/*********************************************************** Copyright (C) 1994 Steen Lumholt. All Rights Reserved ******************************************************************/ /* _tkinter.c -- Interface to libtk.a and libtcl.a. */ /* TCL/TK VERSION INFO: Only Tcl/Tk 8.2 and later are supported. Older versions are not supported. (Use Python 2.2 if you cannot upgrade your Tcl/Tk libraries.) */ /* XXX Further speed-up ideas, involving Tcl 8.0 features: - Register a new Tcl type, "Python callable", which can be called more efficiently and passed to Tcl_EvalObj() directly (if this is possible). */ #include "Python.h" #include #ifdef WITH_THREAD #include "pythread.h" #endif #ifdef MS_WINDOWS #include #endif #ifdef macintosh #define MAC_TCL #endif /* Starting with Tcl 8.4, many APIs offer const-correctness. Unfortunately, making _tkinter correct for this API means to break earlier versions. USE_COMPAT_CONST allows to make _tkinter work with both 8.4 and earlier versions. Once Tcl releases before 8.4 don't need to be supported anymore, this should go. */ #define USE_COMPAT_CONST /* If Tcl is compiled for threads, we must also define TCL_THREAD. We define it always; if Tcl is not threaded, the thread functions in Tcl are empty. */ #define TCL_THREADS #ifdef TK_FRAMEWORK #include #include #else #include #include #endif #define TKMAJORMINOR (TK_MAJOR_VERSION*1000 + TK_MINOR_VERSION) #if TKMAJORMINOR < 8002 #error "Tk older than 8.2 not supported" #endif /* Unicode conversion assumes that Tcl_UniChar is two bytes. We cannot test this directly, so we test UTF-8 size instead, expecting that TCL_UTF_MAX is changed if Tcl ever supports either UTF-16 or UCS-4. */ #if TCL_UTF_MAX != 3 #error "unsupported Tcl configuration" #endif #if defined(macintosh) /* Sigh, we have to include this to get at the tcl qd pointer */ #include /* And this one we need to clear the menu bar */ #include #endif #if !(defined(MS_WINDOWS) || defined(__CYGWIN__) || defined(macintosh)) /* Mac has it, but it doesn't really work:-( */ #define HAVE_CREATEFILEHANDLER #endif #ifdef HAVE_CREATEFILEHANDLER /* Tcl_CreateFileHandler() changed several times; these macros deal with the messiness. In Tcl 8.0 and later, it is not available on Windows (and on Unix, only because Jack added it back); when available on Windows, it only applies to sockets. */ #ifdef MS_WINDOWS #define FHANDLETYPE TCL_WIN_SOCKET #else #define FHANDLETYPE TCL_UNIX_FD #endif /* If Tcl can wait for a Unix file descriptor, define the EventHook() routine which uses this to handle Tcl events while the user is typing commands. */ #if FHANDLETYPE == TCL_UNIX_FD #define WAIT_FOR_STDIN #endif #endif /* HAVE_CREATEFILEHANDLER */ #ifdef MS_WINDOWS #include #define WAIT_FOR_STDIN #endif #ifdef WITH_THREAD /* The threading situation is complicated. Tcl is not thread-safe, except when configured with --enable-threads. So we need to use a lock around all uses of Tcl. Previously, the Python interpreter lock was used for this. However, this causes problems when other Python threads need to run while Tcl is blocked waiting for events. To solve this problem, a separate lock for Tcl is introduced. Holding it is incompatible with holding Python's interpreter lock. The following four macros manipulate both locks together. ENTER_TCL and LEAVE_TCL are brackets, just like Py_BEGIN_ALLOW_THREADS and Py_END_ALLOW_THREADS. They should be used whenever a call into Tcl is made that could call an event handler, or otherwise affect the state of a Tcl interpreter. These assume that the surrounding code has the Python interpreter lock; inside the brackets, the Python interpreter lock has been released and the lock for Tcl has been acquired. Sometimes, it is necessary to have both the Python lock and the Tcl lock. (For example, when transferring data from the Tcl interpreter result to a Python string object.) This can be done by using different macros to close the ENTER_TCL block: ENTER_OVERLAP reacquires the Python lock (and restores the thread state) but doesn't release the Tcl lock; LEAVE_OVERLAP_TCL releases the Tcl lock. By contrast, ENTER_PYTHON and LEAVE_PYTHON are used in Tcl event handlers when the handler needs to use Python. Such event handlers are entered while the lock for Tcl is held; the event handler presumably needs to use Python. ENTER_PYTHON releases the lock for Tcl and acquires the Python interpreter lock, restoring the appropriate thread state, and LEAVE_PYTHON releases the Python interpreter lock and re-acquires the lock for Tcl. It is okay for ENTER_TCL/LEAVE_TCL pairs to be contained inside the code between ENTER_PYTHON and LEAVE_PYTHON. These locks expand to several statements and brackets; they should not be used in branches of if statements and the like. If Tcl is threaded, this approach won't work anymore. The Tcl interpreter is only valid in the thread that created it, and all Tk activity must happen in this thread, also. That means that the mainloop must be invoked in the thread that created the interpreter. Invoking commands from other threads is possible; _tkinter will queue an event for the interpreter thread, which will then execute the command and pass back the result. If the main thread is not in the mainloop, and invoking commands causes an exception; if the main loop is running but not processing events, the command invocation will block. In addition, for a threaded Tcl, a single global tcl_tstate won't be sufficient anymore, since multiple Tcl interpreters may simultaneously dispatch in different threads. So we use the Tcl TLS API. */ static PyThread_type_lock tcl_lock = 0; #ifdef TCL_THREADS static Tcl_ThreadDataKey state_key; typedef PyThreadState *ThreadSpecificData; #define tcl_tstate (*(PyThreadState**)Tcl_GetThreadData(&state_key, sizeof(PyThreadState*))) #else static PyThreadState *tcl_tstate = NULL; #endif #define ENTER_TCL \ { PyThreadState *tstate = PyThreadState_Get(); Py_BEGIN_ALLOW_THREADS \ if(tcl_lock)PyThread_acquire_lock(tcl_lock, 1); tcl_tstate = tstate; #define LEAVE_TCL \ tcl_tstate = NULL; if(tcl_lock)PyThread_release_lock(tcl_lock); Py_END_ALLOW_THREADS} #define ENTER_OVERLAP \ Py_END_ALLOW_THREADS #define LEAVE_OVERLAP_TCL \ tcl_tstate = NULL; if(tcl_lock)PyThread_release_lock(tcl_lock); } #define ENTER_PYTHON \ { PyThreadState *tstate = tcl_tstate; tcl_tstate = NULL; \ if(tcl_lock)PyThread_release_lock(tcl_lock); PyEval_RestoreThread((tstate)); } #define LEAVE_PYTHON \ { PyThreadState *tstate = PyEval_SaveThread(); \ if(tcl_lock)PyThread_acquire_lock(tcl_lock, 1); tcl_tstate = tstate; } #define CHECK_TCL_APPARTMENT \ if (((TkappObject *)self)->threaded && \ ((TkappObject *)self)->thread_id != Tcl_GetCurrentThread()) { \ PyErr_SetString(PyExc_RuntimeError, "Calling Tcl from different appartment"); \ return 0; \ } #else #define ENTER_TCL #define LEAVE_TCL #define ENTER_OVERLAP #define LEAVE_OVERLAP_TCL #define ENTER_PYTHON #define LEAVE_PYTHON #define CHECK_TCL_APPARTMENT #endif #ifdef macintosh /* ** Additional cruft needed by Tcl/Tk on the Mac. ** This is for Tcl 7.5 and Tk 4.1 (patch release 1). */ /* ckfree() expects a char* */ #define FREECAST (char *) #include /* For EventRecord */ typedef int (*TclMacConvertEventPtr) (EventRecord *eventPtr); void Tcl_MacSetEventProc(TclMacConvertEventPtr procPtr); int TkMacConvertEvent(EventRecord *eventPtr); static int PyMacConvertEvent(EventRecord *eventPtr); #include extern int SIOUXIsAppWindow(WindowPtr); #endif /* macintosh */ #ifndef FREECAST #define FREECAST (char *) #endif /**** Tkapp Object Declaration ****/ static PyTypeObject Tkapp_Type; typedef struct { PyObject_HEAD Tcl_Interp *interp; int wantobjects; int threaded; /* True if tcl_platform[threaded] */ Tcl_ThreadId thread_id; int dispatching; /* We cannot include tclInt.h, as this is internal. So we cache interesting types here. */ Tcl_ObjType *BooleanType; Tcl_ObjType *ByteArrayType; Tcl_ObjType *DoubleType; Tcl_ObjType *IntType; Tcl_ObjType *ListType; Tcl_ObjType *ProcBodyType; Tcl_ObjType *StringType; } TkappObject; #define Tkapp_Check(v) ((v)->ob_type == &Tkapp_Type) #define Tkapp_Interp(v) (((TkappObject *) (v))->interp) #define Tkapp_Result(v) Tcl_GetStringResult(Tkapp_Interp(v)) #define DEBUG_REFCNT(v) (printf("DEBUG: id=%p, refcnt=%i\n", \ (void *) v, ((PyObject *) v)->ob_refcnt)) /**** Error Handling ****/ static PyObject *Tkinter_TclError; static int quitMainLoop = 0; static int errorInCmd = 0; static PyObject *excInCmd; static PyObject *valInCmd; static PyObject *trbInCmd; static PyObject * Tkinter_Error(PyObject *v) { PyErr_SetString(Tkinter_TclError, Tkapp_Result(v)); return NULL; } /**** Utils ****/ #ifdef WITH_THREAD #ifndef MS_WINDOWS /* Millisecond sleep() for Unix platforms. */ static void Sleep(int milli) { /* XXX Too bad if you don't have select(). */ struct timeval t; t.tv_sec = milli/1000; t.tv_usec = (milli%1000) * 1000; select(0, (fd_set *)0, (fd_set *)0, (fd_set *)0, &t); } #endif /* MS_WINDOWS */ #endif /* WITH_THREAD */ /* Wait up to 1s for the mainloop to come up. */ static int WaitForMainloop(TkappObject* self) { int i; for (i = 0; i < 10; i++) { if (self->dispatching) return 1; Py_BEGIN_ALLOW_THREADS Sleep(100); Py_END_ALLOW_THREADS } if (self->dispatching) return 1; PyErr_SetString(PyExc_RuntimeError, "main thread is not in main loop"); return 0; } static char * AsString(PyObject *value, PyObject *tmp) { if (PyString_Check(value)) return PyString_AsString(value); #ifdef Py_USING_UNICODE else if (PyUnicode_Check(value)) { PyObject *v = PyUnicode_AsUTF8String(value); if (v == NULL) return NULL; if (PyList_Append(tmp, v) != 0) { Py_DECREF(v); return NULL; } Py_DECREF(v); return PyString_AsString(v); } #endif else { PyObject *v = PyObject_Str(value); if (v == NULL) return NULL; if (PyList_Append(tmp, v) != 0) { Py_DECREF(v); return NULL; } Py_DECREF(v); return PyString_AsString(v); } } #define ARGSZ 64 static char * Merge(PyObject *args) { PyObject *tmp = NULL; char *argvStore[ARGSZ]; char **argv = NULL; int fvStore[ARGSZ]; int *fv = NULL; int argc = 0, fvc = 0, i; char *res = NULL; if (!(tmp = PyList_New(0))) return NULL; argv = argvStore; fv = fvStore; if (args == NULL) argc = 0; else if (!PyTuple_Check(args)) { argc = 1; fv[0] = 0; if (!(argv[0] = AsString(args, tmp))) goto finally; } else { argc = PyTuple_Size(args); if (argc > ARGSZ) { argv = (char **)ckalloc(argc * sizeof(char *)); fv = (int *)ckalloc(argc * sizeof(int)); if (argv == NULL || fv == NULL) { PyErr_NoMemory(); goto finally; } } for (i = 0; i < argc; i++) { PyObject *v = PyTuple_GetItem(args, i); if (PyTuple_Check(v)) { fv[i] = 1; if (!(argv[i] = Merge(v))) goto finally; fvc++; } else if (v == Py_None) { argc = i; break; } else { fv[i] = 0; if (!(argv[i] = AsString(v, tmp))) goto finally; fvc++; } } } res = Tcl_Merge(argc, argv); if (res == NULL) PyErr_SetString(Tkinter_TclError, "merge failed"); finally: for (i = 0; i < fvc; i++) if (fv[i]) { ckfree(argv[i]); } if (argv != argvStore) ckfree(FREECAST argv); if (fv != fvStore) ckfree(FREECAST fv); Py_DECREF(tmp); return res; } static PyObject * Split(char *list) { int argc; char **argv; PyObject *v; if (list == NULL) { Py_INCREF(Py_None); return Py_None; } if (Tcl_SplitList((Tcl_Interp *)NULL, list, &argc, &argv) != TCL_OK) { /* Not a list. * Could be a quoted string containing funnies, e.g. {"}. * Return the string itself. */ return PyString_FromString(list); } if (argc == 0) v = PyString_FromString(""); else if (argc == 1) v = PyString_FromString(argv[0]); else if ((v = PyTuple_New(argc)) != NULL) { int i; PyObject *w; for (i = 0; i < argc; i++) { if ((w = Split(argv[i])) == NULL) { Py_DECREF(v); v = NULL; break; } PyTuple_SetItem(v, i, w); } } Tcl_Free(FREECAST argv); return v; } /* In some cases, Tcl will still return strings that are supposed to be lists. SplitObj walks through a nested tuple, finding string objects that need to be split. */ PyObject * SplitObj(PyObject *arg) { if (PyTuple_Check(arg)) { int i, size; PyObject *elem, *newelem, *result; size = PyTuple_Size(arg); result = NULL; /* Recursively invoke SplitObj for all tuple items. If this does not return a new object, no action is needed. */ for(i = 0; i < size; i++) { elem = PyTuple_GetItem(arg, i); newelem = SplitObj(elem); if (!newelem) { Py_XDECREF(result); return NULL; } if (!result) { int k; if (newelem == elem) { Py_DECREF(newelem); continue; } result = PyTuple_New(size); if (!result) return NULL; for(k = 0; k < i; k++) { elem = PyTuple_GetItem(arg, k); Py_INCREF(elem); PyTuple_SetItem(result, k, elem); } } PyTuple_SetItem(result, i, newelem); } if (result) return result; /* Fall through, returning arg. */ } else if (PyString_Check(arg)) { int argc; char **argv; char *list = PyString_AsString(arg); if (Tcl_SplitList((Tcl_Interp *)NULL, list, &argc, &argv) != TCL_OK) { Py_INCREF(arg); return arg; } Tcl_Free(FREECAST argv); if (argc > 1) return Split(PyString_AsString(arg)); /* Fall through, returning arg. */ } Py_INCREF(arg); return arg; } /**** Tkapp Object ****/ #ifndef WITH_APPINIT int Tcl_AppInit(Tcl_Interp *interp) { Tk_Window main; main = Tk_MainWindow(interp); if (Tcl_Init(interp) == TCL_ERROR) { PySys_WriteStderr("Tcl_Init error: %s\n", Tcl_GetStringResult(interp)); return TCL_ERROR; } if (Tk_Init(interp) == TCL_ERROR) { PySys_WriteStderr("Tk_Init error: %s\n", Tcl_GetStringResult(interp)); return TCL_ERROR; } return TCL_OK; } #endif /* !WITH_APPINIT */ /* Initialize the Tk application; see the `main' function in * `tkMain.c'. */ static void EnableEventHook(void); /* Forward */ static void DisableEventHook(void); /* Forward */ static TkappObject * Tkapp_New(char *screenName, char *baseName, char *className, int interactive, int wantobjects) { TkappObject *v; char *argv0; v = PyObject_New(TkappObject, &Tkapp_Type); if (v == NULL) return NULL; v->interp = Tcl_CreateInterp(); v->wantobjects = wantobjects; v->threaded = Tcl_GetVar2Ex(v->interp, "tcl_platform", "threaded", TCL_GLOBAL_ONLY) != NULL; v->thread_id = Tcl_GetCurrentThread(); v->dispatching = 0; #ifndef TCL_THREADS if (v->threaded) { PyErr_SetString(PyExc_RuntimeError, "Tcl is threaded but _tkinter is not"); Py_DECREF(v); return 0; } #endif if (v->threaded && tcl_lock) { /* If Tcl is threaded, we don't need the lock. */ PyThread_free_lock(tcl_lock); tcl_lock = NULL; } v->BooleanType = Tcl_GetObjType("boolean"); v->ByteArrayType = Tcl_GetObjType("bytearray"); v->DoubleType = Tcl_GetObjType("double"); v->IntType = Tcl_GetObjType("int"); v->ListType = Tcl_GetObjType("list"); v->ProcBodyType = Tcl_GetObjType("procbody"); v->StringType = Tcl_GetObjType("string"); #if defined(macintosh) /* This seems to be needed */ ClearMenuBar(); TkMacInitMenus(v->interp); #endif /* Delete the 'exit' command, which can screw things up */ Tcl_DeleteCommand(v->interp, "exit"); if (screenName != NULL) Tcl_SetVar2(v->interp, "env", "DISPLAY", screenName, TCL_GLOBAL_ONLY); if (interactive) Tcl_SetVar(v->interp, "tcl_interactive", "1", TCL_GLOBAL_ONLY); else Tcl_SetVar(v->interp, "tcl_interactive", "0", TCL_GLOBAL_ONLY); /* This is used to get the application class for Tk 4.1 and up */ argv0 = (char*)ckalloc(strlen(className) + 1); if (!argv0) { PyErr_NoMemory(); Py_DECREF(v); return NULL; } strcpy(argv0, className); if (isupper((int)(argv0[0]))) argv0[0] = tolower(argv0[0]); Tcl_SetVar(v->interp, "argv0", argv0, TCL_GLOBAL_ONLY); ckfree(argv0); if (Tcl_AppInit(v->interp) != TCL_OK) return (TkappObject *)Tkinter_Error((PyObject *)v); EnableEventHook(); return v; } static void Tkapp_ThreadSend(TkappObject *self, Tcl_Event *ev, Tcl_Condition *cond, Tcl_Mutex *mutex) { Py_BEGIN_ALLOW_THREADS; Tcl_MutexLock(mutex); Tcl_ThreadQueueEvent(self->thread_id, ev, TCL_QUEUE_TAIL); Tcl_ThreadAlert(self->thread_id); Tcl_ConditionWait(cond, mutex, NULL); Tcl_MutexUnlock(mutex); Py_END_ALLOW_THREADS } /** Tcl Eval **/ typedef struct { PyObject_HEAD Tcl_Obj *value; } PyTclObject; staticforward PyTypeObject PyTclObject_Type; #define PyTclObject_Check(v) ((v)->ob_type == &PyTclObject_Type) static PyObject * newPyTclObject(Tcl_Obj *arg) { PyTclObject *self; self = PyObject_New(PyTclObject, &PyTclObject_Type); if (self == NULL) return NULL; Tcl_IncrRefCount(arg); self->value = arg; return (PyObject*)self; } static void PyTclObject_dealloc(PyTclObject *self) { Tcl_DecrRefCount(self->value); PyObject_Del(self); } static PyObject * PyTclObject_str(PyTclObject *self) { return PyString_FromString(Tcl_GetString(self->value)); } static PyObject * PyTclObject_repr(PyTclObject *self) { char buf[50]; PyOS_snprintf(buf, 50, "<%s object at 0x%.8x>", self->value->typePtr->name, (int)self->value); return PyString_FromString(buf); } static PyObject* get_typename(PyTclObject* obj, void* ignored) { return PyString_FromString(obj->value->typePtr->name); } static PyGetSetDef PyTclObject_getsetlist[] = { {"typename", (getter)get_typename, NULL, "name of the Tcl type"}, {0}, }; statichere PyTypeObject PyTclObject_Type = { PyObject_HEAD_INIT(NULL) 0, /*ob_size*/ "_tkinter.Tcl_Obj", /*tp_name*/ sizeof(PyTclObject), /*tp_basicsize*/ 0, /*tp_itemsize*/ /* methods */ (destructor)PyTclObject_dealloc, /*tp_dealloc*/ 0, /*tp_print*/ 0, /*tp_getattr*/ 0, /*tp_setattr*/ 0, /*tp_compare*/ (reprfunc)PyTclObject_repr, /*tp_repr*/ 0, /*tp_as_number*/ 0, /*tp_as_sequence*/ 0, /*tp_as_mapping*/ 0, /*tp_hash*/ 0, /*tp_call*/ (reprfunc)PyTclObject_str, /*tp_str*/ PyObject_GenericGetAttr,/*tp_getattro*/ 0, /*tp_setattro*/ 0, /*tp_as_buffer*/ Py_TPFLAGS_DEFAULT, /*tp_flags*/ 0, /*tp_doc*/ 0, /*tp_traverse*/ 0, /*tp_clear*/ 0, /*tp_richcompare*/ 0, /*tp_weaklistoffset*/ 0, /*tp_iter*/ 0, /*tp_iternext*/ 0, /*tp_methods*/ 0, /*tp_members*/ PyTclObject_getsetlist, /*tp_getset*/ 0, /*tp_base*/ 0, /*tp_dict*/ 0, /*tp_descr_get*/ 0, /*tp_descr_set*/ 0, /*tp_dictoffset*/ 0, /*tp_init*/ 0, /*tp_alloc*/ 0, /*tp_new*/ 0, /*tp_free*/ 0, /*tp_is_gc*/ }; static Tcl_Obj* AsObj(PyObject *value) { Tcl_Obj *result; if (PyString_Check(value)) return Tcl_NewStringObj(PyString_AS_STRING(value), PyString_GET_SIZE(value)); else if (PyInt_Check(value)) return Tcl_NewLongObj(PyInt_AS_LONG(value)); else if (PyFloat_Check(value)) return Tcl_NewDoubleObj(PyFloat_AS_DOUBLE(value)); else if (PyTuple_Check(value)) { Tcl_Obj **argv = (Tcl_Obj**) ckalloc(PyTuple_Size(value)*sizeof(Tcl_Obj*)); int i; if(!argv) return 0; for(i=0;i= 0x10000) { /* Tcl doesn't do UTF-16, yet. */ PyErr_SetString(PyExc_ValueError, "unsupported character"); ckfree(FREECAST outbuf); return NULL; } outbuf[i] = inbuf[i]; } result = Tcl_NewUnicodeObj(outbuf, size); ckfree(FREECAST outbuf); return result; #else return Tcl_NewUnicodeObj(inbuf, size); #endif } #endif else if(PyTclObject_Check(value)) { Tcl_Obj *v = ((PyTclObject*)value)->value; Tcl_IncrRefCount(v); return v; } else { PyObject *v = PyObject_Str(value); if (!v) return 0; result = AsObj(v); Py_DECREF(v); return result; } } static PyObject* FromObj(PyObject* tkapp, Tcl_Obj *value) { PyObject *result = NULL; TkappObject *app = (TkappObject*)tkapp; if (value->typePtr == NULL) { /* If the result contains any bytes with the top bit set, it's UTF-8 and we should decode it to Unicode */ #ifdef Py_USING_UNICODE int i; char *s = value->bytes; int len = value->length; for (i = 0; i < len; i++) { if (value->bytes[i] & 0x80) break; } if (i == value->length) result = PyString_FromStringAndSize(s, len); else { /* Convert UTF-8 to Unicode string */ result = PyUnicode_DecodeUTF8(s, len, "strict"); if (result == NULL) { PyErr_Clear(); result = PyString_FromStringAndSize(s, len); } } #else res = PyString_FromStringAndSize(value->bytes, value->length); #endif return result; } if (value->typePtr == app->BooleanType) { result = value->internalRep.longValue ? Py_True : Py_False; Py_INCREF(result); return result; } if (value->typePtr == app->ByteArrayType) { int size; char *data = (char*)Tcl_GetByteArrayFromObj(value, &size); return PyString_FromStringAndSize(data, size); } if (value->typePtr == app->DoubleType) { return PyFloat_FromDouble(value->internalRep.doubleValue); } if (value->typePtr == app->IntType) { return PyInt_FromLong(value->internalRep.longValue); } if (value->typePtr == app->ListType) { int size; int i, status; PyObject *elem; Tcl_Obj *tcl_elem; status = Tcl_ListObjLength(Tkapp_Interp(tkapp), value, &size); if (status == TCL_ERROR) return Tkinter_Error(tkapp); result = PyTuple_New(size); if (!result) return NULL; for (i = 0; i < size; i++) { status = Tcl_ListObjIndex(Tkapp_Interp(tkapp), value, i, &tcl_elem); if (status == TCL_ERROR) { Py_DECREF(result); return Tkinter_Error(tkapp); } elem = FromObj(tkapp, tcl_elem); if (!elem) { Py_DECREF(result); return NULL; } PyTuple_SetItem(result, i, elem); } return result; } if (value->typePtr == app->ProcBodyType) { /* fall through: return tcl object. */ } if (value->typePtr == app->StringType) { #ifdef Py_USING_UNICODE #ifdef Py_UNICODE_WIDE PyObject *result; int size; Tcl_UniChar *input; Py_UNICODE *output; size = Tcl_GetCharLength(value); result = PyUnicode_FromUnicode(NULL, size); if (!result) return NULL; input = Tcl_GetUnicode(value); output = PyUnicode_AS_UNICODE(result); while (size--) *output++ = *input++; return result; #else return PyUnicode_FromUnicode(Tcl_GetUnicode(value), Tcl_GetCharLength(value)); #endif #else int size; char *c; c = Tcl_GetStringFromObj(value, &size); return PyString_FromStringAndSize(c, size); #endif } return newPyTclObject(value); } /* This mutex synchronizes inter-thread command calls. */ TCL_DECLARE_MUTEX(call_mutex) typedef struct Tkapp_CallEvent { Tcl_Event ev; /* Must be first */ TkappObject *self; PyObject *args; int flags; PyObject **res; PyObject **exc_type, **exc_value, **exc_tb; Tcl_Condition done; } Tkapp_CallEvent; void Tkapp_CallDeallocArgs(Tcl_Obj** objv, Tcl_Obj** objStore, int objc) { int i; for (i = 0; i < objc; i++) Tcl_DecrRefCount(objv[i]); if (objv != objStore) ckfree(FREECAST objv); } /* Convert Python objects to Tcl objects. This must happen in the interpreter thread, which may or may not be the calling thread. */ static Tcl_Obj** Tkapp_CallArgs(PyObject *args, Tcl_Obj** objStore, int *pobjc) { Tcl_Obj **objv = objStore; int objc = 0, i; if (args == NULL) /* do nothing */; else if (!PyTuple_Check(args)) { objv[0] = AsObj(args); if (objv[0] == 0) goto finally; objc = 1; Tcl_IncrRefCount(objv[0]); } else { objc = PyTuple_Size(args); if (objc > ARGSZ) { objv = (Tcl_Obj **)ckalloc(objc * sizeof(char *)); if (objv == NULL) { PyErr_NoMemory(); objc = 0; goto finally; } } for (i = 0; i < objc; i++) { PyObject *v = PyTuple_GetItem(args, i); if (v == Py_None) { objc = i; break; } objv[i] = AsObj(v); if (!objv[i]) { /* Reset objc, so it attempts to clear objects only up to i. */ objc = i; goto finally; } Tcl_IncrRefCount(objv[i]); } } *pobjc = objc; return objv; finally: Tkapp_CallDeallocArgs(objv, objStore, objc); return NULL; } /* Convert the results of a command call into a Python objects. */ static PyObject* Tkapp_CallResult(TkappObject *self) { PyObject *res = NULL; if(self->wantobjects) { Tcl_Obj *value = Tcl_GetObjResult(self->interp); /* Not sure whether the IncrRef is necessary, but something may overwrite the interpreter result while we are converting it. */ Tcl_IncrRefCount(value); res = FromObj((PyObject*)self, value); Tcl_DecrRefCount(value); } else { const char *s = Tcl_GetStringResult(self->interp); const char *p = s; /* If the result contains any bytes with the top bit set, it's UTF-8 and we should decode it to Unicode */ #ifdef Py_USING_UNICODE while (*p != '\0') { if (*p & 0x80) break; p++; } if (*p == '\0') res = PyString_FromStringAndSize(s, (int)(p-s)); else { /* Convert UTF-8 to Unicode string */ p = strchr(p, '\0'); res = PyUnicode_DecodeUTF8(s, (int)(p-s), "strict"); if (res == NULL) { PyErr_Clear(); res = PyString_FromStringAndSize(s, (int)(p-s)); } } #else p = strchr(p, '\0'); res = PyString_FromStringAndSize(s, (int)(p-s)); #endif } return res; } /* Tkapp_CallProc is the event procedure that is executed in the context of the Tcl interpreter thread. Initially, it holds the Tcl lock, and doesn't hold the Python lock. */ static int Tkapp_CallProc(Tkapp_CallEvent *e, int flags) { Tcl_Obj *objStore[ARGSZ]; Tcl_Obj **objv; int objc; int i; ENTER_PYTHON objv = Tkapp_CallArgs(e->args, objStore, &objc); if (!objv) { PyErr_Fetch(e->exc_type, e->exc_value, e->exc_tb); *(e->res) = NULL; } LEAVE_PYTHON if (!objv) goto done; i = Tcl_EvalObjv(e->self->interp, objc, objv, e->flags); ENTER_PYTHON if (i == TCL_ERROR) { *(e->res) = NULL; *(e->exc_type) = NULL; *(e->exc_tb) = NULL; *(e->exc_value) = PyObject_CallFunction( Tkinter_TclError, "s", Tcl_GetStringResult(e->self->interp)); } else { *(e->res) = Tkapp_CallResult(e->self); } LEAVE_PYTHON done: /* Wake up calling thread. */ Tcl_MutexLock(&call_mutex); Tcl_ConditionNotify(&e->done); Tcl_MutexUnlock(&call_mutex); return 1; } /* This is the main entry point for calling a Tcl command. It supports three cases, with regard to threading: 1. Tcl is not threaded: Must have the Tcl lock, then can invoke command in the context of the calling thread. 2. Tcl is threaded, caller of the command is in the interpreter thread: Execute the command in the calling thread. Since the Tcl lock will not be used, we can merge that with case 1. 3. Tcl is threaded, caller is in a different thread: Must queue an event to the interpreter thread. Allocation of Tcl objects needs to occur in the interpreter thread, so we ship the PyObject* args to the target thread, and perform processing there. */ static PyObject * Tkapp_Call(PyObject *_self, PyObject *args) { Tcl_Obj *objStore[ARGSZ]; Tcl_Obj **objv = NULL; int objc, i; PyObject *res = NULL; TkappObject *self = (TkappObject*)_self; /* Could add TCL_EVAL_GLOBAL if wrapped by GlobalCall... */ int flags = TCL_EVAL_DIRECT; if (self->threaded && self->thread_id != Tcl_GetCurrentThread()) { /* We cannot call the command directly. Instead, we must marshal the parameters to the interpreter thread. */ Tkapp_CallEvent *ev; PyObject *exc_type, *exc_value, *exc_tb; if (!WaitForMainloop(self)) return NULL; ev = (Tkapp_CallEvent*)ckalloc(sizeof(Tkapp_CallEvent)); ev->ev.proc = (Tcl_EventProc*)Tkapp_CallProc; ev->self = self; ev->args = args; ev->res = &res; ev->exc_type = &exc_type; ev->exc_value = &exc_value; ev->exc_tb = &exc_tb; ev->done = (Tcl_Condition)0; Tkapp_ThreadSend(self, (Tcl_Event*)ev, &ev->done, &call_mutex); if (res == NULL) { if (exc_type) PyErr_Restore(exc_type, exc_value, exc_tb); else PyErr_SetObject(Tkinter_TclError, exc_value); } } else { objv = Tkapp_CallArgs(args, objStore, &objc); if (!objv) return NULL; ENTER_TCL i = Tcl_EvalObjv(self->interp, objc, objv, flags); ENTER_OVERLAP if (i == TCL_ERROR) Tkinter_Error(_self); else res = Tkapp_CallResult(self); LEAVE_OVERLAP_TCL Tkapp_CallDeallocArgs(objv, objStore, objc); } return res; } static PyObject * Tkapp_GlobalCall(PyObject *self, PyObject *args) { /* Could do the same here as for Tkapp_Call(), but this is not used much, so I can't be bothered. Unfortunately Tcl doesn't export a way for the user to do what all its Global* variants do (save and reset the scope pointer, call the local version, restore the saved scope pointer). */ char *cmd; PyObject *res = NULL; CHECK_TCL_APPARTMENT; cmd = Merge(args); if (cmd) { int err; ENTER_TCL err = Tcl_GlobalEval(Tkapp_Interp(self), cmd); ENTER_OVERLAP if (err == TCL_ERROR) res = Tkinter_Error(self); else res = PyString_FromString(Tkapp_Result(self)); LEAVE_OVERLAP_TCL ckfree(cmd); } return res; } static PyObject * Tkapp_Eval(PyObject *self, PyObject *args) { char *script; PyObject *res = NULL; int err; if (!PyArg_ParseTuple(args, "s:eval", &script)) return NULL; CHECK_TCL_APPARTMENT; ENTER_TCL err = Tcl_Eval(Tkapp_Interp(self), script); ENTER_OVERLAP if (err == TCL_ERROR) res = Tkinter_Error(self); else res = PyString_FromString(Tkapp_Result(self)); LEAVE_OVERLAP_TCL return res; } static PyObject * Tkapp_GlobalEval(PyObject *self, PyObject *args) { char *script; PyObject *res = NULL; int err; if (!PyArg_ParseTuple(args, "s:globaleval", &script)) return NULL; CHECK_TCL_APPARTMENT; ENTER_TCL err = Tcl_GlobalEval(Tkapp_Interp(self), script); ENTER_OVERLAP if (err == TCL_ERROR) res = Tkinter_Error(self); else res = PyString_FromString(Tkapp_Result(self)); LEAVE_OVERLAP_TCL return res; } static PyObject * Tkapp_EvalFile(PyObject *self, PyObject *args) { char *fileName; PyObject *res = NULL; int err; if (!PyArg_ParseTuple(args, "s:evalfile", &fileName)) return NULL; CHECK_TCL_APPARTMENT; ENTER_TCL err = Tcl_EvalFile(Tkapp_Interp(self), fileName); ENTER_OVERLAP if (err == TCL_ERROR) res = Tkinter_Error(self); else res = PyString_FromString(Tkapp_Result(self)); LEAVE_OVERLAP_TCL return res; } static PyObject * Tkapp_Record(PyObject *self, PyObject *args) { char *script; PyObject *res = NULL; int err; if (!PyArg_ParseTuple(args, "s", &script)) return NULL; CHECK_TCL_APPARTMENT; ENTER_TCL err = Tcl_RecordAndEval(Tkapp_Interp(self), script, TCL_NO_EVAL); ENTER_OVERLAP if (err == TCL_ERROR) res = Tkinter_Error(self); else res = PyString_FromString(Tkapp_Result(self)); LEAVE_OVERLAP_TCL return res; } static PyObject * Tkapp_AddErrorInfo(PyObject *self, PyObject *args) { char *msg; if (!PyArg_ParseTuple(args, "s:adderrorinfo", &msg)) return NULL; CHECK_TCL_APPARTMENT; ENTER_TCL Tcl_AddErrorInfo(Tkapp_Interp(self), msg); LEAVE_TCL Py_INCREF(Py_None); return Py_None; } /** Tcl Variable **/ TCL_DECLARE_MUTEX(var_mutex) typedef const char* (*EventFunc1)(Tcl_Interp*, const char*, int); typedef const char* (*EventFunc2)(Tcl_Interp*, const char*, const char*, int); typedef const char* (*EventFunc3)(Tcl_Interp*, const char*, const char*, const char*, int); typedef struct VarEvent { Tcl_Event ev; /* must be first */ TkappObject *self; char* arg1; char* arg2; char* arg3; int flags; EventFunc1 func1; EventFunc2 func2; EventFunc3 func3; PyObject **res; PyObject **exc; Tcl_Condition cond; int coderesult; } VarEvent; static const char* var_perform(VarEvent *ev) { if (!ev->arg2 && !ev->arg2) return ev->func1(ev->self->interp, ev->arg1, ev->flags); if (!ev->arg3) return ev->func2(ev->self->interp, ev->arg1, ev->arg2, ev->flags); return ev->func3(ev->self->interp, ev->arg1, ev->arg2, ev->arg3, ev->flags); } static void var_fill_result(VarEvent *ev, const char* res) { if (ev->coderesult) { if ((int)res != TCL_ERROR) { Py_INCREF(Py_None); *(ev->res) = Py_None; return; } } else if (res) { *(ev->res) = PyString_FromString(res); return; } *(ev->res) = NULL; *(ev->exc) = PyObject_CallFunction( Tkinter_TclError, "s", Tcl_GetStringResult(ev->self->interp)); } static int var_proc(VarEvent* ev, int flags) { const char *result = var_perform(ev); ENTER_PYTHON var_fill_result(ev, result); Tcl_MutexLock(&var_mutex); Tcl_ConditionNotify(&ev->cond); Tcl_MutexUnlock(&var_mutex); LEAVE_PYTHON return 1; } static PyObject* var_invoke(PyObject *_self, char* arg1, char* arg2, char* arg3, int flags, EventFunc1 func1, EventFunc2 func2, EventFunc3 func3, int coderesult) { VarEvent _ev; TkappObject *self = (TkappObject*)_self; VarEvent *ev = self->threaded ? (VarEvent*)ckalloc(sizeof(VarEvent)) : &_ev; PyObject *res, *exc; ev->self = self; ev->arg1 = arg1; ev->arg2 = arg2; ev->arg3 = arg3; ev->flags = flags; ev->func1 = func1; ev->func2 = func2; ev->func3 = func3; ev->coderesult = coderesult; ev->res = &res; ev->exc = &exc; if (self->threaded && self->thread_id != Tcl_GetCurrentThread()) { /* The current thread is not the interpreter thread. Marshal the call to the interpreter thread, then wait for completion. */ if (!WaitForMainloop(self)) return NULL; ev->cond = NULL; ev->ev.proc = (Tcl_EventProc*)var_proc; Tkapp_ThreadSend(self, (Tcl_Event*)ev, &ev->cond, &var_mutex); } else { /* Tcl is not threaded, or this is the interpreter thread. To perform the call, we must hold the TCL lock. To receive the results, we must also hold the Python lock. */ const char *result; ENTER_TCL result = var_perform(ev); ENTER_OVERLAP var_fill_result(ev, result); LEAVE_OVERLAP_TCL } if (!res) { PyErr_SetObject(Tkinter_TclError, exc); return NULL; } return res; } static PyObject* var_invoke2(PyObject *_self, char* arg1, char* arg2, char* arg3, int flags, int (*func1)(Tcl_Interp*, const char*, int), int (*func2)(Tcl_Interp*, const char*, const char*, int), int (*func3)(Tcl_Interp*, const char*, const char*, const char*, int)) { return var_invoke(_self, arg1, arg2, arg3, flags, (EventFunc1)func1, (EventFunc2)func2, (EventFunc3)func3, 1); } static PyObject * SetVar(PyObject *self, PyObject *args, int flags) { char *name1, *name2, *s; PyObject *res; PyObject *newValue; PyObject *tmp; tmp = PyList_New(0); if (!tmp) return NULL; if (PyArg_ParseTuple(args, "sO:setvar", &name1, &newValue)) { /* XXX Merge? */ s = AsString(newValue, tmp); if (s == NULL) return NULL; res = var_invoke(self, name1, s, NULL, flags, NULL, Tcl_SetVar, NULL, 0); } else { PyErr_Clear(); if (PyArg_ParseTuple(args, "ssO:setvar", &name1, &name2, &newValue)) { s = AsString(newValue, tmp); if (s == NULL) return NULL; res = var_invoke(self, name1, name2, s, flags, NULL, NULL, Tcl_SetVar2, 0); } else { Py_DECREF(tmp); return NULL; } } Py_DECREF(tmp); if (!res) return NULL; Py_DECREF(res); Py_INCREF(Py_None); return Py_None; } static PyObject * Tkapp_SetVar(PyObject *self, PyObject *args) { return SetVar(self, args, TCL_LEAVE_ERR_MSG); } static PyObject * Tkapp_GlobalSetVar(PyObject *self, PyObject *args) { return SetVar(self, args, TCL_LEAVE_ERR_MSG | TCL_GLOBAL_ONLY); } static PyObject * GetVar(PyObject *self, PyObject *args, int flags) { char *name1, *name2=NULL; PyObject *res = NULL; if (!PyArg_ParseTuple(args, "s|s:getvar", &name1, &name2)) return NULL; res = var_invoke(self, name1, name2, NULL, flags, Tcl_GetVar, Tcl_GetVar2, NULL, 0); return res; } static PyObject * Tkapp_GetVar(PyObject *self, PyObject *args) { return GetVar(self, args, TCL_LEAVE_ERR_MSG); } static PyObject * Tkapp_GlobalGetVar(PyObject *self, PyObject *args) { return GetVar(self, args, TCL_LEAVE_ERR_MSG | TCL_GLOBAL_ONLY); } static PyObject * UnsetVar(PyObject *self, PyObject *args, int flags) { char *name1, *name2=NULL; PyObject *res = NULL; if (!PyArg_ParseTuple(args, "s|s:unsetvar", &name1, &name2)) return NULL; res = var_invoke2(self, name1, name2, NULL, flags, Tcl_UnsetVar, Tcl_UnsetVar2, NULL); return res; } static PyObject * Tkapp_UnsetVar(PyObject *self, PyObject *args) { return UnsetVar(self, args, TCL_LEAVE_ERR_MSG); } static PyObject * Tkapp_GlobalUnsetVar(PyObject *self, PyObject *args) { return UnsetVar(self, args, TCL_LEAVE_ERR_MSG | TCL_GLOBAL_ONLY); } /** Tcl to Python **/ static PyObject * Tkapp_GetInt(PyObject *self, PyObject *args) { char *s; int v; if (PyTuple_Size(args) == 1) { PyObject* o = PyTuple_GetItem(args, 0); if (PyInt_Check(o)) { Py_INCREF(o); return o; } } if (!PyArg_ParseTuple(args, "s:getint", &s)) return NULL; if (Tcl_GetInt(Tkapp_Interp(self), s, &v) == TCL_ERROR) return Tkinter_Error(self); return Py_BuildValue("i", v); } static PyObject * Tkapp_GetDouble(PyObject *self, PyObject *args) { char *s; double v; if (PyTuple_Size(args) == 1) { PyObject *o = PyTuple_GetItem(args, 0); if (PyFloat_Check(o)) { Py_INCREF(o); return o; } } if (!PyArg_ParseTuple(args, "s:getdouble", &s)) return NULL; if (Tcl_GetDouble(Tkapp_Interp(self), s, &v) == TCL_ERROR) return Tkinter_Error(self); return Py_BuildValue("d", v); } static PyObject * Tkapp_GetBoolean(PyObject *self, PyObject *args) { char *s; int v; if (PyTuple_Size(args) == 1) { PyObject *o = PyTuple_GetItem(args, 0); if (PyInt_Check(o)) { Py_INCREF(o); return o; } } if (!PyArg_ParseTuple(args, "s:getboolean", &s)) return NULL; if (Tcl_GetBoolean(Tkapp_Interp(self), s, &v) == TCL_ERROR) return Tkinter_Error(self); return Py_BuildValue("i", v); } static PyObject * Tkapp_ExprString(PyObject *self, PyObject *args) { char *s; PyObject *res = NULL; int retval; if (!PyArg_ParseTuple(args, "s:exprstring", &s)) return NULL; CHECK_TCL_APPARTMENT; ENTER_TCL retval = Tcl_ExprString(Tkapp_Interp(self), s); ENTER_OVERLAP if (retval == TCL_ERROR) res = Tkinter_Error(self); else res = Py_BuildValue("s", Tkapp_Result(self)); LEAVE_OVERLAP_TCL return res; } static PyObject * Tkapp_ExprLong(PyObject *self, PyObject *args) { char *s; PyObject *res = NULL; int retval; long v; if (!PyArg_ParseTuple(args, "s:exprlong", &s)) return NULL; CHECK_TCL_APPARTMENT; ENTER_TCL retval = Tcl_ExprLong(Tkapp_Interp(self), s, &v); ENTER_OVERLAP if (retval == TCL_ERROR) res = Tkinter_Error(self); else res = Py_BuildValue("l", v); LEAVE_OVERLAP_TCL return res; } static PyObject * Tkapp_ExprDouble(PyObject *self, PyObject *args) { char *s; PyObject *res = NULL; double v; int retval; if (!PyArg_ParseTuple(args, "s:exprdouble", &s)) return NULL; CHECK_TCL_APPARTMENT; PyFPE_START_PROTECT("Tkapp_ExprDouble", return 0) ENTER_TCL retval = Tcl_ExprDouble(Tkapp_Interp(self), s, &v); ENTER_OVERLAP PyFPE_END_PROTECT(retval) if (retval == TCL_ERROR) res = Tkinter_Error(self); else res = Py_BuildValue("d", v); LEAVE_OVERLAP_TCL return res; } static PyObject * Tkapp_ExprBoolean(PyObject *self, PyObject *args) { char *s; PyObject *res = NULL; int retval; int v; if (!PyArg_ParseTuple(args, "s:exprboolean", &s)) return NULL; CHECK_TCL_APPARTMENT; ENTER_TCL retval = Tcl_ExprBoolean(Tkapp_Interp(self), s, &v); ENTER_OVERLAP if (retval == TCL_ERROR) res = Tkinter_Error(self); else res = Py_BuildValue("i", v); LEAVE_OVERLAP_TCL return res; } static PyObject * Tkapp_SplitList(PyObject *self, PyObject *args) { char *list; int argc; char **argv; PyObject *v; int i; if (PyTuple_Size(args) == 1) { v = PyTuple_GetItem(args, 0); if (PyTuple_Check(v)) { Py_INCREF(v); return v; } } if (!PyArg_ParseTuple(args, "et:splitlist", "utf-8", &list)) return NULL; if (Tcl_SplitList(Tkapp_Interp(self), list, &argc, &argv) == TCL_ERROR) return Tkinter_Error(self); if (!(v = PyTuple_New(argc))) return NULL; for (i = 0; i < argc; i++) { PyObject *s = PyString_FromString(argv[i]); if (!s || PyTuple_SetItem(v, i, s)) { Py_DECREF(v); v = NULL; goto finally; } } finally: ckfree(FREECAST argv); return v; } static PyObject * Tkapp_Split(PyObject *self, PyObject *args) { char *list; if (PyTuple_Size(args) == 1) { PyObject* o = PyTuple_GetItem(args, 0); if (PyTuple_Check(o)) { o = SplitObj(o); return o; } } if (!PyArg_ParseTuple(args, "et:split", "utf-8", &list)) return NULL; return Split(list); } static PyObject * Tkapp_Merge(PyObject *self, PyObject *args) { char *s = Merge(args); PyObject *res = NULL; if (s) { res = PyString_FromString(s); ckfree(s); } return res; } /** Tcl Command **/ /* Client data struct */ typedef struct { PyObject *self; PyObject *func; } PythonCmd_ClientData; static int PythonCmd_Error(Tcl_Interp *interp) { errorInCmd = 1; PyErr_Fetch(&excInCmd, &valInCmd, &trbInCmd); LEAVE_PYTHON return TCL_ERROR; } /* This is the Tcl command that acts as a wrapper for Python * function or method. */ static int PythonCmd(ClientData clientData, Tcl_Interp *interp, int argc, char *argv[]) { PythonCmd_ClientData *data = (PythonCmd_ClientData *)clientData; PyObject *self, *func, *arg, *res, *tmp; int i, rv; char *s; ENTER_PYTHON /* TBD: no error checking here since we know, via the * Tkapp_CreateCommand() that the client data is a two-tuple */ self = data->self; func = data->func; /* Create argument list (argv1, ..., argvN) */ if (!(arg = PyTuple_New(argc - 1))) return PythonCmd_Error(interp); for (i = 0; i < (argc - 1); i++) { PyObject *s = PyString_FromString(argv[i + 1]); if (!s || PyTuple_SetItem(arg, i, s)) { Py_DECREF(arg); return PythonCmd_Error(interp); } } res = PyEval_CallObject(func, arg); Py_DECREF(arg); if (res == NULL) return PythonCmd_Error(interp); if (!(tmp = PyList_New(0))) { Py_DECREF(res); return PythonCmd_Error(interp); } s = AsString(res, tmp); if (s == NULL) { rv = PythonCmd_Error(interp); } else { Tcl_SetResult(Tkapp_Interp(self), s, TCL_VOLATILE); rv = TCL_OK; } Py_DECREF(res); Py_DECREF(tmp); LEAVE_PYTHON return rv; } static void PythonCmdDelete(ClientData clientData) { PythonCmd_ClientData *data = (PythonCmd_ClientData *)clientData; ENTER_PYTHON Py_XDECREF(data->self); Py_XDECREF(data->func); PyMem_DEL(data); LEAVE_PYTHON } TCL_DECLARE_MUTEX(command_mutex) typedef struct CommandEvent{ Tcl_Event ev; Tcl_Interp* interp; char *name; int create; int *status; ClientData *data; Tcl_Condition done; } CommandEvent; static int Tkapp_CommandProc(CommandEvent *ev, int flags) { if (ev->create) *ev->status = Tcl_CreateCommand( ev->interp, ev->name, PythonCmd, ev->data, PythonCmdDelete) == NULL; else *ev->status = Tcl_DeleteCommand(ev->interp, ev->name); Tcl_MutexLock(&command_mutex); Tcl_ConditionNotify(&ev->done); Tcl_MutexUnlock(&command_mutex); return 1; } static PyObject * Tkapp_CreateCommand(PyObject *_self, PyObject *args) { TkappObject *self = (TkappObject*)_self; PythonCmd_ClientData *data; char *cmdName; PyObject *func; int err; if (!PyArg_ParseTuple(args, "sO:createcommand", &cmdName, &func)) return NULL; if (!PyCallable_Check(func)) { PyErr_SetString(PyExc_TypeError, "command not callable"); return NULL; } if (self->threaded && self->thread_id != Tcl_GetCurrentThread() && !WaitForMainloop(self)) return NULL; data = PyMem_NEW(PythonCmd_ClientData, 1); if (!data) return NULL; Py_XINCREF(self); Py_XINCREF(func); data->self = _self; data->func = func; if (self->threaded && self->thread_id != Tcl_GetCurrentThread()) { CommandEvent *ev = (CommandEvent*)ckalloc(sizeof(CommandEvent)); ev->ev.proc = (Tcl_EventProc*)Tkapp_CommandProc; ev->interp = self->interp; ev->create = 1; ev->name = cmdName; ev->data = (ClientData)data; ev->status = &err; ev->done = NULL; Tkapp_ThreadSend(self, (Tcl_Event*)ev, &ev->done, &command_mutex); } else { ENTER_TCL err = Tcl_CreateCommand( Tkapp_Interp(self), cmdName, PythonCmd, (ClientData)data, PythonCmdDelete) == NULL; LEAVE_TCL } if (err) { PyErr_SetString(Tkinter_TclError, "can't create Tcl command"); PyMem_DEL(data); return NULL; } Py_INCREF(Py_None); return Py_None; } static PyObject * Tkapp_DeleteCommand(PyObject *_self, PyObject *args) { TkappObject *self = (TkappObject*)_self; char *cmdName; int err; if (!PyArg_ParseTuple(args, "s:deletecommand", &cmdName)) return NULL; if (self->threaded && self->thread_id != Tcl_GetCurrentThread()) { CommandEvent *ev; ev = (CommandEvent*)ckalloc(sizeof(CommandEvent)); ev->ev.proc = (Tcl_EventProc*)Tkapp_CommandProc; ev->interp = self->interp; ev->create = 0; ev->name = cmdName; ev->status = &err; ev->done = NULL; Tkapp_ThreadSend(self, (Tcl_Event*)ev, &ev->done, &command_mutex); } else { ENTER_TCL err = Tcl_DeleteCommand(self->interp, cmdName); LEAVE_TCL } if (err == -1) { PyErr_SetString(Tkinter_TclError, "can't delete Tcl command"); return NULL; } Py_INCREF(Py_None); return Py_None; } #ifdef HAVE_CREATEFILEHANDLER /** File Handler **/ typedef struct _fhcdata { PyObject *func; PyObject *file; int id; struct _fhcdata *next; } FileHandler_ClientData; static FileHandler_ClientData *HeadFHCD; static FileHandler_ClientData * NewFHCD(PyObject *func, PyObject *file, int id) { FileHandler_ClientData *p; p = PyMem_NEW(FileHandler_ClientData, 1); if (p != NULL) { Py_XINCREF(func); Py_XINCREF(file); p->func = func; p->file = file; p->id = id; p->next = HeadFHCD; HeadFHCD = p; } return p; } static void DeleteFHCD(int id) { FileHandler_ClientData *p, **pp; pp = &HeadFHCD; while ((p = *pp) != NULL) { if (p->id == id) { *pp = p->next; Py_XDECREF(p->func); Py_XDECREF(p->file); PyMem_DEL(p); } else pp = &p->next; } } static void FileHandler(ClientData clientData, int mask) { FileHandler_ClientData *data = (FileHandler_ClientData *)clientData; PyObject *func, *file, *arg, *res; ENTER_PYTHON func = data->func; file = data->file; arg = Py_BuildValue("(Oi)", file, (long) mask); res = PyEval_CallObject(func, arg); Py_DECREF(arg); if (res == NULL) { errorInCmd = 1; PyErr_Fetch(&excInCmd, &valInCmd, &trbInCmd); } Py_XDECREF(res); LEAVE_PYTHON } static PyObject * Tkapp_CreateFileHandler(PyObject *self, PyObject *args) /* args is (file, mask, func) */ { FileHandler_ClientData *data; PyObject *file, *func; int mask, tfile; if (!PyArg_ParseTuple(args, "OiO:createfilehandler", &file, &mask, &func)) return NULL; CHECK_TCL_APPARTMENT; tfile = PyObject_AsFileDescriptor(file); if (tfile < 0) return NULL; if (!PyCallable_Check(func)) { PyErr_SetString(PyExc_TypeError, "bad argument list"); return NULL; } data = NewFHCD(func, file, tfile); if (data == NULL) return NULL; /* Ought to check for null Tcl_File object... */ ENTER_TCL Tcl_CreateFileHandler(tfile, mask, FileHandler, (ClientData) data); LEAVE_TCL Py_INCREF(Py_None); return Py_None; } static PyObject * Tkapp_DeleteFileHandler(PyObject *self, PyObject *args) { PyObject *file; int tfile; if (!PyArg_ParseTuple(args, "O:deletefilehandler", &file)) return NULL; CHECK_TCL_APPARTMENT; tfile = PyObject_AsFileDescriptor(file); if (tfile < 0) return NULL; DeleteFHCD(tfile); /* Ought to check for null Tcl_File object... */ ENTER_TCL Tcl_DeleteFileHandler(tfile); LEAVE_TCL Py_INCREF(Py_None); return Py_None; } #endif /* HAVE_CREATEFILEHANDLER */ /**** Tktt Object (timer token) ****/ static PyTypeObject Tktt_Type; typedef struct { PyObject_HEAD Tcl_TimerToken token; PyObject *func; } TkttObject; static PyObject * Tktt_DeleteTimerHandler(PyObject *self, PyObject *args) { TkttObject *v = (TkttObject *)self; PyObject *func = v->func; if (!PyArg_ParseTuple(args, ":deletetimerhandler")) return NULL; if (v->token != NULL) { Tcl_DeleteTimerHandler(v->token); v->token = NULL; } if (func != NULL) { v->func = NULL; Py_DECREF(func); Py_DECREF(v); /* See Tktt_New() */ } Py_INCREF(Py_None); return Py_None; } static PyMethodDef Tktt_methods[] = { {"deletetimerhandler", Tktt_DeleteTimerHandler, METH_VARARGS}, {NULL, NULL} }; static TkttObject * Tktt_New(PyObject *func) { TkttObject *v; v = PyObject_New(TkttObject, &Tktt_Type); if (v == NULL) return NULL; Py_INCREF(func); v->token = NULL; v->func = func; /* Extra reference, deleted when called or when handler is deleted */ Py_INCREF(v); return v; } static void Tktt_Dealloc(PyObject *self) { TkttObject *v = (TkttObject *)self; PyObject *func = v->func; Py_XDECREF(func); PyObject_Del(self); } static PyObject * Tktt_Repr(PyObject *self) { TkttObject *v = (TkttObject *)self; char buf[100]; PyOS_snprintf(buf, sizeof(buf), "", v, v->func == NULL ? ", handler deleted" : ""); return PyString_FromString(buf); } static PyObject * Tktt_GetAttr(PyObject *self, char *name) { return Py_FindMethod(Tktt_methods, self, name); } static PyTypeObject Tktt_Type = { PyObject_HEAD_INIT(NULL) 0, /*ob_size */ "tktimertoken", /*tp_name */ sizeof(TkttObject), /*tp_basicsize */ 0, /*tp_itemsize */ Tktt_Dealloc, /*tp_dealloc */ 0, /*tp_print */ Tktt_GetAttr, /*tp_getattr */ 0, /*tp_setattr */ 0, /*tp_compare */ Tktt_Repr, /*tp_repr */ 0, /*tp_as_number */ 0, /*tp_as_sequence */ 0, /*tp_as_mapping */ 0, /*tp_hash */ }; /** Timer Handler **/ static void TimerHandler(ClientData clientData) { TkttObject *v = (TkttObject *)clientData; PyObject *func = v->func; PyObject *res; if (func == NULL) return; v->func = NULL; ENTER_PYTHON res = PyEval_CallObject(func, NULL); Py_DECREF(func); Py_DECREF(v); /* See Tktt_New() */ if (res == NULL) { errorInCmd = 1; PyErr_Fetch(&excInCmd, &valInCmd, &trbInCmd); } else Py_DECREF(res); LEAVE_PYTHON } static PyObject * Tkapp_CreateTimerHandler(PyObject *self, PyObject *args) { int milliseconds; PyObject *func; TkttObject *v; if (!PyArg_ParseTuple(args, "iO:createtimerhandler", &milliseconds, &func)) return NULL; if (!PyCallable_Check(func)) { PyErr_SetString(PyExc_TypeError, "bad argument list"); return NULL; } v = Tktt_New(func); v->token = Tcl_CreateTimerHandler(milliseconds, TimerHandler, (ClientData)v); return (PyObject *) v; } /** Event Loop **/ static PyObject * Tkapp_MainLoop(PyObject *_self, PyObject *args) { int threshold = 0; TkappObject *self = (TkappObject*)_self; #ifdef WITH_THREAD PyThreadState *tstate = PyThreadState_Get(); #endif if (!PyArg_ParseTuple(args, "|i:mainloop", &threshold)) return NULL; CHECK_TCL_APPARTMENT; quitMainLoop = 0; self->dispatching = 1; while (Tk_GetNumMainWindows() > threshold && !quitMainLoop && !errorInCmd) { int result; #ifdef WITH_THREAD if (self->threaded) { /* Allow other Python threads to run. */ ENTER_TCL result = Tcl_DoOneEvent(0); LEAVE_TCL } else { Py_BEGIN_ALLOW_THREADS if(tcl_lock)PyThread_acquire_lock(tcl_lock, 1); tcl_tstate = tstate; result = Tcl_DoOneEvent(TCL_DONT_WAIT); tcl_tstate = NULL; if(tcl_lock)PyThread_release_lock(tcl_lock); if (result == 0) Sleep(20); Py_END_ALLOW_THREADS } #else result = Tcl_DoOneEvent(0); #endif if (PyErr_CheckSignals() != 0) { self->dispatching = 0; return NULL; } if (result < 0) break; } self->dispatching = 0; quitMainLoop = 0; if (errorInCmd) { errorInCmd = 0; PyErr_Restore(excInCmd, valInCmd, trbInCmd); excInCmd = valInCmd = trbInCmd = NULL; return NULL; } Py_INCREF(Py_None); return Py_None; } static PyObject * Tkapp_DoOneEvent(PyObject *self, PyObject *args) { int flags = 0; int rv; if (!PyArg_ParseTuple(args, "|i:dooneevent", &flags)) return NULL; CHECK_TCL_APPARTMENT; ENTER_TCL rv = Tcl_DoOneEvent(flags); LEAVE_TCL return Py_BuildValue("i", rv); } static PyObject * Tkapp_Quit(PyObject *self, PyObject *args) { if (!PyArg_ParseTuple(args, ":quit")) return NULL; quitMainLoop = 1; Py_INCREF(Py_None); return Py_None; } static PyObject * Tkapp_InterpAddr(PyObject *self, PyObject *args) { if (!PyArg_ParseTuple(args, ":interpaddr")) return NULL; return PyInt_FromLong((long)Tkapp_Interp(self)); } static PyObject * Tkapp_WantObjects(PyObject *self, PyObject *args) { int wantobjects; if (!PyArg_ParseTuple(args, "i:wantobjects", &wantobjects)) return NULL; ((TkappObject*)self)->wantobjects = wantobjects; Py_INCREF(Py_None); return Py_None; } static PyObject * Tkapp_WillDispatch(PyObject *self, PyObject *args) { ((TkappObject*)self)->dispatching = 1; Py_INCREF(Py_None); return Py_None; } /**** Tkapp Method List ****/ static PyMethodDef Tkapp_methods[] = { {"willdispatch", Tkapp_WillDispatch, METH_NOARGS}, {"wantobjects", Tkapp_WantObjects, METH_VARARGS}, {"call", Tkapp_Call, METH_OLDARGS}, {"globalcall", Tkapp_GlobalCall, METH_OLDARGS}, {"eval", Tkapp_Eval, METH_VARARGS}, {"globaleval", Tkapp_GlobalEval, METH_VARARGS}, {"evalfile", Tkapp_EvalFile, METH_VARARGS}, {"record", Tkapp_Record, METH_VARARGS}, {"adderrorinfo", Tkapp_AddErrorInfo, METH_VARARGS}, {"setvar", Tkapp_SetVar, METH_VARARGS}, {"globalsetvar", Tkapp_GlobalSetVar, METH_VARARGS}, {"getvar", Tkapp_GetVar, METH_VARARGS}, {"globalgetvar", Tkapp_GlobalGetVar, METH_VARARGS}, {"unsetvar", Tkapp_UnsetVar, METH_VARARGS}, {"globalunsetvar", Tkapp_GlobalUnsetVar, METH_VARARGS}, {"getint", Tkapp_GetInt, METH_VARARGS}, {"getdouble", Tkapp_GetDouble, METH_VARARGS}, {"getboolean", Tkapp_GetBoolean, METH_VARARGS}, {"exprstring", Tkapp_ExprString, METH_VARARGS}, {"exprlong", Tkapp_ExprLong, METH_VARARGS}, {"exprdouble", Tkapp_ExprDouble, METH_VARARGS}, {"exprboolean", Tkapp_ExprBoolean, METH_VARARGS}, {"splitlist", Tkapp_SplitList, METH_VARARGS}, {"split", Tkapp_Split, METH_VARARGS}, {"merge", Tkapp_Merge, METH_OLDARGS}, {"createcommand", Tkapp_CreateCommand, METH_VARARGS}, {"deletecommand", Tkapp_DeleteCommand, METH_VARARGS}, #ifdef HAVE_CREATEFILEHANDLER {"createfilehandler", Tkapp_CreateFileHandler, METH_VARARGS}, {"deletefilehandler", Tkapp_DeleteFileHandler, METH_VARARGS}, #endif {"createtimerhandler", Tkapp_CreateTimerHandler, METH_VARARGS}, {"mainloop", Tkapp_MainLoop, METH_VARARGS}, {"dooneevent", Tkapp_DoOneEvent, METH_VARARGS}, {"quit", Tkapp_Quit, METH_VARARGS}, {"interpaddr", Tkapp_InterpAddr, METH_VARARGS}, {NULL, NULL} }; /**** Tkapp Type Methods ****/ static void Tkapp_Dealloc(PyObject *self) { //CHECK_TCL_APPARTMENT; ENTER_TCL Tcl_DeleteInterp(Tkapp_Interp(self)); LEAVE_TCL PyObject_Del(self); DisableEventHook(); } static PyObject * Tkapp_GetAttr(PyObject *self, char *name) { return Py_FindMethod(Tkapp_methods, self, name); } static PyTypeObject Tkapp_Type = { PyObject_HEAD_INIT(NULL) 0, /*ob_size */ "tkapp", /*tp_name */ sizeof(TkappObject), /*tp_basicsize */ 0, /*tp_itemsize */ Tkapp_Dealloc, /*tp_dealloc */ 0, /*tp_print */ Tkapp_GetAttr, /*tp_getattr */ 0, /*tp_setattr */ 0, /*tp_compare */ 0, /*tp_repr */ 0, /*tp_as_number */ 0, /*tp_as_sequence */ 0, /*tp_as_mapping */ 0, /*tp_hash */ }; /**** Tkinter Module ****/ typedef struct { PyObject* tuple; int size; /* current size */ int maxsize; /* allocated size */ } FlattenContext; static int _bump(FlattenContext* context, int size) { /* expand tuple to hold (at least) size new items. return true if successful, false if an exception was raised */ int maxsize = context->maxsize * 2; if (maxsize < context->size + size) maxsize = context->size + size; context->maxsize = maxsize; return _PyTuple_Resize(&context->tuple, maxsize) >= 0; } static int _flatten1(FlattenContext* context, PyObject* item, int depth) { /* add tuple or list to argument tuple (recursively) */ int i, size; if (depth > 1000) { PyErr_SetString(PyExc_ValueError, "nesting too deep in _flatten"); return 0; } else if (PyList_Check(item)) { size = PyList_GET_SIZE(item); /* preallocate (assume no nesting) */ if (context->size + size > context->maxsize && !_bump(context, size)) return 0; /* copy items to output tuple */ for (i = 0; i < size; i++) { PyObject *o = PyList_GET_ITEM(item, i); if (PyList_Check(o) || PyTuple_Check(o)) { if (!_flatten1(context, o, depth + 1)) return 0; } else if (o != Py_None) { if (context->size + 1 > context->maxsize && !_bump(context, 1)) return 0; Py_INCREF(o); PyTuple_SET_ITEM(context->tuple, context->size++, o); } } } else if (PyTuple_Check(item)) { /* same, for tuples */ size = PyTuple_GET_SIZE(item); if (context->size + size > context->maxsize && !_bump(context, size)) return 0; for (i = 0; i < size; i++) { PyObject *o = PyTuple_GET_ITEM(item, i); if (PyList_Check(o) || PyTuple_Check(o)) { if (!_flatten1(context, o, depth + 1)) return 0; } else if (o != Py_None) { if (context->size + 1 > context->maxsize && !_bump(context, 1)) return 0; Py_INCREF(o); PyTuple_SET_ITEM(context->tuple, context->size++, o); } } } else { PyErr_SetString(PyExc_TypeError, "argument must be sequence"); return 0; } return 1; } static PyObject * Tkinter_Flatten(PyObject* self, PyObject* args) { FlattenContext context; PyObject* item; if (!PyArg_ParseTuple(args, "O:_flatten", &item)) return NULL; context.maxsize = PySequence_Size(item); if (context.maxsize <= 0) return PyTuple_New(0); context.tuple = PyTuple_New(context.maxsize); if (!context.tuple) return NULL; context.size = 0; if (!_flatten1(&context, item,0)) return NULL; if (_PyTuple_Resize(&context.tuple, context.size)) return NULL; return context.tuple; } static PyObject * Tkinter_Create(PyObject *self, PyObject *args) { char *screenName = NULL; char *baseName = NULL; char *className = NULL; int interactive = 0; int wantobjects = 0; baseName = strrchr(Py_GetProgramName(), '/'); if (baseName != NULL) baseName++; else baseName = Py_GetProgramName(); className = "Tk"; if (!PyArg_ParseTuple(args, "|zssii:create", &screenName, &baseName, &className, &interactive, &wantobjects)) return NULL; return (PyObject *) Tkapp_New(screenName, baseName, className, interactive, wantobjects); } static PyMethodDef moduleMethods[] = { {"_flatten", Tkinter_Flatten, METH_VARARGS}, {"create", Tkinter_Create, METH_VARARGS}, #ifdef HAVE_CREATEFILEHANDLER {"createfilehandler", Tkapp_CreateFileHandler, METH_VARARGS}, {"deletefilehandler", Tkapp_DeleteFileHandler, METH_VARARGS}, #endif {"createtimerhandler", Tkapp_CreateTimerHandler, METH_VARARGS}, {"mainloop", Tkapp_MainLoop, METH_VARARGS}, {"dooneevent", Tkapp_DoOneEvent, METH_VARARGS}, {"quit", Tkapp_Quit, METH_VARARGS}, {NULL, NULL} }; #ifdef WAIT_FOR_STDIN static int stdin_ready = 0; #ifndef MS_WINDOWS static void MyFileProc(void *clientData, int mask) { stdin_ready = 1; } #endif static PyThreadState *event_tstate = NULL; static int EventHook(void) { #ifndef MS_WINDOWS int tfile; #endif #ifdef WITH_THREAD PyEval_RestoreThread(event_tstate); #endif stdin_ready = 0; errorInCmd = 0; #ifndef MS_WINDOWS tfile = fileno(stdin); Tcl_CreateFileHandler(tfile, TCL_READABLE, MyFileProc, NULL); #endif while (!errorInCmd && !stdin_ready) { int result; #ifdef MS_WINDOWS if (_kbhit()) { stdin_ready = 1; break; } #endif #if defined(WITH_THREAD) || defined(MS_WINDOWS) Py_BEGIN_ALLOW_THREADS if(tcl_lock)PyThread_acquire_lock(tcl_lock, 1); tcl_tstate = event_tstate; result = Tcl_DoOneEvent(TCL_DONT_WAIT); tcl_tstate = NULL; if(tcl_lock)PyThread_release_lock(tcl_lock); if (result == 0) Sleep(20); Py_END_ALLOW_THREADS #else result = Tcl_DoOneEvent(0); #endif if (result < 0) break; } #ifndef MS_WINDOWS Tcl_DeleteFileHandler(tfile); #endif if (errorInCmd) { errorInCmd = 0; PyErr_Restore(excInCmd, valInCmd, trbInCmd); excInCmd = valInCmd = trbInCmd = NULL; PyErr_Print(); } #ifdef WITH_THREAD PyEval_SaveThread(); #endif return 0; } #endif static void EnableEventHook(void) { #ifdef WAIT_FOR_STDIN if (PyOS_InputHook == NULL) { #ifdef WITH_THREAD event_tstate = PyThreadState_Get(); #endif PyOS_InputHook = EventHook; } #endif } static void DisableEventHook(void) { #ifdef WAIT_FOR_STDIN if (Tk_GetNumMainWindows() == 0 && PyOS_InputHook == EventHook) { PyOS_InputHook = NULL; } #endif } /* all errors will be checked in one fell swoop in init_tkinter() */ static void ins_long(PyObject *d, char *name, long val) { PyObject *v = PyInt_FromLong(val); if (v) { PyDict_SetItemString(d, name, v); Py_DECREF(v); } } static void ins_string(PyObject *d, char *name, char *val) { PyObject *v = PyString_FromString(val); if (v) { PyDict_SetItemString(d, name, v); Py_DECREF(v); } } PyMODINIT_FUNC init_tkinter(void) { PyObject *m, *d; Tkapp_Type.ob_type = &PyType_Type; #ifdef WITH_THREAD tcl_lock = PyThread_allocate_lock(); #endif m = Py_InitModule("_tkinter", moduleMethods); d = PyModule_GetDict(m); Tkinter_TclError = PyErr_NewException("_tkinter.TclError", NULL, NULL); PyDict_SetItemString(d, "TclError", Tkinter_TclError); ins_long(d, "READABLE", TCL_READABLE); ins_long(d, "WRITABLE", TCL_WRITABLE); ins_long(d, "EXCEPTION", TCL_EXCEPTION); ins_long(d, "WINDOW_EVENTS", TCL_WINDOW_EVENTS); ins_long(d, "FILE_EVENTS", TCL_FILE_EVENTS); ins_long(d, "TIMER_EVENTS", TCL_TIMER_EVENTS); ins_long(d, "IDLE_EVENTS", TCL_IDLE_EVENTS); ins_long(d, "ALL_EVENTS", TCL_ALL_EVENTS); ins_long(d, "DONT_WAIT", TCL_DONT_WAIT); ins_string(d, "TK_VERSION", TK_VERSION); ins_string(d, "TCL_VERSION", TCL_VERSION); PyDict_SetItemString(d, "TkappType", (PyObject *)&Tkapp_Type); Tktt_Type.ob_type = &PyType_Type; PyDict_SetItemString(d, "TkttType", (PyObject *)&Tktt_Type); PyTclObject_Type.ob_type = &PyType_Type; PyDict_SetItemString(d, "Tcl_Obj", (PyObject *)&PyTclObject_Type); #ifdef TK_AQUA /* Tk_MacOSXSetupTkNotifier must be called before Tcl's subsystems * start waking up. Note that Tcl_FindExecutable will do this, this * code must be above it! The original warning from * tkMacOSXAppInit.c is copied below. * * NB - You have to swap in the Tk Notifier BEFORE you start up the * Tcl interpreter for now. It probably should work to do this * in the other order, but for now it doesn't seem to. * */ Tk_MacOSXSetupTkNotifier(); #endif /* This helps the dynamic loader; in Unicode aware Tcl versions it also helps Tcl find its encodings. */ Tcl_FindExecutable(Py_GetProgramName()); if (PyErr_Occurred()) return; #if 0 /* This was not a good idea; through bindings, Tcl_Finalize() may invoke Python code but at that point the interpreter and thread state have already been destroyed! */ Py_AtExit(Tcl_Finalize); #endif #ifdef macintosh /* ** Part of this code is stolen from MacintoshInit in tkMacAppInit. ** Most of the initializations in that routine (toolbox init calls and ** such) have already been done for us, so we only need these. */ tcl_macQdPtr = &qd; Tcl_MacSetEventProc(PyMacConvertEvent); #if GENERATINGCFM mac_addlibresources(); #endif /* GENERATINGCFM */ #endif /* macintosh */ } #ifdef macintosh /* ** Anyone who embeds Tcl/Tk on the Mac must define panic(). */ void panic(char * format, ...) { va_list varg; va_start(varg, format); vfprintf(stderr, format, varg); (void) fflush(stderr); va_end(varg); Py_FatalError("Tcl/Tk panic"); } /* ** Pass events to SIOUX before passing them to Tk. */ static int PyMacConvertEvent(EventRecord *eventPtr) { WindowPtr frontwin; /* ** Sioux eats too many events, so we don't pass it everything. We ** always pass update events to Sioux, and we only pass other events if ** the Sioux window is frontmost. This means that Tk menus don't work ** in that case, but at least we can scroll the sioux window. ** Note that the SIOUXIsAppWindow() routine we use here is not really ** part of the external interface of Sioux... */ frontwin = FrontWindow(); if ( eventPtr->what == updateEvt || SIOUXIsAppWindow(frontwin) ) { if (SIOUXHandleOneEvent(eventPtr)) return 0; /* Nothing happened to the Tcl event queue */ } return TkMacConvertEvent(eventPtr); } #if GENERATINGCFM /* ** Additional Mac specific code for dealing with shared libraries. */ #include #include static int loaded_from_shlib = 0; static FSSpec library_fss; /* ** If this module is dynamically loaded the following routine should ** be the init routine. It takes care of adding the shared library to ** the resource-file chain, so that the tk routines can find their ** resources. */ OSErr pascal init_tkinter_shlib(CFragInitBlockPtr data) { __initialize(); if ( data == nil ) return noErr; if ( data->fragLocator.where == kDataForkCFragLocator ) { library_fss = *data->fragLocator.u.onDisk.fileSpec; loaded_from_shlib = 1; } else if ( data->fragLocator.where == kResourceCFragLocator ) { library_fss = *data->fragLocator.u.inSegs.fileSpec; loaded_from_shlib = 1; } return noErr; } /* ** Insert the library resources into the search path. Put them after ** the resources from the application. Again, we ignore errors. */ static mac_addlibresources(void) { if ( !loaded_from_shlib ) return; (void)FSpOpenResFile(&library_fss, fsRdPerm); } #endif /* GENERATINGCFM */ #endif /* macintosh */