Mercurial > hg > digilib-old
annotate client/digitallibrary/jquery/jquery.digilib.js @ 650:0c5930916d53 jquery
zoom to page width works now
added clop (= data.dlOpts) client side options parameter
also added infrastructure for mo Scaler options
author | robcast |
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date | Thu, 20 Jan 2011 19:04:56 +0100 |
parents | fd526464ae87 |
children | 694bdb86cbad |
rev | line source |
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604 | 1 /* |
2 * digilib jQuery plugin | |
3 * | |
4 */ | |
636 | 5 |
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 actions = { |
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 : { | |
33 onclick : "javascript:zoomArea()", | |
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 = { |
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148 // the root digilib element, for easy retrieval |
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149 'digilibRoot' : null, |
616 | 150 // version of this script |
635 | 151 'version' : 'jquery.digilib.js 0.9', |
616 | 152 // logo url |
153 'logoUrl' : '../img/digilib-logo-text1.png', | |
635 | 154 // homepage url (behind logo) |
155 'homeUrl' : 'http://digilib.berlios.de', | |
610 | 156 // base URL to Scaler servlet |
157 'scalerBaseUrl' : 'http://digilib.mpiwg-berlin.mpg.de/digitallibrary/servlet/Scaler', | |
158 // list of Scaler parameters | |
627 | 159 'scalerParamNames' : ['fn','pn','dw','dh','ww','wh','wx','wy','ws','mo', |
160 'rot','cont','brgt','rgbm','rgba','ddpi','ddpix','ddpiy'], | |
161 // Scaler parameter defaults | |
643 | 162 'pn' : 1, |
627 | 163 'ww' : 1.0, |
164 'wh' : 1.0, | |
165 'wx' : 0.0, | |
166 'wy' : 0.0, | |
167 'ws' : 1.0, | |
643 | 168 'mo' : '', |
169 'rot' : 0, | |
170 'cont' : 0, | |
171 'brgt' : 0, | |
172 'rgbm' : '0/0/0', | |
173 'rgba' : '0/0/0', | |
174 'ddpi' : null, | |
175 'ddpix' : null, | |
176 'ddpiy' : null, | |
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177 // list of digilib parameters |
650 | 178 'digilibParamNames' : ['fn','pn','ww','wh','wx','wy','ws','mo','rot','cont','brgt','rgbm','rgba','mk','clop'], |
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179 // digilib parameter defaults |
643 | 180 'mk' : '', |
650 | 181 'clop' : '', |
643 | 182 // mode of operation: |
183 // fullscreen = take parameters from page URL, keep state in page URL | |
184 // embedded = take parameters from Javascript options, keep state inside object | |
610 | 185 'interactionMode' : 'fullscreen', |
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186 // actions |
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187 'actions' : actions, |
612 | 188 // path to button images (must end with a slash) |
189 'buttonsImagePath' : '../greyskin/', | |
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190 // actions groups |
650 | 191 //'actionsStandard' : ["reference","zoomin","zoomout","zoomarea","zoomfull","pagewidth","back","fwd","page","bird","SEP","help","reset","options"], |
192 'actionsStandard' : ["reference","zoomin","zoomout","zoomarea","zoomfull","pagewidth","mark","delmark","back","fwd","page","bird","SEP","help","reset","options"], | |
618
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193 'actionsSpecial' : ["mark","delmark","hmir","vmir","rot","brgt","cont","rgb","quality","size","calibrationx","scale","SEP","options"], |
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194 'actionsCustom' : [], |
616 | 195 // is birdView shown? |
196 'isBirdDivVisible' : false, | |
615 | 197 // dimensions of bird's eye window |
639 | 198 'birdDivOptions' : {'dw' : 200, 'dh' : 200}, |
616 | 199 // is the "about" window shown? |
200 'isAboutDivVisible' : false | |
201 | |
610 | 202 }; |
605 | 203 |
608 | 204 // affine geometry classes |
205 var geom = dlGeometry(); | |
604 | 206 |
643 | 207 var MAX_ZOOMAREA = geom.rectangle(0, 0, 1, 1); |
208 | |
604 | 209 var methods = { |
608 | 210 // digilib initialization |
604 | 211 init : function(options) { |
608 | 212 // settings for this digilib instance are merged from defaults and options |
607 | 213 var settings = $.extend({}, defaults, options); |
636 | 214 var isFullscreen = settings.interactionMode === 'fullscreen'; |
215 var queryParams = {}; | |
607 | 216 if (isFullscreen) { |
217 queryParams = parseQueryParams(); | |
636 | 218 } |
604 | 219 return this.each(function() { |
605 | 220 var $elem = $(this); |
221 var data = $elem.data('digilib'); | |
607 | 222 var elemSettings; |
608 | 223 // if the plugin hasn't been initialized yet |
604 | 224 if (!data) { |
605 | 225 // merge query parameters |
607 | 226 if (isFullscreen) { |
227 elemSettings = $.extend({}, settings, queryParams); | |
228 } else { | |
229 elemSettings = $.extend({}, settings, parseImgParams($elem)); | |
634 | 230 } |
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231 // store $(this) element in the settings |
627 | 232 data = { |
647 | 233 $elem : $elem, |
636 | 234 settings : elemSettings, |
235 queryParams : queryParams | |
627 | 236 }; |
605 | 237 // store in data element |
627 | 238 $elem.data('digilib', data); |
604 | 239 } |
633 | 240 unpackParams(data); |
608 | 241 // create HTML structure |
627 | 242 setupScalerDiv(data); |
628
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243 setupButtons(data, 'actionsStandard'); |
639 | 244 // bird's eye view creation |
245 if (settings.isBirdDivVisible) { | |
641 | 246 setupBirdDiv(data); |
639 | 247 } |
627 | 248 // about window creation - TODO: could be deferred? restrict to only one item? |
628
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249 setupAboutDiv(data); |
604 | 250 }); |
251 }, | |
608 | 252 |
253 // clean up digilib | |
604 | 254 destroy : function() { |
255 return this.each(function(){ | |
636 | 256 var $elem = $(this); |
257 var data = $elem.data('digilib'); | |
604 | 258 // Namespacing FTW |
605 | 259 $(window).unbind('.digilib'); // unbinds all digilibs(?) |
604 | 260 data.digilib.remove(); |
636 | 261 $elem.removeData('digilib'); |
604 | 262 }); |
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263 }, |
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264 |
635 | 265 // show or hide the 'about' window |
266 showAboutDiv : function(show) { | |
636 | 267 var $elem = $(this); |
268 var data = $elem.data('digilib'); | |
635 | 269 data.settings.isAboutDivVisible = showDiv(data.settings.isAboutDivVisible, data.$aboutDiv, show); |
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270 }, |
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271 |
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272 // event handler: toggles the visibility of the bird's eye window |
635 | 273 showBirdDiv : function (show) { |
636 | 274 var $elem = $(this); |
275 var data = $elem.data('digilib'); | |
638 | 276 if (data.$birdDiv == null) { |
277 // no bird div -> create | |
278 setupBirdDiv(data); | |
279 } | |
635 | 280 data.settings.isBirdDivVisible = showDiv(data.settings.isBirdDivVisible, data.$birdDiv, show); |
623 | 281 }, |
282 | |
283 // goto given page nr (+/-: relative) | |
636 | 284 gotoPage : function (pageNr) { |
643 | 285 var $elem = $(this); |
636 | 286 var data = $elem.data('digilib'); |
287 var settings = data.settings; | |
623 | 288 var oldpn = settings.pn; |
624 | 289 var pn = setNumValue(settings, "pn", pageNr); |
290 if (pn == null) return false; // nothing happened | |
623 | 291 if (pn < 1) { |
292 alert("no such page (page number too low)"); | |
293 settings.pn = oldpn; | |
294 return false; | |
634 | 295 } |
623 | 296 if (settings.pt) { |
297 if (pn > settings.pt) { | |
298 alert("no such page (page number too high)"); | |
299 settings.pn = oldpn; | |
300 return false; | |
301 } | |
634 | 302 } |
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303 // reset mk and others(?) |
643 | 304 data.marks = []; |
305 data.zoomArea = MAX_ZOOMAREA; | |
636 | 306 // then reload |
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307 redisplay(data); |
643 | 308 }, |
309 | |
310 // zoom by a given factor | |
311 zoomBy : function (factor) { | |
312 var $elem = $(this); | |
313 var data = $elem.data('digilib'); | |
314 zoomBy(data, factor); | |
647 | 315 }, |
316 | |
317 // zoom out to full page | |
650 | 318 zoomFull : function (mode) { |
647 | 319 var $elem = $(this); |
320 var data = $elem.data('digilib'); | |
321 data.zoomArea = MAX_ZOOMAREA; | |
650 | 322 if (mode === 'width') { |
323 data.dlOpts.fitwidth = 1; | |
324 delete data.dlOpts.fitheight; | |
325 } else if (mode === 'height') { | |
326 data.dlOpts.fitheight = 1; | |
327 delete data.dlOpts.fitwidth; | |
328 } else { | |
329 delete data.dlOpts.fitwidth; | |
330 delete data.dlOpts.fitheight; | |
331 } | |
647 | 332 redisplay(data); |
333 }, | |
334 | |
335 // set a mark by clicking (or giving a position) | |
336 setMark : function (mpos) { | |
337 var $elem = $(this); | |
338 var data = $elem.data('digilib'); | |
339 if (mpos == null) { | |
340 // interactive | |
341 setMark(data); | |
342 } else { | |
343 // use position | |
344 data.marks.push(pos); | |
345 redisplay(data); | |
346 } | |
650 | 347 }, |
348 | |
349 // remove the last mark | |
350 removeMark : function () { | |
351 var $elem = $(this); | |
352 var data = $elem.data('digilib'); | |
353 data.marks.pop(); | |
354 redisplay(data); | |
604 | 355 } |
650 | 356 |
605 | 357 }; |
604 | 358 |
608 | 359 // returns parameters from page url |
607 | 360 var parseQueryParams = function() { |
636 | 361 return parseQueryString(window.location.search.slice(1)); |
362 }; | |
607 | 363 |
636 | 364 // returns parameters from embedded img-element |
607 | 365 var parseImgParams = function($elem) { |
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366 var src = $elem.find('img').first().attr('src'); |
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367 if (!src) { |
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368 return null; |
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369 } |
607 | 370 var pos = src.indexOf('?'); |
371 var query = (pos < 0) ? '' : src.substring(pos + 1); | |
372 var scalerUrl = src.substring(0, pos); | |
627 | 373 var params = parseQueryString(query); |
374 params.scalerBaseUrl = scalerUrl; | |
375 return params; | |
636 | 376 }; |
607 | 377 |
608 | 378 // parses query parameter string into parameter object |
607 | 379 var parseQueryString = function(query) { |
380 var pairs = query.split("&"); | |
627 | 381 var params = {}; |
636 | 382 //var keys = []; |
607 | 383 for (var i = 0; i < pairs.length; i++) { |
384 var pair = pairs[i].split("="); | |
385 if (pair.length === 2) { | |
627 | 386 params[pair[0]] = pair[1]; |
636 | 387 //keys.push(pair[0]); |
634 | 388 } |
636 | 389 } |
627 | 390 return params; |
636 | 391 }; |
604 | 392 |
643 | 393 // returns a query string from key names from a parameter hash (ignoring if the same value is in defaults) |
394 var getParamString = function (settings, keys, defaults) { | |
615 | 395 var paramString = ''; |
650 | 396 var nx = false; |
615 | 397 for (i = 0; i < keys.length; ++i) { |
398 var key = keys[i]; | |
643 | 399 if ((settings[key] != null) && ((defaults == null) || (settings[key] !== defaults[key]))) { |
615 | 400 // first param gets no '&' |
650 | 401 if (nx) { |
402 paramString += '&'; | |
403 } else { | |
404 nx = true; | |
405 } | |
615 | 406 // add parm=val |
407 paramString += key + '=' + settings[key]; | |
643 | 408 } |
615 | 409 } |
410 return paramString; | |
631 | 411 }; |
412 | |
636 | 413 // returns URL and query string for Scaler |
414 var getScalerUrl = function (data) { | |
415 var settings = data.settings; | |
416 var keys = settings.scalerParamNames; | |
643 | 417 var queryString = getParamString(settings, keys, defaults); |
636 | 418 var url = settings.scalerBaseUrl + '?' + queryString; |
419 return url; | |
420 }; | |
421 | |
422 // returns URL and query string for current digilib | |
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423 var getDigilibUrl = function (data) { |
643 | 424 packParams(data); |
636 | 425 var settings = data.settings; |
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426 var queryString = getParamString(settings, settings.digilibParamNames, defaults); |
636 | 427 var url = window.location.toString(); |
428 var pos = url.indexOf('?'); | |
429 var baseUrl = url.substring(0, pos); | |
430 var newurl = baseUrl + '?' + queryString; | |
431 return newurl; | |
432 }; | |
433 | |
631 | 434 // processes some parameters into objects and stuff |
435 var unpackParams = function (data) { | |
436 var settings = data.settings; | |
636 | 437 // zoom area |
631 | 438 var zoomArea = geom.rectangle(settings.wx, settings.wy, settings.ww, settings.wh); |
643 | 439 data.zoomArea = zoomArea; |
636 | 440 // marks |
631 | 441 var marks = []; |
650 | 442 if (settings.mk) { |
443 var mk = settings.mk; | |
444 if (mk.indexOf(";") >= 0) { | |
445 var pa = mk.split(";"); // old format with ";" | |
446 } else { | |
447 var pa = mk.split(","); // new format | |
448 } | |
449 for (var i = 0; i < pa.length ; i++) { | |
450 var pos = pa[i].split("/"); | |
451 if (pos.length > 1) { | |
452 marks.push(geom.position(pos[0], pos[1])); | |
453 } | |
633 | 454 } |
631 | 455 } |
643 | 456 data.marks = marks; |
650 | 457 // mo (Scaler flags) |
458 var flags = {}; | |
459 if (settings.mo) { | |
460 var pa = settings.mo.split(","); | |
461 for (var i = 0; i < pa.length ; i++) { | |
462 flags[pa[i]] = pa[i]; | |
463 } | |
464 } | |
465 data.scalerFlags = flags; | |
466 // clop (digilib options) | |
467 var opts = {}; | |
468 if (settings.clop) { | |
469 var pa = settings.clop.split(","); | |
470 for (var i = 0; i < pa.length ; i++) { | |
471 opts[pa[i]] = pa[i]; | |
472 } | |
473 } | |
474 data.dlOpts = opts; | |
631 | 475 }; |
476 | |
477 // put objects back into parameters | |
478 var packParams = function (data) { | |
479 var settings = data.settings; | |
636 | 480 // zoom area |
643 | 481 if (data.zoomArea) { |
647 | 482 settings.wx = cropFloat(data.zoomArea.x); |
483 settings.wy = cropFloat(data.zoomArea.y); | |
484 settings.ww = cropFloat(data.zoomArea.width); | |
485 settings.wh = cropFloat(data.zoomArea.height); | |
631 | 486 } |
636 | 487 // marks |
643 | 488 if (data.marks) { |
650 | 489 settings.mk = ''; |
643 | 490 for (var i = 0; i < data.marks.length; i++) { |
650 | 491 if (i) { |
492 settings.mk += ','; | |
493 } | |
494 settings.mk += cropFloat(data.marks[i].x).toString() + '/' + cropFloat(data.marks[i].y).toString(); | |
631 | 495 } |
650 | 496 } |
497 // Scaler flags | |
498 if (data.scalerFlags) { | |
499 var mo = ''; | |
500 for (var f in data.scalerFlags) { | |
501 if (mo) { | |
502 mo += ','; | |
503 } | |
504 mo += f; | |
505 } | |
506 settings.mo = mo; | |
507 } | |
508 // digilib options | |
509 if (data.dlOpts) { | |
510 var clop = ''; | |
511 for (var o in data.dlOpts) { | |
512 if (clop) { | |
513 clop += ','; | |
514 } | |
515 clop += o; | |
516 } | |
517 settings.clop = clop; | |
631 | 518 } |
519 }; | |
520 | |
609 | 521 // returns maximum size for scaler img in fullscreen mode |
522 var getFullscreenImgSize = function($elem) { | |
523 var winH = $(window).height(); | |
524 var winW = $(window).width(); | |
525 // TODO: account for borders? | |
526 return geom.size(winW, winH); | |
608 | 527 }; |
528 | |
622 | 529 // (re)load the img from a new scaler URL |
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530 var redisplay = function (data) { |
636 | 531 var settings = data.settings; |
532 if (settings.interactionMode === 'fullscreen') { | |
533 // update location.href (browser URL) in fullscreen mode | |
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534 var url = getDigilibUrl(data); |
636 | 535 var history = window.history; |
536 if (typeof(history.pushState) === 'function') { | |
537 console.debug("we could modify history, but we don't..."); | |
538 } | |
539 window.location = url; | |
540 } else { | |
541 // embedded mode -- just change img src | |
542 var url = getScalerUrl(data); | |
543 data.$img.attr('src', url); | |
544 } | |
622 | 545 }; |
546 | |
608 | 547 // creates HTML structure for digilib in elem |
627 | 548 var setupScalerDiv = function (data) { |
549 var settings = data.settings; | |
647 | 550 var $elem = data.$elem; |
623 | 551 var $img; |
608 | 552 if (settings.interactionMode === 'fullscreen') { |
609 | 553 // fullscreen |
554 var imgSize = getFullscreenImgSize($elem); | |
650 | 555 // fitwidth/height omits destination height/width |
556 if (data.dlOpts['fitheight'] == null) { | |
557 settings.dw = imgSize.width; | |
558 } | |
559 if (data.dlOpts['fitwidth'] == null) { | |
560 settings.dh = imgSize.height; | |
561 } | |
613
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562 $img = $('<img/>'); |
636 | 563 var scalerUrl = getScalerUrl(data); |
564 $img.attr('src', scalerUrl); | |
609 | 565 } else { |
613
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566 // embedded mode -- try to keep img tag |
623 | 567 $img = $elem.find('img'); |
613
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568 if ($img.length > 0) { |
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569 console.debug("img detach:",$img); |
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570 $img.detach(); |
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571 } else { |
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572 $img = $('<img/>'); |
636 | 573 var scalerUrl = getScalerUrl(data); |
574 $img.attr('src', scalerUrl); | |
613
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575 } |
608 | 576 } |
613
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577 // create new html |
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578 $elem.empty(); // TODO: should we keep stuff for customization? |
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579 var $scaler = $('<div class="scaler"/>'); |
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580 $elem.append($scaler); |
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581 $scaler.append($img); |
622 | 582 $img.addClass('pic'); |
649 | 583 data.$scaler = $scaler; |
636 | 584 data.$img = $img; |
585 $img.load(scalerImgLoadedHandler(data)); | |
608 | 586 }; |
615 | 587 |
610 | 588 // creates HTML structure for buttons in elem |
628
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589 var setupButtons = function (data, actionGroup) { |
647 | 590 var $elem = data.$elem; |
628
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591 var settings = data.settings; |
610 | 592 if (settings.interactionMode === 'fullscreen') { |
593 // fullscreen -- create new | |
612 | 594 var $buttonsDiv = $('<div class="buttons"></div>'); |
595 $elem.append($buttonsDiv); | |
618
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596 var actionNames = settings[actionGroup]; |
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597 for (var i = 0; i < actionNames.length; i++) { |
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598 var actionName = actionNames[i]; |
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599 var actionSettings = settings.actions[actionName]; |
612 | 600 // construct the button html |
601 var $button = $('<div class="button"></div>'); | |
602 var $a = $('<a/>'); | |
614 | 603 var $img = $('<img class="button"/>'); |
612 | 604 $buttonsDiv.append($button); |
605 $button.append($a); | |
606 $a.append($img); | |
607 // add attributes and bindings | |
618
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608 $button.attr('title', actionSettings.tooltip); |
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609 $button.addClass('button-' + actionName); |
635 | 610 // create handler for the buttons |
649 | 611 $a.bind('click.digilib', (function () { |
635 | 612 // we create a new closure to capture the value of method |
613 var method = actionSettings.onclick; | |
619 | 614 if ($.isArray(method)) { |
635 | 615 // the handler function calls digilib with method and parameters |
649 | 616 return function (evt) { |
617 console.debug('click method=', method, ' evt=', evt); | |
635 | 618 $elem.digilib.apply($elem, method); |
649 | 619 return false; |
619 | 620 }; |
635 | 621 } else { |
622 // the handler function calls digilib with method | |
649 | 623 return function (evt) { |
624 console.debug('click method=', method, ' evt=', evt); | |
635 | 625 $elem.digilib(method); |
649 | 626 return false; |
635 | 627 }; |
628 } | |
629 })()); | |
618
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630 $img.attr('src', settings.buttonsImagePath + actionSettings.img); |
637 | 631 } |
611 | 632 } |
612 | 633 return $buttonsDiv; |
610 | 634 }; |
615 | 635 |
636 // creates HTML structure for the bird's eye view in elem | |
638 | 637 var setupBirdDiv = function (data) { |
647 | 638 var $elem = data.$elem; |
628
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639 var settings = data.settings; |
615 | 640 // use only the relevant parameters |
641 var keys = ['fn','pn','dw','dh']; | |
639 | 642 var birdSettings = $.extend({}, settings, settings.birdDivOptions); |
628
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643 var birdUrl = settings.scalerBaseUrl + '?' + getParamString(birdSettings, keys); |
615 | 644 // the bird's eye div |
625 | 645 var $birdviewDiv = $('<div class="birdview" style="display:none"/>'); |
615 | 646 // the detail indicator frame |
647 var $birdzoomDiv = $('<div class="birdzoom"/>'); | |
648 // the small image | |
649 var $birdImg = $('<img class="birdimg"/>'); | |
650 $elem.append($birdviewDiv); | |
651 $birdviewDiv.append($birdzoomDiv); | |
652 $birdviewDiv.append($birdImg); | |
653 $birdImg.attr('src', birdUrl); | |
640
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654 if (data.settings.isBirdDivVisible) { |
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655 $birdviewDiv.fadeIn(); |
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656 } |
635 | 657 data.$birdDiv = $birdviewDiv; |
640
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658 }; |
615 | 659 |
625 | 660 // creates HTML structure for the about view in elem |
628
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661 var setupAboutDiv = function (data) { |
647 | 662 var $elem = data.$elem; |
628
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663 var settings = data.settings; |
625 | 664 var $aboutDiv = $('<div class="about" style="display:none"/>'); |
616 | 665 var $header = $('<p>Digilib Graphic Viewer</p>'); |
666 var $link = $('<a/>'); | |
667 var $logo = $('<img class="logo" title="digilib"/>'); | |
668 var $content = $('<p/>'); | |
669 $elem.append($aboutDiv); | |
670 $aboutDiv.append($header); | |
671 $aboutDiv.append($link); | |
672 $aboutDiv.append($content); | |
673 $link.append($logo); | |
674 $logo.attr('src', settings.logoUrl); | |
635 | 675 $link.attr('href', settings.homeUrl); |
616 | 676 $content.text('Version: ' + settings.version); |
635 | 677 // click hides |
649 | 678 $aboutDiv.bind('click.digilib', function () { |
646 | 679 settings.isAboutDivVisible = showDiv(settings.isAboutDivVisible, $aboutDiv, 0); |
649 | 680 return false; |
681 }); | |
635 | 682 data.$aboutDiv = $aboutDiv; |
634 | 683 }; |
684 | |
635 | 685 // shows some window e.g. 'about' (toggle visibility if show is null) |
686 var showDiv = function (isVisible, $div, show) { | |
645 | 687 if (show == null) { |
635 | 688 // toggle visibility |
689 isVisible = !isVisible; | |
690 } else { | |
691 // set visibility | |
692 isVisible = show; | |
693 } | |
694 if (isVisible) { | |
695 $div.fadeIn(); | |
696 } else { | |
697 $div.fadeOut(); | |
698 } | |
699 return isVisible; | |
634 | 700 }; |
616 | 701 |
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702 // returns function for load event of scaler img |
636 | 703 var scalerImgLoadedHandler = function (data) { |
627 | 704 var settings = data.settings; |
647 | 705 var $elem = data.$elem; |
636 | 706 var $img = data.$img; |
627 | 707 |
633 | 708 return function () { |
627 | 709 console.debug("img loaded! this=", this, " data=", data); |
643 | 710 var area = data.zoomArea; |
627 | 711 // create Transform from current area and picsize |
712 var picpos = $img.offset(); | |
713 var picrect = geom.rectangle(picpos.left, picpos.top, $img.width(), $img.height()); | |
714 var trafo = geom.transform(); | |
715 // subtract area offset and size | |
647 | 716 trafo.concat(trafo.getTranslation(geom.position(- area.x, - area.y))); |
627 | 717 trafo.concat(trafo.getScale(geom.size(1/area.width, 1/area.height))); |
718 // scale to screen size | |
719 trafo.concat(trafo.getScale(picrect)); | |
720 trafo.concat(trafo.getTranslation(picrect)); | |
721 data.imgTrafo = trafo; | |
722 // display marks | |
633 | 723 renderMarks(data); |
627 | 724 //digilib.showArrows(); // show arrow overlays for zoom navigation |
641 | 725 // done -- hide about div --- |
726 // --- why? This only leads to suprise effects when displayed programmatically | |
727 // settings.isAboutDivVisible = showDiv(null, data.$aboutDiv, 0); | |
613
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728 }; |
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729 }; |
633 | 730 |
731 // place marks on the image | |
732 var renderMarks = function (data) { | |
647 | 733 var $elem = data.$elem; |
643 | 734 var marks = data.marks; |
649 | 735 // TODO: clear marks first(?) |
633 | 736 for (var i = 0; i < marks.length; i++) { |
737 var mark = marks[i]; | |
643 | 738 if (data.zoomArea.containsPosition(mark)) { |
633 | 739 var mpos = data.imgTrafo.transform(mark); |
740 // create mark | |
741 var html = '<div class="mark">'+(i+1)+'</div>'; | |
742 var $mark = $(html); | |
743 $elem.append($mark); | |
744 $mark.offset({ left : mpos.x, top : mpos.y}); | |
745 } | |
746 } | |
747 }; | |
631 | 748 |
647 | 749 // zooms by the given factor |
643 | 750 var zoomBy = function(data, factor) { |
751 var area = data.zoomArea; | |
752 var newarea = area.copy(); | |
753 // scale | |
754 newarea.width /= factor; | |
755 newarea.height /= factor; | |
756 // and recenter | |
757 newarea.x -= 0.5 * (newarea.width - area.width); | |
758 newarea.y -= 0.5 * (newarea.height - area.height); | |
759 newarea = MAX_ZOOMAREA.fit(newarea); | |
760 data.zoomArea = newarea; | |
644
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761 redisplay(data); |
643 | 762 }; |
763 | |
647 | 764 // add a mark where clicked |
765 var setMark = function (data) { | |
649 | 766 var $scaler = data.$scaler; |
647 | 767 console.debug("setmark"); |
768 // start event capturing | |
649 | 769 $scaler.one('click.digilib', function (evt) { |
647 | 770 // event handler adding a new mark |
771 console.debug("setmark.click evt=",evt); | |
772 var mpos = geom.position(evt.pageX, evt.pageY); | |
773 var pos = data.imgTrafo.invtransform(mpos); | |
774 data.marks.push(pos); | |
775 redisplay(data); | |
649 | 776 return false; // do we even get here? |
647 | 777 }); |
778 }; | |
779 | |
650 | 780 // sets a key to a value (relative values with +/- if relative=true) |
781 var setNumValue = function(settings, key, value) { | |
782 if (isNumber(value)) return settings[key] = value; | |
783 var sign = value.substring(0,1); | |
784 if (sign === '+' || sign === '-') { | |
785 if (settings[key] == null) { | |
786 // this doesn't make much sense but still... | |
787 settings[key] = 0; | |
788 } | |
789 settings[key] = parseFloat(settings[key]) + parseFloat(value); | |
790 } else { | |
791 settings[key] = value; | |
792 } | |
793 return settings[key]; | |
794 }; | |
795 | |
641 | 796 // auxiliary function (from Douglas Crockford, A.10) |
797 var isNumber = function isNumber(value) { | |
798 return typeof value === 'number' && isFinite(value); | |
799 }; | |
800 | |
631 | 801 // auxiliary function to crop senseless precision |
802 var cropFloat = function (x) { | |
637 | 803 return parseInt(10000 * x, 10) / 10000; |
631 | 804 }; |
636 | 805 |
605 | 806 // hook plugin into jquery |
807 $.fn.digilib = function(method) { | |
808 if (methods[method]) { | |
634 | 809 // call method on this with the remaining arguments |
605 | 810 return methods[method].apply(this, Array.prototype.slice.call(arguments, 1)); |
811 } else if (typeof(method) === 'object' || !method) { | |
634 | 812 // call init on this |
605 | 813 return methods.init.apply(this, arguments); |
814 } else { | |
634 | 815 $.error( 'Method ' + method + ' does not exist on jQuery.digilib' ); |
605 | 816 } |
817 }; | |
604 | 818 |
819 })(jQuery); |