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Diffstat (limited to 'libpyside/pysidesignal.cpp')
-rw-r--r-- | libpyside/pysidesignal.cpp | 816 |
1 files changed, 816 insertions, 0 deletions
diff --git a/libpyside/pysidesignal.cpp b/libpyside/pysidesignal.cpp new file mode 100644 index 000000000..41750aa37 --- /dev/null +++ b/libpyside/pysidesignal.cpp @@ -0,0 +1,816 @@ +/* + * This file is part of the PySide project. + * + * Copyright (C) 2009-2010 Nokia Corporation and/or its subsidiary(-ies). + * + * Contact: PySide team <contact@pyside.org> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include <Python.h> +#include "pysidesignal.h" +#include "pysidesignal_p.h" +#include "signalmanager.h" + +#include <shiboken.h> +#include <QDebug> + +#define SIGNAL_CLASS_NAME "Signal" +#define QT_SIGNAL_SENTINEL '2' + + +namespace PySide { namespace Signal { + //aux + static char* buildSignature(const char*, const char*); + static void appendSignature(PySideSignal*, char*); + static void instanceInitialize(PySideSignalInstance*, PyObject*, PySideSignal*, PyObject *, int); + static char* parseSignature(PyObject*); + static PyObject* buildQtCompatible(const char*); +} +} + +extern "C" +{ + +//Signal methods +static int signalTpInit(PyObject*, PyObject*, PyObject*); +static void signalFree(void*); +static void signalInstanceFree(void*); +static PyObject* signalGetItem(PyObject* self, PyObject* key); +static PyObject* signalToString(PyObject* self); + +//Signal Instance methods +static PyObject* signalInstanceConnect(PyObject*, PyObject*, PyObject*); +static PyObject* signalInstanceDisconnect(PyObject*, PyObject*); +static PyObject* signalInstanceEmit(PyObject*, PyObject*); +static PyObject* signalInstanceGetItem(PyObject*, PyObject*); + +static PyObject* signalInstanceCall(PyObject* self, PyObject* args, PyObject* kw); +static PyObject* signalCall(PyObject*, PyObject*, PyObject*); + +static PyMappingMethods Signal_as_mapping = { + 0, + signalGetItem, + 0 +}; + + +PyTypeObject PySideSignalType = { + PyObject_HEAD_INIT(0) + /*ob_size*/ 0, + /*tp_name*/ "PySide.QtCore."SIGNAL_CLASS_NAME, + /*tp_basicsize*/ sizeof(PySideSignal), + /*tp_itemsize*/ 0, + /*tp_dealloc*/ 0, + /*tp_print*/ 0, + /*tp_getattr*/ 0, + /*tp_setattr*/ 0, + /*tp_compare*/ 0, + /*tp_repr*/ 0, + /*tp_as_number*/ 0, + /*tp_as_sequence*/ 0, + /*tp_as_mapping*/ &Signal_as_mapping, + /*tp_hash*/ 0, + /*tp_call*/ signalCall, + /*tp_str*/ signalToString, + /*tp_getattro*/ 0, + /*tp_setattro*/ 0, + /*tp_as_buffer*/ 0, + /*tp_flags*/ Py_TPFLAGS_DEFAULT, + /*tp_doc*/ SIGNAL_CLASS_NAME, + /*tp_traverse*/ 0, + /*tp_clear*/ 0, + /*tp_richcompare*/ 0, + /*tp_weaklistoffset*/ 0, + /*tp_iter*/ 0, + /*tp_iternext*/ 0, + /*tp_methods*/ 0, + /*tp_members*/ 0, + /*tp_getset*/ 0, + /*tp_base*/ 0, + /*tp_dict*/ 0, + /*tp_descr_get*/ 0, + /*tp_descr_set*/ 0, + /*tp_dictoffset*/ 0, + /*tp_init*/ signalTpInit, + /*tp_alloc*/ 0, + /*tp_new*/ PyType_GenericNew, + /*tp_free*/ signalFree, + /*tp_is_gc*/ 0, + /*tp_bases*/ 0, + /*tp_mro*/ 0, + /*tp_cache*/ 0, + /*tp_subclasses*/ 0, + /*tp_weaklist*/ 0, + /*tp_del*/ 0, +}; + +static PyMethodDef SignalInstance_methods[] = { + {"connect", (PyCFunction)signalInstanceConnect, METH_VARARGS|METH_KEYWORDS, 0}, + {"disconnect", signalInstanceDisconnect, METH_VARARGS, 0}, + {"emit", signalInstanceEmit, METH_VARARGS, 0}, + {0} /* Sentinel */ +}; + +static PyMappingMethods SignalInstance_as_mapping = { + 0, + signalInstanceGetItem, + 0 +}; + +PyTypeObject PySideSignalInstanceType = { + PyObject_HEAD_INIT(0) + /*ob_size*/ 0, + /*tp_name*/ "PySide.QtCore."SIGNAL_CLASS_NAME, + /*tp_basicsize*/ sizeof(PySideSignalInstance), + /*tp_itemsize*/ 0, + /*tp_dealloc*/ 0, + /*tp_print*/ 0, + /*tp_getattr*/ 0, + /*tp_setattr*/ 0, + /*tp_compare*/ 0, + /*tp_repr*/ 0, + /*tp_as_number*/ 0, + /*tp_as_sequence*/ 0, + /*tp_as_mapping*/ &SignalInstance_as_mapping, + /*tp_hash*/ 0, + /*tp_call*/ signalInstanceCall, + /*tp_str*/ 0, + /*tp_getattro*/ 0, + /*tp_setattro*/ 0, + /*tp_as_buffer*/ 0, + /*tp_flags*/ Py_TPFLAGS_DEFAULT, + /*tp_doc*/ SIGNAL_CLASS_NAME, + /*tp_traverse*/ 0, + /*tp_clear*/ 0, + /*tp_richcompare*/ 0, + /*tp_weaklistoffset*/ 0, + /*tp_iter*/ 0, + /*tp_iternext*/ 0, + /*tp_methods*/ SignalInstance_methods, + /*tp_members*/ 0, + /*tp_getset*/ 0, + /*tp_base*/ 0, + /*tp_dict*/ 0, + /*tp_descr_get*/ 0, + /*tp_descr_set*/ 0, + /*tp_dictoffset*/ 0, + /*tp_init*/ 0, + /*tp_alloc*/ 0, + /*tp_new*/ PyType_GenericNew, + /*tp_free*/ signalInstanceFree, + /*tp_is_gc*/ 0, + /*tp_bases*/ 0, + /*tp_mro*/ 0, + /*tp_cache*/ 0, + /*tp_subclasses*/ 0, + /*tp_weaklist*/ 0, + /*tp_del*/ 0, +}; + +int signalTpInit(PyObject* self, PyObject* args, PyObject* kwds) +{ + static PyObject *emptyTuple = 0; + static const char *kwlist[] = {"name", 0}; + char* argName = 0; + + if (emptyTuple == 0) + emptyTuple = PyTuple_New(0); + + if (!PyArg_ParseTupleAndKeywords(emptyTuple, kwds, + "|s:QtCore."SIGNAL_CLASS_NAME, (char**) kwlist, &argName)) + return 0; + + bool tupledArgs = false; + PySideSignal *data = reinterpret_cast<PySideSignal*>(self); + if (argName) { + data->signalName = strdup(argName); + } + + for(Py_ssize_t i = 0, i_max = PyTuple_Size(args); i < i_max; i++) { + PyObject *arg = PyTuple_GET_ITEM(args, i); + if (PySequence_Check(arg) && !PyString_Check(arg)) { + tupledArgs = true; + PySide::Signal::appendSignature(data, PySide::Signal::parseSignature(arg)); + } + } + + if (!tupledArgs) + PySide::Signal::appendSignature(data, PySide::Signal::parseSignature(args)); + + return 1; +} + +void signalFree(void *self) +{ + PyObject *pySelf = reinterpret_cast<PyObject*>(self); + PySideSignal *data = reinterpret_cast<PySideSignal*>(self); + + for(int i = 0, i_max = data->signaturesSize; i < i_max; i++) { + if (data->signatures[i]) + free(data->signatures[i]); + } + + free(data->signatures); + free(data->signalName); + data->initialized = 0; + data->signaturesSize = 0; + Py_XDECREF(data->homonymousMethod); + data->homonymousMethod = 0; + + pySelf->ob_type->tp_base->tp_free(self); +} + +PyObject* signalGetItem(PyObject* self, PyObject* key) +{ + PySideSignal* data = reinterpret_cast<PySideSignal*>(self); + char* sigKey; + if (key) { + sigKey = PySide::Signal::parseSignature(key); + } else { + if (data->signatures[0]) + sigKey = strdup(data->signatures[0]); + else + sigKey = strdup("void"); + } + char* sig = PySide::Signal::buildSignature(data->signalName, sigKey); + free(sigKey); + PyObject* pySignature = PyString_FromString(sig); + free(sig); + return pySignature; +} + + +PyObject* signalToString(PyObject* self) +{ + return signalGetItem(self, 0); +} + +void signalInstanceFree(void* self) +{ + PyObject* pySelf = reinterpret_cast<PyObject*>(self); + PySideSignalInstance* data = reinterpret_cast<PySideSignalInstance*>(self); + + PySideSignalInstancePrivate* dataPvt = data->d; + free(dataPvt->signalName); + free(dataPvt->signature); + + Py_XDECREF(dataPvt->homonymousMethod); + + if (dataPvt->next) { + Py_DECREF(dataPvt->next); + dataPvt->next = 0; + } + delete dataPvt; + data->d = 0; + pySelf->ob_type->tp_base->tp_free(self); +} + +PyObject* signalInstanceConnect(PyObject* self, PyObject* args, PyObject* kwds) +{ + PyObject *slot = 0; + PyObject *type = 0; + static const char *kwlist[] = {"slot", "type", 0}; + + if (!PyArg_ParseTupleAndKeywords(args, kwds, + "O|O:"SIGNAL_CLASS_NAME, (char**) kwlist, &slot, &type)) + return 0; + + PySideSignalInstance *source = reinterpret_cast<PySideSignalInstance*>(self); + Shiboken::AutoDecRef pyArgs(PyList_New(0)); + + bool match = false; + if (slot->ob_type == &PySideSignalInstanceType) { + PySideSignalInstance *sourceWalk = source; + PySideSignalInstance *targetWalk; + + //find best match + while(sourceWalk && !match) { + targetWalk = reinterpret_cast<PySideSignalInstance*>(slot); + while(targetWalk && !match) { + if (QMetaObject::checkConnectArgs(sourceWalk->d->signature, targetWalk->d->signature)) { + PyList_Append(pyArgs, sourceWalk->d->source); + Shiboken::AutoDecRef sourceSignature(PySide::Signal::buildQtCompatible(sourceWalk->d->signature)); + PyList_Append(pyArgs, sourceSignature); + + PyList_Append(pyArgs, targetWalk->d->source); + Shiboken::AutoDecRef targetSignature(PySide::Signal::buildQtCompatible(targetWalk->d->signature)); + PyList_Append(pyArgs, targetSignature); + + match = true; + } + targetWalk = reinterpret_cast<PySideSignalInstance*>(targetWalk->d->next); + } + sourceWalk = reinterpret_cast<PySideSignalInstance*>(sourceWalk->d->next); + } + } else { + //try the first signature + PyList_Append(pyArgs, source->d->source); + Shiboken::AutoDecRef signature(PySide::Signal::buildQtCompatible(source->d->signature)); + PyList_Append(pyArgs, signature); + + PyList_Append(pyArgs, slot); + match = true; + } + + if (type) + PyList_Append(pyArgs, type); + + if (match) { + Shiboken::AutoDecRef tupleArgs(PyList_AsTuple(pyArgs)); + Shiboken::AutoDecRef pyMethod(PyObject_GetAttrString(source->d->source, "connect")); + return PyObject_CallObject(pyMethod, tupleArgs); + } + + return 0; +} + +PyObject* signalInstanceEmit(PyObject* self, PyObject* args) +{ + PySideSignalInstance *source = reinterpret_cast<PySideSignalInstance*>(self); + + Shiboken::AutoDecRef pyArgs(PyList_New(0)); + Shiboken::AutoDecRef sourceSignature(PySide::Signal::buildQtCompatible(source->d->signature)); + + PyList_Append(pyArgs, sourceSignature); + for(Py_ssize_t i = 0, max = PyTuple_Size(args); i < max; i++) + PyList_Append(pyArgs, PyTuple_GetItem(args, i)); + + Shiboken::AutoDecRef pyMethod(PyObject_GetAttrString(source->d->source, "emit")); + + Shiboken::AutoDecRef tupleArgs(PyList_AsTuple(pyArgs)); + return PyObject_CallObject(pyMethod, tupleArgs); +} + +PyObject* signalInstanceGetItem(PyObject* self, PyObject* key) +{ + PySideSignalInstance* data = reinterpret_cast<PySideSignalInstance*>(self); + char* sigKey = PySide::Signal::parseSignature(key); + char* sig = PySide::Signal::buildSignature(data->d->signalName, sigKey); + free(sigKey); + const char* sigName = data->d->signalName; + + while(data) { + if (strcmp(data->d->signature, sig) == 0) { + free(sig); + PyObject *result = reinterpret_cast<PyObject*>(data); + Py_INCREF(result); + return result; + } + data = reinterpret_cast<PySideSignalInstance*>(data->d->next); + } + PyErr_Format(PyExc_IndexError, "Signature %s not found for signal: %s", sig, sigName); + free(sig); + + return 0; +} + +PyObject* signalInstanceDisconnect(PyObject* self, PyObject* args) +{ + PySideSignalInstance *source = reinterpret_cast<PySideSignalInstance*>(self); + Shiboken::AutoDecRef pyArgs(PyList_New(0)); + + PyObject *slot; + if PyTuple_Check(args) + slot = PyTuple_GET_ITEM(args, 0); + else + slot = args; + + bool match = false; + if (slot->ob_type == &PySideSignalInstanceType) { + PySideSignalInstance *target = reinterpret_cast<PySideSignalInstance*>(slot); + if (QMetaObject::checkConnectArgs(source->d->signature, target->d->signature)) { + PyList_Append(pyArgs, source->d->source); + Shiboken::AutoDecRef source_signature(PySide::Signal::buildQtCompatible(source->d->signature)); + PyList_Append(pyArgs, source_signature); + + PyList_Append(pyArgs, target->d->source); + Shiboken::AutoDecRef target_signature(PySide::Signal::buildQtCompatible(target->d->signature)); + PyList_Append(pyArgs, target_signature); + match = true; + } + } else { + //try the first signature + PyList_Append(pyArgs, source->d->source); + Shiboken::AutoDecRef signature(PySide::Signal::buildQtCompatible(source->d->signature)); + PyList_Append(pyArgs, signature); + + PyList_Append(pyArgs, slot); + match = true; + } + + if (match) { + Shiboken::AutoDecRef tupleArgs(PyList_AsTuple(pyArgs)); + Shiboken::AutoDecRef pyMethod(PyObject_GetAttrString(source->d->source, "disconnect")); + return PyObject_CallObject(pyMethod, tupleArgs); + } + + return 0; +} + +PyObject* signalCall(PyObject* self, PyObject* args, PyObject* kw) +{ + PySideSignal* signal = reinterpret_cast<PySideSignal*>(self); + + if (!signal->homonymousMethod) { + PyErr_SetString(PyExc_TypeError, "native Qt signal is not callable"); + return 0; + } + + descrgetfunc getDescriptor = signal->homonymousMethod->ob_type->tp_descr_get; + Shiboken::AutoDecRef homonymousMethod(getDescriptor(signal->homonymousMethod, 0, 0)); + + if (PyCFunction_GET_FLAGS(homonymousMethod.object()) & METH_STATIC) + return PyCFunction_Call(homonymousMethod, args, kw); + + ternaryfunc callFunc = signal->homonymousMethod->ob_type->tp_call; + return callFunc(homonymousMethod, args, kw); +} + +PyObject* signalInstanceCall(PyObject* self, PyObject* args, PyObject* kw) +{ + PySideSignalInstance* PySideSignal = reinterpret_cast<PySideSignalInstance*>(self); + if (!PySideSignal->d->homonymousMethod) { + PyErr_SetString(PyExc_TypeError, "native Qt signal is not callable"); + return 0; + } + + descrgetfunc getDescriptor = PySideSignal->d->homonymousMethod->ob_type->tp_descr_get; + Shiboken::AutoDecRef homonymousMethod(getDescriptor(PySideSignal->d->homonymousMethod, PySideSignal->d->source, 0)); + return PyCFunction_Call(homonymousMethod, args, kw); +} + +} // extern "C" + +namespace PySide { namespace Signal { + +void init(PyObject* module) +{ + if (PyType_Ready(&PySideSignalType) < 0) + return; + + Py_INCREF(&PySideSignalType); + PyModule_AddObject(module, SIGNAL_CLASS_NAME, ((PyObject*)&PySideSignalType)); + + if (PyType_Ready(&PySideSignalInstanceType) < 0) + return; + + Py_INCREF(&PySideSignalInstanceType); +} + +void updateSourceObject(PyObject* source) +{ + PyTypeObject * objType = reinterpret_cast<PyTypeObject *>(PyObject_Type(source)); + + Py_ssize_t pos = 0; + PyObject* value; + PyObject* key; + + while (PyDict_Next(objType->tp_dict, &pos, &key, &value)) { + if (PyObject_TypeCheck(value, &PySideSignalType)) { + Shiboken::AutoDecRef signalInstance((PyObject*)PyObject_New(PySideSignalInstance, &PySideSignalInstanceType)); + instanceInitialize(signalInstance.cast<PySideSignalInstance*>(), key, reinterpret_cast<PySideSignal*>(value), source, 0); + PyObject_SetAttr(source, key, signalInstance); + } + } + + Py_XDECREF(objType); +} + +char* getTypeName(PyObject* type) +{ + if (PyType_Check(type)) { + char *typeName = NULL; + if (type->ob_type == &Shiboken::SbkBaseWrapperType_Type) { + Shiboken::SbkBaseWrapperType *objType = reinterpret_cast<Shiboken::SbkBaseWrapperType*>(type); + Q_ASSERT(objType->original_name); + typeName = strdup(objType->original_name); + } else { + // Translate python types to Qt names + PyTypeObject *objType = reinterpret_cast<PyTypeObject*>(type); + if ((objType == &PyString_Type) || (objType == &PyUnicode_Type)) + typeName = strdup("QString"); + else if (objType == &PyInt_Type) + typeName = strdup("int"); + else if (objType == &PyLong_Type) + typeName = strdup("long"); + else if (objType == &PyFloat_Type) + typeName = strdup("qreal"); + else if (objType == &PyBool_Type) + typeName = strdup("bool"); + else + typeName = strdup("PyObject"); + } + return typeName; + } else if (PyString_Check(type)) { + return strdup(PyString_AS_STRING(type)); + } else if (type == Py_None) { + return strdup("void"); + } + return 0; +} + +char* buildSignature(const char *name, const char *signature) +{ + QString signal; + signal.sprintf("%s(%s)", name, signature); + return strdup(QMetaObject::normalizedSignature(signal.toAscii())); +} + +char* parseSignature(PyObject *args) +{ + char *signature = 0; + if (args && (PyString_Check(args) || !PySequence_Check(args))) + return getTypeName(args); + + for(Py_ssize_t i = 0, i_max = PySequence_Size(args); i < i_max; i++) { + Shiboken::AutoDecRef arg(PySequence_ITEM(args, i)); + char* typeName = getTypeName(arg); + if (typeName) { + if (signature) { + signature = reinterpret_cast<char*>(realloc(signature, (strlen(signature) + 1 + strlen(typeName)) * sizeof(char*))); + signature = strcat(signature, ","); + signature = strcat(signature, typeName); + free(typeName); + } else { + signature = typeName; + } + } + } + return signature; +} + +void appendSignature(PySideSignal* self, char* signature) +{ + self->signaturesSize++; + + if (self->signaturesSize > 1) { + self->signatures = (char**) realloc(self->signatures, sizeof(char**) * self->signaturesSize); + } else { + self->signatures = (char**) malloc(sizeof(char**)); + } + self->signatures[self->signaturesSize-1] = signature; +} + +PySideSignalInstance* initialize(PySideSignal* self, PyObject* name, PyObject *object) +{ + PySideSignalInstance* instance = PyObject_New(PySideSignalInstance, &PySideSignalInstanceType); + instanceInitialize(instance, name, self, object, 0); + return instance; +} + +void instanceInitialize(PySideSignalInstance* self, PyObject* name, PySideSignal* data, PyObject* source, int index) +{ + self->d = new PySideSignalInstancePrivate; + PySideSignalInstancePrivate* selfPvt = self->d; + selfPvt->next = 0; + if (data->signalName) + selfPvt->signalName = strdup(data->signalName); + else { + selfPvt->signalName = strdup(PyString_AsString(name)); + data->signalName = strdup(selfPvt->signalName); + } + + selfPvt->source = source; + selfPvt->signature = buildSignature(self->d->signalName, data->signatures[index]); + selfPvt->homonymousMethod = 0; + if (data->homonymousMethod) { + selfPvt->homonymousMethod = data->homonymousMethod; + Py_INCREF(selfPvt->homonymousMethod); + } + index++; + + if (index < data->signaturesSize) { + selfPvt->next = PyObject_New(PySideSignalInstance, &PySideSignalInstanceType); + instanceInitialize(selfPvt->next, name, data, source, index); + } +} + +bool connect(PyObject* source, const char* signal, PyObject* callback) +{ + Shiboken::AutoDecRef pyMethod(PyObject_GetAttrString(source, "connect")); + if (pyMethod.isNull()) + return false; + + Shiboken::AutoDecRef pySignature(PyString_FromString(signal)); + Shiboken::AutoDecRef pyArgs(PyTuple_Pack(3, source, pySignature.object(), callback)); + return PyObject_CallObject(pyMethod, pyArgs); +} + +PySideSignalInstance* newObjectFromMethod(PyObject* source, const QList<QMetaMethod>& methodList) +{ + PySideSignalInstance *root = 0; + PySideSignalInstance *previous = 0; + foreach(QMetaMethod m, methodList) { + PySideSignalInstance *item = PyObject_New(PySideSignalInstance, &PySideSignalInstanceType); + if (!root) + root = item; + + if (previous) + previous->d->next = item; + + item->d = new PySideSignalInstancePrivate; + PySideSignalInstancePrivate* selfPvt = item->d; + selfPvt->source = source; + QByteArray cppName(m.signature()); + cppName = cppName.mid(0, cppName.indexOf('(')); + // separe SignalName + selfPvt->signalName = strdup(cppName.data()); + selfPvt->signature = strdup(m.signature()); + selfPvt->homonymousMethod = 0; + selfPvt->next = 0; + } + return root; +} + +PySideSignal* newObject(const char* name, ...) +{ + va_list listSignatures; + char* sig = 0; + PySideSignal* self = PyObject_New(PySideSignal, &PySideSignalType); + self->signalName = strdup(name); + self->signaturesSize = 0; + self->signatures = 0; + self->initialized = 0; + self->homonymousMethod = 0; + + va_start(listSignatures, name); + sig = va_arg(listSignatures, char*); + + while(sig != NULL) { + appendSignature(self, strdup(sig)); + sig = va_arg(listSignatures, char*); + } + + va_end(listSignatures); + + return self; +} + + +PyObject* buildQtCompatible(const char* signature) +{ + char* qtSignature; + qtSignature = reinterpret_cast<char*>(malloc(strlen(signature)+2)); + sprintf(qtSignature, "%c%s", QT_SIGNAL_SENTINEL, signature); + PyObject* ret = PyString_FromString(qtSignature); + free(qtSignature); + return ret; +} + +void addSignalToWrapper(Shiboken::SbkBaseWrapperType* wrapperType, const char* signalName, PySideSignal* signal) +{ + PyObject* typeDict = wrapperType->super.ht_type.tp_dict; + PyObject* homonymousMethod; + if ((homonymousMethod = PyDict_GetItemString(typeDict, signalName))) { + Py_INCREF(homonymousMethod); + signal->homonymousMethod = homonymousMethod; + } + PyDict_SetItemString(typeDict, signalName, reinterpret_cast<PyObject*>(signal)); +} + +PyObject* getObject(PySideSignalInstance* signal) +{ + return signal->d->source; +} + +const char* getSignature(PySideSignalInstance* signal) +{ + return signal->d->signature; +} + + +const char** getSignatures(PyObject* signal, int *size) +{ + PySideSignal *self = reinterpret_cast<PySideSignal*>(signal); + *size = self->signaturesSize; + return (const char**) self->signatures; +} + +QStringList getArgsFromSignature(const char* signature, bool* isShortCircuit) +{ + QString qsignature(signature); + QStringList result; + QRegExp splitRegex("\\s*,\\s*"); + + if (isShortCircuit) + *isShortCircuit = !qsignature.contains('('); + if (qsignature.contains("()") || qsignature.contains("(void)")) { + return result; + } else if (qsignature.contains('(')) { + static QRegExp regex(".+\\((.*)\\)"); + //get args types + QString types = qsignature.replace(regex, "\\1"); + result = types.split(splitRegex); + } + return result; +} + +QString getCallbackSignature(const char* signal, QObject* receiver, PyObject* callback, bool encodeName) +{ + QString functionName; + QString signature; + QStringList args; + int numArgs = -1; + bool useSelf = false; + bool isMethod = PyMethod_Check(callback); + bool isFunction = PyFunction_Check(callback); + + if (isMethod || isFunction) { + PyObject* function = isMethod ? PyMethod_GET_FUNCTION(callback) : callback; + PyCodeObject* objCode = reinterpret_cast<PyCodeObject*>(PyFunction_GET_CODE(function)); + functionName = PyString_AS_STRING(objCode->co_name); + useSelf = isMethod; + numArgs = objCode->co_flags & CO_VARARGS ? -1 : objCode->co_argcount; + } else if (PyCFunction_Check(callback)) { + functionName = ((PyCFunctionObject*)callback)->m_ml->ml_name; + useSelf = ((PyCFunctionObject*)callback)->m_self; + int flags = ((PyCFunctionObject*)callback)->m_ml->ml_flags; + + if (receiver) { + //Search for signature on metaobject + const QMetaObject *mo = receiver->metaObject(); + for(int i=0; i < mo->methodCount(); i++) { + QMetaMethod me = mo->method(i); + if (QString(me.signature()).startsWith(functionName)) { + numArgs = me.parameterTypes().size()+1; + break; + } + } + } + + if (numArgs == -1) { + if (flags & METH_O) + numArgs = 1; + else if (flags & METH_VARARGS) + numArgs = -1; + else if (flags & METH_NOARGS) + numArgs = 0; + } + } else if (PyCallable_Check(callback)) { + functionName = "__callback"+QString::number((size_t)callback); + } + + Q_ASSERT(!functionName.isEmpty()); + + bool isShortCircuit = false; + + if (encodeName) + signature = codeCallbackName(callback, functionName); + else + signature = functionName; + + args = getArgsFromSignature(signal, &isShortCircuit); + + if (!isShortCircuit) { + signature.append('('); + if (numArgs == -1) + numArgs = std::numeric_limits<int>::max(); + while (args.count() && args.count() > numArgs - useSelf) { + args.removeLast(); + } + signature.append(args.join(",")); + signature.append(')'); + } + return signature; +} + +bool isQtSignal(const char* signal) +{ + return (signal && signal[0] == QT_SIGNAL_SENTINEL); +} + +bool checkQtSignal(const char* signal) +{ + if (!isQtSignal(signal)) { + PyErr_SetString(PyExc_TypeError, "Use the function PySide.QtCore.SIGNAL on signals"); + return false; + } + return true; +} + +QString codeCallbackName(PyObject* callback, const QString& funcName) +{ + if (PyMethod_Check(callback)) { + PyObject *self = PyMethod_GET_SELF(callback); + PyObject *func = PyMethod_GET_FUNCTION(callback); + return funcName + QString::number(quint64(self), 16) + QString::number(quint64(func), 16); + } else + return funcName + QString::number(quint64(callback), 16); +} + +} //namespace Signal +} //namespace PySide + |