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<h1 class="title">settingstree.cpp Example File</h1>
<span class="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) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, 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 The Qt Company Ltd 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 <QtWidgets></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)
<span class="operator">,</span> autoRefresh(<span class="keyword">false</span>)
{
setItemDelegate(<span class="keyword">new</span> VariantDelegate(<span class="keyword">this</span>));
<span class="type"><a href="../qtcore/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>setSectionResizeMode(<span class="number">0</span><span class="operator">,</span> <span class="type"><a href="qheaderview.html">QHeaderView</a></span><span class="operator">::</span>ResizeToContents);
header()<span class="operator">-</span><span class="operator">></span>setSectionResizeMode(<span class="number">1</span><span class="operator">,</span> <span class="type"><a href="qheaderview.html">QHeaderView</a></span><span class="operator">::</span>ResizeToContents);
header()<span class="operator">-</span><span class="operator">></span>setSectionResizeMode(<span class="number">2</span><span class="operator">,</span> <span class="type"><a href="qheaderview.html">QHeaderView</a></span><span class="operator">::</span>Stretch);
refreshTimer<span class="operator">.</span>setInterval(<span class="number">2000</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="../qtgui/qicon.html">QIcon</a></span><span class="operator">::</span>Normal<span class="operator">,</span> <span class="type"><a href="../qtgui/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="../qtgui/qicon.html">QIcon</a></span><span class="operator">::</span>Normal<span class="operator">,</span> <span class="type"><a href="../qtgui/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> <span class="operator">&</span><span class="type"><a href="../qtcore/qtimer.html">QTimer</a></span><span class="operator">::</span>timeout<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>SettingsTree<span class="operator">::</span>maybeRefresh);
}
SettingsTree<span class="operator">::</span><span class="operator">~</span>SettingsTree()
{
}
<span class="type">void</span> SettingsTree<span class="operator">::</span>setSettingsObject(<span class="keyword">const</span> SettingsPtr <span class="operator">&</span>newSettings)
{
settings <span class="operator">=</span> newSettings;
clear();
<span class="keyword">if</span> (settings<span class="operator">.</span>isNull()) {
refreshTimer<span class="operator">.</span>stop();
} <span class="keyword">else</span> {
refresh();
<span class="keyword">if</span> (autoRefresh)
refreshTimer<span class="operator">.</span>start();
}
}
<span class="type"><a href="../qtcore/qsize.html">QSize</a></span> SettingsTree<span class="operator">::</span>sizeHint() <span class="keyword">const</span>
{
<span class="keyword">const</span> <span class="type"><a href="../qtcore/qrect.html">QRect</a></span> availableGeometry <span class="operator">=</span> <span class="type"><a href="qapplication.html">QApplication</a></span><span class="operator">::</span>desktop()<span class="operator">-</span><span class="operator">></span>availableGeometry(<span class="keyword">this</span>);
<span class="keyword">return</span> <span class="type"><a href="../qtcore/qsize.html">QSize</a></span>(availableGeometry<span class="operator">.</span>width() <span class="operator">*</span> <span class="number">2</span> <span class="operator">/</span> <span class="number">3</span><span class="operator">,</span> availableGeometry<span class="operator">.</span>height() <span class="operator">*</span> <span class="number">2</span> <span class="operator">/</span> <span class="number">3</span>);
}
<span class="type">void</span> SettingsTree<span class="operator">::</span>setAutoRefresh(bool 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> (<span class="operator">!</span>settings<span class="operator">.</span>isNull()) {
<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(bool enabled)
{
<span class="keyword">if</span> (<span class="operator">!</span>settings<span class="operator">.</span>isNull()) {
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> (settings<span class="operator">.</span>isNull())
<span class="keyword">return</span>;
disconnect(<span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qtreewidget.html">QTreeWidget</a></span><span class="operator">::</span>itemChanged<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>SettingsTree<span class="operator">::</span>updateSetting);
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> <span class="operator">&</span><span class="type"><a href="qtreewidget.html">QTreeWidget</a></span><span class="operator">::</span>itemChanged<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>SettingsTree<span class="operator">::</span>updateSetting);
}
bool SettingsTree<span class="operator">::</span>event(<span class="type"><a href="../qtcore/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="../qtcore/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="../qtcore/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> QLatin1Char(<span class="char">'/'</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="../qtcore/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="../qtcore/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="type"><a href="../qtcore/qstring.html">QString</a></span>());
child<span class="operator">-</span><span class="operator">></span>setText(<span class="number">2</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></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="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>UserRole<span class="operator">,</span> <span class="type"><a href="../qtcore/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="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</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="../qtcore/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="../qtcore/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="../qtcore/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="../qtcore/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="../qtcore/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="../qtcore/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>
</div>
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<p>
<acronym title="Copyright">©</acronym> 2017 The Qt Company Ltd.
Documentation contributions included herein are the copyrights of
their respective owners.<br> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property
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distrib
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Mageia
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6
>
armv5tl
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media
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core-updates
>
by-pkgid
>
768f7d9f703884aa2562bf0a651086df
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files
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4352
