Long live Qt!

4 files changed, 414 insertions, 0 deletions

diff --git a/examples/mainwindows/recentfiles/main.cpp b/examples/mainwindows/recentfiles/main.cpp
new file mode 100644
index 0000000..d1c8eb0
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+++ b/examples/mainwindows/recentfiles/main.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QApplication>
+
+#include "mainwindow.h"
+
+int main(int argc, char *argv[])
+{
+    QApplication app(argc, argv);
+    MainWindow *mainWin = new MainWindow;
+    mainWin->show();
+    return app.exec();
+}
diff --git a/examples/mainwindows/recentfiles/mainwindow.cpp b/examples/mainwindows/recentfiles/mainwindow.cpp
new file mode 100644
index 0000000..c8c2f88
--- /dev/null
+++ b/examples/mainwindows/recentfiles/mainwindow.cpp
@@ -0,0 +1,256 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+
+#include "mainwindow.h"
+
+MainWindow::MainWindow()
+{
+    setAttribute(Qt::WA_DeleteOnClose);
+
+    textEdit = new QTextEdit;
+    setCentralWidget(textEdit);
+
+    createActions();
+    createMenus();
+    (void)statusBar();
+
+    setWindowTitle(tr("Recent Files"));
+    resize(400, 300);
+}
+
+void MainWindow::newFile()
+{
+    MainWindow *other = new MainWindow;
+    other->show();
+}
+
+void MainWindow::open()
+{
+    QString fileName = QFileDialog::getOpenFileName(this);
+    if (!fileName.isEmpty())
+        loadFile(fileName);
+}
+
+void MainWindow::save()
+{
+    if (curFile.isEmpty())
+        saveAs();
+    else
+        saveFile(curFile);
+}
+
+void MainWindow::saveAs()
+{
+    QString fileName = QFileDialog::getSaveFileName(this);
+    if (fileName.isEmpty())
+        return;
+
+    saveFile(fileName);
+}
+
+void MainWindow::openRecentFile()
+{
+    QAction *action = qobject_cast<QAction *>(sender());
+    if (action)
+        loadFile(action->data().toString());
+}
+
+void MainWindow::about()
+{
+   QMessageBox::about(this, tr("About Recent Files"),
+            tr("The <b>Recent Files</b> example demonstrates how to provide a "
+               "recently used file menu in a Qt application."));
+}
+
+void MainWindow::createActions()
+{
+    newAct = new QAction(tr("&New"), this);
+    newAct->setShortcuts(QKeySequence::New);
+    newAct->setStatusTip(tr("Create a new file"));
+    connect(newAct, SIGNAL(triggered()), this, SLOT(newFile()));
+
+    openAct = new QAction(tr("&Open..."), this);
+    openAct->setShortcuts(QKeySequence::Open);
+    openAct->setStatusTip(tr("Open an existing file"));
+    connect(openAct, SIGNAL(triggered()), this, SLOT(open()));
+
+    saveAct = new QAction(tr("&Save"), this);
+    saveAct->setShortcuts(QKeySequence::Save);
+    saveAct->setStatusTip(tr("Save the document to disk"));
+    connect(saveAct, SIGNAL(triggered()), this, SLOT(save()));
+
+    saveAsAct = new QAction(tr("Save &As..."), this);
+    saveAsAct->setShortcuts(QKeySequence::SaveAs);
+    saveAsAct->setStatusTip(tr("Save the document under a new name"));
+    connect(saveAsAct, SIGNAL(triggered()), this, SLOT(saveAs()));
+
+    for (int i = 0; i < MaxRecentFiles; ++i) {
+        recentFileActs[i] = new QAction(this);
+        recentFileActs[i]->setVisible(false);
+        connect(recentFileActs[i], SIGNAL(triggered()),
+                this, SLOT(openRecentFile()));
+    }
+
+    exitAct = new QAction(tr("E&xit"), this);
+    exitAct->setShortcut(tr("Ctrl+Q"));
+    exitAct->setStatusTip(tr("Exit the application"));
+    connect(exitAct, SIGNAL(triggered()), qApp, SLOT(closeAllWindows()));
+
+    aboutAct = new QAction(tr("&About"), this);
+    aboutAct->setStatusTip(tr("Show the application's About box"));
+    connect(aboutAct, SIGNAL(triggered()), this, SLOT(about()));
+
+    aboutQtAct = new QAction(tr("About &Qt"), this);
+    aboutQtAct->setStatusTip(tr("Show the Qt library's About box"));
+    connect(aboutQtAct, SIGNAL(triggered()), qApp, SLOT(aboutQt()));
+}
+
+void MainWindow::createMenus()
+{
+    fileMenu = menuBar()->addMenu(tr("&File"));
+    fileMenu->addAction(newAct);
+    fileMenu->addAction(openAct);
+    fileMenu->addAction(saveAct);
+    fileMenu->addAction(saveAsAct);
+    separatorAct = fileMenu->addSeparator();
+    for (int i = 0; i < MaxRecentFiles; ++i)
+        fileMenu->addAction(recentFileActs[i]);
+    fileMenu->addSeparator();
+    fileMenu->addAction(exitAct);
+    updateRecentFileActions();
+
+    menuBar()->addSeparator();
+
+    helpMenu = menuBar()->addMenu(tr("&Help"));
+    helpMenu->addAction(aboutAct);
+    helpMenu->addAction(aboutQtAct);
+}
+
+void MainWindow::loadFile(const QString &fileName)
+{
+    QFile file(fileName);
+    if (!file.open(QFile::ReadOnly | QFile::Text)) {
+        QMessageBox::warning(this, tr("Recent Files"),
+                             tr("Cannot read file %1:\n%2.")
+                             .arg(fileName)
+                             .arg(file.errorString()));
+        return;
+    }
+
+    QTextStream in(&file);
+    QApplication::setOverrideCursor(Qt::WaitCursor);
+    textEdit->setPlainText(in.readAll());
+    QApplication::restoreOverrideCursor();
+
+    setCurrentFile(fileName);
+    statusBar()->showMessage(tr("File loaded"), 2000);
+}
+
+void MainWindow::saveFile(const QString &fileName)
+{
+    QFile file(fileName);
+    if (!file.open(QFile::WriteOnly | QFile::Text)) {
+        QMessageBox::warning(this, tr("Recent Files"),
+                             tr("Cannot write file %1:\n%2.")
+                             .arg(fileName)
+                             .arg(file.errorString()));
+        return;
+    }
+
+    QTextStream out(&file);
+    QApplication::setOverrideCursor(Qt::WaitCursor);
+    out << textEdit->toPlainText();
+    QApplication::restoreOverrideCursor();
+
+    setCurrentFile(fileName);
+    statusBar()->showMessage(tr("File saved"), 2000);
+}
+
+void MainWindow::setCurrentFile(const QString &fileName)
+{
+    curFile = fileName;
+    if (curFile.isEmpty())
+        setWindowTitle(tr("Recent Files"));
+    else
+        setWindowTitle(tr("%1 - %2").arg(strippedName(curFile))
+                                    .arg(tr("Recent Files")));
+
+    QSettings settings("Trolltech", "Recent Files Example");
+    QStringList files = settings.value("recentFileList").toStringList();
+    files.removeAll(fileName);
+    files.prepend(fileName);
+    while (files.size() > MaxRecentFiles)
+        files.removeLast();
+
+    settings.setValue("recentFileList", files);
+
+    foreach (QWidget *widget, QApplication::topLevelWidgets()) {
+        MainWindow *mainWin = qobject_cast<MainWindow *>(widget);
+        if (mainWin)
+            mainWin->updateRecentFileActions();
+    }
+}
+
+void MainWindow::updateRecentFileActions()
+{
+    QSettings settings("Trolltech", "Recent Files Example");
+    QStringList files = settings.value("recentFileList").toStringList();
+
+    int numRecentFiles = qMin(files.size(), (int)MaxRecentFiles);
+
+    for (int i = 0; i < numRecentFiles; ++i) {
+        QString text = tr("&%1 %2").arg(i + 1).arg(strippedName(files[i]));
+        recentFileActs[i]->setText(text);
+        recentFileActs[i]->setData(files[i]);
+        recentFileActs[i]->setVisible(true);
+    }
+    for (int j = numRecentFiles; j < MaxRecentFiles; ++j)
+        recentFileActs[j]->setVisible(false);
+
+    separatorAct->setVisible(numRecentFiles > 0);
+}
+
+QString MainWindow::strippedName(const QString &fullFileName)
+{
+    return QFileInfo(fullFileName).fileName();
+}
diff --git a/examples/mainwindows/recentfiles/mainwindow.h b/examples/mainwindows/recentfiles/mainwindow.h
new file mode 100644
index 0000000..9d9d467
--- /dev/null
+++ b/examples/mainwindows/recentfiles/mainwindow.h
@@ -0,0 +1,97 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef MAINWINDOW_H
+#define MAINWINDOW_H
+
+#include <QList>
+#include <QMainWindow>
+
+QT_BEGIN_NAMESPACE
+class QAction;
+class QMenu;
+class QTextEdit;
+QT_END_NAMESPACE
+
+class MainWindow : public QMainWindow
+{
+    Q_OBJECT
+
+public:
+    MainWindow();
+
+private slots:
+    void newFile();
+    void open();
+    void save();
+    void saveAs();
+    void openRecentFile();
+    void about();
+
+private:
+    void createActions();
+    void createMenus();
+    void loadFile(const QString &fileName);
+    void saveFile(const QString &fileName);
+    void setCurrentFile(const QString &fileName);
+    void updateRecentFileActions();
+    QString strippedName(const QString &fullFileName);
+
+    QString curFile;
+
+    QTextEdit *textEdit;
+    QMenu *fileMenu;
+    QMenu *recentFilesMenu;
+    QMenu *helpMenu;
+    QAction *newAct;
+    QAction *openAct;
+    QAction *saveAct;
+    QAction *saveAsAct;
+    QAction *exitAct;
+    QAction *aboutAct;
+    QAction *aboutQtAct;
+    QAction *separatorAct;
+
+    enum { MaxRecentFiles = 5 };
+    QAction *recentFileActs[MaxRecentFiles];
+};
+
+#endif
diff --git a/examples/mainwindows/recentfiles/recentfiles.pro b/examples/mainwindows/recentfiles/recentfiles.pro
new file mode 100644
index 0000000..7c62cdf
--- /dev/null
+++ b/examples/mainwindows/recentfiles/recentfiles.pro
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+HEADERS       = mainwindow.h
+SOURCES       = main.cpp \
+                mainwindow.cpp
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/mainwindows/recentfiles
+sources.files = $$SOURCES $$HEADERS $$RESOURCES $$FORMS recentfiles.pro
+sources.path = $$[QT_INSTALL_EXAMPLES]/mainwindows/recentfiles
+INSTALLS += target sources