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39
40#ifndef QIMAGE_H
41#define QIMAGE_H
42
43#include <QtGui/qtguiglobal.h>
44#include <QtGui/qcolor.h>
45#include <QtGui/qrgb.h>
46#include <QtGui/qpaintdevice.h>
47#include <QtGui/qpixelformat.h>
48#include <QtGui/qtransform.h>
49#include <QtCore/qbytearray.h>
50#include <QtCore/qrect.h>
51#include <QtCore/qstring.h>
52#include <QtCore/qcontainerfwd.h>
53
54#if defined(Q_OS_DARWIN) || defined(Q_QDOC)
55Q_FORWARD_DECLARE_MUTABLE_CG_TYPE(CGImage);
56#endif
57
58QT_BEGIN_NAMESPACE
59
60
61class QColorSpace;
62class QColorTransform;
63class QIODevice;
64class QTransform;
65class QVariant;
66
67struct QImageData;
68
69typedef void (*QImageCleanupFunction)(void*);
70
71class Q_GUI_EXPORT QImage : public QPaintDevice
72{
73 Q_GADGET
74public:
75 enum InvertMode { InvertRgb, InvertRgba };
76 enum Format {
77 Format_Invalid,
78 Format_Mono,
79 Format_MonoLSB,
80 Format_Indexed8,
81 Format_RGB32,
82 Format_ARGB32,
83 Format_ARGB32_Premultiplied,
84 Format_RGB16,
85 Format_ARGB8565_Premultiplied,
86 Format_RGB666,
87 Format_ARGB6666_Premultiplied,
88 Format_RGB555,
89 Format_ARGB8555_Premultiplied,
90 Format_RGB888,
91 Format_RGB444,
92 Format_ARGB4444_Premultiplied,
93 Format_RGBX8888,
94 Format_RGBA8888,
95 Format_RGBA8888_Premultiplied,
96 Format_BGR30,
97 Format_A2BGR30_Premultiplied,
98 Format_RGB30,
99 Format_A2RGB30_Premultiplied,
100 Format_Alpha8,
101 Format_Grayscale8,
102 Format_RGBX64,
103 Format_RGBA64,
104 Format_RGBA64_Premultiplied,
105 Format_Grayscale16,
106 Format_BGR888,
107#ifndef Q_QDOC
108 NImageFormats
109#endif
110 };
111 Q_ENUM(Format)
112
113 QImage() noexcept;
114 QImage(const QSize &size, Format format);
115 QImage(int width, int height, Format format);
116 QImage(uchar *data, int width, int height, Format format, QImageCleanupFunction cleanupFunction = nullptr, void *cleanupInfo = nullptr);
117 QImage(const uchar *data, int width, int height, Format format, QImageCleanupFunction cleanupFunction = nullptr, void *cleanupInfo = nullptr);
118 QImage(uchar *data, int width, int height, qsizetype bytesPerLine, Format format, QImageCleanupFunction cleanupFunction = nullptr, void *cleanupInfo = nullptr);
119 QImage(const uchar *data, int width, int height, qsizetype bytesPerLine, Format format, QImageCleanupFunction cleanupFunction = nullptr, void *cleanupInfo = nullptr);
120
121#ifndef QT_NO_IMAGEFORMAT_XPM
122 explicit QImage(const char * const xpm[]);
123#endif
124 explicit QImage(const QString &fileName, const char *format = nullptr);
125
126 QImage(const QImage &);
127 inline QImage(QImage &&other) noexcept
128 : QPaintDevice(), d(qExchange(other.d, nullptr))
129 {}
130 ~QImage();
131
132 QImage &operator=(const QImage &);
133 QT_MOVE_ASSIGNMENT_OPERATOR_IMPL_VIA_MOVE_AND_SWAP(QImage)
134 inline void swap(QImage &other) noexcept
135 { qSwap(d, other.d); }
136
137 bool isNull() const;
138
139 int devType() const override;
140
141 bool operator==(const QImage &) const;
142 bool operator!=(const QImage &) const;
143 operator QVariant() const;
144 void detach();
145 bool isDetached() const;
146
147 QImage copy(const QRect &rect = QRect()) const;
148 inline QImage copy(int x, int y, int w, int h) const
149 { return copy(QRect(x, y, w, h)); }
150
151 Format format() const;
152
153 [[nodiscard]] Q_ALWAYS_INLINE QImage convertToFormat(Format f, Qt::ImageConversionFlags flags = Qt::AutoColor) const &
154 { return convertToFormat_helper(f, flags); }
155 [[nodiscard]] Q_ALWAYS_INLINE QImage convertToFormat(Format f, Qt::ImageConversionFlags flags = Qt::AutoColor) &&
156 {
157 if (convertToFormat_inplace(f, flags))
158 return std::move(*this);
159 else
160 return convertToFormat_helper(f, flags);
161 }
162 [[nodiscard]] QImage convertToFormat(Format f, const QList<QRgb> &colorTable,
163 Qt::ImageConversionFlags flags = Qt::AutoColor) const;
164 bool reinterpretAsFormat(Format f);
165
166 [[nodiscard]] QImage convertedTo(Format f, Qt::ImageConversionFlags flags = Qt::AutoColor) const &
167 { return convertToFormat(f, flags); }
168 [[nodiscard]] QImage convertedTo(Format f, Qt::ImageConversionFlags flags = Qt::AutoColor) &&
169 { return convertToFormat(f, flags); }
170 void convertTo(Format f, Qt::ImageConversionFlags flags = Qt::AutoColor);
171
172 int width() const;
173 int height() const;
174 QSize size() const;
175 QRect rect() const;
176
177 int depth() const;
178 int colorCount() const;
179 int bitPlaneCount() const;
180
181 QRgb color(int i) const;
182 void setColor(int i, QRgb c);
183 void setColorCount(int);
184
185 bool allGray() const;
186 bool isGrayscale() const;
187
188 uchar *bits();
189 const uchar *bits() const;
190 const uchar *constBits() const;
191
192 qsizetype sizeInBytes() const;
193
194 uchar *scanLine(int);
195 const uchar *scanLine(int) const;
196 const uchar *constScanLine(int) const;
197 qsizetype bytesPerLine() const;
198
199 bool valid(int x, int y) const;
200 bool valid(const QPoint &pt) const;
201
202 int pixelIndex(int x, int y) const;
203 int pixelIndex(const QPoint &pt) const;
204
205 QRgb pixel(int x, int y) const;
206 QRgb pixel(const QPoint &pt) const;
207
208 void setPixel(int x, int y, uint index_or_rgb);
209 void setPixel(const QPoint &pt, uint index_or_rgb);
210
211 QColor pixelColor(int x, int y) const;
212 QColor pixelColor(const QPoint &pt) const;
213
214 void setPixelColor(int x, int y, const QColor &c);
215 void setPixelColor(const QPoint &pt, const QColor &c);
216
217 QList<QRgb> colorTable() const;
218 void setColorTable(const QList<QRgb> &colors);
219
220 qreal devicePixelRatio() const;
221 void setDevicePixelRatio(qreal scaleFactor);
222
223 void fill(uint pixel);
224 void fill(const QColor &color);
225 void fill(Qt::GlobalColor color);
226
227
228 bool hasAlphaChannel() const;
229 void setAlphaChannel(const QImage &alphaChannel);
230 QImage createAlphaMask(Qt::ImageConversionFlags flags = Qt::AutoColor) const;
231#ifndef QT_NO_IMAGE_HEURISTIC_MASK
232 QImage createHeuristicMask(bool clipTight = true) const;
233#endif
234 QImage createMaskFromColor(QRgb color, Qt::MaskMode mode = Qt::MaskInColor) const;
235
236 inline QImage scaled(int w, int h, Qt::AspectRatioMode aspectMode = Qt::IgnoreAspectRatio,
237 Qt::TransformationMode mode = Qt::FastTransformation) const
238 { return scaled(QSize(w, h), aspectMode, mode); }
239 QImage scaled(const QSize &s, Qt::AspectRatioMode aspectMode = Qt::IgnoreAspectRatio,
240 Qt::TransformationMode mode = Qt::FastTransformation) const;
241 QImage scaledToWidth(int w, Qt::TransformationMode mode = Qt::FastTransformation) const;
242 QImage scaledToHeight(int h, Qt::TransformationMode mode = Qt::FastTransformation) const;
243 QImage transformed(const QTransform &matrix, Qt::TransformationMode mode = Qt::FastTransformation) const;
244 static QTransform trueMatrix(const QTransform &, int w, int h);
245 [[nodiscard]] QImage mirrored(bool horizontally = false, bool vertically = true) const &
246 { return mirrored_helper(horizontally, vertically); }
247 [[nodiscard]] QImage mirrored(bool horizontally = false, bool vertically = true) &&
248 { mirrored_inplace(horizontally, vertically); return std::move(*this); }
249 [[nodiscard]] QImage rgbSwapped() const &
250 { return rgbSwapped_helper(); }
251 [[nodiscard]] QImage rgbSwapped() &&
252 { rgbSwapped_inplace(); return std::move(*this); }
253 void mirror(bool horizontally = false, bool vertically = true)
254 { mirrored_inplace(horizontally, vertically); }
255 void rgbSwap()
256 { rgbSwapped_inplace(); }
257 void invertPixels(InvertMode = InvertRgb);
258
259 QColorSpace colorSpace() const;
260 QImage convertedToColorSpace(const QColorSpace &) const;
261 void convertToColorSpace(const QColorSpace &);
262 void setColorSpace(const QColorSpace &);
263
264 void applyColorTransform(const QColorTransform &transform);
265
266 bool load(QIODevice *device, const char* format);
267 bool load(const QString &fileName, const char *format = nullptr);
268 bool loadFromData(const uchar *buf, int len, const char *format = nullptr);
269 inline bool loadFromData(const QByteArray &data, const char *aformat = nullptr)
270 { return loadFromData(reinterpret_cast<const uchar *>(data.constData()), data.size(), aformat); }
271
272 bool save(const QString &fileName, const char *format = nullptr, int quality = -1) const;
273 bool save(QIODevice *device, const char *format = nullptr, int quality = -1) const;
274
275 static QImage fromData(const uchar *data, int size, const char *format = nullptr);
276 inline static QImage fromData(const QByteArray &data, const char *format = nullptr)
277 { return fromData(reinterpret_cast<const uchar *>(data.constData()), data.size(), format); }
278
279 qint64 cacheKey() const;
280
281 QPaintEngine *paintEngine() const override;
282
283 // Auxiliary data
284 int dotsPerMeterX() const;
285 int dotsPerMeterY() const;
286 void setDotsPerMeterX(int);
287 void setDotsPerMeterY(int);
288 QPoint offset() const;
289 void setOffset(const QPoint&);
290
291 QStringList textKeys() const;
292 QString text(const QString &key = QString()) const;
293 void setText(const QString &key, const QString &value);
294
295 QPixelFormat pixelFormat() const noexcept;
296 static QPixelFormat toPixelFormat(QImage::Format format) noexcept;
297 static QImage::Format toImageFormat(QPixelFormat format) noexcept;
298
299 // Platform specific conversion functions
300#if defined(Q_OS_DARWIN) || defined(Q_QDOC)
301 CGImageRef toCGImage() const Q_DECL_CF_RETURNS_RETAINED;
302#endif
303#if defined(Q_OS_WIN) || defined(Q_QDOC)
304 HBITMAP toHBITMAP() const;
305 HICON toHICON(const QImage &mask = {}) const;
306 static QImage fromHBITMAP(HBITMAP hbitmap);
307 static QImage fromHICON(HICON icon);
308#endif
309
310protected:
311 virtual int metric(PaintDeviceMetric metric) const override;
312 QImage mirrored_helper(bool horizontal, bool vertical) const;
313 QImage rgbSwapped_helper() const;
314 void mirrored_inplace(bool horizontal, bool vertical);
315 void rgbSwapped_inplace();
316 QImage convertToFormat_helper(Format format, Qt::ImageConversionFlags flags) const;
317 bool convertToFormat_inplace(Format format, Qt::ImageConversionFlags flags);
318 QImage smoothScaled(int w, int h) const;
319
320private:
321 friend class QWSOnScreenSurface;
322 QImageData *d;
323
324 friend class QRasterPlatformPixmap;
325 friend class QBlittablePlatformPixmap;
326 friend class QPixmapCacheEntry;
327 friend struct QImageData;
328
329public:
330 typedef QImageData * DataPtr;
331 inline DataPtr &data_ptr() { return d; }
332};
333
334Q_DECLARE_SHARED(QImage)
335
336// Inline functions...
337
338inline bool QImage::valid(const QPoint &pt) const { return valid(pt.x(), pt.y()); }
339inline int QImage::pixelIndex(const QPoint &pt) const { return pixelIndex(pt.x(), pt.y());}
340inline QRgb QImage::pixel(const QPoint &pt) const { return pixel(pt.x(), pt.y()); }
341inline void QImage::setPixel(const QPoint &pt, uint index_or_rgb) { setPixel(pt.x(), pt.y(), index_or_rgb); }
342inline QColor QImage::pixelColor(const QPoint &pt) const { return pixelColor(pt.x(), pt.y()); }
343inline void QImage::setPixelColor(const QPoint &pt, const QColor &c) { setPixelColor(pt.x(), pt.y(), c); }
344
345// QImage stream functions
346
347#if !defined(QT_NO_DATASTREAM)
348Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QImage &);
349Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QImage &);
350#endif
351
352#ifndef QT_NO_DEBUG_STREAM
353Q_GUI_EXPORT QDebug operator<<(QDebug, const QImage &);
354#endif
355
356
357QT_END_NAMESPACE
358
359#endif // QIMAGE_H
360