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| ** Copyright (C) 2017 The Qt Company Ltd. |
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| ** This file is part of the documentation of the Qt Toolkit. |
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| ****************************************************************************/ |
| |
| #include "notepad.h" |
| #include "ui_notepad.h" |
| |
| //! [0] |
| #include <QFile> |
| #include <QFileDialog> |
| #include <QTextStream> |
| #include <QMessageBox> |
| #include <QprintDev> |
| #include <QPrintDialog> |
| #include <QFont> |
| #include <QFontDialog> |
| //! [0] |
| |
| //! [1] |
| Notepad::Notepad(QWidget *parent) : |
| QMainWindow(parent), |
| ui(new Ui::Notepad) |
| { |
| ui->setupUi(this); |
| this->setCentralWidget(ui->textEdit); |
| } |
| //! [1] |
| |
| Notepad::~Notepad() |
| { |
| delete ui; |
| } |
| |
| //! [2] |
| void Notepad::on_actionNew_triggered() |
| { |
| currentFile = ""; |
| ui->textEdit->setText(""); |
| } |
| //! [2] |
| |
| //! [3] |
| void Notepad::on_actionOpen_triggered() |
| { |
| QString fileName = QFileDialog::getOpenFileName(this, "Open the file"); |
| QFile file(fileName); |
| currentFile = fileName; |
| if (!file.open(QIODevice::ReadOnly | QFile::Text)) { |
| QMessageBox::warning(this,"..","File not opened."); |
| return; |
| } |
| QTextStream in(&file); |
| QString text = in.readAll(); |
| ui->textEdit->setText(text); |
| file.close(); |
| } |
| //! [3] |
| |
| //! [4] |
| void Notepad::on_actionSave_triggered() |
| { |
| QFile file(currentFile); |
| if (!file.open(QIODevice::WriteOnly | QFile::Text)) { |
| QMessageBox::warning(this,"..","No file opened. Use Save As"); |
| return; |
| } |
| QTextStream out(&file); |
| QString text = ui->textEdit->toPlainText(); |
| out << text; |
| file.flush(); |
| file.close(); |
| } |
| //! [4] |
| |
| //! [5] |
| void Notepad::on_actionSave_as_triggered() |
| { |
| QString fileName = QFileDialog::getSaveFileName(this, "Save as"); |
| QFile file(fileName); |
| currentFile = fileName; |
| if (!file.open(QFile::WriteOnly | QFile::Text)) { |
| QMessageBox::warning(this,"..","File not opened."); |
| return; |
| } |
| QTextStream out(&file); |
| QString text = ui->textEdit->toPlainText(); |
| out << text; |
| file.flush(); |
| file.close(); |
| } |
| //! [5] |
| |
| //! [6] |
| void Notepad::on_actionPrint_triggered() |
| { |
| QprintDev printDev; |
| QPrintDialog dialog(&printDev, this); |
| if (dialog.exec() == QDialog::Rejected) { |
| return; |
| } |
| ui->textEdit->print(&printDev); |
| } |
| //! [6] |
| |
| void Notepad::on_actionExit_triggered() |
| { |
| QCoreApplication::quit(); |
| } |
| |
| void Notepad::on_actionCopy_triggered() |
| { |
| ui->textEdit->copy(); |
| } |
| |
| void Notepad::on_actionCut_triggered() |
| { |
| ui->textEdit->cut(); |
| } |
| |
| void Notepad::on_actionPaste_triggered() |
| { |
| ui->textEdit->paste(); |
| } |
| |
| void Notepad::on_actionUndo_triggered() |
| { |
| ui->textEdit->undo(); |
| } |
| |
| void Notepad::on_actionRedo_triggered() |
| { |
| ui->textEdit->redo(); |
| } |
| |
| //! [7] |
| void Notepad::on_actionFont_triggered() |
| { |
| bool fontSelected; |
| QFont font = QFontDialog::getFont(&fontSelected, this); |
| if (fontSelected) { |
| ui->textEdit->setFont(font); |
| } |
| } |
| //! [7] |