Mercurial > hg > orthanc-stone

comparison Framework/Widgets/WidgetBase.cpp @ 46:766d31dc5716 wasm

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removing threads for wasm
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 19 Apr 2017 14:33:06 +0200
parents 7207a407bcd8
children 25befef48c35
comparison
equal deleted inserted replaced
45:ecd96e563929 46:766d31dc5716
90 statusBar_->SetMessage(message); 90 statusBar_->SetMessage(message);
91 } 91 }
92 } 92 }
93 93
94 94
95 void WidgetBase::WorkerThread(WidgetBase* that)
96 {
97 while (that->started_)
98 {
99 that->UpdateStep();
100 }
101 }
102
103
104 WidgetBase::WidgetBase() : 95 WidgetBase::WidgetBase() :
105 statusBar_(NULL), 96 statusBar_(NULL),
106 started_(false), 97 started_(false),
107 backgroundCleared_(false) 98 backgroundCleared_(false)
108 { 99 {
131 } 122 }
132 123
133 124
134 void WidgetBase::Register(IChangeObserver& observer) 125 void WidgetBase::Register(IChangeObserver& observer)
135 { 126 {
127 if (started_)
128 {
129 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
130 }
131
136 observers_.Register(observer); 132 observers_.Register(observer);
137 } 133 }
138 134
139 135
140 void WidgetBase::Unregister(IChangeObserver& observer) 136 void WidgetBase::Unregister(IChangeObserver& observer)
141 { 137 {
138 if (started_)
139 {
140 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
141 }
142
142 observers_.Unregister(observer); 143 observers_.Unregister(observer);
143 } 144 }
144 145
145 146
146 void WidgetBase::Start() 147 void WidgetBase::Start()
147 { 148 {
148 if (started_) 149 if (started_)
149 { 150 {
150 LOG(ERROR) << "Cannot Start() twice";
151 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); 151 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
152 } 152 }
153 153 else
154 started_ = true;
155
156 if (HasUpdateThread())
157 { 154 {
158 thread_ = boost::thread(WorkerThread, this); 155 started_ = true;
159 } 156 }
160 } 157 }
161 158
159
160 void WidgetBase::Stop()
161 {
162 if (started_)
163 {
164 started_ = false;
165 }
166 else
167 {
168 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
169 }
170 }
162 171
163 void WidgetBase::Stop() 172
173 bool WidgetBase::Render(Orthanc::ImageAccessor& surface)
164 { 174 {
165 if (!started_) 175 if (!started_)
166 { 176 {
167 LOG(ERROR) << "Cannot Stop() if Start() has not been invoked";
168 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); 177 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
169 } 178 }
170 179
171 started_ = false;
172
173 if (HasUpdateThread() &&
174 thread_.joinable())
175 {
176 thread_.join();
177 }
178 }
179
180
181 bool WidgetBase::Render(Orthanc::ImageAccessor& surface)
182 {
183 #if 0 180 #if 0
184 ClearBackgroundOrthanc(surface); 181 ClearBackgroundOrthanc(surface);
185 #else 182 #else
186 ClearBackgroundCairo(surface); // Faster than Orthanc 183 ClearBackgroundCairo(surface); // Faster than Orthanc
187 #endif 184 #endif
188 185
189 return true; 186 return true;
190 } 187 }
188
189
190 void WidgetBase::UpdateContent()
191 {
192 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
193 }
191 } 194 }