358 lines
12 KiB
C++
358 lines
12 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
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**
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** This file is part of the plugins of the Qt Toolkit.
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**
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** This file may be used under the terms of the GNU General Public
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** License version 2.0 as published by the Free Software Foundation
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** and appearing in the file LICENSE.GPL included in the packaging of
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** this file. Please review the following information to ensure GNU
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** General Public Licensing requirements will be met:
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** http://trolltech.com/products/qt/licenses/licensing/opensource/
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**
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** If you are unsure which license is appropriate for your use, please
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** review the following information:
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** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
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** or contact the sales department at sales@trolltech.com.
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**
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** In addition, as a special exception, Trolltech gives you certain
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** additional rights. These rights are described in the Trolltech GPL
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** Exception version 1.0, which can be found at
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** http://www.trolltech.com/products/qt/gplexception/ and in the file
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** GPL_EXCEPTION.txt in this package.
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**
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** In addition, as a special exception, Trolltech, as the sole copyright
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** holder for Qt Designer, grants users of the Qt/Eclipse Integration
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** plug-in the right for the Qt/Eclipse Integration to link to
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** functionality provided by Qt Designer and its related libraries.
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**
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** Trolltech reserves all rights not expressly granted herein.
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**
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** Trolltech ASA (c) 2007
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**
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** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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**
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****************************************************************************/
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#ifndef QTSCRIPTEXTENSIONS_GLOBAL_H
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#define QTSCRIPTEXTENSIONS_GLOBAL_H
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#include <QtCore/QSharedData>
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#define DECLARE_SELF(Class, __fn__) \
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Class* self = qscriptvalue_cast<Class*>(ctx->thisObject()); \
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if (!self) { \
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return ctx->throwError(QScriptContext::TypeError, \
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QString::fromLatin1("%0.prototype.%1: this object is not a %0") \
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.arg(#Class).arg(#__fn__)); \
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}
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#define DECLARE_SELF2(Class, __fn__, __ret__) \
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Class* self = qscriptvalue_cast<Class*>(thisObject()); \
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if (!self) { \
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context()->throwError(QScriptContext::TypeError, \
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QString::fromLatin1("%0.prototype.%1: this object is not a %0") \
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.arg(#Class).arg(#__fn__)); \
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return __ret__; \
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}
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#define ADD_METHOD(__p__, __f__) \
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__p__.setProperty(#__f__, __p__.engine()->newFunction(__f__))
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#define ADD_GET_METHOD(__p__, __get__) \
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ADD_METHOD(__p__, __get__)
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#define ADD_GET_SET_METHODS(__p__, __get__, __set__) \
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do { \
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ADD_METHOD(__p__, __get__); \
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ADD_METHOD(__p__, __set__); \
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} while (0);
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#define ADD_CTOR_FUNCTION(__c__, __f__) ADD_METHOD(__c__, __f__)
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#define ADD_ENUM_VALUE(__c__, __ns__, __v__) \
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__c__.setProperty(#__v__, QScriptValue(__c__.engine(), __ns__::__v__))
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#define BEGIN_DECLARE_METHOD(Class, __mtd__) \
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static QScriptValue __mtd__(QScriptContext *ctx, QScriptEngine *eng) \
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{ \
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DECLARE_SELF(Class, __mtd__);
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#define END_DECLARE_METHOD \
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}
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#define DECLARE_GET_METHOD(Class, __get__) \
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BEGIN_DECLARE_METHOD(Class, __get__) { \
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return qScriptValueFromValue(eng, self->__get__()); \
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} END_DECLARE_METHOD
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#define DECLARE_SET_METHOD(Class, T, __set__) \
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BEGIN_DECLARE_METHOD(Class, __set__) { \
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self->__set__(qscriptvalue_cast<T>(ctx->argument(0))); \
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return eng->undefinedValue(); \
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} END_DECLARE_METHOD
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#define DECLARE_GET_SET_METHODS(Class, T, __get__, __set__) \
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DECLARE_GET_METHOD(Class, /*T,*/ __get__) \
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DECLARE_SET_METHOD(Class, T, __set__)
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#define DECLARE_SIMPLE_GET_METHOD(Class, __get__) \
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BEGIN_DECLARE_METHOD(Class, __get__) { \
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return QScriptValue(eng, self->__get__()); \
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} END_DECLARE_METHOD
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#define DECLARE_SIMPLE_SET_METHOD(Class, ToType, __set__) \
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BEGIN_DECLARE_METHOD(Class, __set__) { \
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self->__set__(ctx->argument(0).ToType()); \
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return eng->undefinedValue(); \
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} END_DECLARE_METHOD
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#define DECLARE_BOOLEAN_GET_METHOD(Class, __set__) \
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DECLARE_SIMPLE_GET_METHOD(Class, __set__)
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#define DECLARE_BOOLEAN_SET_METHOD(Class, __set__) \
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DECLARE_SIMPLE_SET_METHOD(Class, toBoolean, __set__)
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#define DECLARE_INT_GET_METHOD(Class, __set__) \
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DECLARE_SIMPLE_GET_METHOD(Class, __set__)
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#define DECLARE_INT_SET_METHOD(Class, __set__) \
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DECLARE_SIMPLE_SET_METHOD(Class, toInt32, __set__)
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#define DECLARE_NUMBER_GET_METHOD(Class, __set__) \
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DECLARE_SIMPLE_GET_METHOD(Class, __set__)
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#define DECLARE_NUMBER_SET_METHOD(Class, __set__) \
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DECLARE_SIMPLE_SET_METHOD(Class, toNumber, __set__)
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#define DECLARE_STRING_GET_METHOD(Class, __set__) \
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DECLARE_SIMPLE_GET_METHOD(Class, __set__)
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#define DECLARE_STRING_SET_METHOD(Class, __set__) \
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DECLARE_SIMPLE_SET_METHOD(Class, toString, __set__)
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#define DECLARE_QOBJECT_GET_METHOD(Class, __get__) \
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BEGIN_DECLARE_METHOD(Class, __get__) { \
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return eng->newQObject(self->__get__()); \
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} END_DECLARE_METHOD
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#define DECLARE_QOBJECT_SET_METHOD(Class, __set__) \
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DECLARE_SIMPLE_SET_METHOD(Class, toQObject, __set__)
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#define DECLARE_BOOLEAN_GET_SET_METHODS(Class, __get__, __set__) \
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DECLARE_BOOLEAN_GET_METHOD(Class, __get__) \
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DECLARE_BOOLEAN_SET_METHOD(Class, __set__)
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#define DECLARE_NUMBER_GET_SET_METHODS(Class, __get__, __set__) \
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DECLARE_NUMBER_GET_METHOD(Class, __get__) \
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DECLARE_NUMBER_SET_METHOD(Class, __set__)
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#define DECLARE_INT_GET_SET_METHODS(Class, __get__, __set__) \
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DECLARE_INT_GET_METHOD(Class, __get__) \
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DECLARE_INT_SET_METHOD(Class, __set__)
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#define DECLARE_STRING_GET_SET_METHODS(Class, __get__, __set__) \
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DECLARE_STRING_GET_METHOD(Class, __get__) \
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DECLARE_STRING_SET_METHOD(Class, __set__)
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#define DECLARE_QOBJECT_GET_SET_METHODS(Class, __get__, __set__) \
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DECLARE_QOBJECT_GET_METHOD(Class, __get__) \
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DECLARE_QOBJECT_SET_METHOD(Class, __set__)
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#define DECLARE_VOID_METHOD(Class, __fun__) \
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BEGIN_DECLARE_METHOD(Class, __fun__) { \
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self->__fun__(); \
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return eng->undefinedValue(); \
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} END_DECLARE_METHOD
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#define DECLARE_VOID_NUMBER_METHOD(Class, __fun__) \
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BEGIN_DECLARE_METHOD(Class, __fun__) { \
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self->__fun__(ctx->argument(0).toNumber()); \
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return eng->undefinedValue(); \
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} END_DECLARE_METHOD
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#define DECLARE_VOID_NUMBER_NUMBER_METHOD(Class, __fun__) \
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BEGIN_DECLARE_METHOD(Class, __fun__) { \
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self->__fun__(ctx->argument(0).toNumber(), ctx->argument(1).toNumber()); \
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return eng->undefinedValue(); \
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} END_DECLARE_METHOD
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#define DECLARE_VOID_1ARG_METHOD(Class, ArgType, __fun__) \
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BEGIN_DECLARE_METHOD(Class, __fun__) { \
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self->__fun__(qscriptvalue_cast<ArgType>(ctx->argument(0))); \
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return eng->undefinedValue(); \
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} END_DECLARE_METHOD
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#define DECLARE_BOOLEAN_1ARG_METHOD(Class, ArgType, __fun__) \
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BEGIN_DECLARE_METHOD(Class, __fun__) { \
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return QScriptValue(eng, self->__fun__(qscriptvalue_cast<ArgType>(ctx->argument(0)))); \
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} END_DECLARE_METHOD
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#define DECLARE_POINTER_METATYPE(T) \
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Q_DECLARE_METATYPE(T*) \
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Q_DECLARE_METATYPE(QScript::Pointer<T>::wrapped_pointer_type)
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namespace QScript
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{
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enum {
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UserOwnership = 1
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};
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template <typename T>
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class Pointer : public QSharedData
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{
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public:
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typedef T* pointer_type;
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typedef QExplicitlySharedDataPointer<Pointer<T> > wrapped_pointer_type;
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~Pointer()
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{
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if (!(m_flags & UserOwnership))
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delete m_value;
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}
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operator T*()
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{
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return m_value;
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}
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operator const T*() const
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{
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return m_value;
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}
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static wrapped_pointer_type create(T *value, uint flags = 0)
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{
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return wrapped_pointer_type(new Pointer(value, flags));
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}
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static QScriptValue toScriptValue(QScriptEngine *engine, T* const &source)
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{
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if (!source)
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return engine->nullValue();
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return engine->newVariant(qVariantFromValue(source));
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}
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static void fromScriptValue(const QScriptValue &value, T* &target)
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{
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if (value.isVariant()) {
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QVariant var = value.toVariant();
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if (qVariantCanConvert<T*>(var)) {
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target = qvariant_cast<T*>(var);
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} else if (qVariantCanConvert<wrapped_pointer_type>(var)) {
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target = qvariant_cast<wrapped_pointer_type>(var)->operator T*();
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} else {
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// look in prototype chain
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target = 0;
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int type = qMetaTypeId<T*>();
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int pointerType = qMetaTypeId<wrapped_pointer_type>();
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QScriptValue proto = value.prototype();
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while (proto.isObject() && proto.isVariant()) {
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int protoType = proto.toVariant().userType();
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if ((type == protoType) || (pointerType == protoType)) {
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QByteArray name = QMetaType::typeName(var.userType());
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if (name.startsWith("QScript::Pointer<")) {
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target = (*reinterpret_cast<wrapped_pointer_type*>(var.data()))->operator T*();
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break;
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} else {
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target = static_cast<T*>(var.data());
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break;
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}
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}
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proto = proto.prototype();
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}
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}
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} else if (value.isQObject()) {
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QObject *qobj = value.toQObject();
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QByteArray typeName = QMetaType::typeName(qMetaTypeId<T*>());
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target = reinterpret_cast<T*>(qobj->qt_metacast(typeName.left(typeName.size()-1)));
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} else {
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target = 0;
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}
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}
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uint flags() const
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{ return m_flags; }
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void setFlags(uint flags)
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{ m_flags = flags; }
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void unsetFlags(uint flags)
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{ m_flags &= ~flags; }
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protected:
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Pointer(T* value, uint flags)
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: m_flags(flags), m_value(value)
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{}
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private:
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uint m_flags;
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T* m_value;
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};
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template <typename T>
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int registerPointerMetaType(
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QScriptEngine *eng,
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const QScriptValue &prototype = QScriptValue(),
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T * /* dummy */ = 0
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)
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{
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QScriptValue (*mf)(QScriptEngine *, T* const &) = Pointer<T>::toScriptValue;
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void (*df)(const QScriptValue &, T* &) = Pointer<T>::fromScriptValue;
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const int id = qMetaTypeId<T*>();
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qScriptRegisterMetaType_helper(
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eng, id, reinterpret_cast<QScriptEngine::MarshalFunction>(mf),
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reinterpret_cast<QScriptEngine::DemarshalFunction>(df),
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prototype);
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eng->setDefaultPrototype(qMetaTypeId<typename Pointer<T>::wrapped_pointer_type>(), prototype);
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return id;
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}
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inline void maybeReleaseOwnership(const QScriptValue &value)
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{
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if (value.isVariant()) {
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QVariant var = value.toVariant();
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QByteArray name = QMetaType::typeName(var.userType());
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if (name.startsWith("QScript::Pointer<"))
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(*reinterpret_cast<Pointer<void*>::wrapped_pointer_type *>(var.data()))->setFlags(UserOwnership);
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}
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}
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inline void maybeTakeOwnership(const QScriptValue &value)
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{
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if (value.isVariant()) {
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QVariant var = value.toVariant();
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QByteArray name = QMetaType::typeName(var.userType());
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if (name.startsWith("QScript::Pointer<"))
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(*reinterpret_cast<Pointer<void*>::wrapped_pointer_type *>(var.data()))->unsetFlags(UserOwnership);
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}
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}
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template <class T>
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inline QScriptValue wrapPointer(QScriptEngine *eng, T *ptr, uint flags = 0)
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{
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return eng->newVariant(qVariantFromValue(Pointer<T>::create(ptr, flags)));
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}
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} // namespace QScript
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#ifdef QGRAPHICSITEM_H
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namespace QScript {
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template <class T>
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inline QScriptValue wrapGVPointer(QScriptEngine *eng, T *item)
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{
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uint flags = item->parentItem() ? UserOwnership : 0;
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return wrapPointer<T>(eng, item, flags);
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}
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} // namespace QScript
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#endif // QGRAPHICSITEM_H
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#endif // QTSCRIPTEXTENSIONS_GLOBAL_H
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