diff options
Diffstat (limited to 'src/gui/graphicsview/qgraphicsview.cpp')
| -rw-r--r-- | src/gui/graphicsview/qgraphicsview.cpp | 119 |
1 files changed, 112 insertions, 7 deletions
diff --git a/src/gui/graphicsview/qgraphicsview.cpp b/src/gui/graphicsview/qgraphicsview.cpp index e4decf9..995f3f3 100644 --- a/src/gui/graphicsview/qgraphicsview.cpp +++ b/src/gui/graphicsview/qgraphicsview.cpp @@ -284,8 +284,12 @@ static const int QGRAPHICSVIEW_PREALLOC_STYLE_OPTIONS = 503; // largest prime < #include <private/qt_x11_p.h> #endif +#include <private/qevent_p.h> + QT_BEGIN_NAMESPACE +bool qt_sendSpontaneousEvent(QObject *receiver, QEvent *event); + inline int q_round_bound(qreal d) //### (int)(qreal) INT_MAX != INT_MAX for single precision { if (d <= (qreal) INT_MIN) @@ -295,6 +299,23 @@ inline int q_round_bound(qreal d) //### (int)(qreal) INT_MAX != INT_MAX for sing return d >= 0.0 ? int(d + 0.5) : int(d - int(d-1) + 0.5) + int(d-1); } +void QGraphicsViewPrivate::translateTouchEvent(QGraphicsViewPrivate *d, QTouchEvent *touchEvent) +{ + QList<QTouchEvent::TouchPoint> touchPoints = touchEvent->touchPoints(); + for (int i = 0; i < touchPoints.count(); ++i) { + QTouchEvent::TouchPoint &touchPoint = touchPoints[i]; + // the scene will set the item local pos, startPos, lastPos, and rect before delivering to + // an item, but for now those functions are returning the view's local coordinates + touchPoint.setSceneRect(d->mapToScene(touchPoint.rect())); + touchPoint.setStartScenePos(d->mapToScene(touchPoint.startPos())); + touchPoint.setLastScenePos(d->mapToScene(touchPoint.lastPos())); + + // screenPos, startScreenPos, lastScreenPos, and screenRect are already set + } + + touchEvent->setTouchPoints(touchPoints); +} + /*! \internal */ @@ -591,7 +612,10 @@ void QGraphicsViewPrivate::mouseMoveEventHandler(QMouseEvent *event) lastMouseMoveScenePoint = mouseEvent.scenePos(); lastMouseMoveScreenPoint = mouseEvent.screenPos(); mouseEvent.setAccepted(false); - QApplication::sendEvent(scene, &mouseEvent); + if (event->spontaneous()) + qt_sendSpontaneousEvent(scene, &mouseEvent); + else + QApplication::sendEvent(scene, &mouseEvent); // Remember whether the last event was accepted or not. lastMouseEvent.setAccepted(mouseEvent.isAccepted()); @@ -1456,7 +1480,7 @@ void QGraphicsView::setScene(QGraphicsScene *scene) this, SLOT(updateScene(QList<QRectF>))); disconnect(d->scene, SIGNAL(sceneRectChanged(QRectF)), this, SLOT(updateSceneRect(QRectF))); - d->scene->d_func()->views.removeAll(this); + d->scene->d_func()->removeView(this); d->connectedToScene = false; } @@ -1465,7 +1489,7 @@ void QGraphicsView::setScene(QGraphicsScene *scene) connect(d->scene, SIGNAL(sceneRectChanged(QRectF)), this, SLOT(updateSceneRect(QRectF))); d->updateSceneSlotReimplementedChecked = false; - d->scene->d_func()->views << this; + d->scene->d_func()->addView(this); d->recalculateContentSize(); d->lastCenterPoint = sceneRect().center(); d->keepLastCenterPoint = true; @@ -1475,6 +1499,10 @@ void QGraphicsView::setScene(QGraphicsScene *scene) || !d->scene->d_func()->allItemsUseDefaultCursor) { d->viewport->setMouseTracking(true); } + + // enable touch events if any items is interested in them + if (!d->scene->d_func()->allItemsIgnoreTouchEvents) + d->viewport->setAttribute(Qt::WA_AcceptTouchEvents); } else { d->recalculateContentSize(); } @@ -2488,6 +2516,11 @@ void QGraphicsView::setupViewport(QWidget *widget) || !d->scene->d_func()->allItemsUseDefaultCursor)) { widget->setMouseTracking(true); } + + // enable touch events if any items is interested in them + if (d->scene && !d->scene->d_func()->allItemsIgnoreTouchEvents) + widget->setAttribute(Qt::WA_AcceptTouchEvents); + widget->setAcceptDrops(acceptDrops()); } @@ -2524,6 +2557,9 @@ bool QGraphicsView::event(QEvent *event) } } break; + case QEvent::Gesture: + viewportEvent(event); + return true; default: break; } @@ -2605,6 +2641,34 @@ bool QGraphicsView::viewportEvent(QEvent *event) d->scene->d_func()->updateAll = false; } break; + case QEvent::Gesture: { + QGraphicsSceneGestureEvent gestureEvent; + gestureEvent.setWidget(this); + QGestureEvent *ev = static_cast<QGestureEvent*>(event); + gestureEvent.setGestures(ev->gestures()); + gestureEvent.setCancelledGestures(ev->cancelledGestures()); + QApplication::sendEvent(d->scene, &gestureEvent); + event->setAccepted(gestureEvent.isAccepted()); + return true; + } + break; + case QEvent::TouchBegin: + case QEvent::TouchUpdate: + case QEvent::TouchEnd: + { + if (!isEnabled()) + return false; + + if (d->scene && d->sceneInteractionAllowed) { + // Convert and deliver the touch event to the scene. + QTouchEvent *touchEvent = static_cast<QTouchEvent *>(event); + touchEvent->setWidget(viewport()); + QGraphicsViewPrivate::translateTouchEvent(d, touchEvent); + (void) QApplication::sendEvent(d->scene, touchEvent); + } + + return true; + } default: break; } @@ -2863,7 +2927,10 @@ void QGraphicsView::mouseDoubleClickEvent(QMouseEvent *event) mouseEvent.setAccepted(false); mouseEvent.setButton(event->button()); mouseEvent.setModifiers(event->modifiers()); - QApplication::sendEvent(d->scene, &mouseEvent); + if (event->spontaneous()) + qt_sendSpontaneousEvent(d->scene, &mouseEvent); + else + QApplication::sendEvent(d->scene, &mouseEvent); } /*! @@ -2902,7 +2969,10 @@ void QGraphicsView::mousePressEvent(QMouseEvent *event) mouseEvent.setButton(event->button()); mouseEvent.setModifiers(event->modifiers()); mouseEvent.setAccepted(false); - QApplication::sendEvent(d->scene, &mouseEvent); + if (event->spontaneous()) + qt_sendSpontaneousEvent(d->scene, &mouseEvent); + else + QApplication::sendEvent(d->scene, &mouseEvent); // Update the original mouse event accepted state. bool isAccepted = mouseEvent.isAccepted(); @@ -3073,7 +3143,10 @@ void QGraphicsView::mouseReleaseEvent(QMouseEvent *event) mouseEvent.setButton(event->button()); mouseEvent.setModifiers(event->modifiers()); mouseEvent.setAccepted(false); - QApplication::sendEvent(d->scene, &mouseEvent); + if (event->spontaneous()) + qt_sendSpontaneousEvent(d->scene, &mouseEvent); + else + QApplication::sendEvent(d->scene, &mouseEvent); // Update the last mouse event selected state. d->lastMouseEvent.setAccepted(mouseEvent.isAccepted()); @@ -3204,7 +3277,6 @@ void QGraphicsView::paintEvent(QPaintEvent *event) // Find all exposed items bool allItems = false; QList<QGraphicsItem *> itemList = d->findItems(d->exposedRegion, &allItems, viewTransform); - if (!itemList.isEmpty()) { // Generate the style options. const int numItems = itemList.size(); @@ -3532,6 +3604,39 @@ void QGraphicsView::resetTransform() setTransform(QTransform()); } +QPointF QGraphicsViewPrivate::mapToScene(const QPointF &point) const +{ + QPointF p = point; + p.rx() += horizontalScroll(); + p.ry() += verticalScroll(); + return identityMatrix ? p : matrix.inverted().map(p); +} + +QRectF QGraphicsViewPrivate::mapToScene(const QRectF &rect) const +{ + QPointF scrollOffset(horizontalScroll(), verticalScroll()); + QPointF tl = scrollOffset + rect.topLeft(); + QPointF tr = scrollOffset + rect.topRight(); + QPointF br = scrollOffset + rect.bottomRight(); + QPointF bl = scrollOffset + rect.bottomLeft(); + + QPolygonF poly; + poly.resize(4); + if (!identityMatrix) { + QTransform x = matrix.inverted(); + poly[0] = x.map(tl); + poly[1] = x.map(tr); + poly[2] = x.map(br); + poly[3] = x.map(bl); + } else { + poly[0] = tl; + poly[1] = tr; + poly[2] = br; + poly[3] = bl; + } + return poly.boundingRect(); +} + QT_END_NAMESPACE #include "moc_qgraphicsview.cpp" |