#include "mainwindow.h"
#include "ui_mainwindow.h"

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    lastUsedFile = NULL;
}

MainWindow::~MainWindow()
{
    delete ui;
}

/**
 * @brief MainWindow::on_actionPreferences_triggered
 * Creates a DlgPreferences Dialog and sets hight and width of the MainWindow.
 */
void MainWindow::on_actionPreferences_triggered()
{
    qDebug() << "Preferences called";
    DlgPreferences *tmp = new DlgPreferences(this);

    tmp->setHeight(size().height());
    tmp->setWidth(size().width());

    if (tmp->exec())
    {
        qDebug() << "DlgPreferences okay clicked.";

        int width = tmp->Width();
        int height = tmp->Height();

        if (width >= 100 && width <= 800 && height >= 100 && height <= 800)
        {
            qDebug() << "Resizing QMainWindow.";
            resize(width, height);
        }
    }

    delete tmp;
}

void MainWindow::on_actionLoad_triggered()
{
    QString fileName = QFileDialog::getOpenFileName(this, tr("Load an XML file"),
                       QStandardPaths::standardLocations(QStandardPaths::HomeLocation).at(0),
                       tr("XML File (*.xml *.Xml *.XML)"));

    if(lastUsedFile)
    {
        delete lastUsedFile;
        lastUsedFile = NULL;
    }

    lastUsedFile = new QFile(fileName);

    if (lastUsedFile->exists())
    {
        ui->interactionCanvasPlaceholder->read(lastUsedFile);
    }

    lastUsedFile->close();

}

void MainWindow::on_actionSave_triggered()
{
    if (!lastUsedFile)
    {
        on_actionSave_As_triggered();
    }

    lastUsedFile->open(QFile::ReadWrite | QFile::Truncate);

    ui->interactionCanvasPlaceholder->write(lastUsedFile);

    lastUsedFile->close();
}

void MainWindow::on_actionSave_As_triggered()
{
    QString fileName = QFileDialog::getSaveFileName(this, tr("Load an XML file"),
                       QStandardPaths::standardLocations(QStandardPaths::HomeLocation).at(0),
                       tr("XML File (*.xml *.Xml *.XML)"));

    if (lastUsedFile)
    {
        delete lastUsedFile;
        lastUsedFile = NULL;
    }

    lastUsedFile = new QFile(fileName);

    on_actionSave_triggered();
}

void MainWindow::on_actionLanguage_triggered()
{
    LanguageDialog *tmp = new LanguageDialog(this);

    if (QLocale::system().language() == QLocale::German)
    {
        tmp->setLanguage(1);
    }
    else
    {
        tmp->setLanguage(0);
    }

    if (tmp->exec())
    {
        switch (tmp->language())
        {
        case 0:
            qDebug() << "English";
            loadLanguage(":/english.qm");

            break;

        case 1:
            qDebug() << "German";
            loadLanguage(":/german.qm");

            break;
        }
    }
}

void MainWindow::on_actionDraw_Line_triggered()
{
    ui->interactionCanvasPlaceholder->addLine();
}

void MainWindow::on_actionDraw_Rectangle_triggered()
{
    ui->interactionCanvasPlaceholder->addRectangle();
}

void MainWindow::on_actionDraw_Ellipse_triggered()
{
    ui->interactionCanvasPlaceholder->addEllipse();
}

void MainWindow::on_actionDraw_Polygon_triggered()
{
    ui->interactionCanvasPlaceholder->addPolygon();
}

void MainWindow::mouseMoveEvent(QMouseEvent *mouseEvent)
{
    qDebug() << "MainWindow:" << mouseEvent->pos();
}

void MainWindow::loadLanguage(const QString &rLanguageFile)
{
    // remove the old translator
    qApp->removeTranslator(&m_translator);

    // load the new translator
    if (m_translator.load(rLanguageFile))
    {
        qApp->installTranslator(&m_translator);
    }
}

void MainWindow::changeEvent(QEvent *event)
{
    if (event != 0 && event->type() == QEvent::LanguageChange)
    {
        ui->retranslateUi(this);
    }

    QMainWindow::changeEvent(event);
}