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source: tspsg-svn/trunk/src/mainwindow.cpp @ 54

Last change on this file since 54 was 54, checked in by laleppa, 15 years ago
mainwindow.ui and mainwindow.ce.ui had differences only in printing actions and statusbar, so I merged them into one. Differences are now applied in source code. This will simplify Main Window maintenance. Changed #ifndef Q_OS_WINCE to #ifndef QT_NO_PRINTER where relevant. Now using method at() instead of operator [] in solving algorithm. This change dramatically decreased solution time (from 13 seconds to 10-40 milliseconds for 20 cities on my PC). Increased maximum number of cities to 30. Setting more makes no sense at this moment, because generated solution output is big and inserting it to QTextEdit takes veeeeery long time. Translations were updated.
Property svn:keywords set to `Id URL`
File size: 21.6 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 54 2009-08-08 23:45:19Z 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);
[54]	32	#ifndef Q_OS_WINCE
	33	QStatusBar *statusbar = new QStatusBar(this);
	34	statusbar->setObjectName("statusbar");
	35	setStatusBar(statusbar);
	36	#endif // Q_OS_WINCE
[42]	37	initDocStyleSheet();
	38	solutionText->document()->setDefaultFont(settings->value("Output/Font",QFont(DEF_FONT_FAMILY,DEF_FONT_SIZE)).value<QFont>());
	39	solutionText->setTextColor(settings->value("Output/Color",DEF_FONT_COLOR).value<QColor>());
	40	solutionText->setWordWrapMode(QTextOption::WordWrap);
[38]	41	#ifdef Q_OS_WINCE
	42	// A little hack for toolbar icons to have sane size.
	43	int s = qMin(QApplication::desktop()->screenGeometry().width(),QApplication::desktop()->screenGeometry().height());
	44	toolBar->setIconSize(QSize(s / 10,s / 10));
	45	#endif
[54]	46	#ifndef QT_NO_PRINTER
[52]	47	printer = new QPrinter(QPrinter::HighResolution);
[54]	48	#endif // QT_NO_PRINTER
[29]	49	groupSettingsLanguageList = new QActionGroup(this);
[30]	50	actionSettingsLanguageEnglish->setData("en");
	51	actionSettingsLanguageEnglish->setActionGroup(groupSettingsLanguageList);
[29]	52	loadLangList();
[50]	53	spinCities->setMaximum(MAX_NUM_CITIES);
[29]	54	actionSettingsLanguageAutodetect->setChecked(settings->value("Language","").toString().isEmpty());
	55	connect(actionFileNew,SIGNAL(triggered()),this,SLOT(actionFileNewTriggered()));
[31]	56	connect(actionFileOpen,SIGNAL(triggered()),this,SLOT(actionFileOpenTriggered()));
[50]	57	connect(actionFileSave,SIGNAL(triggered()),this,SLOT(actionFileSaveTriggered()));
[42]	58	connect(actionFileSaveAsTask,SIGNAL(triggered()),this,SLOT(actionFileSaveAsTaskTriggered()));
	59	connect(actionFileSaveAsSolution,SIGNAL(triggered()),this,SLOT(actionFileSaveAsSolutionTriggered()));
[29]	60	connect(actionSettingsPreferences,SIGNAL(triggered()),this,SLOT(actionSettingsPreferencesTriggered()));
	61	connect(actionSettingsLanguageAutodetect,SIGNAL(triggered(bool)),this,SLOT(actionSettingsLanguageAutodetectTriggered(bool)));
	62	connect(groupSettingsLanguageList,SIGNAL(triggered(QAction )),this,SLOT(groupSettingsLanguageListTriggered(QAction )));
[37]	63	connect(actionHelpAboutQt,SIGNAL(triggered()),qApp,SLOT(aboutQt()));
[29]	64	connect(actionHelpAbout,SIGNAL(triggered()),this,SLOT(actionHelpAboutTriggered()));
[54]	65	#ifndef QT_NO_PRINTER
	66	menuFile->insertAction(actionFileExit,actionFilePrintPreview);
	67	menuFile->insertAction(actionFileExit,actionFilePrint);
	68	menuFile->insertSeparator(actionFileExit);
	69	toolBar->insertAction(actionSettingsPreferences,actionFilePrint);
[52]	70	connect(actionFilePrintPreview,SIGNAL(triggered()),this,SLOT(actionFilePrintPreviewTriggered()));
	71	connect(actionFilePrint,SIGNAL(triggered()),this,SLOT(actionFilePrintTriggered()));
[54]	72	#endif // QT_NO_PRINTER
[29]	73	connect(buttonSolve,SIGNAL(clicked()),this,SLOT(buttonSolveClicked()));
	74	connect(buttonRandom,SIGNAL(clicked()),this,SLOT(buttonRandomClicked()));
[50]	75	connect(buttonBackToTask,SIGNAL(clicked()),this,SLOT(buttonBackToTaskClicked()));
[29]	76	connect(spinCities,SIGNAL(valueChanged(int)),this,SLOT(spinCitiesValueChanged(int)));
[50]	77	setCentralWidget(tabWidget);
[17]	78	QRect rect = geometry();
[42]	79	#ifndef Q_OS_WINCE
[23]	80	if (settings->value("SavePos",false).toBool()) {
[21]	81	// Loading of saved window state
[23]	82	settings->beginGroup("MainWindow");
	83	resize(settings->value("Size",size()).toSize());
	84	move(settings->value("Position",pos()).toPoint());
	85	if (settings->value("Maximized",false).toBool())
[21]	86	setWindowState(windowState() \| Qt::WindowMaximized);
[23]	87	settings->endGroup();
[21]	88	} else {
	89	// Centering main window
	90	rect.moveCenter(QApplication::desktop()->availableGeometry(this).center());
	91	setGeometry(rect);
	92	}
[17]	93	#endif // Q_OS_WINCE
[11]	94	qsrand(QDateTime().currentDateTime().toTime_t());
[15]	95	tspmodel = new CTSPModel();
[52]	96	taskView->setModel(tspmodel);
[31]	97	connect(tspmodel,SIGNAL(numCitiesChanged(int)),this,SLOT(numCitiesChanged(int)));
[37]	98	connect(tspmodel,SIGNAL(dataChanged(const QModelIndex &, const QModelIndex &)),this,SLOT(dataChanged()));
	99	connect(tspmodel,SIGNAL(layoutChanged()),this,SLOT(dataChanged()));
[50]	100	if ((QCoreApplication::arguments().count() > 1) && (tspmodel->loadTask(QCoreApplication::arguments().at(1))))
[47]	101	setFileName(QCoreApplication::arguments().at(1));
[50]	102	else {
[47]	103	setFileName();
[50]	104	spinCities->setValue(settings->value("NumCities",DEF_NUM_CITIES).toInt());
[52]	105	spinCitiesValueChanged(spinCities->value());
[50]	106	}
	107	setWindowModified(false);
[6]	108	}
	109
[42]	110	void MainWindow::enableSolutionActions(bool enable)
	111	{
[50]	112	buttonSaveSolution->setEnabled(enable);
[42]	113	actionFileSaveAsSolution->setEnabled(enable);
	114	solutionText->setEnabled(enable);
	115	if (!enable)
	116	output.clear();
[54]	117	#ifndef QT_NO_PRINTER
[52]	118	actionFilePrint->setEnabled(enable);
	119	actionFilePrintPreview->setEnabled(enable);
[54]	120	#endif // QT_NO_PRINTER
[42]	121	}
	122
[30]	123	bool MainWindow::loadLanguage(QString lang)
[4]	124	{
[29]	125	// i18n
[30]	126	bool ad = false;
	127	if (lang.isEmpty()) {
	128	ad = settings->value("Language","").toString().isEmpty();
	129	lang = settings->value("Language",QLocale::system().name()).toString();
	130	}
[52]	131	static QTranslator *qtTranslator; // Qt library translator
[29]	132	if (qtTranslator) {
	133	qApp->removeTranslator(qtTranslator);
	134	delete qtTranslator;
	135	qtTranslator = NULL;
	136	}
	137	qtTranslator = new QTranslator();
[52]	138	static QTranslator *translator; // Application translator
[30]	139	if (translator) {
	140	qApp->removeTranslator(translator);
	141	delete translator;
	142	}
	143	translator = new QTranslator();
[29]	144	if (lang.compare("en") && !lang.startsWith("en_")) {
	145	// Trying to load system Qt library translation...
	146	if (qtTranslator->load("qt_" + lang,QLibraryInfo::location(QLibraryInfo::TranslationsPath)))
	147	qApp->installTranslator(qtTranslator);
	148	else
	149	// No luck. Let's try to load bundled one.
	150	if (qtTranslator->load("qt_" + lang,"i18n"))
	151	qApp->installTranslator(qtTranslator);
	152	else {
[52]	153	// Qt library translation unavailable
[29]	154	delete qtTranslator;
	155	qtTranslator = NULL;
	156	}
[30]	157	// Now let's load application translation.
[29]	158	if (translator->load(lang,"i18n"))
	159	qApp->installTranslator(translator);
	160	else {
	161	if (!ad)
[52]	162	QMessageBox(QMessageBox::Warning,trUtf8("Language Change"),trUtf8("Unable to load translation language."),QMessageBox::Ok,this).exec();
[29]	163	delete translator;
	164	translator = NULL;
	165	return false;
	166	}
	167	}
	168	return true;
	169	}
	170
[42]	171	void MainWindow::initDocStyleSheet()
	172	{
	173	QColor color = settings->value("Output/Color",DEF_FONT_COLOR).value<QColor>();
	174	QColor hilight;
	175	if (color.value() < 192)
	176	hilight.setHsv(color.hue(),color.saturation(),127 + qRound(color.value() / 2));
	177	else
	178	hilight.setHsv(color.hue(),color.saturation(),color.value() / 2);
	179	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;}");
	180	solutionText->document()->setDefaultFont(settings->value("Output/Font",QFont(DEF_FONT_FAMILY,DEF_FONT_SIZE)).value<QFont>());
	181	}
	182
[47]	183	void MainWindow::setFileName(QString fileName)
	184	{
	185	this->fileName = fileName;
	186	setWindowTitle(QString("%1[*] - %2").arg(QFileInfo(fileName).completeBaseName()).arg(trUtf8("Travelling Salesman Problem")));
	187	}
	188
[29]	189	void MainWindow::spinCitiesValueChanged(int n)
	190	{
[21]	191	int count = tspmodel->numCities();
[15]	192	tspmodel->setNumCities(n);
[21]	193	if (n > count)
	194	for (int k = count; k < n; k++) {
	195	taskView->resizeColumnToContents(k);
	196	taskView->resizeRowToContents(k);
	197	}
[1]	198	}
	199
[47]	200	bool MainWindow::maybeSave()
	201	{
	202	if (!isWindowModified())
	203	return true;
	204	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();
	205	if (res == QMessageBox::Save)
	206	return saveTask();
	207	else if (res == QMessageBox::Cancel)
	208	return false;
	209	else
	210	return true;
	211	}
[29]	212
	213	void MainWindow::actionFileNewTriggered()
[1]	214	{
[47]	215	if (!maybeSave())
	216	return;
[54]	217	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
[29]	218	tspmodel->clear();
[47]	219	taskView->resizeColumnsToContents();
	220	taskView->resizeRowsToContents();
	221	setFileName();
[37]	222	setWindowModified(false);
[42]	223	tabWidget->setCurrentIndex(0);
	224	solutionText->clear();
	225	enableSolutionActions(false);
[54]	226	QApplication::restoreOverrideCursor();
[29]	227	}
	228
[31]	229	void MainWindow::actionFileOpenTriggered()
	230	{
[47]	231	if (!maybeSave())
	232	return;
[31]	233	QFileDialog od(this);
	234	od.setAcceptMode(QFileDialog::AcceptOpen);
	235	od.setFileMode(QFileDialog::ExistingFile);
	236	QStringList filters(trUtf8("All Supported Formats") + " (.tspt .zkt)");
[47]	237	filters.append(trUtf8("%1 Task Files").arg("TSPSG") + " (*.tspt)");
	238	filters.append(trUtf8("%1 Task Files").arg("ZKomModRd") + " (*.zkt)");
[31]	239	filters.append(trUtf8("All Files") + " (*)");
	240	od.setNameFilters(filters);
	241	if (od.exec() != QDialog::Accepted)
	242	return;
	243	QStringList files = od.selectedFiles();
[47]	244	if (files.empty())
[31]	245	return;
[47]	246	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
	247	if (!tspmodel->loadTask(files.first())) {
	248	QApplication::restoreOverrideCursor();
	249	return;
	250	}
	251	setFileName(files.first());
	252	taskView->resizeColumnsToContents();
	253	taskView->resizeRowsToContents();
	254	tabWidget->setCurrentIndex(0);
[37]	255	setWindowModified(false);
[42]	256	solutionText->clear();
	257	enableSolutionActions(false);
[47]	258	QApplication::restoreOverrideCursor();
[31]	259	}
	260
[50]	261	void MainWindow::actionFileSaveTriggered()
	262	{
	263	if ((fileName == trUtf8("Untitled") + ".tspt") \|\| (!fileName.endsWith(".tspt",Qt::CaseInsensitive)))
	264	saveTask();
	265	else {
	266	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
	267	if (tspmodel->saveTask(fileName))
	268	setWindowModified(false);
	269	QApplication::restoreOverrideCursor();
	270	}
	271	}
	272
[42]	273	void MainWindow::actionFileSaveAsTaskTriggered()
[31]	274	{
[37]	275	saveTask();
	276	}
	277
[42]	278	void MainWindow::actionFileSaveAsSolutionTriggered()
	279	{
	280	static QString selectedFile;
	281	if (selectedFile.isEmpty())
	282	selectedFile = "solution.html";
	283	QFileDialog sd(this);
	284	sd.setAcceptMode(QFileDialog::AcceptSave);
	285	QStringList filters(trUtf8("HTML Files") + " (.html .htm)");
[45]	286	#if QT_VERSION >= 0x040500
[42]	287	filters.append(trUtf8("OpenDocument Files") + " (*.odt)");
[45]	288	#endif // QT_VERSION >= 0x040500
[42]	289	filters.append(trUtf8("All Files") + " (*)");
	290	sd.setNameFilters(filters);
	291	sd.selectFile(selectedFile);
	292	if (sd.exec() != QDialog::Accepted)
	293	return;
	294	QStringList files = sd.selectedFiles();
	295	if (files.empty())
	296	return;
	297	selectedFile = files.first();
[51]	298	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
[45]	299	#if QT_VERSION >= 0x040500
[42]	300	QTextDocumentWriter dw(selectedFile);
	301	if (!(selectedFile.endsWith(".htm",Qt::CaseInsensitive) \|\| selectedFile.endsWith(".html",Qt::CaseInsensitive) \|\| selectedFile.endsWith(".odt",Qt::CaseInsensitive) \|\| selectedFile.endsWith(".txt",Qt::CaseInsensitive)))
	302	dw.setFormat("plaintext");
	303	dw.write(solutionText->document());
[45]	304	#else
	305	// Qt < 4.5 has no QTextDocumentWriter class
	306	QFile file(selectedFile);
[51]	307	if (!file.open(QFile::WriteOnly)) {
	308	QApplication::restoreOverrideCursor();
[45]	309	return;
[51]	310	}
[45]	311	QTextStream ts(&file);
	312	ts.setCodec(QTextCodec::codecForName("UTF-8"));
	313	ts << solutionText->document()->toHtml("UTF-8");
[51]	314	file.close();
[45]	315	#endif // QT_VERSION >= 0x040500
[51]	316	QApplication::restoreOverrideCursor();
[42]	317	}
	318
[37]	319	bool MainWindow::saveTask() {
[31]	320	QFileDialog sd(this);
	321	sd.setAcceptMode(QFileDialog::AcceptSave);
[47]	322	QStringList filters(trUtf8("%1 Task File").arg("TSPSG") + " (*.tspt)");
[31]	323	filters.append(trUtf8("All Files") + " (*)");
	324	sd.setNameFilters(filters);
	325	sd.setDefaultSuffix("tspt");
[47]	326	if (fileName.endsWith(".tspt",Qt::CaseInsensitive))
	327	sd.selectFile(fileName);
	328	else
	329	sd.selectFile(QFileInfo(fileName).canonicalPath() + "/" + QFileInfo(fileName).completeBaseName() + ".tspt");
[31]	330	if (sd.exec() != QDialog::Accepted)
[37]	331	return false;
[31]	332	QStringList files = sd.selectedFiles();
[47]	333	if (files.empty())
[37]	334	return false;
[47]	335	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
[37]	336	if (tspmodel->saveTask(files.first())) {
[47]	337	setFileName(files.first());
[37]	338	setWindowModified(false);
[47]	339	QApplication::restoreOverrideCursor();
[37]	340	return true;
[47]	341	}
	342	QApplication::restoreOverrideCursor();
	343	return false;
[31]	344	}
	345
[29]	346	void MainWindow::actionSettingsPreferencesTriggered()
	347	{
[1]	348	SettingsDialog sd(this);
[42]	349	if (sd.exec() != QDialog::Accepted)
	350	return;
	351	if (sd.colorChanged() \|\| sd.fontChanged()) {
	352	initDocStyleSheet();
	353	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)) {
	354	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
	355	solutionText->clear();
	356	solutionText->setHtml(output.join(""));
	357	QApplication::restoreOverrideCursor();
	358	}
	359	}
[1]	360	}
[6]	361
[54]	362	#ifndef QT_NO_PRINTER
[52]	363	void MainWindow::printPreview(QPrinter *printer)
[17]	364	{
[52]	365	solutionText->print(printer);
	366	}
	367
	368	void MainWindow::actionFilePrintPreviewTriggered()
	369	{
	370	QPrintPreviewDialog ppd(printer, this);
	371	connect(&ppd,SIGNAL(paintRequested(QPrinter )),SLOT(printPreview(QPrinter )));
	372	ppd.exec();
	373	}
	374
	375	void MainWindow::actionFilePrintTriggered()
	376	{
[29]	377	QPrintDialog pd(printer,this);
[33]	378	#if QT_VERSION >= 0x040500
	379	// No such methods in Qt < 4.5
[29]	380	pd.setOption(QAbstractPrintDialog::PrintSelection,false);
	381	pd.setOption(QAbstractPrintDialog::PrintPageRange,false);
[33]	382	#endif
[52]	383	if (pd.exec() != QDialog::Accepted)
	384	return;
[54]	385	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
[52]	386	solutionText->document()->print(printer);
[54]	387	QApplication::restoreOverrideCursor();
[17]	388	}
[54]	389	#endif // QT_NO_PRINTER
[17]	390
[29]	391	void MainWindow::buttonRandomClicked()
[6]	392	{
[54]	393	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
[15]	394	tspmodel->randomize();
[37]	395	setWindowModified(true);
[21]	396	taskView->resizeColumnsToContents();
	397	taskView->resizeRowsToContents();
[54]	398	QApplication::restoreOverrideCursor();
[6]	399	}
	400
[50]	401	void MainWindow::buttonBackToTaskClicked()
	402	{
	403	tabWidget->setCurrentIndex(0);
	404	}
	405
[42]	406	void MainWindow::outputMatrix(tMatrix matrix, QStringList &output, int nRow, int nCol)
	407	{
	408	int n = spinCities->value();
	409	QString line="";
	410	output.append("<table border=\"0\" cellspacing=\"0\" cellpadding=\"0\">");
	411	for (int r = 0; r < n; r++) {
	412	line = "<tr>";
	413	for (int c = 0; c < n; c++) {
	414	if (matrix[r][c] == INFINITY)
	415	line += "<td align=\"center\">"INFSTR"</td>";
	416	else if ((r == nRow) && (c == nCol))
	417	line += "<td align=\"center\" class=\"selected\">" + QVariant(matrix[r][c]).toString() + "</td>";
	418	else
	419	line += "<td align=\"center\">" + QVariant(matrix[r][c]).toString() + "</td>";
	420	}
	421	line += "</tr>";
	422	output.append(line);
	423	}
	424	output.append("</table>");
	425	}
	426
[29]	427	void MainWindow::buttonSolveClicked()
[6]	428	{
[13]	429	tMatrix matrix;
[42]	430	QList<double> row;
[15]	431	int n = spinCities->value();
[13]	432	bool ok;
[15]	433	for (int r = 0; r < n; r++) {
[42]	434	row.clear();
[15]	435	for (int c = 0; c < n; c++) {
[42]	436	row.append(tspmodel->index(r,c).data(Qt::UserRole).toDouble(&ok));
[15]	437	if (!ok) {
[47]	438	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]	439	return;
[13]	440	}
	441	}
	442	matrix.append(row);
	443	}
	444	CTSPSolver solver;
[50]	445	sStep *root = solver.solve(n,matrix,this);
[13]	446	if (!root)
[42]	447	return;
	448	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
	449	QColor color = settings->value("Output/Color",DEF_FONT_COLOR).value<QColor>();
	450	output.clear();
	451	output.append("<p>" + trUtf8("Variant #%1").arg(spinVariant->value()) + "</p>");
	452	output.append("<p>" + trUtf8("Task:") + "</p>");
	453	outputMatrix(matrix,output);
	454	output.append("<hr>");
	455	output.append("<p>" + trUtf8("Solution of Variant #%1 task").arg(spinVariant->value()) + "</p>");
	456	sStep *step = root;
	457	n = 1;
	458	QString path = "";
	459	while (n <= spinCities->value()) {
	460	if (step->prNode->prNode != NULL \|\| (step->prNode->prNode == NULL && step->plNode->prNode == NULL)) {
	461	if (n != spinCities->value()) {
	462	output.append("<p>" + trUtf8("Step #%1").arg(n++) + "</p>");
	463	outputMatrix(step->matrix,output,step->candidate.nRow,step->candidate.nCol);
	464	if (step->alts)
	465	output.append("<p class=\"hasalts\">" + trUtf8("This step has alternate candidates for branching.") + "</p>");
	466	output.append("<p> </p>");
	467	}
	468	path += QString(" (%1,%2)").arg(step->candidate.nRow + 1).arg(step->candidate.nCol + 1);
	469	}
	470	if (step->prNode->prNode != NULL)
	471	step = step->prNode;
	472	else if (step->plNode->prNode != NULL)
	473	step = step->plNode;
	474	else
	475	break;
	476	}
	477	output.append("<p>" + trUtf8("Optimal path:") + "</p>");
	478	output.append("<p>  " + path + "</p>");
	479	output.append("<p>" + trUtf8("The price is <b>%1</b> units.").arg(step->price) + "</p>");
	480	solutionText->setHtml(output.join(""));
	481	solutionText->setDocumentTitle(trUtf8("Solution of Variant #%1 task").arg(spinVariant->value()));
	482	enableSolutionActions();
	483	tabWidget->setCurrentIndex(1);
	484	QApplication::restoreOverrideCursor();
[6]	485	}
[21]	486
[29]	487	void MainWindow::actionHelpAboutTriggered()
[21]	488	{
	489	// TODO: Normal about window :-)
[30]	490	QString about = QString::fromUtf8("TSPSG - TSP Solver and Generator\n");
[45]	491	about += QString::fromUtf8(" Version: "BUILD_VERSION"\n");
[42]	492	about += QString::fromUtf8(" Copyright (C) 2007-%1 Lёppa <contacts[at]oleksii[dot]name>\n").arg(QDate::currentDate().toString("yyyy"));
[37]	493	about += QString::fromUtf8("Target OS: %1\n").arg(OS);
	494	about += "Qt library:\n";
[30]	495	about += QString::fromUtf8(" Compile time: %1\n").arg(QT_VERSION_STR);
	496	about += QString::fromUtf8(" Runtime: %1\n").arg(qVersion());
[41]	497	about += QString::fromUtf8("Built on %1 at %2\n").arg(__DATE__).arg(__TIME__);
[30]	498	about += "\n";
	499	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]	500	QMessageBox(QMessageBox::Information,"About",about,QMessageBox::Ok,this).exec();
[21]	501	}
	502
[29]	503	void MainWindow::loadLangList()
	504	{
	505	QSettings langinfo("i18n/languages.ini",QSettings::IniFormat);
[33]	506	#if QT_VERSION >= 0x040500
	507	// In Qt < 4.5 QSettings doesn't have method setIniCodec.
[29]	508	langinfo.setIniCodec("UTF-8");
[33]	509	#endif
[29]	510	QDir dir("i18n","*.qm",QDir::Name \| QDir::IgnoreCase,QDir::Files);
	511	if (!dir.exists())
	512	return;
	513	QFileInfoList langs = dir.entryInfoList();
	514	if (langs.size() <= 0)
	515	return;
	516	QAction *a;
	517	for (int k = 0; k < langs.size(); k++) {
	518	QFileInfo lang = langs.at(k);
[30]	519	if (!lang.completeBaseName().startsWith("qt_") && lang.completeBaseName().compare("en")) {
[33]	520	#if QT_VERSION >= 0x040500
[29]	521	a = menuSettingsLanguage->addAction(langinfo.value(lang.completeBaseName() + "/NativeName",lang.completeBaseName()).toString());
[33]	522	#else
	523	// We use Name if Qt < 4.5 because NativeName is in UTF-8, QSettings
	524	// reads .ini file as ASCII and there is no way to set file encoding.
	525	a = menuSettingsLanguage->addAction(langinfo.value(lang.completeBaseName() + "/Name",lang.completeBaseName()).toString());
	526	#endif
[29]	527	a->setData(lang.completeBaseName());
	528	a->setCheckable(true);
	529	a->setActionGroup(groupSettingsLanguageList);
	530	if (settings->value("Language",QLocale::system().name()).toString().startsWith(lang.completeBaseName()))
	531	a->setChecked(true);
	532	}
	533	}
	534	}
	535
	536	void MainWindow::actionSettingsLanguageAutodetectTriggered(bool checked)
	537	{
	538	if (checked) {
	539	settings->remove("Language");
	540	QMessageBox(QMessageBox::Information,trUtf8("Language change"),trUtf8("Language will be autodetected on next application start."),QMessageBox::Ok,this).exec();
	541	} else
	542	settings->setValue("Language",groupSettingsLanguageList->checkedAction()->data().toString());
	543	}
	544
	545	void MainWindow::groupSettingsLanguageListTriggered(QAction *action)
	546	{
	547	if (actionSettingsLanguageAutodetect->isChecked()) {
	548	// We have language autodetection. It needs to be disabled to change language.
	549	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) {
	550	actionSettingsLanguageAutodetect->trigger();
	551	} else
	552	return;
	553	}
[47]	554	bool untitled = (fileName == trUtf8("Untitled") + ".tspt");
[30]	555	if (loadLanguage(action->data().toString())) {
[29]	556	settings->setValue("Language",action->data().toString());
	557	retranslateUi(this);
[47]	558	if (untitled)
	559	setFileName();
[29]	560	}
	561	}
	562
[21]	563	void MainWindow::closeEvent(QCloseEvent *event)
	564	{
[47]	565	if (!maybeSave()) {
	566	event->ignore();
	567	return;
[37]	568	}
[26]	569	settings->setValue("NumCities",spinCities->value());
	570	#ifndef Q_OS_WINCE
[21]	571	// Saving windows state
[23]	572	if (settings->value("SavePos",false).toBool()) {
	573	settings->beginGroup("MainWindow");
	574	settings->setValue("Maximized",isMaximized());
[21]	575	if (!isMaximized()) {
[23]	576	settings->setValue("Size",size());
	577	settings->setValue("Position",pos());
[21]	578	}
[23]	579	settings->endGroup();
[21]	580	}
[26]	581	#endif // Q_OS_WINCE
[21]	582	QMainWindow::closeEvent(event);
	583	}
[31]	584
[37]	585	void MainWindow::dataChanged()
	586	{
	587	setWindowModified(true);
	588	}
	589
[31]	590	void MainWindow::numCitiesChanged(int nCities)
	591	{
[50]	592	blockSignals(true);
[31]	593	spinCities->setValue(nCities);
[50]	594	blockSignals(false);
[31]	595	}

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