summaryrefslogtreecommitdiffstats
path: root/src/gui/image/qpixmap.h
blob: d1e2ecb260660912c5e1b3d48d8c66aa9128e8bb (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://www.qtsoftware.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QPIXMAP_H
#define QPIXMAP_H

#include <QtGui/qpaintdevice.h>
#include <QtGui/qcolor.h>
#include <QtCore/qnamespace.h>
#include <QtCore/qstring.h> // char*->QString conversion
#include <QtGui/qimage.h>
#include <QtGui/qtransform.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Gui)

class QImageWriter;
class QColor;
class QVariant;
class QX11Info;

class QPixmapData;

class Q_GUI_EXPORT QPixmap : public QPaintDevice
{
public:
    QPixmap();
    explicit QPixmap(QPixmapData *data);
    QPixmap(int w, int h);
    QPixmap(const QSize &);
    QPixmap(const QString& fileName, const char *format = 0, Qt::ImageConversionFlags flags = Qt::AutoColor);
#ifndef QT_NO_IMAGEFORMAT_XPM
    QPixmap(const char * const xpm[]);
#endif
    QPixmap(const QPixmap &);
    ~QPixmap();

    QPixmap &operator=(const QPixmap &);
    operator QVariant() const;

    bool isNull() const; // ### Qt 5: make inline
    int devType() const;

    int width() const; // ### Qt 5: make inline
    int height() const; // ### Qt 5: make inline
    QSize size() const;
    QRect rect() const;
    int depth() const;

    static int defaultDepth();

    void fill(const QColor &fillColor = Qt::white);
    void fill(const QWidget *widget, const QPoint &ofs);
    inline void fill(const QWidget *widget, int xofs, int yofs) { fill(widget, QPoint(xofs, yofs)); }

    QBitmap mask() const;
    void setMask(const QBitmap &);

    QPixmap alphaChannel() const;
    void setAlphaChannel(const QPixmap &);

    bool hasAlpha() const;
    bool hasAlphaChannel() const;

#ifndef QT_NO_IMAGE_HEURISTIC_MASK
    QBitmap createHeuristicMask(bool clipTight = true) const;
#endif
    QBitmap createMaskFromColor(const QColor &maskColor) const; // ### Qt 5: remove
    QBitmap createMaskFromColor(const QColor &maskColor, Qt::MaskMode mode) const;

    static QPixmap grabWindow(WId, int x=0, int y=0, int w=-1, int h=-1);
    static QPixmap grabWidget(QWidget *widget, const QRect &rect);
    static inline QPixmap grabWidget(QWidget *widget, int x=0, int y=0, int w=-1, int h=-1)
    { return grabWidget(widget, QRect(x, y, w, h)); }


    inline QPixmap scaled(int w, int h, Qt::AspectRatioMode aspectMode = Qt::IgnoreAspectRatio,
                          Qt::TransformationMode mode = Qt::FastTransformation) const
        { return scaled(QSize(w, h), aspectMode, mode); }
    QPixmap scaled(const QSize &s, Qt::AspectRatioMode aspectMode = Qt::IgnoreAspectRatio,
                   Qt::TransformationMode mode = Qt::FastTransformation) const;
    QPixmap scaledToWidth(int w, Qt::TransformationMode mode = Qt::FastTransformation) const;
    QPixmap scaledToHeight(int h, Qt::TransformationMode mode = Qt::FastTransformation) const;
    QPixmap transformed(const QMatrix &, Qt::TransformationMode mode = Qt::FastTransformation) const;
    static QMatrix trueMatrix(const QMatrix &m, int w, int h);
    QPixmap transformed(const QTransform &, Qt::TransformationMode mode = Qt::FastTransformation) const;
    static QTransform trueMatrix(const QTransform &m, int w, int h);

    QImage toImage() const;
    static QPixmap fromImage(const QImage &image, Qt::ImageConversionFlags flags = Qt::AutoColor);

    bool load(const QString& fileName, const char *format = 0, Qt::ImageConversionFlags flags = Qt::AutoColor);
    bool loadFromData(const uchar *buf, uint len, const char* format = 0, Qt::ImageConversionFlags flags = Qt::AutoColor);
    inline bool loadFromData(const QByteArray &data, const char* format = 0, Qt::ImageConversionFlags flags = Qt::AutoColor);
    bool save(const QString& fileName, const char* format = 0, int quality = -1) const;
    bool save(QIODevice* device, const char* format = 0, int quality = -1) const;

#if defined(Q_WS_WIN)
    enum HBitmapFormat {
        NoAlpha,
        PremultipliedAlpha,
        Alpha
    };

    HBITMAP toWinHBITMAP(HBitmapFormat format = NoAlpha) const;
    static QPixmap fromWinHBITMAP(HBITMAP hbitmap, HBitmapFormat format = NoAlpha);
#endif

#if defined(Q_WS_MAC)
    CGImageRef toMacCGImageRef() const;
    static QPixmap fromMacCGImageRef(CGImageRef image);
#endif

    inline QPixmap copy(int x, int y, int width, int height) const;
    QPixmap copy(const QRect &rect = QRect()) const;

    inline void scroll(int dx, int dy, int x, int y, int width, int height, QRegion *exposed = 0);
    void scroll(int dx, int dy, const QRect &rect, QRegion *exposed = 0);

    int serialNumber() const;
    qint64 cacheKey() const;

    bool isDetached() const;
    void detach();

    bool isQBitmap() const;

#if defined(Q_WS_QWS)
    const uchar *qwsBits() const;
    int qwsBytesPerLine() const;
    QRgb *clut() const;
    int numCols() const;
#elif defined(Q_WS_MAC)
    Qt::HANDLE macQDHandle() const;
    Qt::HANDLE macQDAlphaHandle() const;
    Qt::HANDLE macCGHandle() const;
#elif defined(Q_WS_X11)
    enum ShareMode { ImplicitlyShared, ExplicitlyShared };

    static QPixmap fromX11Pixmap(Qt::HANDLE pixmap, ShareMode mode = ImplicitlyShared);
    static int x11SetDefaultScreen(int screen);
    void x11SetScreen(int screen);
    const QX11Info &x11Info() const;
    Qt::HANDLE x11PictureHandle() const;
#endif

#if defined(Q_WS_X11) || defined(Q_WS_QWS)
    Qt::HANDLE handle() const;
#endif

    QPaintEngine *paintEngine() const;

    inline bool operator!() const { return isNull(); }

protected:
    int metric(PaintDeviceMetric) const;

#ifdef QT3_SUPPORT
public:
    enum ColorMode { Auto, Color, Mono };
    QT3_SUPPORT_CONSTRUCTOR QPixmap(const QString& fileName, const char *format, ColorMode mode);
    QT3_SUPPORT bool load(const QString& fileName, const char *format, ColorMode mode);
    QT3_SUPPORT bool loadFromData(const uchar *buf, uint len, const char* format, ColorMode mode);
    QT3_SUPPORT_CONSTRUCTOR QPixmap(const QImage& image);
    QT3_SUPPORT QPixmap &operator=(const QImage &);
    inline QT3_SUPPORT QImage convertToImage() const { return toImage(); }
    QT3_SUPPORT bool convertFromImage(const QImage &, ColorMode mode);
    QT3_SUPPORT bool convertFromImage(const QImage &img, Qt::ImageConversionFlags flags = Qt::AutoColor)
        { (*this) = fromImage(img, flags); return !isNull(); }
    inline QT3_SUPPORT operator QImage() const { return toImage(); }
    inline QT3_SUPPORT QPixmap xForm(const QMatrix &matrix) const { return transformed(QTransform(matrix)); }
    inline QT3_SUPPORT bool selfMask() const { return false; }
private:
    void resize_helper(const QSize &s);
public:
    inline QT3_SUPPORT void resize(const QSize &s) { resize_helper(s); }
    inline QT3_SUPPORT void resize(int width, int height) { resize_helper(QSize(width, height)); }
#endif

private:
    QPixmapData *data;

    bool doImageIO(QImageWriter *io, int quality) const;

    // ### Qt5: remove the following three lines
    enum Type { PixmapType, BitmapType }; // must match QPixmapData::PixelType
    QPixmap(const QSize &s, Type);
    void init(int, int, Type = PixmapType);

    QPixmap(const QSize &s, int type);
    void init(int, int, int);
    void deref();
#if defined(Q_WS_WIN)
    void initAlphaPixmap(uchar *bytes, int length, struct tagBITMAPINFO *bmi);
#endif
    Q_DUMMY_COMPARISON_OPERATOR(QPixmap)
#ifdef Q_WS_MAC
    friend CGContextRef qt_mac_cg_context(const QPaintDevice*);
    friend CGImageRef qt_mac_create_imagemask(const QPixmap&, const QRectF&);
    friend IconRef qt_mac_create_iconref(const QPixmap&);
    friend quint32 *qt_mac_pixmap_get_base(const QPixmap*);
    friend int qt_mac_pixmap_get_bytes_per_line(const QPixmap*);
#endif
    friend class QPixmapData;
    friend class QX11PixmapData;
    friend class QMacPixmapData;
    friend class QBitmap;
    friend class QPaintDevice;
    friend class QPainter;
    friend class QGLWidget;
    friend class QX11PaintEngine;
    friend class QCoreGraphicsPaintEngine;
    friend class QWidgetPrivate;
    friend class QRasterPaintEngine;
    friend class QRasterBuffer;
    friend class QDetachedPixmap;
#if !defined(QT_NO_DATASTREAM)
    friend Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QPixmap &);
#endif
    friend Q_GUI_EXPORT qint64 qt_pixmap_id(const QPixmap &pixmap);

public:
    QPixmapData* pixmapData() const;

public:
    typedef QPixmapData * DataPtr;
    inline DataPtr &data_ptr() { return data; }
};

Q_DECLARE_SHARED(QPixmap)

inline QPixmap QPixmap::copy(int ax, int ay, int awidth, int aheight) const
{
    return copy(QRect(ax, ay, awidth, aheight));
}

inline void QPixmap::scroll(int dx, int dy, int ax, int ay, int awidth, int aheight, QRegion *exposed)
{
    scroll(dx, dy, QRect(ax, ay, awidth, aheight), exposed);
}

inline bool QPixmap::loadFromData(const QByteArray &buf, const char *format,
                                  Qt::ImageConversionFlags flags)
{
    return loadFromData(reinterpret_cast<const uchar *>(buf.constData()), buf.size(), format, flags);
}

/*****************************************************************************
 QPixmap stream functions
*****************************************************************************/

#if !defined(QT_NO_DATASTREAM)
Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QPixmap &);
Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QPixmap &);
#endif

/*****************************************************************************
 QPixmap (and QImage) helper functions
*****************************************************************************/
#ifdef QT3_SUPPORT
QT3_SUPPORT Q_GUI_EXPORT void copyBlt(QPixmap *dst, int dx, int dy, const QPixmap *src,
                                    int sx=0, int sy=0, int sw=-1, int sh=-1);
#endif // QT3_SUPPORT

QT_END_NAMESPACE

QT_END_HEADER

#endif // QPIXMAP_H