Mercurial > hg > digilib-old
annotate client/digitallibrary/jquery/jquery.digilib.js @ 705:e1995c540667 jquery
drag zoomed image
author | hertzhaft |
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date | Fri, 28 Jan 2011 16:14:32 +0100 |
parents | 0d49c33646da |
children | f345b9657f5c |
rev | line source |
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604 | 1 /* |
2 * digilib jQuery plugin | |
3 * | |
4 */ | |
655 | 5 |
636 | 6 // fallback for console.log calls |
7 if (typeof(console) === 'undefined') { | |
8 var console = { | |
692 | 9 log : function(){}, |
10 debug : function(){}, | |
11 error : function(){} | |
12 }; | |
13 var customConsole = true; | |
14 }; | |
604 | 15 |
16 (function($) { | |
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17 var buttons = { |
610 | 18 reference : { |
689 | 19 onclick : "reference", |
610 | 20 tooltip : "get a reference URL", |
21 img : "reference.png" | |
22 }, | |
23 zoomin : { | |
643 | 24 onclick : ["zoomBy", 1.4], |
610 | 25 tooltip : "zoom in", |
26 img : "zoom-in.png" | |
27 }, | |
28 zoomout : { | |
643 | 29 onclick : ["zoomBy", 0.7], |
610 | 30 tooltip : "zoom out", |
31 img : "zoom-out.png" | |
32 }, | |
33 zoomarea : { | |
654 | 34 onclick : "zoomArea", |
610 | 35 tooltip : "zoom area", |
36 img : "zoom-area.png" | |
37 }, | |
38 zoomfull : { | |
650 | 39 onclick : "zoomFull", |
610 | 40 tooltip : "view the whole image", |
41 img : "zoom-full.png" | |
42 }, | |
43 pagewidth : { | |
650 | 44 onclick : ["zoomFull", "width"], |
610 | 45 tooltip : "page width", |
46 img : "pagewidth.png" | |
47 }, | |
48 back : { | |
623 | 49 onclick : ["gotoPage", "-1"], |
610 | 50 tooltip : "goto previous image", |
51 img : "back.png" | |
52 }, | |
53 fwd : { | |
623 | 54 onclick : ["gotoPage", "+1"], |
610 | 55 tooltip : "goto next image", |
56 img : "fwd.png" | |
57 }, | |
58 page : { | |
59 onclick : "javascript:gotoPageWin()", | |
60 tooltip : "specify image", | |
61 img : "page.png" | |
62 }, | |
63 bird : { | |
635 | 64 onclick : "showBirdDiv", |
610 | 65 tooltip : "show bird's eye view", |
66 img : "birds-eye.png" | |
67 }, | |
68 help : { | |
635 | 69 onclick : "showAboutDiv", |
610 | 70 tooltip : "about Digilib", |
71 img : "help.png" | |
72 }, | |
73 reset : { | |
688 | 74 onclick : "reset", |
610 | 75 tooltip : "reset image", |
76 img : "reset.png" | |
77 }, | |
78 mark : { | |
647 | 79 onclick : "setMark", |
610 | 80 tooltip : "set a mark", |
81 img : "mark.png" | |
82 }, | |
83 delmark : { | |
650 | 84 onclick : "removeMark", |
610 | 85 tooltip : "delete the last mark", |
86 img : "delmark.png" | |
87 }, | |
88 hmir : { | |
661 | 89 onclick : ["mirror", "h"], |
610 | 90 tooltip : "mirror horizontally", |
91 img : "mirror-horizontal.png" | |
92 }, | |
93 vmir : { | |
661 | 94 onclick : ["mirror", "v"], |
610 | 95 tooltip : "mirror vertically", |
96 img : "mirror-vertical.png" | |
97 }, | |
98 rot : { | |
663 | 99 onclick : "rotate", |
610 | 100 tooltip : "rotate image", |
101 img : "rotate.png" | |
102 }, | |
103 brgt : { | |
663 | 104 onclick : "brightness", |
610 | 105 tooltip : "set brightness", |
106 img : "brightness.png" | |
107 }, | |
108 cont : { | |
663 | 109 onclick : "contrast", |
610 | 110 tooltip : "set contrast", |
111 img : "contrast.png" | |
112 }, | |
113 rgb : { | |
114 onclick : "javascript:setParamWin('rgb', '...')", | |
115 tooltip : "set rgb values", | |
116 img : "rgb.png" | |
117 }, | |
118 quality : { | |
703 | 119 onclick : "setquality", |
610 | 120 tooltip : "set image quality", |
121 img : "quality.png" | |
122 }, | |
123 size : { | |
124 onclick : "javascript:toggleSizeMenu()", | |
125 tooltip : "set page size", | |
126 img : "size.png" | |
127 }, | |
128 calibrationx : { | |
129 onclick : "javascript:calibrate('x')", | |
130 tooltip : "calibrate screen x-ratio", | |
131 img : "calibration-x.png" | |
132 }, | |
133 scale : { | |
134 onclick : "javascript:toggleScaleMenu()", | |
135 tooltip : "change image scale", | |
136 img : "original-size.png" | |
137 }, | |
699 | 138 toggleoptions : { |
139 onclick : "morebuttons", | |
140 tooltip : "more options", | |
141 img : "options.png" | |
142 }, | |
690 | 143 moreoptions : { |
144 onclick : ["morebuttons", "+1"], | |
145 tooltip : "more options", | |
146 img : "options.png" | |
147 }, | |
148 lessoptions : { | |
149 onclick : ["morebuttons", "-1"], | |
150 tooltip : "less options", | |
610 | 151 img : "options.png" |
152 }, | |
153 SEP : { | |
154 img : "sep.png" | |
155 } | |
156 }; | |
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157 |
605 | 158 var defaults = { |
616 | 159 // version of this script |
635 | 160 'version' : 'jquery.digilib.js 0.9', |
616 | 161 // logo url |
162 'logoUrl' : '../img/digilib-logo-text1.png', | |
635 | 163 // homepage url (behind logo) |
164 'homeUrl' : 'http://digilib.berlios.de', | |
610 | 165 // base URL to Scaler servlet |
652 | 166 'scalerBaseUrl' : null, |
610 | 167 // list of Scaler parameters |
627 | 168 'scalerParamNames' : ['fn','pn','dw','dh','ww','wh','wx','wy','ws','mo', |
169 'rot','cont','brgt','rgbm','rgba','ddpi','ddpix','ddpiy'], | |
170 // Scaler parameter defaults | |
643 | 171 'pn' : 1, |
627 | 172 'ww' : 1.0, |
173 'wh' : 1.0, | |
174 'wx' : 0.0, | |
175 'wy' : 0.0, | |
176 'ws' : 1.0, | |
643 | 177 'mo' : '', |
178 'rot' : 0, | |
179 'cont' : 0, | |
180 'brgt' : 0, | |
181 'rgbm' : '0/0/0', | |
182 'rgba' : '0/0/0', | |
183 'ddpi' : null, | |
184 'ddpix' : null, | |
185 'ddpiy' : null, | |
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186 // list of digilib parameters |
650 | 187 'digilibParamNames' : ['fn','pn','ww','wh','wx','wy','ws','mo','rot','cont','brgt','rgbm','rgba','mk','clop'], |
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188 // digilib parameter defaults |
643 | 189 'mk' : '', |
650 | 190 'clop' : '', |
643 | 191 // mode of operation: |
192 // fullscreen = take parameters from page URL, keep state in page URL | |
193 // embedded = take parameters from Javascript options, keep state inside object | |
610 | 194 'interactionMode' : 'fullscreen', |
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195 // buttons |
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196 'buttons' : buttons, |
668 | 197 // defaults for digilib buttons |
665 | 198 'buttonSettings' : { |
199 'fullscreen' : { | |
668 | 200 // path to button images (must end with a slash) |
665 | 201 'imagePath' : 'img/fullscreen/', |
699 | 202 'standardSet' : ["reference","zoomin","zoomout","zoomarea","zoomfull","pagewidth","back","fwd","page","bird","SEP","help","reset","toggleoptions"], |
203 'specialSet' : ["mark","delmark","hmir","vmir","rot","brgt","cont","rgb","quality","size","calibrationx","scale","SEP","toggleoptions"], | |
682 | 204 'buttonSets' : ['standardSet', 'specialSet'] |
665 | 205 }, |
206 'embedded' : { | |
207 'imagePath' : 'img/embedded/16/', | |
699 | 208 'standardSet' : ["reference","zoomin","zoomout","zoomarea","zoomfull","back","fwd","page","bird","SEP","help","reset","toggleoptions"], |
209 'specialSet' : ["hmir","vmir","rot","brgt","cont","rgb","quality","size","SEP","toggleoptions"], | |
682 | 210 'buttonSets' : ['standardSet', 'specialSet'] |
665 | 211 } |
697 | 212 }, |
213 // number of visible button groups | |
214 'visibleButtonSets' : 1, | |
616 | 215 // is birdView shown? |
216 'isBirdDivVisible' : false, | |
668 | 217 // dimensions of bird's eye div |
674 | 218 'birdDivWidth' : 200, |
219 'birdDivHeight' : 200, | |
668 | 220 // style of the zoom area indicator in the bird's eye div |
659 | 221 'birdIndicatorStyle' : {'border' : '2px solid #ff0000' }, |
668 | 222 // style of zoom area "rubber band" |
223 'zoomrectStyle' : {'border' : '2px solid #ff0000' }, | |
616 | 224 // is the "about" window shown? |
225 'isAboutDivVisible' : false | |
226 | |
610 | 227 }; |
655 | 228 |
608 | 229 // affine geometry classes |
230 var geom = dlGeometry(); | |
655 | 231 |
643 | 232 var MAX_ZOOMAREA = geom.rectangle(0, 0, 1, 1); |
655 | 233 |
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234 var actions = { |
668 | 235 // init: digilib initialization |
236 init : function(options) { | |
237 // settings for this digilib instance are merged from defaults and options | |
238 var settings = $.extend({}, defaults, options); | |
239 var isFullscreen = settings.interactionMode === 'fullscreen'; | |
240 var queryParams = {}; | |
241 if (isFullscreen) { | |
242 queryParams = parseQueryParams(); | |
243 // check scalerBaseUrl | |
244 if (settings.scalerBaseUrl == null) { | |
245 // try the host this came from | |
246 var h = window.location.host; | |
247 if (window.location.host) { | |
248 var url = window.location.href; | |
249 // assume the page lives in [webapp]/jquery/ | |
250 var pos = url.indexOf('jquery/'); | |
251 if (pos > 0) { | |
252 settings.scalerBaseUrl = url.substring(0, pos) + 'servlet/Scaler'; | |
652 | 253 } |
254 } | |
636 | 255 } |
668 | 256 } |
257 return this.each(function() { | |
258 var $elem = $(this); | |
259 var data = $elem.data('digilib'); | |
688 | 260 var params, elemSettings; |
668 | 261 // if the plugin hasn't been initialized yet |
262 if (!data) { | |
263 // merge query parameters | |
264 if (isFullscreen) { | |
688 | 265 params = queryParams; |
668 | 266 } else { |
688 | 267 params = parseImgParams($elem); |
268 }; | |
668 | 269 // store $(this) element in the settings |
688 | 270 elemSettings = $.extend({}, settings, params); |
697 | 271 data = { |
668 | 272 $elem : $elem, |
273 settings : elemSettings, | |
688 | 274 queryParams : params |
668 | 275 }; |
276 // store in data element | |
277 $elem.data('digilib', data); | |
278 } | |
279 unpackParams(data); | |
682 | 280 // create HTML structure for scaler |
668 | 281 setupScalerDiv(data); |
697 | 282 // add buttons |
283 for (var i = 0; i < elemSettings.visibleButtonSets; ++i) { | |
284 showButtons(data, true, i); | |
285 } | |
668 | 286 // bird's eye view creation |
287 if (elemSettings.isBirdDivVisible) { | |
638 | 288 setupBirdDiv(data); |
289 } | |
668 | 290 // about window creation - TODO: could be deferred? restrict to only one item? |
291 setupAboutDiv(data); | |
292 }); | |
293 }, | |
294 | |
295 // destroy: clean up digilib | |
296 destroy : function(data) { | |
297 return this.each(function(){ | |
298 var $elem = $(this); | |
299 $(window).unbind('.digilib'); // unbind all digilibs(?) | |
300 data.digilib.remove(); | |
301 $elem.removeData('digilib'); | |
302 }); | |
303 }, | |
304 | |
305 // show or hide the 'about' window | |
306 showAboutDiv : function(data, show) { | |
307 data.settings.isAboutDivVisible = showDiv(data.settings.isAboutDivVisible, data.$aboutDiv, show); | |
308 }, | |
655 | 309 |
668 | 310 // event handler: toggles the visibility of the bird's eye window |
311 showBirdDiv : function (data, show) { | |
312 if (data.$birdDiv == null) { | |
313 // no bird div -> create | |
314 setupBirdDiv(data); | |
315 } | |
316 data.settings.isBirdDivVisible = showDiv(data.settings.isBirdDivVisible, data.$birdDiv, show); | |
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317 data.$birdImg.triggerHandler('load'); |
668 | 318 }, |
319 | |
320 // goto given page nr (+/-: relative) | |
321 gotoPage : function (data, pageNr) { | |
322 var settings = data.settings; | |
323 var oldpn = settings.pn; | |
324 var pn = setNumValue(settings, "pn", pageNr); | |
325 if (pn == null) return false; // nothing happened | |
326 if (pn < 1) { | |
327 alert("no such page (page number too low)"); | |
328 settings.pn = oldpn; | |
329 return false; | |
330 } | |
331 if (settings.pt) { | |
332 if (pn > settings.pt) { | |
333 alert("no such page (page number too high)"); | |
623 | 334 settings.pn = oldpn; |
335 return false; | |
634 | 336 } |
668 | 337 } |
338 // reset mk and others(?) | |
339 data.marks = []; | |
340 data.zoomArea = MAX_ZOOMAREA; | |
341 // then reload | |
342 redisplay(data); | |
343 }, | |
654 | 344 |
668 | 345 // zoom by a given factor |
346 zoomBy : function (data, factor) { | |
347 zoomBy(data, factor); | |
348 }, | |
647 | 349 |
668 | 350 // zoom interactively |
351 zoomArea : function (data) { | |
352 zoomArea(data); | |
353 }, | |
650 | 354 |
668 | 355 // zoom out to full page |
356 zoomFull : function (data, mode) { | |
357 data.zoomArea = MAX_ZOOMAREA; | |
358 if (mode === 'width') { | |
359 data.dlOpts.fitwidth = 1; | |
360 delete data.dlOpts.fitheight; | |
361 } else if (mode === 'height') { | |
362 data.dlOpts.fitheight = 1; | |
363 delete data.dlOpts.fitwidth; | |
364 } else { | |
365 delete data.dlOpts.fitwidth; | |
366 delete data.dlOpts.fitheight; | |
367 } | |
368 redisplay(data); | |
369 }, | |
370 | |
371 // set a mark by clicking (or giving a position) | |
372 setMark : function (data, mpos) { | |
373 if (mpos == null) { | |
374 // interactive | |
375 setMark(data); | |
376 } else { | |
377 // use position | |
378 data.marks.push(pos); | |
663 | 379 redisplay(data); |
604 | 380 } |
668 | 381 }, |
382 | |
383 // remove the last mark | |
384 removeMark : function (data) { | |
385 data.marks.pop(); | |
386 redisplay(data); | |
387 }, | |
388 | |
389 // mirror the image | |
390 mirror : function (data, mode) { | |
391 var flags = data.scalerFlags; | |
392 if (mode === 'h') { | |
393 if (flags.hmir) { | |
394 delete flags.hmir; | |
395 } else { | |
396 flags.hmir = 1; | |
397 } | |
398 } else { | |
399 if (flags.vmir) { | |
400 delete flags.vmir; | |
401 } else { | |
402 flags.vmir = 1; | |
403 } | |
404 } | |
405 redisplay(data); | |
406 }, | |
650 | 407 |
668 | 408 // rotate the image |
409 rotate : function (data, angle) { | |
410 var rot = data.settings.rot; | |
411 if (angle == null) { | |
412 angle = window.prompt("Rotation angle:", rot); | |
413 } | |
414 data.settings.rot = angle; | |
415 redisplay(data); | |
416 }, | |
417 | |
418 // change brightness | |
419 brightness : function (data, factor) { | |
420 var brgt = data.settings.brgt; | |
421 if (factor == null) { | |
422 factor = window.prompt("Brightness (-255..255)", brgt); | |
423 } | |
424 data.settings.brgt = factor; | |
425 redisplay(data); | |
426 }, | |
427 | |
428 // change contrast | |
429 contrast : function (data, factor) { | |
430 var cont = data.settings.cont; | |
431 if (factor == null) { | |
432 factor = window.prompt("Contrast (-8, 8)", cont); | |
433 } | |
434 data.settings.cont = factor; | |
435 redisplay(data); | |
688 | 436 }, |
690 | 437 |
438 // display more (or less) button sets | |
439 morebuttons : function (data, more) { | |
696 | 440 var settings = data.settings; |
699 | 441 if (more == null) { |
703 | 442 // toggle more or less (only works for 2 sets) |
699 | 443 var maxbtns = settings.buttonSettings[settings.interactionMode].buttonSets.length; |
444 if (settings.visibleButtonSets >= maxbtns) { | |
445 more = '-1'; | |
446 } else { | |
447 more = '+1'; | |
448 } | |
449 } | |
690 | 450 if (more === '-1') { |
451 // remove set | |
697 | 452 var setIdx = settings.visibleButtonSets - 1; |
453 if (showButtons(data, false, setIdx, true)) { | |
454 settings.visibleButtonSets--; | |
455 } | |
690 | 456 } else { |
457 // add set | |
697 | 458 var setIdx = settings.visibleButtonSets; |
459 if (showButtons(data, true, setIdx, true)) { | |
460 settings.visibleButtonSets++; | |
690 | 461 } |
462 } | |
691 | 463 }, |
688 | 464 |
703 | 465 // reset image parameters to defaults |
688 | 466 reset : function (data) { |
467 var settings = data.settings; | |
468 var paramNames = settings.digilibParamNames; | |
469 var params = data.queryParams; | |
470 resetData(data); | |
471 // delete all digilib parameters | |
472 for (var i = 0; i < paramNames.length; i++) { | |
473 var paramName = paramNames[i]; | |
474 delete settings[paramName]; | |
475 }; | |
476 // fullscreen: restore only fn/pn parameters | |
477 if (settings.interactionMode === 'fullscreen') { | |
478 settings['fn'] = params.fn; | |
479 settings['pn'] = params.pn; | |
480 // embedded: restore original parameters | |
481 } else { | |
482 $.extend(settings, params); | |
483 }; | |
484 redisplay(data); | |
689 | 485 }, |
486 | |
703 | 487 // presents a reference url (returns value if noprompt) |
488 reference : function (data, noprompt) { | |
689 | 489 var settings = data.settings; |
490 var url; | |
491 if (settings.interactionMode === 'fullscreen') { | |
492 url = getDigilibUrl(data); | |
493 } else { | |
494 url = getScalerUrl(data); | |
495 }; | |
703 | 496 if (noprompt == null) { |
497 window.prompt("URL reference to the current view", url); | |
498 } | |
499 return url; | |
500 }, | |
501 | |
502 // set image quality | |
503 setquality : function (data, qual) { | |
504 var oldq = getQuality(data); | |
505 if (qual == null) { | |
506 qual = window.prompt("Image quality (0..2)", oldq); | |
507 } | |
508 qual = parseInt(qual, 10); | |
509 if (qual >= 0 && qual <= 2) { | |
510 setQuality(data, qual); | |
511 redisplay(data); | |
512 } | |
668 | 513 } |
605 | 514 }; |
604 | 515 |
608 | 516 // returns parameters from page url |
607 | 517 var parseQueryParams = function() { |
636 | 518 return parseQueryString(window.location.search.slice(1)); |
519 }; | |
655 | 520 |
636 | 521 // returns parameters from embedded img-element |
607 | 522 var parseImgParams = function($elem) { |
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523 var src = $elem.find('img').first().attr('src'); |
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524 if (!src) { |
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525 return null; |
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526 } |
607 | 527 var pos = src.indexOf('?'); |
528 var query = (pos < 0) ? '' : src.substring(pos + 1); | |
529 var scalerUrl = src.substring(0, pos); | |
627 | 530 var params = parseQueryString(query); |
531 params.scalerBaseUrl = scalerUrl; | |
532 return params; | |
636 | 533 }; |
607 | 534 |
608 | 535 // parses query parameter string into parameter object |
607 | 536 var parseQueryString = function(query) { |
701 | 537 var params = {}; |
538 if (query == null) return params; | |
607 | 539 var pairs = query.split("&"); |
636 | 540 //var keys = []; |
607 | 541 for (var i = 0; i < pairs.length; i++) { |
542 var pair = pairs[i].split("="); | |
543 if (pair.length === 2) { | |
627 | 544 params[pair[0]] = pair[1]; |
636 | 545 //keys.push(pair[0]); |
634 | 546 } |
636 | 547 } |
627 | 548 return params; |
636 | 549 }; |
668 | 550 |
643 | 551 // returns a query string from key names from a parameter hash (ignoring if the same value is in defaults) |
552 var getParamString = function (settings, keys, defaults) { | |
615 | 553 var paramString = ''; |
650 | 554 var nx = false; |
615 | 555 for (i = 0; i < keys.length; ++i) { |
556 var key = keys[i]; | |
663 | 557 if ((settings[key] != null) && ((defaults == null) || (settings[key] != defaults[key]))) { |
615 | 558 // first param gets no '&' |
650 | 559 if (nx) { |
560 paramString += '&'; | |
561 } else { | |
562 nx = true; | |
563 } | |
615 | 564 // add parm=val |
565 paramString += key + '=' + settings[key]; | |
643 | 566 } |
615 | 567 } |
568 return paramString; | |
631 | 569 }; |
570 | |
636 | 571 // returns URL and query string for Scaler |
572 var getScalerUrl = function (data) { | |
653 | 573 var settings = data.settings; |
652 | 574 if (settings.scalerBaseUrl == null) { |
575 alert("ERROR: URL of digilib Scaler servlet missing!"); | |
576 } | |
665 | 577 packParams(data); |
636 | 578 var keys = settings.scalerParamNames; |
643 | 579 var queryString = getParamString(settings, keys, defaults); |
636 | 580 var url = settings.scalerBaseUrl + '?' + queryString; |
581 return url; | |
582 }; | |
583 | |
584 // returns URL and query string for current digilib | |
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585 var getDigilibUrl = function (data) { |
643 | 586 packParams(data); |
636 | 587 var settings = data.settings; |
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588 var queryString = getParamString(settings, settings.digilibParamNames, defaults); |
636 | 589 var url = window.location.toString(); |
590 var pos = url.indexOf('?'); | |
591 var baseUrl = url.substring(0, pos); | |
592 var newurl = baseUrl + '?' + queryString; | |
593 return newurl; | |
594 }; | |
595 | |
655 | 596 // processes some parameters into objects and stuff |
631 | 597 var unpackParams = function (data) { |
598 var settings = data.settings; | |
636 | 599 // zoom area |
631 | 600 var zoomArea = geom.rectangle(settings.wx, settings.wy, settings.ww, settings.wh); |
643 | 601 data.zoomArea = zoomArea; |
636 | 602 // marks |
631 | 603 var marks = []; |
650 | 604 if (settings.mk) { |
605 var mk = settings.mk; | |
606 if (mk.indexOf(";") >= 0) { | |
607 var pa = mk.split(";"); // old format with ";" | |
608 } else { | |
609 var pa = mk.split(","); // new format | |
610 } | |
611 for (var i = 0; i < pa.length ; i++) { | |
612 var pos = pa[i].split("/"); | |
613 if (pos.length > 1) { | |
614 marks.push(geom.position(pos[0], pos[1])); | |
615 } | |
633 | 616 } |
631 | 617 } |
643 | 618 data.marks = marks; |
650 | 619 // mo (Scaler flags) |
620 var flags = {}; | |
621 if (settings.mo) { | |
622 var pa = settings.mo.split(","); | |
623 for (var i = 0; i < pa.length ; i++) { | |
624 flags[pa[i]] = pa[i]; | |
625 } | |
626 } | |
627 data.scalerFlags = flags; | |
628 // clop (digilib options) | |
629 var opts = {}; | |
701 | 630 if (jQuery.cookie) { |
631 // read from cookie | |
632 var ck = "digilib:fn:" + escape(settings.fn) + ":pn:" + settings.pn; | |
633 var cp = jQuery.cookie(ck); | |
634 console.debug("get cookie=", ck, " value=", cp); | |
635 // in query string format | |
636 opts = parseQueryString(cp); | |
637 } | |
638 /* read from parameter clop | |
639 * if (settings.clop) { | |
650 | 640 var pa = settings.clop.split(","); |
641 for (var i = 0; i < pa.length ; i++) { | |
642 opts[pa[i]] = pa[i]; | |
643 } | |
701 | 644 } */ |
650 | 645 data.dlOpts = opts; |
661 | 646 // birdview option |
701 | 647 if (opts.birdview != null) { |
648 settings.isBirdDivVisible = opts.birdview; | |
649 } | |
650 // visible button sets | |
651 if (opts.buttons != null) { | |
652 settings.visibleButtonSets = opts.buttons; | |
653 } | |
655 | 654 }; |
655 | |
631 | 656 // put objects back into parameters |
657 var packParams = function (data) { | |
658 var settings = data.settings; | |
636 | 659 // zoom area |
643 | 660 if (data.zoomArea) { |
647 | 661 settings.wx = cropFloat(data.zoomArea.x); |
662 settings.wy = cropFloat(data.zoomArea.y); | |
663 settings.ww = cropFloat(data.zoomArea.width); | |
664 settings.wh = cropFloat(data.zoomArea.height); | |
631 | 665 } |
636 | 666 // marks |
643 | 667 if (data.marks) { |
650 | 668 settings.mk = ''; |
643 | 669 for (var i = 0; i < data.marks.length; i++) { |
650 | 670 if (i) { |
671 settings.mk += ','; | |
672 } | |
673 settings.mk += cropFloat(data.marks[i].x).toString() + '/' + cropFloat(data.marks[i].y).toString(); | |
631 | 674 } |
650 | 675 } |
676 // Scaler flags | |
677 if (data.scalerFlags) { | |
678 var mo = ''; | |
679 for (var f in data.scalerFlags) { | |
680 if (mo) { | |
681 mo += ','; | |
682 } | |
683 mo += f; | |
684 } | |
685 settings.mo = mo; | |
686 } | |
701 | 687 // save digilib settings in options |
688 data.dlOpts.birdview = settings.isBirdDivVisible ? 1 : 0; | |
689 data.dlOpts.buttons = settings.visibleButtonSets; | |
688 | 690 |
701 | 691 // save digilib options in cookie |
650 | 692 if (data.dlOpts) { |
693 var clop = ''; | |
694 for (var o in data.dlOpts) { | |
695 if (clop) { | |
701 | 696 clop += '&'; |
697 } | |
698 clop += o + '=' + data.dlOpts[o]; | |
699 } | |
700 var ck = "digilib:fn:" + escape(settings.fn) + ":pn:" + settings.pn; | |
701 console.debug("set cookie=", ck, " value=", clop); | |
702 jQuery.cookie(ck, clop); | |
703 }; | |
704 /* store in parameter clop | |
705 * if (data.dlOpts) { | |
706 var clop = ''; | |
707 for (var o in data.dlOpts) { | |
708 if (clop) { | |
650 | 709 clop += ','; |
710 } | |
711 clop += o; | |
712 } | |
713 settings.clop = clop; | |
701 | 714 } */ |
631 | 715 }; |
655 | 716 |
688 | 717 // clear digilib data for reset |
718 var resetData = function (data) { | |
719 if (data.zoomArea) delete data.zoomArea; | |
720 if (data.marks) delete data.marks; | |
721 if (data.scalerFlags) delete data.scalerFlags; | |
722 if (data.dlOpts) delete data.dlOpts; | |
723 }; | |
724 | |
622 | 725 // (re)load the img from a new scaler URL |
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726 var redisplay = function (data) { |
636 | 727 var settings = data.settings; |
728 if (settings.interactionMode === 'fullscreen') { | |
729 // update location.href (browser URL) in fullscreen mode | |
644
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730 var url = getDigilibUrl(data); |
636 | 731 var history = window.history; |
732 if (typeof(history.pushState) === 'function') { | |
733 console.debug("we could modify history, but we don't..."); | |
734 } | |
735 window.location = url; | |
736 } else { | |
737 // embedded mode -- just change img src | |
738 var url = getScalerUrl(data); | |
739 data.$img.attr('src', url); | |
677
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740 // and update bird's eye view |
678
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741 //if (settings.isBirdDivVisible) { |
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742 // renderBirdZoom(data); |
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743 //} |
677
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744 }; |
622 | 745 }; |
746 | |
662 | 747 // returns maximum size for scaler img in fullscreen mode |
748 var getFullscreenImgSize = function($elem) { | |
749 var $win = $(window); | |
750 var winH = $win.height(); | |
751 var winW = $win.width(); | |
752 // TODO: account for borders? | |
753 return geom.size(winW, winH); | |
754 }; | |
755 | |
608 | 756 // creates HTML structure for digilib in elem |
627 | 757 var setupScalerDiv = function (data) { |
758 var settings = data.settings; | |
647 | 759 var $elem = data.$elem; |
686 | 760 var $img, scalerUrl; |
761 // fullscreen | |
608 | 762 if (settings.interactionMode === 'fullscreen') { |
609 | 763 var imgSize = getFullscreenImgSize($elem); |
650 | 764 // fitwidth/height omits destination height/width |
765 if (data.dlOpts['fitheight'] == null) { | |
766 settings.dw = imgSize.width; | |
686 | 767 }; |
650 | 768 if (data.dlOpts['fitwidth'] == null) { |
769 settings.dh = imgSize.height; | |
686 | 770 }; |
613
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771 $img = $('<img/>'); |
686 | 772 scalerUrl = getScalerUrl(data); |
773 // embedded mode -- try to keep img tag | |
609 | 774 } else { |
623 | 775 $img = $elem.find('img'); |
613
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776 if ($img.length > 0) { |
686 | 777 console.debug("img detach:", $img); |
778 scalerUrl = $img.attr('src'); | |
613
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779 $img.detach(); |
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780 } else { |
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781 $img = $('<img/>'); |
686 | 782 scalerUrl = getScalerUrl(data); |
783 }; | |
608 | 784 } |
613
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785 // create new html |
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786 $elem.empty(); // TODO: should we keep stuff for customization? |
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787 var $scaler = $('<div class="scaler"/>'); |
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788 $elem.append($scaler); |
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789 $scaler.append($img); |
622 | 790 $img.addClass('pic'); |
649 | 791 data.$scaler = $scaler; |
636 | 792 data.$img = $img; |
687 | 793 // setup image load handler before setting the src attribute (IE bug) |
794 $img.load(scalerImgLoadedHandler(data)); | |
795 $img.attr('src', scalerUrl); | |
608 | 796 }; |
615 | 797 |
610 | 798 // creates HTML structure for buttons in elem |
697 | 799 var createButtons = function (data, buttonSetIdx) { |
647 | 800 var $elem = data.$elem; |
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801 var settings = data.settings; |
665 | 802 var mode = settings.interactionMode; |
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803 var buttonSettings = settings.buttonSettings[mode]; |
682 | 804 var buttonGroup = buttonSettings.buttonSets[buttonSetIdx]; |
690 | 805 if (buttonGroup == null) { |
806 // no buttons here | |
807 return; | |
808 } | |
809 var $buttonsDiv = $('<div class="buttons"/>'); | |
682 | 810 var buttonNames = buttonSettings[buttonGroup]; |
811 for (var i = 0; i < buttonNames.length; i++) { | |
812 var buttonName = buttonNames[i]; | |
813 var buttonConfig = settings.buttons[buttonName]; | |
665 | 814 // construct the button html |
815 var $button = $('<div class="button"></div>'); | |
816 var $a = $('<a/>'); | |
817 var $img = $('<img class="button"/>'); | |
818 $buttonsDiv.append($button); | |
819 $button.append($a); | |
820 $a.append($img); | |
821 // add attributes and bindings | |
822 $button.attr('title', buttonConfig.tooltip); | |
682 | 823 $button.addClass('button-' + buttonName); |
665 | 824 // create handler for the buttons |
825 $a.bind('click.digilib', (function () { | |
826 // we create a new closure to capture the value of action | |
827 var action = buttonConfig.onclick; | |
828 if ($.isArray(action)) { | |
829 // the handler function calls digilib with action and parameters | |
830 return function (evt) { | |
831 console.debug('click action=', action, ' evt=', evt); | |
832 $elem.digilib.apply($elem, action); | |
833 return false; | |
834 }; | |
835 } else { | |
836 // the handler function calls digilib with action | |
837 return function (evt) { | |
838 console.debug('click action=', action, ' evt=', evt); | |
839 $elem.digilib(action); | |
840 return false; | |
841 }; | |
842 } | |
843 })()); | |
844 $img.attr('src', buttonSettings.imagePath + buttonConfig.img); | |
690 | 845 } |
662 | 846 // make buttons div scroll if too large for window |
847 if ($buttonsDiv.height() > $(window).height() - 10) { | |
848 $buttonsDiv.css('position', 'absolute'); | |
849 } | |
697 | 850 // buttons hidden at first |
851 $buttonsDiv.hide(); | |
852 $elem.append($buttonsDiv); | |
682 | 853 if (data.$buttonSets == null) { |
697 | 854 // first button set |
682 | 855 data.$buttonSets = [$buttonsDiv]; |
856 } else { | |
690 | 857 $elem.append($buttonsDiv); |
682 | 858 data.$buttonSets[buttonSetIdx] = $buttonsDiv; |
859 } | |
612 | 860 return $buttonsDiv; |
610 | 861 }; |
615 | 862 |
863 // creates HTML structure for the bird's eye view in elem | |
638 | 864 var setupBirdDiv = function (data) { |
647 | 865 var $elem = data.$elem; |
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866 var settings = data.settings; |
615 | 867 // use only the relevant parameters |
868 var keys = ['fn','pn','dw','dh']; | |
674 | 869 var birdDivOptions = { |
870 dw : settings.birdDivWidth, | |
871 dh : settings.birdDivHeight | |
872 }; | |
873 var birdSettings = $.extend({}, settings, birdDivOptions); | |
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874 var birdUrl = settings.scalerBaseUrl + '?' + getParamString(birdSettings, keys); |
615 | 875 // the bird's eye div |
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876 var $birdDiv = $('<div class="birdview" style="display:none"/>'); |
615 | 877 // the detail indicator frame |
678
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878 var $birdZoom = $('<div class="birdZoom" style="display:none; position:absolute; background-color:transparent;"/>'); |
615 | 879 // the small image |
880 var $birdImg = $('<img class="birdimg"/>'); | |
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881 $elem.append($birdDiv); |
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882 $birdDiv.append($birdZoom); |
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883 $birdDiv.append($birdImg); |
678
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884 $birdZoom.css(data.settings.birdIndicatorStyle); |
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885 data.$birdDiv = $birdDiv; |
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886 data.$birdZoom = $birdZoom; |
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887 data.$birdImg = $birdImg; |
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888 $birdImg.load(birdImgLoadedHandler(data)); |
615 | 889 $birdImg.attr('src', birdUrl); |
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890 if (data.settings.isBirdDivVisible) { |
687 | 891 $birdDiv.show(); |
678
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892 }; |
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893 birdZoom(data); |
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894 }; |
615 | 895 |
625 | 896 // creates HTML structure for the about view in elem |
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897 var setupAboutDiv = function (data) { |
647 | 898 var $elem = data.$elem; |
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899 var settings = data.settings; |
625 | 900 var $aboutDiv = $('<div class="about" style="display:none"/>'); |
616 | 901 var $header = $('<p>Digilib Graphic Viewer</p>'); |
902 var $link = $('<a/>'); | |
903 var $logo = $('<img class="logo" title="digilib"/>'); | |
904 var $content = $('<p/>'); | |
905 $elem.append($aboutDiv); | |
906 $aboutDiv.append($header); | |
907 $aboutDiv.append($link); | |
908 $aboutDiv.append($content); | |
909 $link.append($logo); | |
910 $logo.attr('src', settings.logoUrl); | |
635 | 911 $link.attr('href', settings.homeUrl); |
616 | 912 $content.text('Version: ' + settings.version); |
635 | 913 // click hides |
649 | 914 $aboutDiv.bind('click.digilib', function () { |
646 | 915 settings.isAboutDivVisible = showDiv(settings.isAboutDivVisible, $aboutDiv, 0); |
649 | 916 return false; |
917 }); | |
635 | 918 data.$aboutDiv = $aboutDiv; |
634 | 919 }; |
920 | |
635 | 921 // shows some window e.g. 'about' (toggle visibility if show is null) |
922 var showDiv = function (isVisible, $div, show) { | |
645 | 923 if (show == null) { |
635 | 924 // toggle visibility |
925 isVisible = !isVisible; | |
926 } else { | |
927 // set visibility | |
928 isVisible = show; | |
929 } | |
930 if (isVisible) { | |
931 $div.fadeIn(); | |
932 } else { | |
933 $div.fadeOut(); | |
934 } | |
935 return isVisible; | |
634 | 936 }; |
616 | 937 |
697 | 938 // display more (or less) button sets |
939 var showButtons = function (data, more, setIdx, animated) { | |
940 if (more) { | |
941 // add set | |
942 var $otherSets = data.$elem.find('div.buttons:visible'); | |
943 var $set; | |
944 if (data.$buttonSets && data.$buttonSets[setIdx]) { | |
945 // set exists | |
946 $set = data.$buttonSets[setIdx]; | |
947 } else { | |
948 $set = createButtons(data, setIdx); | |
949 } | |
950 if ($set == null) return false; | |
951 var btnWidth = $set.width(); | |
952 // move remaining sets left and show new set | |
953 if (animated) { | |
954 $otherSets.animate({left : '-='+btnWidth+'px'}, 'fast', | |
955 function () {$set.show();}); | |
956 } else { | |
701 | 957 var oldpos = $otherSets.position(); |
958 if (oldpos) { | |
959 $otherSets.css({left : oldpos.left-btnWidth+'px'}); | |
960 } | |
697 | 961 $set.show(); |
962 } | |
963 } else { | |
964 // remove set | |
965 var $set = data.$buttonSets[setIdx]; | |
966 if ($set == null) return false; | |
967 var btnWidth = $set.width(); | |
968 // hide last set | |
969 $set.hide(); | |
970 // take remaining sets and move right | |
971 var $otherSets = data.$elem.find('div.buttons:visible'); | |
972 if (animated) { | |
973 $otherSets.animate({left : '+='+btnWidth+'px'}, 'fast'); | |
974 } else { | |
975 $otherSets.css({left : '+='+btnWidth+'px'}); | |
976 } | |
977 } | |
978 return true; | |
979 }; | |
980 | |
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981 // create Transform from area and $img |
675 | 982 var getImgTrafo = function ($img, area, rot, hmir, vmir) { |
658
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983 var picrect = geom.rectangle($img); |
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984 var trafo = geom.transform(); |
675 | 985 // move zoom area offset to center |
658
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986 trafo.concat(trafo.getTranslation(geom.position(-area.x, -area.y))); |
675 | 987 // scale zoom area size to [1,1] |
658
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988 trafo.concat(trafo.getScale(geom.size(1/area.width, 1/area.height))); |
675 | 989 // rotate and mirror (around transformed image center i.e. [0.5,0.5]) |
990 if (rot || hmir || vmir) { | |
991 // move [0.5,0.5] to center | |
992 trafo.concat(trafo.getTranslation(geom.position(-0.5, -0.5))); | |
993 if (hmir) { | |
994 // mirror about center | |
995 trafo.concat(trafo.getMirror('y')); | |
996 } | |
997 if (vmir) { | |
998 // mirror about center | |
999 trafo.concat(trafo.getMirror('x')); | |
1000 } | |
1001 if (rot) { | |
1002 // rotate around center | |
1003 trafo.concat(trafo.getRotation(parseFloat(rot))); | |
1004 } | |
1005 // move back | |
1006 trafo.concat(trafo.getTranslation(geom.position(0.5, 0.5))); | |
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1007 } |
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1008 // scale to screen position and size |
658
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1009 trafo.concat(trafo.getScale(picrect)); |
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1010 trafo.concat(trafo.getTranslation(picrect)); |
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1011 return trafo; |
655 | 1012 }; |
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1013 |
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1014 // returns function for load event of scaler img |
636 | 1015 var scalerImgLoadedHandler = function (data) { |
1016 var $img = data.$img; | |
633 | 1017 return function () { |
627 | 1018 console.debug("img loaded! this=", this, " data=", data); |
1019 // create Transform from current area and picsize | |
675 | 1020 data.imgTrafo = getImgTrafo($img, data.zoomArea, |
1021 data.settings.rot, data.scalerFlags.hmir, data.scalerFlags.vmir); | |
686 | 1022 console.debug("imgTrafo=", data.imgTrafo); |
627 | 1023 // display marks |
633 | 1024 renderMarks(data); |
695
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1025 // TODO: digilib.showArrows(); // show arrow overlays for zoom navigation |
678
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1026 var $birdImg = data.$birdImg; |
705 | 1027 // should the birdview adapt to mirror or rotation? decision: No. :-) |
670
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1028 if ($birdImg) { |
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1029 $birdImg.triggerHandler('load'); |
678
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1030 }; |
705 | 1031 // TODO: the actual moving code |
1032 if (!isFullArea(data.zoomArea)) { | |
1033 setupZoomDrag(data); | |
1034 }; | |
658
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1035 }; |
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1036 }; |
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1037 |
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1038 // returns function for load event of bird's eye view img |
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1039 var birdImgLoadedHandler = function (data) { |
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1040 var $img = data.$birdImg; |
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1041 return function () { |
677
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1042 console.debug("birdimg loaded! this=", this, " data=", data); |
658
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1043 // create Transform from current area and picsize |
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1044 data.birdTrafo = getImgTrafo($img, MAX_ZOOMAREA); |
668 | 1045 // display red indicator around zoomarea |
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1046 renderbirdZoom(data); |
613
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1047 }; |
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1048 }; |
633 | 1049 |
1050 // place marks on the image | |
1051 var renderMarks = function (data) { | |
647 | 1052 var $elem = data.$elem; |
643 | 1053 var marks = data.marks; |
649 | 1054 // TODO: clear marks first(?) |
633 | 1055 for (var i = 0; i < marks.length; i++) { |
1056 var mark = marks[i]; | |
643 | 1057 if (data.zoomArea.containsPosition(mark)) { |
633 | 1058 var mpos = data.imgTrafo.transform(mark); |
664
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1059 console.debug("renderMarks: mpos=",mpos); |
633 | 1060 // create mark |
1061 var html = '<div class="mark">'+(i+1)+'</div>'; | |
1062 var $mark = $(html); | |
1063 $elem.append($mark); | |
654 | 1064 $mark.offset({left : mpos.x, top : mpos.y}); |
633 | 1065 } |
1066 } | |
1067 }; | |
655 | 1068 |
677
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1069 // show zoom area indicator on bird's eye view |
678
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1070 var renderbirdZoom = function (data) { |
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1071 var $birdZoom = data.$birdZoom; |
659 | 1072 var zoomArea = data.zoomArea; |
1073 var indRect = data.birdTrafo.transform(zoomArea); | |
670
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1074 var coords = { |
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1075 left : indRect.x-2, // acount for frame width |
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1076 top : indRect.y-2, |
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1077 width : indRect.width, |
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1078 height: indRect.height |
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1079 }; |
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1080 var normalSize = isFullArea(zoomArea); |
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1081 if (data.settings.interactionMode === 'fullscreen') { |
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1082 // no animation for fullscreen |
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1083 if (normalSize) return $birdZoom.hide(); |
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1084 $birdZoom.width(coords.width); |
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1085 $birdZoom.height(coords.height); |
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1086 $birdZoom.offset(coords); |
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1087 $birdZoom.show(); |
670
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1088 return; |
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1089 }; |
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1090 // nice animation for embedded mode :-) |
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1091 var makeCompleteFunction = function($birdZoom, normalSize) { |
670
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1092 return function() { |
678
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1093 if (normalSize) $birdZoom.hide(); |
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1094 }; |
670
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1095 }; |
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1096 var opts = { |
678
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1097 'complete' : makeCompleteFunction($birdZoom, normalSize) |
670
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1098 }; |
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1099 if (!normalSize && $birdZoom.css('display') === 'none') $birdZoom.show(); |
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1100 $birdZoom.animate(coords, opts); |
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1101 }; |
659 | 1102 |
647 | 1103 // zooms by the given factor |
643 | 1104 var zoomBy = function(data, factor) { |
1105 var area = data.zoomArea; | |
1106 var newarea = area.copy(); | |
1107 // scale | |
1108 newarea.width /= factor; | |
1109 newarea.height /= factor; | |
1110 // and recenter | |
1111 newarea.x -= 0.5 * (newarea.width - area.width); | |
1112 newarea.y -= 0.5 * (newarea.height - area.height); | |
1113 newarea = MAX_ZOOMAREA.fit(newarea); | |
1114 data.zoomArea = newarea; | |
644
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1115 redisplay(data); |
643 | 1116 }; |
1117 | |
647 | 1118 // add a mark where clicked |
1119 var setMark = function (data) { | |
649 | 1120 var $scaler = data.$scaler; |
647 | 1121 // start event capturing |
649 | 1122 $scaler.one('click.digilib', function (evt) { |
647 | 1123 // event handler adding a new mark |
672
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1124 var mpos = geom.position(evt); |
647 | 1125 var pos = data.imgTrafo.invtransform(mpos); |
1126 data.marks.push(pos); | |
1127 redisplay(data); | |
649 | 1128 return false; // do we even get here? |
647 | 1129 }); |
1130 }; | |
668 | 1131 |
654 | 1132 var zoomArea = function(data) { |
1133 $elem = data.$elem; | |
1134 $scaler = data.$scaler; | |
1135 var pt1, pt2; | |
1136 var $zoomDiv = $('<div class="zoomrect" style="display:none"/>'); | |
1137 $elem.append($zoomDiv); | |
668 | 1138 $zoomDiv.css(data.settings.zoomrectStyle); |
654 | 1139 var picRect = geom.rectangle($scaler); |
1140 // FIX ME: is there a way to query the border width from CSS info? | |
1141 // rect.x -= 2; // account for overlay borders | |
1142 // rect.y -= 2; | |
1143 | |
1144 var zoomStart = function (evt) { | |
1145 pt1 = geom.position(evt); | |
1146 // setup and show zoom div | |
1147 //moveElement(zoomdiv, Rectangle(pt1.x, pt1.y, 0, 0)); | |
1148 $zoomDiv.offset({left : pt1.x, top : pt1.y}); | |
668 | 1149 $zoomDiv.width(0).height(0); |
654 | 1150 $zoomDiv.show(); |
1151 // register events | |
1152 $elem.bind("mousemove.digilib", zoomMove); | |
1153 $elem.bind("mouseup.digilib", zoomEnd); | |
1154 return false; | |
1155 }; | |
668 | 1156 |
654 | 1157 // mouseup handler: end moving |
1158 var zoomEnd = function (evt) { | |
1159 pt2 = geom.position(evt); | |
1160 // assume a click and continue if the area is too small | |
1161 var clickRect = geom.rectangle(pt1, pt2); | |
1162 if (clickRect.getArea() <= 5) { | |
1163 return false; | |
1164 } | |
1165 // hide zoom div | |
1166 $zoomDiv.remove(); | |
1167 // unregister events | |
1168 $elem.unbind("mousemove.digilib", zoomMove); | |
1169 $elem.unbind("mouseup.digilib", zoomEnd); | |
1170 // clip and transform | |
1171 clickRect.clipTo(picRect); | |
1172 var area = data.imgTrafo.invtransform(clickRect); | |
1173 data.zoomArea = area; | |
1174 // zoomed is always fit | |
1175 data.settings.ws = 1; | |
1176 redisplay(data); | |
1177 return false; | |
1178 }; | |
668 | 1179 |
654 | 1180 // mouse move handler |
1181 var zoomMove = function (evt) { | |
1182 pt2 = geom.position(evt); | |
1183 var rect = geom.rectangle(pt1, pt2); | |
1184 rect.clipTo(picRect); | |
1185 // update zoom div | |
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1186 rect.adjustDiv($zoomDiv); |
654 | 1187 return false; |
1188 }; | |
668 | 1189 |
654 | 1190 // bind start zoom handler |
1191 $scaler.one('mousedown.digilib', zoomStart); | |
1192 }; | |
647 | 1193 |
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1194 var birdZoom = function(data) { |
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1195 var $birdImg = data.$birdImg; |
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1196 var $birdZoom = data.$birdZoom; |
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1197 var startPos, newRect, birdImgRect, birdZoomRect; |
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1198 |
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1199 var birdZoomMove = function(evt) { |
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|
1200 // mousemove handler: drag |
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1201 var pos = geom.position(evt); |
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1202 var dx = pos.x - startPos.x; |
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1203 var dy = pos.y - startPos.y; |
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|
1204 // move birdZoom div, keeping size |
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1205 newRect = geom.rectangle( |
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|
1206 birdZoomRect.x + dx, |
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1207 birdZoomRect.y + dy, |
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1208 birdZoomRect.width, |
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1209 birdZoomRect.height |
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1210 ); |
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|
1211 // stay within birdimage |
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1212 newRect.stayInside(birdImgRect); |
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1213 $birdZoom.offset({left : newRect.x, top : newRect.y}); |
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1214 // $birdZoom.show(); |
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1215 return false; |
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|
1216 }; |
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1217 |
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1218 var birdZoomEndDrag = function(evt) { |
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1219 // mouseup handler: reload page |
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1220 var settings = data.settings; |
680 | 1221 $(document).unbind("mousemove.digilib", birdZoomMove); |
1222 $(document).unbind("mouseup.digilib", birdZoomEndDrag); | |
1223 $birdZoom.unbind("mousemove.digilib", birdZoomMove); | |
1224 $birdZoom.unbind("mouseup.digilib", birdZoomEndDrag); | |
678
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1225 if (newRect == null) { // no movement happened |
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1226 startPos = birdZoomRect.getCenter(); |
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1227 birdZoomMove(evt); // set center to click position |
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1228 }; |
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1229 if (data.zoomArea) { |
679 | 1230 // should always be true |
1231 var x = cropFloat((newRect.x - birdImgRect.x + 2) / birdImgRect.width); | |
1232 var y = cropFloat((newRect.y - birdImgRect.y + 2) / birdImgRect.height); | |
1233 data.zoomArea.x = x; | |
1234 data.zoomArea.y = y; | |
678
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1235 }; |
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1236 settings.ws = 1; // zoomed is always fit |
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1237 redisplay(data); |
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1238 return false; |
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|
1239 }; |
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1240 |
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1241 var birdZoomStartDrag = function(evt) { |
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1242 // mousedown handler: start dragging bird zoom to a new position |
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1243 startPos = geom.position(evt); |
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1244 birdImgRect = geom.rectangle($birdImg); |
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1245 birdZoomRect = geom.rectangle($birdZoom); |
680 | 1246 $(document).bind("mousemove.digilib", birdZoomMove); |
1247 $(document).bind("mouseup.digilib", birdZoomEndDrag); | |
1248 $birdZoom.bind("mousemove.digilib", birdZoomMove); | |
1249 $birdZoom.bind("mouseup.digilib", birdZoomEndDrag); | |
678
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1250 return false; |
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1251 }; |
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1252 |
681 | 1253 $birdImg.bind("mousedown.digilib", birdZoomStartDrag); |
1254 $birdZoom.bind("mousedown.digilib", birdZoomStartDrag); | |
678
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1255 }; |
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1256 |
705 | 1257 var setupZoomDrag = function(data) { |
1258 // setup handlers for dragging the zoomed image | |
1259 var pt1, pt2; | |
1260 var dx = 0; | |
1261 var dy = 0; | |
1262 var $elem = data.$elem; | |
1263 var $scaler = data.$scaler; | |
1264 var $img = data.$img; | |
1265 var $bg = $('<div class="bgDrag" style="display:none"/>'); | |
1266 $scaler.before($bg); // set as background | |
1267 | |
1268 var dragStart = function (evt) { | |
1269 // drag the image and load a new detail on mouse up | |
1270 // useless if not zoomed | |
1271 if (isFullArea(data.zoomArea)) return false; | |
1272 if(evt.preventDefault) evt.preventDefault(); // no Firefox drag and drop (NEEDED?) | |
1273 pt1 = geom.position(evt); | |
1274 $imgRect = geom.rectangle($img); | |
1275 $imgRect.adjustDiv($bg); // set background size | |
1276 // hide the scaler image, show it as background of div instead | |
1277 $bg.css({ | |
1278 'background-image' : 'url(' + $img.attr('src') + ')', | |
1279 'background-repeat' : 'no-repeat', | |
1280 'cursor' : 'move' | |
1281 }); | |
1282 $img.hide(); | |
1283 $bg.show(); | |
1284 $(document).bind("mousemove.digilib", dragMove); | |
1285 $(document).bind("mouseup.digilib", dragEnd); | |
1286 window.focus(); | |
1287 }; | |
1288 | |
1289 var dragMove = function (evt) { | |
1290 // mousemove handler: drag | |
1291 var pos = geom.position(evt); | |
1292 if(evt.preventDefault) evt.preventDefault(); // no Firefox drag and drop (NEEDED?) | |
1293 dx = pos.x - pt1.x; | |
1294 dy = pos.y - pt1.y; | |
1295 // move the background image to the new position | |
1296 $bg.css({ | |
1297 'background-position' : dx + "px " + dy + "px" | |
1298 }); | |
1299 return false; | |
1300 }; | |
1301 | |
1302 var dragEnd = function (evt) { | |
1303 // mouseup handler: reload digilib | |
1304 $bg.css({ | |
1305 'cursor' : 'default' | |
1306 }); | |
1307 $(document).unbind("mousemove.digilib", dragMove); | |
1308 $(document).unbind("mouseup.digilib", dragEnd); | |
1309 // calculate relative offset | |
1310 var x = -dx / $img.width(); | |
1311 var y = -dy / $img.height(); | |
1312 if (dx == 0 && dy == 0) | |
1313 return false // no movement | |
1314 // reload with scaler image showing the new ausschnitt | |
1315 // digilib.moveBy(x, y); | |
1316 return false; | |
1317 }; | |
1318 | |
1319 $scaler.bind("mousedown.digilib", dragStart); | |
1320 }; | |
1321 | |
703 | 1322 // get image quality as a number (0..2) |
1323 var getQuality = function (data) { | |
1324 var flags = data.scalerFlags; | |
1325 var q = flags.q2 || flags.q1 || 'q0'; // assume q0 as default | |
1326 return parseInt(q[1], 10); | |
705 | 1327 }; |
703 | 1328 |
1329 // set image quality as a number (0..2) | |
1330 var setQuality = function (data, qual) { | |
1331 var flags = data.scalerFlags; | |
1332 // clear flags | |
1333 for (var i = 0; i < 3; ++i) { | |
1334 delete flags['q'+i]; | |
1335 } | |
1336 flags['q'+qual] = 'q'+qual; | |
705 | 1337 }; |
703 | 1338 |
650 | 1339 // sets a key to a value (relative values with +/- if relative=true) |
1340 var setNumValue = function(settings, key, value) { | |
1341 if (isNumber(value)) return settings[key] = value; | |
1342 var sign = value.substring(0,1); | |
1343 if (sign === '+' || sign === '-') { | |
1344 if (settings[key] == null) { | |
651
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1345 // this isn't perfect but still... |
650 | 1346 settings[key] = 0; |
1347 } | |
1348 settings[key] = parseFloat(settings[key]) + parseFloat(value); | |
1349 } else { | |
1350 settings[key] = value; | |
1351 } | |
1352 return settings[key]; | |
1353 }; | |
655 | 1354 |
1355 // auxiliary function (from old dllib.js) | |
659 | 1356 isFullArea = function(area) { |
1357 return (area.width === 1.0) && (area.height === 1.0); | |
655 | 1358 }; |
1359 | |
641 | 1360 // auxiliary function (from Douglas Crockford, A.10) |
1361 var isNumber = function isNumber(value) { | |
1362 return typeof value === 'number' && isFinite(value); | |
1363 }; | |
655 | 1364 |
631 | 1365 // auxiliary function to crop senseless precision |
1366 var cropFloat = function (x) { | |
637 | 1367 return parseInt(10000 * x, 10) / 10000; |
631 | 1368 }; |
655 | 1369 |
692 | 1370 // fallback for console.log calls |
1371 if (customConsole) { | |
1372 var logFunction = function(type) { | |
1373 return function(){ | |
1374 var $debug = $('#debug'); // debug div | |
1375 if (!$debug) return; | |
1376 var args = Array.prototype.slice.call(arguments); | |
1377 var argtext = args.join(' '); | |
1378 var $logDiv = $('<div/>'); | |
1379 $logDiv.addClass(type); | |
1380 $logDiv.text(argtext); | |
1381 $debug.append($logDiv); | |
1382 }; | |
1383 }; | |
1384 console.log = logFunction('_log'); | |
1385 console.debug = logFunction('_debug'); | |
1386 console.error = logFunction('_error'); | |
1387 }; | |
1388 | |
605 | 1389 // hook plugin into jquery |
651
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1390 $.fn.digilib = function(action) { |
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1391 if (actions[action]) { |
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1392 // call action on this with the remaining arguments (inserting data as first argument) |
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1393 var $elem = $(this); |
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1394 var data = $elem.data('digilib'); |
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1395 var args = Array.prototype.slice.call(arguments, 1); |
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1396 args.unshift(data); |
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1397 return actions[action].apply(this, args); |
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1398 } else if (typeof(action) === 'object' || !action) { |
634 | 1399 // call init on this |
651
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1400 return actions.init.apply(this, arguments); |
605 | 1401 } else { |
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1402 $.error( 'action ' + action + ' does not exist on jQuery.digilib' ); |
605 | 1403 } |
1404 }; | |
692 | 1405 |
604 | 1406 })(jQuery); |