Mercurial > hg > digilib-old
annotate client/digitallibrary/jquery/jquery.digilib.js @ 726:6224f64cbd58 jquery
fixed birdZoomDiv positioning in embedded mode
author | robcast |
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date | Tue, 01 Feb 2011 00:12:02 +0100 |
parents | 936d88972cd0 |
children | fc61c6b02c78 |
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 : { | |
716 | 80 onclick : "gotoPage", |
81 tooltip : "goto image number", | |
610 | 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'], |
644
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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', |
651
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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/', |
721 | 223 'standardSet' : ["reference","zoomin","zoomout","zoomarea","zoomfull","pagewidth","back","fwd","page","bird","help","reset","toggleoptions"], |
224 'specialSet' : ["mark","delmark","hmir","vmir","rot","brgt","cont","rgb","quality","size","calibrationx","scale","toggleoptions"], | |
682 | 225 'buttonSets' : ['standardSet', 'specialSet'] |
665 | 226 }, |
227 'embedded' : { | |
228 'imagePath' : 'img/embedded/16/', | |
721 | 229 'standardSet' : ["reference","zoomin","zoomout","zoomarea","zoomfull","back","fwd","page","bird","help","reset","toggleoptions"], |
230 'specialSet' : ["hmir","vmir","rot","brgt","cont","rgb","quality","size","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, | |
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241 // parameters used by bird's eye div |
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242 'birdDivParams' : ['fn','pn','dw','dh'], |
668 | 243 // style of the zoom area indicator in the bird's eye div |
659 | 244 'birdIndicatorStyle' : {'border' : '2px solid #ff0000' }, |
668 | 245 // style of zoom area "rubber band" |
246 'zoomrectStyle' : {'border' : '2px solid #ff0000' }, | |
616 | 247 // is the "about" window shown? |
248 'isAboutDivVisible' : false | |
249 | |
610 | 250 }; |
655 | 251 |
608 | 252 // affine geometry classes |
253 var geom = dlGeometry(); | |
655 | 254 |
643 | 255 var MAX_ZOOMAREA = geom.rectangle(0, 0, 1, 1); |
655 | 256 |
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257 var actions = { |
668 | 258 // init: digilib initialization |
259 init : function(options) { | |
260 // settings for this digilib instance are merged from defaults and options | |
261 var settings = $.extend({}, defaults, options); | |
262 var isFullscreen = settings.interactionMode === 'fullscreen'; | |
263 var queryParams = {}; | |
264 if (isFullscreen) { | |
265 queryParams = parseQueryParams(); | |
266 // check scalerBaseUrl | |
267 if (settings.scalerBaseUrl == null) { | |
268 // try the host this came from | |
269 var h = window.location.host; | |
270 if (window.location.host) { | |
271 var url = window.location.href; | |
272 // assume the page lives in [webapp]/jquery/ | |
273 var pos = url.indexOf('jquery/'); | |
274 if (pos > 0) { | |
275 settings.scalerBaseUrl = url.substring(0, pos) + 'servlet/Scaler'; | |
652 | 276 } |
277 } | |
636 | 278 } |
668 | 279 } |
280 return this.each(function() { | |
281 var $elem = $(this); | |
282 var data = $elem.data('digilib'); | |
688 | 283 var params, elemSettings; |
668 | 284 // if the plugin hasn't been initialized yet |
285 if (!data) { | |
286 // merge query parameters | |
287 if (isFullscreen) { | |
688 | 288 params = queryParams; |
668 | 289 } else { |
688 | 290 params = parseImgParams($elem); |
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291 } |
668 | 292 // store $(this) element in the settings |
688 | 293 elemSettings = $.extend({}, settings, params); |
697 | 294 data = { |
668 | 295 $elem : $elem, |
296 settings : elemSettings, | |
688 | 297 queryParams : params |
668 | 298 }; |
299 // store in data element | |
300 $elem.data('digilib', data); | |
301 } | |
302 unpackParams(data); | |
682 | 303 // create HTML structure for scaler |
668 | 304 setupScalerDiv(data); |
697 | 305 // add buttons |
306 for (var i = 0; i < elemSettings.visibleButtonSets; ++i) { | |
307 showButtons(data, true, i); | |
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308 } |
668 | 309 // bird's eye view creation |
710 | 310 if (elemSettings.isBirdDivVisible) { |
638 | 311 setupBirdDiv(data); |
723 | 312 data.$birdDiv.show(); |
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313 } |
668 | 314 // about window creation - TODO: could be deferred? restrict to only one item? |
315 setupAboutDiv(data); | |
710 | 316 // TODO: the actual moving code |
707 | 317 setupZoomDrag(data); |
668 | 318 }); |
319 }, | |
320 | |
321 // destroy: clean up digilib | |
322 destroy : function(data) { | |
323 return this.each(function(){ | |
324 var $elem = $(this); | |
325 $(window).unbind('.digilib'); // unbind all digilibs(?) | |
326 data.digilib.remove(); | |
327 $elem.removeData('digilib'); | |
328 }); | |
329 }, | |
330 | |
331 // show or hide the 'about' window | |
332 showAboutDiv : function(data, show) { | |
333 data.settings.isAboutDivVisible = showDiv(data.settings.isAboutDivVisible, data.$aboutDiv, show); | |
334 }, | |
655 | 335 |
668 | 336 // event handler: toggles the visibility of the bird's eye window |
337 showBirdDiv : function (data, show) { | |
726 | 338 var settings = data.settings; |
668 | 339 if (data.$birdDiv == null) { |
340 // no bird div -> create | |
341 setupBirdDiv(data); | |
342 } | |
726 | 343 settings.isBirdDivVisible = showDiv(settings.isBirdDivVisible, data.$birdDiv, show); |
344 updateBirdDiv(data); | |
723 | 345 storeOptions(data); |
346 // data.$birdImg.triggerHandler('load'); // TODO: we shouldn't do that | |
668 | 347 }, |
348 | |
349 // goto given page nr (+/-: relative) | |
350 gotoPage : function (data, pageNr) { | |
351 var settings = data.settings; | |
352 var oldpn = settings.pn; | |
716 | 353 if (pageNr == null) { |
354 pageNr = window.prompt("Goto page number", oldpn); | |
355 } | |
668 | 356 var pn = setNumValue(settings, "pn", pageNr); |
357 if (pn == null) return false; // nothing happened | |
358 if (pn < 1) { | |
359 alert("no such page (page number too low)"); | |
360 settings.pn = oldpn; | |
361 return false; | |
362 } | |
363 if (settings.pt) { | |
364 if (pn > settings.pt) { | |
365 alert("no such page (page number too high)"); | |
623 | 366 settings.pn = oldpn; |
367 return false; | |
634 | 368 } |
668 | 369 } |
370 // reset mk and others(?) | |
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371 // TODO: adjust bird div |
668 | 372 data.marks = []; |
373 data.zoomArea = MAX_ZOOMAREA; | |
374 // then reload | |
375 redisplay(data); | |
376 }, | |
654 | 377 |
668 | 378 // zoom by a given factor |
379 zoomBy : function (data, factor) { | |
380 zoomBy(data, factor); | |
381 }, | |
647 | 382 |
668 | 383 // zoom interactively |
384 zoomArea : function (data) { | |
385 zoomArea(data); | |
386 }, | |
650 | 387 |
668 | 388 // zoom out to full page |
389 zoomFull : function (data, mode) { | |
390 data.zoomArea = MAX_ZOOMAREA; | |
391 if (mode === 'width') { | |
392 data.dlOpts.fitwidth = 1; | |
393 delete data.dlOpts.fitheight; | |
394 } else if (mode === 'height') { | |
395 data.dlOpts.fitheight = 1; | |
396 delete data.dlOpts.fitwidth; | |
397 } else { | |
398 delete data.dlOpts.fitwidth; | |
399 delete data.dlOpts.fitheight; | |
400 } | |
401 redisplay(data); | |
402 }, | |
403 | |
404 // set a mark by clicking (or giving a position) | |
405 setMark : function (data, mpos) { | |
406 if (mpos == null) { | |
407 // interactive | |
408 setMark(data); | |
409 } else { | |
410 // use position | |
411 data.marks.push(pos); | |
663 | 412 redisplay(data); |
604 | 413 } |
668 | 414 }, |
415 | |
416 // remove the last mark | |
417 removeMark : function (data) { | |
418 data.marks.pop(); | |
419 redisplay(data); | |
420 }, | |
421 | |
422 // mirror the image | |
423 mirror : function (data, mode) { | |
424 var flags = data.scalerFlags; | |
425 if (mode === 'h') { | |
426 if (flags.hmir) { | |
427 delete flags.hmir; | |
428 } else { | |
429 flags.hmir = 1; | |
430 } | |
431 } else { | |
432 if (flags.vmir) { | |
433 delete flags.vmir; | |
434 } else { | |
435 flags.vmir = 1; | |
436 } | |
437 } | |
438 redisplay(data); | |
439 }, | |
650 | 440 |
668 | 441 // rotate the image |
442 rotate : function (data, angle) { | |
443 var rot = data.settings.rot; | |
444 if (angle == null) { | |
445 angle = window.prompt("Rotation angle:", rot); | |
446 } | |
447 data.settings.rot = angle; | |
448 redisplay(data); | |
449 }, | |
450 | |
451 // change brightness | |
452 brightness : function (data, factor) { | |
453 var brgt = data.settings.brgt; | |
454 if (factor == null) { | |
455 factor = window.prompt("Brightness (-255..255)", brgt); | |
456 } | |
457 data.settings.brgt = factor; | |
458 redisplay(data); | |
459 }, | |
460 | |
461 // change contrast | |
462 contrast : function (data, factor) { | |
463 var cont = data.settings.cont; | |
464 if (factor == null) { | |
465 factor = window.prompt("Contrast (-8, 8)", cont); | |
466 } | |
467 data.settings.cont = factor; | |
468 redisplay(data); | |
688 | 469 }, |
710 | 470 |
690 | 471 // display more (or less) button sets |
472 morebuttons : function (data, more) { | |
696 | 473 var settings = data.settings; |
699 | 474 if (more == null) { |
703 | 475 // toggle more or less (only works for 2 sets) |
699 | 476 var maxbtns = settings.buttonSettings[settings.interactionMode].buttonSets.length; |
477 if (settings.visibleButtonSets >= maxbtns) { | |
478 more = '-1'; | |
479 } else { | |
480 more = '+1'; | |
481 } | |
482 } | |
690 | 483 if (more === '-1') { |
484 // remove set | |
697 | 485 var setIdx = settings.visibleButtonSets - 1; |
486 if (showButtons(data, false, setIdx, true)) { | |
487 settings.visibleButtonSets--; | |
488 } | |
690 | 489 } else { |
490 // add set | |
697 | 491 var setIdx = settings.visibleButtonSets; |
492 if (showButtons(data, true, setIdx, true)) { | |
493 settings.visibleButtonSets++; | |
690 | 494 } |
495 } | |
723 | 496 // persist setting |
497 storeOptions(data); | |
691 | 498 }, |
688 | 499 |
703 | 500 // reset image parameters to defaults |
688 | 501 reset : function (data) { |
502 var settings = data.settings; | |
503 var paramNames = settings.digilibParamNames; | |
504 var params = data.queryParams; | |
709 | 505 // resets zoomArea, marks, scalerflags |
688 | 506 resetData(data); |
507 // delete all digilib parameters | |
508 for (var i = 0; i < paramNames.length; i++) { | |
509 var paramName = paramNames[i]; | |
510 delete settings[paramName]; | |
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511 } |
688 | 512 // fullscreen: restore only fn/pn parameters |
513 if (settings.interactionMode === 'fullscreen') { | |
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514 settings.fn = params.fn || ''; // no default defined |
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515 settings.pn = params.pn || defaults.pn; |
688 | 516 // embedded: restore original parameters |
517 } else { | |
518 $.extend(settings, params); | |
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519 } |
709 | 520 // TODO: should we really reset all user preferences here? |
521 settings.isBirdDivVisible = false; | |
522 settings.visibleButtonSets = 1; | |
712 | 523 delete data.dlOpts.fitwidth; |
524 delete data.dlOpts.fitheight; | |
688 | 525 redisplay(data); |
689 | 526 }, |
527 | |
703 | 528 // presents a reference url (returns value if noprompt) |
529 reference : function (data, noprompt) { | |
689 | 530 var settings = data.settings; |
531 var url; | |
532 if (settings.interactionMode === 'fullscreen') { | |
533 url = getDigilibUrl(data); | |
534 } else { | |
535 url = getScalerUrl(data); | |
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536 } |
703 | 537 if (noprompt == null) { |
538 window.prompt("URL reference to the current view", url); | |
539 } | |
540 return url; | |
541 }, | |
710 | 542 |
703 | 543 // set image quality |
544 setquality : function (data, qual) { | |
545 var oldq = getQuality(data); | |
546 if (qual == null) { | |
547 qual = window.prompt("Image quality (0..2)", oldq); | |
548 } | |
549 qual = parseInt(qual, 10); | |
550 if (qual >= 0 && qual <= 2) { | |
551 setQuality(data, qual); | |
552 redisplay(data); | |
553 } | |
668 | 554 } |
605 | 555 }; |
604 | 556 |
608 | 557 // returns parameters from page url |
607 | 558 var parseQueryParams = function() { |
636 | 559 return parseQueryString(window.location.search.slice(1)); |
560 }; | |
655 | 561 |
636 | 562 // returns parameters from embedded img-element |
607 | 563 var parseImgParams = function($elem) { |
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564 var src = $elem.find('img').first().attr('src'); |
710 | 565 if (!src) return null; |
607 | 566 var pos = src.indexOf('?'); |
567 var query = (pos < 0) ? '' : src.substring(pos + 1); | |
568 var scalerUrl = src.substring(0, pos); | |
627 | 569 var params = parseQueryString(query); |
570 params.scalerBaseUrl = scalerUrl; | |
571 return params; | |
636 | 572 }; |
607 | 573 |
608 | 574 // parses query parameter string into parameter object |
607 | 575 var parseQueryString = function(query) { |
701 | 576 var params = {}; |
577 if (query == null) return params; | |
607 | 578 var pairs = query.split("&"); |
636 | 579 //var keys = []; |
607 | 580 for (var i = 0; i < pairs.length; i++) { |
581 var pair = pairs[i].split("="); | |
582 if (pair.length === 2) { | |
627 | 583 params[pair[0]] = pair[1]; |
636 | 584 //keys.push(pair[0]); |
634 | 585 } |
636 | 586 } |
627 | 587 return params; |
636 | 588 }; |
668 | 589 |
643 | 590 // returns a query string from key names from a parameter hash (ignoring if the same value is in defaults) |
591 var getParamString = function (settings, keys, defaults) { | |
615 | 592 var paramString = ''; |
650 | 593 var nx = false; |
615 | 594 for (i = 0; i < keys.length; ++i) { |
595 var key = keys[i]; | |
663 | 596 if ((settings[key] != null) && ((defaults == null) || (settings[key] != defaults[key]))) { |
615 | 597 // first param gets no '&' |
650 | 598 if (nx) { |
599 paramString += '&'; | |
600 } else { | |
601 nx = true; | |
602 } | |
615 | 603 // add parm=val |
604 paramString += key + '=' + settings[key]; | |
643 | 605 } |
615 | 606 } |
607 return paramString; | |
631 | 608 }; |
609 | |
636 | 610 // returns URL and query string for Scaler |
611 var getScalerUrl = function (data) { | |
653 | 612 var settings = data.settings; |
652 | 613 if (settings.scalerBaseUrl == null) { |
614 alert("ERROR: URL of digilib Scaler servlet missing!"); | |
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615 } |
665 | 616 packParams(data); |
636 | 617 var keys = settings.scalerParamNames; |
643 | 618 var queryString = getParamString(settings, keys, defaults); |
636 | 619 var url = settings.scalerBaseUrl + '?' + queryString; |
620 return url; | |
621 }; | |
622 | |
623 // returns URL and query string for current digilib | |
644
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624 var getDigilibUrl = function (data) { |
643 | 625 packParams(data); |
636 | 626 var settings = data.settings; |
644
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627 var queryString = getParamString(settings, settings.digilibParamNames, defaults); |
636 | 628 var url = window.location.toString(); |
629 var pos = url.indexOf('?'); | |
630 var baseUrl = url.substring(0, pos); | |
631 var newurl = baseUrl + '?' + queryString; | |
632 return newurl; | |
633 }; | |
634 | |
655 | 635 // processes some parameters into objects and stuff |
631 | 636 var unpackParams = function (data) { |
637 var settings = data.settings; | |
636 | 638 // zoom area |
631 | 639 var zoomArea = geom.rectangle(settings.wx, settings.wy, settings.ww, settings.wh); |
643 | 640 data.zoomArea = zoomArea; |
636 | 641 // marks |
631 | 642 var marks = []; |
650 | 643 if (settings.mk) { |
644 var mk = settings.mk; | |
645 if (mk.indexOf(";") >= 0) { | |
646 var pa = mk.split(";"); // old format with ";" | |
647 } else { | |
648 var pa = mk.split(","); // new format | |
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649 } |
650 | 650 for (var i = 0; i < pa.length ; i++) { |
651 var pos = pa[i].split("/"); | |
652 if (pos.length > 1) { | |
653 marks.push(geom.position(pos[0], pos[1])); | |
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654 } |
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655 } |
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656 } |
643 | 657 data.marks = marks; |
650 | 658 // mo (Scaler flags) |
659 var flags = {}; | |
660 if (settings.mo) { | |
661 var pa = settings.mo.split(","); | |
662 for (var i = 0; i < pa.length ; i++) { | |
663 flags[pa[i]] = pa[i]; | |
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664 } |
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665 } |
650 | 666 data.scalerFlags = flags; |
723 | 667 retrieveOptions(data); |
655 | 668 }; |
669 | |
631 | 670 // put objects back into parameters |
671 var packParams = function (data) { | |
672 var settings = data.settings; | |
636 | 673 // zoom area |
643 | 674 if (data.zoomArea) { |
647 | 675 settings.wx = cropFloat(data.zoomArea.x); |
676 settings.wy = cropFloat(data.zoomArea.y); | |
677 settings.ww = cropFloat(data.zoomArea.width); | |
678 settings.wh = cropFloat(data.zoomArea.height); | |
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679 } |
636 | 680 // marks |
643 | 681 if (data.marks) { |
650 | 682 settings.mk = ''; |
643 | 683 for (var i = 0; i < data.marks.length; i++) { |
650 | 684 if (i) { |
685 settings.mk += ','; | |
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686 } |
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687 settings.mk += cropFloat(data.marks[i].x).toString() + |
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688 '/' + cropFloat(data.marks[i].y).toString(); |
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689 } |
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690 } |
650 | 691 // Scaler flags |
692 if (data.scalerFlags) { | |
693 var mo = ''; | |
694 for (var f in data.scalerFlags) { | |
695 if (mo) { | |
696 mo += ','; | |
697 } | |
698 mo += f; | |
699 } | |
700 settings.mo = mo; | |
701 } | |
710 | 702 // user interface options |
723 | 703 storeOptions(data); |
709 | 704 }; |
688 | 705 |
723 | 706 var storeOptions = function (data) { |
701 | 707 // save digilib options in cookie |
709 | 708 // TODO: in embedded mode this is not called |
701 | 709 /* store in parameter clop |
710 * if (data.dlOpts) { | |
711 var clop = ''; | |
712 for (var o in data.dlOpts) { | |
713 if (clop) { | |
650 | 714 clop += ','; |
715 } | |
716 clop += o; | |
717 } | |
718 settings.clop = clop; | |
701 | 719 } */ |
709 | 720 var settings = data.settings; |
721 if (data.dlOpts) { | |
722 // save digilib settings in options | |
723 data.dlOpts.birdview = settings.isBirdDivVisible ? 1 : 0; | |
724 data.dlOpts.buttons = settings.visibleButtonSets; | |
725 var clop = ''; | |
726 for (var o in data.dlOpts) { | |
727 if (clop) { | |
728 clop += '&'; | |
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729 } |
709 | 730 clop += o + '=' + data.dlOpts[o]; |
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731 } |
709 | 732 if (jQuery.cookie) { |
733 var ck = "digilib:fn:" + escape(settings.fn) + ":pn:" + settings.pn; | |
734 console.debug("set cookie=", ck, " value=", clop); | |
735 jQuery.cookie(ck, clop); | |
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736 } |
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737 } |
631 | 738 }; |
655 | 739 |
723 | 740 var retrieveOptions = function (data) { |
709 | 741 // clop (digilib options) |
742 var opts = {}; | |
743 var settings = data.settings; | |
744 if (jQuery.cookie) { | |
745 /* read from parameter clop | |
746 * if (settings.clop) { | |
747 var pa = settings.clop.split(","); | |
748 for (var i = 0; i < pa.length ; i++) { | |
749 opts[pa[i]] = pa[i]; | |
750 } | |
751 } */ | |
752 // read from cookie | |
753 var ck = "digilib:fn:" + escape(settings.fn) + ":pn:" + settings.pn; | |
754 var cp = jQuery.cookie(ck); | |
755 console.debug("get cookie=", ck, " value=", cp); | |
756 // in query string format | |
757 opts = parseQueryString(cp); | |
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758 } |
709 | 759 data.dlOpts = opts; |
760 // birdview option | |
761 if (opts.birdview != null) { | |
762 settings.isBirdDivVisible = opts.birdview === '1'; | |
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763 } |
709 | 764 // visible button sets |
765 if (opts.buttons != null) { | |
766 settings.visibleButtonSets = opts.buttons; | |
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767 } |
711 | 768 }; |
709 | 769 |
688 | 770 // clear digilib data for reset |
771 var resetData = function (data) { | |
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772 // TODO: we should reset instead of delete |
688 | 773 if (data.zoomArea) delete data.zoomArea; |
774 if (data.marks) delete data.marks; | |
775 if (data.scalerFlags) delete data.scalerFlags; | |
776 }; | |
777 | |
622 | 778 // (re)load the img from a new scaler URL |
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779 var redisplay = function (data) { |
636 | 780 var settings = data.settings; |
781 if (settings.interactionMode === 'fullscreen') { | |
782 // update location.href (browser URL) in fullscreen mode | |
644
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783 var url = getDigilibUrl(data); |
636 | 784 var history = window.history; |
785 if (typeof(history.pushState) === 'function') { | |
786 console.debug("we could modify history, but we don't..."); | |
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787 } |
636 | 788 window.location = url; |
789 } else { | |
790 // embedded mode -- just change img src | |
791 var url = getScalerUrl(data); | |
792 data.$img.attr('src', url); | |
726 | 793 // redisplay bird img |
794 updateBirdDiv(data); | |
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795 } |
622 | 796 }; |
797 | |
662 | 798 // returns maximum size for scaler img in fullscreen mode |
799 var getFullscreenImgSize = function($elem) { | |
800 var $win = $(window); | |
801 var winH = $win.height(); | |
802 var winW = $win.width(); | |
803 // TODO: account for borders? | |
804 return geom.size(winW, winH); | |
805 }; | |
806 | |
608 | 807 // creates HTML structure for digilib in elem |
627 | 808 var setupScalerDiv = function (data) { |
809 var settings = data.settings; | |
647 | 810 var $elem = data.$elem; |
725 | 811 $elem.addClass('digilib'); |
686 | 812 var $img, scalerUrl; |
813 // fullscreen | |
608 | 814 if (settings.interactionMode === 'fullscreen') { |
725 | 815 $elem.addClass('dl_fullscreen'); |
609 | 816 var imgSize = getFullscreenImgSize($elem); |
650 | 817 // fitwidth/height omits destination height/width |
715 | 818 // if (data.dlOpts['fitheight'] !== '1') { |
819 if (data.dlOpts['fitheight'] == null) { | |
650 | 820 settings.dw = imgSize.width; |
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821 } |
715 | 822 // if (data.dlOpts['fitwidth'] !== '1') { |
823 if (data.dlOpts['fitwidth'] == null) { | |
650 | 824 settings.dh = imgSize.height; |
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825 } |
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826 $img = $('<img/>'); |
686 | 827 scalerUrl = getScalerUrl(data); |
828 // embedded mode -- try to keep img tag | |
609 | 829 } else { |
725 | 830 $elem.addClass('dl_embedded'); |
623 | 831 $img = $elem.find('img'); |
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832 if ($img.length > 0) { |
686 | 833 console.debug("img detach:", $img); |
834 scalerUrl = $img.attr('src'); | |
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835 $img.detach(); |
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836 } else { |
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837 $img = $('<img/>'); |
686 | 838 scalerUrl = getScalerUrl(data); |
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839 } |
608 | 840 } |
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841 // create new html |
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842 $elem.empty(); // TODO: should we keep stuff for customization? |
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843 var $scaler = $('<div class="scaler"/>'); |
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844 $elem.append($scaler); |
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845 $scaler.append($img); |
622 | 846 $img.addClass('pic'); |
649 | 847 data.$scaler = $scaler; |
636 | 848 data.$img = $img; |
687 | 849 // setup image load handler before setting the src attribute (IE bug) |
850 $img.load(scalerImgLoadedHandler(data)); | |
851 $img.attr('src', scalerUrl); | |
608 | 852 }; |
615 | 853 |
610 | 854 // creates HTML structure for buttons in elem |
697 | 855 var createButtons = function (data, buttonSetIdx) { |
647 | 856 var $elem = data.$elem; |
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857 var settings = data.settings; |
665 | 858 var mode = settings.interactionMode; |
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859 var buttonSettings = settings.buttonSettings[mode]; |
682 | 860 var buttonGroup = buttonSettings.buttonSets[buttonSetIdx]; |
690 | 861 if (buttonGroup == null) { |
862 // no buttons here | |
863 return; | |
864 } | |
865 var $buttonsDiv = $('<div class="buttons"/>'); | |
682 | 866 var buttonNames = buttonSettings[buttonGroup]; |
867 for (var i = 0; i < buttonNames.length; i++) { | |
868 var buttonName = buttonNames[i]; | |
869 var buttonConfig = settings.buttons[buttonName]; | |
665 | 870 // construct the button html |
871 var $button = $('<div class="button"></div>'); | |
872 var $a = $('<a/>'); | |
873 var $img = $('<img class="button"/>'); | |
874 $buttonsDiv.append($button); | |
875 $button.append($a); | |
876 $a.append($img); | |
877 // add attributes and bindings | |
878 $button.attr('title', buttonConfig.tooltip); | |
682 | 879 $button.addClass('button-' + buttonName); |
665 | 880 // create handler for the buttons |
881 $a.bind('click.digilib', (function () { | |
882 // we create a new closure to capture the value of action | |
883 var action = buttonConfig.onclick; | |
884 if ($.isArray(action)) { | |
885 // the handler function calls digilib with action and parameters | |
886 return function (evt) { | |
887 console.debug('click action=', action, ' evt=', evt); | |
888 $elem.digilib.apply($elem, action); | |
889 return false; | |
890 }; | |
891 } else { | |
892 // the handler function calls digilib with action | |
893 return function (evt) { | |
894 console.debug('click action=', action, ' evt=', evt); | |
895 $elem.digilib(action); | |
896 return false; | |
897 }; | |
898 } | |
899 })()); | |
900 $img.attr('src', buttonSettings.imagePath + buttonConfig.img); | |
690 | 901 } |
662 | 902 // make buttons div scroll if too large for window |
903 if ($buttonsDiv.height() > $(window).height() - 10) { | |
904 $buttonsDiv.css('position', 'absolute'); | |
905 } | |
697 | 906 // buttons hidden at first |
907 $buttonsDiv.hide(); | |
908 $elem.append($buttonsDiv); | |
682 | 909 if (data.$buttonSets == null) { |
697 | 910 // first button set |
682 | 911 data.$buttonSets = [$buttonsDiv]; |
912 } else { | |
690 | 913 $elem.append($buttonsDiv); |
682 | 914 data.$buttonSets[buttonSetIdx] = $buttonsDiv; |
915 } | |
612 | 916 return $buttonsDiv; |
610 | 917 }; |
615 | 918 |
723 | 919 // returns URL for bird's eye view image |
920 var getBirdImgUrl = function (data) { | |
921 var settings = data.settings; | |
922 var birdDivOptions = { | |
923 dw : settings.birdDivWidth, | |
924 dh : settings.birdDivHeight | |
925 }; | |
926 var birdSettings = $.extend({}, settings, birdDivOptions); | |
927 // use only the relevant parameters | |
928 var birdUrl = settings.scalerBaseUrl + '?' + | |
929 getParamString(birdSettings, settings.birdDivParams); | |
930 return birdUrl; | |
931 }; | |
932 | |
615 | 933 // creates HTML structure for the bird's eye view in elem |
638 | 934 var setupBirdDiv = function (data) { |
647 | 935 var $elem = data.$elem; |
615 | 936 // the bird's eye div |
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937 var $birdDiv = $('<div class="birdview" style="display:none"/>'); |
615 | 938 // the detail indicator frame |
726 | 939 var $birdZoom = $('<div class="birdzoom" style="display:none; background-color:transparent;"/>'); |
615 | 940 // the small image |
941 var $birdImg = $('<img class="birdimg"/>'); | |
723 | 942 data.$birdDiv = $birdDiv; |
943 data.$birdZoom = $birdZoom; | |
944 data.$birdImg = $birdImg; | |
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945 $elem.append($birdDiv); |
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946 $birdDiv.append($birdZoom); |
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947 $birdDiv.append($birdImg); |
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948 $birdZoom.css(data.settings.birdIndicatorStyle); |
723 | 949 var birdUrl = getBirdImgUrl(data); |
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950 $birdImg.load(birdImgLoadedHandler(data)); |
723 | 951 $birdImg.attr('src', birdUrl); |
952 }; | |
953 | |
954 // update bird's eye view | |
955 var updateBirdDiv = function (data) { | |
956 if (!data.settings.isBirdDivVisible) return; | |
957 var $birdImg = data.$birdImg; | |
958 var oldsrc = $birdImg.attr('src'); | |
959 var newsrc = getBirdImgUrl(data); | |
960 if (oldsrc !== newsrc) { | |
961 $birdImg.attr('src', newsrc); | |
962 // onload handler re-renders | |
963 } else { | |
964 // re-render | |
965 renderBirdArea(data); | |
966 } | |
719
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967 }; |
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968 |
625 | 969 // creates HTML structure for the about view in elem |
628
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970 var setupAboutDiv = function (data) { |
647 | 971 var $elem = data.$elem; |
628
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972 var settings = data.settings; |
625 | 973 var $aboutDiv = $('<div class="about" style="display:none"/>'); |
616 | 974 var $header = $('<p>Digilib Graphic Viewer</p>'); |
975 var $link = $('<a/>'); | |
976 var $logo = $('<img class="logo" title="digilib"/>'); | |
977 var $content = $('<p/>'); | |
978 $elem.append($aboutDiv); | |
979 $aboutDiv.append($header); | |
980 $aboutDiv.append($link); | |
981 $aboutDiv.append($content); | |
982 $link.append($logo); | |
983 $logo.attr('src', settings.logoUrl); | |
635 | 984 $link.attr('href', settings.homeUrl); |
616 | 985 $content.text('Version: ' + settings.version); |
635 | 986 // click hides |
649 | 987 $aboutDiv.bind('click.digilib', function () { |
646 | 988 settings.isAboutDivVisible = showDiv(settings.isAboutDivVisible, $aboutDiv, 0); |
649 | 989 return false; |
710 | 990 }); |
635 | 991 data.$aboutDiv = $aboutDiv; |
634 | 992 }; |
993 | |
635 | 994 // shows some window e.g. 'about' (toggle visibility if show is null) |
995 var showDiv = function (isVisible, $div, show) { | |
645 | 996 if (show == null) { |
635 | 997 // toggle visibility |
998 isVisible = !isVisible; | |
999 } else { | |
1000 // set visibility | |
1001 isVisible = show; | |
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1002 } |
635 | 1003 if (isVisible) { |
1004 $div.fadeIn(); | |
1005 } else { | |
1006 $div.fadeOut(); | |
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1007 } |
635 | 1008 return isVisible; |
634 | 1009 }; |
616 | 1010 |
697 | 1011 // display more (or less) button sets |
1012 var showButtons = function (data, more, setIdx, animated) { | |
711 | 1013 var atime = animated ? 'fast': 0; |
697 | 1014 if (more) { |
1015 // add set | |
1016 var $otherSets = data.$elem.find('div.buttons:visible'); | |
1017 var $set; | |
1018 if (data.$buttonSets && data.$buttonSets[setIdx]) { | |
1019 // set exists | |
1020 $set = data.$buttonSets[setIdx]; | |
1021 } else { | |
1022 $set = createButtons(data, setIdx); | |
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1023 } |
697 | 1024 if ($set == null) return false; |
1025 var btnWidth = $set.width(); | |
1026 // move remaining sets left and show new set | |
711 | 1027 if ($otherSets.length > 0) { |
1028 $otherSets.animate({right : '+='+btnWidth+'px'}, atime, | |
1029 function () {$set.show();}); | |
697 | 1030 } else { |
1031 $set.show(); | |
711 | 1032 } |
697 | 1033 } else { |
1034 // remove set | |
1035 var $set = data.$buttonSets[setIdx]; | |
1036 if ($set == null) return false; | |
1037 var btnWidth = $set.width(); | |
1038 // hide last set | |
1039 $set.hide(); | |
1040 // take remaining sets and move right | |
1041 var $otherSets = data.$elem.find('div.buttons:visible'); | |
711 | 1042 $otherSets.animate({right : '-='+btnWidth+'px'}, atime); |
1043 } | |
697 | 1044 return true; |
1045 }; | |
1046 | |
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1047 // create Transform from area and $img |
675 | 1048 var getImgTrafo = function ($img, area, rot, hmir, vmir) { |
658
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1049 var picrect = geom.rectangle($img); |
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1050 var trafo = geom.transform(); |
675 | 1051 // move zoom area offset to center |
658
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1052 trafo.concat(trafo.getTranslation(geom.position(-area.x, -area.y))); |
675 | 1053 // scale zoom area size to [1,1] |
658
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1054 trafo.concat(trafo.getScale(geom.size(1/area.width, 1/area.height))); |
675 | 1055 // rotate and mirror (around transformed image center i.e. [0.5,0.5]) |
1056 if (rot || hmir || vmir) { | |
1057 // move [0.5,0.5] to center | |
1058 trafo.concat(trafo.getTranslation(geom.position(-0.5, -0.5))); | |
1059 if (hmir) { | |
1060 // mirror about center | |
1061 trafo.concat(trafo.getMirror('y')); | |
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1062 } |
675 | 1063 if (vmir) { |
1064 // mirror about center | |
1065 trafo.concat(trafo.getMirror('x')); | |
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1066 } |
675 | 1067 if (rot) { |
1068 // rotate around center | |
1069 trafo.concat(trafo.getRotation(parseFloat(rot))); | |
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1070 } |
675 | 1071 // move back |
1072 trafo.concat(trafo.getTranslation(geom.position(0.5, 0.5))); | |
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1073 } |
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1074 // scale to screen position and size |
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1075 trafo.concat(trafo.getScale(picrect)); |
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1076 trafo.concat(trafo.getTranslation(picrect)); |
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1077 return trafo; |
655 | 1078 }; |
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1079 |
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1080 // returns function for load event of scaler img |
636 | 1081 var scalerImgLoadedHandler = function (data) { |
633 | 1082 return function () { |
723 | 1083 var $img = $(this); |
627 | 1084 console.debug("img loaded! this=", this, " data=", data); |
1085 // create Transform from current area and picsize | |
675 | 1086 data.imgTrafo = getImgTrafo($img, data.zoomArea, |
1087 data.settings.rot, data.scalerFlags.hmir, data.scalerFlags.vmir); | |
686 | 1088 console.debug("imgTrafo=", data.imgTrafo); |
720 | 1089 // set scaler div size explicitly in case $img is hidden (for zoomDrag) |
1090 var $imgRect = geom.rectangle(data.$img); | |
1091 console.debug("imgrect=", $imgRect); | |
1092 $imgRect.adjustDiv(data.$scaler); | |
715 | 1093 // show image in case it was hidden (for example in zoomDrag) |
1094 $img.show(); | |
627 | 1095 // display marks |
633 | 1096 renderMarks(data); |
695
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1097 // TODO: digilib.showArrows(); // show arrow overlays for zoom navigation |
658
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1098 }; |
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1099 }; |
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1100 |
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1101 // returns function for load event of bird's eye view img |
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1102 var birdImgLoadedHandler = function (data) { |
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1103 return function () { |
723 | 1104 var $img = $(this); |
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1105 console.debug("birdimg loaded! this=", this, " data=", data); |
658
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1106 // create Transform from current area and picsize |
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1107 data.birdTrafo = getImgTrafo($img, MAX_ZOOMAREA); |
668 | 1108 // display red indicator around zoomarea |
723 | 1109 renderBirdArea(data); |
1110 // enable click and drag | |
1111 birdMoveArea(data); | |
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1112 }; |
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1113 }; |
633 | 1114 |
1115 // place marks on the image | |
1116 var renderMarks = function (data) { | |
647 | 1117 var $elem = data.$elem; |
643 | 1118 var marks = data.marks; |
649 | 1119 // TODO: clear marks first(?) |
633 | 1120 for (var i = 0; i < marks.length; i++) { |
1121 var mark = marks[i]; | |
643 | 1122 if (data.zoomArea.containsPosition(mark)) { |
633 | 1123 var mpos = data.imgTrafo.transform(mark); |
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1124 console.debug("renderMarks: mpos=",mpos); |
633 | 1125 // create mark |
1126 var html = '<div class="mark">'+(i+1)+'</div>'; | |
1127 var $mark = $(html); | |
1128 $elem.append($mark); | |
654 | 1129 $mark.offset({left : mpos.x, top : mpos.y}); |
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1130 } |
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1131 } |
633 | 1132 }; |
655 | 1133 |
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1134 // show zoom area indicator on bird's eye view |
723 | 1135 var renderBirdArea = function (data) { |
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1136 var $birdZoom = data.$birdZoom; |
659 | 1137 var zoomArea = data.zoomArea; |
723 | 1138 var normalSize = isFullArea(zoomArea); |
1139 if (normalSize) { | |
1140 $birdZoom.hide(); | |
1141 return; | |
1142 } else { | |
1143 $birdZoom.show(); | |
1144 } | |
659 | 1145 var indRect = data.birdTrafo.transform(zoomArea); |
670
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1146 var coords = { |
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1147 left : indRect.x-2, // acount for frame width |
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1148 top : indRect.y-2, |
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1149 width : indRect.width, |
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1150 height: indRect.height |
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1151 }; |
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1152 if (data.settings.interactionMode === 'fullscreen') { |
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1153 // no animation for fullscreen |
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1154 $birdZoom.width(coords.width); |
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1155 $birdZoom.height(coords.height); |
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1156 $birdZoom.offset(coords); |
723 | 1157 } else { |
1158 // nice animation for embedded mode :-) | |
726 | 1159 var ppos = $birdZoom.offsetParent().offset(); |
1160 // correct offsetParent because animate is relative | |
1161 coords.left = (coords.left - ppos.left) + 'px' ; | |
1162 coords.top = (coords.top - ppos.top) + 'px'; | |
725 | 1163 $birdZoom.animate(coords); |
723 | 1164 } |
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1165 }; |
659 | 1166 |
647 | 1167 // zooms by the given factor |
643 | 1168 var zoomBy = function(data, factor) { |
1169 var area = data.zoomArea; | |
1170 var newarea = area.copy(); | |
1171 // scale | |
1172 newarea.width /= factor; | |
1173 newarea.height /= factor; | |
1174 // and recenter | |
1175 newarea.x -= 0.5 * (newarea.width - area.width); | |
1176 newarea.y -= 0.5 * (newarea.height - area.height); | |
1177 newarea = MAX_ZOOMAREA.fit(newarea); | |
1178 data.zoomArea = newarea; | |
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1179 redisplay(data); |
643 | 1180 }; |
1181 | |
647 | 1182 // add a mark where clicked |
1183 var setMark = function (data) { | |
649 | 1184 var $scaler = data.$scaler; |
647 | 1185 // start event capturing |
649 | 1186 $scaler.one('click.digilib', function (evt) { |
647 | 1187 // event handler adding a new mark |
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1188 var mpos = geom.position(evt); |
647 | 1189 var pos = data.imgTrafo.invtransform(mpos); |
1190 data.marks.push(pos); | |
1191 redisplay(data); | |
649 | 1192 return false; // do we even get here? |
647 | 1193 }); |
1194 }; | |
668 | 1195 |
654 | 1196 var zoomArea = function(data) { |
1197 $elem = data.$elem; | |
1198 $scaler = data.$scaler; | |
1199 var pt1, pt2; | |
1200 var $zoomDiv = $('<div class="zoomrect" style="display:none"/>'); | |
1201 $elem.append($zoomDiv); | |
668 | 1202 $zoomDiv.css(data.settings.zoomrectStyle); |
654 | 1203 var picRect = geom.rectangle($scaler); |
1204 // FIX ME: is there a way to query the border width from CSS info? | |
1205 // rect.x -= 2; // account for overlay borders | |
1206 // rect.y -= 2; | |
1207 | |
1208 var zoomStart = function (evt) { | |
1209 pt1 = geom.position(evt); | |
1210 // setup and show zoom div | |
1211 //moveElement(zoomdiv, Rectangle(pt1.x, pt1.y, 0, 0)); | |
1212 $zoomDiv.offset({left : pt1.x, top : pt1.y}); | |
668 | 1213 $zoomDiv.width(0).height(0); |
654 | 1214 $zoomDiv.show(); |
1215 // register events | |
1216 $elem.bind("mousemove.digilib", zoomMove); | |
1217 $elem.bind("mouseup.digilib", zoomEnd); | |
1218 return false; | |
1219 }; | |
668 | 1220 |
654 | 1221 // mouseup handler: end moving |
1222 var zoomEnd = function (evt) { | |
1223 pt2 = geom.position(evt); | |
1224 // assume a click and continue if the area is too small | |
1225 var clickRect = geom.rectangle(pt1, pt2); | |
710 | 1226 if (clickRect.getArea() <= 5) return false; |
654 | 1227 // hide zoom div |
1228 $zoomDiv.remove(); | |
1229 // unregister events | |
1230 $elem.unbind("mousemove.digilib", zoomMove); | |
1231 $elem.unbind("mouseup.digilib", zoomEnd); | |
1232 // clip and transform | |
1233 clickRect.clipTo(picRect); | |
1234 var area = data.imgTrafo.invtransform(clickRect); | |
1235 data.zoomArea = area; | |
1236 // zoomed is always fit | |
1237 data.settings.ws = 1; | |
1238 redisplay(data); | |
1239 return false; | |
1240 }; | |
668 | 1241 |
654 | 1242 // mouse move handler |
1243 var zoomMove = function (evt) { | |
1244 pt2 = geom.position(evt); | |
1245 var rect = geom.rectangle(pt1, pt2); | |
1246 rect.clipTo(picRect); | |
1247 // update zoom div | |
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1248 rect.adjustDiv($zoomDiv); |
654 | 1249 return false; |
1250 }; | |
668 | 1251 |
654 | 1252 // bind start zoom handler |
1253 $scaler.one('mousedown.digilib', zoomStart); | |
1254 }; | |
647 | 1255 |
723 | 1256 // bird's eye view zoom area click and drag handler |
1257 var birdMoveArea = function(data) { | |
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1258 var $birdImg = data.$birdImg; |
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1259 var $birdZoom = data.$birdZoom; |
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1260 var startPos, newRect, birdImgRect, birdZoomRect; |
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1261 |
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1262 var birdZoomMove = function(evt) { |
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1263 // mousemove handler: drag |
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1264 var pos = geom.position(evt); |
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1265 var dx = pos.x - startPos.x; |
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1266 var dy = pos.y - startPos.y; |
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1267 // move birdZoom div, keeping size |
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1268 newRect = geom.rectangle( |
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1269 birdZoomRect.x + dx, |
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1270 birdZoomRect.y + dy, |
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1271 birdZoomRect.width, |
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1272 birdZoomRect.height); |
678
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1273 // stay within birdimage |
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1274 newRect.stayInside(birdImgRect); |
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1275 $birdZoom.offset({left : newRect.x, top : newRect.y}); |
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1276 // $birdZoom.show(); |
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1277 return false; |
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1278 }; |
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1279 |
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1280 var birdZoomEndDrag = function(evt) { |
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1281 // mouseup handler: reload page |
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1282 var settings = data.settings; |
680 | 1283 $(document).unbind("mousemove.digilib", birdZoomMove); |
1284 $(document).unbind("mouseup.digilib", birdZoomEndDrag); | |
1285 $birdZoom.unbind("mousemove.digilib", birdZoomMove); | |
1286 $birdZoom.unbind("mouseup.digilib", birdZoomEndDrag); | |
678
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1287 if (newRect == null) { // no movement happened |
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1288 startPos = birdZoomRect.getCenter(); |
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1289 birdZoomMove(evt); // set center to click position |
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1290 } |
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1291 if (data.zoomArea) { |
679 | 1292 // should always be true |
1293 var x = cropFloat((newRect.x - birdImgRect.x + 2) / birdImgRect.width); | |
1294 var y = cropFloat((newRect.y - birdImgRect.y + 2) / birdImgRect.height); | |
1295 data.zoomArea.x = x; | |
1296 data.zoomArea.y = y; | |
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1297 } |
678
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1298 settings.ws = 1; // zoomed is always fit |
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1299 redisplay(data); |
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1300 return false; |
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1301 }; |
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1302 |
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1303 var birdZoomStartDrag = function(evt) { |
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1304 // mousedown handler: start dragging bird zoom to a new position |
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1305 startPos = geom.position(evt); |
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1306 birdImgRect = geom.rectangle($birdImg); |
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1307 birdZoomRect = geom.rectangle($birdZoom); |
680 | 1308 $(document).bind("mousemove.digilib", birdZoomMove); |
1309 $(document).bind("mouseup.digilib", birdZoomEndDrag); | |
1310 $birdZoom.bind("mousemove.digilib", birdZoomMove); | |
1311 $birdZoom.bind("mouseup.digilib", birdZoomEndDrag); | |
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1312 return false; |
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1313 }; |
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1314 |
681 | 1315 $birdImg.bind("mousedown.digilib", birdZoomStartDrag); |
1316 $birdZoom.bind("mousedown.digilib", birdZoomStartDrag); | |
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1317 }; |
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1318 |
705 | 1319 var setupZoomDrag = function(data) { |
1320 // setup handlers for dragging the zoomed image | |
1321 var pt1, pt2; | |
1322 var dx = 0; | |
1323 var dy = 0; | |
1324 var $elem = data.$elem; | |
1325 var $scaler = data.$scaler; | |
1326 var $img = data.$img; | |
710 | 1327 |
705 | 1328 var dragStart = function (evt) { |
1329 // drag the image and load a new detail on mouse up | |
1330 // useless if not zoomed | |
1331 if (isFullArea(data.zoomArea)) return false; | |
1332 pt1 = geom.position(evt); | |
1333 $imgRect = geom.rectangle($img); | |
715 | 1334 // keep scaler div size while $img is hidden (for embedded mode) |
1335 $imgRect.adjustDiv($scaler); | |
705 | 1336 // hide the scaler image, show it as background of div instead |
715 | 1337 $scaler.css({ |
705 | 1338 'background-image' : 'url(' + $img.attr('src') + ')', |
1339 'background-repeat' : 'no-repeat', | |
706 | 1340 'background-position' : 'top left', |
705 | 1341 'cursor' : 'move' |
1342 }); | |
1343 $img.hide(); | |
1344 $(document).bind("mousemove.digilib", dragMove); | |
1345 $(document).bind("mouseup.digilib", dragEnd); | |
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1346 return false; |
705 | 1347 }; |
710 | 1348 |
705 | 1349 var dragMove = function (evt) { |
715 | 1350 // mousemove handler: drag zoomed image |
705 | 1351 var pos = geom.position(evt); |
1352 dx = pos.x - pt1.x; | |
1353 dy = pos.y - pt1.y; | |
1354 // move the background image to the new position | |
715 | 1355 $scaler.css({ |
705 | 1356 'background-position' : dx + "px " + dy + "px" |
1357 }); | |
1358 return false; | |
1359 }; | |
710 | 1360 |
705 | 1361 var dragEnd = function (evt) { |
715 | 1362 // mouseup handler: reload zoomed image in new position |
1363 $scaler.css({ | |
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1364 'background-image' : 'none', |
705 | 1365 'cursor' : 'default' |
1366 }); | |
1367 $(document).unbind("mousemove.digilib", dragMove); | |
1368 $(document).unbind("mouseup.digilib", dragEnd); | |
1369 // calculate relative offset | |
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1370 if (dx === 0 && dy === 0) return false; // no movement |
705 | 1371 // reload with scaler image showing the new ausschnitt |
708
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1372 // digilib.moveBy(x, y); |
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1373 var pos = geom.position(-dx, -dy); |
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1374 var newPos = data.imgTrafo.invtransform(pos); |
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1375 var newArea = data.zoomArea.setPt1(newPos); |
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1376 data.zoomArea = MAX_ZOOMAREA.fit(newArea); |
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1377 redisplay(data); |
705 | 1378 return false; |
1379 }; | |
1380 | |
1381 $scaler.bind("mousedown.digilib", dragStart); | |
1382 }; | |
1383 | |
703 | 1384 // get image quality as a number (0..2) |
1385 var getQuality = function (data) { | |
1386 var flags = data.scalerFlags; | |
1387 var q = flags.q2 || flags.q1 || 'q0'; // assume q0 as default | |
1388 return parseInt(q[1], 10); | |
706 | 1389 }; |
703 | 1390 |
1391 // set image quality as a number (0..2) | |
1392 var setQuality = function (data, qual) { | |
1393 var flags = data.scalerFlags; | |
1394 // clear flags | |
1395 for (var i = 0; i < 3; ++i) { | |
1396 delete flags['q'+i]; | |
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1397 } |
703 | 1398 flags['q'+qual] = 'q'+qual; |
706 | 1399 }; |
710 | 1400 |
650 | 1401 // sets a key to a value (relative values with +/- if relative=true) |
1402 var setNumValue = function(settings, key, value) { | |
716 | 1403 if (value == null) return null; |
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1404 if (isNumber(value)) { |
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1405 settings[key] = value; |
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1406 return value; |
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1407 } |
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1408 var sign = value[0]; |
650 | 1409 if (sign === '+' || sign === '-') { |
1410 if (settings[key] == null) { | |
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1411 // this isn't perfect but still... |
650 | 1412 settings[key] = 0; |
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1413 } |
650 | 1414 settings[key] = parseFloat(settings[key]) + parseFloat(value); |
1415 } else { | |
1416 settings[key] = value; | |
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1417 } |
650 | 1418 return settings[key]; |
1419 }; | |
655 | 1420 |
1421 // auxiliary function (from old dllib.js) | |
659 | 1422 isFullArea = function(area) { |
1423 return (area.width === 1.0) && (area.height === 1.0); | |
655 | 1424 }; |
1425 | |
641 | 1426 // auxiliary function (from Douglas Crockford, A.10) |
1427 var isNumber = function isNumber(value) { | |
710 | 1428 return typeof value === 'number' && isFinite(value); |
641 | 1429 }; |
655 | 1430 |
631 | 1431 // auxiliary function to crop senseless precision |
1432 var cropFloat = function (x) { | |
637 | 1433 return parseInt(10000 * x, 10) / 10000; |
631 | 1434 }; |
655 | 1435 |
692 | 1436 // fallback for console.log calls |
1437 if (customConsole) { | |
1438 var logFunction = function(type) { | |
1439 return function(){ | |
1440 var $debug = $('#debug'); // debug div | |
1441 if (!$debug) return; | |
1442 var args = Array.prototype.slice.call(arguments); | |
1443 var argtext = args.join(' '); | |
1444 var $logDiv = $('<div/>'); | |
1445 $logDiv.addClass(type); | |
1446 $logDiv.text(argtext); | |
1447 $debug.append($logDiv); | |
1448 }; | |
1449 }; | |
1450 console.log = logFunction('_log'); | |
1451 console.debug = logFunction('_debug'); | |
1452 console.error = logFunction('_error'); | |
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1453 } |
692 | 1454 |
605 | 1455 // hook plugin into jquery |
651
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1456 $.fn.digilib = function(action) { |
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1457 if (actions[action]) { |
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1458 // call action on this with the remaining arguments (inserting data as first argument) |
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1459 var $elem = $(this); |
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1460 var data = $elem.data('digilib'); |
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1461 var args = Array.prototype.slice.call(arguments, 1); |
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1462 args.unshift(data); |
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1463 return actions[action].apply(this, args); |
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1464 } else if (typeof(action) === 'object' || !action) { |
634 | 1465 // call init on this |
651
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1466 return actions.init.apply(this, arguments); |
605 | 1467 } else { |
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1468 $.error('action ' + action + ' does not exist on jQuery.digilib'); |
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1469 } |
605 | 1470 }; |
692 | 1471 |
604 | 1472 })(jQuery); |