Mercurial > hg > orthanc-webviewer
annotate WebApplication/viewer.js @ 318:c6db463fd4e0
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author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Tue, 26 Mar 2024 11:41:54 +0100 |
parents | 0a1ad7492050 |
children | 553fa466835a |
rev | line source |
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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 |
303 | 5 * Copyright (C) 2017-2022 Osimis S.A., Belgium |
314
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6 * Copyright (C) 2021-2024 Sebastien Jodogne, ICTEAM UCLouvain, Belgium |
0 | 7 * |
8 * This program is free software: you can redistribute it and/or | |
9 * modify it under the terms of the GNU Affero General Public License | |
10 * as published by the Free Software Foundation, either version 3 of | |
11 * the License, or (at your option) any later version. | |
12 * | |
13 * This program is distributed in the hope that it will be useful, but | |
14 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 * Affero General Public License for more details. | |
17 * | |
18 * You should have received a copy of the GNU Affero General Public License | |
19 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
20 **/ | |
21 | |
22 | |
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23 // Set the default compression |
0 | 24 var compression = 'jpeg95'; |
160 | 25 var isFirst = true; |
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26 //var compression = 'deflate'; |
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27 var unsupportedMessage = 'Error: The Orthanc core does not support the decoding of this image. Make sure that you have properly installed a suitable decoder plugin (e.g. the official GDCM decoder plugin).'; |
0 | 28 |
29 | |
30 // Prevent the access to IE | |
31 if(navigator.appVersion.indexOf("MSIE ") != -1) | |
32 { | |
33 alert("Please use Mozilla Firefox or Google Chrome. Microsoft Internet Explorer is not supported."); | |
34 } | |
35 | |
36 | |
219 | 37 function GetAuthorizationTokensFromUrl() { |
38 var urlVariables = window.location.search.substring(1).split('&'); | |
39 var dict = {}; | |
40 | |
41 for (var i = 0; i < urlVariables.length; i++) { | |
42 var split = urlVariables[i].split('='); | |
43 | |
44 if (split.length == 2 && (split[0] == "token" || split[0] == "auth-token" || split[0] == "authorization")) { | |
45 dict[split[0]] = split[1]; | |
46 } | |
47 } | |
48 return dict; | |
49 }; | |
50 | |
51 var authorizationTokens = GetAuthorizationTokensFromUrl(); | |
52 | |
53 /* Copy the authoziation toekn from the url search parameters into HTTP headers in every request to the Rest API. | |
54 Thanks to this behaviour, you may specify a ?token=xxx in your url and this will be passed | |
55 as the "token" header in every request to the API allowing you to use the authorization plugin */ | |
56 $.ajaxSetup( | |
57 { | |
58 headers : authorizationTokens | |
59 } | |
60 ); | |
61 | |
0 | 62 function ResizeCornerstone() |
63 { | |
64 $('#dicomImage').height($(window).height() - $('#slider').parent().height()); | |
65 var element = $('#dicomImage').get(0); | |
66 cornerstone.resize(element, true); | |
67 } | |
68 | |
69 | |
70 function SetWindowing(center, width) | |
71 { | |
72 var element = $('#dicomImage').get(0); | |
73 var viewport = cornerstone.getViewport(element); | |
74 viewport.voi.windowCenter = center; | |
75 viewport.voi.windowWidth = width; | |
76 cornerstone.setViewport(element, viewport); | |
77 UpdateViewportInformation(); | |
78 } | |
79 | |
80 | |
81 function SetFullWindowing() | |
82 { | |
83 var element = $('#dicomImage').get(0); | |
84 var viewport = cornerstone.getViewport(element); | |
85 var image = cornerstone.getEnabledElement(element).image; | |
86 | |
87 if (image.color) { | |
88 // Ignore color images | |
89 return; | |
90 } | |
91 | |
92 var minValue = image.minPixelValue; | |
93 var maxValue = image.maxPixelValue; | |
94 if (minValue == undefined || | |
95 maxValue == undefined || | |
96 minValue == maxValue) { | |
97 return; | |
98 } | |
99 | |
100 if (image.slope != undefined && | |
101 image.intercept != undefined) { | |
102 minValue = minValue * image.slope + image.intercept; | |
103 maxValue = maxValue * image.slope + image.intercept; | |
104 } | |
105 | |
106 viewport.voi.windowCenter = (minValue + maxValue) / 2.0; | |
107 viewport.voi.windowWidth = (maxValue - minValue) / 2.0; | |
108 cornerstone.setViewport(element, viewport); | |
109 UpdateViewportInformation(); | |
110 } | |
111 | |
112 | |
113 function SetDefaultWindowing() | |
114 { | |
115 var element = $('#dicomImage').get(0); | |
116 var viewport = cornerstone.getViewport(element); | |
117 var image = cornerstone.getEnabledElement(element).image; | |
118 | |
119 viewport.voi.windowCenter = image.windowCenter; | |
120 viewport.voi.windowWidth = image.windowWidth; | |
121 cornerstone.setViewport(element, viewport); | |
122 UpdateViewportInformation(); | |
123 } | |
124 | |
125 | |
126 function SetBoneWindowing() | |
127 { | |
128 SetWindowing(300, 2000); | |
129 } | |
130 | |
131 | |
132 function SetLungWindowing() | |
133 { | |
134 SetWindowing(-600, 1600); | |
135 } | |
136 | |
137 | |
138 function UpdateViewportInformation() | |
139 { | |
140 var element = $('#dicomImage').get(0); | |
141 var viewport = cornerstone.getViewport(element); | |
142 | |
143 $('#bottomleft').text('WW/WL:' + Math.round(viewport.voi.windowWidth) + '/' + Math.round(viewport.voi.windowCenter)); | |
144 $('#bottomright').text('Zoom: ' + viewport.scale.toFixed(2) + 'x'); | |
145 } | |
146 | |
147 | |
148 function ToggleSeriesInformation() | |
149 { | |
150 $('#topright').toggle(); | |
151 } | |
152 | |
153 | |
154 function ToggleInterpolation() | |
155 { | |
156 var element = $('#dicomImage').get(0); | |
157 var viewport = cornerstone.getViewport(element); | |
158 if (viewport.pixelReplication === true) { | |
159 viewport.pixelReplication = false; | |
160 } else { | |
161 viewport.pixelReplication = true; | |
162 } | |
163 cornerstone.setViewport(element, viewport); | |
164 } | |
165 | |
166 | |
167 function ToggleInversion() | |
168 { | |
169 var element = $('#dicomImage').get(0); | |
170 var viewport = cornerstone.getViewport(element); | |
171 if (viewport.invert === true) { | |
172 viewport.invert = false; | |
173 } else { | |
174 viewport.invert = true; | |
175 } | |
176 cornerstone.setViewport(element, viewport); | |
177 } | |
178 | |
179 | |
180 function DownloadInstance(instance) | |
181 { | |
182 // http://stackoverflow.com/a/3749395/881731 | |
183 var hiddenIFrameID = 'hiddenDownloader', | |
184 iframe = document.getElementById(hiddenIFrameID); | |
185 if (iframe === null) { | |
186 iframe = document.createElement('iframe'); | |
187 iframe.id = hiddenIFrameID; | |
188 iframe.style.display = 'none'; | |
189 document.body.appendChild(iframe); | |
190 } | |
185
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191 |
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192 var id = instance; |
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193 var pos = instance.indexOf('_'); |
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194 if (pos != -1) { |
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195 // Remove the frame index (after the underscore) |
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196 id = id.substring(0, pos); |
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197 } |
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198 |
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199 iframe.src = '../../instances/' + id + '/file'; |
0 | 200 } |
201 | |
202 | |
203 function AdjustZoom() | |
204 { | |
205 var element = $('#dicomImage').get(0); | |
206 cornerstone.fitToWindow(element); | |
207 } | |
208 | |
209 | |
210 function ZoomIn() | |
211 { | |
212 var element = $('#dicomImage').get(0); | |
213 var viewport = cornerstone.getViewport(element); | |
214 viewport.scale /= 0.5; | |
215 cornerstone.setViewport(element, viewport); | |
216 UpdateViewportInformation(); | |
217 } | |
218 | |
219 | |
220 function ZoomOut() | |
221 { | |
222 var element = $('#dicomImage').get(0); | |
223 var viewport = cornerstone.getViewport(element); | |
224 viewport.scale *= 0.5; | |
225 cornerstone.setViewport(element, viewport); | |
226 UpdateViewportInformation(); | |
227 } | |
228 | |
229 | |
230 | |
231 (function (cornerstone) { | |
232 'use strict'; | |
233 | |
234 function PrintRange(pixels) | |
235 { | |
236 var a = Infinity; | |
237 var b = -Infinity; | |
238 | |
239 for (var i = 0, length = pixels.length; i < length; i++) { | |
240 if (pixels[i] < a) | |
241 a = pixels[i]; | |
242 if (pixels[i] > b) | |
243 b = pixels[i]; | |
244 } | |
245 | |
246 console.log(a + ' ' + b); | |
247 } | |
248 | |
249 function ChangeDynamics(pixels, source1, target1, source2, target2) | |
250 { | |
251 var scale = (target2 - target1) / (source2 - source1); | |
252 var offset = (target1) - scale * source1; | |
253 | |
254 for (var i = 0, length = pixels.length; i < length; i++) { | |
255 pixels[i] = scale * pixels[i] + offset; | |
256 } | |
257 } | |
258 | |
259 | |
260 function getPixelDataDeflate(image) { | |
261 // Decompresses the base64 buffer that was compressed with Deflate | |
262 var s = pako.inflate(window.atob(image.Orthanc.PixelData)); | |
263 var pixels = null; | |
264 | |
265 if (image.color) { | |
266 var buf = new ArrayBuffer(s.length / 3 * 4); // RGB32 | |
267 pixels = new Uint8Array(buf); | |
268 var index = 0; | |
269 for (var i = 0, length = s.length; i < length; i += 3) { | |
270 pixels[index++] = s[i]; | |
271 pixels[index++] = s[i + 1]; | |
272 pixels[index++] = s[i + 2]; | |
273 pixels[index++] = 255; // Alpha channel | |
274 } | |
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275 } else{ |
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276 var buf = new ArrayBuffer(s.length * 2); // uint16_t or int16_t |
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277 |
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278 if (image.Orthanc.IsSigned) { |
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279 pixels = new Int16Array(buf); |
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280 } else { |
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281 pixels = new Uint16Array(buf); |
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282 } |
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283 |
0 | 284 var index = 0; |
285 for (var i = 0, length = s.length; i < length; i += 2) { | |
286 var lower = s[i]; | |
287 var upper = s[i + 1]; | |
288 pixels[index] = lower + upper * 256; | |
289 index++; | |
290 } | |
291 } | |
292 | |
293 return pixels; | |
294 } | |
295 | |
296 | |
297 // http://stackoverflow.com/a/11058858/881731 | |
298 function str2ab(str) { | |
299 var buf = new ArrayBuffer(str.length); | |
300 var pixels = new Uint8Array(buf); | |
301 for (var i = 0, strLen=str.length; i<strLen; i++) { | |
302 pixels[i] = str.charCodeAt(i); | |
303 } | |
304 return pixels; | |
305 } | |
306 | |
307 function getPixelDataJpeg(image) { | |
308 var jpegReader = new JpegImage(); | |
309 var jpeg = str2ab(window.atob(image.Orthanc.PixelData)); | |
310 jpegReader.parse(jpeg); | |
311 var s = jpegReader.getData(image.width, image.height); | |
312 var pixels = null; | |
313 | |
314 if (image.color) { | |
315 var buf = new ArrayBuffer(s.length / 3 * 4); // RGB32 | |
316 pixels = new Uint8Array(buf); | |
317 var index = 0; | |
318 for (var i = 0, length = s.length; i < length; i += 3) { | |
319 pixels[index++] = s[i]; | |
320 pixels[index++] = s[i + 1]; | |
321 pixels[index++] = s[i + 2]; | |
322 pixels[index++] = 255; // Alpha channel | |
323 } | |
324 } else { | |
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325 var buf = new ArrayBuffer(s.length * 2); // uint16_t or int16_t |
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326 |
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327 if (image.Orthanc.IsSigned) { |
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328 pixels = new Int16Array(buf); |
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329 } else { |
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330 pixels = new Uint16Array(buf); |
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331 } |
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332 |
0 | 333 var index = 0; |
334 for (var i = 0, length = s.length; i < length; i++) { | |
335 pixels[index] = s[i]; | |
336 index++; | |
337 } | |
338 | |
339 if (image.Orthanc.Stretched) { | |
340 ChangeDynamics(pixels, 0, image.Orthanc.StretchLow, 255, image.Orthanc.StretchHigh); | |
341 } | |
342 } | |
343 | |
344 return pixels; | |
345 } | |
346 | |
347 | |
348 function getOrthancImage(imageId) { | |
349 var result = null; | |
350 | |
351 $.ajax({ | |
352 type: 'GET', | |
353 url: '../instances/' + compression + '-' + imageId, | |
354 dataType: 'json', | |
355 cache: true, | |
356 async: false, | |
357 success: function(image) { | |
358 image.imageId = imageId; | |
359 if (image.color) | |
360 image.render = cornerstone.renderColorImage; | |
361 else | |
362 image.render = cornerstone.renderGrayscaleImage; | |
363 | |
160 | 364 if (isFirst) { |
365 if (image.Orthanc.PhotometricInterpretation == "MONOCHROME1") { | |
366 image.invert = true; | |
367 } else { | |
368 image.invert = false; | |
369 } | |
370 | |
371 isFirst = false; | |
372 } | |
373 | |
0 | 374 image.getPixelData = function() { |
375 if (image.Orthanc.Compression == 'Deflate') | |
376 return getPixelDataDeflate(this); | |
377 | |
378 if (image.Orthanc.Compression == 'Jpeg') | |
379 return getPixelDataJpeg(this); | |
380 | |
381 // Unknown compression | |
382 return null; | |
383 } | |
384 | |
385 result = image; | |
386 }, | |
387 error: function() { | |
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388 alert(unsupportedMessage); |
0 | 389 return null; |
390 } | |
391 }); | |
392 | |
393 var deferred = $.Deferred(); | |
394 deferred.resolve(result); | |
395 return deferred; | |
396 } | |
397 | |
398 // register our imageLoader plugin with cornerstone | |
399 cornerstone.registerImageLoader('', getOrthancImage); | |
400 | |
401 }(cornerstone)); | |
402 | |
403 | |
404 $(document).ready(function() { | |
405 $('#open-toolbar').button({ | |
406 icons: { primary: 'ui-icon-custom-orthanc' }, | |
407 text: false | |
408 }); | |
409 | |
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410 $('#unstable').tooltip(); |
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411 |
0 | 412 var series = window.url('?series', window.location.search); |
413 if (series == null) | |
414 return; | |
415 | |
416 console.log('Displaying series: ' + series); | |
417 var instances = [ ]; | |
418 | |
419 $.ajax({ | |
420 type: 'GET', | |
421 url: '../series/' + series, | |
422 dataType: 'json', | |
423 cache: false, | |
424 async: false, | |
425 success: function(volume) { | |
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426 if (volume.Slices.length != 0) { |
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427 instances = volume.Slices; |
302 | 428 var topRightElement = $('<span>'); |
429 topRightElement.append($('<span>', { text: volume.PatientID})); | |
430 topRightElement.append($('<br/>')); | |
431 topRightElement.append($('<span>', { text: volume.PatientName})); | |
432 topRightElement.append($('<br/>')); | |
433 topRightElement.append($('<span>', { text: volume.StudyDescription})); | |
434 topRightElement.append($('<br/>')); | |
435 topRightElement.append($('<span>', { text: volume.SeriesDescription})); | |
436 topRightElement.append($('<br/>')); | |
437 | |
438 $('#topright').empty(); | |
439 $('#topright').append(topRightElement); | |
0 | 440 } |
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441 }, |
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442 failure: function() { |
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443 alert(unsupportedMessage); |
0 | 444 } |
445 }); | |
446 | |
447 if (instances.length == 0) | |
448 { | |
449 console.log('No image in this series'); | |
450 return; | |
451 } | |
452 | |
453 | |
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454 $.ajax({ |
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455 type: 'GET', |
19 | 456 url: '../is-stable-series/' + series, |
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457 dataType: 'json', |
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458 cache: false, |
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459 async: true, |
19 | 460 success: function(stable) { |
461 if (!stable) { | |
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462 $('#unstable').show(); |
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463 } |
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464 } |
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465 }); |
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466 |
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467 |
0 | 468 var currentImageIndex = 0; |
469 | |
470 // updates the image display | |
471 function updateTheImage(imageIndex) { | |
472 return cornerstone.loadAndCacheImage(instances[imageIndex]).then(function(image) { | |
473 currentImageIndex = imageIndex; | |
474 var viewport = cornerstone.getViewport(element); | |
475 cornerstone.displayImage(element, image, viewport); | |
476 }); | |
477 } | |
478 | |
479 // image enable the element | |
480 var element = $('#dicomImage').get(0); | |
481 cornerstone.enable(element); | |
482 | |
483 // set event handlers | |
484 /*function onImageRendered(e, eventData) { | |
485 $('#topright').text('Render Time:' + eventData.renderTimeInMs + ' ms'); | |
486 } | |
487 $(element).on('CornerstoneImageRendered', onImageRendered);*/ | |
488 | |
489 // load and display the image | |
490 var imagePromise = updateTheImage(0); | |
491 | |
492 // add handlers for mouse events once the image is loaded. | |
493 imagePromise.then(function() { | |
494 viewport = cornerstone.getViewport(element); | |
495 UpdateViewportInformation(); | |
496 | |
497 // add event handlers to pan image on mouse move | |
498 $('#dicomImage').mousedown(function (e) { | |
499 var lastX = e.pageX; | |
500 var lastY = e.pageY; | |
501 var mouseButton = e.which; | |
502 | |
503 $(toolbar).hide(); | |
504 | |
505 $(document).mousemove(function (e) { | |
506 var deltaX = e.pageX - lastX, | |
507 deltaY = e.pageY - lastY; | |
508 lastX = e.pageX; | |
509 lastY = e.pageY; | |
510 | |
511 if (mouseButton == 1) { | |
512 var viewport = cornerstone.getViewport(element); | |
513 viewport.voi.windowWidth += (deltaX / viewport.scale); | |
514 viewport.voi.windowCenter += (deltaY / viewport.scale); | |
515 cornerstone.setViewport(element, viewport); | |
516 UpdateViewportInformation(); | |
517 } | |
518 else if (mouseButton == 2) { | |
519 var viewport = cornerstone.getViewport(element); | |
520 viewport.translation.x += (deltaX / viewport.scale); | |
521 viewport.translation.y += (deltaY / viewport.scale); | |
522 cornerstone.setViewport(element, viewport); | |
523 } | |
524 else if (mouseButton == 3) { | |
525 var viewport = cornerstone.getViewport(element); | |
526 viewport.scale += (deltaY / 100); | |
527 cornerstone.setViewport(element, viewport); | |
528 UpdateViewportInformation(); | |
529 } | |
530 }); | |
531 | |
532 $(document).mouseup(function (e) { | |
533 $(document).unbind('mousemove'); | |
534 $(document).unbind('mouseup'); | |
535 }); | |
536 }); | |
537 | |
538 $('#dicomImage').on('mousewheel DOMMouseScroll', function (e) { | |
539 // Firefox e.originalEvent.detail > 0 scroll back, < 0 scroll forward | |
540 // chrome/safari e.originalEvent.wheelDelta < 0 scroll back, > 0 scroll forward | |
541 if (e.originalEvent.wheelDelta < 0 || e.originalEvent.detail > 0) { | |
542 currentImageIndex ++; | |
543 if (currentImageIndex >= instances.length) { | |
544 currentImageIndex = instances.length - 1; | |
545 } | |
546 } else { | |
547 currentImageIndex --; | |
548 if (currentImageIndex < 0) { | |
549 currentImageIndex = 0; | |
550 } | |
551 } | |
552 | |
553 updateTheImage(currentImageIndex); | |
554 $('#slider').slider("option", "value", currentImageIndex); | |
555 | |
556 //prevent page fom scrolling | |
557 return false; | |
558 }); | |
559 }); | |
560 | |
561 | |
562 $('#slider').slider({ | |
563 min: 0, | |
564 max: instances.length - 1, | |
565 slide: function(event, ui) { | |
566 updateTheImage(ui.value); | |
567 } | |
568 }); | |
569 | |
570 var toolbar = $.jsPanel({ | |
571 position: { top: 50, left: 10 }, | |
572 size: { width: 155, height: 200 }, | |
573 content: $('#toolbar-content').clone().show(), | |
574 controls: { buttons: 'none' }, | |
575 title: '<a target="_blank" href="http://www.orthanc-server.com/"><img src="images/orthanc-logo.png" /></a>' | |
576 }); | |
577 | |
578 $('#open-toolbar').click(function() { | |
579 toolbar.toggle(); | |
580 }); | |
581 | |
582 $(toolbar).hide(); | |
583 | |
584 $('.toolbar-view', toolbar).buttonset() | |
585 .children().first().button({ | |
586 icons: { primary: 'ui-icon-info' }, | |
587 text: false | |
588 }).click(ToggleSeriesInformation).next().button({ | |
589 icons: { primary: 'ui-icon-custom-inversion' }, | |
590 text: false | |
591 }).click(ToggleInversion).next().button({ | |
592 icons: { primary: 'ui-icon-custom-interpolation' }, | |
593 text: false | |
594 }).click(ToggleInterpolation).next().button({ | |
595 icons: { primary: 'ui-icon-circle-triangle-s' }, | |
596 text: false | |
597 }).click(function() { | |
598 DownloadInstance(instances[currentImageIndex]); | |
599 }); | |
600 | |
601 $('.toolbar-zoom', toolbar).buttonset() | |
602 .children().first().button({ | |
603 icons: { primary: 'ui-icon-image' }, | |
604 text: false | |
605 }).click(AdjustZoom).next().button({ | |
606 icons: { primary: 'ui-icon-zoomin' }, | |
607 text: false | |
608 }).click(ZoomIn).next().button({ | |
609 icons: { primary: 'ui-icon-zoomout' }, | |
610 text: false | |
611 }).click(ZoomOut); | |
612 | |
613 $('.toolbar-windowing', toolbar).buttonset() | |
614 .children().first().button({ | |
615 icons: { primary: 'ui-icon-custom-default' }, | |
616 text: false | |
617 }).click(SetDefaultWindowing).next().button({ | |
618 icons: { primary: 'ui-icon-custom-stretch' }, | |
619 text: false | |
620 }).click(SetFullWindowing).next().button({ | |
621 icons: { primary: 'ui-icon-custom-lung' }, | |
622 text: false | |
623 }).click(SetLungWindowing).next().button({ | |
624 icons: { primary: 'ui-icon-custom-bone' }, | |
625 text: false | |
626 }).click(SetBoneWindowing); | |
627 | |
628 | |
629 function SetCompression(c) | |
630 { | |
631 compression = c; | |
632 cornerstone.imageCache.purgeCache(); | |
633 updateTheImage(currentImageIndex); | |
634 cornerstone.invalidateImageId(instances[currentImageIndex]); | |
635 } | |
636 | |
637 $('.toolbar-quality', toolbar).buttonset() | |
638 .children().first().button({ | |
639 label: 'L' | |
640 }).click(function() { | |
641 SetCompression('jpeg80'); | |
642 }).next().button({ | |
643 label: 'M' | |
644 }).click(function() { | |
645 SetCompression('jpeg95'); | |
646 }).next().button({ | |
647 label: 'H' | |
648 }).click(function() { | |
649 SetCompression('deflate'); | |
650 }); | |
651 | |
652 | |
653 ResizeCornerstone(); | |
654 $(window).resize(function(e) { | |
655 if (!$(e.target).hasClass('jsPanel')) // Ignore toolbar resizing | |
656 { | |
657 ResizeCornerstone(); | |
658 } | |
659 }); | |
660 | |
661 }); |