Notepad/notepad.cpp at main · guillaume-gonnet/Notepad · GitHub

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#include "notepad.h"
#include "./ui_notepad.h"
#include <QFileDialog>
#include <QMessageBox>
#include <QTextStream>
#include <QPrinter>
#include <QPrintDialog>
#include <QFontDialog>
#include <QtPrintSupport/qtprintsupportglobal.h>

Notepad::Notepad(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::Notepad)
{
    ui->setupUi(this);
    connect(ui->actionOpen, &QAction::triggered, this, &Notepad::open);
}

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

void Notepad::on_actionNew_triggered()
{
    currentFile.clear();
    ui->textEdit->setText(QString());
}

void Notepad::open()
{
    QString fileName = QFileDialog::getOpenFileName(this, "Open the file");
    if(fileName.isEmpty())
        return;
    QFile file(fileName);
    currentFile=fileName;
    if(!file.open(QIODevice::ReadOnly | QFile::Text))
    {
        QMessageBox::warning(this,"Warning","Cannot open file"+file.errorString());
        return;
    }
    setWindowTitle(fileName);
    QTextStream in(&file);
    QString text = in.readAll();
    ui->textEdit->setText(text);
    file.close();
}

void Notepad::on_actionSave_triggered()
{
    QString fileName;
    if(currentFile.isEmpty()){
        fileName = QFileDialog::getSaveFileName(this,"Save");
        if(fileName.isEmpty())
            return;
        currentFile = fileName;
    } else {
        fileName = currentFile;
    }
    QFile file(fileName);
    if(!file.open(QIODevice::ReadOnly | QFile::Text))
    {
        QMessageBox::warning(this,"Warning","cannot save file"+file.errorString());
        return;
    }
    setWindowTitle(fileName);
    QTextStream out(&file);
    QString text = ui->textEdit->toPlainText();
    out << text;
    file.close();
}


void Notepad::on_actionSave_As_triggered()
{
    QString fileName = QFileDialog::getSaveFileName(this,"Save as");
        if(fileName.isEmpty())
            return;
    QFile file(fileName);

    if(!file.open(QIODevice::WriteOnly | QFile::Text))
    {
        QMessageBox::warning(this,"Warning","cannot save file"+file.errorString());
        return;
    }
    currentFile = fileName;
    setWindowTitle(fileName);
    QTextStream out(&file);
    QString text = ui->textEdit->toPlainText();
    out << text;
    file.close();
}


void Notepad::on_actionPrint_triggered()
{
#if defined(QT_PRINTSUPPORT_LIB) && QT_CONFIG(printer)
    QPrinter printDev;
#if QT_CONFIG(printdialog)
    QPrintDialog dialog(&printDev, this);
    if(dialog.exec() == QDialog::Rejected)
        return;
#endif // QT_CONFIG(printDialog)
    ui->textEdit->print(&printDev);
#endif // QT_CONFIG(printer)
}


void Notepad::on_actionFont_triggered()
{
    bool fontSelected;
    QFont font = QFontDialog::getFont(&fontSelected,this);
    if(fontSelected)
        ui->textEdit->setFont(font);
}


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