]> granicus.if.org Git - python/commitdiff
Added support for callbacks (for embedded objects)
authorJack Jansen <jack.jansen@cwi.nl>
Tue, 7 May 1996 15:24:01 +0000 (15:24 +0000)
committerJack Jansen <jack.jansen@cwi.nl>
Tue, 7 May 1996 15:24:01 +0000 (15:24 +0000)
Mac/Modules/waste/wastemodule.c
Mac/Modules/waste/wastescan.py
Mac/Modules/waste/wastesupport.py

index fb8f620e34ae4e42abb05b550cfae225a8ebfd10..22fd22b96e593a7408c8bdb71b44467c0159fcc9 100644 (file)
@@ -43,6 +43,7 @@ extern int BMObj_Convert(PyObject *, BitMapPtr *);
 extern PyObject *WinObj_WhichWindow(WindowPtr);
 
 #include <WASTE.h>
+#include <WEObjectHandlers.h>
 
 /* Exported by Qdmodule.c: */
 extern PyObject *QdRGB_New(RGBColor *);
@@ -50,6 +51,7 @@ extern int QdRGB_Convert(PyObject *, RGBColor *);
 
 /* Forward declaration */
 staticforward PyObject *WEOObj_New(WEObjectReference);
+staticforward PyObject *ExistingwasteObj_New(WEReference);
 
 /*
 ** Parse/generate TextStyle records
@@ -115,6 +117,103 @@ LongPt_New(LongPt *p)
        return Py_BuildValue("(ll)", p->h, p->v);
 }
 
+/* Stuff for the callbacks: */
+static PyObject *callbackdict;
+UniversalProcPtr upp_new_handler, upp_dispose_handler, upp_draw_handler, upp_click_handler;
+
+static OSErr
+any_handler(WESelector what, WEObjectReference who, PyObject *args, PyObject **rv)
+{
+       FlavorType tp;
+       PyObject *key, *func;
+       
+       if ( args == NULL ) return errAECorruptData;
+       
+       tp = WEGetObjectType(who);
+       
+       if( (key=Py_BuildValue("O&O&", PyMac_BuildOSType, tp, PyMac_BuildOSType, what)) == NULL)
+               return errAECorruptData;
+       if( (func = PyDict_GetItem(callbackdict, key)) == NULL ) {
+               Py_DECREF(key);
+               return errAEHandlerNotFound;
+       }
+       Py_INCREF(func);
+       *rv = PyEval_CallObject(func, args);
+       Py_DECREF(func);
+       Py_DECREF(key);
+       if ( *rv == NULL ) {
+               fprintf(stderr, "--Exception in callback: ");
+               PyErr_Print();
+               return errAEReplyNotArrived;
+       }
+       return 0;
+}
+
+static pascal OSErr
+my_new_handler(Point *objectSize, WEObjectReference objref)
+{
+       PyObject *args=NULL, *rv=NULL;
+       OSErr err;
+       
+       args=Py_BuildValue("(O&)", WEOObj_New, objref);
+       err = any_handler(weNewHandler, objref, args, &rv);
+       if (!err) {
+               if (!PyMac_GetPoint(rv, objectSize) )
+                       err = errAECoercionFail;
+       }
+       if ( args ) Py_DECREF(args);
+       if ( rv ) Py_DECREF(rv);
+       return err;
+}
+
+static pascal OSErr
+my_dispose_handler(WEObjectReference objref)
+{
+       PyObject *args=NULL, *rv=NULL;
+       OSErr err;
+       
+       args=Py_BuildValue("(O&)", WEOObj_New, objref);
+       err = any_handler(weDisposeHandler, objref, args, &rv);
+       if ( args ) Py_DECREF(args);
+       if ( rv ) Py_DECREF(rv);
+       return err;
+}
+
+static pascal OSErr
+my_draw_handler(Rect *destRect, WEObjectReference objref)
+{
+       PyObject *args=NULL, *rv=NULL;
+       OSErr err;
+       
+       args=Py_BuildValue("O&O&", PyMac_BuildRect, destRect, WEOObj_New, objref);
+       err = any_handler(weDrawHandler, objref, args, &rv);
+       if ( args ) Py_DECREF(args);
+       if ( rv ) Py_DECREF(rv);
+       return err;
+}
+
+static pascal Boolean
+my_click_handler(Point hitPt, EventModifiers modifiers,
+               unsigned long clickTime, WEObjectReference objref)
+{
+       PyObject *args=NULL, *rv=NULL;
+       int retvalue;
+       OSErr err;
+       
+       args=Py_BuildValue("O&llO&", PyMac_BuildPoint, hitPt,
+                       (long)modifiers, (long)clickTime, WEOObj_New, objref);
+       err = any_handler(weClickHandler, objref, args, &rv);
+       if (!err)
+               retvalue = PyInt_AsLong(rv);
+       else
+               retvalue = 0;
+       if ( args ) Py_DECREF(args);
+       if ( rv ) Py_DECREF(rv);
+       return retvalue;
+}
+               
+
+
 static PyObject *waste_Error;
 
 /* ------------------------ Object type WEO ------------------------- */
@@ -203,6 +302,20 @@ static PyObject *WEOObj_WEGetObjectSize(_self, _args)
        return _res;
 }
 
+static PyObject *WEOObj_WEGetObjectOwner(_self, _args)
+       WEOObject *_self;
+       PyObject *_args;
+{
+       PyObject *_res = NULL;
+       WEReference _rv;
+       if (!PyArg_ParseTuple(_args, ""))
+               return NULL;
+       _rv = WEGetObjectOwner(_self->ob_itself);
+       _res = Py_BuildValue("O&",
+                            ExistingwasteObj_New, _rv);
+       return _res;
+}
+
 static PyObject *WEOObj_WEGetObjectRefCon(_self, _args)
        WEOObject *_self;
        PyObject *_args;
@@ -240,6 +353,8 @@ static PyMethodDef WEOObj_methods[] = {
         "() -> (Handle _rv)"},
        {"WEGetObjectSize", (PyCFunction)WEOObj_WEGetObjectSize, 1,
         "() -> (Point _rv)"},
+       {"WEGetObjectOwner", (PyCFunction)WEOObj_WEGetObjectOwner, 1,
+        "() -> (WEReference _rv)"},
        {"WEGetObjectRefCon", (PyCFunction)WEOObj_WEGetObjectRefCon, 1,
         "() -> (long _rv)"},
        {"WESetObjectRefCon", (PyCFunction)WEOObj_WESetObjectRefCon, 1,
@@ -296,6 +411,7 @@ PyObject *wasteObj_New(itself)
        it = PyObject_NEW(wasteObject, &waste_Type);
        if (it == NULL) return NULL;
        it->ob_itself = itself;
+       WESetInfo(weRefCon, (void *)&it, itself);
        return (PyObject *)it;
 }
 wasteObj_Convert(v, p_itself)
@@ -1645,6 +1761,91 @@ static PyObject *waste_WELongPointInLongRect(_self, _args)
        return _res;
 }
 
+static PyObject *waste_STDObjectHandlers(_self, _args)
+       PyObject *_self;
+       PyObject *_args;
+{
+       PyObject *_res = NULL;
+
+               OSErr err;
+               // install the sample object handlers for pictures and sounds
+#define        kTypePicture                    'PICT'
+#define        kTypeSound                              'snd '
+               
+               if ( !PyArg_ParseTuple(_args, "") ) return NULL;
+               
+               if ((err = WEInstallObjectHandler(kTypePicture, weNewHandler,
+                                       (UniversalProcPtr) NewWENewObjectProc(HandleNewPicture), NULL)) != noErr)
+                       goto cleanup;
+               
+               if ((err = WEInstallObjectHandler(kTypePicture, weDisposeHandler,
+                                       (UniversalProcPtr) NewWEDisposeObjectProc(HandleDisposePicture), NULL)) != noErr)
+                       goto cleanup;
+               
+               if ((err = WEInstallObjectHandler(kTypePicture, weDrawHandler,
+                                       (UniversalProcPtr) NewWEDrawObjectProc(HandleDrawPicture), NULL)) != noErr)
+                       goto cleanup;
+               
+               if ((err = WEInstallObjectHandler(kTypeSound, weNewHandler,
+                                       (UniversalProcPtr) NewWENewObjectProc(HandleNewSound), NULL)) != noErr)
+                       goto cleanup;
+               
+               if ((err = WEInstallObjectHandler(kTypeSound, weDrawHandler,
+                                       (UniversalProcPtr) NewWEDrawObjectProc(HandleDrawSound), NULL)) != noErr)
+                       goto cleanup;
+               
+               if ((err = WEInstallObjectHandler(kTypeSound, weClickHandler,
+                                       (UniversalProcPtr) NewWEClickObjectProc(HandleClickSound), NULL)) != noErr)
+                       goto cleanup;
+               Py_INCREF(Py_None);
+               return Py_None;
+               
+       cleanup:
+               return PyMac_Error(err);
+
+}
+
+static PyObject *waste_WEInstallObjectHandler(_self, _args)
+       PyObject *_self;
+       PyObject *_args;
+{
+       PyObject *_res = NULL;
+
+               OSErr err;
+               FlavorType objectType;
+               WESelector selector;
+               PyObject *py_handler;
+               UniversalProcPtr handler;
+               WEReference we = NULL;
+               PyObject *key;
+               
+               
+               if ( !PyArg_ParseTuple(_args, "O&O&O|O&",
+                               PyMac_GetOSType, &objectType,
+                               PyMac_GetOSType, &selector,
+                               &py_handler,
+                               ExistingwasteObj_New, &we) ) return NULL;
+                               
+               if ( selector == weNewHandler ) handler = upp_new_handler;
+               else if ( selector == weDisposeHandler ) handler = upp_dispose_handler;
+               else if ( selector == weDrawHandler ) handler = upp_draw_handler;
+               else if ( selector == weClickHandler ) handler = upp_click_handler;
+               else return PyMac_Error(weUndefinedSelectorErr);
+                               
+               if ((key = Py_BuildValue("O&O&", 
+                               PyMac_BuildOSType, objectType, 
+                               PyMac_BuildOSType, selector)) == NULL )
+                       return NULL;
+                       
+               PyDict_SetItem(callbackdict, key, py_handler);
+               
+               err = WEInstallObjectHandler(objectType, selector, handler, we);
+               if ( err ) return PyMac_Error(err);
+               Py_INCREF(Py_None);
+               return Py_None;
+
+}
+
 static PyMethodDef waste_methods[] = {
        {"WENew", (PyCFunction)waste_WENew, 1,
         "(LongRect destRect, LongRect viewRect, unsigned long flags) -> (WEReference we)"},
@@ -1666,11 +1867,33 @@ static PyMethodDef waste_methods[] = {
         "(long hOffset, long vOffset) -> (LongRect lr)"},
        {"WELongPointInLongRect", (PyCFunction)waste_WELongPointInLongRect, 1,
         "(LongPt lp, LongRect lr) -> (Boolean _rv)"},
+       {"STDObjectHandlers", (PyCFunction)waste_STDObjectHandlers, 1,
+        NULL},
+       {"WEInstallObjectHandler", (PyCFunction)waste_WEInstallObjectHandler, 1,
+        NULL},
        {NULL, NULL, 0}
 };
 
 
 
+/* Return the object corresponding to the window, or NULL */
+
+PyObject *
+ExistingwasteObj_New(w)
+       WEReference w;
+{
+       PyObject *it = NULL;
+       
+       if (w == NULL)
+               it = NULL;
+       else
+               WEGetInfo(weRefCon, (void *)&it, w);
+       if (it == NULL || ((wasteObject *)it)->ob_itself != w)
+               it = Py_None;
+       Py_INCREF(it);
+       return it;
+}
+
 
 void initwaste()
 {
@@ -1686,6 +1909,16 @@ void initwaste()
        if (waste_Error == NULL ||
            PyDict_SetItemString(d, "Error", waste_Error) != 0)
                Py_FatalError("can't initialize waste.Error");
+
+               callbackdict = PyDict_New();
+               if (callbackdict == NULL || PyDict_SetItemString(d, "callbacks", callbackdict) != 0)
+                       Py_FatalError("can't initialize Waste.callbackdict");
+               upp_new_handler = NewWENewObjectProc(my_new_handler);
+               upp_dispose_handler = NewWENewObjectProc(my_dispose_handler);
+               upp_draw_handler = NewWENewObjectProc(my_draw_handler);
+               upp_click_handler = NewWENewObjectProc(my_click_handler);
+
+
 }
 
 /* ======================== End module waste ======================== */
index b501344a3657741ac20ab7f2935d568ab4e328c9..376ca4c10a147fb8f43ee6f586f5c2dee191f717 100644 (file)
@@ -52,7 +52,6 @@ class MyScanner(Scanner):
                        "WEDispose",
                        "WESetInfo", # Argument type unknown...
                        "WEGetInfo",
-                       "WEGetObjectOwner", # Returns ref to existing WE
                        ]
 
        def makeblacklisttypes(self):
@@ -78,7 +77,12 @@ class MyScanner(Scanner):
                         
                        # WEInsert
                        ([('StScrpHandle', 'hStyles', 'InMode'), ('WESoupHandle', 'hSoup', 'InMode')],
-                [('OptStScrpHandle', 'hStyles', 'InMode'), ('OptSoupHandle', 'hSoup', 'InMode')])
+                [('OptStScrpHandle', 'hStyles', 'InMode'), ('OptSoupHandle', 'hSoup', 'InMode')]),
+                
+               # WEGetObjectOwner
+               ("WEGetObjectOwner",
+                [('WEReference', '*', 'ReturnMode')],
+                [('ExistingWEReference', '*', 'ReturnMode')])
 
                        ]
                        
index 605f083a27b2cd88f26f3a8ea3181eb1a7b5484a..ad18d26e258970b9b084e30cbb2b47ecec86e0d3 100644 (file)
@@ -23,6 +23,7 @@ from macsupport import *
 
 # Create the type objects
 WEReference = OpaqueByValueType("WEReference", "wasteObj")
+ExistingWEReference = OpaqueByValueType("WEReference", "ExistingwasteObj")
 WEObjectReference = OpaqueByValueType("WEObjectReference", "WEOObj")
 StScrpHandle = OpaqueByValueType("StScrpHandle", "ResObj")
 RgnHandle = OpaqueByValueType("RgnHandle", "ResObj")
@@ -49,6 +50,7 @@ LongRect_ptr = LongRect
 
 includestuff = includestuff + """
 #include <%s>""" % MACHEADERFILE + """
+#include <WEObjectHandlers.h>
 
 /* Exported by Qdmodule.c: */
 extern PyObject *QdRGB_New(RGBColor *);
@@ -56,6 +58,7 @@ extern int QdRGB_Convert(PyObject *, RGBColor *);
 
 /* Forward declaration */
 staticforward PyObject *WEOObj_New(WEObjectReference);
+staticforward PyObject *ExistingwasteObj_New(WEReference);
 
 /*
 ** Parse/generate TextStyle records
@@ -120,6 +123,122 @@ LongPt_New(LongPt *p)
 {
        return Py_BuildValue("(ll)", p->h, p->v);
 }
+
+/* Stuff for the callbacks: */
+static PyObject *callbackdict;
+UniversalProcPtr upp_new_handler, upp_dispose_handler, upp_draw_handler, upp_click_handler;
+
+static OSErr
+any_handler(WESelector what, WEObjectReference who, PyObject *args, PyObject **rv)
+{
+       FlavorType tp;
+       PyObject *key, *func;
+       
+       if ( args == NULL ) return errAECorruptData;
+       
+       tp = WEGetObjectType(who);
+       
+       if( (key=Py_BuildValue("O&O&", PyMac_BuildOSType, tp, PyMac_BuildOSType, what)) == NULL)
+               return errAECorruptData;
+       if( (func = PyDict_GetItem(callbackdict, key)) == NULL ) {
+               Py_DECREF(key);
+               return errAEHandlerNotFound;
+       }
+       Py_INCREF(func);
+       *rv = PyEval_CallObject(func, args);
+       Py_DECREF(func);
+       Py_DECREF(key);
+       if ( *rv == NULL ) {
+               fprintf(stderr, "--Exception in callback: ");
+               PyErr_Print();
+               return errAEReplyNotArrived;
+       }
+       return 0;
+}
+
+static pascal OSErr
+my_new_handler(Point *objectSize, WEObjectReference objref)
+{
+       PyObject *args=NULL, *rv=NULL;
+       OSErr err;
+       
+       args=Py_BuildValue("(O&)", WEOObj_New, objref);
+       err = any_handler(weNewHandler, objref, args, &rv);
+       if (!err) {
+               if (!PyMac_GetPoint(rv, objectSize) )
+                       err = errAECoercionFail;
+       }
+       if ( args ) Py_DECREF(args);
+       if ( rv ) Py_DECREF(rv);
+       return err;
+}
+
+static pascal OSErr
+my_dispose_handler(WEObjectReference objref)
+{
+       PyObject *args=NULL, *rv=NULL;
+       OSErr err;
+       
+       args=Py_BuildValue("(O&)", WEOObj_New, objref);
+       err = any_handler(weDisposeHandler, objref, args, &rv);
+       if ( args ) Py_DECREF(args);
+       if ( rv ) Py_DECREF(rv);
+       return err;
+}
+
+static pascal OSErr
+my_draw_handler(Rect *destRect, WEObjectReference objref)
+{
+       PyObject *args=NULL, *rv=NULL;
+       OSErr err;
+       
+       args=Py_BuildValue("O&O&", PyMac_BuildRect, destRect, WEOObj_New, objref);
+       err = any_handler(weDrawHandler, objref, args, &rv);
+       if ( args ) Py_DECREF(args);
+       if ( rv ) Py_DECREF(rv);
+       return err;
+}
+
+static pascal Boolean
+my_click_handler(Point hitPt, EventModifiers modifiers,
+               unsigned long clickTime, WEObjectReference objref)
+{
+       PyObject *args=NULL, *rv=NULL;
+       int retvalue;
+       OSErr err;
+       
+       args=Py_BuildValue("O&llO&", PyMac_BuildPoint, hitPt,
+                       (long)modifiers, (long)clickTime, WEOObj_New, objref);
+       err = any_handler(weClickHandler, objref, args, &rv);
+       if (!err)
+               retvalue = PyInt_AsLong(rv);
+       else
+               retvalue = 0;
+       if ( args ) Py_DECREF(args);
+       if ( rv ) Py_DECREF(rv);
+       return retvalue;
+}
+               
+
+"""
+finalstuff = finalstuff + """
+/* Return the object corresponding to the window, or NULL */
+
+PyObject *
+ExistingwasteObj_New(w)
+       WEReference w;
+{
+       PyObject *it = NULL;
+       
+       if (w == NULL)
+               it = NULL;
+       else
+               WEGetInfo(weRefCon, (void *)&it, w);
+       if (it == NULL || ((wasteObject *)it)->ob_itself != w)
+               it = Py_None;
+       Py_INCREF(it);
+       return it;
+}
 """
 
 class WEMethodGenerator(OSErrMethodGenerator):
@@ -142,6 +261,9 @@ class WEObjectDefinition(GlobalObjectDefinition):
                                        PyErr_SetString(waste_Error,"Cannot create null WE");
                                        return NULL;
                                }""")
+       def outputInitStructMembers(self):
+               GlobalObjectDefinition.outputInitStructMembers(self)
+               Output("WESetInfo(weRefCon, (void *)&it, itself);")
        def outputFreeIt(self, itselfname):
                Output("WEDispose(%s);", itselfname)
                
@@ -150,7 +272,18 @@ class WEOObjectDefinition(GlobalObjectDefinition):
                Output("""if (itself == NULL) {
                                        Py_INCREF(Py_None);
                                        return Py_None;
-                               }""")           
+                               }""")
+                               
+variablestuff = """
+       callbackdict = PyDict_New();
+       if (callbackdict == NULL || PyDict_SetItemString(d, "callbacks", callbackdict) != 0)
+               Py_FatalError("can't initialize Waste.callbackdict");
+       upp_new_handler = NewWENewObjectProc(my_new_handler);
+       upp_dispose_handler = NewWENewObjectProc(my_dispose_handler);
+       upp_draw_handler = NewWENewObjectProc(my_draw_handler);
+       upp_click_handler = NewWENewObjectProc(my_click_handler);
+"""
+
 
 # From here on it's basically all boiler plate...
 
@@ -158,7 +291,7 @@ class WEOObjectDefinition(GlobalObjectDefinition):
 ## execfile(TYPETESTFILE)
 
 # Create the generator groups and link them
-module = MacModule(MODNAME, MODPREFIX, includestuff, finalstuff, initstuff)
+module = MacModule(MODNAME, MODPREFIX, includestuff, finalstuff, initstuff, variablestuff)
 object = WEObjectDefinition(OBJECTNAME, OBJECTPREFIX, OBJECTTYPE)
 object2 = WEOObjectDefinition("WEO", "WEOObj", "WEObjectReference")
 module.addobject(object2)
@@ -175,9 +308,88 @@ methods = []
 methods2 = []
 execfile(INPUTFILE)
 
+# A function written by hand:
+stdhandlers_body = """
+       OSErr err;
+       // install the sample object handlers for pictures and sounds
+#define        kTypePicture                    'PICT'
+#define        kTypeSound                              'snd '
+       
+       if ( !PyArg_ParseTuple(_args, "") ) return NULL;
+       
+       if ((err = WEInstallObjectHandler(kTypePicture, weNewHandler,
+                               (UniversalProcPtr) NewWENewObjectProc(HandleNewPicture), NULL)) != noErr)
+               goto cleanup;
+       
+       if ((err = WEInstallObjectHandler(kTypePicture, weDisposeHandler,
+                               (UniversalProcPtr) NewWEDisposeObjectProc(HandleDisposePicture), NULL)) != noErr)
+               goto cleanup;
+       
+       if ((err = WEInstallObjectHandler(kTypePicture, weDrawHandler,
+                               (UniversalProcPtr) NewWEDrawObjectProc(HandleDrawPicture), NULL)) != noErr)
+               goto cleanup;
+       
+       if ((err = WEInstallObjectHandler(kTypeSound, weNewHandler,
+                               (UniversalProcPtr) NewWENewObjectProc(HandleNewSound), NULL)) != noErr)
+               goto cleanup;
+       
+       if ((err = WEInstallObjectHandler(kTypeSound, weDrawHandler,
+                               (UniversalProcPtr) NewWEDrawObjectProc(HandleDrawSound), NULL)) != noErr)
+               goto cleanup;
+       
+       if ((err = WEInstallObjectHandler(kTypeSound, weClickHandler,
+                               (UniversalProcPtr) NewWEClickObjectProc(HandleClickSound), NULL)) != noErr)
+               goto cleanup;
+       Py_INCREF(Py_None);
+       return Py_None;
+       
+cleanup:
+       return PyMac_Error(err);
+"""
+
+inshandler_body = """
+       OSErr err;
+       FlavorType objectType;
+       WESelector selector;
+       PyObject *py_handler;
+       UniversalProcPtr handler;
+       WEReference we = NULL;
+       PyObject *key;
+       
+       
+       if ( !PyArg_ParseTuple(_args, "O&O&O|O&",
+                       PyMac_GetOSType, &objectType,
+                       PyMac_GetOSType, &selector,
+                       &py_handler,
+                       ExistingwasteObj_New, &we) ) return NULL;
+                       
+       if ( selector == weNewHandler ) handler = upp_new_handler;
+       else if ( selector == weDisposeHandler ) handler = upp_dispose_handler;
+       else if ( selector == weDrawHandler ) handler = upp_draw_handler;
+       else if ( selector == weClickHandler ) handler = upp_click_handler;
+       else return PyMac_Error(weUndefinedSelectorErr);
+                       
+       if ((key = Py_BuildValue("O&O&", 
+                       PyMac_BuildOSType, objectType, 
+                       PyMac_BuildOSType, selector)) == NULL )
+               return NULL;
+               
+       PyDict_SetItem(callbackdict, key, py_handler);
+       
+       err = WEInstallObjectHandler(objectType, selector, handler, we);
+       if ( err ) return PyMac_Error(err);
+       Py_INCREF(Py_None);
+       return Py_None;
+"""
+
+stdhand = ManualGenerator("STDObjectHandlers", stdhandlers_body)
+inshand = ManualGenerator("WEInstallObjectHandler", inshandler_body)
+
 # add the populated lists to the generator groups
 # (in a different wordl the scan program would generate this)
 for f in functions: module.add(f)
+module.add(stdhand)
+module.add(inshand)
 for f in methods: object.add(f)
 for f in methods2: object2.add(f)