kicad/common/swig/wx.i

/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2012 Miguel Angel Ajo <miguelangel@nbee.es>
 * Copyright (C) 1992-2012 KiCad Developers, see AUTHORS.txt for contributors.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, you may find one here:
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * or you may search the http://www.gnu.org website for the version 2 license,
 * or you may write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
 */

/**
 * @file wx.i
 * @brief wx wrappers for basic things, wxString, wxPoint, wxRect, etc..
 *        all the wx objects are very complex, and we don't want to pull
 *        and swig all depending objects, so we just define the methods
 *        we want to wrap.
 */

%{
#include <wx_python_helpers.h>
%}

// encoding setup, ascii by default ///////////////////////////////////////////

void wxSetDefaultPyEncoding(const char* encoding);
const char* wxGetDefaultPyEncoding();

// wxCoord /////////////////////////////////////////////////////////
// need to let swig know that wxCoord is an int. Ref: wx/defs.h
typedef int wxCoord;


// wxRect class wrapper ///////////////////////////////////////////////////////

class wxRect
{
public:
    wxRect() : x(0), y(0), width(0), height(0)  { }
    wxRect(int xx, int yy, int ww, int hh): x(xx), y(yy), width(ww), height(hh) { }
    wxRect(const wxPoint& topLeft, const wxPoint& bottomRight);
    wxRect(const wxPoint& pt, const wxSize& size)
        : x(pt.x), y(pt.y), width(size.x), height(size.y) { }
    wxRect(const wxSize& size): x(0), y(0), width(size.x), height(size.y) { }

    int GetX() const { return x; }
    void SetX(int xx) { x = xx; }

    int GetY() const { return y; }
    void SetY(int yy) { y = yy; }

    int GetWidth() const { return width; }
    void SetWidth(int w) { width = w; }

    int GetHeight() const { return height; }
    void SetHeight(int h) { height = h; }

    wxPoint GetPosition() const { return wxPoint(x, y); }
    void SetPosition( const wxPoint &p ) { x = p.x; y = p.y; }

    int x, y, width, height;

    %extend
    {
       /* extend the wxRect object so it can be converted into a tuple */
       PyObject* Get()
       {
            PyObject* res = PyTuple_New(4);
            PyTuple_SET_ITEM(res, 0, PyInt_FromLong(self->x));
            PyTuple_SET_ITEM(res, 1, PyInt_FromLong(self->y));
            PyTuple_SET_ITEM(res, 2, PyInt_FromLong(self->width));
            PyTuple_SET_ITEM(res, 3, PyInt_FromLong(self->height));
            return res;
        }
    }


    %pythoncode
    {

    def __eq__(self,other):
        return self.x==other.x and self.y==other.y and self.width==other.width and self.height==other.height
    def __str__(self):                   return str(self.Get())
    def __repr__(self):                  return 'wxRect'+str(self.Get())
    def __len__(self):                   return len(self.Get())
    def __getitem__(self, index):        return self.Get()[index]
    def __setitem__(self, index, val):
        if  index == 0:     self.SetX(val)
        elif    index == 1:     self.SetY(val)
        elif    index == 2:     self.SetWidth(val)
        elif    index == 3:     self.SetHeight(val)
        else:           raise IndexError
    def __nonzero__(self):               return self.Get() != (0,0,0,0)
    __safe_for_unpickling__ = True
   }

};

// wxSize class wrapper ///////////////////////////////////////////////////////

class wxSize
{
public:
    int x,y;
    wxSize(int xx, int yy) : x(xx), y(yy) { }
    wxSize(double xx, double yy) : x(xx), y(yy) {}
    %extend
    {
       PyObject* Get()
       {
            PyObject* res = PyTuple_New(2);
            PyTuple_SET_ITEM(res, 0, PyInt_FromLong(self->x));
            PyTuple_SET_ITEM(res, 1, PyInt_FromLong(self->y));
            return res;
        }
    }

    ~wxSize();

    void SetWidth(int w);
    void SetHeight(int h);
    int GetWidth() const;
    int GetHeight() const;


    %pythoncode
    {
        def Scale(self,xscale,yscale):
            return wxSize(self.x*xscale,self.y*yscale)
        def __eq__(self,other):
            return self.GetWidth()==other.GetWidth() and self.GetHeight()==other.GetHeight()
        def __str__(self):                   return str(self.Get())
        def __repr__(self):                  return 'wxSize'+str(self.Get())
        def __len__(self):                   return len(self.Get())
        def __getitem__(self, index):        return self.Get()[index]
        def __setitem__(self, index, val):
            if  index == 0:     self.SetWidth(val)
            elif    index == 1:     self.SetHeight(val)
            else:           raise IndexError
        def __nonzero__(self):               return self.Get() != (0,0)
        __safe_for_unpickling__ = True

    }
};

// wxPoint class wrapper to (xx,yy) tuple /////////////////////////////////////

class wxPoint
{
public:
    int x, y;
    wxPoint(int xx, int yy);
    wxPoint(double xx, double yy) : x(xx), y(yy) {}
    ~wxPoint();
    %extend {
        wxPoint __add__(const wxPoint& pt) {   return *self + pt;  }
        wxPoint __sub__(const wxPoint& pt) {   return *self - pt;  }

        void Set(long x, long y) {  self->x = x;     self->y = y;  }

        PyObject* Get()
        {
            PyObject* tup = PyTuple_New(2);
            PyTuple_SET_ITEM(tup, 0, PyInt_FromLong(self->x));
            PyTuple_SET_ITEM(tup, 1, PyInt_FromLong(self->y));
            return tup;
        }
    }

    %pythoncode {
    def __eq__(self,other):            return (self.x==other.x and self.y==other.y)
    def __ne__(self,other):            return not (self==other)
    def __str__(self):                 return str(self.Get())
    def __repr__(self):                return 'wxPoint'+str(self.Get())
    def __len__(self):                 return len(self.Get())
    def __getitem__(self, index):      return self.Get()[index]
    def __setitem__(self, index, val):
        if index == 0:
            self.x = val
        elif index == 1:
            self.y = val
        else:
            raise IndexError
    def __nonzero__(self):               return self.Get() != (0,0)

    }
};


// wxChar typemaps ///////////////////////////////////////////////////////////

/* they handle the conversion from/to strings */

%typemap(in)  wxChar {  wxString str = Py2wxString($input); $1 = str[0];   }
%typemap(out) wxChar {  wxString str($1);      $result = wx2PyString(str); }


// wxString /////////////////////////////////////////////////////////

/*
    The wxString typemaps below are sufficient to handle two cases but not
    a third.

    1) Arguments into wrapped C++ functions taking wxString as parameters can be
    passed as python strings, not wxString. In fact you cannot create a wxString
    from python, only in C++.

    2) Wrapped C++ functions returning wxString will have that wxString
    converted to a python unicode or string automatically.

    Both of these features are a result of the wxString typemaps below. Note
    that this philosophy is very agreeable, and is consistent with the
    philosophy adopted by wxPython. In fact one might wish that KiCad did not
    use wxString in any of its data structures, and merely used UTF8s, which
    will convert automatically to and from wxString when needed.

    There is another case that typemaps to not address, and no, this is not the
    construction of wxString from python, but rather the examination of wxString
    in situ, i.e. in a data structure within the BOARD. It does not match either
    case above. So the class wxString {} spec block below is in here to allow
    examination of a wxString's value when operating python interactively or
    when printing a value in situ that was not returned from a wrapped function.
    Remember wxString return values of functions are converted by the typemaps.

    No wxString constructor is given to SWIG, since wxString construction is
    always done in C++, but python needs to know that it can delete a wxString
    when necessary. And most importantly we need to see a string's contents so
    the __str__() function must show content.

*/

class wxString
{
public:
    // this is not C++ source, it is SWIG interface spec
    virtual ~wxString();

    %extend
    {
        PyObject* __str__()
        {
    %#if wxUSE_UNICODE
            return PyUnicode_FromWideChar( $self->c_str(), $self->Len() );
    %#else
            return PyString_FromStringAndSize( $self->c_str(), $self->Len() );
    %#endif
        }
    }

    %pythoncode
    {
        def __repr__(self):     return 'wxString(\'' + self.__str__() + '\')'
    }
};


// wxString typemaps

%typemap(in) wxString {
    $1 = Py2wxString($input);
}


%typemap(in) wxString& (bool temp=false)
{
    $1 = new wxString( Py2wxString( $input ) );
    if ($1 == NULL) SWIG_fail;
    temp = true;
}


%typemap(out) wxString
{
    $result = PyUnicode_FromString($1.utf8_str());
}


%typemap(varout) wxString
{
    $result = PyUnicode_FromString($1.utf8_str());
}


%typemap(out) wxString&
{
    $result = PyUnicode_FromString($1->utf8_str());
}


%typemap(typecheck, precedence=SWIG_TYPECHECK_POINTER) wxString& {
    $1 = PyString_Check($input) || PyUnicode_Check($input);
}

%apply wxString& { wxString* }


// wxArrayString //////////////////////////////////////////////////////
%typemap(in) wxArrayString& (bool temp=false) {
    if (!PySequence_Check($input))
    {
        PyErr_SetString(PyExc_TypeError, "Not a sequence of strings");
        SWIG_fail;
    }

    $1 = new wxArrayString;
    temp = true;
    int last=PySequence_Length($input);
    for (int i=0; i<last; i++)
    {
        PyObject* pyStr = PySequence_GetItem($input, i);
        wxString wxS = Py2wxString(pyStr);
        if (PyErr_Occurred())
            SWIG_fail;
        $1->Add(wxS);
        Py_DECREF(pyStr);
    }
}

%typemap(freearg) wxArrayString&
{
    if (temp$argnum)
        delete $1;
}

%typemap(out) wxArrayString&
{
    $result = wxArrayString2PyList(*$1);
}

%typemap(out) wxArrayString
{
    $result = wxArrayString2PyList($1);
}

%template(wxPoint_Vector) std::vector<wxPoint>;