C++ QWheelEvent::state方法代码示例

// Handle events on behalf of the text area.
bool QsciScintillaBase::eventFilter(QObject *o, QEvent *e)
{
    if (o != txtarea)
        return QWidget::eventFilter(o, e);

    bool used = true;

    switch (e->type())
    {
    case QEvent::ContextMenu:
        contextMenuEvent(static_cast<QContextMenuEvent *>(e));
        break;

    case QEvent::DragEnter:
        dragEnterEvent(static_cast<QDragEnterEvent *>(e));
        break;

    case QEvent::DragLeave:
        dragLeaveEvent(static_cast<QDragLeaveEvent *>(e));
        break;

    case QEvent::DragMove:
        dragMoveEvent(static_cast<QDragMoveEvent *>(e));
        break;

    case QEvent::Drop:
        dropEvent(static_cast<QDropEvent *>(e));
        break;

    case QEvent::MouseButtonDblClick:
        mouseDoubleClickEvent(static_cast<QMouseEvent *>(e));
        break;

    case QEvent::MouseButtonPress:
        mousePressEvent(static_cast<QMouseEvent *>(e));
        break;

    case QEvent::MouseButtonRelease:
        mouseReleaseEvent(static_cast<QMouseEvent *>(e));
        break;

    case QEvent::MouseMove:
        mouseMoveEvent(static_cast<QMouseEvent *>(e));
        break;

    case QEvent::Paint:
        paintEvent(static_cast<QPaintEvent *>(e));
        break;

    case QEvent::Resize:
        resizeEvent(static_cast<QResizeEvent *>(e));
        break;

    case QEvent::Wheel:
        {
            QWheelEvent *we = static_cast<QWheelEvent *>(e);

            setFocus();

            if (we->orientation() == Horizontal || we->state() & ShiftButton)
                QApplication::sendEvent(hsb, we);
            else if (we->orientation() == Vertical)
                QApplication::sendEvent(vsb, we);

            break;
        }

    default:
        used = false;
    }

    return used;
}

/*! Reimplementation of the \c QObject function. Always returns \p false (meaning event is \e not
  handled and should be forwarded to the \p qglviewer).

  When EventRecorder isRecording(), the following \c QEvent::type are recorded in an internal data
  structure: \c KeyPress, \c KeyRelease, \c MouseButtonPress, \c MouseButtonRelease, \c
  MouseButtonDblClick, \c MouseMove, \c Wheel and \c Timer (used by QGLViewer::animate()). Does
  nothing when isRecording() is \c false.

  You may overload this method to filter other \c QEvent::type (your implementation should probably
  call this function).

  Other specific events can be recorded using recordFrameState() and recordCustomEvent(). */
bool EventRecorder::eventFilter(QObject *, QEvent *e)
{
  if (isRecording())
    {
      bool record = true;
      switch (e->type())
	{
	case QEvent::KeyPress:
	case QEvent::KeyRelease:
	  {
	    QKeyEvent* ke = (QKeyEvent*)(e);
	    eventRecords_[eventIndex_].event.keyEvent = new QKeyEvent(e->type(), ke->key(), ke->ascii(), int(ke->state()));
	    break;
	  }
	case QEvent::MouseButtonPress:
	case QEvent::MouseButtonRelease:
	case QEvent::MouseButtonDblClick:
	case QEvent::MouseMove:
	  {
	    QMouseEvent* me = (QMouseEvent*)(e);
	    eventRecords_[eventIndex_].event.mouseEvent = new QMouseEvent(e->type(), me->pos(), int(me->button()), int(me->state()));
	    break;
	  }
	case QEvent::Wheel:
	  {
	    QWheelEvent* we = (QWheelEvent*)(e);
	    eventRecords_[eventIndex_].event.wheelEvent = new QWheelEvent(we->pos(), we->delta(), int(we->state()));
	    break;
	  }
	case QEvent::Timer:
	  {
	    eventRecords_[eventIndex_].event.keyEvent = NULL; // or any other pointer
	    break;
	  }
	default:
	    record = false;
	  break;
	}

      if (record)
	{
	  eventRecords_[eventIndex_].type = e->type();
	  eventRecords_[eventIndex_].time = time_.elapsed();
	  eventIndex_++;
	}
    }
  return false;
}