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Diffstat (limited to 'examples/widgets/mainwindows/mdi/mainwindow.cpp')
| -rw-r--r-- | examples/widgets/mainwindows/mdi/mainwindow.cpp | 508 |
1 files changed, 0 insertions, 508 deletions
diff --git a/examples/widgets/mainwindows/mdi/mainwindow.cpp b/examples/widgets/mainwindows/mdi/mainwindow.cpp deleted file mode 100644 index ccfa7435d7..0000000000 --- a/examples/widgets/mainwindows/mdi/mainwindow.cpp +++ /dev/null @@ -1,508 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the examples of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** BSD License Usage -** Alternatively, 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" -#include "mdichild.h" - -MainWindow::MainWindow() - : mdiArea(new QMdiArea) -{ - mdiArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAsNeeded); - mdiArea->setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded); - setCentralWidget(mdiArea); - connect(mdiArea, &QMdiArea::subWindowActivated, - this, &MainWindow::updateMenus); - - createActions(); - createStatusBar(); - updateMenus(); - - readSettings(); - - setWindowTitle(tr("MDI")); - setUnifiedTitleAndToolBarOnMac(true); -} - -void MainWindow::closeEvent(QCloseEvent *event) -{ - mdiArea->closeAllSubWindows(); - if (mdiArea->currentSubWindow()) { - event->ignore(); - } else { - writeSettings(); - event->accept(); - } -} - -void MainWindow::newFile() -{ - MdiChild *child = createMdiChild(); - child->newFile(); - child->show(); -} - -void MainWindow::open() -{ - const QString fileName = QFileDialog::getOpenFileName(this); - if (!fileName.isEmpty()) - openFile(fileName); -} - -bool MainWindow::openFile(const QString &fileName) -{ - if (QMdiSubWindow *existing = findMdiChild(fileName)) { - mdiArea->setActiveSubWindow(existing); - return true; - } - const bool succeeded = loadFile(fileName); - if (succeeded) - statusBar()->showMessage(tr("File loaded"), 2000); - return succeeded; -} - -bool MainWindow::loadFile(const QString &fileName) -{ - MdiChild *child = createMdiChild(); - const bool succeeded = child->loadFile(fileName); - if (succeeded) - child->show(); - else - child->close(); - MainWindow::prependToRecentFiles(fileName); - return succeeded; -} - -static inline QString recentFilesKey() { return QStringLiteral("recentFileList"); } -static inline QString fileKey() { return QStringLiteral("file"); } - -static QStringList readRecentFiles(QSettings &settings) -{ - QStringList result; - const int count = settings.beginReadArray(recentFilesKey()); - for (int i = 0; i < count; ++i) { - settings.setArrayIndex(i); - result.append(settings.value(fileKey()).toString()); - } - settings.endArray(); - return result; -} - -static void writeRecentFiles(const QStringList &files, QSettings &settings) -{ - const int count = files.size(); - settings.beginWriteArray(recentFilesKey()); - for (int i = 0; i < count; ++i) { - settings.setArrayIndex(i); - settings.setValue(fileKey(), files.at(i)); - } - settings.endArray(); -} - -bool MainWindow::hasRecentFiles() -{ - QSettings settings(QCoreApplication::organizationName(), QCoreApplication::applicationName()); - const int count = settings.beginReadArray(recentFilesKey()); - settings.endArray(); - return count > 0; -} - -void MainWindow::prependToRecentFiles(const QString &fileName) -{ - QSettings settings(QCoreApplication::organizationName(), QCoreApplication::applicationName()); - - const QStringList oldRecentFiles = readRecentFiles(settings); - QStringList recentFiles = oldRecentFiles; - recentFiles.removeAll(fileName); - recentFiles.prepend(fileName); - if (oldRecentFiles != recentFiles) - writeRecentFiles(recentFiles, settings); - - setRecentFilesVisible(!recentFiles.isEmpty()); -} - -void MainWindow::setRecentFilesVisible(bool visible) -{ - recentFileSubMenuAct->setVisible(visible); - recentFileSeparator->setVisible(visible); -} - -void MainWindow::updateRecentFileActions() -{ - QSettings settings(QCoreApplication::organizationName(), QCoreApplication::applicationName()); - - const QStringList recentFiles = readRecentFiles(settings); - const int count = qMin(int(MaxRecentFiles), recentFiles.size()); - int i = 0; - for ( ; i < count; ++i) { - const QString fileName = QFileInfo(recentFiles.at(i)).fileName(); - recentFileActs[i]->setText(tr("&%1 %2").arg(i + 1).arg(fileName)); - recentFileActs[i]->setData(recentFiles.at(i)); - recentFileActs[i]->setVisible(true); - } - for ( ; i < MaxRecentFiles; ++i) - recentFileActs[i]->setVisible(false); -} - -void MainWindow::openRecentFile() -{ - if (const QAction *action = qobject_cast<const QAction *>(sender())) - openFile(action->data().toString()); -} - -void MainWindow::save() -{ - if (activeMdiChild() && activeMdiChild()->save()) - statusBar()->showMessage(tr("File saved"), 2000); -} - -void MainWindow::saveAs() -{ - MdiChild *child = activeMdiChild(); - if (child && child->saveAs()) { - statusBar()->showMessage(tr("File saved"), 2000); - MainWindow::prependToRecentFiles(child->currentFile()); - } -} - -#ifndef QT_NO_CLIPBOARD -void MainWindow::cut() -{ - if (activeMdiChild()) - activeMdiChild()->cut(); -} - -void MainWindow::copy() -{ - if (activeMdiChild()) - activeMdiChild()->copy(); -} - -void MainWindow::paste() -{ - if (activeMdiChild()) - activeMdiChild()->paste(); -} -#endif - -void MainWindow::about() -{ - QMessageBox::about(this, tr("About MDI"), - tr("The <b>MDI</b> example demonstrates how to write multiple " - "document interface applications using Qt.")); -} - -void MainWindow::updateMenus() -{ - bool hasMdiChild = (activeMdiChild() != nullptr); - saveAct->setEnabled(hasMdiChild); - saveAsAct->setEnabled(hasMdiChild); -#ifndef QT_NO_CLIPBOARD - pasteAct->setEnabled(hasMdiChild); -#endif - closeAct->setEnabled(hasMdiChild); - closeAllAct->setEnabled(hasMdiChild); - tileAct->setEnabled(hasMdiChild); - cascadeAct->setEnabled(hasMdiChild); - nextAct->setEnabled(hasMdiChild); - previousAct->setEnabled(hasMdiChild); - windowMenuSeparatorAct->setVisible(hasMdiChild); - -#ifndef QT_NO_CLIPBOARD - bool hasSelection = (activeMdiChild() && - activeMdiChild()->textCursor().hasSelection()); - cutAct->setEnabled(hasSelection); - copyAct->setEnabled(hasSelection); -#endif -} - -void MainWindow::updateWindowMenu() -{ - windowMenu->clear(); - windowMenu->addAction(closeAct); - windowMenu->addAction(closeAllAct); - windowMenu->addSeparator(); - windowMenu->addAction(tileAct); - windowMenu->addAction(cascadeAct); - windowMenu->addSeparator(); - windowMenu->addAction(nextAct); - windowMenu->addAction(previousAct); - windowMenu->addAction(windowMenuSeparatorAct); - - QList<QMdiSubWindow *> windows = mdiArea->subWindowList(); - windowMenuSeparatorAct->setVisible(!windows.isEmpty()); - - for (int i = 0; i < windows.size(); ++i) { - QMdiSubWindow *mdiSubWindow = windows.at(i); - MdiChild *child = qobject_cast<MdiChild *>(mdiSubWindow->widget()); - - QString text; - if (i < 9) { - text = tr("&%1 %2").arg(i + 1) - .arg(child->userFriendlyCurrentFile()); - } else { - text = tr("%1 %2").arg(i + 1) - .arg(child->userFriendlyCurrentFile()); - } - QAction *action = windowMenu->addAction(text, mdiSubWindow, [this, mdiSubWindow]() { - mdiArea->setActiveSubWindow(mdiSubWindow); - }); - action->setCheckable(true); - action ->setChecked(child == activeMdiChild()); - } -} - -MdiChild *MainWindow::createMdiChild() -{ - MdiChild *child = new MdiChild; - mdiArea->addSubWindow(child); - -#ifndef QT_NO_CLIPBOARD - connect(child, &QTextEdit::copyAvailable, cutAct, &QAction::setEnabled); - connect(child, &QTextEdit::copyAvailable, copyAct, &QAction::setEnabled); -#endif - - return child; -} - -void MainWindow::createActions() -{ - QMenu *fileMenu = menuBar()->addMenu(tr("&File")); - QToolBar *fileToolBar = addToolBar(tr("File")); - - const QIcon newIcon = QIcon::fromTheme("document-new", QIcon(":/images/new.png")); - newAct = new QAction(newIcon, tr("&New"), this); - newAct->setShortcuts(QKeySequence::New); - newAct->setStatusTip(tr("Create a new file")); - connect(newAct, &QAction::triggered, this, &MainWindow::newFile); - fileMenu->addAction(newAct); - fileToolBar->addAction(newAct); - - const QIcon openIcon = QIcon::fromTheme("document-open", QIcon(":/images/open.png")); - QAction *openAct = new QAction(openIcon, tr("&Open..."), this); - openAct->setShortcuts(QKeySequence::Open); - openAct->setStatusTip(tr("Open an existing file")); - connect(openAct, &QAction::triggered, this, &MainWindow::open); - fileMenu->addAction(openAct); - fileToolBar->addAction(openAct); - - const QIcon saveIcon = QIcon::fromTheme("document-save", QIcon(":/images/save.png")); - saveAct = new QAction(saveIcon, tr("&Save"), this); - saveAct->setShortcuts(QKeySequence::Save); - saveAct->setStatusTip(tr("Save the document to disk")); - connect(saveAct, &QAction::triggered, this, &MainWindow::save); - fileToolBar->addAction(saveAct); - - const QIcon saveAsIcon = QIcon::fromTheme("document-save-as"); - saveAsAct = new QAction(saveAsIcon, tr("Save &As..."), this); - saveAsAct->setShortcuts(QKeySequence::SaveAs); - saveAsAct->setStatusTip(tr("Save the document under a new name")); - connect(saveAsAct, &QAction::triggered, this, &MainWindow::saveAs); - fileMenu->addAction(saveAsAct); - - fileMenu->addSeparator(); - - QMenu *recentMenu = fileMenu->addMenu(tr("Recent...")); - connect(recentMenu, &QMenu::aboutToShow, this, &MainWindow::updateRecentFileActions); - recentFileSubMenuAct = recentMenu->menuAction(); - - for (int i = 0; i < MaxRecentFiles; ++i) { - recentFileActs[i] = recentMenu->addAction(QString(), this, &MainWindow::openRecentFile); - recentFileActs[i]->setVisible(false); - } - - recentFileSeparator = fileMenu->addSeparator(); - - setRecentFilesVisible(MainWindow::hasRecentFiles()); - - fileMenu->addAction(tr("Switch layout direction"), this, &MainWindow::switchLayoutDirection); - - fileMenu->addSeparator(); - -//! [0] - const QIcon exitIcon = QIcon::fromTheme("application-exit"); - QAction *exitAct = fileMenu->addAction(exitIcon, tr("E&xit"), qApp, &QApplication::closeAllWindows); - exitAct->setShortcuts(QKeySequence::Quit); - exitAct->setStatusTip(tr("Exit the application")); - fileMenu->addAction(exitAct); -//! [0] - -#ifndef QT_NO_CLIPBOARD - QMenu *editMenu = menuBar()->addMenu(tr("&Edit")); - QToolBar *editToolBar = addToolBar(tr("Edit")); - - const QIcon cutIcon = QIcon::fromTheme("edit-cut", QIcon(":/images/cut.png")); - cutAct = new QAction(cutIcon, tr("Cu&t"), this); - cutAct->setShortcuts(QKeySequence::Cut); - cutAct->setStatusTip(tr("Cut the current selection's contents to the " - "clipboard")); - connect(cutAct, &QAction::triggered, this, &MainWindow::cut); - editMenu->addAction(cutAct); - editToolBar->addAction(cutAct); - - const QIcon copyIcon = QIcon::fromTheme("edit-copy", QIcon(":/images/copy.png")); - copyAct = new QAction(copyIcon, tr("&Copy"), this); - copyAct->setShortcuts(QKeySequence::Copy); - copyAct->setStatusTip(tr("Copy the current selection's contents to the " - "clipboard")); - connect(copyAct, &QAction::triggered, this, &MainWindow::copy); - editMenu->addAction(copyAct); - editToolBar->addAction(copyAct); - - const QIcon pasteIcon = QIcon::fromTheme("edit-paste", QIcon(":/images/paste.png")); - pasteAct = new QAction(pasteIcon, tr("&Paste"), this); - pasteAct->setShortcuts(QKeySequence::Paste); - pasteAct->setStatusTip(tr("Paste the clipboard's contents into the current " - "selection")); - connect(pasteAct, &QAction::triggered, this, &MainWindow::paste); - editMenu->addAction(pasteAct); - editToolBar->addAction(pasteAct); -#endif - - windowMenu = menuBar()->addMenu(tr("&Window")); - connect(windowMenu, &QMenu::aboutToShow, this, &MainWindow::updateWindowMenu); - - closeAct = new QAction(tr("Cl&ose"), this); - closeAct->setStatusTip(tr("Close the active window")); - connect(closeAct, &QAction::triggered, - mdiArea, &QMdiArea::closeActiveSubWindow); - - closeAllAct = new QAction(tr("Close &All"), this); - closeAllAct->setStatusTip(tr("Close all the windows")); - connect(closeAllAct, &QAction::triggered, mdiArea, &QMdiArea::closeAllSubWindows); - - tileAct = new QAction(tr("&Tile"), this); - tileAct->setStatusTip(tr("Tile the windows")); - connect(tileAct, &QAction::triggered, mdiArea, &QMdiArea::tileSubWindows); - - cascadeAct = new QAction(tr("&Cascade"), this); - cascadeAct->setStatusTip(tr("Cascade the windows")); - connect(cascadeAct, &QAction::triggered, mdiArea, &QMdiArea::cascadeSubWindows); - - nextAct = new QAction(tr("Ne&xt"), this); - nextAct->setShortcuts(QKeySequence::NextChild); - nextAct->setStatusTip(tr("Move the focus to the next window")); - connect(nextAct, &QAction::triggered, mdiArea, &QMdiArea::activateNextSubWindow); - - previousAct = new QAction(tr("Pre&vious"), this); - previousAct->setShortcuts(QKeySequence::PreviousChild); - previousAct->setStatusTip(tr("Move the focus to the previous " - "window")); - connect(previousAct, &QAction::triggered, mdiArea, &QMdiArea::activatePreviousSubWindow); - - windowMenuSeparatorAct = new QAction(this); - windowMenuSeparatorAct->setSeparator(true); - - updateWindowMenu(); - - menuBar()->addSeparator(); - - QMenu *helpMenu = menuBar()->addMenu(tr("&Help")); - - QAction *aboutAct = helpMenu->addAction(tr("&About"), this, &MainWindow::about); - aboutAct->setStatusTip(tr("Show the application's About box")); - - QAction *aboutQtAct = helpMenu->addAction(tr("About &Qt"), qApp, &QApplication::aboutQt); - aboutQtAct->setStatusTip(tr("Show the Qt library's About box")); -} - -void MainWindow::createStatusBar() -{ - statusBar()->showMessage(tr("Ready")); -} - -void MainWindow::readSettings() -{ - QSettings settings(QCoreApplication::organizationName(), QCoreApplication::applicationName()); - const QByteArray geometry = settings.value("geometry", QByteArray()).toByteArray(); - if (geometry.isEmpty()) { - const QRect availableGeometry = screen()->availableGeometry(); - resize(availableGeometry.width() / 3, availableGeometry.height() / 2); - move((availableGeometry.width() - width()) / 2, - (availableGeometry.height() - height()) / 2); - } else { - restoreGeometry(geometry); - } -} - -void MainWindow::writeSettings() -{ - QSettings settings(QCoreApplication::organizationName(), QCoreApplication::applicationName()); - settings.setValue("geometry", saveGeometry()); -} - -MdiChild *MainWindow::activeMdiChild() const -{ - if (QMdiSubWindow *activeSubWindow = mdiArea->activeSubWindow()) - return qobject_cast<MdiChild *>(activeSubWindow->widget()); - return nullptr; -} - -QMdiSubWindow *MainWindow::findMdiChild(const QString &fileName) const -{ - QString canonicalFilePath = QFileInfo(fileName).canonicalFilePath(); - - const QList<QMdiSubWindow *> subWindows = mdiArea->subWindowList(); - for (QMdiSubWindow *window : subWindows) { - MdiChild *mdiChild = qobject_cast<MdiChild *>(window->widget()); - if (mdiChild->currentFile() == canonicalFilePath) - return window; - } - return nullptr; -} - -void MainWindow::switchLayoutDirection() -{ - if (layoutDirection() == Qt::LeftToRight) - QGuiApplication::setLayoutDirection(Qt::RightToLeft); - else - QGuiApplication::setLayoutDirection(Qt::LeftToRight); -} |