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source: tspsg-svn/trunk/src/mainwindow.cpp @ 66

Last change on this file since 66 was 65, checked in by laleppa, 15 years ago
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[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 65 2009-10-20 19:38:01Z 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
[65]	26	/*!
	27	* \brief Class constructor.
	28	* \param parent Main Window parent widget.
	29	*
	30	* Initializes Main Window and creates its layout based on target OS.
	31	* Loads TSPSG settings and opens a task file if it was specified as a commandline parameter.
	32	*/
[1]	33	MainWindow::MainWindow(QWidget *parent)
[21]	34	: QMainWindow(parent)
[1]	35	{
[29]	36	settings = new QSettings(QSettings::IniFormat,QSettings::UserScope,"TSPSG","tspsg");
	37	loadLanguage();
[1]	38	setupUi(this);
[54]	39	#ifndef Q_OS_WINCE
	40	QStatusBar *statusbar = new QStatusBar(this);
	41	statusbar->setObjectName("statusbar");
	42	setStatusBar(statusbar);
	43	#endif // Q_OS_WINCE
[42]	44	initDocStyleSheet();
	45	solutionText->document()->setDefaultFont(settings->value("Output/Font",QFont(DEF_FONT_FAMILY,DEF_FONT_SIZE)).value<QFont>());
	46	solutionText->setTextColor(settings->value("Output/Color",DEF_FONT_COLOR).value<QColor>());
	47	solutionText->setWordWrapMode(QTextOption::WordWrap);
[38]	48	#ifdef Q_OS_WINCE
	49	// A little hack for toolbar icons to have sane size.
	50	int s = qMin(QApplication::desktop()->screenGeometry().width(),QApplication::desktop()->screenGeometry().height());
	51	toolBar->setIconSize(QSize(s / 10,s / 10));
	52	#endif
[54]	53	#ifndef QT_NO_PRINTER
[52]	54	printer = new QPrinter(QPrinter::HighResolution);
[54]	55	#endif // QT_NO_PRINTER
[29]	56	groupSettingsLanguageList = new QActionGroup(this);
[30]	57	actionSettingsLanguageEnglish->setData("en");
	58	actionSettingsLanguageEnglish->setActionGroup(groupSettingsLanguageList);
[29]	59	loadLangList();
[50]	60	spinCities->setMaximum(MAX_NUM_CITIES);
[29]	61	actionSettingsLanguageAutodetect->setChecked(settings->value("Language","").toString().isEmpty());
	62	connect(actionFileNew,SIGNAL(triggered()),this,SLOT(actionFileNewTriggered()));
[31]	63	connect(actionFileOpen,SIGNAL(triggered()),this,SLOT(actionFileOpenTriggered()));
[50]	64	connect(actionFileSave,SIGNAL(triggered()),this,SLOT(actionFileSaveTriggered()));
[42]	65	connect(actionFileSaveAsTask,SIGNAL(triggered()),this,SLOT(actionFileSaveAsTaskTriggered()));
	66	connect(actionFileSaveAsSolution,SIGNAL(triggered()),this,SLOT(actionFileSaveAsSolutionTriggered()));
[29]	67	connect(actionSettingsPreferences,SIGNAL(triggered()),this,SLOT(actionSettingsPreferencesTriggered()));
	68	connect(actionSettingsLanguageAutodetect,SIGNAL(triggered(bool)),this,SLOT(actionSettingsLanguageAutodetectTriggered(bool)));
	69	connect(groupSettingsLanguageList,SIGNAL(triggered(QAction )),this,SLOT(groupSettingsLanguageListTriggered(QAction )));
[37]	70	connect(actionHelpAboutQt,SIGNAL(triggered()),qApp,SLOT(aboutQt()));
[29]	71	connect(actionHelpAbout,SIGNAL(triggered()),this,SLOT(actionHelpAboutTriggered()));
[54]	72	#ifndef QT_NO_PRINTER
	73	menuFile->insertAction(actionFileExit,actionFilePrintPreview);
	74	menuFile->insertAction(actionFileExit,actionFilePrint);
	75	menuFile->insertSeparator(actionFileExit);
	76	toolBar->insertAction(actionSettingsPreferences,actionFilePrint);
[52]	77	connect(actionFilePrintPreview,SIGNAL(triggered()),this,SLOT(actionFilePrintPreviewTriggered()));
	78	connect(actionFilePrint,SIGNAL(triggered()),this,SLOT(actionFilePrintTriggered()));
[54]	79	#endif // QT_NO_PRINTER
[29]	80	connect(buttonSolve,SIGNAL(clicked()),this,SLOT(buttonSolveClicked()));
	81	connect(buttonRandom,SIGNAL(clicked()),this,SLOT(buttonRandomClicked()));
[50]	82	connect(buttonBackToTask,SIGNAL(clicked()),this,SLOT(buttonBackToTaskClicked()));
[29]	83	connect(spinCities,SIGNAL(valueChanged(int)),this,SLOT(spinCitiesValueChanged(int)));
[50]	84	setCentralWidget(tabWidget);
[17]	85	QRect rect = geometry();
[42]	86	#ifndef Q_OS_WINCE
[23]	87	if (settings->value("SavePos",false).toBool()) {
[21]	88	// Loading of saved window state
[23]	89	settings->beginGroup("MainWindow");
	90	resize(settings->value("Size",size()).toSize());
	91	move(settings->value("Position",pos()).toPoint());
	92	if (settings->value("Maximized",false).toBool())
[21]	93	setWindowState(windowState() \| Qt::WindowMaximized);
[23]	94	settings->endGroup();
[21]	95	} else {
	96	// Centering main window
	97	rect.moveCenter(QApplication::desktop()->availableGeometry(this).center());
	98	setGeometry(rect);
	99	}
[17]	100	#endif // Q_OS_WINCE
[11]	101	qsrand(QDateTime().currentDateTime().toTime_t());
[15]	102	tspmodel = new CTSPModel();
[52]	103	taskView->setModel(tspmodel);
[31]	104	connect(tspmodel,SIGNAL(numCitiesChanged(int)),this,SLOT(numCitiesChanged(int)));
[57]	105	connect(tspmodel,SIGNAL(dataChanged(const QModelIndex &, const QModelIndex &)),this,SLOT(dataChanged(const QModelIndex &, const QModelIndex &)));
[37]	106	connect(tspmodel,SIGNAL(layoutChanged()),this,SLOT(dataChanged()));
[50]	107	if ((QCoreApplication::arguments().count() > 1) && (tspmodel->loadTask(QCoreApplication::arguments().at(1))))
[47]	108	setFileName(QCoreApplication::arguments().at(1));
[50]	109	else {
[47]	110	setFileName();
[50]	111	spinCities->setValue(settings->value("NumCities",DEF_NUM_CITIES).toInt());
[52]	112	spinCitiesValueChanged(spinCities->value());
[50]	113	}
	114	setWindowModified(false);
[6]	115	}
	116
[42]	117	void MainWindow::enableSolutionActions(bool enable)
	118	{
[50]	119	buttonSaveSolution->setEnabled(enable);
[42]	120	actionFileSaveAsSolution->setEnabled(enable);
	121	solutionText->setEnabled(enable);
	122	if (!enable)
	123	output.clear();
[54]	124	#ifndef QT_NO_PRINTER
[52]	125	actionFilePrint->setEnabled(enable);
	126	actionFilePrintPreview->setEnabled(enable);
[54]	127	#endif // QT_NO_PRINTER
[42]	128	}
	129
[30]	130	bool MainWindow::loadLanguage(QString lang)
[4]	131	{
[29]	132	// i18n
[30]	133	bool ad = false;
	134	if (lang.isEmpty()) {
	135	ad = settings->value("Language","").toString().isEmpty();
	136	lang = settings->value("Language",QLocale::system().name()).toString();
	137	}
[52]	138	static QTranslator *qtTranslator; // Qt library translator
[29]	139	if (qtTranslator) {
	140	qApp->removeTranslator(qtTranslator);
	141	delete qtTranslator;
	142	qtTranslator = NULL;
	143	}
	144	qtTranslator = new QTranslator();
[52]	145	static QTranslator *translator; // Application translator
[30]	146	if (translator) {
	147	qApp->removeTranslator(translator);
	148	delete translator;
	149	}
	150	translator = new QTranslator();
[29]	151	if (lang.compare("en") && !lang.startsWith("en_")) {
	152	// Trying to load system Qt library translation...
	153	if (qtTranslator->load("qt_" + lang,QLibraryInfo::location(QLibraryInfo::TranslationsPath)))
	154	qApp->installTranslator(qtTranslator);
	155	else
	156	// No luck. Let's try to load bundled one.
[57]	157	if (qtTranslator->load("qt_" + lang,PATH_I18N))
[29]	158	qApp->installTranslator(qtTranslator);
	159	else {
[52]	160	// Qt library translation unavailable
[29]	161	delete qtTranslator;
	162	qtTranslator = NULL;
	163	}
[30]	164	// Now let's load application translation.
[57]	165	if (translator->load(lang,PATH_I18N))
[29]	166	qApp->installTranslator(translator);
	167	else {
	168	if (!ad)
[52]	169	QMessageBox(QMessageBox::Warning,trUtf8("Language Change"),trUtf8("Unable to load translation language."),QMessageBox::Ok,this).exec();
[29]	170	delete translator;
	171	translator = NULL;
	172	return false;
	173	}
	174	}
	175	return true;
	176	}
	177
[42]	178	void MainWindow::initDocStyleSheet()
	179	{
	180	QColor color = settings->value("Output/Color",DEF_FONT_COLOR).value<QColor>();
	181	QColor hilight;
	182	if (color.value() < 192)
	183	hilight.setHsv(color.hue(),color.saturation(),127 + qRound(color.value() / 2));
	184	else
	185	hilight.setHsv(color.hue(),color.saturation(),color.value() / 2);
	186	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;}");
	187	solutionText->document()->setDefaultFont(settings->value("Output/Font",QFont(DEF_FONT_FAMILY,DEF_FONT_SIZE)).value<QFont>());
	188	}
	189
[47]	190	void MainWindow::setFileName(QString fileName)
	191	{
	192	this->fileName = fileName;
	193	setWindowTitle(QString("%1[*] - %2").arg(QFileInfo(fileName).completeBaseName()).arg(trUtf8("Travelling Salesman Problem")));
	194	}
	195
[29]	196	void MainWindow::spinCitiesValueChanged(int n)
	197	{
[21]	198	int count = tspmodel->numCities();
[15]	199	tspmodel->setNumCities(n);
[57]	200	if ((n > count) && settings->value("Autosize",true).toBool())
[21]	201	for (int k = count; k < n; k++) {
	202	taskView->resizeColumnToContents(k);
	203	taskView->resizeRowToContents(k);
	204	}
[1]	205	}
	206
[47]	207	bool MainWindow::maybeSave()
	208	{
	209	if (!isWindowModified())
	210	return true;
	211	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();
	212	if (res == QMessageBox::Save)
	213	return saveTask();
	214	else if (res == QMessageBox::Cancel)
	215	return false;
	216	else
	217	return true;
	218	}
[29]	219
	220	void MainWindow::actionFileNewTriggered()
[1]	221	{
[47]	222	if (!maybeSave())
	223	return;
[54]	224	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
[29]	225	tspmodel->clear();
[47]	226	setFileName();
[37]	227	setWindowModified(false);
[42]	228	tabWidget->setCurrentIndex(0);
	229	solutionText->clear();
	230	enableSolutionActions(false);
[54]	231	QApplication::restoreOverrideCursor();
[29]	232	}
	233
[31]	234	void MainWindow::actionFileOpenTriggered()
	235	{
[47]	236	if (!maybeSave())
	237	return;
[31]	238	QFileDialog od(this);
	239	od.setAcceptMode(QFileDialog::AcceptOpen);
	240	od.setFileMode(QFileDialog::ExistingFile);
	241	QStringList filters(trUtf8("All Supported Formats") + " (.tspt .zkt)");
[47]	242	filters.append(trUtf8("%1 Task Files").arg("TSPSG") + " (*.tspt)");
	243	filters.append(trUtf8("%1 Task Files").arg("ZKomModRd") + " (*.zkt)");
[31]	244	filters.append(trUtf8("All Files") + " (*)");
	245	od.setNameFilters(filters);
	246	if (od.exec() != QDialog::Accepted)
	247	return;
	248	QStringList files = od.selectedFiles();
[47]	249	if (files.empty())
[31]	250	return;
[59]	251	if (!tspmodel->loadTask(files.first()))
[47]	252	return;
	253	setFileName(files.first());
	254	tabWidget->setCurrentIndex(0);
[37]	255	setWindowModified(false);
[42]	256	solutionText->clear();
	257	enableSolutionActions(false);
[31]	258	}
	259
[50]	260	void MainWindow::actionFileSaveTriggered()
	261	{
	262	if ((fileName == trUtf8("Untitled") + ".tspt") \|\| (!fileName.endsWith(".tspt",Qt::CaseInsensitive)))
	263	saveTask();
[59]	264	else
[50]	265	if (tspmodel->saveTask(fileName))
	266	setWindowModified(false);
	267	}
	268
[42]	269	void MainWindow::actionFileSaveAsTaskTriggered()
[31]	270	{
[37]	271	saveTask();
	272	}
	273
[42]	274	void MainWindow::actionFileSaveAsSolutionTriggered()
	275	{
	276	static QString selectedFile;
	277	if (selectedFile.isEmpty())
[55]	278	#ifndef QT_NO_PRINTER
	279	selectedFile = "solution.pdf";
	280	#else
[42]	281	selectedFile = "solution.html";
[55]	282	#endif // QT_NO_PRINTER
[42]	283	QFileDialog sd(this);
	284	sd.setAcceptMode(QFileDialog::AcceptSave);
[55]	285	QStringList filters;
	286	#ifndef QT_NO_PRINTER
	287	filters.append(trUtf8("PDF Files") + "(*.pdf)");
	288	#endif
	289	filters.append(trUtf8("HTML Files") + " (.html .htm)");
[45]	290	#if QT_VERSION >= 0x040500
[42]	291	filters.append(trUtf8("OpenDocument Files") + " (*.odt)");
[45]	292	#endif // QT_VERSION >= 0x040500
[42]	293	filters.append(trUtf8("All Files") + " (*)");
	294	sd.setNameFilters(filters);
	295	sd.selectFile(selectedFile);
	296	if (sd.exec() != QDialog::Accepted)
	297	return;
	298	QStringList files = sd.selectedFiles();
	299	if (files.empty())
	300	return;
	301	selectedFile = files.first();
[51]	302	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
[55]	303	#ifndef QT_NO_PRINTER
	304	if (selectedFile.endsWith(".pdf",Qt::CaseInsensitive)) {
	305	QPrinter printer(QPrinter::HighResolution);
	306	printer.setOutputFormat(QPrinter::PdfFormat);
	307	printer.setOutputFileName(selectedFile);
	308	solutionText->document()->print(&printer);
	309	QApplication::restoreOverrideCursor();
	310	return;
	311	}
	312	#endif
[45]	313	#if QT_VERSION >= 0x040500
[42]	314	QTextDocumentWriter dw(selectedFile);
	315	if (!(selectedFile.endsWith(".htm",Qt::CaseInsensitive) \|\| selectedFile.endsWith(".html",Qt::CaseInsensitive) \|\| selectedFile.endsWith(".odt",Qt::CaseInsensitive) \|\| selectedFile.endsWith(".txt",Qt::CaseInsensitive)))
	316	dw.setFormat("plaintext");
	317	dw.write(solutionText->document());
[45]	318	#else
	319	// Qt < 4.5 has no QTextDocumentWriter class
	320	QFile file(selectedFile);
[51]	321	if (!file.open(QFile::WriteOnly)) {
	322	QApplication::restoreOverrideCursor();
[45]	323	return;
[51]	324	}
[45]	325	QTextStream ts(&file);
	326	ts.setCodec(QTextCodec::codecForName("UTF-8"));
	327	ts << solutionText->document()->toHtml("UTF-8");
[51]	328	file.close();
[45]	329	#endif // QT_VERSION >= 0x040500
[51]	330	QApplication::restoreOverrideCursor();
[42]	331	}
	332
[37]	333	bool MainWindow::saveTask() {
[31]	334	QFileDialog sd(this);
	335	sd.setAcceptMode(QFileDialog::AcceptSave);
[47]	336	QStringList filters(trUtf8("%1 Task File").arg("TSPSG") + " (*.tspt)");
[31]	337	filters.append(trUtf8("All Files") + " (*)");
	338	sd.setNameFilters(filters);
	339	sd.setDefaultSuffix("tspt");
[47]	340	if (fileName.endsWith(".tspt",Qt::CaseInsensitive))
	341	sd.selectFile(fileName);
	342	else
	343	sd.selectFile(QFileInfo(fileName).canonicalPath() + "/" + QFileInfo(fileName).completeBaseName() + ".tspt");
[31]	344	if (sd.exec() != QDialog::Accepted)
[37]	345	return false;
[31]	346	QStringList files = sd.selectedFiles();
[47]	347	if (files.empty())
[37]	348	return false;
	349	if (tspmodel->saveTask(files.first())) {
[47]	350	setFileName(files.first());
[37]	351	setWindowModified(false);
	352	return true;
[47]	353	}
	354	return false;
[31]	355	}
	356
[29]	357	void MainWindow::actionSettingsPreferencesTriggered()
	358	{
[1]	359	SettingsDialog sd(this);
[42]	360	if (sd.exec() != QDialog::Accepted)
	361	return;
	362	if (sd.colorChanged() \|\| sd.fontChanged()) {
	363	initDocStyleSheet();
	364	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)) {
	365	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
	366	solutionText->clear();
	367	solutionText->setHtml(output.join(""));
	368	QApplication::restoreOverrideCursor();
	369	}
	370	}
[1]	371	}
[6]	372
[54]	373	#ifndef QT_NO_PRINTER
[52]	374	void MainWindow::printPreview(QPrinter *printer)
[17]	375	{
[52]	376	solutionText->print(printer);
	377	}
	378
	379	void MainWindow::actionFilePrintPreviewTriggered()
	380	{
	381	QPrintPreviewDialog ppd(printer, this);
	382	connect(&ppd,SIGNAL(paintRequested(QPrinter )),SLOT(printPreview(QPrinter )));
	383	ppd.exec();
	384	}
	385
	386	void MainWindow::actionFilePrintTriggered()
	387	{
[29]	388	QPrintDialog pd(printer,this);
[33]	389	#if QT_VERSION >= 0x040500
	390	// No such methods in Qt < 4.5
[29]	391	pd.setOption(QAbstractPrintDialog::PrintSelection,false);
	392	pd.setOption(QAbstractPrintDialog::PrintPageRange,false);
[33]	393	#endif
[52]	394	if (pd.exec() != QDialog::Accepted)
	395	return;
[54]	396	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
[52]	397	solutionText->document()->print(printer);
[54]	398	QApplication::restoreOverrideCursor();
[17]	399	}
[54]	400	#endif // QT_NO_PRINTER
[17]	401
[29]	402	void MainWindow::buttonRandomClicked()
[6]	403	{
[54]	404	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
[15]	405	tspmodel->randomize();
[54]	406	QApplication::restoreOverrideCursor();
[6]	407	}
	408
[50]	409	void MainWindow::buttonBackToTaskClicked()
	410	{
	411	tabWidget->setCurrentIndex(0);
	412	}
	413
[42]	414	void MainWindow::outputMatrix(tMatrix matrix, QStringList &output, int nRow, int nCol)
	415	{
	416	int n = spinCities->value();
	417	QString line="";
	418	output.append("<table border=\"0\" cellspacing=\"0\" cellpadding=\"0\">");
	419	for (int r = 0; r < n; r++) {
	420	line = "<tr>";
	421	for (int c = 0; c < n; c++) {
	422	if (matrix[r][c] == INFINITY)
	423	line += "<td align=\"center\">"INFSTR"</td>";
	424	else if ((r == nRow) && (c == nCol))
	425	line += "<td align=\"center\" class=\"selected\">" + QVariant(matrix[r][c]).toString() + "</td>";
	426	else
	427	line += "<td align=\"center\">" + QVariant(matrix[r][c]).toString() + "</td>";
	428	}
	429	line += "</tr>";
	430	output.append(line);
	431	}
	432	output.append("</table>");
	433	}
	434
[29]	435	void MainWindow::buttonSolveClicked()
[6]	436	{
[13]	437	tMatrix matrix;
[42]	438	QList<double> row;
[15]	439	int n = spinCities->value();
[13]	440	bool ok;
[15]	441	for (int r = 0; r < n; r++) {
[42]	442	row.clear();
[15]	443	for (int c = 0; c < n; c++) {
[42]	444	row.append(tspmodel->index(r,c).data(Qt::UserRole).toDouble(&ok));
[15]	445	if (!ok) {
[47]	446	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]	447	return;
[13]	448	}
	449	}
	450	matrix.append(row);
	451	}
	452	CTSPSolver solver;
[50]	453	sStep *root = solver.solve(n,matrix,this);
[13]	454	if (!root)
[42]	455	return;
	456	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
	457	QColor color = settings->value("Output/Color",DEF_FONT_COLOR).value<QColor>();
	458	output.clear();
	459	output.append("<p>" + trUtf8("Variant #%1").arg(spinVariant->value()) + "</p>");
	460	output.append("<p>" + trUtf8("Task:") + "</p>");
	461	outputMatrix(matrix,output);
	462	output.append("<hr>");
	463	output.append("<p>" + trUtf8("Solution of Variant #%1 task").arg(spinVariant->value()) + "</p>");
	464	sStep *step = root;
	465	n = 1;
	466	while (n <= spinCities->value()) {
	467	if (step->prNode->prNode != NULL \|\| (step->prNode->prNode == NULL && step->plNode->prNode == NULL)) {
	468	if (n != spinCities->value()) {
	469	output.append("<p>" + trUtf8("Step #%1").arg(n++) + "</p>");
	470	outputMatrix(step->matrix,output,step->candidate.nRow,step->candidate.nCol);
	471	if (step->alts)
	472	output.append("<p class=\"hasalts\">" + trUtf8("This step has alternate candidates for branching.") + "</p>");
	473	output.append("<p> </p>");
	474	}
	475	}
	476	if (step->prNode->prNode != NULL)
	477	step = step->prNode;
	478	else if (step->plNode->prNode != NULL)
	479	step = step->plNode;
	480	else
	481	break;
	482	}
[60]	483	if (solver.isOptimal())
	484	output.append("<p>" + trUtf8("Optimal path:") + "</p>");
	485	else
	486	output.append("<p>" + trUtf8("Resulting path:") + "</p>");
	487	output.append("<p>  " + solver.getSortedPath() + "</p>");
[42]	488	output.append("<p>" + trUtf8("The price is <b>%1</b> units.").arg(step->price) + "</p>");
[60]	489	if (!solver.isOptimal()) {
	490	output.append("<p> </p>");
	491	output.append("<p>" + trUtf8("<b>WARNING!!!</b><br>This result is a record, but it may not be optimal.<br>Iterations need to be continued to check whether this result is optimal or get an optimal one.") + "</p>");
	492	}
[65]	493	output.append("<p></p>");
[42]	494	solutionText->setHtml(output.join(""));
	495	solutionText->setDocumentTitle(trUtf8("Solution of Variant #%1 task").arg(spinVariant->value()));
[65]	496
	497	// Scrolling to the end of text.
	498	QTextCursor cursor(solutionText->textCursor());
	499	cursor.movePosition(QTextCursor::End, QTextCursor::MoveAnchor);
	500	solutionText->setTextCursor(cursor);
	501
[42]	502	enableSolutionActions();
	503	tabWidget->setCurrentIndex(1);
	504	QApplication::restoreOverrideCursor();
[6]	505	}
[21]	506
[29]	507	void MainWindow::actionHelpAboutTriggered()
[21]	508	{
[65]	509	//! \todo TODO: Normal about window :-)
[55]	510	QString about = QString::fromUtf8("TSPSG: TSP Solver and Generator\n");
[45]	511	about += QString::fromUtf8(" Version: "BUILD_VERSION"\n");
[42]	512	about += QString::fromUtf8(" Copyright (C) 2007-%1 Lёppa <contacts[at]oleksii[dot]name>\n").arg(QDate::currentDate().toString("yyyy"));
[37]	513	about += QString::fromUtf8("Target OS: %1\n").arg(OS);
	514	about += "Qt library:\n";
[30]	515	about += QString::fromUtf8(" Compile time: %1\n").arg(QT_VERSION_STR);
	516	about += QString::fromUtf8(" Runtime: %1\n").arg(qVersion());
[41]	517	about += QString::fromUtf8("Built on %1 at %2\n").arg(__DATE__).arg(__TIME__);
[63]	518	about += QString::fromUtf8(VERSIONID"\n\n");
	519	about += QString::fromUtf8("Algorithm: %1\n").arg(CTSPSolver::getVersionId());
[30]	520	about += "\n";
	521	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]	522	QMessageBox(QMessageBox::Information,"About",about,QMessageBox::Ok,this).exec();
[21]	523	}
	524
[29]	525	void MainWindow::loadLangList()
	526	{
[57]	527	QSettings langinfo(PATH_I18N"/languages.ini",QSettings::IniFormat);
[33]	528	#if QT_VERSION >= 0x040500
	529	// In Qt < 4.5 QSettings doesn't have method setIniCodec.
[29]	530	langinfo.setIniCodec("UTF-8");
[33]	531	#endif
[57]	532	QDir dir(PATH_I18N,"*.qm",QDir::Name \| QDir::IgnoreCase,QDir::Files);
[29]	533	if (!dir.exists())
	534	return;
	535	QFileInfoList langs = dir.entryInfoList();
	536	if (langs.size() <= 0)
	537	return;
	538	QAction *a;
	539	for (int k = 0; k < langs.size(); k++) {
	540	QFileInfo lang = langs.at(k);
[30]	541	if (!lang.completeBaseName().startsWith("qt_") && lang.completeBaseName().compare("en")) {
[33]	542	#if QT_VERSION >= 0x040500
[29]	543	a = menuSettingsLanguage->addAction(langinfo.value(lang.completeBaseName() + "/NativeName",lang.completeBaseName()).toString());
[33]	544	#else
	545	// We use Name if Qt < 4.5 because NativeName is in UTF-8, QSettings
	546	// reads .ini file as ASCII and there is no way to set file encoding.
	547	a = menuSettingsLanguage->addAction(langinfo.value(lang.completeBaseName() + "/Name",lang.completeBaseName()).toString());
	548	#endif
[29]	549	a->setData(lang.completeBaseName());
	550	a->setCheckable(true);
	551	a->setActionGroup(groupSettingsLanguageList);
	552	if (settings->value("Language",QLocale::system().name()).toString().startsWith(lang.completeBaseName()))
	553	a->setChecked(true);
	554	}
	555	}
	556	}
	557
	558	void MainWindow::actionSettingsLanguageAutodetectTriggered(bool checked)
	559	{
	560	if (checked) {
	561	settings->remove("Language");
	562	QMessageBox(QMessageBox::Information,trUtf8("Language change"),trUtf8("Language will be autodetected on next application start."),QMessageBox::Ok,this).exec();
	563	} else
	564	settings->setValue("Language",groupSettingsLanguageList->checkedAction()->data().toString());
	565	}
	566
	567	void MainWindow::groupSettingsLanguageListTriggered(QAction *action)
	568	{
	569	if (actionSettingsLanguageAutodetect->isChecked()) {
	570	// We have language autodetection. It needs to be disabled to change language.
	571	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) {
	572	actionSettingsLanguageAutodetect->trigger();
	573	} else
	574	return;
	575	}
[47]	576	bool untitled = (fileName == trUtf8("Untitled") + ".tspt");
[30]	577	if (loadLanguage(action->data().toString())) {
[29]	578	settings->setValue("Language",action->data().toString());
	579	retranslateUi(this);
[47]	580	if (untitled)
	581	setFileName();
[29]	582	}
	583	}
	584
[65]	585	/*!
	586	* \brief Handles Main Window close event.
	587	* \param event Close event.
	588	*
	589	* Checks whether or not a current task was saved and asks for saving if not.
	590	* Saves TSPSG settings.
	591	*/
[21]	592	void MainWindow::closeEvent(QCloseEvent *event)
	593	{
[47]	594	if (!maybeSave()) {
	595	event->ignore();
	596	return;
[37]	597	}
[26]	598	settings->setValue("NumCities",spinCities->value());
	599	#ifndef Q_OS_WINCE
[21]	600	// Saving windows state
[23]	601	if (settings->value("SavePos",false).toBool()) {
	602	settings->beginGroup("MainWindow");
	603	settings->setValue("Maximized",isMaximized());
[21]	604	if (!isMaximized()) {
[23]	605	settings->setValue("Size",size());
	606	settings->setValue("Position",pos());
[21]	607	}
[23]	608	settings->endGroup();
[21]	609	}
[26]	610	#endif // Q_OS_WINCE
[21]	611	QMainWindow::closeEvent(event);
	612	}
[31]	613
[37]	614	void MainWindow::dataChanged()
	615	{
	616	setWindowModified(true);
	617	}
	618
[57]	619	void MainWindow::dataChanged(const QModelIndex &tl, const QModelIndex &br)
	620	{
	621	setWindowModified(true);
	622	if (settings->value("Autosize",true).toBool()) {
	623	for (int k = tl.row(); k <= br.row(); k++)
	624	taskView->resizeRowToContents(k);
	625	for (int k = tl.column(); k <= br.column(); k++)
	626	taskView->resizeColumnToContents(k);
	627	}
	628	}
	629
[31]	630	void MainWindow::numCitiesChanged(int nCities)
	631	{
[50]	632	blockSignals(true);
[31]	633	spinCities->setValue(nCities);
[50]	634	blockSignals(false);
[31]	635	}

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