Mercurial > hg > orthanc-webviewer
annotate WebApplication/viewer.js @ 3:ca16691db433
simplification
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Thu, 26 Feb 2015 11:39:28 +0100 |
parents | c919d488471f |
children | ecefd45026bf |
rev | line source |
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0 | 1 /** |
2 * Orthanc - A Lightweight, RESTful DICOM Store | |
3 * Copyright (C) 2012-2015 Sebastien Jodogne, Medical Physics | |
4 * Department, University Hospital of Liege, Belgium | |
5 * | |
6 * This program is free software: you can redistribute it and/or | |
7 * modify it under the terms of the GNU Affero General Public License | |
8 * as published by the Free Software Foundation, either version 3 of | |
9 * the License, or (at your option) any later version. | |
10 * | |
11 * This program is distributed in the hope that it will be useful, but | |
12 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 * Affero General Public License for more details. | |
15 * | |
16 * You should have received a copy of the GNU Affero General Public License | |
17 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 **/ | |
19 | |
20 | |
21 var compression = 'jpeg95'; | |
22 | |
23 | |
24 | |
25 // Prevent the access to IE | |
26 if(navigator.appVersion.indexOf("MSIE ") != -1) | |
27 { | |
28 alert("Please use Mozilla Firefox or Google Chrome. Microsoft Internet Explorer is not supported."); | |
29 } | |
30 | |
31 | |
32 function ResizeCornerstone() | |
33 { | |
34 $('#dicomImage').height($(window).height() - $('#slider').parent().height()); | |
35 var element = $('#dicomImage').get(0); | |
36 cornerstone.resize(element, true); | |
37 } | |
38 | |
39 | |
40 function SetWindowing(center, width) | |
41 { | |
42 var element = $('#dicomImage').get(0); | |
43 var viewport = cornerstone.getViewport(element); | |
44 viewport.voi.windowCenter = center; | |
45 viewport.voi.windowWidth = width; | |
46 cornerstone.setViewport(element, viewport); | |
47 UpdateViewportInformation(); | |
48 } | |
49 | |
50 | |
51 function SetFullWindowing() | |
52 { | |
53 var element = $('#dicomImage').get(0); | |
54 var viewport = cornerstone.getViewport(element); | |
55 var image = cornerstone.getEnabledElement(element).image; | |
56 | |
57 if (image.color) { | |
58 // Ignore color images | |
59 return; | |
60 } | |
61 | |
62 var minValue = image.minPixelValue; | |
63 var maxValue = image.maxPixelValue; | |
64 if (minValue == undefined || | |
65 maxValue == undefined || | |
66 minValue == maxValue) { | |
67 return; | |
68 } | |
69 | |
70 if (image.slope != undefined && | |
71 image.intercept != undefined) { | |
72 minValue = minValue * image.slope + image.intercept; | |
73 maxValue = maxValue * image.slope + image.intercept; | |
74 } | |
75 | |
76 viewport.voi.windowCenter = (minValue + maxValue) / 2.0; | |
77 viewport.voi.windowWidth = (maxValue - minValue) / 2.0; | |
78 cornerstone.setViewport(element, viewport); | |
79 UpdateViewportInformation(); | |
80 } | |
81 | |
82 | |
83 function SetDefaultWindowing() | |
84 { | |
85 var element = $('#dicomImage').get(0); | |
86 var viewport = cornerstone.getViewport(element); | |
87 var image = cornerstone.getEnabledElement(element).image; | |
88 | |
89 viewport.voi.windowCenter = image.windowCenter; | |
90 viewport.voi.windowWidth = image.windowWidth; | |
91 cornerstone.setViewport(element, viewport); | |
92 UpdateViewportInformation(); | |
93 } | |
94 | |
95 | |
96 function SetBoneWindowing() | |
97 { | |
98 SetWindowing(300, 2000); | |
99 } | |
100 | |
101 | |
102 function SetLungWindowing() | |
103 { | |
104 SetWindowing(-600, 1600); | |
105 } | |
106 | |
107 | |
108 function UpdateViewportInformation() | |
109 { | |
110 var element = $('#dicomImage').get(0); | |
111 var viewport = cornerstone.getViewport(element); | |
112 | |
113 $('#bottomleft').text('WW/WL:' + Math.round(viewport.voi.windowWidth) + '/' + Math.round(viewport.voi.windowCenter)); | |
114 $('#bottomright').text('Zoom: ' + viewport.scale.toFixed(2) + 'x'); | |
115 } | |
116 | |
117 | |
118 function ToggleSeriesInformation() | |
119 { | |
120 $('#topright').toggle(); | |
121 } | |
122 | |
123 | |
124 function ToggleInterpolation() | |
125 { | |
126 var element = $('#dicomImage').get(0); | |
127 var viewport = cornerstone.getViewport(element); | |
128 if (viewport.pixelReplication === true) { | |
129 viewport.pixelReplication = false; | |
130 } else { | |
131 viewport.pixelReplication = true; | |
132 } | |
133 cornerstone.setViewport(element, viewport); | |
134 } | |
135 | |
136 | |
137 function ToggleInversion() | |
138 { | |
139 var element = $('#dicomImage').get(0); | |
140 var viewport = cornerstone.getViewport(element); | |
141 if (viewport.invert === true) { | |
142 viewport.invert = false; | |
143 } else { | |
144 viewport.invert = true; | |
145 } | |
146 cornerstone.setViewport(element, viewport); | |
147 } | |
148 | |
149 | |
150 function DownloadInstance(instance) | |
151 { | |
152 // http://stackoverflow.com/a/3749395/881731 | |
153 var hiddenIFrameID = 'hiddenDownloader', | |
154 iframe = document.getElementById(hiddenIFrameID); | |
155 if (iframe === null) { | |
156 iframe = document.createElement('iframe'); | |
157 iframe.id = hiddenIFrameID; | |
158 iframe.style.display = 'none'; | |
159 document.body.appendChild(iframe); | |
160 } | |
161 iframe.src = '../../instances/' + instance + '/file'; | |
162 } | |
163 | |
164 | |
165 function AdjustZoom() | |
166 { | |
167 var element = $('#dicomImage').get(0); | |
168 cornerstone.fitToWindow(element); | |
169 } | |
170 | |
171 | |
172 function ZoomIn() | |
173 { | |
174 var element = $('#dicomImage').get(0); | |
175 var viewport = cornerstone.getViewport(element); | |
176 viewport.scale /= 0.5; | |
177 cornerstone.setViewport(element, viewport); | |
178 UpdateViewportInformation(); | |
179 } | |
180 | |
181 | |
182 function ZoomOut() | |
183 { | |
184 var element = $('#dicomImage').get(0); | |
185 var viewport = cornerstone.getViewport(element); | |
186 viewport.scale *= 0.5; | |
187 cornerstone.setViewport(element, viewport); | |
188 UpdateViewportInformation(); | |
189 } | |
190 | |
191 | |
192 | |
193 (function (cornerstone) { | |
194 'use strict'; | |
195 | |
196 function PrintRange(pixels) | |
197 { | |
198 var a = Infinity; | |
199 var b = -Infinity; | |
200 | |
201 for (var i = 0, length = pixels.length; i < length; i++) { | |
202 if (pixels[i] < a) | |
203 a = pixels[i]; | |
204 if (pixels[i] > b) | |
205 b = pixels[i]; | |
206 } | |
207 | |
208 console.log(a + ' ' + b); | |
209 } | |
210 | |
211 function ChangeDynamics(pixels, source1, target1, source2, target2) | |
212 { | |
213 var scale = (target2 - target1) / (source2 - source1); | |
214 var offset = (target1) - scale * source1; | |
215 | |
216 for (var i = 0, length = pixels.length; i < length; i++) { | |
217 pixels[i] = scale * pixels[i] + offset; | |
218 } | |
219 } | |
220 | |
221 | |
222 function getPixelDataDeflate(image) { | |
223 // Decompresses the base64 buffer that was compressed with Deflate | |
224 var s = pako.inflate(window.atob(image.Orthanc.PixelData)); | |
225 var pixels = null; | |
226 | |
227 if (image.color) { | |
228 var buf = new ArrayBuffer(s.length / 3 * 4); // RGB32 | |
229 pixels = new Uint8Array(buf); | |
230 var index = 0; | |
231 for (var i = 0, length = s.length; i < length; i += 3) { | |
232 pixels[index++] = s[i]; | |
233 pixels[index++] = s[i + 1]; | |
234 pixels[index++] = s[i + 2]; | |
235 pixels[index++] = 255; // Alpha channel | |
236 } | |
237 } else { | |
238 var buf = new ArrayBuffer(s.length * 2); // int16_t | |
239 pixels = new Int16Array(buf); | |
240 var index = 0; | |
241 for (var i = 0, length = s.length; i < length; i += 2) { | |
242 var lower = s[i]; | |
243 var upper = s[i + 1]; | |
244 pixels[index] = lower + upper * 256; | |
245 index++; | |
246 } | |
247 } | |
248 | |
249 return pixels; | |
250 } | |
251 | |
252 | |
253 // http://stackoverflow.com/a/11058858/881731 | |
254 function str2ab(str) { | |
255 var buf = new ArrayBuffer(str.length); | |
256 var pixels = new Uint8Array(buf); | |
257 for (var i = 0, strLen=str.length; i<strLen; i++) { | |
258 pixels[i] = str.charCodeAt(i); | |
259 } | |
260 return pixels; | |
261 } | |
262 | |
263 function getPixelDataJpeg(image) { | |
264 var jpegReader = new JpegImage(); | |
265 var jpeg = str2ab(window.atob(image.Orthanc.PixelData)); | |
266 jpegReader.parse(jpeg); | |
267 var s = jpegReader.getData(image.width, image.height); | |
268 var pixels = null; | |
269 | |
270 if (image.color) { | |
271 var buf = new ArrayBuffer(s.length / 3 * 4); // RGB32 | |
272 pixels = new Uint8Array(buf); | |
273 var index = 0; | |
274 for (var i = 0, length = s.length; i < length; i += 3) { | |
275 pixels[index++] = s[i]; | |
276 pixels[index++] = s[i + 1]; | |
277 pixels[index++] = s[i + 2]; | |
278 pixels[index++] = 255; // Alpha channel | |
279 } | |
280 } else { | |
281 var buf = new ArrayBuffer(s.length * 2); // uint8_t | |
282 pixels = new Int16Array(buf); | |
283 var index = 0; | |
284 for (var i = 0, length = s.length; i < length; i++) { | |
285 pixels[index] = s[i]; | |
286 index++; | |
287 } | |
288 | |
289 if (image.Orthanc.Stretched) { | |
290 ChangeDynamics(pixels, 0, image.Orthanc.StretchLow, 255, image.Orthanc.StretchHigh); | |
291 } | |
292 } | |
293 | |
294 return pixels; | |
295 } | |
296 | |
297 | |
298 function getOrthancImage(imageId) { | |
299 var result = null; | |
300 | |
301 $.ajax({ | |
302 type: 'GET', | |
303 url: '../instances/' + compression + '-' + imageId, | |
304 dataType: 'json', | |
305 cache: true, | |
306 async: false, | |
307 success: function(image) { | |
308 image.imageId = imageId; | |
309 if (image.color) | |
310 image.render = cornerstone.renderColorImage; | |
311 else | |
312 image.render = cornerstone.renderGrayscaleImage; | |
313 | |
314 image.getPixelData = function() { | |
315 if (image.Orthanc.Compression == 'Deflate') | |
316 return getPixelDataDeflate(this); | |
317 | |
318 if (image.Orthanc.Compression == 'Jpeg') | |
319 return getPixelDataJpeg(this); | |
320 | |
321 // Unknown compression | |
322 return null; | |
323 } | |
324 | |
325 result = image; | |
326 }, | |
327 error: function() { | |
328 return null; | |
329 } | |
330 }); | |
331 | |
332 var deferred = $.Deferred(); | |
333 deferred.resolve(result); | |
334 return deferred; | |
335 } | |
336 | |
337 // register our imageLoader plugin with cornerstone | |
338 cornerstone.registerImageLoader('', getOrthancImage); | |
339 | |
340 }(cornerstone)); | |
341 | |
342 | |
343 $(document).ready(function() { | |
344 $('#open-toolbar').button({ | |
345 icons: { primary: 'ui-icon-custom-orthanc' }, | |
346 text: false | |
347 }); | |
348 | |
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parents:
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349 $('#unstable').tooltip(); |
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350 |
0 | 351 var series = window.url('?series', window.location.search); |
352 if (series == null) | |
353 return; | |
354 | |
355 console.log('Displaying series: ' + series); | |
356 var instances = [ ]; | |
357 | |
358 $.ajax({ | |
359 type: 'GET', | |
360 url: '../series/' + series, | |
361 dataType: 'json', | |
362 cache: false, | |
363 async: false, | |
364 success: function(volume) { | |
365 if (volume.SortedInstances.length != 0) { | |
366 instances = volume.SortedInstances; | |
367 $('#topright').html([ | |
368 $('<span>').text(volume.PatientID), | |
369 $('<br>'), | |
370 $('<span>').text(volume.PatientName), | |
371 $('<br>'), | |
372 $('<span>').text(volume.StudyDescription), | |
373 $('<br>'), | |
374 $('<span>').text(volume.SeriesDescription) | |
375 ]); | |
376 } | |
377 } | |
378 }); | |
379 | |
380 if (instances.length == 0) | |
381 { | |
382 console.log('No image in this series'); | |
383 return; | |
384 } | |
385 | |
386 | |
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387 $.ajax({ |
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388 type: 'GET', |
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389 url: '../../series/' + series, |
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390 dataType: 'json', |
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391 cache: false, |
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392 async: true, |
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parents:
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393 success: function(series) { |
3 | 394 if (!series.IsStable && |
395 series.Status != 'Complete') { | |
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396 $('#unstable').show(); |
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397 } |
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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398 } |
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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399 }); |
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
0
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400 |
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parents:
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401 |
0 | 402 var currentImageIndex = 0; |
403 | |
404 // updates the image display | |
405 function updateTheImage(imageIndex) { | |
406 return cornerstone.loadAndCacheImage(instances[imageIndex]).then(function(image) { | |
407 currentImageIndex = imageIndex; | |
408 var viewport = cornerstone.getViewport(element); | |
409 cornerstone.displayImage(element, image, viewport); | |
410 }); | |
411 } | |
412 | |
413 // image enable the element | |
414 var element = $('#dicomImage').get(0); | |
415 cornerstone.enable(element); | |
416 | |
417 // set event handlers | |
418 /*function onImageRendered(e, eventData) { | |
419 $('#topright').text('Render Time:' + eventData.renderTimeInMs + ' ms'); | |
420 } | |
421 $(element).on('CornerstoneImageRendered', onImageRendered);*/ | |
422 | |
423 // load and display the image | |
424 var imagePromise = updateTheImage(0); | |
425 | |
426 // add handlers for mouse events once the image is loaded. | |
427 imagePromise.then(function() { | |
428 viewport = cornerstone.getViewport(element); | |
429 UpdateViewportInformation(); | |
430 | |
431 // add event handlers to pan image on mouse move | |
432 $('#dicomImage').mousedown(function (e) { | |
433 var lastX = e.pageX; | |
434 var lastY = e.pageY; | |
435 var mouseButton = e.which; | |
436 | |
437 $(toolbar).hide(); | |
438 | |
439 $(document).mousemove(function (e) { | |
440 var deltaX = e.pageX - lastX, | |
441 deltaY = e.pageY - lastY; | |
442 lastX = e.pageX; | |
443 lastY = e.pageY; | |
444 | |
445 if (mouseButton == 1) { | |
446 var viewport = cornerstone.getViewport(element); | |
447 viewport.voi.windowWidth += (deltaX / viewport.scale); | |
448 viewport.voi.windowCenter += (deltaY / viewport.scale); | |
449 cornerstone.setViewport(element, viewport); | |
450 UpdateViewportInformation(); | |
451 } | |
452 else if (mouseButton == 2) { | |
453 var viewport = cornerstone.getViewport(element); | |
454 viewport.translation.x += (deltaX / viewport.scale); | |
455 viewport.translation.y += (deltaY / viewport.scale); | |
456 cornerstone.setViewport(element, viewport); | |
457 } | |
458 else if (mouseButton == 3) { | |
459 var viewport = cornerstone.getViewport(element); | |
460 viewport.scale += (deltaY / 100); | |
461 cornerstone.setViewport(element, viewport); | |
462 UpdateViewportInformation(); | |
463 } | |
464 }); | |
465 | |
466 $(document).mouseup(function (e) { | |
467 $(document).unbind('mousemove'); | |
468 $(document).unbind('mouseup'); | |
469 }); | |
470 }); | |
471 | |
472 $('#dicomImage').on('mousewheel DOMMouseScroll', function (e) { | |
473 // Firefox e.originalEvent.detail > 0 scroll back, < 0 scroll forward | |
474 // chrome/safari e.originalEvent.wheelDelta < 0 scroll back, > 0 scroll forward | |
475 if (e.originalEvent.wheelDelta < 0 || e.originalEvent.detail > 0) { | |
476 currentImageIndex ++; | |
477 if (currentImageIndex >= instances.length) { | |
478 currentImageIndex = instances.length - 1; | |
479 } | |
480 } else { | |
481 currentImageIndex --; | |
482 if (currentImageIndex < 0) { | |
483 currentImageIndex = 0; | |
484 } | |
485 } | |
486 | |
487 updateTheImage(currentImageIndex); | |
488 $('#slider').slider("option", "value", currentImageIndex); | |
489 | |
490 //prevent page fom scrolling | |
491 return false; | |
492 }); | |
493 }); | |
494 | |
495 | |
496 $('#slider').slider({ | |
497 min: 0, | |
498 max: instances.length - 1, | |
499 slide: function(event, ui) { | |
500 updateTheImage(ui.value); | |
501 } | |
502 }); | |
503 | |
504 var toolbar = $.jsPanel({ | |
505 position: { top: 50, left: 10 }, | |
506 size: { width: 155, height: 200 }, | |
507 content: $('#toolbar-content').clone().show(), | |
508 controls: { buttons: 'none' }, | |
509 title: '<a target="_blank" href="http://www.orthanc-server.com/"><img src="images/orthanc-logo.png" /></a>' | |
510 }); | |
511 | |
512 $('#open-toolbar').click(function() { | |
513 toolbar.toggle(); | |
514 }); | |
515 | |
516 $(toolbar).hide(); | |
517 | |
518 $('.toolbar-view', toolbar).buttonset() | |
519 .children().first().button({ | |
520 icons: { primary: 'ui-icon-info' }, | |
521 text: false | |
522 }).click(ToggleSeriesInformation).next().button({ | |
523 icons: { primary: 'ui-icon-custom-inversion' }, | |
524 text: false | |
525 }).click(ToggleInversion).next().button({ | |
526 icons: { primary: 'ui-icon-custom-interpolation' }, | |
527 text: false | |
528 }).click(ToggleInterpolation).next().button({ | |
529 icons: { primary: 'ui-icon-circle-triangle-s' }, | |
530 text: false | |
531 }).click(function() { | |
532 DownloadInstance(instances[currentImageIndex]); | |
533 }); | |
534 | |
535 $('.toolbar-zoom', toolbar).buttonset() | |
536 .children().first().button({ | |
537 icons: { primary: 'ui-icon-image' }, | |
538 text: false | |
539 }).click(AdjustZoom).next().button({ | |
540 icons: { primary: 'ui-icon-zoomin' }, | |
541 text: false | |
542 }).click(ZoomIn).next().button({ | |
543 icons: { primary: 'ui-icon-zoomout' }, | |
544 text: false | |
545 }).click(ZoomOut); | |
546 | |
547 $('.toolbar-windowing', toolbar).buttonset() | |
548 .children().first().button({ | |
549 icons: { primary: 'ui-icon-custom-default' }, | |
550 text: false | |
551 }).click(SetDefaultWindowing).next().button({ | |
552 icons: { primary: 'ui-icon-custom-stretch' }, | |
553 text: false | |
554 }).click(SetFullWindowing).next().button({ | |
555 icons: { primary: 'ui-icon-custom-lung' }, | |
556 text: false | |
557 }).click(SetLungWindowing).next().button({ | |
558 icons: { primary: 'ui-icon-custom-bone' }, | |
559 text: false | |
560 }).click(SetBoneWindowing); | |
561 | |
562 | |
563 function SetCompression(c) | |
564 { | |
565 compression = c; | |
566 cornerstone.imageCache.purgeCache(); | |
567 updateTheImage(currentImageIndex); | |
568 cornerstone.invalidateImageId(instances[currentImageIndex]); | |
569 } | |
570 | |
571 $('.toolbar-quality', toolbar).buttonset() | |
572 .children().first().button({ | |
573 label: 'L' | |
574 }).click(function() { | |
575 SetCompression('jpeg80'); | |
576 }).next().button({ | |
577 label: 'M' | |
578 }).click(function() { | |
579 SetCompression('jpeg95'); | |
580 }).next().button({ | |
581 label: 'H' | |
582 }).click(function() { | |
583 SetCompression('deflate'); | |
584 }); | |
585 | |
586 | |
587 ResizeCornerstone(); | |
588 $(window).resize(function(e) { | |
589 if (!$(e.target).hasClass('jsPanel')) // Ignore toolbar resizing | |
590 { | |
591 ResizeCornerstone(); | |
592 } | |
593 }); | |
594 | |
595 }); |