wxpython_int.h

Wxpython Implemented on Windows CE, Source code

#define DECLARE_DEF_STRING(name)      static const wxString wxPy##name(wx##name)
#define DECLARE_DEF_STRING2(name,val) static const wxString wxPy##name(val)

//---------------------------------------------------------------------------

#ifndef wxPyUSE_EXPORTED_API

class wxPyCallback : public wxObject {
    DECLARE_ABSTRACT_CLASS(wxPyCallback)
public:
    wxPyCallback(PyObject* func);
    wxPyCallback(const wxPyCallback& other);
    ~wxPyCallback();

    void EventThunker(wxEvent& event);

    PyObject*   m_func;
};

#endif // wxPyUSE_EXPORTED_API
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
// These Event classes can be derived from in Python and passed through the
// event system without loosing anything.  They do this by keeping a reference
// to themselves and some special case handling in wxPyCallback::EventThunker.



class wxPyEvtSelfRef {
public:
    wxPyEvtSelfRef();
    ~wxPyEvtSelfRef();

    void SetSelf(PyObject* self, bool clone=false);
    PyObject* GetSelf() const;
    bool GetCloned() const { return m_cloned; }

protected:
    PyObject*   m_self;
    bool        m_cloned;
};


class wxPyEvent : public wxEvent, public wxPyEvtSelfRef {
    DECLARE_ABSTRACT_CLASS(wxPyEvent)
public:
    wxPyEvent(int winid=0, wxEventType commandType = wxEVT_NULL);
    wxPyEvent(const wxPyEvent& evt);
    ~wxPyEvent();

    virtual wxEvent* Clone() const { return new wxPyEvent(*this); }
};


class wxPyCommandEvent : public wxCommandEvent, public wxPyEvtSelfRef {
    DECLARE_ABSTRACT_CLASS(wxPyCommandEvent)
public:
    wxPyCommandEvent(wxEventType commandType = wxEVT_NULL, int id=0);
    wxPyCommandEvent(const wxPyCommandEvent& evt);
    ~wxPyCommandEvent();

    virtual wxEvent* Clone() const { return new wxPyCommandEvent(*this); }
};



//----------------------------------------------------------------------
// Forward decalre a few things used in the exported API
class wxPyClientData;
class wxPyUserData;
class wxPyOORClientData;
class wxPyCBInputStream;

void wxPyClientData_dtor(wxPyClientData* self);
void wxPyUserData_dtor(wxPyUserData* self);
void wxPyOORClientData_dtor(wxPyOORClientData* self);
wxPyCBInputStream* wxPyCBInputStream_create(PyObject *py, bool block);
wxPyCBInputStream* wxPyCBInputStream_copy(wxPyCBInputStream* other);

//---------------------------------------------------------------------------
// Export a C API in a struct.  Other modules will be able to load this from
// the wx.core module and will then have safe access to these functions, even if
// in another shared library.

class wxPyCallbackHelper;

struct wxPyCoreAPI {

    bool                (*p_wxPyCheckSwigType)(const wxChar* className);
    PyObject*           (*p_wxPyConstructObject)(void* ptr, const wxChar* className, int setThisOwn);
    bool                (*p_wxPyConvertSwigPtr)(PyObject* obj, void **ptr, const wxChar* className);
    PyObject*           (*p_wxPyMakeSwigPtr)(void* ptr, const wxChar* className);
        
    PyThreadState*      (*p_wxPyBeginAllowThreads)();
    void                (*p_wxPyEndAllowThreads)(PyThreadState* state);
    wxPyBlock_t         (*p_wxPyBeginBlockThreads)();
    void                (*p_wxPyEndBlockThreads)(wxPyBlock_t blocked);

    PyObject*           (*p_wxPy_ConvertList)(wxListBase* list);

    wxString*           (*p_wxString_in_helper)(PyObject* source);
    wxString            (*p_Py2wxString)(PyObject* source);
    PyObject*           (*p_wx2PyString)(const wxString& src);

    byte*               (*p_byte_LIST_helper)(PyObject* source);
    int*                (*p_int_LIST_helper)(PyObject* source);
    long*               (*p_long_LIST_helper)(PyObject* source);
    char**              (*p_string_LIST_helper)(PyObject* source);
    wxPoint*            (*p_wxPoint_LIST_helper)(PyObject* source, int* npoints);
    wxBitmap**          (*p_wxBitmap_LIST_helper)(PyObject* source);
    wxString*           (*p_wxString_LIST_helper)(PyObject* source);
    wxAcceleratorEntry* (*p_wxAcceleratorEntry_LIST_helper)(PyObject* source);

    bool                (*p_wxSize_helper)(PyObject* source, wxSize** obj);
    bool                (*p_wxPoint_helper)(PyObject* source, wxPoint** obj);
    bool                (*p_wxRealPoint_helper)(PyObject* source, wxRealPoint** obj);
    bool                (*p_wxRect_helper)(PyObject* source, wxRect** obj);
    bool                (*p_wxColour_helper)(PyObject* source, wxColour** obj);
    bool                (*p_wxPoint2D_helper)(PyObject* source, wxPoint2DDouble** obj);

    
    bool                (*p_wxPySimple_typecheck)(PyObject* source, const wxChar* classname, int seqLen);
    bool                (*p_wxColour_typecheck)(PyObject* source);

    void                (*p_wxPyCBH_setCallbackInfo)(wxPyCallbackHelper& cbh, PyObject* self, PyObject* klass, int incref);
    bool                (*p_wxPyCBH_findCallback)(const wxPyCallbackHelper& cbh, const char* name, bool setGuard);
    int                 (*p_wxPyCBH_callCallback)(const wxPyCallbackHelper& cbh, PyObject* argTuple);
    PyObject*           (*p_wxPyCBH_callCallbackObj)(const wxPyCallbackHelper& cbh, PyObject* argTuple);
    void                (*p_wxPyCBH_delete)(wxPyCallbackHelper* cbh);

    PyObject*           (*p_wxPyMake_wxObject)(wxObject* source, bool setThisOwn, bool checkEvtHandler);
    PyObject*           (*p_wxPyMake_wxSizer)(wxSizer* source, bool setThisOwn);
    void                (*p_wxPyPtrTypeMap_Add)(const char* commonName, const char* ptrName);
    bool                (*p_wxPy2int_seq_helper)(PyObject* source, int* i1, int* i2);
    bool                (*p_wxPy4int_seq_helper)(PyObject* source, int* i1, int* i2, int* i3, int* i4);
    PyObject*           (*p_wxArrayString2PyList_helper)(const wxArrayString& arr);
    PyObject*           (*p_wxArrayInt2PyList_helper)(const wxArrayInt& arr);

    void                (*p_wxPyClientData_dtor)(wxPyClientData*);
    void                (*p_wxPyUserData_dtor)(wxPyUserData*);
    void                (*p_wxPyOORClientData_dtor)(wxPyOORClientData*);

    wxPyCBInputStream*  (*p_wxPyCBInputStream_create)(PyObject *py, bool block);
    wxPyCBInputStream*  (*p_wxPyCBInputStream_copy)(wxPyCBInputStream* other);
    
    bool                (*p_wxPyInstance_Check)(PyObject* obj);
    bool                (*p_wxPySwigInstance_Check)(PyObject* obj);

    bool                (*p_wxPyCheckForApp)();

};

#ifdef wxPyUSE_EXPORTED_API
// Notice that this is static, not extern.  This is by design, each module
// needs one, but doesn't have to use it.
static wxPyCoreAPI* wxPyCoreAPIPtr = NULL;
inline wxPyCoreAPI* wxPyGetCoreAPIPtr();
#endif // wxPyUSE_EXPORTED_API

//---------------------------------------------------------------------------

// A wxObject that holds a reference to a Python object
class wxPyUserData : public wxObject {
public:
    wxPyUserData(PyObject* obj) {
        m_obj = obj;
        Py_INCREF(m_obj);
    }

    ~wxPyUserData() {
#ifdef wxPyUSE_EXPORTED_API
        wxPyGetCoreAPIPtr()->p_wxPyUserData_dtor(this);
#else
        wxPyUserData_dtor(this);
#endif
    }
    PyObject* m_obj;
};


// A wxClientData that holds a refernece to a Python object
class wxPyClientData : public wxClientData {
public:
    wxPyClientData(PyObject* obj, bool incref=true) {
        m_obj = obj;
        m_incRef = incref;
        if (incref)
            Py_INCREF(m_obj);
    }
    ~wxPyClientData() {

#ifdef wxPyUSE_EXPORTED_API
        wxPyGetCoreAPIPtr()->p_wxPyClientData_dtor(this);
#else
        wxPyClientData_dtor(this);
#endif
    }
    PyObject* m_obj;
    bool      m_incRef;
};


// Just like wxPyClientData, except when this object is destroyed it does some
// OOR magic on the Python Object.
class wxPyOORClientData : public wxPyClientData {
public:
    wxPyOORClientData(PyObject* obj, bool incref=true)
        : wxPyClientData(obj, incref) {}
    ~wxPyOORClientData() {

#ifdef wxPyUSE_EXPORTED_API
        wxPyGetCoreAPIPtr()->p_wxPyOORClientData_dtor(this);
#else
        wxPyOORClientData_dtor(this);
#endif
    }
};


//---------------------------------------------------------------------------
// A wxImageHandler that can be derived from in Python.
//

class wxPyImageHandler: public wxImageHandler {
protected:
    PyObject *m_self;

    // used for interning method names as PyStrings
    static PyObject* m_DoCanRead_Name;
    static PyObject* m_GetImageCount_Name;
    static PyObject* m_LoadFile_Name;
    static PyObject* m_SaveFile_Name;

    // converstion helpers
    PyObject* py_InputStream(wxInputStream* stream);
    PyObject* py_Image(wxImage* image);
    PyObject* py_OutputStream(wxOutputStream* stream);

public:
    wxPyImageHandler();
    ~wxPyImageHandler();
    void _SetSelf(PyObject *self);
    
    virtual bool LoadFile(wxImage* image, wxInputStream& stream,
                          bool verbose=true, int index=-1 );
    virtual bool SaveFile(wxImage* image, wxOutputStream& stream,
                          bool verbose=true );
    virtual int GetImageCount(wxInputStream& stream );
    virtual bool DoCanRead(wxInputStream &stream);
};


//---------------------------------------------------------------------------
// This class holds an instance of a Python Shadow Class object and assists
// with looking up and invoking Python callback methods from C++ virtual
// method redirections.  For all classes which have virtuals which should be
// overridable in wxPython, a new subclass is created that contains a
// wxPyCallbackHelper.
//

class wxPyCallbackHelper {
public:
    wxPyCallbackHelper(const wxPyCallbackHelper& other);

    wxPyCallbackHelper() {
        m_class = NULL;
        m_self = NULL;
        m_lastFound = NULL;
        m_incRef = false;
    }