C++ QMetaObjectBuilder::addProperty方法代码示例

void deserializeInitDynamicPacket(QDataStream &in, QMetaObjectBuilder &builder, QVariantList &values)
{
    quint32 numSignals = 0;
    quint32 numMethods = 0;
    quint32 numProperties = 0;

    in >> numSignals;
    in >> numMethods;

    int curIndex = 0;

    for (quint32 i = 0; i < numSignals; ++i) {
        QByteArray signature;
        in >> signature;
        ++curIndex;
        builder.addSignal(signature);
    }

    for (quint32 i = 0; i < numMethods; ++i) {
        QByteArray signature, returnType;

        in >> signature;
        in >> returnType;
        ++curIndex;
        const bool isVoid = returnType.isEmpty() || returnType == QByteArrayLiteral("void");
        if (isVoid)
            builder.addMethod(signature);
        else
            builder.addMethod(signature, QByteArrayLiteral("QRemoteObjectPendingCall"));
    }

    in >> numProperties;
    const quint32 initialListSize = values.size();
    if (static_cast<quint32>(values.size()) < numProperties)
        values.reserve(numProperties);
    else if (static_cast<quint32>(values.size()) > numProperties)
        for (quint32 i = numProperties; i < initialListSize; ++i)
            values.removeLast();

    for (quint32 i = 0; i < numProperties; ++i) {
        QByteArray name;
        QByteArray typeName;
        QByteArray signalName;
        in >> name;
        in >> typeName;
        in >> signalName;
        if (signalName.isEmpty())
            builder.addProperty(name, typeName);
        else
            builder.addProperty(name, typeName, builder.indexOfSignal(signalName));
        QVariant value;
        in >> value;
        if (i < initialListSize)
            values[i] = value;
        else
            values.append(value);
    }
}

QMetaObject *GoValue::metaObjectFor(GoTypeInfo *typeInfo)
{
    if (typeInfo->metaObject) {
            return reinterpret_cast<QMetaObject *>(typeInfo->metaObject);
    }

    QMetaObjectBuilder mob;
    mob.setSuperClass(&QObject::staticMetaObject);
    mob.setClassName(typeInfo->typeName);
    mob.setFlags(QMetaObjectBuilder::DynamicMetaObject);

    GoMemberInfo *memberInfo;
    
    memberInfo = typeInfo->fields;
    int relativePropIndex = mob.propertyCount();
    for (int i = 0; i < typeInfo->fieldsLen; i++) {
        mob.addSignal("__" + QByteArray::number(relativePropIndex) + "()");
        QMetaPropertyBuilder propb = mob.addProperty(memberInfo->memberName, "QVariant", relativePropIndex);
        propb.setWritable(true);
        memberInfo->metaIndex = relativePropIndex;
        memberInfo++;
        relativePropIndex++;
    }

    memberInfo = typeInfo->methods;
    int relativeMethodIndex = mob.methodCount();
    for (int i = 0; i < typeInfo->methodsLen; i++) {
        if (*memberInfo->resultSignature) {
            mob.addMethod(memberInfo->methodSignature, memberInfo->resultSignature);
        } else {
            mob.addMethod(memberInfo->methodSignature);
        }
        memberInfo->metaIndex = relativeMethodIndex;
        memberInfo++;
        relativeMethodIndex++;
    }

    QMetaObject *mo = mob.toMetaObject();

    // Turn the relative indexes into absolute indexes.
    memberInfo = typeInfo->fields;
    int propOffset = mo->propertyOffset();
    for (int i = 0; i < typeInfo->fieldsLen; i++) {
        memberInfo->metaIndex += propOffset;
        memberInfo++;
    }
    memberInfo = typeInfo->methods;
    int methodOffset = mo->methodOffset();
    for (int i = 0; i < typeInfo->methodsLen; i++) {
        memberInfo->metaIndex += methodOffset;
        memberInfo++;
    }

    typeInfo->metaObject = mo;
    return mo;
}

QMetaObject *DosQMetaObject::createMetaObject(const QString &className,
                                              const SignalDefinitions &signalDefinitions,
                                              const SlotDefinitions &slotDefinitions,
                                              const PropertyDefinitions &propertyDefinitions)
{
    QMetaObjectBuilder builder;
    builder.setClassName(className.toUtf8());
    builder.setSuperClass(m_superClassDosMetaObject->metaObject());

    for (const SignalDefinition &signal : signalDefinitions) {
        QMetaMethodBuilder signalBuilder = builder.addSignal(::createSignature(signal));
        signalBuilder.setReturnType(QMetaType::typeName(QMetaType::Void));
        signalBuilder.setAccess(QMetaMethod::Public);
        signalBuilder.setParameterNames(createParameterNames(signal));
        m_signalIndexByName[signal.name] = signalBuilder.index();
    }

    QHash<QString, int> methodIndexByName;
    for (const SlotDefinition &slot : slotDefinitions) {
        QMetaMethodBuilder methodBuilder = builder.addSlot(::createSignature(slot));
        methodBuilder.setReturnType(QMetaType::typeName(slot.returnType));
        methodBuilder.setAttributes(QMetaMethod::Scriptable);
        methodIndexByName[slot.name] = methodBuilder.index();
    }

    for (const PropertyDefinition &property : propertyDefinitions) {
        const int writer = methodIndexByName.value(property.writeSlot, -1);
        const int notifier = m_signalIndexByName.value(property.notifySignal, -1);
        const QByteArray name = property.name.toUtf8();
        const QByteArray typeName = QMetaObject::normalizedType(QMetaType::typeName(property.type));
        QMetaPropertyBuilder propertyBuilder = builder.addProperty(name, typeName, notifier);
        if (writer == -1)
            propertyBuilder.setWritable(false);
        if (notifier == -1)
            propertyBuilder.setConstant(true);
        m_propertySlots[property.name] = qMakePair(methodIndexByName.value(property.readSlot, -1),
                                                   methodIndexByName.value(property.writeSlot, -1));
    }

    return builder.toMetaObject();
}

QMetaObject *metaObjectFor(GoTypeInfo *typeInfo)
{
    if (typeInfo->metaObject) {
            return reinterpret_cast<QMetaObject *>(typeInfo->metaObject);
    }

    QMetaObjectBuilder mob;
    if (typeInfo->paint) {
        mob.setSuperClass(&QQuickPaintedItem::staticMetaObject);
    } else {
        mob.setSuperClass(&QObject::staticMetaObject);
    }
    mob.setClassName(typeInfo->typeName);
    mob.setFlags(QMetaObjectBuilder::DynamicMetaObject);

    GoMemberInfo *memberInfo;
    
    memberInfo = typeInfo->fields;
    int relativePropIndex = mob.propertyCount();
    for (int i = 0; i < typeInfo->fieldsLen; i++) {
        mob.addSignal("__" + QByteArray::number(relativePropIndex) + "()");
        const char *typeName = "QVariant";
        if (memberInfo->memberType == DTListProperty) {
            typeName = "QQmlListProperty<QObject>";
        }
        QMetaPropertyBuilder propb = mob.addProperty(memberInfo->memberName, typeName, relativePropIndex);
        propb.setWritable(true);
        memberInfo->metaIndex = relativePropIndex;
        memberInfo++;
        relativePropIndex++;
    }

    memberInfo = typeInfo->methods;
    int relativeMethodIndex = mob.methodCount();
    for (int i = 0; i < typeInfo->methodsLen; i++) {
        if (*memberInfo->resultSignature) {
            mob.addMethod(memberInfo->methodSignature, memberInfo->resultSignature);
        } else {
            mob.addMethod(memberInfo->methodSignature);
        }
        memberInfo->metaIndex = relativeMethodIndex;
        memberInfo++;
        relativeMethodIndex++;
    }

    // TODO Support default properties.
    //mob.addClassInfo("DefaultProperty", "objects");

    QMetaObject *mo = mob.toMetaObject();

    // Turn the relative indexes into absolute indexes.
    memberInfo = typeInfo->fields;
    int propOffset = mo->propertyOffset();
    for (int i = 0; i < typeInfo->fieldsLen; i++) {
        memberInfo->metaIndex += propOffset;
        memberInfo++;
    }
    memberInfo = typeInfo->methods;
    int methodOffset = mo->methodOffset();
    for (int i = 0; i < typeInfo->methodsLen; i++) {
        memberInfo->metaIndex += methodOffset;
        memberInfo++;
    }

    typeInfo->metaObject = mo;
    return mo;
}

//.........这里部分代码省略.........

#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
        }

//.........这里部分代码省略.........

        // 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);

static void clone(QMetaObjectBuilder &builder, const QMetaObject *mo, 
                  const QMetaObject *ignoreStart, const QMetaObject *ignoreEnd)
{
    // Set classname
    builder.setClassName(ignoreEnd->className());

    // Clone Q_CLASSINFO
    for (int ii = mo->classInfoOffset(); ii < mo->classInfoCount(); ++ii) {
        QMetaClassInfo info = mo->classInfo(ii);

        int otherIndex = ignoreEnd->indexOfClassInfo(info.name());
        if (otherIndex >= ignoreStart->classInfoOffset() + ignoreStart->classInfoCount()) {
            // Skip 
        } else {
            builder.addClassInfo(info.name(), info.value());
        }
    }

    // Clone Q_PROPERTY
    for (int ii = mo->propertyOffset(); ii < mo->propertyCount(); ++ii) {
        QMetaProperty property = mo->property(ii);

        int otherIndex = ignoreEnd->indexOfProperty(property.name());
        if (otherIndex >= ignoreStart->propertyOffset() + ignoreStart->propertyCount()) {
            builder.addProperty(QByteArray("__qml_ignore__") + property.name(), QByteArray("void"));
            // Skip 
        } else {
            builder.addProperty(property);
        }
    }

    // Clone Q_METHODS
    for (int ii = mo->methodOffset(); ii < mo->methodCount(); ++ii) {
        QMetaMethod method = mo->method(ii);

        // More complex - need to search name
        QByteArray name = method.name();


        bool found = false;

        for (int ii = ignoreStart->methodOffset() + ignoreStart->methodCount(); 
             !found && ii < ignoreEnd->methodOffset() + ignoreEnd->methodCount();
             ++ii) {

            QMetaMethod other = ignoreEnd->method(ii);

            found = name == other.name();
        }

        QMetaMethodBuilder m = builder.addMethod(method);
        if (found) // SKIP
            m.setAccess(QMetaMethod::Private);
    }

    // Clone Q_ENUMS
    for (int ii = mo->enumeratorOffset(); ii < mo->enumeratorCount(); ++ii) {
        QMetaEnum enumerator = mo->enumerator(ii);

        int otherIndex = ignoreEnd->indexOfEnumerator(enumerator.name());
        if (otherIndex >= ignoreStart->enumeratorOffset() + ignoreStart->enumeratorCount()) {
            // Skip 
        } else {
            builder.addEnumerator(enumerator);
        }
    }
}