Drag manager interface (completely untested, so far)

Mac/Build/Drag.prj.exp

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+initDrag

Mac/Modules/drag/dragscan.py

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+# Scan <Drag.h>, generating draggen.py.
+import sys
+import os
+BGENDIR=os.path.join(sys.prefix, ':Tools:bgen:bgen')
+sys.path.append(BGENDIR)
+
+from scantools import Scanner
+from bgenlocations import TOOLBOXDIR, INCLUDEDIR
+
+MISSING_DEFINES="""
+kDragHasLeftSenderWindow	= (1 << 0)
+kDragInsideSenderApplication = (1 << 1)
+kDragInsideSenderWindow		= (1 << 2)
+kDragRegionAndImage			= (1 << 4)
+flavorSenderOnly			= (1 << 0)
+flavorSenderTranslated		= (1 << 1)
+flavorNotSaved				= (1 << 2)
+flavorSystemTranslated		= (1 << 8)
+"""
+
+
+def main():
+	input = INCLUDEDIR + "Drag.h"
+	output = "draggen.py"
+	defsoutput = TOOLBOXDIR + "Dragconst.py"
+	scanner = MyScanner(input, output, defsoutput)
+	scanner.scan()
+	scanner.close()
+	print "=== Done scanning and generating, now doing 'import dragsupport' ==="
+	import dragsupport
+	print "=== Done.  It's up to you to compile Dragmodule.c ==="
+
+class MyScanner(Scanner):
+
+	def destination(self, type, name, arglist):
+		classname = "Function"
+		listname = "functions"
+		if arglist:
+			t, n, m = arglist[0]
+			if t == 'DragReference' and m == "InMode":
+				classname = "Method"
+				listname = "methods"
+		return classname, listname
+
+	def writeinitialdefs(self):
+		self.defsfile.write("def FOUR_CHAR_CODE(x): return x\n")
+		self.defsfile.write("from TextEdit import *\n")
+		self.defsfile.write("from QuickDraw import *\n")
+		self.defsfile.write("\n")
+		# Defines unparseable in Drag.h
+		self.defsfile.write(MISSING_DEFINES)
+
+	def makeblacklistnames(self):
+		return [
+			]
+
+	def makeblacklisttypes(self):
+		return [
+			"DragTrackingHandlerUPP",
+			"DragReceiveHandlerUPP",
+			"DragSendDataUPP",
+			"DragInputUPP",
+			"DragDrawingUPP",
+			]
+
+	def makerepairinstructions(self):
+		return [
+			([("void_ptr", "*", "InMode"), ("Size", "*", "InMode")],
+			 [("OptionalInBuffer", "*", "*")]),
+			
+			([("void", "*", "OutMode"), ("Size", "*", "OutMode")],
+			 [("VarOutBuffer", "*", "InOutMode")]),
+			
+			]
+
+if __name__ == "__main__":
+	main()

Mac/Modules/drag/dragsupport.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 = '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 = MODNAME			# The prefix for module-wide routines
+OBJECTTYPE = 'DragReference'	# 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
+
+DragReference = OpaqueByValueType(OBJECTTYPE, OBJECTPREFIX)
+
+##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
+PixMapHandle = OpaqueByValueType("PixMapHandle", "ResObj")
+RgnHandle = OpaqueByValueType("RgnHandle", "ResObj")
+AEDesc = OpaqueType('AEDesc')
+AEDesc_ptr = AEDesc
+RGBColor = OpaqueType("RGBColor", "QdRGB")
+
+ItemReference = Type("ItemReference", "l")
+FlavorType = OSTypeType("FlavorType")
+DragAttributes = Type("DragAttributes", "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 <%s>""" % MACHEADERFILE + """
+
+#define resNotFound -192 /* Can't include <Errors.h> because of Python's "errors.h" */
+/* Exported by Qdmodule.c: */
+extern PyObject *QdRGB_New(RGBColor *);
+extern int QdRGB_Convert(PyObject *, RGBColor *);
+
+
+/* Exported by AEModule.c: */
+extern PyObject *AEDesc_New(AppleEvent *);
+extern int AEDesc_Convert(PyObject *, AppleEvent *);
+
+/* Callback glue routines */
+DragTrackingHandlerUPP dragglue_TrackingHandlerUPP;
+DragReceiveHandlerUPP dragglue_ReceiveHandlerUPP;
+DragSendDataUPP dragglue_SendDataUPP;
+#if 0
+DragInputUPP dragglue_InputUPP;
+DragDrawingUPP dragglue_DrawingUPP;
+#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 )
+		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 )
+		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 )
+		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
+
+"""
+
+variablestuff = """
+dragglue_TrackingHandlerUPP = NewDragTrackingHandlerProc(dragglue_TrackingHandler);
+dragglue_ReceiveHandlerUPP = NewDragReceiveHandlerProc(dragglue_ReceiveHandler);
+dragglue_SendDataUPP = NewDragSendDataProc(dragglue_SendData);
+#if 0
+dragglue_InputUPP = NewDragInputProc(dragglue_Input);
+dragglue_DrawingUPP = NewDragDrawingProc(dragglue_Drawing);
+#endif
+"""    
+
+class MyObjectDefinition(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 = OSErrFunctionGenerator
+Method = OSErrMethodGenerator
+
+# 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);
+	return Py_None;
+"""
+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);
+	return Py_None;
+"""
+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);
+	return Py_None;
+"""
+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);
+	return Py_None;
+"""
+removereceive = ManualGenerator("RemoveReceiveHandler", removereceive_body)
+module.add(removereceive)
+
+# generate output (open the output file as late as possible)
+SetOutputFileName(OUTPUTFILE)
+module.generate()