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39 | |
40 | #ifndef QIMAGEIOHANDLER_H |
41 | #define QIMAGEIOHANDLER_H |
42 | |
43 | #include <QtGui/qtguiglobal.h> |
44 | #include <QtCore/qiodevice.h> |
45 | #include <QtCore/qplugin.h> |
46 | #include <QtCore/qfactoryinterface.h> |
47 | #include <QtCore/qscopedpointer.h> |
48 | |
49 | QT_BEGIN_NAMESPACE |
50 | |
51 | |
52 | class QImage; |
53 | class QRect; |
54 | class QSize; |
55 | class QVariant; |
56 | |
57 | class QImageIOHandlerPrivate; |
58 | class Q_GUI_EXPORT QImageIOHandler |
59 | { |
60 | Q_DECLARE_PRIVATE(QImageIOHandler) |
61 | public: |
62 | QImageIOHandler(); |
63 | virtual ~QImageIOHandler(); |
64 | |
65 | void setDevice(QIODevice *device); |
66 | QIODevice *device() const; |
67 | |
68 | void setFormat(const QByteArray &format); |
69 | void setFormat(const QByteArray &format) const; |
70 | QByteArray format() const; |
71 | |
72 | QT_DEPRECATED_X("Use QImageIOHandler::format() instead" ) |
73 | virtual QByteArray name() const; |
74 | |
75 | virtual bool canRead() const = 0; |
76 | virtual bool read(QImage *image) = 0; |
77 | virtual bool write(const QImage &image); |
78 | |
79 | enum ImageOption { |
80 | Size, |
81 | ClipRect, |
82 | Description, |
83 | ScaledClipRect, |
84 | ScaledSize, |
85 | CompressionRatio, |
86 | Gamma, |
87 | Quality, |
88 | Name, |
89 | SubType, |
90 | IncrementalReading, |
91 | Endianness, |
92 | Animation, |
93 | BackgroundColor, |
94 | ImageFormat, |
95 | SupportedSubTypes, |
96 | OptimizedWrite, |
97 | ProgressiveScanWrite, |
98 | ImageTransformation |
99 | #if QT_VERSION < QT_VERSION_CHECK(6, 0, 0) |
100 | , TransformedByDefault |
101 | #endif |
102 | }; |
103 | |
104 | enum Transformation { |
105 | TransformationNone = 0, |
106 | TransformationMirror = 1, |
107 | TransformationFlip = 2, |
108 | TransformationRotate180 = TransformationMirror | TransformationFlip, |
109 | TransformationRotate90 = 4, |
110 | TransformationMirrorAndRotate90 = TransformationMirror | TransformationRotate90, |
111 | TransformationFlipAndRotate90 = TransformationFlip | TransformationRotate90, |
112 | TransformationRotate270 = TransformationRotate180 | TransformationRotate90 |
113 | }; |
114 | Q_DECLARE_FLAGS(Transformations, Transformation) |
115 | |
116 | virtual QVariant option(ImageOption option) const; |
117 | virtual void setOption(ImageOption option, const QVariant &value); |
118 | virtual bool supportsOption(ImageOption option) const; |
119 | |
120 | // incremental loading |
121 | virtual bool jumpToNextImage(); |
122 | virtual bool jumpToImage(int imageNumber); |
123 | virtual int loopCount() const; |
124 | virtual int imageCount() const; |
125 | virtual int nextImageDelay() const; |
126 | virtual int currentImageNumber() const; |
127 | virtual QRect currentImageRect() const; |
128 | |
129 | protected: |
130 | QImageIOHandler(QImageIOHandlerPrivate &dd); |
131 | QScopedPointer<QImageIOHandlerPrivate> d_ptr; |
132 | private: |
133 | Q_DISABLE_COPY(QImageIOHandler) |
134 | }; |
135 | |
136 | #ifndef QT_NO_IMAGEFORMATPLUGIN |
137 | |
138 | #define QImageIOHandlerFactoryInterface_iid "org.qt-project.Qt.QImageIOHandlerFactoryInterface" |
139 | |
140 | class Q_GUI_EXPORT QImageIOPlugin : public QObject |
141 | { |
142 | Q_OBJECT |
143 | public: |
144 | explicit QImageIOPlugin(QObject *parent = nullptr); |
145 | ~QImageIOPlugin(); |
146 | |
147 | enum Capability { |
148 | CanRead = 0x1, |
149 | CanWrite = 0x2, |
150 | CanReadIncremental = 0x4 |
151 | }; |
152 | Q_DECLARE_FLAGS(Capabilities, Capability) |
153 | |
154 | virtual Capabilities capabilities(QIODevice *device, const QByteArray &format) const = 0; |
155 | virtual QImageIOHandler *create(QIODevice *device, const QByteArray &format = QByteArray()) const = 0; |
156 | }; |
157 | |
158 | Q_DECLARE_OPERATORS_FOR_FLAGS(QImageIOPlugin::Capabilities) |
159 | |
160 | #endif // QT_NO_IMAGEFORMATPLUGIN |
161 | |
162 | QT_END_NAMESPACE |
163 | |
164 | #endif // QIMAGEIOHANDLER_H |
165 | |