src/gui/image/qpixmapdata_p.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 QPIXMAPDATA_P_H
       
    43 #define QPIXMAPDATA_P_H
       
    44 
       
    45 //
       
    46 //  W A R N I N G
       
    47 //  -------------
       
    48 //
       
    49 // This file is not part of the Qt API.  It exists purely as an
       
    50 // implementation detail.  This header file may change from version to
       
    51 // version without notice, or even be removed.
       
    52 //
       
    53 // We mean it.
       
    54 //
       
    55 
       
    56 #include <QtGui/qpixmap.h>
       
    57 #include <QtCore/qatomic.h>
       
    58 
       
    59 QT_BEGIN_NAMESPACE
       
    60 
       
    61 class Q_GUI_EXPORT QPixmapData
       
    62 {
       
    63 public:
       
    64     enum PixelType {
       
    65         // WARNING: Do not change the first two
       
    66         // Must match QPixmap::Type
       
    67         PixmapType, BitmapType
       
    68     };
       
    69 #if defined(Q_OS_SYMBIAN)
       
    70     enum NativeType {
       
    71         FbsBitmap,
       
    72         SgImage
       
    73     };
       
    74 #endif
       
    75     enum ClassId { RasterClass, X11Class, MacClass, DirectFBClass,
       
    76                    OpenGLClass, OpenVGClass, CustomClass = 1024 };
       
    77 
       
    78     QPixmapData(PixelType pixelType, int classId);
       
    79     virtual ~QPixmapData();
       
    80 
       
    81     virtual QPixmapData *createCompatiblePixmapData() const;
       
    82 
       
    83     virtual void resize(int width, int height) = 0;
       
    84     virtual void fromImage(const QImage &image,
       
    85                            Qt::ImageConversionFlags flags) = 0;
       
    86 
       
    87     virtual bool fromFile(const QString &filename, const char *format,
       
    88                           Qt::ImageConversionFlags flags);
       
    89     virtual bool fromData(const uchar *buffer, uint len, const char *format,
       
    90                           Qt::ImageConversionFlags flags);
       
    91 
       
    92     virtual void copy(const QPixmapData *data, const QRect &rect);
       
    93     virtual bool scroll(int dx, int dy, const QRect &rect);
       
    94 
       
    95     virtual int metric(QPaintDevice::PaintDeviceMetric metric) const = 0;
       
    96     virtual void fill(const QColor &color) = 0;
       
    97     virtual QBitmap mask() const;
       
    98     virtual void setMask(const QBitmap &mask);
       
    99     virtual bool hasAlphaChannel() const = 0;
       
   100     virtual QPixmap transformed(const QTransform &matrix,
       
   101                                 Qt::TransformationMode mode) const;
       
   102     virtual void setAlphaChannel(const QPixmap &alphaChannel);
       
   103     virtual QPixmap alphaChannel() const;
       
   104     virtual QImage toImage() const = 0;
       
   105     virtual QPaintEngine* paintEngine() const = 0;
       
   106 
       
   107     inline int serialNumber() const { return ser_no; }
       
   108 
       
   109     inline PixelType pixelType() const { return type; }
       
   110     inline ClassId classId() const { return static_cast<ClassId>(id); }
       
   111 
       
   112     virtual QImage* buffer();
       
   113 
       
   114     inline int width() const { return w; }
       
   115     inline int height() const { return h; }
       
   116     inline int numColors() const { return metric(QPaintDevice::PdmNumColors); }
       
   117     inline int depth() const { return d; }
       
   118     inline bool isNull() const { return is_null; }
       
   119 
       
   120 #if defined(Q_OS_SYMBIAN)
       
   121     virtual void* toNativeType(NativeType type);
       
   122     virtual void fromNativeType(void* pixmap, NativeType type);
       
   123 #endif
       
   124 
       
   125 protected:
       
   126     void setSerialNumber(int serNo);
       
   127     int w;
       
   128     int h;
       
   129     int d;
       
   130     bool is_null;
       
   131 
       
   132 private:
       
   133     friend class QPixmap;
       
   134     friend class QGLContextPrivate;
       
   135     friend class QX11PixmapData;
       
   136     friend class QS60PixmapData;
       
   137     friend class QGLTextureCache; //Needs to check the reference count
       
   138     friend class QExplicitlySharedDataPointer<QPixmapData>;
       
   139     friend bool qt_createEGLSurfaceForPixmap(QPixmapData*, bool); // Needs to set is_cached
       
   140 
       
   141     QAtomicInt ref;
       
   142     int detach_no;
       
   143 
       
   144     PixelType type;
       
   145     int id;
       
   146     int ser_no;
       
   147     uint is_cached;
       
   148 };
       
   149 
       
   150 #  define QT_XFORM_TYPE_MSBFIRST 0
       
   151 #  define QT_XFORM_TYPE_LSBFIRST 1
       
   152 #  if defined(Q_WS_WIN)
       
   153 #    define QT_XFORM_TYPE_WINDOWSPIXMAP 2
       
   154 #  endif
       
   155 extern bool qt_xForm_helper(const QTransform&, int, int, int, uchar*, int, int, int, const uchar*, int, int, int);
       
   156 
       
   157 QT_END_NAMESPACE
       
   158 
       
   159 #endif // QPIXMAPDATA_P_H