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Diffstat (limited to 'tqtinterface/qt4/src/kernel/tqsignal.cpp')
| -rw-r--r-- | tqtinterface/qt4/src/kernel/tqsignal.cpp | 493 |
1 files changed, 493 insertions, 0 deletions
diff --git a/tqtinterface/qt4/src/kernel/tqsignal.cpp b/tqtinterface/qt4/src/kernel/tqsignal.cpp new file mode 100644 index 0000000..262164a --- /dev/null +++ b/tqtinterface/qt4/src/kernel/tqsignal.cpp @@ -0,0 +1,493 @@ +#include "tqtglobaldefines.h" + +#ifdef USE_QT4 + +/**************************************************************************** +** +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the Qt3Support module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial Usage +** Licensees holding valid Qt Commercial licenses may use this file in +** accordance with the Qt Commercial License Agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Nokia. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "tqsignal.h" +#include "Qt/qmetaobject.h" +#include "Qt/qpointer.h" +#include "tqcstring.h" + +QT_BEGIN_NAMESPACE + +/*! + \class TQSignal + \brief The TQSignal class can be used to send signals for classes + that don't inherit TQT_BASE_OBJECT_NAME. + + \compat + + If you want to send signals from a class that does not inherit + TQT_BASE_OBJECT_NAME, you can create an internal TQSignal object to emit the + signal. You must also provide a function that connects the signal + to an outside object slot. This is how we used to implement + signals in Qt 3's QMenuData class, which was not a TQT_BASE_OBJECT_NAME. In Qt + 4, menus contain actions, which are TQT_BASE_OBJECT_NAMEs. + + In general, we recommend inheriting TQT_BASE_OBJECT_NAME instead. TQT_BASE_OBJECT_NAME + provides much more functionality. + + You can set a single QVariant parameter for the signal with + setValue(). + + Note that TQT_BASE_OBJECT_NAME is a \e private base class of TQSignal, i.e. you + cannot call any TQT_BASE_OBJECT_NAME member functions from a TQSignal object. + + Example: + \snippet doc/src/snippets/code/src_qt3support_tools_q3signal.cpp 0 +*/ + +/*! + Constructs a signal object called \a name, with the parent object + \a parent. These arguments are passed directly to TQT_BASE_OBJECT_NAME. +*/ + +TQSignal::TQSignal(TQT_BASE_OBJECT_NAME *parent, const char *name) + : TQT_BASE_OBJECT_NAME(parent) +{ + setObjectName(QString::fromAscii(name)); +#ifndef QT_NO_VARIANT + val = 0; +#endif +} + +/*! + Destroys the signal. All connections are removed, as is the case + with all TQT_BASE_OBJECT_NAMEs. +*/ +TQSignal::~TQSignal() +{ +} +#ifndef QT_NO_VARIANT +// Returns true if it matches ".+(.*int.*" +static inline bool intSignature(const char *member) +{ + TQCString s(member); + int p = s.tqfind('('); + return p > 0 && p < s.tqfindRev("int"); +} +#endif +/*! + Connects the signal to \a member in object \a receiver. + Returns true if the connection is successful. + + \sa disconnect(), TQT_BASE_OBJECT_NAME::connect() +*/ + +bool TQSignal::connect(const TQT_BASE_OBJECT_NAME *receiver, const char *member) +{ +#ifndef QT_NO_VARIANT + if (intSignature(member)) +#endif + return TQT_BASE_OBJECT_NAME::connect((TQT_BASE_OBJECT_NAME *)this, TQT_SIGNAL(intSignal(int)), receiver, member); +#ifndef QT_NO_VARIANT + return TQT_BASE_OBJECT_NAME::connect((TQT_BASE_OBJECT_NAME *)this, TQT_SIGNAL(signal(QVariant)), + receiver, member); +#endif +} + +/*! + Disonnects the signal from \a member in object \a receiver. + Returns true if the connection existed and the disconnect + was successful. + + \sa connect(), TQT_BASE_OBJECT_NAME::disconnect() +*/ + +bool TQSignal::disconnect(const TQT_BASE_OBJECT_NAME *receiver, const char *member) +{ + if (!member) + return TQT_BASE_OBJECT_NAME::disconnect((TQT_BASE_OBJECT_NAME *)this, 0, receiver, member); +#ifndef QT_NO_VARIANT + if (intSignature(member)) +#endif + return TQT_BASE_OBJECT_NAME::disconnect((TQT_BASE_OBJECT_NAME *)this, TQT_SIGNAL(intSignal(int)), receiver, member); +#ifndef QT_NO_VARIANT + return TQT_BASE_OBJECT_NAME::disconnect((TQT_BASE_OBJECT_NAME *)this, TQT_SIGNAL(signal(QVariant)), + receiver, member); +#endif +} + + +/*! + \fn bool TQSignal::isBlocked() const + \obsolete + Returns true if the signal is blocked, or false if it is not blocked. + + The signal is not blocked by default. + + \sa block(), TQT_BASE_OBJECT_NAME::signalsBlocked() +*/ + +/*! + \fn void TQSignal::block(bool b) + \obsolete + Blocks the signal if \a b is true, or unblocks the signal if \a b is false. + + An activated signal disappears into hyperspace if it is blocked. + + \sa isBlocked(), activate(), TQT_BASE_OBJECT_NAME::blockSignals() +*/ + + +/*! + \fn void TQSignal::activate() + + Emits the signal. If the platform supports QVariant and a + parameter has been set with setValue(), this value is passed in + the signal. +*/ +void TQSignal::activate() +{ +#ifndef QT_NO_VARIANT + /* Create this TQGuardedPtr on this, if we get destroyed after the intSignal (but before the variant signal) + we cannot just emit the signal (because val has been destroyed already) */ + QPointer<TQSignal> me = this; + if(me) + emit intSignal(val.toInt()); + if(me) + emit signal(val); +#else + emit intSignal(0); +#endif +} + +#ifndef QT_NO_VARIANT +/*! + Sets the signal's parameter to \a value +*/ +void TQSignal::setValue(const QVariant &value) +{ + val = value; +} + +/*! + Returns the signal's parameter +*/ +QVariant TQSignal::value() const +{ + return val; +} +/*! \fn void TQSignal::signal(const QVariant &) + \internal +*/ +/*! \fn void TQSignal::intSignal(int) + \internal +*/ + +/*! \obsolete */ +void TQSignal::setParameter(int value) +{ + val = value; +} + +/*! \obsolete */ +int TQSignal::parameter() const +{ + return val.toInt(); +} +#endif //QT_NO_VARIANT + +QT_END_NAMESPACE + +#else // USE_QT4 + +/**************************************************************************** +** +** Implementation of TQSignal class +** +** Created : 941201 +** +** Copyright (C) 2010 Timothy Pearson and (C) 1992-2008 Trolltech ASA. +** +** This file is part of the kernel module of the TQt GUI Toolkit. +** +** This file may be used under the terms of the GNU General +** Public License versions 2.0 or 3.0 as published by the Free +** Software Foundation and appearing in the files LICENSE.GPL2 +** and LICENSE.GPL3 included in the packaging of this file. +** Alternatively you may (at your option) use any later version +** of the GNU General Public License if such license has been +** publicly approved by Trolltech ASA (or its successors, if any) +** and the KDE Free TQt Foundation. +** +** Please review the following information to ensure GNU General +** Public Licensing requirements will be met: +** http://trolltech.com/products/qt/licenses/licensing/opensource/. +** If you are unsure which license is appropriate for your use, please +** review the following information: +** http://trolltech.com/products/qt/licenses/licensing/licensingoverview +** or contact the sales department at sales@trolltech.com. +** +** This file may be used under the terms of the Q Public License as +** defined by Trolltech ASA and appearing in the file LICENSE.TQPL +** included in the packaging of this file. Licensees holding valid TQt +** Commercial licenses may use this file in accordance with the TQt +** Commercial License Agreement provided with the Software. +** +** This file is provided "AS IS" with NO WARRANTY OF ANY KIND, +** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted +** herein. +** +**********************************************************************/ + +#include "tqsignal.h" +#include "tqmetaobject.h" +#include "tqguardedptr.h" + +/*! + \class TQSignal tqsignal.h + \brief The TQSignal class can be used to send Q_SIGNALS for classes + that don't inherit TQObject. + + \ingroup io + \ingroup misc + + If you want to send Q_SIGNALS from a class that does not inherit + TQObject, you can create an internal TQSignal object to emit the + signal. You must also provide a function that connects the signal + to an outside object slot. This is how we have implemented + Q_SIGNALS in the TQMenuData class, which is not a TQObject. + + In general, we recommend inheriting TQObject instead. TQObject + provides much more functionality. + + You can set a single TQVariant parameter for the signal with + setValue(). + + Note that TQObject is a \e private base class of TQSignal, i.e. you + cannot call any TQObject member functions from a TQSignal object. + + Example: + \code + #include <tqsignal.h> + + class MyClass + { + public: + MyClass(); + ~MyClass(); + + void doSomething(); + + void connect( TQObject *receiver, const char *member ); + + private: + TQSignal *sig; + }; + + MyClass::MyClass() + { + sig = new TQSignal; + } + + MyClass::~MyClass() + { + delete sig; + } + + void MyClass::doSomething() + { + // ... does something + sig->activate(); // emits the signal + } + + void MyClass::connect( TQObject *receiver, const char *member ) + { + sig->connect( receiver, member ); + } + \endcode +*/ + +/*! + Constructs a signal object called \a name, with the tqparent object + \a tqparent. These arguments are passed directly to TQObject. +*/ + +TQSignal::TQSignal( TQObject *tqparent, const char *name ) + : TQObject( tqparent, name ) +{ + isSignal = TRUE; +#ifndef TQT_NO_VARIANT + val = 0; +#endif +} + +/*! + Destroys the signal. All connections are removed, as is the case + with all TQObjects. +*/ +TQSignal::~TQSignal() +{ +} +#ifndef TQT_NO_VARIANT +// Returns TRUE if it matches ".+(.*int.*" +static inline bool intSignature( const char *member ) +{ + TQCString s( member ); + int p = s.tqfind( '(' ); + return p > 0 && p < s.tqfindRev( "int" ); +} +#endif +/*! + Connects the signal to \a member in object \a receiver. + + \sa disconnect(), TQObject::connect() +*/ + +bool TQSignal::connect( const TQT_BASE_OBJECT_NAME *receiver, const char *member ) +{ +#ifndef TQT_NO_VARIANT + if ( intSignature( member ) ) +#endif + return TQObject::connect( (TQT_BASE_OBJECT_NAME *)this, TQT_SIGNAL(intSignal(int)), receiver, member ); +#ifndef TQT_NO_VARIANT + return TQObject::connect( (TQT_BASE_OBJECT_NAME *)this, TQT_SIGNAL(signal(const TQVariant&)), + receiver, member ); +#endif +} + +/*! + Disonnects the signal from \a member in object \a receiver. + + \sa connect(), TQObject::disconnect() +*/ + +bool TQSignal::disconnect( const TQT_BASE_OBJECT_NAME *receiver, const char *member ) +{ + if (!member) + return TQObject::disconnect( (TQT_BASE_OBJECT_NAME *)this, 0, receiver, member); +#ifndef TQT_NO_VARIANT + if ( intSignature( member ) ) +#endif + return TQObject::disconnect( (TQT_BASE_OBJECT_NAME *)this, TQT_SIGNAL(intSignal(int)), receiver, member ); +#ifndef TQT_NO_VARIANT + return TQObject::disconnect( (TQT_BASE_OBJECT_NAME *)this, TQT_SIGNAL(signal(const TQVariant&)), + receiver, member ); +#endif +} + + +/*! + \fn bool TQSignal::isBlocked() const + \obsolete + Returns TRUE if the signal is blocked, or FALSE if it is not blocked. + + The signal is not blocked by default. + + \sa block(), TQObject::tqsignalsBlocked() +*/ + +/*! + \fn void TQSignal::block( bool b ) + \obsolete + Blocks the signal if \a b is TRUE, or unblocks the signal if \a b is FALSE. + + An activated signal disappears into hyperspace if it is blocked. + + \sa isBlocked(), activate(), TQObject::blockSignals() +*/ + + +/*! + \fn void TQSignal::activate() + + Emits the signal. If the platform supports TQVariant and a + parameter has been set with setValue(), this value is passed in + the signal. +*/ +void TQSignal::activate() +{ +#ifndef TQT_NO_VARIANT + /* Create this TQGuardedPtr on this, if we get destroyed after the intSignal (but before the variant signal) + we cannot just emit the signal (because val has been destroyed already) */ + TQGuardedPtr<TQSignal> me = this; + if( me ) + emit intSignal( val.toInt() ); + if( me ) + emit signal( val ); +#else + emit intSignal(0); +#endif +} + +#ifndef TQT_NO_VARIANT +/*! + Sets the signal's parameter to \a value +*/ +void TQSignal::setValue( const TQVariant &value ) +{ + val = value; +} + +/*! + Returns the signal's parameter +*/ +TQVariant TQSignal::value() const +{ + return val; +} +/*! \fn void TQSignal::signal( const TQVariant & ) + \internal +*/ +/*! \fn void TQSignal::intSignal( int ) + \internal +*/ + +#ifndef TQT_NO_COMPAT +/*! \obsolete */ +void TQSignal::setParameter( int value ) +{ + val = value; +} + +/*! \obsolete */ +int TQSignal::parameter() const +{ + return val.toInt(); +} +#endif +#endif //TQT_NO_VARIANT + +#endif // USE_QT4
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