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Diffstat (limited to 'examples/widgets/mainwindows/recentfiles/mainwindow.cpp')
| -rw-r--r-- | examples/widgets/mainwindows/recentfiles/mainwindow.cpp | 251 |
1 files changed, 0 insertions, 251 deletions
diff --git a/examples/widgets/mainwindows/recentfiles/mainwindow.cpp b/examples/widgets/mainwindows/recentfiles/mainwindow.cpp deleted file mode 100644 index b89797092a..0000000000 --- a/examples/widgets/mainwindows/recentfiles/mainwindow.cpp +++ /dev/null @@ -1,251 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2015 The Qt Company Ltd. -** Contact: http://www.qt.io/licensing/ -** -** 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 The Qt Company Ltd 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(); -} |