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source: tspsg-svn/trunk/src/mainwindow.cpp @ 72

Last change on this file since 72 was 71, checked in by laleppa, 15 years ago

+ Toolbar state and position is now saved and restored with Main Window state and position.

Made some small improvements to the code.
Fixed some errors in the documentation.
Made source code more "documentation friendly".

Property svn:keywords set to Id URL

File size: 22.8 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 71 2009-12-07 16:06:44Z 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);
[71]	85
	86	if (settings->value("SavePos", false).toBool()) {
[21]	87	// Loading of saved window state
[23]	88	settings->beginGroup("MainWindow");
[71]	89	#ifndef Q_OS_WINCE
	90	restoreGeometry(settings->value("Geometry").toByteArray());
	91	#endif // Q_OS_WINCE
	92	restoreState(settings->value("State").toByteArray());
[23]	93	settings->endGroup();
[71]	94	#ifndef Q_OS_WINCE
[21]	95	} else {
	96	// Centering main window
[71]	97	QRect rect = geometry();
[21]	98	rect.moveCenter(QApplication::desktop()->availableGeometry(this).center());
	99	setGeometry(rect);
[71]	100	#endif // Q_OS_WINCE
[21]	101	}
[71]	102
[11]	103	qsrand(QDateTime().currentDateTime().toTime_t());
[71]	104	tspmodel = new CTSPModel(this);
[52]	105	taskView->setModel(tspmodel);
[31]	106	connect(tspmodel,SIGNAL(numCitiesChanged(int)),this,SLOT(numCitiesChanged(int)));
[57]	107	connect(tspmodel,SIGNAL(dataChanged(const QModelIndex &, const QModelIndex &)),this,SLOT(dataChanged(const QModelIndex &, const QModelIndex &)));
[37]	108	connect(tspmodel,SIGNAL(layoutChanged()),this,SLOT(dataChanged()));
[50]	109	if ((QCoreApplication::arguments().count() > 1) && (tspmodel->loadTask(QCoreApplication::arguments().at(1))))
[47]	110	setFileName(QCoreApplication::arguments().at(1));
[50]	111	else {
[47]	112	setFileName();
[50]	113	spinCities->setValue(settings->value("NumCities",DEF_NUM_CITIES).toInt());
[52]	114	spinCitiesValueChanged(spinCities->value());
[50]	115	}
	116	setWindowModified(false);
[6]	117	}
	118
[67]	119	/* Privates **********************************************************/
[42]	120
[29]	121	void MainWindow::actionFileNewTriggered()
[1]	122	{
[47]	123	if (!maybeSave())
	124	return;
[54]	125	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
[29]	126	tspmodel->clear();
[47]	127	setFileName();
[37]	128	setWindowModified(false);
[42]	129	tabWidget->setCurrentIndex(0);
	130	solutionText->clear();
	131	enableSolutionActions(false);
[54]	132	QApplication::restoreOverrideCursor();
[29]	133	}
	134
[31]	135	void MainWindow::actionFileOpenTriggered()
	136	{
[47]	137	if (!maybeSave())
	138	return;
[31]	139	QFileDialog od(this);
	140	od.setAcceptMode(QFileDialog::AcceptOpen);
	141	od.setFileMode(QFileDialog::ExistingFile);
	142	QStringList filters(trUtf8("All Supported Formats") + " (.tspt .zkt)");
[47]	143	filters.append(trUtf8("%1 Task Files").arg("TSPSG") + " (*.tspt)");
	144	filters.append(trUtf8("%1 Task Files").arg("ZKomModRd") + " (*.zkt)");
[31]	145	filters.append(trUtf8("All Files") + " (*)");
	146	od.setNameFilters(filters);
	147	if (od.exec() != QDialog::Accepted)
	148	return;
	149	QStringList files = od.selectedFiles();
[47]	150	if (files.empty())
[31]	151	return;
[59]	152	if (!tspmodel->loadTask(files.first()))
[47]	153	return;
	154	setFileName(files.first());
	155	tabWidget->setCurrentIndex(0);
[37]	156	setWindowModified(false);
[42]	157	solutionText->clear();
	158	enableSolutionActions(false);
[31]	159	}
	160
[50]	161	void MainWindow::actionFileSaveTriggered()
	162	{
	163	if ((fileName == trUtf8("Untitled") + ".tspt") \|\| (!fileName.endsWith(".tspt",Qt::CaseInsensitive)))
	164	saveTask();
[59]	165	else
[50]	166	if (tspmodel->saveTask(fileName))
	167	setWindowModified(false);
	168	}
	169
[42]	170	void MainWindow::actionFileSaveAsTaskTriggered()
[31]	171	{
[37]	172	saveTask();
	173	}
	174
[42]	175	void MainWindow::actionFileSaveAsSolutionTriggered()
	176	{
	177	static QString selectedFile;
	178	if (selectedFile.isEmpty())
[55]	179	#ifndef QT_NO_PRINTER
	180	selectedFile = "solution.pdf";
	181	#else
[42]	182	selectedFile = "solution.html";
[55]	183	#endif // QT_NO_PRINTER
[42]	184	QFileDialog sd(this);
	185	sd.setAcceptMode(QFileDialog::AcceptSave);
[55]	186	QStringList filters;
	187	#ifndef QT_NO_PRINTER
	188	filters.append(trUtf8("PDF Files") + "(*.pdf)");
	189	#endif
	190	filters.append(trUtf8("HTML Files") + " (.html .htm)");
[45]	191	#if QT_VERSION >= 0x040500
[42]	192	filters.append(trUtf8("OpenDocument Files") + " (*.odt)");
[45]	193	#endif // QT_VERSION >= 0x040500
[42]	194	filters.append(trUtf8("All Files") + " (*)");
	195	sd.setNameFilters(filters);
	196	sd.selectFile(selectedFile);
	197	if (sd.exec() != QDialog::Accepted)
	198	return;
	199	QStringList files = sd.selectedFiles();
	200	if (files.empty())
	201	return;
	202	selectedFile = files.first();
[51]	203	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
[55]	204	#ifndef QT_NO_PRINTER
	205	if (selectedFile.endsWith(".pdf",Qt::CaseInsensitive)) {
	206	QPrinter printer(QPrinter::HighResolution);
	207	printer.setOutputFormat(QPrinter::PdfFormat);
	208	printer.setOutputFileName(selectedFile);
	209	solutionText->document()->print(&printer);
	210	QApplication::restoreOverrideCursor();
	211	return;
	212	}
	213	#endif
[45]	214	#if QT_VERSION >= 0x040500
[42]	215	QTextDocumentWriter dw(selectedFile);
	216	if (!(selectedFile.endsWith(".htm",Qt::CaseInsensitive) \|\| selectedFile.endsWith(".html",Qt::CaseInsensitive) \|\| selectedFile.endsWith(".odt",Qt::CaseInsensitive) \|\| selectedFile.endsWith(".txt",Qt::CaseInsensitive)))
	217	dw.setFormat("plaintext");
	218	dw.write(solutionText->document());
[45]	219	#else
	220	// Qt < 4.5 has no QTextDocumentWriter class
	221	QFile file(selectedFile);
[51]	222	if (!file.open(QFile::WriteOnly)) {
	223	QApplication::restoreOverrideCursor();
[45]	224	return;
[51]	225	}
[45]	226	QTextStream ts(&file);
	227	ts.setCodec(QTextCodec::codecForName("UTF-8"));
	228	ts << solutionText->document()->toHtml("UTF-8");
[51]	229	file.close();
[45]	230	#endif // QT_VERSION >= 0x040500
[51]	231	QApplication::restoreOverrideCursor();
[42]	232	}
	233
[67]	234	#ifndef QT_NO_PRINTER
	235	void MainWindow::actionFilePrintPreviewTriggered()
	236	{
	237	QPrintPreviewDialog ppd(printer, this);
	238	connect(&ppd,SIGNAL(paintRequested(QPrinter )),SLOT(printPreview(QPrinter )));
	239	ppd.exec();
[31]	240	}
	241
[67]	242	void MainWindow::actionFilePrintTriggered()
	243	{
	244	QPrintDialog pd(printer,this);
	245	#if QT_VERSION >= 0x040500
	246	// No such methods in Qt < 4.5
	247	pd.setOption(QAbstractPrintDialog::PrintSelection,false);
	248	pd.setOption(QAbstractPrintDialog::PrintPageRange,false);
	249	#endif
	250	if (pd.exec() != QDialog::Accepted)
	251	return;
	252	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
	253	solutionText->document()->print(printer);
	254	QApplication::restoreOverrideCursor();
	255	}
	256	#endif // QT_NO_PRINTER
	257
[29]	258	void MainWindow::actionSettingsPreferencesTriggered()
	259	{
[1]	260	SettingsDialog sd(this);
[42]	261	if (sd.exec() != QDialog::Accepted)
	262	return;
	263	if (sd.colorChanged() \|\| sd.fontChanged()) {
	264	initDocStyleSheet();
	265	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)) {
	266	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
	267	solutionText->clear();
	268	solutionText->setHtml(output.join(""));
	269	QApplication::restoreOverrideCursor();
	270	}
	271	}
[1]	272	}
[6]	273
[67]	274	void MainWindow::actionSettingsLanguageAutodetectTriggered(bool checked)
[17]	275	{
[67]	276	if (checked) {
	277	settings->remove("Language");
	278	QMessageBox(QMessageBox::Information,trUtf8("Language change"),trUtf8("Language will be autodetected on next application start."),QMessageBox::Ok,this).exec();
	279	} else
	280	settings->setValue("Language",groupSettingsLanguageList->checkedAction()->data().toString());
[52]	281	}
	282
[67]	283	void MainWindow::groupSettingsLanguageListTriggered(QAction *action)
[52]	284	{
[67]	285	if (actionSettingsLanguageAutodetect->isChecked()) {
	286	// We have language autodetection. It needs to be disabled to change language.
	287	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) {
	288	actionSettingsLanguageAutodetect->trigger();
	289	} else
	290	return;
	291	}
	292	bool untitled = (fileName == trUtf8("Untitled") + ".tspt");
	293	if (loadLanguage(action->data().toString())) {
	294	settings->setValue("Language",action->data().toString());
	295	retranslateUi(this);
	296	if (untitled)
	297	setFileName();
	298	}
[52]	299	}
	300
[67]	301	void MainWindow::actionHelpAboutTriggered()
[52]	302	{
[67]	303	//! \todo TODO: Normal about window :-)
	304	QString about = QString::fromUtf8("TSPSG: TSP Solver and Generator\n");
	305	about += QString::fromUtf8(" Version: "BUILD_VERSION"\n");
	306	about += QString::fromUtf8(" Copyright (C) 2007-%1 Lёppa <contacts[at]oleksii[dot]name>\n").arg(QDate::currentDate().toString("yyyy"));
	307	about += QString::fromUtf8("Target OS: %1\n").arg(OS);
	308	about += "Qt library:\n";
	309	about += QString::fromUtf8(" Compile time: %1\n").arg(QT_VERSION_STR);
	310	about += QString::fromUtf8(" Runtime: %1\n").arg(qVersion());
	311	about += QString::fromUtf8("Built on %1 at %2\n").arg(__DATE__).arg(__TIME__);
	312	about += QString::fromUtf8(VERSIONID"\n\n");
	313	about += QString::fromUtf8("Algorithm: %1\n").arg(CTSPSolver::getVersionId());
	314	about += "\n";
	315	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.";
	316	QMessageBox(QMessageBox::Information,"About",about,QMessageBox::Ok,this).exec();
[17]	317	}
	318
[50]	319	void MainWindow::buttonBackToTaskClicked()
	320	{
	321	tabWidget->setCurrentIndex(0);
	322	}
	323
[67]	324	void MainWindow::buttonRandomClicked()
[42]	325	{
[67]	326	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
	327	tspmodel->randomize();
	328	QApplication::restoreOverrideCursor();
[42]	329	}
	330
[29]	331	void MainWindow::buttonSolveClicked()
[6]	332	{
[13]	333	tMatrix matrix;
[42]	334	QList<double> row;
[15]	335	int n = spinCities->value();
[13]	336	bool ok;
[15]	337	for (int r = 0; r < n; r++) {
[42]	338	row.clear();
[15]	339	for (int c = 0; c < n; c++) {
[42]	340	row.append(tspmodel->index(r,c).data(Qt::UserRole).toDouble(&ok));
[15]	341	if (!ok) {
[47]	342	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]	343	return;
[13]	344	}
	345	}
	346	matrix.append(row);
	347	}
	348	CTSPSolver solver;
[50]	349	sStep *root = solver.solve(n,matrix,this);
[13]	350	if (!root)
[42]	351	return;
	352	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
	353	QColor color = settings->value("Output/Color",DEF_FONT_COLOR).value<QColor>();
	354	output.clear();
	355	output.append("<p>" + trUtf8("Variant #%1").arg(spinVariant->value()) + "</p>");
	356	output.append("<p>" + trUtf8("Task:") + "</p>");
	357	outputMatrix(matrix,output);
	358	output.append("<hr>");
	359	output.append("<p>" + trUtf8("Solution of Variant #%1 task").arg(spinVariant->value()) + "</p>");
	360	sStep *step = root;
	361	n = 1;
	362	while (n <= spinCities->value()) {
	363	if (step->prNode->prNode != NULL \|\| (step->prNode->prNode == NULL && step->plNode->prNode == NULL)) {
	364	if (n != spinCities->value()) {
	365	output.append("<p>" + trUtf8("Step #%1").arg(n++) + "</p>");
	366	outputMatrix(step->matrix,output,step->candidate.nRow,step->candidate.nCol);
	367	if (step->alts)
	368	output.append("<p class=\"hasalts\">" + trUtf8("This step has alternate candidates for branching.") + "</p>");
	369	output.append("<p> </p>");
	370	}
	371	}
	372	if (step->prNode->prNode != NULL)
	373	step = step->prNode;
	374	else if (step->plNode->prNode != NULL)
	375	step = step->plNode;
	376	else
	377	break;
	378	}
[60]	379	if (solver.isOptimal())
	380	output.append("<p>" + trUtf8("Optimal path:") + "</p>");
	381	else
	382	output.append("<p>" + trUtf8("Resulting path:") + "</p>");
	383	output.append("<p>  " + solver.getSortedPath() + "</p>");
[42]	384	output.append("<p>" + trUtf8("The price is <b>%1</b> units.").arg(step->price) + "</p>");
[60]	385	if (!solver.isOptimal()) {
	386	output.append("<p> </p>");
	387	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>");
	388	}
[65]	389	output.append("<p></p>");
[42]	390	solutionText->setHtml(output.join(""));
	391	solutionText->setDocumentTitle(trUtf8("Solution of Variant #%1 task").arg(spinVariant->value()));
[65]	392
	393	// Scrolling to the end of text.
	394	QTextCursor cursor(solutionText->textCursor());
	395	cursor.movePosition(QTextCursor::End, QTextCursor::MoveAnchor);
	396	solutionText->setTextCursor(cursor);
	397
[42]	398	enableSolutionActions();
	399	tabWidget->setCurrentIndex(1);
	400	QApplication::restoreOverrideCursor();
[6]	401	}
[21]	402
[67]	403	void MainWindow::dataChanged()
[21]	404	{
[67]	405	setWindowModified(true);
[21]	406	}
	407
[67]	408	void MainWindow::dataChanged(const QModelIndex &tl, const QModelIndex &br)
	409	{
	410	setWindowModified(true);
	411	if (settings->value("Autosize",true).toBool()) {
	412	for (int k = tl.row(); k <= br.row(); k++)
	413	taskView->resizeRowToContents(k);
	414	for (int k = tl.column(); k <= br.column(); k++)
	415	taskView->resizeColumnToContents(k);
	416	}
	417	}
	418
	419	void MainWindow::numCitiesChanged(int nCities)
	420	{
	421	blockSignals(true);
	422	spinCities->setValue(nCities);
	423	blockSignals(false);
	424	}
	425
	426	#ifndef QT_NO_PRINTER
	427	void MainWindow::printPreview(QPrinter *printer)
	428	{
	429	solutionText->print(printer);
	430	}
	431	#endif // QT_NO_PRINTER
	432
	433	void MainWindow::spinCitiesValueChanged(int n)
	434	{
	435	int count = tspmodel->numCities();
	436	tspmodel->setNumCities(n);
	437	if ((n > count) && settings->value("Autosize",true).toBool())
	438	for (int k = count; k < n; k++) {
	439	taskView->resizeColumnToContents(k);
	440	taskView->resizeRowToContents(k);
	441	}
	442	}
	443
[71]	444	void MainWindow::closeEvent(QCloseEvent *ev)
[69]	445	{
	446	if (!maybeSave()) {
[71]	447	ev->ignore();
[69]	448	return;
	449	}
[71]	450	settings->setValue("NumCities", spinCities->value());
	451
	452	// Saving Main Window state
	453	if (settings->value("SavePos", false).toBool()) {
	454	settings->beginGroup("MainWindow");
[69]	455	#ifndef Q_OS_WINCE
[71]	456	settings->setValue("Geometry", saveGeometry());
	457	#endif // Q_OS_WINCE
	458	settings->setValue("State", saveState());
[69]	459	settings->endGroup();
	460	}
[71]	461
	462	QMainWindow::closeEvent(ev);
[69]	463	}
	464
[67]	465	void MainWindow::enableSolutionActions(bool enable)
	466	{
	467	buttonSaveSolution->setEnabled(enable);
	468	actionFileSaveAsSolution->setEnabled(enable);
	469	solutionText->setEnabled(enable);
	470	if (!enable)
	471	output.clear();
	472	#ifndef QT_NO_PRINTER
	473	actionFilePrint->setEnabled(enable);
	474	actionFilePrintPreview->setEnabled(enable);
	475	#endif // QT_NO_PRINTER
	476	}
	477
	478	void MainWindow::initDocStyleSheet()
	479	{
	480	QColor color = settings->value("Output/Color",DEF_FONT_COLOR).value<QColor>();
	481	QColor hilight;
	482	if (color.value() < 192)
	483	hilight.setHsv(color.hue(),color.saturation(),127 + qRound(color.value() / 2));
	484	else
	485	hilight.setHsv(color.hue(),color.saturation(),color.value() / 2);
	486	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;}");
	487	solutionText->document()->setDefaultFont(settings->value("Output/Font",QFont(DEF_FONT_FAMILY,DEF_FONT_SIZE)).value<QFont>());
	488	}
	489
[29]	490	void MainWindow::loadLangList()
	491	{
[57]	492	QSettings langinfo(PATH_I18N"/languages.ini",QSettings::IniFormat);
[33]	493	#if QT_VERSION >= 0x040500
	494	// In Qt < 4.5 QSettings doesn't have method setIniCodec.
[29]	495	langinfo.setIniCodec("UTF-8");
[33]	496	#endif
[57]	497	QDir dir(PATH_I18N,"*.qm",QDir::Name \| QDir::IgnoreCase,QDir::Files);
[29]	498	if (!dir.exists())
	499	return;
	500	QFileInfoList langs = dir.entryInfoList();
	501	if (langs.size() <= 0)
	502	return;
	503	QAction *a;
	504	for (int k = 0; k < langs.size(); k++) {
	505	QFileInfo lang = langs.at(k);
[30]	506	if (!lang.completeBaseName().startsWith("qt_") && lang.completeBaseName().compare("en")) {
[33]	507	#if QT_VERSION >= 0x040500
[29]	508	a = menuSettingsLanguage->addAction(langinfo.value(lang.completeBaseName() + "/NativeName",lang.completeBaseName()).toString());
[33]	509	#else
	510	// We use Name if Qt < 4.5 because NativeName is in UTF-8, QSettings
	511	// reads .ini file as ASCII and there is no way to set file encoding.
	512	a = menuSettingsLanguage->addAction(langinfo.value(lang.completeBaseName() + "/Name",lang.completeBaseName()).toString());
	513	#endif
[29]	514	a->setData(lang.completeBaseName());
	515	a->setCheckable(true);
	516	a->setActionGroup(groupSettingsLanguageList);
	517	if (settings->value("Language",QLocale::system().name()).toString().startsWith(lang.completeBaseName()))
	518	a->setChecked(true);
	519	}
	520	}
	521	}
	522
[71]	523	bool MainWindow::loadLanguage(const QString &lang)
[29]	524	{
[67]	525	// i18n
	526	bool ad = false;
[71]	527	QString lng = lang;
	528	if (lng.isEmpty()) {
[67]	529	ad = settings->value("Language","").toString().isEmpty();
[71]	530	lng = settings->value("Language",QLocale::system().name()).toString();
[29]	531	}
[67]	532	static QTranslator *qtTranslator; // Qt library translator
	533	if (qtTranslator) {
	534	qApp->removeTranslator(qtTranslator);
	535	delete qtTranslator;
	536	qtTranslator = NULL;
[29]	537	}
[67]	538	qtTranslator = new QTranslator();
	539	static QTranslator *translator; // Application translator
	540	if (translator) {
	541	qApp->removeTranslator(translator);
	542	delete translator;
[37]	543	}
[67]	544	translator = new QTranslator();
[71]	545	if (lng.compare("en") && !lng.startsWith("en_")) {
[67]	546	// Trying to load system Qt library translation...
[71]	547	if (qtTranslator->load("qt_" + lng,QLibraryInfo::location(QLibraryInfo::TranslationsPath)))
[67]	548	qApp->installTranslator(qtTranslator);
	549	else
	550	// No luck. Let's try to load bundled one.
[71]	551	if (qtTranslator->load("qt_" + lng,PATH_I18N))
[67]	552	qApp->installTranslator(qtTranslator);
	553	else {
	554	// Qt library translation unavailable
	555	delete qtTranslator;
	556	qtTranslator = NULL;
	557	}
	558	// Now let's load application translation.
[71]	559	if (translator->load(lng,PATH_I18N))
[67]	560	qApp->installTranslator(translator);
	561	else {
	562	if (!ad)
	563	QMessageBox(QMessageBox::Warning,trUtf8("Language Change"),trUtf8("Unable to load translation language."),QMessageBox::Ok,this).exec();
	564	delete translator;
	565	translator = NULL;
	566	return false;
[21]	567	}
	568	}
[67]	569	return true;
[21]	570	}
[31]	571
[67]	572	bool MainWindow::maybeSave()
[37]	573	{
[67]	574	if (!isWindowModified())
	575	return true;
	576	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();
	577	if (res == QMessageBox::Save)
	578	return saveTask();
	579	else if (res == QMessageBox::Cancel)
	580	return false;
	581	else
	582	return true;
[37]	583	}
	584
[71]	585	void MainWindow::outputMatrix(const tMatrix &matrix, QStringList &output, int nRow, int nCol)
[57]	586	{
[67]	587	int n = spinCities->value();
	588	QString line="";
	589	output.append("<table border=\"0\" cellspacing=\"0\" cellpadding=\"0\">");
	590	for (int r = 0; r < n; r++) {
	591	line = "<tr>";
	592	for (int c = 0; c < n; c++) {
[71]	593	if (matrix.at(r).at(c) == INFINITY)
[67]	594	line += "<td align=\"center\">"INFSTR"</td>";
	595	else if ((r == nRow) && (c == nCol))
[71]	596	line += "<td align=\"center\" class=\"selected\">" + QVariant(matrix.at(r).at(c)).toString() + "</td>";
[67]	597	else
[71]	598	line += "<td align=\"center\">" + QVariant(matrix.at(r).at(c)).toString() + "</td>";
[67]	599	}
	600	line += "</tr>";
	601	output.append(line);
[57]	602	}
[67]	603	output.append("</table>");
[57]	604	}
	605
[67]	606	bool MainWindow::saveTask() {
	607	QFileDialog sd(this);
	608	sd.setAcceptMode(QFileDialog::AcceptSave);
	609	QStringList filters(trUtf8("%1 Task File").arg("TSPSG") + " (*.tspt)");
	610	filters.append(trUtf8("All Files") + " (*)");
	611	sd.setNameFilters(filters);
	612	sd.setDefaultSuffix("tspt");
	613	if (fileName.endsWith(".tspt",Qt::CaseInsensitive))
	614	sd.selectFile(fileName);
	615	else
	616	sd.selectFile(QFileInfo(fileName).canonicalPath() + "/" + QFileInfo(fileName).completeBaseName() + ".tspt");
	617	if (sd.exec() != QDialog::Accepted)
	618	return false;
	619	QStringList files = sd.selectedFiles();
	620	if (files.empty())
	621	return false;
	622	if (tspmodel->saveTask(files.first())) {
	623	setFileName(files.first());
	624	setWindowModified(false);
	625	return true;
	626	}
	627	return false;
	628	}
	629
[71]	630	void MainWindow::setFileName(const QString &fileName)
[31]	631	{
[67]	632	this->fileName = fileName;
	633	setWindowTitle(QString("%1[*] - %2").arg(QFileInfo(fileName).completeBaseName()).arg(trUtf8("Travelling Salesman Problem")));
[31]	634	}

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