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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/IStoneApplication.h>
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10 #include <Platforms/Wasm/WasmPlatformApplicationAdapter.h>
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11
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12 typedef OrthancStone::WidgetViewport* ViewportHandle; // the objects exchanged between JS and C++
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13
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14 #ifdef __cplusplus
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15 extern "C" {
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16 #endif
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17
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18 // JS methods accessible from C++
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19 extern void ScheduleWebViewportRedrawFromCpp(ViewportHandle cppViewportHandle);
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20 extern void UpdateStoneApplicationStatusFromCpp(const char* statusUpdateMessage);
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21
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22 // C++ methods accessible from JS
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23 extern void EMSCRIPTEN_KEEPALIVE CreateWasmApplication(ViewportHandle cppViewportHandle);
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24 extern void EMSCRIPTEN_KEEPALIVE SetStartupParameter(const char* keyc, const char* value);
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25
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26
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27 #ifdef __cplusplus
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28 }
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29 #endif
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30
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31 // these methods must be implemented in the custom app "mainWasm.cpp"
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32 extern OrthancStone::IStoneApplication* CreateUserApplication(OrthancStone::MessageBroker& broker);
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33 extern OrthancStone::WasmPlatformApplicationAdapter* CreateWasmApplicationAdapter(OrthancStone::MessageBroker& broker, OrthancStone::IStoneApplication* application);
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34
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35 namespace OrthancStone {
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36
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37 // default Observer to trigger Viewport redraw when something changes in the Viewport
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38 class ViewportContentChangedObserver :
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39 public OrthancStone::IViewport::IObserver
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40 {
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41 private:
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42 // Flag to avoid flooding JavaScript with redundant Redraw requests
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43 bool isScheduled_;
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44
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45 public:
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46 ViewportContentChangedObserver() :
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47 isScheduled_(false)
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48 {
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49 }
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50
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51 void Reset()
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52 {
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53 isScheduled_ = false;
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54 }
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55
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56 virtual void OnViewportContentChanged(const OrthancStone::IViewport &viewport)
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57 {
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58 if (!isScheduled_)
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59 {
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60 ScheduleWebViewportRedrawFromCpp((ViewportHandle)&viewport); // loosing constness when transmitted to Web
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61 isScheduled_ = true;
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62 }
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63 }
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64 };
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65
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66 // default status bar to log messages on the console/stdout
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67 class StatusBar : public OrthancStone::IStatusBar
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68 {
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69 public:
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70 virtual void ClearMessage()
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71 {
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72 }
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73
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74 virtual void SetMessage(const std::string& message)
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75 {
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76 printf("%s\n", message.c_str());
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77 }
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78 };
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79 } |
