// Return the QMetaObject for an enum type's scope.
static const QMetaObject *get_scope_qmetaobject(const Chimera *ct)
{
// Check it is an enum.
if (!ct->isEnum())
return 0;
// Check it has a scope.
const sipTypeDef *td = sipTypeScope(ct->typeDef());
if (!td)
return 0;
// Check the scope is wrapped by PyQt.
if (!qpycore_is_pyqt4_class(td))
return 0;
return get_qmetaobject((pyqtWrapperType *)sipTypeAsPyTypeObject(td));
}
// Create a dynamic meta-object for a Python type by introspecting its
// attributes. Note that it leaks if the type is deleted.
static int create_dynamic_metaobject(pyqtWrapperType *pyqt_wt)
{
PyTypeObject *pytype = (PyTypeObject *)pyqt_wt;
qpycore_metaobject *qo = new qpycore_metaobject;
#if QT_VERSION >= 0x050000
QMetaObjectBuilder builder;
#endif
// Get any class info.
QList<ClassInfo> class_info_list = qpycore_get_class_info_list();
// Get the super-type's meta-object.
#if QT_VERSION >= 0x050000
builder.setSuperClass(get_qmetaobject((pyqtWrapperType *)pytype->tp_base));
#else
qo->mo.d.superdata = get_qmetaobject((pyqtWrapperType *)pytype->tp_base);
#endif
// Get the name of the type. Dynamic types have simple names.
#if QT_VERSION >= 0x050000
builder.setClassName(pytype->tp_name);
#else
qo->str_data = pytype->tp_name;
qo->str_data.append('\0');
#endif
// Go through the class dictionary getting all PyQt properties, slots,
// signals or a (deprecated) sequence of signals.
typedef QPair<PyObject *, PyObject *> prop_data;
QMap<uint, prop_data> pprops;
QList<QByteArray> psigs;
SIP_SSIZE_T pos = 0;
PyObject *key, *value;
#if QT_VERSION < 0x050000
bool has_notify_signal = false;
QList<const QMetaObject *> enum_scopes;
#endif
while (PyDict_Next(pytype->tp_dict, &pos, &key, &value))
{
// See if it is a slot, ie. it has been decorated with pyqtSlot().
PyObject *sig_obj = PyObject_GetAttr(value,
qpycore_signature_attr_name);
if (sig_obj)
{
// Make sure it is a list and not some legitimate attribute that
// happens to use our special name.
if (PyList_Check(sig_obj))
{
for (SIP_SSIZE_T i = 0; i < PyList_GET_SIZE(sig_obj); ++i)
{
qpycore_slot slot;
// Set up the skeleton slot.
PyObject *decoration = PyList_GET_ITEM(sig_obj, i);
slot.signature = Chimera::Signature::fromPyObject(decoration);
slot.sip_slot.pyobj = 0;
slot.sip_slot.name = 0;
slot.sip_slot.meth.mfunc = value;
slot.sip_slot.meth.mself = 0;
#if PY_MAJOR_VERSION < 3
slot.sip_slot.meth.mclass = (PyObject *)pyqt_wt;
#endif
slot.sip_slot.weakSlot = 0;
qo->pslots.append(slot);
}
}
Py_DECREF(sig_obj);
}
else
{
PyErr_Clear();
// Make sure the key is an ASCII string. Delay the error checking
// until we know we actually need it.
const char *ascii_key = sipString_AsASCIIString(&key);
// See if the value is of interest.
if (PyType_IsSubtype(Py_TYPE(value), &qpycore_pyqtProperty_Type))
{
// It is a property.
if (!ascii_key)
return -1;
Py_INCREF(value);
qpycore_pyqtProperty *pp = (qpycore_pyqtProperty *)value;
pprops.insert(pp->pyqtprop_sequence, prop_data(key, value));
// See if the property has a scope. If so, collect all
// QMetaObject pointers that are not in the super-class
// hierarchy.
const QMetaObject *mo = get_scope_qmetaobject(pp->pyqtprop_parsed_type);
#if QT_VERSION >= 0x050000
if (mo)
builder.addRelatedMetaObject(mo);
#else
if (mo && !enum_scopes.contains(mo))
enum_scopes.append(mo);
#endif
#if QT_VERSION < 0x050000
// See if the property has a notify signal so that we can
// allocate space for it in the meta-object. We will check if
// it is valid later on. If there is one property with a
// notify signal then a signal index is stored for all
// properties.
if (pp->pyqtprop_notify)
has_notify_signal = true;
#endif
}
else if (PyType_IsSubtype(Py_TYPE(value), &qpycore_pyqtSignal_Type))
{
// It is a signal.
if (!ascii_key)
return -1;
qpycore_pyqtSignal *ps = (qpycore_pyqtSignal *)value;
// Make sure the signal has a name.
qpycore_set_signal_name(ps, pytype->tp_name, ascii_key);
// Add all the overloads.
do
{
psigs.append(ps->signature->signature);
ps = ps->next;
}
while (ps);
Py_DECREF(key);
}
else if (ascii_key && qstrcmp(ascii_key, "__pyqtSignals__") == 0)
{
// It is a sequence of signal signatures. This is deprecated
// in favour of pyqtSignal().
if (PySequence_Check(value))
{
SIP_SSIZE_T seq_sz = PySequence_Size(value);
for (SIP_SSIZE_T i = 0; i < seq_sz; ++i)
{
PyObject *itm = PySequence_ITEM(value, i);
if (!itm)
{
Py_DECREF(key);
return -1;
}
PyObject *ascii_itm = itm;
const char *ascii = sipString_AsASCIIString(&ascii_itm);
Py_DECREF(itm);
if (!ascii)
{
Py_DECREF(key);
return -1;
}
QByteArray old_sig = QMetaObject::normalizedSignature(ascii);
old_sig.prepend('2');
psigs.append(old_sig);
Py_DECREF(ascii_itm);
}
}
Py_DECREF(key);
}
else
{
PyErr_Clear();
}
}
}
qo->nr_signals = psigs.count();
#if QT_VERSION < 0x050000
// Create and fill the extradata array.
if (enum_scopes.isEmpty())
{
qo->mo.d.extradata = 0;
}
else
{
const QMetaObject **objects = new const QMetaObject *[enum_scopes.size() + 1];
for (int i = 0; i < enum_scopes.size(); ++i)
objects[i] = enum_scopes.at(i);
objects[enum_scopes.size()] = 0;
#if QT_VERSION >= 0x040600
qo->ed.objects = objects;
qo->ed.static_metacall = 0;
qo->mo.d.extradata = &qo->ed;
#else
qo->mo.d.extradata = objects;
#endif
}
#endif
// Initialise the header section of the data table. Note that Qt v4.5
// introduced revision 2 which added constructors. However the design is
// broken in that the static meta-call function doesn't provide enough
// information to determine which Python sub-class of a Qt class is to be
// created. So we stick with revision 1 (and don't allow pyqtSlot() to
// decorate __init__).
#if QT_VERSION < 0x050000
#if QT_VERSION >= 0x040600
const int revision = 4;
const int header_size = 14;
#else
const int revision = 1;
const int header_size = 10;
#endif
int data_len = header_size + class_info_list.count() * 2 +
qo->nr_signals * 5 + qo->pslots.count() * 5 +
pprops.count() * (has_notify_signal ? 4 : 3) + 1;
uint *data = new uint[data_len];
int i_offset = header_size;
int g_offset = i_offset + class_info_list.count() * 2;
int s_offset = g_offset + qo->nr_signals * 5;
int p_offset = s_offset + qo->pslots.count() * 5;
int n_offset = p_offset + pprops.count() * 3;
int empty = 0;
for (int i = 0; i < data_len; ++i)
data[i] = 0;
// The revision number.
data[0] = revision;
#endif
// Set up any class information.
if (class_info_list.count() > 0)
{
#if QT_VERSION < 0x050000
data[2] = class_info_list.count();
data[3] = i_offset;
#endif
for (int i = 0; i < class_info_list.count(); ++i)
{
const ClassInfo &ci = class_info_list.at(i);
#if QT_VERSION >= 0x050000
builder.addClassInfo(ci.first, ci.second);
#else
data[i_offset + (i * 2) + 0] = qo->str_data.size();
qo->str_data.append(ci.first.constData());
qo->str_data.append('\0');
data[i_offset + (i * 2) + 1] = qo->str_data.size();
qo->str_data.append(ci.second.constData());
qo->str_data.append('\0');
#endif
}
}
#if QT_VERSION < 0x050000
// Set up the methods count and offset.
if (qo->nr_signals || qo->pslots.count())
{
data[4] = qo->nr_signals + qo->pslots.count();
data[5] = g_offset;
// We might need an empty string.
empty = qo->str_data.size();
qo->str_data.append('\0');
}
// Set up the properties count and offset.
if (pprops.count())
{
data[6] = pprops.count();
data[7] = p_offset;
}
#if QT_VERSION >= 0x040600
data[13] = qo->nr_signals;
#endif
#endif
// Add the signals to the meta-object.
for (int g = 0; g < qo->nr_signals; ++g)
{
const QByteArray &norm = psigs.at(g);
#if QT_VERSION >= 0x050000
builder.addSignal(norm.mid(1));
#else
// Add the (non-existent) argument names.
data[g_offset + (g * 5) + 1] = add_arg_names(qo, norm, empty);
// Add the full signature.
data[g_offset + (g * 5) + 0] = qo->str_data.size();
qo->str_data.append(norm.constData() + 1);
qo->str_data.append('\0');
// Add the type, tag and flags.
data[g_offset + (g * 5) + 2] = empty;
data[g_offset + (g * 5) + 3] = empty;
data[g_offset + (g * 5) + 4] = 0x05;
#endif
}
// Add the slots to the meta-object.
for (int s = 0; s < qo->pslots.count(); ++s)
{
const qpycore_slot &slot = qo->pslots.at(s);
const QByteArray &sig = slot.signature->signature;
#if QT_VERSION >= 0x050000
QMetaMethodBuilder slot_builder = builder.addSlot(sig);
#else
// Add the (non-existent) argument names.
data[s_offset + (s * 5) + 1] = add_arg_names(qo, sig, empty);
// Add the full signature.
data[s_offset + (s * 5) + 0] = qo->str_data.size();
qo->str_data.append(sig);
qo->str_data.append('\0');
#endif
// Add any type.
if (slot.signature->result)
{
#if QT_VERSION >= 0x050000
slot_builder.setReturnType(slot.signature->result->name());
#else
data[s_offset + (s * 5) + 2] = qo->str_data.size();
qo->str_data.append(slot.signature->result->name());
qo->str_data.append('\0');
#endif
}
#if QT_VERSION < 0x050000
else
{
data[s_offset + (s * 5) + 2] = empty;
}
// Add the tag and flags.
data[s_offset + (s * 5) + 3] = empty;
data[s_offset + (s * 5) + 4] = 0x0a;
#endif
}
// Add the properties to the meta-object.
#if QT_VERSION < 0x050000
QList<uint> notify_signals;
#endif
QMapIterator<uint, prop_data> it(pprops);
for (int p = 0; it.hasNext(); ++p)
{
it.next();
const prop_data &pprop = it.value();
const char *prop_name = SIPBytes_AS_STRING(pprop.first);
qpycore_pyqtProperty *pp = (qpycore_pyqtProperty *)pprop.second;
int notifier_id;
#if QT_VERSION < 0x050000
uint flags = 0;
#endif
if (pp->pyqtprop_notify)
{
qpycore_pyqtSignal *ps = (qpycore_pyqtSignal *)pp->pyqtprop_notify;
const QByteArray &sig = ps->signature->signature;
#if QT_VERSION >= 0x050000
notifier_id = builder.indexOfSignal(sig.mid(1));
#else
notifier_id = psigs.indexOf(sig);
#endif
if (notifier_id < 0)
{
PyErr_Format(PyExc_TypeError,
"the notify signal '%s' was not defined in this class",
sig.constData() + 1);
// Note that we leak the property name.
return -1;
}
#if QT_VERSION < 0x050000
notify_signals.append(notifier_id);
flags |= 0x00400000;
#endif
}
else
{
#if QT_VERSION >= 0x050000
notifier_id = -1;
#else
notify_signals.append(0);
#endif
}
#if QT_VERSION >= 0x050000
// A Qt v5 revision 7 meta-object holds the QMetaType::Type of the type
// or its name if it is unresolved (ie. not known to the type system).
// In Qt v4 both are held. For QObject sub-classes Chimera will fall
// back to the QMetaType::QObjectStar if there is no specific meta-type
// for the sub-class. This means that, for Qt v4,
// QMetaProperty::read() can handle the type. However, Qt v5 doesn't
// know that the unresolved type is a QObject sub-class. Therefore we
// have to tell it that the property is a QObject, rather than the
// sub-class. This means that QMetaProperty.typeName() will always
// return "QObject*".
QByteArray prop_type;
if (pp->pyqtprop_parsed_type->metatype() == QMetaType::QObjectStar)
prop_type = "QObject*";
else
prop_type = pp->pyqtprop_parsed_type->name();
QMetaPropertyBuilder prop_builder = builder.addProperty(prop_name,
prop_type, notifier_id);
// Reset the defaults.
prop_builder.setReadable(false);
prop_builder.setWritable(false);
#else
// Add the property name.
data[p_offset + (p * 3) + 0] = qo->str_data.size();
qo->str_data.append(prop_name);
qo->str_data.append('\0');
// Add the name of the property type.
data[p_offset + (p * 3) + 1] = qo->str_data.size();
qo->str_data.append(pp->pyqtprop_parsed_type->name());
qo->str_data.append('\0');
// There are only 8 bits available for the type so use the special
// value if more are required.
uint metatype = pp->pyqtprop_parsed_type->metatype();
if (metatype > 0xff)
{
#if QT_VERSION >= 0x040600
// Qt assumes it is an enum.
metatype = 0;
flags |= 0x00000008;
#else
// This is the old PyQt behaviour. It may not be correct, but
// nobody has complained, and if it ain't broke...
metatype = 0xff;
#endif
}
#endif
// Enum or flag.
if (pp->pyqtprop_parsed_type->isEnum() || pp->pyqtprop_parsed_type->isFlag())
{
#if QT_VERSION >= 0x050000
prop_builder.setEnumOrFlag(true);
#else
#if QT_VERSION >= 0x040600
metatype = 0;
#endif
flags |= 0x00000008;
#endif
}
#if QT_VERSION < 0x050000
flags |= metatype << 24;
#endif
if (pp->pyqtprop_get && PyCallable_Check(pp->pyqtprop_get))
// Readable.
#if QT_VERSION >= 0x050000
prop_builder.setReadable(true);
#else
flags |= 0x00000001;
#endif
if (pp->pyqtprop_set && PyCallable_Check(pp->pyqtprop_set))
{
// Writable.
#if QT_VERSION >= 0x050000
prop_builder.setWritable(true);
#else
flags |= 0x00000002;
#endif
// See if the name of the setter follows the Designer convention.
// If so tell the UI compilers not to use setProperty().
PyObject *setter_name_obj = PyObject_GetAttr(pp->pyqtprop_set,
qpycore_name_attr_name);
if (setter_name_obj)
{
PyObject *ascii_obj = setter_name_obj;
const char *ascii = sipString_AsASCIIString(&ascii_obj);
Py_DECREF(setter_name_obj);
if (ascii)
{
if (qstrlen(ascii) > 3 && ascii[0] == 's' &&
ascii[1] == 'e' && ascii[2] == 't' &&
ascii[3] == toupper(prop_name[0]) &&
qstrcmp(&ascii[4], &prop_name[1]) == 0)
#if QT_VERSION >= 0x050000
prop_builder.setStdCppSet(true);
#else
flags |= 0x00000100;
#endif
}
Py_DECREF(ascii_obj);
}
PyErr_Clear();
}
if (pp->pyqtprop_reset && PyCallable_Check(pp->pyqtprop_reset))
// Resetable.
#if QT_VERSION >= 0x050000
prop_builder.setResettable(true);
#else
flags |= 0x00000004;
#endif
// Add the property flags.
#if QT_VERSION >= 0x050000
// Note that Qt4 always seems to have ResolveEditable set but
// QMetaObjectBuilder doesn't provide an API call to do it.
prop_builder.setDesignable(pp->pyqtprop_flags & 0x00001000);
prop_builder.setScriptable(pp->pyqtprop_flags & 0x00004000);
prop_builder.setStored(pp->pyqtprop_flags & 0x00010000);
prop_builder.setUser(pp->pyqtprop_flags & 0x00100000);
prop_builder.setConstant(pp->pyqtprop_flags & 0x00000400);
prop_builder.setFinal(pp->pyqtprop_flags & 0x00000800);
#else
flags |= pp->pyqtprop_flags;
data[p_offset + (p * 3) + 2] = flags;
#endif
// Save the property data for qt_metacall(). (We already have a
// reference.)
qo->pprops.append(pp);
// We've finished with the property name.
Py_DECREF(pprop.first);
}
#if QT_VERSION < 0x050000
// Add the indices of the notify signals.
if (has_notify_signal)
{
QListIterator<uint> notify_it(notify_signals);
while (notify_it.hasNext())
data[n_offset++] = notify_it.next();
}
#endif
// Initialise the rest of the meta-object.
#if QT_VERSION >= 0x050000
qo->mo = builder.toMetaObject();
#else
qo->mo.d.stringdata = qo->str_data.constData();
qo->mo.d.data = data;
#endif
// Save the meta-object.
pyqt_wt->metaobject = qo;
return 0;
}
// Create a dynamic meta-object for a Python type by introspecting its
// attributes. Note that it leaks if the type is deleted.
static int create_dynamic_metaobject(pyqtWrapperType *pyqt_wt)
{
PyTypeObject *pytype = (PyTypeObject *)pyqt_wt;
qpycore_metaobject *qo = new qpycore_metaobject;
// Get the super-type's meta-object.
qo->mo.d.superdata = get_qmetaobject((pyqtWrapperType *)pytype->tp_base);
// Get the name of the type. Dynamic types have simple names.
qo->str_data = pytype->tp_name;
qo->str_data.append('\0');
// Go through the class dictionary getting all PyQt properties, slots,
// signals or a (deprecated) sequence of signals.
typedef QPair<PyObject *, PyObject *> prop_data;
QMap<uint, prop_data> pprops;
QList<QByteArray> psigs;
QList<const QMetaObject *> enum_scopes;
SIP_SSIZE_T pos = 0;
PyObject *key, *value;
while (PyDict_Next(pytype->tp_dict, &pos, &key, &value))
{
// See if it is a slot, ie. it has been decorated with pyqtSlot().
PyObject *sig_obj = PyObject_GetAttr(value,
qpycore_signature_attr_name);
if (sig_obj)
{
// Make sure it is a list and not some legitimate attribute that
// happens to use our special name.
if (PyList_Check(sig_obj))
{
for (SIP_SSIZE_T i = 0; i < PyList_GET_SIZE(sig_obj); ++i)
{
qpycore_slot slot;
// Set up the skeleton slot.
PyObject *decoration = PyList_GET_ITEM(sig_obj, i);
slot.signature = Chimera::Signature::fromPyObject(decoration);
slot.sip_slot.pyobj = 0;
slot.sip_slot.name = 0;
slot.sip_slot.meth.mfunc = value;
slot.sip_slot.meth.mself = 0;
#if PY_MAJOR_VERSION < 3
slot.sip_slot.meth.mclass = (PyObject *)pyqt_wt;
#endif
slot.sip_slot.weakSlot = 0;
qo->pslots.append(slot);
}
}
Py_DECREF(sig_obj);
}
else
{
PyErr_Clear();
// Make sure the key is an ASCII string. Delay the error checking
// until we know we actually need it.
const char *ascii_key = sipString_AsASCIIString(&key);
// See if the value is of interest.
if (PyType_IsSubtype(Py_TYPE(value), &qpycore_pyqtProperty_Type))
{
// It is a property.
if (!ascii_key)
return -1;
Py_INCREF(value);
qpycore_pyqtProperty *pp = (qpycore_pyqtProperty *)value;
pprops.insert(pp->pyqtprop_sequence, prop_data(key, value));
// See if the property has a scope. If so, collect all
// QMetaObject pointers that are not in the super-class
// hierarchy.
const QMetaObject *mo = get_scope_qmetaobject(pp->pyqtprop_parsed_type);
if (mo && !enum_scopes.contains(mo))
enum_scopes.append(mo);
}
else if (PyType_IsSubtype(Py_TYPE(value), &qpycore_pyqtSignal_Type))
{
// It is a signal.
if (!ascii_key)
return -1;
qpycore_pyqtSignal *ps = (qpycore_pyqtSignal *)value;
// Make sure the signal has a name.
qpycore_set_signal_name(ps, ascii_key);
// Add all the overloads.
for (int ol = 0; ol < ps->overloads->size(); ++ol)
psigs.append(ps->overloads->at(ol)->signature);
Py_DECREF(key);
}
else if (ascii_key && qstrcmp(ascii_key, "__pyqtSignals__") == 0)
{
// It is a sequence of signal signatures. This is deprecated
// in favour of pyqtSignal().
if (PySequence_Check(value))
{
SIP_SSIZE_T seq_sz = PySequence_Size(value);
for (SIP_SSIZE_T i = 0; i < seq_sz; ++i)
{
PyObject *itm = PySequence_ITEM(value, i);
if (!itm)
{
Py_DECREF(key);
return -1;
}
PyObject *ascii_itm = itm;
const char *ascii = sipString_AsASCIIString(&ascii_itm);
Py_DECREF(itm);
if (!ascii)
{
Py_DECREF(key);
return -1;
}
QByteArray old_sig = QMetaObject::normalizedSignature(ascii);
old_sig.prepend('2');
psigs.append(old_sig);
Py_DECREF(ascii_itm);
}
}
Py_DECREF(key);
}
}
}
qo->nr_signals = psigs.count();
// Create and fill the extradata array.
if (enum_scopes.isEmpty())
{
qo->mo.d.extradata = 0;
}
else
{
const QMetaObject **objects = new const QMetaObject *[enum_scopes.size() + 1];
for (int i = 0; i < enum_scopes.size(); ++i)
objects[i] = enum_scopes.at(i);
objects[enum_scopes.size()] = 0;
qo->mo.d.extradata = objects;
}
// Initialise the header section of the data table. Qt v4.5 introduced
// revision 2 which added constructors. However the design is broken in
// that the static meta-call function doesn't provide enough information to
// determine which Python sub-class of a Qt class is to be created. So we
// stick with revision 1 (and don't allow pyqtSlot() to decorate __init__).
const int revision = 1;
const int header_size = 10;
int data_len = header_size + qo->nr_signals * 5 + qo->pslots.count() * 5 +
pprops.count() * 3 + 1;
uint *data = new uint[data_len];
int g_offset = header_size;
int s_offset = g_offset + qo->nr_signals * 5;
int p_offset = s_offset + qo->pslots.count() * 5;
int empty = 0;
for (int i = 0; i < data_len; ++i)
data[i] = 0;
// The revision number.
data[0] = revision;
// Set up the methods count and offset.
if (qo->nr_signals || qo->pslots.count())
{
data[4] = qo->nr_signals + qo->pslots.count();
data[5] = g_offset;
// We might need an empty string.
empty = qo->str_data.size();
qo->str_data.append('\0');
}
// Set up the properties count and offset.
if (pprops.count())
{
data[6] = pprops.count();
data[7] = p_offset;
}
// Add the signals to the meta-object.
for (int g = 0; g < qo->nr_signals; ++g)
{
const QByteArray &norm = psigs.at(g);
// Add the (non-existent) argument names.
data[g_offset + (g * 5) + 1] = add_arg_names(qo, norm, empty);
// Add the full signature.
data[g_offset + (g * 5) + 0] = qo->str_data.size();
qo->str_data.append(norm.constData() + 1);
qo->str_data.append('\0');
// Add the type, tag and flags.
data[g_offset + (g * 5) + 2] = empty;
data[g_offset + (g * 5) + 3] = empty;
data[g_offset + (g * 5) + 4] = 0x05;
}
// Add the slots to the meta-object.
for (int s = 0; s < qo->pslots.count(); ++s)
{
const qpycore_slot &slot = qo->pslots.at(s);
const QByteArray &sig = slot.signature->signature;
// Add the (non-existent) argument names.
data[s_offset + (s * 5) + 1] = add_arg_names(qo, sig, empty);
// Add the full signature.
data[s_offset + (s * 5) + 0] = qo->str_data.size();
qo->str_data.append(sig);
qo->str_data.append('\0');
// Add any type.
if (slot.signature->result)
{
data[s_offset + (s * 5) + 2] = qo->str_data.size();
qo->str_data.append(slot.signature->result->name());
qo->str_data.append('\0');
}
else
{
data[s_offset + (s * 5) + 2] = empty;
}
// Add the tag and flags.
data[s_offset + (s * 5) + 3] = empty;
data[s_offset + (s * 5) + 4] = 0x0a;
}
// Add the properties to the meta-object.
QMapIterator<uint, prop_data> it(pprops);
for (int p = 0; it.hasNext(); ++p)
{
it.next();
const prop_data &pprop = it.value();
const char *prop_name = SIPBytes_AS_STRING(pprop.first);
qpycore_pyqtProperty *pp = (qpycore_pyqtProperty *)pprop.second;
// Add the property name.
data[p_offset + (p * 3) + 0] = qo->str_data.size();
qo->str_data.append(prop_name);
qo->str_data.append('\0');
// Add the name of the property type.
data[p_offset + (p * 3) + 1] = qo->str_data.size();
qo->str_data.append(pp->pyqtprop_parsed_type->name());
qo->str_data.append('\0');
// Add the property flags.
uint flags = pp->pyqtprop_flags;
// Enum or flag.
if (pp->pyqtprop_parsed_type->isEnum() || pp->pyqtprop_parsed_type->isFlag())
flags |= 0x00000008;
if (pp->prop_get && PyCallable_Check(pp->prop_get))
// Readable.
flags |= 0x00000001;
if (pp->prop_set && PyCallable_Check(pp->prop_set))
{
// Writable.
flags |= 0x00000002;
// See if the name of the setter follows the Designer convention.
// If so tell the UI compilers not to use setProperty().
PyObject *setter_name_obj = PyObject_GetAttr(pp->prop_set,
qpycore_name_attr_name);
if (setter_name_obj)
{
PyObject *ascii_obj = setter_name_obj;
const char *ascii = sipString_AsASCIIString(&ascii_obj);
Py_DECREF(setter_name_obj);
if (ascii)
{
if (qstrlen(ascii) > 3 && ascii[0] == 's' &&
ascii[1] == 'e' && ascii[2] == 't' &&
ascii[3] == toupper(prop_name[0]) &&
qstrcmp(&ascii[4], &prop_name[1]) == 0)
flags |= 0x00000100;
}
Py_DECREF(ascii_obj);
}
PyErr_Clear();
}
if (pp->pyqtprop_reset && PyCallable_Check(pp->pyqtprop_reset))
// Resetable.
flags |= 0x00000004;
// There are only 8 bits available for the type so use the special
// value if more are required.
uint metatype = pp->pyqtprop_parsed_type->metatype();
if (metatype > 0xff)
metatype = 0xff;
flags |= metatype << 24;
data[p_offset + (p * 3) + 2] = flags;
// Save the property data for qt_metacall(). (We already have a
// reference.)
qo->pprops.append(pp);
// We've finished with the property name.
Py_DECREF(pprop.first);
}
// Initialise the rest of the meta-object.
qo->mo.d.stringdata = qo->str_data.constData();
qo->mo.d.data = data;
// Save the meta-object.
pyqt_wt->metaobject = qo;
return 0;
}
// Create a dynamic meta-object for a Python type by introspecting its
// attributes. Note that it leaks if the type is deleted.
static int create_dynamic_metaobject(pyqtWrapperType *pyqt_wt)
{
PyTypeObject *pytype = (PyTypeObject *)pyqt_wt;
qpycore_metaobject *qo = new qpycore_metaobject;
QMetaObjectBuilder builder;
// Get any class info.
QList<ClassInfo> class_info_list = qpycore_get_class_info_list();
// Get any enums/flags.
QList<EnumsFlags> enums_flags_list = qpycore_get_enums_flags_list();
// Get the super-type's meta-object.
builder.setSuperClass(get_qmetaobject((pyqtWrapperType *)pytype->tp_base));
// Get the name of the type. Dynamic types have simple names.
builder.setClassName(pytype->tp_name);
// Go through the class hierarchy getting all PyQt properties, slots and
// signals.
QList<const qpycore_pyqtSignal *> psigs;
QMap<uint, PropertyData> pprops;
if (trawl_hierarchy(pytype, qo, builder, psigs, pprops) < 0)
return -1;
qo->nr_signals = psigs.count();
// Initialise the header section of the data table. Note that Qt v4.5
// introduced revision 2 which added constructors. However the design is
// broken in that the static meta-call function doesn't provide enough
// information to determine which Python sub-class of a Qt class is to be
// created. So we stick with revision 1 (and don't allow pyqtSlot() to
// decorate __init__).
// Set up any class information.
for (int i = 0; i < class_info_list.count(); ++i)
{
const ClassInfo &ci = class_info_list.at(i);
builder.addClassInfo(ci.first, ci.second);
}
// Set up any enums/flags.
for (int i = 0; i < enums_flags_list.count(); ++i)
{
const EnumsFlags &ef = enums_flags_list.at(i);
QByteArray scoped_name(pytype->tp_name);
scoped_name.append("::");
scoped_name.append(ef.name);
QMetaEnumBuilder enum_builder = builder.addEnumerator(scoped_name);
enum_builder.setIsFlag(ef.isFlag);
QHash<QByteArray, int>::const_iterator it = ef.keys.constBegin();
while (it != ef.keys.constEnd())
{
enum_builder.addKey(it.key(), it.value());
++it;
}
}
// Add the signals to the meta-object.
for (int g = 0; g < qo->nr_signals; ++g)
{
const qpycore_pyqtSignal *ps = psigs.at(g);
QMetaMethodBuilder signal_builder = builder.addSignal(
ps->parsed_signature->signature.mid(1));
if (ps->parameter_names)
signal_builder.setParameterNames(*ps->parameter_names);
signal_builder.setRevision(ps->revision);
}
// Add the slots to the meta-object.
for (int s = 0; s < qo->pslots.count(); ++s)
{
const Chimera::Signature *slot_signature = qo->pslots.at(s)->slotSignature();
const QByteArray &sig = slot_signature->signature;
QMetaMethodBuilder slot_builder = builder.addSlot(sig);
// Add any type.
if (slot_signature->result)
slot_builder.setReturnType(slot_signature->result->name());
slot_builder.setRevision(slot_signature->revision);
}
// Add the properties to the meta-object.
QMapIterator<uint, PropertyData> it(pprops);
for (int p = 0; it.hasNext(); ++p)
{
it.next();
const PropertyData &pprop = it.value();
const char *prop_name = SIPBytes_AS_STRING(pprop.first);
qpycore_pyqtProperty *pp = (qpycore_pyqtProperty *)pprop.second;
int notifier_id;
if (pp->pyqtprop_notify)
{
qpycore_pyqtSignal *ps = (qpycore_pyqtSignal *)pp->pyqtprop_notify;
const QByteArray &sig = ps->parsed_signature->signature;
notifier_id = builder.indexOfSignal(sig.mid(1));
if (notifier_id < 0)
{
PyErr_Format(PyExc_TypeError,
"the notify signal '%s' was not defined in this class",
sig.constData() + 1);
// Note that we leak the property name.
return -1;
}
}
else
{
notifier_id = -1;
}
// A Qt v5 revision 7 meta-object holds the QMetaType::Type of the type
// or its name if it is unresolved (ie. not known to the type system).
// In Qt v4 both are held. For QObject sub-classes Chimera will fall
// back to the QMetaType::QObjectStar if there is no specific meta-type
// for the sub-class. This means that, for Qt v4,
// QMetaProperty::read() can handle the type. However, Qt v5 doesn't
// know that the unresolved type is a QObject sub-class. Therefore we
// have to tell it that the property is a QObject, rather than the
// sub-class. This means that QMetaProperty.typeName() will always
// return "QObject*".
QByteArray prop_type;
if (pp->pyqtprop_parsed_type->metatype() == QMetaType::QObjectStar)
{
// However, if the type is a Python sub-class of QObject then we
// use the name of the Python type. This anticipates that the type
// is one that will be proxied by QML at some point.
if (pp->pyqtprop_parsed_type->typeDef() == sipType_QObject)
{
prop_type = ((PyTypeObject *)pp->pyqtprop_parsed_type->py_type())->tp_name;
prop_type.append('*');
}
else
{
prop_type = "QObject*";
}
}
else
{
prop_type = pp->pyqtprop_parsed_type->name();
}
QMetaPropertyBuilder prop_builder = builder.addProperty(prop_name,
prop_type, notifier_id);
// Reset the defaults.
prop_builder.setReadable(false);
prop_builder.setWritable(false);
// Enum or flag.
if (pp->pyqtprop_parsed_type->isEnum() || pp->pyqtprop_parsed_type->isFlag())
{
prop_builder.setEnumOrFlag(true);
}
if (pp->pyqtprop_get && PyCallable_Check(pp->pyqtprop_get))
{
// Readable.
prop_builder.setReadable(true);
}
if (pp->pyqtprop_set && PyCallable_Check(pp->pyqtprop_set))
{
// Writable.
prop_builder.setWritable(true);
// See if the name of the setter follows the Designer convention.
// If so tell the UI compilers not to use setProperty().
PyObject *setter_name_obj = PyObject_GetAttr(pp->pyqtprop_set,
qpycore_dunder_name);
if (setter_name_obj)
{
PyObject *ascii_obj = setter_name_obj;
const char *ascii = sipString_AsASCIIString(&ascii_obj);
Py_DECREF(setter_name_obj);
if (ascii)
{
if (qstrlen(ascii) > 3 && ascii[0] == 's' &&
ascii[1] == 'e' && ascii[2] == 't' &&
ascii[3] == toupper(prop_name[0]) &&
qstrcmp(&ascii[4], &prop_name[1]) == 0)
prop_builder.setStdCppSet(true);
}
Py_DECREF(ascii_obj);
}
PyErr_Clear();
}
if (pp->pyqtprop_reset && PyCallable_Check(pp->pyqtprop_reset))
{
// Resetable.
prop_builder.setResettable(true);
}
// Add the property flags. Note that Qt4 always seems to have
// ResolveEditable set but QMetaObjectBuilder doesn't provide an API
// call to do it.
prop_builder.setDesignable(pp->pyqtprop_flags & 0x00001000);
prop_builder.setScriptable(pp->pyqtprop_flags & 0x00004000);
prop_builder.setStored(pp->pyqtprop_flags & 0x00010000);
prop_builder.setUser(pp->pyqtprop_flags & 0x00100000);
prop_builder.setConstant(pp->pyqtprop_flags & 0x00000400);
prop_builder.setFinal(pp->pyqtprop_flags & 0x00000800);
prop_builder.setRevision(pp->pyqtprop_revision);
// Save the property data for qt_metacall(). (We already have a
// reference.)
qo->pprops.append(pp);
// We've finished with the property name.
Py_DECREF(pprop.first);
}
// Initialise the rest of the meta-object.
qo->mo = builder.toMetaObject();
// Save the meta-object.
pyqt_wt->metaobject = qo;
return 0;
}