source: tspsg-svn/trunk/src/mainwindow.cpp @ 39

/*
 *  TSPSG - TSP Solver and Generator
 *  Copyright (C) 2007-2009 Lёppa <contacts[at]oleksii[dot]name>
 *
 *  $Id: mainwindow.cpp 38 2009-07-20 18:47:40Z laleppa $
 *  $URL: https://tspsg.svn.sourceforge.net/svnroot/tspsg/trunk/src/mainwindow.cpp $
 *
 *  This file is part of TSPSG.
 *
 *  TSPSG is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  TSPSG is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with TSPSG.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "mainwindow.h"

MainWindow::MainWindow(QWidget *parent)
        : QMainWindow(parent)
{
        settings = new QSettings(QSettings::IniFormat,QSettings::UserScope,"TSPSG","tspsg");
        loadLanguage();
        setupUi(this);
#ifdef Q_OS_WINCE
        // A little hack for toolbar icons to have sane size.
int s = qMin(QApplication::desktop()->screenGeometry().width(),QApplication::desktop()->screenGeometry().height());
        toolBar->setIconSize(QSize(s / 10,s / 10));
#endif
#ifndef Q_OS_WINCE
        printer = new QPrinter();
#endif // Q_OS_WINCE
        groupSettingsLanguageList = new QActionGroup(this);
        actionSettingsLanguageEnglish->setData("en");
        actionSettingsLanguageEnglish->setActionGroup(groupSettingsLanguageList);
        loadLangList();
        spinCities->setValue(settings->value("NumCities",5).toInt());
        actionSettingsLanguageAutodetect->setChecked(settings->value("Language","").toString().isEmpty());
        connect(actionFileNew,SIGNAL(triggered()),this,SLOT(actionFileNewTriggered()));
        connect(actionFileOpen,SIGNAL(triggered()),this,SLOT(actionFileOpenTriggered()));
        connect(actionFileSaveTask,SIGNAL(triggered()),this,SLOT(actionFileSaveTaskTriggered()));
        connect(actionSettingsPreferences,SIGNAL(triggered()),this,SLOT(actionSettingsPreferencesTriggered()));
        connect(actionSettingsLanguageAutodetect,SIGNAL(triggered(bool)),this,SLOT(actionSettingsLanguageAutodetectTriggered(bool)));
        connect(groupSettingsLanguageList,SIGNAL(triggered(QAction *)),this,SLOT(groupSettingsLanguageListTriggered(QAction *)));
        connect(actionHelpAboutQt,SIGNAL(triggered()),qApp,SLOT(aboutQt()));
        connect(actionHelpAbout,SIGNAL(triggered()),this,SLOT(actionHelpAboutTriggered()));
#ifndef Q_OS_WINCE
        connect(actionFilePrintSetup,SIGNAL(triggered()),this,SLOT(actionFilePrintSetupTriggered()));
#endif // Q_OS_WINCE
        connect(buttonSolve,SIGNAL(clicked()),this,SLOT(buttonSolveClicked()));
        connect(buttonRandom,SIGNAL(clicked()),this,SLOT(buttonRandomClicked()));
        connect(spinCities,SIGNAL(valueChanged(int)),this,SLOT(spinCitiesValueChanged(int)));
QRect rect = geometry();
#ifdef Q_OS_WINCE
        // HACK: Fix for all tabWidget elements becoming "unclickable" if making it central widget.
/*      rect.setSize(QApplication::desktop()->availableGeometry().size());
        rect.setHeight(rect.height() - (QApplication::desktop()->screenGeometry().height() - QApplication::desktop()->availableGeometry().height()));
        tabWidget->resize(rect.width(),rect.height() - toolBar->iconSize().height());*/
        // Somehow, this works now. No more "unclickable" elements :-\ 
        setCentralWidget(tabWidget);
#else
        if (settings->value("SavePos",false).toBool()) {
                // Loading of saved window state
                settings->beginGroup("MainWindow");
                resize(settings->value("Size",size()).toSize());
                move(settings->value("Position",pos()).toPoint());
                if (settings->value("Maximized",false).toBool())
                        setWindowState(windowState() | Qt::WindowMaximized);
                settings->endGroup();
        } else {
                // Centering main window
                rect.moveCenter(QApplication::desktop()->availableGeometry(this).center());
                setGeometry(rect);
        }
#endif // Q_OS_WINCE
        qsrand(QDateTime().currentDateTime().toTime_t());
        tspmodel = new CTSPModel();
        tspmodel->setNumCities(spinCities->value());
        taskView->setModel(tspmodel);
        connect(tspmodel,SIGNAL(numCitiesChanged(int)),this,SLOT(numCitiesChanged(int)));
        connect(tspmodel,SIGNAL(dataChanged(const QModelIndex &, const QModelIndex &)),this,SLOT(dataChanged()));
        connect(tspmodel,SIGNAL(layoutChanged()),this,SLOT(dataChanged()));
#ifdef Q_OS_WINCE
        taskView->resizeColumnsToContents();
        taskView->resizeRowsToContents();
#endif // Q_OS_WINCE
}

bool MainWindow::loadLanguage(QString lang)
{
// i18n
bool ad = false;
        if (lang.isEmpty()) {
                ad = settings->value("Language","").toString().isEmpty();
                lang = settings->value("Language",QLocale::system().name()).toString();
        }
static QTranslator *qtTranslator;
        if (qtTranslator) {
                qApp->removeTranslator(qtTranslator);
                delete qtTranslator;
                qtTranslator = NULL;
        }
        qtTranslator = new QTranslator();
static QTranslator *translator;
        if (translator) {
                qApp->removeTranslator(translator);
                delete translator;
        }
        translator = new QTranslator();
        if (lang.compare("en") && !lang.startsWith("en_")) {
                // Trying to load system Qt library translation...
                if (qtTranslator->load("qt_" + lang,QLibraryInfo::location(QLibraryInfo::TranslationsPath)))
                        qApp->installTranslator(qtTranslator);
                else
                        // No luck. Let's try to load bundled one.
                        if (qtTranslator->load("qt_" + lang,"i18n"))
                                qApp->installTranslator(qtTranslator);
                        else {
                                delete qtTranslator;
                                qtTranslator = NULL;
                        }
                // Now let's load application translation.
                if (translator->load(lang,"i18n"))
                        qApp->installTranslator(translator);
                else {
                        if (!ad)
                                QMessageBox(QMessageBox::Warning,trUtf8("Language change"),trUtf8("Unable to load translation language."),QMessageBox::Ok,this).exec();
                        delete translator;
                        translator = NULL;
                        return false;
                }
        }
        return true;
}

void MainWindow::spinCitiesValueChanged(int n)
{
#ifdef Q_OS_WINCE
int count = tspmodel->numCities();
#endif // Q_OS_WINCE
        tspmodel->setNumCities(n);
#ifdef Q_OS_WINCE
        if (n > count)
                for (int k = count; k < n; k++) {
                        taskView->resizeColumnToContents(k);
                        taskView->resizeRowToContents(k);
                }
#endif // Q_OS_WINCE
}


void MainWindow::actionFileNewTriggered()
{
        if (isWindowModified()) {
int res = QMessageBox(QMessageBox::Warning,trUtf8("New Task"),trUtf8("Would you like to save changes in current task?"),QMessageBox::Yes | QMessageBox::No | QMessageBox::Cancel,this).exec();
                if ((res == QMessageBox::Cancel) || ((res == QMessageBox::Yes) && !saveTask()))
                        return;
        }
        tspmodel->clear();
        setWindowModified(false);
}

void MainWindow::actionFileOpenTriggered()
{
        if (isWindowModified()) {
int res = QMessageBox(QMessageBox::Warning,trUtf8("Task Open"),trUtf8("Would you like to save changes in current task?"),QMessageBox::Yes | QMessageBox::No | QMessageBox::Cancel,this).exec();
                if ((res == QMessageBox::Cancel) || ((res == QMessageBox::Yes) && !saveTask()))
                        return;
        }
QFileDialog od(this);
        od.setAcceptMode(QFileDialog::AcceptOpen);
        od.setFileMode(QFileDialog::ExistingFile);
QStringList filters(trUtf8("All Supported Formats") + " (*.tspt *.zkt)");
        filters.append(QString(trUtf8("%1 Task Files")).arg("TSPSG") + " (*.tspt)");
        filters.append(QString(trUtf8("%1 Task Files")).arg("ZKomModRd") + " (*.zkt)");
        filters.append(trUtf8("All Files") + " (*)");
        od.setNameFilters(filters);
        if (od.exec() != QDialog::Accepted)
                return;
QStringList files = od.selectedFiles();
        if (files.size() < 1)
                return;
        tspmodel->loadTask(files.first());
        setWindowModified(false);
}

void MainWindow::actionFileSaveTaskTriggered()
{
        saveTask();
}

bool MainWindow::saveTask() {
QFileDialog sd(this);
        sd.setAcceptMode(QFileDialog::AcceptSave);
QStringList filters(QString(trUtf8("%1 Task File")).arg("TSPSG") + " (*.tspt)");
        filters.append(trUtf8("All Files") + " (*)");
        sd.setNameFilters(filters);
        sd.setDefaultSuffix("tspt");
        if (sd.exec() != QDialog::Accepted)
                return false;
QStringList files = sd.selectedFiles();
        if (files.size() < 1)
                return false;
        if (tspmodel->saveTask(files.first())) {
                setWindowModified(false);
                return true;
        } else
                return false;
}

void MainWindow::actionSettingsPreferencesTriggered()
{
SettingsDialog sd(this);
        sd.exec();
}

#ifndef Q_OS_WINCE
void MainWindow::actionFilePrintSetupTriggered()
{
QPrintDialog pd(printer,this);
#if QT_VERSION >= 0x040500
        // No such methods in Qt < 4.5
        pd.setOption(QAbstractPrintDialog::PrintSelection,false);
        pd.setOption(QAbstractPrintDialog::PrintPageRange,false);
#endif
        pd.exec();
}
#endif // Q_OS_WINCE

void MainWindow::buttonRandomClicked()
{
        tspmodel->randomize();
        setWindowModified(true);
#ifdef Q_OS_WINCE
        taskView->resizeColumnsToContents();
        taskView->resizeRowsToContents();
#endif // Q_OS_WINCE
}

void MainWindow::buttonSolveClicked()
{
        // TODO: Task solving goes here :-)
tMatrix matrix;
double *row;
int n = spinCities->value();
bool ok;
        for (int r = 0; r < n; r++) {
                row = new double[n];
                for (int c = 0; c < n; c++) {
                        row[c] = tspmodel->index(r,c).data(Qt::UserRole).toDouble(&ok);
                        if (!ok) {
                                QMessageBox(QMessageBox::Critical,trUtf8("Data error"),QString(trUtf8("Error in cell [Row %1; Column %2]: Invalid data format.")).arg(r + 1).arg(c + 1),QMessageBox::Ok,this).exec();
                                return;
                        }
                }
                matrix.append(row);
        }
CTSPSolver solver;
sStep *root = solver.solve(spinCities->value(),matrix);
        if (!root)
                QMessageBox(QMessageBox::Critical,trUtf8("Solution error"),trUtf8("There was an error while solving the task."),QMessageBox::Ok,this).exec();
        // tabWidget->setCurrentIndex(1);
}

void MainWindow::actionHelpAboutTriggered()
{
        // TODO: Normal about window :-)
QString about = QString::fromUtf8("TSPSG - TSP Solver and Generator\n");
about += QString::fromUtf8("    Copyright (C) 2007-%1 Lёppa <contacts[at]oleksii[dot]name>\n").arg(QDate::currentDate().toString("yyyy"));
        about += QString::fromUtf8("Target OS: %1\n").arg(OS);
        about += "Qt library:\n";
        about += QString::fromUtf8("    Compile time: %1\n").arg(QT_VERSION_STR);
        about += QString::fromUtf8("    Runtime: %1\n").arg(qVersion());
        about += "\n";
        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.";
        QMessageBox(QMessageBox::Information,"About",about,QMessageBox::Ok,this).exec();
}

void MainWindow::loadLangList()
{
QSettings langinfo("i18n/languages.ini",QSettings::IniFormat);
#if QT_VERSION >= 0x040500
        // In Qt < 4.5 QSettings doesn't have method setIniCodec.
        langinfo.setIniCodec("UTF-8");
#endif
QDir dir("i18n","*.qm",QDir::Name | QDir::IgnoreCase,QDir::Files);
        if (!dir.exists())
                return;
QFileInfoList langs = dir.entryInfoList();
        if (langs.size() <= 0)
                return;
QAction *a;
        for (int k = 0; k < langs.size(); k++) {
                QFileInfo lang = langs.at(k);
                if (!lang.completeBaseName().startsWith("qt_") && lang.completeBaseName().compare("en")) {
#if QT_VERSION >= 0x040500
                        a = menuSettingsLanguage->addAction(langinfo.value(lang.completeBaseName() + "/NativeName",lang.completeBaseName()).toString());
#else
                        // We use Name if Qt < 4.5 because NativeName is in UTF-8, QSettings
                        // reads .ini file as ASCII and there is no way to set file encoding.
                        a = menuSettingsLanguage->addAction(langinfo.value(lang.completeBaseName() + "/Name",lang.completeBaseName()).toString());
#endif
                        a->setData(lang.completeBaseName());
                        a->setCheckable(true);
                        a->setActionGroup(groupSettingsLanguageList);
                        if (settings->value("Language",QLocale::system().name()).toString().startsWith(lang.completeBaseName()))
                                a->setChecked(true);
                }
        }
}

void MainWindow::actionSettingsLanguageAutodetectTriggered(bool checked)
{
        if (checked) {
                settings->remove("Language");
                QMessageBox(QMessageBox::Information,trUtf8("Language change"),trUtf8("Language will be autodetected on next application start."),QMessageBox::Ok,this).exec();
        } else
                settings->setValue("Language",groupSettingsLanguageList->checkedAction()->data().toString());
}

void MainWindow::groupSettingsLanguageListTriggered(QAction *action)
{
        if (actionSettingsLanguageAutodetect->isChecked()) {
                // We have language autodetection. It needs to be disabled to change language.
                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) {
                        actionSettingsLanguageAutodetect->trigger();
                } else
                        return;
        }
        if (loadLanguage(action->data().toString())) {
                settings->setValue("Language",action->data().toString());
                retranslateUi(this);
        }
}

void MainWindow::closeEvent(QCloseEvent *event)
{
        if (isWindowModified()) {
int res = QMessageBox(QMessageBox::Warning,trUtf8("Application Close"),trUtf8("Would you like to save changes in current task?"),QMessageBox::Yes | QMessageBox::No | QMessageBox::Cancel,this).exec();
                if ((res == QMessageBox::Cancel) || ((res == QMessageBox::Yes) && !saveTask())) {
                        event->ignore();
                        return;
                }
        }
        settings->setValue("NumCities",spinCities->value());
#ifndef Q_OS_WINCE
        // Saving windows state
        if (settings->value("SavePos",false).toBool()) {
                settings->beginGroup("MainWindow");
                settings->setValue("Maximized",isMaximized());
                if (!isMaximized()) {
                        settings->setValue("Size",size());
                        settings->setValue("Position",pos());
                }
                settings->endGroup();
        }
#endif // Q_OS_WINCE
        QMainWindow::closeEvent(event);
}

void MainWindow::dataChanged()
{
        setWindowModified(true);
}

void MainWindow::numCitiesChanged(int nCities)
{
        spinCities->setValue(nCities);
}