1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2016 The Qt Company Ltd. 4 ** Contact: https://www.qt.io/licensing/ 5 ** 6 ** This file is part of the QtGui module of the Qt Toolkit. 7 ** 8 ** $QT_BEGIN_LICENSE:LGPL$ 9 ** Commercial License Usage 10 ** Licensees holding valid commercial Qt licenses may use this file in 11 ** accordance with the commercial license agreement provided with the 12 ** Software or, alternatively, in accordance with the terms contained in 13 ** a written agreement between you and The Qt Company. For licensing terms 14 ** and conditions see https://www.qt.io/terms-conditions. For further 15 ** information use the contact form at https://www.qt.io/contact-us. 16 ** 17 ** GNU Lesser General Public License Usage 18 ** Alternatively, this file may be used under the terms of the GNU Lesser 19 ** General Public License version 3 as published by the Free Software 20 ** Foundation and appearing in the file LICENSE.LGPL3 included in the 21 ** packaging of this file. Please review the following information to 22 ** ensure the GNU Lesser General Public License version 3 requirements 23 ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. 24 ** 25 ** GNU General Public License Usage 26 ** Alternatively, this file may be used under the terms of the GNU 27 ** General Public License version 2.0 or (at your option) the GNU General 28 ** Public license version 3 or any later version approved by the KDE Free 29 ** Qt Foundation. The licenses are as published by the Free Software 30 ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 31 ** included in the packaging of this file. Please review the following 32 ** information to ensure the GNU General Public License requirements will 33 ** be met: https://www.gnu.org/licenses/gpl-2.0.html and 34 ** https://www.gnu.org/licenses/gpl-3.0.html. 35 ** 36 ** $QT_END_LICENSE$ 37 ** 38 ****************************************************************************/ 39 40 #ifndef QPICTURE_H 41 #define QPICTURE_H 42 43 #include <QtGui/qtguiglobal.h> 44 #include <QtCore/qiodevice.h> 45 #include <QtCore/qstringlist.h> 46 #include <QtCore/qsharedpointer.h> 47 #include <QtGui/qpaintdevice.h> 48 49 QT_BEGIN_NAMESPACE 50 51 52 #ifndef QT_NO_PICTURE 53 54 class QPicturePrivate; 55 class Q_GUI_EXPORT QPicture : public QPaintDevice 56 { 57 Q_DECLARE_PRIVATE(QPicture) 58 public: 59 explicit QPicture(int formatVersion = -1); 60 QPicture(const QPicture &); 61 ~QPicture(); 62 63 bool isNull() const; 64 65 int devType() const override; 66 uint size() const; 67 const char* data() const; 68 virtual void setData(const char* data, uint size); 69 70 bool play(QPainter *p); 71 72 bool load(QIODevice *dev, const char *format = nullptr); 73 bool load(const QString &fileName, const char *format = nullptr); 74 bool save(QIODevice *dev, const char *format = nullptr); 75 bool save(const QString &fileName, const char *format = nullptr); 76 77 QRect boundingRect() const; 78 void setBoundingRect(const QRect &r); 79 80 QPicture& operator=(const QPicture &p); 81 inline QPicture &operator=(QPicture &&other) noexcept 82 { qSwap(d_ptr, other.d_ptr); return *this; } swap(QPicture & other)83 inline void swap(QPicture &other) noexcept 84 { d_ptr.swap(other.d_ptr); } 85 void detach(); 86 bool isDetached() const; 87 88 friend Q_GUI_EXPORT QDataStream &operator<<(QDataStream &in, const QPicture &p); 89 friend Q_GUI_EXPORT QDataStream &operator>>(QDataStream &in, QPicture &p); 90 91 #if QT_DEPRECATED_SINCE(5, 10) 92 static QT_DEPRECATED const char* pictureFormat(const QString &fileName); 93 static QT_DEPRECATED QList<QByteArray> inputFormats(); 94 static QT_DEPRECATED QList<QByteArray> outputFormats(); 95 static QT_DEPRECATED QStringList inputFormatList(); 96 static QT_DEPRECATED QStringList outputFormatList(); 97 #endif // QT_DEPRECATED_SINCE(5, 10) 98 99 QPaintEngine *paintEngine() const override; 100 101 protected: 102 QPicture(QPicturePrivate &data); 103 104 int metric(PaintDeviceMetric m) const override; 105 106 private: 107 bool exec(QPainter *p, QDataStream &ds, int i); 108 109 QExplicitlySharedDataPointer<QPicturePrivate> d_ptr; 110 friend class QPicturePaintEngine; 111 friend class QAlphaPaintEngine; 112 friend class QPreviewPaintEngine; 113 114 public: 115 typedef QExplicitlySharedDataPointer<QPicturePrivate> DataPtr; data_ptr()116 inline DataPtr &data_ptr() { return d_ptr; } 117 }; 118 119 Q_DECLARE_SHARED(QPicture) 120 121 122 #ifndef QT_NO_PICTUREIO 123 class QIODevice; 124 class QPictureIO; 125 typedef void (*picture_io_handler)(QPictureIO *); // picture IO handler 126 127 struct QPictureIOData; 128 129 class Q_GUI_EXPORT QPictureIO 130 { 131 public: 132 QPictureIO(); 133 QPictureIO(QIODevice *ioDevice, const char *format); 134 QPictureIO(const QString &fileName, const char *format); 135 ~QPictureIO(); 136 137 const QPicture &picture() const; 138 int status() const; 139 const char *format() const; 140 QIODevice *ioDevice() const; 141 QString fileName() const; 142 int quality() const; 143 QString description() const; 144 const char *parameters() const; 145 float gamma() const; 146 147 void setPicture(const QPicture &); 148 void setStatus(int); 149 void setFormat(const char *); 150 void setIODevice(QIODevice *); 151 void setFileName(const QString &); 152 void setQuality(int); 153 void setDescription(const QString &); 154 void setParameters(const char *); 155 void setGamma(float); 156 157 bool read(); 158 bool write(); 159 160 static QByteArray pictureFormat(const QString &fileName); 161 static QByteArray pictureFormat(QIODevice *); 162 static QList<QByteArray> inputFormats(); 163 static QList<QByteArray> outputFormats(); 164 165 static void defineIOHandler(const char *format, 166 const char *header, 167 const char *flags, 168 picture_io_handler read_picture, 169 picture_io_handler write_picture); 170 171 private: 172 Q_DISABLE_COPY(QPictureIO) 173 174 void init(); 175 176 QPictureIOData *d; 177 }; 178 179 #endif //QT_NO_PICTUREIO 180 181 182 /***************************************************************************** 183 QPicture stream functions 184 *****************************************************************************/ 185 186 #ifndef QT_NO_DATASTREAM 187 Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QPicture &); 188 Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QPicture &); 189 #endif 190 191 #endif // QT_NO_PICTURE 192 193 QT_END_NAMESPACE 194 195 #endif // QPICTURE_H 196