qpicture.h
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上传日期:2022-06-22
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- /****************************************************************************
- **
- ** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
- ** Contact: Qt Software Information (qt-info@nokia.com)
- **
- ** This file is part of the QtGui module of the Qt Toolkit.
- **
- ** Commercial Usage
- ** Licensees holding valid Qt Commercial licenses may use this file in
- ** accordance with the Qt Commercial License Agreement provided with the
- ** Software or, alternatively, in accordance with the terms contained in
- ** a written agreement between you and Nokia.
- **
- **
- ** GNU General Public License Usage
- ** Alternatively, 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 file LICENSE.GPL included in
- ** the packaging of this file. Please review the following information
- ** to ensure GNU General Public Licensing requirements will be met:
- ** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
- ** http://www.gnu.org/copyleft/gpl.html. In addition, as a special
- ** exception, Nokia gives you certain additional rights. These rights
- ** are described in the Nokia Qt GPL Exception version 1.3, included in
- ** the file GPL_EXCEPTION.txt in this package.
- **
- ** Qt for Windows(R) Licensees
- ** As a special exception, Nokia, as the sole copyright holder for Qt
- ** Designer, grants users of the Qt/Eclipse Integration plug-in the
- ** right for the Qt/Eclipse Integration to link to functionality
- ** provided by Qt Designer and its related libraries.
- **
- ** If you are unsure which license is appropriate for your use, please
- ** contact the sales department at qt-sales@nokia.com.
- **
- ****************************************************************************/
- #ifndef QPICTURE_H
- #define QPICTURE_H
- #include <QtGui/qpaintdevice.h>
- #include <QtCore/qstringlist.h>
- QT_BEGIN_HEADER
- QT_BEGIN_NAMESPACE
- QT_MODULE(Gui)
- #ifndef QT_NO_PICTURE
- class QPicturePrivate;
- class Q_GUI_EXPORT QPicture : public QPaintDevice
- {
- Q_DECLARE_PRIVATE(QPicture)
- public:
- explicit QPicture(int formatVersion = -1);
- QPicture(const QPicture &);
- ~QPicture();
- bool isNull() const;
- int devType() const;
- uint size() const;
- const char* data() const;
- virtual void setData(const char* data, uint size);
- bool play(QPainter *p);
- bool load(QIODevice *dev, const char *format = 0);
- bool load(const QString &fileName, const char *format = 0);
- bool save(QIODevice *dev, const char *format = 0);
- bool save(const QString &fileName, const char *format = 0);
- QRect boundingRect() const;
- void setBoundingRect(const QRect &r);
- QPicture& operator=(const QPicture &p);
- void detach();
- bool isDetached() const;
- friend Q_GUI_EXPORT QDataStream &operator<<(QDataStream &in, const QPicture &p);
- friend Q_GUI_EXPORT QDataStream &operator>>(QDataStream &in, QPicture &p);
- static const char* pictureFormat(const QString &fileName);
- static QList<QByteArray> inputFormats();
- static QList<QByteArray> outputFormats();
- static QStringList inputFormatList();
- static QStringList outputFormatList();
- QPaintEngine *paintEngine() const;
- protected:
- QPicture(QPicturePrivate &data);
- int metric(PaintDeviceMetric m) const;
- #ifdef QT3_SUPPORT
- inline QT3_SUPPORT QPicture copy() const { QPicture p(*this); p.detach(); return p; }
- #endif
- private:
- bool exec(QPainter *p, QDataStream &ds, int i);
- void detach_helper();
- QPicturePrivate *d_ptr;
- friend class QPicturePaintEngine;
- friend class Q3Picture;
- friend class QAlphaPaintEngine;
- friend class QPreviewPaintEngine;
- public:
- typedef QPicturePrivate* DataPtr;
- inline DataPtr &data_ptr() { return d_ptr; }
- };
- Q_DECLARE_SHARED(QPicture)
- #ifndef QT_NO_PICTUREIO
- class QIODevice;
- class QPictureIO;
- typedef void (*picture_io_handler)(QPictureIO *); // picture IO handler
- struct QPictureIOData;
- class Q_GUI_EXPORT QPictureIO
- {
- public:
- QPictureIO();
- QPictureIO(QIODevice *ioDevice, const char *format);
- QPictureIO(const QString &fileName, const char *format);
- ~QPictureIO();
- const QPicture &picture() const;
- int status() const;
- const char *format() const;
- QIODevice *ioDevice() const;
- QString fileName() const;
- int quality() const;
- QString description() const;
- const char *parameters() const;
- float gamma() const;
- void setPicture(const QPicture &);
- void setStatus(int);
- void setFormat(const char *);
- void setIODevice(QIODevice *);
- void setFileName(const QString &);
- void setQuality(int);
- void setDescription(const QString &);
- void setParameters(const char *);
- void setGamma(float);
- bool read();
- bool write();
- static QByteArray pictureFormat(const QString &fileName);
- static QByteArray pictureFormat(QIODevice *);
- static QList<QByteArray> inputFormats();
- static QList<QByteArray> outputFormats();
- static void defineIOHandler(const char *format,
- const char *header,
- const char *flags,
- picture_io_handler read_picture,
- picture_io_handler write_picture);
- private:
- Q_DISABLE_COPY(QPictureIO)
- void init();
- QPictureIOData *d;
- };
- #endif //QT_NO_PICTUREIO
- /*****************************************************************************
- QPicture stream functions
- *****************************************************************************/
- Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QPicture &);
- Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QPicture &);
- #endif // QT_NO_PICTURE
- QT_END_NAMESPACE
- QT_END_HEADER
- #endif // QPICTURE_H