Esempio n. 1
0
void Widget::traverseImplementation(osg::NodeVisitor& nv)
{
    if (!_graphicsInitialized && nv.getVisitorType()!=osg::NodeVisitor::CULL_VISITOR) createGraphics();


    osgGA::EventVisitor* ev = nv.asEventVisitor();
    if (ev)
    {
        updateFocus(nv);

        if (getHasEventFocus())
        {
            // signify that event has been taken by widget with focus
            ev->setEventHandled(true);

            osgGA::EventQueue::Events& events = ev->getEvents();
            for(osgGA::EventQueue::Events::iterator itr = events.begin();
                itr != events.end();
                ++itr)
            {
                if (handle(ev, itr->get()))
                {
                    (*itr)->setHandled(true);
                }
            }
        }
    }
    else
    {
        osg::Group::traverse(nv);
    }
}
Esempio n. 2
0
void Dragger::traverse(osg::NodeVisitor& nv)
{
    if (_handleEvents && nv.getVisitorType()==osg::NodeVisitor::EVENT_VISITOR)
    {
        osgGA::EventVisitor* ev = nv.asEventVisitor();
        if (ev)
        {
            for(osgGA::EventQueue::Events::iterator itr = ev->getEvents().begin();
                itr != ev->getEvents().end();
                ++itr)
            {
                osgGA::GUIEventAdapter* ea = (*itr)->asGUIEventAdapter();
                if (ea && handle(*ea, *(ev->getActionAdapter()))) ea->setHandled(true);
            }
        }
        return;
    }

    MatrixTransform::traverse(nv);
}
Esempio n. 3
0
void Widget::updateFocus(osg::NodeVisitor& nv)
{
    osgGA::EventVisitor* ev = nv.asEventVisitor();
    osgGA::GUIActionAdapter* aa = ev ? ev->getActionAdapter() : 0;
    if (ev && aa)
    {
        osgGA::EventQueue::Events& events = ev->getEvents();
        for(osgGA::EventQueue::Events::iterator itr = events.begin();
            itr != events.end();
            ++itr)
        {
            osgGA::GUIEventAdapter* ea = (*itr)->asGUIEventAdapter();
            if (ea)
            {
                bool previousFocus = _hasEventFocus;
                if (_focusBehaviour==CLICK_TO_FOCUS)
                {
                    if (ea->getEventType()==osgGA::GUIEventAdapter::PUSH)
                    {
                        int numButtonsPressed = 0;
                        if (ea->getButtonMask()&osgGA::GUIEventAdapter::LEFT_MOUSE_BUTTON) ++numButtonsPressed;
                        if (ea->getButtonMask()&osgGA::GUIEventAdapter::MIDDLE_MOUSE_BUTTON) ++numButtonsPressed;
                        if (ea->getButtonMask()&osgGA::GUIEventAdapter::RIGHT_MOUSE_BUTTON) ++numButtonsPressed;

                        if (numButtonsPressed==1)
                        {
                            osgUtil::LineSegmentIntersector::Intersections intersections;
                            bool withinWidget = aa->computeIntersections(*ea, nv.getNodePath(), intersections);
                            if (withinWidget) _hasEventFocus = true;
                            else _hasEventFocus = false;
                        }
                    }
                }
                else if (_focusBehaviour==FOCUS_FOLLOWS_POINTER)
                {
                    bool checkWithinWidget = false;
                    if (!_hasEventFocus)
                    {
                        checkWithinWidget = (ea->getEventType()!=osgGA::GUIEventAdapter::FRAME) && ea->getButtonMask()==0;
                    }
                    else
                    {
                        // if mouse move or mouse release check to see if mouse still within widget to retain focus
                        if (ea->getEventType()==osgGA::GUIEventAdapter::MOVE)
                        {
                            checkWithinWidget = true;
                        }
                        else if (ea->getEventType()==osgGA::GUIEventAdapter::RELEASE)
                        {
                            // if no buttons pressed then check
                            if (ea->getButtonMask()==0) checkWithinWidget = true;
                        }
                    }

                    if (checkWithinWidget)
                    {
                        osgUtil::LineSegmentIntersector::Intersections intersections;
                        bool withinWidget = aa->computeIntersections(*ea, nv.getNodePath(), intersections);

                        _hasEventFocus = withinWidget;
                    }
                }

                if (previousFocus != _hasEventFocus)
                {
                    if (_hasEventFocus)
                    {
                        enter();
#if 0
                        if (view->getCameraManipulator())
                        {
                            view->getCameraManipulator()->finishAnimation();
                            view->requestContinuousUpdate( false );
                        }
#endif
                    }
                    else
                    {
                        leave();
                    }
                }

            }
        }
    }
}
Esempio n. 4
0
void Widget::updateFocus(osg::NodeVisitor& nv)
{
    osgGA::EventVisitor* ev = nv.asEventVisitor();
    osgGA::GUIActionAdapter* aa = ev ? ev->getActionAdapter() : 0;
    if (ev && aa)
    {
        // OSG_NOTICE<<"updateFocus"<<std::endl;

        osgGA::EventQueue::Events& events = ev->getEvents();
        for(osgGA::EventQueue::Events::iterator itr = events.begin();
            itr != events.end();
            ++itr)
        {
            osgGA::GUIEventAdapter* ea = (*itr)->asGUIEventAdapter();
            if (ea)
            {
                int numButtonsPressed = 0;
                if (ea->getEventType()==osgGA::GUIEventAdapter::PUSH)
                {
                    if (ea->getButtonMask()&osgGA::GUIEventAdapter::LEFT_MOUSE_BUTTON) ++numButtonsPressed;
                    if (ea->getButtonMask()&osgGA::GUIEventAdapter::MIDDLE_MOUSE_BUTTON) ++numButtonsPressed;
                    if (ea->getButtonMask()&osgGA::GUIEventAdapter::RIGHT_MOUSE_BUTTON) ++numButtonsPressed;
                }

                bool previousFocus = _hasEventFocus;
                if (_focusBehaviour==CLICK_TO_FOCUS)
                {
                    if (ea->getEventType()==osgGA::GUIEventAdapter::PUSH)
                    {
                        if (numButtonsPressed==1)
                        {
                            osg::Vec3d intersection;
                            bool withinWidget = computeExtentsPositionInLocalCoordinates(ev, ea, intersection);

                            if (withinWidget) _hasEventFocus = true;
                            else _hasEventFocus = false;
                        }
                    }
                }
                else if (_focusBehaviour==FOCUS_FOLLOWS_POINTER)
                {
                    bool checkWithinWidget = false;
                    if (!_hasEventFocus)
                    {
                        checkWithinWidget = (ea->getEventType()!=osgGA::GUIEventAdapter::FRAME) && ea->getButtonMask()==0;
                    }
                    else
                    {
                        // if mouse move or mouse release check to see if mouse still within widget to retain focus
                        if (ea->getEventType()==osgGA::GUIEventAdapter::MOVE)
                        {
                            checkWithinWidget = true;
                        }
                        else if (ea->getEventType()==osgGA::GUIEventAdapter::RELEASE)
                        {
                            // if no buttons pressed then check
                            if (ea->getButtonMask()==0) checkWithinWidget = true;
                        }
                    }

                    if (checkWithinWidget)
                    {
                        osg::Vec3d intersection;
                        bool withinWidget = computeExtentsPositionInLocalCoordinates(ev, ea, intersection);

                        _hasEventFocus = withinWidget;
                    }
                }

                if (_hasEventFocus && (ea->getEventType()==osgGA::GUIEventAdapter::PUSH || ea->getEventType()==osgGA::GUIEventAdapter::SCROLL) )
                {
                    osgViewer::View* view = dynamic_cast<osgViewer::View*>(aa);
                    if (view && view->getCameraManipulator())
                    {
                        view->getCameraManipulator()->finishAnimation();
                        view->requestContinuousUpdate( false );
                    }
                }


                if (previousFocus != _hasEventFocus)
                {
                    if (_hasEventFocus)
                    {
                        enter();

                    }
                    else
                    {
                        leave();
                    }
                }

            }
        }
    }
}
Esempio n. 5
0
void Widget::traverseImplementation(osg::NodeVisitor& nv)
{
    if (!_graphicsInitialized && nv.getVisitorType()!=osg::NodeVisitor::CULL_VISITOR) createGraphics();

    osgGA::EventVisitor* ev = nv.asEventVisitor();
    if (ev)
    {
        if (_visible && _enabled)
        {

            updateFocus(nv);

            // OSG_NOTICE<<"EventTraversal getHasEventFocus()="<<getHasEventFocus()<<std::endl;

            // signify that event has been taken by widget with focus

            bool widgetsWithFocusSetHandled = getHasEventFocus();

            osgGA::EventQueue::Events& events = ev->getEvents();
            for(osgGA::EventQueue::Events::iterator itr = events.begin();
                itr != events.end();
                ++itr)
            {
                if (handle(ev, itr->get()) || widgetsWithFocusSetHandled)
                {
                    (*itr)->setHandled(true);
                    ev->setEventHandled(true);
                }
            }

            GraphicsSubgraphMap::iterator itr = _graphicsSubgraphMap.begin();
            while(itr!= _graphicsSubgraphMap.end() && itr->first<=0)
            {
                itr->second->accept(nv);
                ++itr;
            }

            osg::Group::traverse(nv);

            while(itr!= _graphicsSubgraphMap.end())
            {
                itr->second->accept(nv);
                ++itr;
            }

        }
    }
    else if (_visible ||
            (nv.getVisitorType()!=osg::NodeVisitor::UPDATE_VISITOR && nv.getVisitorType()!=osg::NodeVisitor::CULL_VISITOR && nv.getVisitorType()!=osg::NodeVisitor::INTERSECTION_VISITOR) )
    {
        osgUtil::CullVisitor* cv = (nv.getVisitorType()==osg::NodeVisitor::CULL_VISITOR) ? nv.asCullVisitor() : 0;
        if (cv && _widgetStateSet.valid()) cv->pushStateSet(_widgetStateSet.get());

        GraphicsSubgraphMap::iterator itr = _graphicsSubgraphMap.begin();
        while(itr!= _graphicsSubgraphMap.end() && itr->first<=0)
        {
            itr->second->accept(nv);
            ++itr;
        }

        Group::traverse(nv);

        while(itr!= _graphicsSubgraphMap.end())
        {
            itr->second->accept(nv);
            ++itr;
        }

        if (cv && _widgetStateSet.valid()) cv->popStateSet();
    }
}