yakarimmainwindow.cpp

#include <QtWidgets>
#include <QtNetwork>
#include <QtWebKitWidgets>
#include "yakarimmainwindow.h"

//! [1]

MainWindow::MainWindow(const QUrl& url)
{
    progress = 0;


    QNetworkProxyFactory::setUseSystemConfiguration(true);

//! [2]
    view = new QWebView(this);
    view->load(url);
    connect(view, SIGNAL(loadFinished(bool)), SLOT(adjustLocation()));
    connect(view, SIGNAL(titleChanged(QString)), SLOT(adjustTitle()));
    connect(view, SIGNAL(loadProgress(int)), SLOT(setProgress(int)));
    connect(view, SIGNAL(loadFinished(bool)), SLOT(finishLoading(bool)));

    //connect(langGroup, SIGNAL (triggered(QAction *)), this, SLOT (slotLanguageChanged(QAction *)));

    locationEdit = new QLineEdit(this);
    locationEdit->setSizePolicy(QSizePolicy::Expanding, locationEdit->sizePolicy().verticalPolicy());
    connect(locationEdit, SIGNAL(returnPressed()), SLOT(changeLocation()));

    QToolBar *toolBar = addToolBar(tr("Navigation"));
    toolBar->addAction(view->pageAction(QWebPage::Back));
    toolBar->addAction(view->pageAction(QWebPage::Forward));
    toolBar->addAction(view->pageAction(QWebPage::Reload));
    toolBar->addAction(view->pageAction(QWebPage::Stop));
    toolBar->addWidget(locationEdit);
//! [2]

    QMenu *viewMenu = menuBar()->addMenu(tr("&پرونده"));
    QAction* viewSourceAction = new QAction("Page Source", this);
    connect(viewSourceAction, SIGNAL(triggered()), SLOT(viewSource()));
    viewMenu->addAction(viewSourceAction);
    QMenu *langMenu = menuBar()->addMenu(tr("&Language"));

    setCentralWidget(view);
    setUnifiedTitleAndToolBarOnMac(true);
}

void MainWindow::viewSource()
{
    QNetworkAccessManager* accessManager = view->page()->networkAccessManager();
    QNetworkRequest request(view->url());
    QNetworkReply* reply = accessManager->get(request);
    connect(reply, SIGNAL(finished()), this, SLOT(slotSourceDownloaded()));
}

void MainWindow::slotSourceDownloaded()
{
    QNetworkReply* reply = qobject_cast<QNetworkReply*>(const_cast<QObject*>(sender()));
    QTextEdit* textEdit = new QTextEdit(NULL);
    textEdit->setAttribute(Qt::WA_DeleteOnClose);
    textEdit->show();
    textEdit->setPlainText(reply->readAll());
    reply->deleteLater();
}

//! [4]
void MainWindow::adjustLocation()
{
    locationEdit->setText(view->url().toString());
}

void MainWindow::changeLocation()
{
    QUrl url = QUrl::fromUserInput(locationEdit->text());
    view->load(url);
    view->setFocus();
}
//! [4]

//! [5]
void MainWindow::adjustTitle()
{
    if (progress <= 0 || progress >= 100)
        setWindowTitle(view->title());
    else
        setWindowTitle(QString("%1 (%2%)").arg(view->title()).arg(progress));
}

void MainWindow::setProgress(int p)
{
    progress = p;
    adjustTitle();
}
//! [5]

//! [6]
void MainWindow::finishLoading(bool)
{
    progress = 100;
    adjustTitle();

}
//! [6]

void MainWindow::createLanguageMenu(void)
{
 //QActionGroup* langGroup = new QActionGroup(ui.menuLanguage);
 //langGroup->setExclusive(true);

 //connect(langGroup, SIGNAL (triggered(QAction *)), this, SLOT (slotLanguageChanged(QAction *)));

 // format systems language
 QString defaultLocale = QLocale::system().name(); // e.g. "de_DE"
 defaultLocale.truncate(defaultLocale.lastIndexOf('_')); // e.g. "de"

 m_langPath = QApplication::applicationDirPath();
 m_langPath.append("/languages");
 QDir dir(m_langPath);
 QStringList fileNames = dir.entryList(QStringList("TranslationExample_*.qm"));

 for (int i = 0; i < fileNames.size(); ++i) {
  // get locale extracted by filename
  QString locale;
  locale = fileNames[i]; // "TranslationExample_de.qm"
  locale.truncate(locale.lastIndexOf('.')); // "TranslationExample_de"
  locale.remove(0, locale.indexOf('_') + 1); // "de"

 QString lang = QLocale::languageToString(QLocale(locale).language());
 QIcon ico(QString("%1/%2.png").arg(m_langPath).arg(locale));

 QAction *action = new QAction(ico, lang, this);
 action->setCheckable(true);
 action->setData(locale);

 //ui.menuLanguage->addAction(action);
 //langGroup->addAction(action);

 // set default translators and language checked
 if (defaultLocale == locale)
 {
 action->setChecked(true);
 }
 }
}

// Called every time, when a menu entry of the language menu is called
void MainWindow::slotLanguageChanged(QAction* action)
{
 if(0 != action) {
  // load the language dependant on the action content
  loadLanguage(action->data().toString());
  setWindowIcon(action->icon());
 }
}

void switchTranslator(QTranslator& translator, const QString& filename)
{
 // remove the old translator
 qApp->removeTranslator(&translator);

 // load the new translator
 if(translator.load(filename))
  qApp->installTranslator(&translator);
}

void MainWindow::loadLanguage(const QString& rLanguage)
{
 if(m_currLang != rLanguage) {
  m_currLang = rLanguage;
  QLocale locale = QLocale(m_currLang);
  QLocale::setDefault(locale);
  QString languageName = QLocale::languageToString(locale.language());
  switchTranslator(m_translator, QString("TranslationExample_%1.qm").arg(rLanguage));
  switchTranslator(m_translatorQt, QString("qt_%1.qm").arg(rLanguage));
  //ui.statusBar->showMessage(tr("Current Language changed to %1").arg(languageName));
 }
}

void MainWindow::changeEvent(QEvent* event)
{
 if(0 != event) {
  switch(event->type()) {
   // this event is send if a translator is loaded
   case QEvent::LanguageChange:
    //ui.retranslateUi(this);
    break;

   // this event is send, if the system, language changes
   case QEvent::LocaleChange:
   {
    QString locale = QLocale::system().name();
    locale.truncate(locale.lastIndexOf('_'));
    loadLanguage(locale);
   }
   break;
  }
 }
 QMainWindow::changeEvent(event);
}

/*
 *from fancy sample
 *
#include <QtWidgets>
#include <QtNetwork>
#include <QtWebKitWidgets>
#include "mainwindow.h"

//! [1]

MainWindow::MainWindow(const QUrl& url)
{
    progress = 0;

    QFile file;
    file.setFileName(":/jquery.min.js");
    file.open(QIODevice::ReadOnly);
    jQuery = file.readAll();
    jQuery.append("\nvar qt = { 'jQuery': jQuery.noConflict(true) };");
    file.close();
//! [1]

    QNetworkProxyFactory::setUseSystemConfiguration(true);

//! [2]
    view = new QWebView(this);
    view->load(url);
    connect(view, SIGNAL(loadFinished(bool)), SLOT(adjustLocation()));
    connect(view, SIGNAL(titleChanged(QString)), SLOT(adjustTitle()));
    connect(view, SIGNAL(loadProgress(int)), SLOT(setProgress(int)));
    connect(view, SIGNAL(loadFinished(bool)), SLOT(finishLoading(bool)));

    locationEdit = new QLineEdit(this);
    locationEdit->setSizePolicy(QSizePolicy::Expanding, locationEdit->sizePolicy().verticalPolicy());
    connect(locationEdit, SIGNAL(returnPressed()), SLOT(changeLocation()));

    QToolBar *toolBar = addToolBar(tr("Navigation"));
    toolBar->addAction(view->pageAction(QWebPage::Back));
    toolBar->addAction(view->pageAction(QWebPage::Forward));
    toolBar->addAction(view->pageAction(QWebPage::Reload));
    toolBar->addAction(view->pageAction(QWebPage::Stop));
    toolBar->addWidget(locationEdit);
//! [2]

    QMenu *viewMenu = menuBar()->addMenu(tr("&View"));
    QAction* viewSourceAction = new QAction("Page Source", this);
    connect(viewSourceAction, SIGNAL(triggered()), SLOT(viewSource()));
    viewMenu->addAction(viewSourceAction);

//! [3]
    QMenu *effectMenu = menuBar()->addMenu(tr("&Effect"));
    effectMenu->addAction("Highlight all links", this, SLOT(highlightAllLinks()));

    rotateAction = new QAction(this);
    rotateAction->setIcon(style()->standardIcon(QStyle::SP_FileDialogDetailedView));
    rotateAction->setCheckable(true);
    rotateAction->setText(tr("Turn images upside down"));
    connect(rotateAction, SIGNAL(toggled(bool)), this, SLOT(rotateImages(bool)));
    effectMenu->addAction(rotateAction);

    QMenu *toolsMenu = menuBar()->addMenu(tr("&Tools"));
    toolsMenu->addAction(tr("Remove GIF images"), this, SLOT(removeGifImages()));
    toolsMenu->addAction(tr("Remove all inline frames"), this, SLOT(removeInlineFrames()));
    toolsMenu->addAction(tr("Remove all object elements"), this, SLOT(removeObjectElements()));
    toolsMenu->addAction(tr("Remove all embedded elements"), this, SLOT(removeEmbeddedElements()));

    setCentralWidget(view);
    setUnifiedTitleAndToolBarOnMac(true);
}
//! [3]

void MainWindow::viewSource()
{
    QNetworkAccessManager* accessManager = view->page()->networkAccessManager();
    QNetworkRequest request(view->url());
    QNetworkReply* reply = accessManager->get(request);
    connect(reply, SIGNAL(finished()), this, SLOT(slotSourceDownloaded()));
}

void MainWindow::slotSourceDownloaded()
{
    QNetworkReply* reply = qobject_cast<QNetworkReply*>(const_cast<QObject*>(sender()));
    QTextEdit* textEdit = new QTextEdit(NULL);
    textEdit->setAttribute(Qt::WA_DeleteOnClose);
    textEdit->show();
    textEdit->setPlainText(reply->readAll());
    reply->deleteLater();
}

//! [4]
void MainWindow::adjustLocation()
{
    locationEdit->setText(view->url().toString());
}

void MainWindow::changeLocation()
{
    QUrl url = QUrl::fromUserInput(locationEdit->text());
    view->load(url);
    view->setFocus();
}
//! [4]

//! [5]
void MainWindow::adjustTitle()
{
    if (progress <= 0 || progress >= 100)
        setWindowTitle(view->title());
    else
        setWindowTitle(QString("%1 (%2%)").arg(view->title()).arg(progress));
}

void MainWindow::setProgress(int p)
{
    progress = p;
    adjustTitle();
}
//! [5]

//! [6]
void MainWindow::finishLoading(bool)
{
    progress = 100;
    adjustTitle();
    view->page()->mainFrame()->evaluateJavaScript(jQuery);

    rotateImages(rotateAction->isChecked());
}
//! [6]

//! [7]
void MainWindow::highlightAllLinks()
{
    // We append '; undefined' after the jQuery call here to prevent a possible recursion loop and crash caused by
    // the way the elements returned by the each iterator elements reference each other, which causes problems upon
    // converting them to QVariants.
    QString code = "qt.jQuery('a').each( function () { qt.jQuery(this).css('background-color', 'yellow') } ); undefined";
    view->page()->mainFrame()->evaluateJavaScript(code);
}
//! [7]

//! [8]
void MainWindow::rotateImages(bool invert)
{
    QString code;

    // We append '; undefined' after each of the jQuery calls here to prevent a possible recursion loop and crash caused by
    // the way the elements returned by the each iterator elements reference each other, which causes problems upon
    // converting them to QVariants.
    if (invert)
        code = "qt.jQuery('img').each( function () { qt.jQuery(this).css('-webkit-transition', '-webkit-transform 2s'); qt.jQuery(this).css('-webkit-transform', 'rotate(180deg)') } ); undefined";
    else
        code = "qt.jQuery('img').each( function () { qt.jQuery(this).css('-webkit-transition', '-webkit-transform 2s'); qt.jQuery(this).css('-webkit-transform', 'rotate(0deg)') } ); undefined";
    view->page()->mainFrame()->evaluateJavaScript(code);
}
//! [8]

//! [9]
void MainWindow::removeGifImages()
{
    QString code = "qt.jQuery('[src*=gif]').remove()";
    view->page()->mainFrame()->evaluateJavaScript(code);
}

void MainWindow::removeInlineFrames()
{
    QString code = "qt.jQuery('iframe').remove()";
    view->page()->mainFrame()->evaluateJavaScript(code);
}

void MainWindow::removeObjectElements()
{
    QString code = "qt.jQuery('object').remove()";
    view->page()->mainFrame()->evaluateJavaScript(code);
}

void MainWindow::removeEmbeddedElements()
{
    QString code = "qt.jQuery('embed').remove()";
    view->page()->mainFrame()->evaluateJavaScript(code);
}
//! [9]


 **/