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/*
For general Scribus (>=1.3.2) copyright and licensing information please refer
to the COPYING file provided with the program. Following this notice may exist
a copyright and/or license notice that predates the release of Scribus 1.3.2
for which a new license (GPL+exception) is in place.
*/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#ifndef STYLECONTEXT_H
#define STYLECONTEXT_H
#include <cassert>
#include <QString>
#include <QList>
#include "scribusapi.h"
#include "observable.h"
class Style;
/**
Style inheritance works with names. A StyleContext finds the Style to a given name.
If there are changes to the Styles contained in a StyleContext, you have to call
invalidate() to increase the version info. Styles using this StyleContext will then
update their cached values the next time they are used.
*/
class SCRIBUS_API StyleContext : public Observable<StyleContext> {
public:
StyleContext()
: m_version(0), m_cnt(0)
{
// qDebug() << QString("constr. %1 /%2").arg(reinterpret_cast<uint>(this),16).arg(m_level);
}
StyleContext(const StyleContext& o)
: m_version(o.m_version), m_cnt(0)
{
// qDebug() << QString("constr. cp %1 /%2").arg(reinterpret_cast<uint>(this),16).arg(m_level);
}
StyleContext& operator= (const StyleContext& o)
{
m_version = o.m_version;
m_cnt = 0;
return *this;
}
int version() const { return m_version; }
virtual bool contextContained(const StyleContext* context) const { return context == this; }
virtual bool checkConsistency() const { return true; }
virtual const Style* resolve(const QString& name) const = 0;
virtual ~StyleContext()
{
// qDebug(QString("destr. %1").arg(reinterpret_cast<uint>(this),16));
}
void invalidate();
bool connect(QObject* receiver, const char *member ) const;
bool disconnect(QObject* receiver, const char *member=0 ) const;
protected:
int m_version;
mutable int m_cnt;
};
Q_DECLARE_METATYPE(StyleContext*);
#endif
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