/Mac/Modules/drag/dragsupport.py
http://unladen-swallow.googlecode.com/ · Python · 293 lines · 246 code · 26 blank · 21 comment · 2 complexity · 21e770a2b786eaf7d71fe9d48c77b496 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).
- import string
- # Declarations that change for each manager
- MACHEADERFILE = 'Drag.h' # The Apple header file
- MODNAME = '_Drag' # The name of the module
- OBJECTNAME = 'DragObj' # The basic name of the objects used here
- # The following is *usually* unchanged but may still require tuning
- MODPREFIX = 'Drag' # The prefix for module-wide routines
- OBJECTTYPE = 'DragRef' # 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
- DragRef = OpaqueByValueType(OBJECTTYPE, OBJECTPREFIX)
- DragItemRef = Type("ItemReference", "l")
- # Old names
- DragReference = DragRef
- ItemReference = DragItemRef
- PixMapHandle = OpaqueByValueType("PixMapHandle", "ResObj")
- RgnHandle = OpaqueByValueType("RgnHandle", "ResObj")
- AEDesc = OpaqueType('AEDesc')
- AEDesc_ptr = AEDesc
- RGBColor = OpaqueType("RGBColor", "QdRGB")
- FlavorType = OSTypeType("FlavorType")
- DragAttributes = Type("DragAttributes", "l")
- DragBehaviors = Type("DragBehaviors", "l")
- DragImageFlags = Type("DragImageFlags", "l")
- DragImageTranslucency = Type("DragImageTranslucency", "l")
- DragRegionMessage = Type("DragRegionMessage", "h")
- ZoomAcceleration = Type("ZoomAcceleration", "h")
- FlavorFlags = Type("FlavorFlags", "l")
- DragTrackingMessage = Type("DragTrackingMessage", "h")
- includestuff = includestuff + """
- #include <Carbon/Carbon.h>
- /* Callback glue routines */
- DragTrackingHandlerUPP dragglue_TrackingHandlerUPP;
- DragReceiveHandlerUPP dragglue_ReceiveHandlerUPP;
- DragSendDataUPP dragglue_SendDataUPP;
- #if 0
- DragInputUPP dragglue_InputUPP;
- DragDrawingUPP dragglue_DrawingUPP;
- #endif
- #ifdef USE_TOOLBOX_OBJECT_GLUE
- extern PyObject *_DragObj_New(DragRef);
- extern int _DragObj_Convert(PyObject *, DragRef *);
- #define DragObj_New _DragObj_New
- #define DragObj_Convert _DragObj_Convert
- #endif
- """
- finalstuff = finalstuff + """
- static pascal OSErr
- dragglue_TrackingHandler(DragTrackingMessage theMessage, WindowPtr theWindow,
- void *handlerRefCon, DragReference theDrag)
- {
- PyObject *args, *rv;
- int i;
- args = Py_BuildValue("hO&O&", theMessage, DragObj_New, theDrag, WinObj_WhichWindow, theWindow);
- if ( args == NULL )
- return -1;
- rv = PyEval_CallObject((PyObject *)handlerRefCon, args);
- Py_DECREF(args);
- if ( rv == NULL ) {
- PySys_WriteStderr("Drag: Exception in TrackingHandler\\n");
- PyErr_Print();
- return -1;
- }
- i = -1;
- if ( rv == Py_None )
- i = 0;
- else
- PyArg_Parse(rv, "l", &i);
- Py_DECREF(rv);
- return i;
- }
- static pascal OSErr
- dragglue_ReceiveHandler(WindowPtr theWindow, void *handlerRefCon,
- DragReference theDrag)
- {
- PyObject *args, *rv;
- int i;
- args = Py_BuildValue("O&O&", DragObj_New, theDrag, WinObj_WhichWindow, theWindow);
- if ( args == NULL )
- return -1;
- rv = PyEval_CallObject((PyObject *)handlerRefCon, args);
- Py_DECREF(args);
- if ( rv == NULL ) {
- PySys_WriteStderr("Drag: Exception in ReceiveHandler\\n");
- PyErr_Print();
- return -1;
- }
- i = -1;
- if ( rv == Py_None )
- i = 0;
- else
- PyArg_Parse(rv, "l", &i);
- Py_DECREF(rv);
- return i;
- }
- static pascal OSErr
- dragglue_SendData(FlavorType theType, void *dragSendRefCon,
- ItemReference theItem, DragReference theDrag)
- {
- DragObjObject *self = (DragObjObject *)dragSendRefCon;
- PyObject *args, *rv;
- int i;
- if ( self->sendproc == NULL )
- return -1;
- args = Py_BuildValue("O&l", PyMac_BuildOSType, theType, theItem);
- if ( args == NULL )
- return -1;
- rv = PyEval_CallObject(self->sendproc, args);
- Py_DECREF(args);
- if ( rv == NULL ) {
- PySys_WriteStderr("Drag: Exception in SendDataHandler\\n");
- PyErr_Print();
- return -1;
- }
- i = -1;
- if ( rv == Py_None )
- i = 0;
- else
- PyArg_Parse(rv, "l", &i);
- Py_DECREF(rv);
- return i;
- }
- #if 0
- static pascal OSErr
- dragglue_Input(Point *mouse, short *modifiers,
- void *dragSendRefCon, DragReference theDrag)
- {
- return 0;
- }
- static pascal OSErr
- dragglue_Drawing(xxxx
- void *dragSendRefCon, DragReference theDrag)
- {
- return 0;
- }
- #endif
- """
- initstuff = initstuff + """
- PyMac_INIT_TOOLBOX_OBJECT_NEW(DragRef, DragObj_New);
- PyMac_INIT_TOOLBOX_OBJECT_CONVERT(DragRef, DragObj_Convert);
- """
- variablestuff = """
- dragglue_TrackingHandlerUPP = NewDragTrackingHandlerUPP(dragglue_TrackingHandler);
- dragglue_ReceiveHandlerUPP = NewDragReceiveHandlerUPP(dragglue_ReceiveHandler);
- dragglue_SendDataUPP = NewDragSendDataUPP(dragglue_SendData);
- #if 0
- dragglue_InputUPP = NewDragInputUPP(dragglue_Input);
- dragglue_DrawingUPP = NewDragDrawingUPP(dragglue_Drawing);
- #endif
- """
- class MyObjectDefinition(PEP253Mixin, GlobalObjectDefinition):
- def outputCheckNewArg(self):
- Output("""if (itself == NULL) {
- PyErr_SetString(Drag_Error,"Cannot create null Drag");
- return NULL;
- }""")
- def outputFreeIt(self, itselfname):
- ## Output("DisposeDrag(%s);", itselfname)
- Output("Py_XDECREF(self->sendproc);")
- ## Output("Py_XDECREF(self->inputproc);")
- ## Output("Py_XDECREF(self->drawingproc);")
- def outputStructMembers(self):
- GlobalObjectDefinition.outputStructMembers(self)
- Output("PyObject *sendproc;")
- ## Output("PyObject *inputproc;")
- ## Output("PyObject *drawingproc;")
- def outputInitStructMembers(self):
- GlobalObjectDefinition.outputInitStructMembers(self)
- Output("it->sendproc = NULL;")
- ## Output("it->inputproc = NULL;")
- ## Output("it->drawingproc = NULL;")
- # Create the generator groups and link them
- module = MacModule(MODNAME, MODPREFIX, includestuff, finalstuff, initstuff, variablestuff)
- object = MyObjectDefinition(OBJECTNAME, OBJECTPREFIX, OBJECTTYPE)
- module.addobject(object)
- # Create the generator classes used to populate the lists
- Function = OSErrWeakLinkFunctionGenerator
- Method = OSErrWeakLinkMethodGenerator
- # Create and populate the lists
- functions = []
- methods = []
- execfile(INPUTFILE)
- # add the populated lists to the generator groups
- for f in functions: module.add(f)
- for f in methods: object.add(f)
- # Manual generators for the callbacks
- installtracking_body = """
- PyObject *callback;
- WindowPtr theWindow = NULL;
- OSErr _err;
- if ( !PyArg_ParseTuple(_args, "O|O&", &callback, WinObj_Convert, &theWindow) )
- return NULL;
- Py_INCREF(callback); /* Cannot decref later, too bad */
- _err = InstallTrackingHandler(dragglue_TrackingHandlerUPP, theWindow, (void *)callback);
- if (_err != noErr) return PyMac_Error(_err);
- Py_INCREF(Py_None);
- _res = Py_None;
- return _res;
- """
- installtracking = ManualGenerator("InstallTrackingHandler", installtracking_body)
- module.add(installtracking)
- installreceive_body = """
- PyObject *callback;
- WindowPtr theWindow = NULL;
- OSErr _err;
- if ( !PyArg_ParseTuple(_args, "O|O&", &callback, WinObj_Convert, &theWindow) )
- return NULL;
- Py_INCREF(callback); /* Cannot decref later, too bad */
- _err = InstallReceiveHandler(dragglue_ReceiveHandlerUPP, theWindow, (void *)callback);
- if (_err != noErr) return PyMac_Error(_err);
- Py_INCREF(Py_None);
- _res = Py_None;
- return _res;
- """
- installreceive = ManualGenerator("InstallReceiveHandler", installreceive_body)
- module.add(installreceive)
- removetracking_body = """
- WindowPtr theWindow = NULL;
- OSErr _err;
- if ( !PyArg_ParseTuple(_args, "|O&", WinObj_Convert, &theWindow) )
- return NULL;
- _err = RemoveTrackingHandler(dragglue_TrackingHandlerUPP, theWindow);
- if (_err != noErr) return PyMac_Error(_err);
- Py_INCREF(Py_None);
- _res = Py_None;
- return _res;
- """
- removetracking = ManualGenerator("RemoveTrackingHandler", removetracking_body)
- module.add(removetracking)
- removereceive_body = """
- WindowPtr theWindow = NULL;
- OSErr _err;
- if ( !PyArg_ParseTuple(_args, "|O&", WinObj_Convert, &theWindow) )
- return NULL;
- _err = RemoveReceiveHandler(dragglue_ReceiveHandlerUPP, theWindow);
- if (_err != noErr) return PyMac_Error(_err);
- Py_INCREF(Py_None);
- _res = Py_None;
- return _res;
- """
- removereceive = ManualGenerator("RemoveReceiveHandler", removereceive_body)
- module.add(removereceive)
- # generate output (open the output file as late as possible)
- SetOutputFileName(OUTPUTFILE)
- module.generate()