Add Qt3 development HEAD version

1 files changed, 131 insertions, 0 deletions

diff --git a/src/tools/qgcache.h b/src/tools/qgcache.h
new file mode 100644
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--- /dev/null
+++ b/src/tools/qgcache.h
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+/****************************************************************************
+**
+** Definition of QGCache and QGCacheIterator classes
+**
+** Created : 950208
+**
+** Copyright (C) 1992-2008 Trolltech ASA.  All rights reserved.
+**
+** This file is part of the tools module of the Qt 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 Qt 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.QPL
+** included in the packaging of this file.  Licensees holding valid Qt
+** Commercial licenses may use this file in accordance with the Qt
+** 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.
+**
+**********************************************************************/
+
+#ifndef QGCACHE_H
+#define QGCACHE_H
+
+#ifndef QT_H
+#include "qptrcollection.h"
+#include "qglist.h"
+#include "qgdict.h"
+#endif // QT_H
+
+
+class QCList;					// internal classes
+class QCListIt;
+class QCDict;
+
+
+class Q_EXPORT QGCache : public QPtrCollection	// generic LRU cache
+{
+friend class QGCacheIterator;
+protected:
+    enum KeyType { StringKey, AsciiKey, IntKey, PtrKey };
+      // identical to QGDict's, but PtrKey is not used at the moment
+
+    QGCache( int maxCost, uint size, KeyType kt, bool caseSensitive,
+	     bool copyKeys );
+    QGCache( const QGCache & );			// not allowed, calls fatal()
+   ~QGCache();
+    QGCache &operator=( const QGCache & );	// not allowed, calls fatal()
+
+    uint    count()	const;
+    uint    size()	const;
+    int	    maxCost()	const	{ return mCost; }
+    int	    totalCost() const	{ return tCost; }
+    void    setMaxCost( int maxCost );
+    void    clear();
+
+    bool    insert_string( const QString &key, QPtrCollection::Item,
+			   int cost, int priority );
+    bool    insert_other( const char *key, QPtrCollection::Item,
+			  int cost, int priority );
+    bool    remove_string( const QString &key );
+    bool    remove_other( const char *key );
+    QPtrCollection::Item take_string( const QString &key );
+    QPtrCollection::Item take_other( const char *key );
+
+    QPtrCollection::Item find_string( const QString &key, bool ref=TRUE ) const;
+    QPtrCollection::Item find_other( const char *key, bool ref=TRUE ) const;
+
+    void    statistics() const;
+
+private:
+    bool    makeRoomFor( int cost, int priority = -1 );
+    KeyType keytype;
+    QCList *lruList;
+    QCDict *dict;
+    int	    mCost;
+    int	    tCost;
+    bool    copyk;
+};
+
+
+class Q_EXPORT QGCacheIterator			// generic cache iterator
+{
+protected:
+    QGCacheIterator( const QGCache & );
+    QGCacheIterator( const QGCacheIterator & );
+   ~QGCacheIterator();
+    QGCacheIterator &operator=( const QGCacheIterator & );
+
+    uint	      count()   const;
+    bool	      atFirst() const;
+    bool	      atLast()  const;
+    QPtrCollection::Item toFirst();
+    QPtrCollection::Item toLast();
+
+    QPtrCollection::Item get() const;
+    QString	      getKeyString() const;
+    const char       *getKeyAscii()  const;
+    long	      getKeyInt()    const;
+
+    QPtrCollection::Item operator()();
+    QPtrCollection::Item operator++();
+    QPtrCollection::Item operator+=( uint );
+    QPtrCollection::Item operator--();
+    QPtrCollection::Item operator-=( uint );
+
+protected:
+    QCListIt *it;				// iterator on cache list
+};
+
+
+#endif // QGCACHE_H