Mac/Modules/win/winsupport.py

   1 # This script generates a Python interface for an Apple Macintosh Manager.
   2 # It uses the "bgen" package to generate C code.
   3 # The function specifications are generated by scanning the mamager's header file,
   4 # using the "scantools" package (customized for this particular manager).
   5
   6 import string
   7
   8 # Declarations that change for each manager
   9 MACHEADERFILE = 'Windows.h'             # The Apple header file
  10 MODNAME = 'Win'                         # The name of the module
  11 OBJECTNAME = 'Window'                   # The basic name of the objects used here
  12
  13 # The following is *usually* unchanged but may still require tuning
  14 MODPREFIX = MODNAME                     # The prefix for module-wide routines
  15 OBJECTTYPE = OBJECTNAME + 'Ptr'         # The C type used to represent them
  16 OBJECTPREFIX = MODPREFIX + 'Obj'        # The prefix for object methods
  17 INPUTFILE = string.lower(MODPREFIX) + 'gen.py' # The file generated by the scanner
  18 EDITFILE = string.lower(MODPREFIX) + 'edit.py' # The manual definitions
  19 OUTPUTFILE = MODNAME + "module.c"       # The file generated by this program
  20
  21 from macsupport import *
  22
  23 # Create the type objects
  24
  25 WindowPtr = OpaqueByValueType(OBJECTTYPE, OBJECTPREFIX)
  26 WindowRef = WindowPtr
  27 WindowPeek = OpaqueByValueType("WindowPeek", OBJECTPREFIX)
  28 WindowPeek.passInput = lambda name: "(WindowPeek)(%s)" % name
  29 CGrafPtr = OpaqueByValueType("CGrafPtr", "GrafObj")
  30 GrafPtr = OpaqueByValueType("GrafPtr", "GrafObj")
  31
  32 RgnHandle = OpaqueByValueType("RgnHandle", "ResObj")
  33 PicHandle = OpaqueByValueType("PicHandle", "ResObj")
  34 WCTabHandle = OpaqueByValueType("WCTabHandle", "ResObj")
  35 AuxWinHandle = OpaqueByValueType("AuxWinHandle", "ResObj")
  36 PixPatHandle = OpaqueByValueType("PixPatHandle", "ResObj")
  37 AliasHandle = OpaqueByValueType("AliasHandle", "ResObj")
  38 IconRef = OpaqueByValueType("IconRef", "ResObj")
  39
  40 WindowRegionCode = Type("WindowRegionCode", "h")
  41 WindowClass = Type("WindowClass", "l")
  42 WindowAttributes = Type("WindowAttributes", "l")
  43 WindowPositionMethod = Type("WindowPositionMethod", "l")
  44 WindowTransitionEffect = Type("WindowTransitionEffect", "l")
  45 WindowTransitionAction = Type("WindowTransitionAction", "l")
  46 WindowRegionCode = Type("WindowRegionCode", "h")
  47 RGBColor = OpaqueType("RGBColor", "QdRGB")
  48 PropertyCreator = OSTypeType("PropertyCreator")
  49 PropertyTag = OSTypeType("PropertyTag")
  50
  51 includestuff = includestuff + """
  52 #include <%s>""" % MACHEADERFILE + """
  53
  54 extern PyObject *QdRGB_New(RGBColor *);
  55 extern int QdRGB_Convert(PyObject *, RGBColor *);
  56
  57 #define resNotFound -192 /* Can't include <Errors.h> because of Python's "errors.h" */
  58
  59 """
  60
  61 finalstuff = finalstuff + """
  62 /* Return the object corresponding to the window, or NULL */
  63
  64 PyObject *
  65 WinObj_WhichWindow(w)
  66         WindowPtr w;
  67 {
  68         PyObject *it;
  69
  70         /* XXX What if we find a stdwin window or a window belonging
  71                to some other package? */
  72         if (w == NULL)
  73                 it = NULL;
  74         else
  75                 it = (PyObject *) GetWRefCon(w);
  76         if (it == NULL || ((WindowObject *)it)->ob_itself != w)
  77                 it = Py_None;
  78         Py_INCREF(it);
  79         return it;
  80 }
  81 """
  82
  83 class MyObjectDefinition(GlobalObjectDefinition):
  84         def outputCheckNewArg(self):
  85                 Output("if (itself == NULL) return PyMac_Error(resNotFound);")
  86         def outputInitStructMembers(self):
  87                 GlobalObjectDefinition.outputInitStructMembers(self)
  88                 Output("SetWRefCon(itself, (long)it);")
  89         def outputCheckConvertArg(self):
  90                 OutLbrace("if (DlgObj_Check(v))")
  91                 Output("*p_itself = ((WindowObject *)v)->ob_itself;")
  92                 Output("return 1;")
  93                 OutRbrace()
  94                 Out("""
  95                 if (v == Py_None) { *p_itself = NULL; return 1; }
  96                 if (PyInt_Check(v)) { *p_itself = (WindowPtr)PyInt_AsLong(v); return 1; }
  97                 """)
  98         def outputFreeIt(self, itselfname):
  99                 Output("DisposeWindow(%s);", itselfname)
 100 # From here on it's basically all boiler plate...
 101
 102 # Create the generator groups and link them
 103 module = MacModule(MODNAME, MODPREFIX, includestuff, finalstuff, initstuff)
 104 object = MyObjectDefinition(OBJECTNAME, OBJECTPREFIX, OBJECTTYPE)
 105 module.addobject(object)
 106
 107 # Create the generator classes used to populate the lists
 108 Function = OSErrFunctionGenerator
 109 Method = OSErrMethodGenerator
 110
 111 # Create and populate the lists
 112 functions = []
 113 methods = []
 114 execfile(INPUTFILE)
 115
 116 # Add manual routines for converting integer WindowPtr's (as returned by
 117 # various event routines)  and Dialog objects to a WindowObject.
 118 whichwin_body = """
 119 long ptr;
 120
 121 if ( !PyArg_ParseTuple(_args, "i", &ptr) )
 122         return NULL;
 123 return WinObj_WhichWindow((WindowPtr)ptr);
 124 """
 125
 126 f = ManualGenerator("WhichWindow", whichwin_body)
 127 f.docstring = lambda : "Resolve an integer WindowPtr address to a Window object"
 128
 129 functions.append(f)
 130
 131 # And add the routines that access the internal bits of a window struct. They
 132 # are currently #defined in Windows.h, they will be real routines in Copland
 133 # (at which time this execfile can go)
 134 execfile(EDITFILE)
 135
 136 # add the populated lists to the generator groups
 137 # (in a different wordl the scan program would generate this)
 138 for f in functions: module.add(f)
 139 for f in methods: object.add(f)
 140
 141
 142
 143 # generate output (open the output file as late as possible)
 144 SetOutputFileName(OUTPUTFILE)
 145 module.generate()