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qt4-x11/doc/html/tools-i18n-languagechooser-cpp.html
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<h1 class="title">languagechooser.cpp Example File</h1>
<span class="small-subtitle">tools/i18n/languagechooser.cpp</span>
<!-- $$$tools/i18n/languagechooser.cpp-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp"> <span class="comment">/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** 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:
**
** &quot;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
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** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** &quot;AS IS&quot; 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.&quot;
**
** $QT_END_LICENSE$
**
****************************************************************************/</span>
<span class="preprocessor">#include &lt;QtGui&gt;</span>
<span class="preprocessor">#include &quot;languagechooser.h&quot;</span>
<span class="preprocessor">#include &quot;mainwindow.h&quot;</span>
<span class="preprocessor">#ifdef Q_WS_MAC</span>
<span class="keyword">extern</span> <span class="type">void</span> qt_mac_set_menubar_merge(<span class="type">bool</span> merge);
<span class="preprocessor">#endif</span>
LanguageChooser<span class="operator">::</span>LanguageChooser(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent)
: <span class="type"><a href="qdialog.html">QDialog</a></span>(parent<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>WindowStaysOnTopHint)
{
groupBox <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgroupbox.html">QGroupBox</a></span>(<span class="string">&quot;Languages&quot;</span>);
<span class="type"><a href="qgridlayout.html">QGridLayout</a></span> <span class="operator">*</span>groupBoxLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgridlayout.html">QGridLayout</a></span>;
<span class="type"><a href="qstringlist.html">QStringList</a></span> qmFiles <span class="operator">=</span> findQmFiles();
<span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator">&lt;</span> qmFiles<span class="operator">.</span>size(); <span class="operator">+</span><span class="operator">+</span>i) {
<span class="type"><a href="qcheckbox.html">QCheckBox</a></span> <span class="operator">*</span>checkBox <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qcheckbox.html">QCheckBox</a></span>(languageName(qmFiles<span class="operator">[</span>i<span class="operator">]</span>));
qmFileForCheckBoxMap<span class="operator">.</span>insert(checkBox<span class="operator">,</span> qmFiles<span class="operator">[</span>i<span class="operator">]</span>);
connect(checkBox<span class="operator">,</span> SIGNAL(toggled(<span class="type">bool</span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(checkBoxToggled()));
groupBoxLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(checkBox<span class="operator">,</span> i <span class="operator">/</span> <span class="number">2</span><span class="operator">,</span> i <span class="operator">%</span> <span class="number">2</span>);
}
groupBox<span class="operator">-</span><span class="operator">&gt;</span>setLayout(groupBoxLayout);
buttonBox <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qdialogbuttonbox.html">QDialogButtonBox</a></span>;
showAllButton <span class="operator">=</span> buttonBox<span class="operator">-</span><span class="operator">&gt;</span>addButton(<span class="string">&quot;Show All&quot;</span><span class="operator">,</span>
<span class="type"><a href="qdialogbuttonbox.html">QDialogButtonBox</a></span><span class="operator">::</span>ActionRole);
hideAllButton <span class="operator">=</span> buttonBox<span class="operator">-</span><span class="operator">&gt;</span>addButton(<span class="string">&quot;Hide All&quot;</span><span class="operator">,</span>
<span class="type"><a href="qdialogbuttonbox.html">QDialogButtonBox</a></span><span class="operator">::</span>ActionRole);
connect(showAllButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(showAll()));
connect(hideAllButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(hideAll()));
<span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span> <span class="operator">*</span>mainLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span>;
mainLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(groupBox);
mainLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(buttonBox);
setLayout(mainLayout);
<span class="preprocessor">#ifdef Q_WS_MAC</span>
qt_mac_set_menubar_merge(<span class="keyword">false</span>);
<span class="preprocessor">#endif</span>
setWindowTitle(<span class="string">&quot;I18N&quot;</span>);
}
<span class="type">bool</span> LanguageChooser<span class="operator">::</span>eventFilter(<span class="type"><a href="qobject.html">QObject</a></span> <span class="operator">*</span>object<span class="operator">,</span> <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">&gt;</span>type() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qevent.html">QEvent</a></span><span class="operator">::</span>Close) {
MainWindow <span class="operator">*</span>window <span class="operator">=</span> qobject_cast<span class="operator">&lt;</span>MainWindow <span class="operator">*</span><span class="operator">&gt;</span>(object);
<span class="keyword">if</span> (window) {
<span class="type"><a href="qcheckbox.html">QCheckBox</a></span> <span class="operator">*</span>checkBox <span class="operator">=</span> mainWindowForCheckBoxMap<span class="operator">.</span>key(window);
<span class="keyword">if</span> (checkBox)
checkBox<span class="operator">-</span><span class="operator">&gt;</span>setChecked(<span class="keyword">false</span>);
}
}
<span class="keyword">return</span> <span class="type"><a href="qwidget.html">QWidget</a></span><span class="operator">::</span>eventFilter(object<span class="operator">,</span> event);
}
<span class="type">void</span> LanguageChooser<span class="operator">::</span>closeEvent(<span class="type"><a href="qcloseevent.html">QCloseEvent</a></span> <span class="operator">*</span> <span class="comment">/* event */</span>)
{
qApp<span class="operator">-</span><span class="operator">&gt;</span>quit();
}
<span class="type">void</span> LanguageChooser<span class="operator">::</span>checkBoxToggled()
{
<span class="type"><a href="qcheckbox.html">QCheckBox</a></span> <span class="operator">*</span>checkBox <span class="operator">=</span> qobject_cast<span class="operator">&lt;</span><span class="type"><a href="qcheckbox.html">QCheckBox</a></span> <span class="operator">*</span><span class="operator">&gt;</span>(sender());
MainWindow <span class="operator">*</span>window <span class="operator">=</span> mainWindowForCheckBoxMap<span class="operator">[</span>checkBox<span class="operator">]</span>;
<span class="keyword">if</span> (<span class="operator">!</span>window) {
<span class="type"><a href="qtranslator.html">QTranslator</a></span> translator;
translator<span class="operator">.</span>load(qmFileForCheckBoxMap<span class="operator">[</span>checkBox<span class="operator">]</span>);
qApp<span class="operator">-</span><span class="operator">&gt;</span>installTranslator(<span class="operator">&amp;</span>translator);
window <span class="operator">=</span> <span class="keyword">new</span> MainWindow;
window<span class="operator">-</span><span class="operator">&gt;</span>setPalette(colorForLanguage(checkBox<span class="operator">-</span><span class="operator">&gt;</span>text()));
window<span class="operator">-</span><span class="operator">&gt;</span>installEventFilter(<span class="keyword">this</span>);
mainWindowForCheckBoxMap<span class="operator">.</span>insert(checkBox<span class="operator">,</span> window);
}
window<span class="operator">-</span><span class="operator">&gt;</span>setVisible(checkBox<span class="operator">-</span><span class="operator">&gt;</span>isChecked());
}
<span class="type">void</span> LanguageChooser<span class="operator">::</span>showAll()
{
foreach (<span class="type"><a href="qcheckbox.html">QCheckBox</a></span> <span class="operator">*</span>checkBox<span class="operator">,</span> qmFileForCheckBoxMap<span class="operator">.</span>keys())
checkBox<span class="operator">-</span><span class="operator">&gt;</span>setChecked(<span class="keyword">true</span>);
}
<span class="type">void</span> LanguageChooser<span class="operator">::</span>hideAll()
{
foreach (<span class="type"><a href="qcheckbox.html">QCheckBox</a></span> <span class="operator">*</span>checkBox<span class="operator">,</span> qmFileForCheckBoxMap<span class="operator">.</span>keys())
checkBox<span class="operator">-</span><span class="operator">&gt;</span>setChecked(<span class="keyword">false</span>);
}
<span class="type"><a href="qstringlist.html">QStringList</a></span> LanguageChooser<span class="operator">::</span>findQmFiles()
{
<span class="type"><a href="qdir.html">QDir</a></span> dir(<span class="string">&quot;:/translations&quot;</span>);
<span class="type"><a href="qstringlist.html">QStringList</a></span> fileNames <span class="operator">=</span> dir<span class="operator">.</span>entryList(<span class="type"><a href="qstringlist.html">QStringList</a></span>(<span class="string">&quot;*.qm&quot;</span>)<span class="operator">,</span> <span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>Files<span class="operator">,</span>
<span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>Name);
<span class="type"><a href="qstringlist.html#QMutableStringListIterator-typedef">QMutableStringListIterator</a></span> i(fileNames);
<span class="keyword">while</span> (i<span class="operator">.</span>hasNext()) {
i<span class="operator">.</span>next();
i<span class="operator">.</span>setValue(dir<span class="operator">.</span>filePath(i<span class="operator">.</span>value()));
}
<span class="keyword">return</span> fileNames;
}
<span class="type"><a href="qstring.html">QString</a></span> LanguageChooser<span class="operator">::</span>languageName(<span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> <span class="operator">&amp;</span>qmFile)
{
<span class="type"><a href="qtranslator.html">QTranslator</a></span> translator;
translator<span class="operator">.</span>load(qmFile);
<span class="keyword">return</span> translator<span class="operator">.</span>translate(<span class="string">&quot;MainWindow&quot;</span><span class="operator">,</span> <span class="string">&quot;English&quot;</span>);
}
<span class="type"><a href="qcolor.html">QColor</a></span> LanguageChooser<span class="operator">::</span>colorForLanguage(<span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> <span class="operator">&amp;</span>language)
{
<span class="type"><a href="qtglobal.html#uint-typedef">uint</a></span> hashValue <span class="operator">=</span> <a href="qsourcelocation.html#qHash">qHash</a>(language);
<span class="type">int</span> red <span class="operator">=</span> <span class="number">156</span> <span class="operator">+</span> (hashValue <span class="operator">&amp;</span> <span class="number">0x3F</span>);
<span class="type">int</span> green <span class="operator">=</span> <span class="number">156</span> <span class="operator">+</span> ((hashValue <span class="operator">&gt;</span><span class="operator">&gt;</span> <span class="number">6</span>) <span class="operator">&amp;</span> <span class="number">0x3F</span>);
<span class="type">int</span> blue <span class="operator">=</span> <span class="number">156</span> <span class="operator">+</span> ((hashValue <span class="operator">&gt;</span><span class="operator">&gt;</span> <span class="number">12</span>) <span class="operator">&amp;</span> <span class="number">0x3F</span>);
<span class="keyword">return</span> <span class="type"><a href="qcolor.html">QColor</a></span>(red<span class="operator">,</span> green<span class="operator">,</span> blue);
}</pre>
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<!-- @@@tools/i18n/languagechooser.cpp -->
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