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
|
/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtOpenVG 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 Technology Preview License Agreement accompanying
** this package.
**
** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QPIXMAPDATA_VG_P_H
#define QPIXMAPDATA_VG_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of other Qt classes. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtGui/private/qpixmap_raster_p.h>
#include <QtGui/private/qvolatileimage_p.h>
#include "qvg_p.h"
#if defined(Q_OS_SYMBIAN)
class RSGImage;
#endif
QT_BEGIN_NAMESPACE
class QEglContext;
class QVGImagePool;
class QImageReader;
#if !defined(QT_NO_EGL)
class QVGPixmapData;
class QVGSharedContext;
void qt_vg_register_pixmap(QVGPixmapData *pd);
void qt_vg_unregister_pixmap(QVGPixmapData *pd);
void qt_vg_hibernate_pixmaps(QVGSharedContext *context);
#endif
class QNativeImageHandleProvider;
class Q_OPENVG_EXPORT QVGPixmapData : public QPixmapData
{
public:
QVGPixmapData(PixelType type);
~QVGPixmapData();
QPixmapData *createCompatiblePixmapData() const;
// Is this pixmap valid (i.e. non-zero in size)?
bool isValid() const;
void resize(int width, int height);
void fromImage(const QImage &image, Qt::ImageConversionFlags flags);
void fromImageReader(QImageReader *imageReader,
Qt::ImageConversionFlags flags);
bool fromFile(const QString &filename, const char *format,
Qt::ImageConversionFlags flags);
bool fromData(const uchar *buffer, uint len, const char *format,
Qt::ImageConversionFlags flags);
void fill(const QColor &color);
bool hasAlphaChannel() const;
void setAlphaChannel(const QPixmap &alphaChannel);
QImage toImage() const;
void copy(const QPixmapData *data, const QRect &rect);
QImage *buffer();
QPaintEngine* paintEngine() const;
// Return the VGImage form of this pixmap, creating it if necessary.
// This assumes that there is a VG context current.
virtual VGImage toVGImage();
// Return the VGImage form for a specific opacity setting.
virtual VGImage toVGImage(qreal opacity);
// Detach this image from the image pool.
virtual void detachImageFromPool();
// Release the VG resources associated with this pixmap and copy
// the pixmap's contents out of the GPU back into main memory.
// The VG resource will be automatically recreated the next time
// toVGImage() is called. Does nothing if the pixmap cannot be
// hibernated for some reason (e.g. VGImage is shared with another
// process via a SgImage).
virtual void hibernate();
// Called when the QVGImagePool wants to reclaim this pixmap's
// VGImage objects to reuse storage.
virtual void reclaimImages();
// If vgImage is valid but source is null, copies pixel data from GPU back
// into main memory and destroys vgImage. For a normal pixmap this function
// does nothing, however if the pixmap was created directly from a VGImage
// (e.g. via SgImage on Symbian) then by doing the readback this ensures
// that QImage-based functions can operate too.
virtual void ensureReadback(bool readOnly) const;
QSize size() const { return QSize(w, h); }
#if defined(Q_OS_SYMBIAN)
void* toNativeType(NativeType type);
void fromNativeType(void* pixmap, NativeType type);
bool initFromNativeImageHandle(void *handle, const QString &type);
void createFromNativeImageHandleProvider();
void releaseNativeImageHandle();
#endif
protected:
int metric(QPaintDevice::PaintDeviceMetric metric) const;
void createPixmapForImage(QImage &image, Qt::ImageConversionFlags flags, bool inPlace);
#if defined(Q_OS_SYMBIAN)
void cleanup();
#endif
private:
QVGPixmapData *nextLRU;
QVGPixmapData *prevLRU;
bool inLRU;
bool failedToAlloc;
friend class QVGImagePool;
friend class QVGPaintEngine;
#if !defined(QT_NO_EGL)
QVGPixmapData *next;
QVGPixmapData *prev;
friend void qt_vg_register_pixmap(QVGPixmapData *pd);
friend void qt_vg_unregister_pixmap(QVGPixmapData *pd);
friend void qt_vg_hibernate_pixmaps(QVGSharedContext *context);
#endif
protected:
QSize prevSize;
VGImage vgImage;
VGImage vgImageOpacity;
qreal cachedOpacity;
mutable QVolatileImage source;
mutable bool recreate;
bool inImagePool;
#if !defined(QT_NO_EGL)
mutable QEglContext *context;
#endif
#if defined(Q_OS_SYMBIAN)
mutable QNativeImageHandleProvider *nativeImageHandleProvider;
void *nativeImageHandle;
QString nativeImageType;
#endif
void forceToImage(bool allowReadback = true);
QImage::Format sourceFormat() const;
QImage::Format idealFormat(QImage *image, Qt::ImageConversionFlags flags) const;
void updateSerial();
void destroyImageAndContext();
void destroyImages();
};
QT_END_NAMESPACE
#endif
|
