Mercurial > hg > orthanc-stone
view Applications/Platforms/WebAssembly/WebAssemblyViewport.h @ 1773:34eb41352dff
added missing Scene2D/CopyStyleConfigurator.cpp
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 12 May 2021 17:40:38 +0200 |
parents | 9ac2a65d4172 |
children | 3889ae96d2e9 |
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/** * Stone of Orthanc * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics * Department, University Hospital of Liege, Belgium * Copyright (C) 2017-2021 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 #include "../../../OrthancStone/Sources/OrthancStone.h" #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 "../../../OrthancStone/Sources/Viewport/IViewport.h" #include "../../../OrthancStone/Sources/Viewport/IViewportInteractor.h" #include <Compatibility.h> #include <emscripten.h> #include <emscripten/html5.h> #include <memory> #include <string> #include <vector> #include <boost/enable_shared_from_this.hpp> 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_; unsigned int canvasWidth_; unsigned int canvasHeight_; 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; /** The second argument is temporary and should be deleted once the migration to interactors is finished. It should be set to "true" for new applications. */ WebAssemblyViewport(const std::string& canvasId, bool enableEmscriptenMouseEvents); void PostConstructor(); /** * This method can be called to retrieve a cookie that can be passed to * C-style callbacks that expect the object to be passed as a void* * * This cookie is a resource and must be freed when it is guaranteed * not to be used anymore, with ReleaseObjectCookie */ void* CreateObjectCookie(); /** * This static method can be used to dereference a cookie (i.e. retrieve * a pointer to the underlying object) that has been created with * WebAssemblyViewport::CreateObjectCookie() * * If this method returns NULL, it basically means that the * WebAssemblyViewport has already been deleted and that you should NOT * attempt to use it! * * This method never releases the cookie (for other in-flight callbacks * could possibly require to cookie to be valid) * * If this method is called AFTER ReleaseObjectCookie has been called on * the same cookie, the behavior is undefined and things will CERTAINLY * go wrong. * * NEVER call this method on a void* that has not been generated by the * CreateObjectCookie method of this class */ static WebAssemblyViewport* DereferenceObjectCookie(void* cookie); /** * This method must be used when the object cookie will not be used anymore. * * You must call it when you are certain that no entity will attempt to * dereference the cookie. */ static void ReleaseObjectCookie(void* cookie); void RefreshCanvasSize(); unsigned int GetCanvasWidth() const { return canvasWidth_; } unsigned int GetCanvasHeight() { return canvasHeight_; } public: virtual ILock* Lock() ORTHANC_OVERRIDE; ~WebAssemblyViewport(); /** 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_; } void FitForPrint(); }; }