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1 #pragma once
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2
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3 #include <emscripten/emscripten.h>
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4
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5 #include <Framework/dev.h>
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6 #include <Framework/Viewport/WidgetViewport.h>
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7 #include <Framework/Widgets/LayerWidget.h>
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8 #include <Framework/Widgets/LayoutWidget.h>
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9 #include <Applications/IBasicApplication.h>
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10
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11 typedef OrthancStone::WidgetViewport* ViewportHandle; // the objects exchanged between JS and C++
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12
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13 #ifdef __cplusplus
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14 extern "C" {
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15 #endif
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16
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17 // JS methods accessible from C++
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18 extern void ScheduleWebViewportRedrawFromCpp(ViewportHandle cppViewportHandle);
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19
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20 // C++ methods accessible from JS
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21 extern void EMSCRIPTEN_KEEPALIVE CreateWasmApplication(ViewportHandle cppViewportHandle);
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23 #ifdef __cplusplus
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24 }
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25 #endif
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26
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27 extern OrthancStone::IBasicApplication* CreateUserApplication(OrthancStone::MessageBroker& broker);
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28
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29 namespace OrthancStone {
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30
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31 // default Ovserver to trigger Viewport redraw when something changes in the Viewport
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32 class ChangeObserver :
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33 public OrthancStone::IViewport::IObserver
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34 {
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35 private:
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36 // Flag to avoid flooding JavaScript with redundant Redraw requests
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37 bool isScheduled_;
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38
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39 public:
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40 ChangeObserver() :
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41 isScheduled_(false)
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42 {
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43 }
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44
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45 void Reset()
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46 {
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47 isScheduled_ = false;
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48 }
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49
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50 virtual void NotifyChange(const OrthancStone::IViewport &viewport)
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51 {
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52 if (!isScheduled_)
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53 {
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54 ScheduleWebViewportRedrawFromCpp((ViewportHandle)&viewport); // loosing constness when transmitted to Web
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55 isScheduled_ = true;
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56 }
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57 }
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58 };
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59
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60 // default status bar to log messages on the console/stdout
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61 class StatusBar : public OrthancStone::IStatusBar
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62 {
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63 public:
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64 virtual void ClearMessage()
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65 {
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66 }
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67
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68 virtual void SetMessage(const std::string& message)
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69 {
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70 printf("%s\n", message.c_str());
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71 }
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72 };
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73 } |
