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source: tspsg-svn/trunk/src/mainwindow.cpp @ 48

Last change on this file since 48 was 47, checked in by laleppa, 15 years ago

+ Current file name is displayed in main application window header.

Created a method for prompt for unsaved changes to unify it throughout the code.
Some stylistic README changes.

Property svn:keywords set to Id URL

File size: 19.6 KB

Rev	Line
[45]	1	/*
[42]	2	* TSPSG: TSP Solver and Generator
[17]	3	* Copyright (C) 2007-2009 Lёppa <contacts[at]oleksii[dot]name>
[1]	4	*
[6]	5	* $Id: mainwindow.cpp 47 2009-08-02 19:47:45Z laleppa $
	6	* $URL: https://tspsg.svn.sourceforge.net/svnroot/tspsg/trunk/src/mainwindow.cpp $
[4]	7	*
[6]	8	* This file is part of TSPSG.
[1]	9	*
[6]	10	* TSPSG is free software: you can redistribute it and/or modify
	11	* it under the terms of the GNU General Public License as published by
	12	* the Free Software Foundation, either version 3 of the License, or
	13	* (at your option) any later version.
[1]	14	*
[6]	15	* TSPSG is distributed in the hope that it will be useful,
	16	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	17	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	18	* GNU General Public License for more details.
[1]	19	*
[6]	20	* You should have received a copy of the GNU General Public License
	21	* along with TSPSG. If not, see <http://www.gnu.org/licenses/>.
[1]	22	*/
	23
	24	#include "mainwindow.h"
	25
	26	MainWindow::MainWindow(QWidget *parent)
[21]	27	: QMainWindow(parent)
[1]	28	{
[29]	29	settings = new QSettings(QSettings::IniFormat,QSettings::UserScope,"TSPSG","tspsg");
	30	loadLanguage();
[1]	31	setupUi(this);
[42]	32	initDocStyleSheet();
	33	solutionText->document()->setDefaultFont(settings->value("Output/Font",QFont(DEF_FONT_FAMILY,DEF_FONT_SIZE)).value<QFont>());
	34	solutionText->setTextColor(settings->value("Output/Color",DEF_FONT_COLOR).value<QColor>());
	35	solutionText->setWordWrapMode(QTextOption::WordWrap);
[38]	36	#ifdef Q_OS_WINCE
	37	// A little hack for toolbar icons to have sane size.
	38	int s = qMin(QApplication::desktop()->screenGeometry().width(),QApplication::desktop()->screenGeometry().height());
	39	toolBar->setIconSize(QSize(s / 10,s / 10));
	40	#endif
[29]	41	#ifndef Q_OS_WINCE
	42	printer = new QPrinter();
	43	#endif // Q_OS_WINCE
	44	groupSettingsLanguageList = new QActionGroup(this);
[30]	45	actionSettingsLanguageEnglish->setData("en");
	46	actionSettingsLanguageEnglish->setActionGroup(groupSettingsLanguageList);
[29]	47	loadLangList();
[23]	48	spinCities->setValue(settings->value("NumCities",5).toInt());
[29]	49	actionSettingsLanguageAutodetect->setChecked(settings->value("Language","").toString().isEmpty());
	50	connect(actionFileNew,SIGNAL(triggered()),this,SLOT(actionFileNewTriggered()));
[31]	51	connect(actionFileOpen,SIGNAL(triggered()),this,SLOT(actionFileOpenTriggered()));
[42]	52	connect(actionFileSaveAsTask,SIGNAL(triggered()),this,SLOT(actionFileSaveAsTaskTriggered()));
	53	connect(actionFileSaveAsSolution,SIGNAL(triggered()),this,SLOT(actionFileSaveAsSolutionTriggered()));
[29]	54	connect(actionSettingsPreferences,SIGNAL(triggered()),this,SLOT(actionSettingsPreferencesTriggered()));
	55	connect(actionSettingsLanguageAutodetect,SIGNAL(triggered(bool)),this,SLOT(actionSettingsLanguageAutodetectTriggered(bool)));
	56	connect(groupSettingsLanguageList,SIGNAL(triggered(QAction )),this,SLOT(groupSettingsLanguageListTriggered(QAction )));
[37]	57	connect(actionHelpAboutQt,SIGNAL(triggered()),qApp,SLOT(aboutQt()));
[29]	58	connect(actionHelpAbout,SIGNAL(triggered()),this,SLOT(actionHelpAboutTriggered()));
[17]	59	#ifndef Q_OS_WINCE
[29]	60	connect(actionFilePrintSetup,SIGNAL(triggered()),this,SLOT(actionFilePrintSetupTriggered()));
[17]	61	#endif // Q_OS_WINCE
[29]	62	connect(buttonSolve,SIGNAL(clicked()),this,SLOT(buttonSolveClicked()));
	63	connect(buttonRandom,SIGNAL(clicked()),this,SLOT(buttonRandomClicked()));
	64	connect(spinCities,SIGNAL(valueChanged(int)),this,SLOT(spinCitiesValueChanged(int)));
[17]	65	QRect rect = geometry();
[38]	66	setCentralWidget(tabWidget);
[42]	67	#ifndef Q_OS_WINCE
[23]	68	if (settings->value("SavePos",false).toBool()) {
[21]	69	// Loading of saved window state
[23]	70	settings->beginGroup("MainWindow");
	71	resize(settings->value("Size",size()).toSize());
	72	move(settings->value("Position",pos()).toPoint());
	73	if (settings->value("Maximized",false).toBool())
[21]	74	setWindowState(windowState() \| Qt::WindowMaximized);
[23]	75	settings->endGroup();
[21]	76	} else {
	77	// Centering main window
	78	rect.moveCenter(QApplication::desktop()->availableGeometry(this).center());
	79	setGeometry(rect);
	80	}
[17]	81	#endif // Q_OS_WINCE
[11]	82	qsrand(QDateTime().currentDateTime().toTime_t());
[15]	83	tspmodel = new CTSPModel();
	84	tspmodel->setNumCities(spinCities->value());
	85	taskView->setModel(tspmodel);
[31]	86	connect(tspmodel,SIGNAL(numCitiesChanged(int)),this,SLOT(numCitiesChanged(int)));
[37]	87	connect(tspmodel,SIGNAL(dataChanged(const QModelIndex &, const QModelIndex &)),this,SLOT(dataChanged()));
	88	connect(tspmodel,SIGNAL(layoutChanged()),this,SLOT(dataChanged()));
[47]	89	if ((QCoreApplication::arguments().count() > 1) && (tspmodel->loadTask(QCoreApplication::arguments().at(1)))) {
	90	setFileName(QCoreApplication::arguments().at(1));
[45]	91	setWindowModified(false);
[47]	92	} else
	93	setFileName();
[21]	94	#ifdef Q_OS_WINCE
	95	taskView->resizeColumnsToContents();
	96	taskView->resizeRowsToContents();
	97	#endif // Q_OS_WINCE
[6]	98	}
	99
[42]	100	void MainWindow::enableSolutionActions(bool enable)
	101	{
	102	actionFileSaveAsSolution->setEnabled(enable);
	103	solutionText->setEnabled(enable);
	104	if (!enable)
	105	output.clear();
	106	}
	107
[30]	108	bool MainWindow::loadLanguage(QString lang)
[4]	109	{
[29]	110	// i18n
[30]	111	bool ad = false;
	112	if (lang.isEmpty()) {
	113	ad = settings->value("Language","").toString().isEmpty();
	114	lang = settings->value("Language",QLocale::system().name()).toString();
	115	}
[29]	116	static QTranslator *qtTranslator;
	117	if (qtTranslator) {
	118	qApp->removeTranslator(qtTranslator);
	119	delete qtTranslator;
	120	qtTranslator = NULL;
	121	}
	122	qtTranslator = new QTranslator();
[30]	123	static QTranslator *translator;
	124	if (translator) {
	125	qApp->removeTranslator(translator);
	126	delete translator;
	127	}
	128	translator = new QTranslator();
[29]	129	if (lang.compare("en") && !lang.startsWith("en_")) {
	130	// Trying to load system Qt library translation...
	131	if (qtTranslator->load("qt_" + lang,QLibraryInfo::location(QLibraryInfo::TranslationsPath)))
	132	qApp->installTranslator(qtTranslator);
	133	else
	134	// No luck. Let's try to load bundled one.
	135	if (qtTranslator->load("qt_" + lang,"i18n"))
	136	qApp->installTranslator(qtTranslator);
	137	else {
	138	delete qtTranslator;
	139	qtTranslator = NULL;
	140	}
[30]	141	// Now let's load application translation.
[29]	142	if (translator->load(lang,"i18n"))
	143	qApp->installTranslator(translator);
	144	else {
	145	if (!ad)
	146	QMessageBox(QMessageBox::Warning,trUtf8("Language change"),trUtf8("Unable to load translation language."),QMessageBox::Ok,this).exec();
	147	delete translator;
	148	translator = NULL;
	149	return false;
	150	}
	151	}
	152	return true;
	153	}
	154
[42]	155	void MainWindow::initDocStyleSheet()
	156	{
	157	QColor color = settings->value("Output/Color",DEF_FONT_COLOR).value<QColor>();
	158	QColor hilight;
	159	if (color.value() < 192)
	160	hilight.setHsv(color.hue(),color.saturation(),127 + qRound(color.value() / 2));
	161	else
	162	hilight.setHsv(color.hue(),color.saturation(),color.value() / 2);
	163	solutionText->document()->setDefaultStyleSheet("* {color: " + color.name() +";} p {margin: 0px 10px;} table {margin: 5px;} td {padding: 1px 5px;} .hasalts {color: " + hilight.name() + ";} .selected {color: #A00000; font-weight: bold;} .alternate {color: #008000; font-weight: bold;}");
	164	solutionText->document()->setDefaultFont(settings->value("Output/Font",QFont(DEF_FONT_FAMILY,DEF_FONT_SIZE)).value<QFont>());
	165	}
	166
[47]	167	void MainWindow::setFileName(QString fileName)
	168	{
	169	this->fileName = fileName;
	170	setWindowTitle(QString("%1[*] - %2").arg(QFileInfo(fileName).completeBaseName()).arg(trUtf8("Travelling Salesman Problem")));
	171	}
	172
[29]	173	void MainWindow::spinCitiesValueChanged(int n)
	174	{
[21]	175	#ifdef Q_OS_WINCE
	176	int count = tspmodel->numCities();
	177	#endif // Q_OS_WINCE
[15]	178	tspmodel->setNumCities(n);
[21]	179	#ifdef Q_OS_WINCE
	180	if (n > count)
	181	for (int k = count; k < n; k++) {
	182	taskView->resizeColumnToContents(k);
	183	taskView->resizeRowToContents(k);
	184	}
	185	#endif // Q_OS_WINCE
[1]	186	}
	187
[47]	188	bool MainWindow::maybeSave()
	189	{
	190	if (!isWindowModified())
	191	return true;
	192	int res = QMessageBox(QMessageBox::Warning,trUtf8("Unsaved Changes"),trUtf8("Would you like to save changes in current task?"),QMessageBox::Save \| QMessageBox::Discard \| QMessageBox::Cancel,this).exec();
	193	if (res == QMessageBox::Save)
	194	return saveTask();
	195	else if (res == QMessageBox::Cancel)
	196	return false;
	197	else
	198	return true;
	199	}
[29]	200
	201	void MainWindow::actionFileNewTriggered()
[1]	202	{
[47]	203	if (!maybeSave())
	204	return;
[29]	205	tspmodel->clear();
[47]	206	#ifdef Q_OS_WINCE
	207	taskView->resizeColumnsToContents();
	208	taskView->resizeRowsToContents();
	209	#endif
	210	setFileName();
[37]	211	setWindowModified(false);
[42]	212	tabWidget->setCurrentIndex(0);
	213	solutionText->clear();
	214	enableSolutionActions(false);
[29]	215	}
	216
[31]	217	void MainWindow::actionFileOpenTriggered()
	218	{
[47]	219	if (!maybeSave())
	220	return;
[31]	221	QFileDialog od(this);
	222	od.setAcceptMode(QFileDialog::AcceptOpen);
	223	od.setFileMode(QFileDialog::ExistingFile);
	224	QStringList filters(trUtf8("All Supported Formats") + " (.tspt .zkt)");
[47]	225	filters.append(trUtf8("%1 Task Files").arg("TSPSG") + " (*.tspt)");
	226	filters.append(trUtf8("%1 Task Files").arg("ZKomModRd") + " (*.zkt)");
[31]	227	filters.append(trUtf8("All Files") + " (*)");
	228	od.setNameFilters(filters);
	229	if (od.exec() != QDialog::Accepted)
	230	return;
	231	QStringList files = od.selectedFiles();
[47]	232	if (files.empty())
[31]	233	return;
[47]	234	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
	235	if (!tspmodel->loadTask(files.first())) {
	236	QApplication::restoreOverrideCursor();
	237	return;
	238	}
	239	setFileName(files.first());
	240	#ifdef Q_OS_WINCE
	241	taskView->resizeColumnsToContents();
	242	taskView->resizeRowsToContents();
	243	#endif
	244	tabWidget->setCurrentIndex(0);
[37]	245	setWindowModified(false);
[42]	246	solutionText->clear();
	247	enableSolutionActions(false);
[47]	248	QApplication::restoreOverrideCursor();
[31]	249	}
	250
[42]	251	void MainWindow::actionFileSaveAsTaskTriggered()
[31]	252	{
[37]	253	saveTask();
	254	}
	255
[42]	256	void MainWindow::actionFileSaveAsSolutionTriggered()
	257	{
	258	static QString selectedFile;
	259	if (selectedFile.isEmpty())
	260	selectedFile = "solution.html";
	261	QFileDialog sd(this);
	262	sd.setAcceptMode(QFileDialog::AcceptSave);
	263	QStringList filters(trUtf8("HTML Files") + " (.html .htm)");
[45]	264	#if QT_VERSION >= 0x040500
[42]	265	filters.append(trUtf8("OpenDocument Files") + " (*.odt)");
[45]	266	#endif // QT_VERSION >= 0x040500
[42]	267	filters.append(trUtf8("All Files") + " (*)");
	268	sd.setNameFilters(filters);
	269	sd.selectFile(selectedFile);
	270	if (sd.exec() != QDialog::Accepted)
	271	return;
	272	QStringList files = sd.selectedFiles();
	273	if (files.empty())
	274	return;
	275	selectedFile = files.first();
[45]	276	#if QT_VERSION >= 0x040500
[42]	277	QTextDocumentWriter dw(selectedFile);
	278	if (!(selectedFile.endsWith(".htm",Qt::CaseInsensitive) \|\| selectedFile.endsWith(".html",Qt::CaseInsensitive) \|\| selectedFile.endsWith(".odt",Qt::CaseInsensitive) \|\| selectedFile.endsWith(".txt",Qt::CaseInsensitive)))
	279	dw.setFormat("plaintext");
	280	dw.write(solutionText->document());
[45]	281	#else
	282	// Qt < 4.5 has no QTextDocumentWriter class
	283	QFile file(selectedFile);
	284	if (!file.open(QFile::WriteOnly))
	285	return;
	286	QTextStream ts(&file);
	287	ts.setCodec(QTextCodec::codecForName("UTF-8"));
	288	ts << solutionText->document()->toHtml("UTF-8");
	289	#endif // QT_VERSION >= 0x040500
[42]	290	}
	291
[37]	292	bool MainWindow::saveTask() {
[31]	293	QFileDialog sd(this);
	294	sd.setAcceptMode(QFileDialog::AcceptSave);
[47]	295	QStringList filters(trUtf8("%1 Task File").arg("TSPSG") + " (*.tspt)");
[31]	296	filters.append(trUtf8("All Files") + " (*)");
	297	sd.setNameFilters(filters);
	298	sd.setDefaultSuffix("tspt");
[47]	299	if (fileName.endsWith(".tspt",Qt::CaseInsensitive))
	300	sd.selectFile(fileName);
	301	else
	302	sd.selectFile(QFileInfo(fileName).canonicalPath() + "/" + QFileInfo(fileName).completeBaseName() + ".tspt");
[31]	303	if (sd.exec() != QDialog::Accepted)
[37]	304	return false;
[31]	305	QStringList files = sd.selectedFiles();
[47]	306	if (files.empty())
[37]	307	return false;
[47]	308	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
[37]	309	if (tspmodel->saveTask(files.first())) {
[47]	310	setFileName(files.first());
[37]	311	setWindowModified(false);
[47]	312	QApplication::restoreOverrideCursor();
[37]	313	return true;
[47]	314	}
	315	QApplication::restoreOverrideCursor();
	316	return false;
[31]	317	}
	318
[29]	319	void MainWindow::actionSettingsPreferencesTriggered()
	320	{
[1]	321	SettingsDialog sd(this);
[42]	322	if (sd.exec() != QDialog::Accepted)
	323	return;
	324	if (sd.colorChanged() \|\| sd.fontChanged()) {
	325	initDocStyleSheet();
	326	if (!output.isEmpty() && sd.colorChanged() && (QMessageBox(QMessageBox::Question,trUtf8("Settings Changed"),trUtf8("You have changed color settings.\nDo you wish to apply them to current solution text?"),QMessageBox::Yes \| QMessageBox::No,this).exec() == QMessageBox::Yes)) {
	327	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
	328	solutionText->clear();
	329	solutionText->setHtml(output.join(""));
	330	QApplication::restoreOverrideCursor();
	331	}
	332	}
[1]	333	}
[6]	334
[17]	335	#ifndef Q_OS_WINCE
[29]	336	void MainWindow::actionFilePrintSetupTriggered()
[17]	337	{
[29]	338	QPrintDialog pd(printer,this);
[33]	339	#if QT_VERSION >= 0x040500
	340	// No such methods in Qt < 4.5
[29]	341	pd.setOption(QAbstractPrintDialog::PrintSelection,false);
	342	pd.setOption(QAbstractPrintDialog::PrintPageRange,false);
[33]	343	#endif
[17]	344	pd.exec();
	345	}
	346	#endif // Q_OS_WINCE
	347
[29]	348	void MainWindow::buttonRandomClicked()
[6]	349	{
[15]	350	tspmodel->randomize();
[37]	351	setWindowModified(true);
[21]	352	#ifdef Q_OS_WINCE
	353	taskView->resizeColumnsToContents();
	354	taskView->resizeRowsToContents();
	355	#endif // Q_OS_WINCE
[6]	356	}
	357
[42]	358	void MainWindow::outputMatrix(tMatrix matrix, QStringList &output, int nRow, int nCol)
	359	{
	360	int n = spinCities->value();
	361	QString line="";
	362	output.append("<table border=\"0\" cellspacing=\"0\" cellpadding=\"0\">");
	363	for (int r = 0; r < n; r++) {
	364	line = "<tr>";
	365	for (int c = 0; c < n; c++) {
	366	if (matrix[r][c] == INFINITY)
	367	line += "<td align=\"center\">"INFSTR"</td>";
	368	else if ((r == nRow) && (c == nCol))
	369	line += "<td align=\"center\" class=\"selected\">" + QVariant(matrix[r][c]).toString() + "</td>";
	370	else
	371	line += "<td align=\"center\">" + QVariant(matrix[r][c]).toString() + "</td>";
	372	}
	373	line += "</tr>";
	374	output.append(line);
	375	}
	376	output.append("</table>");
	377	}
	378
[29]	379	void MainWindow::buttonSolveClicked()
[6]	380	{
[13]	381	tMatrix matrix;
[42]	382	QList<double> row;
[15]	383	int n = spinCities->value();
[13]	384	bool ok;
[15]	385	for (int r = 0; r < n; r++) {
[42]	386	row.clear();
[15]	387	for (int c = 0; c < n; c++) {
[42]	388	row.append(tspmodel->index(r,c).data(Qt::UserRole).toDouble(&ok));
[15]	389	if (!ok) {
[47]	390	QMessageBox(QMessageBox::Critical,trUtf8("Data error"),trUtf8("Error in cell [Row %1; Column %2]: Invalid data format.").arg(r + 1).arg(c + 1),QMessageBox::Ok,this).exec();
[15]	391	return;
[13]	392	}
	393	}
	394	matrix.append(row);
	395	}
	396	CTSPSolver solver;
	397	sStep *root = solver.solve(spinCities->value(),matrix);
	398	if (!root)
[42]	399	return;
	400	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
	401	QColor color = settings->value("Output/Color",DEF_FONT_COLOR).value<QColor>();
	402	output.clear();
	403	output.append("<p>" + trUtf8("Variant #%1").arg(spinVariant->value()) + "</p>");
	404	output.append("<p>" + trUtf8("Task:") + "</p>");
	405	outputMatrix(matrix,output);
	406	output.append("<hr>");
	407	output.append("<p>" + trUtf8("Solution of Variant #%1 task").arg(spinVariant->value()) + "</p>");
	408	sStep *step = root;
	409	n = 1;
	410	QString path = "";
	411	while (n <= spinCities->value()) {
	412	if (step->prNode->prNode != NULL \|\| (step->prNode->prNode == NULL && step->plNode->prNode == NULL)) {
	413	if (n != spinCities->value()) {
	414	output.append("<p>" + trUtf8("Step #%1").arg(n++) + "</p>");
	415	outputMatrix(step->matrix,output,step->candidate.nRow,step->candidate.nCol);
	416	if (step->alts)
	417	output.append("<p class=\"hasalts\">" + trUtf8("This step has alternate candidates for branching.") + "</p>");
	418	output.append("<p> </p>");
	419	}
	420	path += QString(" (%1,%2)").arg(step->candidate.nRow + 1).arg(step->candidate.nCol + 1);
	421	}
	422	if (step->prNode->prNode != NULL)
	423	step = step->prNode;
	424	else if (step->plNode->prNode != NULL)
	425	step = step->plNode;
	426	else
	427	break;
	428	}
	429	output.append("<p>" + trUtf8("Optimal path:") + "</p>");
	430	output.append("<p>  " + path + "</p>");
	431	output.append("<p>" + trUtf8("The price is <b>%1</b> units.").arg(step->price) + "</p>");
	432	solutionText->setHtml(output.join(""));
	433	solutionText->setDocumentTitle(trUtf8("Solution of Variant #%1 task").arg(spinVariant->value()));
	434	enableSolutionActions();
	435	tabWidget->setCurrentIndex(1);
	436	QApplication::restoreOverrideCursor();
[6]	437	}
[21]	438
[29]	439	void MainWindow::actionHelpAboutTriggered()
[21]	440	{
	441	// TODO: Normal about window :-)
[30]	442	QString about = QString::fromUtf8("TSPSG - TSP Solver and Generator\n");
[45]	443	about += QString::fromUtf8(" Version: "BUILD_VERSION"\n");
[42]	444	about += QString::fromUtf8(" Copyright (C) 2007-%1 Lёppa <contacts[at]oleksii[dot]name>\n").arg(QDate::currentDate().toString("yyyy"));
[37]	445	about += QString::fromUtf8("Target OS: %1\n").arg(OS);
	446	about += "Qt library:\n";
[30]	447	about += QString::fromUtf8(" Compile time: %1\n").arg(QT_VERSION_STR);
	448	about += QString::fromUtf8(" Runtime: %1\n").arg(qVersion());
[41]	449	about += QString::fromUtf8("Built on %1 at %2\n").arg(__DATE__).arg(__TIME__);
[30]	450	about += "\n";
	451	about += "TSPSG is licensed under the terms of the GNU General Public License. You should have received a copy of the GNU General Public License along with TSPSG.";
[27]	452	QMessageBox(QMessageBox::Information,"About",about,QMessageBox::Ok,this).exec();
[21]	453	}
	454
[29]	455	void MainWindow::loadLangList()
	456	{
	457	QSettings langinfo("i18n/languages.ini",QSettings::IniFormat);
[33]	458	#if QT_VERSION >= 0x040500
	459	// In Qt < 4.5 QSettings doesn't have method setIniCodec.
[29]	460	langinfo.setIniCodec("UTF-8");
[33]	461	#endif
[29]	462	QDir dir("i18n","*.qm",QDir::Name \| QDir::IgnoreCase,QDir::Files);
	463	if (!dir.exists())
	464	return;
	465	QFileInfoList langs = dir.entryInfoList();
	466	if (langs.size() <= 0)
	467	return;
	468	QAction *a;
	469	for (int k = 0; k < langs.size(); k++) {
	470	QFileInfo lang = langs.at(k);
[30]	471	if (!lang.completeBaseName().startsWith("qt_") && lang.completeBaseName().compare("en")) {
[33]	472	#if QT_VERSION >= 0x040500
[29]	473	a = menuSettingsLanguage->addAction(langinfo.value(lang.completeBaseName() + "/NativeName",lang.completeBaseName()).toString());
[33]	474	#else
	475	// We use Name if Qt < 4.5 because NativeName is in UTF-8, QSettings
	476	// reads .ini file as ASCII and there is no way to set file encoding.
	477	a = menuSettingsLanguage->addAction(langinfo.value(lang.completeBaseName() + "/Name",lang.completeBaseName()).toString());
	478	#endif
[29]	479	a->setData(lang.completeBaseName());
	480	a->setCheckable(true);
	481	a->setActionGroup(groupSettingsLanguageList);
	482	if (settings->value("Language",QLocale::system().name()).toString().startsWith(lang.completeBaseName()))
	483	a->setChecked(true);
	484	}
	485	}
	486	}
	487
	488	void MainWindow::actionSettingsLanguageAutodetectTriggered(bool checked)
	489	{
	490	if (checked) {
	491	settings->remove("Language");
	492	QMessageBox(QMessageBox::Information,trUtf8("Language change"),trUtf8("Language will be autodetected on next application start."),QMessageBox::Ok,this).exec();
	493	} else
	494	settings->setValue("Language",groupSettingsLanguageList->checkedAction()->data().toString());
	495	}
	496
	497	void MainWindow::groupSettingsLanguageListTriggered(QAction *action)
	498	{
	499	if (actionSettingsLanguageAutodetect->isChecked()) {
	500	// We have language autodetection. It needs to be disabled to change language.
	501	if (QMessageBox(QMessageBox::Question,trUtf8("Language change"),trUtf8("You have language autodetection turned on.\nIt needs to be off.\nDo you wish to turn it off?"),QMessageBox::Yes \| QMessageBox::No,this).exec() == QMessageBox::Yes) {
	502	actionSettingsLanguageAutodetect->trigger();
	503	} else
	504	return;
	505	}
[47]	506	bool untitled = (fileName == trUtf8("Untitled") + ".tspt");
[30]	507	if (loadLanguage(action->data().toString())) {
[29]	508	settings->setValue("Language",action->data().toString());
	509	retranslateUi(this);
[47]	510	if (untitled)
	511	setFileName();
[29]	512	}
	513	}
	514
[21]	515	void MainWindow::closeEvent(QCloseEvent *event)
	516	{
[47]	517	if (!maybeSave()) {
	518	event->ignore();
	519	return;
[37]	520	}
[26]	521	settings->setValue("NumCities",spinCities->value());
	522	#ifndef Q_OS_WINCE
[21]	523	// Saving windows state
[23]	524	if (settings->value("SavePos",false).toBool()) {
	525	settings->beginGroup("MainWindow");
	526	settings->setValue("Maximized",isMaximized());
[21]	527	if (!isMaximized()) {
[23]	528	settings->setValue("Size",size());
	529	settings->setValue("Position",pos());
[21]	530	}
[23]	531	settings->endGroup();
[21]	532	}
[26]	533	#endif // Q_OS_WINCE
[21]	534	QMainWindow::closeEvent(event);
	535	}
[31]	536
[37]	537	void MainWindow::dataChanged()
	538	{
	539	setWindowModified(true);
	540	}
	541
[31]	542	void MainWindow::numCitiesChanged(int nCities)
	543	{
	544	spinCities->setValue(nCities);
	545	}

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