Mercurial > hg > digilib-old
annotate client/digitallibrary/jquery/jquery.digilib.js @ 687:97c01b911754 jquery
fix zoom bug introduced with last change
author | hertzhaft |
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date | Wed, 26 Jan 2011 20:37:45 +0100 |
parents | 86c4174977f1 |
children | 0235a8e63818 7c8d5bfc5243 |
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 = { | |
686 | 9 log : function(){ |
10 var $debug = $('#debug'); | |
11 if (!$debug) return; | |
12 var args = Array.prototype.slice.call(arguments); | |
13 var argstr = args.join(' '); | |
14 $debug.append('<div class="_log">' + argstr + '</div>'); | |
15 }, | |
16 debug : function(){ | |
17 // debug for MSIE etc | |
18 var $debug = $('#debug'); | |
19 if (!$debug) return; | |
20 var args = Array.prototype.slice.call(arguments); | |
21 var argstr = args.join(' '); | |
22 $debug.append('<div class="_debug">' + argstr + '</div>'); | |
23 }, | |
24 error : function(){ | |
25 var $debug = $('#debug'); | |
26 if (!$debug) return; | |
27 var args = Array.prototype.slice.call(arguments); | |
28 var argstr = args.join(' '); | |
29 $debug.append('<div class="_error">' + argstr + '</div>'); | |
30 } | |
636 | 31 }; |
32 } | |
604 | 33 |
34 (function($) { | |
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35 var buttons = { |
610 | 36 reference : { |
37 onclick : "javascript:getRefWin()", | |
38 tooltip : "get a reference URL", | |
39 img : "reference.png" | |
40 }, | |
41 zoomin : { | |
643 | 42 onclick : ["zoomBy", 1.4], |
610 | 43 tooltip : "zoom in", |
44 img : "zoom-in.png" | |
45 }, | |
46 zoomout : { | |
643 | 47 onclick : ["zoomBy", 0.7], |
610 | 48 tooltip : "zoom out", |
49 img : "zoom-out.png" | |
50 }, | |
51 zoomarea : { | |
654 | 52 onclick : "zoomArea", |
610 | 53 tooltip : "zoom area", |
54 img : "zoom-area.png" | |
55 }, | |
56 zoomfull : { | |
650 | 57 onclick : "zoomFull", |
610 | 58 tooltip : "view the whole image", |
59 img : "zoom-full.png" | |
60 }, | |
61 pagewidth : { | |
650 | 62 onclick : ["zoomFull", "width"], |
610 | 63 tooltip : "page width", |
64 img : "pagewidth.png" | |
65 }, | |
66 back : { | |
623 | 67 onclick : ["gotoPage", "-1"], |
610 | 68 tooltip : "goto previous image", |
69 img : "back.png" | |
70 }, | |
71 fwd : { | |
623 | 72 onclick : ["gotoPage", "+1"], |
610 | 73 tooltip : "goto next image", |
74 img : "fwd.png" | |
75 }, | |
76 page : { | |
77 onclick : "javascript:gotoPageWin()", | |
78 tooltip : "specify image", | |
79 img : "page.png" | |
80 }, | |
81 bird : { | |
635 | 82 onclick : "showBirdDiv", |
610 | 83 tooltip : "show bird's eye view", |
84 img : "birds-eye.png" | |
85 }, | |
86 help : { | |
635 | 87 onclick : "showAboutDiv", |
610 | 88 tooltip : "about Digilib", |
89 img : "help.png" | |
90 }, | |
91 reset : { | |
92 onclick : "javascript:resetImage()", | |
93 tooltip : "reset image", | |
94 img : "reset.png" | |
95 }, | |
96 mark : { | |
647 | 97 onclick : "setMark", |
610 | 98 tooltip : "set a mark", |
99 img : "mark.png" | |
100 }, | |
101 delmark : { | |
650 | 102 onclick : "removeMark", |
610 | 103 tooltip : "delete the last mark", |
104 img : "delmark.png" | |
105 }, | |
106 hmir : { | |
661 | 107 onclick : ["mirror", "h"], |
610 | 108 tooltip : "mirror horizontally", |
109 img : "mirror-horizontal.png" | |
110 }, | |
111 vmir : { | |
661 | 112 onclick : ["mirror", "v"], |
610 | 113 tooltip : "mirror vertically", |
114 img : "mirror-vertical.png" | |
115 }, | |
116 rot : { | |
663 | 117 onclick : "rotate", |
610 | 118 tooltip : "rotate image", |
119 img : "rotate.png" | |
120 }, | |
121 brgt : { | |
663 | 122 onclick : "brightness", |
610 | 123 tooltip : "set brightness", |
124 img : "brightness.png" | |
125 }, | |
126 cont : { | |
663 | 127 onclick : "contrast", |
610 | 128 tooltip : "set contrast", |
129 img : "contrast.png" | |
130 }, | |
131 rgb : { | |
132 onclick : "javascript:setParamWin('rgb', '...')", | |
133 tooltip : "set rgb values", | |
134 img : "rgb.png" | |
135 }, | |
136 quality : { | |
137 onclick : "javascript:setQualityWin('Quality (0..2)')", | |
138 tooltip : "set image quality", | |
139 img : "quality.png" | |
140 }, | |
141 size : { | |
142 onclick : "javascript:toggleSizeMenu()", | |
143 tooltip : "set page size", | |
144 img : "size.png" | |
145 }, | |
146 calibrationx : { | |
147 onclick : "javascript:calibrate('x')", | |
148 tooltip : "calibrate screen x-ratio", | |
149 img : "calibration-x.png" | |
150 }, | |
151 scale : { | |
152 onclick : "javascript:toggleScaleMenu()", | |
153 tooltip : "change image scale", | |
154 img : "original-size.png" | |
155 }, | |
156 options : { | |
157 onclick : "javascript:toggleOptionDiv()", | |
158 tooltip : "hide options", | |
159 img : "options.png" | |
160 }, | |
161 SEP : { | |
162 img : "sep.png" | |
163 } | |
164 }; | |
617
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165 |
605 | 166 var defaults = { |
616 | 167 // version of this script |
635 | 168 'version' : 'jquery.digilib.js 0.9', |
616 | 169 // logo url |
170 'logoUrl' : '../img/digilib-logo-text1.png', | |
635 | 171 // homepage url (behind logo) |
172 'homeUrl' : 'http://digilib.berlios.de', | |
610 | 173 // base URL to Scaler servlet |
652 | 174 'scalerBaseUrl' : null, |
610 | 175 // list of Scaler parameters |
627 | 176 'scalerParamNames' : ['fn','pn','dw','dh','ww','wh','wx','wy','ws','mo', |
177 'rot','cont','brgt','rgbm','rgba','ddpi','ddpix','ddpiy'], | |
178 // Scaler parameter defaults | |
643 | 179 'pn' : 1, |
627 | 180 'ww' : 1.0, |
181 'wh' : 1.0, | |
182 'wx' : 0.0, | |
183 'wy' : 0.0, | |
184 'ws' : 1.0, | |
643 | 185 'mo' : '', |
186 'rot' : 0, | |
187 'cont' : 0, | |
188 'brgt' : 0, | |
189 'rgbm' : '0/0/0', | |
190 'rgba' : '0/0/0', | |
191 'ddpi' : null, | |
192 'ddpix' : null, | |
193 'ddpiy' : null, | |
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194 // list of digilib parameters |
650 | 195 'digilibParamNames' : ['fn','pn','ww','wh','wx','wy','ws','mo','rot','cont','brgt','rgbm','rgba','mk','clop'], |
644
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196 // digilib parameter defaults |
643 | 197 'mk' : '', |
650 | 198 'clop' : '', |
643 | 199 // mode of operation: |
200 // fullscreen = take parameters from page URL, keep state in page URL | |
201 // embedded = take parameters from Javascript options, keep state inside object | |
610 | 202 'interactionMode' : 'fullscreen', |
651
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203 // buttons |
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204 'buttons' : buttons, |
668 | 205 // defaults for digilib buttons |
665 | 206 'buttonSettings' : { |
207 'fullscreen' : { | |
668 | 208 // path to button images (must end with a slash) |
665 | 209 'imagePath' : 'img/fullscreen/', |
210 //'standardSet' : ["reference","zoomin","zoomout","zoomarea","zoomfull","pagewidth","back","fwd","page","bird","SEP","help","reset","options"], | |
211 '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"], | |
212 'specialSet' : ["mark","delmark","hmir","vmir","rot","brgt","cont","rgb","quality","size","calibrationx","scale","SEP","options"], | |
682 | 213 'buttonSets' : ['standardSet', 'specialSet'] |
665 | 214 }, |
215 'embedded' : { | |
216 'imagePath' : 'img/embedded/16/', | |
217 'standardSet' : ["reference","zoomin","zoomout","zoomarea","zoomfull","hmir","vmir","back","fwd","page","rot","brgt","cont","rgb","quality","size","scale","bird","help","options"], | |
218 'specialSet' : ["mark","delmark","hmir","vmir","rot","brgt","cont","rgb","quality","size","calibrationx","scale","SEP","options"], | |
682 | 219 'buttonSets' : ['standardSet', 'specialSet'] |
665 | 220 } |
221 }, | |
652 | 222 // button groups |
616 | 223 // is birdView shown? |
224 'isBirdDivVisible' : false, | |
668 | 225 // dimensions of bird's eye div |
674 | 226 'birdDivWidth' : 200, |
227 'birdDivHeight' : 200, | |
668 | 228 // style of the zoom area indicator in the bird's eye div |
659 | 229 'birdIndicatorStyle' : {'border' : '2px solid #ff0000' }, |
668 | 230 // style of zoom area "rubber band" |
231 'zoomrectStyle' : {'border' : '2px solid #ff0000' }, | |
616 | 232 // is the "about" window shown? |
233 'isAboutDivVisible' : false | |
234 | |
610 | 235 }; |
655 | 236 |
608 | 237 // affine geometry classes |
238 var geom = dlGeometry(); | |
655 | 239 |
643 | 240 var MAX_ZOOMAREA = geom.rectangle(0, 0, 1, 1); |
655 | 241 |
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242 var actions = { |
668 | 243 // init: digilib initialization |
244 init : function(options) { | |
245 // settings for this digilib instance are merged from defaults and options | |
246 var settings = $.extend({}, defaults, options); | |
247 var isFullscreen = settings.interactionMode === 'fullscreen'; | |
248 var queryParams = {}; | |
249 if (isFullscreen) { | |
250 queryParams = parseQueryParams(); | |
251 // check scalerBaseUrl | |
252 if (settings.scalerBaseUrl == null) { | |
253 // try the host this came from | |
254 var h = window.location.host; | |
255 if (window.location.host) { | |
256 var url = window.location.href; | |
257 // assume the page lives in [webapp]/jquery/ | |
258 var pos = url.indexOf('jquery/'); | |
259 if (pos > 0) { | |
260 settings.scalerBaseUrl = url.substring(0, pos) + 'servlet/Scaler'; | |
652 | 261 } |
262 } | |
636 | 263 } |
668 | 264 } |
265 return this.each(function() { | |
266 var $elem = $(this); | |
267 var data = $elem.data('digilib'); | |
268 var elemSettings; | |
269 // if the plugin hasn't been initialized yet | |
270 if (!data) { | |
271 // merge query parameters | |
272 if (isFullscreen) { | |
273 elemSettings = $.extend({}, settings, queryParams); | |
274 } else { | |
275 elemSettings = $.extend({}, settings, parseImgParams($elem)); | |
604 | 276 } |
668 | 277 // store $(this) element in the settings |
278 data = { | |
279 $elem : $elem, | |
280 settings : elemSettings, | |
281 queryParams : queryParams | |
282 }; | |
283 // store in data element | |
284 $elem.data('digilib', data); | |
285 } | |
286 unpackParams(data); | |
682 | 287 // create HTML structure for scaler |
668 | 288 setupScalerDiv(data); |
682 | 289 // HTML for buttons (default is first button set) |
290 setupButtons(data, 0); | |
668 | 291 // bird's eye view creation |
292 if (elemSettings.isBirdDivVisible) { | |
638 | 293 setupBirdDiv(data); |
294 } | |
668 | 295 // about window creation - TODO: could be deferred? restrict to only one item? |
296 setupAboutDiv(data); | |
297 }); | |
298 }, | |
299 | |
300 // destroy: clean up digilib | |
301 destroy : function(data) { | |
302 return this.each(function(){ | |
303 var $elem = $(this); | |
304 $(window).unbind('.digilib'); // unbind all digilibs(?) | |
305 data.digilib.remove(); | |
306 $elem.removeData('digilib'); | |
307 }); | |
308 }, | |
309 | |
310 // show or hide the 'about' window | |
311 showAboutDiv : function(data, show) { | |
312 data.settings.isAboutDivVisible = showDiv(data.settings.isAboutDivVisible, data.$aboutDiv, show); | |
313 }, | |
655 | 314 |
668 | 315 // event handler: toggles the visibility of the bird's eye window |
316 showBirdDiv : function (data, show) { | |
317 if (data.$birdDiv == null) { | |
318 // no bird div -> create | |
319 setupBirdDiv(data); | |
320 } | |
321 // TODO: keep bird view visible after reload (parameter, cookie?) | |
322 data.settings.isBirdDivVisible = showDiv(data.settings.isBirdDivVisible, data.$birdDiv, show); | |
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323 data.$birdImg.triggerHandler('load'); |
668 | 324 }, |
325 | |
326 // goto given page nr (+/-: relative) | |
327 gotoPage : function (data, pageNr) { | |
328 var settings = data.settings; | |
329 var oldpn = settings.pn; | |
330 var pn = setNumValue(settings, "pn", pageNr); | |
331 if (pn == null) return false; // nothing happened | |
332 if (pn < 1) { | |
333 alert("no such page (page number too low)"); | |
334 settings.pn = oldpn; | |
335 return false; | |
336 } | |
337 if (settings.pt) { | |
338 if (pn > settings.pt) { | |
339 alert("no such page (page number too high)"); | |
623 | 340 settings.pn = oldpn; |
341 return false; | |
634 | 342 } |
668 | 343 } |
344 // reset mk and others(?) | |
345 data.marks = []; | |
346 data.zoomArea = MAX_ZOOMAREA; | |
347 // then reload | |
348 redisplay(data); | |
349 }, | |
654 | 350 |
668 | 351 // zoom by a given factor |
352 zoomBy : function (data, factor) { | |
353 zoomBy(data, factor); | |
354 }, | |
647 | 355 |
668 | 356 // zoom interactively |
357 zoomArea : function (data) { | |
358 zoomArea(data); | |
359 }, | |
650 | 360 |
668 | 361 // zoom out to full page |
362 zoomFull : function (data, mode) { | |
363 data.zoomArea = MAX_ZOOMAREA; | |
364 if (mode === 'width') { | |
365 data.dlOpts.fitwidth = 1; | |
366 delete data.dlOpts.fitheight; | |
367 } else if (mode === 'height') { | |
368 data.dlOpts.fitheight = 1; | |
369 delete data.dlOpts.fitwidth; | |
370 } else { | |
371 delete data.dlOpts.fitwidth; | |
372 delete data.dlOpts.fitheight; | |
373 } | |
374 redisplay(data); | |
375 }, | |
376 | |
377 // set a mark by clicking (or giving a position) | |
378 setMark : function (data, mpos) { | |
379 if (mpos == null) { | |
380 // interactive | |
381 setMark(data); | |
382 } else { | |
383 // use position | |
384 data.marks.push(pos); | |
663 | 385 redisplay(data); |
604 | 386 } |
668 | 387 }, |
388 | |
389 // remove the last mark | |
390 removeMark : function (data) { | |
391 data.marks.pop(); | |
392 redisplay(data); | |
393 }, | |
394 | |
395 // mirror the image | |
396 mirror : function (data, mode) { | |
397 var flags = data.scalerFlags; | |
398 if (mode === 'h') { | |
399 if (flags.hmir) { | |
400 delete flags.hmir; | |
401 } else { | |
402 flags.hmir = 1; | |
403 } | |
404 } else { | |
405 if (flags.vmir) { | |
406 delete flags.vmir; | |
407 } else { | |
408 flags.vmir = 1; | |
409 } | |
410 } | |
411 redisplay(data); | |
412 }, | |
650 | 413 |
668 | 414 // rotate the image |
415 rotate : function (data, angle) { | |
416 var rot = data.settings.rot; | |
417 if (angle == null) { | |
418 angle = window.prompt("Rotation angle:", rot); | |
419 } | |
420 data.settings.rot = angle; | |
421 redisplay(data); | |
422 }, | |
423 | |
424 // change brightness | |
425 brightness : function (data, factor) { | |
426 var brgt = data.settings.brgt; | |
427 if (factor == null) { | |
428 factor = window.prompt("Brightness (-255..255)", brgt); | |
429 } | |
430 data.settings.brgt = factor; | |
431 redisplay(data); | |
432 }, | |
433 | |
434 // change contrast | |
435 contrast : function (data, factor) { | |
436 var cont = data.settings.cont; | |
437 if (factor == null) { | |
438 factor = window.prompt("Contrast (-8, 8)", cont); | |
439 } | |
440 data.settings.cont = factor; | |
441 redisplay(data); | |
442 } | |
605 | 443 }; |
604 | 444 |
608 | 445 // returns parameters from page url |
607 | 446 var parseQueryParams = function() { |
636 | 447 return parseQueryString(window.location.search.slice(1)); |
448 }; | |
655 | 449 |
636 | 450 // returns parameters from embedded img-element |
607 | 451 var parseImgParams = function($elem) { |
613
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452 var src = $elem.find('img').first().attr('src'); |
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453 if (!src) { |
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454 return null; |
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455 } |
607 | 456 var pos = src.indexOf('?'); |
457 var query = (pos < 0) ? '' : src.substring(pos + 1); | |
458 var scalerUrl = src.substring(0, pos); | |
627 | 459 var params = parseQueryString(query); |
460 params.scalerBaseUrl = scalerUrl; | |
461 return params; | |
636 | 462 }; |
607 | 463 |
608 | 464 // parses query parameter string into parameter object |
607 | 465 var parseQueryString = function(query) { |
466 var pairs = query.split("&"); | |
627 | 467 var params = {}; |
636 | 468 //var keys = []; |
607 | 469 for (var i = 0; i < pairs.length; i++) { |
470 var pair = pairs[i].split("="); | |
471 if (pair.length === 2) { | |
627 | 472 params[pair[0]] = pair[1]; |
636 | 473 //keys.push(pair[0]); |
634 | 474 } |
636 | 475 } |
627 | 476 return params; |
636 | 477 }; |
668 | 478 |
643 | 479 // returns a query string from key names from a parameter hash (ignoring if the same value is in defaults) |
480 var getParamString = function (settings, keys, defaults) { | |
615 | 481 var paramString = ''; |
650 | 482 var nx = false; |
615 | 483 for (i = 0; i < keys.length; ++i) { |
484 var key = keys[i]; | |
663 | 485 if ((settings[key] != null) && ((defaults == null) || (settings[key] != defaults[key]))) { |
615 | 486 // first param gets no '&' |
650 | 487 if (nx) { |
488 paramString += '&'; | |
489 } else { | |
490 nx = true; | |
491 } | |
615 | 492 // add parm=val |
493 paramString += key + '=' + settings[key]; | |
643 | 494 } |
615 | 495 } |
496 return paramString; | |
631 | 497 }; |
498 | |
636 | 499 // returns URL and query string for Scaler |
500 var getScalerUrl = function (data) { | |
653 | 501 var settings = data.settings; |
652 | 502 if (settings.scalerBaseUrl == null) { |
503 alert("ERROR: URL of digilib Scaler servlet missing!"); | |
504 } | |
665 | 505 packParams(data); |
636 | 506 var keys = settings.scalerParamNames; |
643 | 507 var queryString = getParamString(settings, keys, defaults); |
636 | 508 var url = settings.scalerBaseUrl + '?' + queryString; |
509 return url; | |
510 }; | |
511 | |
512 // returns URL and query string for current digilib | |
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513 var getDigilibUrl = function (data) { |
643 | 514 packParams(data); |
636 | 515 var settings = data.settings; |
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516 var queryString = getParamString(settings, settings.digilibParamNames, defaults); |
636 | 517 var url = window.location.toString(); |
518 var pos = url.indexOf('?'); | |
519 var baseUrl = url.substring(0, pos); | |
520 var newurl = baseUrl + '?' + queryString; | |
521 return newurl; | |
522 }; | |
523 | |
655 | 524 // processes some parameters into objects and stuff |
631 | 525 var unpackParams = function (data) { |
526 var settings = data.settings; | |
636 | 527 // zoom area |
631 | 528 var zoomArea = geom.rectangle(settings.wx, settings.wy, settings.ww, settings.wh); |
643 | 529 data.zoomArea = zoomArea; |
636 | 530 // marks |
631 | 531 var marks = []; |
650 | 532 if (settings.mk) { |
533 var mk = settings.mk; | |
534 if (mk.indexOf(";") >= 0) { | |
535 var pa = mk.split(";"); // old format with ";" | |
536 } else { | |
537 var pa = mk.split(","); // new format | |
538 } | |
539 for (var i = 0; i < pa.length ; i++) { | |
540 var pos = pa[i].split("/"); | |
541 if (pos.length > 1) { | |
542 marks.push(geom.position(pos[0], pos[1])); | |
543 } | |
633 | 544 } |
631 | 545 } |
643 | 546 data.marks = marks; |
650 | 547 // mo (Scaler flags) |
548 var flags = {}; | |
549 if (settings.mo) { | |
550 var pa = settings.mo.split(","); | |
551 for (var i = 0; i < pa.length ; i++) { | |
552 flags[pa[i]] = pa[i]; | |
553 } | |
554 } | |
555 data.scalerFlags = flags; | |
556 // clop (digilib options) | |
557 var opts = {}; | |
558 if (settings.clop) { | |
559 var pa = settings.clop.split(","); | |
560 for (var i = 0; i < pa.length ; i++) { | |
561 opts[pa[i]] = pa[i]; | |
562 } | |
563 } | |
564 data.dlOpts = opts; | |
661 | 565 // birdview option |
566 if (opts.birdview) { | |
567 settings.isBirdDivVisible = 1; | |
568 } | |
655 | 569 }; |
570 | |
631 | 571 // put objects back into parameters |
572 var packParams = function (data) { | |
573 var settings = data.settings; | |
636 | 574 // zoom area |
643 | 575 if (data.zoomArea) { |
647 | 576 settings.wx = cropFloat(data.zoomArea.x); |
577 settings.wy = cropFloat(data.zoomArea.y); | |
578 settings.ww = cropFloat(data.zoomArea.width); | |
579 settings.wh = cropFloat(data.zoomArea.height); | |
631 | 580 } |
636 | 581 // marks |
643 | 582 if (data.marks) { |
650 | 583 settings.mk = ''; |
643 | 584 for (var i = 0; i < data.marks.length; i++) { |
650 | 585 if (i) { |
586 settings.mk += ','; | |
587 } | |
588 settings.mk += cropFloat(data.marks[i].x).toString() + '/' + cropFloat(data.marks[i].y).toString(); | |
631 | 589 } |
650 | 590 } |
591 // Scaler flags | |
592 if (data.scalerFlags) { | |
593 var mo = ''; | |
594 for (var f in data.scalerFlags) { | |
595 if (mo) { | |
596 mo += ','; | |
597 } | |
598 mo += f; | |
599 } | |
600 settings.mo = mo; | |
601 } | |
661 | 602 // digilib option birdview |
603 if (settings.isBirdDivVisible) { | |
604 data.dlOpts.birdview = 1; | |
662 | 605 } else { |
606 delete data.dlOpts.birdview; | |
661 | 607 } |
650 | 608 // digilib options |
609 if (data.dlOpts) { | |
610 var clop = ''; | |
611 for (var o in data.dlOpts) { | |
612 if (clop) { | |
613 clop += ','; | |
614 } | |
615 clop += o; | |
616 } | |
617 settings.clop = clop; | |
631 | 618 } |
619 }; | |
655 | 620 |
622 | 621 // (re)load the img from a new scaler URL |
644
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622 var redisplay = function (data) { |
636 | 623 var settings = data.settings; |
624 if (settings.interactionMode === 'fullscreen') { | |
625 // update location.href (browser URL) in fullscreen mode | |
644
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626 var url = getDigilibUrl(data); |
636 | 627 var history = window.history; |
628 if (typeof(history.pushState) === 'function') { | |
629 console.debug("we could modify history, but we don't..."); | |
630 } | |
631 window.location = url; | |
632 } else { | |
633 // embedded mode -- just change img src | |
634 var url = getScalerUrl(data); | |
635 data.$img.attr('src', url); | |
677
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636 // and update bird's eye view |
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637 //if (settings.isBirdDivVisible) { |
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638 // renderBirdZoom(data); |
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639 //} |
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640 }; |
622 | 641 }; |
642 | |
662 | 643 // returns maximum size for scaler img in fullscreen mode |
644 var getFullscreenImgSize = function($elem) { | |
645 var $win = $(window); | |
646 var winH = $win.height(); | |
647 var winW = $win.width(); | |
648 // TODO: account for borders? | |
649 return geom.size(winW, winH); | |
650 }; | |
651 | |
608 | 652 // creates HTML structure for digilib in elem |
627 | 653 var setupScalerDiv = function (data) { |
654 var settings = data.settings; | |
647 | 655 var $elem = data.$elem; |
686 | 656 var $img, scalerUrl; |
657 // fullscreen | |
608 | 658 if (settings.interactionMode === 'fullscreen') { |
609 | 659 var imgSize = getFullscreenImgSize($elem); |
650 | 660 // fitwidth/height omits destination height/width |
661 if (data.dlOpts['fitheight'] == null) { | |
662 settings.dw = imgSize.width; | |
686 | 663 }; |
650 | 664 if (data.dlOpts['fitwidth'] == null) { |
665 settings.dh = imgSize.height; | |
686 | 666 }; |
613
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667 $img = $('<img/>'); |
686 | 668 scalerUrl = getScalerUrl(data); |
669 // embedded mode -- try to keep img tag | |
609 | 670 } else { |
623 | 671 $img = $elem.find('img'); |
613
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672 if ($img.length > 0) { |
686 | 673 console.debug("img detach:", $img); |
674 scalerUrl = $img.attr('src'); | |
613
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675 $img.detach(); |
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676 } else { |
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677 $img = $('<img/>'); |
686 | 678 scalerUrl = getScalerUrl(data); |
679 }; | |
608 | 680 } |
613
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681 // create new html |
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682 $elem.empty(); // TODO: should we keep stuff for customization? |
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683 var $scaler = $('<div class="scaler"/>'); |
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684 $elem.append($scaler); |
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685 $scaler.append($img); |
622 | 686 $img.addClass('pic'); |
649 | 687 data.$scaler = $scaler; |
636 | 688 data.$img = $img; |
687 | 689 // setup image load handler before setting the src attribute (IE bug) |
690 $img.load(scalerImgLoadedHandler(data)); | |
691 $img.attr('src', scalerUrl); | |
608 | 692 }; |
615 | 693 |
610 | 694 // creates HTML structure for buttons in elem |
682 | 695 var setupButtons = function (data, buttonSetIdx) { |
647 | 696 var $elem = data.$elem; |
628
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697 var settings = data.settings; |
665 | 698 var $buttonsDiv = $('<div class="buttons"></div>'); |
699 $elem.append($buttonsDiv); | |
700 var mode = settings.interactionMode; | |
672
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701 var buttonSettings = settings.buttonSettings[mode]; |
682 | 702 var buttonGroup = buttonSettings.buttonSets[buttonSetIdx]; |
703 var buttonNames = buttonSettings[buttonGroup]; | |
704 for (var i = 0; i < buttonNames.length; i++) { | |
705 var buttonName = buttonNames[i]; | |
706 var buttonConfig = settings.buttons[buttonName]; | |
665 | 707 // construct the button html |
708 var $button = $('<div class="button"></div>'); | |
709 var $a = $('<a/>'); | |
710 var $img = $('<img class="button"/>'); | |
711 $buttonsDiv.append($button); | |
712 $button.append($a); | |
713 $a.append($img); | |
714 // add attributes and bindings | |
715 $button.attr('title', buttonConfig.tooltip); | |
682 | 716 $button.addClass('button-' + buttonName); |
665 | 717 // create handler for the buttons |
718 $a.bind('click.digilib', (function () { | |
719 // we create a new closure to capture the value of action | |
720 var action = buttonConfig.onclick; | |
721 if ($.isArray(action)) { | |
722 // the handler function calls digilib with action and parameters | |
723 return function (evt) { | |
724 console.debug('click action=', action, ' evt=', evt); | |
725 $elem.digilib.apply($elem, action); | |
726 return false; | |
727 }; | |
728 } else { | |
729 // the handler function calls digilib with action | |
730 return function (evt) { | |
731 console.debug('click action=', action, ' evt=', evt); | |
732 $elem.digilib(action); | |
733 return false; | |
734 }; | |
735 } | |
736 })()); | |
737 $img.attr('src', buttonSettings.imagePath + buttonConfig.img); | |
637 | 738 } |
662 | 739 // make buttons div scroll if too large for window |
740 if ($buttonsDiv.height() > $(window).height() - 10) { | |
741 $buttonsDiv.css('position', 'absolute'); | |
742 } | |
682 | 743 if (data.$buttonSets == null) { |
744 data.$buttonSets = [$buttonsDiv]; | |
745 data.visibleButtonSets = 1; | |
746 } else { | |
747 data.$buttonSets[buttonSetIdx] = $buttonsDiv; | |
748 } | |
612 | 749 return $buttonsDiv; |
610 | 750 }; |
615 | 751 |
752 // creates HTML structure for the bird's eye view in elem | |
638 | 753 var setupBirdDiv = function (data) { |
647 | 754 var $elem = data.$elem; |
628
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755 var settings = data.settings; |
615 | 756 // use only the relevant parameters |
757 var keys = ['fn','pn','dw','dh']; | |
674 | 758 var birdDivOptions = { |
759 dw : settings.birdDivWidth, | |
760 dh : settings.birdDivHeight | |
761 }; | |
762 var birdSettings = $.extend({}, settings, birdDivOptions); | |
628
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763 var birdUrl = settings.scalerBaseUrl + '?' + getParamString(birdSettings, keys); |
615 | 764 // the bird's eye div |
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765 var $birdDiv = $('<div class="birdview" style="display:none"/>'); |
615 | 766 // the detail indicator frame |
678
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767 var $birdZoom = $('<div class="birdZoom" style="display:none; position:absolute; background-color:transparent;"/>'); |
615 | 768 // the small image |
769 var $birdImg = $('<img class="birdimg"/>'); | |
658
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770 $elem.append($birdDiv); |
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771 $birdDiv.append($birdZoom); |
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772 $birdDiv.append($birdImg); |
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773 $birdZoom.css(data.settings.birdIndicatorStyle); |
658
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774 data.$birdDiv = $birdDiv; |
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775 data.$birdZoom = $birdZoom; |
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776 data.$birdImg = $birdImg; |
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777 $birdImg.load(birdImgLoadedHandler(data)); |
615 | 778 $birdImg.attr('src', birdUrl); |
640
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779 if (data.settings.isBirdDivVisible) { |
687 | 780 $birdDiv.show(); |
678
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781 }; |
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782 birdZoom(data); |
640
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783 }; |
615 | 784 |
625 | 785 // creates HTML structure for the about view in elem |
628
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786 var setupAboutDiv = function (data) { |
647 | 787 var $elem = data.$elem; |
628
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788 var settings = data.settings; |
625 | 789 var $aboutDiv = $('<div class="about" style="display:none"/>'); |
616 | 790 var $header = $('<p>Digilib Graphic Viewer</p>'); |
791 var $link = $('<a/>'); | |
792 var $logo = $('<img class="logo" title="digilib"/>'); | |
793 var $content = $('<p/>'); | |
794 $elem.append($aboutDiv); | |
795 $aboutDiv.append($header); | |
796 $aboutDiv.append($link); | |
797 $aboutDiv.append($content); | |
798 $link.append($logo); | |
799 $logo.attr('src', settings.logoUrl); | |
635 | 800 $link.attr('href', settings.homeUrl); |
616 | 801 $content.text('Version: ' + settings.version); |
635 | 802 // click hides |
649 | 803 $aboutDiv.bind('click.digilib', function () { |
646 | 804 settings.isAboutDivVisible = showDiv(settings.isAboutDivVisible, $aboutDiv, 0); |
649 | 805 return false; |
806 }); | |
635 | 807 data.$aboutDiv = $aboutDiv; |
634 | 808 }; |
809 | |
635 | 810 // shows some window e.g. 'about' (toggle visibility if show is null) |
811 var showDiv = function (isVisible, $div, show) { | |
645 | 812 if (show == null) { |
635 | 813 // toggle visibility |
814 isVisible = !isVisible; | |
815 } else { | |
816 // set visibility | |
817 isVisible = show; | |
818 } | |
819 if (isVisible) { | |
820 $div.fadeIn(); | |
821 } else { | |
822 $div.fadeOut(); | |
823 } | |
824 return isVisible; | |
634 | 825 }; |
616 | 826 |
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827 // create Transform from area and $img |
675 | 828 var getImgTrafo = function ($img, area, rot, hmir, vmir) { |
658
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829 var picrect = geom.rectangle($img); |
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830 var trafo = geom.transform(); |
675 | 831 // move zoom area offset to center |
658
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832 trafo.concat(trafo.getTranslation(geom.position(-area.x, -area.y))); |
675 | 833 // scale zoom area size to [1,1] |
658
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834 trafo.concat(trafo.getScale(geom.size(1/area.width, 1/area.height))); |
675 | 835 // rotate and mirror (around transformed image center i.e. [0.5,0.5]) |
836 if (rot || hmir || vmir) { | |
837 // move [0.5,0.5] to center | |
838 trafo.concat(trafo.getTranslation(geom.position(-0.5, -0.5))); | |
839 if (hmir) { | |
840 // mirror about center | |
841 trafo.concat(trafo.getMirror('y')); | |
842 } | |
843 if (vmir) { | |
844 // mirror about center | |
845 trafo.concat(trafo.getMirror('x')); | |
846 } | |
847 if (rot) { | |
848 // rotate around center | |
849 trafo.concat(trafo.getRotation(parseFloat(rot))); | |
850 } | |
851 // move back | |
852 trafo.concat(trafo.getTranslation(geom.position(0.5, 0.5))); | |
664
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853 } |
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854 // scale to screen position and size |
658
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855 trafo.concat(trafo.getScale(picrect)); |
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856 trafo.concat(trafo.getTranslation(picrect)); |
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857 return trafo; |
655 | 858 }; |
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859 |
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860 // returns function for load event of scaler img |
636 | 861 var scalerImgLoadedHandler = function (data) { |
862 var $img = data.$img; | |
633 | 863 return function () { |
627 | 864 console.debug("img loaded! this=", this, " data=", data); |
865 // create Transform from current area and picsize | |
675 | 866 data.imgTrafo = getImgTrafo($img, data.zoomArea, |
867 data.settings.rot, data.scalerFlags.hmir, data.scalerFlags.vmir); | |
686 | 868 console.debug("imgTrafo=", data.imgTrafo); |
627 | 869 // display marks |
633 | 870 renderMarks(data); |
627 | 871 //digilib.showArrows(); // show arrow overlays for zoom navigation |
678
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872 var $birdImg = data.$birdImg; |
670
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873 if ($birdImg) { |
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874 $birdImg.triggerHandler('load'); |
678
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875 }; |
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876 }; |
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877 }; |
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878 |
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879 // returns function for load event of bird's eye view img |
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880 var birdImgLoadedHandler = function (data) { |
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881 var $img = data.$birdImg; |
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882 return function () { |
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883 console.debug("birdimg loaded! this=", this, " data=", data); |
658
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884 // create Transform from current area and picsize |
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885 data.birdTrafo = getImgTrafo($img, MAX_ZOOMAREA); |
668 | 886 // display red indicator around zoomarea |
678
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887 renderbirdZoom(data); |
613
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888 }; |
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889 }; |
633 | 890 |
891 // place marks on the image | |
892 var renderMarks = function (data) { | |
647 | 893 var $elem = data.$elem; |
643 | 894 var marks = data.marks; |
649 | 895 // TODO: clear marks first(?) |
633 | 896 for (var i = 0; i < marks.length; i++) { |
897 var mark = marks[i]; | |
643 | 898 if (data.zoomArea.containsPosition(mark)) { |
633 | 899 var mpos = data.imgTrafo.transform(mark); |
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900 console.debug("renderMarks: mpos=",mpos); |
633 | 901 // create mark |
902 var html = '<div class="mark">'+(i+1)+'</div>'; | |
903 var $mark = $(html); | |
904 $elem.append($mark); | |
654 | 905 $mark.offset({left : mpos.x, top : mpos.y}); |
633 | 906 } |
907 } | |
908 }; | |
655 | 909 |
677
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910 // show zoom area indicator on bird's eye view |
678
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911 var renderbirdZoom = function (data) { |
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912 var $birdZoom = data.$birdZoom; |
659 | 913 var zoomArea = data.zoomArea; |
914 var indRect = data.birdTrafo.transform(zoomArea); | |
670
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915 var coords = { |
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916 left : indRect.x-2, // acount for frame width |
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917 top : indRect.y-2, |
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918 width : indRect.width, |
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919 height: indRect.height |
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920 }; |
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921 var normalSize = isFullArea(zoomArea); |
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922 if (data.settings.interactionMode === 'fullscreen') { |
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923 // no animation for fullscreen |
678
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924 if (normalSize) return $birdZoom.hide(); |
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925 $birdZoom.width(coords.width); |
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926 $birdZoom.height(coords.height); |
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927 $birdZoom.offset(coords); |
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928 $birdZoom.show(); |
670
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929 return; |
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930 }; |
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931 // nice animation for embedded mode :-) |
678
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932 var makeCompleteFunction = function($birdZoom, normalSize) { |
670
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933 return function() { |
678
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934 if (normalSize) $birdZoom.hide(); |
672
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935 }; |
670
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936 }; |
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937 var opts = { |
678
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938 'complete' : makeCompleteFunction($birdZoom, normalSize) |
670
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939 }; |
678
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940 if (!normalSize && $birdZoom.css('display') === 'none') $birdZoom.show(); |
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941 $birdZoom.animate(coords, opts); |
664
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942 }; |
659 | 943 |
647 | 944 // zooms by the given factor |
643 | 945 var zoomBy = function(data, factor) { |
946 var area = data.zoomArea; | |
947 var newarea = area.copy(); | |
948 // scale | |
949 newarea.width /= factor; | |
950 newarea.height /= factor; | |
951 // and recenter | |
952 newarea.x -= 0.5 * (newarea.width - area.width); | |
953 newarea.y -= 0.5 * (newarea.height - area.height); | |
954 newarea = MAX_ZOOMAREA.fit(newarea); | |
955 data.zoomArea = newarea; | |
644
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956 redisplay(data); |
643 | 957 }; |
958 | |
647 | 959 // add a mark where clicked |
960 var setMark = function (data) { | |
649 | 961 var $scaler = data.$scaler; |
647 | 962 // start event capturing |
649 | 963 $scaler.one('click.digilib', function (evt) { |
647 | 964 // event handler adding a new mark |
672
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965 var mpos = geom.position(evt); |
647 | 966 var pos = data.imgTrafo.invtransform(mpos); |
967 data.marks.push(pos); | |
968 redisplay(data); | |
649 | 969 return false; // do we even get here? |
647 | 970 }); |
971 }; | |
668 | 972 |
654 | 973 var zoomArea = function(data) { |
974 $elem = data.$elem; | |
975 $scaler = data.$scaler; | |
976 var pt1, pt2; | |
977 var $zoomDiv = $('<div class="zoomrect" style="display:none"/>'); | |
978 $elem.append($zoomDiv); | |
668 | 979 $zoomDiv.css(data.settings.zoomrectStyle); |
654 | 980 var picRect = geom.rectangle($scaler); |
981 // FIX ME: is there a way to query the border width from CSS info? | |
982 // rect.x -= 2; // account for overlay borders | |
983 // rect.y -= 2; | |
984 | |
985 var zoomStart = function (evt) { | |
986 pt1 = geom.position(evt); | |
987 // setup and show zoom div | |
988 //moveElement(zoomdiv, Rectangle(pt1.x, pt1.y, 0, 0)); | |
989 $zoomDiv.offset({left : pt1.x, top : pt1.y}); | |
668 | 990 $zoomDiv.width(0).height(0); |
654 | 991 $zoomDiv.show(); |
992 // register events | |
993 $elem.bind("mousemove.digilib", zoomMove); | |
994 $elem.bind("mouseup.digilib", zoomEnd); | |
995 return false; | |
996 }; | |
668 | 997 |
654 | 998 // mouseup handler: end moving |
999 var zoomEnd = function (evt) { | |
1000 pt2 = geom.position(evt); | |
1001 // assume a click and continue if the area is too small | |
1002 var clickRect = geom.rectangle(pt1, pt2); | |
1003 if (clickRect.getArea() <= 5) { | |
1004 return false; | |
1005 } | |
1006 // hide zoom div | |
1007 $zoomDiv.remove(); | |
1008 // unregister events | |
1009 $elem.unbind("mousemove.digilib", zoomMove); | |
1010 $elem.unbind("mouseup.digilib", zoomEnd); | |
1011 // clip and transform | |
1012 clickRect.clipTo(picRect); | |
1013 var area = data.imgTrafo.invtransform(clickRect); | |
1014 data.zoomArea = area; | |
1015 // zoomed is always fit | |
1016 data.settings.ws = 1; | |
1017 redisplay(data); | |
1018 return false; | |
1019 }; | |
668 | 1020 |
654 | 1021 // mouse move handler |
1022 var zoomMove = function (evt) { | |
1023 pt2 = geom.position(evt); | |
1024 var rect = geom.rectangle(pt1, pt2); | |
1025 rect.clipTo(picRect); | |
1026 // update zoom div | |
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1027 rect.adjustDiv($zoomDiv); |
654 | 1028 return false; |
1029 }; | |
668 | 1030 |
654 | 1031 // bind start zoom handler |
1032 $scaler.one('mousedown.digilib', zoomStart); | |
1033 }; | |
647 | 1034 |
678
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1035 var birdZoom = function(data) { |
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1036 var $birdImg = data.$birdImg; |
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1037 var $birdZoom = data.$birdZoom; |
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1038 var startPos, newRect, birdImgRect, birdZoomRect; |
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1039 |
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1040 var birdZoomMove = function(evt) { |
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1041 // mousemove handler: drag |
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1042 var pos = geom.position(evt); |
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1043 var dx = pos.x - startPos.x; |
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1044 var dy = pos.y - startPos.y; |
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1045 // move birdZoom div, keeping size |
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1046 newRect = geom.rectangle( |
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1047 birdZoomRect.x + dx, |
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1048 birdZoomRect.y + dy, |
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1049 birdZoomRect.width, |
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1050 birdZoomRect.height |
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1051 ); |
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1052 // stay within birdimage |
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1053 newRect.stayInside(birdImgRect); |
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1054 $birdZoom.offset({left : newRect.x, top : newRect.y}); |
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1055 // $birdZoom.show(); |
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1056 return false; |
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|
1057 }; |
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1058 |
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1059 var birdZoomEndDrag = function(evt) { |
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1060 // mouseup handler: reload page |
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1061 var settings = data.settings; |
680 | 1062 $(document).unbind("mousemove.digilib", birdZoomMove); |
1063 $(document).unbind("mouseup.digilib", birdZoomEndDrag); | |
1064 $birdZoom.unbind("mousemove.digilib", birdZoomMove); | |
1065 $birdZoom.unbind("mouseup.digilib", birdZoomEndDrag); | |
678
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1066 if (newRect == null) { // no movement happened |
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1067 startPos = birdZoomRect.getCenter(); |
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1068 birdZoomMove(evt); // set center to click position |
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1069 }; |
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1070 if (data.zoomArea) { |
679 | 1071 // should always be true |
1072 var x = cropFloat((newRect.x - birdImgRect.x + 2) / birdImgRect.width); | |
1073 var y = cropFloat((newRect.y - birdImgRect.y + 2) / birdImgRect.height); | |
1074 data.zoomArea.x = x; | |
1075 data.zoomArea.y = y; | |
678
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1076 }; |
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1077 settings.ws = 1; // zoomed is always fit |
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1078 redisplay(data); |
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1079 return false; |
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|
1080 }; |
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1081 |
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1082 var birdZoomStartDrag = function(evt) { |
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1083 // mousedown handler: start dragging bird zoom to a new position |
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1084 startPos = geom.position(evt); |
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1085 birdImgRect = geom.rectangle($birdImg); |
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1086 birdZoomRect = geom.rectangle($birdZoom); |
680 | 1087 $(document).bind("mousemove.digilib", birdZoomMove); |
1088 $(document).bind("mouseup.digilib", birdZoomEndDrag); | |
1089 $birdZoom.bind("mousemove.digilib", birdZoomMove); | |
1090 $birdZoom.bind("mouseup.digilib", birdZoomEndDrag); | |
678
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1091 return false; |
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1092 }; |
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1093 |
681 | 1094 $birdImg.bind("mousedown.digilib", birdZoomStartDrag); |
1095 $birdZoom.bind("mousedown.digilib", birdZoomStartDrag); | |
678
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1096 }; |
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1097 |
650 | 1098 // sets a key to a value (relative values with +/- if relative=true) |
1099 var setNumValue = function(settings, key, value) { | |
1100 if (isNumber(value)) return settings[key] = value; | |
1101 var sign = value.substring(0,1); | |
1102 if (sign === '+' || sign === '-') { | |
1103 if (settings[key] == null) { | |
651
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1104 // this isn't perfect but still... |
650 | 1105 settings[key] = 0; |
1106 } | |
1107 settings[key] = parseFloat(settings[key]) + parseFloat(value); | |
1108 } else { | |
1109 settings[key] = value; | |
1110 } | |
1111 return settings[key]; | |
1112 }; | |
655 | 1113 |
1114 // auxiliary function (from old dllib.js) | |
659 | 1115 isFullArea = function(area) { |
1116 return (area.width === 1.0) && (area.height === 1.0); | |
655 | 1117 }; |
1118 | |
641 | 1119 // auxiliary function (from Douglas Crockford, A.10) |
1120 var isNumber = function isNumber(value) { | |
1121 return typeof value === 'number' && isFinite(value); | |
1122 }; | |
655 | 1123 |
631 | 1124 // auxiliary function to crop senseless precision |
1125 var cropFloat = function (x) { | |
637 | 1126 return parseInt(10000 * x, 10) / 10000; |
631 | 1127 }; |
655 | 1128 |
605 | 1129 // hook plugin into jquery |
651
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1130 $.fn.digilib = function(action) { |
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1131 if (actions[action]) { |
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1132 // call action on this with the remaining arguments (inserting data as first argument) |
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1133 var $elem = $(this); |
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1134 var data = $elem.data('digilib'); |
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1135 var args = Array.prototype.slice.call(arguments, 1); |
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1136 args.unshift(data); |
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1137 return actions[action].apply(this, args); |
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1138 } else if (typeof(action) === 'object' || !action) { |
634 | 1139 // call init on this |
651
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1140 return actions.init.apply(this, arguments); |
605 | 1141 } else { |
651
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1142 $.error( 'action ' + action + ' does not exist on jQuery.digilib' ); |
605 | 1143 } |
1144 }; | |
604 | 1145 |
1146 })(jQuery); |