Mercurial > hg > digilib-old
annotate client/digitallibrary/jquery/jquery.digilib.js @ 722:73cac710bea4 jquery
still the strange bug when dragging the zoomed image in embedded mode
author | hertzhaft |
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date | Mon, 31 Jan 2011 16:22:39 +0100 |
parents | dccff3759699 |
children | c6878e9575fe |
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', |
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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); |
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312 } |
668 | 313 // about window creation - TODO: could be deferred? restrict to only one item? |
314 setupAboutDiv(data); | |
710 | 315 // TODO: the actual moving code |
707 | 316 setupZoomDrag(data); |
668 | 317 }); |
318 }, | |
319 | |
320 // destroy: clean up digilib | |
321 destroy : function(data) { | |
322 return this.each(function(){ | |
323 var $elem = $(this); | |
324 $(window).unbind('.digilib'); // unbind all digilibs(?) | |
325 data.digilib.remove(); | |
326 $elem.removeData('digilib'); | |
327 }); | |
328 }, | |
329 | |
330 // show or hide the 'about' window | |
331 showAboutDiv : function(data, show) { | |
332 data.settings.isAboutDivVisible = showDiv(data.settings.isAboutDivVisible, data.$aboutDiv, show); | |
333 }, | |
655 | 334 |
668 | 335 // event handler: toggles the visibility of the bird's eye window |
336 showBirdDiv : function (data, show) { | |
337 if (data.$birdDiv == null) { | |
338 // no bird div -> create | |
339 setupBirdDiv(data); | |
340 } | |
341 data.settings.isBirdDivVisible = showDiv(data.settings.isBirdDivVisible, data.$birdDiv, show); | |
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342 data.$birdImg.triggerHandler('load'); |
668 | 343 }, |
344 | |
345 // goto given page nr (+/-: relative) | |
346 gotoPage : function (data, pageNr) { | |
347 var settings = data.settings; | |
348 var oldpn = settings.pn; | |
716 | 349 if (pageNr == null) { |
350 pageNr = window.prompt("Goto page number", oldpn); | |
351 } | |
668 | 352 var pn = setNumValue(settings, "pn", pageNr); |
353 if (pn == null) return false; // nothing happened | |
354 if (pn < 1) { | |
355 alert("no such page (page number too low)"); | |
356 settings.pn = oldpn; | |
357 return false; | |
358 } | |
359 if (settings.pt) { | |
360 if (pn > settings.pt) { | |
361 alert("no such page (page number too high)"); | |
623 | 362 settings.pn = oldpn; |
363 return false; | |
634 | 364 } |
668 | 365 } |
366 // reset mk and others(?) | |
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367 // TODO: adjust bird div |
668 | 368 data.marks = []; |
369 data.zoomArea = MAX_ZOOMAREA; | |
370 // then reload | |
371 redisplay(data); | |
372 }, | |
654 | 373 |
668 | 374 // zoom by a given factor |
375 zoomBy : function (data, factor) { | |
376 zoomBy(data, factor); | |
377 }, | |
647 | 378 |
668 | 379 // zoom interactively |
380 zoomArea : function (data) { | |
381 zoomArea(data); | |
382 }, | |
650 | 383 |
668 | 384 // zoom out to full page |
385 zoomFull : function (data, mode) { | |
386 data.zoomArea = MAX_ZOOMAREA; | |
387 if (mode === 'width') { | |
388 data.dlOpts.fitwidth = 1; | |
389 delete data.dlOpts.fitheight; | |
390 } else if (mode === 'height') { | |
391 data.dlOpts.fitheight = 1; | |
392 delete data.dlOpts.fitwidth; | |
393 } else { | |
394 delete data.dlOpts.fitwidth; | |
395 delete data.dlOpts.fitheight; | |
396 } | |
397 redisplay(data); | |
398 }, | |
399 | |
400 // set a mark by clicking (or giving a position) | |
401 setMark : function (data, mpos) { | |
402 if (mpos == null) { | |
403 // interactive | |
404 setMark(data); | |
405 } else { | |
406 // use position | |
407 data.marks.push(pos); | |
663 | 408 redisplay(data); |
604 | 409 } |
668 | 410 }, |
411 | |
412 // remove the last mark | |
413 removeMark : function (data) { | |
414 data.marks.pop(); | |
415 redisplay(data); | |
416 }, | |
417 | |
418 // mirror the image | |
419 mirror : function (data, mode) { | |
420 var flags = data.scalerFlags; | |
421 if (mode === 'h') { | |
422 if (flags.hmir) { | |
423 delete flags.hmir; | |
424 } else { | |
425 flags.hmir = 1; | |
426 } | |
427 } else { | |
428 if (flags.vmir) { | |
429 delete flags.vmir; | |
430 } else { | |
431 flags.vmir = 1; | |
432 } | |
433 } | |
434 redisplay(data); | |
435 }, | |
650 | 436 |
668 | 437 // rotate the image |
438 rotate : function (data, angle) { | |
439 var rot = data.settings.rot; | |
440 if (angle == null) { | |
441 angle = window.prompt("Rotation angle:", rot); | |
442 } | |
443 data.settings.rot = angle; | |
444 redisplay(data); | |
445 }, | |
446 | |
447 // change brightness | |
448 brightness : function (data, factor) { | |
449 var brgt = data.settings.brgt; | |
450 if (factor == null) { | |
451 factor = window.prompt("Brightness (-255..255)", brgt); | |
452 } | |
453 data.settings.brgt = factor; | |
454 redisplay(data); | |
455 }, | |
456 | |
457 // change contrast | |
458 contrast : function (data, factor) { | |
459 var cont = data.settings.cont; | |
460 if (factor == null) { | |
461 factor = window.prompt("Contrast (-8, 8)", cont); | |
462 } | |
463 data.settings.cont = factor; | |
464 redisplay(data); | |
688 | 465 }, |
710 | 466 |
690 | 467 // display more (or less) button sets |
468 morebuttons : function (data, more) { | |
696 | 469 var settings = data.settings; |
699 | 470 if (more == null) { |
703 | 471 // toggle more or less (only works for 2 sets) |
699 | 472 var maxbtns = settings.buttonSettings[settings.interactionMode].buttonSets.length; |
473 if (settings.visibleButtonSets >= maxbtns) { | |
474 more = '-1'; | |
475 } else { | |
476 more = '+1'; | |
477 } | |
478 } | |
690 | 479 if (more === '-1') { |
480 // remove set | |
697 | 481 var setIdx = settings.visibleButtonSets - 1; |
482 if (showButtons(data, false, setIdx, true)) { | |
483 settings.visibleButtonSets--; | |
484 } | |
690 | 485 } else { |
486 // add set | |
697 | 487 var setIdx = settings.visibleButtonSets; |
488 if (showButtons(data, true, setIdx, true)) { | |
489 settings.visibleButtonSets++; | |
690 | 490 } |
491 } | |
691 | 492 }, |
688 | 493 |
703 | 494 // reset image parameters to defaults |
688 | 495 reset : function (data) { |
496 var settings = data.settings; | |
497 var paramNames = settings.digilibParamNames; | |
498 var params = data.queryParams; | |
709 | 499 // resets zoomArea, marks, scalerflags |
688 | 500 resetData(data); |
501 // delete all digilib parameters | |
502 for (var i = 0; i < paramNames.length; i++) { | |
503 var paramName = paramNames[i]; | |
504 delete settings[paramName]; | |
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505 } |
688 | 506 // fullscreen: restore only fn/pn parameters |
507 if (settings.interactionMode === 'fullscreen') { | |
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508 settings.fn = params.fn || ''; // no default defined |
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509 settings.pn = params.pn || defaults.pn; |
688 | 510 // embedded: restore original parameters |
511 } else { | |
512 $.extend(settings, params); | |
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513 } |
709 | 514 // TODO: should we really reset all user preferences here? |
515 settings.isBirdDivVisible = false; | |
516 settings.visibleButtonSets = 1; | |
712 | 517 delete data.dlOpts.fitwidth; |
518 delete data.dlOpts.fitheight; | |
688 | 519 redisplay(data); |
689 | 520 }, |
521 | |
703 | 522 // presents a reference url (returns value if noprompt) |
523 reference : function (data, noprompt) { | |
689 | 524 var settings = data.settings; |
525 var url; | |
526 if (settings.interactionMode === 'fullscreen') { | |
527 url = getDigilibUrl(data); | |
528 } else { | |
529 url = getScalerUrl(data); | |
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530 } |
703 | 531 if (noprompt == null) { |
532 window.prompt("URL reference to the current view", url); | |
533 } | |
534 return url; | |
535 }, | |
710 | 536 |
703 | 537 // set image quality |
538 setquality : function (data, qual) { | |
539 var oldq = getQuality(data); | |
540 if (qual == null) { | |
541 qual = window.prompt("Image quality (0..2)", oldq); | |
542 } | |
543 qual = parseInt(qual, 10); | |
544 if (qual >= 0 && qual <= 2) { | |
545 setQuality(data, qual); | |
546 redisplay(data); | |
547 } | |
668 | 548 } |
605 | 549 }; |
604 | 550 |
608 | 551 // returns parameters from page url |
607 | 552 var parseQueryParams = function() { |
636 | 553 return parseQueryString(window.location.search.slice(1)); |
554 }; | |
655 | 555 |
636 | 556 // returns parameters from embedded img-element |
607 | 557 var parseImgParams = function($elem) { |
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558 var src = $elem.find('img').first().attr('src'); |
710 | 559 if (!src) return null; |
607 | 560 var pos = src.indexOf('?'); |
561 var query = (pos < 0) ? '' : src.substring(pos + 1); | |
562 var scalerUrl = src.substring(0, pos); | |
627 | 563 var params = parseQueryString(query); |
564 params.scalerBaseUrl = scalerUrl; | |
565 return params; | |
636 | 566 }; |
607 | 567 |
608 | 568 // parses query parameter string into parameter object |
607 | 569 var parseQueryString = function(query) { |
701 | 570 var params = {}; |
571 if (query == null) return params; | |
607 | 572 var pairs = query.split("&"); |
636 | 573 //var keys = []; |
607 | 574 for (var i = 0; i < pairs.length; i++) { |
575 var pair = pairs[i].split("="); | |
576 if (pair.length === 2) { | |
627 | 577 params[pair[0]] = pair[1]; |
636 | 578 //keys.push(pair[0]); |
634 | 579 } |
636 | 580 } |
627 | 581 return params; |
636 | 582 }; |
668 | 583 |
643 | 584 // returns a query string from key names from a parameter hash (ignoring if the same value is in defaults) |
585 var getParamString = function (settings, keys, defaults) { | |
615 | 586 var paramString = ''; |
650 | 587 var nx = false; |
615 | 588 for (i = 0; i < keys.length; ++i) { |
589 var key = keys[i]; | |
663 | 590 if ((settings[key] != null) && ((defaults == null) || (settings[key] != defaults[key]))) { |
615 | 591 // first param gets no '&' |
650 | 592 if (nx) { |
593 paramString += '&'; | |
594 } else { | |
595 nx = true; | |
596 } | |
615 | 597 // add parm=val |
598 paramString += key + '=' + settings[key]; | |
643 | 599 } |
615 | 600 } |
601 return paramString; | |
631 | 602 }; |
603 | |
636 | 604 // returns URL and query string for Scaler |
605 var getScalerUrl = function (data) { | |
653 | 606 var settings = data.settings; |
652 | 607 if (settings.scalerBaseUrl == null) { |
608 alert("ERROR: URL of digilib Scaler servlet missing!"); | |
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609 } |
665 | 610 packParams(data); |
636 | 611 var keys = settings.scalerParamNames; |
643 | 612 var queryString = getParamString(settings, keys, defaults); |
636 | 613 var url = settings.scalerBaseUrl + '?' + queryString; |
614 return url; | |
615 }; | |
616 | |
617 // returns URL and query string for current digilib | |
644
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618 var getDigilibUrl = function (data) { |
643 | 619 packParams(data); |
636 | 620 var settings = data.settings; |
644
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621 var queryString = getParamString(settings, settings.digilibParamNames, defaults); |
636 | 622 var url = window.location.toString(); |
623 var pos = url.indexOf('?'); | |
624 var baseUrl = url.substring(0, pos); | |
625 var newurl = baseUrl + '?' + queryString; | |
626 return newurl; | |
627 }; | |
628 | |
655 | 629 // processes some parameters into objects and stuff |
631 | 630 var unpackParams = function (data) { |
631 var settings = data.settings; | |
636 | 632 // zoom area |
631 | 633 var zoomArea = geom.rectangle(settings.wx, settings.wy, settings.ww, settings.wh); |
643 | 634 data.zoomArea = zoomArea; |
636 | 635 // marks |
631 | 636 var marks = []; |
650 | 637 if (settings.mk) { |
638 var mk = settings.mk; | |
639 if (mk.indexOf(";") >= 0) { | |
640 var pa = mk.split(";"); // old format with ";" | |
641 } else { | |
642 var pa = mk.split(","); // new format | |
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643 } |
650 | 644 for (var i = 0; i < pa.length ; i++) { |
645 var pos = pa[i].split("/"); | |
646 if (pos.length > 1) { | |
647 marks.push(geom.position(pos[0], pos[1])); | |
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648 } |
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649 } |
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650 } |
643 | 651 data.marks = marks; |
650 | 652 // mo (Scaler flags) |
653 var flags = {}; | |
654 if (settings.mo) { | |
655 var pa = settings.mo.split(","); | |
656 for (var i = 0; i < pa.length ; i++) { | |
657 flags[pa[i]] = pa[i]; | |
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658 } |
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659 } |
650 | 660 data.scalerFlags = flags; |
709 | 661 retrieveOptionsCookie(data); |
655 | 662 }; |
663 | |
631 | 664 // put objects back into parameters |
665 var packParams = function (data) { | |
666 var settings = data.settings; | |
636 | 667 // zoom area |
643 | 668 if (data.zoomArea) { |
647 | 669 settings.wx = cropFloat(data.zoomArea.x); |
670 settings.wy = cropFloat(data.zoomArea.y); | |
671 settings.ww = cropFloat(data.zoomArea.width); | |
672 settings.wh = cropFloat(data.zoomArea.height); | |
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673 } |
636 | 674 // marks |
643 | 675 if (data.marks) { |
650 | 676 settings.mk = ''; |
643 | 677 for (var i = 0; i < data.marks.length; i++) { |
650 | 678 if (i) { |
679 settings.mk += ','; | |
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680 } |
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681 settings.mk += cropFloat(data.marks[i].x).toString() + |
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682 '/' + cropFloat(data.marks[i].y).toString(); |
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683 } |
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684 } |
650 | 685 // Scaler flags |
686 if (data.scalerFlags) { | |
687 var mo = ''; | |
688 for (var f in data.scalerFlags) { | |
689 if (mo) { | |
690 mo += ','; | |
691 } | |
692 mo += f; | |
693 } | |
694 settings.mo = mo; | |
695 } | |
710 | 696 // user interface options |
709 | 697 storeOptionsCookie(data); |
698 }; | |
688 | 699 |
709 | 700 var storeOptionsCookie = function (data) { |
701 | 701 // save digilib options in cookie |
709 | 702 // TODO: in embedded mode this is not called |
701 | 703 /* store in parameter clop |
704 * if (data.dlOpts) { | |
705 var clop = ''; | |
706 for (var o in data.dlOpts) { | |
707 if (clop) { | |
650 | 708 clop += ','; |
709 } | |
710 clop += o; | |
711 } | |
712 settings.clop = clop; | |
701 | 713 } */ |
709 | 714 var settings = data.settings; |
715 if (data.dlOpts) { | |
716 // save digilib settings in options | |
717 data.dlOpts.birdview = settings.isBirdDivVisible ? 1 : 0; | |
718 data.dlOpts.buttons = settings.visibleButtonSets; | |
719 var clop = ''; | |
720 for (var o in data.dlOpts) { | |
721 if (clop) { | |
722 clop += '&'; | |
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723 } |
709 | 724 clop += o + '=' + data.dlOpts[o]; |
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725 } |
709 | 726 if (jQuery.cookie) { |
727 var ck = "digilib:fn:" + escape(settings.fn) + ":pn:" + settings.pn; | |
728 console.debug("set cookie=", ck, " value=", clop); | |
729 jQuery.cookie(ck, clop); | |
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730 } |
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731 } |
631 | 732 }; |
655 | 733 |
709 | 734 var retrieveOptionsCookie = function (data) { |
735 // clop (digilib options) | |
736 var opts = {}; | |
737 var settings = data.settings; | |
738 if (jQuery.cookie) { | |
739 /* read from parameter clop | |
740 * if (settings.clop) { | |
741 var pa = settings.clop.split(","); | |
742 for (var i = 0; i < pa.length ; i++) { | |
743 opts[pa[i]] = pa[i]; | |
744 } | |
745 } */ | |
746 // read from cookie | |
747 var ck = "digilib:fn:" + escape(settings.fn) + ":pn:" + settings.pn; | |
748 var cp = jQuery.cookie(ck); | |
749 console.debug("get cookie=", ck, " value=", cp); | |
750 // in query string format | |
751 opts = parseQueryString(cp); | |
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752 } |
709 | 753 data.dlOpts = opts; |
754 // birdview option | |
755 if (opts.birdview != null) { | |
756 settings.isBirdDivVisible = opts.birdview === '1'; | |
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757 } |
709 | 758 // visible button sets |
759 if (opts.buttons != null) { | |
760 settings.visibleButtonSets = opts.buttons; | |
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761 } |
711 | 762 }; |
709 | 763 |
688 | 764 // clear digilib data for reset |
765 var resetData = function (data) { | |
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766 // TODO: we should reset instead of delete |
688 | 767 if (data.zoomArea) delete data.zoomArea; |
768 if (data.marks) delete data.marks; | |
769 if (data.scalerFlags) delete data.scalerFlags; | |
770 }; | |
771 | |
622 | 772 // (re)load the img from a new scaler URL |
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773 var redisplay = function (data) { |
636 | 774 var settings = data.settings; |
775 if (settings.interactionMode === 'fullscreen') { | |
776 // update location.href (browser URL) in fullscreen mode | |
644
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777 var url = getDigilibUrl(data); |
636 | 778 var history = window.history; |
779 if (typeof(history.pushState) === 'function') { | |
780 console.debug("we could modify history, but we don't..."); | |
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781 } |
636 | 782 window.location = url; |
783 } else { | |
784 // embedded mode -- just change img src | |
785 var url = getScalerUrl(data); | |
786 data.$img.attr('src', url); | |
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787 // load new bird img (in case the scalerUrl has changed, like in gotopage) |
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788 showBirdImage(data); |
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789 } |
622 | 790 }; |
791 | |
662 | 792 // returns maximum size for scaler img in fullscreen mode |
793 var getFullscreenImgSize = function($elem) { | |
794 var $win = $(window); | |
795 var winH = $win.height(); | |
796 var winW = $win.width(); | |
797 // TODO: account for borders? | |
798 return geom.size(winW, winH); | |
799 }; | |
800 | |
608 | 801 // creates HTML structure for digilib in elem |
627 | 802 var setupScalerDiv = function (data) { |
803 var settings = data.settings; | |
647 | 804 var $elem = data.$elem; |
686 | 805 var $img, scalerUrl; |
806 // fullscreen | |
608 | 807 if (settings.interactionMode === 'fullscreen') { |
609 | 808 var imgSize = getFullscreenImgSize($elem); |
650 | 809 // fitwidth/height omits destination height/width |
715 | 810 // if (data.dlOpts['fitheight'] !== '1') { |
811 if (data.dlOpts['fitheight'] == null) { | |
650 | 812 settings.dw = imgSize.width; |
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813 } |
715 | 814 // if (data.dlOpts['fitwidth'] !== '1') { |
815 if (data.dlOpts['fitwidth'] == null) { | |
650 | 816 settings.dh = imgSize.height; |
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817 } |
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818 $img = $('<img/>'); |
686 | 819 scalerUrl = getScalerUrl(data); |
820 // embedded mode -- try to keep img tag | |
609 | 821 } else { |
623 | 822 $img = $elem.find('img'); |
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823 if ($img.length > 0) { |
686 | 824 console.debug("img detach:", $img); |
825 scalerUrl = $img.attr('src'); | |
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826 $img.detach(); |
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827 } else { |
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828 $img = $('<img/>'); |
686 | 829 scalerUrl = getScalerUrl(data); |
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830 } |
608 | 831 } |
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832 // create new html |
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833 $elem.empty(); // TODO: should we keep stuff for customization? |
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834 var $scaler = $('<div class="scaler"/>'); |
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835 $elem.append($scaler); |
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836 $scaler.append($img); |
622 | 837 $img.addClass('pic'); |
649 | 838 data.$scaler = $scaler; |
636 | 839 data.$img = $img; |
687 | 840 // setup image load handler before setting the src attribute (IE bug) |
841 $img.load(scalerImgLoadedHandler(data)); | |
842 $img.attr('src', scalerUrl); | |
608 | 843 }; |
615 | 844 |
610 | 845 // creates HTML structure for buttons in elem |
697 | 846 var createButtons = function (data, buttonSetIdx) { |
647 | 847 var $elem = data.$elem; |
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848 var settings = data.settings; |
665 | 849 var mode = settings.interactionMode; |
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850 var buttonSettings = settings.buttonSettings[mode]; |
682 | 851 var buttonGroup = buttonSettings.buttonSets[buttonSetIdx]; |
690 | 852 if (buttonGroup == null) { |
853 // no buttons here | |
854 return; | |
855 } | |
856 var $buttonsDiv = $('<div class="buttons"/>'); | |
682 | 857 var buttonNames = buttonSettings[buttonGroup]; |
858 for (var i = 0; i < buttonNames.length; i++) { | |
859 var buttonName = buttonNames[i]; | |
860 var buttonConfig = settings.buttons[buttonName]; | |
665 | 861 // construct the button html |
862 var $button = $('<div class="button"></div>'); | |
863 var $a = $('<a/>'); | |
864 var $img = $('<img class="button"/>'); | |
865 $buttonsDiv.append($button); | |
866 $button.append($a); | |
867 $a.append($img); | |
868 // add attributes and bindings | |
869 $button.attr('title', buttonConfig.tooltip); | |
682 | 870 $button.addClass('button-' + buttonName); |
665 | 871 // create handler for the buttons |
872 $a.bind('click.digilib', (function () { | |
873 // we create a new closure to capture the value of action | |
874 var action = buttonConfig.onclick; | |
875 if ($.isArray(action)) { | |
876 // the handler function calls digilib with action and parameters | |
877 return function (evt) { | |
878 console.debug('click action=', action, ' evt=', evt); | |
879 $elem.digilib.apply($elem, action); | |
880 return false; | |
881 }; | |
882 } else { | |
883 // the handler function calls digilib with action | |
884 return function (evt) { | |
885 console.debug('click action=', action, ' evt=', evt); | |
886 $elem.digilib(action); | |
887 return false; | |
888 }; | |
889 } | |
890 })()); | |
891 $img.attr('src', buttonSettings.imagePath + buttonConfig.img); | |
690 | 892 } |
662 | 893 // make buttons div scroll if too large for window |
894 if ($buttonsDiv.height() > $(window).height() - 10) { | |
895 $buttonsDiv.css('position', 'absolute'); | |
896 } | |
697 | 897 // buttons hidden at first |
898 $buttonsDiv.hide(); | |
899 $elem.append($buttonsDiv); | |
682 | 900 if (data.$buttonSets == null) { |
697 | 901 // first button set |
682 | 902 data.$buttonSets = [$buttonsDiv]; |
903 } else { | |
690 | 904 $elem.append($buttonsDiv); |
682 | 905 data.$buttonSets[buttonSetIdx] = $buttonsDiv; |
906 } | |
612 | 907 return $buttonsDiv; |
610 | 908 }; |
615 | 909 |
910 // creates HTML structure for the bird's eye view in elem | |
638 | 911 var setupBirdDiv = function (data) { |
647 | 912 var $elem = data.$elem; |
615 | 913 // the bird's eye div |
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914 var $birdDiv = $('<div class="birdview" style="display:none"/>'); |
615 | 915 // the detail indicator frame |
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916 var $birdZoom = $('<div class="birdZoom" style="display:none; position:absolute; background-color:transparent;"/>'); |
615 | 917 // the small image |
918 var $birdImg = $('<img class="birdimg"/>'); | |
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919 $elem.append($birdDiv); |
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920 $birdDiv.append($birdZoom); |
658
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921 $birdDiv.append($birdImg); |
678
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922 $birdZoom.css(data.settings.birdIndicatorStyle); |
658
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923 data.$birdDiv = $birdDiv; |
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924 data.$birdZoom = $birdZoom; |
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925 data.$birdImg = $birdImg; |
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926 $birdImg.load(birdImgLoadedHandler(data)); |
722
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927 showBirdImage(data); |
719
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928 birdZoom(data); |
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929 }; |
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930 |
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931 // puts correct img into bird div |
722
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932 var showBirdImage = function (data) { |
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933 var $birdDiv = data.$birdDiv; |
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934 if ($birdDiv == null) return null; |
719
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935 var settings = data.settings; |
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936 var $birdImg = data.$birdImg; |
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937 var birdDivOptions = { |
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938 dw : settings.birdDivWidth, |
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939 dh : settings.birdDivHeight |
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940 }; |
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941 var birdSettings = $.extend({}, settings, birdDivOptions); |
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942 // use only the relevant parameters |
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943 var birdUrl = settings.scalerBaseUrl + '?' |
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944 + getParamString(birdSettings, settings.birdDivParams); |
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945 // the bird's eye div |
615 | 946 $birdImg.attr('src', birdUrl); |
719
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947 if (settings.isBirdDivVisible) { |
687 | 948 $birdDiv.show(); |
713
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949 } |
640
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950 }; |
719
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951 |
615 | 952 |
625 | 953 // creates HTML structure for the about view in elem |
628
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954 var setupAboutDiv = function (data) { |
647 | 955 var $elem = data.$elem; |
628
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956 var settings = data.settings; |
625 | 957 var $aboutDiv = $('<div class="about" style="display:none"/>'); |
616 | 958 var $header = $('<p>Digilib Graphic Viewer</p>'); |
959 var $link = $('<a/>'); | |
960 var $logo = $('<img class="logo" title="digilib"/>'); | |
961 var $content = $('<p/>'); | |
962 $elem.append($aboutDiv); | |
963 $aboutDiv.append($header); | |
964 $aboutDiv.append($link); | |
965 $aboutDiv.append($content); | |
966 $link.append($logo); | |
967 $logo.attr('src', settings.logoUrl); | |
635 | 968 $link.attr('href', settings.homeUrl); |
616 | 969 $content.text('Version: ' + settings.version); |
635 | 970 // click hides |
649 | 971 $aboutDiv.bind('click.digilib', function () { |
646 | 972 settings.isAboutDivVisible = showDiv(settings.isAboutDivVisible, $aboutDiv, 0); |
649 | 973 return false; |
710 | 974 }); |
635 | 975 data.$aboutDiv = $aboutDiv; |
634 | 976 }; |
977 | |
635 | 978 // shows some window e.g. 'about' (toggle visibility if show is null) |
979 var showDiv = function (isVisible, $div, show) { | |
645 | 980 if (show == null) { |
635 | 981 // toggle visibility |
982 isVisible = !isVisible; | |
983 } else { | |
984 // set visibility | |
985 isVisible = show; | |
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986 } |
635 | 987 if (isVisible) { |
988 $div.fadeIn(); | |
989 } else { | |
990 $div.fadeOut(); | |
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991 } |
635 | 992 return isVisible; |
634 | 993 }; |
616 | 994 |
697 | 995 // display more (or less) button sets |
996 var showButtons = function (data, more, setIdx, animated) { | |
711 | 997 var atime = animated ? 'fast': 0; |
697 | 998 if (more) { |
999 // add set | |
1000 var $otherSets = data.$elem.find('div.buttons:visible'); | |
1001 var $set; | |
1002 if (data.$buttonSets && data.$buttonSets[setIdx]) { | |
1003 // set exists | |
1004 $set = data.$buttonSets[setIdx]; | |
1005 } else { | |
1006 $set = createButtons(data, setIdx); | |
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1007 } |
697 | 1008 if ($set == null) return false; |
1009 var btnWidth = $set.width(); | |
1010 // move remaining sets left and show new set | |
711 | 1011 if ($otherSets.length > 0) { |
1012 $otherSets.animate({right : '+='+btnWidth+'px'}, atime, | |
1013 function () {$set.show();}); | |
697 | 1014 } else { |
1015 $set.show(); | |
711 | 1016 } |
697 | 1017 } else { |
1018 // remove set | |
1019 var $set = data.$buttonSets[setIdx]; | |
1020 if ($set == null) return false; | |
1021 var btnWidth = $set.width(); | |
1022 // hide last set | |
1023 $set.hide(); | |
1024 // take remaining sets and move right | |
1025 var $otherSets = data.$elem.find('div.buttons:visible'); | |
711 | 1026 $otherSets.animate({right : '-='+btnWidth+'px'}, atime); |
1027 } | |
697 | 1028 return true; |
1029 }; | |
1030 | |
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1031 // create Transform from area and $img |
675 | 1032 var getImgTrafo = function ($img, area, rot, hmir, vmir) { |
658
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1033 var picrect = geom.rectangle($img); |
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1034 var trafo = geom.transform(); |
675 | 1035 // move zoom area offset to center |
658
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1036 trafo.concat(trafo.getTranslation(geom.position(-area.x, -area.y))); |
675 | 1037 // scale zoom area size to [1,1] |
658
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1038 trafo.concat(trafo.getScale(geom.size(1/area.width, 1/area.height))); |
675 | 1039 // rotate and mirror (around transformed image center i.e. [0.5,0.5]) |
1040 if (rot || hmir || vmir) { | |
1041 // move [0.5,0.5] to center | |
1042 trafo.concat(trafo.getTranslation(geom.position(-0.5, -0.5))); | |
1043 if (hmir) { | |
1044 // mirror about center | |
1045 trafo.concat(trafo.getMirror('y')); | |
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1046 } |
675 | 1047 if (vmir) { |
1048 // mirror about center | |
1049 trafo.concat(trafo.getMirror('x')); | |
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1050 } |
675 | 1051 if (rot) { |
1052 // rotate around center | |
1053 trafo.concat(trafo.getRotation(parseFloat(rot))); | |
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1054 } |
675 | 1055 // move back |
1056 trafo.concat(trafo.getTranslation(geom.position(0.5, 0.5))); | |
713
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1057 } |
664
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1058 // scale to screen position and size |
658
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1059 trafo.concat(trafo.getScale(picrect)); |
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1060 trafo.concat(trafo.getTranslation(picrect)); |
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1061 return trafo; |
655 | 1062 }; |
678
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1063 |
613
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1064 // returns function for load event of scaler img |
636 | 1065 var scalerImgLoadedHandler = function (data) { |
717
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1066 var $img = data.$img; |
633 | 1067 return function () { |
627 | 1068 console.debug("img loaded! this=", this, " data=", data); |
1069 // create Transform from current area and picsize | |
675 | 1070 data.imgTrafo = getImgTrafo($img, data.zoomArea, |
1071 data.settings.rot, data.scalerFlags.hmir, data.scalerFlags.vmir); | |
686 | 1072 console.debug("imgTrafo=", data.imgTrafo); |
720 | 1073 // set scaler div size explicitly in case $img is hidden (for zoomDrag) |
1074 var $imgRect = geom.rectangle(data.$img); | |
1075 console.debug("imgrect=", $imgRect); | |
1076 $imgRect.adjustDiv(data.$scaler); | |
715 | 1077 // show image in case it was hidden (for example in zoomDrag) |
1078 $img.show(); | |
627 | 1079 // display marks |
633 | 1080 renderMarks(data); |
695
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|
1081 // TODO: digilib.showArrows(); // show arrow overlays for zoom navigation |
678
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1082 var $birdImg = data.$birdImg; |
705 | 1083 // should the birdview adapt to mirror or rotation? decision: No. :-) |
670
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1084 if ($birdImg) { |
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1085 $birdImg.triggerHandler('load'); |
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1086 } |
658
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1087 }; |
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1088 }; |
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|
1089 |
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1090 // returns function for load event of bird's eye view img |
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1091 var birdImgLoadedHandler = function (data) { |
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1092 var $img = data.$birdImg; |
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|
1093 return function () { |
677
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|
1094 console.debug("birdimg loaded! this=", this, " data=", data); |
658
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1095 // create Transform from current area and picsize |
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1096 data.birdTrafo = getImgTrafo($img, MAX_ZOOMAREA); |
668 | 1097 // display red indicator around zoomarea |
678
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1098 renderbirdZoom(data); |
613
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1099 }; |
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1100 }; |
633 | 1101 |
1102 // place marks on the image | |
1103 var renderMarks = function (data) { | |
647 | 1104 var $elem = data.$elem; |
643 | 1105 var marks = data.marks; |
649 | 1106 // TODO: clear marks first(?) |
633 | 1107 for (var i = 0; i < marks.length; i++) { |
1108 var mark = marks[i]; | |
643 | 1109 if (data.zoomArea.containsPosition(mark)) { |
633 | 1110 var mpos = data.imgTrafo.transform(mark); |
664
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1111 console.debug("renderMarks: mpos=",mpos); |
633 | 1112 // create mark |
1113 var html = '<div class="mark">'+(i+1)+'</div>'; | |
1114 var $mark = $(html); | |
1115 $elem.append($mark); | |
654 | 1116 $mark.offset({left : mpos.x, top : mpos.y}); |
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1117 } |
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1118 } |
633 | 1119 }; |
655 | 1120 |
677
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1121 // show zoom area indicator on bird's eye view |
678
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1122 var renderbirdZoom = function (data) { |
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1123 var $birdZoom = data.$birdZoom; |
659 | 1124 var zoomArea = data.zoomArea; |
1125 var indRect = data.birdTrafo.transform(zoomArea); | |
670
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1126 var coords = { |
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1127 left : indRect.x-2, // acount for frame width |
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1128 top : indRect.y-2, |
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1129 width : indRect.width, |
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1130 height: indRect.height |
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1131 }; |
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1132 var normalSize = isFullArea(zoomArea); |
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1133 if (data.settings.interactionMode === 'fullscreen') { |
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1134 // no animation for fullscreen |
678
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1135 if (normalSize) return $birdZoom.hide(); |
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1136 $birdZoom.width(coords.width); |
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1137 $birdZoom.height(coords.height); |
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1138 $birdZoom.offset(coords); |
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1139 $birdZoom.show(); |
670
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1140 return; |
713
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1141 } |
670
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1142 // nice animation for embedded mode :-) |
678
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1143 var makeCompleteFunction = function($birdZoom, normalSize) { |
670
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1144 return function() { |
678
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1145 if (normalSize) $birdZoom.hide(); |
672
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1146 }; |
670
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1147 }; |
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1148 var opts = { |
678
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1149 'complete' : makeCompleteFunction($birdZoom, normalSize) |
670
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1150 }; |
678
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1151 if (!normalSize && $birdZoom.css('display') === 'none') $birdZoom.show(); |
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1152 $birdZoom.animate(coords, opts); |
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1153 }; |
659 | 1154 |
647 | 1155 // zooms by the given factor |
643 | 1156 var zoomBy = function(data, factor) { |
1157 var area = data.zoomArea; | |
1158 var newarea = area.copy(); | |
1159 // scale | |
1160 newarea.width /= factor; | |
1161 newarea.height /= factor; | |
1162 // and recenter | |
1163 newarea.x -= 0.5 * (newarea.width - area.width); | |
1164 newarea.y -= 0.5 * (newarea.height - area.height); | |
1165 newarea = MAX_ZOOMAREA.fit(newarea); | |
1166 data.zoomArea = newarea; | |
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1167 redisplay(data); |
643 | 1168 }; |
1169 | |
647 | 1170 // add a mark where clicked |
1171 var setMark = function (data) { | |
649 | 1172 var $scaler = data.$scaler; |
647 | 1173 // start event capturing |
649 | 1174 $scaler.one('click.digilib', function (evt) { |
647 | 1175 // event handler adding a new mark |
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1176 var mpos = geom.position(evt); |
647 | 1177 var pos = data.imgTrafo.invtransform(mpos); |
1178 data.marks.push(pos); | |
1179 redisplay(data); | |
649 | 1180 return false; // do we even get here? |
647 | 1181 }); |
1182 }; | |
668 | 1183 |
654 | 1184 var zoomArea = function(data) { |
1185 $elem = data.$elem; | |
1186 $scaler = data.$scaler; | |
1187 var pt1, pt2; | |
1188 var $zoomDiv = $('<div class="zoomrect" style="display:none"/>'); | |
1189 $elem.append($zoomDiv); | |
668 | 1190 $zoomDiv.css(data.settings.zoomrectStyle); |
654 | 1191 var picRect = geom.rectangle($scaler); |
1192 // FIX ME: is there a way to query the border width from CSS info? | |
1193 // rect.x -= 2; // account for overlay borders | |
1194 // rect.y -= 2; | |
1195 | |
1196 var zoomStart = function (evt) { | |
1197 pt1 = geom.position(evt); | |
1198 // setup and show zoom div | |
1199 //moveElement(zoomdiv, Rectangle(pt1.x, pt1.y, 0, 0)); | |
1200 $zoomDiv.offset({left : pt1.x, top : pt1.y}); | |
668 | 1201 $zoomDiv.width(0).height(0); |
654 | 1202 $zoomDiv.show(); |
1203 // register events | |
1204 $elem.bind("mousemove.digilib", zoomMove); | |
1205 $elem.bind("mouseup.digilib", zoomEnd); | |
1206 return false; | |
1207 }; | |
668 | 1208 |
654 | 1209 // mouseup handler: end moving |
1210 var zoomEnd = function (evt) { | |
1211 pt2 = geom.position(evt); | |
1212 // assume a click and continue if the area is too small | |
1213 var clickRect = geom.rectangle(pt1, pt2); | |
710 | 1214 if (clickRect.getArea() <= 5) return false; |
654 | 1215 // hide zoom div |
1216 $zoomDiv.remove(); | |
1217 // unregister events | |
1218 $elem.unbind("mousemove.digilib", zoomMove); | |
1219 $elem.unbind("mouseup.digilib", zoomEnd); | |
1220 // clip and transform | |
1221 clickRect.clipTo(picRect); | |
1222 var area = data.imgTrafo.invtransform(clickRect); | |
1223 data.zoomArea = area; | |
1224 // zoomed is always fit | |
1225 data.settings.ws = 1; | |
1226 redisplay(data); | |
1227 return false; | |
1228 }; | |
668 | 1229 |
654 | 1230 // mouse move handler |
1231 var zoomMove = function (evt) { | |
1232 pt2 = geom.position(evt); | |
1233 var rect = geom.rectangle(pt1, pt2); | |
1234 rect.clipTo(picRect); | |
1235 // update zoom div | |
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1236 rect.adjustDiv($zoomDiv); |
654 | 1237 return false; |
1238 }; | |
668 | 1239 |
654 | 1240 // bind start zoom handler |
1241 $scaler.one('mousedown.digilib', zoomStart); | |
1242 }; | |
647 | 1243 |
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1244 var birdZoom = function(data) { |
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1245 var $birdImg = data.$birdImg; |
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1246 var $birdZoom = data.$birdZoom; |
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1247 var startPos, newRect, birdImgRect, birdZoomRect; |
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1248 |
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1249 var birdZoomMove = function(evt) { |
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1250 // mousemove handler: drag |
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1251 var pos = geom.position(evt); |
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1252 var dx = pos.x - startPos.x; |
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1253 var dy = pos.y - startPos.y; |
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1254 // move birdZoom div, keeping size |
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1255 newRect = geom.rectangle( |
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1256 birdZoomRect.x + dx, |
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1257 birdZoomRect.y + dy, |
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1258 birdZoomRect.width, |
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1259 birdZoomRect.height); |
678
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1260 // stay within birdimage |
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1261 newRect.stayInside(birdImgRect); |
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1262 $birdZoom.offset({left : newRect.x, top : newRect.y}); |
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1263 // $birdZoom.show(); |
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1264 return false; |
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1265 }; |
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1266 |
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1267 var birdZoomEndDrag = function(evt) { |
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1268 // mouseup handler: reload page |
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1269 var settings = data.settings; |
680 | 1270 $(document).unbind("mousemove.digilib", birdZoomMove); |
1271 $(document).unbind("mouseup.digilib", birdZoomEndDrag); | |
1272 $birdZoom.unbind("mousemove.digilib", birdZoomMove); | |
1273 $birdZoom.unbind("mouseup.digilib", birdZoomEndDrag); | |
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1274 if (newRect == null) { // no movement happened |
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1275 startPos = birdZoomRect.getCenter(); |
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1276 birdZoomMove(evt); // set center to click position |
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1277 } |
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1278 if (data.zoomArea) { |
679 | 1279 // should always be true |
1280 var x = cropFloat((newRect.x - birdImgRect.x + 2) / birdImgRect.width); | |
1281 var y = cropFloat((newRect.y - birdImgRect.y + 2) / birdImgRect.height); | |
1282 data.zoomArea.x = x; | |
1283 data.zoomArea.y = y; | |
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1284 } |
678
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1285 settings.ws = 1; // zoomed is always fit |
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1286 redisplay(data); |
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1287 return false; |
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1288 }; |
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1289 |
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1290 var birdZoomStartDrag = function(evt) { |
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1291 // mousedown handler: start dragging bird zoom to a new position |
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1292 startPos = geom.position(evt); |
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1293 birdImgRect = geom.rectangle($birdImg); |
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1294 birdZoomRect = geom.rectangle($birdZoom); |
680 | 1295 $(document).bind("mousemove.digilib", birdZoomMove); |
1296 $(document).bind("mouseup.digilib", birdZoomEndDrag); | |
1297 $birdZoom.bind("mousemove.digilib", birdZoomMove); | |
1298 $birdZoom.bind("mouseup.digilib", birdZoomEndDrag); | |
678
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1299 return false; |
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1300 }; |
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1301 |
681 | 1302 $birdImg.bind("mousedown.digilib", birdZoomStartDrag); |
1303 $birdZoom.bind("mousedown.digilib", birdZoomStartDrag); | |
678
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1304 }; |
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1305 |
705 | 1306 var setupZoomDrag = function(data) { |
1307 // setup handlers for dragging the zoomed image | |
1308 var pt1, pt2; | |
1309 var dx = 0; | |
1310 var dy = 0; | |
1311 var $elem = data.$elem; | |
1312 var $scaler = data.$scaler; | |
1313 var $img = data.$img; | |
710 | 1314 |
705 | 1315 var dragStart = function (evt) { |
1316 // drag the image and load a new detail on mouse up | |
1317 // useless if not zoomed | |
1318 if (isFullArea(data.zoomArea)) return false; | |
1319 pt1 = geom.position(evt); | |
1320 $imgRect = geom.rectangle($img); | |
715 | 1321 // keep scaler div size while $img is hidden (for embedded mode) |
1322 $imgRect.adjustDiv($scaler); | |
705 | 1323 // hide the scaler image, show it as background of div instead |
715 | 1324 $scaler.css({ |
705 | 1325 'background-image' : 'url(' + $img.attr('src') + ')', |
1326 'background-repeat' : 'no-repeat', | |
706 | 1327 'background-position' : 'top left', |
705 | 1328 'cursor' : 'move' |
1329 }); | |
1330 $img.hide(); | |
1331 $(document).bind("mousemove.digilib", dragMove); | |
1332 $(document).bind("mouseup.digilib", dragEnd); | |
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1333 return false; |
705 | 1334 }; |
710 | 1335 |
705 | 1336 var dragMove = function (evt) { |
715 | 1337 // mousemove handler: drag zoomed image |
705 | 1338 var pos = geom.position(evt); |
1339 dx = pos.x - pt1.x; | |
1340 dy = pos.y - pt1.y; | |
1341 // move the background image to the new position | |
715 | 1342 $scaler.css({ |
705 | 1343 'background-position' : dx + "px " + dy + "px" |
1344 }); | |
1345 return false; | |
1346 }; | |
710 | 1347 |
705 | 1348 var dragEnd = function (evt) { |
715 | 1349 // mouseup handler: reload zoomed image in new position |
1350 $scaler.css({ | |
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1351 'background-image' : 'none', |
705 | 1352 'cursor' : 'default' |
1353 }); | |
1354 $(document).unbind("mousemove.digilib", dragMove); | |
1355 $(document).unbind("mouseup.digilib", dragEnd); | |
1356 // calculate relative offset | |
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1357 if (dx === 0 && dy === 0) return false; // no movement |
705 | 1358 // reload with scaler image showing the new ausschnitt |
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1359 // digilib.moveBy(x, y); |
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1360 var pos = geom.position(-dx, -dy); |
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1361 var newPos = data.imgTrafo.invtransform(pos); |
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1362 var newArea = data.zoomArea.setPt1(newPos); |
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1363 data.zoomArea = MAX_ZOOMAREA.fit(newArea); |
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1364 redisplay(data); |
705 | 1365 return false; |
1366 }; | |
1367 | |
1368 $scaler.bind("mousedown.digilib", dragStart); | |
1369 }; | |
1370 | |
703 | 1371 // get image quality as a number (0..2) |
1372 var getQuality = function (data) { | |
1373 var flags = data.scalerFlags; | |
1374 var q = flags.q2 || flags.q1 || 'q0'; // assume q0 as default | |
1375 return parseInt(q[1], 10); | |
706 | 1376 }; |
703 | 1377 |
1378 // set image quality as a number (0..2) | |
1379 var setQuality = function (data, qual) { | |
1380 var flags = data.scalerFlags; | |
1381 // clear flags | |
1382 for (var i = 0; i < 3; ++i) { | |
1383 delete flags['q'+i]; | |
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1384 } |
703 | 1385 flags['q'+qual] = 'q'+qual; |
706 | 1386 }; |
710 | 1387 |
650 | 1388 // sets a key to a value (relative values with +/- if relative=true) |
1389 var setNumValue = function(settings, key, value) { | |
716 | 1390 if (value == null) return null; |
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1391 if (isNumber(value)) { |
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1392 settings[key] = value; |
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1393 return value; |
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1394 } |
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1395 var sign = value[0]; |
650 | 1396 if (sign === '+' || sign === '-') { |
1397 if (settings[key] == null) { | |
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1398 // this isn't perfect but still... |
650 | 1399 settings[key] = 0; |
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1400 } |
650 | 1401 settings[key] = parseFloat(settings[key]) + parseFloat(value); |
1402 } else { | |
1403 settings[key] = value; | |
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1404 } |
650 | 1405 return settings[key]; |
1406 }; | |
655 | 1407 |
1408 // auxiliary function (from old dllib.js) | |
659 | 1409 isFullArea = function(area) { |
1410 return (area.width === 1.0) && (area.height === 1.0); | |
655 | 1411 }; |
1412 | |
641 | 1413 // auxiliary function (from Douglas Crockford, A.10) |
1414 var isNumber = function isNumber(value) { | |
710 | 1415 return typeof value === 'number' && isFinite(value); |
641 | 1416 }; |
655 | 1417 |
631 | 1418 // auxiliary function to crop senseless precision |
1419 var cropFloat = function (x) { | |
637 | 1420 return parseInt(10000 * x, 10) / 10000; |
631 | 1421 }; |
655 | 1422 |
692 | 1423 // fallback for console.log calls |
1424 if (customConsole) { | |
1425 var logFunction = function(type) { | |
1426 return function(){ | |
1427 var $debug = $('#debug'); // debug div | |
1428 if (!$debug) return; | |
1429 var args = Array.prototype.slice.call(arguments); | |
1430 var argtext = args.join(' '); | |
1431 var $logDiv = $('<div/>'); | |
1432 $logDiv.addClass(type); | |
1433 $logDiv.text(argtext); | |
1434 $debug.append($logDiv); | |
1435 }; | |
1436 }; | |
1437 console.log = logFunction('_log'); | |
1438 console.debug = logFunction('_debug'); | |
1439 console.error = logFunction('_error'); | |
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1440 } |
692 | 1441 |
605 | 1442 // hook plugin into jquery |
651
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1443 $.fn.digilib = function(action) { |
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1444 if (actions[action]) { |
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1445 // call action on this with the remaining arguments (inserting data as first argument) |
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1446 var $elem = $(this); |
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1447 var data = $elem.data('digilib'); |
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1448 var args = Array.prototype.slice.call(arguments, 1); |
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1449 args.unshift(data); |
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1450 return actions[action].apply(this, args); |
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1451 } else if (typeof(action) === 'object' || !action) { |
634 | 1452 // call init on this |
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1453 return actions.init.apply(this, arguments); |
605 | 1454 } else { |
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robcast
parents:
711
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changeset
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1455 $.error('action ' + action + ' does not exist on jQuery.digilib'); |
c1fa722c570e
more cosmetics: added options to validate with http://www.jslint.com
robcast
parents:
711
diff
changeset
|
1456 } |
605 | 1457 }; |
692 | 1458 |
604 | 1459 })(jQuery); |