Russian Qt Forum

class PrintThread : public QThread
{
   Q_OBJECT
public:
   PrintThread(QWebView*, QPrinter*);
protected:
   void run();
   QWebView *wv;
   QPrinter *printer;
};

void PrintThread::run()
{
     wv->print(printer);
}

QWebView *webview = new QWebView();
QPrinter *printer = new QPrinter();
//...
PrintThread ptPrint(webview, printer);
ptPrint->start();

class PrintThread : public QThread
{
   Q_OBJECT
public:
   PrintThread(QObject * parent = 0);
   void start(const QString &);
   QPrinter printer_;
   QWebPage *wpage_;
   QPrinter *printer(){return &printer_;};

protected:
   void run();
};

   PrintThread *ptPrint = new PrintThread(this);

   QPrintDialog dlg(ptPrint->printer(), this);

   if (dlg.exec() == QDialog::Accepted)
   {
      connect(ptPrint, SIGNAL(finished()), ptPrint, SLOT(deleteLater()));
      ptPrint->start(html);
    }
   else 
   {
      delete ptPrint;
   }

void PrintThread::start(const QString & html)
{
   html_ = html;
   wpage_ = new QWebPage(this);
   wpage_->moveToThread(this);
   wpage_->mainFrame()->setHtml(html_);
   
   QThread::start();
}

void PrintThread::run()
{
   wpage_->mainFrame()->print(&printer_);
}

void PrintThread::start(const QString & html)
{
   html_ = html;
   wpage_ = new QWebPage(this);
   wframe_ = wpage_->mainFrame();
   wframe_->setHtml(html_);
   wframe_->moveToThread( this );

   QThread::start();
}

void PrintThread::run()
{
   wframe_->print(&printer_);
}

class PrintThread : public QThread
{
    QPrinter _printer;
    QWebFrame *_frame;

public:
    PrintThread(QObject *parent)
        : QThread(parent), _printer(QPrinter::HighResolution), _frame(0)
    {
    }
    ~PrintThread()
    {
        wait();
    }

    QPrinter *printer()
    {
        return &_printer;
    }

    void start(const QString &html)
    {
        _frame = new QWebFrame();     //парент не указываем!
        _frame->moveToThread(this);
        _frame->setHtml(html);
        QThread::start();
    }

protected:
    void run()
    {
        _frame->print(printer());
        delete _frame;
        _frame = 0;
    }
};


void <some_class>::print()
{
    if (!QFontDatabase::supportsThreadedFontRendering()) {
        QPrinter printer(QPrinter::HighResolution);

        QPrintDialog dlg(&printer, this);
        if (dlg.exec() == QDialog::Accepted) {
            qApp->setOverrideCursor(Qt::WaitCursor);
            _webView->print(&printer);
            qApp->restoreOverrideCursor();
        }
        return;
    }

    PrintThread *thread = new PrintThread(this);

    QPrintDialog dlg(thread->printer(), this);
    if (dlg.exec() == QDialog::Accepted) {
        connect(thread, SIGNAL(finished()), SLOT(printingFinished()));
        connect(thread, SIGNAL(finished()), thread, SLOT(deleteLater()));

        qApp->setOverrideCursor(Qt::BusyCursor);
        thread->start(_webView->page()->mainFrame()->toHtml());
    } else {
        delete thread;
    }

}

void <some_class>::printingFinished()
{
    qApp->restoreOverrideCursor();
}