cpython/Mac/Modules/win/winsupport.py

# 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 = 'Windows.h'		# The Apple header file
MODNAME = 'Win'				# The name of the module
OBJECTNAME = 'Window'			# 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
EDITFILE = string.lower(MODPREFIX) + 'edit.py' # The manual definitions
OUTPUTFILE = MODNAME + "module.c"	# The file generated by this program

from macsupport import *

# Create the type objects

WindowPtr = OpaqueByValueType(OBJECTTYPE, OBJECTPREFIX)
WindowRef = WindowPtr
WindowPeek = OpaqueByValueType("WindowPeek", OBJECTPREFIX)
WindowPeek.passInput = lambda name: "(WindowPeek)(%s)" % name
CGrafPtr = OpaqueByValueType("CGrafPtr", "GrafObj")
GrafPtr = OpaqueByValueType("GrafPtr", "GrafObj")

RgnHandle = OpaqueByValueType("RgnHandle", "ResObj")
PicHandle = OpaqueByValueType("PicHandle", "ResObj")
WCTabHandle = OpaqueByValueType("WCTabHandle", "ResObj")
AuxWinHandle = OpaqueByValueType("AuxWinHandle", "ResObj")
PixPatHandle = OpaqueByValueType("PixPatHandle", "ResObj")
AliasHandle = OpaqueByValueType("AliasHandle", "ResObj")
IconRef = OpaqueByValueType("IconRef", "ResObj")

WindowRegionCode = Type("WindowRegionCode", "H")
WindowClass = Type("WindowClass", "l")
WindowAttributes = Type("WindowAttributes", "l")
WindowPositionMethod = Type("WindowPositionMethod", "l")
WindowTransitionEffect = Type("WindowTransitionEffect", "l")
WindowTransitionAction = Type("WindowTransitionAction", "l")
RGBColor = OpaqueType("RGBColor", "QdRGB")
PropertyCreator = OSTypeType("PropertyCreator")
PropertyTag = OSTypeType("PropertyTag")

includestuff = includestuff + """
#include <%s>""" % MACHEADERFILE + """
/* Function to dispose a window, with a "normal" calling sequence */
static void
PyMac_AutoDisposeWindow(WindowPtr w)
{
	DisposeWindow(w);
}
"""

finalstuff = finalstuff + """
/* Return the object corresponding to the window, or NULL */

PyObject *
WinObj_WhichWindow(w)
	WindowPtr w;
{
	PyObject *it;
	
	if (w == NULL) {
		it = Py_None;
		Py_INCREF(it);
	} else {
		it = (PyObject *) GetWRefCon(w);
		if (it == NULL || ((WindowObject *)it)->ob_itself != w) {
			it = WinObj_New(w);
			((WindowObject *)it)->ob_freeit = NULL;
		} else {
			Py_INCREF(it);
		}
	}
	return it;
}
"""

class MyObjectDefinition(GlobalObjectDefinition):
	def outputCheckNewArg(self):
		Output("if (itself == NULL) return PyMac_Error(resNotFound);")
	def outputStructMembers(self):
		GlobalObjectDefinition.outputStructMembers(self)
		Output("void (*ob_freeit)(%s ptr);", self.itselftype)
	def outputInitStructMembers(self):
		GlobalObjectDefinition.outputInitStructMembers(self)
		Output("SetWRefCon(itself, (long)it);")
		Output("it->ob_freeit = PyMac_AutoDisposeWindow;")
	def outputCheckConvertArg(self):
		OutLbrace("if (DlgObj_Check(v))")
		Output("*p_itself = DlgObj_ConvertToWindow(v);")
		Output("return 1;")
		OutRbrace()
		Out("""
		if (v == Py_None) { *p_itself = NULL; return 1; }
		if (PyInt_Check(v)) { *p_itself = (WindowPtr)PyInt_AsLong(v); return 1; }
		""")
	def outputCleanupStructMembers(self):
		Output("if (self->ob_itself) SetWRefCon(self->ob_itself, 0);")
		Output("if (self->ob_freeit && self->ob_itself)")
		OutLbrace()
		Output("self->ob_freeit(self->ob_itself);")
		OutRbrace()
		Output("self->ob_itself = NULL;")
##	def outputFreeIt(self, itselfname):
##		Output("DisposeWindow(%s);", itselfname)
# From here on it's basically all boiler plate...

# 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)

# Add manual routines for converting integer WindowPtr's (as returned by
# various event routines)  and Dialog objects to a WindowObject.
whichwin_body = """
long ptr;

if ( !PyArg_ParseTuple(_args, "i", &ptr) )
	return NULL;
return WinObj_WhichWindow((WindowPtr)ptr);
"""

f = ManualGenerator("WhichWindow", whichwin_body)
f.docstring = lambda : "Resolve an integer WindowPtr address to a Window object"

functions.append(f)

# And add the routines that access the internal bits of a window struct. They
# are currently #defined in Windows.h, they will be real routines in Copland
# (at which time this execfile can go)
execfile(EDITFILE)

# 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 methods: object.add(f)



# generate output (open the output file as late as possible)
SetOutputFileName(OUTPUTFILE)
module.generate()