diff options
Diffstat (limited to 'examples/widgets/mainwindows/recentfiles')
5 files changed, 424 insertions, 0 deletions
diff --git a/examples/widgets/mainwindows/recentfiles/main.cpp b/examples/widgets/mainwindows/recentfiles/main.cpp new file mode 100644 index 0000000000..023357719e --- /dev/null +++ b/examples/widgets/mainwindows/recentfiles/main.cpp @@ -0,0 +1,53 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor +** the names of its contributors may be used to endorse or promote +** products derived from this software without specific prior written +** permission. +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QApplication> + +#include "mainwindow.h" + +int main(int argc, char *argv[]) +{ + QApplication app(argc, argv); + app.setOrganizationName("Trolltech"); + app.setApplicationName("Recent Files Example"); + MainWindow *mainWin = new MainWindow; + mainWin->show(); + return app.exec(); +} diff --git a/examples/widgets/mainwindows/recentfiles/mainwindow.cpp b/examples/widgets/mainwindows/recentfiles/mainwindow.cpp new file mode 100644 index 0000000000..b439ae8950 --- /dev/null +++ b/examples/widgets/mainwindows/recentfiles/mainwindow.cpp @@ -0,0 +1,251 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor +** the names of its contributors may be used to endorse or promote +** products derived from this software without specific prior written +** permission. +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QtWidgets> + +#include "mainwindow.h" + +MainWindow::MainWindow() +{ + setAttribute(Qt::WA_DeleteOnClose); + + textEdit = new QTextEdit; + setCentralWidget(textEdit); + + createActions(); + createMenus(); + (void)statusBar(); + + setWindowFilePath(QString()); + 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->setShortcuts(QKeySequence::Quit); + 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; + setWindowFilePath(curFile); + + QSettings settings; + 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; + 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/widgets/mainwindows/recentfiles/mainwindow.h b/examples/widgets/mainwindows/recentfiles/mainwindow.h new file mode 100644 index 0000000000..dd548838fc --- /dev/null +++ b/examples/widgets/mainwindows/recentfiles/mainwindow.h @@ -0,0 +1,96 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor +** the names of its contributors may be used to endorse or promote +** products derived from this software without specific prior written +** permission. +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#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/widgets/mainwindows/recentfiles/recentfiles.desktop b/examples/widgets/mainwindows/recentfiles/recentfiles.desktop new file mode 100644 index 0000000000..c314cf7f7c --- /dev/null +++ b/examples/widgets/mainwindows/recentfiles/recentfiles.desktop @@ -0,0 +1,11 @@ +[Desktop Entry] +Encoding=UTF-8 +Version=1.0 +Type=Application +Terminal=false +Name=Recent Files +Exec=/opt/usr/bin/recentfiles +Icon=recentfiles +X-Window-Icon= +X-HildonDesk-ShowInToolbar=true +X-Osso-Type=application/x-executable diff --git a/examples/widgets/mainwindows/recentfiles/recentfiles.pro b/examples/widgets/mainwindows/recentfiles/recentfiles.pro new file mode 100644 index 0000000000..5425efc68f --- /dev/null +++ b/examples/widgets/mainwindows/recentfiles/recentfiles.pro @@ -0,0 +1,13 @@ +HEADERS = mainwindow.h +SOURCES = main.cpp \ + mainwindow.cpp + +# install +target.path = $$[QT_INSTALL_EXAMPLES]/qtbase/mainwindows/recentfiles +sources.files = $$SOURCES $$HEADERS $$RESOURCES $$FORMS recentfiles.pro +sources.path = $$[QT_INSTALL_EXAMPLES]/qtbase/mainwindows/recentfiles +INSTALLS += target sources + +QT += widgets + +simulator: warning(This example might not fully work on Simulator platform) |