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 DragReference = OpaqueByValueType("DragReference", "DragObj")
  33
  34 RgnHandle = OpaqueByValueType("RgnHandle", "ResObj")
  35 PicHandle = OpaqueByValueType("PicHandle", "ResObj")
  36 WCTabHandle = OpaqueByValueType("WCTabHandle", "ResObj")
  37 AuxWinHandle = OpaqueByValueType("AuxWinHandle", "ResObj")
  38 PixPatHandle = OpaqueByValueType("PixPatHandle", "ResObj")
  39 AliasHandle = OpaqueByValueType("AliasHandle", "ResObj")
  40 IconRef = OpaqueByValueType("IconRef", "ResObj")
  41
  42 WindowRegionCode = Type("WindowRegionCode", "H")
  43 WindowClass = Type("WindowClass", "l")
  44 WindowAttributes = Type("WindowAttributes", "l")
  45 WindowPositionMethod = Type("WindowPositionMethod", "l")
  46 WindowTransitionEffect = Type("WindowTransitionEffect", "l")
  47 WindowTransitionAction = Type("WindowTransitionAction", "l")
  48 RGBColor = OpaqueType("RGBColor", "QdRGB")
  49 RGBColor_ptr = RGBColor
  50 ScrollWindowOptions = Type("ScrollWindowOptions", "l")
  51 WindowPartCode = Type("WindowPartCode", "h")
  52
  53 PropertyCreator = OSTypeType("PropertyCreator")
  54 PropertyTag = OSTypeType("PropertyTag")
  55
  56 includestuff = includestuff + """
  57 #include <%s>""" % MACHEADERFILE + """
  58
  59 #if !ACCESSOR_CALLS_ARE_FUNCTIONS
  60 /* Carbon calls that we emulate in classic mode */
  61 #define GetWindowSpareFlag(win) (((CWindowPeek)(win))->spareFlag)
  62 #define GetWindowFromPort(port) ((WindowRef)(port))
  63 #define GetWindowPortBounds(win, rectp) (*(rectp) = ((CWindowPeek)(win))->port.portRect)
  64 #endif
  65 #if ACCESSOR_CALLS_ARE_FUNCTIONS
  66 /* Classic calls that we emulate in carbon mode */
  67 #define GetWindowUpdateRgn(win, rgn) GetWindowRegion((win), kWindowUpdateRgn, (rgn))
  68 #define GetWindowStructureRgn(win, rgn) GetWindowRegion((win), kWindowStructureRgn, (rgn))
  69 #define GetWindowContentRgn(win, rgn) GetWindowRegion((win), kWindowContentRgn, (rgn))
  70 #endif
  71
  72 /* Function to dispose a window, with a "normal" calling sequence */
  73 static void
  74 PyMac_AutoDisposeWindow(WindowPtr w)
  75 {
  76         DisposeWindow(w);
  77 }
  78 """
  79
  80 finalstuff = finalstuff + """
  81 /* Return the object corresponding to the window, or NULL */
  82
  83 PyObject *
  84 WinObj_WhichWindow(w)
  85         WindowPtr w;
  86 {
  87         PyObject *it;
  88
  89         if (w == NULL) {
  90                 it = Py_None;
  91                 Py_INCREF(it);
  92         } else {
  93                 it = (PyObject *) GetWRefCon(w);
  94                 if (it == NULL || ((WindowObject *)it)->ob_itself != w || !WinObj_Check(it)) {
  95                         it = WinObj_New(w);
  96                         ((WindowObject *)it)->ob_freeit = NULL;
  97                 } else {
  98                         Py_INCREF(it);
  99                 }
 100         }
 101         return it;
 102 }
 103 """
 104
 105 class MyObjectDefinition(GlobalObjectDefinition):
 106         def outputCheckNewArg(self):
 107                 Output("if (itself == NULL) return PyMac_Error(resNotFound);")
 108         def outputStructMembers(self):
 109                 GlobalObjectDefinition.outputStructMembers(self)
 110                 Output("void (*ob_freeit)(%s ptr);", self.itselftype)
 111         def outputInitStructMembers(self):
 112                 GlobalObjectDefinition.outputInitStructMembers(self)
 113                 Output("it->ob_freeit = NULL;")
 114                 Output("if (GetWRefCon(itself) == 0)")
 115                 OutLbrace()
 116                 Output("SetWRefCon(itself, (long)it);")
 117                 Output("it->ob_freeit = PyMac_AutoDisposeWindow;")
 118                 OutRbrace()
 119         def outputCheckConvertArg(self):
 120                 OutLbrace("if (DlgObj_Check(v))")
 121                 Output("*p_itself = DlgObj_ConvertToWindow(v);")
 122                 Output("return 1;")
 123                 OutRbrace()
 124                 Out("""
 125                 if (v == Py_None) { *p_itself = NULL; return 1; }
 126                 if (PyInt_Check(v)) { *p_itself = (WindowPtr)PyInt_AsLong(v); return 1; }
 127                 """)
 128         def outputCleanupStructMembers(self):
 129                 Output("if (self->ob_freeit && self->ob_itself)")
 130                 OutLbrace()
 131                 Output("SetWRefCon(self->ob_itself, 0);")
 132                 Output("self->ob_freeit(self->ob_itself);")
 133                 OutRbrace()
 134                 Output("self->ob_itself = NULL;")
 135                 Output("self->ob_freeit = NULL;")
 136
 137         def outputCompare(self):
 138                 Output()
 139                 Output("static int %s_compare(self, other)", self.prefix)
 140                 IndentLevel()
 141                 Output("%s *self, *other;", self.objecttype)
 142                 DedentLevel()
 143                 OutLbrace()
 144                 Output("if ( self->ob_itself > other->ob_itself ) return 1;")
 145                 Output("if ( self->ob_itself < other->ob_itself ) return -1;")
 146                 Output("return 0;")
 147                 OutRbrace()
 148
 149         def outputHash(self):
 150                 Output()
 151                 Output("static int %s_hash(self)", self.prefix)
 152                 IndentLevel()
 153                 Output("%s *self;", self.objecttype)
 154                 DedentLevel()
 155                 OutLbrace()
 156                 Output("return (int)self->ob_itself;")
 157                 OutRbrace()
 158
 159         def outputRepr(self):
 160                 Output()
 161                 Output("static PyObject * %s_repr(self)", self.prefix)
 162                 IndentLevel()
 163                 Output("%s *self;", self.objecttype)
 164                 DedentLevel()
 165                 OutLbrace()
 166                 Output("char buf[100];")
 167                 Output("""sprintf(buf, "<Window object at 0x%%08.8x for 0x%%08.8x>", self, self->ob_itself);""")
 168                 Output("return PyString_FromString(buf);")
 169                 OutRbrace()
 170
 171 ##      def outputFreeIt(self, itselfname):
 172 ##              Output("DisposeWindow(%s);", itselfname)
 173 # From here on it's basically all boiler plate...
 174
 175 # Create the generator groups and link them
 176 module = MacModule(MODNAME, MODPREFIX, includestuff, finalstuff, initstuff)
 177 object = MyObjectDefinition(OBJECTNAME, OBJECTPREFIX, OBJECTTYPE)
 178 module.addobject(object)
 179
 180 # Create the generator classes used to populate the lists
 181 Function = OSErrFunctionGenerator
 182 Method = OSErrMethodGenerator
 183
 184 # Create and populate the lists
 185 functions = []
 186 methods = []
 187 execfile(INPUTFILE)
 188
 189 # Add manual routines for converting integer WindowPtr's (as returned by
 190 # various event routines)  and Dialog objects to a WindowObject.
 191 whichwin_body = """
 192 long ptr;
 193
 194 if ( !PyArg_ParseTuple(_args, "i", &ptr) )
 195         return NULL;
 196 return WinObj_WhichWindow((WindowPtr)ptr);
 197 """
 198
 199 f = ManualGenerator("WhichWindow", whichwin_body)
 200 f.docstring = lambda : "Resolve an integer WindowPtr address to a Window object"
 201
 202 functions.append(f)
 203
 204 # And add the routines that access the internal bits of a window struct. They
 205 # are currently #defined in Windows.h, they will be real routines in Copland
 206 # (at which time this execfile can go)
 207 execfile(EDITFILE)
 208
 209 # add the populated lists to the generator groups
 210 # (in a different wordl the scan program would generate this)
 211 for f in functions: module.add(f)
 212 for f in methods: object.add(f)
 213
 214
 215
 216 # generate output (open the output file as late as possible)
 217 SetOutputFileName(OUTPUTFILE)
 218 module.generate()