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annotate Framework/Viewport/WebAssemblyViewport.h @ 1239:ce3052f28f2e toa2019122001

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Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
author Benjamin Golinvaux <bgo@osimis.io>
date Fri, 20 Dec 2019 15:44:20 +0100
parents 391fb6d6905d
children a4bb8c2dd211 2d8ab34c8c91
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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) 2017-2019 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 "../OpenGL/WebAssemblyOpenGLContext.h"
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25 #include "../Scene2D/OpenGLCompositor.h"
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26 #include "../Scene2D/CairoCompositor.h"
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27 #include "ViewportBase.h"
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28
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29 namespace OrthancStone
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30 {
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31 class WebAssemblyViewport : public ViewportBase
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32 {
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33 private:
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34 std::string canvasIdentifier_;
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35
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36 public:
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37 WebAssemblyViewport(const std::string& canvasIdentifier)
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38 : canvasIdentifier_(canvasIdentifier)
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39 {
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40 }
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41
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42 WebAssemblyViewport(const std::string& canvasIdentifier,
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43 boost::shared_ptr<Scene2D>& scene)
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44 : ViewportBase(scene)
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45 , canvasIdentifier_(canvasIdentifier)
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46 {
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47 }
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48
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49 const std::string& GetCanvasIdentifier() const
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50 {
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51 return canvasIdentifier_;
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52 }
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53 };
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54
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55
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56 class WebAssemblyOpenGLViewport : public WebAssemblyViewport
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57 {
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58 private:
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59 OpenGL::WebAssemblyOpenGLContext context_;
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60 std::auto_ptr<OpenGLCompositor> compositor_;
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61 double cssWidth_;
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62 double cssHeight_;
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63 int pixelWidth_;
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64 int pixelHeight_;
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65
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66 private:
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67 void UpdateSizeIfNeeded();
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68
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69 public:
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70 WebAssemblyOpenGLViewport(const std::string& canvas);
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71
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72 WebAssemblyOpenGLViewport(const std::string& canvas,
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73 boost::shared_ptr<Scene2D>& scene);
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74
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75 // This function must be called each time the browser window is resized
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76 void UpdateSize();
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77
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78 virtual bool HasCompositor() const ORTHANC_OVERRIDE
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79 {
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80 return (compositor_.get() != NULL);
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81 }
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82
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83 bool IsContextLost()
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84 {
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85 return context_.IsContextLost();
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86 }
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87
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88 virtual ICompositor& GetCompositor() ORTHANC_OVERRIDE;
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89
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90 virtual void Refresh() ORTHANC_OVERRIDE;
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91
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92 // this does NOT return whether the context is lost! This is called to
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93 // tell Stone that the context has been lost
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94 bool OpenGLContextLost();
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95
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96 // This should be called to indicate that the context has been lost
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97 bool OpenGLContextRestored();
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98
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99 private:
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100 void DisableCompositor();
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101 void RestoreCompositor();
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102
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103 void RegisterContextCallbacks();
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104 };
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105
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106
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107 class WebAssemblyCairoViewport : public WebAssemblyViewport
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108 {
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109 private:
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110 CairoCompositor compositor_;
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111 std::string canvas_;
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112
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113 public:
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114 WebAssemblyCairoViewport(const std::string& canvas);
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115
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116 WebAssemblyCairoViewport(const std::string& canvas,
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117 boost::shared_ptr<Scene2D>& scene);
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118
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119 void UpdateSize();
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120
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121 virtual void Refresh() ORTHANC_OVERRIDE;
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122
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123 virtual bool HasCompositor() const ORTHANC_OVERRIDE
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124 {
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125 return true;
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126 }
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127
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128 virtual ICompositor& GetCompositor() ORTHANC_OVERRIDE
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129 {
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130 return compositor_;
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131 }
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132 };
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133 }