summaryrefslogtreecommitdiffstats
path: root/doc/html/qpixmap-h.html
blob: 89bb9fbb3c2fae4f1ac41244f8e6ad8c522ef437 (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
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/include/qpixmap.h:1 -->
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>qpixmap.h Include File</title>
<style type="text/css"><!--
fn { margin-left: 1cm; text-indent: -1cm; }
a:link { color: #004faf; text-decoration: none }
a:visited { color: #672967; text-decoration: none }
body { background: #ffffff; color: black; }
--></style>
</head>
<body>

<table border="0" cellpadding="0" cellspacing="0" width="100%">
<tr bgcolor="#E5E5E5">
<td valign=center>
 <a href="index.html">
<font color="#004faf">Home</font></a>
 | <a href="classes.html">
<font color="#004faf">All&nbsp;Classes</font></a>
 | <a href="mainclasses.html">
<font color="#004faf">Main&nbsp;Classes</font></a>
 | <a href="annotated.html">
<font color="#004faf">Annotated</font></a>
 | <a href="groups.html">
<font color="#004faf">Grouped&nbsp;Classes</font></a>
 | <a href="functions.html">
<font color="#004faf">Functions</font></a>
</td>
<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>qpixmap.h</h1>

<p>This is the verbatim text of the qpixmap.h include file. It is provided only for illustration; the copyright remains with Trolltech.
<hr>
<pre>
/****************************************************************************
** $Id: qt/qpixmap.h   3.3.8   edited Jan 11 14:38 $
**
** Definition of QPixmap class
**
** Created : 940501
**
** Copyright (C) 1992-2007 Trolltech ASA.  All rights reserved.
**
** This file is part of the kernel module of the Qt GUI Toolkit.
**
** This file may be used under the terms of the GNU General Public
** License versions 2.0 or 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Alternatively you may (at your option) use any
** later version of the GNU General Public License if such license has
** been publicly approved by Trolltech ASA (or its successors, if any)
** and the KDE Free Qt Foundation.
**
** Please review the following information to ensure GNU General
** Public Licensing requirements will be met:
** http://trolltech.com/products/qt/licenses/licensing/opensource/.
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
** or contact the sales department at sales@trolltech.com.
**
** This file may be used under the terms of the Q Public License as
** defined by Trolltech ASA and appearing in the file LICENSE.QPL
** included in the packaging of this file.  Licensees holding valid Qt
** Commercial licenses may use this file in accordance with the Qt
** Commercial License Agreement provided with the Software.
**
** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
** herein.
**
**********************************************************************/

#ifndef QPIXMAP_H
#define QPIXMAP_H

#ifndef QT_H
#include "qpaintdevice.h"
#include "qcolor.h" // char*-&gt;QColor conversion
#include "qstring.h" // char*-&gt;QString conversion
#include "qnamespace.h"
#endif // QT_H

class QGfx;
class QPixmapPrivate;

#if defined(Q_WS_WIN)
// Internal pixmap memory optimization class for Windows 9x
class QMultiCellPixmap;
#endif


class Q_EXPORT QPixmap : public QPaintDevice, public Qt
{
public:
    enum ColorMode { Auto, Color, Mono };
    enum Optimization { DefaultOptim, NoOptim, MemoryOptim=NoOptim,
			NormalOptim, BestOptim };

    QPixmap();
    QPixmap( const QImage&amp; image );
    QPixmap( int w, int h,  int depth = -1, Optimization = DefaultOptim );
    QPixmap( const QSize &amp;, int depth = -1, Optimization = DefaultOptim );
#ifndef QT_NO_IMAGEIO
    QPixmap( const QString&amp; fileName, const char *format=0,
	     ColorMode mode=Auto );
    QPixmap( const QString&amp; fileName, const char *format,
	     int conversion_flags );
    QPixmap( const char *xpm[] ); // ### in 4.0, 'const char * const xpm[]'?
    QPixmap( const QByteArray &amp;data );
#endif
    QPixmap( const QPixmap &amp; );
   ~QPixmap();

    QPixmap    &amp;operator=( const QPixmap &amp; );
    QPixmap    &amp;operator=( const QImage	 &amp; );

    bool	isNull()	const;

    int		width()		const { return data-&gt;w; }
    int		height()	const { return data-&gt;h; }
    QSize	size()		const { return QSize(data-&gt;w,data-&gt;h); }
    QRect	rect()		const { return QRect(0,0,data-&gt;w,data-&gt;h); }
    int		depth()		const { return data-&gt;d; }
    static int	defaultDepth();

    void	fill( const QColor &amp;fillColor = Qt::white );
    void	fill( const QWidget *, int xofs, int yofs );
    void	fill( const QWidget *, const QPoint &amp;ofs );
    void	resize( int width, int height );
    void	resize( const QSize &amp; );

    const QBitmap *mask() const;
    void	setMask( const QBitmap &amp; );
    bool	selfMask() const;
    bool	hasAlpha() const;
    bool	hasAlphaChannel() const;
#ifndef QT_NO_IMAGE_HEURISTIC_MASK
    QBitmap	createHeuristicMask( bool clipTight = TRUE ) const;
#endif
#ifndef QT_NO_MIME
    static QPixmap fromMimeSource( const QString&amp; abs_name );
#endif
    static  QPixmap grabWindow( WId, int x=0, int y=0, int w=-1, int h=-1 );
    static  QPixmap grabWidget( QWidget * widget,
				int x=0, int y=0, int w=-1, int h=-1 );

#ifndef QT_NO_PIXMAP_TRANSFORMATION
    QPixmap	    xForm( const QWMatrix &amp; ) const;
    static QWMatrix trueMatrix( const QWMatrix &amp;, int w, int h );
#endif

    QImage	convertToImage() const;
    bool	convertFromImage( const QImage &amp;, ColorMode mode=Auto );
    bool	convertFromImage( const QImage &amp;, int conversion_flags );
#ifndef QT_NO_IMAGEIO
    static const char* imageFormat( const QString &amp;fileName );
    bool	load( const QString&amp; fileName, const char *format=0,
		      ColorMode mode=Auto );
    bool	load( const QString&amp; fileName, const char *format,
		      int conversion_flags );
    bool	loadFromData( const uchar *buf, uint len,
			      const char* format=0,
			      ColorMode mode=Auto );
    bool	loadFromData( const uchar *buf, uint len,
			      const char* format,
			      int conversion_flags );
    bool	loadFromData( const QByteArray &amp;data,
			      const char* format=0,
			      int conversion_flags=0 );
    bool	save( const QString&amp; fileName, const char* format, int quality = -1 ) const;
    bool	save( QIODevice* device, const char* format, int quality = -1 ) const;
#endif

#if defined(Q_WS_WIN)
    HBITMAP	hbm()		const;
#endif

    int		serialNumber()	const;

    Optimization	optimization() const;
    void		setOptimization( Optimization );
    static Optimization defaultOptimization();
    static void		setDefaultOptimization( Optimization );

    virtual void detach();

    bool	isQBitmap() const;

#if defined(Q_WS_WIN)
    // These functions are internal and used by Windows 9x only
    bool	isMultiCellPixmap() const;
    HDC		multiCellHandle() const;
    HBITMAP	multiCellBitmap() const;
    int		multiCellOffset() const;
    int		allocCell();
    void	freeCell( bool = FALSE );
#endif

#if defined(Q_WS_QWS)
    virtual QGfx * graphicsContext(bool clip_children=TRUE) const;
    virtual unsigned char * scanLine(int) const;
    virtual int bytesPerLine() const;
    QRgb * clut() const;
    int numCols() const;
#elif defined(Q_WS_X11)
    static int x11SetDefaultScreen( int screen );
    void x11SetScreen( int screen );
#endif

#ifndef Q_QDOC
    Q_DUMMY_COMPARISON_OPERATOR(QPixmap)
#endif

protected:
    QPixmap( int w, int h, const uchar *data, bool isXbitmap );
    int metric( int ) const;

#if defined(Q_WS_WIN)
    struct QMCPI {				// mem optim for win9x
	QMultiCellPixmap *mcp;
	int	offset;
    };
#endif

    struct QPixmapData : public QShared {	// internal pixmap data
	QCOORD	w, h;
	short	d;
	uint	uninit	 : 1;
	uint	bitmap	 : 1;
	uint	selfmask : 1;
#if defined(Q_WS_WIN)
	uint	mcp	 : 1;
#endif
	int	ser_no;
	QBitmap *mask;
#if defined(Q_WS_WIN)
	QPixmap *maskpm;
	union {
	    HBITMAP hbm;    // if mcp == FALSE
	    QMCPI  *mcpi;   // if mcp == TRUE
	} hbm_or_mcpi;
	uchar *realAlphaBits;
#ifdef Q_OS_TEMP
	uchar* ppvBits; // Pointer to DIBSection bits
#endif
#elif defined(Q_WS_X11)
	void   *ximage;
	void   *maskgc;
	QPixmap *alphapm;
#elif defined(Q_WS_MAC)
	ColorTable *clut;
	QPixmap *alphapm;
#elif defined(Q_WS_QWS)
	int id; // ### should use QPaintDevice::hd, since it is there
	QRgb * clut;
	int numcols;
	int rw;
	int rh;
	bool hasAlpha;
#endif
	Optimization optim;
#if defined(Q_WS_WIN)
	HBITMAP old_hbm;
#endif
    } *data;
private:
#ifndef QT_NO_IMAGEIO
    bool doImageIO( QImageIO* io, int quality ) const;
#endif
    QPixmap( int w, int h, int depth, bool, Optimization );
    void	init( int, int, int, bool, Optimization );
    void	deref();
    QPixmap	copy( bool ignoreMask = FALSE ) const;
#if defined(Q_WS_WIN)
    void initAlphaPixmap( uchar *bytes, int length, struct tagBITMAPINFO *bmi );
    void convertToAlphaPixmap( bool initAlpha=TRUE );
    static void bitBltAlphaPixmap( QPixmap *dst, int dx, int dy,
				   const QPixmap *src, int sx, int sy,
				   int sw, int sh, bool useDstAlpha );
#endif
    static Optimization defOptim;
    friend Q_EXPORT void bitBlt( QPaintDevice *, int, int,
				 const QPaintDevice *,
				 int, int, int, int, RasterOp, bool );
    friend Q_EXPORT void bitBlt( QPaintDevice *, int, int,
				 const QImage* src,
				 int, int, int, int, int conversion_flags );
    friend Q_EXPORT void copyBlt( QPixmap *dst, int dx, int dy,
				  const QPixmap *src, int sx, int sy,
				  int sw, int sh );

#if defined(Q_WS_MAC)
    friend void unclippedScaledBitBlt(QPaintDevice *, int, int, int, int,
				      const QPaintDevice *, int, int, int, int,
				      Qt::RasterOp, bool, bool);
#endif

    friend class QBitmap;
    friend class QPaintDevice;
    friend class QPainter;
    friend class QGLWidget;
};


inline bool QPixmap::isNull() const
{
    return data-&gt;w == 0;
}

inline void QPixmap::fill( const QWidget *w, const QPoint &amp;ofs )
{
    fill( w, ofs.x(), ofs.y() );
}

inline void QPixmap::resize( const QSize &amp;s )
{
    resize( s.width(), s.height() );
}

inline const QBitmap *QPixmap::mask() const
{
    return data-&gt;mask;
}

inline bool QPixmap::selfMask() const
{
    return data-&gt;selfmask;
}

#if defined(Q_WS_WIN)
inline HBITMAP QPixmap::hbm() const
{
    return data-&gt;mcp ? 0 : data-&gt;hbm_or_mcpi.hbm;
}
#endif

inline int QPixmap::serialNumber() const
{
    return data-&gt;ser_no;
}

inline QPixmap::Optimization QPixmap::optimization() const
{
    return data-&gt;optim;
}

inline bool QPixmap::isQBitmap() const
{
    return data-&gt;bitmap;
}

#if defined(Q_WS_WIN)
inline bool QPixmap::isMultiCellPixmap() const
{
    return data-&gt;mcp;
}
#endif


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

#if !defined(QT_NO_DATASTREAM) &amp;&amp; !defined(QT_NO_IMAGEIO)
Q_EXPORT QDataStream &amp;operator&lt;&lt;( QDataStream &amp;, const QPixmap &amp; );
Q_EXPORT QDataStream &amp;operator&gt;&gt;( QDataStream &amp;, QPixmap &amp; );
#endif

/*****************************************************************************
  QPixmap (and QImage) helper functions
 *****************************************************************************/

#ifndef QT_NO_PIXMAP_TRANSFORMATION
#  define QT_XFORM_TYPE_MSBFIRST 0
#  define QT_XFORM_TYPE_LSBFIRST 1
#  if defined(Q_WS_WIN)
#    define QT_XFORM_TYPE_WINDOWSPIXMAP 2
#  endif
bool qt_xForm_helper( const QWMatrix&amp;, int, int, int, uchar*, int, int, int, uchar*, int, int, int );
#endif

Q_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 // QPIXMAP_H
</pre>
<!-- eof -->
<p><address><hr><div align=center>
<table width=100% cellspacing=0 border=0><tr>
<td>Copyright &copy; 2007
<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
<td align=right><div align=right>Qt 3.3.8</div>
</table></div></address></body>
</html>