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
|
/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Copyright (C) 2013 Alex Char.
** Contact: http://www.qt-project.org/legal
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, 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.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QICNSHANDLER_P_H
#define QICNSHANDLER_P_H
#include <QtGui/qimageiohandler.h>
#include <QtCore/qvector.h>
#ifndef QT_NO_DATASTREAM
#define MAKEOSTYPE(c0,c1,c2,c3) (((quint8)c0 << 24) | ((quint8)c1 << 16) | ((quint8)c2 << 8) | (quint8)c3)
QT_BEGIN_NAMESPACE
struct ICNSBlockHeader
{
enum OS {
TypeIcns = MAKEOSTYPE('i', 'c', 'n', 's'), // Icns container magic
TypeToc = MAKEOSTYPE('T', 'O', 'C', ' '), // Table of contents
TypeIcnv = MAKEOSTYPE('i', 'c', 'n', 'V'), // Version of the icns tool
// Legacy:
TypeClut = MAKEOSTYPE('c', 'l', 'u', 't') // Color look-up table (pre-OS X resources)
};
quint32 ostype;
quint32 length;
};
struct ICNSEntry
{
enum Group {
GroupUnknown = 0,
GroupMini = 'm', // "mini" (16x12)
GroupSmall = 's', // "small" (16x16)
GroupLarge = 'l', // "large" (32x32)
GroupHuge = 'h', // "huge" (48x48)
GroupThumbnail = 't', // "thumbnail" (128x128)
GroupPortable = 'p', // "portable"? (various sizes, png/jp2)
GroupCompressed = 'c', // "compressed"? (various sizes, png/jp2)
// Legacy icons:
GroupICON = 'N', // "ICON" (32x32)
};
enum Depth {
DepthUnknown = 0, // Default for invalid ones
DepthMono = 1,
Depth4bit = 4,
Depth8bit = 8,
Depth32bit = 32
};
enum Mask {
MaskUnknown = 0x0, // Default for invalid ones
IsIcon = 0x1, // Plain icon without alpha
IsMask = 0x2, // The whole icon entry is alpha mask
IconPlusMask = IsMask | IsIcon // Plain icon and alpha mask (double size)
};
ICNSBlockHeader header; // Original block header
Group group; // ASCII character number pointing to a format
Depth depth; // Color depth or icon format number for compressed icons
Mask mask; // Flags for uncompressed, should be always IsIcon (0x1) for compressed
quint32 width; // For uncompressed icons only, zero for compressed ones for now
quint32 height; // For uncompressed icons only, zero for compressed ones fow now
quint32 dataLength; // header.length - sizeof(header)
quint32 dataOffset; // Offset from the initial position of the file/device
bool dataIsRLE; // 32bit raw icons may be in rle24 compressed state
};
class QICNSHandler : public QImageIOHandler
{
public:
QICNSHandler();
bool canRead() const;
bool read(QImage *image);
bool write(const QImage &image);
QByteArray name() const;
bool supportsOption(ImageOption option) const;
QVariant option(ImageOption option) const;
int imageCount() const;
bool jumpToImage(int imageNumber);
bool jumpToNextImage();
static bool canRead(QIODevice *device);
private:
bool ensureScanned() const;
bool scanDevice();
void addEntry(const ICNSBlockHeader &header, quint32 imgDataOffset);
const ICNSEntry &getIconMask(const ICNSEntry &icon) const;
private:
enum ScanState {
ScanError = -1,
ScanNotScanned = 0,
ScanSuccess = 1,
};
int m_currentIconIndex;
QVector<ICNSEntry> m_icons;
QVector<ICNSEntry> m_masks;
ScanState m_state;
};
QT_END_NAMESPACE
#endif // QT_NO_DATASTREAM
#endif /* QICNSHANDLER_P_H */
|
