cpython/Mac/Modules/qd/qdsupport.py

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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 = 'QuickDraw.h' # The Apple header file
MODNAME = 'Qd' # The name of the module
OBJECTNAME = 'Graf' # 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 + 'Ptr' # 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
EXTRAFILE = string.lower(MODPREFIX) + 'edit.py' # A similar file but hand-made
OUTPUTFILE = MODNAME + "module.c" # The file generated by this program
from macsupport import *
# Create the type objects
class TextThingieClass(FixedInputBufferType):
def getargsCheck(self, name):
pass
TextThingie = TextThingieClass(None)
# These are temporary!
RgnHandle = OpaqueByValueType("RgnHandle", "ResObj")
OptRgnHandle = OpaqueByValueType("RgnHandle", "OptResObj")
PicHandle = OpaqueByValueType("PicHandle", "ResObj")
PolyHandle = OpaqueByValueType("PolyHandle", "ResObj")
PixMapHandle = OpaqueByValueType("PixMapHandle", "ResObj")
PixPatHandle = OpaqueByValueType("PixPatHandle", "ResObj")
PatHandle = OpaqueByValueType("PatHandle", "ResObj")
CursHandle = OpaqueByValueType("CursHandle", "ResObj")
CCrsrHandle = OpaqueByValueType("CCrsrHandle", "ResObj")
CIconHandle = OpaqueByValueType("CIconHandle", "ResObj")
CTabHandle = OpaqueByValueType("CTabHandle", "ResObj")
ITabHandle = OpaqueByValueType("ITabHandle", "ResObj")
GDHandle = OpaqueByValueType("GDHandle", "ResObj")
CGrafPtr = OpaqueByValueType("CGrafPtr", "GrafObj")
GrafPtr = OpaqueByValueType("GrafPtr", "GrafObj")
BitMap_ptr = OpaqueByValueType("BitMapPtr", "BMObj")
RGBColor = OpaqueType('RGBColor', 'QdRGB')
RGBColor_ptr = RGBColor
FontInfo = OpaqueType('FontInfo', 'QdFI')
Cursor_ptr = StructInputBufferType('Cursor')
Pattern = StructOutputBufferType('Pattern')
Pattern_ptr = StructInputBufferType('Pattern')
PenState = StructOutputBufferType('PenState')
PenState_ptr = StructInputBufferType('PenState')
includestuff = includestuff + """
#include <%s>""" % MACHEADERFILE + """
#define resNotFound -192 /* Can't include <Errors.h> because of Python's "errors.h" */
/*
** Parse/generate RGB records
*/
PyObject *QdRGB_New(itself)
RGBColorPtr itself;
{
return Py_BuildValue("lll", (long)itself->red, (long)itself->green, (long)itself->blue);
}
QdRGB_Convert(v, p_itself)
PyObject *v;
RGBColorPtr p_itself;
{
long red, green, blue;
if( !PyArg_ParseTuple(v, "lll", &red, &green, &blue) )
return 0;
p_itself->red = (unsigned short)red;
p_itself->green = (unsigned short)green;
p_itself->blue = (unsigned short)blue;
return 1;
}
/*
** Generate FontInfo records
*/
static
PyObject *QdFI_New(itself)
FontInfo *itself;
{
return Py_BuildValue("hhhh", itself->ascent, itself->descent,
itself->widMax, itself->leading);
}
"""
variablestuff = """
{
PyObject *o;
o = QDGA_New();
if (o == NULL || PyDict_SetItemString(d, "qd", o) != 0)
Py_FatalError("can't initialize Qd.qd");
}
"""
## not yet...
##
##class Region_ObjectDefinition(GlobalObjectDefinition):
## def outputCheckNewArg(self):
## Output("if (itself == NULL) return PyMac_Error(resNotFound);")
## def outputFreeIt(self, itselfname):
## Output("DisposeRegion(%s);", itselfname)
##
##class Polygon_ObjectDefinition(GlobalObjectDefinition):
## def outputCheckNewArg(self):
## Output("if (itself == NULL) return PyMac_Error(resNotFound);")
## def outputFreeIt(self, itselfname):
## Output("KillPoly(%s);", itselfname)
class MyGRObjectDefinition(GlobalObjectDefinition):
def outputCheckNewArg(self):
Output("if (itself == NULL) return PyMac_Error(resNotFound);")
def outputCheckConvertArg(self):
OutLbrace("if (DlgObj_Check(v) || WinObj_Check(v))")
Output("*p_itself = ((GrafPortObject *)v)->ob_itself;")
Output("return 1;")
OutRbrace()
def outputGetattrHook(self):
Output("""
{ CGrafPtr itself_color = (CGrafPtr)self->ob_itself;
if ( strcmp(name, "data") == 0 )
return PyString_FromStringAndSize((char *)self->ob_itself, sizeof(GrafPort));
if ( (itself_color->portVersion&0xc000) == 0xc000 ) {
/* Color-only attributes */
if ( strcmp(name, "portBits") == 0 )
/* XXXX Do we need HLock() stuff here?? */
return BMObj_New((BitMapPtr)*itself_color->portPixMap);
if ( strcmp(name, "grafVars") == 0 )
return Py_BuildValue("O&", ResObj_New, (Handle)itself_color->visRgn);
if ( strcmp(name, "chExtra") == 0 )
return Py_BuildValue("h", itself_color->chExtra);
if ( strcmp(name, "pnLocHFrac") == 0 )
return Py_BuildValue("h", itself_color->pnLocHFrac);
if ( strcmp(name, "bkPixPat") == 0 )
return Py_BuildValue("O&", ResObj_New, (Handle)itself_color->bkPixPat);
if ( strcmp(name, "rgbFgColor") == 0 )
return Py_BuildValue("O&", QdRGB_New, &itself_color->rgbFgColor);
if ( strcmp(name, "rgbBkColor") == 0 )
return Py_BuildValue("O&", QdRGB_New, &itself_color->rgbBkColor);
if ( strcmp(name, "pnPixPat") == 0 )
return Py_BuildValue("O&", ResObj_New, (Handle)itself_color->pnPixPat);
if ( strcmp(name, "fillPixPat") == 0 )
return Py_BuildValue("O&", ResObj_New, (Handle)itself_color->fillPixPat);
} else {
/* Mono-only attributes */
if ( strcmp(name, "portBits") == 0 )
return BMObj_New(&self->ob_itself->portBits);
if ( strcmp(name, "bkPat") == 0 )
return Py_BuildValue("s#", (char *)&self->ob_itself->bkPat, sizeof(Pattern));
if ( strcmp(name, "fillPat") == 0 )
return Py_BuildValue("s#", (char *)&self->ob_itself->fillPat, sizeof(Pattern));
if ( strcmp(name, "pnPat") == 0 )
return Py_BuildValue("s#", (char *)&self->ob_itself->pnPat, sizeof(Pattern));
}
/*
** Accessible for both color/mono windows.
** portVersion is really color-only, but we put it here
** for convenience
*/
if ( strcmp(name, "portVersion") == 0 )
return Py_BuildValue("h", itself_color->portVersion);
if ( strcmp(name, "device") == 0 )
return PyInt_FromLong((long)self->ob_itself->device);
if ( strcmp(name, "portRect") == 0 )
return Py_BuildValue("O&", PyMac_BuildRect, &self->ob_itself->portRect);
if ( strcmp(name, "visRgn") == 0 )
return Py_BuildValue("O&", ResObj_New, (Handle)self->ob_itself->visRgn);
if ( strcmp(name, "clipRgn") == 0 )
return Py_BuildValue("O&", ResObj_New, (Handle)self->ob_itself->clipRgn);
if ( strcmp(name, "pnLoc") == 0 )
return Py_BuildValue("O&", PyMac_BuildPoint, self->ob_itself->pnLoc);
if ( strcmp(name, "pnSize") == 0 )
return Py_BuildValue("O&", PyMac_BuildPoint, self->ob_itself->pnSize);
if ( strcmp(name, "pnMode") == 0 )
return Py_BuildValue("h", self->ob_itself->pnMode);
if ( strcmp(name, "pnVis") == 0 )
return Py_BuildValue("h", self->ob_itself->pnVis);
if ( strcmp(name, "txFont") == 0 )
return Py_BuildValue("h", self->ob_itself->txFont);
if ( strcmp(name, "txFace") == 0 )
return Py_BuildValue("h", (short)self->ob_itself->txFace);
if ( strcmp(name, "txMode") == 0 )
return Py_BuildValue("h", self->ob_itself->txMode);
if ( strcmp(name, "txSize") == 0 )
return Py_BuildValue("h", self->ob_itself->txSize);
if ( strcmp(name, "spExtra") == 0 )
return Py_BuildValue("O&", PyMac_BuildFixed, self->ob_itself->spExtra);
/* XXXX Add more, as needed */
/* This one is so we can compare grafports: */
if ( strcmp(name, "_id") == 0 )
return Py_BuildValue("l", (long)self->ob_itself);
}""")
class MyBMObjectDefinition(GlobalObjectDefinition):
def outputCheckNewArg(self):
Output("if (itself == NULL) return PyMac_Error(resNotFound);")
def outputStructMembers(self):
# We need to more items: a pointer to privately allocated data
# and a python object we're referring to.
Output("%s ob_itself;", self.itselftype)
Output("PyObject *referred_object;")
Output("BitMap *referred_bitmap;")
def outputInitStructMembers(self):
Output("it->ob_itself = %sitself;", self.argref)
Output("it->referred_object = NULL;")
Output("it->referred_bitmap = NULL;")
def outputCleanupStructMembers(self):
Output("Py_XDECREF(self->referred_object);")
Output("if (self->referred_bitmap) free(self->referred_bitmap);")
def outputGetattrHook(self):
Output("""if ( strcmp(name, "baseAddr") == 0 )
return PyInt_FromLong((long)self->ob_itself->baseAddr);
if ( strcmp(name, "rowBytes") == 0 )
return PyInt_FromLong((long)self->ob_itself->rowBytes);
if ( strcmp(name, "bounds") == 0 )
return Py_BuildValue("O&", PyMac_BuildRect, &self->ob_itself->bounds);
/* XXXX Add more, as needed */
if ( strcmp(name, "bitmap_data") == 0 )
return PyString_FromStringAndSize((char *)self->ob_itself, sizeof(BitMap));
if ( strcmp(name, "pixmap_data") == 0 )
return PyString_FromStringAndSize((char *)self->ob_itself, sizeof(PixMap));
""")
# This object is instanciated once, and will access qd globals.
class QDGlobalsAccessObjectDefinition(ObjectDefinition):
def outputStructMembers(self):
pass
def outputNew(self):
Output()
Output("%sPyObject *%s_New()", self.static, self.prefix)
OutLbrace()
Output("%s *it;", self.objecttype)
Output("it = PyObject_NEW(%s, &%s);", self.objecttype, self.typename)
Output("if (it == NULL) return NULL;")
Output("return (PyObject *)it;")
OutRbrace()
def outputConvert(self):
pass
def outputCleanupStructMembers(self):
pass
def outputGetattrHook(self):
Output("""
if ( strcmp(name, "arrow") == 0 )
return PyString_FromStringAndSize((char *)&qd.arrow, sizeof(qd.arrow));
if ( strcmp(name, "black") == 0 )
return PyString_FromStringAndSize((char *)&qd.black, sizeof(qd.black));
if ( strcmp(name, "white") == 0 )
return PyString_FromStringAndSize((char *)&qd.white, sizeof(qd.white));
if ( strcmp(name, "gray") == 0 )
return PyString_FromStringAndSize((char *)&qd.gray, sizeof(qd.gray));
if ( strcmp(name, "ltGray") == 0 )
return PyString_FromStringAndSize((char *)&qd.ltGray, sizeof(qd.ltGray));
if ( strcmp(name, "dkGray") == 0 )
return PyString_FromStringAndSize((char *)&qd.dkGray, sizeof(qd.dkGray));
if ( strcmp(name, "screenBits") == 0 )
return BMObj_New(&qd.screenBits);
if ( strcmp(name, "thePort") == 0 )
return GrafObj_New(qd.thePort);
if ( strcmp(name, "randSeed") == 0 )
return Py_BuildValue("l", &qd.randSeed);
""")
# Create the generator groups and link them
module = MacModule(MODNAME, MODPREFIX, includestuff, finalstuff, initstuff, variablestuff)
##r_object = Region_ObjectDefinition('Region', 'QdRgn', 'RgnHandle')
##po_object = Polygon_ObjectDefinition('Polygon', 'QdPgn', 'PolyHandle')
##module.addobject(r_object)
##module.addobject(po_object)
gr_object = MyGRObjectDefinition("GrafPort", "GrafObj", "GrafPtr")
module.addobject(gr_object)
bm_object = MyBMObjectDefinition("BitMap", "BMObj", "BitMapPtr")
module.addobject(bm_object)
qd_object = QDGlobalsAccessObjectDefinition("QDGlobalsAccess", "QDGA", "XXXX")
module.addobject(qd_object)
# Create the generator classes used to populate the lists
Function = OSErrFunctionGenerator
Method = OSErrMethodGenerator
# Create and populate the lists
functions = []
methods = []
execfile(INPUTFILE)
execfile(EXTRAFILE)
# add the populated lists to the generator groups
# (in a different wordl the scan program would generate this)
for f in functions: module.add(f)
##for f in r_methods: r_object.add(f)
##for f in po_methods: po_object.add(f)
#
# We manually generate a routine to create a BitMap from python data.
#
BitMap_body = """
BitMap *ptr;
PyObject *source;
Rect bounds;
int rowbytes;
char *data;
if ( !PyArg_ParseTuple(_args, "O!iO&", &PyString_Type, &source, &rowbytes, PyMac_GetRect,
&bounds) )
return NULL;
data = PyString_AsString(source);
if ((ptr=(BitMap *)malloc(sizeof(BitMap))) == NULL )
return PyErr_NoMemory();
ptr->baseAddr = (Ptr)data;
ptr->rowBytes = rowbytes;
ptr->bounds = bounds;
if ( (_res = BMObj_New(ptr)) == NULL ) {
free(ptr);
return NULL;
}
((BitMapObject *)_res)->referred_object = source;
Py_INCREF(source);
((BitMapObject *)_res)->referred_bitmap = ptr;
return _res;
"""
f = ManualGenerator("BitMap", BitMap_body)
f.docstring = lambda: """Take (string, int, Rect) argument and create BitMap"""
module.add(f)
#
# And again, for turning a correctly-formatted structure into the object
#
RawBitMap_body = """
BitMap *ptr;
PyObject *source;
if ( !PyArg_ParseTuple(_args, "O!", &PyString_Type, &source) )
return NULL;
if ( PyString_Size(source) != sizeof(BitMap) && PyString_Size(source) != sizeof(PixMap) ) {
PyErr_BadArgument();
return NULL;
}
ptr = (BitMapPtr)PyString_AsString(source);
if ( (_res = BMObj_New(ptr)) == NULL ) {
return NULL;
}
((BitMapObject *)_res)->referred_object = source;
Py_INCREF(source);
return _res;
"""
f = ManualGenerator("RawBitMap", RawBitMap_body)
f.docstring = lambda: """Take string BitMap and turn into BitMap object"""
module.add(f)
# generate output (open the output file as late as possible)
SetOutputFileName(OUTPUTFILE)
module.generate()
SetOutputFile() # Close it