Mercurial > hg > digilib-old
annotate client/digitallibrary/jquery/jquery.digilib.js @ 664:d5a5ee4cbf04 jquery
work on getting transformation to work with rotation (currently still doesn't)
author | robcast |
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date | Mon, 24 Jan 2011 00:13:16 +0100 |
parents | 9791a2cec863 |
children | 3de056c96bcf |
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 : { | |
661 | 88 onclick : ["mirror", "h"], |
610 | 89 tooltip : "mirror horizontally", |
90 img : "mirror-horizontal.png" | |
91 }, | |
92 vmir : { | |
661 | 93 onclick : ["mirror", "v"], |
610 | 94 tooltip : "mirror vertically", |
95 img : "mirror-vertical.png" | |
96 }, | |
97 rot : { | |
663 | 98 onclick : "rotate", |
610 | 99 tooltip : "rotate image", |
100 img : "rotate.png" | |
101 }, | |
102 brgt : { | |
663 | 103 onclick : "brightness", |
610 | 104 tooltip : "set brightness", |
105 img : "brightness.png" | |
106 }, | |
107 cont : { | |
663 | 108 onclick : "contrast", |
610 | 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"], |
662 | 190 'buttonsStandard' : ["reference","zoomin","zoomout","zoomarea","zoomfull","pagewidth","mark","delmark","hmir","vmir","back","fwd","page","rot","brgt","cont","rgb","quality","size","calibrationx","scale","bird","help","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}, |
659 | 197 // style of bird's eye window |
198 'birdIndicatorStyle' : {'border' : '2px solid #ff0000' }, | |
616 | 199 // is the "about" window shown? |
200 'isAboutDivVisible' : false | |
201 | |
610 | 202 }; |
655 | 203 |
608 | 204 // affine geometry classes |
205 var geom = dlGeometry(); | |
655 | 206 |
643 | 207 var MAX_ZOOMAREA = geom.rectangle(0, 0, 1, 1); |
655 | 208 |
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209 var actions = { |
654 | 210 // init: 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(); | |
652 | 218 // check scalerBaseUrl |
219 if (settings.scalerBaseUrl == null) { | |
220 // try the host this came from | |
221 var h = window.location.host; | |
222 if (window.location.host) { | |
223 var url = window.location.href; | |
224 // assume the page lives in [webapp]/jquery/ | |
225 var pos = url.indexOf('jquery/'); | |
226 if (pos > 0) { | |
227 settings.scalerBaseUrl = url.substring(0, pos) + 'servlet/Scaler'; | |
228 } | |
229 } | |
230 } | |
636 | 231 } |
604 | 232 return this.each(function() { |
605 | 233 var $elem = $(this); |
234 var data = $elem.data('digilib'); | |
607 | 235 var elemSettings; |
608 | 236 // if the plugin hasn't been initialized yet |
604 | 237 if (!data) { |
605 | 238 // merge query parameters |
607 | 239 if (isFullscreen) { |
240 elemSettings = $.extend({}, settings, queryParams); | |
241 } else { | |
242 elemSettings = $.extend({}, settings, parseImgParams($elem)); | |
634 | 243 } |
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244 // store $(this) element in the settings |
627 | 245 data = { |
647 | 246 $elem : $elem, |
636 | 247 settings : elemSettings, |
248 queryParams : queryParams | |
627 | 249 }; |
605 | 250 // store in data element |
627 | 251 $elem.data('digilib', data); |
604 | 252 } |
633 | 253 unpackParams(data); |
608 | 254 // create HTML structure |
627 | 255 setupScalerDiv(data); |
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256 setupButtons(data, 'buttonsStandard'); |
639 | 257 // bird's eye view creation |
661 | 258 if (elemSettings.isBirdDivVisible) { |
641 | 259 setupBirdDiv(data); |
639 | 260 } |
627 | 261 // about window creation - TODO: could be deferred? restrict to only one item? |
628
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262 setupAboutDiv(data); |
604 | 263 }); |
264 }, | |
608 | 265 |
654 | 266 // destroy: clean up digilib |
651
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267 destroy : function(data) { |
604 | 268 return this.each(function(){ |
636 | 269 var $elem = $(this); |
654 | 270 $(window).unbind('.digilib'); // unbind all digilibs(?) |
604 | 271 data.digilib.remove(); |
636 | 272 $elem.removeData('digilib'); |
604 | 273 }); |
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274 }, |
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275 |
635 | 276 // show or hide the 'about' window |
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277 showAboutDiv : function(data, show) { |
635 | 278 data.settings.isAboutDivVisible = showDiv(data.settings.isAboutDivVisible, data.$aboutDiv, show); |
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279 }, |
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280 |
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281 // event handler: toggles the visibility of the bird's eye window |
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282 showBirdDiv : function (data, show) { |
638 | 283 if (data.$birdDiv == null) { |
284 // no bird div -> create | |
285 setupBirdDiv(data); | |
286 } | |
655 | 287 // TODO: keep bird view visible after reload (parameter, cookie?) |
635 | 288 data.settings.isBirdDivVisible = showDiv(data.settings.isBirdDivVisible, data.$birdDiv, show); |
623 | 289 }, |
655 | 290 |
623 | 291 // goto given page nr (+/-: relative) |
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292 gotoPage : function (data, pageNr) { |
636 | 293 var settings = data.settings; |
623 | 294 var oldpn = settings.pn; |
624 | 295 var pn = setNumValue(settings, "pn", pageNr); |
296 if (pn == null) return false; // nothing happened | |
623 | 297 if (pn < 1) { |
298 alert("no such page (page number too low)"); | |
299 settings.pn = oldpn; | |
300 return false; | |
634 | 301 } |
623 | 302 if (settings.pt) { |
303 if (pn > settings.pt) { | |
304 alert("no such page (page number too high)"); | |
305 settings.pn = oldpn; | |
306 return false; | |
307 } | |
634 | 308 } |
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309 // reset mk and others(?) |
643 | 310 data.marks = []; |
311 data.zoomArea = MAX_ZOOMAREA; | |
636 | 312 // then reload |
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313 redisplay(data); |
643 | 314 }, |
655 | 315 |
643 | 316 // zoom by a given factor |
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317 zoomBy : function (data, factor) { |
643 | 318 zoomBy(data, factor); |
647 | 319 }, |
320 | |
654 | 321 // zoom interactively |
322 zoomArea : function (data) { | |
323 zoomArea(data); | |
324 }, | |
325 | |
647 | 326 // zoom out to full page |
651
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327 zoomFull : function (data, mode) { |
647 | 328 data.zoomArea = MAX_ZOOMAREA; |
650 | 329 if (mode === 'width') { |
330 data.dlOpts.fitwidth = 1; | |
331 delete data.dlOpts.fitheight; | |
332 } else if (mode === 'height') { | |
333 data.dlOpts.fitheight = 1; | |
334 delete data.dlOpts.fitwidth; | |
335 } else { | |
336 delete data.dlOpts.fitwidth; | |
337 delete data.dlOpts.fitheight; | |
338 } | |
647 | 339 redisplay(data); |
340 }, | |
341 | |
342 // set a mark by clicking (or giving a position) | |
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343 setMark : function (data, mpos) { |
647 | 344 if (mpos == null) { |
345 // interactive | |
346 setMark(data); | |
347 } else { | |
348 // use position | |
349 data.marks.push(pos); | |
350 redisplay(data); | |
351 } | |
650 | 352 }, |
353 | |
354 // remove the last mark | |
651
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355 removeMark : function (data) { |
650 | 356 data.marks.pop(); |
357 redisplay(data); | |
661 | 358 }, |
359 | |
360 // mirror the image | |
361 mirror : function (data, mode) { | |
362 var flags = data.scalerFlags; | |
363 if (mode === 'h') { | |
364 if (flags.hmir) { | |
365 delete flags.hmir; | |
366 } else { | |
367 flags.hmir = 1; | |
368 } | |
369 } else { | |
370 if (flags.vmir) { | |
371 delete flags.vmir; | |
372 } else { | |
373 flags.vmir = 1; | |
374 } | |
375 } | |
376 redisplay(data); | |
663 | 377 }, |
378 | |
379 // rotate the image | |
380 rotate : function (data, angle) { | |
381 var rot = data.settings.rot; | |
382 if (angle == null) { | |
383 angle = window.prompt("Rotation angle:", rot); | |
384 } | |
385 data.settings.rot = angle; | |
386 redisplay(data); | |
387 }, | |
388 | |
389 // change brightness | |
390 brightness : function (data, factor) { | |
391 var brgt = data.settings.brgt; | |
392 if (factor == null) { | |
393 factor = window.prompt("Brightness (-255..255)", brgt); | |
394 } | |
395 data.settings.brgt = factor; | |
396 redisplay(data); | |
397 }, | |
398 | |
399 // change contrast | |
400 contrast : function (data, factor) { | |
401 var cont = data.settings.cont; | |
402 if (factor == null) { | |
403 factor = window.prompt("Contrast (-8, 8)", cont); | |
404 } | |
405 data.settings.cont = factor; | |
406 redisplay(data); | |
604 | 407 } |
663 | 408 |
650 | 409 |
605 | 410 }; |
604 | 411 |
608 | 412 // returns parameters from page url |
607 | 413 var parseQueryParams = function() { |
636 | 414 return parseQueryString(window.location.search.slice(1)); |
415 }; | |
655 | 416 |
636 | 417 // returns parameters from embedded img-element |
607 | 418 var parseImgParams = function($elem) { |
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419 var src = $elem.find('img').first().attr('src'); |
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420 if (!src) { |
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421 return null; |
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422 } |
607 | 423 var pos = src.indexOf('?'); |
424 var query = (pos < 0) ? '' : src.substring(pos + 1); | |
425 var scalerUrl = src.substring(0, pos); | |
627 | 426 var params = parseQueryString(query); |
427 params.scalerBaseUrl = scalerUrl; | |
428 return params; | |
636 | 429 }; |
607 | 430 |
608 | 431 // parses query parameter string into parameter object |
607 | 432 var parseQueryString = function(query) { |
433 var pairs = query.split("&"); | |
627 | 434 var params = {}; |
636 | 435 //var keys = []; |
607 | 436 for (var i = 0; i < pairs.length; i++) { |
437 var pair = pairs[i].split("="); | |
438 if (pair.length === 2) { | |
627 | 439 params[pair[0]] = pair[1]; |
636 | 440 //keys.push(pair[0]); |
634 | 441 } |
636 | 442 } |
627 | 443 return params; |
636 | 444 }; |
604 | 445 |
643 | 446 // returns a query string from key names from a parameter hash (ignoring if the same value is in defaults) |
447 var getParamString = function (settings, keys, defaults) { | |
615 | 448 var paramString = ''; |
650 | 449 var nx = false; |
615 | 450 for (i = 0; i < keys.length; ++i) { |
451 var key = keys[i]; | |
663 | 452 if ((settings[key] != null) && ((defaults == null) || (settings[key] != defaults[key]))) { |
615 | 453 // first param gets no '&' |
650 | 454 if (nx) { |
455 paramString += '&'; | |
456 } else { | |
457 nx = true; | |
458 } | |
615 | 459 // add parm=val |
460 paramString += key + '=' + settings[key]; | |
643 | 461 } |
615 | 462 } |
463 return paramString; | |
631 | 464 }; |
465 | |
636 | 466 // returns URL and query string for Scaler |
467 var getScalerUrl = function (data) { | |
653 | 468 var settings = data.settings; |
652 | 469 if (settings.scalerBaseUrl == null) { |
470 alert("ERROR: URL of digilib Scaler servlet missing!"); | |
471 } | |
636 | 472 var keys = settings.scalerParamNames; |
643 | 473 var queryString = getParamString(settings, keys, defaults); |
636 | 474 var url = settings.scalerBaseUrl + '?' + queryString; |
475 return url; | |
476 }; | |
477 | |
478 // returns URL and query string for current digilib | |
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479 var getDigilibUrl = function (data) { |
643 | 480 packParams(data); |
636 | 481 var settings = data.settings; |
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482 var queryString = getParamString(settings, settings.digilibParamNames, defaults); |
636 | 483 var url = window.location.toString(); |
484 var pos = url.indexOf('?'); | |
485 var baseUrl = url.substring(0, pos); | |
486 var newurl = baseUrl + '?' + queryString; | |
487 return newurl; | |
488 }; | |
489 | |
655 | 490 // processes some parameters into objects and stuff |
631 | 491 var unpackParams = function (data) { |
492 var settings = data.settings; | |
636 | 493 // zoom area |
631 | 494 var zoomArea = geom.rectangle(settings.wx, settings.wy, settings.ww, settings.wh); |
643 | 495 data.zoomArea = zoomArea; |
636 | 496 // marks |
631 | 497 var marks = []; |
650 | 498 if (settings.mk) { |
499 var mk = settings.mk; | |
500 if (mk.indexOf(";") >= 0) { | |
501 var pa = mk.split(";"); // old format with ";" | |
502 } else { | |
503 var pa = mk.split(","); // new format | |
504 } | |
505 for (var i = 0; i < pa.length ; i++) { | |
506 var pos = pa[i].split("/"); | |
507 if (pos.length > 1) { | |
508 marks.push(geom.position(pos[0], pos[1])); | |
509 } | |
633 | 510 } |
631 | 511 } |
643 | 512 data.marks = marks; |
650 | 513 // mo (Scaler flags) |
514 var flags = {}; | |
515 if (settings.mo) { | |
516 var pa = settings.mo.split(","); | |
517 for (var i = 0; i < pa.length ; i++) { | |
518 flags[pa[i]] = pa[i]; | |
519 } | |
520 } | |
521 data.scalerFlags = flags; | |
522 // clop (digilib options) | |
523 var opts = {}; | |
524 if (settings.clop) { | |
525 var pa = settings.clop.split(","); | |
526 for (var i = 0; i < pa.length ; i++) { | |
527 opts[pa[i]] = pa[i]; | |
528 } | |
529 } | |
530 data.dlOpts = opts; | |
661 | 531 // birdview option |
532 if (opts.birdview) { | |
533 settings.isBirdDivVisible = 1; | |
534 } | |
655 | 535 }; |
536 | |
631 | 537 // put objects back into parameters |
538 var packParams = function (data) { | |
539 var settings = data.settings; | |
636 | 540 // zoom area |
643 | 541 if (data.zoomArea) { |
647 | 542 settings.wx = cropFloat(data.zoomArea.x); |
543 settings.wy = cropFloat(data.zoomArea.y); | |
544 settings.ww = cropFloat(data.zoomArea.width); | |
545 settings.wh = cropFloat(data.zoomArea.height); | |
631 | 546 } |
636 | 547 // marks |
643 | 548 if (data.marks) { |
650 | 549 settings.mk = ''; |
643 | 550 for (var i = 0; i < data.marks.length; i++) { |
650 | 551 if (i) { |
552 settings.mk += ','; | |
553 } | |
554 settings.mk += cropFloat(data.marks[i].x).toString() + '/' + cropFloat(data.marks[i].y).toString(); | |
631 | 555 } |
650 | 556 } |
557 // Scaler flags | |
558 if (data.scalerFlags) { | |
559 var mo = ''; | |
560 for (var f in data.scalerFlags) { | |
561 if (mo) { | |
562 mo += ','; | |
563 } | |
564 mo += f; | |
565 } | |
566 settings.mo = mo; | |
567 } | |
661 | 568 // digilib option birdview |
569 if (settings.isBirdDivVisible) { | |
570 data.dlOpts.birdview = 1; | |
662 | 571 } else { |
572 delete data.dlOpts.birdview; | |
661 | 573 } |
650 | 574 // digilib options |
575 if (data.dlOpts) { | |
576 var clop = ''; | |
577 for (var o in data.dlOpts) { | |
578 if (clop) { | |
579 clop += ','; | |
580 } | |
581 clop += o; | |
582 } | |
583 settings.clop = clop; | |
631 | 584 } |
585 }; | |
655 | 586 |
622 | 587 // (re)load the img from a new scaler URL |
644
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588 var redisplay = function (data) { |
636 | 589 var settings = data.settings; |
590 if (settings.interactionMode === 'fullscreen') { | |
591 // update location.href (browser URL) in fullscreen mode | |
644
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592 var url = getDigilibUrl(data); |
636 | 593 var history = window.history; |
594 if (typeof(history.pushState) === 'function') { | |
595 console.debug("we could modify history, but we don't..."); | |
596 } | |
597 window.location = url; | |
598 } else { | |
599 // embedded mode -- just change img src | |
600 var url = getScalerUrl(data); | |
601 data.$img.attr('src', url); | |
602 } | |
622 | 603 }; |
604 | |
662 | 605 // returns maximum size for scaler img in fullscreen mode |
606 var getFullscreenImgSize = function($elem) { | |
607 var $win = $(window); | |
608 var winH = $win.height(); | |
609 var winW = $win.width(); | |
610 // TODO: account for borders? | |
611 return geom.size(winW, winH); | |
612 }; | |
613 | |
608 | 614 // creates HTML structure for digilib in elem |
627 | 615 var setupScalerDiv = function (data) { |
616 var settings = data.settings; | |
647 | 617 var $elem = data.$elem; |
623 | 618 var $img; |
608 | 619 if (settings.interactionMode === 'fullscreen') { |
609 | 620 // fullscreen |
621 var imgSize = getFullscreenImgSize($elem); | |
650 | 622 // fitwidth/height omits destination height/width |
623 if (data.dlOpts['fitheight'] == null) { | |
624 settings.dw = imgSize.width; | |
625 } | |
626 if (data.dlOpts['fitwidth'] == null) { | |
627 settings.dh = imgSize.height; | |
628 } | |
613
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629 $img = $('<img/>'); |
636 | 630 var scalerUrl = getScalerUrl(data); |
631 $img.attr('src', scalerUrl); | |
609 | 632 } else { |
613
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633 // embedded mode -- try to keep img tag |
623 | 634 $img = $elem.find('img'); |
613
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635 if ($img.length > 0) { |
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636 console.debug("img detach:",$img); |
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637 $img.detach(); |
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638 } else { |
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639 $img = $('<img/>'); |
636 | 640 var scalerUrl = getScalerUrl(data); |
641 $img.attr('src', scalerUrl); | |
613
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642 } |
608 | 643 } |
613
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644 // create new html |
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645 $elem.empty(); // TODO: should we keep stuff for customization? |
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646 var $scaler = $('<div class="scaler"/>'); |
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647 $elem.append($scaler); |
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648 $scaler.append($img); |
622 | 649 $img.addClass('pic'); |
649 | 650 data.$scaler = $scaler; |
636 | 651 data.$img = $img; |
652 $img.load(scalerImgLoadedHandler(data)); | |
608 | 653 }; |
615 | 654 |
610 | 655 // creates HTML structure for buttons in elem |
628
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656 var setupButtons = function (data, actionGroup) { |
647 | 657 var $elem = data.$elem; |
628
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658 var settings = data.settings; |
610 | 659 if (settings.interactionMode === 'fullscreen') { |
660 // fullscreen -- create new | |
612 | 661 var $buttonsDiv = $('<div class="buttons"></div>'); |
662 $elem.append($buttonsDiv); | |
618
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663 var actionNames = settings[actionGroup]; |
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664 for (var i = 0; i < actionNames.length; i++) { |
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665 var actionName = actionNames[i]; |
651
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666 var buttonSettings = settings.buttons[actionName]; |
612 | 667 // construct the button html |
668 var $button = $('<div class="button"></div>'); | |
669 var $a = $('<a/>'); | |
614 | 670 var $img = $('<img class="button"/>'); |
612 | 671 $buttonsDiv.append($button); |
672 $button.append($a); | |
673 $a.append($img); | |
674 // add attributes and bindings | |
651
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675 $button.attr('title', buttonSettings.tooltip); |
618
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676 $button.addClass('button-' + actionName); |
635 | 677 // create handler for the buttons |
649 | 678 $a.bind('click.digilib', (function () { |
651
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679 // we create a new closure to capture the value of action |
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680 var action = buttonSettings.onclick; |
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681 if ($.isArray(action)) { |
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682 // the handler function calls digilib with action and parameters |
649 | 683 return function (evt) { |
651
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684 console.debug('click action=', action, ' evt=', evt); |
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685 $elem.digilib.apply($elem, action); |
649 | 686 return false; |
619 | 687 }; |
635 | 688 } else { |
651
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689 // the handler function calls digilib with action |
649 | 690 return function (evt) { |
651
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691 console.debug('click action=', action, ' evt=', evt); |
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692 $elem.digilib(action); |
649 | 693 return false; |
635 | 694 }; |
695 } | |
696 })()); | |
651
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697 $img.attr('src', settings.buttonsImagePath + buttonSettings.img); |
637 | 698 } |
611 | 699 } |
662 | 700 // make buttons div scroll if too large for window |
701 if ($buttonsDiv.height() > $(window).height() - 10) { | |
702 $buttonsDiv.css('position', 'absolute'); | |
703 } | |
612 | 704 return $buttonsDiv; |
610 | 705 }; |
615 | 706 |
707 // creates HTML structure for the bird's eye view in elem | |
638 | 708 var setupBirdDiv = function (data) { |
647 | 709 var $elem = data.$elem; |
628
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710 var settings = data.settings; |
615 | 711 // use only the relevant parameters |
712 var keys = ['fn','pn','dw','dh']; | |
639 | 713 var birdSettings = $.extend({}, settings, settings.birdDivOptions); |
628
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714 var birdUrl = settings.scalerBaseUrl + '?' + getParamString(birdSettings, keys); |
615 | 715 // the bird's eye div |
658
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716 var $birdDiv = $('<div class="birdview" style="display:none"/>'); |
615 | 717 // the detail indicator frame |
655 | 718 var $birdzoomDiv = $('<div class="birdzoom" style="position: absolute; background-color: transparent;"/>'); |
615 | 719 // the small image |
720 var $birdImg = $('<img class="birdimg"/>'); | |
658
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721 $elem.append($birdDiv); |
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722 $birdDiv.append($birdzoomDiv); |
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723 $birdDiv.append($birdImg); |
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724 data.$birdDiv = $birdDiv; |
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725 data.$birdImg = $birdImg; |
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726 $birdImg.load(birdImgLoadedHandler(data)); |
615 | 727 $birdImg.attr('src', birdUrl); |
640
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728 if (data.settings.isBirdDivVisible) { |
658
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729 $birdDiv.fadeIn(); |
640
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730 } |
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731 }; |
615 | 732 |
625 | 733 // creates HTML structure for the about view in elem |
628
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734 var setupAboutDiv = function (data) { |
647 | 735 var $elem = data.$elem; |
628
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736 var settings = data.settings; |
625 | 737 var $aboutDiv = $('<div class="about" style="display:none"/>'); |
616 | 738 var $header = $('<p>Digilib Graphic Viewer</p>'); |
739 var $link = $('<a/>'); | |
740 var $logo = $('<img class="logo" title="digilib"/>'); | |
741 var $content = $('<p/>'); | |
742 $elem.append($aboutDiv); | |
743 $aboutDiv.append($header); | |
744 $aboutDiv.append($link); | |
745 $aboutDiv.append($content); | |
746 $link.append($logo); | |
747 $logo.attr('src', settings.logoUrl); | |
635 | 748 $link.attr('href', settings.homeUrl); |
616 | 749 $content.text('Version: ' + settings.version); |
635 | 750 // click hides |
649 | 751 $aboutDiv.bind('click.digilib', function () { |
646 | 752 settings.isAboutDivVisible = showDiv(settings.isAboutDivVisible, $aboutDiv, 0); |
649 | 753 return false; |
754 }); | |
635 | 755 data.$aboutDiv = $aboutDiv; |
634 | 756 }; |
757 | |
635 | 758 // shows some window e.g. 'about' (toggle visibility if show is null) |
759 var showDiv = function (isVisible, $div, show) { | |
645 | 760 if (show == null) { |
635 | 761 // toggle visibility |
762 isVisible = !isVisible; | |
763 } else { | |
764 // set visibility | |
765 isVisible = show; | |
766 } | |
767 if (isVisible) { | |
768 $div.fadeIn(); | |
769 } else { | |
770 $div.fadeOut(); | |
771 } | |
772 return isVisible; | |
634 | 773 }; |
616 | 774 |
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775 // create Transform from area and $img |
664
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776 var getImgTrafo = function ($img, area, data) { |
658
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777 var picrect = geom.rectangle($img); |
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778 var trafo = geom.transform(); |
664
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779 // zoom area offset |
658
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780 trafo.concat(trafo.getTranslation(geom.position(-area.x, -area.y))); |
664
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781 // zoom area size |
658
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782 trafo.concat(trafo.getScale(geom.size(1/area.width, 1/area.height))); |
664
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783 // rotate |
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784 if (data) { |
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785 var rot = trafo.getRotationAround(-parseFloat(data.settings.rot), |
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786 geom.position(0.5 * area.width + area.x, 0.5 * area.height + area.y)); |
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787 trafo.concat(rot); |
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788 } |
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789 // scale to screen position and size |
658
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790 trafo.concat(trafo.getScale(picrect)); |
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791 trafo.concat(trafo.getTranslation(picrect)); |
664
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792 /* if (data && data.settings.rot) { |
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793 var rot = trafo.getRotationAround(-data.settings.rot, |
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794 geom.position(0.5 * picrect.width + picrect.x, 0.5 * picrect.height + picrect.y)); |
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795 //var trans1 = trafo.getTranslation(geom.position(-0.5*picrect.width, -0.5*picrect.height)); |
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796 //var rot = trafo.getRotation(data.settings.rot); |
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797 //var trans2 = trafo.getTranslation(geom.position(0.5*picrect.width, 0.5*pirect.height)); |
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798 //trafo.concat(trans1); |
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799 trafo.concat(rot); |
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800 //trafo.concat(trans2); |
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801 } */ |
658
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802 return trafo; |
655 | 803 }; |
658
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804 |
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805 // returns function for load event of scaler img |
636 | 806 var scalerImgLoadedHandler = function (data) { |
807 var $img = data.$img; | |
633 | 808 return function () { |
627 | 809 console.debug("img loaded! this=", this, " data=", data); |
810 // create Transform from current area and picsize | |
664
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811 data.imgTrafo = getImgTrafo($img, data.zoomArea, data); |
627 | 812 // display marks |
633 | 813 renderMarks(data); |
627 | 814 //digilib.showArrows(); // show arrow overlays for zoom navigation |
658
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815 }; |
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816 }; |
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817 |
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818 // returns function for load event of bird's eye view img |
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819 var birdImgLoadedHandler = function (data) { |
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820 var $img = data.$birdImg; |
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821 return function () { |
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822 console.debug("birdimg loaded! this=", this, " data=", data); |
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823 // create Transform from current area and picsize |
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824 data.birdTrafo = getImgTrafo($img, MAX_ZOOMAREA); |
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825 // display marks |
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826 renderBirdArea(data); |
613
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827 }; |
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828 }; |
633 | 829 |
830 // place marks on the image | |
831 var renderMarks = function (data) { | |
647 | 832 var $elem = data.$elem; |
643 | 833 var marks = data.marks; |
649 | 834 // TODO: clear marks first(?) |
633 | 835 for (var i = 0; i < marks.length; i++) { |
836 var mark = marks[i]; | |
643 | 837 if (data.zoomArea.containsPosition(mark)) { |
633 | 838 var mpos = data.imgTrafo.transform(mark); |
664
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839 console.debug("renderMarks: mpos=",mpos); |
633 | 840 // create mark |
841 var html = '<div class="mark">'+(i+1)+'</div>'; | |
842 var $mark = $(html); | |
843 $elem.append($mark); | |
654 | 844 $mark.offset({left : mpos.x, top : mpos.y}); |
633 | 845 } |
846 } | |
847 }; | |
655 | 848 |
658
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849 var renderBirdArea = function (data) { |
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850 var $ind = data.$birdDiv.find('div.birdzoom'); |
659 | 851 var zoomArea = data.zoomArea; |
852 var indRect = data.birdTrafo.transform(zoomArea); | |
660 | 853 if (isFullArea(zoomArea)) return $ind.hide(); |
658
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854 // TODO: set the coordinates all in one call? |
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855 $ind.width(indRect.width); |
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856 $ind.height(indRect.height); |
659 | 857 // offset minus frame width |
858 $ind.offset({ left : indRect.x-2, top : indRect.y-2 }); | |
859 $ind.css(data.settings.birdIndicatorStyle); | |
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860 }; |
659 | 861 |
647 | 862 // zooms by the given factor |
643 | 863 var zoomBy = function(data, factor) { |
864 var area = data.zoomArea; | |
865 var newarea = area.copy(); | |
866 // scale | |
867 newarea.width /= factor; | |
868 newarea.height /= factor; | |
869 // and recenter | |
870 newarea.x -= 0.5 * (newarea.width - area.width); | |
871 newarea.y -= 0.5 * (newarea.height - area.height); | |
872 newarea = MAX_ZOOMAREA.fit(newarea); | |
873 data.zoomArea = newarea; | |
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874 redisplay(data); |
643 | 875 }; |
876 | |
647 | 877 // add a mark where clicked |
878 var setMark = function (data) { | |
649 | 879 var $scaler = data.$scaler; |
647 | 880 console.debug("setmark"); |
881 // start event capturing | |
649 | 882 $scaler.one('click.digilib', function (evt) { |
647 | 883 // event handler adding a new mark |
884 console.debug("setmark.click evt=",evt); | |
885 var mpos = geom.position(evt.pageX, evt.pageY); | |
886 var pos = data.imgTrafo.invtransform(mpos); | |
887 data.marks.push(pos); | |
888 redisplay(data); | |
649 | 889 return false; // do we even get here? |
647 | 890 }); |
891 }; | |
654 | 892 |
893 var zoomArea = function(data) { | |
894 $elem = data.$elem; | |
895 $scaler = data.$scaler; | |
896 var pt1, pt2; | |
897 var $zoomDiv = $('<div class="zoomrect" style="display:none"/>'); | |
898 $elem.append($zoomDiv); | |
899 //var overlay = getElement("overlay"); | |
900 // use overlay div to avoid <img> mousemove problems | |
901 var picRect = geom.rectangle($scaler); | |
902 // FIX ME: is there a way to query the border width from CSS info? | |
903 // rect.x -= 2; // account for overlay borders | |
904 // rect.y -= 2; | |
905 //moveElement(overlay, picRect); | |
906 //showElement(overlay, true); | |
907 // start event capturing | |
908 //registerEvent("mousedown", overlay, zoomStart); | |
909 //registerEvent("mousedown", this.scalerImg, zoomStart); | |
910 | |
911 var zoomStart = function (evt) { | |
912 pt1 = geom.position(evt); | |
913 // setup and show zoom div | |
914 //moveElement(zoomdiv, Rectangle(pt1.x, pt1.y, 0, 0)); | |
915 $zoomDiv.offset({left : pt1.x, top : pt1.y}); | |
916 $zoomDiv.show(); | |
917 // register events | |
918 $elem.bind("mousemove.digilib", zoomMove); | |
919 $elem.bind("mouseup.digilib", zoomEnd); | |
920 return false; | |
921 }; | |
922 | |
923 // mouseup handler: end moving | |
924 var zoomEnd = function (evt) { | |
925 pt2 = geom.position(evt); | |
926 // assume a click and continue if the area is too small | |
927 var clickRect = geom.rectangle(pt1, pt2); | |
928 clickRect.normalize(); | |
929 console.debug("clickRect.getArea()=",clickRect.getArea()); | |
930 if (clickRect.getArea() <= 5) { | |
931 return false; | |
932 } | |
933 // hide zoom div | |
934 $zoomDiv.remove(); | |
935 // unregister events | |
936 $elem.unbind("mousemove.digilib", zoomMove); | |
937 $elem.unbind("mouseup.digilib", zoomEnd); | |
938 // clip and transform | |
939 clickRect.clipTo(picRect); | |
940 var area = data.imgTrafo.invtransform(clickRect); | |
941 data.zoomArea = area; | |
942 // zoomed is always fit | |
943 data.settings.ws = 1; | |
944 redisplay(data); | |
945 return false; | |
946 }; | |
947 | |
948 // mouse move handler | |
949 var zoomMove = function (evt) { | |
950 pt2 = geom.position(evt); | |
951 var rect = geom.rectangle(pt1, pt2); | |
952 rect.normalize(); | |
953 rect.clipTo(picRect); | |
954 // update zoom div | |
955 $zoomDiv.offset({left : rect.x, top : rect.y}); | |
956 $zoomDiv.width(rect.width).height(rect.height); | |
957 return false; | |
958 }; | |
959 | |
960 // bind start zoom handler | |
961 $scaler.one('mousedown.digilib', zoomStart); | |
962 }; | |
647 | 963 |
650 | 964 // sets a key to a value (relative values with +/- if relative=true) |
965 var setNumValue = function(settings, key, value) { | |
966 if (isNumber(value)) return settings[key] = value; | |
967 var sign = value.substring(0,1); | |
968 if (sign === '+' || sign === '-') { | |
969 if (settings[key] == null) { | |
651
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970 // this isn't perfect but still... |
650 | 971 settings[key] = 0; |
972 } | |
973 settings[key] = parseFloat(settings[key]) + parseFloat(value); | |
974 } else { | |
975 settings[key] = value; | |
976 } | |
977 return settings[key]; | |
978 }; | |
655 | 979 |
980 // auxiliary function (from old dllib.js) | |
659 | 981 isFullArea = function(area) { |
982 return (area.width === 1.0) && (area.height === 1.0); | |
655 | 983 }; |
984 | |
641 | 985 // auxiliary function (from Douglas Crockford, A.10) |
986 var isNumber = function isNumber(value) { | |
987 return typeof value === 'number' && isFinite(value); | |
988 }; | |
655 | 989 |
631 | 990 // auxiliary function to crop senseless precision |
991 var cropFloat = function (x) { | |
637 | 992 return parseInt(10000 * x, 10) / 10000; |
631 | 993 }; |
655 | 994 |
605 | 995 // hook plugin into jquery |
651
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996 $.fn.digilib = function(action) { |
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997 if (actions[action]) { |
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998 // call action on this with the remaining arguments (inserting data as first argument) |
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999 var $elem = $(this); |
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1000 var data = $elem.data('digilib'); |
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1001 var args = Array.prototype.slice.call(arguments, 1); |
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1002 args.unshift(data); |
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1003 return actions[action].apply(this, args); |
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1004 } else if (typeof(action) === 'object' || !action) { |
634 | 1005 // call init on this |
651
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1006 return actions.init.apply(this, arguments); |
605 | 1007 } else { |
651
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1008 $.error( 'action ' + action + ' does not exist on jQuery.digilib' ); |
605 | 1009 } |
1010 }; | |
604 | 1011 |
1012 })(jQuery); |