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source: tspsg-svn/trunk/src/mainwindow.cpp @ 51

Last change on this file since 51 was 51, checked in by laleppa, 15 years ago
Fixed wrong signal sender in mainwindow.ce.ui.
Property svn:keywords set to `Id URL`
File size: 20.3 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 51 2009-08-03 21:39:07Z 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();
[50]	48	spinCities->setMaximum(MAX_NUM_CITIES);
[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()));
[50]	52	connect(actionFileSave,SIGNAL(triggered()),this,SLOT(actionFileSaveTriggered()));
[42]	53	connect(actionFileSaveAsTask,SIGNAL(triggered()),this,SLOT(actionFileSaveAsTaskTriggered()));
	54	connect(actionFileSaveAsSolution,SIGNAL(triggered()),this,SLOT(actionFileSaveAsSolutionTriggered()));
[29]	55	connect(actionSettingsPreferences,SIGNAL(triggered()),this,SLOT(actionSettingsPreferencesTriggered()));
	56	connect(actionSettingsLanguageAutodetect,SIGNAL(triggered(bool)),this,SLOT(actionSettingsLanguageAutodetectTriggered(bool)));
	57	connect(groupSettingsLanguageList,SIGNAL(triggered(QAction )),this,SLOT(groupSettingsLanguageListTriggered(QAction )));
[37]	58	connect(actionHelpAboutQt,SIGNAL(triggered()),qApp,SLOT(aboutQt()));
[29]	59	connect(actionHelpAbout,SIGNAL(triggered()),this,SLOT(actionHelpAboutTriggered()));
[17]	60	#ifndef Q_OS_WINCE
[29]	61	connect(actionFilePrintSetup,SIGNAL(triggered()),this,SLOT(actionFilePrintSetupTriggered()));
[17]	62	#endif // Q_OS_WINCE
[29]	63	connect(buttonSolve,SIGNAL(clicked()),this,SLOT(buttonSolveClicked()));
	64	connect(buttonRandom,SIGNAL(clicked()),this,SLOT(buttonRandomClicked()));
[50]	65	connect(buttonBackToTask,SIGNAL(clicked()),this,SLOT(buttonBackToTaskClicked()));
[29]	66	connect(spinCities,SIGNAL(valueChanged(int)),this,SLOT(spinCitiesValueChanged(int)));
[50]	67	setCentralWidget(tabWidget);
[17]	68	QRect rect = geometry();
[42]	69	#ifndef Q_OS_WINCE
[23]	70	if (settings->value("SavePos",false).toBool()) {
[21]	71	// Loading of saved window state
[23]	72	settings->beginGroup("MainWindow");
	73	resize(settings->value("Size",size()).toSize());
	74	move(settings->value("Position",pos()).toPoint());
	75	if (settings->value("Maximized",false).toBool())
[21]	76	setWindowState(windowState() \| Qt::WindowMaximized);
[23]	77	settings->endGroup();
[21]	78	} else {
	79	// Centering main window
	80	rect.moveCenter(QApplication::desktop()->availableGeometry(this).center());
	81	setGeometry(rect);
	82	}
[17]	83	#endif // Q_OS_WINCE
[11]	84	qsrand(QDateTime().currentDateTime().toTime_t());
[15]	85	tspmodel = new CTSPModel();
[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()));
[50]	89	if ((QCoreApplication::arguments().count() > 1) && (tspmodel->loadTask(QCoreApplication::arguments().at(1))))
[47]	90	setFileName(QCoreApplication::arguments().at(1));
[50]	91	else {
[47]	92	setFileName();
[50]	93	spinCities->setValue(settings->value("NumCities",DEF_NUM_CITIES).toInt());
[51]	94	tspmodel->setNumCities(spinCities->value());
[50]	95	}
	96	taskView->setModel(tspmodel);
	97	setWindowModified(false);
[21]	98	taskView->resizeColumnsToContents();
	99	taskView->resizeRowsToContents();
[6]	100	}
	101
[42]	102	void MainWindow::enableSolutionActions(bool enable)
	103	{
[50]	104	buttonSaveSolution->setEnabled(enable);
[42]	105	actionFileSaveAsSolution->setEnabled(enable);
	106	solutionText->setEnabled(enable);
	107	if (!enable)
	108	output.clear();
	109	}
	110
[30]	111	bool MainWindow::loadLanguage(QString lang)
[4]	112	{
[29]	113	// i18n
[30]	114	bool ad = false;
	115	if (lang.isEmpty()) {
	116	ad = settings->value("Language","").toString().isEmpty();
	117	lang = settings->value("Language",QLocale::system().name()).toString();
	118	}
[29]	119	static QTranslator *qtTranslator;
	120	if (qtTranslator) {
	121	qApp->removeTranslator(qtTranslator);
	122	delete qtTranslator;
	123	qtTranslator = NULL;
	124	}
	125	qtTranslator = new QTranslator();
[30]	126	static QTranslator *translator;
	127	if (translator) {
	128	qApp->removeTranslator(translator);
	129	delete translator;
	130	}
	131	translator = new QTranslator();
[29]	132	if (lang.compare("en") && !lang.startsWith("en_")) {
	133	// Trying to load system Qt library translation...
	134	if (qtTranslator->load("qt_" + lang,QLibraryInfo::location(QLibraryInfo::TranslationsPath)))
	135	qApp->installTranslator(qtTranslator);
	136	else
	137	// No luck. Let's try to load bundled one.
	138	if (qtTranslator->load("qt_" + lang,"i18n"))
	139	qApp->installTranslator(qtTranslator);
	140	else {
	141	delete qtTranslator;
	142	qtTranslator = NULL;
	143	}
[30]	144	// Now let's load application translation.
[29]	145	if (translator->load(lang,"i18n"))
	146	qApp->installTranslator(translator);
	147	else {
	148	if (!ad)
	149	QMessageBox(QMessageBox::Warning,trUtf8("Language change"),trUtf8("Unable to load translation language."),QMessageBox::Ok,this).exec();
	150	delete translator;
	151	translator = NULL;
	152	return false;
	153	}
	154	}
	155	return true;
	156	}
	157
[42]	158	void MainWindow::initDocStyleSheet()
	159	{
	160	QColor color = settings->value("Output/Color",DEF_FONT_COLOR).value<QColor>();
	161	QColor hilight;
	162	if (color.value() < 192)
	163	hilight.setHsv(color.hue(),color.saturation(),127 + qRound(color.value() / 2));
	164	else
	165	hilight.setHsv(color.hue(),color.saturation(),color.value() / 2);
	166	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;}");
	167	solutionText->document()->setDefaultFont(settings->value("Output/Font",QFont(DEF_FONT_FAMILY,DEF_FONT_SIZE)).value<QFont>());
	168	}
	169
[47]	170	void MainWindow::setFileName(QString fileName)
	171	{
	172	this->fileName = fileName;
	173	setWindowTitle(QString("%1[*] - %2").arg(QFileInfo(fileName).completeBaseName()).arg(trUtf8("Travelling Salesman Problem")));
	174	}
	175
[29]	176	void MainWindow::spinCitiesValueChanged(int n)
	177	{
[21]	178	int count = tspmodel->numCities();
[15]	179	tspmodel->setNumCities(n);
[21]	180	if (n > count)
	181	for (int k = count; k < n; k++) {
	182	taskView->resizeColumnToContents(k);
	183	taskView->resizeRowToContents(k);
	184	}
[1]	185	}
	186
[47]	187	bool MainWindow::maybeSave()
	188	{
	189	if (!isWindowModified())
	190	return true;
	191	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();
	192	if (res == QMessageBox::Save)
	193	return saveTask();
	194	else if (res == QMessageBox::Cancel)
	195	return false;
	196	else
	197	return true;
	198	}
[29]	199
	200	void MainWindow::actionFileNewTriggered()
[1]	201	{
[47]	202	if (!maybeSave())
	203	return;
[29]	204	tspmodel->clear();
[47]	205	taskView->resizeColumnsToContents();
	206	taskView->resizeRowsToContents();
	207	setFileName();
[37]	208	setWindowModified(false);
[42]	209	tabWidget->setCurrentIndex(0);
	210	solutionText->clear();
	211	enableSolutionActions(false);
[29]	212	}
	213
[31]	214	void MainWindow::actionFileOpenTriggered()
	215	{
[47]	216	if (!maybeSave())
	217	return;
[31]	218	QFileDialog od(this);
	219	od.setAcceptMode(QFileDialog::AcceptOpen);
	220	od.setFileMode(QFileDialog::ExistingFile);
	221	QStringList filters(trUtf8("All Supported Formats") + " (.tspt .zkt)");
[47]	222	filters.append(trUtf8("%1 Task Files").arg("TSPSG") + " (*.tspt)");
	223	filters.append(trUtf8("%1 Task Files").arg("ZKomModRd") + " (*.zkt)");
[31]	224	filters.append(trUtf8("All Files") + " (*)");
	225	od.setNameFilters(filters);
	226	if (od.exec() != QDialog::Accepted)
	227	return;
	228	QStringList files = od.selectedFiles();
[47]	229	if (files.empty())
[31]	230	return;
[47]	231	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
	232	if (!tspmodel->loadTask(files.first())) {
	233	QApplication::restoreOverrideCursor();
	234	return;
	235	}
	236	setFileName(files.first());
	237	taskView->resizeColumnsToContents();
	238	taskView->resizeRowsToContents();
	239	tabWidget->setCurrentIndex(0);
[37]	240	setWindowModified(false);
[42]	241	solutionText->clear();
	242	enableSolutionActions(false);
[47]	243	QApplication::restoreOverrideCursor();
[31]	244	}
	245
[50]	246	void MainWindow::actionFileSaveTriggered()
	247	{
	248	if ((fileName == trUtf8("Untitled") + ".tspt") \|\| (!fileName.endsWith(".tspt",Qt::CaseInsensitive)))
	249	saveTask();
	250	else {
	251	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
	252	if (tspmodel->saveTask(fileName))
	253	setWindowModified(false);
	254	QApplication::restoreOverrideCursor();
	255	}
	256	}
	257
[42]	258	void MainWindow::actionFileSaveAsTaskTriggered()
[31]	259	{
[37]	260	saveTask();
	261	}
	262
[42]	263	void MainWindow::actionFileSaveAsSolutionTriggered()
	264	{
	265	static QString selectedFile;
	266	if (selectedFile.isEmpty())
	267	selectedFile = "solution.html";
	268	QFileDialog sd(this);
	269	sd.setAcceptMode(QFileDialog::AcceptSave);
	270	QStringList filters(trUtf8("HTML Files") + " (.html .htm)");
[45]	271	#if QT_VERSION >= 0x040500
[42]	272	filters.append(trUtf8("OpenDocument Files") + " (*.odt)");
[45]	273	#endif // QT_VERSION >= 0x040500
[42]	274	filters.append(trUtf8("All Files") + " (*)");
	275	sd.setNameFilters(filters);
	276	sd.selectFile(selectedFile);
	277	if (sd.exec() != QDialog::Accepted)
	278	return;
	279	QStringList files = sd.selectedFiles();
	280	if (files.empty())
	281	return;
	282	selectedFile = files.first();
[51]	283	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
[45]	284	#if QT_VERSION >= 0x040500
[42]	285	QTextDocumentWriter dw(selectedFile);
	286	if (!(selectedFile.endsWith(".htm",Qt::CaseInsensitive) \|\| selectedFile.endsWith(".html",Qt::CaseInsensitive) \|\| selectedFile.endsWith(".odt",Qt::CaseInsensitive) \|\| selectedFile.endsWith(".txt",Qt::CaseInsensitive)))
	287	dw.setFormat("plaintext");
	288	dw.write(solutionText->document());
[45]	289	#else
	290	// Qt < 4.5 has no QTextDocumentWriter class
	291	QFile file(selectedFile);
[51]	292	if (!file.open(QFile::WriteOnly)) {
	293	QApplication::restoreOverrideCursor();
[45]	294	return;
[51]	295	}
[45]	296	QTextStream ts(&file);
	297	ts.setCodec(QTextCodec::codecForName("UTF-8"));
	298	ts << solutionText->document()->toHtml("UTF-8");
[51]	299	file.close();
[45]	300	#endif // QT_VERSION >= 0x040500
[51]	301	QApplication::restoreOverrideCursor();
[42]	302	}
	303
[37]	304	bool MainWindow::saveTask() {
[31]	305	QFileDialog sd(this);
	306	sd.setAcceptMode(QFileDialog::AcceptSave);
[47]	307	QStringList filters(trUtf8("%1 Task File").arg("TSPSG") + " (*.tspt)");
[31]	308	filters.append(trUtf8("All Files") + " (*)");
	309	sd.setNameFilters(filters);
	310	sd.setDefaultSuffix("tspt");
[47]	311	if (fileName.endsWith(".tspt",Qt::CaseInsensitive))
	312	sd.selectFile(fileName);
	313	else
	314	sd.selectFile(QFileInfo(fileName).canonicalPath() + "/" + QFileInfo(fileName).completeBaseName() + ".tspt");
[31]	315	if (sd.exec() != QDialog::Accepted)
[37]	316	return false;
[31]	317	QStringList files = sd.selectedFiles();
[47]	318	if (files.empty())
[37]	319	return false;
[47]	320	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
[37]	321	if (tspmodel->saveTask(files.first())) {
[47]	322	setFileName(files.first());
[37]	323	setWindowModified(false);
[47]	324	QApplication::restoreOverrideCursor();
[37]	325	return true;
[47]	326	}
	327	QApplication::restoreOverrideCursor();
	328	return false;
[31]	329	}
	330
[29]	331	void MainWindow::actionSettingsPreferencesTriggered()
	332	{
[1]	333	SettingsDialog sd(this);
[42]	334	if (sd.exec() != QDialog::Accepted)
	335	return;
	336	if (sd.colorChanged() \|\| sd.fontChanged()) {
	337	initDocStyleSheet();
	338	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)) {
	339	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
	340	solutionText->clear();
	341	solutionText->setHtml(output.join(""));
	342	QApplication::restoreOverrideCursor();
	343	}
	344	}
[1]	345	}
[6]	346
[17]	347	#ifndef Q_OS_WINCE
[29]	348	void MainWindow::actionFilePrintSetupTriggered()
[17]	349	{
[29]	350	QPrintDialog pd(printer,this);
[33]	351	#if QT_VERSION >= 0x040500
	352	// No such methods in Qt < 4.5
[29]	353	pd.setOption(QAbstractPrintDialog::PrintSelection,false);
	354	pd.setOption(QAbstractPrintDialog::PrintPageRange,false);
[33]	355	#endif
[17]	356	pd.exec();
	357	}
	358	#endif // Q_OS_WINCE
	359
[29]	360	void MainWindow::buttonRandomClicked()
[6]	361	{
[15]	362	tspmodel->randomize();
[37]	363	setWindowModified(true);
[21]	364	taskView->resizeColumnsToContents();
	365	taskView->resizeRowsToContents();
[6]	366	}
	367
[50]	368	void MainWindow::buttonBackToTaskClicked()
	369	{
	370	tabWidget->setCurrentIndex(0);
	371	}
	372
[42]	373	void MainWindow::outputMatrix(tMatrix matrix, QStringList &output, int nRow, int nCol)
	374	{
	375	int n = spinCities->value();
	376	QString line="";
	377	output.append("<table border=\"0\" cellspacing=\"0\" cellpadding=\"0\">");
	378	for (int r = 0; r < n; r++) {
	379	line = "<tr>";
	380	for (int c = 0; c < n; c++) {
	381	if (matrix[r][c] == INFINITY)
	382	line += "<td align=\"center\">"INFSTR"</td>";
	383	else if ((r == nRow) && (c == nCol))
	384	line += "<td align=\"center\" class=\"selected\">" + QVariant(matrix[r][c]).toString() + "</td>";
	385	else
	386	line += "<td align=\"center\">" + QVariant(matrix[r][c]).toString() + "</td>";
	387	}
	388	line += "</tr>";
	389	output.append(line);
	390	}
	391	output.append("</table>");
	392	}
	393
[29]	394	void MainWindow::buttonSolveClicked()
[6]	395	{
[13]	396	tMatrix matrix;
[42]	397	QList<double> row;
[15]	398	int n = spinCities->value();
[13]	399	bool ok;
[15]	400	for (int r = 0; r < n; r++) {
[42]	401	row.clear();
[15]	402	for (int c = 0; c < n; c++) {
[42]	403	row.append(tspmodel->index(r,c).data(Qt::UserRole).toDouble(&ok));
[15]	404	if (!ok) {
[47]	405	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]	406	return;
[13]	407	}
	408	}
	409	matrix.append(row);
	410	}
	411	CTSPSolver solver;
[50]	412	sStep *root = solver.solve(n,matrix,this);
[13]	413	if (!root)
[42]	414	return;
	415	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
	416	QColor color = settings->value("Output/Color",DEF_FONT_COLOR).value<QColor>();
	417	output.clear();
	418	output.append("<p>" + trUtf8("Variant #%1").arg(spinVariant->value()) + "</p>");
	419	output.append("<p>" + trUtf8("Task:") + "</p>");
	420	outputMatrix(matrix,output);
	421	output.append("<hr>");
	422	output.append("<p>" + trUtf8("Solution of Variant #%1 task").arg(spinVariant->value()) + "</p>");
	423	sStep *step = root;
	424	n = 1;
	425	QString path = "";
	426	while (n <= spinCities->value()) {
	427	if (step->prNode->prNode != NULL \|\| (step->prNode->prNode == NULL && step->plNode->prNode == NULL)) {
	428	if (n != spinCities->value()) {
	429	output.append("<p>" + trUtf8("Step #%1").arg(n++) + "</p>");
	430	outputMatrix(step->matrix,output,step->candidate.nRow,step->candidate.nCol);
	431	if (step->alts)
	432	output.append("<p class=\"hasalts\">" + trUtf8("This step has alternate candidates for branching.") + "</p>");
	433	output.append("<p> </p>");
	434	}
	435	path += QString(" (%1,%2)").arg(step->candidate.nRow + 1).arg(step->candidate.nCol + 1);
	436	}
	437	if (step->prNode->prNode != NULL)
	438	step = step->prNode;
	439	else if (step->plNode->prNode != NULL)
	440	step = step->plNode;
	441	else
	442	break;
	443	}
	444	output.append("<p>" + trUtf8("Optimal path:") + "</p>");
	445	output.append("<p>  " + path + "</p>");
	446	output.append("<p>" + trUtf8("The price is <b>%1</b> units.").arg(step->price) + "</p>");
	447	solutionText->setHtml(output.join(""));
	448	solutionText->setDocumentTitle(trUtf8("Solution of Variant #%1 task").arg(spinVariant->value()));
	449	enableSolutionActions();
	450	tabWidget->setCurrentIndex(1);
	451	QApplication::restoreOverrideCursor();
[6]	452	}
[21]	453
[29]	454	void MainWindow::actionHelpAboutTriggered()
[21]	455	{
	456	// TODO: Normal about window :-)
[30]	457	QString about = QString::fromUtf8("TSPSG - TSP Solver and Generator\n");
[45]	458	about += QString::fromUtf8(" Version: "BUILD_VERSION"\n");
[42]	459	about += QString::fromUtf8(" Copyright (C) 2007-%1 Lёppa <contacts[at]oleksii[dot]name>\n").arg(QDate::currentDate().toString("yyyy"));
[37]	460	about += QString::fromUtf8("Target OS: %1\n").arg(OS);
	461	about += "Qt library:\n";
[30]	462	about += QString::fromUtf8(" Compile time: %1\n").arg(QT_VERSION_STR);
	463	about += QString::fromUtf8(" Runtime: %1\n").arg(qVersion());
[41]	464	about += QString::fromUtf8("Built on %1 at %2\n").arg(__DATE__).arg(__TIME__);
[30]	465	about += "\n";
	466	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]	467	QMessageBox(QMessageBox::Information,"About",about,QMessageBox::Ok,this).exec();
[21]	468	}
	469
[29]	470	void MainWindow::loadLangList()
	471	{
	472	QSettings langinfo("i18n/languages.ini",QSettings::IniFormat);
[33]	473	#if QT_VERSION >= 0x040500
	474	// In Qt < 4.5 QSettings doesn't have method setIniCodec.
[29]	475	langinfo.setIniCodec("UTF-8");
[33]	476	#endif
[29]	477	QDir dir("i18n","*.qm",QDir::Name \| QDir::IgnoreCase,QDir::Files);
	478	if (!dir.exists())
	479	return;
	480	QFileInfoList langs = dir.entryInfoList();
	481	if (langs.size() <= 0)
	482	return;
	483	QAction *a;
	484	for (int k = 0; k < langs.size(); k++) {
	485	QFileInfo lang = langs.at(k);
[30]	486	if (!lang.completeBaseName().startsWith("qt_") && lang.completeBaseName().compare("en")) {
[33]	487	#if QT_VERSION >= 0x040500
[29]	488	a = menuSettingsLanguage->addAction(langinfo.value(lang.completeBaseName() + "/NativeName",lang.completeBaseName()).toString());
[33]	489	#else
	490	// We use Name if Qt < 4.5 because NativeName is in UTF-8, QSettings
	491	// reads .ini file as ASCII and there is no way to set file encoding.
	492	a = menuSettingsLanguage->addAction(langinfo.value(lang.completeBaseName() + "/Name",lang.completeBaseName()).toString());
	493	#endif
[29]	494	a->setData(lang.completeBaseName());
	495	a->setCheckable(true);
	496	a->setActionGroup(groupSettingsLanguageList);
	497	if (settings->value("Language",QLocale::system().name()).toString().startsWith(lang.completeBaseName()))
	498	a->setChecked(true);
	499	}
	500	}
	501	}
	502
	503	void MainWindow::actionSettingsLanguageAutodetectTriggered(bool checked)
	504	{
	505	if (checked) {
	506	settings->remove("Language");
	507	QMessageBox(QMessageBox::Information,trUtf8("Language change"),trUtf8("Language will be autodetected on next application start."),QMessageBox::Ok,this).exec();
	508	} else
	509	settings->setValue("Language",groupSettingsLanguageList->checkedAction()->data().toString());
	510	}
	511
	512	void MainWindow::groupSettingsLanguageListTriggered(QAction *action)
	513	{
	514	if (actionSettingsLanguageAutodetect->isChecked()) {
	515	// We have language autodetection. It needs to be disabled to change language.
	516	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) {
	517	actionSettingsLanguageAutodetect->trigger();
	518	} else
	519	return;
	520	}
[47]	521	bool untitled = (fileName == trUtf8("Untitled") + ".tspt");
[30]	522	if (loadLanguage(action->data().toString())) {
[29]	523	settings->setValue("Language",action->data().toString());
	524	retranslateUi(this);
[47]	525	if (untitled)
	526	setFileName();
[29]	527	}
	528	}
	529
[21]	530	void MainWindow::closeEvent(QCloseEvent *event)
	531	{
[47]	532	if (!maybeSave()) {
	533	event->ignore();
	534	return;
[37]	535	}
[26]	536	settings->setValue("NumCities",spinCities->value());
	537	#ifndef Q_OS_WINCE
[21]	538	// Saving windows state
[23]	539	if (settings->value("SavePos",false).toBool()) {
	540	settings->beginGroup("MainWindow");
	541	settings->setValue("Maximized",isMaximized());
[21]	542	if (!isMaximized()) {
[23]	543	settings->setValue("Size",size());
	544	settings->setValue("Position",pos());
[21]	545	}
[23]	546	settings->endGroup();
[21]	547	}
[26]	548	#endif // Q_OS_WINCE
[21]	549	QMainWindow::closeEvent(event);
	550	}
[31]	551
[37]	552	void MainWindow::dataChanged()
	553	{
	554	setWindowModified(true);
	555	}
	556
[31]	557	void MainWindow::numCitiesChanged(int nCities)
	558	{
[50]	559	blockSignals(true);
[31]	560	spinCities->setValue(nCities);
[50]	561	blockSignals(false);
[31]	562	}

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