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// SWIG interface for our widget
%module plotwidget
%{
#include "widget.h"
%}
// Type mapping for grabbing a Python object (needed later)
%typemap(python,in) PyObject *pyfunc {
if (!PyCallable_Check($source)) {
PyErr_SetString(PyExc_TypeError, "Need a callable object!");
return NULL;
}
$target = $source;
}
// Type mapping for grabbing a FILE * from Python
%typemap(python,in) FILE * {
if (!PyFile_Check($source)) {
PyErr_SetString(PyExc_TypeError, "Need a file!");
return NULL;
}
$target = PyFile_AsFile($source);
}
// Grab the class definition
%include widget.h
%{
/* This function matches the prototype of a normal C callback
function for our widget. However, the clientdata pointer
actually refers to a Python callable object. */
static double PythonCallBack(double a, void *clientdata)
{
PyObject *func, *arglist;
PyObject *result;
double dres = 0;
func = (PyObject *) clientdata;
arglist = Py_BuildValue("(d)",a);
result = PyEval_CallObject(func,arglist);
Py_DECREF(arglist);
if (result) {
dres = PyFloat_AsDouble(result);
}
Py_XDECREF(result);
return dres;
}
%}
// Attach a new method to our plot widget
%addmethods PlotWidget {
// Set a Python function object as a callback function
void set_pymethod(PyObject *pyfunc) {
self->set_method(PythonCallBack, (void *) pyfunc);
Py_INCREF(pyfunc);
}
}
#ifdef STATIC
%include embed.i
#endif
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