Mercurial > hg > orthanc-stone
comparison Applications/Platforms/WebAssembly/WebAssemblyViewport.h @ 1591:5887a4f8594b
moving platform-specific files out of the "OrthancStone" folder
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Fri, 23 Oct 2020 13:15:03 +0200 |
parents | OrthancStone/Sources/Viewport/WebAssemblyViewport.h@1f812f4c95be |
children | 9a52bac0c2a7 |
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1590:7b963bccafef | 1591:5887a4f8594b |
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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 | |
22 #pragma once | |
23 | |
24 #include "../../../OrthancStone/Sources/OrthancStone.h" | |
25 | |
26 #if !defined(ORTHANC_ENABLE_WASM) | |
27 # error Macro ORTHANC_ENABLE_WASM must be defined | |
28 #endif | |
29 | |
30 #if ORTHANC_ENABLE_WASM != 1 | |
31 # error This file can only be used if targeting WebAssembly | |
32 #endif | |
33 | |
34 #include "../../../OrthancStone/Sources/Viewport/IViewport.h" | |
35 #include "../../../OrthancStone/Sources/Viewport/IViewportInteractor.h" | |
36 | |
37 #include <Compatibility.h> | |
38 | |
39 #include <emscripten.h> | |
40 #include <emscripten/html5.h> | |
41 | |
42 #include <memory> | |
43 #include <string> | |
44 #include <boost/enable_shared_from_this.hpp> | |
45 | |
46 namespace OrthancStone | |
47 { | |
48 class WebAssemblyViewport : public IViewport, | |
49 public boost::enable_shared_from_this<WebAssemblyViewport> | |
50 | |
51 { | |
52 private: | |
53 class WasmLock; | |
54 | |
55 std::string canvasId_; | |
56 std::string canvasCssSelector_; | |
57 std::unique_ptr<ICompositor> compositor_; | |
58 std::unique_ptr<ViewportController> controller_; | |
59 std::unique_ptr<IViewportInteractor> interactor_; | |
60 bool enableEmscriptenMouseEvents_; | |
61 unsigned int canvasWidth_; | |
62 unsigned int canvasHeight_; | |
63 | |
64 static EM_BOOL OnRequestAnimationFrame(double time, void *userData); | |
65 | |
66 static EM_BOOL OnResize(int eventType, const EmscriptenUiEvent *uiEvent, void *userData); | |
67 | |
68 static EM_BOOL OnMouseDown(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData); | |
69 | |
70 static EM_BOOL OnMouseMove(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData); | |
71 | |
72 static EM_BOOL OnMouseUp(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData); | |
73 | |
74 protected: | |
75 void Invalidate(); | |
76 | |
77 void ClearCompositor() | |
78 { | |
79 compositor_.reset(); | |
80 } | |
81 | |
82 bool HasCompositor() const | |
83 { | |
84 return compositor_.get() != NULL; | |
85 } | |
86 | |
87 void AcquireCompositor(ICompositor* compositor /* takes ownership */); | |
88 | |
89 virtual void Paint(ICompositor& compositor, | |
90 ViewportController& controller) = 0; | |
91 | |
92 /** | |
93 The second argument is temporary and should be deleted once the migration | |
94 to interactors is finished. It should be set to "true" for new applications. | |
95 */ | |
96 WebAssemblyViewport(const std::string& canvasId, | |
97 bool enableEmscriptenMouseEvents); | |
98 | |
99 void PostConstructor(); | |
100 | |
101 void RefreshCanvasSize(); | |
102 | |
103 unsigned int GetCanvasWidth() const | |
104 { | |
105 return canvasWidth_; | |
106 } | |
107 | |
108 unsigned int GetCanvasHeight() | |
109 { | |
110 return canvasHeight_; | |
111 } | |
112 | |
113 public: | |
114 virtual ILock* Lock() ORTHANC_OVERRIDE; | |
115 | |
116 ~WebAssemblyViewport(); | |
117 | |
118 /** | |
119 This method takes ownership | |
120 */ | |
121 void AcquireInteractor(IViewportInteractor* interactor); | |
122 | |
123 const std::string& GetCanvasId() const | |
124 { | |
125 return canvasId_; | |
126 } | |
127 | |
128 /** | |
129 emscripten functions requires the css selector for the canvas. This is | |
130 different from the canvas id (the syntax is '#mycanvasid') | |
131 */ | |
132 const std::string& GetCanvasCssSelector() const | |
133 { | |
134 return canvasCssSelector_; | |
135 } | |
136 | |
137 void FitForPrint(); | |
138 }; | |
139 } |