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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 extern void UpdateStoneApplicationStatusFromCpp(const char* statusUpdateMessage);
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20
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21 // C++ methods accessible from JS
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22 extern void EMSCRIPTEN_KEEPALIVE CreateWasmApplication(ViewportHandle cppViewportHandle);
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23 extern void EMSCRIPTEN_KEEPALIVE SetStartupParameter(const char* keyc, const char* value);
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24
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25
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26 #ifdef __cplusplus
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27 }
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28 #endif
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29
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30 extern OrthancStone::IBasicApplication* CreateUserApplication(OrthancStone::MessageBroker& broker);
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31
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32 namespace OrthancStone {
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33
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34 // default Observer to trigger Viewport redraw when something changes in the Viewport
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35 class ViewportContentChangedObserver :
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36 public OrthancStone::IViewport::IObserver
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37 {
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38 private:
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39 // Flag to avoid flooding JavaScript with redundant Redraw requests
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40 bool isScheduled_;
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41
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42 public:
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43 ViewportContentChangedObserver() :
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44 isScheduled_(false)
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45 {
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46 }
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47
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48 void Reset()
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49 {
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50 isScheduled_ = false;
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51 }
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52
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53 virtual void OnViewportContentChanged(const OrthancStone::IViewport &viewport)
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54 {
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55 if (!isScheduled_)
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56 {
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57 ScheduleWebViewportRedrawFromCpp((ViewportHandle)&viewport); // loosing constness when transmitted to Web
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58 isScheduled_ = true;
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59 }
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60 }
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61 };
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62
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63 // default status bar to log messages on the console/stdout
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64 class StatusBar : public OrthancStone::IStatusBar
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65 {
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66 public:
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67 virtual void ClearMessage()
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68 {
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69 }
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70
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71 virtual void SetMessage(const std::string& message)
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72 {
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73 printf("%s\n", message.c_str());
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74 }
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75 };
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76 } |
