Mercurial > hg > digilib
annotate client/digitallibrary/jquery/jquery.digilib.js @ 647:a2aadf44a454 jquery
zoomarea works now
added rectangle and position constructors that take jQuery and event objects
fixed bug in rectangle.contains
author | robcast |
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date | Fri, 21 Jan 2011 00:00:08 +0100 |
parents | f18fac852d93 |
children | e328273b7ef4 |
rev | line source |
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597 | 1 /* |
2 * digilib jQuery plugin | |
3 * | |
4 */ | |
629 | 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 } | |
597 | 14 |
15 (function($) { | |
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16 var buttons = { |
603 | 17 reference : { |
18 onclick : "javascript:getRefWin()", | |
19 tooltip : "get a reference URL", | |
20 img : "reference.png" | |
21 }, | |
22 zoomin : { | |
636 | 23 onclick : ["zoomBy", 1.4], |
603 | 24 tooltip : "zoom in", |
25 img : "zoom-in.png" | |
26 }, | |
27 zoomout : { | |
636 | 28 onclick : ["zoomBy", 0.7], |
603 | 29 tooltip : "zoom out", |
30 img : "zoom-out.png" | |
31 }, | |
32 zoomarea : { | |
647 | 33 onclick : "zoomArea", |
603 | 34 tooltip : "zoom area", |
35 img : "zoom-area.png" | |
36 }, | |
37 zoomfull : { | |
643 | 38 onclick : "zoomFull", |
603 | 39 tooltip : "view the whole image", |
40 img : "zoom-full.png" | |
41 }, | |
42 pagewidth : { | |
643 | 43 onclick : ["zoomFull", "width"], |
603 | 44 tooltip : "page width", |
45 img : "pagewidth.png" | |
46 }, | |
47 back : { | |
616 | 48 onclick : ["gotoPage", "-1"], |
603 | 49 tooltip : "goto previous image", |
50 img : "back.png" | |
51 }, | |
52 fwd : { | |
616 | 53 onclick : ["gotoPage", "+1"], |
603 | 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 : { | |
628 | 63 onclick : "showBirdDiv", |
603 | 64 tooltip : "show bird's eye view", |
65 img : "birds-eye.png" | |
66 }, | |
67 help : { | |
628 | 68 onclick : "showAboutDiv", |
603 | 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 : { | |
640 | 78 onclick : "setMark", |
603 | 79 tooltip : "set a mark", |
80 img : "mark.png" | |
81 }, | |
82 delmark : { | |
643 | 83 onclick : "removeMark", |
603 | 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 |
598 | 147 var defaults = { |
609 | 148 // version of this script |
628 | 149 'version' : 'jquery.digilib.js 0.9', |
609 | 150 // logo url |
151 'logoUrl' : '../img/digilib-logo-text1.png', | |
628 | 152 // homepage url (behind logo) |
153 'homeUrl' : 'http://digilib.berlios.de', | |
603 | 154 // base URL to Scaler servlet |
645 | 155 'scalerBaseUrl' : null, |
603 | 156 // list of Scaler parameters |
620 | 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 | |
636 | 160 'pn' : 1, |
620 | 161 'ww' : 1.0, |
162 'wh' : 1.0, | |
163 'wx' : 0.0, | |
164 'wy' : 0.0, | |
165 'ws' : 1.0, | |
636 | 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 |
643 | 176 'digilibParamNames' : ['fn','pn','ww','wh','wx','wy','ws','mo','rot','cont','brgt','rgbm','rgba','mk','clop'], |
637
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177 // digilib parameter defaults |
636 | 178 'mk' : '', |
643 | 179 'clop' : '', |
636 | 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 | |
603 | 183 'interactionMode' : 'fullscreen', |
644
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184 // buttons |
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185 'buttons' : buttons, |
605 | 186 // path to button images (must end with a slash) |
187 'buttonsImagePath' : '../greyskin/', | |
645 | 188 // button groups |
644
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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' : [], |
609 | 193 // is birdView shown? |
194 'isBirdDivVisible' : false, | |
608 | 195 // dimensions of bird's eye window |
632 | 196 'birdDivOptions' : {'dw' : 200, 'dh' : 200}, |
609 | 197 // is the "about" window shown? |
198 'isAboutDivVisible' : false | |
199 | |
603 | 200 }; |
598 | 201 |
601 | 202 // affine geometry classes |
203 var geom = dlGeometry(); | |
597 | 204 |
636 | 205 var MAX_ZOOMAREA = geom.rectangle(0, 0, 1, 1); |
206 | |
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207 var actions = { |
647 | 208 // init: digilib initialization |
597 | 209 init : function(options) { |
601 | 210 // settings for this digilib instance are merged from defaults and options |
600 | 211 var settings = $.extend({}, defaults, options); |
629 | 212 var isFullscreen = settings.interactionMode === 'fullscreen'; |
213 var queryParams = {}; | |
600 | 214 if (isFullscreen) { |
215 queryParams = parseQueryParams(); | |
645 | 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 } | |
629 | 229 } |
597 | 230 return this.each(function() { |
598 | 231 var $elem = $(this); |
232 var data = $elem.data('digilib'); | |
600 | 233 var elemSettings; |
601 | 234 // if the plugin hasn't been initialized yet |
597 | 235 if (!data) { |
598 | 236 // merge query parameters |
600 | 237 if (isFullscreen) { |
238 elemSettings = $.extend({}, settings, queryParams); | |
239 } else { | |
240 elemSettings = $.extend({}, settings, parseImgParams($elem)); | |
627 | 241 } |
610
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242 // store $(this) element in the settings |
620 | 243 data = { |
640 | 244 $elem : $elem, |
629 | 245 settings : elemSettings, |
246 queryParams : queryParams | |
620 | 247 }; |
598 | 248 // store in data element |
620 | 249 $elem.data('digilib', data); |
597 | 250 } |
626 | 251 unpackParams(data); |
601 | 252 // create HTML structure |
620 | 253 setupScalerDiv(data); |
644
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254 setupButtons(data, 'buttonsStandard'); |
632 | 255 // bird's eye view creation |
256 if (settings.isBirdDivVisible) { | |
634 | 257 setupBirdDiv(data); |
632 | 258 } |
620 | 259 // about window creation - TODO: could be deferred? restrict to only one item? |
621
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260 setupAboutDiv(data); |
597 | 261 }); |
262 }, | |
601 | 263 |
647 | 264 // destroy: clean up digilib |
644
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265 destroy : function(data) { |
597 | 266 return this.each(function(){ |
629 | 267 var $elem = $(this); |
647 | 268 $(window).unbind('.digilib'); // unbind all digilibs(?) |
597 | 269 data.digilib.remove(); |
629 | 270 $elem.removeData('digilib'); |
597 | 271 }); |
610
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272 }, |
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273 |
628 | 274 // show or hide the 'about' window |
644
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275 showAboutDiv : function(data, show) { |
628 | 276 data.settings.isAboutDivVisible = showDiv(data.settings.isAboutDivVisible, data.$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) { |
631 | 281 if (data.$birdDiv == null) { |
282 // no bird div -> create | |
283 setupBirdDiv(data); | |
284 } | |
628 | 285 data.settings.isBirdDivVisible = showDiv(data.settings.isBirdDivVisible, data.$birdDiv, show); |
616 | 286 }, |
287 | |
288 // goto given page nr (+/-: relative) | |
644
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289 gotoPage : function (data, pageNr) { |
629 | 290 var settings = data.settings; |
616 | 291 var oldpn = settings.pn; |
617 | 292 var pn = setNumValue(settings, "pn", pageNr); |
293 if (pn == null) return false; // nothing happened | |
616 | 294 if (pn < 1) { |
295 alert("no such page (page number too low)"); | |
296 settings.pn = oldpn; | |
297 return false; | |
627 | 298 } |
616 | 299 if (settings.pt) { |
300 if (pn > settings.pt) { | |
301 alert("no such page (page number too high)"); | |
302 settings.pn = oldpn; | |
303 return false; | |
304 } | |
627 | 305 } |
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306 // reset mk and others(?) |
636 | 307 data.marks = []; |
308 data.zoomArea = MAX_ZOOMAREA; | |
629 | 309 // then reload |
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310 redisplay(data); |
636 | 311 }, |
312 | |
313 // zoom by a given factor | |
644
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314 zoomBy : function (data, factor) { |
636 | 315 zoomBy(data, factor); |
640 | 316 }, |
317 | |
647 | 318 // zoom interactively |
319 zoomArea : function (data) { | |
320 zoomArea(data); | |
321 }, | |
322 | |
640 | 323 // zoom out to full page |
644
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324 zoomFull : function (data, mode) { |
640 | 325 data.zoomArea = MAX_ZOOMAREA; |
643 | 326 if (mode === 'width') { |
327 data.dlOpts.fitwidth = 1; | |
328 delete data.dlOpts.fitheight; | |
329 } else if (mode === 'height') { | |
330 data.dlOpts.fitheight = 1; | |
331 delete data.dlOpts.fitwidth; | |
332 } else { | |
333 delete data.dlOpts.fitwidth; | |
334 delete data.dlOpts.fitheight; | |
335 } | |
640 | 336 redisplay(data); |
337 }, | |
338 | |
339 // set a mark by clicking (or giving a position) | |
644
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340 setMark : function (data, mpos) { |
640 | 341 if (mpos == null) { |
342 // interactive | |
343 setMark(data); | |
344 } else { | |
345 // use position | |
346 data.marks.push(pos); | |
347 redisplay(data); | |
348 } | |
643 | 349 }, |
350 | |
351 // remove the last mark | |
644
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352 removeMark : function (data) { |
643 | 353 data.marks.pop(); |
354 redisplay(data); | |
597 | 355 } |
643 | 356 |
598 | 357 }; |
597 | 358 |
601 | 359 // returns parameters from page url |
600 | 360 var parseQueryParams = function() { |
629 | 361 return parseQueryString(window.location.search.slice(1)); |
362 }; | |
600 | 363 |
629 | 364 // returns parameters from embedded img-element |
600 | 365 var parseImgParams = function($elem) { |
606
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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 } |
600 | 370 var pos = src.indexOf('?'); |
371 var query = (pos < 0) ? '' : src.substring(pos + 1); | |
372 var scalerUrl = src.substring(0, pos); | |
620 | 373 var params = parseQueryString(query); |
374 params.scalerBaseUrl = scalerUrl; | |
375 return params; | |
629 | 376 }; |
600 | 377 |
601 | 378 // parses query parameter string into parameter object |
600 | 379 var parseQueryString = function(query) { |
380 var pairs = query.split("&"); | |
620 | 381 var params = {}; |
629 | 382 //var keys = []; |
600 | 383 for (var i = 0; i < pairs.length; i++) { |
384 var pair = pairs[i].split("="); | |
385 if (pair.length === 2) { | |
620 | 386 params[pair[0]] = pair[1]; |
629 | 387 //keys.push(pair[0]); |
627 | 388 } |
629 | 389 } |
620 | 390 return params; |
629 | 391 }; |
597 | 392 |
636 | 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) { | |
608 | 395 var paramString = ''; |
643 | 396 var nx = false; |
608 | 397 for (i = 0; i < keys.length; ++i) { |
398 var key = keys[i]; | |
636 | 399 if ((settings[key] != null) && ((defaults == null) || (settings[key] !== defaults[key]))) { |
608 | 400 // first param gets no '&' |
643 | 401 if (nx) { |
402 paramString += '&'; | |
403 } else { | |
404 nx = true; | |
405 } | |
608 | 406 // add parm=val |
407 paramString += key + '=' + settings[key]; | |
636 | 408 } |
608 | 409 } |
410 return paramString; | |
624 | 411 }; |
412 | |
629 | 413 // returns URL and query string for Scaler |
414 var getScalerUrl = function (data) { | |
646 | 415 var settings = data.settings; |
645 | 416 if (settings.scalerBaseUrl == null) { |
417 alert("ERROR: URL of digilib Scaler servlet missing!"); | |
418 } | |
629 | 419 var keys = settings.scalerParamNames; |
636 | 420 var queryString = getParamString(settings, keys, defaults); |
629 | 421 var url = settings.scalerBaseUrl + '?' + queryString; |
422 return url; | |
423 }; | |
424 | |
425 // returns URL and query string for current digilib | |
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426 var getDigilibUrl = function (data) { |
636 | 427 packParams(data); |
629 | 428 var settings = data.settings; |
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429 var queryString = getParamString(settings, settings.digilibParamNames, defaults); |
629 | 430 var url = window.location.toString(); |
431 var pos = url.indexOf('?'); | |
432 var baseUrl = url.substring(0, pos); | |
433 var newurl = baseUrl + '?' + queryString; | |
434 return newurl; | |
435 }; | |
436 | |
624 | 437 // processes some parameters into objects and stuff |
438 var unpackParams = function (data) { | |
439 var settings = data.settings; | |
629 | 440 // zoom area |
624 | 441 var zoomArea = geom.rectangle(settings.wx, settings.wy, settings.ww, settings.wh); |
636 | 442 data.zoomArea = zoomArea; |
629 | 443 // marks |
624 | 444 var marks = []; |
643 | 445 if (settings.mk) { |
446 var mk = settings.mk; | |
447 if (mk.indexOf(";") >= 0) { | |
448 var pa = mk.split(";"); // old format with ";" | |
449 } else { | |
450 var pa = mk.split(","); // new format | |
451 } | |
452 for (var i = 0; i < pa.length ; i++) { | |
453 var pos = pa[i].split("/"); | |
454 if (pos.length > 1) { | |
455 marks.push(geom.position(pos[0], pos[1])); | |
456 } | |
626 | 457 } |
624 | 458 } |
636 | 459 data.marks = marks; |
643 | 460 // mo (Scaler flags) |
461 var flags = {}; | |
462 if (settings.mo) { | |
463 var pa = settings.mo.split(","); | |
464 for (var i = 0; i < pa.length ; i++) { | |
465 flags[pa[i]] = pa[i]; | |
466 } | |
467 } | |
468 data.scalerFlags = flags; | |
469 // clop (digilib options) | |
470 var opts = {}; | |
471 if (settings.clop) { | |
472 var pa = settings.clop.split(","); | |
473 for (var i = 0; i < pa.length ; i++) { | |
474 opts[pa[i]] = pa[i]; | |
475 } | |
476 } | |
477 data.dlOpts = opts; | |
624 | 478 }; |
479 | |
480 // put objects back into parameters | |
481 var packParams = function (data) { | |
482 var settings = data.settings; | |
629 | 483 // zoom area |
636 | 484 if (data.zoomArea) { |
640 | 485 settings.wx = cropFloat(data.zoomArea.x); |
486 settings.wy = cropFloat(data.zoomArea.y); | |
487 settings.ww = cropFloat(data.zoomArea.width); | |
488 settings.wh = cropFloat(data.zoomArea.height); | |
624 | 489 } |
629 | 490 // marks |
636 | 491 if (data.marks) { |
643 | 492 settings.mk = ''; |
636 | 493 for (var i = 0; i < data.marks.length; i++) { |
643 | 494 if (i) { |
495 settings.mk += ','; | |
496 } | |
497 settings.mk += cropFloat(data.marks[i].x).toString() + '/' + cropFloat(data.marks[i].y).toString(); | |
624 | 498 } |
643 | 499 } |
500 // Scaler flags | |
501 if (data.scalerFlags) { | |
502 var mo = ''; | |
503 for (var f in data.scalerFlags) { | |
504 if (mo) { | |
505 mo += ','; | |
506 } | |
507 mo += f; | |
508 } | |
509 settings.mo = mo; | |
510 } | |
511 // digilib options | |
512 if (data.dlOpts) { | |
513 var clop = ''; | |
514 for (var o in data.dlOpts) { | |
515 if (clop) { | |
516 clop += ','; | |
517 } | |
518 clop += o; | |
519 } | |
520 settings.clop = clop; | |
624 | 521 } |
522 }; | |
523 | |
602 | 524 // returns maximum size for scaler img in fullscreen mode |
525 var getFullscreenImgSize = function($elem) { | |
526 var winH = $(window).height(); | |
527 var winW = $(window).width(); | |
528 // TODO: account for borders? | |
529 return geom.size(winW, winH); | |
601 | 530 }; |
531 | |
615 | 532 // (re)load the img from a new scaler URL |
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533 var redisplay = function (data) { |
629 | 534 var settings = data.settings; |
535 if (settings.interactionMode === 'fullscreen') { | |
536 // update location.href (browser URL) in fullscreen mode | |
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537 var url = getDigilibUrl(data); |
629 | 538 var history = window.history; |
539 if (typeof(history.pushState) === 'function') { | |
540 console.debug("we could modify history, but we don't..."); | |
541 } | |
542 window.location = url; | |
543 } else { | |
544 // embedded mode -- just change img src | |
545 var url = getScalerUrl(data); | |
546 data.$img.attr('src', url); | |
547 } | |
615 | 548 }; |
549 | |
601 | 550 // creates HTML structure for digilib in elem |
620 | 551 var setupScalerDiv = function (data) { |
552 var settings = data.settings; | |
640 | 553 var $elem = data.$elem; |
616 | 554 var $img; |
601 | 555 if (settings.interactionMode === 'fullscreen') { |
602 | 556 // fullscreen |
557 var imgSize = getFullscreenImgSize($elem); | |
643 | 558 // fitwidth/height omits destination height/width |
559 if (data.dlOpts['fitheight'] == null) { | |
560 settings.dw = imgSize.width; | |
561 } | |
562 if (data.dlOpts['fitwidth'] == null) { | |
563 settings.dh = imgSize.height; | |
564 } | |
606
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565 $img = $('<img/>'); |
629 | 566 var scalerUrl = getScalerUrl(data); |
567 $img.attr('src', scalerUrl); | |
602 | 568 } else { |
606
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569 // embedded mode -- try to keep img tag |
616 | 570 $img = $elem.find('img'); |
606
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571 if ($img.length > 0) { |
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572 console.debug("img detach:",$img); |
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573 $img.detach(); |
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574 } else { |
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575 $img = $('<img/>'); |
629 | 576 var scalerUrl = getScalerUrl(data); |
577 $img.attr('src', scalerUrl); | |
606
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578 } |
601 | 579 } |
606
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580 // create new html |
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581 $elem.empty(); // TODO: should we keep stuff for customization? |
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582 var $scaler = $('<div class="scaler"/>'); |
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583 $elem.append($scaler); |
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584 $scaler.append($img); |
615 | 585 $img.addClass('pic'); |
642 | 586 data.$scaler = $scaler; |
629 | 587 data.$img = $img; |
588 $img.load(scalerImgLoadedHandler(data)); | |
601 | 589 }; |
608 | 590 |
603 | 591 // creates HTML structure for buttons in elem |
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592 var setupButtons = function (data, actionGroup) { |
640 | 593 var $elem = data.$elem; |
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594 var settings = data.settings; |
603 | 595 if (settings.interactionMode === 'fullscreen') { |
596 // fullscreen -- create new | |
605 | 597 var $buttonsDiv = $('<div class="buttons"></div>'); |
598 $elem.append($buttonsDiv); | |
611
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599 var actionNames = settings[actionGroup]; |
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600 for (var i = 0; i < actionNames.length; i++) { |
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601 var actionName = actionNames[i]; |
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602 var buttonSettings = settings.buttons[actionName]; |
605 | 603 // construct the button html |
604 var $button = $('<div class="button"></div>'); | |
605 var $a = $('<a/>'); | |
607 | 606 var $img = $('<img class="button"/>'); |
605 | 607 $buttonsDiv.append($button); |
608 $button.append($a); | |
609 $a.append($img); | |
610 // add attributes and bindings | |
644
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611 $button.attr('title', buttonSettings.tooltip); |
611
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612 $button.addClass('button-' + actionName); |
628 | 613 // create handler for the buttons |
642 | 614 $a.bind('click.digilib', (function () { |
644
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615 // we create a new closure to capture the value of action |
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616 var action = buttonSettings.onclick; |
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617 if ($.isArray(action)) { |
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618 // the handler function calls digilib with action and parameters |
642 | 619 return function (evt) { |
644
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620 console.debug('click action=', action, ' evt=', evt); |
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621 $elem.digilib.apply($elem, action); |
642 | 622 return false; |
612 | 623 }; |
628 | 624 } else { |
644
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625 // the handler function calls digilib with action |
642 | 626 return function (evt) { |
644
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627 console.debug('click action=', action, ' evt=', evt); |
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628 $elem.digilib(action); |
642 | 629 return false; |
628 | 630 }; |
631 } | |
632 })()); | |
644
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633 $img.attr('src', settings.buttonsImagePath + buttonSettings.img); |
630 | 634 } |
604 | 635 } |
605 | 636 return $buttonsDiv; |
603 | 637 }; |
608 | 638 |
639 // creates HTML structure for the bird's eye view in elem | |
631 | 640 var setupBirdDiv = function (data) { |
640 | 641 var $elem = data.$elem; |
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642 var settings = data.settings; |
608 | 643 // use only the relevant parameters |
644 var keys = ['fn','pn','dw','dh']; | |
632 | 645 var birdSettings = $.extend({}, settings, settings.birdDivOptions); |
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646 var birdUrl = settings.scalerBaseUrl + '?' + getParamString(birdSettings, keys); |
608 | 647 // the bird's eye div |
618 | 648 var $birdviewDiv = $('<div class="birdview" style="display:none"/>'); |
608 | 649 // the detail indicator frame |
650 var $birdzoomDiv = $('<div class="birdzoom"/>'); | |
651 // the small image | |
652 var $birdImg = $('<img class="birdimg"/>'); | |
653 $elem.append($birdviewDiv); | |
654 $birdviewDiv.append($birdzoomDiv); | |
655 $birdviewDiv.append($birdImg); | |
656 $birdImg.attr('src', birdUrl); | |
633
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657 if (data.settings.isBirdDivVisible) { |
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658 $birdviewDiv.fadeIn(); |
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659 } |
628 | 660 data.$birdDiv = $birdviewDiv; |
633
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661 }; |
608 | 662 |
618 | 663 // creates HTML structure for the about view in elem |
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664 var setupAboutDiv = function (data) { |
640 | 665 var $elem = data.$elem; |
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666 var settings = data.settings; |
618 | 667 var $aboutDiv = $('<div class="about" style="display:none"/>'); |
609 | 668 var $header = $('<p>Digilib Graphic Viewer</p>'); |
669 var $link = $('<a/>'); | |
670 var $logo = $('<img class="logo" title="digilib"/>'); | |
671 var $content = $('<p/>'); | |
672 $elem.append($aboutDiv); | |
673 $aboutDiv.append($header); | |
674 $aboutDiv.append($link); | |
675 $aboutDiv.append($content); | |
676 $link.append($logo); | |
677 $logo.attr('src', settings.logoUrl); | |
628 | 678 $link.attr('href', settings.homeUrl); |
609 | 679 $content.text('Version: ' + settings.version); |
628 | 680 // click hides |
642 | 681 $aboutDiv.bind('click.digilib', function () { |
639 | 682 settings.isAboutDivVisible = showDiv(settings.isAboutDivVisible, $aboutDiv, 0); |
642 | 683 return false; |
684 }); | |
628 | 685 data.$aboutDiv = $aboutDiv; |
627 | 686 }; |
687 | |
628 | 688 // shows some window e.g. 'about' (toggle visibility if show is null) |
689 var showDiv = function (isVisible, $div, show) { | |
638 | 690 if (show == null) { |
628 | 691 // toggle visibility |
692 isVisible = !isVisible; | |
693 } else { | |
694 // set visibility | |
695 isVisible = show; | |
696 } | |
697 if (isVisible) { | |
698 $div.fadeIn(); | |
699 } else { | |
700 $div.fadeOut(); | |
701 } | |
702 return isVisible; | |
627 | 703 }; |
609 | 704 |
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705 // returns function for load event of scaler img |
629 | 706 var scalerImgLoadedHandler = function (data) { |
620 | 707 var settings = data.settings; |
640 | 708 var $elem = data.$elem; |
629 | 709 var $img = data.$img; |
620 | 710 |
626 | 711 return function () { |
620 | 712 console.debug("img loaded! this=", this, " data=", data); |
636 | 713 var area = data.zoomArea; |
620 | 714 // create Transform from current area and picsize |
647 | 715 var picrect = geom.rectangle($img); |
620 | 716 var trafo = geom.transform(); |
717 // subtract area offset and size | |
640 | 718 trafo.concat(trafo.getTranslation(geom.position(- area.x, - area.y))); |
620 | 719 trafo.concat(trafo.getScale(geom.size(1/area.width, 1/area.height))); |
720 // scale to screen size | |
721 trafo.concat(trafo.getScale(picrect)); | |
722 trafo.concat(trafo.getTranslation(picrect)); | |
723 data.imgTrafo = trafo; | |
724 // display marks | |
626 | 725 renderMarks(data); |
620 | 726 //digilib.showArrows(); // show arrow overlays for zoom navigation |
634 | 727 // done -- hide about div --- |
728 // --- why? This only leads to suprise effects when displayed programmatically | |
729 // settings.isAboutDivVisible = showDiv(null, data.$aboutDiv, 0); | |
606
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730 }; |
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731 }; |
626 | 732 |
733 // place marks on the image | |
734 var renderMarks = function (data) { | |
640 | 735 var $elem = data.$elem; |
636 | 736 var marks = data.marks; |
642 | 737 // TODO: clear marks first(?) |
626 | 738 for (var i = 0; i < marks.length; i++) { |
739 var mark = marks[i]; | |
636 | 740 if (data.zoomArea.containsPosition(mark)) { |
626 | 741 var mpos = data.imgTrafo.transform(mark); |
742 // create mark | |
743 var html = '<div class="mark">'+(i+1)+'</div>'; | |
744 var $mark = $(html); | |
745 $elem.append($mark); | |
647 | 746 $mark.offset({left : mpos.x, top : mpos.y}); |
626 | 747 } |
748 } | |
749 }; | |
624 | 750 |
640 | 751 // zooms by the given factor |
636 | 752 var zoomBy = function(data, factor) { |
753 var area = data.zoomArea; | |
754 var newarea = area.copy(); | |
755 // scale | |
756 newarea.width /= factor; | |
757 newarea.height /= factor; | |
758 // and recenter | |
759 newarea.x -= 0.5 * (newarea.width - area.width); | |
760 newarea.y -= 0.5 * (newarea.height - area.height); | |
761 newarea = MAX_ZOOMAREA.fit(newarea); | |
762 data.zoomArea = newarea; | |
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763 redisplay(data); |
636 | 764 }; |
765 | |
640 | 766 // add a mark where clicked |
767 var setMark = function (data) { | |
642 | 768 var $scaler = data.$scaler; |
640 | 769 console.debug("setmark"); |
770 // start event capturing | |
642 | 771 $scaler.one('click.digilib', function (evt) { |
640 | 772 // event handler adding a new mark |
773 console.debug("setmark.click evt=",evt); | |
774 var mpos = geom.position(evt.pageX, evt.pageY); | |
775 var pos = data.imgTrafo.invtransform(mpos); | |
776 data.marks.push(pos); | |
777 redisplay(data); | |
642 | 778 return false; // do we even get here? |
640 | 779 }); |
780 }; | |
647 | 781 |
782 var zoomArea = function(data) { | |
783 $elem = data.$elem; | |
784 $scaler = data.$scaler; | |
785 var pt1, pt2; | |
786 var $zoomDiv = $('<div class="zoomrect" style="display:none"/>'); | |
787 $elem.append($zoomDiv); | |
788 //var overlay = getElement("overlay"); | |
789 // use overlay div to avoid <img> mousemove problems | |
790 var picRect = geom.rectangle($scaler); | |
791 // FIX ME: is there a way to query the border width from CSS info? | |
792 // rect.x -= 2; // account for overlay borders | |
793 // rect.y -= 2; | |
794 //moveElement(overlay, picRect); | |
795 //showElement(overlay, true); | |
796 // start event capturing | |
797 //registerEvent("mousedown", overlay, zoomStart); | |
798 //registerEvent("mousedown", this.scalerImg, zoomStart); | |
799 | |
800 var zoomStart = function (evt) { | |
801 pt1 = geom.position(evt); | |
802 // setup and show zoom div | |
803 //moveElement(zoomdiv, Rectangle(pt1.x, pt1.y, 0, 0)); | |
804 $zoomDiv.offset({left : pt1.x, top : pt1.y}); | |
805 $zoomDiv.show(); | |
806 // register events | |
807 $elem.bind("mousemove.digilib", zoomMove); | |
808 $elem.bind("mouseup.digilib", zoomEnd); | |
809 return false; | |
810 }; | |
811 | |
812 // mouseup handler: end moving | |
813 var zoomEnd = function (evt) { | |
814 pt2 = geom.position(evt); | |
815 // assume a click and continue if the area is too small | |
816 var clickRect = geom.rectangle(pt1, pt2); | |
817 clickRect.normalize(); | |
818 console.debug("clickRect.getArea()=",clickRect.getArea()); | |
819 if (clickRect.getArea() <= 5) { | |
820 return false; | |
821 } | |
822 // hide zoom div | |
823 $zoomDiv.remove(); | |
824 // unregister events | |
825 $elem.unbind("mousemove.digilib", zoomMove); | |
826 $elem.unbind("mouseup.digilib", zoomEnd); | |
827 // clip and transform | |
828 clickRect.clipTo(picRect); | |
829 var area = data.imgTrafo.invtransform(clickRect); | |
830 data.zoomArea = area; | |
831 // zoomed is always fit | |
832 data.settings.ws = 1; | |
833 redisplay(data); | |
834 return false; | |
835 }; | |
836 | |
837 // mouse move handler | |
838 var zoomMove = function (evt) { | |
839 pt2 = geom.position(evt); | |
840 var rect = geom.rectangle(pt1, pt2); | |
841 rect.normalize(); | |
842 rect.clipTo(picRect); | |
843 // update zoom div | |
844 $zoomDiv.offset({left : rect.x, top : rect.y}); | |
845 $zoomDiv.width(rect.width).height(rect.height); | |
846 return false; | |
847 }; | |
848 | |
849 // bind start zoom handler | |
850 $scaler.one('mousedown.digilib', zoomStart); | |
851 }; | |
640 | 852 |
643 | 853 // sets a key to a value (relative values with +/- if relative=true) |
854 var setNumValue = function(settings, key, value) { | |
855 if (isNumber(value)) return settings[key] = value; | |
856 var sign = value.substring(0,1); | |
857 if (sign === '+' || sign === '-') { | |
858 if (settings[key] == null) { | |
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859 // this isn't perfect but still... |
643 | 860 settings[key] = 0; |
861 } | |
862 settings[key] = parseFloat(settings[key]) + parseFloat(value); | |
863 } else { | |
864 settings[key] = value; | |
865 } | |
866 return settings[key]; | |
867 }; | |
868 | |
634 | 869 // auxiliary function (from Douglas Crockford, A.10) |
870 var isNumber = function isNumber(value) { | |
871 return typeof value === 'number' && isFinite(value); | |
872 }; | |
873 | |
624 | 874 // auxiliary function to crop senseless precision |
875 var cropFloat = function (x) { | |
630 | 876 return parseInt(10000 * x, 10) / 10000; |
624 | 877 }; |
629 | 878 |
598 | 879 // hook plugin into jquery |
644
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880 $.fn.digilib = function(action) { |
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881 if (actions[action]) { |
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882 // call action on this with the remaining arguments (inserting data as first argument) |
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883 var $elem = $(this); |
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884 var data = $elem.data('digilib'); |
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885 var args = Array.prototype.slice.call(arguments, 1); |
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886 args.unshift(data); |
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887 return actions[action].apply(this, args); |
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888 } else if (typeof(action) === 'object' || !action) { |
627 | 889 // call init on this |
644
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890 return actions.init.apply(this, arguments); |
598 | 891 } else { |
644
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892 $.error( 'action ' + action + ' does not exist on jQuery.digilib' ); |
598 | 893 } |
894 }; | |
597 | 895 |
896 })(jQuery); |