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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2015 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 *
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6 * This program is free software: you can redistribute it and/or
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7 * modify it under the terms of the GNU Affero General Public License
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8 * as published by the Free Software Foundation, either version 3 of
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9 * the License, or (at your option) any later version.
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10 *
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11 * This program is distributed in the hope that it will be useful, but
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12 * WITHOUT ANY WARRANTY; without even the implied warranty of
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 * Affero General Public License for more details.
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15 *
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16 * You should have received a copy of the GNU Affero General Public License
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17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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18 **/
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19
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20
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21 var compression = 'jpeg95';
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22
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23
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24
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25 // Prevent the access to IE
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26 if(navigator.appVersion.indexOf("MSIE ") != -1)
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27 {
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28 alert("Please use Mozilla Firefox or Google Chrome. Microsoft Internet Explorer is not supported.");
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29 }
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30
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31
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32 function ResizeCornerstone()
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33 {
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34 $('#dicomImage').height($(window).height() - $('#slider').parent().height());
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35 var element = $('#dicomImage').get(0);
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36 cornerstone.resize(element, true);
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37 }
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38
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39
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40 function SetWindowing(center, width)
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41 {
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42 var element = $('#dicomImage').get(0);
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43 var viewport = cornerstone.getViewport(element);
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44 viewport.voi.windowCenter = center;
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45 viewport.voi.windowWidth = width;
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46 cornerstone.setViewport(element, viewport);
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47 UpdateViewportInformation();
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48 }
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49
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50
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51 function SetFullWindowing()
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52 {
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53 var element = $('#dicomImage').get(0);
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54 var viewport = cornerstone.getViewport(element);
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55 var image = cornerstone.getEnabledElement(element).image;
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56
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57 if (image.color) {
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58 // Ignore color images
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59 return;
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60 }
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61
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62 var minValue = image.minPixelValue;
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63 var maxValue = image.maxPixelValue;
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64 if (minValue == undefined ||
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65 maxValue == undefined ||
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66 minValue == maxValue) {
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67 return;
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68 }
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69
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70 if (image.slope != undefined &&
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71 image.intercept != undefined) {
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72 minValue = minValue * image.slope + image.intercept;
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73 maxValue = maxValue * image.slope + image.intercept;
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74 }
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75
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76 viewport.voi.windowCenter = (minValue + maxValue) / 2.0;
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77 viewport.voi.windowWidth = (maxValue - minValue) / 2.0;
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78 cornerstone.setViewport(element, viewport);
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79 UpdateViewportInformation();
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80 }
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81
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82
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83 function SetDefaultWindowing()
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84 {
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85 var element = $('#dicomImage').get(0);
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86 var viewport = cornerstone.getViewport(element);
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87 var image = cornerstone.getEnabledElement(element).image;
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88
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89 viewport.voi.windowCenter = image.windowCenter;
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90 viewport.voi.windowWidth = image.windowWidth;
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91 cornerstone.setViewport(element, viewport);
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92 UpdateViewportInformation();
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93 }
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94
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95
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96 function SetBoneWindowing()
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97 {
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98 SetWindowing(300, 2000);
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99 }
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100
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101
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102 function SetLungWindowing()
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103 {
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104 SetWindowing(-600, 1600);
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105 }
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106
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107
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108 function UpdateViewportInformation()
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109 {
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110 var element = $('#dicomImage').get(0);
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111 var viewport = cornerstone.getViewport(element);
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112
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113 $('#bottomleft').text('WW/WL:' + Math.round(viewport.voi.windowWidth) + '/' + Math.round(viewport.voi.windowCenter));
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114 $('#bottomright').text('Zoom: ' + viewport.scale.toFixed(2) + 'x');
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115 }
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116
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117
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118 function ToggleSeriesInformation()
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119 {
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120 $('#topright').toggle();
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121 }
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122
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123
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124 function ToggleInterpolation()
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125 {
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126 var element = $('#dicomImage').get(0);
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127 var viewport = cornerstone.getViewport(element);
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128 if (viewport.pixelReplication === true) {
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129 viewport.pixelReplication = false;
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130 } else {
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131 viewport.pixelReplication = true;
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132 }
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133 cornerstone.setViewport(element, viewport);
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134 }
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135
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136
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137 function ToggleInversion()
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138 {
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139 var element = $('#dicomImage').get(0);
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140 var viewport = cornerstone.getViewport(element);
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141 if (viewport.invert === true) {
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142 viewport.invert = false;
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143 } else {
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144 viewport.invert = true;
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145 }
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146 cornerstone.setViewport(element, viewport);
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147 }
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148
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149
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150 function DownloadInstance(instance)
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151 {
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152 // http://stackoverflow.com/a/3749395/881731
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153 var hiddenIFrameID = 'hiddenDownloader',
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154 iframe = document.getElementById(hiddenIFrameID);
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155 if (iframe === null) {
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156 iframe = document.createElement('iframe');
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157 iframe.id = hiddenIFrameID;
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158 iframe.style.display = 'none';
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159 document.body.appendChild(iframe);
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160 }
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161 iframe.src = '../../instances/' + instance + '/file';
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162 }
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163
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164
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165 function AdjustZoom()
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166 {
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167 var element = $('#dicomImage').get(0);
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168 cornerstone.fitToWindow(element);
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169 }
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170
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171
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172 function ZoomIn()
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173 {
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174 var element = $('#dicomImage').get(0);
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175 var viewport = cornerstone.getViewport(element);
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176 viewport.scale /= 0.5;
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177 cornerstone.setViewport(element, viewport);
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178 UpdateViewportInformation();
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179 }
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180
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181
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182 function ZoomOut()
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183 {
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184 var element = $('#dicomImage').get(0);
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185 var viewport = cornerstone.getViewport(element);
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186 viewport.scale *= 0.5;
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187 cornerstone.setViewport(element, viewport);
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188 UpdateViewportInformation();
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189 }
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190
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191
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192
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193 (function (cornerstone) {
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194 'use strict';
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195
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196 function PrintRange(pixels)
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197 {
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198 var a = Infinity;
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199 var b = -Infinity;
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200
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201 for (var i = 0, length = pixels.length; i < length; i++) {
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202 if (pixels[i] < a)
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203 a = pixels[i];
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204 if (pixels[i] > b)
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205 b = pixels[i];
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206 }
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207
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208 console.log(a + ' ' + b);
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209 }
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210
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211 function ChangeDynamics(pixels, source1, target1, source2, target2)
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212 {
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213 var scale = (target2 - target1) / (source2 - source1);
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214 var offset = (target1) - scale * source1;
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215
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216 for (var i = 0, length = pixels.length; i < length; i++) {
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217 pixels[i] = scale * pixels[i] + offset;
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218 }
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219 }
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220
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221
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222 function getPixelDataDeflate(image) {
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223 // Decompresses the base64 buffer that was compressed with Deflate
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224 var s = pako.inflate(window.atob(image.Orthanc.PixelData));
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225 var pixels = null;
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226
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227 if (image.color) {
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228 var buf = new ArrayBuffer(s.length / 3 * 4); // RGB32
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229 pixels = new Uint8Array(buf);
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230 var index = 0;
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231 for (var i = 0, length = s.length; i < length; i += 3) {
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232 pixels[index++] = s[i];
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233 pixels[index++] = s[i + 1];
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234 pixels[index++] = s[i + 2];
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235 pixels[index++] = 255; // Alpha channel
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236 }
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237 } else {
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238 var buf = new ArrayBuffer(s.length * 2); // int16_t
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239 pixels = new Int16Array(buf);
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240 var index = 0;
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241 for (var i = 0, length = s.length; i < length; i += 2) {
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242 var lower = s[i];
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243 var upper = s[i + 1];
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244 pixels[index] = lower + upper * 256;
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245 index++;
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246 }
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247 }
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248
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249 return pixels;
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250 }
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251
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252
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253 // http://stackoverflow.com/a/11058858/881731
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254 function str2ab(str) {
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255 var buf = new ArrayBuffer(str.length);
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256 var pixels = new Uint8Array(buf);
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257 for (var i = 0, strLen=str.length; i<strLen; i++) {
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258 pixels[i] = str.charCodeAt(i);
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259 }
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260 return pixels;
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261 }
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262
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263 function getPixelDataJpeg(image) {
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264 var jpegReader = new JpegImage();
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265 var jpeg = str2ab(window.atob(image.Orthanc.PixelData));
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266 jpegReader.parse(jpeg);
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267 var s = jpegReader.getData(image.width, image.height);
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268 var pixels = null;
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269
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270 if (image.color) {
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271 var buf = new ArrayBuffer(s.length / 3 * 4); // RGB32
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272 pixels = new Uint8Array(buf);
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273 var index = 0;
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274 for (var i = 0, length = s.length; i < length; i += 3) {
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275 pixels[index++] = s[i];
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276 pixels[index++] = s[i + 1];
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277 pixels[index++] = s[i + 2];
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278 pixels[index++] = 255; // Alpha channel
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279 }
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280 } else {
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281 var buf = new ArrayBuffer(s.length * 2); // uint8_t
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282 pixels = new Int16Array(buf);
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283 var index = 0;
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284 for (var i = 0, length = s.length; i < length; i++) {
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285 pixels[index] = s[i];
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286 index++;
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287 }
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288
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289 if (image.Orthanc.Stretched) {
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290 ChangeDynamics(pixels, 0, image.Orthanc.StretchLow, 255, image.Orthanc.StretchHigh);
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291 }
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292 }
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293
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294 return pixels;
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295 }
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296
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297
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298 function getOrthancImage(imageId) {
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299 var result = null;
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300
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301 $.ajax({
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302 type: 'GET',
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303 url: '../instances/' + compression + '-' + imageId,
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304 dataType: 'json',
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305 cache: true,
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306 async: false,
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307 success: function(image) {
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308 image.imageId = imageId;
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309 if (image.color)
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310 image.render = cornerstone.renderColorImage;
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311 else
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312 image.render = cornerstone.renderGrayscaleImage;
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313
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314 image.getPixelData = function() {
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315 if (image.Orthanc.Compression == 'Deflate')
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316 return getPixelDataDeflate(this);
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317
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318 if (image.Orthanc.Compression == 'Jpeg')
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319 return getPixelDataJpeg(this);
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320
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321 // Unknown compression
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322 return null;
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323 }
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324
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325 result = image;
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326 },
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327 error: function() {
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328 return null;
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329 }
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330 });
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331
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332 var deferred = $.Deferred();
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333 deferred.resolve(result);
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334 return deferred;
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335 }
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336
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337 // register our imageLoader plugin with cornerstone
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338 cornerstone.registerImageLoader('', getOrthancImage);
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339
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340 }(cornerstone));
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341
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342
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343 $(document).ready(function() {
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344 $('#open-toolbar').button({
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345 icons: { primary: 'ui-icon-custom-orthanc' },
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346 text: false
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347 });
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348
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349 var series = window.url('?series', window.location.search);
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350 if (series == null)
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351 return;
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352
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353 console.log('Displaying series: ' + series);
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354 var instances = [ ];
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355
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356 $.ajax({
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357 type: 'GET',
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358 url: '../series/' + series,
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359 dataType: 'json',
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360 cache: false,
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361 async: false,
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362 success: function(volume) {
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363 if (volume.SortedInstances.length != 0) {
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364 instances = volume.SortedInstances;
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365 $('#topright').html([
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366 $('<span>').text(volume.PatientID),
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367 $('<br>'),
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368 $('<span>').text(volume.PatientName),
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369 $('<br>'),
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370 $('<span>').text(volume.StudyDescription),
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371 $('<br>'),
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372 $('<span>').text(volume.SeriesDescription)
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373 ]);
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374 }
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375 }
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376 });
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377
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378 if (instances.length == 0)
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379 {
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380 console.log('No image in this series');
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381 return;
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382 }
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383
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384
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385 var currentImageIndex = 0;
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386
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387 // updates the image display
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388 function updateTheImage(imageIndex) {
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389 return cornerstone.loadAndCacheImage(instances[imageIndex]).then(function(image) {
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390 currentImageIndex = imageIndex;
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391 var viewport = cornerstone.getViewport(element);
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392 cornerstone.displayImage(element, image, viewport);
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393 });
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394 }
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395
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396 // image enable the element
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397 var element = $('#dicomImage').get(0);
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398 cornerstone.enable(element);
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399
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400 // set event handlers
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401 /*function onImageRendered(e, eventData) {
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402 $('#topright').text('Render Time:' + eventData.renderTimeInMs + ' ms');
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403 }
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404 $(element).on('CornerstoneImageRendered', onImageRendered);*/
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405
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406 // load and display the image
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407 var imagePromise = updateTheImage(0);
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408
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409 // add handlers for mouse events once the image is loaded.
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410 imagePromise.then(function() {
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411 viewport = cornerstone.getViewport(element);
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412 UpdateViewportInformation();
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413
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414 // add event handlers to pan image on mouse move
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415 $('#dicomImage').mousedown(function (e) {
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416 var lastX = e.pageX;
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417 var lastY = e.pageY;
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418 var mouseButton = e.which;
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419
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420 $(toolbar).hide();
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421
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422 $(document).mousemove(function (e) {
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423 var deltaX = e.pageX - lastX,
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424 deltaY = e.pageY - lastY;
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425 lastX = e.pageX;
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426 lastY = e.pageY;
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427
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428 if (mouseButton == 1) {
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429 var viewport = cornerstone.getViewport(element);
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430 viewport.voi.windowWidth += (deltaX / viewport.scale);
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431 viewport.voi.windowCenter += (deltaY / viewport.scale);
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432 cornerstone.setViewport(element, viewport);
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433 UpdateViewportInformation();
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434 }
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435 else if (mouseButton == 2) {
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436 var viewport = cornerstone.getViewport(element);
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437 viewport.translation.x += (deltaX / viewport.scale);
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438 viewport.translation.y += (deltaY / viewport.scale);
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439 cornerstone.setViewport(element, viewport);
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440 }
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441 else if (mouseButton == 3) {
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442 var viewport = cornerstone.getViewport(element);
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443 viewport.scale += (deltaY / 100);
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444 cornerstone.setViewport(element, viewport);
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445 UpdateViewportInformation();
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446 }
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447 });
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448
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449 $(document).mouseup(function (e) {
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450 $(document).unbind('mousemove');
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451 $(document).unbind('mouseup');
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452 });
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453 });
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454
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455 $('#dicomImage').on('mousewheel DOMMouseScroll', function (e) {
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456 // Firefox e.originalEvent.detail > 0 scroll back, < 0 scroll forward
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457 // chrome/safari e.originalEvent.wheelDelta < 0 scroll back, > 0 scroll forward
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458 if (e.originalEvent.wheelDelta < 0 || e.originalEvent.detail > 0) {
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459 currentImageIndex ++;
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460 if (currentImageIndex >= instances.length) {
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461 currentImageIndex = instances.length - 1;
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462 }
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463 } else {
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464 currentImageIndex --;
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465 if (currentImageIndex < 0) {
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466 currentImageIndex = 0;
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467 }
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468 }
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469
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470 updateTheImage(currentImageIndex);
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471 $('#slider').slider("option", "value", currentImageIndex);
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472
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473 //prevent page fom scrolling
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474 return false;
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475 });
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476 });
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477
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478
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479 $('#slider').slider({
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480 min: 0,
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481 max: instances.length - 1,
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482 slide: function(event, ui) {
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483 updateTheImage(ui.value);
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484 }
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485 });
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486
|
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487 var toolbar = $.jsPanel({
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488 position: { top: 50, left: 10 },
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489 size: { width: 155, height: 200 },
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490 content: $('#toolbar-content').clone().show(),
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|
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491 controls: { buttons: 'none' },
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|
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492 title: '<a target="_blank" href="http://www.orthanc-server.com/"><img src="images/orthanc-logo.png" /></a>'
|
|
|
493 });
|
|
|
494
|
|
|
495 $('#open-toolbar').click(function() {
|
|
|
496 toolbar.toggle();
|
|
|
497 });
|
|
|
498
|
|
|
499 $(toolbar).hide();
|
|
|
500
|
|
|
501 $('.toolbar-view', toolbar).buttonset()
|
|
|
502 .children().first().button({
|
|
|
503 icons: { primary: 'ui-icon-info' },
|
|
|
504 text: false
|
|
|
505 }).click(ToggleSeriesInformation).next().button({
|
|
|
506 icons: { primary: 'ui-icon-custom-inversion' },
|
|
|
507 text: false
|
|
|
508 }).click(ToggleInversion).next().button({
|
|
|
509 icons: { primary: 'ui-icon-custom-interpolation' },
|
|
|
510 text: false
|
|
|
511 }).click(ToggleInterpolation).next().button({
|
|
|
512 icons: { primary: 'ui-icon-circle-triangle-s' },
|
|
|
513 text: false
|
|
|
514 }).click(function() {
|
|
|
515 DownloadInstance(instances[currentImageIndex]);
|
|
|
516 });
|
|
|
517
|
|
|
518 $('.toolbar-zoom', toolbar).buttonset()
|
|
|
519 .children().first().button({
|
|
|
520 icons: { primary: 'ui-icon-image' },
|
|
|
521 text: false
|
|
|
522 }).click(AdjustZoom).next().button({
|
|
|
523 icons: { primary: 'ui-icon-zoomin' },
|
|
|
524 text: false
|
|
|
525 }).click(ZoomIn).next().button({
|
|
|
526 icons: { primary: 'ui-icon-zoomout' },
|
|
|
527 text: false
|
|
|
528 }).click(ZoomOut);
|
|
|
529
|
|
|
530 $('.toolbar-windowing', toolbar).buttonset()
|
|
|
531 .children().first().button({
|
|
|
532 icons: { primary: 'ui-icon-custom-default' },
|
|
|
533 text: false
|
|
|
534 }).click(SetDefaultWindowing).next().button({
|
|
|
535 icons: { primary: 'ui-icon-custom-stretch' },
|
|
|
536 text: false
|
|
|
537 }).click(SetFullWindowing).next().button({
|
|
|
538 icons: { primary: 'ui-icon-custom-lung' },
|
|
|
539 text: false
|
|
|
540 }).click(SetLungWindowing).next().button({
|
|
|
541 icons: { primary: 'ui-icon-custom-bone' },
|
|
|
542 text: false
|
|
|
543 }).click(SetBoneWindowing);
|
|
|
544
|
|
|
545
|
|
|
546 function SetCompression(c)
|
|
|
547 {
|
|
|
548 compression = c;
|
|
|
549 cornerstone.imageCache.purgeCache();
|
|
|
550 updateTheImage(currentImageIndex);
|
|
|
551 cornerstone.invalidateImageId(instances[currentImageIndex]);
|
|
|
552 }
|
|
|
553
|
|
|
554 $('.toolbar-quality', toolbar).buttonset()
|
|
|
555 .children().first().button({
|
|
|
556 label: 'L'
|
|
|
557 }).click(function() {
|
|
|
558 SetCompression('jpeg80');
|
|
|
559 }).next().button({
|
|
|
560 label: 'M'
|
|
|
561 }).click(function() {
|
|
|
562 SetCompression('jpeg95');
|
|
|
563 }).next().button({
|
|
|
564 label: 'H'
|
|
|
565 }).click(function() {
|
|
|
566 SetCompression('deflate');
|
|
|
567 });
|
|
|
568
|
|
|
569
|
|
|
570 ResizeCornerstone();
|
|
|
571 $(window).resize(function(e) {
|
|
|
572 if (!$(e.target).hasClass('jsPanel')) // Ignore toolbar resizing
|
|
|
573 {
|
|
|
574 ResizeCornerstone();
|
|
|
575 }
|
|
|
576 });
|
|
|
577
|
|
|
578 });
|
