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38 ****************************************************************************/
39
40 #ifndef QPIXMAP_H
41 #define QPIXMAP_H
42
43 #include <QtGui/qtguiglobal.h>
44 #include <QtGui/qpaintdevice.h>
45 #include <QtGui/qcolor.h>
46 #include <QtCore/qnamespace.h>
47 #include <QtCore/qstring.h> // char*->QString conversion
48 #include <QtCore/qsharedpointer.h>
49 #include <QtGui/qimage.h>
50 #include <QtGui/qtransform.h>
51
52 QT_BEGIN_NAMESPACE
53
54
55 class QImageWriter;
56 class QImageReader;
57 class QColor;
58 class QVariant;
59 class QPlatformPixmap;
60
61 class Q_GUI_EXPORT QPixmap : public QPaintDevice
62 {
63 public:
64 QPixmap();
65 explicit QPixmap(QPlatformPixmap *data);
66 QPixmap(int w, int h);
67 explicit QPixmap(const QSize &);
68 QPixmap(const QString& fileName, const char *format = nullptr, Qt::ImageConversionFlags flags = Qt::AutoColor);
69 #ifndef QT_NO_IMAGEFORMAT_XPM
70 explicit QPixmap(const char * const xpm[]);
71 #endif
72 QPixmap(const QPixmap &);
73 ~QPixmap();
74
75 QPixmap &operator=(const QPixmap &);
76 inline QPixmap &operator=(QPixmap &&other) noexcept
77 { qSwap(data, other.data); return *this; }
swap(QPixmap & other)78 inline void swap(QPixmap &other) noexcept
79 { qSwap(data, other.data); }
80
81 operator QVariant() const;
82
83 bool isNull() const;
84 int devType() const override;
85
86 int width() const;
87 int height() const;
88 QSize size() const;
89 QRect rect() const;
90 int depth() const;
91
92 static int defaultDepth();
93
94 void fill(const QColor &fillColor = Qt::white);
95 #if QT_DEPRECATED_SINCE(5, 13)
96 QT_DEPRECATED_X("Use QPainter or fill(QColor)")
97 void fill(const QPaintDevice *device, const QPoint &ofs);
98 QT_DEPRECATED_X("Use QPainter or fill(QColor)")
99 void fill(const QPaintDevice *device, int xofs, int yofs);
100 #endif
101
102 QBitmap mask() const;
103 void setMask(const QBitmap &);
104
105 qreal devicePixelRatio() const;
106 void setDevicePixelRatio(qreal scaleFactor);
107
108 bool hasAlpha() const;
109 bool hasAlphaChannel() const;
110
111 #ifndef QT_NO_IMAGE_HEURISTIC_MASK
112 QBitmap createHeuristicMask(bool clipTight = true) const;
113 #endif
114 QBitmap createMaskFromColor(const QColor &maskColor, Qt::MaskMode mode = Qt::MaskInColor) const;
115
116 #if QT_DEPRECATED_SINCE(5, 13)
117 QT_DEPRECATED_X("Use QScreen::grabWindow() instead")
118 static QPixmap grabWindow(WId, int x = 0, int y = 0, int w = -1, int h = -1);
119 QT_DEPRECATED_X("Use QWidget::grab() instead")
120 static QPixmap grabWidget(QObject *widget, const QRect &rect);
121 QT_DEPRECATED_X("Use QWidget::grab() instead")
122 static QPixmap grabWidget(QObject *widget, int x = 0, int y = 0, int w = -1, int h = -1);
123 #endif
124
125 inline QPixmap scaled(int w, int h, Qt::AspectRatioMode aspectMode = Qt::IgnoreAspectRatio,
126 Qt::TransformationMode mode = Qt::FastTransformation) const
127 { return scaled(QSize(w, h), aspectMode, mode); }
128 QPixmap scaled(const QSize &s, Qt::AspectRatioMode aspectMode = Qt::IgnoreAspectRatio,
129 Qt::TransformationMode mode = Qt::FastTransformation) const;
130 QPixmap scaledToWidth(int w, Qt::TransformationMode mode = Qt::FastTransformation) const;
131 QPixmap scaledToHeight(int h, Qt::TransformationMode mode = Qt::FastTransformation) const;
132 #if QT_DEPRECATED_SINCE(5, 15)
133 QT_DEPRECATED_X("Use transformed(const QTransform &, Qt::TransformationMode mode)")
134 QPixmap transformed(const QMatrix &, Qt::TransformationMode mode = Qt::FastTransformation) const;
135 QT_DEPRECATED_X("Use trueMatrix(const QTransform &m, int w, int h)")
136 static QMatrix trueMatrix(const QMatrix &m, int w, int h);
137 #endif // QT_DEPRECATED_SINCE(5, 15)
138 QPixmap transformed(const QTransform &, Qt::TransformationMode mode = Qt::FastTransformation) const;
139 static QTransform trueMatrix(const QTransform &m, int w, int h);
140
141 QImage toImage() const;
142 static QPixmap fromImage(const QImage &image, Qt::ImageConversionFlags flags = Qt::AutoColor);
143 static QPixmap fromImageReader(QImageReader *imageReader, Qt::ImageConversionFlags flags = Qt::AutoColor);
144 static QPixmap fromImage(QImage &&image, Qt::ImageConversionFlags flags = Qt::AutoColor)
145 {
146 return fromImageInPlace(image, flags);
147 }
148
149 bool load(const QString& fileName, const char *format = nullptr, Qt::ImageConversionFlags flags = Qt::AutoColor);
150 bool loadFromData(const uchar *buf, uint len, const char* format = nullptr, Qt::ImageConversionFlags flags = Qt::AutoColor);
151 inline bool loadFromData(const QByteArray &data, const char* format = nullptr, Qt::ImageConversionFlags flags = Qt::AutoColor);
152 bool save(const QString& fileName, const char* format = nullptr, int quality = -1) const;
153 bool save(QIODevice* device, const char* format = nullptr, int quality = -1) const;
154
155 bool convertFromImage(const QImage &img, Qt::ImageConversionFlags flags = Qt::AutoColor);
156
157 inline QPixmap copy(int x, int y, int width, int height) const;
158 QPixmap copy(const QRect &rect = QRect()) const;
159
160 inline void scroll(int dx, int dy, int x, int y, int width, int height, QRegion *exposed = nullptr);
161 void scroll(int dx, int dy, const QRect &rect, QRegion *exposed = nullptr);
162
163 #if QT_DEPRECATED_SINCE(5, 0)
serialNumber()164 QT_DEPRECATED inline int serialNumber() const { return cacheKey() >> 32; }
165 #endif
166 qint64 cacheKey() const;
167
168 bool isDetached() const;
169 void detach();
170
171 bool isQBitmap() const;
172
173 QPaintEngine *paintEngine() const override;
174
175 inline bool operator!() const { return isNull(); }
176
177 #if QT_DEPRECATED_SINCE(5, 0)
178 QT_DEPRECATED inline QPixmap alphaChannel() const;
179 QT_DEPRECATED inline void setAlphaChannel(const QPixmap &);
180 #endif
181
182 protected:
183 int metric(PaintDeviceMetric) const override;
184 static QPixmap fromImageInPlace(QImage &image, Qt::ImageConversionFlags flags = Qt::AutoColor);
185
186 private:
187 QExplicitlySharedDataPointer<QPlatformPixmap> data;
188
189 bool doImageIO(QImageWriter *io, int quality) const;
190
191 QPixmap(const QSize &s, int type);
192 void doInit(int, int, int);
193 Q_DUMMY_COMPARISON_OPERATOR(QPixmap)
194 friend class QPlatformPixmap;
195 friend class QBitmap;
196 friend class QPaintDevice;
197 friend class QPainter;
198 friend class QOpenGLWidget;
199 friend class QWidgetPrivate;
200 friend class QRasterBuffer;
201 #if !defined(QT_NO_DATASTREAM)
202 friend Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QPixmap &);
203 #endif
204
205 public:
206 QPlatformPixmap* handle() const;
207
208 public:
209 typedef QExplicitlySharedDataPointer<QPlatformPixmap> DataPtr;
data_ptr()210 inline DataPtr &data_ptr() { return data; }
211 };
212
Q_DECLARE_SHARED(QPixmap)213 Q_DECLARE_SHARED(QPixmap)
214
215 inline QPixmap QPixmap::copy(int ax, int ay, int awidth, int aheight) const
216 {
217 return copy(QRect(ax, ay, awidth, aheight));
218 }
219
scroll(int dx,int dy,int ax,int ay,int awidth,int aheight,QRegion * exposed)220 inline void QPixmap::scroll(int dx, int dy, int ax, int ay, int awidth, int aheight, QRegion *exposed)
221 {
222 scroll(dx, dy, QRect(ax, ay, awidth, aheight), exposed);
223 }
224
loadFromData(const QByteArray & buf,const char * format,Qt::ImageConversionFlags flags)225 inline bool QPixmap::loadFromData(const QByteArray &buf, const char *format,
226 Qt::ImageConversionFlags flags)
227 {
228 return loadFromData(reinterpret_cast<const uchar *>(buf.constData()), buf.size(), format, flags);
229 }
230
231 #if QT_DEPRECATED_SINCE(5, 0)
alphaChannel()232 inline QPixmap QPixmap::alphaChannel() const
233 {
234 QT_WARNING_PUSH
235 QT_WARNING_DISABLE_DEPRECATED
236 return QPixmap::fromImage(toImage().alphaChannel());
237 QT_WARNING_POP
238 }
239
setAlphaChannel(const QPixmap & p)240 inline void QPixmap::setAlphaChannel(const QPixmap &p)
241 {
242 QImage image = toImage();
243 image.setAlphaChannel(p.toImage());
244 *this = QPixmap::fromImage(image);
245
246 }
247 #endif
248
249 /*****************************************************************************
250 QPixmap stream functions
251 *****************************************************************************/
252
253 #if !defined(QT_NO_DATASTREAM)
254 Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QPixmap &);
255 Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QPixmap &);
256 #endif
257
258 #ifndef QT_NO_DEBUG_STREAM
259 Q_GUI_EXPORT QDebug operator<<(QDebug, const QPixmap &);
260 #endif
261
262 QT_END_NAMESPACE
263
264 #endif // QPIXMAP_H
265