Mercurial > hg > orthanc-stone
diff OrthancStone/Sources/Viewport/WebAssemblyViewport.h @ 1512:244ad1e4e76a
reorganization of folders
author | Sebastien Jodogne <s.jodogne@gmail.com> |
---|---|
date | Tue, 07 Jul 2020 16:21:02 +0200 |
parents | Framework/Viewport/WebAssemblyViewport.h@6e43cac7833c |
children | a48ae10857b1 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/OrthancStone/Sources/Viewport/WebAssemblyViewport.h Tue Jul 07 16:21:02 2020 +0200 @@ -0,0 +1,123 @@ +/** + * 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/>. + **/ + + +#pragma once + +#if !defined(ORTHANC_ENABLE_WASM) +# error Macro ORTHANC_ENABLE_WASM must be defined +#endif + +#if ORTHANC_ENABLE_WASM != 1 +# error This file can only be used if targeting WebAssembly +#endif + +#include "IViewport.h" + +#include <Compatibility.h> + +#include <emscripten.h> +#include <emscripten/html5.h> + +#include <memory> +#include <string> + +namespace OrthancStone +{ + class WebAssemblyViewport : public IViewport, + public boost::enable_shared_from_this<WebAssemblyViewport> + + { + private: + class WasmLock; + + std::string canvasId_; + std::string canvasCssSelector_; + std::unique_ptr<ICompositor> compositor_; + std::unique_ptr<ViewportController> controller_; + std::unique_ptr<IViewportInteractor> interactor_; + bool enableEmscriptenMouseEvents_; + + static EM_BOOL OnRequestAnimationFrame(double time, void *userData); + + static EM_BOOL OnResize(int eventType, const EmscriptenUiEvent *uiEvent, void *userData); + + static EM_BOOL OnMouseDown(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData); + + static EM_BOOL OnMouseMove(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData); + + static EM_BOOL OnMouseUp(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData); + + protected: + void Invalidate(); + + void ClearCompositor() + { + compositor_.reset(); + } + + bool HasCompositor() const + { + return compositor_.get() != NULL; + } + + void AcquireCompositor(ICompositor* compositor /* takes ownership */); + + virtual void Paint(ICompositor& compositor, + ViewportController& controller) = 0; + + virtual void UpdateSize(ICompositor& compositor) = 0; + + /** + The second argument is temporary and should be deleted once the migration + to interactors is finished. + */ + WebAssemblyViewport(const std::string& canvasId, + bool enableEmscriptenMouseEvents = true); + + void PostConstructor(); + + public: + virtual ILock* Lock() ORTHANC_OVERRIDE; + + ~WebAssemblyViewport(); + + virtual void UpdateCanvasSize(); + + /** + This method takes ownership + */ + void AcquireInteractor(IViewportInteractor* interactor); + + const std::string& GetCanvasId() const + { + return canvasId_; + } + + /** + emscripten functions requires the css selector for the canvas. This is + different from the canvas id (the syntax is '#mycanvasid') + */ + const std::string& GetCanvasCssSelector() const + { + return canvasCssSelector_; + } + }; +}