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annotate Framework/Viewport/WebAssemblyViewport.cpp @ 1232:a28861abf888 broker

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viewports for WebAssembly
author Sebastien Jodogne <s.jodogne@gmail.com>
date Mon, 09 Dec 2019 17:46:33 +0100
parents 3c9529edf5fd
children a4bb8c2dd211
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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 <Core/OrthancException.h>
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25
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26 #include <boost/make_shared.hpp>
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27
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28 namespace OrthancStone
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29 {
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30 static void ConvertMouseEvent(PointerEvent& target,
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31 const EmscriptenMouseEvent& source,
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32 const ICompositor& compositor)
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33 {
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34 int x = static_cast<int>(source.targetX);
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35 int y = static_cast<int>(source.targetY);
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36
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37 switch (source.button)
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38 {
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39 case 0:
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40 target.SetMouseButton(MouseButton_Left);
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41 break;
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42
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43 case 1:
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44 target.SetMouseButton(MouseButton_Middle);
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45 break;
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46
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47 case 2:
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48 target.SetMouseButton(MouseButton_Right);
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49 break;
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50
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51 default:
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52 target.SetMouseButton(MouseButton_None);
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53 break;
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54 }
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55
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56 target.AddPosition(compositor.GetPixelCenterCoordinates(x, y));
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57 target.SetAltModifier(source.altKey);
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58 target.SetControlModifier(source.ctrlKey);
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59 target.SetShiftModifier(source.shiftKey);
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60 }
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61
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62
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63 class WebAssemblyViewport::WasmLock : public ILock
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64 {
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65 private:
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66 WebAssemblyViewport& that_;
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67
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68 public:
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69 WasmLock(WebAssemblyViewport& that) :
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70 that_(that)
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71 {
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72 }
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73
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74 virtual bool HasCompositor() const ORTHANC_OVERRIDE
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75 {
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76 return that_.compositor_.get() != NULL;
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77 }
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78
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79 virtual ICompositor& GetCompositor() ORTHANC_OVERRIDE
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80 {
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81 if (that_.compositor_.get() == NULL)
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82 {
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83 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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84 }
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85 else
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86 {
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87 return *that_.compositor_;
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88 }
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89 }
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90
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91 virtual ViewportController& GetController() ORTHANC_OVERRIDE
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92 {
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93 assert(that_.controller_);
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94 return *that_.controller_;
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95 }
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96
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97 virtual void Invalidate() ORTHANC_OVERRIDE
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98 {
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99 that_.Invalidate();
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100 }
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101 };
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102
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103
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104 EM_BOOL WebAssemblyViewport::OnRequestAnimationFrame(double time, void *userData)
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105 {
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106 WebAssemblyViewport& that = *reinterpret_cast<WebAssemblyViewport*>(userData);
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107
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108 if (that.compositor_.get() != NULL &&
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109 that.controller_ /* should always be true */)
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110 {
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111 that.Paint(*that.compositor_, *that.controller_);
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112 }
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113
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114 return true;
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115 }
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116
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117
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118 EM_BOOL WebAssemblyViewport::OnResize(int eventType, const EmscriptenUiEvent *uiEvent, void *userData)
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119 {
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120 WebAssemblyViewport& that = *reinterpret_cast<WebAssemblyViewport*>(userData);
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121
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122 if (that.compositor_.get() != NULL)
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123 {
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124 that.UpdateSize(*that.compositor_);
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125 that.Invalidate();
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126 }
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127
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128 return true;
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129 }
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130
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131
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132 EM_BOOL WebAssemblyViewport::OnMouseDown(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData)
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133 {
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134 WebAssemblyViewport& that = *reinterpret_cast<WebAssemblyViewport*>(userData);
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135
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136 LOG(INFO) << "mouse down: " << that.GetFullCanvasId();
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137
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138 if (that.compositor_.get() != NULL &&
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139 that.interactor_.get() != NULL)
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
140 {
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
141 PointerEvent pointer;
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
142 ConvertMouseEvent(pointer, *mouseEvent, *that.compositor_);
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
143
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
144 that.controller_->HandleMousePress(*that.interactor_, pointer,
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
145 that.compositor_->GetCanvasWidth(),
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
146 that.compositor_->GetCanvasHeight());
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
147 that.Invalidate();
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
148 }
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
149
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
150 return true;
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
151 }
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
152
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
153
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
154 EM_BOOL WebAssemblyViewport::OnMouseMove(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData)
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
155 {
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
156 WebAssemblyViewport& that = *reinterpret_cast<WebAssemblyViewport*>(userData);
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
157
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
158 if (that.compositor_.get() != NULL &&
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
159 that.controller_->HasActiveTracker())
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
160 {
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
161 PointerEvent pointer;
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
162 ConvertMouseEvent(pointer, *mouseEvent, *that.compositor_);
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
163 that.controller_->HandleMouseMove(pointer);
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
164 that.Invalidate();
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
165 }
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
166
947
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
167 return true;
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
168 }
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
169
1232
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Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
170
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
171 EM_BOOL WebAssemblyViewport::OnMouseUp(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData)
947
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
172 {
1232
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Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
173 WebAssemblyViewport& that = *reinterpret_cast<WebAssemblyViewport*>(userData);
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
174
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
175 if (that.compositor_.get() != NULL)
956
a7351ad54960 Made IsContextLost automatically set the flag by checking with the emscripten
Benjamin Golinvaux <bgo@osimis.io>
parents: 947
diff changeset
176 {
1232
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Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
177 PointerEvent pointer;
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
178 ConvertMouseEvent(pointer, *mouseEvent, *that.compositor_);
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
179 that.controller_->HandleMouseRelease(pointer);
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
180 that.Invalidate();
956
a7351ad54960 Made IsContextLost automatically set the flag by checking with the emscripten
Benjamin Golinvaux <bgo@osimis.io>
parents: 947
diff changeset
181 }
1232
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Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
182
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
183 return true;
947
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
184 }
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 942
diff changeset
185
1232
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Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
186
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
187 void WebAssemblyViewport::Invalidate()
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
188 {
1232
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Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
189 emscripten_request_animation_frame(OnRequestAnimationFrame, this);
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
190 }
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
191
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
192
1232
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
193 void WebAssemblyViewport::AcquireCompositor(ICompositor* compositor /* takes ownership */)
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
194 {
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
195 if (compositor == NULL)
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
196 {
1232
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
197 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer);
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
198 }
1232
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
199 else
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
200 {
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
201 compositor_.reset(compositor);
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
202 }
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
203 }
907
722ee73e6ba2 cleanup + started to implement WebAssemblyCairoViewport (wip)
Alain Mazy <alain@mazy.be>
parents: 891
diff changeset
204
1232
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
205
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
206 WebAssemblyViewport::WebAssemblyViewport(const std::string& canvasId,
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
207 const Scene2D* scene) :
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
208 shortCanvasId_(canvasId),
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
209 fullCanvasId_("#" + canvasId),
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
210 interactor_(new DefaultViewportInteractor)
907
722ee73e6ba2 cleanup + started to implement WebAssemblyCairoViewport (wip)
Alain Mazy <alain@mazy.be>
parents: 891
diff changeset
211 {
1232
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
212 if (scene == NULL)
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
213 {
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
214 controller_ = boost::make_shared<ViewportController>();
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
215 }
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
216 else
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
217 {
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
218 controller_ = boost::make_shared<ViewportController>(*scene);
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
219 }
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
220
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
221 LOG(INFO) << "Initializing Stone viewport on HTML canvas: " << canvasId;
907
722ee73e6ba2 cleanup + started to implement WebAssemblyCairoViewport (wip)
Alain Mazy <alain@mazy.be>
parents: 891
diff changeset
222
1232
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
223 if (canvasId.empty() ||
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
224 canvasId[0] == '#')
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
225 {
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
226 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange,
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
227 "The canvas identifier must not start with '#'");
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
228 }
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
229
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
230 // Disable right-click on the canvas (i.e. context menu)
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
231 EM_ASM({
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
232 document.getElementById(UTF8ToString($0)).oncontextmenu = function(event) {
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
233 event.preventDefault();
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
234 }
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
235 },
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
236 canvasId.c_str() // $0
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
237 );
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
238
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
239 // It is not possible to monitor the resizing of individual
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
240 // canvas, so we track the full window of the browser
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
241 emscripten_set_resize_callback(EMSCRIPTEN_EVENT_TARGET_WINDOW, this, false, OnResize);
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
242
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
243 emscripten_set_mousedown_callback(fullCanvasId_.c_str(), this, false, OnMouseDown);
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
244 emscripten_set_mousemove_callback(fullCanvasId_.c_str(), this, false, OnMouseMove);
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
245 emscripten_set_mouseup_callback(fullCanvasId_.c_str(), this, false, OnMouseUp);
907
722ee73e6ba2 cleanup + started to implement WebAssemblyCairoViewport (wip)
Alain Mazy <alain@mazy.be>
parents: 891
diff changeset
246 }
722ee73e6ba2 cleanup + started to implement WebAssemblyCairoViewport (wip)
Alain Mazy <alain@mazy.be>
parents: 891
diff changeset
247
1232
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
248
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
249 IViewport::ILock* WebAssemblyViewport::Lock()
910
a6c12fe88bcb wip: WebAssemblyCairoViewport: still need to implement blit to canvas
Alain Mazy <alain@mazy.be>
parents: 907
diff changeset
250 {
1232
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
251 return new WasmLock(*this);
910
a6c12fe88bcb wip: WebAssemblyCairoViewport: still need to implement blit to canvas
Alain Mazy <alain@mazy.be>
parents: 907
diff changeset
252 }
a6c12fe88bcb wip: WebAssemblyCairoViewport: still need to implement blit to canvas
Alain Mazy <alain@mazy.be>
parents: 907
diff changeset
253
1232
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
254
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
255 void WebAssemblyViewport::AcquireInteractor(IViewportInteractor* interactor)
910
a6c12fe88bcb wip: WebAssemblyCairoViewport: still need to implement blit to canvas
Alain Mazy <alain@mazy.be>
parents: 907
diff changeset
256 {
1232
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
257 if (interactor == NULL)
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
258 {
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
259 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer);
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
260 }
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
261 else
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
262 {
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
263 interactor_.reset(interactor);
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
264 }
910
a6c12fe88bcb wip: WebAssemblyCairoViewport: still need to implement blit to canvas
Alain Mazy <alain@mazy.be>
parents: 907
diff changeset
265 }
891
0aff28f15ea2 new abstraction: IViewport
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
266 }