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Breadcrumbs go here --> </ul> </div> <div class="toolbuttons toolblock"> <ul> <li id="smallA" class="t_button">A</li> <li id="medA" class="t_button active">A</li> <li id="bigA" class="t_button">A</li> <li id="print" class="t_button"><a href="javascript:this.print();"> <span>Print</span></a></li> </ul> </div> </div> <div class="content mainContent"> <h1 class="title">settingstree.cpp Example File</h1> <span class="small-subtitle">tools/settingseditor/settingstree.cpp</span> <!-- $$$tools/settingseditor/settingstree.cpp-description --> <div class="descr"> <a name="details"></a> <pre class="cpp"> <span class="comment">/**************************************************************************** ** ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). ** Contact: http://www.qt-project.org/legal ** ** This file is part of the examples of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** You may use this file under the terms of the BSD license as follows: ** ** "Redistribution and use in source and binary forms, with or without ** modification, are permitted provided that the following conditions are ** met: ** * Redistributions of source code must retain the above copyright ** notice, this list of conditions and the following disclaimer. ** * Redistributions in binary form must reproduce the above copyright ** notice, this list of conditions and the following disclaimer in ** the documentation and/or other materials provided with the ** distribution. ** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names ** of its contributors may be used to endorse or promote products derived ** from this software without specific prior written permission. ** ** ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ** ** $QT_END_LICENSE$ ** ****************************************************************************/</span> <span class="preprocessor">#include <QtGui></span> <span class="preprocessor">#include "settingstree.h"</span> <span class="preprocessor">#include "variantdelegate.h"</span> SettingsTree<span class="operator">::</span>SettingsTree(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent) : <span class="type"><a href="qtreewidget.html">QTreeWidget</a></span>(parent) { setItemDelegate(<span class="keyword">new</span> VariantDelegate(<span class="keyword">this</span>)); <span class="type"><a href="qstringlist.html">QStringList</a></span> labels; labels <span class="operator"><</span><span class="operator"><</span> tr(<span class="string">"Setting"</span>) <span class="operator"><</span><span class="operator"><</span> tr(<span class="string">"Type"</span>) <span class="operator"><</span><span class="operator"><</span> tr(<span class="string">"Value"</span>); setHeaderLabels(labels); header()<span class="operator">-</span><span class="operator">></span>setResizeMode(<span class="number">0</span><span class="operator">,</span> <span class="type"><a href="qheaderview.html">QHeaderView</a></span><span class="operator">::</span>Stretch); header()<span class="operator">-</span><span class="operator">></span>setResizeMode(<span class="number">2</span><span class="operator">,</span> <span class="type"><a href="qheaderview.html">QHeaderView</a></span><span class="operator">::</span>Stretch); settings <span class="operator">=</span> <span class="number">0</span>; refreshTimer<span class="operator">.</span>setInterval(<span class="number">2000</span>); autoRefresh <span class="operator">=</span> <span class="keyword">false</span>; groupIcon<span class="operator">.</span>addPixmap(style()<span class="operator">-</span><span class="operator">></span>standardPixmap(<span class="type"><a href="qstyle.html">QStyle</a></span><span class="operator">::</span>SP_DirClosedIcon)<span class="operator">,</span> <span class="type"><a href="qicon.html">QIcon</a></span><span class="operator">::</span>Normal<span class="operator">,</span> <span class="type"><a href="qicon.html">QIcon</a></span><span class="operator">::</span>Off); groupIcon<span class="operator">.</span>addPixmap(style()<span class="operator">-</span><span class="operator">></span>standardPixmap(<span class="type"><a href="qstyle.html">QStyle</a></span><span class="operator">::</span>SP_DirOpenIcon)<span class="operator">,</span> <span class="type"><a href="qicon.html">QIcon</a></span><span class="operator">::</span>Normal<span class="operator">,</span> <span class="type"><a href="qicon.html">QIcon</a></span><span class="operator">::</span>On); keyIcon<span class="operator">.</span>addPixmap(style()<span class="operator">-</span><span class="operator">></span>standardPixmap(<span class="type"><a href="qstyle.html">QStyle</a></span><span class="operator">::</span>SP_FileIcon)); connect(<span class="operator">&</span>refreshTimer<span class="operator">,</span> SIGNAL(timeout())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(maybeRefresh())); } <span class="type">void</span> SettingsTree<span class="operator">::</span>setSettingsObject(<span class="type"><a href="qsettings.html">QSettings</a></span> <span class="operator">*</span>settings) { <span class="keyword">delete</span> <span class="keyword">this</span><span class="operator">-</span><span class="operator">></span>settings; <span class="keyword">this</span><span class="operator">-</span><span class="operator">></span>settings <span class="operator">=</span> settings; clear(); <span class="keyword">if</span> (settings) { settings<span class="operator">-</span><span class="operator">></span>setParent(<span class="keyword">this</span>); refresh(); <span class="keyword">if</span> (autoRefresh) refreshTimer<span class="operator">.</span>start(); } <span class="keyword">else</span> { refreshTimer<span class="operator">.</span>stop(); } } <span class="type"><a href="qsize.html">QSize</a></span> SettingsTree<span class="operator">::</span>sizeHint() <span class="keyword">const</span> { <span class="keyword">return</span> <span class="type"><a href="qsize.html">QSize</a></span>(<span class="number">800</span><span class="operator">,</span> <span class="number">600</span>); } <span class="type">void</span> SettingsTree<span class="operator">::</span>setAutoRefresh(<span class="type">bool</span> autoRefresh) { <span class="keyword">this</span><span class="operator">-</span><span class="operator">></span>autoRefresh <span class="operator">=</span> autoRefresh; <span class="keyword">if</span> (settings) { <span class="keyword">if</span> (autoRefresh) { maybeRefresh(); refreshTimer<span class="operator">.</span>start(); } <span class="keyword">else</span> { refreshTimer<span class="operator">.</span>stop(); } } } <span class="type">void</span> SettingsTree<span class="operator">::</span>setFallbacksEnabled(<span class="type">bool</span> enabled) { <span class="keyword">if</span> (settings) { settings<span class="operator">-</span><span class="operator">></span>setFallbacksEnabled(enabled); refresh(); } } <span class="type">void</span> SettingsTree<span class="operator">::</span>maybeRefresh() { <span class="keyword">if</span> (state() <span class="operator">!</span><span class="operator">=</span> EditingState) refresh(); } <span class="type">void</span> SettingsTree<span class="operator">::</span>refresh() { <span class="keyword">if</span> (<span class="operator">!</span>settings) <span class="keyword">return</span>; disconnect(<span class="keyword">this</span><span class="operator">,</span> SIGNAL(itemChanged(<span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span><span class="operator">*</span><span class="operator">,</span><span class="type">int</span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(updateSetting(<span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span><span class="operator">*</span>))); settings<span class="operator">-</span><span class="operator">></span>sync(); updateChildItems(<span class="number">0</span>); connect(<span class="keyword">this</span><span class="operator">,</span> SIGNAL(itemChanged(<span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span><span class="operator">*</span><span class="operator">,</span><span class="type">int</span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(updateSetting(<span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span><span class="operator">*</span>))); } <span class="type">bool</span> SettingsTree<span class="operator">::</span>event(<span class="type"><a href="qevent.html">QEvent</a></span> <span class="operator">*</span>event) { <span class="keyword">if</span> (event<span class="operator">-</span><span class="operator">></span>type() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qevent.html">QEvent</a></span><span class="operator">::</span>WindowActivate) { <span class="keyword">if</span> (isActiveWindow() <span class="operator">&</span><span class="operator">&</span> autoRefresh) maybeRefresh(); } <span class="keyword">return</span> <span class="type"><a href="qtreewidget.html">QTreeWidget</a></span><span class="operator">::</span>event(event); } <span class="type">void</span> SettingsTree<span class="operator">::</span>updateSetting(<span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> <span class="operator">*</span>item) { <span class="type"><a href="qstring.html">QString</a></span> key <span class="operator">=</span> item<span class="operator">-</span><span class="operator">></span>text(<span class="number">0</span>); <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> <span class="operator">*</span>ancestor <span class="operator">=</span> item<span class="operator">-</span><span class="operator">></span>parent(); <span class="keyword">while</span> (ancestor) { key<span class="operator">.</span>prepend(ancestor<span class="operator">-</span><span class="operator">></span>text(<span class="number">0</span>) <span class="operator">+</span> <span class="string">"/"</span>); ancestor <span class="operator">=</span> ancestor<span class="operator">-</span><span class="operator">></span>parent(); } settings<span class="operator">-</span><span class="operator">></span>setValue(key<span class="operator">,</span> item<span class="operator">-</span><span class="operator">></span>data(<span class="number">2</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>UserRole)); <span class="keyword">if</span> (autoRefresh) refresh(); } <span class="type">void</span> SettingsTree<span class="operator">::</span>updateChildItems(<span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> <span class="operator">*</span>parent) { <span class="type">int</span> dividerIndex <span class="operator">=</span> <span class="number">0</span>; foreach (<span class="type"><a href="qstring.html">QString</a></span> group<span class="operator">,</span> settings<span class="operator">-</span><span class="operator">></span>childGroups()) { <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> <span class="operator">*</span>child; <span class="type">int</span> childIndex <span class="operator">=</span> findChild(parent<span class="operator">,</span> group<span class="operator">,</span> dividerIndex); <span class="keyword">if</span> (childIndex <span class="operator">!</span><span class="operator">=</span> <span class="operator">-</span><span class="number">1</span>) { child <span class="operator">=</span> childAt(parent<span class="operator">,</span> childIndex); child<span class="operator">-</span><span class="operator">></span>setText(<span class="number">1</span><span class="operator">,</span> <span class="string">""</span>); child<span class="operator">-</span><span class="operator">></span>setText(<span class="number">2</span><span class="operator">,</span> <span class="string">""</span>); child<span class="operator">-</span><span class="operator">></span>setData(<span class="number">2</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>UserRole<span class="operator">,</span> <span class="type"><a href="qvariant.html">QVariant</a></span>()); moveItemForward(parent<span class="operator">,</span> childIndex<span class="operator">,</span> dividerIndex); } <span class="keyword">else</span> { child <span class="operator">=</span> createItem(group<span class="operator">,</span> parent<span class="operator">,</span> dividerIndex); } child<span class="operator">-</span><span class="operator">></span>setIcon(<span class="number">0</span><span class="operator">,</span> groupIcon); <span class="operator">+</span><span class="operator">+</span>dividerIndex; settings<span class="operator">-</span><span class="operator">></span>beginGroup(group); updateChildItems(child); settings<span class="operator">-</span><span class="operator">></span>endGroup(); } foreach (<span class="type"><a href="qstring.html">QString</a></span> key<span class="operator">,</span> settings<span class="operator">-</span><span class="operator">></span>childKeys()) { <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> <span class="operator">*</span>child; <span class="type">int</span> childIndex <span class="operator">=</span> findChild(parent<span class="operator">,</span> key<span class="operator">,</span> <span class="number">0</span>); <span class="keyword">if</span> (childIndex <span class="operator">=</span><span class="operator">=</span> <span class="operator">-</span><span class="number">1</span> <span class="operator">|</span><span class="operator">|</span> childIndex <span class="operator">></span><span class="operator">=</span> dividerIndex) { <span class="keyword">if</span> (childIndex <span class="operator">!</span><span class="operator">=</span> <span class="operator">-</span><span class="number">1</span>) { child <span class="operator">=</span> childAt(parent<span class="operator">,</span> childIndex); <span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> child<span class="operator">-</span><span class="operator">></span>childCount(); <span class="operator">+</span><span class="operator">+</span>i) <span class="keyword">delete</span> childAt(child<span class="operator">,</span> i); moveItemForward(parent<span class="operator">,</span> childIndex<span class="operator">,</span> dividerIndex); } <span class="keyword">else</span> { child <span class="operator">=</span> createItem(key<span class="operator">,</span> parent<span class="operator">,</span> dividerIndex); } child<span class="operator">-</span><span class="operator">></span>setIcon(<span class="number">0</span><span class="operator">,</span> keyIcon); <span class="operator">+</span><span class="operator">+</span>dividerIndex; } <span class="keyword">else</span> { child <span class="operator">=</span> childAt(parent<span class="operator">,</span> childIndex); } <span class="type"><a href="qvariant.html">QVariant</a></span> value <span class="operator">=</span> settings<span class="operator">-</span><span class="operator">></span>value(key); <span class="keyword">if</span> (value<span class="operator">.</span>type() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qvariant.html">QVariant</a></span><span class="operator">::</span>Invalid) { child<span class="operator">-</span><span class="operator">></span>setText(<span class="number">1</span><span class="operator">,</span> <span class="string">"Invalid"</span>); } <span class="keyword">else</span> { child<span class="operator">-</span><span class="operator">></span>setText(<span class="number">1</span><span class="operator">,</span> value<span class="operator">.</span>typeName()); } child<span class="operator">-</span><span class="operator">></span>setText(<span class="number">2</span><span class="operator">,</span> VariantDelegate<span class="operator">::</span>displayText(value)); child<span class="operator">-</span><span class="operator">></span>setData(<span class="number">2</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>UserRole<span class="operator">,</span> value); } <span class="keyword">while</span> (dividerIndex <span class="operator"><</span> childCount(parent)) <span class="keyword">delete</span> childAt(parent<span class="operator">,</span> dividerIndex); } <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> <span class="operator">*</span>SettingsTree<span class="operator">::</span>createItem(<span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> <span class="operator">&</span>text<span class="operator">,</span> <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> <span class="operator">*</span>parent<span class="operator">,</span> <span class="type">int</span> index) { <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> <span class="operator">*</span>after <span class="operator">=</span> <span class="number">0</span>; <span class="keyword">if</span> (index <span class="operator">!</span><span class="operator">=</span> <span class="number">0</span>) after <span class="operator">=</span> childAt(parent<span class="operator">,</span> index <span class="operator">-</span> <span class="number">1</span>); <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> <span class="operator">*</span>item; <span class="keyword">if</span> (parent) item <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span>(parent<span class="operator">,</span> after); <span class="keyword">else</span> item <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span>(<span class="keyword">this</span><span class="operator">,</span> after); item<span class="operator">-</span><span class="operator">></span>setText(<span class="number">0</span><span class="operator">,</span> text); item<span class="operator">-</span><span class="operator">></span>setFlags(item<span class="operator">-</span><span class="operator">></span>flags() <span class="operator">|</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>ItemIsEditable); <span class="keyword">return</span> item; } <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> <span class="operator">*</span>SettingsTree<span class="operator">::</span>childAt(<span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> <span class="operator">*</span>parent<span class="operator">,</span> <span class="type">int</span> index) { <span class="keyword">if</span> (parent) <span class="keyword">return</span> parent<span class="operator">-</span><span class="operator">></span>child(index); <span class="keyword">else</span> <span class="keyword">return</span> topLevelItem(index); } <span class="type">int</span> SettingsTree<span class="operator">::</span>childCount(<span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> <span class="operator">*</span>parent) { <span class="keyword">if</span> (parent) <span class="keyword">return</span> parent<span class="operator">-</span><span class="operator">></span>childCount(); <span class="keyword">else</span> <span class="keyword">return</span> topLevelItemCount(); } <span class="type">int</span> SettingsTree<span class="operator">::</span>findChild(<span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> <span class="operator">*</span>parent<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> <span class="operator">&</span>text<span class="operator">,</span> <span class="type">int</span> startIndex) { <span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> startIndex; i <span class="operator"><</span> childCount(parent); <span class="operator">+</span><span class="operator">+</span>i) { <span class="keyword">if</span> (childAt(parent<span class="operator">,</span> i)<span class="operator">-</span><span class="operator">></span>text(<span class="number">0</span>) <span class="operator">=</span><span class="operator">=</span> text) <span class="keyword">return</span> i; } <span class="keyword">return</span> <span class="operator">-</span><span class="number">1</span>; } <span class="type">void</span> SettingsTree<span class="operator">::</span>moveItemForward(<span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> <span class="operator">*</span>parent<span class="operator">,</span> <span class="type">int</span> oldIndex<span class="operator">,</span> <span class="type">int</span> newIndex) { <span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> oldIndex <span class="operator">-</span> newIndex; <span class="operator">+</span><span class="operator">+</span>i) <span class="keyword">delete</span> childAt(parent<span class="operator">,</span> newIndex); }</pre> </div> <!-- @@@tools/settingseditor/settingstree.cpp --> </div> </div> </div> <div class="ft"> <span></span> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2013 Digia Plc and/or its subsidiaries. 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