Mercurial > hg > orthanc-stone
annotate Applications/Platforms/WebAssembly/WebAssemblyViewport.h @ 1618:9a52bac0c2a7
Added code to clear pending calls to RequestAnimationFrame
author | Benjamin Golinvaux <bgo@osimis.io> |
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date | Mon, 02 Nov 2020 17:54:18 +0100 |
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1 /** |
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2 * Stone of Orthanc |
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics |
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4 * Department, University Hospital of Liege, Belgium |
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5 * Copyright (C) 2017-2020 Osimis S.A., Belgium |
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6 * |
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7 * This program is free software: you can redistribute it and/or |
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8 * modify it under the terms of the GNU Affero General Public License |
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9 * as published by the Free Software Foundation, either version 3 of |
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10 * the License, or (at your option) any later version. |
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11 * |
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12 * This program is distributed in the hope that it will be useful, but |
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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15 * Affero General Public License for more details. |
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16 * |
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17 * You should have received a copy of the GNU Affero General Public License |
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
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19 **/ |
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20 |
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21 |
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22 #pragma once |
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23 |
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24 #include "../../../OrthancStone/Sources/OrthancStone.h" |
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25 |
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26 #if !defined(ORTHANC_ENABLE_WASM) |
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27 # error Macro ORTHANC_ENABLE_WASM must be defined |
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28 #endif |
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29 |
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30 #if ORTHANC_ENABLE_WASM != 1 |
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31 # error This file can only be used if targeting WebAssembly |
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32 #endif |
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33 |
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34 #include "../../../OrthancStone/Sources/Viewport/IViewport.h" |
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35 #include "../../../OrthancStone/Sources/Viewport/IViewportInteractor.h" |
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36 |
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37 #include <Compatibility.h> |
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38 |
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39 #include <emscripten.h> |
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40 #include <emscripten/html5.h> |
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41 |
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42 #include <memory> |
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43 #include <string> |
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44 #include <vector> |
1558 | 45 #include <boost/enable_shared_from_this.hpp> |
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46 |
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47 namespace OrthancStone |
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48 { |
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49 class WebAssemblyViewport : public IViewport, |
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50 public boost::enable_shared_from_this<WebAssemblyViewport> |
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51 |
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52 { |
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53 private: |
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54 class WasmLock; |
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55 |
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56 std::string canvasId_; |
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57 std::string canvasCssSelector_; |
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58 std::unique_ptr<ICompositor> compositor_; |
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59 std::unique_ptr<ViewportController> controller_; |
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60 std::unique_ptr<IViewportInteractor> interactor_; |
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61 bool enableEmscriptenMouseEvents_; |
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62 unsigned int canvasWidth_; |
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63 unsigned int canvasHeight_; |
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64 std::vector<long> animationFrameCallbackIds_; |
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65 |
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66 static EM_BOOL OnRequestAnimationFrame(double time, void *userData); |
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67 |
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68 static EM_BOOL OnResize(int eventType, const EmscriptenUiEvent *uiEvent, void *userData); |
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69 |
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70 static EM_BOOL OnMouseDown(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData); |
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71 |
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72 static EM_BOOL OnMouseMove(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData); |
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73 |
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74 static EM_BOOL OnMouseUp(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData); |
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75 |
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76 protected: |
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77 void Invalidate(); |
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78 |
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79 void ClearCompositor() |
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80 { |
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81 compositor_.reset(); |
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82 } |
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83 |
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84 bool HasCompositor() const |
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85 { |
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86 return compositor_.get() != NULL; |
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87 } |
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88 |
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89 void AcquireCompositor(ICompositor* compositor /* takes ownership */); |
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90 |
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91 virtual void Paint(ICompositor& compositor, |
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92 ViewportController& controller) = 0; |
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93 |
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94 /** |
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95 The second argument is temporary and should be deleted once the migration |
1571 | 96 to interactors is finished. It should be set to "true" for new applications. |
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97 */ |
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98 WebAssemblyViewport(const std::string& canvasId, |
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100 |
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101 void PostConstructor(); |
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102 |
1577 | 103 void RefreshCanvasSize(); |
104 | |
105 unsigned int GetCanvasWidth() const | |
106 { | |
107 return canvasWidth_; | |
108 } | |
109 | |
110 unsigned int GetCanvasHeight() | |
111 { | |
112 return canvasHeight_; | |
113 } | |
114 | |
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115 public: |
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116 virtual ILock* Lock() ORTHANC_OVERRIDE; |
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117 |
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118 ~WebAssemblyViewport(); |
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119 |
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120 /** |
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121 This method takes ownership |
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122 */ |
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123 void AcquireInteractor(IViewportInteractor* interactor); |
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124 |
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125 const std::string& GetCanvasId() const |
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126 { |
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127 return canvasId_; |
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128 } |
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129 |
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130 /** |
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131 emscripten functions requires the css selector for the canvas. This is |
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132 different from the canvas id (the syntax is '#mycanvasid') |
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133 */ |
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134 const std::string& GetCanvasCssSelector() const |
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135 { |
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136 return canvasCssSelector_; |
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137 } |
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1578 | 139 void FitForPrint(); |
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140 }; |
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141 } |