bool QGLGraphicsNavigationItemPrivate::handleHover(QGraphicsSceneHoverEvent *e)
{
if (!panning && (viewportItem->options() &
QGLGraphicsViewportItem::ObjectPicking) != 0) {
QObject *object = viewportItem->objectForPosition(e->pos());
if (pressedObject) {
// Send the move event to the pressed object. Use a position
// of (0, 0) if the mouse is still within the pressed object,
// or (-1, -1) if the mouse is no longer within the pressed object.
QMouseEvent event
(QEvent::MouseMove,
(pressedObject == object) ? QPoint(0, 0) : QPoint(-1, -1),
e->screenPos(), Qt::NoButton, Qt::NoButton, e->modifiers());
QCoreApplication::sendEvent(pressedObject, &event);
} else if (object) {
if (object != enteredObject) {
if (enteredObject)
sendLeaveEvent(enteredObject);
enteredObject = object;
sendEnterEvent(enteredObject);
}
QMouseEvent event
(QEvent::MouseMove, QPoint(0, 0),
e->screenPos(), Qt::NoButton, Qt::NoButton, e->modifiers());
QCoreApplication::sendEvent(object, &event);
} else if (enteredObject) {
sendLeaveEvent(enteredObject);
enteredObject = 0;
}
return true;
}
return false;
}
/*!
Processes the mouse move event \a e.
*/
void QGLView::mouseMoveEvent(QMouseEvent *e)
{
if (d->panning) {
QPoint delta = e->pos() - d->startPan;
if (e->modifiers() == d->panModifiers) {
d->camera->setEye(d->startEye);
d->camera->setCenter(d->startCenter);
d->camera->setUpVector(d->startUpVector);
} else {
d->startPan = d->lastPan;
delta = e->pos() - d->startPan;
d->startEye = d->camera->eye();
d->startCenter = d->camera->center();
d->startUpVector = d->camera->upVector();
d->panModifiers = e->modifiers();
}
d->lastPan = e->pos();
if ((e->modifiers() & Qt::ControlModifier) != 0)
wheel(delta.y() * -60);
else if ((e->modifiers() & Qt::ShiftModifier) != 0)
pan(delta.x(), delta.y());
else
rotate(delta.x(), delta.y());
} else if ((d->options & QGLView::ObjectPicking) != 0) {
QObject *object = objectForPoint(e->pos());
if (d->pressedObject) {
// Send the move event to the pressed object. Use a position
// of (0, 0) if the mouse is still within the pressed object,
// or (-1, -1) if the mouse is no longer within the pressed object.
QMouseEvent event
(QEvent::MouseMove,
(d->pressedObject == object) ? QPoint(0, 0) : QPoint(-1, -1),
e->globalPos(), e->button(), e->buttons(), e->modifiers());
QCoreApplication::sendEvent(d->pressedObject, &event);
} else if (object) {
if (object != d->enteredObject) {
if (d->enteredObject)
sendLeaveEvent(d->enteredObject);
d->enteredObject = object;
sendEnterEvent(d->enteredObject);
}
QMouseEvent event
(QEvent::MouseMove, QPoint(0, 0),
e->globalPos(), e->button(), e->buttons(), e->modifiers());
QCoreApplication::sendEvent(object, &event);
} else if (d->enteredObject) {
sendLeaveEvent(d->enteredObject);
d->enteredObject = 0;
}
}
QGLWidget::mouseMoveEvent(e);
}
/*!
Processes the leave event \a e.
*/
void QGLView::leaveEvent(QEvent *e)
{
if (!d->pressedObject && d->enteredObject) {
sendLeaveEvent(d->enteredObject);
d->enteredObject = 0;
}
QGLWidget::leaveEvent(e);
}
bool QGLGraphicsNavigationItemPrivate::handleHoverLeave()
{
if (!pressedObject && enteredObject) {
sendLeaveEvent(enteredObject);
enteredObject = 0;
return true;
} else {
return false;
}
}
bool QGLGraphicsNavigationItemPrivate::handleMouseMove(QGraphicsSceneMouseEvent *e)
{
if (panning) {
QPointF delta = e->pos() - startPan;
startPan = e->pos();
if ((e->modifiers() & Qt::ControlModifier) != 0)
wheel(delta.y() * -60);
else if ((e->modifiers() & Qt::ShiftModifier) != 0)
pan(delta.x(), delta.y());
else
rotate(delta.x(), delta.y());
} else if ((viewportItem->options() &
QGLGraphicsViewportItem::ObjectPicking) != 0) {
QObject *object = viewportItem->objectForPosition(e->pos());
if (pressedObject) {
// Send the move event to the pressed object. Use a position
// of (0, 0) if the mouse is still within the pressed object,
// or (-1, -1) if the mouse is no longer within the pressed object.
QMouseEvent event
(QEvent::MouseMove,
(pressedObject == object) ? QPoint(0, 0) : QPoint(-1, -1),
e->screenPos(), e->button(), e->buttons(), e->modifiers());
QCoreApplication::sendEvent(pressedObject, &event);
} else if (object) {
if (object != enteredObject) {
if (enteredObject)
sendLeaveEvent(enteredObject);
enteredObject = object;
sendEnterEvent(enteredObject);
}
QMouseEvent event
(QEvent::MouseMove, QPoint(0, 0),
e->screenPos(), e->button(), e->buttons(), e->modifiers());
QCoreApplication::sendEvent(object, &event);
} else if (enteredObject) {
sendLeaveEvent(enteredObject);
enteredObject = 0;
}
} else {
return false;
}
return true;
}
/*!
Processes the mouse release event \a e.
*/
void QGLView::mouseReleaseEvent(QMouseEvent *e)
{
if (d->panning && e->button() == Qt::LeftButton) {
d->panning = false;
#ifndef QT_NO_CURSOR
unsetCursor();
#endif
}
if (d->pressedObject) {
// Notify the previously pressed object about the release.
QObject *object = objectForPoint(e->pos());
QObject *pressed = d->pressedObject;
if (e->button() == d->pressedButton) {
d->pressedObject = 0;
d->pressedButton = Qt::NoButton;
d->enteredObject = object;
// Send the release event to the pressed object. Use a position
// of (0, 0) if the mouse is still within the pressed object,
// or (-1, -1) if the mouse is no longer within the pressed object.
QMouseEvent event
(QEvent::MouseButtonRelease,
(pressed == object) ? QPoint(0, 0) : QPoint(-1, -1),
e->globalPos(), e->button(), e->buttons(), e->modifiers());
QCoreApplication::sendEvent(pressed, &event);
// Send leave and enter events if necessary.
if (object != pressed) {
sendLeaveEvent(pressed);
if (object)
sendEnterEvent(object);
}
} else {
// Some other button than the original was released.
// Forward the event to the pressed object.
QMouseEvent event
(QEvent::MouseButtonRelease,
(pressed == object) ? QPoint(0, 0) : QPoint(-1, -1),
e->globalPos(), e->button(), e->buttons(), e->modifiers());
QCoreApplication::sendEvent(pressed, &event);
}
}
QGLWidget::mouseReleaseEvent(e);
}
bool QGLGraphicsNavigationItemPrivate::handleMouseRelease(QGraphicsSceneMouseEvent *e)
{
if (panning && e->button() == Qt::LeftButton) {
panning = false;
#ifndef QT_NO_CURSOR
viewportItem->unsetCursor();
#endif
}
if (pressedObject) {
// Notify the previously pressed object about the release.
QObject *object = viewportItem->objectForPosition(e->pos());
QObject *pressed = pressedObject;
if (e->button() == pressedButton) {
pressedObject = 0;
pressedButton = Qt::NoButton;
enteredObject = object;
// Send the release event to the pressed object. Use a position
// of (0, 0) if the mouse is still within the pressed object,
// or (-1, -1) if the mouse is no longer within the pressed object.
QMouseEvent event
(QEvent::MouseButtonRelease,
(pressed == object) ? QPoint(0, 0) : QPoint(-1, -1),
e->screenPos(), e->button(), e->buttons(), e->modifiers());
QCoreApplication::sendEvent(pressed, &event);
// Send leave and enter events if necessary.
if (object != pressed) {
sendLeaveEvent(pressed);
if (object)
sendEnterEvent(object);
}
} else {
// Some other button than the original was released.
// Forward the event to the pressed object.
QMouseEvent event
(QEvent::MouseButtonRelease,
(pressed == object) ? QPoint(0, 0) : QPoint(-1, -1),
e->screenPos(), e->button(), e->buttons(), e->modifiers());
QCoreApplication::sendEvent(pressed, &event);
}
}
return true;
}
