Mercurial > hg > digilib-old
annotate client/digitallibrary/jquery/jquery.digilib.js @ 678:d50d24b7fd95 jquery
first step at dragging birdview zoom indicator around
author | hertzhaft |
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date | Wed, 26 Jan 2011 01:01:53 +0100 |
parents | 0233e39305d3 |
children | f774b56d3c1a |
rev | line source |
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604 | 1 /* |
2 * digilib jQuery plugin | |
3 * | |
4 */ | |
655 | 5 |
636 | 6 // fallback for console.log calls |
7 if (typeof(console) === 'undefined') { | |
8 var console = { | |
9 log : function(){}, | |
10 debug : function(){}, | |
11 error : function(){} | |
12 }; | |
13 } | |
604 | 14 |
15 (function($) { | |
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16 var buttons = { |
610 | 17 reference : { |
18 onclick : "javascript:getRefWin()", | |
19 tooltip : "get a reference URL", | |
20 img : "reference.png" | |
21 }, | |
22 zoomin : { | |
643 | 23 onclick : ["zoomBy", 1.4], |
610 | 24 tooltip : "zoom in", |
25 img : "zoom-in.png" | |
26 }, | |
27 zoomout : { | |
643 | 28 onclick : ["zoomBy", 0.7], |
610 | 29 tooltip : "zoom out", |
30 img : "zoom-out.png" | |
31 }, | |
32 zoomarea : { | |
654 | 33 onclick : "zoomArea", |
610 | 34 tooltip : "zoom area", |
35 img : "zoom-area.png" | |
36 }, | |
37 zoomfull : { | |
650 | 38 onclick : "zoomFull", |
610 | 39 tooltip : "view the whole image", |
40 img : "zoom-full.png" | |
41 }, | |
42 pagewidth : { | |
650 | 43 onclick : ["zoomFull", "width"], |
610 | 44 tooltip : "page width", |
45 img : "pagewidth.png" | |
46 }, | |
47 back : { | |
623 | 48 onclick : ["gotoPage", "-1"], |
610 | 49 tooltip : "goto previous image", |
50 img : "back.png" | |
51 }, | |
52 fwd : { | |
623 | 53 onclick : ["gotoPage", "+1"], |
610 | 54 tooltip : "goto next image", |
55 img : "fwd.png" | |
56 }, | |
57 page : { | |
58 onclick : "javascript:gotoPageWin()", | |
59 tooltip : "specify image", | |
60 img : "page.png" | |
61 }, | |
62 bird : { | |
635 | 63 onclick : "showBirdDiv", |
610 | 64 tooltip : "show bird's eye view", |
65 img : "birds-eye.png" | |
66 }, | |
67 help : { | |
635 | 68 onclick : "showAboutDiv", |
610 | 69 tooltip : "about Digilib", |
70 img : "help.png" | |
71 }, | |
72 reset : { | |
73 onclick : "javascript:resetImage()", | |
74 tooltip : "reset image", | |
75 img : "reset.png" | |
76 }, | |
77 mark : { | |
647 | 78 onclick : "setMark", |
610 | 79 tooltip : "set a mark", |
80 img : "mark.png" | |
81 }, | |
82 delmark : { | |
650 | 83 onclick : "removeMark", |
610 | 84 tooltip : "delete the last mark", |
85 img : "delmark.png" | |
86 }, | |
87 hmir : { | |
661 | 88 onclick : ["mirror", "h"], |
610 | 89 tooltip : "mirror horizontally", |
90 img : "mirror-horizontal.png" | |
91 }, | |
92 vmir : { | |
661 | 93 onclick : ["mirror", "v"], |
610 | 94 tooltip : "mirror vertically", |
95 img : "mirror-vertical.png" | |
96 }, | |
97 rot : { | |
663 | 98 onclick : "rotate", |
610 | 99 tooltip : "rotate image", |
100 img : "rotate.png" | |
101 }, | |
102 brgt : { | |
663 | 103 onclick : "brightness", |
610 | 104 tooltip : "set brightness", |
105 img : "brightness.png" | |
106 }, | |
107 cont : { | |
663 | 108 onclick : "contrast", |
610 | 109 tooltip : "set contrast", |
110 img : "contrast.png" | |
111 }, | |
112 rgb : { | |
113 onclick : "javascript:setParamWin('rgb', '...')", | |
114 tooltip : "set rgb values", | |
115 img : "rgb.png" | |
116 }, | |
117 quality : { | |
118 onclick : "javascript:setQualityWin('Quality (0..2)')", | |
119 tooltip : "set image quality", | |
120 img : "quality.png" | |
121 }, | |
122 size : { | |
123 onclick : "javascript:toggleSizeMenu()", | |
124 tooltip : "set page size", | |
125 img : "size.png" | |
126 }, | |
127 calibrationx : { | |
128 onclick : "javascript:calibrate('x')", | |
129 tooltip : "calibrate screen x-ratio", | |
130 img : "calibration-x.png" | |
131 }, | |
132 scale : { | |
133 onclick : "javascript:toggleScaleMenu()", | |
134 tooltip : "change image scale", | |
135 img : "original-size.png" | |
136 }, | |
137 options : { | |
138 onclick : "javascript:toggleOptionDiv()", | |
139 tooltip : "hide options", | |
140 img : "options.png" | |
141 }, | |
142 SEP : { | |
143 img : "sep.png" | |
144 } | |
145 }; | |
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146 |
605 | 147 var defaults = { |
616 | 148 // version of this script |
635 | 149 'version' : 'jquery.digilib.js 0.9', |
616 | 150 // logo url |
151 'logoUrl' : '../img/digilib-logo-text1.png', | |
635 | 152 // homepage url (behind logo) |
153 'homeUrl' : 'http://digilib.berlios.de', | |
610 | 154 // base URL to Scaler servlet |
652 | 155 'scalerBaseUrl' : null, |
610 | 156 // list of Scaler parameters |
627 | 157 'scalerParamNames' : ['fn','pn','dw','dh','ww','wh','wx','wy','ws','mo', |
158 'rot','cont','brgt','rgbm','rgba','ddpi','ddpix','ddpiy'], | |
159 // Scaler parameter defaults | |
643 | 160 'pn' : 1, |
627 | 161 'ww' : 1.0, |
162 'wh' : 1.0, | |
163 'wx' : 0.0, | |
164 'wy' : 0.0, | |
165 'ws' : 1.0, | |
643 | 166 'mo' : '', |
167 'rot' : 0, | |
168 'cont' : 0, | |
169 'brgt' : 0, | |
170 'rgbm' : '0/0/0', | |
171 'rgba' : '0/0/0', | |
172 'ddpi' : null, | |
173 'ddpix' : null, | |
174 'ddpiy' : null, | |
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175 // list of digilib parameters |
650 | 176 'digilibParamNames' : ['fn','pn','ww','wh','wx','wy','ws','mo','rot','cont','brgt','rgbm','rgba','mk','clop'], |
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177 // digilib parameter defaults |
643 | 178 'mk' : '', |
650 | 179 'clop' : '', |
643 | 180 // mode of operation: |
181 // fullscreen = take parameters from page URL, keep state in page URL | |
182 // embedded = take parameters from Javascript options, keep state inside object | |
610 | 183 'interactionMode' : 'fullscreen', |
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184 // buttons |
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185 'buttons' : buttons, |
668 | 186 // defaults for digilib buttons |
665 | 187 'buttonSettings' : { |
188 'fullscreen' : { | |
668 | 189 // path to button images (must end with a slash) |
665 | 190 'imagePath' : 'img/fullscreen/', |
191 //'standardSet' : ["reference","zoomin","zoomout","zoomarea","zoomfull","pagewidth","back","fwd","page","bird","SEP","help","reset","options"], | |
192 'standardSet' : ["reference","zoomin","zoomout","zoomarea","zoomfull","pagewidth","mark","delmark","hmir","vmir","back","fwd","page","rot","brgt","cont","rgb","quality","size","calibrationx","scale","bird","help","options"], | |
193 'specialSet' : ["mark","delmark","hmir","vmir","rot","brgt","cont","rgb","quality","size","calibrationx","scale","SEP","options"], | |
194 'customSet' : [] | |
195 }, | |
196 'embedded' : { | |
197 'imagePath' : 'img/embedded/16/', | |
198 'standardSet' : ["reference","zoomin","zoomout","zoomarea","zoomfull","hmir","vmir","back","fwd","page","rot","brgt","cont","rgb","quality","size","scale","bird","help","options"], | |
199 'specialSet' : ["mark","delmark","hmir","vmir","rot","brgt","cont","rgb","quality","size","calibrationx","scale","SEP","options"], | |
200 'customSet' : [] | |
201 } | |
202 }, | |
652 | 203 // button groups |
616 | 204 // is birdView shown? |
205 'isBirdDivVisible' : false, | |
668 | 206 // dimensions of bird's eye div |
674 | 207 'birdDivWidth' : 200, |
208 'birdDivHeight' : 200, | |
668 | 209 // style of the zoom area indicator in the bird's eye div |
659 | 210 'birdIndicatorStyle' : {'border' : '2px solid #ff0000' }, |
668 | 211 // style of zoom area "rubber band" |
212 'zoomrectStyle' : {'border' : '2px solid #ff0000' }, | |
616 | 213 // is the "about" window shown? |
214 'isAboutDivVisible' : false | |
215 | |
610 | 216 }; |
655 | 217 |
608 | 218 // affine geometry classes |
219 var geom = dlGeometry(); | |
655 | 220 |
643 | 221 var MAX_ZOOMAREA = geom.rectangle(0, 0, 1, 1); |
655 | 222 |
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223 var actions = { |
668 | 224 // init: digilib initialization |
225 init : function(options) { | |
226 // settings for this digilib instance are merged from defaults and options | |
227 var settings = $.extend({}, defaults, options); | |
228 var isFullscreen = settings.interactionMode === 'fullscreen'; | |
229 var queryParams = {}; | |
230 if (isFullscreen) { | |
231 queryParams = parseQueryParams(); | |
232 // check scalerBaseUrl | |
233 if (settings.scalerBaseUrl == null) { | |
234 // try the host this came from | |
235 var h = window.location.host; | |
236 if (window.location.host) { | |
237 var url = window.location.href; | |
238 // assume the page lives in [webapp]/jquery/ | |
239 var pos = url.indexOf('jquery/'); | |
240 if (pos > 0) { | |
241 settings.scalerBaseUrl = url.substring(0, pos) + 'servlet/Scaler'; | |
652 | 242 } |
243 } | |
636 | 244 } |
668 | 245 } |
246 return this.each(function() { | |
247 var $elem = $(this); | |
248 var data = $elem.data('digilib'); | |
249 var elemSettings; | |
250 // if the plugin hasn't been initialized yet | |
251 if (!data) { | |
252 // merge query parameters | |
253 if (isFullscreen) { | |
254 elemSettings = $.extend({}, settings, queryParams); | |
255 } else { | |
256 elemSettings = $.extend({}, settings, parseImgParams($elem)); | |
604 | 257 } |
668 | 258 // store $(this) element in the settings |
259 data = { | |
260 $elem : $elem, | |
261 settings : elemSettings, | |
262 queryParams : queryParams | |
263 }; | |
264 // store in data element | |
265 $elem.data('digilib', data); | |
266 } | |
267 unpackParams(data); | |
268 // create HTML structure | |
269 setupScalerDiv(data); | |
270 setupButtons(data, 'standardSet'); | |
271 // bird's eye view creation | |
272 if (elemSettings.isBirdDivVisible) { | |
638 | 273 setupBirdDiv(data); |
274 } | |
668 | 275 // about window creation - TODO: could be deferred? restrict to only one item? |
276 setupAboutDiv(data); | |
277 }); | |
278 }, | |
279 | |
280 // destroy: clean up digilib | |
281 destroy : function(data) { | |
282 return this.each(function(){ | |
283 var $elem = $(this); | |
284 $(window).unbind('.digilib'); // unbind all digilibs(?) | |
285 data.digilib.remove(); | |
286 $elem.removeData('digilib'); | |
287 }); | |
288 }, | |
289 | |
290 // show or hide the 'about' window | |
291 showAboutDiv : function(data, show) { | |
292 data.settings.isAboutDivVisible = showDiv(data.settings.isAboutDivVisible, data.$aboutDiv, show); | |
293 }, | |
655 | 294 |
668 | 295 // event handler: toggles the visibility of the bird's eye window |
296 showBirdDiv : function (data, show) { | |
297 if (data.$birdDiv == null) { | |
298 // no bird div -> create | |
299 setupBirdDiv(data); | |
300 } | |
301 // TODO: keep bird view visible after reload (parameter, cookie?) | |
302 data.settings.isBirdDivVisible = showDiv(data.settings.isBirdDivVisible, data.$birdDiv, show); | |
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303 data.$birdImg.triggerHandler('load'); |
668 | 304 }, |
305 | |
306 // goto given page nr (+/-: relative) | |
307 gotoPage : function (data, pageNr) { | |
308 var settings = data.settings; | |
309 var oldpn = settings.pn; | |
310 var pn = setNumValue(settings, "pn", pageNr); | |
311 if (pn == null) return false; // nothing happened | |
312 if (pn < 1) { | |
313 alert("no such page (page number too low)"); | |
314 settings.pn = oldpn; | |
315 return false; | |
316 } | |
317 if (settings.pt) { | |
318 if (pn > settings.pt) { | |
319 alert("no such page (page number too high)"); | |
623 | 320 settings.pn = oldpn; |
321 return false; | |
634 | 322 } |
668 | 323 } |
324 // reset mk and others(?) | |
325 data.marks = []; | |
326 data.zoomArea = MAX_ZOOMAREA; | |
327 // then reload | |
328 redisplay(data); | |
329 }, | |
654 | 330 |
668 | 331 // zoom by a given factor |
332 zoomBy : function (data, factor) { | |
333 zoomBy(data, factor); | |
334 }, | |
647 | 335 |
668 | 336 // zoom interactively |
337 zoomArea : function (data) { | |
338 zoomArea(data); | |
339 }, | |
650 | 340 |
668 | 341 // zoom out to full page |
342 zoomFull : function (data, mode) { | |
343 data.zoomArea = MAX_ZOOMAREA; | |
344 if (mode === 'width') { | |
345 data.dlOpts.fitwidth = 1; | |
346 delete data.dlOpts.fitheight; | |
347 } else if (mode === 'height') { | |
348 data.dlOpts.fitheight = 1; | |
349 delete data.dlOpts.fitwidth; | |
350 } else { | |
351 delete data.dlOpts.fitwidth; | |
352 delete data.dlOpts.fitheight; | |
353 } | |
354 redisplay(data); | |
355 }, | |
356 | |
357 // set a mark by clicking (or giving a position) | |
358 setMark : function (data, mpos) { | |
359 if (mpos == null) { | |
360 // interactive | |
361 setMark(data); | |
362 } else { | |
363 // use position | |
364 data.marks.push(pos); | |
663 | 365 redisplay(data); |
604 | 366 } |
668 | 367 }, |
368 | |
369 // remove the last mark | |
370 removeMark : function (data) { | |
371 data.marks.pop(); | |
372 redisplay(data); | |
373 }, | |
374 | |
375 // mirror the image | |
376 mirror : function (data, mode) { | |
377 var flags = data.scalerFlags; | |
378 if (mode === 'h') { | |
379 if (flags.hmir) { | |
380 delete flags.hmir; | |
381 } else { | |
382 flags.hmir = 1; | |
383 } | |
384 } else { | |
385 if (flags.vmir) { | |
386 delete flags.vmir; | |
387 } else { | |
388 flags.vmir = 1; | |
389 } | |
390 } | |
391 redisplay(data); | |
392 }, | |
650 | 393 |
668 | 394 // rotate the image |
395 rotate : function (data, angle) { | |
396 var rot = data.settings.rot; | |
397 if (angle == null) { | |
398 angle = window.prompt("Rotation angle:", rot); | |
399 } | |
400 data.settings.rot = angle; | |
401 redisplay(data); | |
402 }, | |
403 | |
404 // change brightness | |
405 brightness : function (data, factor) { | |
406 var brgt = data.settings.brgt; | |
407 if (factor == null) { | |
408 factor = window.prompt("Brightness (-255..255)", brgt); | |
409 } | |
410 data.settings.brgt = factor; | |
411 redisplay(data); | |
412 }, | |
413 | |
414 // change contrast | |
415 contrast : function (data, factor) { | |
416 var cont = data.settings.cont; | |
417 if (factor == null) { | |
418 factor = window.prompt("Contrast (-8, 8)", cont); | |
419 } | |
420 data.settings.cont = factor; | |
421 redisplay(data); | |
422 } | |
605 | 423 }; |
604 | 424 |
608 | 425 // returns parameters from page url |
607 | 426 var parseQueryParams = function() { |
636 | 427 return parseQueryString(window.location.search.slice(1)); |
428 }; | |
655 | 429 |
636 | 430 // returns parameters from embedded img-element |
607 | 431 var parseImgParams = function($elem) { |
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432 var src = $elem.find('img').first().attr('src'); |
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433 if (!src) { |
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434 return null; |
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435 } |
607 | 436 var pos = src.indexOf('?'); |
437 var query = (pos < 0) ? '' : src.substring(pos + 1); | |
438 var scalerUrl = src.substring(0, pos); | |
627 | 439 var params = parseQueryString(query); |
440 params.scalerBaseUrl = scalerUrl; | |
441 return params; | |
636 | 442 }; |
607 | 443 |
608 | 444 // parses query parameter string into parameter object |
607 | 445 var parseQueryString = function(query) { |
446 var pairs = query.split("&"); | |
627 | 447 var params = {}; |
636 | 448 //var keys = []; |
607 | 449 for (var i = 0; i < pairs.length; i++) { |
450 var pair = pairs[i].split("="); | |
451 if (pair.length === 2) { | |
627 | 452 params[pair[0]] = pair[1]; |
636 | 453 //keys.push(pair[0]); |
634 | 454 } |
636 | 455 } |
627 | 456 return params; |
636 | 457 }; |
668 | 458 |
643 | 459 // returns a query string from key names from a parameter hash (ignoring if the same value is in defaults) |
460 var getParamString = function (settings, keys, defaults) { | |
615 | 461 var paramString = ''; |
650 | 462 var nx = false; |
615 | 463 for (i = 0; i < keys.length; ++i) { |
464 var key = keys[i]; | |
663 | 465 if ((settings[key] != null) && ((defaults == null) || (settings[key] != defaults[key]))) { |
615 | 466 // first param gets no '&' |
650 | 467 if (nx) { |
468 paramString += '&'; | |
469 } else { | |
470 nx = true; | |
471 } | |
615 | 472 // add parm=val |
473 paramString += key + '=' + settings[key]; | |
643 | 474 } |
615 | 475 } |
476 return paramString; | |
631 | 477 }; |
478 | |
636 | 479 // returns URL and query string for Scaler |
480 var getScalerUrl = function (data) { | |
653 | 481 var settings = data.settings; |
652 | 482 if (settings.scalerBaseUrl == null) { |
483 alert("ERROR: URL of digilib Scaler servlet missing!"); | |
484 } | |
665 | 485 packParams(data); |
636 | 486 var keys = settings.scalerParamNames; |
643 | 487 var queryString = getParamString(settings, keys, defaults); |
636 | 488 var url = settings.scalerBaseUrl + '?' + queryString; |
489 return url; | |
490 }; | |
491 | |
492 // returns URL and query string for current digilib | |
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493 var getDigilibUrl = function (data) { |
643 | 494 packParams(data); |
636 | 495 var settings = data.settings; |
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496 var queryString = getParamString(settings, settings.digilibParamNames, defaults); |
636 | 497 var url = window.location.toString(); |
498 var pos = url.indexOf('?'); | |
499 var baseUrl = url.substring(0, pos); | |
500 var newurl = baseUrl + '?' + queryString; | |
501 return newurl; | |
502 }; | |
503 | |
655 | 504 // processes some parameters into objects and stuff |
631 | 505 var unpackParams = function (data) { |
506 var settings = data.settings; | |
636 | 507 // zoom area |
631 | 508 var zoomArea = geom.rectangle(settings.wx, settings.wy, settings.ww, settings.wh); |
643 | 509 data.zoomArea = zoomArea; |
636 | 510 // marks |
631 | 511 var marks = []; |
650 | 512 if (settings.mk) { |
513 var mk = settings.mk; | |
514 if (mk.indexOf(";") >= 0) { | |
515 var pa = mk.split(";"); // old format with ";" | |
516 } else { | |
517 var pa = mk.split(","); // new format | |
518 } | |
519 for (var i = 0; i < pa.length ; i++) { | |
520 var pos = pa[i].split("/"); | |
521 if (pos.length > 1) { | |
522 marks.push(geom.position(pos[0], pos[1])); | |
523 } | |
633 | 524 } |
631 | 525 } |
643 | 526 data.marks = marks; |
650 | 527 // mo (Scaler flags) |
528 var flags = {}; | |
529 if (settings.mo) { | |
530 var pa = settings.mo.split(","); | |
531 for (var i = 0; i < pa.length ; i++) { | |
532 flags[pa[i]] = pa[i]; | |
533 } | |
534 } | |
535 data.scalerFlags = flags; | |
536 // clop (digilib options) | |
537 var opts = {}; | |
538 if (settings.clop) { | |
539 var pa = settings.clop.split(","); | |
540 for (var i = 0; i < pa.length ; i++) { | |
541 opts[pa[i]] = pa[i]; | |
542 } | |
543 } | |
544 data.dlOpts = opts; | |
661 | 545 // birdview option |
546 if (opts.birdview) { | |
547 settings.isBirdDivVisible = 1; | |
548 } | |
655 | 549 }; |
550 | |
631 | 551 // put objects back into parameters |
552 var packParams = function (data) { | |
553 var settings = data.settings; | |
636 | 554 // zoom area |
643 | 555 if (data.zoomArea) { |
647 | 556 settings.wx = cropFloat(data.zoomArea.x); |
557 settings.wy = cropFloat(data.zoomArea.y); | |
558 settings.ww = cropFloat(data.zoomArea.width); | |
559 settings.wh = cropFloat(data.zoomArea.height); | |
631 | 560 } |
636 | 561 // marks |
643 | 562 if (data.marks) { |
650 | 563 settings.mk = ''; |
643 | 564 for (var i = 0; i < data.marks.length; i++) { |
650 | 565 if (i) { |
566 settings.mk += ','; | |
567 } | |
568 settings.mk += cropFloat(data.marks[i].x).toString() + '/' + cropFloat(data.marks[i].y).toString(); | |
631 | 569 } |
650 | 570 } |
571 // Scaler flags | |
572 if (data.scalerFlags) { | |
573 var mo = ''; | |
574 for (var f in data.scalerFlags) { | |
575 if (mo) { | |
576 mo += ','; | |
577 } | |
578 mo += f; | |
579 } | |
580 settings.mo = mo; | |
581 } | |
661 | 582 // digilib option birdview |
583 if (settings.isBirdDivVisible) { | |
584 data.dlOpts.birdview = 1; | |
662 | 585 } else { |
586 delete data.dlOpts.birdview; | |
661 | 587 } |
650 | 588 // digilib options |
589 if (data.dlOpts) { | |
590 var clop = ''; | |
591 for (var o in data.dlOpts) { | |
592 if (clop) { | |
593 clop += ','; | |
594 } | |
595 clop += o; | |
596 } | |
597 settings.clop = clop; | |
631 | 598 } |
599 }; | |
655 | 600 |
622 | 601 // (re)load the img from a new scaler URL |
644
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602 var redisplay = function (data) { |
636 | 603 var settings = data.settings; |
604 if (settings.interactionMode === 'fullscreen') { | |
605 // update location.href (browser URL) in fullscreen mode | |
644
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606 var url = getDigilibUrl(data); |
636 | 607 var history = window.history; |
608 if (typeof(history.pushState) === 'function') { | |
609 console.debug("we could modify history, but we don't..."); | |
610 } | |
611 window.location = url; | |
612 } else { | |
613 // embedded mode -- just change img src | |
614 var url = getScalerUrl(data); | |
615 data.$img.attr('src', url); | |
677
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616 // and update bird's eye view |
678
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617 //if (settings.isBirdDivVisible) { |
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618 // renderBirdZoom(data); |
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619 //} |
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620 }; |
622 | 621 }; |
622 | |
662 | 623 // returns maximum size for scaler img in fullscreen mode |
624 var getFullscreenImgSize = function($elem) { | |
625 var $win = $(window); | |
626 var winH = $win.height(); | |
627 var winW = $win.width(); | |
628 // TODO: account for borders? | |
629 return geom.size(winW, winH); | |
630 }; | |
631 | |
608 | 632 // creates HTML structure for digilib in elem |
627 | 633 var setupScalerDiv = function (data) { |
634 var settings = data.settings; | |
647 | 635 var $elem = data.$elem; |
623 | 636 var $img; |
608 | 637 if (settings.interactionMode === 'fullscreen') { |
609 | 638 // fullscreen |
639 var imgSize = getFullscreenImgSize($elem); | |
650 | 640 // fitwidth/height omits destination height/width |
641 if (data.dlOpts['fitheight'] == null) { | |
642 settings.dw = imgSize.width; | |
643 } | |
644 if (data.dlOpts['fitwidth'] == null) { | |
645 settings.dh = imgSize.height; | |
646 } | |
613
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647 $img = $('<img/>'); |
636 | 648 var scalerUrl = getScalerUrl(data); |
649 $img.attr('src', scalerUrl); | |
609 | 650 } else { |
613
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651 // embedded mode -- try to keep img tag |
623 | 652 $img = $elem.find('img'); |
613
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653 if ($img.length > 0) { |
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654 console.debug("img detach:",$img); |
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655 $img.detach(); |
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656 } else { |
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657 $img = $('<img/>'); |
636 | 658 var scalerUrl = getScalerUrl(data); |
659 $img.attr('src', scalerUrl); | |
613
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660 } |
608 | 661 } |
613
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662 // create new html |
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663 $elem.empty(); // TODO: should we keep stuff for customization? |
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664 var $scaler = $('<div class="scaler"/>'); |
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665 $elem.append($scaler); |
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666 $scaler.append($img); |
622 | 667 $img.addClass('pic'); |
649 | 668 data.$scaler = $scaler; |
636 | 669 data.$img = $img; |
670 $img.load(scalerImgLoadedHandler(data)); | |
608 | 671 }; |
615 | 672 |
610 | 673 // creates HTML structure for buttons in elem |
628
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674 var setupButtons = function (data, actionGroup) { |
647 | 675 var $elem = data.$elem; |
628
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676 var settings = data.settings; |
665 | 677 // if (settings.interactionMode === 'fullscreen') { |
678 var $buttonsDiv = $('<div class="buttons"></div>'); | |
679 $elem.append($buttonsDiv); | |
680 var mode = settings.interactionMode; | |
672
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681 var buttonSettings = settings.buttonSettings[mode]; |
665 | 682 var actionNames = buttonSettings[actionGroup]; |
683 for (var i = 0; i < actionNames.length; i++) { | |
684 var actionName = actionNames[i]; | |
685 var buttonConfig = settings.buttons[actionName]; | |
686 // construct the button html | |
687 var $button = $('<div class="button"></div>'); | |
688 var $a = $('<a/>'); | |
689 var $img = $('<img class="button"/>'); | |
690 $buttonsDiv.append($button); | |
691 $button.append($a); | |
692 $a.append($img); | |
693 // add attributes and bindings | |
694 $button.attr('title', buttonConfig.tooltip); | |
695 $button.addClass('button-' + actionName); | |
696 // create handler for the buttons | |
697 $a.bind('click.digilib', (function () { | |
698 // we create a new closure to capture the value of action | |
699 var action = buttonConfig.onclick; | |
700 if ($.isArray(action)) { | |
701 // the handler function calls digilib with action and parameters | |
702 return function (evt) { | |
703 console.debug('click action=', action, ' evt=', evt); | |
704 $elem.digilib.apply($elem, action); | |
705 return false; | |
706 }; | |
707 } else { | |
708 // the handler function calls digilib with action | |
709 return function (evt) { | |
710 console.debug('click action=', action, ' evt=', evt); | |
711 $elem.digilib(action); | |
712 return false; | |
713 }; | |
714 } | |
715 })()); | |
716 $img.attr('src', buttonSettings.imagePath + buttonConfig.img); | |
637 | 717 } |
662 | 718 // make buttons div scroll if too large for window |
719 if ($buttonsDiv.height() > $(window).height() - 10) { | |
720 $buttonsDiv.css('position', 'absolute'); | |
721 } | |
612 | 722 return $buttonsDiv; |
610 | 723 }; |
615 | 724 |
725 // creates HTML structure for the bird's eye view in elem | |
638 | 726 var setupBirdDiv = function (data) { |
647 | 727 var $elem = data.$elem; |
628
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728 var settings = data.settings; |
615 | 729 // use only the relevant parameters |
730 var keys = ['fn','pn','dw','dh']; | |
674 | 731 var birdDivOptions = { |
732 dw : settings.birdDivWidth, | |
733 dh : settings.birdDivHeight | |
734 }; | |
735 var birdSettings = $.extend({}, settings, birdDivOptions); | |
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736 var birdUrl = settings.scalerBaseUrl + '?' + getParamString(birdSettings, keys); |
615 | 737 // the bird's eye div |
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738 var $birdDiv = $('<div class="birdview" style="display:none"/>'); |
615 | 739 // the detail indicator frame |
678
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740 var $birdZoom = $('<div class="birdZoom" style="display:none; position:absolute; background-color:transparent;"/>'); |
615 | 741 // the small image |
742 var $birdImg = $('<img class="birdimg"/>'); | |
658
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743 $elem.append($birdDiv); |
678
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744 $birdDiv.append($birdZoom); |
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745 $birdDiv.append($birdImg); |
678
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746 $birdZoom.css(data.settings.birdIndicatorStyle); |
658
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747 data.$birdDiv = $birdDiv; |
678
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748 data.$birdZoom = $birdZoom; |
658
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749 data.$birdImg = $birdImg; |
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750 $birdImg.load(birdImgLoadedHandler(data)); |
615 | 751 $birdImg.attr('src', birdUrl); |
640
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752 if (data.settings.isBirdDivVisible) { |
658
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753 $birdDiv.fadeIn(); |
678
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754 }; |
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755 birdZoom(data); |
640
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756 }; |
615 | 757 |
625 | 758 // creates HTML structure for the about view in elem |
628
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759 var setupAboutDiv = function (data) { |
647 | 760 var $elem = data.$elem; |
628
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761 var settings = data.settings; |
625 | 762 var $aboutDiv = $('<div class="about" style="display:none"/>'); |
616 | 763 var $header = $('<p>Digilib Graphic Viewer</p>'); |
764 var $link = $('<a/>'); | |
765 var $logo = $('<img class="logo" title="digilib"/>'); | |
766 var $content = $('<p/>'); | |
767 $elem.append($aboutDiv); | |
768 $aboutDiv.append($header); | |
769 $aboutDiv.append($link); | |
770 $aboutDiv.append($content); | |
771 $link.append($logo); | |
772 $logo.attr('src', settings.logoUrl); | |
635 | 773 $link.attr('href', settings.homeUrl); |
616 | 774 $content.text('Version: ' + settings.version); |
635 | 775 // click hides |
649 | 776 $aboutDiv.bind('click.digilib', function () { |
646 | 777 settings.isAboutDivVisible = showDiv(settings.isAboutDivVisible, $aboutDiv, 0); |
649 | 778 return false; |
779 }); | |
635 | 780 data.$aboutDiv = $aboutDiv; |
634 | 781 }; |
782 | |
635 | 783 // shows some window e.g. 'about' (toggle visibility if show is null) |
784 var showDiv = function (isVisible, $div, show) { | |
645 | 785 if (show == null) { |
635 | 786 // toggle visibility |
787 isVisible = !isVisible; | |
788 } else { | |
789 // set visibility | |
790 isVisible = show; | |
791 } | |
792 if (isVisible) { | |
793 $div.fadeIn(); | |
794 } else { | |
795 $div.fadeOut(); | |
796 } | |
797 return isVisible; | |
634 | 798 }; |
616 | 799 |
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800 // create Transform from area and $img |
675 | 801 var getImgTrafo = function ($img, area, rot, hmir, vmir) { |
658
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802 var picrect = geom.rectangle($img); |
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803 var trafo = geom.transform(); |
675 | 804 // move zoom area offset to center |
658
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805 trafo.concat(trafo.getTranslation(geom.position(-area.x, -area.y))); |
675 | 806 // scale zoom area size to [1,1] |
658
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807 trafo.concat(trafo.getScale(geom.size(1/area.width, 1/area.height))); |
675 | 808 // rotate and mirror (around transformed image center i.e. [0.5,0.5]) |
809 if (rot || hmir || vmir) { | |
810 // move [0.5,0.5] to center | |
811 trafo.concat(trafo.getTranslation(geom.position(-0.5, -0.5))); | |
812 if (hmir) { | |
813 // mirror about center | |
814 trafo.concat(trafo.getMirror('y')); | |
815 } | |
816 if (vmir) { | |
817 // mirror about center | |
818 trafo.concat(trafo.getMirror('x')); | |
819 } | |
820 if (rot) { | |
821 // rotate around center | |
822 trafo.concat(trafo.getRotation(parseFloat(rot))); | |
823 } | |
824 // move back | |
825 trafo.concat(trafo.getTranslation(geom.position(0.5, 0.5))); | |
664
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826 } |
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827 // scale to screen position and size |
658
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828 trafo.concat(trafo.getScale(picrect)); |
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829 trafo.concat(trafo.getTranslation(picrect)); |
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830 return trafo; |
655 | 831 }; |
678
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832 |
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833 // returns function for load event of scaler img |
636 | 834 var scalerImgLoadedHandler = function (data) { |
835 var $img = data.$img; | |
633 | 836 return function () { |
627 | 837 console.debug("img loaded! this=", this, " data=", data); |
838 // create Transform from current area and picsize | |
675 | 839 data.imgTrafo = getImgTrafo($img, data.zoomArea, |
840 data.settings.rot, data.scalerFlags.hmir, data.scalerFlags.vmir); | |
627 | 841 // display marks |
633 | 842 renderMarks(data); |
627 | 843 //digilib.showArrows(); // show arrow overlays for zoom navigation |
678
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844 var $birdImg = data.$birdImg; |
670
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845 if ($birdImg) { |
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846 $birdImg.triggerHandler('load'); |
678
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847 }; |
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848 }; |
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849 }; |
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850 |
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851 // returns function for load event of bird's eye view img |
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852 var birdImgLoadedHandler = function (data) { |
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853 var $img = data.$birdImg; |
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854 return function () { |
677
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855 console.debug("birdimg loaded! this=", this, " data=", data); |
658
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856 // create Transform from current area and picsize |
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857 data.birdTrafo = getImgTrafo($img, MAX_ZOOMAREA); |
668 | 858 // display red indicator around zoomarea |
678
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859 renderbirdZoom(data); |
613
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860 }; |
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861 }; |
633 | 862 |
863 // place marks on the image | |
864 var renderMarks = function (data) { | |
647 | 865 var $elem = data.$elem; |
643 | 866 var marks = data.marks; |
649 | 867 // TODO: clear marks first(?) |
633 | 868 for (var i = 0; i < marks.length; i++) { |
869 var mark = marks[i]; | |
643 | 870 if (data.zoomArea.containsPosition(mark)) { |
633 | 871 var mpos = data.imgTrafo.transform(mark); |
664
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872 console.debug("renderMarks: mpos=",mpos); |
633 | 873 // create mark |
874 var html = '<div class="mark">'+(i+1)+'</div>'; | |
875 var $mark = $(html); | |
876 $elem.append($mark); | |
654 | 877 $mark.offset({left : mpos.x, top : mpos.y}); |
633 | 878 } |
879 } | |
880 }; | |
655 | 881 |
677
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882 // show zoom area indicator on bird's eye view |
678
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883 var renderbirdZoom = function (data) { |
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884 var $birdZoom = data.$birdZoom; |
659 | 885 var zoomArea = data.zoomArea; |
886 var indRect = data.birdTrafo.transform(zoomArea); | |
670
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887 var coords = { |
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888 left : indRect.x-2, // acount for frame width |
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889 top : indRect.y-2, |
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890 width : indRect.width, |
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891 height: indRect.height |
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892 }; |
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893 var normalSize = isFullArea(zoomArea); |
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894 if (data.settings.interactionMode === 'fullscreen') { |
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895 // no animation for fullscreen |
678
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896 if (normalSize) return $birdZoom.hide(); |
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897 $birdZoom.width(coords.width); |
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898 $birdZoom.height(coords.height); |
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899 $birdZoom.offset(coords); |
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900 $birdZoom.show(); |
670
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901 return; |
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902 }; |
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903 // nice animation for embedded mode :-) |
678
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904 var makeCompleteFunction = function($birdZoom, normalSize) { |
670
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905 return function() { |
678
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906 if (normalSize) $birdZoom.hide(); |
672
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907 }; |
670
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908 }; |
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909 var opts = { |
678
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910 'complete' : makeCompleteFunction($birdZoom, normalSize) |
670
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911 }; |
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912 if (!normalSize && $birdZoom.css('display') === 'none') $birdZoom.show(); |
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913 $birdZoom.animate(coords, opts); |
664
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914 }; |
659 | 915 |
647 | 916 // zooms by the given factor |
643 | 917 var zoomBy = function(data, factor) { |
918 var area = data.zoomArea; | |
919 var newarea = area.copy(); | |
920 // scale | |
921 newarea.width /= factor; | |
922 newarea.height /= factor; | |
923 // and recenter | |
924 newarea.x -= 0.5 * (newarea.width - area.width); | |
925 newarea.y -= 0.5 * (newarea.height - area.height); | |
926 newarea = MAX_ZOOMAREA.fit(newarea); | |
927 data.zoomArea = newarea; | |
644
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928 redisplay(data); |
643 | 929 }; |
930 | |
647 | 931 // add a mark where clicked |
932 var setMark = function (data) { | |
649 | 933 var $scaler = data.$scaler; |
647 | 934 // start event capturing |
649 | 935 $scaler.one('click.digilib', function (evt) { |
647 | 936 // event handler adding a new mark |
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937 var mpos = geom.position(evt); |
647 | 938 var pos = data.imgTrafo.invtransform(mpos); |
939 data.marks.push(pos); | |
940 redisplay(data); | |
649 | 941 return false; // do we even get here? |
647 | 942 }); |
943 }; | |
668 | 944 |
654 | 945 var zoomArea = function(data) { |
946 $elem = data.$elem; | |
947 $scaler = data.$scaler; | |
948 var pt1, pt2; | |
949 var $zoomDiv = $('<div class="zoomrect" style="display:none"/>'); | |
950 $elem.append($zoomDiv); | |
668 | 951 $zoomDiv.css(data.settings.zoomrectStyle); |
654 | 952 var picRect = geom.rectangle($scaler); |
953 // FIX ME: is there a way to query the border width from CSS info? | |
954 // rect.x -= 2; // account for overlay borders | |
955 // rect.y -= 2; | |
956 | |
957 var zoomStart = function (evt) { | |
958 pt1 = geom.position(evt); | |
959 // setup and show zoom div | |
960 //moveElement(zoomdiv, Rectangle(pt1.x, pt1.y, 0, 0)); | |
961 $zoomDiv.offset({left : pt1.x, top : pt1.y}); | |
668 | 962 $zoomDiv.width(0).height(0); |
654 | 963 $zoomDiv.show(); |
964 // register events | |
965 $elem.bind("mousemove.digilib", zoomMove); | |
966 $elem.bind("mouseup.digilib", zoomEnd); | |
967 return false; | |
968 }; | |
668 | 969 |
654 | 970 // mouseup handler: end moving |
971 var zoomEnd = function (evt) { | |
972 pt2 = geom.position(evt); | |
973 // assume a click and continue if the area is too small | |
974 var clickRect = geom.rectangle(pt1, pt2); | |
975 if (clickRect.getArea() <= 5) { | |
976 return false; | |
977 } | |
978 // hide zoom div | |
979 $zoomDiv.remove(); | |
980 // unregister events | |
981 $elem.unbind("mousemove.digilib", zoomMove); | |
982 $elem.unbind("mouseup.digilib", zoomEnd); | |
983 // clip and transform | |
984 clickRect.clipTo(picRect); | |
985 var area = data.imgTrafo.invtransform(clickRect); | |
986 data.zoomArea = area; | |
987 // zoomed is always fit | |
988 data.settings.ws = 1; | |
989 redisplay(data); | |
990 return false; | |
991 }; | |
668 | 992 |
654 | 993 // mouse move handler |
994 var zoomMove = function (evt) { | |
995 pt2 = geom.position(evt); | |
996 var rect = geom.rectangle(pt1, pt2); | |
997 rect.clipTo(picRect); | |
998 // update zoom div | |
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999 rect.adjustDiv($zoomDiv); |
654 | 1000 return false; |
1001 }; | |
668 | 1002 |
654 | 1003 // bind start zoom handler |
1004 $scaler.one('mousedown.digilib', zoomStart); | |
1005 }; | |
647 | 1006 |
678
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1007 var birdZoom = function(data) { |
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1008 var $birdImg = data.$birdImg; |
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1009 var $birdZoom = data.$birdZoom; |
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1010 var startPos, newRect, birdImgRect, birdZoomRect; |
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1011 |
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1012 var birdZoomMove = function(evt) { |
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1013 // mousemove handler: drag |
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1014 var pos = geom.position(evt); |
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1015 var dx = pos.x - startPos.x; |
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1016 var dy = pos.y - startPos.y; |
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1017 // move birdZoom div, keeping size |
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1018 newRect = geom.rectangle( |
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1019 birdZoomRect.x + dx, |
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1020 birdZoomRect.y + dy, |
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1021 birdZoomRect.width, |
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1022 birdZoomRect.height |
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1023 ); |
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1024 // stay within birdimage |
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1025 newRect.stayInside(birdImgRect); |
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1026 $birdZoom.offset({left : newRect.x, top : newRect.y}); |
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1027 // $birdZoom.show(); |
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1028 return false; |
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1029 }; |
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1030 |
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1031 var birdZoomEndDrag = function(evt) { |
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1032 // mouseup handler: reload page |
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1033 var settings = data.settings; |
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1034 $birdImg.unbind("mousemove.digilib", birdZoomMove); |
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1035 $birdImg.unbind("mouseup.digilib", birdZoomEndDrag); |
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1036 if (newRect == null) { // no movement happened |
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1037 startPos = birdZoomRect.getCenter(); |
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1038 birdZoomMove(evt); // set center to click position |
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1039 }; |
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1040 if (data.zoomArea) { |
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1041 settings.wx = cropFloat((newRect.x - birdImgRect.x) / birdImgRect.width); |
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1042 settings.wy = cropFloat((newRect.y - birdImgRect.y) / birdImgRect.height); |
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1043 }; |
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1044 settings.ws = 1; // zoomed is always fit |
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1045 redisplay(data); |
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1046 return false; |
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1047 }; |
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1048 |
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1049 var birdZoomStartDrag = function(evt) { |
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1050 // mousedown handler: start dragging bird zoom to a new position |
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1051 startPos = geom.position(evt); |
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1052 birdImgRect = geom.rectangle($birdImg); |
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1053 birdZoomRect = geom.rectangle($birdZoom); |
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1054 $birdImg.bind("mousemove.digilib", birdZoomMove); |
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1055 $birdImg.bind("mouseup.digilib", birdZoomEndDrag); |
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1056 return false; |
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1057 }; |
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1058 |
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1059 $birdImg.one("mousedown.digilib", birdZoomStartDrag); |
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1060 // $birdZoom.one("mousedown.digilib", birdZoomStartDrag); |
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1061 }; |
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1062 |
650 | 1063 // sets a key to a value (relative values with +/- if relative=true) |
1064 var setNumValue = function(settings, key, value) { | |
1065 if (isNumber(value)) return settings[key] = value; | |
1066 var sign = value.substring(0,1); | |
1067 if (sign === '+' || sign === '-') { | |
1068 if (settings[key] == null) { | |
651
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1069 // this isn't perfect but still... |
650 | 1070 settings[key] = 0; |
1071 } | |
1072 settings[key] = parseFloat(settings[key]) + parseFloat(value); | |
1073 } else { | |
1074 settings[key] = value; | |
1075 } | |
1076 return settings[key]; | |
1077 }; | |
655 | 1078 |
1079 // auxiliary function (from old dllib.js) | |
659 | 1080 isFullArea = function(area) { |
1081 return (area.width === 1.0) && (area.height === 1.0); | |
655 | 1082 }; |
1083 | |
641 | 1084 // auxiliary function (from Douglas Crockford, A.10) |
1085 var isNumber = function isNumber(value) { | |
1086 return typeof value === 'number' && isFinite(value); | |
1087 }; | |
655 | 1088 |
631 | 1089 // auxiliary function to crop senseless precision |
1090 var cropFloat = function (x) { | |
637 | 1091 return parseInt(10000 * x, 10) / 10000; |
631 | 1092 }; |
655 | 1093 |
605 | 1094 // hook plugin into jquery |
651
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1095 $.fn.digilib = function(action) { |
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1096 if (actions[action]) { |
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1097 // call action on this with the remaining arguments (inserting data as first argument) |
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1098 var $elem = $(this); |
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1099 var data = $elem.data('digilib'); |
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1100 var args = Array.prototype.slice.call(arguments, 1); |
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1101 args.unshift(data); |
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1102 return actions[action].apply(this, args); |
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1103 } else if (typeof(action) === 'object' || !action) { |
634 | 1104 // call init on this |
651
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1105 return actions.init.apply(this, arguments); |
605 | 1106 } else { |
651
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1107 $.error( 'action ' + action + ' does not exist on jQuery.digilib' ); |
605 | 1108 } |
1109 }; | |
604 | 1110 |
1111 })(jQuery); |