
|
4162 |
|
4163 void Q3ListBox::drawRubber() |
|
4164 { |
|
4165 if (!d->rubber) |
|
4166 return; |
|
4167 if (!d->rubber->width() && !d->rubber->height()) |
|
4168 return; |
|
4169 update(); |
|
4170 } |
|
4171 |
|
4172 /*! |
|
4173 \internal |
|
4174 */ |
|
4175 |
|
4176 void Q3ListBox::doRubberSelection(const QRect &old, const QRect &rubber) |
|
4177 { |
|
4178 Q3ListBoxItem *i = d->head; |
|
4179 QRect ir, pr; |
|
4180 bool changed = false; |
|
4181 for (; i; i = i->n) { |
|
4182 ir = itemRect(i); |
|
4183 if (ir == QRect(0, 0, -1, -1)) |
|
4184 continue; |
|
4185 if (i->isSelected() && !ir.intersects(rubber) && ir.intersects(old)) { |
|
4186 i->s = false; |
|
4187 pr = pr.united(ir); |
|
4188 changed = true; |
|
4189 } else if (!i->isSelected() && ir.intersects(rubber)) { |
|
4190 if (i->isSelectable()) { |
|
4191 i->s = true; |
|
4192 pr = pr.united(ir); |
|
4193 changed = true; |
|
4194 } |
|
4195 } |
|
4196 } |
|
4197 if (changed) { |
|
4198 emit selectionChanged(); |
|
4199 #ifndef QT_NO_ACCESSIBILITY |
|
4200 QAccessible::updateAccessibility(viewport(), 0, QAccessible::Selection); |
|
4201 #endif |
|
4202 } |
|
4203 viewport()->repaint(pr); |
|
4204 } |
|
4205 |
|
4206 |
|
4207 /*! |
|
4208 Returns true if the user is selecting items using a rubber band |
|
4209 rectangle; otherwise returns false. |
|
4210 */ |
|
4211 |
|
4212 bool Q3ListBox::isRubberSelecting() const |
|
4213 { |
|
4214 return d->rubber != 0; |
|
4215 } |
|
4216 |
|
4217 |
|
4218 /*! |
|
4219 Returns the item that comes after this in the list box. If this is |
|
4220 the last item, 0 is returned. |
|
4221 |
|
4222 \sa prev() |
|
4223 */ |
|
4224 |
|
4225 Q3ListBoxItem *Q3ListBoxItem::next() const |
|
4226 { |
|
4227 return n; |
|
4228 } |
|
4229 |
|
4230 /*! |
|
4231 Returns the item which comes before this in the list box. If this |
|
4232 is the first item, 0 is returned. |
|
4233 |
|
4234 \sa next() |
|
4235 */ |
|
4236 |
|
4237 Q3ListBoxItem *Q3ListBoxItem::prev() const |
|
4238 { |
|
4239 return p; |
|
4240 } |
|
4241 |
|
4242 /*! |
|
4243 Returns the first item in this list box. If the list box is empty, |
|
4244 returns 0. |
|
4245 */ |
|
4246 |
|
4247 Q3ListBoxItem *Q3ListBox::firstItem() const |
|
4248 { |
|
4249 return d->head; |
|
4250 } |
|
4251 |
|
4252 #if defined(Q_C_CALLBACKS) |
|
4253 extern "C" { |
|
4254 #endif |
|
4255 |
|
4256 #ifdef Q_OS_WINCE |
|
4257 static int _cdecl cmpListBoxItems(const void *n1, const void *n2) |
|
4258 #else |
|
4259 static int cmpListBoxItems(const void *n1, const void *n2) |
|
4260 #endif |
|
4261 { |
|
4262 if (!n1 || !n2) |
|
4263 return 0; |
|
4264 |
|
4265 Q3ListBoxPrivate::SortableItem *i1 = (Q3ListBoxPrivate::SortableItem *)n1; |
|
4266 Q3ListBoxPrivate::SortableItem *i2 = (Q3ListBoxPrivate::SortableItem *)n2; |
|
4267 |
|
4268 return i1->item->text().localeAwareCompare(i2->item->text()); |
|
4269 } |
|
4270 |
|
4271 #if defined(Q_C_CALLBACKS) |
|
4272 } |
|
4273 #endif |
|
4274 |
|
4275 /*! |
|
4276 If \a ascending is true sorts the items in ascending order; |
|
4277 otherwise sorts in descending order. |
|
4278 |
|
4279 To compare the items, the text (Q3ListBoxItem::text()) of the items |
|
4280 is used. |
|
4281 */ |
|
4282 |
|
4283 void Q3ListBox::sort(bool ascending) |
|
4284 { |
|
4285 if (count() == 0) |
|
4286 return; |
|
4287 |
|
4288 d->cache = 0; |
|
4289 |
|
4290 Q3ListBoxPrivate::SortableItem *items = new Q3ListBoxPrivate::SortableItem[count()]; |
|
4291 |
|
4292 Q3ListBoxItem *item = d->head; |
|
4293 int i = 0; |
|
4294 for (; item; item = item->n) |
|
4295 items[i++].item = item; |
|
4296 |
|
4297 qsort(items, count(), sizeof(Q3ListBoxPrivate::SortableItem), cmpListBoxItems); |
|
4298 |
|
4299 Q3ListBoxItem *prev = 0; |
|
4300 item = 0; |
|
4301 if (ascending) { |
|
4302 for (i = 0; i < (int)count(); ++i) { |
|
4303 item = items[i].item; |
|
4304 if (item) { |
|
4305 item->p = prev; |
|
4306 item->dirty = true; |
|
4307 if (item->p) |
|
4308 item->p->n = item; |
|
4309 item->n = 0; |
|
4310 } |
|
4311 if (i == 0) |
|
4312 d->head = item; |
|
4313 prev = item; |
|
4314 } |
|
4315 } else { |
|
4316 for (i = (int)count() - 1; i >= 0 ; --i) { |
|
4317 item = items[i].item; |
|
4318 if (item) { |
|
4319 item->p = prev; |
|
4320 item->dirty = true; |
|
4321 if (item->p) |
|
4322 item->p->n = item; |
|
4323 item->n = 0; |
|
4324 } |
|
4325 if (i == (int)count() - 1) |
|
4326 d->head = item; |
|
4327 prev = item; |
|
4328 } |
|
4329 } |
|
4330 d->last = item; |
|
4331 |
|
4332 delete [] items; |
|
4333 |
|
4334 // We have to update explicitly in case the current "vieport" overlaps the |
|
4335 // new viewport we set (starting at (0,0)). |
|
4336 bool haveToUpdate = contentsX() < visibleWidth() || contentsY() < visibleHeight(); |
|
4337 setContentsPos(0, 0); |
|
4338 if (haveToUpdate) |
|
4339 updateContents(0, 0, visibleWidth(), visibleHeight()); |
|
4340 } |
|
4341 |
|
4342 void Q3ListBox::handleItemChange(Q3ListBoxItem *old, bool shift, bool control) |
|
4343 { |
|
4344 if (d->selectionMode == Single) { |
|
4345 // nothing |
|
4346 } else if (d->selectionMode == Extended) { |
|
4347 if (shift) { |
|
4348 selectRange(d->selectAnchor ? d->selectAnchor : old, |
|
4349 d->current, false, true, (d->selectAnchor && !control) ? true : false); |
|
4350 } else if (!control) { |
|
4351 bool block = signalsBlocked(); |
|
4352 blockSignals(true); |
|
4353 selectAll(false); |
|
4354 blockSignals(block); |
|
4355 setSelected(d->current, true); |
|
4356 } |
|
4357 } else if (d->selectionMode == Multi) { |
|
4358 if (shift) |
|
4359 selectRange(old, d->current, true, false); |
|
4360 } |
|
4361 } |
|
4362 |
|
4363 void Q3ListBox::selectRange(Q3ListBoxItem *from, Q3ListBoxItem *to, bool invert, bool includeFirst, bool clearSel) |
|
4364 { |
|
4365 if (!from || !to) |
|
4366 return; |
|
4367 if (from == to && !includeFirst) |
|
4368 return; |
|
4369 Q3ListBoxItem *i = 0; |
|
4370 int index =0; |
|
4371 int f_idx = -1, t_idx = -1; |
|
4372 for (i = d->head; i; i = i->n, index++) { |
|
4373 if (i == from) |
|
4374 f_idx = index; |
|
4375 if (i == to) |
|
4376 t_idx = index; |
|
4377 if (f_idx != -1 && t_idx != -1) |
|
4378 break; |
|
4379 } |
|
4380 if (f_idx > t_idx) { |
|
4381 i = from; |
|
4382 from = to; |
|
4383 to = i; |
|
4384 if (!includeFirst) |
|
4385 to = to->prev(); |
|
4386 } else { |
|
4387 if (!includeFirst) |
|
4388 from = from->next(); |
|
4389 } |
|
4390 |
|
4391 bool changed = false; |
|
4392 if (clearSel) { |
|
4393 for (i = d->head; i && i != from; i = i->n) { |
|
4394 if (i->s) { |
|
4395 i->s = false; |
|
4396 changed = true; |
|
4397 updateItem(i); |
|
4398 } |
|
4399 } |
|
4400 for (i = to->n; i; i = i->n) { |
|
4401 if (i->s) { |
|
4402 i->s = false; |
|
4403 changed = true; |
|
4404 updateItem(i); |
|
4405 } |
|
4406 } |
|
4407 } |
|
4408 |
|
4409 for (i = from; i; i = i->next()) { |
|
4410 if (!invert) { |
|
4411 if (!i->s && i->isSelectable()) { |
|
4412 i->s = true; |
|
4413 changed = true; |
|
4414 updateItem(i); |
|
4415 } |
|
4416 } else { |
|
4417 bool sel = !i->s; |
|
4418 if (((bool)i->s != sel && sel && i->isSelectable()) || !sel) { |
|
4419 i->s = sel; |
|
4420 changed = true; |
|
4421 updateItem(i); |
|
4422 } |
|
4423 } |
|
4424 if (i == to) |
|
4425 break; |
|
4426 } |
|
4427 if (changed) { |
|
4428 emit selectionChanged(); |
|
4429 #ifndef QT_NO_ACCESSIBILITY |
|
4430 QAccessible::updateAccessibility(viewport(), 0, QAccessible::Selection); |
|
4431 #endif |
|
4432 } |
|
4433 } |
|
4434 |
|
4435 /*! \reimp */ |
|
4436 void Q3ListBox::changeEvent(QEvent *ev) |
|
4437 { |
|
4438 if (ev->type() == QEvent::ActivationChange) { |
|
4439 if (!isActiveWindow() && d->scrollTimer) |
|
4440 d->scrollTimer->stop(); |
|
4441 if (!palette().isEqual(QPalette::Active, QPalette::Inactive)) |
|
4442 viewport()->update(); |
|
4443 } |
|
4444 Q3ScrollView::changeEvent(ev); |
|
4445 |
|
4446 if (ev->type() == QEvent::ApplicationFontChange || ev->type() == QEvent::FontChange) |
|
4447 triggerUpdate(true); |
|
4448 } |
|
4449 |
|
4450 /*! |
|
4451 Returns 0. |
|
4452 |
|
4453 Make your derived classes return their own values for rtti(), and |
|
4454 you can distinguish between listbox items. You should use values |
|
4455 greater than 1000 preferably a large random number, to allow for |
|
4456 extensions to this class. |
|
4457 */ |
|
4458 |
|
4459 int Q3ListBoxItem::rtti() const |
|
4460 { |
|
4461 return RTTI; |
|
4462 } |
|
4463 |
|
4464 /*! |
|
4465 \fn bool Q3ListBox::dragSelect() const |
|
4466 |
|
4467 Returns true. Dragging always selects. |
|
4468 */ |
|
4469 |
|
4470 /*! |
|
4471 \fn void Q3ListBox::setDragSelect(bool b) |
|
4472 |
|
4473 Does nothing. Dragging always selects. The \a b parameter is ignored. |
|
4474 */ |
|
4475 |
|
4476 /*! |
|
4477 \fn bool Q3ListBox::autoScroll() const |
|
4478 |
|
4479 Use dragAutoScroll() instead. This function always returns true. |
|
4480 */ |
|
4481 |
|
4482 /*! |
|
4483 \fn void Q3ListBox::setAutoScroll(bool b) |
|
4484 |
|
4485 Use setDragAutoScroll(\a b) instead. |
|
4486 */ |
|
4487 |
|
4488 /*! |
|
4489 \fn bool Q3ListBox::autoScrollBar() const |
|
4490 |
|
4491 Use vScrollBarMode() instead. Returns true if the vertical |
|
4492 scrollbar mode is \c Auto. |
|
4493 */ |
|
4494 |
|
4495 /*! |
|
4496 \fn void Q3ListBox::setAutoScrollBar(bool enable) |
|
4497 |
|
4498 Use setVScrollBarMode() instead. |
|
4499 |
|
4500 If \a enable is true, pass \c Auto as the argument to |
|
4501 setVScrollBarMode(); otherwise, pass \c AlwaysOff. |
|
4502 */ |
|
4503 |
|
4504 /*! |
|
4505 \fn bool Q3ListBox::scrollBar() const |
|
4506 |
|
4507 Use vScrollBarMode() instead. Returns true if the vertical |
|
4508 scrollbar mode is not \c AlwaysOff. |
|
4509 */ |
|
4510 |
|
4511 /*! |
|
4512 \fn void Q3ListBox::setScrollBar(bool enable) |
|
4513 |
|
4514 Use setVScrollBarMode() instead. |
|
4515 |
|
4516 If \a enable is true, pass \c AlwaysOn as the argument to |
|
4517 setVScrollBarMode(); otherwise, pass \c AlwaysOff. |
|
4518 */ |
|
4519 |
|
4520 /*! |
|
4521 \fn bool Q3ListBox::autoBottomScrollBar() const |
|
4522 |
|
4523 Use hScrollBarMode() instead. Returns true if the horizontal |
|
4524 scrollbar mode is set to \c Auto. |
|
4525 */ |
|
4526 |
|
4527 /*! |
|
4528 \fn void Q3ListBox::setAutoBottomScrollBar(bool enable) |
|
4529 |
|
4530 Use setHScrollBarMode() instead. |
|
4531 |
|
4532 If \a enable is true, pass \c Auto as the argument to |
|
4533 setHScrollBarMode(); otherwise, pass \c AlwaysOff. |
|
4534 */ |
|
4535 |
|
4536 /*! |
|
4537 \fn bool Q3ListBox::bottomScrollBar() const |
|
4538 |
|
4539 Use hScrollBarMode() instead. Returns true if the horizontal |
|
4540 scrollbar mode is not \c AlwaysOff. |
|
4541 */ |
|
4542 |
|
4543 /*! |
|
4544 \fn void Q3ListBox::setBottomScrollBar(bool enable) |
|
4545 |
|
4546 Use setHScrollBarMode() instead. |
|
4547 |
|
4548 If \a enable is true, pass \c AlwaysOn as the argument to |
|
4549 setHScrollBarMode(); otherwise, pass \c AlwaysOff. |
|
4550 */ |
|
4551 |
|
4552 /*! |
|
4553 \fn bool Q3ListBox::smoothScrolling() const |
|
4554 |
|
4555 Returns false. Qt always scrolls smoothly. |
|
4556 */ |
|
4557 |
|
4558 /*! |
|
4559 \fn void Q3ListBox::setSmoothScrolling(bool b) |
|
4560 |
|
4561 Does nothing. Qt always scrolls smoothly. The \a b parameter is |
|
4562 ignored. |
|
4563 */ |
|
4564 |
|
4565 /*! |
|
4566 \fn bool Q3ListBox::autoUpdate() const |
|
4567 |
|
4568 Returns true. Qt always updates automatically. |
|
4569 */ |
|
4570 |
|
4571 /*! |
|
4572 \fn void Q3ListBox::setAutoUpdate(bool b) |
|
4573 |
|
4574 Does nothing. Qt always updates automatically. The \a b parameter |
|
4575 is ignored. |
|
4576 */ |
|
4577 |
|
4578 /*! |
|
4579 \fn void Q3ListBox::setFixedVisibleLines(int lines) |
|
4580 |
|
4581 Use setRowMode(\a lines) instead. |
|
4582 */ |
|
4583 |
|
4584 /*! |
|
4585 \fn int Q3ListBox::cellHeight(int i) const |
|
4586 |
|
4587 Use itemHeight(\a i) instead. |
|
4588 */ |
|
4589 |
|
4590 /*! |
|
4591 \fn int Q3ListBox::cellHeight() const |
|
4592 |
|
4593 Use itemHeight() instead. |
|
4594 */ |
|
4595 |
|
4596 /*! |
|
4597 \fn int Q3ListBox::cellWidth() const |
|
4598 |
|
4599 Use maxItemWidth() instead. |
|
4600 */ |
|
4601 |
|
4602 /*! |
|
4603 \fn int Q3ListBox::cellWidth(int i) const |
|
4604 |
|
4605 Use maxItemWidth(\a i) instead. |
|
4606 */ |
|
4607 |
|
4608 /*! |
|
4609 \fn int Q3ListBox::numCols() const |
|
4610 |
|
4611 Use numColumns() instead. |
|
4612 */ |
|
4613 |
|
4614 /*! |
|
4615 \fn void Q3ListBox::updateCellWidth() |
|
4616 |
|
4617 Does nothing. Qt automatically updates. |
|
4618 */ |
|
4619 |
|
4620 /*! |
|
4621 \fn int Q3ListBox::totalWidth() const |
|
4622 |
|
4623 Use contentsWidth() instead. |
|
4624 */ |
|
4625 |
|
4626 /*! |
|
4627 \fn int Q3ListBox::totalHeight() const |
|
4628 |
|
4629 Use contentsHeight() instead. |
|
4630 */ |
|
4631 |
|
4632 /*! |
|
4633 \fn int Q3ListBox::findItem(int yPos) const |
|
4634 |
|
4635 Use index(itemAt(\a yPos)) instead. |
|
4636 */ |
|
4637 |
|
4638 /*! |
|
4639 \fn bool Q3ListBoxItem::selected() const |
|
4640 |
|
4641 Use isSelected() instead. Returns true if isSelected() |
|
4642 returns true. |
|
4643 */ |
|
4644 |
|
4645 /*! |
|
4646 \fn bool Q3ListBoxItem::current() const |
|
4647 |
|
4648 Use isCurrent() instead. Returns true if isCurrent() |
|
4649 returns true. |
|
4650 */ |
|
4651 |
|
4652 /*! |
|
4653 \enum Q3ListBox::StringComparisonMode |
|
4654 |
|
4655 This enum type is used to set the string comparison mode when |
|
4656 searching for an item. We'll refer to the string being searched |
|
4657 as the 'target' string. |
|
4658 |
|
4659 \value CaseSensitive The strings must match case sensitively. |
|
4660 \value ExactMatch The target and search strings must match exactly. |
|
4661 \value BeginsWith The target string begins with the search string. |
|
4662 \value EndsWith The target string ends with the search string. |
|
4663 \value Contains The target string contains the search string. |
|
4664 |
|
4665 If you OR these flags together (excluding \c CaseSensitive), the |
|
4666 search criteria be applied in the following order: \c ExactMatch, |
|
4667 \c BeginsWith, \c EndsWith, \c Contains. |
|
4668 |
|
4669 Matching is case-insensitive unless \c CaseSensitive is set. \c |
|
4670 CaseSensitive can be OR-ed with any combination of the other |
|
4671 flags. |
|
4672 |
|
4673 \sa ComparisonFlags |
|
4674 */ |
|
4675 |
|
4676 /*! |
|
4677 \typedef Q3ListBox::ComparisonFlags |
|
4678 |
|
4679 This typedef is used in Q3IconView's API for values that are OR'd |
|
4680 combinations of \l StringComparisonMode values. |
|
4681 |
|
4682 \sa StringComparisonMode |
|
4683 */ |
|
4684 |
|
4685 QT_END_NAMESPACE |
|
4686 |
|
4687 #endif // QT_NO_LISTBOX |