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%include <std_string.i>
%include <typemaps.i>
// macro to delegate the ownership of a class to C++
%define CHANGE_OWNERSHIP(name)
#include "CallbackStruct.h"
%pythonappend name##::##name %{
if len(args) == 5:
# retain reference to label
self.my_label = args[-1]
if self.parent() != None:
# delegate ownership to C++
self.this.disown()
self.init_type("name")
#print("Adding type: ", name)
%}
%extend name {
void init_type(char* name) {
CallbackStruct *cb = new CallbackStruct( 0, 0, 0, 0 );
memcpy(cb->type_name, name, strlen(name));
self->user_data(cb);
}
}
%enddef
// macro to revert the ownership
%define REVERT_OWNERSHIP(name)
%pythonappend name %{
#self = args[0]
if self.parent() != None:
#delegate ownership to C++
self.this.disown()
else:
#give ownership back to Python
self.this.own()
%}
%enddef
%define DEFINE_CALLBACK(name)
#include "CallbackStruct.h"
%{
#include "CallbackStruct.h"
#include <FL/Fl_Button.H>
//static PyObject *my_pycallback = NULL;
static void name ## _PythonCallBack(name *widget, void *clientdata)
{
PyObject *func, *arglist;
PyObject *result;
PyObject *obj = 0;
CallbackStruct* cb = (CallbackStruct*)clientdata;
// This is the function ....
func = cb->func;
if (cb->widget != 0) {
// the parent widget
obj = (PyObject *)( ((CallbackStruct *)clientdata)->widget);
}
else if (cb->type != 0) {
// this is the type of widget
swig_type_info *descr = (swig_type_info *)cb->type;
if (descr != 0) {
//printf("success\n");
obj = SWIG_NewPointerObj(widget, (swig_type_info *)descr, 0);
}
}
if (obj == 0) {
// generic fallback
obj = SWIG_NewPointerObj(widget, SWIGTYPE_p_ ## name, 0);
}
if (((CallbackStruct *)clientdata)->data)
{
arglist = Py_BuildValue("(OO)", obj, (PyObject *)(((CallbackStruct *)clientdata)->data) );
}
else
{
arglist = Py_BuildValue("(O)", obj );
}
result = PyObject_CallObject(func, arglist);
//Py_XDECREF(arglist); // Trash arglist
Py_XDECREF(result);
PyObject *error = PyErr_Occurred();
{
if (error != NULL) {
throw Swig::DirectorMethodException();
}
}
//if (PyErr_Occurred())
//{
// PyErr_Print();
//}
return /*void*/;
}
%}
%enddef
%define ADD_CALLBACK(name)
%extend name {
void
callback(PyObject *PyFunc, PyObject *PyWidget, PyObject *PyData = 0)
{
//CallbackStruct *cb = 0;
CallbackStruct *cb = (CallbackStruct*)self->user_data();
if (cb) {
cb->func = PyFunc;
cb->widget = PyWidget;
if (PyData) {
cb->data = PyData;
}
cb->widget = PyWidget;
}
else
cb = new CallbackStruct( PyFunc, PyData, PyWidget );
// Add a reference to new callback
Py_INCREF(PyFunc);
Py_XINCREF(PyData);
Py_XINCREF(PyWidget);
self->callback(name ## _PythonCallBack, (void *)cb);
}
}
%enddef
%define ADD_USERDATA(name)
#include "CallbackStruct.h"
%extend name {
void
user_data(PyObject *PyData)
{
// Add a reference to new callback
Py_XINCREF(PyData);
CallbackStruct *cb = (CallbackStruct*)self->user_data();
if (cb == NULL) {
cb = new CallbackStruct(0, PyData, (PyObject*)0);
self->user_data((void *)cb);
}
else {
if (cb->data != NULL)
Py_XDECREF(cb->data);
cb->data = PyData;
}
}
PyObject* user_data() {
PyObject *obj = 0;
CallbackStruct *cb = (CallbackStruct*)self->user_data();
if (cb) {
if (cb->data) {
obj = (PyObject*)cb->data;
Py_XINCREF(obj);
return obj;
}
}
// nothing found
Py_RETURN_NONE;
}
}
%enddef
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