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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
52QT_BEGIN_NAMESPACE
53
54
55class QImageWriter;
56class QImageReader;
57class QColor;
58class QVariant;
59class QPlatformPixmap;
60
61class Q_GUI_EXPORT QPixmap : public QPaintDevice
62{
63public:
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#ifdef Q_COMPILER_RVALUE_REFS
77 inline QPixmap &operator=(QPixmap &&other) Q_DECL_NOEXCEPT
78 { qSwap(data, other.data); return *this; }
79#endif
80 inline void swap(QPixmap &other) Q_DECL_NOEXCEPT
81 { qSwap(data, other.data); }
82
83 operator QVariant() const;
84
85 bool isNull() const;
86 int devType() const override;
87
88 int width() const;
89 int height() const;
90 QSize size() const;
91 QRect rect() const;
92 int depth() const;
93
94 static int defaultDepth();
95
96 void fill(const QColor &fillColor = Qt::white);
97#if QT_DEPRECATED_SINCE(5, 13)
98 QT_DEPRECATED_X("Use QPainter or fill(QColor)")
99 void fill(const QPaintDevice *device, const QPoint &ofs);
100 QT_DEPRECATED_X("Use QPainter or fill(QColor)")
101 void fill(const QPaintDevice *device, int xofs, int yofs);
102#endif
103
104 QBitmap mask() const;
105 void setMask(const QBitmap &);
106
107 qreal devicePixelRatio() const;
108 void setDevicePixelRatio(qreal scaleFactor);
109
110 bool hasAlpha() const;
111 bool hasAlphaChannel() const;
112
113#ifndef QT_NO_IMAGE_HEURISTIC_MASK
114 QBitmap createHeuristicMask(bool clipTight = true) const;
115#endif
116 QBitmap createMaskFromColor(const QColor &maskColor, Qt::MaskMode mode = Qt::MaskInColor) const;
117
118#if QT_DEPRECATED_SINCE(5, 13)
119 QT_DEPRECATED_X("Use QScreen::grabWindow() instead")
120 static QPixmap grabWindow(WId, int x = 0, int y = 0, int w = -1, int h = -1);
121 QT_DEPRECATED_X("Use QWidget::grab() instead")
122 static QPixmap grabWidget(QObject *widget, const QRect &rect);
123 QT_DEPRECATED_X("Use QWidget::grab() instead")
124 static QPixmap grabWidget(QObject *widget, int x = 0, int y = 0, int w = -1, int h = -1);
125#endif
126
127 inline QPixmap scaled(int w, int h, Qt::AspectRatioMode aspectMode = Qt::IgnoreAspectRatio,
128 Qt::TransformationMode mode = Qt::FastTransformation) const
129 { return scaled(QSize(w, h), aspectMode, mode); }
130 QPixmap scaled(const QSize &s, Qt::AspectRatioMode aspectMode = Qt::IgnoreAspectRatio,
131 Qt::TransformationMode mode = Qt::FastTransformation) const;
132 QPixmap scaledToWidth(int w, Qt::TransformationMode mode = Qt::FastTransformation) const;
133 QPixmap scaledToHeight(int h, Qt::TransformationMode mode = Qt::FastTransformation) const;
134 QPixmap transformed(const QMatrix &, Qt::TransformationMode mode = Qt::FastTransformation) const;
135 static QMatrix trueMatrix(const QMatrix &m, int w, int h);
136 QPixmap transformed(const QTransform &, Qt::TransformationMode mode = Qt::FastTransformation) const;
137 static QTransform trueMatrix(const QTransform &m, int w, int h);
138
139 QImage toImage() const;
140 static QPixmap fromImage(const QImage &image, Qt::ImageConversionFlags flags = Qt::AutoColor);
141 static QPixmap fromImageReader(QImageReader *imageReader, Qt::ImageConversionFlags flags = Qt::AutoColor);
142#ifdef Q_COMPILER_RVALUE_REFS
143 static QPixmap fromImage(QImage &&image, Qt::ImageConversionFlags flags = Qt::AutoColor)
144 {
145 return fromImageInPlace(image, flags);
146 }
147#endif
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)
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
182protected:
183 int metric(PaintDeviceMetric) const override;
184 static QPixmap fromImageInPlace(QImage &image, Qt::ImageConversionFlags flags = Qt::AutoColor);
185
186private:
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
205public:
206 QPlatformPixmap* handle() const;
207
208public:
209 typedef QExplicitlySharedDataPointer<QPlatformPixmap> DataPtr;
210 inline DataPtr &data_ptr() { return data; }
211};
212
213Q_DECLARE_SHARED(QPixmap)
214
215inline QPixmap QPixmap::copy(int ax, int ay, int awidth, int aheight) const
216{
217 return copy(QRect(ax, ay, awidth, aheight));
218}
219
220inline 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
225inline 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)
232inline QPixmap QPixmap::alphaChannel() const
233{
234 return QPixmap::fromImage(toImage().alphaChannel());
235}
236
237inline void QPixmap::setAlphaChannel(const QPixmap &p)
238{
239 QImage image = toImage();
240 image.setAlphaChannel(p.toImage());
241 *this = QPixmap::fromImage(image);
242
243}
244#endif
245
246/*****************************************************************************
247 QPixmap stream functions
248*****************************************************************************/
249
250#if !defined(QT_NO_DATASTREAM)
251Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QPixmap &);
252Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QPixmap &);
253#endif
254
255#ifndef QT_NO_DEBUG_STREAM
256Q_GUI_EXPORT QDebug operator<<(QDebug, const QPixmap &);
257#endif
258
259QT_END_NAMESPACE
260
261#endif // QPIXMAP_H
262