Mercurial > hg > orthanc-stone

annotate Framework/Viewport/WebAssemblyViewport.cpp @ 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 3c9529edf5fd
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 #include "WebAssemblyViewport.h"
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23
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24 #include "../StoneException.h"
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25
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26 #include <emscripten/html5.h>
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27
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28 namespace OrthancStone
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29 {
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30 WebAssemblyOpenGLViewport::WebAssemblyOpenGLViewport(const std::string& canvas)
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31 : WebAssemblyViewport(canvas)
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32 , context_(canvas)
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33 , cssWidth_(0) // will be set in Refresh()
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34 , cssHeight_(0) // ditto
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35 , pixelWidth_(0) // ditto
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36 , pixelHeight_(0) // ditto
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37 {
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38 compositor_.reset(new OpenGLCompositor(context_, GetScene()));
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39 RegisterContextCallbacks();
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40 }
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41
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42 WebAssemblyOpenGLViewport::WebAssemblyOpenGLViewport(const std::string& canvas,
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43 boost::shared_ptr<Scene2D>& scene)
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44 : WebAssemblyViewport(canvas, scene)
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45 , context_(canvas)
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46 , cssWidth_(0) // will be set in Refresh()
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47 , cssHeight_(0) // ditto
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48 , pixelWidth_(0) // ditto
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49 , pixelHeight_(0) // ditto
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50 {
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51 compositor_.reset(new OpenGLCompositor(context_, GetScene()));
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52 RegisterContextCallbacks();
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53 }
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54
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55 void WebAssemblyOpenGLViewport::UpdateSize()
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56 {
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57 context_.UpdateSize(); // First read the size of the canvas
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58
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59 if (compositor_.get() != NULL)
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60 {
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61 compositor_->Refresh(); // Then refresh the content of the canvas
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62 }
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63 }
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65 /*
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66 typedef EM_BOOL (*em_webgl_context_callback)(int eventType, const void *reserved, void *userData);
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67
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68 EMSCRIPTEN_EVENT_WEBGLCONTEXTLOST EMSCRIPTEN_EVENT_WEBGLCONTEXTRESTORED
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69
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70 EMSCRIPTEN_RESULT emscripten_set_webglcontextlost_callback(
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71 const char *target, void *userData, EM_BOOL useCapture, em_webgl_context_callback callback)
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72
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73 EMSCRIPTEN_RESULT emscripten_set_webglcontextrestored_callback(
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74 const char *target, void *userData, EM_BOOL useCapture, em_webgl_context_callback callback)
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76 */
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78 EM_BOOL WebAssemblyOpenGLViewport_OpenGLContextLost_callback(
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79 int eventType, const void* reserved, void* userData)
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80 {
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81 ORTHANC_ASSERT(eventType == EMSCRIPTEN_EVENT_WEBGLCONTEXTLOST);
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82 WebAssemblyOpenGLViewport* viewport = reinterpret_cast<WebAssemblyOpenGLViewport*>(userData);
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83 return viewport->OpenGLContextLost();
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84 }
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85
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86 EM_BOOL WebAssemblyOpenGLViewport_OpenGLContextRestored_callback(
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87 int eventType, const void* reserved, void* userData)
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88 {
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89 ORTHANC_ASSERT(eventType == EMSCRIPTEN_EVENT_WEBGLCONTEXTRESTORED);
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90 WebAssemblyOpenGLViewport* viewport = reinterpret_cast<WebAssemblyOpenGLViewport*>(userData);
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91 return viewport->OpenGLContextRestored();
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92 }
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93
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94 void WebAssemblyOpenGLViewport::DisableCompositor()
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95 {
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96 compositor_.reset();
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97 }
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98
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99 ICompositor& WebAssemblyOpenGLViewport::GetCompositor()
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100 {
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101 if (compositor_.get() == NULL)
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102 {
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103 // "HasCompositor()" should have been called
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104 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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105 }
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106 else
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107 {
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108 return *compositor_;
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109 }
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110 }
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111
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112 void WebAssemblyOpenGLViewport::UpdateSizeIfNeeded()
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113 {
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114 bool needsRefresh = false;
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115 std::string canvasId = GetCanvasIdentifier();
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116
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117 {
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118 double cssWidth = 0;
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119 double cssHeight = 0;
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120 EMSCRIPTEN_RESULT res = EMSCRIPTEN_RESULT_SUCCESS;
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121 res =
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122 emscripten_get_element_css_size(canvasId.c_str(), &cssWidth, &cssHeight);
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123
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124 if (res == EMSCRIPTEN_RESULT_SUCCESS)
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Benjamin Golinvaux <bgo@osimis.io>
parents: 1054
diff changeset
125 {
ce3052f28f2e Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
Benjamin Golinvaux <bgo@osimis.io>
parents: 1054
diff changeset
126 if ((cssWidth != cssWidth_) || (cssHeight != cssHeight_))
ce3052f28f2e Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
Benjamin Golinvaux <bgo@osimis.io>
parents: 1054
diff changeset
127 {
ce3052f28f2e Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
Benjamin Golinvaux <bgo@osimis.io>
parents: 1054
diff changeset
128 cssWidth_ = cssWidth;
ce3052f28f2e Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
Benjamin Golinvaux <bgo@osimis.io>
parents: 1054
diff changeset
129 cssHeight_ = cssHeight;
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Benjamin Golinvaux <bgo@osimis.io>
parents: 1054
diff changeset
130 needsRefresh = true;
ce3052f28f2e Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
Benjamin Golinvaux <bgo@osimis.io>
parents: 1054
diff changeset
131 }
ce3052f28f2e Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
Benjamin Golinvaux <bgo@osimis.io>
parents: 1054
diff changeset
132 }
ce3052f28f2e Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
Benjamin Golinvaux <bgo@osimis.io>
parents: 1054
diff changeset
133 }
ce3052f28f2e Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
Benjamin Golinvaux <bgo@osimis.io>
parents: 1054
diff changeset
134
ce3052f28f2e Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
Benjamin Golinvaux <bgo@osimis.io>
parents: 1054
diff changeset
135 {
ce3052f28f2e Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
Benjamin Golinvaux <bgo@osimis.io>
parents: 1054
diff changeset
136 int pixelWidth = 0;
ce3052f28f2e Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
Benjamin Golinvaux <bgo@osimis.io>
parents: 1054
diff changeset
137 int pixelHeight = 0;
ce3052f28f2e Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
Benjamin Golinvaux <bgo@osimis.io>
parents: 1054
diff changeset
138 EMSCRIPTEN_RESULT res = EMSCRIPTEN_RESULT_SUCCESS;
ce3052f28f2e Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
Benjamin Golinvaux <bgo@osimis.io>
parents: 1054
diff changeset
139 res =
ce3052f28f2e Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
Benjamin Golinvaux <bgo@osimis.io>
parents: 1054
diff changeset
140 emscripten_get_canvas_element_size(canvasId.c_str(), &pixelWidth, &pixelHeight);
ce3052f28f2e Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
Benjamin Golinvaux <bgo@osimis.io>
parents: 1054
diff changeset
141
ce3052f28f2e Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
Benjamin Golinvaux <bgo@osimis.io>
parents: 1054
diff changeset
142 if (res == EMSCRIPTEN_RESULT_SUCCESS)
ce3052f28f2e Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
Benjamin Golinvaux <bgo@osimis.io>
parents: 1054
diff changeset
143 {
ce3052f28f2e Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
Benjamin Golinvaux <bgo@osimis.io>
parents: 1054
diff changeset
144 if ((pixelWidth != pixelWidth_) || (pixelHeight != pixelHeight_))
ce3052f28f2e Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
Benjamin Golinvaux <bgo@osimis.io>
parents: 1054
diff changeset
145 {
ce3052f28f2e Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
Benjamin Golinvaux <bgo@osimis.io>
parents: 1054
diff changeset
146 pixelWidth_ = pixelWidth;
ce3052f28f2e Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
Benjamin Golinvaux <bgo@osimis.io>
parents: 1054
diff changeset
147 pixelHeight_ = pixelHeight;
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Benjamin Golinvaux <bgo@osimis.io>
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diff changeset
148 needsRefresh = true;
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Benjamin Golinvaux <bgo@osimis.io>
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diff changeset
149 }
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Benjamin Golinvaux <bgo@osimis.io>
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diff changeset
150 }
ce3052f28f2e Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
Benjamin Golinvaux <bgo@osimis.io>
parents: 1054
diff changeset
151 }
ce3052f28f2e Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
Benjamin Golinvaux <bgo@osimis.io>
parents: 1054
diff changeset
152
ce3052f28f2e Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
Benjamin Golinvaux <bgo@osimis.io>
parents: 1054
diff changeset
153 if (needsRefresh)
ce3052f28f2e Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
Benjamin Golinvaux <bgo@osimis.io>
parents: 1054
diff changeset
154 UpdateSize();
ce3052f28f2e Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
Benjamin Golinvaux <bgo@osimis.io>
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diff changeset
155 }
ce3052f28f2e Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
Benjamin Golinvaux <bgo@osimis.io>
parents: 1054
diff changeset
156
947
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
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diff changeset
157 void WebAssemblyOpenGLViewport::Refresh()
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Benjamin Golinvaux <bgo@osimis.io>
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diff changeset
158 {
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Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
159 try
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Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
160 {
1239
ce3052f28f2e Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
Benjamin Golinvaux <bgo@osimis.io>
parents: 1054
diff changeset
161 // first, we check if the canvas size (both css size in css pixels and
ce3052f28f2e Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
Benjamin Golinvaux <bgo@osimis.io>
parents: 1054
diff changeset
162 // backing store) have changed. if so, we call UpdateSize to deal with
ce3052f28f2e Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
Benjamin Golinvaux <bgo@osimis.io>
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diff changeset
163 // it
ce3052f28f2e Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
Benjamin Golinvaux <bgo@osimis.io>
parents: 1054
diff changeset
164
ce3052f28f2e Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
Benjamin Golinvaux <bgo@osimis.io>
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diff changeset
165 LOG(INFO) << "updating cairo viewport size";
ce3052f28f2e Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
Benjamin Golinvaux <bgo@osimis.io>
parents: 1054
diff changeset
166
ce3052f28f2e Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
Benjamin Golinvaux <bgo@osimis.io>
parents: 1054
diff changeset
167 // maybe the canvas size has changed and we need to update the
ce3052f28f2e Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
Benjamin Golinvaux <bgo@osimis.io>
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diff changeset
168 // canvas backing store size
ce3052f28f2e Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
Benjamin Golinvaux <bgo@osimis.io>
parents: 1054
diff changeset
169 UpdateSizeIfNeeded();
ce3052f28f2e Added a lazy size update system in WebAssemblyOpenGLViewport::Refresh
Benjamin Golinvaux <bgo@osimis.io>
parents: 1054
diff changeset
170
1054
3c9529edf5fd fixing WebAssemblyViewport
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1050
diff changeset
171 if (HasCompositor())
3c9529edf5fd fixing WebAssemblyViewport
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1050
diff changeset
172 {
3c9529edf5fd fixing WebAssemblyViewport
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1050
diff changeset
173 GetCompositor().Refresh();
3c9529edf5fd fixing WebAssemblyViewport
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1050
diff changeset
174 }
3c9529edf5fd fixing WebAssemblyViewport
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1050
diff changeset
175 else
956
a7351ad54960 Made IsContextLost automatically set the flag by checking with the emscripten
Benjamin Golinvaux <bgo@osimis.io>
parents: 947
diff changeset
176 {
a7351ad54960 Made IsContextLost automatically set the flag by checking with the emscripten
Benjamin Golinvaux <bgo@osimis.io>
parents: 947
diff changeset
177 // this block was added because of (perceived?) bugs in the
a7351ad54960 Made IsContextLost automatically set the flag by checking with the emscripten
Benjamin Golinvaux <bgo@osimis.io>
parents: 947
diff changeset
178 // browser where the WebGL contexts are NOT automatically restored
a7351ad54960 Made IsContextLost automatically set the flag by checking with the emscripten
Benjamin Golinvaux <bgo@osimis.io>
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diff changeset
179 // after being lost.
a7351ad54960 Made IsContextLost automatically set the flag by checking with the emscripten
Benjamin Golinvaux <bgo@osimis.io>
parents: 947
diff changeset
180 // the WebGL context has been lost. Sce
a7351ad54960 Made IsContextLost automatically set the flag by checking with the emscripten
Benjamin Golinvaux <bgo@osimis.io>
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diff changeset
181
a7351ad54960 Made IsContextLost automatically set the flag by checking with the emscripten
Benjamin Golinvaux <bgo@osimis.io>
parents: 947
diff changeset
182 //LOG(ERROR) << "About to call WebAssemblyOpenGLContext::TryRecreate().";
a7351ad54960 Made IsContextLost automatically set the flag by checking with the emscripten
Benjamin Golinvaux <bgo@osimis.io>
parents: 947
diff changeset
183 //LOG(ERROR) << "Before calling it, isContextLost == " << context_.IsContextLost();
a7351ad54960 Made IsContextLost automatically set the flag by checking with the emscripten
Benjamin Golinvaux <bgo@osimis.io>
parents: 947
diff changeset
184
1054
3c9529edf5fd fixing WebAssemblyViewport
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1050
diff changeset
185 if (!context_.IsContextLost())
3c9529edf5fd fixing WebAssemblyViewport
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1050
diff changeset
186 {
964
91f827272c1f Added cache-control headers for POST requests + #ifdef'd tracing logs + trace on context restored
Benjamin Golinvaux <bgo@osimis.io>
parents: 956
diff changeset
187 LOG(TRACE) << "Context restored!";
956
a7351ad54960 Made IsContextLost automatically set the flag by checking with the emscripten
Benjamin Golinvaux <bgo@osimis.io>
parents: 947
diff changeset
188 //LOG(ERROR) << "After calling it, isContextLost == " << context_.IsContextLost();
a7351ad54960 Made IsContextLost automatically set the flag by checking with the emscripten
Benjamin Golinvaux <bgo@osimis.io>
parents: 947
diff changeset
189 RestoreCompositor();
a7351ad54960 Made IsContextLost automatically set the flag by checking with the emscripten
Benjamin Golinvaux <bgo@osimis.io>
parents: 947
diff changeset
190 UpdateSize();
a7351ad54960 Made IsContextLost automatically set the flag by checking with the emscripten
Benjamin Golinvaux <bgo@osimis.io>
parents: 947
diff changeset
191 }
a7351ad54960 Made IsContextLost automatically set the flag by checking with the emscripten
Benjamin Golinvaux <bgo@osimis.io>
parents: 947
diff changeset
192 }
947
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
193 }
1050
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1045
diff changeset
194 catch (const StoneException& e)
947
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
195 {
1050
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1045
diff changeset
196 if (e.GetErrorCode() == ErrorCode_WebGLContextLost)
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1045
diff changeset
197 {
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1045
diff changeset
198 LOG(WARNING) << "Context is lost! Compositor will be disabled.";
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1045
diff changeset
199 DisableCompositor();
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1045
diff changeset
200 // we now need to wait for the "context restored" callback
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1045
diff changeset
201 }
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1045
diff changeset
202 else
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1045
diff changeset
203 {
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1045
diff changeset
204 throw;
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1045
diff changeset
205 }
947
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
206 }
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
207 catch (...)
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
208 {
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
209 // something else nasty happened
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
210 throw;
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
211 }
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
212 }
956
a7351ad54960 Made IsContextLost automatically set the flag by checking with the emscripten
Benjamin Golinvaux <bgo@osimis.io>
parents: 947
diff changeset
213
947
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
214 void WebAssemblyOpenGLViewport::RestoreCompositor()
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
215 {
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
216 // the context must have been restored!
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
217 ORTHANC_ASSERT(!context_.IsContextLost());
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
218 if (compositor_.get() == NULL)
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
219 {
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
220 compositor_.reset(new OpenGLCompositor(context_, GetScene()));
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
221 }
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
222 else
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
223 {
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
224 LOG(WARNING) << "RestoreCompositor() called for \"" << GetCanvasIdentifier() << "\" while it was NOT lost! Nothing done.";
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
225 }
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
226 }
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
227
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
228 bool WebAssemblyOpenGLViewport::OpenGLContextLost()
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
229 {
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
230 LOG(ERROR) << "WebAssemblyOpenGLViewport::OpenGLContextLost() for canvas: " << GetCanvasIdentifier();
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
231 DisableCompositor();
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
232 return true;
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
233 }
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
234
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
235 bool WebAssemblyOpenGLViewport::OpenGLContextRestored()
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
236 {
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
237 LOG(ERROR) << "WebAssemblyOpenGLViewport::OpenGLContextRestored() for canvas: " << GetCanvasIdentifier();
956
a7351ad54960 Made IsContextLost automatically set the flag by checking with the emscripten
Benjamin Golinvaux <bgo@osimis.io>
parents: 947
diff changeset
238
a7351ad54960 Made IsContextLost automatically set the flag by checking with the emscripten
Benjamin Golinvaux <bgo@osimis.io>
parents: 947
diff changeset
239 // maybe the context has already been restored by other means (the
a7351ad54960 Made IsContextLost automatically set the flag by checking with the emscripten
Benjamin Golinvaux <bgo@osimis.io>
parents: 947
diff changeset
240 // Refresh() function)
1054
3c9529edf5fd fixing WebAssemblyViewport
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1050
diff changeset
241 if (!HasCompositor())
956
a7351ad54960 Made IsContextLost automatically set the flag by checking with the emscripten
Benjamin Golinvaux <bgo@osimis.io>
parents: 947
diff changeset
242 {
a7351ad54960 Made IsContextLost automatically set the flag by checking with the emscripten
Benjamin Golinvaux <bgo@osimis.io>
parents: 947
diff changeset
243 RestoreCompositor();
a7351ad54960 Made IsContextLost automatically set the flag by checking with the emscripten
Benjamin Golinvaux <bgo@osimis.io>
parents: 947
diff changeset
244 UpdateSize();
a7351ad54960 Made IsContextLost automatically set the flag by checking with the emscripten
Benjamin Golinvaux <bgo@osimis.io>
parents: 947
diff changeset
245 }
947
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
246 return false;
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
247 }
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
248
942
685c9a2d115f Added missing ORTHANC_OVERRIDE + preparation for lost GL context handling + stubs for GL context event handlers
Benjamin Golinvaux <bgo@osimis.io>
parents: 910
diff changeset
249 void WebAssemblyOpenGLViewport::RegisterContextCallbacks()
685c9a2d115f Added missing ORTHANC_OVERRIDE + preparation for lost GL context handling + stubs for GL context event handlers
Benjamin Golinvaux <bgo@osimis.io>
parents: 910
diff changeset
250 {
956
a7351ad54960 Made IsContextLost automatically set the flag by checking with the emscripten
Benjamin Golinvaux <bgo@osimis.io>
parents: 947
diff changeset
251 #if 0
a7351ad54960 Made IsContextLost automatically set the flag by checking with the emscripten
Benjamin Golinvaux <bgo@osimis.io>
parents: 947
diff changeset
252 // DISABLED ON 2019-08-20 and replaced by external JS calls because I could
a7351ad54960 Made IsContextLost automatically set the flag by checking with the emscripten
Benjamin Golinvaux <bgo@osimis.io>
parents: 947
diff changeset
253 // not get emscripten API to work
942
685c9a2d115f Added missing ORTHANC_OVERRIDE + preparation for lost GL context handling + stubs for GL context event handlers
Benjamin Golinvaux <bgo@osimis.io>
parents: 910
diff changeset
254 // TODO: what's the impact of userCapture=true ?
685c9a2d115f Added missing ORTHANC_OVERRIDE + preparation for lost GL context handling + stubs for GL context event handlers
Benjamin Golinvaux <bgo@osimis.io>
parents: 910
diff changeset
255 const char* canvasId = GetCanvasIdentifier().c_str();
685c9a2d115f Added missing ORTHANC_OVERRIDE + preparation for lost GL context handling + stubs for GL context event handlers
Benjamin Golinvaux <bgo@osimis.io>
parents: 910
diff changeset
256 void* that = reinterpret_cast<void*>(this);
685c9a2d115f Added missing ORTHANC_OVERRIDE + preparation for lost GL context handling + stubs for GL context event handlers
Benjamin Golinvaux <bgo@osimis.io>
parents: 910
diff changeset
257 EMSCRIPTEN_RESULT status = EMSCRIPTEN_RESULT_SUCCESS;
685c9a2d115f Added missing ORTHANC_OVERRIDE + preparation for lost GL context handling + stubs for GL context event handlers
Benjamin Golinvaux <bgo@osimis.io>
parents: 910
diff changeset
258
947
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Benjamin Golinvaux <bgo@osimis.io>
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259 //status = emscripten_set_webglcontextlost_callback(canvasId, that, true, WebAssemblyOpenGLViewport_OpenGLContextLost_callback);
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260 //if (status != EMSCRIPTEN_RESULT_SUCCESS)
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261 //{
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262 // std::stringstream ss;
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263 // ss << "Error while calling emscripten_set_webglcontextlost_callback for: \"" << GetCanvasIdentifier() << "\"";
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264 // std::string msg = ss.str();
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265 // LOG(ERROR) << msg;
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266 // ORTHANC_ASSERT(false, msg.c_str());
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267 //}
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268
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269 status = emscripten_set_webglcontextrestored_callback(canvasId, that, true, WebAssemblyOpenGLViewport_OpenGLContextRestored_callback);
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270 if (status != EMSCRIPTEN_RESULT_SUCCESS)
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271 {
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272 std::stringstream ss;
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273 ss << "Error while calling emscripten_set_webglcontextrestored_callback for: \"" << GetCanvasIdentifier() << "\"";
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274 std::string msg = ss.str();
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275 LOG(ERROR) << msg;
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276 ORTHANC_ASSERT(false, msg.c_str());
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277 }
947
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278 LOG(TRACE) << "WebAssemblyOpenGLViewport::RegisterContextCallbacks() SUCCESS!!!";
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279 #endif
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280 }
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281
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282 WebAssemblyCairoViewport::WebAssemblyCairoViewport(const std::string& canvas) :
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283 WebAssemblyViewport(canvas),
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284 canvas_(canvas),
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285 compositor_(GetScene(), 1024, 768)
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286 {
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287 }
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288
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289 WebAssemblyCairoViewport::WebAssemblyCairoViewport(const std::string& canvas,
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290 boost::shared_ptr<Scene2D>& scene) :
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291 WebAssemblyViewport(canvas, scene),
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292 canvas_(canvas),
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293 compositor_(GetScene(), 1024, 768)
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294 {
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295 }
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296
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297 void WebAssemblyCairoViewport::UpdateSize()
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298 {
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299 LOG(INFO) << "updating cairo viewport size";
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300 double w, h;
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301 emscripten_get_element_css_size(canvas_.c_str(), &w, &h);
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302
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303 /**
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304 * Emscripten has the function emscripten_get_element_css_size()
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305 * to query the width and height of a named HTML element. I'm
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306 * calling this first to get the initial size of the canvas DOM
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307 * element, and then call emscripten_set_canvas_size() to
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308 * initialize the framebuffer size of the canvas to the same
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309 * size as its DOM element.
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310 * https://floooh.github.io/2017/02/22/emsc-html.html
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311 **/
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312 unsigned int canvasWidth = 0;
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313 unsigned int canvasHeight = 0;
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314
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315 if (w > 0 ||
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316 h > 0)
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317 {
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318 canvasWidth = static_cast<unsigned int>(boost::math::iround(w));
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319 canvasHeight = static_cast<unsigned int>(boost::math::iround(h));
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320 }
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321
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322 emscripten_set_canvas_element_size(canvas_.c_str(), canvasWidth, canvasHeight);
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323 compositor_.UpdateSize(canvasWidth, canvasHeight);
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324 }
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325
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326 void WebAssemblyCairoViewport::Refresh()
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327 {
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328 LOG(INFO) << "refreshing cairo viewport, TODO: blit to the canvans.getContext('2d')";
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329 GetCompositor().Refresh();
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330 }
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parents:
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331 }