Mercurial > hg > digilib-old
annotate client/digitallibrary/jquery/jquery.digilib.js @ 658:9ddcf0070122 jquery
split bird's view code in two more parts, analog to scaler-img code.
setupBirdDiv sets onload handler on bird img, onload handler calls renderBirdArea.
both handlers use common transform setup code.
author | robcast |
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date | Fri, 21 Jan 2011 14:53:37 +0100 |
parents | 436e10669df8 |
children | 9da101c94465 |
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 = { | |
9 log : function(){}, | |
10 debug : function(){}, | |
11 error : function(){} | |
12 }; | |
13 } | |
604 | 14 |
15 (function($) { | |
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16 var buttons = { |
610 | 17 reference : { |
18 onclick : "javascript:getRefWin()", | |
19 tooltip : "get a reference URL", | |
20 img : "reference.png" | |
21 }, | |
22 zoomin : { | |
643 | 23 onclick : ["zoomBy", 1.4], |
610 | 24 tooltip : "zoom in", |
25 img : "zoom-in.png" | |
26 }, | |
27 zoomout : { | |
643 | 28 onclick : ["zoomBy", 0.7], |
610 | 29 tooltip : "zoom out", |
30 img : "zoom-out.png" | |
31 }, | |
32 zoomarea : { | |
654 | 33 onclick : "zoomArea", |
610 | 34 tooltip : "zoom area", |
35 img : "zoom-area.png" | |
36 }, | |
37 zoomfull : { | |
650 | 38 onclick : "zoomFull", |
610 | 39 tooltip : "view the whole image", |
40 img : "zoom-full.png" | |
41 }, | |
42 pagewidth : { | |
650 | 43 onclick : ["zoomFull", "width"], |
610 | 44 tooltip : "page width", |
45 img : "pagewidth.png" | |
46 }, | |
47 back : { | |
623 | 48 onclick : ["gotoPage", "-1"], |
610 | 49 tooltip : "goto previous image", |
50 img : "back.png" | |
51 }, | |
52 fwd : { | |
623 | 53 onclick : ["gotoPage", "+1"], |
610 | 54 tooltip : "goto next image", |
55 img : "fwd.png" | |
56 }, | |
57 page : { | |
58 onclick : "javascript:gotoPageWin()", | |
59 tooltip : "specify image", | |
60 img : "page.png" | |
61 }, | |
62 bird : { | |
635 | 63 onclick : "showBirdDiv", |
610 | 64 tooltip : "show bird's eye view", |
65 img : "birds-eye.png" | |
66 }, | |
67 help : { | |
635 | 68 onclick : "showAboutDiv", |
610 | 69 tooltip : "about Digilib", |
70 img : "help.png" | |
71 }, | |
72 reset : { | |
73 onclick : "javascript:resetImage()", | |
74 tooltip : "reset image", | |
75 img : "reset.png" | |
76 }, | |
77 mark : { | |
647 | 78 onclick : "setMark", |
610 | 79 tooltip : "set a mark", |
80 img : "mark.png" | |
81 }, | |
82 delmark : { | |
650 | 83 onclick : "removeMark", |
610 | 84 tooltip : "delete the last mark", |
85 img : "delmark.png" | |
86 }, | |
87 hmir : { | |
88 onclick : "javascript:mirror('h')", | |
89 tooltip : "mirror horizontally", | |
90 img : "mirror-horizontal.png" | |
91 }, | |
92 vmir : { | |
93 onclick : "javascript:mirror('v')", | |
94 tooltip : "mirror vertically", | |
95 img : "mirror-vertical.png" | |
96 }, | |
97 rot : { | |
98 onclick : "javascript:setParamWin('rot', 'Rotate (0..360) clockwise')", | |
99 tooltip : "rotate image", | |
100 img : "rotate.png" | |
101 }, | |
102 brgt : { | |
103 onclick : "javascript:setParamWin('brgt', 'Brightness (-255..255)')", | |
104 tooltip : "set brightness", | |
105 img : "brightness.png" | |
106 }, | |
107 cont : { | |
108 onclick : "javascript:setParamWin('cont', 'Contrast (0..8)')", | |
109 tooltip : "set contrast", | |
110 img : "contrast.png" | |
111 }, | |
112 rgb : { | |
113 onclick : "javascript:setParamWin('rgb', '...')", | |
114 tooltip : "set rgb values", | |
115 img : "rgb.png" | |
116 }, | |
117 quality : { | |
118 onclick : "javascript:setQualityWin('Quality (0..2)')", | |
119 tooltip : "set image quality", | |
120 img : "quality.png" | |
121 }, | |
122 size : { | |
123 onclick : "javascript:toggleSizeMenu()", | |
124 tooltip : "set page size", | |
125 img : "size.png" | |
126 }, | |
127 calibrationx : { | |
128 onclick : "javascript:calibrate('x')", | |
129 tooltip : "calibrate screen x-ratio", | |
130 img : "calibration-x.png" | |
131 }, | |
132 scale : { | |
133 onclick : "javascript:toggleScaleMenu()", | |
134 tooltip : "change image scale", | |
135 img : "original-size.png" | |
136 }, | |
137 options : { | |
138 onclick : "javascript:toggleOptionDiv()", | |
139 tooltip : "hide options", | |
140 img : "options.png" | |
141 }, | |
142 SEP : { | |
143 img : "sep.png" | |
144 } | |
145 }; | |
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146 |
605 | 147 var defaults = { |
616 | 148 // version of this script |
635 | 149 'version' : 'jquery.digilib.js 0.9', |
616 | 150 // logo url |
151 'logoUrl' : '../img/digilib-logo-text1.png', | |
635 | 152 // homepage url (behind logo) |
153 'homeUrl' : 'http://digilib.berlios.de', | |
610 | 154 // base URL to Scaler servlet |
652 | 155 'scalerBaseUrl' : null, |
610 | 156 // list of Scaler parameters |
627 | 157 'scalerParamNames' : ['fn','pn','dw','dh','ww','wh','wx','wy','ws','mo', |
158 'rot','cont','brgt','rgbm','rgba','ddpi','ddpix','ddpiy'], | |
159 // Scaler parameter defaults | |
643 | 160 'pn' : 1, |
627 | 161 'ww' : 1.0, |
162 'wh' : 1.0, | |
163 'wx' : 0.0, | |
164 'wy' : 0.0, | |
165 'ws' : 1.0, | |
643 | 166 'mo' : '', |
167 'rot' : 0, | |
168 'cont' : 0, | |
169 'brgt' : 0, | |
170 'rgbm' : '0/0/0', | |
171 'rgba' : '0/0/0', | |
172 'ddpi' : null, | |
173 'ddpix' : null, | |
174 'ddpiy' : null, | |
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175 // list of digilib parameters |
650 | 176 'digilibParamNames' : ['fn','pn','ww','wh','wx','wy','ws','mo','rot','cont','brgt','rgbm','rgba','mk','clop'], |
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177 // digilib parameter defaults |
643 | 178 'mk' : '', |
650 | 179 'clop' : '', |
643 | 180 // mode of operation: |
181 // fullscreen = take parameters from page URL, keep state in page URL | |
182 // embedded = take parameters from Javascript options, keep state inside object | |
610 | 183 'interactionMode' : 'fullscreen', |
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184 // buttons |
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185 'buttons' : buttons, |
612 | 186 // path to button images (must end with a slash) |
187 'buttonsImagePath' : '../greyskin/', | |
652 | 188 // button groups |
651
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189 //'buttonsStandard' : ["reference","zoomin","zoomout","zoomarea","zoomfull","pagewidth","back","fwd","page","bird","SEP","help","reset","options"], |
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190 'buttonsStandard' : ["reference","zoomin","zoomout","zoomarea","zoomfull","pagewidth","mark","delmark","back","fwd","page","bird","SEP","help","reset","options"], |
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191 'buttonsSpecial' : ["mark","delmark","hmir","vmir","rot","brgt","cont","rgb","quality","size","calibrationx","scale","SEP","options"], |
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192 'buttonsCustom' : [], |
616 | 193 // is birdView shown? |
194 'isBirdDivVisible' : false, | |
615 | 195 // dimensions of bird's eye window |
639 | 196 'birdDivOptions' : {'dw' : 200, 'dh' : 200}, |
616 | 197 // is the "about" window shown? |
198 'isAboutDivVisible' : false | |
199 | |
610 | 200 }; |
655 | 201 |
608 | 202 // affine geometry classes |
203 var geom = dlGeometry(); | |
655 | 204 |
643 | 205 var MAX_ZOOMAREA = geom.rectangle(0, 0, 1, 1); |
655 | 206 |
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207 var actions = { |
654 | 208 // init: digilib initialization |
604 | 209 init : function(options) { |
608 | 210 // settings for this digilib instance are merged from defaults and options |
607 | 211 var settings = $.extend({}, defaults, options); |
636 | 212 var isFullscreen = settings.interactionMode === 'fullscreen'; |
213 var queryParams = {}; | |
607 | 214 if (isFullscreen) { |
215 queryParams = parseQueryParams(); | |
652 | 216 // check scalerBaseUrl |
217 if (settings.scalerBaseUrl == null) { | |
218 // try the host this came from | |
219 var h = window.location.host; | |
220 if (window.location.host) { | |
221 var url = window.location.href; | |
222 // assume the page lives in [webapp]/jquery/ | |
223 var pos = url.indexOf('jquery/'); | |
224 if (pos > 0) { | |
225 settings.scalerBaseUrl = url.substring(0, pos) + 'servlet/Scaler'; | |
226 } | |
227 } | |
228 } | |
636 | 229 } |
604 | 230 return this.each(function() { |
605 | 231 var $elem = $(this); |
232 var data = $elem.data('digilib'); | |
607 | 233 var elemSettings; |
608 | 234 // if the plugin hasn't been initialized yet |
604 | 235 if (!data) { |
605 | 236 // merge query parameters |
607 | 237 if (isFullscreen) { |
238 elemSettings = $.extend({}, settings, queryParams); | |
239 } else { | |
240 elemSettings = $.extend({}, settings, parseImgParams($elem)); | |
634 | 241 } |
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242 // store $(this) element in the settings |
627 | 243 data = { |
647 | 244 $elem : $elem, |
636 | 245 settings : elemSettings, |
246 queryParams : queryParams | |
627 | 247 }; |
605 | 248 // store in data element |
627 | 249 $elem.data('digilib', data); |
604 | 250 } |
633 | 251 unpackParams(data); |
608 | 252 // create HTML structure |
627 | 253 setupScalerDiv(data); |
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254 setupButtons(data, 'buttonsStandard'); |
639 | 255 // bird's eye view creation |
256 if (settings.isBirdDivVisible) { | |
641 | 257 setupBirdDiv(data); |
639 | 258 } |
627 | 259 // about window creation - TODO: could be deferred? restrict to only one item? |
628
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260 setupAboutDiv(data); |
604 | 261 }); |
262 }, | |
608 | 263 |
654 | 264 // destroy: clean up digilib |
651
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265 destroy : function(data) { |
604 | 266 return this.each(function(){ |
636 | 267 var $elem = $(this); |
654 | 268 $(window).unbind('.digilib'); // unbind all digilibs(?) |
604 | 269 data.digilib.remove(); |
636 | 270 $elem.removeData('digilib'); |
604 | 271 }); |
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272 }, |
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273 |
635 | 274 // show or hide the 'about' window |
651
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275 showAboutDiv : function(data, show) { |
635 | 276 data.settings.isAboutDivVisible = showDiv(data.settings.isAboutDivVisible, data.$aboutDiv, show); |
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277 }, |
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278 |
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279 // event handler: toggles the visibility of the bird's eye window |
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280 showBirdDiv : function (data, show) { |
638 | 281 if (data.$birdDiv == null) { |
282 // no bird div -> create | |
283 setupBirdDiv(data); | |
284 } | |
655 | 285 // TODO: keep bird view visible after reload (parameter, cookie?) |
635 | 286 data.settings.isBirdDivVisible = showDiv(data.settings.isBirdDivVisible, data.$birdDiv, show); |
655 | 287 showBirdIndicator(data); |
623 | 288 }, |
655 | 289 |
623 | 290 // goto given page nr (+/-: relative) |
651
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291 gotoPage : function (data, pageNr) { |
636 | 292 var settings = data.settings; |
623 | 293 var oldpn = settings.pn; |
624 | 294 var pn = setNumValue(settings, "pn", pageNr); |
295 if (pn == null) return false; // nothing happened | |
623 | 296 if (pn < 1) { |
297 alert("no such page (page number too low)"); | |
298 settings.pn = oldpn; | |
299 return false; | |
634 | 300 } |
623 | 301 if (settings.pt) { |
302 if (pn > settings.pt) { | |
303 alert("no such page (page number too high)"); | |
304 settings.pn = oldpn; | |
305 return false; | |
306 } | |
634 | 307 } |
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308 // reset mk and others(?) |
643 | 309 data.marks = []; |
310 data.zoomArea = MAX_ZOOMAREA; | |
636 | 311 // then reload |
644
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312 redisplay(data); |
643 | 313 }, |
655 | 314 |
643 | 315 // zoom by a given factor |
651
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316 zoomBy : function (data, factor) { |
643 | 317 zoomBy(data, factor); |
647 | 318 }, |
319 | |
654 | 320 // zoom interactively |
321 zoomArea : function (data) { | |
322 zoomArea(data); | |
323 }, | |
324 | |
647 | 325 // zoom out to full page |
651
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326 zoomFull : function (data, mode) { |
647 | 327 data.zoomArea = MAX_ZOOMAREA; |
650 | 328 if (mode === 'width') { |
329 data.dlOpts.fitwidth = 1; | |
330 delete data.dlOpts.fitheight; | |
331 } else if (mode === 'height') { | |
332 data.dlOpts.fitheight = 1; | |
333 delete data.dlOpts.fitwidth; | |
334 } else { | |
335 delete data.dlOpts.fitwidth; | |
336 delete data.dlOpts.fitheight; | |
337 } | |
647 | 338 redisplay(data); |
339 }, | |
340 | |
341 // set a mark by clicking (or giving a position) | |
651
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342 setMark : function (data, mpos) { |
647 | 343 if (mpos == null) { |
344 // interactive | |
345 setMark(data); | |
346 } else { | |
347 // use position | |
348 data.marks.push(pos); | |
349 redisplay(data); | |
350 } | |
650 | 351 }, |
352 | |
353 // remove the last mark | |
651
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354 removeMark : function (data) { |
650 | 355 data.marks.pop(); |
356 redisplay(data); | |
604 | 357 } |
650 | 358 |
605 | 359 }; |
604 | 360 |
608 | 361 // returns parameters from page url |
607 | 362 var parseQueryParams = function() { |
636 | 363 return parseQueryString(window.location.search.slice(1)); |
364 }; | |
655 | 365 |
636 | 366 // returns parameters from embedded img-element |
607 | 367 var parseImgParams = function($elem) { |
613
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368 var src = $elem.find('img').first().attr('src'); |
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369 if (!src) { |
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370 return null; |
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371 } |
607 | 372 var pos = src.indexOf('?'); |
373 var query = (pos < 0) ? '' : src.substring(pos + 1); | |
374 var scalerUrl = src.substring(0, pos); | |
627 | 375 var params = parseQueryString(query); |
376 params.scalerBaseUrl = scalerUrl; | |
377 return params; | |
636 | 378 }; |
607 | 379 |
608 | 380 // parses query parameter string into parameter object |
607 | 381 var parseQueryString = function(query) { |
382 var pairs = query.split("&"); | |
627 | 383 var params = {}; |
636 | 384 //var keys = []; |
607 | 385 for (var i = 0; i < pairs.length; i++) { |
386 var pair = pairs[i].split("="); | |
387 if (pair.length === 2) { | |
627 | 388 params[pair[0]] = pair[1]; |
636 | 389 //keys.push(pair[0]); |
634 | 390 } |
636 | 391 } |
627 | 392 return params; |
636 | 393 }; |
604 | 394 |
643 | 395 // returns a query string from key names from a parameter hash (ignoring if the same value is in defaults) |
396 var getParamString = function (settings, keys, defaults) { | |
615 | 397 var paramString = ''; |
650 | 398 var nx = false; |
615 | 399 for (i = 0; i < keys.length; ++i) { |
400 var key = keys[i]; | |
643 | 401 if ((settings[key] != null) && ((defaults == null) || (settings[key] !== defaults[key]))) { |
615 | 402 // first param gets no '&' |
650 | 403 if (nx) { |
404 paramString += '&'; | |
405 } else { | |
406 nx = true; | |
407 } | |
615 | 408 // add parm=val |
409 paramString += key + '=' + settings[key]; | |
643 | 410 } |
615 | 411 } |
412 return paramString; | |
631 | 413 }; |
414 | |
636 | 415 // returns URL and query string for Scaler |
416 var getScalerUrl = function (data) { | |
653 | 417 var settings = data.settings; |
652 | 418 if (settings.scalerBaseUrl == null) { |
419 alert("ERROR: URL of digilib Scaler servlet missing!"); | |
420 } | |
636 | 421 var keys = settings.scalerParamNames; |
643 | 422 var queryString = getParamString(settings, keys, defaults); |
636 | 423 var url = settings.scalerBaseUrl + '?' + queryString; |
424 return url; | |
425 }; | |
426 | |
427 // returns URL and query string for current digilib | |
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428 var getDigilibUrl = function (data) { |
643 | 429 packParams(data); |
636 | 430 var settings = data.settings; |
644
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431 var queryString = getParamString(settings, settings.digilibParamNames, defaults); |
636 | 432 var url = window.location.toString(); |
433 var pos = url.indexOf('?'); | |
434 var baseUrl = url.substring(0, pos); | |
435 var newurl = baseUrl + '?' + queryString; | |
436 return newurl; | |
437 }; | |
438 | |
655 | 439 // processes some parameters into objects and stuff |
631 | 440 var unpackParams = function (data) { |
441 var settings = data.settings; | |
636 | 442 // zoom area |
631 | 443 var zoomArea = geom.rectangle(settings.wx, settings.wy, settings.ww, settings.wh); |
643 | 444 data.zoomArea = zoomArea; |
636 | 445 // marks |
631 | 446 var marks = []; |
650 | 447 if (settings.mk) { |
448 var mk = settings.mk; | |
449 if (mk.indexOf(";") >= 0) { | |
450 var pa = mk.split(";"); // old format with ";" | |
451 } else { | |
452 var pa = mk.split(","); // new format | |
453 } | |
454 for (var i = 0; i < pa.length ; i++) { | |
455 var pos = pa[i].split("/"); | |
456 if (pos.length > 1) { | |
457 marks.push(geom.position(pos[0], pos[1])); | |
458 } | |
633 | 459 } |
631 | 460 } |
643 | 461 data.marks = marks; |
650 | 462 // mo (Scaler flags) |
463 var flags = {}; | |
464 if (settings.mo) { | |
465 var pa = settings.mo.split(","); | |
466 for (var i = 0; i < pa.length ; i++) { | |
467 flags[pa[i]] = pa[i]; | |
468 } | |
469 } | |
470 data.scalerFlags = flags; | |
471 // clop (digilib options) | |
472 var opts = {}; | |
473 if (settings.clop) { | |
474 var pa = settings.clop.split(","); | |
475 for (var i = 0; i < pa.length ; i++) { | |
476 opts[pa[i]] = pa[i]; | |
477 } | |
478 } | |
479 data.dlOpts = opts; | |
655 | 480 }; |
481 | |
631 | 482 // put objects back into parameters |
483 var packParams = function (data) { | |
484 var settings = data.settings; | |
636 | 485 // zoom area |
643 | 486 if (data.zoomArea) { |
647 | 487 settings.wx = cropFloat(data.zoomArea.x); |
488 settings.wy = cropFloat(data.zoomArea.y); | |
489 settings.ww = cropFloat(data.zoomArea.width); | |
490 settings.wh = cropFloat(data.zoomArea.height); | |
631 | 491 } |
636 | 492 // marks |
643 | 493 if (data.marks) { |
650 | 494 settings.mk = ''; |
643 | 495 for (var i = 0; i < data.marks.length; i++) { |
650 | 496 if (i) { |
497 settings.mk += ','; | |
498 } | |
499 settings.mk += cropFloat(data.marks[i].x).toString() + '/' + cropFloat(data.marks[i].y).toString(); | |
631 | 500 } |
650 | 501 } |
502 // Scaler flags | |
503 if (data.scalerFlags) { | |
504 var mo = ''; | |
505 for (var f in data.scalerFlags) { | |
506 if (mo) { | |
507 mo += ','; | |
508 } | |
509 mo += f; | |
510 } | |
511 settings.mo = mo; | |
512 } | |
513 // digilib options | |
514 if (data.dlOpts) { | |
515 var clop = ''; | |
516 for (var o in data.dlOpts) { | |
517 if (clop) { | |
518 clop += ','; | |
519 } | |
520 clop += o; | |
521 } | |
522 settings.clop = clop; | |
631 | 523 } |
524 }; | |
655 | 525 |
609 | 526 // returns maximum size for scaler img in fullscreen mode |
527 var getFullscreenImgSize = function($elem) { | |
528 var winH = $(window).height(); | |
529 var winW = $(window).width(); | |
530 // TODO: account for borders? | |
531 return geom.size(winW, winH); | |
608 | 532 }; |
655 | 533 |
622 | 534 // (re)load the img from a new scaler URL |
644
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535 var redisplay = function (data) { |
636 | 536 var settings = data.settings; |
537 if (settings.interactionMode === 'fullscreen') { | |
538 // update location.href (browser URL) in fullscreen mode | |
644
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539 var url = getDigilibUrl(data); |
636 | 540 var history = window.history; |
541 if (typeof(history.pushState) === 'function') { | |
542 console.debug("we could modify history, but we don't..."); | |
543 } | |
544 window.location = url; | |
545 } else { | |
546 // embedded mode -- just change img src | |
547 var url = getScalerUrl(data); | |
548 data.$img.attr('src', url); | |
549 } | |
622 | 550 }; |
551 | |
608 | 552 // creates HTML structure for digilib in elem |
627 | 553 var setupScalerDiv = function (data) { |
554 var settings = data.settings; | |
647 | 555 var $elem = data.$elem; |
623 | 556 var $img; |
608 | 557 if (settings.interactionMode === 'fullscreen') { |
609 | 558 // fullscreen |
559 var imgSize = getFullscreenImgSize($elem); | |
650 | 560 // fitwidth/height omits destination height/width |
561 if (data.dlOpts['fitheight'] == null) { | |
562 settings.dw = imgSize.width; | |
563 } | |
564 if (data.dlOpts['fitwidth'] == null) { | |
565 settings.dh = imgSize.height; | |
566 } | |
613
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567 $img = $('<img/>'); |
636 | 568 var scalerUrl = getScalerUrl(data); |
569 $img.attr('src', scalerUrl); | |
609 | 570 } else { |
613
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571 // embedded mode -- try to keep img tag |
623 | 572 $img = $elem.find('img'); |
613
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573 if ($img.length > 0) { |
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574 console.debug("img detach:",$img); |
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575 $img.detach(); |
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576 } else { |
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577 $img = $('<img/>'); |
636 | 578 var scalerUrl = getScalerUrl(data); |
579 $img.attr('src', scalerUrl); | |
613
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580 } |
608 | 581 } |
613
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582 // create new html |
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583 $elem.empty(); // TODO: should we keep stuff for customization? |
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584 var $scaler = $('<div class="scaler"/>'); |
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585 $elem.append($scaler); |
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586 $scaler.append($img); |
622 | 587 $img.addClass('pic'); |
649 | 588 data.$scaler = $scaler; |
636 | 589 data.$img = $img; |
590 $img.load(scalerImgLoadedHandler(data)); | |
608 | 591 }; |
615 | 592 |
610 | 593 // creates HTML structure for buttons in elem |
628
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594 var setupButtons = function (data, actionGroup) { |
647 | 595 var $elem = data.$elem; |
628
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596 var settings = data.settings; |
610 | 597 if (settings.interactionMode === 'fullscreen') { |
598 // fullscreen -- create new | |
612 | 599 var $buttonsDiv = $('<div class="buttons"></div>'); |
600 $elem.append($buttonsDiv); | |
618
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601 var actionNames = settings[actionGroup]; |
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602 for (var i = 0; i < actionNames.length; i++) { |
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603 var actionName = actionNames[i]; |
651
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604 var buttonSettings = settings.buttons[actionName]; |
612 | 605 // construct the button html |
606 var $button = $('<div class="button"></div>'); | |
607 var $a = $('<a/>'); | |
614 | 608 var $img = $('<img class="button"/>'); |
612 | 609 $buttonsDiv.append($button); |
610 $button.append($a); | |
611 $a.append($img); | |
612 // add attributes and bindings | |
651
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613 $button.attr('title', buttonSettings.tooltip); |
618
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614 $button.addClass('button-' + actionName); |
635 | 615 // create handler for the buttons |
649 | 616 $a.bind('click.digilib', (function () { |
651
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617 // we create a new closure to capture the value of action |
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618 var action = buttonSettings.onclick; |
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619 if ($.isArray(action)) { |
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620 // the handler function calls digilib with action and parameters |
649 | 621 return function (evt) { |
651
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622 console.debug('click action=', action, ' evt=', evt); |
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623 $elem.digilib.apply($elem, action); |
649 | 624 return false; |
619 | 625 }; |
635 | 626 } else { |
651
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627 // the handler function calls digilib with action |
649 | 628 return function (evt) { |
651
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629 console.debug('click action=', action, ' evt=', evt); |
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630 $elem.digilib(action); |
649 | 631 return false; |
635 | 632 }; |
633 } | |
634 })()); | |
651
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635 $img.attr('src', settings.buttonsImagePath + buttonSettings.img); |
637 | 636 } |
611 | 637 } |
612 | 638 return $buttonsDiv; |
610 | 639 }; |
615 | 640 |
641 // creates HTML structure for the bird's eye view in elem | |
638 | 642 var setupBirdDiv = function (data) { |
647 | 643 var $elem = data.$elem; |
628
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644 var settings = data.settings; |
615 | 645 // use only the relevant parameters |
646 var keys = ['fn','pn','dw','dh']; | |
639 | 647 var birdSettings = $.extend({}, settings, settings.birdDivOptions); |
628
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648 var birdUrl = settings.scalerBaseUrl + '?' + getParamString(birdSettings, keys); |
615 | 649 // the bird's eye div |
658
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650 var $birdDiv = $('<div class="birdview" style="display:none"/>'); |
615 | 651 // the detail indicator frame |
655 | 652 var $birdzoomDiv = $('<div class="birdzoom" style="position: absolute; background-color: transparent;"/>'); |
615 | 653 // the small image |
654 var $birdImg = $('<img class="birdimg"/>'); | |
658
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655 $elem.append($birdDiv); |
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656 $birdDiv.append($birdzoomDiv); |
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657 $birdDiv.append($birdImg); |
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658 data.$birdDiv = $birdDiv; |
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659 data.$birdImg = $birdImg; |
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660 $birdImg.load(birdImgLoadedHandler(data)); |
615 | 661 $birdImg.attr('src', birdUrl); |
640
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662 if (data.settings.isBirdDivVisible) { |
658
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663 $birdDiv.fadeIn(); |
640
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664 } |
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665 }; |
615 | 666 |
625 | 667 // creates HTML structure for the about view in elem |
628
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668 var setupAboutDiv = function (data) { |
647 | 669 var $elem = data.$elem; |
628
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670 var settings = data.settings; |
625 | 671 var $aboutDiv = $('<div class="about" style="display:none"/>'); |
616 | 672 var $header = $('<p>Digilib Graphic Viewer</p>'); |
673 var $link = $('<a/>'); | |
674 var $logo = $('<img class="logo" title="digilib"/>'); | |
675 var $content = $('<p/>'); | |
676 $elem.append($aboutDiv); | |
677 $aboutDiv.append($header); | |
678 $aboutDiv.append($link); | |
679 $aboutDiv.append($content); | |
680 $link.append($logo); | |
681 $logo.attr('src', settings.logoUrl); | |
635 | 682 $link.attr('href', settings.homeUrl); |
616 | 683 $content.text('Version: ' + settings.version); |
635 | 684 // click hides |
649 | 685 $aboutDiv.bind('click.digilib', function () { |
646 | 686 settings.isAboutDivVisible = showDiv(settings.isAboutDivVisible, $aboutDiv, 0); |
649 | 687 return false; |
688 }); | |
635 | 689 data.$aboutDiv = $aboutDiv; |
634 | 690 }; |
691 | |
635 | 692 // shows some window e.g. 'about' (toggle visibility if show is null) |
693 var showDiv = function (isVisible, $div, show) { | |
645 | 694 if (show == null) { |
635 | 695 // toggle visibility |
696 isVisible = !isVisible; | |
697 } else { | |
698 // set visibility | |
699 isVisible = show; | |
700 } | |
701 if (isVisible) { | |
702 $div.fadeIn(); | |
703 } else { | |
704 $div.fadeOut(); | |
705 } | |
706 return isVisible; | |
634 | 707 }; |
616 | 708 |
658
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709 // create Transform from area and $img |
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710 var getImgTrafo = function ($img, area) { |
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711 var picrect = geom.rectangle($img); |
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712 var trafo = geom.transform(); |
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713 // subtract area offset and size |
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714 trafo.concat(trafo.getTranslation(geom.position(-area.x, -area.y))); |
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715 trafo.concat(trafo.getScale(geom.size(1/area.width, 1/area.height))); |
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716 // scale to screen size |
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717 trafo.concat(trafo.getScale(picrect)); |
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718 trafo.concat(trafo.getTranslation(picrect)); |
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719 return trafo; |
655 | 720 }; |
658
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721 |
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722 // returns function for load event of scaler img |
636 | 723 var scalerImgLoadedHandler = function (data) { |
724 var $img = data.$img; | |
633 | 725 return function () { |
627 | 726 console.debug("img loaded! this=", this, " data=", data); |
727 // create Transform from current area and picsize | |
658
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728 data.imgTrafo = getImgTrafo($img, data.zoomArea); |
627 | 729 // display marks |
633 | 730 renderMarks(data); |
627 | 731 //digilib.showArrows(); // show arrow overlays for zoom navigation |
658
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732 }; |
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733 }; |
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734 |
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735 // returns function for load event of bird's eye view img |
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736 var birdImgLoadedHandler = function (data) { |
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737 var $img = data.$birdImg; |
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738 return function () { |
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739 console.debug("birdimg loaded! this=", this, " data=", data); |
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740 // create Transform from current area and picsize |
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741 data.birdTrafo = getImgTrafo($img, MAX_ZOOMAREA); |
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742 // display marks |
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743 renderBirdArea(data); |
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744 }; |
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745 }; |
633 | 746 |
747 // place marks on the image | |
748 var renderMarks = function (data) { | |
647 | 749 var $elem = data.$elem; |
643 | 750 var marks = data.marks; |
649 | 751 // TODO: clear marks first(?) |
633 | 752 for (var i = 0; i < marks.length; i++) { |
753 var mark = marks[i]; | |
643 | 754 if (data.zoomArea.containsPosition(mark)) { |
633 | 755 var mpos = data.imgTrafo.transform(mark); |
756 // create mark | |
757 var html = '<div class="mark">'+(i+1)+'</div>'; | |
758 var $mark = $(html); | |
759 $elem.append($mark); | |
654 | 760 $mark.offset({left : mpos.x, top : mpos.y}); |
633 | 761 } |
762 } | |
763 }; | |
655 | 764 |
658
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765 var renderBirdArea = function (data) { |
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766 var $ind = data.$birdDiv.find('div.birdzoom'); |
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767 var indRect = data.birdTrafo.transform(data.zoomArea); |
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768 // TODO: set the coordinates all in one call? |
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769 $ind.width(indRect.width); |
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770 $ind.height(indRect.height); |
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771 $ind.offset({ left : indRect.x, top : indRect.y }); |
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772 // TODO: how to override this style with a CSS stylesheet? |
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773 if (!$ind.css('border')) $ind.css('border', '2px solid #ff0000'); |
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774 } |
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775 |
647 | 776 // zooms by the given factor |
643 | 777 var zoomBy = function(data, factor) { |
778 var area = data.zoomArea; | |
779 var newarea = area.copy(); | |
780 // scale | |
781 newarea.width /= factor; | |
782 newarea.height /= factor; | |
783 // and recenter | |
784 newarea.x -= 0.5 * (newarea.width - area.width); | |
785 newarea.y -= 0.5 * (newarea.height - area.height); | |
786 newarea = MAX_ZOOMAREA.fit(newarea); | |
787 data.zoomArea = newarea; | |
644
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788 redisplay(data); |
643 | 789 }; |
790 | |
647 | 791 // add a mark where clicked |
792 var setMark = function (data) { | |
649 | 793 var $scaler = data.$scaler; |
647 | 794 console.debug("setmark"); |
795 // start event capturing | |
649 | 796 $scaler.one('click.digilib', function (evt) { |
647 | 797 // event handler adding a new mark |
798 console.debug("setmark.click evt=",evt); | |
799 var mpos = geom.position(evt.pageX, evt.pageY); | |
800 var pos = data.imgTrafo.invtransform(mpos); | |
801 data.marks.push(pos); | |
802 redisplay(data); | |
649 | 803 return false; // do we even get here? |
647 | 804 }); |
805 }; | |
654 | 806 |
807 var zoomArea = function(data) { | |
808 $elem = data.$elem; | |
809 $scaler = data.$scaler; | |
810 var pt1, pt2; | |
811 var $zoomDiv = $('<div class="zoomrect" style="display:none"/>'); | |
812 $elem.append($zoomDiv); | |
813 //var overlay = getElement("overlay"); | |
814 // use overlay div to avoid <img> mousemove problems | |
815 var picRect = geom.rectangle($scaler); | |
816 // FIX ME: is there a way to query the border width from CSS info? | |
817 // rect.x -= 2; // account for overlay borders | |
818 // rect.y -= 2; | |
819 //moveElement(overlay, picRect); | |
820 //showElement(overlay, true); | |
821 // start event capturing | |
822 //registerEvent("mousedown", overlay, zoomStart); | |
823 //registerEvent("mousedown", this.scalerImg, zoomStart); | |
824 | |
825 var zoomStart = function (evt) { | |
826 pt1 = geom.position(evt); | |
827 // setup and show zoom div | |
828 //moveElement(zoomdiv, Rectangle(pt1.x, pt1.y, 0, 0)); | |
829 $zoomDiv.offset({left : pt1.x, top : pt1.y}); | |
830 $zoomDiv.show(); | |
831 // register events | |
832 $elem.bind("mousemove.digilib", zoomMove); | |
833 $elem.bind("mouseup.digilib", zoomEnd); | |
834 return false; | |
835 }; | |
836 | |
837 // mouseup handler: end moving | |
838 var zoomEnd = function (evt) { | |
839 pt2 = geom.position(evt); | |
840 // assume a click and continue if the area is too small | |
841 var clickRect = geom.rectangle(pt1, pt2); | |
842 clickRect.normalize(); | |
843 console.debug("clickRect.getArea()=",clickRect.getArea()); | |
844 if (clickRect.getArea() <= 5) { | |
845 return false; | |
846 } | |
847 // hide zoom div | |
848 $zoomDiv.remove(); | |
849 // unregister events | |
850 $elem.unbind("mousemove.digilib", zoomMove); | |
851 $elem.unbind("mouseup.digilib", zoomEnd); | |
852 // clip and transform | |
853 clickRect.clipTo(picRect); | |
854 var area = data.imgTrafo.invtransform(clickRect); | |
855 data.zoomArea = area; | |
856 // zoomed is always fit | |
857 data.settings.ws = 1; | |
858 redisplay(data); | |
859 return false; | |
860 }; | |
861 | |
862 // mouse move handler | |
863 var zoomMove = function (evt) { | |
864 pt2 = geom.position(evt); | |
865 var rect = geom.rectangle(pt1, pt2); | |
866 rect.normalize(); | |
867 rect.clipTo(picRect); | |
868 // update zoom div | |
869 $zoomDiv.offset({left : rect.x, top : rect.y}); | |
870 $zoomDiv.width(rect.width).height(rect.height); | |
871 return false; | |
872 }; | |
873 | |
874 // bind start zoom handler | |
875 $scaler.one('mousedown.digilib', zoomStart); | |
876 }; | |
647 | 877 |
650 | 878 // sets a key to a value (relative values with +/- if relative=true) |
879 var setNumValue = function(settings, key, value) { | |
880 if (isNumber(value)) return settings[key] = value; | |
881 var sign = value.substring(0,1); | |
882 if (sign === '+' || sign === '-') { | |
883 if (settings[key] == null) { | |
651
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884 // this isn't perfect but still... |
650 | 885 settings[key] = 0; |
886 } | |
887 settings[key] = parseFloat(settings[key]) + parseFloat(value); | |
888 } else { | |
889 settings[key] = value; | |
890 } | |
891 return settings[key]; | |
892 }; | |
655 | 893 |
894 // auxiliary function (from old dllib.js) | |
895 isFullArea = function(data) { | |
896 var area = data.zoomArea; | |
897 return (area.width == 1.0) && (area.height == 1.0); | |
898 }; | |
899 | |
641 | 900 // auxiliary function (from Douglas Crockford, A.10) |
901 var isNumber = function isNumber(value) { | |
902 return typeof value === 'number' && isFinite(value); | |
903 }; | |
655 | 904 |
631 | 905 // auxiliary function to crop senseless precision |
906 var cropFloat = function (x) { | |
637 | 907 return parseInt(10000 * x, 10) / 10000; |
631 | 908 }; |
655 | 909 |
605 | 910 // hook plugin into jquery |
651
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911 $.fn.digilib = function(action) { |
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912 if (actions[action]) { |
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913 // call action on this with the remaining arguments (inserting data as first argument) |
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914 var $elem = $(this); |
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915 var data = $elem.data('digilib'); |
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916 var args = Array.prototype.slice.call(arguments, 1); |
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917 args.unshift(data); |
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918 return actions[action].apply(this, args); |
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919 } else if (typeof(action) === 'object' || !action) { |
634 | 920 // call init on this |
651
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921 return actions.init.apply(this, arguments); |
605 | 922 } else { |
651
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923 $.error( 'action ' + action + ' does not exist on jQuery.digilib' ); |
605 | 924 } |
925 }; | |
604 | 926 |
927 })(jQuery); |