Mercurial > hg > orthanc-stone

comparison Framework/Widgets/CairoWidget.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 "CairoWidget.h"
34
35 #include "../Orthanc/Core/Images/ImageProcessing.h"
36 #include "../Orthanc/Core/OrthancException.h"
37
38 namespace OrthancStone
39 {
40 static bool IsAligned(const Orthanc::ImageAccessor& target)
41 {
42 // TODO
43 return true;
44 }
45
46
47 void CairoWidget::SetSize(unsigned int width,
48 unsigned int height)
49 {
50 surface_.SetSize(width, height);
51 }
52
53
54 bool CairoWidget::Render(Orthanc::ImageAccessor& target)
55 {
56 // Don't call the base class here, as
57 // "ClearBackgroundCairo()" is a faster alternative
58
59 if (IsAligned(target))
60 {
61 CairoSurface surface(target);
62 CairoContext context(surface);
63 ClearBackgroundCairo(context);
64 return RenderCairo(context);
65 }
66 else
67 {
68 CairoContext context(surface_);
69 ClearBackgroundCairo(context);
70
71 if (RenderCairo(context))
72 {
73 Orthanc::ImageProcessing::Copy(target, surface_.GetAccessor());
74 return true;
75 }
76 else
77 {
78 return false;
79 }
80 }
81 }
82
83
84 void CairoWidget::RenderMouseOver(Orthanc::ImageAccessor& target,
85 int x,
86 int y)
87 {
88 if (IsAligned(target))
89 {
90 CairoSurface surface(target);
91 CairoContext context(surface);
92 RenderMouseOverCairo(context, x, y);
93 }
94 else
95 {
96 Orthanc::ImageAccessor accessor = surface_.GetAccessor();
97 Orthanc::ImageProcessing::Copy(accessor, target);
98
99 CairoContext context(surface_);
100 RenderMouseOverCairo(context, x, y);
101
102 Orthanc::ImageProcessing::Copy(target, accessor);
103 }
104 }
105 }