Mercurial > hg > orthanc-stone
comparison Framework/Widgets/WidgetBase.cpp @ 0:351ab0da0150
initial commit
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Fri, 14 Oct 2016 15:34:11 +0200 |
parents | |
children | ff1e935768e7 |
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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 "WidgetBase.h" | |
34 | |
35 #include "../Orthanc/Core/OrthancException.h" | |
36 #include "../Orthanc/Core/Images/ImageProcessing.h" | |
37 #include "../Orthanc/Core/Logging.h" | |
38 | |
39 namespace OrthancStone | |
40 { | |
41 void WidgetBase::ClearBackgroundOrthanc(Orthanc::ImageAccessor& target) const | |
42 { | |
43 // Clear the background using Orthanc | |
44 | |
45 if (backgroundCleared_) | |
46 { | |
47 Orthanc::ImageProcessing::Set(target, | |
48 backgroundColor_[0], | |
49 backgroundColor_[1], | |
50 backgroundColor_[2], | |
51 255 /* alpha */); | |
52 } | |
53 } | |
54 | |
55 | |
56 void WidgetBase::ClearBackgroundCairo(CairoContext& context) const | |
57 { | |
58 // Clear the background using Cairo | |
59 | |
60 if (IsBackgroundCleared()) | |
61 { | |
62 uint8_t red, green, blue; | |
63 GetBackgroundColor(red, green, blue); | |
64 | |
65 context.SetSourceColor(red, green, blue); | |
66 cairo_paint(context.GetObject()); | |
67 } | |
68 } | |
69 | |
70 | |
71 void WidgetBase::ClearBackgroundCairo(Orthanc::ImageAccessor& target) const | |
72 { | |
73 CairoSurface surface(target); | |
74 CairoContext context(surface); | |
75 ClearBackgroundCairo(context); | |
76 } | |
77 | |
78 | |
79 void WidgetBase::NotifyChange() | |
80 { | |
81 observers_.NotifyChange(this); | |
82 } | |
83 | |
84 | |
85 void WidgetBase::UpdateStatusBar(const std::string& message) | |
86 { | |
87 if (statusBar_ != NULL) | |
88 { | |
89 statusBar_->SetMessage(message); | |
90 } | |
91 } | |
92 | |
93 | |
94 void WidgetBase::WorkerThread(WidgetBase* that) | |
95 { | |
96 while (that->started_) | |
97 { | |
98 that->UpdateStep(); | |
99 } | |
100 } | |
101 | |
102 | |
103 WidgetBase::WidgetBase() : | |
104 statusBar_(NULL), | |
105 started_(false), | |
106 backgroundCleared_(false) | |
107 { | |
108 backgroundColor_[0] = 0; | |
109 backgroundColor_[1] = 0; | |
110 backgroundColor_[2] = 0; | |
111 } | |
112 | |
113 | |
114 void WidgetBase::SetBackgroundColor(uint8_t red, | |
115 uint8_t green, | |
116 uint8_t blue) | |
117 { | |
118 backgroundColor_[0] = red; | |
119 backgroundColor_[1] = green; | |
120 backgroundColor_[2] = blue; | |
121 } | |
122 | |
123 void WidgetBase::GetBackgroundColor(uint8_t& red, | |
124 uint8_t& green, | |
125 uint8_t& blue) const | |
126 { | |
127 red = backgroundColor_[0]; | |
128 green = backgroundColor_[1]; | |
129 blue = backgroundColor_[2]; | |
130 } | |
131 | |
132 | |
133 void WidgetBase::Register(IChangeObserver& observer) | |
134 { | |
135 observers_.Register(observer); | |
136 } | |
137 | |
138 | |
139 void WidgetBase::Unregister(IChangeObserver& observer) | |
140 { | |
141 observers_.Unregister(observer); | |
142 } | |
143 | |
144 | |
145 void WidgetBase::Start() | |
146 { | |
147 if (started_) | |
148 { | |
149 LOG(ERROR) << "Cannot Start() twice"; | |
150 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
151 } | |
152 | |
153 started_ = true; | |
154 | |
155 if (HasUpdateThread()) | |
156 { | |
157 thread_ = boost::thread(WorkerThread, this); | |
158 } | |
159 } | |
160 | |
161 | |
162 void WidgetBase::Stop() | |
163 { | |
164 if (!started_) | |
165 { | |
166 LOG(ERROR) << "Cannot Stop() if Start() has not been invoked"; | |
167 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
168 } | |
169 | |
170 started_ = false; | |
171 | |
172 if (HasUpdateThread() && | |
173 thread_.joinable()) | |
174 { | |
175 thread_.join(); | |
176 } | |
177 } | |
178 | |
179 | |
180 bool WidgetBase::Render(Orthanc::ImageAccessor& surface) | |
181 { | |
182 #if 0 | |
183 ClearBackgroundOrthanc(surface); | |
184 #else | |
185 ClearBackgroundCairo(surface); // Faster than Orthanc | |
186 #endif | |
187 | |
188 return true; | |
189 } | |
190 } |