<?xml version="1.0" encoding="iso-8859-1"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <title>Qt 4.6: languagechooser.cpp Example File (tools/i18n/languagechooser.cpp)</title> <link href="classic.css" rel="stylesheet" type="text/css" /> </head> <body> <table border="0" cellpadding="0" cellspacing="0" width="100%"> <tr> <td align="left" valign="top" width="32"><a href="http://qt.nokia.com/"><img src="images/qt-logo.png" align="left" border="0" /></a></td> <td width="1"> </td><td class="postheader" valign="center"><a href="index.html"><font color="#004faf">Home</font></a> · <a href="classes.html"><font color="#004faf">All Classes</font></a> · <a href="functions.html"><font color="#004faf">All Functions</font></a> · <a href="overviews.html"><font color="#004faf">Overviews</font></a></td></tr></table><h1 class="title">languagechooser.cpp Example File<br /><span class="small-subtitle">tools/i18n/languagechooser.cpp</span> </h1> <pre><span class="comment"> /**************************************************************************** ** ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). ** All rights reserved. ** Contact: Nokia Corporation (qt-info@nokia.com) ** ** This file is part of the examples of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL$ ** Commercial Usage ** Licensees holding valid Qt Commercial licenses may use this file in ** accordance with the Qt Commercial License Agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and Nokia. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser ** General Public License version 2.1 as published by the Free Software ** Foundation and appearing in the file LICENSE.LGPL included in the ** packaging of this file. Please review the following information to ** ensure the GNU Lesser General Public License version 2.1 requirements ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. ** ** In addition, as a special exception, Nokia gives you certain additional ** rights. These rights are described in the Nokia Qt LGPL Exception ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. ** ** GNU General Public License Usage ** Alternatively, this file may be used under the terms of the GNU ** General Public License version 3.0 as published by the Free Software ** Foundation and appearing in the file LICENSE.GPL included in the ** packaging of this file. Please review the following information to ** ensure the GNU General Public License version 3.0 requirements will be ** met: http://www.gnu.org/copyleft/gpl.html. ** ** If you have questions regarding the use of this file, please contact ** Nokia at qt-info@nokia.com. ** $QT_END_LICENSE$ ** ****************************************************************************/</span> #include <QtGui> #include "languagechooser.h" #include "mainwindow.h" #ifdef Q_WS_MAC extern void qt_mac_set_menubar_merge(bool merge); #endif LanguageChooser::LanguageChooser(QWidget *parent) : QDialog(parent, Qt::WindowStaysOnTopHint) { groupBox = new QGroupBox("Languages"); QGridLayout *groupBoxLayout = new QGridLayout; QStringList qmFiles = findQmFiles(); for (int i = 0; i < qmFiles.size(); ++i) { QCheckBox *checkBox = new QCheckBox(languageName(qmFiles[i])); qmFileForCheckBoxMap.insert(checkBox, qmFiles[i]); connect(checkBox, SIGNAL(toggled(bool)), this, SLOT(checkBoxToggled())); groupBoxLayout->addWidget(checkBox, i / 2, i % 2); } groupBox->setLayout(groupBoxLayout); buttonBox = new QDialogButtonBox; showAllButton = buttonBox->addButton("Show All", QDialogButtonBox::ActionRole); hideAllButton = buttonBox->addButton("Hide All", QDialogButtonBox::ActionRole); connect(showAllButton, SIGNAL(clicked()), this, SLOT(showAll())); connect(hideAllButton, SIGNAL(clicked()), this, SLOT(hideAll())); QVBoxLayout *mainLayout = new QVBoxLayout; mainLayout->addWidget(groupBox); mainLayout->addWidget(buttonBox); setLayout(mainLayout); #ifdef Q_WS_MAC qt_mac_set_menubar_merge(false); #endif setWindowTitle("I18N"); } bool LanguageChooser::eventFilter(QObject *object, QEvent *event) { if (event->type() == QEvent::Close) { MainWindow *window = qobject_cast<MainWindow *>(object); if (window) { QCheckBox *checkBox = mainWindowForCheckBoxMap.key(window); if (checkBox) checkBox->setChecked(false); } } return QWidget::eventFilter(object, event); } void LanguageChooser::closeEvent(QCloseEvent * <span class="comment">/* event */</span>) { qApp->quit(); } void LanguageChooser::checkBoxToggled() { QCheckBox *checkBox = qobject_cast<QCheckBox *>(sender()); MainWindow *window = mainWindowForCheckBoxMap[checkBox]; if (!window) { QTranslator translator; translator.load(qmFileForCheckBoxMap[checkBox]); qApp->installTranslator(&translator); window = new MainWindow; window->setPalette(colorForLanguage(checkBox->text())); window->installEventFilter(this); mainWindowForCheckBoxMap.insert(checkBox, window); } window->setVisible(checkBox->isChecked()); } void LanguageChooser::showAll() { foreach (QCheckBox *checkBox, qmFileForCheckBoxMap.keys()) checkBox->setChecked(true); } void LanguageChooser::hideAll() { foreach (QCheckBox *checkBox, qmFileForCheckBoxMap.keys()) checkBox->setChecked(false); } QStringList LanguageChooser::findQmFiles() { QDir dir(":/translations"); QStringList fileNames = dir.entryList(QStringList("*.qm"), QDir::Files, QDir::Name); QMutableStringListIterator i(fileNames); while (i.hasNext()) { i.next(); i.setValue(dir.filePath(i.value())); } return fileNames; } QString LanguageChooser::languageName(const QString &qmFile) { QTranslator translator; translator.load(qmFile); return translator.translate("MainWindow", "English"); } QColor LanguageChooser::colorForLanguage(const QString &language) { uint hashValue = qHash(language); int red = 156 + (hashValue & 0x3F); int green = 156 + ((hashValue >> 6) & 0x3F); int blue = 156 + ((hashValue >> 12) & 0x3F); return QColor(red, green, blue); }</pre> <p /><address><hr /><div align="center"> <table width="100%" cellspacing="0" border="0"><tr class="address"> <td width="40%" align="left">Copyright © 2010 Nokia Corporation and/or its subsidiary(-ies)</td> <td width="20%" align="center"><a href="trademarks.html">Trademarks</a></td> <td width="40%" align="right"><div align="right">Qt 4.6.3</div></td> </tr></table></div></address></body> </html>