51     \ingroup graphicsview-api

    51     \ingroup graphicsview-api

    52 

    52 

    53 

    53 

    54     QGraphicsView visualizes the contents of a QGraphicsScene in a scrollable

    54     QGraphicsView visualizes the contents of a QGraphicsScene in a scrollable

    55     viewport. To create a scene with geometrical items, see QGraphicsScene's

    55     viewport. To create a scene with geometrical items, see QGraphicsScene's

    57 

    57 

    58     To visualize a scene, you start by constructing a QGraphicsView object,

    58     To visualize a scene, you start by constructing a QGraphicsView object,

    59     passing the address of the scene you want to visualize to QGraphicsView's

    59     passing the address of the scene you want to visualize to QGraphicsView's

    60     constructor. Alternatively, you can call setScene() to set the scene at a

    60     constructor. Alternatively, you can call setScene() to set the scene at a

    61     later point. After you call show(), the view will by default scroll to the

    61     later point. After you call show(), the view will by default scroll to the

  2686 

  2686 

  2687     // enable touch events if any items is interested in them

  2687     // enable touch events if any items is interested in them

  2688     if (d->scene && !d->scene->d_func()->allItemsIgnoreTouchEvents)

  2688     if (d->scene && !d->scene->d_func()->allItemsIgnoreTouchEvents)

  2689         widget->setAttribute(Qt::WA_AcceptTouchEvents);

  2689         widget->setAttribute(Qt::WA_AcceptTouchEvents);

  2690 

  2690 

  2691     if (d->scene) {

  2692     if (d->scene) {

  2692         foreach (Qt::GestureType gesture, d->scene->d_func()->grabbedGestures.keys())

  2693         foreach (Qt::GestureType gesture, d->scene->d_func()->grabbedGestures.keys())

  2693             widget->grabGesture(gesture);

  2694             widget->grabGesture(gesture);

  2694     }

  2695     }

  2695 

  2697 

  2696     widget->setAcceptDrops(acceptDrops());

  2698     widget->setAcceptDrops(acceptDrops());

  2697 }

  2699 }

  2698 

  2700 

  2699 /*!

  2701 /*!

  2836             (void) QApplication::sendEvent(d->scene, touchEvent);

  2838             (void) QApplication::sendEvent(d->scene, touchEvent);

  2837         }

  2839         }

  2838 

  2840 

  2839         return true;

  2841         return true;

  2840     }

  2842     }

  2841     case QEvent::Gesture:

  2844     case QEvent::Gesture:

  2842     case QEvent::GestureOverride:

  2845     case QEvent::GestureOverride:

  2843     {

  2846     {

  2844         if (!isEnabled())

  2847         if (!isEnabled())

  2845             return false;

  2848             return false;

  2849             gestureEvent->setWidget(viewport());

  2852             gestureEvent->setWidget(viewport());

  2850             (void) QApplication::sendEvent(d->scene, gestureEvent);

  2853             (void) QApplication::sendEvent(d->scene, gestureEvent);

  2851         }

  2854         }

  2852         return true;

  2855         return true;

  2853     }

  2856     }

  2854     default:

  2858     default:

  2855         break;

  2859         break;

  2856     }

  2860     }

  2857 

  2861 

  2858     return QAbstractScrollArea::viewportEvent(event);

  2862     return QAbstractScrollArea::viewportEvent(event);