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# This script generates a Python interface for an Apple Macintosh Manager.
# It uses the "bgen" package to generate C code.
# The function specifications are generated by scanning the mamager's header file,
# using the "scantools" package (customized for this particular manager).
import string
# Declarations that change for each manager
MACHEADERFILE = 'Controls.h' # The Apple header file
MODNAME = 'Ctl' # The name of the module
OBJECTNAME = 'Control' # The basic name of the objects used here
# The following is *usually* unchanged but may still require tuning
MODPREFIX = MODNAME # The prefix for module-wide routines
OBJECTTYPE = OBJECTNAME + 'Handle' # The C type used to represent them
OBJECTPREFIX = MODPREFIX + 'Obj' # The prefix for object methods
INPUTFILE = string.lower(MODPREFIX) + 'gen.py' # The file generated by the scanner
OUTPUTFILE = MODNAME + "module.c" # The file generated by this program
from macsupport import *
# Create the type objects
ControlHandle = OpaqueByValueType(OBJECTTYPE, OBJECTPREFIX)
ControlRef = ControlHandle
ExistingControlHandle = OpaqueByValueType(OBJECTTYPE, "CtlObj_WhichControl", "BUG")
RgnHandle = OpaqueByValueType("RgnHandle", "ResObj")
CCTabHandle = OpaqueByValueType("CCTabHandle", "ResObj")
AuxCtlHandle = OpaqueByValueType("AuxCtlHandle", "ResObj")
ControlPartCode = Type("ControlPartCode", "h")
DragConstraint = Type("DragConstraint", "h")
ControlVariant = Type("ControlVariant", "h")
IconTransformType = Type("IconTransformType", "h")
ControlButtonGraphicAlignment = Type("ControlButtonGraphicAlignment", "h")
ControlButtonTextAlignment = Type("ControlButtonTextAlignment", "h")
ControlButtonTextPlacement = Type("ControlButtonTextPlacement", "h")
ControlContentType = Type("ControlContentType", "h")
ControlFocusPart = Type("ControlFocusPart", "h")
ControlFontStyleRec = OpaqueType('ControlFontStyleRec', 'ControlFontStyle')
ControlFontStyleRec_ptr = ControlFontStyleRec
includestuff = includestuff + """
#include <%s>""" % MACHEADERFILE + """
#define resNotFound -192 /* Can't include <Errors.h> because of Python's "errors.h" */
extern PyObject *CtlObj_WhichControl(ControlHandle); /* Forward */
extern PyObject *QdRGB_New(RGBColorPtr);
extern QdRGB_Convert(PyObject *, RGBColorPtr);
#ifdef THINK_C
#define ControlActionUPP ProcPtr
#endif
/*
** Parse/generate ControlFontStyleRec records
*/
#if 0 /* Not needed */
PyObject *ControlFontStyle_New(itself)
ControlFontStyleRec *itself;
{
return Py_BuildValue("hhhhhhO&O&", itself->flags, itself->font,
itself->size, itself->style, itself->mode, itself->just,
QdRGB_New, &itself->foreColor, QdRGB_New, &itself->backColor);
}
#endif
ControlFontStyle_Convert(v, itself)
PyObject *v;
ControlFontStyleRec *itself;
{
return PyArg_ParseTuple(v, "hhhhhhO&O&", &itself->flags,
&itself->font, &itself->size, &itself->style, &itself->mode,
&itself->just, QdRGB_Convert, &itself->foreColor,
QdRGB_Convert, &itself->backColor);
}
/* TrackControl callback support */
static PyObject *tracker;
static ControlActionUPP mytracker_upp;
extern int settrackfunc(PyObject *); /* forward */
extern void clrtrackfunc(void); /* forward */
"""
finalstuff = finalstuff + """
PyObject *
CtlObj_WhichControl(ControlHandle c)
{
PyObject *it;
/* XXX What if we find a control belonging to some other package? */
if (c == NULL)
it = NULL;
else
it = (PyObject *) GetControlReference(c);
if (it == NULL || ((ControlObject *)it)->ob_itself != c)
it = Py_None;
Py_INCREF(it);
return it;
}
static int
settrackfunc(obj)
PyObject *obj;
{
if (tracker) {
PyErr_SetString(Ctl_Error, "Tracker function in use");
return 0;
}
tracker = obj;
Py_INCREF(tracker);
}
static void
clrtrackfunc()
{
Py_XDECREF(tracker);
tracker = 0;
}
static pascal void
mytracker(ctl, part)
ControlHandle ctl;
short part;
{
PyObject *args, *rv=0;
args = Py_BuildValue("(O&i)", CtlObj_WhichControl, ctl, (int)part);
if (args && tracker) {
rv = PyEval_CallObject(tracker, args);
Py_DECREF(args);
}
if (rv)
Py_DECREF(rv);
else
fprintf(stderr, "TrackControl: exception in tracker function\\n");
}
"""
initstuff = initstuff + """
mytracker_upp = NewControlActionProc(mytracker);
"""
class MyObjectDefinition(GlobalObjectDefinition):
def outputCheckNewArg(self):
Output("if (itself == NULL) return PyMac_Error(resNotFound);")
def outputInitStructMembers(self):
GlobalObjectDefinition.outputInitStructMembers(self)
Output("SetControlReference(itself, (long)it);")
def outputCleanupStructMembers(self):
Output("if (self->ob_itself) SetControlReference(self->ob_itself, (long)0); /* Make it forget about us */")
# Create the generator groups and link them
module = MacModule(MODNAME, MODPREFIX, includestuff, finalstuff, initstuff)
object = MyObjectDefinition(OBJECTNAME, OBJECTPREFIX, OBJECTTYPE)
module.addobject(object)
# Create the generator classes used to populate the lists
Function = OSErrFunctionGenerator
Method = OSErrMethodGenerator
# Create and populate the lists
functions = []
methods = []
execfile(INPUTFILE)
execfile('ctledit.py')
# add the populated lists to the generator groups
for f in functions: module.add(f)
for f in methods: object.add(f)
# Manual generator for TrackControl, due to callback ideosyncracies
trackcontrol_body = """
ControlPartCode _rv;
Point startPoint;
ControlActionUPP upp = 0;
PyObject *callback = 0;
if (!PyArg_ParseTuple(_args, "O&|O",
PyMac_GetPoint, &startPoint, &callback))
return NULL;
if (callback && callback != Py_None) {
if (PyInt_Check(callback) && PyInt_AS_LONG(callback) == -1)
upp = (ControlActionUPP)-1;
else {
settrackfunc(callback);
upp = mytracker_upp;
}
}
_rv = TrackControl(_self->ob_itself,
startPoint,
upp);
clrtrackfunc();
_res = Py_BuildValue("h",
_rv);
return _res;
"""
f = ManualGenerator("TrackControl", trackcontrol_body);
#f.docstring = "(Point startPoint [,trackercallback]) -> (ControlPartCode _rv)"
object.add(f)
# generate output (open the output file as late as possible)
SetOutputFileName(OUTPUTFILE)
module.generate()
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