85 lines
2.4 KiB
C
85 lines
2.4 KiB
C
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/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2013 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*/
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#ifndef OSGUI_WIDGET
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#define OSGUI_WIDGET
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#include <osg/Group>
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#include <osg/BoundingBox>
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#include <osgGA/Event>
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#include <osgGA/EventVisitor>
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#define OSGUI_EXPORT
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namespace osgUI
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{
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class OSGUI_EXPORT Widget : public osg::Group
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{
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public:
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Widget();
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Widget(const Widget& tfw, const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);
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META_Node(osgUI, Widget);
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virtual void traverse(osg::NodeVisitor& nv);
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virtual bool handle(osgGA::EventVisitor* ev, osgGA::Event* event);
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virtual bool computePositionInLocalCoordinates(osgGA::EventVisitor* ev, osgGA::GUIEventAdapter* event, osg::Vec3& localPosition) const;
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virtual void createGraphics();
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virtual void setExtents(const osg::BoundingBox& bb);
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const osg::BoundingBox& getExtents() const { return _extents; }
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enum FocusBehaviour
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{
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CLICK_TO_FOCUS,
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FOCUS_FOLLOWS_POINTER,
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EVENT_DRIVEN_FOCUS_DISABLED
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};
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void setFocusBehaviour(FocusBehaviour behaviour) { _focusBehaviour = behaviour; }
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FocusBehaviour getFocusBehaviour() const { return _focusBehaviour; }
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/** update the focus according to events.*/
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virtual void updateFocus(osg::NodeVisitor& nv);
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/** set whether the widget has focus or not.*/
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virtual void setHasEventFocus(bool focus);
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/** get whether the widget has focus or not.*/
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virtual bool getHasEventFocus() const;
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virtual osg::BoundingSphere computeBound() const;
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protected:
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virtual ~Widget() {}
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/** update any focus related graphics+state to the focused state.*/
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virtual void enter();
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/** update any focus related graphics+state to the unfocused state.*/
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virtual void leave();
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FocusBehaviour _focusBehaviour;
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bool _hasEventFocus;
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bool _graphicsInitialized;
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osg::BoundingBox _extents;
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};
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}
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#endif
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