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 QPICTURE_H

    43 #define QPICTURE_H

    44 

    45 #include <QtCore/qstringlist.h>

    46 #include <QtCore/qsharedpointer.h>

    47 #include <QtGui/qpaintdevice.h>

    48 

    49 QT_BEGIN_HEADER

    50 

    51 QT_BEGIN_NAMESPACE

    52 

    53 QT_MODULE(Gui)

    54 

    55 #ifndef QT_NO_PICTURE

    56 

    57 class QPicturePrivate;

    58 class Q_GUI_EXPORT QPicture : public QPaintDevice

    59 {

    60     Q_DECLARE_PRIVATE(QPicture)

    61 public:

    62     explicit QPicture(int formatVersion = -1);

    63     QPicture(const QPicture &);

    64     ~QPicture();

    65 

    66     bool isNull() const;

    67 

    68     int devType() const;

    69     uint size() const;

    70     const char* data() const;

    71     virtual void setData(const char* data, uint size);

    72 

    73     bool play(QPainter *p);

    74 

    75     bool load(QIODevice *dev, const char *format = 0);

    76     bool load(const QString &fileName, const char *format = 0);

    77     bool save(QIODevice *dev, const char *format = 0);

    78     bool save(const QString &fileName, const char *format = 0);

    79 

    80     QRect boundingRect() const;

    81     void setBoundingRect(const QRect &r);

    82 

    83     QPicture& operator=(const QPicture &p);

    84     void detach();

    85     bool isDetached() const;

    86 

    87     friend Q_GUI_EXPORT QDataStream &operator<<(QDataStream &in, const QPicture &p);

    88     friend Q_GUI_EXPORT QDataStream &operator>>(QDataStream &in, QPicture &p);

    89 

    90     static const char* pictureFormat(const QString &fileName);

    91     static QList<QByteArray> inputFormats();

    92     static QList<QByteArray> outputFormats();

    93     static QStringList inputFormatList();

    94     static QStringList outputFormatList();

    95 

    96     QPaintEngine *paintEngine() const;

    97 

    98 protected:

    99     QPicture(QPicturePrivate &data);

   100 

   101     int metric(PaintDeviceMetric m) const;

   102 #ifdef QT3_SUPPORT

   103     inline QT3_SUPPORT QPicture copy() const { QPicture p(*this); p.detach(); return p; }

   104 #endif

   105 

   106 private:

   107     bool exec(QPainter *p, QDataStream &ds, int i);

   108     void detach_helper();

   109 

   110     QExplicitlySharedDataPointer<QPicturePrivate> d_ptr;

   111     friend class QPicturePaintEngine;

   112     friend class Q3Picture;

   113     friend class QAlphaPaintEngine;

   114     friend class QPreviewPaintEngine;

   115 

   116 public:

   117     typedef QExplicitlySharedDataPointer<QPicturePrivate> DataPtr;

   118     inline DataPtr &data_ptr() { return d_ptr; }

   119 };

   120 

   121 Q_DECLARE_SHARED(QPicture)

   122 

   123 

   124 #ifndef QT_NO_PICTUREIO

   125 class QIODevice;

   126 class QPictureIO;

   127 typedef void (*picture_io_handler)(QPictureIO *); // picture IO handler

   128 

   129 struct QPictureIOData;

   130 

   131 class Q_GUI_EXPORT QPictureIO

   132 {

   133 public:

   134     QPictureIO();

   135     QPictureIO(QIODevice *ioDevice, const char *format);

   136     QPictureIO(const QString &fileName, const char *format);

   137     ~QPictureIO();

   138 

   139     const QPicture &picture() const;

   140     int status() const;

   141     const char *format() const;

   142     QIODevice *ioDevice() const;

   143     QString fileName() const;

   144     int quality() const;

   145     QString description() const;

   146     const char *parameters() const;

   147     float gamma() const;

   148 

   149     void setPicture(const QPicture &);

   150     void setStatus(int);

   151     void setFormat(const char *);

   152     void setIODevice(QIODevice *);

   153     void setFileName(const QString &);

   154     void setQuality(int);

   155     void setDescription(const QString &);

   156     void setParameters(const char *);

   157     void setGamma(float);

   158 

   159     bool read();

   160     bool write();

   161 

   162     static QByteArray pictureFormat(const QString &fileName);

   163     static QByteArray pictureFormat(QIODevice *);

   164     static QList<QByteArray> inputFormats();

   165     static QList<QByteArray> outputFormats();

   166 

   167     static void defineIOHandler(const char *format,

   168                                 const char *header,

   169                                 const char *flags,

   170                                 picture_io_handler read_picture,

   171                                 picture_io_handler write_picture);

   172 

   173 private:

   174     Q_DISABLE_COPY(QPictureIO)

   175 

   176     void init();

   177 

   178     QPictureIOData *d;

   179 };

   180 

   181 #endif //QT_NO_PICTUREIO

   182 

   183 

   184 /*****************************************************************************

   185   QPicture stream functions

   186  *****************************************************************************/

   187 

   188 #ifndef QT_NO_DATASTREAM

   189 Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QPicture &);

   190 Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QPicture &);

   191 #endif

   192 

   193 #endif // QT_NO_PICTURE

   194 

   195 QT_END_NAMESPACE

   196 

   197 QT_END_HEADER

   198 

   199 #endif // QPICTURE_H