/Mac/Modules/cg/cgsupport.py
http://unladen-swallow.googlecode.com/ · Python · 192 lines · 141 code · 34 blank · 17 comment · 1 complexity · ef9ab44be53abfce4b7d1f44a3805691 MD5 · raw file
- # 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).
- #error missing SetActionFilter
- import string
- # Declarations that change for each manager
- MODNAME = '_CG' # The name of the module
- # The following is *usually* unchanged but may still require tuning
- MODPREFIX = 'CG' # The prefix for module-wide routines
- 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 *
- CGrafPtr = OpaqueByValueType("CGrafPtr", "GrafObj")
- RgnHandle = OpaqueByValueType("RgnHandle", "ResObj")
- # Create the type objects
- includestuff = includestuff + """
- #include <ApplicationServices/ApplicationServices.h>
- extern int GrafObj_Convert(PyObject *, GrafPtr *);
- /*
- ** Manual converters
- */
- PyObject *CGPoint_New(CGPoint *itself)
- {
- return Py_BuildValue("(ff)",
- itself->x,
- itself->y);
- }
- int
- CGPoint_Convert(PyObject *v, CGPoint *p_itself)
- {
- if( !PyArg_Parse(v, "(ff)",
- &p_itself->x,
- &p_itself->y) )
- return 0;
- return 1;
- }
- PyObject *CGRect_New(CGRect *itself)
- {
- return Py_BuildValue("(ffff)",
- itself->origin.x,
- itself->origin.y,
- itself->size.width,
- itself->size.height);
- }
- int
- CGRect_Convert(PyObject *v, CGRect *p_itself)
- {
- if( !PyArg_Parse(v, "(ffff)",
- &p_itself->origin.x,
- &p_itself->origin.y,
- &p_itself->size.width,
- &p_itself->size.height) )
- return 0;
- return 1;
- }
- PyObject *CGAffineTransform_New(CGAffineTransform *itself)
- {
- return Py_BuildValue("(ffffff)",
- itself->a,
- itself->b,
- itself->c,
- itself->d,
- itself->tx,
- itself->ty);
- }
- int
- CGAffineTransform_Convert(PyObject *v, CGAffineTransform *p_itself)
- {
- if( !PyArg_Parse(v, "(ffffff)",
- &p_itself->a,
- &p_itself->b,
- &p_itself->c,
- &p_itself->d,
- &p_itself->tx,
- &p_itself->ty) )
- return 0;
- return 1;
- }
- """
- class MyOpaqueByValueType(OpaqueByValueType):
- """Sort of a mix between OpaqueByValueType and OpaqueType."""
- def mkvalueArgs(self, name):
- return "%s, &%s" % (self.new, name)
- CGPoint = MyOpaqueByValueType('CGPoint', 'CGPoint')
- CGRect = MyOpaqueByValueType('CGRect', 'CGRect')
- CGAffineTransform = MyOpaqueByValueType('CGAffineTransform', 'CGAffineTransform')
- char_ptr = Type("char *", "s")
- CGTextEncoding = int
- CGLineCap = int
- CGLineJoin = int
- CGTextDrawingMode = int
- CGPathDrawingMode = int
- CGInterpolationQuality = int
- # The real objects
- CGContextRef = OpaqueByValueType("CGContextRef", "CGContextRefObj")
- class MyObjectDefinition(PEP253Mixin, GlobalObjectDefinition):
- def outputStructMembers(self):
- ObjectDefinition.outputStructMembers(self)
- def outputCleanupStructMembers(self):
- Output("CGContextRelease(self->ob_itself);")
- # Create the generator groups and link them
- module = MacModule(MODNAME, MODPREFIX, includestuff, finalstuff, initstuff)
- CGContextRef_object = MyObjectDefinition('CGContextRef', 'CGContextRefObj', 'CGContextRef')
- # ADD object here
- module.addobject(CGContextRef_object)
- Function = FunctionGenerator
- Method = MethodGenerator
- CGContextRef_methods = []
- # ADD _methods initializer here
- execfile(INPUTFILE)
- # manual method, lives in Quickdraw.h
- f = Method(void, 'SyncCGContextOriginWithPort',
- (CGContextRef, 'ctx', InMode),
- (CGrafPtr, 'port', InMode),
- )
- CGContextRef_methods.append(f)
- # manual method, lives in Quickdraw.h
- f = Method(void, 'ClipCGContextToRegion',
- (CGContextRef, 'ctx', InMode),
- (Rect, 'portRect', InMode),
- (RgnHandle, 'region', InMode),
- )
- CGContextRef_methods.append(f)
- CreateCGContextForPort_body = """\
- GrafPtr port;
- CGContextRef ctx;
- OSStatus _err;
- if (!PyArg_ParseTuple(_args, "O&", GrafObj_Convert, &port))
- return NULL;
- _err = CreateCGContextForPort(port, &ctx);
- if (_err != noErr)
- if (_err != noErr) return PyMac_Error(_err);
- _res = Py_BuildValue("O&", CGContextRefObj_New, ctx);
- return _res;
- """
- f = ManualGenerator("CreateCGContextForPort", CreateCGContextForPort_body);
- f.docstring = lambda: "(CGrafPtr) -> CGContextRef"
- module.add(f)
- # ADD add forloop here
- for f in CGContextRef_methods:
- CGContextRef_object.add(f)
- # generate output (open the output file as late as possible)
- SetOutputFileName(OUTPUTFILE)
- module.generate()