main.cpp Example File

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#include <QApplication> #include <QMessageBox> #include <QProgressBar> #include <QLineEdit> #include <QLabel> #include <QStatusBar> #include <QMainWindow> #include <QDesktopWidget> #include <QAbstractEventDispatcher> #include <QSignalMapper> #include <QVariant> #include <QSettings> #include "ui_mainwindow.h" static const char qtUrl[] = ""; static const char iWebBrowser2DocumentationUrl[] = ""; static const char versionKey[] = "Version"; static const char geometryKey[] = "Geometry"; struct Location { Location(const QString &t = QString(), const QString &a = QString()) : title(t), address(a) {} QString title; QString address; }; Q_DECLARE_METATYPE(Location) static QList<Location> defaultBookmarks() { QList<Location> result; result.append(Location(QStringLiteral("Qt"), QLatin1String(qtUrl))); result.append(Location(QStringLiteral("Digia"), QStringLiteral(""))); result.append(Location(QStringLiteral("IWebBrowser2 MSDN Documentation"), QLatin1String(iWebBrowser2DocumentationUrl))); return result; } static bool containsAddress(const QList<Location> &locations, const QString &address) { for (const Location &location : locations) { if (location.address == address) return true; } return false; } static inline Location locationFromAction(const QAction *action) { return action->data().value<Location>(); } static QList<Location> readBookMarks(QSettings &settings) { QList<Location> result; if (const int count = settings.beginReadArray(QStringLiteral("Bookmarks"))) { const QString titleKey = QStringLiteral("title"); const QString addressKey = QStringLiteral("address"); for (int i = 0; i < count; ++i) { settings.setArrayIndex(i); result.append(Location(settings.value(titleKey).toString(), settings.value(addressKey).toString())); } } settings.endArray(); return result; } static void saveBookMarks(const QList<Location> &bookmarks, QSettings &settings) { const int count = bookmarks.size(); settings.beginWriteArray(QStringLiteral("Bookmarks")); const QString titleKey = QStringLiteral("title"); const QString addressKey = QStringLiteral("address"); for (int i = 0; i < count; ++i) { settings.setArrayIndex(i); settings.setValue(titleKey,; settings.setValue(addressKey,; } settings.endArray(); } class MainWindow : public QMainWindow, public Ui::MainWindow { Q_OBJECT public: explicit MainWindow(); virtual ~MainWindow(); public slots: void navigate(const QString &address); void on_WebBrowser_TitleChange(const QString &title); void on_WebBrowser_ProgressChange(int a, int b); void on_WebBrowser_CommandStateChange(int cmd, bool on); void on_WebBrowser_BeforeNavigate(); void on_WebBrowser_NavigateComplete(const QString &address); void on_actionGo_triggered(); void on_actionNewWindow_triggered(); void on_actionAddBookmark_triggered(); void on_actionAbout_triggered(); void on_actionAboutQt_triggered(); void on_actionFileClose_triggered(); private: inline const QString address() const { return m_addressEdit->text().trimmed(); } QList<Location> bookmarks() const; QAction *addLocation(const Location &location, QMenu *menu); inline void addBookmark(const Location &location) { m_bookmarkActions << addLocation(location, BookmarksMenu); } QProgressBar *m_progressBar; QLineEdit *m_addressEdit; QList<QAction *> m_bookmarkActions; QList<QAction *> m_historyActions; QSignalMapper m_locationActionMapper; }; MainWindow::MainWindow() { setupUi(this); m_addressEdit = new QLineEdit; tbAddress->insertWidget(actionGo, new QLabel(tr("Address"))); tbAddress->insertWidget(actionGo, m_addressEdit); connect(m_addressEdit, SIGNAL(returnPressed()), actionGo, SLOT(trigger())); connect(actionBack, SIGNAL(triggered()), WebBrowser, SLOT(GoBack())); connect(actionForward, SIGNAL(triggered()), WebBrowser, SLOT(GoForward())); connect(actionStop, SIGNAL(triggered()), WebBrowser, SLOT(Stop())); connect(actionRefresh, SIGNAL(triggered()), WebBrowser, SLOT(Refresh())); connect(actionHome, SIGNAL(triggered()), WebBrowser, SLOT(GoHome())); connect(actionSearch, SIGNAL(triggered()), WebBrowser, SLOT(GoSearch())); m_progressBar = new QProgressBar(statusBar()); m_progressBar->setTextVisible(false); m_progressBar->hide(); statusBar()->addPermanentWidget(m_progressBar); connect(&m_locationActionMapper, QOverload<const QString &>::of(&QSignalMapper::mapped), this, &MainWindow::navigate); QSettings settings(QSettings::IniFormat, QSettings::UserScope, QCoreApplication::organizationName(), QCoreApplication::applicationName()); const QByteArray restoredGeometry = settings.value(QLatin1String(geometryKey)).toByteArray(); if (restoredGeometry.isEmpty() || !restoreGeometry(restoredGeometry)) { const QRect availableGeometry = QApplication::desktop()->availableGeometry(this); const QSize size = (availableGeometry.size() * 4) / 5; resize(size); move( - QPoint(size.width(), size.height()) / 2); } const QString restoredVersion = settings.value(QLatin1String(versionKey)).toString(); QList<Location> bookmarks = readBookMarks(settings); if (bookmarks.isEmpty() || restoredVersion.isEmpty()) bookmarks = defaultBookmarks(); for (const Location &bookmark : qAsConst(bookmarks)) addBookmark(bookmark); } MainWindow::~MainWindow() { QSettings settings(QSettings::IniFormat, QSettings::UserScope, QCoreApplication::organizationName(), QCoreApplication::applicationName()); saveBookMarks(bookmarks(), settings); settings.setValue(QLatin1String(versionKey), QLatin1String(QT_VERSION_STR)); settings.setValue(QLatin1String(geometryKey), saveGeometry()); } QAction *MainWindow::addLocation(const Location &location, QMenu *menu) { QAction *action = menu->addAction(location.title); action->setData(QVariant::fromValue(location)); m_locationActionMapper.setMapping(action, location.address); connect(action, &QAction::triggered, &m_locationActionMapper, QOverload<>::of(&QSignalMapper::map)); return action; } QList<Location> MainWindow::bookmarks() const { QList<Location> result; for (const QAction *action : qAsConst(m_bookmarkActions)) result.append(locationFromAction(action)); return result; } void MainWindow::on_actionAddBookmark_triggered() { if (!m_historyActions.isEmpty()) { const Location location = locationFromAction(m_historyActions.last()); if (!containsAddress(bookmarks(), location.address)) addBookmark(location); } } void MainWindow::on_WebBrowser_TitleChange(const QString &title) { // This is called multiple times after NavigateComplete(). // Add new URLs to history here. setWindowTitle(tr("Qt WebBrowser - ") + title); const QString currentAddress = address(); const QString historyAddress = m_historyActions.isEmpty() ? QString() : locationFromAction(m_historyActions.last()).address; if (currentAddress.isEmpty() || currentAddress == QStringLiteral("about:blank") || currentAddress == historyAddress) return; m_historyActions << addLocation(Location(title, currentAddress), HistoryMenu); if (m_historyActions.size() > 10) delete m_historyActions.takeFirst(); } void MainWindow::on_WebBrowser_ProgressChange(int a, int b) { if (a <= 0 || b <= 0) { m_progressBar->hide(); return; } m_progressBar->setRange(0, b); m_progressBar->setValue(a); m_progressBar->show(); } void MainWindow::on_WebBrowser_CommandStateChange(int cmd, bool on) { switch (cmd) { case 1: actionForward->setEnabled(on); break; case 2: actionBack->setEnabled(on); break; } } void MainWindow::on_WebBrowser_BeforeNavigate() { actionStop->setEnabled(true); } void MainWindow::on_WebBrowser_NavigateComplete(const QString &url) { QSignalBlocker blocker(m_addressEdit); actionStop->setEnabled(false); m_addressEdit->setText(url); } void MainWindow::on_actionGo_triggered() { navigate(address()); } void MainWindow::navigate(const QString &url) { WebBrowser->dynamicCall("Navigate(const QString&)", url); } void MainWindow::on_actionNewWindow_triggered() { MainWindow *window = new MainWindow; window->show(); if (m_addressEdit->text().isEmpty()) return; window->m_addressEdit->setText(m_addressEdit->text()); window->actionStop->setEnabled(true); window->on_actionGo_triggered(); } void MainWindow::on_actionAbout_triggered() { QMessageBox::about(this, tr("About WebBrowser"), tr("This Example has been created using the ActiveQt integration into Qt Designer.\n" "It demonstrates the use of QAxWidget to embed the Internet Explorer ActiveX\n" "control into a Qt application.")); } void MainWindow::on_actionAboutQt_triggered() { QMessageBox::aboutQt(this, tr("About Qt")); } void MainWindow::on_actionFileClose_triggered() { close(); } #include "main.moc" int main(int argc, char *argv[]) { QApplication a(argc, argv); QCoreApplication::setApplicationVersion(QT_VERSION_STR); QCoreApplication::setApplicationName(QStringLiteral("Active Qt Web Browser")); QCoreApplication::setOrganizationName(QStringLiteral("QtProject")); MainWindow w; const auto &arguments = QCoreApplication::arguments(); const QString url = arguments.value(1, QString::fromLatin1(qtUrl)); w.navigate(url);; return a.exec(); }

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