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comparison Framework/Viewport/CairoContext.cpp @ 0:351ab0da0150

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initial commit
author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 14 Oct 2016 15:34:11 +0200
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children ff1e935768e7
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-1:000000000000 0:351ab0da0150
1 /**
2 * Stone of Orthanc
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
4 * Department, University Hospital of Liege, Belgium
5 *
6 * This program is free software: you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation, either version 3 of the
9 * License, or (at your option) any later version.
10 *
11 * In addition, as a special exception, the copyright holders of this
12 * program give permission to link the code of its release with the
13 * OpenSSL project's "OpenSSL" library (or with modified versions of it
14 * that use the same license as the "OpenSSL" library), and distribute
15 * the linked executables. You must obey the GNU General Public License
16 * in all respects for all of the code used other than "OpenSSL". If you
17 * modify file(s) with this exception, you may extend this exception to
18 * your version of the file(s), but you are not obligated to do so. If
19 * you do not wish to do so, delete this exception statement from your
20 * version. If you delete this exception statement from all source files
21 * in the program, then also delete it here.
22 *
23 * This program is distributed in the hope that it will be useful, but
24 * WITHOUT ANY WARRANTY; without even the implied warranty of
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
26 * General Public License for more details.
27 *
28 * You should have received a copy of the GNU General Public License
29 * along with this program. If not, see <http://www.gnu.org/licenses/>.
30 **/
31
32
33 #include "CairoContext.h"
34
35 #include "../Orthanc/Core/Logging.h"
36 #include "../Orthanc/Core/OrthancException.h"
37
38 namespace OrthancStone
39 {
40 CairoContext::CairoContext(CairoSurface& surface)
41 {
42 context_ = cairo_create(surface.GetObject());
43 if (!context_)
44 {
45 LOG(ERROR) << "Cannot create Cairo drawing context";
46 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
47 }
48 }
49
50
51 CairoContext::~CairoContext()
52 {
53 if (context_ != NULL)
54 {
55 cairo_destroy(context_);
56 context_ = NULL;
57 }
58 }
59
60
61 void CairoContext::SetSourceColor(uint8_t red,
62 uint8_t green,
63 uint8_t blue)
64 {
65 cairo_set_source_rgb(context_,
66 static_cast<float>(red) / 255.0f,
67 static_cast<float>(green) / 255.0f,
68 static_cast<float>(blue) / 255.0f);
69 }
70 }