#include "notepadwindow.h"
#include "ui_notepadwindow.h"
#include <QFileDialog>
#include <QComboBox>
#include <QtPrintSupport/QPrinter>
#include <QtPrintSupport/QPrintDialog>
#include <QPainter>
#include <QLineEdit>
#include <QTextCharFormat>

NotepadWindow::NotepadWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::NotepadWindow)
  
{
    ui->setupUi(this);
    ui->actionBold->setCheckable(true);
    ui->actionItalics->setCheckable(true);
    ui->actionUnderline->setCheckable(true);
    ui->actionLeft->setCheckable(true);
    ui->actionRight->setCheckable(true);
    ui->actionCenter->setCheckable(true);
    ui->actionJustify->setCheckable(true);
    this->setCentralWidget(ui->textEdit); // Wyśrodkuj Pole tekstowe
    QComboBox* myComboBox = new QComboBox;
    ui->mainToolBar->addWidget(myComboBox);
    for (int i = 1; i < 102; i += 2) {
        myComboBox->addItem(QString::number(i));
    }
    myComboBox->setCurrentText("11");
    ui->textEdit->setFontPointSize(11);
    ui->actionLeft->setChecked(true);
    ui->actionRight->setChecked(false);
    ui->actionCenter->setChecked(false);
    ui->actionJustify->setChecked(false);
    QObject::connect(myComboBox, SIGNAL(currentTextChanged(QString)), this, SLOT(onFontSizeChanged(QString)));
    connect(ui->textEdit, SIGNAL(cursorPositionChanged()), this, SLOT(changeCursorPosPointSize()));
    m_actualPointSize = myComboBox->currentText().toInt();
}


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

void NotepadWindow::changeCursorPosPointSize()
{
    QTextCharFormat format;
    format.setFontPointSize(m_actualPointSize); // Put the variable that is associated with
    ui->textEdit->mergeCurrentCharFormat(format);
}

void NotepadWindow::onFontSizeChanged(QString selected)
{
    m_actualPointSize = selected.toInt();
    ui->textEdit->setFontPointSize(m_actualPointSize);
}

void NotepadWindow::openfile(QString textfile)
{
    QFile sFile(textfile);
    if(sFile.open(QFile::ReadOnly | QFile::Text)) // Jeśli plik jest otwarty
    {
        mFilename = textfile;
        QTextStream in(&sFile);
        in.setCodec("UTF-8"); // Ustaw kodowania znaków na UTF-8
        QString text = in.readAll();
        sFile.close();
        ui->textEdit->setHtml(text);
    }
}

void NotepadWindow::on_actionUndo_triggered()
{
    ui->textEdit->undo();
}

void NotepadWindow::on_actionRedo_triggered()
{
    ui->textEdit->redo();
}

void NotepadWindow::on_actionCut_triggered()
{
    ui->textEdit->cut();
}

void NotepadWindow::on_actionCopy_triggered()
{
    ui->textEdit->copy();
}

void NotepadWindow::on_actionPaste_triggered()
{
    ui->textEdit->paste();
}

void NotepadWindow::on_actionNew_triggered()
{
    mFilename = "";
    ui->textEdit->setPlainText("");
}

void NotepadWindow::on_actionOpen_triggered()
{
    QString file = QFileDialog::getOpenFileName(this, "open"); // Otwórz okienko wyboru plików
    if(!file.isEmpty())        // Jeśli plik nie jest pusty
    {
        QFile sFile(file);
        if(sFile.open(QFile::ReadOnly | QFile::Text)) // Jeśli plik jest otwarty
        {
            mFilename = file;
            QTextStream in(&sFile);
            in.setCodec("UTF-8"); // Ustaw kodowania znaków na UTF-8
            QString text = in.readAll();
            sFile.close();
            ui->textEdit->setHtml(text);
        }
    }
}

void NotepadWindow::on_actionSave_triggered()
{
    QFile sFile(mFilename);
    if(sFile.open(QFile::WriteOnly | QFile::Text)) // Jeśli plik jest otwarty
    {
        QTextStream out(&sFile);
        out << ui->textEdit->toHtml();
        out.setCodec("UTF-8"); // Ustaw kodowania znaków na UTF-8
        sFile.flush();
        sFile.close();
        
    }
    else if(!sFile.open(QFile::WriteOnly | QFile::Text)) on_actionSave_as_triggered();
}

void NotepadWindow::on_actionSave_as_triggered()
{
    QString file = QFileDialog::getSaveFileName(this,  tr("Text File"), "", tr("Text files (*.txt)"));
    if(!file.isEmpty())
    {
        mFilename = file;
        on_actionSave_triggered();
    }
}




void NotepadWindow::on_actionBold_triggered(bool checked)
{
    if(checked)
    {
        ui->textEdit->setFontWeight(QFont::Bold);
    }
    if(!checked)
    {
        ui->textEdit->setFontWeight(QFont::Normal);
    }
    
}

void NotepadWindow::on_actionItalics_triggered(bool checked)
{
    if(checked)
    {
        ui->textEdit->setFontItalic(1);
    }
    if(!checked)
    {
        ui->textEdit->setFontItalic(0);
    }
    
}

void NotepadWindow::on_actionUnderline_triggered(bool checked)
{
    if(checked)
    {
        ui->textEdit->setFontUnderline(1);
    }
    if(!checked)
    {
        ui->textEdit->setFontUnderline(0);
    }
    
}

void NotepadWindow::on_actionLeft_triggered()
{
    ui->textEdit->setAlignment(Qt::AlignLeft);
    ui->actionLeft->setChecked(true);
    ui->actionRight->setChecked(false);
    ui->actionCenter->setChecked(false);
    ui->actionJustify->setChecked(false);
}

void NotepadWindow::on_actionCenter_triggered()
{
    ui->textEdit->setAlignment(Qt::AlignCenter);
    ui->actionLeft->setChecked(false);
    ui->actionRight->setChecked(false);
    ui->actionCenter->setChecked(true);
    ui->actionJustify->setChecked(false);
}

void NotepadWindow::on_actionRight_triggered()
{
    ui->textEdit->setAlignment(Qt::AlignRight);
    ui->actionLeft->setChecked(false);
    ui->actionRight->setChecked(true);
    ui->actionCenter->setChecked(false);
    ui->actionJustify->setChecked(false);
}

void NotepadWindow::on_actionJustify_triggered()
{
    ui->textEdit->setAlignment(Qt::AlignJustify);
    ui->actionLeft->setChecked(false);
    ui->actionRight->setChecked(false);
    ui->actionCenter->setChecked(false);
    ui->actionJustify->setChecked(true);
}
void NotepadWindow::on_actionPrint_triggered()
{
    
    QPrinter printer;
    printer.setPageSizeMM(QSize(210, 297));
    
    QPrintDialog *dialog = new QPrintDialog(&printer);
    dialog->setWindowTitle("Print Document");
    
    QPainter painter;
    painter.begin(&printer);
    
    QTextDocument td;
    QSize size(793.7007874016, 1122.519685039);
    td.setPageSize(size);
    td.setHtml(ui->textEdit->toHtml());
    td.drawContents(&painter);
    //painter.drawText(printer.pageRect(), ui->textEdit->toPlainText());
    
    painter.end();
}