# include "config.h"
#endif
-#include <memory>
-#include <string.h>
-
#include "NasalCanvas.hxx"
#include <Canvas/canvas_mgr.hxx>
#include <Main/globals.hxx>
+#include <Scripting/NasalSys.hxx>
-//#include <boost/python.hpp>
-#include <boost/foreach.hpp>
-#include <boost/function.hpp>
-#include <boost/utility/enable_if.hpp>
-#include <boost/algorithm/string/case_conv.hpp>
-#include <boost/make_shared.hpp>
#include <osgGA/GUIEventAdapter>
#include <simgear/sg_inlines.h>
#include <simgear/canvas/Canvas.hxx>
#include <simgear/canvas/elements/CanvasElement.hxx>
+#include <simgear/nasal/cppbind/from_nasal.hxx>
#include <simgear/nasal/cppbind/to_nasal.hxx>
#include <simgear/nasal/cppbind/NasalHash.hxx>
+#include <simgear/nasal/cppbind/Ghost.hxx>
extern naRef propNodeGhostCreate(naContext c, SGPropertyNode* n);
-//void initCanvasPython()
-//{
-// using namespace boost::python;
-// class_<simgear::canvas::Canvas>("Canvas");
-//}
-
namespace sc = simgear::canvas;
-naRef canvasGetNode(naContext c, sc::Canvas* canvas)
+template<class Element>
+naRef elementGetNode(naContext c, Element& element)
{
- return propNodeGhostCreate(c, canvas->getProps());
+ return propNodeGhostCreate(c, element.getProps());
}
-namespace nasal
-{
-
- template<class T>
- struct class_traits
- {
- typedef boost::false_type::type is_shared;
- typedef T raw_type;
- };
-
- template<class T>
- struct class_traits<boost::shared_ptr<T> >
- {
- typedef boost::true_type::type is_shared;
- typedef T raw_type;
- };
-
- template<class T>
- struct class_traits<osg::ref_ptr<T> >
- {
- typedef boost::true_type::type is_shared;
- typedef T raw_type;
- };
-
- template<class T>
- struct class_traits<SGSharedPtr<T> >
- {
- typedef boost::true_type::type is_shared;
- typedef T raw_type;
- };
-
- template<class T>
- struct SharedPointerPolicy
- {
- typedef typename class_traits<T>::raw_type raw_type;
-
- /**
- * Create a shared pointer on the heap to handle the reference counting for
- * the passed shared pointer while it is used in Nasal space.
- */
- static T* createInstance(const T& ptr)
- {
- return new T(ptr);
- }
-
- static raw_type* getRawPtr(void* ptr)
- {
- return static_cast<T*>(ptr)->get();
- }
- };
-
- template<class T>
- struct RawPointerPolicy
- {
- typedef typename class_traits<T>::raw_type raw_type;
-
- static T* createInstance()
- {
- return new T();
- }
-
- static raw_type* getRawPtr(void* ptr)
- {
- BOOST_STATIC_ASSERT((boost::is_same<raw_type, T>::value));
- return static_cast<T*>(ptr);
- }
- };
-
- class class_metadata
- {
- public:
- void addNasalBase(const naRef& parent)
- {
- assert( naIsHash(parent) );
- _parents.push_back(parent);
- }
-
- protected:
- const std::string _name;
- naGhostType _ghost_type;
- std::vector<class_metadata*> _base_classes;
- std::vector<naRef> _parents;
-
- explicit class_metadata(const std::string& name):
- _name(name)
- {
-
- }
-
- void addBaseClass(class_metadata* base)
- {
- assert(base);
- std::cout << _name << ": addBase(" << base->_name << ")" << std::endl;
- _base_classes.push_back(base);
- }
-
- naRef getParents(naContext c)
- {
- return nasal::to_nasal(c, _parents);
- }
- };
-
- /**
- * Class for exposing C++ objects to Nasal
- */
- template<class T>
- class class_:
- public class_metadata,
- protected boost::mpl::if_< typename class_traits<T>::is_shared,
- SharedPointerPolicy<T>,
- RawPointerPolicy<T> >::type
- {
- private:
- typedef typename class_traits<T>::raw_type raw_type;
-
- public:
-
- typedef boost::function<naRef(naContext c, raw_type*)> getter_t;
- typedef std::map<std::string, getter_t> GetterMap;
-
- static class_& init(const std::string& name)
- {
- getSingletonHolder().reset( new class_(name) );
- return *getSingletonPtr();
- }
-
- static naRef f_create(naContext c, naRef me, int argc, naRef* args)
- {
- return create(c);
- }
-
- static naRef create( naContext c )
- {
- return makeGhost(c, class_::createInstance());
- }
-
- // TODO use variadic template when supporting C++11
- template<class A1>
- static naRef create( naContext c, const A1& a1 )
- {
- return makeGhost(c, class_::createInstance(a1));
- }
-
- class_& bases(const naRef& parent)
- {
- addNasalBase(parent);
- return *this;
- }
-
- template<class Base>
- typename boost::enable_if
- < boost::is_convertible<Base, class_metadata>,
- class_
- >::type&
- bases()
- {
- Base* base = Base::getSingletonPtr();
- addBaseClass( base );
-
- // Replace any getter that is not available in the current class.
- // TODO check if this is the correct behavior of function overriding
- const typename Base::GetterMap& base_getter = base->getGetter();
- for( typename Base::GetterMap::const_iterator getter =
- base_getter.begin();
- getter != base_getter.end();
- ++getter )
- {
- if( _getter.find(getter->first) == _getter.end() )
- _getter.insert( *getter );
- }
-
- return *this;
- }
-
- template<class Type>
- typename boost::enable_if_c
- < !boost::is_convertible< Type, class_metadata>::value,
- class_
- >::type&
- bases()
- {
- return bases< class_<Type> >();
- }
-
- template<class Var>
- class_& member( const std::string& field,
- Var (raw_type::*getter)() const,
- void (raw_type::*setter)(const Var&) = 0 )
- {
- naRef (*to_nasal)(naContext, Var) = &nasal::to_nasal;
- _getter[field] = boost::bind( to_nasal,
- _1,
- boost::bind(getter, _2) );
- return *this;
- }
-
- class_& member( const std::string& field,
- const getter_t& getter )
- {
- _getter[field] = getter;
- return *this;
- }
-
- static class_* getSingletonPtr()
- {
- return getSingletonHolder().get();
- }
-
- const GetterMap& getGetter() const
- {
- return _getter;
- }
-
- private:
-
- typedef std::auto_ptr<class_> class_ptr;
- GetterMap _getter;
-
- explicit class_(const std::string& name):
- class_metadata( name )
- {
- _ghost_type.destroy = &destroyGhost;
- _ghost_type.name = _name.c_str();
- _ghost_type.get_member = &getMember;
- _ghost_type.set_member = 0;
- }
-
- static class_ptr& getSingletonHolder()
- {
- static class_ptr instance;
- return instance;
- }
-
- static naRef makeGhost(naContext c, void *ptr)
- {
- std::cout << "makeGhost " << ptr << std::endl;
- return naNewGhost2(c, &getSingletonPtr()->_ghost_type, ptr);
- }
-
- static void destroyGhost(void *ptr)
- {
- std::cout << "destroyGhost " << ptr << std::endl;
- delete (T*)ptr;
- }
-
- static const char* getMember(naContext c, void* g, naRef field, naRef* out)
- {
- const std::string key = naStr_data(field);
- if( key == "parents" )
- {
- if( getSingletonPtr()->_parents.empty() )
- return 0;
-
- *out = getSingletonPtr()->getParents(c);
- return "";
- }
-
- typename GetterMap::iterator getter =
- getSingletonPtr()->_getter.find(key);
-
- if( getter == getSingletonPtr()->_getter.end() )
- return 0;
-
- *out = getter->second(c, class_::getRawPtr(g));
- return "";
- }
- };
-}
-
-struct Base
-{
- int getInt() const
- {
- return 8;
- }
-};
-
-struct Test:
- public Base
-{
- Test(): x(1) {}
- int x;
-};
-
-typedef nasal::class_<sc::CanvasPtr> NasalCanvas;
-
-void initCanvas()
-{
-
- NasalCanvas::init("Canvas")
- .member("_node_ghost", &canvasGetNode)
- .member("size_x", &sc::Canvas::getSizeX)
- .member("size_y", &sc::Canvas::getSizeY);
- nasal::class_<sc::ElementPtr>::init("canvas.Element");
- nasal::class_<sc::GroupPtr>::init("canvas.Group")
- .bases<sc::ElementPtr>();
-
- nasal::class_<Base>::init("BaseClass")
- .member("int", &Base::getInt);
- nasal::class_<Test>::init("TestClass")
- .bases<Base>();
-}
+typedef nasal::Ghost<sc::CanvasPtr> NasalCanvas;
+typedef nasal::Ghost<sc::ElementPtr> NasalElement;
+typedef nasal::Ghost<sc::GroupPtr> NasalGroup;
#if 0
-/**
- * Class for exposing C++ objects to Nasal
- */
-template<class T, class Derived>
-class NasalObject
-{
- public:
- // TODO use variadic template when supporting C++11
- template<class A1>
- static naRef create( naContext c, const A1& a1 )
- {
- return makeGhost(c, new T(a1));
- }
-
- template<class A1, class A2>
- static naRef create( naContext c, const A1& a1,
- const A2& a2 )
- {
- return makeGhost(c, new T(a1, a2));
- }
-
- template<class A1, class A2, class A3>
- static naRef create( naContext c, const A1& a1,
- const A2& a2,
- const A3& a3 )
- {
- return makeGhost(c, new T(a1, a2, a3));
- }
-
- template<class A1, class A2, class A3, class A4>
- static naRef create( naContext c, const A1& a1,
- const A2& a2,
- const A3& a3,
- const A4& a4 )
- {
- return makeGhost(c, new T(a1, a2, a3, a4));
- }
-
- template<class A1, class A2, class A3, class A4, class A5>
- static naRef create( naContext c, const A1& a1,
- const A2& a2,
- const A3& a3,
- const A4& a4,
- const A5& a5 )
- {
- return makeGhost(c, new T(a1, a2, a3, a4, a5));
- }
-
- // TODO If you need more arguments just do some copy&paste :)
-
- static Derived& getInstance()
- {
- static Derived instance;
- return instance;
- }
-
- void setParent(const naRef& parent)
- {
- // TODO check if we need to take care of reference counting/gc
- _parents.resize(1);
- _parents[0] = parent;
- }
-
- protected:
-
- // TODO switch to boost::/std::function (with C++11 lambdas this can make
- // adding setters easier and shorter)
- typedef naRef (Derived::*getter_t)(naContext, const T&);
- typedef std::map<std::string, getter_t> GetterMap;
-
- const std::string _ghost_name;
- std::vector<naRef> _parents;
- GetterMap _getter;
-
- NasalObject(const std::string& ghost_name):
- _ghost_name( ghost_name )
- {
- _ghost_type.destroy = &destroyGhost;
- _ghost_type.name = _ghost_name.c_str();
- _ghost_type.get_member = &Derived::getMember;
- _ghost_type.set_member = 0;
-
- _getter["parents"] = &NasalObject::getParents;
- }
-
- naRef getParents(naContext c, const T&)
- {
- naRef parents = naNewVector(c);
- for(size_t i = 0; i < _parents.size(); ++i)
- naVec_append(parents, _parents[i]);
- return parents;
- }
-
- static naRef makeGhost(naContext c, void *ptr)
- {
- std::cout << "create " << ptr << std::endl;
- return naNewGhost2(c, &(getInstance()._ghost_type), ptr);
- }
-
- static void destroyGhost(void *ptr)
- {
- std::cout << "destroy " << ptr << std::endl;
- delete (T*)ptr;
- }
-
- static const char* getMember(naContext c, void* g, naRef field, naRef* out)
- {
- typename GetterMap::iterator getter =
- getInstance()._getter.find(naStr_data(field));
-
- if( getter == getInstance()._getter.end() )
- return 0;
-
- *out = (getInstance().*getter->second)(c, *static_cast<T*>(g));
- return "";
- }
-
- private:
-
- naGhostType _ghost_type;
-
-};
-
typedef osg::ref_ptr<osgGA::GUIEventAdapter> GUIEventPtr;
class NasalCanvasEvent:
{
public:
- NasalCanvasEvent():
- NasalObject("CanvasEvent")
- {
- _getter["type"] = &NasalCanvasEvent::getEventType;
- }
-
naRef getEventType(naContext c, const GUIEventPtr& event)
{
#define RET_EVENT_STR(type, str)\
}
};
#endif
-#if 0
-static const char* eventGhostGetMember(naContext c, void* g, naRef field, naRef* out)
+
+SGPropertyNode& requireArg(naContext c, int argc, naRef* args, int index = 0)
{
- const char* fieldName = naStr_data(field);
- osgGA::GUIEventAdapter* gea = (osgGA::GUIEventAdapter*) g;
+ if( argc <= index )
+ naRuntimeError(c, "missing argument #%d", index);
- if (!strcmp(fieldName, "windowX")) *out = naNum(gea->getWindowX());
- else if (!strcmp(fieldName, "windowY")) *out = naNum(gea->getWindowY());
- else if (!strcmp(fieldName, "time")) *out = naNum(gea->getTime());
- else if (!strcmp(fieldName, "button")) *out = naNum(gea->getButton());
- else {
- return 0;
- }
+ SGPropertyNode* props = ghostToPropNode(args[index]);
+ if( !props )
+ naRuntimeError(c, "arg #%d: not a SGPropertyNode ghost");
- return "";
+ return *props;
}
-static naRef f_element_addButtonCallback(naContext c, naRef me, int argc, naRef* args)
+CanvasMgr& requireCanvasMgr(naContext c)
{
- simgear::canvas::Element* e = elementGhost(me);
- if (!e) {
- naRuntimeError(c, "element.addButtonCallback called on non-canvas-element object");
- }
-
- return naNil();
-}
+ CanvasMgr* canvas_mgr =
+ static_cast<CanvasMgr*>(globals->get_subsystem("Canvas"));
+ if( !canvas_mgr )
+ naRuntimeError(c, "Failed to get Canvas subsystem");
-static naRef f_element_addDragCallback(naContext c, naRef me, int argc, naRef* args)
-{
- simgear::canvas::Element* e = elementGhost(me);
- if (!e) {
- naRuntimeError(c, "element.addDragCallback called on non-canvas-element object");
- }
-
- return naNil();
+ return *canvas_mgr;
}
-static naRef f_element_addMoveCallback(naContext c, naRef me, int argc, naRef* args)
+/**
+ * Create new Canvas and get ghost for it.
+ */
+static naRef f_createCanvas(naContext c, naRef me, int argc, naRef* args)
{
- simgear::canvas::Element* e = elementGhost(me);
- if (!e) {
- naRuntimeError(c, "element.addMoveCallback called on non-canvas-element object");
- }
-
- return naNil();
+ return NasalCanvas::create(c, requireCanvasMgr(c).createCanvas());
}
-static naRef f_element_addScrollCallback(naContext c, naRef me, int argc, naRef* args)
+/**
+ * Get ghost for existing Canvas.
+ */
+static naRef f_getCanvas(naContext c, naRef me, int argc, naRef* args)
{
- simgear::canvas::Element* e = elementGhost(me);
- if (!e) {
- naRuntimeError(c, "element.addScrollCallback called on non-canvas-element object");
+ SGPropertyNode& props = requireArg(c, argc, args);
+ CanvasMgr& canvas_mgr = requireCanvasMgr(c);
+
+ sc::CanvasPtr canvas;
+ if( canvas_mgr.getPropertyRoot() == props.getParent() )
+ {
+ // get a canvas specified by its root node
+ canvas = canvas_mgr.getCanvas( props.getIndex() );
+ if( !canvas || canvas->getProps() != &props )
+ return naNil();
}
-
- return naNil();
+ else
+ {
+ // get a canvas by name
+ if( props.hasValue("name") )
+ canvas = canvas_mgr.getCanvas( props.getStringValue("name") );
+ else if( props.hasValue("index") )
+ canvas = canvas_mgr.getCanvas( props.getIntValue("index") );
+ }
+
+ return NasalCanvas::create(c, canvas);
}
-#endif
-static naRef f_createCanvas(naContext c, naRef me, int argc, naRef* args)
+naRef f_canvasCreateGroup( sc::Canvas& canvas,
+ naContext c,
+ int argc,
+ naRef* args )
{
- std::cout << "f_createCanvas" << std::endl;
-
- CanvasMgr* canvas_mgr =
- static_cast<CanvasMgr*>(globals->get_subsystem("Canvas"));
- if( !canvas_mgr )
- return naNil();
+ std::string name;
+ if( argc > 0 )
+ name = nasal::from_nasal<std::string>(c, args[0]);
- return NasalCanvas::create(c, canvas_mgr->createCanvas());
+ return NasalGroup::create(c, canvas.createGroup(name));
}
naRef initNasalCanvas(naRef globals, naContext c, naRef gcSave)
{
- /*naNewHash(c);
- hashset(c, gcSave, "canvasProto", canvasPrototype);
-
- hashset(c, canvasPrototype, "getElement", naNewFunc(c, naNewCCode(c, f_canvas_getElement)));*/
- // set any event methods
-
-#if 0
- elementPrototype = naNewHash(c);
- hashset(c, gcSave, "elementProto", elementPrototype);
-
- hashset(c, elementPrototype, "addButtonCallback", naNewFunc(c, naNewCCode(c, f_element_addButtonCallback)));
- hashset(c, elementPrototype, "addDragCallback", naNewFunc(c, naNewCCode(c, f_element_addDragCallback)));
- hashset(c, elementPrototype, "addMoveCallback", naNewFunc(c, naNewCCode(c, f_element_addMoveCallback)));
- hashset(c, elementPrototype, "addScrollCallback", naNewFunc(c, naNewCCode(c, f_element_addScrollCallback)));
-#endif
+ NasalCanvas::init("Canvas")
+ .member("_node_ghost", &elementGetNode<sc::Canvas>)
+ .member("size_x", &sc::Canvas::getSizeX)
+ .member("size_y", &sc::Canvas::getSizeY)
+ .method_func<&f_canvasCreateGroup>("createGroup");
+ NasalElement::init("canvas.Element")
+ .member("_node_ghost", &elementGetNode<sc::Element>);
+ NasalGroup::init("canvas.Group")
+ .bases<NasalElement>();
+
nasal::Hash globals_module(globals, c),
canvas_module = globals_module.createHash("canvas");
- canvas_module.set("_new", f_createCanvas);
- canvas_module.set("testClass", nasal::class_<Test>::f_create);
-
- initCanvas();
+ canvas_module.set("_newCanvasGhost", f_createCanvas);
+ canvas_module.set("_getCanvasGhost", f_getCanvas);
return naNil();
}
projects / flightgear.git / blobdiff