Mercurial > hg > orthanc-stone
view Samples/WebAssembly/RtViewer/RtViewerWasm.cpp @ 1425:95674f9c169a
fix
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Fri, 15 May 2020 12:28:51 +0200 |
parents | 5d7ee14dc1eb |
children | 15173a383a00 |
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/** * Stone of Orthanc * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics * Department, University Hospital of Liege, Belgium * Copyright (C) 2017-2020 Osimis S.A., Belgium * * This program is free software: you can redistribute it and/or * modify it under the terms of the GNU Affero General Public License * as published by the Free Software Foundation, either version 3 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. **/ #include "RtViewerApp.h" #include "RtViewerView.h" #include "SampleHelpers.h" // Stone of Orthanc includes #include <Framework/Loaders/WebAssemblyLoadersContext.h> //#include <Framework/OpenGL/WebAssemblyOpenGLContext.h> #include <Framework/Viewport/WebGLViewport.h> #include <Framework/StoneException.h> #include <Framework/StoneInitialization.h> #include <Framework/Loaders/WebAssemblyLoadersContext.h> #include <Framework/StoneException.h> #include <Framework/StoneInitialization.h> #include <Core/Toolbox.h> #include <boost/program_options.hpp> #include <boost/shared_ptr.hpp> // #include <boost/pointer_cast.hpp> this include might be necessary in more recent boost versions #include <emscripten.h> #include <emscripten/html5.h> #define DISPATCH_JAVASCRIPT_EVENT(name) \ EM_ASM( \ const customEvent = document.createEvent("CustomEvent"); \ customEvent.initCustomEvent(name, false, false, undefined); \ window.dispatchEvent(customEvent); \ ); #define EXTERN_CATCH_EXCEPTIONS \ catch (Orthanc::OrthancException& e) \ { \ LOG(ERROR) << "OrthancException: " << e.What(); \ DISPATCH_JAVASCRIPT_EVENT("StoneException"); \ } \ catch (OrthancStone::StoneException& e) \ { \ LOG(ERROR) << "StoneException: " << e.What(); \ DISPATCH_JAVASCRIPT_EVENT("StoneException"); \ } \ catch (std::exception& e) \ { \ LOG(ERROR) << "Runtime error: " << e.what(); \ DISPATCH_JAVASCRIPT_EVENT("StoneException"); \ } \ catch (...) \ { \ LOG(ERROR) << "Native exception"; \ DISPATCH_JAVASCRIPT_EVENT("StoneException"); \ } namespace OrthancStone { // typedef EM_BOOL (*OnMouseWheelFunc)(int eventType, const EmscriptenWheelEvent* wheelEvent, void* userData); EM_BOOL RtViewerView_Scroll(int eventType, const EmscriptenWheelEvent* wheelEvent, void* userData) { RtViewerView* that = reinterpret_cast<RtViewerView*>(userData); int delta = 0; if (wheelEvent->deltaY < 0) delta = -1; if (wheelEvent->deltaY > 0) delta = 1; that->Scroll(delta); return 1; } boost::shared_ptr<IViewport> RtViewerView::CreateViewport( const std::string& canvasId) { boost::shared_ptr<IViewport> viewport = WebGLViewport::Create(canvasId); void* userData = reinterpret_cast<void*>(this); // manually add the mouse wheel handler std::string selector = "#" + canvasId; emscripten_set_wheel_callback_on_thread( selector.c_str(), userData, false, &RtViewerView_Scroll, EM_CALLBACK_THREAD_CONTEXT_CALLING_THREAD); return viewport; } void RtViewerView::TakeScreenshot(const std::string& target, unsigned int canvasWidth, unsigned int canvasHeight) { throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); } void RtViewerApp::RunWasm() { loadersContext_.reset(new OrthancStone::WebAssemblyLoadersContext(1, 4, 1)); // we are in WASM --> downcast to concrete type boost::shared_ptr<WebAssemblyLoadersContext> loadersContext = boost::dynamic_pointer_cast<WebAssemblyLoadersContext>(loadersContext_); if (HasArgument("orthanc")) loadersContext->SetLocalOrthanc(GetArgument("orthanc")); else loadersContext->SetLocalOrthanc(".."); loadersContext->SetDicomCacheSize(128 * 1024 * 1024); // 128MB CreateLoaders(); CreateView("RtViewer_Axial", VolumeProjection_Axial); CreateView("RtViewer_Coronal", VolumeProjection_Coronal); CreateView("RtViewer_Sagittal", VolumeProjection_Sagittal); for (size_t i = 0; i < views_.size(); ++i) { views_[i]->PrepareViewport(); } StartLoaders(); DefaultViewportInteractor interactor; } } extern "C" { boost::shared_ptr<OrthancStone::RtViewerApp> g_app; int main(int argc, char const *argv[]) { try { OrthancStone::StoneInitialize(); Orthanc::Logging::Initialize(); Orthanc::Logging::EnableTraceLevel(true); LOG(WARNING) << "Initializing native Stone"; LOG(WARNING) << "Compiled with Emscripten " << __EMSCRIPTEN_major__ << "." << __EMSCRIPTEN_minor__ << "." << __EMSCRIPTEN_tiny__; LOG(INFO) << "Endianness: " << Orthanc::EnumerationToString(Orthanc::Toolbox::DetectEndianness()); g_app = OrthancStone::RtViewerApp::Create(); DISPATCH_JAVASCRIPT_EVENT("WasmModuleInitialized"); } EXTERN_CATCH_EXCEPTIONS; } EMSCRIPTEN_KEEPALIVE void Initialize(const char* canvasId) { try { g_app->RunWasm(); } EXTERN_CATCH_EXCEPTIONS; } EMSCRIPTEN_KEEPALIVE void SetArgument(const char* key, const char* value) { // This is called for each GET argument (cf. "app.js") LOG(INFO) << "Received GET argument: [" << key << "] = [" << value << "]"; g_app->SetArgument(key, value); } }