Mercurial > hg > orthanc-webviewer
annotate WebApplication/viewer.js @ 159:5dc54316d68b
shared copyright with osimis
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Wed, 04 Jan 2017 16:41:43 +0100 |
| parents | f99adade8b77 |
| children | b0910ae2ace5 |
| rev | line source |
|---|---|
| 0 | 1 /** |
| 2 * Orthanc - A Lightweight, RESTful DICOM Store | |
| 122 | 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics |
| 0 | 4 * Department, University Hospital of Liege, Belgium |
|
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5 * Copyright (C) 2017 Osimis, Belgium |
| 0 | 6 * |
| 7 * This program is free software: you can redistribute it and/or | |
| 8 * modify it under the terms of the GNU Affero General Public License | |
| 9 * as published by the Free Software Foundation, either version 3 of | |
| 10 * the License, or (at your option) any later version. | |
| 11 * | |
| 12 * This program is distributed in the hope that it will be useful, but | |
| 13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 * Affero General Public License for more details. | |
| 16 * | |
| 17 * You should have received a copy of the GNU Affero General Public License | |
| 18 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 19 **/ | |
| 20 | |
| 21 | |
|
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22 // Set the default compression |
| 0 | 23 var compression = 'jpeg95'; |
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24 //var compression = 'deflate'; |
| 0 | 25 |
| 26 | |
| 27 // Prevent the access to IE | |
| 28 if(navigator.appVersion.indexOf("MSIE ") != -1) | |
| 29 { | |
| 30 alert("Please use Mozilla Firefox or Google Chrome. Microsoft Internet Explorer is not supported."); | |
| 31 } | |
| 32 | |
| 33 | |
| 34 function ResizeCornerstone() | |
| 35 { | |
| 36 $('#dicomImage').height($(window).height() - $('#slider').parent().height()); | |
| 37 var element = $('#dicomImage').get(0); | |
| 38 cornerstone.resize(element, true); | |
| 39 } | |
| 40 | |
| 41 | |
| 42 function SetWindowing(center, width) | |
| 43 { | |
| 44 var element = $('#dicomImage').get(0); | |
| 45 var viewport = cornerstone.getViewport(element); | |
| 46 viewport.voi.windowCenter = center; | |
| 47 viewport.voi.windowWidth = width; | |
| 48 cornerstone.setViewport(element, viewport); | |
| 49 UpdateViewportInformation(); | |
| 50 } | |
| 51 | |
| 52 | |
| 53 function SetFullWindowing() | |
| 54 { | |
| 55 var element = $('#dicomImage').get(0); | |
| 56 var viewport = cornerstone.getViewport(element); | |
| 57 var image = cornerstone.getEnabledElement(element).image; | |
| 58 | |
| 59 if (image.color) { | |
| 60 // Ignore color images | |
| 61 return; | |
| 62 } | |
| 63 | |
| 64 var minValue = image.minPixelValue; | |
| 65 var maxValue = image.maxPixelValue; | |
| 66 if (minValue == undefined || | |
| 67 maxValue == undefined || | |
| 68 minValue == maxValue) { | |
| 69 return; | |
| 70 } | |
| 71 | |
| 72 if (image.slope != undefined && | |
| 73 image.intercept != undefined) { | |
| 74 minValue = minValue * image.slope + image.intercept; | |
| 75 maxValue = maxValue * image.slope + image.intercept; | |
| 76 } | |
| 77 | |
| 78 viewport.voi.windowCenter = (minValue + maxValue) / 2.0; | |
| 79 viewport.voi.windowWidth = (maxValue - minValue) / 2.0; | |
| 80 cornerstone.setViewport(element, viewport); | |
| 81 UpdateViewportInformation(); | |
| 82 } | |
| 83 | |
| 84 | |
| 85 function SetDefaultWindowing() | |
| 86 { | |
| 87 var element = $('#dicomImage').get(0); | |
| 88 var viewport = cornerstone.getViewport(element); | |
| 89 var image = cornerstone.getEnabledElement(element).image; | |
| 90 | |
| 91 viewport.voi.windowCenter = image.windowCenter; | |
| 92 viewport.voi.windowWidth = image.windowWidth; | |
| 93 cornerstone.setViewport(element, viewport); | |
| 94 UpdateViewportInformation(); | |
| 95 } | |
| 96 | |
| 97 | |
| 98 function SetBoneWindowing() | |
| 99 { | |
| 100 SetWindowing(300, 2000); | |
| 101 } | |
| 102 | |
| 103 | |
| 104 function SetLungWindowing() | |
| 105 { | |
| 106 SetWindowing(-600, 1600); | |
| 107 } | |
| 108 | |
| 109 | |
| 110 function UpdateViewportInformation() | |
| 111 { | |
| 112 var element = $('#dicomImage').get(0); | |
| 113 var viewport = cornerstone.getViewport(element); | |
| 114 | |
| 115 $('#bottomleft').text('WW/WL:' + Math.round(viewport.voi.windowWidth) + '/' + Math.round(viewport.voi.windowCenter)); | |
| 116 $('#bottomright').text('Zoom: ' + viewport.scale.toFixed(2) + 'x'); | |
| 117 } | |
| 118 | |
| 119 | |
| 120 function ToggleSeriesInformation() | |
| 121 { | |
| 122 $('#topright').toggle(); | |
| 123 } | |
| 124 | |
| 125 | |
| 126 function ToggleInterpolation() | |
| 127 { | |
| 128 var element = $('#dicomImage').get(0); | |
| 129 var viewport = cornerstone.getViewport(element); | |
| 130 if (viewport.pixelReplication === true) { | |
| 131 viewport.pixelReplication = false; | |
| 132 } else { | |
| 133 viewport.pixelReplication = true; | |
| 134 } | |
| 135 cornerstone.setViewport(element, viewport); | |
| 136 } | |
| 137 | |
| 138 | |
| 139 function ToggleInversion() | |
| 140 { | |
| 141 var element = $('#dicomImage').get(0); | |
| 142 var viewport = cornerstone.getViewport(element); | |
| 143 if (viewport.invert === true) { | |
| 144 viewport.invert = false; | |
| 145 } else { | |
| 146 viewport.invert = true; | |
| 147 } | |
| 148 cornerstone.setViewport(element, viewport); | |
| 149 } | |
| 150 | |
| 151 | |
| 152 function DownloadInstance(instance) | |
| 153 { | |
| 154 // http://stackoverflow.com/a/3749395/881731 | |
| 155 var hiddenIFrameID = 'hiddenDownloader', | |
| 156 iframe = document.getElementById(hiddenIFrameID); | |
| 157 if (iframe === null) { | |
| 158 iframe = document.createElement('iframe'); | |
| 159 iframe.id = hiddenIFrameID; | |
| 160 iframe.style.display = 'none'; | |
| 161 document.body.appendChild(iframe); | |
| 162 } | |
| 163 iframe.src = '../../instances/' + instance + '/file'; | |
| 164 } | |
| 165 | |
| 166 | |
| 167 function AdjustZoom() | |
| 168 { | |
| 169 var element = $('#dicomImage').get(0); | |
| 170 cornerstone.fitToWindow(element); | |
| 171 } | |
| 172 | |
| 173 | |
| 174 function ZoomIn() | |
| 175 { | |
| 176 var element = $('#dicomImage').get(0); | |
| 177 var viewport = cornerstone.getViewport(element); | |
| 178 viewport.scale /= 0.5; | |
| 179 cornerstone.setViewport(element, viewport); | |
| 180 UpdateViewportInformation(); | |
| 181 } | |
| 182 | |
| 183 | |
| 184 function ZoomOut() | |
| 185 { | |
| 186 var element = $('#dicomImage').get(0); | |
| 187 var viewport = cornerstone.getViewport(element); | |
| 188 viewport.scale *= 0.5; | |
| 189 cornerstone.setViewport(element, viewport); | |
| 190 UpdateViewportInformation(); | |
| 191 } | |
| 192 | |
| 193 | |
| 194 | |
| 195 (function (cornerstone) { | |
| 196 'use strict'; | |
| 197 | |
| 198 function PrintRange(pixels) | |
| 199 { | |
| 200 var a = Infinity; | |
| 201 var b = -Infinity; | |
| 202 | |
| 203 for (var i = 0, length = pixels.length; i < length; i++) { | |
| 204 if (pixels[i] < a) | |
| 205 a = pixels[i]; | |
| 206 if (pixels[i] > b) | |
| 207 b = pixels[i]; | |
| 208 } | |
| 209 | |
| 210 console.log(a + ' ' + b); | |
| 211 } | |
| 212 | |
| 213 function ChangeDynamics(pixels, source1, target1, source2, target2) | |
| 214 { | |
| 215 var scale = (target2 - target1) / (source2 - source1); | |
| 216 var offset = (target1) - scale * source1; | |
| 217 | |
| 218 for (var i = 0, length = pixels.length; i < length; i++) { | |
| 219 pixels[i] = scale * pixels[i] + offset; | |
| 220 } | |
| 221 } | |
| 222 | |
| 223 | |
| 224 function getPixelDataDeflate(image) { | |
| 225 // Decompresses the base64 buffer that was compressed with Deflate | |
| 226 var s = pako.inflate(window.atob(image.Orthanc.PixelData)); | |
| 227 var pixels = null; | |
| 228 | |
| 229 if (image.color) { | |
| 230 var buf = new ArrayBuffer(s.length / 3 * 4); // RGB32 | |
| 231 pixels = new Uint8Array(buf); | |
| 232 var index = 0; | |
| 233 for (var i = 0, length = s.length; i < length; i += 3) { | |
| 234 pixels[index++] = s[i]; | |
| 235 pixels[index++] = s[i + 1]; | |
| 236 pixels[index++] = s[i + 2]; | |
| 237 pixels[index++] = 255; // Alpha channel | |
| 238 } | |
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239 } else{ |
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240 var buf = new ArrayBuffer(s.length * 2); // uint16_t or int16_t |
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241 |
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242 if (image.Orthanc.IsSigned) { |
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243 pixels = new Int16Array(buf); |
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244 } else { |
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245 pixels = new Uint16Array(buf); |
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246 } |
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247 |
| 0 | 248 var index = 0; |
| 249 for (var i = 0, length = s.length; i < length; i += 2) { | |
| 250 var lower = s[i]; | |
| 251 var upper = s[i + 1]; | |
| 252 pixels[index] = lower + upper * 256; | |
| 253 index++; | |
| 254 } | |
| 255 } | |
| 256 | |
| 257 return pixels; | |
| 258 } | |
| 259 | |
| 260 | |
| 261 // http://stackoverflow.com/a/11058858/881731 | |
| 262 function str2ab(str) { | |
| 263 var buf = new ArrayBuffer(str.length); | |
| 264 var pixels = new Uint8Array(buf); | |
| 265 for (var i = 0, strLen=str.length; i<strLen; i++) { | |
| 266 pixels[i] = str.charCodeAt(i); | |
| 267 } | |
| 268 return pixels; | |
| 269 } | |
| 270 | |
| 271 function getPixelDataJpeg(image) { | |
| 272 var jpegReader = new JpegImage(); | |
| 273 var jpeg = str2ab(window.atob(image.Orthanc.PixelData)); | |
| 274 jpegReader.parse(jpeg); | |
| 275 var s = jpegReader.getData(image.width, image.height); | |
| 276 var pixels = null; | |
| 277 | |
| 278 if (image.color) { | |
| 279 var buf = new ArrayBuffer(s.length / 3 * 4); // RGB32 | |
| 280 pixels = new Uint8Array(buf); | |
| 281 var index = 0; | |
| 282 for (var i = 0, length = s.length; i < length; i += 3) { | |
| 283 pixels[index++] = s[i]; | |
| 284 pixels[index++] = s[i + 1]; | |
| 285 pixels[index++] = s[i + 2]; | |
| 286 pixels[index++] = 255; // Alpha channel | |
| 287 } | |
| 288 } else { | |
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289 var buf = new ArrayBuffer(s.length * 2); // uint16_t or int16_t |
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290 |
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291 if (image.Orthanc.IsSigned) { |
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292 pixels = new Int16Array(buf); |
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293 } else { |
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294 pixels = new Uint16Array(buf); |
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295 } |
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296 |
| 0 | 297 var index = 0; |
| 298 for (var i = 0, length = s.length; i < length; i++) { | |
| 299 pixels[index] = s[i]; | |
| 300 index++; | |
| 301 } | |
| 302 | |
| 303 if (image.Orthanc.Stretched) { | |
| 304 ChangeDynamics(pixels, 0, image.Orthanc.StretchLow, 255, image.Orthanc.StretchHigh); | |
| 305 } | |
| 306 } | |
| 307 | |
| 308 return pixels; | |
| 309 } | |
| 310 | |
| 311 | |
| 312 function getOrthancImage(imageId) { | |
| 313 var result = null; | |
| 314 | |
| 315 $.ajax({ | |
| 316 type: 'GET', | |
| 317 url: '../instances/' + compression + '-' + imageId, | |
| 318 dataType: 'json', | |
| 319 cache: true, | |
| 320 async: false, | |
| 321 success: function(image) { | |
| 322 image.imageId = imageId; | |
| 323 if (image.color) | |
| 324 image.render = cornerstone.renderColorImage; | |
| 325 else | |
| 326 image.render = cornerstone.renderGrayscaleImage; | |
| 327 | |
| 328 image.getPixelData = function() { | |
| 329 if (image.Orthanc.Compression == 'Deflate') | |
| 330 return getPixelDataDeflate(this); | |
| 331 | |
| 332 if (image.Orthanc.Compression == 'Jpeg') | |
| 333 return getPixelDataJpeg(this); | |
| 334 | |
| 335 // Unknown compression | |
| 336 return null; | |
| 337 } | |
| 338 | |
| 339 result = image; | |
| 340 }, | |
| 341 error: function() { | |
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342 alert('Error: This image is not supported by the Web viewer.'); |
| 0 | 343 return null; |
| 344 } | |
| 345 }); | |
| 346 | |
| 347 var deferred = $.Deferred(); | |
| 348 deferred.resolve(result); | |
| 349 return deferred; | |
| 350 } | |
| 351 | |
| 352 // register our imageLoader plugin with cornerstone | |
| 353 cornerstone.registerImageLoader('', getOrthancImage); | |
| 354 | |
| 355 }(cornerstone)); | |
| 356 | |
| 357 | |
| 358 $(document).ready(function() { | |
| 359 $('#open-toolbar').button({ | |
| 360 icons: { primary: 'ui-icon-custom-orthanc' }, | |
| 361 text: false | |
| 362 }); | |
| 363 | |
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364 $('#unstable').tooltip(); |
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365 |
| 0 | 366 var series = window.url('?series', window.location.search); |
| 367 if (series == null) | |
| 368 return; | |
| 369 | |
| 370 console.log('Displaying series: ' + series); | |
| 371 var instances = [ ]; | |
| 372 | |
| 373 $.ajax({ | |
| 374 type: 'GET', | |
| 375 url: '../series/' + series, | |
| 376 dataType: 'json', | |
| 377 cache: false, | |
| 378 async: false, | |
| 379 success: function(volume) { | |
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380 if (volume.Slices.length != 0) { |
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381 instances = volume.Slices; |
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382 $('#topright').html(volume.PatientID + '<br/>' + |
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383 volume.PatientName + '<br/>' + |
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384 volume.StudyDescription + '<br/>' + |
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385 volume.SeriesDescription + '<br/>'); |
| 0 | 386 } |
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387 }, |
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388 failure: function() { |
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389 alert('Error: This image is not supported by the Web viewer.'); |
| 0 | 390 } |
| 391 }); | |
| 392 | |
| 393 if (instances.length == 0) | |
| 394 { | |
| 395 console.log('No image in this series'); | |
| 396 return; | |
| 397 } | |
| 398 | |
| 399 | |
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400 $.ajax({ |
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401 type: 'GET', |
| 19 | 402 url: '../is-stable-series/' + series, |
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403 dataType: 'json', |
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404 cache: false, |
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405 async: true, |
| 19 | 406 success: function(stable) { |
| 407 if (!stable) { | |
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408 $('#unstable').show(); |
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409 } |
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410 } |
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411 }); |
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412 |
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413 |
| 0 | 414 var currentImageIndex = 0; |
| 415 | |
| 416 // updates the image display | |
| 417 function updateTheImage(imageIndex) { | |
| 418 return cornerstone.loadAndCacheImage(instances[imageIndex]).then(function(image) { | |
| 419 currentImageIndex = imageIndex; | |
| 420 var viewport = cornerstone.getViewport(element); | |
| 421 cornerstone.displayImage(element, image, viewport); | |
| 422 }); | |
| 423 } | |
| 424 | |
| 425 // image enable the element | |
| 426 var element = $('#dicomImage').get(0); | |
| 427 cornerstone.enable(element); | |
| 428 | |
| 429 // set event handlers | |
| 430 /*function onImageRendered(e, eventData) { | |
| 431 $('#topright').text('Render Time:' + eventData.renderTimeInMs + ' ms'); | |
| 432 } | |
| 433 $(element).on('CornerstoneImageRendered', onImageRendered);*/ | |
| 434 | |
| 435 // load and display the image | |
| 436 var imagePromise = updateTheImage(0); | |
| 437 | |
| 438 // add handlers for mouse events once the image is loaded. | |
| 439 imagePromise.then(function() { | |
| 440 viewport = cornerstone.getViewport(element); | |
| 441 UpdateViewportInformation(); | |
| 442 | |
| 443 // add event handlers to pan image on mouse move | |
| 444 $('#dicomImage').mousedown(function (e) { | |
| 445 var lastX = e.pageX; | |
| 446 var lastY = e.pageY; | |
| 447 var mouseButton = e.which; | |
| 448 | |
| 449 $(toolbar).hide(); | |
| 450 | |
| 451 $(document).mousemove(function (e) { | |
| 452 var deltaX = e.pageX - lastX, | |
| 453 deltaY = e.pageY - lastY; | |
| 454 lastX = e.pageX; | |
| 455 lastY = e.pageY; | |
| 456 | |
| 457 if (mouseButton == 1) { | |
| 458 var viewport = cornerstone.getViewport(element); | |
| 459 viewport.voi.windowWidth += (deltaX / viewport.scale); | |
| 460 viewport.voi.windowCenter += (deltaY / viewport.scale); | |
| 461 cornerstone.setViewport(element, viewport); | |
| 462 UpdateViewportInformation(); | |
| 463 } | |
| 464 else if (mouseButton == 2) { | |
| 465 var viewport = cornerstone.getViewport(element); | |
| 466 viewport.translation.x += (deltaX / viewport.scale); | |
| 467 viewport.translation.y += (deltaY / viewport.scale); | |
| 468 cornerstone.setViewport(element, viewport); | |
| 469 } | |
| 470 else if (mouseButton == 3) { | |
| 471 var viewport = cornerstone.getViewport(element); | |
| 472 viewport.scale += (deltaY / 100); | |
| 473 cornerstone.setViewport(element, viewport); | |
| 474 UpdateViewportInformation(); | |
| 475 } | |
| 476 }); | |
| 477 | |
| 478 $(document).mouseup(function (e) { | |
| 479 $(document).unbind('mousemove'); | |
| 480 $(document).unbind('mouseup'); | |
| 481 }); | |
| 482 }); | |
| 483 | |
| 484 $('#dicomImage').on('mousewheel DOMMouseScroll', function (e) { | |
| 485 // Firefox e.originalEvent.detail > 0 scroll back, < 0 scroll forward | |
| 486 // chrome/safari e.originalEvent.wheelDelta < 0 scroll back, > 0 scroll forward | |
| 487 if (e.originalEvent.wheelDelta < 0 || e.originalEvent.detail > 0) { | |
| 488 currentImageIndex ++; | |
| 489 if (currentImageIndex >= instances.length) { | |
| 490 currentImageIndex = instances.length - 1; | |
| 491 } | |
| 492 } else { | |
| 493 currentImageIndex --; | |
| 494 if (currentImageIndex < 0) { | |
| 495 currentImageIndex = 0; | |
| 496 } | |
| 497 } | |
| 498 | |
| 499 updateTheImage(currentImageIndex); | |
| 500 $('#slider').slider("option", "value", currentImageIndex); | |
| 501 | |
| 502 //prevent page fom scrolling | |
| 503 return false; | |
| 504 }); | |
| 505 }); | |
| 506 | |
| 507 | |
| 508 $('#slider').slider({ | |
| 509 min: 0, | |
| 510 max: instances.length - 1, | |
| 511 slide: function(event, ui) { | |
| 512 updateTheImage(ui.value); | |
| 513 } | |
| 514 }); | |
| 515 | |
| 516 var toolbar = $.jsPanel({ | |
| 517 position: { top: 50, left: 10 }, | |
| 518 size: { width: 155, height: 200 }, | |
| 519 content: $('#toolbar-content').clone().show(), | |
| 520 controls: { buttons: 'none' }, | |
| 521 title: '<a target="_blank" href="http://www.orthanc-server.com/"><img src="images/orthanc-logo.png" /></a>' | |
| 522 }); | |
| 523 | |
| 524 $('#open-toolbar').click(function() { | |
| 525 toolbar.toggle(); | |
| 526 }); | |
| 527 | |
| 528 $(toolbar).hide(); | |
| 529 | |
| 530 $('.toolbar-view', toolbar).buttonset() | |
| 531 .children().first().button({ | |
| 532 icons: { primary: 'ui-icon-info' }, | |
| 533 text: false | |
| 534 }).click(ToggleSeriesInformation).next().button({ | |
| 535 icons: { primary: 'ui-icon-custom-inversion' }, | |
| 536 text: false | |
| 537 }).click(ToggleInversion).next().button({ | |
| 538 icons: { primary: 'ui-icon-custom-interpolation' }, | |
| 539 text: false | |
| 540 }).click(ToggleInterpolation).next().button({ | |
| 541 icons: { primary: 'ui-icon-circle-triangle-s' }, | |
| 542 text: false | |
| 543 }).click(function() { | |
| 544 DownloadInstance(instances[currentImageIndex]); | |
| 545 }); | |
| 546 | |
| 547 $('.toolbar-zoom', toolbar).buttonset() | |
| 548 .children().first().button({ | |
| 549 icons: { primary: 'ui-icon-image' }, | |
| 550 text: false | |
| 551 }).click(AdjustZoom).next().button({ | |
| 552 icons: { primary: 'ui-icon-zoomin' }, | |
| 553 text: false | |
| 554 }).click(ZoomIn).next().button({ | |
| 555 icons: { primary: 'ui-icon-zoomout' }, | |
| 556 text: false | |
| 557 }).click(ZoomOut); | |
| 558 | |
| 559 $('.toolbar-windowing', toolbar).buttonset() | |
| 560 .children().first().button({ | |
| 561 icons: { primary: 'ui-icon-custom-default' }, | |
| 562 text: false | |
| 563 }).click(SetDefaultWindowing).next().button({ | |
| 564 icons: { primary: 'ui-icon-custom-stretch' }, | |
| 565 text: false | |
| 566 }).click(SetFullWindowing).next().button({ | |
| 567 icons: { primary: 'ui-icon-custom-lung' }, | |
| 568 text: false | |
| 569 }).click(SetLungWindowing).next().button({ | |
| 570 icons: { primary: 'ui-icon-custom-bone' }, | |
| 571 text: false | |
| 572 }).click(SetBoneWindowing); | |
| 573 | |
| 574 | |
| 575 function SetCompression(c) | |
| 576 { | |
| 577 compression = c; | |
| 578 cornerstone.imageCache.purgeCache(); | |
| 579 updateTheImage(currentImageIndex); | |
| 580 cornerstone.invalidateImageId(instances[currentImageIndex]); | |
| 581 } | |
| 582 | |
| 583 $('.toolbar-quality', toolbar).buttonset() | |
| 584 .children().first().button({ | |
| 585 label: 'L' | |
| 586 }).click(function() { | |
| 587 SetCompression('jpeg80'); | |
| 588 }).next().button({ | |
| 589 label: 'M' | |
| 590 }).click(function() { | |
| 591 SetCompression('jpeg95'); | |
| 592 }).next().button({ | |
| 593 label: 'H' | |
| 594 }).click(function() { | |
| 595 SetCompression('deflate'); | |
| 596 }); | |
| 597 | |
| 598 | |
| 599 ResizeCornerstone(); | |
| 600 $(window).resize(function(e) { | |
| 601 if (!$(e.target).hasClass('jsPanel')) // Ignore toolbar resizing | |
| 602 { | |
| 603 ResizeCornerstone(); | |
| 604 } | |
| 605 }); | |
| 606 | |
| 607 }); |