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comparison Samples/WebAssembly/RtViewer/RtViewerWasm.cpp @ 1393:27e0a00bd3e8

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RtViewer SingleFrameViewer OK : wasm SDL single viewport other viewports ongoing
author Benjamin Golinvaux <bgo@osimis.io>
date Wed, 29 Apr 2020 15:54:18 +0200
parents 24bcff8ea58f
children 3e644f6fadd4
comparison
equal deleted inserted replaced
1392:ffdb82850e98 1393:27e0a00bd3e8
1 /**
2 * Stone of Orthanc
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
4 * Department, University Hospital of Liege, Belgium
5 * Copyright (C) 2017-2020 Osimis S.A., Belgium
6 *
7 * This program is free software: you can redistribute it and/or
8 * modify it under the terms of the GNU Affero General Public License
9 * as published by the Free Software Foundation, either version 3 of
10 * the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Affero General Public License for more details.
16 *
17 * You should have received a copy of the GNU Affero General Public License
18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
19 **/
20
21 #include "RtViewer.h"
22 #include "SampleHelpers.h"
23
24 // Stone of Orthanc includes
25 #include <Framework/Loaders/WebAssemblyLoadersContext.h>
26 //#include <Framework/OpenGL/WebAssemblyOpenGLContext.h>
27 #include <Framework/Viewport/WebGLViewport.h>
28 #include <Framework/StoneException.h>
29 #include <Framework/StoneInitialization.h>
30
31 #include <Framework/Loaders/WebAssemblyLoadersContext.h>
32
33 #include <Framework/StoneException.h>
34 #include <Framework/StoneInitialization.h>
35
36 #include <Core/Toolbox.h>
37
38 #include <boost/program_options.hpp>
39 #include <boost/shared_ptr.hpp>
40 // #include <boost/pointer_cast.hpp> this include might be necessary in more recent boost versions
41
42 #include <emscripten.h>
43 #include <emscripten/html5.h>
44
45
46 #define DISPATCH_JAVASCRIPT_EVENT(name) \
47 EM_ASM( \
48 const customEvent = document.createEvent("CustomEvent"); \
49 customEvent.initCustomEvent(name, false, false, undefined); \
50 window.dispatchEvent(customEvent); \
51 );
52
53 #define EXTERN_CATCH_EXCEPTIONS \
54 catch (Orthanc::OrthancException& e) \
55 { \
56 LOG(ERROR) << "OrthancException: " << e.What(); \
57 DISPATCH_JAVASCRIPT_EVENT("StoneException"); \
58 } \
59 catch (OrthancStone::StoneException& e) \
60 { \
61 LOG(ERROR) << "StoneException: " << e.What(); \
62 DISPATCH_JAVASCRIPT_EVENT("StoneException"); \
63 } \
64 catch (std::exception& e) \
65 { \
66 LOG(ERROR) << "Runtime error: " << e.what(); \
67 DISPATCH_JAVASCRIPT_EVENT("StoneException"); \
68 } \
69 catch (...) \
70 { \
71 LOG(ERROR) << "Native exception"; \
72 DISPATCH_JAVASCRIPT_EVENT("StoneException"); \
73 }
74
75 namespace OrthancStone
76 {
77 void RtViewerApp::CreateViewport()
78 {
79 viewport_ = WebGLViewport::Create("mycanvas1");
80 }
81
82 void RtViewerApp::TakeScreenshot(const std::string& target,
83 unsigned int canvasWidth,
84 unsigned int canvasHeight)
85 {
86 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented);
87 }
88
89
90 void RtViewerApp::RunWasm()
91 {
92 {
93 std::unique_ptr<IViewport::ILock> lock(viewport_->Lock());
94 ViewportController& controller = lock->GetController();
95 Scene2D& scene = controller.GetScene();
96 ICompositor& compositor = lock->GetCompositor();
97
98 controller.FitContent(compositor.GetCanvasWidth(), compositor.GetCanvasHeight());
99
100 compositor.SetFont(0, Orthanc::EmbeddedResources::UBUNTU_FONT,
101 FONT_SIZE_0, Orthanc::Encoding_Latin1);
102 compositor.SetFont(1, Orthanc::EmbeddedResources::UBUNTU_FONT,
103 FONT_SIZE_1, Orthanc::Encoding_Latin1);
104 }
105
106 loadersContext_.reset(new OrthancStone::WebAssemblyLoadersContext(1, 4, 1));
107
108 // we are in WASM --> downcast to concrete type
109 boost::shared_ptr<WebAssemblyLoadersContext> loadersContext =
110 boost::dynamic_pointer_cast<WebAssemblyLoadersContext>(loadersContext_);
111
112 if (HasArgument("orthanc"))
113 loadersContext->SetLocalOrthanc(GetArgument("orthanc"));
114 else
115 loadersContext->SetLocalOrthanc("..");
116
117 loadersContext->SetDicomCacheSize(128 * 1024 * 1024); // 128MB
118
119 PrepareLoadersAndSlicers();
120
121 DefaultViewportInteractor interactor;
122 }
123 }
124
125 extern "C"
126 {
127 boost::shared_ptr<OrthancStone::RtViewerApp> g_app;
128
129 int main(int argc, char const *argv[])
130 {
131 try
132 {
133 OrthancStone::StoneInitialize();
134 Orthanc::Logging::Initialize();
135 Orthanc::Logging::EnableTraceLevel(true);
136
137 LOG(WARNING) << "Initializing native Stone";
138
139 LOG(WARNING) << "Compiled with Emscripten " << __EMSCRIPTEN_major__
140 << "." << __EMSCRIPTEN_minor__
141 << "." << __EMSCRIPTEN_tiny__;
142
143 LOG(INFO) << "Endianness: " << Orthanc::EnumerationToString(Orthanc::Toolbox::DetectEndianness());
144
145 g_app = OrthancStone::RtViewerApp::Create();
146
147 DISPATCH_JAVASCRIPT_EVENT("WasmModuleInitialized");
148 }
149 EXTERN_CATCH_EXCEPTIONS;
150 }
151
152 EMSCRIPTEN_KEEPALIVE
153 void Initialize(const char* canvasId)
154 {
155 try
156 {
157 g_app->RunWasm();
158 }
159 EXTERN_CATCH_EXCEPTIONS;
160 }
161
162 EMSCRIPTEN_KEEPALIVE
163 void SetArgument(const char* key, const char* value)
164 {
165 // This is called for each GET argument (cf. "app.js")
166 LOG(INFO) << "Received GET argument: [" << key << "] = [" << value << "]";
167 g_app->SetArgument(key, value);
168 }
169
170 }