mirror of
https://github.com/NGSolve/netgen.git
synced 2024-12-31 00:00:33 +05:00
82 lines
2.3 KiB
C++
82 lines
2.3 KiB
C++
/*
|
|
* getToglFromWidget:
|
|
*
|
|
* Given a Python widget, get the corresponding Togl pointer. <Python.h>
|
|
* and <togl.h> should be included before this. If included into a C file,
|
|
* there should be a static keyword just before the include.
|
|
*
|
|
* There should be one copy of getToglFromWidget per-shared library so that
|
|
* the library's Tcl/Tk/Togl stub pointers are properly initialized.
|
|
*
|
|
* Copyright (C) 2006 Greg Couch
|
|
* See the LICENSE file for copyright details.
|
|
*/
|
|
|
|
Togl *
|
|
getToglFromWidget(PyObject *widget)
|
|
{
|
|
PyObject *cmdNameObj, *tk, *interpAddr;
|
|
const char *cmdName;
|
|
Tcl_Interp *interp;
|
|
Togl *curTogl;
|
|
|
|
#ifdef USE_TOGL_STUBS
|
|
static int didOnce = 0;
|
|
#endif
|
|
|
|
/* Python: cmdName = widget._w */
|
|
/* Python: interpAddr = widget.tk.interpaddr() */
|
|
cmdNameObj = PyObject_GetAttrString(widget, "_w");
|
|
tk = PyObject_GetAttrString(widget, "tk");
|
|
if (cmdNameObj == NULL || !PyString_Check(cmdNameObj) || tk == NULL) {
|
|
Py_XDECREF(cmdNameObj);
|
|
Py_XDECREF(tk);
|
|
#ifdef __cplusplus
|
|
throw std::invalid_argument("not a Tk widget");
|
|
#else
|
|
return NULL;
|
|
#endif
|
|
}
|
|
|
|
interpAddr = PyEval_CallMethod(tk, "interpaddr", "()");
|
|
if (interpAddr == NULL || !PyInt_Check(interpAddr)) {
|
|
Py_DECREF(cmdNameObj);
|
|
Py_DECREF(tk);
|
|
Py_XDECREF(interpAddr);
|
|
#ifdef __cplusplus
|
|
throw std::invalid_argument("not a Tk widget");
|
|
#else
|
|
return NULL;
|
|
#endif
|
|
}
|
|
|
|
cmdName = PyString_AsString(cmdNameObj);
|
|
interp = (Tcl_Interp *) PyInt_AsLong(interpAddr);
|
|
|
|
#ifdef USE_TOGL_STUBS
|
|
if (!didOnce) {
|
|
/* make sure stubs are initialized before calling a Togl function. */
|
|
if (Tcl_InitStubs(interp, TCL_VERSION, 0) == NULL
|
|
|| Tk_InitStubs(interp, TK_VERSION, 0) == NULL
|
|
|| Togl_InitStubs(interp, TOGL_VERSION, 0) == NULL)
|
|
# ifdef __cplusplus
|
|
throw std::runtime_error("unable to initialize Togl");
|
|
# else
|
|
return NULL;
|
|
# endif
|
|
didOnce = 1;
|
|
}
|
|
#endif
|
|
|
|
if (Togl_GetToglFromName(interp, cmdName, &curTogl) != TCL_OK)
|
|
curTogl = NULL;
|
|
Py_DECREF(cmdNameObj);
|
|
Py_DECREF(tk);
|
|
Py_DECREF(interpAddr);
|
|
#ifdef __cplusplus
|
|
if (curTogl == NULL)
|
|
throw std::invalid_argument("not a Togl widget");
|
|
#endif
|
|
return curTogl;
|
|
}
|