src/gui/image/qpixmapcache.h
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     1 /****************************************************************************
       
     2 **
       
     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
       
     4 ** All rights reserved.
       
     5 ** Contact: Nokia Corporation (qt-info@nokia.com)
       
     6 **
       
     7 ** This file is part of the QtGui module of the Qt Toolkit.
       
     8 **
       
     9 ** $QT_BEGIN_LICENSE:LGPL$
       
    10 ** No Commercial Usage
       
    11 ** This file contains pre-release code and may not be distributed.
       
    12 ** You may use this file in accordance with the terms and conditions
       
    13 ** contained in the Technology Preview License Agreement accompanying
       
    14 ** this package.
       
    15 **
       
    16 ** GNU Lesser General Public License Usage
       
    17 ** Alternatively, this file may be used under the terms of the GNU Lesser
       
    18 ** General Public License version 2.1 as published by the Free Software
       
    19 ** Foundation and appearing in the file LICENSE.LGPL included in the
       
    20 ** packaging of this file.  Please review the following information to
       
    21 ** ensure the GNU Lesser General Public License version 2.1 requirements
       
    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
       
    23 **
       
    24 ** In addition, as a special exception, Nokia gives you certain additional
       
    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception
       
    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
       
    27 **
       
    28 ** If you have questions regarding the use of this file, please contact
       
    29 ** Nokia at qt-info@nokia.com.
       
    30 **
       
    31 **
       
    32 **
       
    33 **
       
    34 **
       
    35 **
       
    36 **
       
    37 **
       
    38 ** $QT_END_LICENSE$
       
    39 **
       
    40 ****************************************************************************/
       
    41 
       
    42 #ifndef QPIXMAPCACHE_H
       
    43 #define QPIXMAPCACHE_H
       
    44 
       
    45 #include <QtGui/qpixmap.h>
       
    46 
       
    47 QT_BEGIN_HEADER
       
    48 
       
    49 QT_BEGIN_NAMESPACE
       
    50 
       
    51 QT_MODULE(Gui)
       
    52 
       
    53 class Q_GUI_EXPORT QPixmapCache
       
    54 {
       
    55 public:
       
    56     class KeyData;
       
    57     class Q_GUI_EXPORT Key
       
    58     {
       
    59     public:
       
    60         Key();
       
    61         Key(const Key &other);
       
    62         ~Key();
       
    63         bool operator ==(const Key &key) const;
       
    64         inline bool operator !=(const Key &key) const
       
    65         { return !operator==(key); }
       
    66         Key &operator =(const Key &other);
       
    67 
       
    68     private:
       
    69         KeyData *d;
       
    70         friend class QPMCache;
       
    71         friend class QPixmapCache;
       
    72     };
       
    73 
       
    74     static int cacheLimit();
       
    75     static void setCacheLimit(int);
       
    76     static QPixmap *find(const QString &key);
       
    77     static bool find(const QString &key, QPixmap &pixmap);
       
    78     static bool find(const QString &key, QPixmap *pixmap);
       
    79     static bool find(const Key &key, QPixmap *pixmap);
       
    80     static bool insert(const QString &key, const QPixmap &pixmap);
       
    81     static Key insert(const QPixmap &pixmap);
       
    82     static bool replace(const Key &key, const QPixmap &pixmap);
       
    83     static void remove(const QString &key);
       
    84     static void remove(const Key &key);
       
    85     static void clear();
       
    86 };
       
    87 
       
    88 QT_END_NAMESPACE
       
    89 
       
    90 QT_END_HEADER
       
    91 
       
    92 #endif // QPIXMAPCACHE_H