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source: tspsg-svn/trunk/src/mainwindow.cpp @ 44

Last change on this file since 44 was 42, checked in by laleppa, 15 years ago

+ Finished solving algorithm (needs thorough testing).
+ Solution can be saved to HTML or OpenDocument? format.
+ Added VERSIONINFO resource for windows builds.

Updated translations to have unified terminology everywhere.

NB: This will be the first public alpha build.

Property svn:keywords set to Id URL

File size: 18.4 KB

Rev	Line
[42]	1	/*
	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 42 2009-07-31 18:23:07Z 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();
[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()));
[21]	89	#ifdef Q_OS_WINCE
	90	taskView->resizeColumnsToContents();
	91	taskView->resizeRowsToContents();
	92	#endif // Q_OS_WINCE
[6]	93	}
	94
[42]	95	void MainWindow::enableSolutionActions(bool enable)
	96	{
	97	actionFileSaveAsSolution->setEnabled(enable);
	98	solutionText->setEnabled(enable);
	99	if (!enable)
	100	output.clear();
	101	}
	102
[30]	103	bool MainWindow::loadLanguage(QString lang)
[4]	104	{
[29]	105	// i18n
[30]	106	bool ad = false;
	107	if (lang.isEmpty()) {
	108	ad = settings->value("Language","").toString().isEmpty();
	109	lang = settings->value("Language",QLocale::system().name()).toString();
	110	}
[29]	111	static QTranslator *qtTranslator;
	112	if (qtTranslator) {
	113	qApp->removeTranslator(qtTranslator);
	114	delete qtTranslator;
	115	qtTranslator = NULL;
	116	}
	117	qtTranslator = new QTranslator();
[30]	118	static QTranslator *translator;
	119	if (translator) {
	120	qApp->removeTranslator(translator);
	121	delete translator;
	122	}
	123	translator = new QTranslator();
[29]	124	if (lang.compare("en") && !lang.startsWith("en_")) {
	125	// Trying to load system Qt library translation...
	126	if (qtTranslator->load("qt_" + lang,QLibraryInfo::location(QLibraryInfo::TranslationsPath)))
	127	qApp->installTranslator(qtTranslator);
	128	else
	129	// No luck. Let's try to load bundled one.
	130	if (qtTranslator->load("qt_" + lang,"i18n"))
	131	qApp->installTranslator(qtTranslator);
	132	else {
	133	delete qtTranslator;
	134	qtTranslator = NULL;
	135	}
[30]	136	// Now let's load application translation.
[29]	137	if (translator->load(lang,"i18n"))
	138	qApp->installTranslator(translator);
	139	else {
	140	if (!ad)
	141	QMessageBox(QMessageBox::Warning,trUtf8("Language change"),trUtf8("Unable to load translation language."),QMessageBox::Ok,this).exec();
	142	delete translator;
	143	translator = NULL;
	144	return false;
	145	}
	146	}
	147	return true;
	148	}
	149
[42]	150	void MainWindow::initDocStyleSheet()
	151	{
	152	QColor color = settings->value("Output/Color",DEF_FONT_COLOR).value<QColor>();
	153	QColor hilight;
	154	if (color.value() < 192)
	155	hilight.setHsv(color.hue(),color.saturation(),127 + qRound(color.value() / 2));
	156	else
	157	hilight.setHsv(color.hue(),color.saturation(),color.value() / 2);
	158	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;}");
	159	solutionText->document()->setDefaultFont(settings->value("Output/Font",QFont(DEF_FONT_FAMILY,DEF_FONT_SIZE)).value<QFont>());
	160	}
	161
[29]	162	void MainWindow::spinCitiesValueChanged(int n)
	163	{
[21]	164	#ifdef Q_OS_WINCE
	165	int count = tspmodel->numCities();
	166	#endif // Q_OS_WINCE
[15]	167	tspmodel->setNumCities(n);
[21]	168	#ifdef Q_OS_WINCE
	169	if (n > count)
	170	for (int k = count; k < n; k++) {
	171	taskView->resizeColumnToContents(k);
	172	taskView->resizeRowToContents(k);
	173	}
	174	#endif // Q_OS_WINCE
[1]	175	}
	176
[29]	177
	178	void MainWindow::actionFileNewTriggered()
[1]	179	{
[37]	180	if (isWindowModified()) {
	181	int res = QMessageBox(QMessageBox::Warning,trUtf8("New Task"),trUtf8("Would you like to save changes in current task?"),QMessageBox::Yes \| QMessageBox::No \| QMessageBox::Cancel,this).exec();
	182	if ((res == QMessageBox::Cancel) \|\| ((res == QMessageBox::Yes) && !saveTask()))
	183	return;
	184	}
[29]	185	tspmodel->clear();
[37]	186	setWindowModified(false);
[42]	187	tabWidget->setCurrentIndex(0);
	188	solutionText->clear();
	189	enableSolutionActions(false);
[29]	190	}
	191
[31]	192	void MainWindow::actionFileOpenTriggered()
	193	{
[37]	194	if (isWindowModified()) {
	195	int res = QMessageBox(QMessageBox::Warning,trUtf8("Task Open"),trUtf8("Would you like to save changes in current task?"),QMessageBox::Yes \| QMessageBox::No \| QMessageBox::Cancel,this).exec();
	196	if ((res == QMessageBox::Cancel) \|\| ((res == QMessageBox::Yes) && !saveTask()))
	197	return;
	198	}
[31]	199	QFileDialog od(this);
	200	od.setAcceptMode(QFileDialog::AcceptOpen);
	201	od.setFileMode(QFileDialog::ExistingFile);
	202	QStringList filters(trUtf8("All Supported Formats") + " (.tspt .zkt)");
	203	filters.append(QString(trUtf8("%1 Task Files")).arg("TSPSG") + " (*.tspt)");
	204	filters.append(QString(trUtf8("%1 Task Files")).arg("ZKomModRd") + " (*.zkt)");
	205	filters.append(trUtf8("All Files") + " (*)");
	206	od.setNameFilters(filters);
	207	if (od.exec() != QDialog::Accepted)
	208	return;
	209	QStringList files = od.selectedFiles();
	210	if (files.size() < 1)
	211	return;
	212	tspmodel->loadTask(files.first());
[37]	213	setWindowModified(false);
[42]	214	solutionText->clear();
	215	enableSolutionActions(false);
[31]	216	}
	217
[42]	218	void MainWindow::actionFileSaveAsTaskTriggered()
[31]	219	{
[37]	220	saveTask();
	221	}
	222
[42]	223	void MainWindow::actionFileSaveAsSolutionTriggered()
	224	{
	225	static QString selectedFile;
	226	if (selectedFile.isEmpty())
	227	selectedFile = "solution.html";
	228	QFileDialog sd(this);
	229	sd.setAcceptMode(QFileDialog::AcceptSave);
	230	QStringList filters(trUtf8("HTML Files") + " (.html .htm)");
	231	filters.append(trUtf8("OpenDocument Files") + " (*.odt)");
	232	filters.append(trUtf8("All Files") + " (*)");
	233	sd.setNameFilters(filters);
	234	sd.selectFile(selectedFile);
	235	if (sd.exec() != QDialog::Accepted)
	236	return;
	237	QStringList files = sd.selectedFiles();
	238	if (files.empty())
	239	return;
	240	selectedFile = files.first();
	241	QTextDocumentWriter dw(selectedFile);
	242	if (!(selectedFile.endsWith(".htm",Qt::CaseInsensitive) \|\| selectedFile.endsWith(".html",Qt::CaseInsensitive) \|\| selectedFile.endsWith(".odt",Qt::CaseInsensitive) \|\| selectedFile.endsWith(".txt",Qt::CaseInsensitive)))
	243	dw.setFormat("plaintext");
	244	dw.write(solutionText->document());
	245	}
	246
[37]	247	bool MainWindow::saveTask() {
[31]	248	QFileDialog sd(this);
	249	sd.setAcceptMode(QFileDialog::AcceptSave);
	250	QStringList filters(QString(trUtf8("%1 Task File")).arg("TSPSG") + " (*.tspt)");
	251	filters.append(trUtf8("All Files") + " (*)");
	252	sd.setNameFilters(filters);
	253	sd.setDefaultSuffix("tspt");
	254	if (sd.exec() != QDialog::Accepted)
[37]	255	return false;
[31]	256	QStringList files = sd.selectedFiles();
	257	if (files.size() < 1)
[37]	258	return false;
	259	if (tspmodel->saveTask(files.first())) {
	260	setWindowModified(false);
	261	return true;
	262	} else
	263	return false;
[31]	264	}
	265
[29]	266	void MainWindow::actionSettingsPreferencesTriggered()
	267	{
[1]	268	SettingsDialog sd(this);
[42]	269	if (sd.exec() != QDialog::Accepted)
	270	return;
	271	if (sd.colorChanged() \|\| sd.fontChanged()) {
	272	initDocStyleSheet();
	273	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)) {
	274	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
	275	solutionText->clear();
	276	solutionText->setHtml(output.join(""));
	277	QApplication::restoreOverrideCursor();
	278	}
	279	}
[1]	280	}
[6]	281
[17]	282	#ifndef Q_OS_WINCE
[29]	283	void MainWindow::actionFilePrintSetupTriggered()
[17]	284	{
[29]	285	QPrintDialog pd(printer,this);
[33]	286	#if QT_VERSION >= 0x040500
	287	// No such methods in Qt < 4.5
[29]	288	pd.setOption(QAbstractPrintDialog::PrintSelection,false);
	289	pd.setOption(QAbstractPrintDialog::PrintPageRange,false);
[33]	290	#endif
[17]	291	pd.exec();
	292	}
	293	#endif // Q_OS_WINCE
	294
[29]	295	void MainWindow::buttonRandomClicked()
[6]	296	{
[15]	297	tspmodel->randomize();
[37]	298	setWindowModified(true);
[21]	299	#ifdef Q_OS_WINCE
	300	taskView->resizeColumnsToContents();
	301	taskView->resizeRowsToContents();
	302	#endif // Q_OS_WINCE
[6]	303	}
	304
[42]	305	void MainWindow::outputMatrix(tMatrix matrix, QStringList &output, int nRow, int nCol)
	306	{
	307	int n = spinCities->value();
	308	QString line="";
	309	output.append("<table border=\"0\" cellspacing=\"0\" cellpadding=\"0\">");
	310	for (int r = 0; r < n; r++) {
	311	line = "<tr>";
	312	for (int c = 0; c < n; c++) {
	313	if (matrix[r][c] == INFINITY)
	314	line += "<td align=\"center\">"INFSTR"</td>";
	315	else if ((r == nRow) && (c == nCol))
	316	line += "<td align=\"center\" class=\"selected\">" + QVariant(matrix[r][c]).toString() + "</td>";
	317	else
	318	line += "<td align=\"center\">" + QVariant(matrix[r][c]).toString() + "</td>";
	319	}
	320	line += "</tr>";
	321	output.append(line);
	322	}
	323	output.append("</table>");
	324	}
	325
[29]	326	void MainWindow::buttonSolveClicked()
[6]	327	{
[13]	328	tMatrix matrix;
[42]	329	QList<double> row;
[15]	330	int n = spinCities->value();
[13]	331	bool ok;
[15]	332	for (int r = 0; r < n; r++) {
[42]	333	row.clear();
[15]	334	for (int c = 0; c < n; c++) {
[42]	335	row.append(tspmodel->index(r,c).data(Qt::UserRole).toDouble(&ok));
[15]	336	if (!ok) {
[27]	337	QMessageBox(QMessageBox::Critical,trUtf8("Data error"),QString(trUtf8("Error in cell [Row %1; Column %2]: Invalid data format.")).arg(r + 1).arg(c + 1),QMessageBox::Ok,this).exec();
[15]	338	return;
[13]	339	}
	340	}
	341	matrix.append(row);
	342	}
	343	CTSPSolver solver;
	344	sStep *root = solver.solve(spinCities->value(),matrix);
	345	if (!root)
[42]	346	return;
	347	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
	348	QColor color = settings->value("Output/Color",DEF_FONT_COLOR).value<QColor>();
	349	output.clear();
	350	output.append("<p>" + trUtf8("Variant #%1").arg(spinVariant->value()) + "</p>");
	351	output.append("<p>" + trUtf8("Task:") + "</p>");
	352	outputMatrix(matrix,output);
	353	output.append("<hr>");
	354	output.append("<p>" + trUtf8("Solution of Variant #%1 task").arg(spinVariant->value()) + "</p>");
	355	sStep *step = root;
	356	n = 1;
	357	QString path = "";
	358	while (n <= spinCities->value()) {
	359	if (step->prNode->prNode != NULL \|\| (step->prNode->prNode == NULL && step->plNode->prNode == NULL)) {
	360	if (n != spinCities->value()) {
	361	output.append("<p>" + trUtf8("Step #%1").arg(n++) + "</p>");
	362	outputMatrix(step->matrix,output,step->candidate.nRow,step->candidate.nCol);
	363	if (step->alts)
	364	output.append("<p class=\"hasalts\">" + trUtf8("This step has alternate candidates for branching.") + "</p>");
	365	output.append("<p> </p>");
	366	}
	367	path += QString(" (%1,%2)").arg(step->candidate.nRow + 1).arg(step->candidate.nCol + 1);
	368	}
	369	if (step->prNode->prNode != NULL)
	370	step = step->prNode;
	371	else if (step->plNode->prNode != NULL)
	372	step = step->plNode;
	373	else
	374	break;
	375	}
	376	output.append("<p>" + trUtf8("Optimal path:") + "</p>");
	377	output.append("<p>  " + path + "</p>");
	378	output.append("<p>" + trUtf8("The price is <b>%1</b> units.").arg(step->price) + "</p>");
	379	solutionText->setHtml(output.join(""));
	380	solutionText->setDocumentTitle(trUtf8("Solution of Variant #%1 task").arg(spinVariant->value()));
	381	enableSolutionActions();
	382	tabWidget->setCurrentIndex(1);
	383	QApplication::restoreOverrideCursor();
[6]	384	}
[21]	385
[29]	386	void MainWindow::actionHelpAboutTriggered()
[21]	387	{
	388	// TODO: Normal about window :-)
[30]	389	QString about = QString::fromUtf8("TSPSG - TSP Solver and Generator\n");
[42]	390	about += QString::fromUtf8(" Version: "BUILD_VERSION" ("BUILD_STATUS")\n");
	391	about += QString::fromUtf8(" Copyright (C) 2007-%1 Lёppa <contacts[at]oleksii[dot]name>\n").arg(QDate::currentDate().toString("yyyy"));
[37]	392	about += QString::fromUtf8("Target OS: %1\n").arg(OS);
	393	about += "Qt library:\n";
[30]	394	about += QString::fromUtf8(" Compile time: %1\n").arg(QT_VERSION_STR);
	395	about += QString::fromUtf8(" Runtime: %1\n").arg(qVersion());
[41]	396	about += QString::fromUtf8("Built on %1 at %2\n").arg(__DATE__).arg(__TIME__);
[30]	397	about += "\n";
	398	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]	399	QMessageBox(QMessageBox::Information,"About",about,QMessageBox::Ok,this).exec();
[21]	400	}
	401
[29]	402	void MainWindow::loadLangList()
	403	{
	404	QSettings langinfo("i18n/languages.ini",QSettings::IniFormat);
[33]	405	#if QT_VERSION >= 0x040500
	406	// In Qt < 4.5 QSettings doesn't have method setIniCodec.
[29]	407	langinfo.setIniCodec("UTF-8");
[33]	408	#endif
[29]	409	QDir dir("i18n","*.qm",QDir::Name \| QDir::IgnoreCase,QDir::Files);
	410	if (!dir.exists())
	411	return;
	412	QFileInfoList langs = dir.entryInfoList();
	413	if (langs.size() <= 0)
	414	return;
	415	QAction *a;
	416	for (int k = 0; k < langs.size(); k++) {
	417	QFileInfo lang = langs.at(k);
[30]	418	if (!lang.completeBaseName().startsWith("qt_") && lang.completeBaseName().compare("en")) {
[33]	419	#if QT_VERSION >= 0x040500
[29]	420	a = menuSettingsLanguage->addAction(langinfo.value(lang.completeBaseName() + "/NativeName",lang.completeBaseName()).toString());
[33]	421	#else
	422	// We use Name if Qt < 4.5 because NativeName is in UTF-8, QSettings
	423	// reads .ini file as ASCII and there is no way to set file encoding.
	424	a = menuSettingsLanguage->addAction(langinfo.value(lang.completeBaseName() + "/Name",lang.completeBaseName()).toString());
	425	#endif
[29]	426	a->setData(lang.completeBaseName());
	427	a->setCheckable(true);
	428	a->setActionGroup(groupSettingsLanguageList);
	429	if (settings->value("Language",QLocale::system().name()).toString().startsWith(lang.completeBaseName()))
	430	a->setChecked(true);
	431	}
	432	}
	433	}
	434
	435	void MainWindow::actionSettingsLanguageAutodetectTriggered(bool checked)
	436	{
	437	if (checked) {
	438	settings->remove("Language");
	439	QMessageBox(QMessageBox::Information,trUtf8("Language change"),trUtf8("Language will be autodetected on next application start."),QMessageBox::Ok,this).exec();
	440	} else
	441	settings->setValue("Language",groupSettingsLanguageList->checkedAction()->data().toString());
	442	}
	443
	444	void MainWindow::groupSettingsLanguageListTriggered(QAction *action)
	445	{
	446	if (actionSettingsLanguageAutodetect->isChecked()) {
	447	// We have language autodetection. It needs to be disabled to change language.
	448	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) {
	449	actionSettingsLanguageAutodetect->trigger();
	450	} else
	451	return;
	452	}
[30]	453	if (loadLanguage(action->data().toString())) {
[29]	454	settings->setValue("Language",action->data().toString());
	455	retranslateUi(this);
	456	}
	457	}
	458
[21]	459	void MainWindow::closeEvent(QCloseEvent *event)
	460	{
[37]	461	if (isWindowModified()) {
	462	int res = QMessageBox(QMessageBox::Warning,trUtf8("Application Close"),trUtf8("Would you like to save changes in current task?"),QMessageBox::Yes \| QMessageBox::No \| QMessageBox::Cancel,this).exec();
	463	if ((res == QMessageBox::Cancel) \|\| ((res == QMessageBox::Yes) && !saveTask())) {
	464	event->ignore();
	465	return;
	466	}
	467	}
[26]	468	settings->setValue("NumCities",spinCities->value());
	469	#ifndef Q_OS_WINCE
[21]	470	// Saving windows state
[23]	471	if (settings->value("SavePos",false).toBool()) {
	472	settings->beginGroup("MainWindow");
	473	settings->setValue("Maximized",isMaximized());
[21]	474	if (!isMaximized()) {
[23]	475	settings->setValue("Size",size());
	476	settings->setValue("Position",pos());
[21]	477	}
[23]	478	settings->endGroup();
[21]	479	}
[26]	480	#endif // Q_OS_WINCE
[21]	481	QMainWindow::closeEvent(event);
	482	}
[31]	483
[37]	484	void MainWindow::dataChanged()
	485	{
	486	setWindowModified(true);
	487	}
	488
[31]	489	void MainWindow::numCitiesChanged(int nCities)
	490	{
	491	spinCities->setValue(nCities);
	492	}

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