Qt Reference Documentation

qwebviewselectionsuppressor.h Example File

maemo5/webview/qwebviewselectionsuppressor.h
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 #ifndef QWEBVIEWSELECTIONSUPPRESSOR_H
 #define QWEBVIEWSELECTIONSUPPRESSOR_H

 #include <QtWebKit/qwebview.h>
 #include <QtGui/qevent.h>

 class QWebViewSelectionSuppressor : public QObject
 {
     Q_OBJECT
 public:
     QWebViewSelectionSuppressor(QWebView *v)
         : QObject(v), view(v), enabled(false), mousePressed(false)
     {
         Q_ASSERT(view);
         enable();
     }

     inline void enable()
     {
         if (enabled)
             return;
         view->installEventFilter(this);
         enabled = true;
     }

     inline void disable()
     {
         if (!enabled)
             return;
         view->removeEventFilter(this);
         enabled = false;
     }

     inline bool isEnabled() const
     {
         return enabled;
     }

 protected:
     inline bool eventFilter(QObject *, QEvent *e);

 private:
     QWebView *view;
     bool enabled;
     bool mousePressed;
 };

 bool QWebViewSelectionSuppressor::eventFilter(QObject *, QEvent *e)
 {
     switch (e->type()) {
     case QEvent::MouseButtonPress:
         if (static_cast<QMouseEvent *>(e)->button() == Qt::LeftButton)
             mousePressed = true;
         break;
     case QEvent::MouseButtonRelease:
         if (static_cast<QMouseEvent *>(e)->button() == Qt::LeftButton)
             mousePressed = false;
         break;
     case QEvent::MouseMove:
         if (mousePressed)
             return true;
         break;
     default:
         break;
     }
     return false;
 }

 #endif
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