Mercurial > hg > orthanc-webviewer
annotate WebApplication/viewer.js @ 159:5dc54316d68b
shared copyright with osimis
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 04 Jan 2017 16:41:43 +0100 |
parents | f99adade8b77 |
children | b0910ae2ace5 |
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 |
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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 }); |