$extrastylesheet
Olena  User documentation 2.1
An Image Processing Platform
 All Classes Namespaces Functions Variables Typedefs Enumerations Enumerator Friends Groups Pages
from_qimage.hh
1 // Copyright (C) 2010 EPITA Research and Development Laboratory (LRDE)
2 //
3 // This file is part of Olena.
4 //
5 // Olena is free software: you can redistribute it and/or modify it under
6 // the terms of the GNU General Public License as published by the Free
7 // Software Foundation, version 2 of the License.
8 //
9 // Olena is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 // General Public License for more details.
13 //
14 // You should have received a copy of the GNU General Public License
15 // along with Olena. If not, see <http://www.gnu.org/licenses/>.
16 //
17 // As a special exception, you may use this file as part of a free
18 // software project without restriction. Specifically, if other files
19 // instantiate templates or use macros or inline functions from this
20 // file, or you compile this file and link it with other files to produce
21 // an executable, this file does not by itself cause the resulting
22 // executable to be covered by the GNU General Public License. This
23 // exception does not however invalidate any other reasons why the
24 // executable file might be covered by the GNU General Public License.
25 
26 
27 
28 #ifndef SCRIBO_CONVERT_FROM_QIMAGE_HH
29 # define SCRIBO_CONVERT_FROM_QIMAGE_HH
30 
34 
35 
36 # include <QtGui/QImage>
37 
38 # include <mln/core/image/image2d.hh>
39 # include <mln/value/qt/rgb32.hh>
40 
41 # if QT_VERSION < 0x040000
42 # error "Qt library too old. You need at least Qt 4.x."
43 # endif // ! QT_VERSION
44 
45 
46 namespace scribo
47 {
48 
49  namespace convert
50  {
51 
60  from_qimage(const QImage& ima);
61 
62 
63 # ifndef MLN_INCLUDE_ONLY
64 
66  from_qimage(const QImage& ima)
67  {
68  QImage tmp = ima;
69 
70  if (ima.format() != QImage::Format_RGB32)
71  tmp = ima.convertToFormat(QImage::Format_RGB32);
72 
73  const int
74  nrows = tmp.height(),
75  ncols = tmp.width();
76 
78 
79  QImage qima(ncols, nrows, QImage::Format_RGB32);
80  std::memcpy(output.buffer(),
81  tmp.scanLine(0),
82  output.nelements() * 4);
83 
84  return output;
85  }
86 
87 # endif // ! MLN_INCLUDE_ONLY
88 
89  } // end of namespace scribo::convert
90 
91 } // end of namespace scribo
92 
93 #endif // ! SCRIBO_CONVERT_FROM_QIMAGE_HH