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source: tspsg-svn/trunk/src/mainwindow.cpp @ 69

Last change on this file since 69 was 69, checked in by laleppa, 15 years ago
Made MainWindow::closeEvent() private.
Property svn:keywords set to `Id URL`
File size: 22.9 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 69 2009-11-02 08:44:17Z 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);
[69]	85	#ifndef Q_OS_WINCE
[17]	86	QRect rect = geometry();
[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
[67]	117	/* Privates **********************************************************/
[42]	118
[29]	119	void MainWindow::actionFileNewTriggered()
[1]	120	{
[47]	121	if (!maybeSave())
	122	return;
[54]	123	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
[29]	124	tspmodel->clear();
[47]	125	setFileName();
[37]	126	setWindowModified(false);
[42]	127	tabWidget->setCurrentIndex(0);
	128	solutionText->clear();
	129	enableSolutionActions(false);
[54]	130	QApplication::restoreOverrideCursor();
[29]	131	}
	132
[31]	133	void MainWindow::actionFileOpenTriggered()
	134	{
[47]	135	if (!maybeSave())
	136	return;
[31]	137	QFileDialog od(this);
	138	od.setAcceptMode(QFileDialog::AcceptOpen);
	139	od.setFileMode(QFileDialog::ExistingFile);
	140	QStringList filters(trUtf8("All Supported Formats") + " (.tspt .zkt)");
[47]	141	filters.append(trUtf8("%1 Task Files").arg("TSPSG") + " (*.tspt)");
	142	filters.append(trUtf8("%1 Task Files").arg("ZKomModRd") + " (*.zkt)");
[31]	143	filters.append(trUtf8("All Files") + " (*)");
	144	od.setNameFilters(filters);
	145	if (od.exec() != QDialog::Accepted)
	146	return;
	147	QStringList files = od.selectedFiles();
[47]	148	if (files.empty())
[31]	149	return;
[59]	150	if (!tspmodel->loadTask(files.first()))
[47]	151	return;
	152	setFileName(files.first());
	153	tabWidget->setCurrentIndex(0);
[37]	154	setWindowModified(false);
[42]	155	solutionText->clear();
	156	enableSolutionActions(false);
[31]	157	}
	158
[50]	159	void MainWindow::actionFileSaveTriggered()
	160	{
	161	if ((fileName == trUtf8("Untitled") + ".tspt") \|\| (!fileName.endsWith(".tspt",Qt::CaseInsensitive)))
	162	saveTask();
[59]	163	else
[50]	164	if (tspmodel->saveTask(fileName))
	165	setWindowModified(false);
	166	}
	167
[42]	168	void MainWindow::actionFileSaveAsTaskTriggered()
[31]	169	{
[37]	170	saveTask();
	171	}
	172
[42]	173	void MainWindow::actionFileSaveAsSolutionTriggered()
	174	{
	175	static QString selectedFile;
	176	if (selectedFile.isEmpty())
[55]	177	#ifndef QT_NO_PRINTER
	178	selectedFile = "solution.pdf";
	179	#else
[42]	180	selectedFile = "solution.html";
[55]	181	#endif // QT_NO_PRINTER
[42]	182	QFileDialog sd(this);
	183	sd.setAcceptMode(QFileDialog::AcceptSave);
[55]	184	QStringList filters;
	185	#ifndef QT_NO_PRINTER
	186	filters.append(trUtf8("PDF Files") + "(*.pdf)");
	187	#endif
	188	filters.append(trUtf8("HTML Files") + " (.html .htm)");
[45]	189	#if QT_VERSION >= 0x040500
[42]	190	filters.append(trUtf8("OpenDocument Files") + " (*.odt)");
[45]	191	#endif // QT_VERSION >= 0x040500
[42]	192	filters.append(trUtf8("All Files") + " (*)");
	193	sd.setNameFilters(filters);
	194	sd.selectFile(selectedFile);
	195	if (sd.exec() != QDialog::Accepted)
	196	return;
	197	QStringList files = sd.selectedFiles();
	198	if (files.empty())
	199	return;
	200	selectedFile = files.first();
[51]	201	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
[55]	202	#ifndef QT_NO_PRINTER
	203	if (selectedFile.endsWith(".pdf",Qt::CaseInsensitive)) {
	204	QPrinter printer(QPrinter::HighResolution);
	205	printer.setOutputFormat(QPrinter::PdfFormat);
	206	printer.setOutputFileName(selectedFile);
	207	solutionText->document()->print(&printer);
	208	QApplication::restoreOverrideCursor();
	209	return;
	210	}
	211	#endif
[45]	212	#if QT_VERSION >= 0x040500
[42]	213	QTextDocumentWriter dw(selectedFile);
	214	if (!(selectedFile.endsWith(".htm",Qt::CaseInsensitive) \|\| selectedFile.endsWith(".html",Qt::CaseInsensitive) \|\| selectedFile.endsWith(".odt",Qt::CaseInsensitive) \|\| selectedFile.endsWith(".txt",Qt::CaseInsensitive)))
	215	dw.setFormat("plaintext");
	216	dw.write(solutionText->document());
[45]	217	#else
	218	// Qt < 4.5 has no QTextDocumentWriter class
	219	QFile file(selectedFile);
[51]	220	if (!file.open(QFile::WriteOnly)) {
	221	QApplication::restoreOverrideCursor();
[45]	222	return;
[51]	223	}
[45]	224	QTextStream ts(&file);
	225	ts.setCodec(QTextCodec::codecForName("UTF-8"));
	226	ts << solutionText->document()->toHtml("UTF-8");
[51]	227	file.close();
[45]	228	#endif // QT_VERSION >= 0x040500
[51]	229	QApplication::restoreOverrideCursor();
[42]	230	}
	231
[67]	232	#ifndef QT_NO_PRINTER
	233	void MainWindow::actionFilePrintPreviewTriggered()
	234	{
	235	QPrintPreviewDialog ppd(printer, this);
	236	connect(&ppd,SIGNAL(paintRequested(QPrinter )),SLOT(printPreview(QPrinter )));
	237	ppd.exec();
[31]	238	}
	239
[67]	240	void MainWindow::actionFilePrintTriggered()
	241	{
	242	QPrintDialog pd(printer,this);
	243	#if QT_VERSION >= 0x040500
	244	// No such methods in Qt < 4.5
	245	pd.setOption(QAbstractPrintDialog::PrintSelection,false);
	246	pd.setOption(QAbstractPrintDialog::PrintPageRange,false);
	247	#endif
	248	if (pd.exec() != QDialog::Accepted)
	249	return;
	250	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
	251	solutionText->document()->print(printer);
	252	QApplication::restoreOverrideCursor();
	253	}
	254	#endif // QT_NO_PRINTER
	255
[29]	256	void MainWindow::actionSettingsPreferencesTriggered()
	257	{
[1]	258	SettingsDialog sd(this);
[42]	259	if (sd.exec() != QDialog::Accepted)
	260	return;
	261	if (sd.colorChanged() \|\| sd.fontChanged()) {
	262	initDocStyleSheet();
	263	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)) {
	264	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
	265	solutionText->clear();
	266	solutionText->setHtml(output.join(""));
	267	QApplication::restoreOverrideCursor();
	268	}
	269	}
[1]	270	}
[6]	271
[67]	272	void MainWindow::actionSettingsLanguageAutodetectTriggered(bool checked)
[17]	273	{
[67]	274	if (checked) {
	275	settings->remove("Language");
	276	QMessageBox(QMessageBox::Information,trUtf8("Language change"),trUtf8("Language will be autodetected on next application start."),QMessageBox::Ok,this).exec();
	277	} else
	278	settings->setValue("Language",groupSettingsLanguageList->checkedAction()->data().toString());
[52]	279	}
	280
[67]	281	void MainWindow::groupSettingsLanguageListTriggered(QAction *action)
[52]	282	{
[67]	283	if (actionSettingsLanguageAutodetect->isChecked()) {
	284	// We have language autodetection. It needs to be disabled to change language.
	285	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) {
	286	actionSettingsLanguageAutodetect->trigger();
	287	} else
	288	return;
	289	}
	290	bool untitled = (fileName == trUtf8("Untitled") + ".tspt");
	291	if (loadLanguage(action->data().toString())) {
	292	settings->setValue("Language",action->data().toString());
	293	retranslateUi(this);
	294	if (untitled)
	295	setFileName();
	296	}
[52]	297	}
	298
[67]	299	void MainWindow::actionHelpAboutTriggered()
[52]	300	{
[67]	301	//! \todo TODO: Normal about window :-)
	302	QString about = QString::fromUtf8("TSPSG: TSP Solver and Generator\n");
	303	about += QString::fromUtf8(" Version: "BUILD_VERSION"\n");
	304	about += QString::fromUtf8(" Copyright (C) 2007-%1 Lёppa <contacts[at]oleksii[dot]name>\n").arg(QDate::currentDate().toString("yyyy"));
	305	about += QString::fromUtf8("Target OS: %1\n").arg(OS);
	306	about += "Qt library:\n";
	307	about += QString::fromUtf8(" Compile time: %1\n").arg(QT_VERSION_STR);
	308	about += QString::fromUtf8(" Runtime: %1\n").arg(qVersion());
	309	about += QString::fromUtf8("Built on %1 at %2\n").arg(__DATE__).arg(__TIME__);
	310	about += QString::fromUtf8(VERSIONID"\n\n");
	311	about += QString::fromUtf8("Algorithm: %1\n").arg(CTSPSolver::getVersionId());
	312	about += "\n";
	313	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.";
	314	QMessageBox(QMessageBox::Information,"About",about,QMessageBox::Ok,this).exec();
[17]	315	}
	316
[50]	317	void MainWindow::buttonBackToTaskClicked()
	318	{
	319	tabWidget->setCurrentIndex(0);
	320	}
	321
[67]	322	void MainWindow::buttonRandomClicked()
[42]	323	{
[67]	324	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
	325	tspmodel->randomize();
	326	QApplication::restoreOverrideCursor();
[42]	327	}
	328
[29]	329	void MainWindow::buttonSolveClicked()
[6]	330	{
[13]	331	tMatrix matrix;
[42]	332	QList<double> row;
[15]	333	int n = spinCities->value();
[13]	334	bool ok;
[15]	335	for (int r = 0; r < n; r++) {
[42]	336	row.clear();
[15]	337	for (int c = 0; c < n; c++) {
[42]	338	row.append(tspmodel->index(r,c).data(Qt::UserRole).toDouble(&ok));
[15]	339	if (!ok) {
[47]	340	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]	341	return;
[13]	342	}
	343	}
	344	matrix.append(row);
	345	}
	346	CTSPSolver solver;
[50]	347	sStep *root = solver.solve(n,matrix,this);
[13]	348	if (!root)
[42]	349	return;
	350	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
	351	QColor color = settings->value("Output/Color",DEF_FONT_COLOR).value<QColor>();
	352	output.clear();
	353	output.append("<p>" + trUtf8("Variant #%1").arg(spinVariant->value()) + "</p>");
	354	output.append("<p>" + trUtf8("Task:") + "</p>");
	355	outputMatrix(matrix,output);
	356	output.append("<hr>");
	357	output.append("<p>" + trUtf8("Solution of Variant #%1 task").arg(spinVariant->value()) + "</p>");
	358	sStep *step = root;
	359	n = 1;
	360	while (n <= spinCities->value()) {
	361	if (step->prNode->prNode != NULL \|\| (step->prNode->prNode == NULL && step->plNode->prNode == NULL)) {
	362	if (n != spinCities->value()) {
	363	output.append("<p>" + trUtf8("Step #%1").arg(n++) + "</p>");
	364	outputMatrix(step->matrix,output,step->candidate.nRow,step->candidate.nCol);
	365	if (step->alts)
	366	output.append("<p class=\"hasalts\">" + trUtf8("This step has alternate candidates for branching.") + "</p>");
	367	output.append("<p> </p>");
	368	}
	369	}
	370	if (step->prNode->prNode != NULL)
	371	step = step->prNode;
	372	else if (step->plNode->prNode != NULL)
	373	step = step->plNode;
	374	else
	375	break;
	376	}
[60]	377	if (solver.isOptimal())
	378	output.append("<p>" + trUtf8("Optimal path:") + "</p>");
	379	else
	380	output.append("<p>" + trUtf8("Resulting path:") + "</p>");
	381	output.append("<p>  " + solver.getSortedPath() + "</p>");
[42]	382	output.append("<p>" + trUtf8("The price is <b>%1</b> units.").arg(step->price) + "</p>");
[60]	383	if (!solver.isOptimal()) {
	384	output.append("<p> </p>");
	385	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>");
	386	}
[65]	387	output.append("<p></p>");
[42]	388	solutionText->setHtml(output.join(""));
	389	solutionText->setDocumentTitle(trUtf8("Solution of Variant #%1 task").arg(spinVariant->value()));
[65]	390
	391	// Scrolling to the end of text.
	392	QTextCursor cursor(solutionText->textCursor());
	393	cursor.movePosition(QTextCursor::End, QTextCursor::MoveAnchor);
	394	solutionText->setTextCursor(cursor);
	395
[42]	396	enableSolutionActions();
	397	tabWidget->setCurrentIndex(1);
	398	QApplication::restoreOverrideCursor();
[6]	399	}
[21]	400
[67]	401	void MainWindow::dataChanged()
[21]	402	{
[67]	403	setWindowModified(true);
[21]	404	}
	405
[67]	406	void MainWindow::dataChanged(const QModelIndex &tl, const QModelIndex &br)
	407	{
	408	setWindowModified(true);
	409	if (settings->value("Autosize",true).toBool()) {
	410	for (int k = tl.row(); k <= br.row(); k++)
	411	taskView->resizeRowToContents(k);
	412	for (int k = tl.column(); k <= br.column(); k++)
	413	taskView->resizeColumnToContents(k);
	414	}
	415	}
	416
	417	void MainWindow::numCitiesChanged(int nCities)
	418	{
	419	blockSignals(true);
	420	spinCities->setValue(nCities);
	421	blockSignals(false);
	422	}
	423
	424	#ifndef QT_NO_PRINTER
	425	void MainWindow::printPreview(QPrinter *printer)
	426	{
	427	solutionText->print(printer);
	428	}
	429	#endif // QT_NO_PRINTER
	430
	431	void MainWindow::spinCitiesValueChanged(int n)
	432	{
	433	int count = tspmodel->numCities();
	434	tspmodel->setNumCities(n);
	435	if ((n > count) && settings->value("Autosize",true).toBool())
	436	for (int k = count; k < n; k++) {
	437	taskView->resizeColumnToContents(k);
	438	taskView->resizeRowToContents(k);
	439	}
	440	}
	441
[69]	442	void MainWindow::closeEvent(QCloseEvent *event)
	443	{
	444	if (!maybeSave()) {
	445	event->ignore();
	446	return;
	447	}
	448	settings->setValue("NumCities",spinCities->value());
	449	#ifndef Q_OS_WINCE
	450	// Saving windows state
	451	if (settings->value("SavePos",false).toBool()) {
	452	settings->beginGroup("MainWindow");
	453	settings->setValue("Maximized",isMaximized());
	454	if (!isMaximized()) {
	455	settings->setValue("Size",size());
	456	settings->setValue("Position",pos());
	457	}
	458	settings->endGroup();
	459	}
	460	#endif // Q_OS_WINCE
	461	QMainWindow::closeEvent(event);
	462	}
	463
[67]	464	void MainWindow::enableSolutionActions(bool enable)
	465	{
	466	buttonSaveSolution->setEnabled(enable);
	467	actionFileSaveAsSolution->setEnabled(enable);
	468	solutionText->setEnabled(enable);
	469	if (!enable)
	470	output.clear();
	471	#ifndef QT_NO_PRINTER
	472	actionFilePrint->setEnabled(enable);
	473	actionFilePrintPreview->setEnabled(enable);
	474	#endif // QT_NO_PRINTER
	475	}
	476
	477	void MainWindow::initDocStyleSheet()
	478	{
	479	QColor color = settings->value("Output/Color",DEF_FONT_COLOR).value<QColor>();
	480	QColor hilight;
	481	if (color.value() < 192)
	482	hilight.setHsv(color.hue(),color.saturation(),127 + qRound(color.value() / 2));
	483	else
	484	hilight.setHsv(color.hue(),color.saturation(),color.value() / 2);
	485	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;}");
	486	solutionText->document()->setDefaultFont(settings->value("Output/Font",QFont(DEF_FONT_FAMILY,DEF_FONT_SIZE)).value<QFont>());
	487	}
	488
[29]	489	void MainWindow::loadLangList()
	490	{
[57]	491	QSettings langinfo(PATH_I18N"/languages.ini",QSettings::IniFormat);
[33]	492	#if QT_VERSION >= 0x040500
	493	// In Qt < 4.5 QSettings doesn't have method setIniCodec.
[29]	494	langinfo.setIniCodec("UTF-8");
[33]	495	#endif
[57]	496	QDir dir(PATH_I18N,"*.qm",QDir::Name \| QDir::IgnoreCase,QDir::Files);
[29]	497	if (!dir.exists())
	498	return;
	499	QFileInfoList langs = dir.entryInfoList();
	500	if (langs.size() <= 0)
	501	return;
	502	QAction *a;
	503	for (int k = 0; k < langs.size(); k++) {
	504	QFileInfo lang = langs.at(k);
[30]	505	if (!lang.completeBaseName().startsWith("qt_") && lang.completeBaseName().compare("en")) {
[33]	506	#if QT_VERSION >= 0x040500
[29]	507	a = menuSettingsLanguage->addAction(langinfo.value(lang.completeBaseName() + "/NativeName",lang.completeBaseName()).toString());
[33]	508	#else
	509	// We use Name if Qt < 4.5 because NativeName is in UTF-8, QSettings
	510	// reads .ini file as ASCII and there is no way to set file encoding.
	511	a = menuSettingsLanguage->addAction(langinfo.value(lang.completeBaseName() + "/Name",lang.completeBaseName()).toString());
	512	#endif
[29]	513	a->setData(lang.completeBaseName());
	514	a->setCheckable(true);
	515	a->setActionGroup(groupSettingsLanguageList);
	516	if (settings->value("Language",QLocale::system().name()).toString().startsWith(lang.completeBaseName()))
	517	a->setChecked(true);
	518	}
	519	}
	520	}
	521
[67]	522	bool MainWindow::loadLanguage(QString lang)
[29]	523	{
[67]	524	// i18n
	525	bool ad = false;
	526	if (lang.isEmpty()) {
	527	ad = settings->value("Language","").toString().isEmpty();
	528	lang = settings->value("Language",QLocale::system().name()).toString();
[29]	529	}
[67]	530	static QTranslator *qtTranslator; // Qt library translator
	531	if (qtTranslator) {
	532	qApp->removeTranslator(qtTranslator);
	533	delete qtTranslator;
	534	qtTranslator = NULL;
[29]	535	}
[67]	536	qtTranslator = new QTranslator();
	537	static QTranslator *translator; // Application translator
	538	if (translator) {
	539	qApp->removeTranslator(translator);
	540	delete translator;
[37]	541	}
[67]	542	translator = new QTranslator();
	543	if (lang.compare("en") && !lang.startsWith("en_")) {
	544	// Trying to load system Qt library translation...
	545	if (qtTranslator->load("qt_" + lang,QLibraryInfo::location(QLibraryInfo::TranslationsPath)))
	546	qApp->installTranslator(qtTranslator);
	547	else
	548	// No luck. Let's try to load bundled one.
	549	if (qtTranslator->load("qt_" + lang,PATH_I18N))
	550	qApp->installTranslator(qtTranslator);
	551	else {
	552	// Qt library translation unavailable
	553	delete qtTranslator;
	554	qtTranslator = NULL;
	555	}
	556	// Now let's load application translation.
	557	if (translator->load(lang,PATH_I18N))
	558	qApp->installTranslator(translator);
	559	else {
	560	if (!ad)
	561	QMessageBox(QMessageBox::Warning,trUtf8("Language Change"),trUtf8("Unable to load translation language."),QMessageBox::Ok,this).exec();
	562	delete translator;
	563	translator = NULL;
	564	return false;
[21]	565	}
	566	}
[67]	567	return true;
[21]	568	}
[31]	569
[67]	570	bool MainWindow::maybeSave()
[37]	571	{
[67]	572	if (!isWindowModified())
	573	return true;
	574	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();
	575	if (res == QMessageBox::Save)
	576	return saveTask();
	577	else if (res == QMessageBox::Cancel)
	578	return false;
	579	else
	580	return true;
[37]	581	}
	582
[67]	583	void MainWindow::outputMatrix(tMatrix matrix, QStringList &output, int nRow, int nCol)
[57]	584	{
[67]	585	int n = spinCities->value();
	586	QString line="";
	587	output.append("<table border=\"0\" cellspacing=\"0\" cellpadding=\"0\">");
	588	for (int r = 0; r < n; r++) {
	589	line = "<tr>";
	590	for (int c = 0; c < n; c++) {
	591	if (matrix[r][c] == INFINITY)
	592	line += "<td align=\"center\">"INFSTR"</td>";
	593	else if ((r == nRow) && (c == nCol))
	594	line += "<td align=\"center\" class=\"selected\">" + QVariant(matrix[r][c]).toString() + "</td>";
	595	else
	596	line += "<td align=\"center\">" + QVariant(matrix[r][c]).toString() + "</td>";
	597	}
	598	line += "</tr>";
	599	output.append(line);
[57]	600	}
[67]	601	output.append("</table>");
[57]	602	}
	603
[67]	604	bool MainWindow::saveTask() {
	605	QFileDialog sd(this);
	606	sd.setAcceptMode(QFileDialog::AcceptSave);
	607	QStringList filters(trUtf8("%1 Task File").arg("TSPSG") + " (*.tspt)");
	608	filters.append(trUtf8("All Files") + " (*)");
	609	sd.setNameFilters(filters);
	610	sd.setDefaultSuffix("tspt");
	611	if (fileName.endsWith(".tspt",Qt::CaseInsensitive))
	612	sd.selectFile(fileName);
	613	else
	614	sd.selectFile(QFileInfo(fileName).canonicalPath() + "/" + QFileInfo(fileName).completeBaseName() + ".tspt");
	615	if (sd.exec() != QDialog::Accepted)
	616	return false;
	617	QStringList files = sd.selectedFiles();
	618	if (files.empty())
	619	return false;
	620	if (tspmodel->saveTask(files.first())) {
	621	setFileName(files.first());
	622	setWindowModified(false);
	623	return true;
	624	}
	625	return false;
	626	}
	627
	628	void MainWindow::setFileName(QString fileName)
[31]	629	{
[67]	630	this->fileName = fileName;
	631	setWindowTitle(QString("%1[*] - %2").arg(QFileInfo(fileName).completeBaseName()).arg(trUtf8("Travelling Salesman Problem")));
[31]	632	}

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