248 lines
7.0 KiB
Python
248 lines
7.0 KiB
Python
# This script generates a Python interface for an Apple Macintosh Manager.
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# It uses the "bgen" package to generate C code.
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# The function specifications are generated by scanning the mamager's header file,
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# using the "scantools" package (customized for this particular manager).
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import string
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# Declarations that change for each manager
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MACHEADERFILE = 'Controls.h' # The Apple header file
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MODNAME = 'Ctl' # The name of the module
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OBJECTNAME = 'Control' # The basic name of the objects used here
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# The following is *usually* unchanged but may still require tuning
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MODPREFIX = MODNAME # The prefix for module-wide routines
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OBJECTTYPE = OBJECTNAME + 'Handle' # The C type used to represent them
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OBJECTPREFIX = MODPREFIX + 'Obj' # The prefix for object methods
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INPUTFILE = string.lower(MODPREFIX) + 'gen.py' # The file generated by the scanner
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OUTPUTFILE = MODNAME + "module.c" # The file generated by this program
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from macsupport import *
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# Create the type objects
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ControlHandle = OpaqueByValueType(OBJECTTYPE, OBJECTPREFIX)
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ControlRef = ControlHandle
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ExistingControlHandle = OpaqueByValueType(OBJECTTYPE, "CtlObj_WhichControl", "BUG")
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RgnHandle = OpaqueByValueType("RgnHandle", "ResObj")
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CCTabHandle = OpaqueByValueType("CCTabHandle", "ResObj")
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AuxCtlHandle = OpaqueByValueType("AuxCtlHandle", "ResObj")
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ControlPartCode = Type("ControlPartCode", "h")
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DragConstraint = Type("DragConstraint", "h")
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ControlVariant = Type("ControlVariant", "h")
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IconTransformType = Type("IconTransformType", "h")
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ControlButtonGraphicAlignment = Type("ControlButtonGraphicAlignment", "h")
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ControlButtonTextAlignment = Type("ControlButtonTextAlignment", "h")
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ControlButtonTextPlacement = Type("ControlButtonTextPlacement", "h")
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ControlContentType = Type("ControlContentType", "h")
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ControlFocusPart = Type("ControlFocusPart", "h")
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ControlFontStyleRec = OpaqueType('ControlFontStyleRec', 'ControlFontStyle')
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ControlFontStyleRec_ptr = ControlFontStyleRec
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includestuff = includestuff + """
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#include <%s>""" % MACHEADERFILE + """
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#define resNotFound -192 /* Can't include <Errors.h> because of Python's "errors.h" */
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extern PyObject *CtlObj_WhichControl(ControlHandle); /* Forward */
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extern PyObject *QdRGB_New(RGBColorPtr);
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extern QdRGB_Convert(PyObject *, RGBColorPtr);
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#ifdef THINK_C
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#define ControlActionUPP ProcPtr
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#endif
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/*
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** Parse/generate ControlFontStyleRec records
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*/
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#if 0 /* Not needed */
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PyObject *ControlFontStyle_New(itself)
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ControlFontStyleRec *itself;
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{
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return Py_BuildValue("hhhhhhO&O&", itself->flags, itself->font,
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itself->size, itself->style, itself->mode, itself->just,
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QdRGB_New, &itself->foreColor, QdRGB_New, &itself->backColor);
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}
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#endif
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ControlFontStyle_Convert(v, itself)
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PyObject *v;
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ControlFontStyleRec *itself;
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{
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return PyArg_ParseTuple(v, "hhhhhhO&O&", &itself->flags,
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&itself->font, &itself->size, &itself->style, &itself->mode,
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&itself->just, QdRGB_Convert, &itself->foreColor,
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QdRGB_Convert, &itself->backColor);
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}
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/* TrackControl callback support */
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static PyObject *tracker;
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static ControlActionUPP mytracker_upp;
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extern int settrackfunc(PyObject *); /* forward */
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extern void clrtrackfunc(void); /* forward */
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"""
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finalstuff = finalstuff + """
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PyObject *
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CtlObj_WhichControl(ControlHandle c)
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{
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PyObject *it;
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/* XXX What if we find a control belonging to some other package? */
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if (c == NULL)
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it = NULL;
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else
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it = (PyObject *) GetControlReference(c);
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if (it == NULL || ((ControlObject *)it)->ob_itself != c)
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it = Py_None;
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Py_INCREF(it);
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return it;
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}
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static int
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settrackfunc(obj)
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PyObject *obj;
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{
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if (tracker) {
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PyErr_SetString(Ctl_Error, "Tracker function in use");
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return 0;
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}
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tracker = obj;
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Py_INCREF(tracker);
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}
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static void
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clrtrackfunc()
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{
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Py_XDECREF(tracker);
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tracker = 0;
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}
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static pascal void
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mytracker(ctl, part)
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ControlHandle ctl;
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short part;
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{
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PyObject *args, *rv=0;
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args = Py_BuildValue("(O&i)", CtlObj_WhichControl, ctl, (int)part);
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if (args && tracker) {
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rv = PyEval_CallObject(tracker, args);
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Py_DECREF(args);
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}
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if (rv)
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Py_DECREF(rv);
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else
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fprintf(stderr, "TrackControl: exception in tracker function\\n");
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}
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"""
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initstuff = initstuff + """
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mytracker_upp = NewControlActionProc(mytracker);
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"""
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class MyObjectDefinition(GlobalObjectDefinition):
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def outputCheckNewArg(self):
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Output("if (itself == NULL) return PyMac_Error(resNotFound);")
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def outputInitStructMembers(self):
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GlobalObjectDefinition.outputInitStructMembers(self)
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Output("SetControlReference(itself, (long)it);")
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def outputCleanupStructMembers(self):
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Output("if (self->ob_itself) SetControlReference(self->ob_itself, (long)0); /* Make it forget about us */")
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# Create the generator groups and link them
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module = MacModule(MODNAME, MODPREFIX, includestuff, finalstuff, initstuff)
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object = MyObjectDefinition(OBJECTNAME, OBJECTPREFIX, OBJECTTYPE)
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module.addobject(object)
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# Create the generator classes used to populate the lists
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Function = OSErrFunctionGenerator
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Method = OSErrMethodGenerator
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# Create and populate the lists
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functions = []
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methods = []
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execfile(INPUTFILE)
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execfile('ctledit.py')
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# add the populated lists to the generator groups
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for f in functions: module.add(f)
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for f in methods: object.add(f)
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# Manual generator for TrackControl, due to callback ideosyncracies
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trackcontrol_body = """
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ControlPartCode _rv;
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Point startPoint;
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ControlActionUPP upp = 0;
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PyObject *callback = 0;
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if (!PyArg_ParseTuple(_args, "O&|O",
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PyMac_GetPoint, &startPoint, &callback))
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return NULL;
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if (callback && callback != Py_None) {
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if (PyInt_Check(callback) && PyInt_AS_LONG(callback) == -1)
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upp = (ControlActionUPP)-1;
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else {
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settrackfunc(callback);
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upp = mytracker_upp;
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}
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}
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_rv = TrackControl(_self->ob_itself,
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startPoint,
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upp);
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clrtrackfunc();
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_res = Py_BuildValue("h",
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_rv);
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return _res;
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"""
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f = ManualGenerator("TrackControl", trackcontrol_body);
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#f.docstring = "(Point startPoint [,trackercallback]) -> (ControlPartCode _rv)"
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object.add(f)
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# And manual generators to get/set popup menu information
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getpopupdata_body = """
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PopupPrivateDataHandle hdl;
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if ( (*_self->ob_itself)->contrlData == NULL ) {
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PyErr_SetString(Ctl_Error, "No contrlData handle in control");
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return 0;
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}
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hdl = (PopupPrivateDataHandle)(*_self->ob_itself)->contrlData;
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HLock((Handle)hdl);
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_res = Py_BuildValue("O&i", MenuObj_New, (*hdl)->mHandle, (int)(*hdl)->mID);
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HUnlock((Handle)hdl);
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return _res;
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"""
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f = ManualGenerator("GetPopupData", getpopupdata_body)
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object.add(f)
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setpopupdata_body = """
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PopupPrivateDataHandle hdl;
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MenuHandle mHandle;
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short mID;
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if (!PyArg_ParseTuple(_args, "O&h", MenuObj_Convert, &mHandle, &mID) )
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return 0;
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if ( (*_self->ob_itself)->contrlData == NULL ) {
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PyErr_SetString(Ctl_Error, "No contrlData handle in control");
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return 0;
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}
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hdl = (PopupPrivateDataHandle)(*_self->ob_itself)->contrlData;
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(*hdl)->mHandle = mHandle;
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(*hdl)->mID = mID;
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Py_INCREF(Py_None);
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return Py_None;
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"""
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f = ManualGenerator("SetPopupData", setpopupdata_body)
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object.add(f)
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# generate output (open the output file as late as possible)
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SetOutputFileName(OUTPUTFILE)
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module.generate()
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