Mercurial > hg > digilib-old
annotate client/digitallibrary/jquery/jquery.digilib.js @ 713:c1fa722c570e jquery
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author | robcast |
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date | Sun, 30 Jan 2011 17:58:56 +0100 |
parents | eab17859be79 |
children | 667a316edb89 |
rev | line source |
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1 /* Copyright (c) 2011 Martin Raspe, Robert Casties |
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2 |
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3 This program is free software: you can redistribute it and/or modify |
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4 it under the terms of the GNU Lesser General Public License as published by |
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5 the Free Software Foundation, either version 2 of the License, or |
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6 (at your option) any later version. |
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7 |
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8 This program is distributed in the hope that it will be useful, |
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9 but WITHOUT ANY WARRANTY; without even the implied warranty of |
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10 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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11 GNU Lesser General Public License for more details. |
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12 |
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13 You should have received a copy of the GNU Lesser General Public License |
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14 along with this program. If not, see <http://www.gnu.org/licenses/>. |
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15 |
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16 Authors: |
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17 Martin Raspe, Robert Casties, 11.1.2011 |
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18 */ |
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19 |
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20 /** |
604 | 21 * digilib jQuery plugin |
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22 * |
604 | 23 */ |
655 | 24 |
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25 /*jslint browser: true, debug: true, forin: true */ |
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26 |
636 | 27 // fallback for console.log calls |
28 if (typeof(console) === 'undefined') { | |
29 var console = { | |
692 | 30 log : function(){}, |
31 debug : function(){}, | |
32 error : function(){} | |
33 }; | |
34 var customConsole = true; | |
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35 } |
604 | 36 |
37 (function($) { | |
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38 var buttons = { |
610 | 39 reference : { |
689 | 40 onclick : "reference", |
610 | 41 tooltip : "get a reference URL", |
42 img : "reference.png" | |
43 }, | |
44 zoomin : { | |
643 | 45 onclick : ["zoomBy", 1.4], |
610 | 46 tooltip : "zoom in", |
47 img : "zoom-in.png" | |
48 }, | |
49 zoomout : { | |
643 | 50 onclick : ["zoomBy", 0.7], |
610 | 51 tooltip : "zoom out", |
52 img : "zoom-out.png" | |
53 }, | |
54 zoomarea : { | |
654 | 55 onclick : "zoomArea", |
610 | 56 tooltip : "zoom area", |
57 img : "zoom-area.png" | |
58 }, | |
59 zoomfull : { | |
650 | 60 onclick : "zoomFull", |
610 | 61 tooltip : "view the whole image", |
62 img : "zoom-full.png" | |
63 }, | |
64 pagewidth : { | |
650 | 65 onclick : ["zoomFull", "width"], |
610 | 66 tooltip : "page width", |
67 img : "pagewidth.png" | |
68 }, | |
69 back : { | |
623 | 70 onclick : ["gotoPage", "-1"], |
610 | 71 tooltip : "goto previous image", |
72 img : "back.png" | |
73 }, | |
74 fwd : { | |
623 | 75 onclick : ["gotoPage", "+1"], |
610 | 76 tooltip : "goto next image", |
77 img : "fwd.png" | |
78 }, | |
79 page : { | |
80 onclick : "javascript:gotoPageWin()", | |
81 tooltip : "specify image", | |
82 img : "page.png" | |
83 }, | |
84 bird : { | |
635 | 85 onclick : "showBirdDiv", |
610 | 86 tooltip : "show bird's eye view", |
87 img : "birds-eye.png" | |
88 }, | |
89 help : { | |
635 | 90 onclick : "showAboutDiv", |
610 | 91 tooltip : "about Digilib", |
92 img : "help.png" | |
93 }, | |
94 reset : { | |
688 | 95 onclick : "reset", |
610 | 96 tooltip : "reset image", |
97 img : "reset.png" | |
98 }, | |
99 mark : { | |
647 | 100 onclick : "setMark", |
610 | 101 tooltip : "set a mark", |
102 img : "mark.png" | |
103 }, | |
104 delmark : { | |
650 | 105 onclick : "removeMark", |
610 | 106 tooltip : "delete the last mark", |
107 img : "delmark.png" | |
108 }, | |
109 hmir : { | |
661 | 110 onclick : ["mirror", "h"], |
610 | 111 tooltip : "mirror horizontally", |
112 img : "mirror-horizontal.png" | |
113 }, | |
114 vmir : { | |
661 | 115 onclick : ["mirror", "v"], |
610 | 116 tooltip : "mirror vertically", |
117 img : "mirror-vertical.png" | |
118 }, | |
119 rot : { | |
663 | 120 onclick : "rotate", |
610 | 121 tooltip : "rotate image", |
122 img : "rotate.png" | |
123 }, | |
124 brgt : { | |
663 | 125 onclick : "brightness", |
610 | 126 tooltip : "set brightness", |
127 img : "brightness.png" | |
128 }, | |
129 cont : { | |
663 | 130 onclick : "contrast", |
610 | 131 tooltip : "set contrast", |
132 img : "contrast.png" | |
133 }, | |
134 rgb : { | |
135 onclick : "javascript:setParamWin('rgb', '...')", | |
136 tooltip : "set rgb values", | |
137 img : "rgb.png" | |
138 }, | |
139 quality : { | |
703 | 140 onclick : "setquality", |
610 | 141 tooltip : "set image quality", |
142 img : "quality.png" | |
143 }, | |
144 size : { | |
145 onclick : "javascript:toggleSizeMenu()", | |
146 tooltip : "set page size", | |
147 img : "size.png" | |
148 }, | |
149 calibrationx : { | |
150 onclick : "javascript:calibrate('x')", | |
151 tooltip : "calibrate screen x-ratio", | |
152 img : "calibration-x.png" | |
153 }, | |
154 scale : { | |
155 onclick : "javascript:toggleScaleMenu()", | |
156 tooltip : "change image scale", | |
157 img : "original-size.png" | |
158 }, | |
699 | 159 toggleoptions : { |
160 onclick : "morebuttons", | |
161 tooltip : "more options", | |
162 img : "options.png" | |
163 }, | |
690 | 164 moreoptions : { |
165 onclick : ["morebuttons", "+1"], | |
166 tooltip : "more options", | |
167 img : "options.png" | |
168 }, | |
169 lessoptions : { | |
170 onclick : ["morebuttons", "-1"], | |
171 tooltip : "less options", | |
610 | 172 img : "options.png" |
173 }, | |
174 SEP : { | |
175 img : "sep.png" | |
176 } | |
177 }; | |
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178 |
605 | 179 var defaults = { |
616 | 180 // version of this script |
635 | 181 'version' : 'jquery.digilib.js 0.9', |
616 | 182 // logo url |
183 'logoUrl' : '../img/digilib-logo-text1.png', | |
635 | 184 // homepage url (behind logo) |
185 'homeUrl' : 'http://digilib.berlios.de', | |
610 | 186 // base URL to Scaler servlet |
652 | 187 'scalerBaseUrl' : null, |
610 | 188 // list of Scaler parameters |
627 | 189 'scalerParamNames' : ['fn','pn','dw','dh','ww','wh','wx','wy','ws','mo', |
190 'rot','cont','brgt','rgbm','rgba','ddpi','ddpix','ddpiy'], | |
191 // Scaler parameter defaults | |
643 | 192 'pn' : 1, |
627 | 193 'ww' : 1.0, |
194 'wh' : 1.0, | |
195 'wx' : 0.0, | |
196 'wy' : 0.0, | |
197 'ws' : 1.0, | |
643 | 198 'mo' : '', |
199 'rot' : 0, | |
200 'cont' : 0, | |
201 'brgt' : 0, | |
202 'rgbm' : '0/0/0', | |
203 'rgba' : '0/0/0', | |
204 'ddpi' : null, | |
205 'ddpix' : null, | |
206 'ddpiy' : null, | |
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207 // list of digilib parameters |
650 | 208 'digilibParamNames' : ['fn','pn','ww','wh','wx','wy','ws','mo','rot','cont','brgt','rgbm','rgba','mk','clop'], |
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209 // digilib parameter defaults |
643 | 210 'mk' : '', |
650 | 211 'clop' : '', |
643 | 212 // mode of operation: |
213 // fullscreen = take parameters from page URL, keep state in page URL | |
214 // embedded = take parameters from Javascript options, keep state inside object | |
610 | 215 'interactionMode' : 'fullscreen', |
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216 // buttons |
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217 'buttons' : buttons, |
668 | 218 // defaults for digilib buttons |
665 | 219 'buttonSettings' : { |
220 'fullscreen' : { | |
668 | 221 // path to button images (must end with a slash) |
665 | 222 'imagePath' : 'img/fullscreen/', |
699 | 223 'standardSet' : ["reference","zoomin","zoomout","zoomarea","zoomfull","pagewidth","back","fwd","page","bird","SEP","help","reset","toggleoptions"], |
224 'specialSet' : ["mark","delmark","hmir","vmir","rot","brgt","cont","rgb","quality","size","calibrationx","scale","SEP","toggleoptions"], | |
682 | 225 'buttonSets' : ['standardSet', 'specialSet'] |
665 | 226 }, |
227 'embedded' : { | |
228 'imagePath' : 'img/embedded/16/', | |
699 | 229 'standardSet' : ["reference","zoomin","zoomout","zoomarea","zoomfull","back","fwd","page","bird","SEP","help","reset","toggleoptions"], |
230 'specialSet' : ["hmir","vmir","rot","brgt","cont","rgb","quality","size","SEP","toggleoptions"], | |
682 | 231 'buttonSets' : ['standardSet', 'specialSet'] |
665 | 232 } |
697 | 233 }, |
234 // number of visible button groups | |
235 'visibleButtonSets' : 1, | |
616 | 236 // is birdView shown? |
237 'isBirdDivVisible' : false, | |
668 | 238 // dimensions of bird's eye div |
674 | 239 'birdDivWidth' : 200, |
240 'birdDivHeight' : 200, | |
668 | 241 // style of the zoom area indicator in the bird's eye div |
659 | 242 'birdIndicatorStyle' : {'border' : '2px solid #ff0000' }, |
668 | 243 // style of zoom area "rubber band" |
244 'zoomrectStyle' : {'border' : '2px solid #ff0000' }, | |
616 | 245 // is the "about" window shown? |
246 'isAboutDivVisible' : false | |
247 | |
610 | 248 }; |
655 | 249 |
608 | 250 // affine geometry classes |
251 var geom = dlGeometry(); | |
655 | 252 |
643 | 253 var MAX_ZOOMAREA = geom.rectangle(0, 0, 1, 1); |
655 | 254 |
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255 var actions = { |
668 | 256 // init: digilib initialization |
257 init : function(options) { | |
258 // settings for this digilib instance are merged from defaults and options | |
259 var settings = $.extend({}, defaults, options); | |
260 var isFullscreen = settings.interactionMode === 'fullscreen'; | |
261 var queryParams = {}; | |
262 if (isFullscreen) { | |
263 queryParams = parseQueryParams(); | |
264 // check scalerBaseUrl | |
265 if (settings.scalerBaseUrl == null) { | |
266 // try the host this came from | |
267 var h = window.location.host; | |
268 if (window.location.host) { | |
269 var url = window.location.href; | |
270 // assume the page lives in [webapp]/jquery/ | |
271 var pos = url.indexOf('jquery/'); | |
272 if (pos > 0) { | |
273 settings.scalerBaseUrl = url.substring(0, pos) + 'servlet/Scaler'; | |
652 | 274 } |
275 } | |
636 | 276 } |
668 | 277 } |
278 return this.each(function() { | |
279 var $elem = $(this); | |
280 var data = $elem.data('digilib'); | |
688 | 281 var params, elemSettings; |
668 | 282 // if the plugin hasn't been initialized yet |
283 if (!data) { | |
284 // merge query parameters | |
285 if (isFullscreen) { | |
688 | 286 params = queryParams; |
668 | 287 } else { |
688 | 288 params = parseImgParams($elem); |
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289 } |
668 | 290 // store $(this) element in the settings |
688 | 291 elemSettings = $.extend({}, settings, params); |
697 | 292 data = { |
668 | 293 $elem : $elem, |
294 settings : elemSettings, | |
688 | 295 queryParams : params |
668 | 296 }; |
297 // store in data element | |
298 $elem.data('digilib', data); | |
299 } | |
300 unpackParams(data); | |
682 | 301 // create HTML structure for scaler |
668 | 302 setupScalerDiv(data); |
697 | 303 // add buttons |
304 for (var i = 0; i < elemSettings.visibleButtonSets; ++i) { | |
305 showButtons(data, true, i); | |
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306 } |
668 | 307 // bird's eye view creation |
710 | 308 if (elemSettings.isBirdDivVisible) { |
638 | 309 setupBirdDiv(data); |
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310 } |
668 | 311 // about window creation - TODO: could be deferred? restrict to only one item? |
312 setupAboutDiv(data); | |
710 | 313 // TODO: the actual moving code |
707 | 314 setupZoomDrag(data); |
668 | 315 }); |
316 }, | |
317 | |
318 // destroy: clean up digilib | |
319 destroy : function(data) { | |
320 return this.each(function(){ | |
321 var $elem = $(this); | |
322 $(window).unbind('.digilib'); // unbind all digilibs(?) | |
323 data.digilib.remove(); | |
324 $elem.removeData('digilib'); | |
325 }); | |
326 }, | |
327 | |
328 // show or hide the 'about' window | |
329 showAboutDiv : function(data, show) { | |
330 data.settings.isAboutDivVisible = showDiv(data.settings.isAboutDivVisible, data.$aboutDiv, show); | |
331 }, | |
655 | 332 |
668 | 333 // event handler: toggles the visibility of the bird's eye window |
334 showBirdDiv : function (data, show) { | |
335 if (data.$birdDiv == null) { | |
336 // no bird div -> create | |
337 setupBirdDiv(data); | |
338 } | |
339 data.settings.isBirdDivVisible = showDiv(data.settings.isBirdDivVisible, data.$birdDiv, show); | |
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340 data.$birdImg.triggerHandler('load'); |
668 | 341 }, |
342 | |
343 // goto given page nr (+/-: relative) | |
344 gotoPage : function (data, pageNr) { | |
345 var settings = data.settings; | |
346 var oldpn = settings.pn; | |
347 var pn = setNumValue(settings, "pn", pageNr); | |
348 if (pn == null) return false; // nothing happened | |
349 if (pn < 1) { | |
350 alert("no such page (page number too low)"); | |
351 settings.pn = oldpn; | |
352 return false; | |
353 } | |
354 if (settings.pt) { | |
355 if (pn > settings.pt) { | |
356 alert("no such page (page number too high)"); | |
623 | 357 settings.pn = oldpn; |
358 return false; | |
634 | 359 } |
668 | 360 } |
361 // reset mk and others(?) | |
362 data.marks = []; | |
363 data.zoomArea = MAX_ZOOMAREA; | |
364 // then reload | |
365 redisplay(data); | |
366 }, | |
654 | 367 |
668 | 368 // zoom by a given factor |
369 zoomBy : function (data, factor) { | |
370 zoomBy(data, factor); | |
371 }, | |
647 | 372 |
668 | 373 // zoom interactively |
374 zoomArea : function (data) { | |
375 zoomArea(data); | |
376 }, | |
650 | 377 |
668 | 378 // zoom out to full page |
379 zoomFull : function (data, mode) { | |
380 data.zoomArea = MAX_ZOOMAREA; | |
381 if (mode === 'width') { | |
382 data.dlOpts.fitwidth = 1; | |
383 delete data.dlOpts.fitheight; | |
384 } else if (mode === 'height') { | |
385 data.dlOpts.fitheight = 1; | |
386 delete data.dlOpts.fitwidth; | |
387 } else { | |
388 delete data.dlOpts.fitwidth; | |
389 delete data.dlOpts.fitheight; | |
390 } | |
391 redisplay(data); | |
392 }, | |
393 | |
394 // set a mark by clicking (or giving a position) | |
395 setMark : function (data, mpos) { | |
396 if (mpos == null) { | |
397 // interactive | |
398 setMark(data); | |
399 } else { | |
400 // use position | |
401 data.marks.push(pos); | |
663 | 402 redisplay(data); |
604 | 403 } |
668 | 404 }, |
405 | |
406 // remove the last mark | |
407 removeMark : function (data) { | |
408 data.marks.pop(); | |
409 redisplay(data); | |
410 }, | |
411 | |
412 // mirror the image | |
413 mirror : function (data, mode) { | |
414 var flags = data.scalerFlags; | |
415 if (mode === 'h') { | |
416 if (flags.hmir) { | |
417 delete flags.hmir; | |
418 } else { | |
419 flags.hmir = 1; | |
420 } | |
421 } else { | |
422 if (flags.vmir) { | |
423 delete flags.vmir; | |
424 } else { | |
425 flags.vmir = 1; | |
426 } | |
427 } | |
428 redisplay(data); | |
429 }, | |
650 | 430 |
668 | 431 // rotate the image |
432 rotate : function (data, angle) { | |
433 var rot = data.settings.rot; | |
434 if (angle == null) { | |
435 angle = window.prompt("Rotation angle:", rot); | |
436 } | |
437 data.settings.rot = angle; | |
438 redisplay(data); | |
439 }, | |
440 | |
441 // change brightness | |
442 brightness : function (data, factor) { | |
443 var brgt = data.settings.brgt; | |
444 if (factor == null) { | |
445 factor = window.prompt("Brightness (-255..255)", brgt); | |
446 } | |
447 data.settings.brgt = factor; | |
448 redisplay(data); | |
449 }, | |
450 | |
451 // change contrast | |
452 contrast : function (data, factor) { | |
453 var cont = data.settings.cont; | |
454 if (factor == null) { | |
455 factor = window.prompt("Contrast (-8, 8)", cont); | |
456 } | |
457 data.settings.cont = factor; | |
458 redisplay(data); | |
688 | 459 }, |
710 | 460 |
690 | 461 // display more (or less) button sets |
462 morebuttons : function (data, more) { | |
696 | 463 var settings = data.settings; |
699 | 464 if (more == null) { |
703 | 465 // toggle more or less (only works for 2 sets) |
699 | 466 var maxbtns = settings.buttonSettings[settings.interactionMode].buttonSets.length; |
467 if (settings.visibleButtonSets >= maxbtns) { | |
468 more = '-1'; | |
469 } else { | |
470 more = '+1'; | |
471 } | |
472 } | |
690 | 473 if (more === '-1') { |
474 // remove set | |
697 | 475 var setIdx = settings.visibleButtonSets - 1; |
476 if (showButtons(data, false, setIdx, true)) { | |
477 settings.visibleButtonSets--; | |
478 } | |
690 | 479 } else { |
480 // add set | |
697 | 481 var setIdx = settings.visibleButtonSets; |
482 if (showButtons(data, true, setIdx, true)) { | |
483 settings.visibleButtonSets++; | |
690 | 484 } |
485 } | |
691 | 486 }, |
688 | 487 |
703 | 488 // reset image parameters to defaults |
688 | 489 reset : function (data) { |
490 var settings = data.settings; | |
491 var paramNames = settings.digilibParamNames; | |
492 var params = data.queryParams; | |
709 | 493 // resets zoomArea, marks, scalerflags |
688 | 494 resetData(data); |
495 // delete all digilib parameters | |
496 for (var i = 0; i < paramNames.length; i++) { | |
497 var paramName = paramNames[i]; | |
498 delete settings[paramName]; | |
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499 } |
688 | 500 // fullscreen: restore only fn/pn parameters |
501 if (settings.interactionMode === 'fullscreen') { | |
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502 settings.fn = params.fn || ''; // no default defined |
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503 settings.pn = params.pn || defaults.pn; |
688 | 504 // embedded: restore original parameters |
505 } else { | |
506 $.extend(settings, params); | |
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507 } |
709 | 508 // TODO: should we really reset all user preferences here? |
509 settings.isBirdDivVisible = false; | |
510 settings.visibleButtonSets = 1; | |
688 | 511 redisplay(data); |
689 | 512 }, |
513 | |
703 | 514 // presents a reference url (returns value if noprompt) |
515 reference : function (data, noprompt) { | |
689 | 516 var settings = data.settings; |
517 var url; | |
518 if (settings.interactionMode === 'fullscreen') { | |
519 url = getDigilibUrl(data); | |
520 } else { | |
521 url = getScalerUrl(data); | |
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522 } |
703 | 523 if (noprompt == null) { |
524 window.prompt("URL reference to the current view", url); | |
525 } | |
526 return url; | |
527 }, | |
710 | 528 |
703 | 529 // set image quality |
530 setquality : function (data, qual) { | |
531 var oldq = getQuality(data); | |
532 if (qual == null) { | |
533 qual = window.prompt("Image quality (0..2)", oldq); | |
534 } | |
535 qual = parseInt(qual, 10); | |
536 if (qual >= 0 && qual <= 2) { | |
537 setQuality(data, qual); | |
538 redisplay(data); | |
539 } | |
668 | 540 } |
605 | 541 }; |
604 | 542 |
608 | 543 // returns parameters from page url |
607 | 544 var parseQueryParams = function() { |
636 | 545 return parseQueryString(window.location.search.slice(1)); |
546 }; | |
655 | 547 |
636 | 548 // returns parameters from embedded img-element |
607 | 549 var parseImgParams = function($elem) { |
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550 var src = $elem.find('img').first().attr('src'); |
710 | 551 if (!src) return null; |
607 | 552 var pos = src.indexOf('?'); |
553 var query = (pos < 0) ? '' : src.substring(pos + 1); | |
554 var scalerUrl = src.substring(0, pos); | |
627 | 555 var params = parseQueryString(query); |
556 params.scalerBaseUrl = scalerUrl; | |
557 return params; | |
636 | 558 }; |
607 | 559 |
608 | 560 // parses query parameter string into parameter object |
607 | 561 var parseQueryString = function(query) { |
701 | 562 var params = {}; |
563 if (query == null) return params; | |
607 | 564 var pairs = query.split("&"); |
636 | 565 //var keys = []; |
607 | 566 for (var i = 0; i < pairs.length; i++) { |
567 var pair = pairs[i].split("="); | |
568 if (pair.length === 2) { | |
627 | 569 params[pair[0]] = pair[1]; |
636 | 570 //keys.push(pair[0]); |
634 | 571 } |
636 | 572 } |
627 | 573 return params; |
636 | 574 }; |
668 | 575 |
643 | 576 // returns a query string from key names from a parameter hash (ignoring if the same value is in defaults) |
577 var getParamString = function (settings, keys, defaults) { | |
615 | 578 var paramString = ''; |
650 | 579 var nx = false; |
615 | 580 for (i = 0; i < keys.length; ++i) { |
581 var key = keys[i]; | |
663 | 582 if ((settings[key] != null) && ((defaults == null) || (settings[key] != defaults[key]))) { |
615 | 583 // first param gets no '&' |
650 | 584 if (nx) { |
585 paramString += '&'; | |
586 } else { | |
587 nx = true; | |
588 } | |
615 | 589 // add parm=val |
590 paramString += key + '=' + settings[key]; | |
643 | 591 } |
615 | 592 } |
593 return paramString; | |
631 | 594 }; |
595 | |
636 | 596 // returns URL and query string for Scaler |
597 var getScalerUrl = function (data) { | |
653 | 598 var settings = data.settings; |
652 | 599 if (settings.scalerBaseUrl == null) { |
600 alert("ERROR: URL of digilib Scaler servlet missing!"); | |
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601 } |
665 | 602 packParams(data); |
636 | 603 var keys = settings.scalerParamNames; |
643 | 604 var queryString = getParamString(settings, keys, defaults); |
636 | 605 var url = settings.scalerBaseUrl + '?' + queryString; |
606 return url; | |
607 }; | |
608 | |
609 // returns URL and query string for current digilib | |
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610 var getDigilibUrl = function (data) { |
643 | 611 packParams(data); |
636 | 612 var settings = data.settings; |
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613 var queryString = getParamString(settings, settings.digilibParamNames, defaults); |
636 | 614 var url = window.location.toString(); |
615 var pos = url.indexOf('?'); | |
616 var baseUrl = url.substring(0, pos); | |
617 var newurl = baseUrl + '?' + queryString; | |
618 return newurl; | |
619 }; | |
620 | |
655 | 621 // processes some parameters into objects and stuff |
631 | 622 var unpackParams = function (data) { |
623 var settings = data.settings; | |
636 | 624 // zoom area |
631 | 625 var zoomArea = geom.rectangle(settings.wx, settings.wy, settings.ww, settings.wh); |
643 | 626 data.zoomArea = zoomArea; |
636 | 627 // marks |
631 | 628 var marks = []; |
650 | 629 if (settings.mk) { |
630 var mk = settings.mk; | |
631 if (mk.indexOf(";") >= 0) { | |
632 var pa = mk.split(";"); // old format with ";" | |
633 } else { | |
634 var pa = mk.split(","); // new format | |
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635 } |
650 | 636 for (var i = 0; i < pa.length ; i++) { |
637 var pos = pa[i].split("/"); | |
638 if (pos.length > 1) { | |
639 marks.push(geom.position(pos[0], pos[1])); | |
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640 } |
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641 } |
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642 } |
643 | 643 data.marks = marks; |
650 | 644 // mo (Scaler flags) |
645 var flags = {}; | |
646 if (settings.mo) { | |
647 var pa = settings.mo.split(","); | |
648 for (var i = 0; i < pa.length ; i++) { | |
649 flags[pa[i]] = pa[i]; | |
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650 } |
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651 } |
650 | 652 data.scalerFlags = flags; |
709 | 653 retrieveOptionsCookie(data); |
655 | 654 }; |
655 | |
631 | 656 // put objects back into parameters |
657 var packParams = function (data) { | |
658 var settings = data.settings; | |
636 | 659 // zoom area |
643 | 660 if (data.zoomArea) { |
647 | 661 settings.wx = cropFloat(data.zoomArea.x); |
662 settings.wy = cropFloat(data.zoomArea.y); | |
663 settings.ww = cropFloat(data.zoomArea.width); | |
664 settings.wh = cropFloat(data.zoomArea.height); | |
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665 } |
636 | 666 // marks |
643 | 667 if (data.marks) { |
650 | 668 settings.mk = ''; |
643 | 669 for (var i = 0; i < data.marks.length; i++) { |
650 | 670 if (i) { |
671 settings.mk += ','; | |
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672 } |
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673 settings.mk += cropFloat(data.marks[i].x).toString() + |
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674 '/' + cropFloat(data.marks[i].y).toString(); |
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675 } |
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676 } |
650 | 677 // Scaler flags |
678 if (data.scalerFlags) { | |
679 var mo = ''; | |
680 for (var f in data.scalerFlags) { | |
681 if (mo) { | |
682 mo += ','; | |
683 } | |
684 mo += f; | |
685 } | |
686 settings.mo = mo; | |
687 } | |
710 | 688 // user interface options |
709 | 689 storeOptionsCookie(data); |
690 }; | |
688 | 691 |
709 | 692 var storeOptionsCookie = function (data) { |
701 | 693 // save digilib options in cookie |
709 | 694 // TODO: in embedded mode this is not called |
701 | 695 /* store in parameter clop |
696 * if (data.dlOpts) { | |
697 var clop = ''; | |
698 for (var o in data.dlOpts) { | |
699 if (clop) { | |
650 | 700 clop += ','; |
701 } | |
702 clop += o; | |
703 } | |
704 settings.clop = clop; | |
701 | 705 } */ |
709 | 706 var settings = data.settings; |
707 if (data.dlOpts) { | |
708 // save digilib settings in options | |
709 data.dlOpts.birdview = settings.isBirdDivVisible ? 1 : 0; | |
710 data.dlOpts.buttons = settings.visibleButtonSets; | |
711 var clop = ''; | |
712 for (var o in data.dlOpts) { | |
713 if (clop) { | |
714 clop += '&'; | |
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715 } |
709 | 716 clop += o + '=' + data.dlOpts[o]; |
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717 } |
709 | 718 if (jQuery.cookie) { |
719 var ck = "digilib:fn:" + escape(settings.fn) + ":pn:" + settings.pn; | |
720 console.debug("set cookie=", ck, " value=", clop); | |
721 jQuery.cookie(ck, clop); | |
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722 } |
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723 } |
631 | 724 }; |
655 | 725 |
709 | 726 var retrieveOptionsCookie = function (data) { |
727 // clop (digilib options) | |
728 var opts = {}; | |
729 var settings = data.settings; | |
730 if (jQuery.cookie) { | |
731 /* read from parameter clop | |
732 * if (settings.clop) { | |
733 var pa = settings.clop.split(","); | |
734 for (var i = 0; i < pa.length ; i++) { | |
735 opts[pa[i]] = pa[i]; | |
736 } | |
737 } */ | |
738 // read from cookie | |
739 var ck = "digilib:fn:" + escape(settings.fn) + ":pn:" + settings.pn; | |
740 var cp = jQuery.cookie(ck); | |
741 console.debug("get cookie=", ck, " value=", cp); | |
742 // in query string format | |
743 opts = parseQueryString(cp); | |
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744 } |
709 | 745 data.dlOpts = opts; |
746 // birdview option | |
747 if (opts.birdview != null) { | |
748 settings.isBirdDivVisible = opts.birdview === '1'; | |
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749 } |
709 | 750 // visible button sets |
751 if (opts.buttons != null) { | |
752 settings.visibleButtonSets = opts.buttons; | |
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753 } |
711 | 754 }; |
709 | 755 |
688 | 756 // clear digilib data for reset |
757 var resetData = function (data) { | |
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758 // TODO: we should reset instead of delete |
688 | 759 if (data.zoomArea) delete data.zoomArea; |
760 if (data.marks) delete data.marks; | |
761 if (data.scalerFlags) delete data.scalerFlags; | |
762 }; | |
763 | |
622 | 764 // (re)load the img from a new scaler URL |
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765 var redisplay = function (data) { |
636 | 766 var settings = data.settings; |
767 if (settings.interactionMode === 'fullscreen') { | |
768 // update location.href (browser URL) in fullscreen mode | |
644
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769 var url = getDigilibUrl(data); |
636 | 770 var history = window.history; |
771 if (typeof(history.pushState) === 'function') { | |
772 console.debug("we could modify history, but we don't..."); | |
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773 } |
636 | 774 window.location = url; |
775 } else { | |
776 // embedded mode -- just change img src | |
777 var url = getScalerUrl(data); | |
778 data.$img.attr('src', url); | |
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779 } |
622 | 780 }; |
781 | |
662 | 782 // returns maximum size for scaler img in fullscreen mode |
783 var getFullscreenImgSize = function($elem) { | |
784 var $win = $(window); | |
785 var winH = $win.height(); | |
786 var winW = $win.width(); | |
787 // TODO: account for borders? | |
788 return geom.size(winW, winH); | |
789 }; | |
790 | |
608 | 791 // creates HTML structure for digilib in elem |
627 | 792 var setupScalerDiv = function (data) { |
793 var settings = data.settings; | |
647 | 794 var $elem = data.$elem; |
686 | 795 var $img, scalerUrl; |
796 // fullscreen | |
608 | 797 if (settings.interactionMode === 'fullscreen') { |
609 | 798 var imgSize = getFullscreenImgSize($elem); |
650 | 799 // fitwidth/height omits destination height/width |
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800 if (data.dlOpts.fitheight == null) { |
650 | 801 settings.dw = imgSize.width; |
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802 } |
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803 if (data.dlOpts.fitwidth == null) { |
650 | 804 settings.dh = imgSize.height; |
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805 } |
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806 $img = $('<img/>'); |
686 | 807 scalerUrl = getScalerUrl(data); |
808 // embedded mode -- try to keep img tag | |
609 | 809 } else { |
623 | 810 $img = $elem.find('img'); |
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811 if ($img.length > 0) { |
686 | 812 console.debug("img detach:", $img); |
813 scalerUrl = $img.attr('src'); | |
613
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814 $img.detach(); |
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815 } else { |
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816 $img = $('<img/>'); |
686 | 817 scalerUrl = getScalerUrl(data); |
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818 } |
608 | 819 } |
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820 // create new html |
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821 $elem.empty(); // TODO: should we keep stuff for customization? |
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822 var $scaler = $('<div class="scaler"/>'); |
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823 $elem.append($scaler); |
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824 $scaler.append($img); |
622 | 825 $img.addClass('pic'); |
649 | 826 data.$scaler = $scaler; |
636 | 827 data.$img = $img; |
687 | 828 // setup image load handler before setting the src attribute (IE bug) |
829 $img.load(scalerImgLoadedHandler(data)); | |
830 $img.attr('src', scalerUrl); | |
608 | 831 }; |
615 | 832 |
610 | 833 // creates HTML structure for buttons in elem |
697 | 834 var createButtons = function (data, buttonSetIdx) { |
647 | 835 var $elem = data.$elem; |
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836 var settings = data.settings; |
665 | 837 var mode = settings.interactionMode; |
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838 var buttonSettings = settings.buttonSettings[mode]; |
682 | 839 var buttonGroup = buttonSettings.buttonSets[buttonSetIdx]; |
690 | 840 if (buttonGroup == null) { |
841 // no buttons here | |
842 return; | |
843 } | |
844 var $buttonsDiv = $('<div class="buttons"/>'); | |
682 | 845 var buttonNames = buttonSettings[buttonGroup]; |
846 for (var i = 0; i < buttonNames.length; i++) { | |
847 var buttonName = buttonNames[i]; | |
848 var buttonConfig = settings.buttons[buttonName]; | |
665 | 849 // construct the button html |
850 var $button = $('<div class="button"></div>'); | |
851 var $a = $('<a/>'); | |
852 var $img = $('<img class="button"/>'); | |
853 $buttonsDiv.append($button); | |
854 $button.append($a); | |
855 $a.append($img); | |
856 // add attributes and bindings | |
857 $button.attr('title', buttonConfig.tooltip); | |
682 | 858 $button.addClass('button-' + buttonName); |
665 | 859 // create handler for the buttons |
860 $a.bind('click.digilib', (function () { | |
861 // we create a new closure to capture the value of action | |
862 var action = buttonConfig.onclick; | |
863 if ($.isArray(action)) { | |
864 // the handler function calls digilib with action and parameters | |
865 return function (evt) { | |
866 console.debug('click action=', action, ' evt=', evt); | |
867 $elem.digilib.apply($elem, action); | |
868 return false; | |
869 }; | |
870 } else { | |
871 // the handler function calls digilib with action | |
872 return function (evt) { | |
873 console.debug('click action=', action, ' evt=', evt); | |
874 $elem.digilib(action); | |
875 return false; | |
876 }; | |
877 } | |
878 })()); | |
879 $img.attr('src', buttonSettings.imagePath + buttonConfig.img); | |
690 | 880 } |
662 | 881 // make buttons div scroll if too large for window |
882 if ($buttonsDiv.height() > $(window).height() - 10) { | |
883 $buttonsDiv.css('position', 'absolute'); | |
884 } | |
697 | 885 // buttons hidden at first |
886 $buttonsDiv.hide(); | |
887 $elem.append($buttonsDiv); | |
682 | 888 if (data.$buttonSets == null) { |
697 | 889 // first button set |
682 | 890 data.$buttonSets = [$buttonsDiv]; |
891 } else { | |
690 | 892 $elem.append($buttonsDiv); |
682 | 893 data.$buttonSets[buttonSetIdx] = $buttonsDiv; |
894 } | |
612 | 895 return $buttonsDiv; |
610 | 896 }; |
615 | 897 |
898 // creates HTML structure for the bird's eye view in elem | |
638 | 899 var setupBirdDiv = function (data) { |
647 | 900 var $elem = data.$elem; |
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901 var settings = data.settings; |
615 | 902 // use only the relevant parameters |
903 var keys = ['fn','pn','dw','dh']; | |
674 | 904 var birdDivOptions = { |
905 dw : settings.birdDivWidth, | |
906 dh : settings.birdDivHeight | |
907 }; | |
908 var birdSettings = $.extend({}, settings, birdDivOptions); | |
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909 var birdUrl = settings.scalerBaseUrl + '?' + getParamString(birdSettings, keys); |
615 | 910 // the bird's eye div |
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911 var $birdDiv = $('<div class="birdview" style="display:none"/>'); |
615 | 912 // the detail indicator frame |
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913 var $birdZoom = $('<div class="birdZoom" style="display:none; position:absolute; background-color:transparent;"/>'); |
615 | 914 // the small image |
915 var $birdImg = $('<img class="birdimg"/>'); | |
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916 $elem.append($birdDiv); |
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917 $birdDiv.append($birdZoom); |
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918 $birdDiv.append($birdImg); |
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919 $birdZoom.css(data.settings.birdIndicatorStyle); |
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920 data.$birdDiv = $birdDiv; |
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921 data.$birdZoom = $birdZoom; |
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922 data.$birdImg = $birdImg; |
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923 $birdImg.load(birdImgLoadedHandler(data)); |
615 | 924 $birdImg.attr('src', birdUrl); |
640
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925 if (data.settings.isBirdDivVisible) { |
687 | 926 $birdDiv.show(); |
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927 } |
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928 birdZoom(data); |
640
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929 }; |
615 | 930 |
625 | 931 // creates HTML structure for the about view in elem |
628
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932 var setupAboutDiv = function (data) { |
647 | 933 var $elem = data.$elem; |
628
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934 var settings = data.settings; |
625 | 935 var $aboutDiv = $('<div class="about" style="display:none"/>'); |
616 | 936 var $header = $('<p>Digilib Graphic Viewer</p>'); |
937 var $link = $('<a/>'); | |
938 var $logo = $('<img class="logo" title="digilib"/>'); | |
939 var $content = $('<p/>'); | |
940 $elem.append($aboutDiv); | |
941 $aboutDiv.append($header); | |
942 $aboutDiv.append($link); | |
943 $aboutDiv.append($content); | |
944 $link.append($logo); | |
945 $logo.attr('src', settings.logoUrl); | |
635 | 946 $link.attr('href', settings.homeUrl); |
616 | 947 $content.text('Version: ' + settings.version); |
635 | 948 // click hides |
649 | 949 $aboutDiv.bind('click.digilib', function () { |
646 | 950 settings.isAboutDivVisible = showDiv(settings.isAboutDivVisible, $aboutDiv, 0); |
649 | 951 return false; |
710 | 952 }); |
635 | 953 data.$aboutDiv = $aboutDiv; |
634 | 954 }; |
955 | |
635 | 956 // shows some window e.g. 'about' (toggle visibility if show is null) |
957 var showDiv = function (isVisible, $div, show) { | |
645 | 958 if (show == null) { |
635 | 959 // toggle visibility |
960 isVisible = !isVisible; | |
961 } else { | |
962 // set visibility | |
963 isVisible = show; | |
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964 } |
635 | 965 if (isVisible) { |
966 $div.fadeIn(); | |
967 } else { | |
968 $div.fadeOut(); | |
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969 } |
635 | 970 return isVisible; |
634 | 971 }; |
616 | 972 |
697 | 973 // display more (or less) button sets |
974 var showButtons = function (data, more, setIdx, animated) { | |
711 | 975 var atime = animated ? 'fast': 0; |
697 | 976 if (more) { |
977 // add set | |
978 var $otherSets = data.$elem.find('div.buttons:visible'); | |
979 var $set; | |
980 if (data.$buttonSets && data.$buttonSets[setIdx]) { | |
981 // set exists | |
982 $set = data.$buttonSets[setIdx]; | |
983 } else { | |
984 $set = createButtons(data, setIdx); | |
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985 } |
697 | 986 if ($set == null) return false; |
987 var btnWidth = $set.width(); | |
988 // move remaining sets left and show new set | |
711 | 989 if ($otherSets.length > 0) { |
990 $otherSets.animate({right : '+='+btnWidth+'px'}, atime, | |
991 function () {$set.show();}); | |
697 | 992 } else { |
993 $set.show(); | |
711 | 994 } |
697 | 995 } else { |
996 // remove set | |
997 var $set = data.$buttonSets[setIdx]; | |
998 if ($set == null) return false; | |
999 var btnWidth = $set.width(); | |
1000 // hide last set | |
1001 $set.hide(); | |
1002 // take remaining sets and move right | |
1003 var $otherSets = data.$elem.find('div.buttons:visible'); | |
711 | 1004 $otherSets.animate({right : '-='+btnWidth+'px'}, atime); |
1005 } | |
697 | 1006 return true; |
1007 }; | |
1008 | |
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1009 // create Transform from area and $img |
675 | 1010 var getImgTrafo = function ($img, area, rot, hmir, vmir) { |
658
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1011 var picrect = geom.rectangle($img); |
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1012 var trafo = geom.transform(); |
675 | 1013 // move zoom area offset to center |
658
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1014 trafo.concat(trafo.getTranslation(geom.position(-area.x, -area.y))); |
675 | 1015 // scale zoom area size to [1,1] |
658
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1016 trafo.concat(trafo.getScale(geom.size(1/area.width, 1/area.height))); |
675 | 1017 // rotate and mirror (around transformed image center i.e. [0.5,0.5]) |
1018 if (rot || hmir || vmir) { | |
1019 // move [0.5,0.5] to center | |
1020 trafo.concat(trafo.getTranslation(geom.position(-0.5, -0.5))); | |
1021 if (hmir) { | |
1022 // mirror about center | |
1023 trafo.concat(trafo.getMirror('y')); | |
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1024 } |
675 | 1025 if (vmir) { |
1026 // mirror about center | |
1027 trafo.concat(trafo.getMirror('x')); | |
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1028 } |
675 | 1029 if (rot) { |
1030 // rotate around center | |
1031 trafo.concat(trafo.getRotation(parseFloat(rot))); | |
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1032 } |
675 | 1033 // move back |
1034 trafo.concat(trafo.getTranslation(geom.position(0.5, 0.5))); | |
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1035 } |
664
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1036 // scale to screen position and size |
658
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1037 trafo.concat(trafo.getScale(picrect)); |
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1038 trafo.concat(trafo.getTranslation(picrect)); |
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1039 return trafo; |
655 | 1040 }; |
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1041 |
613
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1042 // returns function for load event of scaler img |
636 | 1043 var scalerImgLoadedHandler = function (data) { |
1044 var $img = data.$img; | |
633 | 1045 return function () { |
627 | 1046 console.debug("img loaded! this=", this, " data=", data); |
1047 // create Transform from current area and picsize | |
675 | 1048 data.imgTrafo = getImgTrafo($img, data.zoomArea, |
1049 data.settings.rot, data.scalerFlags.hmir, data.scalerFlags.vmir); | |
686 | 1050 console.debug("imgTrafo=", data.imgTrafo); |
627 | 1051 // display marks |
633 | 1052 renderMarks(data); |
695
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1053 // TODO: digilib.showArrows(); // show arrow overlays for zoom navigation |
678
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1054 var $birdImg = data.$birdImg; |
705 | 1055 // should the birdview adapt to mirror or rotation? decision: No. :-) |
670
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1056 if ($birdImg) { |
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1057 $birdImg.triggerHandler('load'); |
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1058 } |
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1059 }; |
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1060 }; |
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1061 |
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1062 // returns function for load event of bird's eye view img |
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1063 var birdImgLoadedHandler = function (data) { |
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1064 var $img = data.$birdImg; |
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1065 return function () { |
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1066 console.debug("birdimg loaded! this=", this, " data=", data); |
658
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1067 // create Transform from current area and picsize |
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1068 data.birdTrafo = getImgTrafo($img, MAX_ZOOMAREA); |
668 | 1069 // display red indicator around zoomarea |
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1070 renderbirdZoom(data); |
613
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1071 }; |
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1072 }; |
633 | 1073 |
1074 // place marks on the image | |
1075 var renderMarks = function (data) { | |
647 | 1076 var $elem = data.$elem; |
643 | 1077 var marks = data.marks; |
649 | 1078 // TODO: clear marks first(?) |
633 | 1079 for (var i = 0; i < marks.length; i++) { |
1080 var mark = marks[i]; | |
643 | 1081 if (data.zoomArea.containsPosition(mark)) { |
633 | 1082 var mpos = data.imgTrafo.transform(mark); |
664
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1083 console.debug("renderMarks: mpos=",mpos); |
633 | 1084 // create mark |
1085 var html = '<div class="mark">'+(i+1)+'</div>'; | |
1086 var $mark = $(html); | |
1087 $elem.append($mark); | |
654 | 1088 $mark.offset({left : mpos.x, top : mpos.y}); |
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1089 } |
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1090 } |
633 | 1091 }; |
655 | 1092 |
677
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1093 // show zoom area indicator on bird's eye view |
678
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1094 var renderbirdZoom = function (data) { |
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1095 var $birdZoom = data.$birdZoom; |
659 | 1096 var zoomArea = data.zoomArea; |
1097 var indRect = data.birdTrafo.transform(zoomArea); | |
670
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1098 var coords = { |
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1099 left : indRect.x-2, // acount for frame width |
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1100 top : indRect.y-2, |
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1101 width : indRect.width, |
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1102 height: indRect.height |
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1103 }; |
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1104 var normalSize = isFullArea(zoomArea); |
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1105 if (data.settings.interactionMode === 'fullscreen') { |
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1106 // no animation for fullscreen |
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1107 if (normalSize) return $birdZoom.hide(); |
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1108 $birdZoom.width(coords.width); |
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1109 $birdZoom.height(coords.height); |
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1110 $birdZoom.offset(coords); |
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1111 $birdZoom.show(); |
670
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1112 return; |
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1113 } |
670
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1114 // nice animation for embedded mode :-) |
678
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1115 var makeCompleteFunction = function($birdZoom, normalSize) { |
670
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1116 return function() { |
678
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1117 if (normalSize) $birdZoom.hide(); |
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1118 }; |
670
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1119 }; |
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1120 var opts = { |
678
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1121 'complete' : makeCompleteFunction($birdZoom, normalSize) |
670
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1122 }; |
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1123 if (!normalSize && $birdZoom.css('display') === 'none') $birdZoom.show(); |
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1124 $birdZoom.animate(coords, opts); |
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1125 }; |
659 | 1126 |
647 | 1127 // zooms by the given factor |
643 | 1128 var zoomBy = function(data, factor) { |
1129 var area = data.zoomArea; | |
1130 var newarea = area.copy(); | |
1131 // scale | |
1132 newarea.width /= factor; | |
1133 newarea.height /= factor; | |
1134 // and recenter | |
1135 newarea.x -= 0.5 * (newarea.width - area.width); | |
1136 newarea.y -= 0.5 * (newarea.height - area.height); | |
1137 newarea = MAX_ZOOMAREA.fit(newarea); | |
1138 data.zoomArea = newarea; | |
644
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1139 redisplay(data); |
643 | 1140 }; |
1141 | |
647 | 1142 // add a mark where clicked |
1143 var setMark = function (data) { | |
649 | 1144 var $scaler = data.$scaler; |
647 | 1145 // start event capturing |
649 | 1146 $scaler.one('click.digilib', function (evt) { |
647 | 1147 // event handler adding a new mark |
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1148 var mpos = geom.position(evt); |
647 | 1149 var pos = data.imgTrafo.invtransform(mpos); |
1150 data.marks.push(pos); | |
1151 redisplay(data); | |
649 | 1152 return false; // do we even get here? |
647 | 1153 }); |
1154 }; | |
668 | 1155 |
654 | 1156 var zoomArea = function(data) { |
1157 $elem = data.$elem; | |
1158 $scaler = data.$scaler; | |
1159 var pt1, pt2; | |
1160 var $zoomDiv = $('<div class="zoomrect" style="display:none"/>'); | |
1161 $elem.append($zoomDiv); | |
668 | 1162 $zoomDiv.css(data.settings.zoomrectStyle); |
654 | 1163 var picRect = geom.rectangle($scaler); |
1164 // FIX ME: is there a way to query the border width from CSS info? | |
1165 // rect.x -= 2; // account for overlay borders | |
1166 // rect.y -= 2; | |
1167 | |
1168 var zoomStart = function (evt) { | |
1169 pt1 = geom.position(evt); | |
1170 // setup and show zoom div | |
1171 //moveElement(zoomdiv, Rectangle(pt1.x, pt1.y, 0, 0)); | |
1172 $zoomDiv.offset({left : pt1.x, top : pt1.y}); | |
668 | 1173 $zoomDiv.width(0).height(0); |
654 | 1174 $zoomDiv.show(); |
1175 // register events | |
1176 $elem.bind("mousemove.digilib", zoomMove); | |
1177 $elem.bind("mouseup.digilib", zoomEnd); | |
1178 return false; | |
1179 }; | |
668 | 1180 |
654 | 1181 // mouseup handler: end moving |
1182 var zoomEnd = function (evt) { | |
1183 pt2 = geom.position(evt); | |
1184 // assume a click and continue if the area is too small | |
1185 var clickRect = geom.rectangle(pt1, pt2); | |
710 | 1186 if (clickRect.getArea() <= 5) return false; |
654 | 1187 // hide zoom div |
1188 $zoomDiv.remove(); | |
1189 // unregister events | |
1190 $elem.unbind("mousemove.digilib", zoomMove); | |
1191 $elem.unbind("mouseup.digilib", zoomEnd); | |
1192 // clip and transform | |
1193 clickRect.clipTo(picRect); | |
1194 var area = data.imgTrafo.invtransform(clickRect); | |
1195 data.zoomArea = area; | |
1196 // zoomed is always fit | |
1197 data.settings.ws = 1; | |
1198 redisplay(data); | |
1199 return false; | |
1200 }; | |
668 | 1201 |
654 | 1202 // mouse move handler |
1203 var zoomMove = function (evt) { | |
1204 pt2 = geom.position(evt); | |
1205 var rect = geom.rectangle(pt1, pt2); | |
1206 rect.clipTo(picRect); | |
1207 // update zoom div | |
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1208 rect.adjustDiv($zoomDiv); |
654 | 1209 return false; |
1210 }; | |
668 | 1211 |
654 | 1212 // bind start zoom handler |
1213 $scaler.one('mousedown.digilib', zoomStart); | |
1214 }; | |
647 | 1215 |
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1216 var birdZoom = function(data) { |
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1217 var $birdImg = data.$birdImg; |
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1218 var $birdZoom = data.$birdZoom; |
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1219 var startPos, newRect, birdImgRect, birdZoomRect; |
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1220 |
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1221 var birdZoomMove = function(evt) { |
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1222 // mousemove handler: drag |
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1223 var pos = geom.position(evt); |
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1224 var dx = pos.x - startPos.x; |
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1225 var dy = pos.y - startPos.y; |
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1226 // move birdZoom div, keeping size |
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1227 newRect = geom.rectangle( |
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1228 birdZoomRect.x + dx, |
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1229 birdZoomRect.y + dy, |
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1230 birdZoomRect.width, |
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1231 birdZoomRect.height); |
678
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1232 // stay within birdimage |
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1233 newRect.stayInside(birdImgRect); |
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1234 $birdZoom.offset({left : newRect.x, top : newRect.y}); |
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1235 // $birdZoom.show(); |
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1236 return false; |
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1237 }; |
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1238 |
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1239 var birdZoomEndDrag = function(evt) { |
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1240 // mouseup handler: reload page |
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1241 var settings = data.settings; |
680 | 1242 $(document).unbind("mousemove.digilib", birdZoomMove); |
1243 $(document).unbind("mouseup.digilib", birdZoomEndDrag); | |
1244 $birdZoom.unbind("mousemove.digilib", birdZoomMove); | |
1245 $birdZoom.unbind("mouseup.digilib", birdZoomEndDrag); | |
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1246 if (newRect == null) { // no movement happened |
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1247 startPos = birdZoomRect.getCenter(); |
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1248 birdZoomMove(evt); // set center to click position |
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1249 } |
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1250 if (data.zoomArea) { |
679 | 1251 // should always be true |
1252 var x = cropFloat((newRect.x - birdImgRect.x + 2) / birdImgRect.width); | |
1253 var y = cropFloat((newRect.y - birdImgRect.y + 2) / birdImgRect.height); | |
1254 data.zoomArea.x = x; | |
1255 data.zoomArea.y = y; | |
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1256 } |
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1257 settings.ws = 1; // zoomed is always fit |
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1258 redisplay(data); |
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1259 return false; |
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1260 }; |
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1261 |
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1262 var birdZoomStartDrag = function(evt) { |
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1263 // mousedown handler: start dragging bird zoom to a new position |
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1264 startPos = geom.position(evt); |
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1265 birdImgRect = geom.rectangle($birdImg); |
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1266 birdZoomRect = geom.rectangle($birdZoom); |
680 | 1267 $(document).bind("mousemove.digilib", birdZoomMove); |
1268 $(document).bind("mouseup.digilib", birdZoomEndDrag); | |
1269 $birdZoom.bind("mousemove.digilib", birdZoomMove); | |
1270 $birdZoom.bind("mouseup.digilib", birdZoomEndDrag); | |
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1271 return false; |
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1272 }; |
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1273 |
681 | 1274 $birdImg.bind("mousedown.digilib", birdZoomStartDrag); |
1275 $birdZoom.bind("mousedown.digilib", birdZoomStartDrag); | |
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1276 }; |
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1277 |
705 | 1278 var setupZoomDrag = function(data) { |
1279 // setup handlers for dragging the zoomed image | |
1280 var pt1, pt2; | |
1281 var dx = 0; | |
1282 var dy = 0; | |
1283 var $elem = data.$elem; | |
1284 var $scaler = data.$scaler; | |
1285 var $img = data.$img; | |
707 | 1286 var $bg = $elem.has('div.bgDrag'); |
1287 if ($bg.length === 0) { | |
1288 $bg = $('<div class="bgDrag" style="display:none; position:absolute"/>'); | |
1289 $scaler.before($bg); // set as background | |
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1290 } |
710 | 1291 |
705 | 1292 var dragStart = function (evt) { |
1293 // drag the image and load a new detail on mouse up | |
1294 // useless if not zoomed | |
1295 if (isFullArea(data.zoomArea)) return false; | |
1296 pt1 = geom.position(evt); | |
1297 $imgRect = geom.rectangle($img); | |
1298 $imgRect.adjustDiv($bg); // set background size | |
1299 // hide the scaler image, show it as background of div instead | |
1300 $bg.css({ | |
1301 'background-image' : 'url(' + $img.attr('src') + ')', | |
1302 'background-repeat' : 'no-repeat', | |
706 | 1303 'background-position' : 'top left', |
705 | 1304 'cursor' : 'move' |
1305 }); | |
1306 $img.hide(); | |
1307 $bg.show(); | |
1308 $(document).bind("mousemove.digilib", dragMove); | |
1309 $(document).bind("mouseup.digilib", dragEnd); | |
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1310 return false; |
705 | 1311 }; |
710 | 1312 |
705 | 1313 var dragMove = function (evt) { |
1314 // mousemove handler: drag | |
1315 var pos = geom.position(evt); | |
1316 dx = pos.x - pt1.x; | |
1317 dy = pos.y - pt1.y; | |
1318 // move the background image to the new position | |
1319 $bg.css({ | |
1320 'background-position' : dx + "px " + dy + "px" | |
1321 }); | |
1322 return false; | |
1323 }; | |
710 | 1324 |
705 | 1325 var dragEnd = function (evt) { |
1326 // mouseup handler: reload digilib | |
1327 $bg.css({ | |
1328 'cursor' : 'default' | |
1329 }); | |
1330 $(document).unbind("mousemove.digilib", dragMove); | |
1331 $(document).unbind("mouseup.digilib", dragEnd); | |
1332 // calculate relative offset | |
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1333 if (dx === 0 && dy === 0) return false; // no movement |
705 | 1334 // reload with scaler image showing the new ausschnitt |
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1335 // digilib.moveBy(x, y); |
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1336 var pos = geom.position(-dx, -dy); |
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1337 var newPos = data.imgTrafo.invtransform(pos); |
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1338 var newArea = data.zoomArea.setPt1(newPos); |
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1339 data.zoomArea = MAX_ZOOMAREA.fit(newArea); |
706 | 1340 $bg.hide(); |
708
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1341 redisplay(data); |
705 | 1342 return false; |
1343 }; | |
1344 | |
1345 $scaler.bind("mousedown.digilib", dragStart); | |
1346 }; | |
1347 | |
703 | 1348 // get image quality as a number (0..2) |
1349 var getQuality = function (data) { | |
1350 var flags = data.scalerFlags; | |
1351 var q = flags.q2 || flags.q1 || 'q0'; // assume q0 as default | |
1352 return parseInt(q[1], 10); | |
706 | 1353 }; |
703 | 1354 |
1355 // set image quality as a number (0..2) | |
1356 var setQuality = function (data, qual) { | |
1357 var flags = data.scalerFlags; | |
1358 // clear flags | |
1359 for (var i = 0; i < 3; ++i) { | |
1360 delete flags['q'+i]; | |
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1361 } |
703 | 1362 flags['q'+qual] = 'q'+qual; |
706 | 1363 }; |
710 | 1364 |
650 | 1365 // sets a key to a value (relative values with +/- if relative=true) |
1366 var setNumValue = function(settings, key, value) { | |
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1367 if (isNumber(value)) { |
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1368 settings[key] = value; |
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1369 return value; |
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1370 } |
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1371 var sign = value[0]; |
650 | 1372 if (sign === '+' || sign === '-') { |
1373 if (settings[key] == null) { | |
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1374 // this isn't perfect but still... |
650 | 1375 settings[key] = 0; |
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1376 } |
650 | 1377 settings[key] = parseFloat(settings[key]) + parseFloat(value); |
1378 } else { | |
1379 settings[key] = value; | |
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1380 } |
650 | 1381 return settings[key]; |
1382 }; | |
655 | 1383 |
1384 // auxiliary function (from old dllib.js) | |
659 | 1385 isFullArea = function(area) { |
1386 return (area.width === 1.0) && (area.height === 1.0); | |
655 | 1387 }; |
1388 | |
641 | 1389 // auxiliary function (from Douglas Crockford, A.10) |
1390 var isNumber = function isNumber(value) { | |
710 | 1391 return typeof value === 'number' && isFinite(value); |
641 | 1392 }; |
655 | 1393 |
631 | 1394 // auxiliary function to crop senseless precision |
1395 var cropFloat = function (x) { | |
637 | 1396 return parseInt(10000 * x, 10) / 10000; |
631 | 1397 }; |
655 | 1398 |
692 | 1399 // fallback for console.log calls |
1400 if (customConsole) { | |
1401 var logFunction = function(type) { | |
1402 return function(){ | |
1403 var $debug = $('#debug'); // debug div | |
1404 if (!$debug) return; | |
1405 var args = Array.prototype.slice.call(arguments); | |
1406 var argtext = args.join(' '); | |
1407 var $logDiv = $('<div/>'); | |
1408 $logDiv.addClass(type); | |
1409 $logDiv.text(argtext); | |
1410 $debug.append($logDiv); | |
1411 }; | |
1412 }; | |
1413 console.log = logFunction('_log'); | |
1414 console.debug = logFunction('_debug'); | |
1415 console.error = logFunction('_error'); | |
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1416 } |
692 | 1417 |
605 | 1418 // hook plugin into jquery |
651
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1419 $.fn.digilib = function(action) { |
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1420 if (actions[action]) { |
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1421 // call action on this with the remaining arguments (inserting data as first argument) |
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1422 var $elem = $(this); |
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1423 var data = $elem.data('digilib'); |
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1424 var args = Array.prototype.slice.call(arguments, 1); |
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1425 args.unshift(data); |
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1426 return actions[action].apply(this, args); |
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1427 } else if (typeof(action) === 'object' || !action) { |
634 | 1428 // call init on this |
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1429 return actions.init.apply(this, arguments); |
605 | 1430 } else { |
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1431 $.error('action ' + action + ' does not exist on jQuery.digilib'); |
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1432 } |
605 | 1433 }; |
692 | 1434 |
604 | 1435 })(jQuery); |