123 lines
4.2 KiB
C++
123 lines
4.2 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 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 OSGDB_DOTOSGWRAPPER
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#define OSGDB_DOTOSGWRAPPER 1
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#include <osg/ref_ptr>
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#include <osg/Object>
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#include <osgDB/Input>
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#include <osgDB/Output>
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#include <string>
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#include <vector>
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namespace osgDB {
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/** Wrapper class for specifying read and write functions for extending
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* the .osg file format. */
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class OSGDB_EXPORT DotOsgWrapper : public osg::Referenced
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{
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public:
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typedef std::vector<std::string> Associates;
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typedef bool (*ReadFunc)(osg::Object&,osgDB::Input&);
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typedef bool (*WriteFunc)(const osg::Object&,osgDB::Output&);
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enum ReadWriteMode
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{
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READ_AND_WRITE,
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READ_ONLY
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};
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DotOsgWrapper(osg::Object* proto,
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const std::string& name,
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const std::string& associates,
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ReadFunc readFunc,
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WriteFunc writeFunc,
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ReadWriteMode readWriteMode=READ_AND_WRITE);
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inline const osg::Object* getPrototype() const { return _prototype.get(); }
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inline const std::string& getName() const { return _name; }
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inline const Associates& getAssociates() const { return _associates; }
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inline ReadFunc getReadFunc() const { return _readFunc; }
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inline WriteFunc getWriteFunc() const { return _writeFunc; }
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inline ReadWriteMode getReadWriteMode() const { return _readWriteMode; }
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protected:
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/// protected to prevent inappropriate creation of wrappers.
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DotOsgWrapper() {}
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/// protected to prevent inappropriate creation of wrappers.
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DotOsgWrapper(DotOsgWrapper&):osg::Referenced() {}
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/// protected to prevent wrapper being created on stack.
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virtual ~DotOsgWrapper() {}
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osg::ref_ptr<osg::Object> _prototype;
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std::string _name;
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Associates _associates;
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ReadFunc _readFunc;
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WriteFunc _writeFunc;
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ReadWriteMode _readWriteMode;
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};
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/** Proxy class for automatic registration of DotOsgWrappers with the Registry.*/
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class OSGDB_EXPORT RegisterDotOsgWrapperProxy
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{
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public:
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RegisterDotOsgWrapperProxy(osg::Object* proto,
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const std::string& name,
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const std::string& associates,
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DotOsgWrapper::ReadFunc readFunc,
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DotOsgWrapper::WriteFunc writeFunc,
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DotOsgWrapper::ReadWriteMode readWriteMode=DotOsgWrapper::READ_AND_WRITE);
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~RegisterDotOsgWrapperProxy();
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protected:
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osg::ref_ptr<DotOsgWrapper> _wrapper;
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};
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template<class T>
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class OSGDB_EXPORT TemplateRegisterDotOsgWrapperProxy : public RegisterDotOsgWrapperProxy, public T
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{
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public:
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TemplateRegisterDotOsgWrapperProxy(osg::Object* proto,
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const std::string& name,
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const std::string& associates,
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DotOsgWrapper::ReadFunc readFunc,
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DotOsgWrapper::WriteFunc writeFunc,
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DotOsgWrapper::ReadWriteMode readWriteMode=DotOsgWrapper::READ_AND_WRITE):
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RegisterDotOsgWrapperProxy(proto, name, associates, readFunc, writeFunc, readWriteMode) {}
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};
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#define REGISTER_DOTOSGWRAPPER(classname) \
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extern "C" void dotosgwrapper_##classname(void) {} \
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static osgDB::RegisterDotOsgWrapperProxy dotosgwrapper_proxy_##classname
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}
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#endif
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