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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;
60QT_DECLARE_QESDP_SPECIALIZATION_DTOR_WITH_EXPORT(QPlatformPixmap, Q_GUI_EXPORT)
61
62class Q_GUI_EXPORT QPixmap : public QPaintDevice
63{
64public:
65 QPixmap();
66 explicit QPixmap(QPlatformPixmap *data);
67 QPixmap(int w, int h);
68 explicit QPixmap(const QSize &);
69 QPixmap(const QString& fileName, const char *format = nullptr, Qt::ImageConversionFlags flags = Qt::AutoColor);
70#ifndef QT_NO_IMAGEFORMAT_XPM
71 explicit QPixmap(const char * const xpm[]);
72#endif
73 QPixmap(const QPixmap &);
74 QPixmap(QPixmap &&other) noexcept : QPaintDevice(), data(std::move(other.data)) {}
75 ~QPixmap();
76
77 QPixmap &operator=(const QPixmap &);
78 QT_MOVE_ASSIGNMENT_OPERATOR_IMPL_VIA_MOVE_AND_SWAP(QPixmap)
79 inline void swap(QPixmap &other) noexcept
80 { qSwap(data, other.data); }
81 bool operator==(const QPixmap &) const = delete;
82 bool operator!=(const QPixmap &) const = delete;
83
84 operator QVariant() const;
85
86 bool isNull() const;
87 int devType() const override;
88
89 int width() const;
90 int height() const;
91 QSize size() const;
92 QRect rect() const;
93 int depth() const;
94
95 static int defaultDepth();
96
97 void fill(const QColor &fillColor = Qt::white);
98
99 QBitmap mask() const;
100 void setMask(const QBitmap &);
101
102 qreal devicePixelRatio() const;
103 void setDevicePixelRatio(qreal scaleFactor);
104
105 bool hasAlpha() const;
106 bool hasAlphaChannel() const;
107
108#ifndef QT_NO_IMAGE_HEURISTIC_MASK
109 QBitmap createHeuristicMask(bool clipTight = true) const;
110#endif
111 QBitmap createMaskFromColor(const QColor &maskColor, Qt::MaskMode mode = Qt::MaskInColor) const;
112
113 inline QPixmap scaled(int w, int h, Qt::AspectRatioMode aspectMode = Qt::IgnoreAspectRatio,
114 Qt::TransformationMode mode = Qt::FastTransformation) const
115 { return scaled(QSize(w, h), aspectMode, mode); }
116 QPixmap scaled(const QSize &s, Qt::AspectRatioMode aspectMode = Qt::IgnoreAspectRatio,
117 Qt::TransformationMode mode = Qt::FastTransformation) const;
118 QPixmap scaledToWidth(int w, Qt::TransformationMode mode = Qt::FastTransformation) const;
119 QPixmap scaledToHeight(int h, Qt::TransformationMode mode = Qt::FastTransformation) const;
120 QPixmap transformed(const QTransform &, Qt::TransformationMode mode = Qt::FastTransformation) const;
121 static QTransform trueMatrix(const QTransform &m, int w, int h);
122
123 QImage toImage() const;
124 static QPixmap fromImage(const QImage &image, Qt::ImageConversionFlags flags = Qt::AutoColor);
125 static QPixmap fromImageReader(QImageReader *imageReader, Qt::ImageConversionFlags flags = Qt::AutoColor);
126 static QPixmap fromImage(QImage &&image, Qt::ImageConversionFlags flags = Qt::AutoColor)
127 {
128 return fromImageInPlace(image, flags);
129 }
130
131 bool load(const QString& fileName, const char *format = nullptr, Qt::ImageConversionFlags flags = Qt::AutoColor);
132 bool loadFromData(const uchar *buf, uint len, const char* format = nullptr, Qt::ImageConversionFlags flags = Qt::AutoColor);
133 inline bool loadFromData(const QByteArray &data, const char* format = nullptr, Qt::ImageConversionFlags flags = Qt::AutoColor);
134 bool save(const QString& fileName, const char* format = nullptr, int quality = -1) const;
135 bool save(QIODevice* device, const char* format = nullptr, int quality = -1) const;
136
137 bool convertFromImage(const QImage &img, Qt::ImageConversionFlags flags = Qt::AutoColor);
138
139 inline QPixmap copy(int x, int y, int width, int height) const;
140 QPixmap copy(const QRect &rect = QRect()) const;
141
142 inline void scroll(int dx, int dy, int x, int y, int width, int height, QRegion *exposed = nullptr);
143 void scroll(int dx, int dy, const QRect &rect, QRegion *exposed = nullptr);
144
145 qint64 cacheKey() const;
146
147 bool isDetached() const;
148 void detach();
149
150 bool isQBitmap() const;
151
152 QPaintEngine *paintEngine() const override;
153
154 inline bool operator!() const { return isNull(); }
155
156protected:
157 int metric(PaintDeviceMetric) const override;
158 static QPixmap fromImageInPlace(QImage &image, Qt::ImageConversionFlags flags = Qt::AutoColor);
159
160private:
161 QExplicitlySharedDataPointer<QPlatformPixmap> data;
162
163 bool doImageIO(QImageWriter *io, int quality) const;
164
165 QPixmap(const QSize &s, int type);
166 void doInit(int, int, int);
167 Q_DUMMY_COMPARISON_OPERATOR(QPixmap)
168 friend class QPlatformPixmap;
169 friend class QBitmap;
170 friend class QPaintDevice;
171 friend class QPainter;
172 friend class QOpenGLWidget;
173 friend class QWidgetPrivate;
174 friend class QRasterBuffer;
175#if !defined(QT_NO_DATASTREAM)
176 friend Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QPixmap &);
177#endif
178
179public:
180 QPlatformPixmap* handle() const;
181
182public:
183 typedef QExplicitlySharedDataPointer<QPlatformPixmap> DataPtr;
184 inline DataPtr &data_ptr() { return data; }
185};
186
187Q_DECLARE_SHARED(QPixmap)
188
189inline QPixmap QPixmap::copy(int ax, int ay, int awidth, int aheight) const
190{
191 return copy(QRect(ax, ay, awidth, aheight));
192}
193
194inline void QPixmap::scroll(int dx, int dy, int ax, int ay, int awidth, int aheight, QRegion *exposed)
195{
196 scroll(dx, dy, QRect(ax, ay, awidth, aheight), exposed);
197}
198
199inline bool QPixmap::loadFromData(const QByteArray &buf, const char *format,
200 Qt::ImageConversionFlags flags)
201{
202 return loadFromData(reinterpret_cast<const uchar *>(buf.constData()), buf.size(), format, flags);
203}
204
205
206/*****************************************************************************
207 QPixmap stream functions
208*****************************************************************************/
209
210#if !defined(QT_NO_DATASTREAM)
211Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QPixmap &);
212Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QPixmap &);
213#endif
214
215#ifndef QT_NO_DEBUG_STREAM
216Q_GUI_EXPORT QDebug operator<<(QDebug, const QPixmap &);
217#endif
218
219QT_END_NAMESPACE
220
221#endif // QPIXMAP_H
222