Mercurial > hg > digilib-old
annotate client/digitallibrary/jquery/jquery.digilib.js @ 643:c108607e1bc0 jquery
zoomin and -out works now
gotopage resets (some) parameters
reload takes changed parameters (to put in url)
getParamString omits parameters with default values (for shorter urls)
| author | robcast |
|---|---|
| date | Wed, 19 Jan 2011 20:03:44 +0100 |
| parents | 8f40f7b6fd20 |
| children | ee8ccd84c5f8 |
| rev | line source |
|---|---|
| 604 | 1 /* |
| 2 * digilib jQuery plugin | |
| 3 * | |
| 4 */ | |
| 636 | 5 |
| 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 actions = { |
| 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 : { | |
| 33 onclick : "javascript:zoomArea()", | |
| 34 tooltip : "zoom area", | |
| 35 img : "zoom-area.png" | |
| 36 }, | |
| 37 zoomfull : { | |
| 38 onclick : "javascript:zoomFullpage()", | |
| 39 tooltip : "view the whole image", | |
| 40 img : "zoom-full.png" | |
| 41 }, | |
| 42 pagewidth : { | |
| 43 onclick : "javascript:zoomFullpage('width')", | |
| 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 : { | |
| 78 onclick : "javascript:setMark()", | |
| 79 tooltip : "set a mark", | |
| 80 img : "mark.png" | |
| 81 }, | |
| 82 delmark : { | |
| 83 onclick : "javascript:removeMark()", | |
| 84 tooltip : "delete the last mark", | |
| 85 img : "delmark.png" | |
| 86 }, | |
| 87 hmir : { | |
| 88 onclick : "javascript:mirror('h')", | |
| 89 tooltip : "mirror horizontally", | |
| 90 img : "mirror-horizontal.png" | |
| 91 }, | |
| 92 vmir : { | |
| 93 onclick : "javascript:mirror('v')", | |
| 94 tooltip : "mirror vertically", | |
| 95 img : "mirror-vertical.png" | |
| 96 }, | |
| 97 rot : { | |
| 98 onclick : "javascript:setParamWin('rot', 'Rotate (0..360) clockwise')", | |
| 99 tooltip : "rotate image", | |
| 100 img : "rotate.png" | |
| 101 }, | |
| 102 brgt : { | |
| 103 onclick : "javascript:setParamWin('brgt', 'Brightness (-255..255)')", | |
| 104 tooltip : "set brightness", | |
| 105 img : "brightness.png" | |
| 106 }, | |
| 107 cont : { | |
| 108 onclick : "javascript:setParamWin('cont', 'Contrast (0..8)')", | |
| 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 = { |
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148 // the root digilib element, for easy retrieval |
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149 'digilibRoot' : null, |
| 616 | 150 // version of this script |
| 635 | 151 'version' : 'jquery.digilib.js 0.9', |
| 616 | 152 // logo url |
| 153 'logoUrl' : '../img/digilib-logo-text1.png', | |
| 635 | 154 // homepage url (behind logo) |
| 155 'homeUrl' : 'http://digilib.berlios.de', | |
| 610 | 156 // base URL to Scaler servlet |
| 157 'scalerBaseUrl' : 'http://digilib.mpiwg-berlin.mpg.de/digitallibrary/servlet/Scaler', | |
| 158 // list of Scaler parameters | |
| 627 | 159 'scalerParamNames' : ['fn','pn','dw','dh','ww','wh','wx','wy','ws','mo', |
| 160 'rot','cont','brgt','rgbm','rgba','ddpi','ddpix','ddpiy'], | |
| 161 // Scaler parameter defaults | |
| 643 | 162 'pn' : 1, |
| 627 | 163 'ww' : 1.0, |
| 164 'wh' : 1.0, | |
| 165 'wx' : 0.0, | |
| 166 'wy' : 0.0, | |
| 167 'ws' : 1.0, | |
| 643 | 168 'mo' : '', |
| 169 'rot' : 0, | |
| 170 'cont' : 0, | |
| 171 'brgt' : 0, | |
| 172 'rgbm' : '0/0/0', | |
| 173 'rgba' : '0/0/0', | |
| 174 'ddpi' : null, | |
| 175 'ddpix' : null, | |
| 176 'ddpiy' : null, | |
| 177 // digilib defaults | |
| 178 'mk' : '', | |
| 179 // mode of operation: | |
| 180 // fullscreen = take parameters from page URL, keep state in page URL | |
| 181 // embedded = take parameters from Javascript options, keep state inside object | |
| 610 | 182 'interactionMode' : 'fullscreen', |
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183 // actions |
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184 'actions' : actions, |
| 612 | 185 // path to button images (must end with a slash) |
| 186 'buttonsImagePath' : '../greyskin/', | |
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187 // actions groups |
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188 'actionsStandard' : ["reference","zoomin","zoomout","zoomarea","zoomfull","pagewidth","back","fwd","page","bird","SEP","help","reset","options"], |
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189 'actionsSpecial' : ["mark","delmark","hmir","vmir","rot","brgt","cont","rgb","quality","size","calibrationx","scale","SEP","options"], |
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190 'actionsCustom' : [], |
| 616 | 191 // is birdView shown? |
| 192 'isBirdDivVisible' : false, | |
| 615 | 193 // dimensions of bird's eye window |
| 639 | 194 'birdDivOptions' : {'dw' : 200, 'dh' : 200}, |
| 616 | 195 // is the "about" window shown? |
| 196 'isAboutDivVisible' : false | |
| 197 | |
| 610 | 198 }; |
| 605 | 199 |
| 608 | 200 // affine geometry classes |
| 201 var geom = dlGeometry(); | |
| 604 | 202 |
| 643 | 203 var MAX_ZOOMAREA = geom.rectangle(0, 0, 1, 1); |
| 204 | |
| 604 | 205 var methods = { |
| 608 | 206 // digilib initialization |
| 604 | 207 init : function(options) { |
| 608 | 208 // settings for this digilib instance are merged from defaults and options |
| 607 | 209 var settings = $.extend({}, defaults, options); |
| 636 | 210 var isFullscreen = settings.interactionMode === 'fullscreen'; |
| 211 var queryParams = {}; | |
| 607 | 212 if (isFullscreen) { |
| 213 queryParams = parseQueryParams(); | |
| 636 | 214 } |
| 604 | 215 return this.each(function() { |
| 605 | 216 var $elem = $(this); |
| 217 var data = $elem.data('digilib'); | |
| 607 | 218 var elemSettings; |
| 608 | 219 // if the plugin hasn't been initialized yet |
| 604 | 220 if (!data) { |
| 605 | 221 // merge query parameters |
| 607 | 222 if (isFullscreen) { |
| 223 elemSettings = $.extend({}, settings, queryParams); | |
| 224 } else { | |
| 225 elemSettings = $.extend({}, settings, parseImgParams($elem)); | |
| 634 | 226 } |
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227 // store $(this) element in the settings |
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228 elemSettings.digilibRoot = $elem; |
| 627 | 229 data = { |
| 230 target : $elem, | |
| 636 | 231 settings : elemSettings, |
| 232 queryParams : queryParams | |
| 627 | 233 }; |
| 605 | 234 // store in data element |
| 627 | 235 $elem.data('digilib', data); |
| 604 | 236 } |
| 633 | 237 unpackParams(data); |
| 608 | 238 // create HTML structure |
| 627 | 239 setupScalerDiv(data); |
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240 setupButtons(data, 'actionsStandard'); |
| 639 | 241 // bird's eye view creation |
| 242 if (settings.isBirdDivVisible) { | |
| 641 | 243 setupBirdDiv(data); |
| 639 | 244 } |
| 627 | 245 // about window creation - TODO: could be deferred? restrict to only one item? |
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246 setupAboutDiv(data); |
| 604 | 247 }); |
| 248 }, | |
| 608 | 249 |
| 250 // clean up digilib | |
| 604 | 251 destroy : function() { |
| 252 return this.each(function(){ | |
| 636 | 253 var $elem = $(this); |
| 254 var data = $elem.data('digilib'); | |
| 604 | 255 // Namespacing FTW |
| 605 | 256 $(window).unbind('.digilib'); // unbinds all digilibs(?) |
| 604 | 257 data.digilib.remove(); |
| 636 | 258 $elem.removeData('digilib'); |
| 604 | 259 }); |
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260 }, |
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261 |
| 635 | 262 // show or hide the 'about' window |
| 263 showAboutDiv : function(show) { | |
| 636 | 264 var $elem = $(this); |
| 265 var data = $elem.data('digilib'); | |
| 635 | 266 data.settings.isAboutDivVisible = showDiv(data.settings.isAboutDivVisible, data.$aboutDiv, show); |
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267 }, |
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268 |
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269 // event handler: toggles the visibility of the bird's eye window |
| 635 | 270 showBirdDiv : function (show) { |
| 636 | 271 var $elem = $(this); |
| 272 var data = $elem.data('digilib'); | |
| 638 | 273 if (data.$birdDiv == null) { |
| 274 // no bird div -> create | |
| 275 setupBirdDiv(data); | |
| 276 } | |
| 635 | 277 data.settings.isBirdDivVisible = showDiv(data.settings.isBirdDivVisible, data.$birdDiv, show); |
| 623 | 278 }, |
| 279 | |
| 280 // goto given page nr (+/-: relative) | |
| 636 | 281 gotoPage : function (pageNr) { |
| 643 | 282 var $elem = $(this); |
| 636 | 283 var data = $elem.data('digilib'); |
| 284 var settings = data.settings; | |
| 623 | 285 var oldpn = settings.pn; |
| 624 | 286 var pn = setNumValue(settings, "pn", pageNr); |
| 287 if (pn == null) return false; // nothing happened | |
| 623 | 288 if (pn < 1) { |
| 289 alert("no such page (page number too low)"); | |
| 290 settings.pn = oldpn; | |
| 291 return false; | |
| 634 | 292 } |
| 623 | 293 if (settings.pt) { |
| 294 if (pn > settings.pt) { | |
| 295 alert("no such page (page number too high)"); | |
| 296 settings.pn = oldpn; | |
| 297 return false; | |
| 298 } | |
| 634 | 299 } |
| 643 | 300 // add pn to param list and reset mk and others(?) |
| 301 data.marks = []; | |
| 302 data.zoomArea = MAX_ZOOMAREA; | |
| 636 | 303 // then reload |
| 643 | 304 redisplay(data, ['pn']); |
| 305 }, | |
| 306 | |
| 307 // zoom by a given factor | |
| 308 zoomBy : function (factor) { | |
| 309 var $elem = $(this); | |
| 310 var data = $elem.data('digilib'); | |
| 311 zoomBy(data, factor); | |
| 604 | 312 } |
| 605 | 313 }; |
| 604 | 314 |
| 623 | 315 // sets a key to a value (relative values with +/- if relative=true) |
| 316 var setNumValue = function(settings, key, value) { | |
| 641 | 317 if (isNumber(value)) return settings[key] = value; |
| 623 | 318 var sign = value.substring(0,1); |
| 319 if (sign === '+' || sign === '-') { | |
| 637 | 320 if (settings[key] == null) { |
| 321 // this doesn't make much sense but still... | |
| 322 settings[key] = 0; | |
| 323 } | |
| 324 settings[key] = parseFloat(settings[key]) + parseFloat(value); | |
| 623 | 325 } else { |
| 326 settings[key] = value; | |
| 637 | 327 } |
| 623 | 328 return settings[key]; |
| 637 | 329 }; |
| 623 | 330 |
| 608 | 331 // returns parameters from page url |
| 607 | 332 var parseQueryParams = function() { |
| 636 | 333 return parseQueryString(window.location.search.slice(1)); |
| 334 }; | |
| 607 | 335 |
| 636 | 336 // returns parameters from embedded img-element |
| 607 | 337 var parseImgParams = function($elem) { |
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338 var src = $elem.find('img').first().attr('src'); |
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339 if (!src) { |
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340 return null; |
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341 } |
| 607 | 342 var pos = src.indexOf('?'); |
| 343 var query = (pos < 0) ? '' : src.substring(pos + 1); | |
| 344 var scalerUrl = src.substring(0, pos); | |
| 627 | 345 var params = parseQueryString(query); |
| 346 params.scalerBaseUrl = scalerUrl; | |
| 347 return params; | |
| 636 | 348 }; |
| 607 | 349 |
| 608 | 350 // parses query parameter string into parameter object |
| 607 | 351 var parseQueryString = function(query) { |
| 352 var pairs = query.split("&"); | |
| 627 | 353 var params = {}; |
| 636 | 354 //var keys = []; |
| 607 | 355 for (var i = 0; i < pairs.length; i++) { |
| 356 var pair = pairs[i].split("="); | |
| 357 if (pair.length === 2) { | |
| 627 | 358 params[pair[0]] = pair[1]; |
| 636 | 359 //keys.push(pair[0]); |
| 634 | 360 } |
| 636 | 361 } |
| 627 | 362 return params; |
| 636 | 363 }; |
| 604 | 364 |
| 643 | 365 // returns a query string from key names from a parameter hash (ignoring if the same value is in defaults) |
| 366 var getParamString = function (settings, keys, defaults) { | |
| 615 | 367 var paramString = ''; |
| 368 var latter = false; | |
| 369 for (i = 0; i < keys.length; ++i) { | |
| 370 var key = keys[i]; | |
| 643 | 371 if ((settings[key] != null) && ((defaults == null) || (settings[key] !== defaults[key]))) { |
| 615 | 372 // first param gets no '&' |
| 373 paramString += latter ? '&' : ''; | |
| 374 latter = true; | |
| 375 // add parm=val | |
| 376 paramString += key + '=' + settings[key]; | |
| 643 | 377 } |
| 615 | 378 } |
| 379 return paramString; | |
| 631 | 380 }; |
| 381 | |
| 636 | 382 // returns URL and query string for Scaler |
| 383 var getScalerUrl = function (data) { | |
| 384 var settings = data.settings; | |
| 385 var keys = settings.scalerParamNames; | |
| 643 | 386 var queryString = getParamString(settings, keys, defaults); |
| 636 | 387 var url = settings.scalerBaseUrl + '?' + queryString; |
| 388 return url; | |
| 389 }; | |
| 390 | |
| 391 // returns URL and query string for current digilib | |
| 643 | 392 var getDigilibUrl = function (data, changedParams) { |
| 393 packParams(data); | |
| 636 | 394 var settings = data.settings; |
| 643 | 395 var queryParams = data.queryParams; |
| 396 // add changedParams | |
| 397 if (changedParams != null) { | |
| 398 for (var i=0; i < changedParams.length; ++i) { | |
| 399 var k = changedParams[i]; | |
| 400 if (queryParams[k] == null) { | |
| 401 // add param (value doesn't matter) | |
| 402 queryParams[k] = k; | |
| 403 } | |
| 404 } | |
| 405 } | |
| 636 | 406 // make list from queryParams keys |
| 407 var keys = []; | |
| 408 for (var k in data.queryParams) { | |
| 409 keys.push(k); | |
| 410 } | |
| 643 | 411 var queryString = getParamString(settings, keys, defaults); |
| 636 | 412 var url = window.location.toString(); |
| 413 var pos = url.indexOf('?'); | |
| 414 var baseUrl = url.substring(0, pos); | |
| 415 var newurl = baseUrl + '?' + queryString; | |
| 416 return newurl; | |
| 417 }; | |
| 418 | |
| 631 | 419 // processes some parameters into objects and stuff |
| 420 var unpackParams = function (data) { | |
| 421 var settings = data.settings; | |
| 636 | 422 // zoom area |
| 631 | 423 var zoomArea = geom.rectangle(settings.wx, settings.wy, settings.ww, settings.wh); |
| 643 | 424 data.zoomArea = zoomArea; |
| 636 | 425 // marks |
| 631 | 426 var marks = []; |
| 633 | 427 var mk = settings.mk || ''; |
| 428 if (mk.indexOf(";") >= 0) { | |
| 429 var pa = mk.split(";"); // old format with ";" | |
| 631 | 430 } else { |
| 633 | 431 var pa = mk.split(","); // new format |
| 631 | 432 } |
| 433 for (var i = 0; i < pa.length ; i++) { | |
| 434 var pos = pa[i].split("/"); | |
| 633 | 435 if (pos.length > 1) { |
| 436 marks.push(geom.position(pos[0], pos[1])); | |
| 437 } | |
| 631 | 438 } |
| 643 | 439 data.marks = marks; |
| 631 | 440 }; |
| 441 | |
| 442 // put objects back into parameters | |
| 443 var packParams = function (data) { | |
| 444 var settings = data.settings; | |
| 636 | 445 // zoom area |
| 643 | 446 if (data.zoomArea) { |
| 447 settings.wx = data.zoomArea.x; | |
| 448 settings.wy = data.zoomArea.y; | |
| 449 settings.ww = data.zoomArea.width; | |
| 450 settings.wh = data.zoomArea.height; | |
| 631 | 451 } |
| 636 | 452 // marks |
| 643 | 453 if (data.marks) { |
| 631 | 454 var ma = []; |
| 643 | 455 for (var i = 0; i < data.marks.length; i++) { |
| 456 ma.push(cropFloat(data.marks[i].x) + "/" + cropFloat(data.marks[i].y)); | |
| 631 | 457 } |
| 458 settings.mk = ma.join(","); | |
| 459 } | |
| 460 }; | |
| 461 | |
| 609 | 462 // returns maximum size for scaler img in fullscreen mode |
| 463 var getFullscreenImgSize = function($elem) { | |
| 464 var winH = $(window).height(); | |
| 465 var winW = $(window).width(); | |
| 466 // TODO: account for borders? | |
| 467 return geom.size(winW, winH); | |
| 608 | 468 }; |
| 469 | |
| 622 | 470 // (re)load the img from a new scaler URL |
| 643 | 471 var redisplay = function (data, changedParams) { |
| 636 | 472 var settings = data.settings; |
| 473 if (settings.interactionMode === 'fullscreen') { | |
| 474 // update location.href (browser URL) in fullscreen mode | |
| 643 | 475 var url = getDigilibUrl(data, changedParams); |
| 636 | 476 var history = window.history; |
| 477 if (typeof(history.pushState) === 'function') { | |
| 478 console.debug("we could modify history, but we don't..."); | |
| 479 } | |
| 480 window.location = url; | |
| 481 } else { | |
| 482 // embedded mode -- just change img src | |
| 483 var url = getScalerUrl(data); | |
| 484 data.$img.attr('src', url); | |
| 485 } | |
| 622 | 486 }; |
| 487 | |
| 608 | 488 // creates HTML structure for digilib in elem |
| 627 | 489 var setupScalerDiv = function (data) { |
| 490 var settings = data.settings; | |
| 491 var $elem = data.target; | |
| 623 | 492 var $img; |
| 608 | 493 if (settings.interactionMode === 'fullscreen') { |
| 609 | 494 // fullscreen |
| 495 var imgSize = getFullscreenImgSize($elem); | |
| 496 settings.dw = imgSize.width; | |
| 497 settings.dh = imgSize.height; | |
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498 $img = $('<img/>'); |
| 636 | 499 var scalerUrl = getScalerUrl(data); |
| 500 $img.attr('src', scalerUrl); | |
| 609 | 501 } else { |
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502 // embedded mode -- try to keep img tag |
| 623 | 503 $img = $elem.find('img'); |
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504 if ($img.length > 0) { |
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505 console.debug("img detach:",$img); |
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506 $img.detach(); |
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507 } else { |
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508 $img = $('<img/>'); |
| 636 | 509 var scalerUrl = getScalerUrl(data); |
| 510 $img.attr('src', scalerUrl); | |
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511 } |
| 608 | 512 } |
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513 // create new html |
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514 $elem.empty(); // TODO: should we keep stuff for customization? |
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515 var $scaler = $('<div class="scaler"/>'); |
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516 $elem.append($scaler); |
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517 $scaler.append($img); |
| 622 | 518 $img.addClass('pic'); |
| 636 | 519 data.$img = $img; |
| 520 $img.load(scalerImgLoadedHandler(data)); | |
| 608 | 521 }; |
| 615 | 522 |
| 610 | 523 // creates HTML structure for buttons in elem |
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524 var setupButtons = function (data, actionGroup) { |
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525 var $elem = data.target; |
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526 var settings = data.settings; |
| 610 | 527 if (settings.interactionMode === 'fullscreen') { |
| 528 // fullscreen -- create new | |
| 612 | 529 var $buttonsDiv = $('<div class="buttons"></div>'); |
| 530 $elem.append($buttonsDiv); | |
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531 var actionNames = settings[actionGroup]; |
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532 for (var i = 0; i < actionNames.length; i++) { |
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533 var actionName = actionNames[i]; |
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534 var actionSettings = settings.actions[actionName]; |
| 612 | 535 // construct the button html |
| 536 var $button = $('<div class="button"></div>'); | |
| 537 var $a = $('<a/>'); | |
| 614 | 538 var $img = $('<img class="button"/>'); |
| 612 | 539 $buttonsDiv.append($button); |
| 540 $button.append($a); | |
| 541 $a.append($img); | |
| 542 // add attributes and bindings | |
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543 $button.attr('title', actionSettings.tooltip); |
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544 $button.addClass('button-' + actionName); |
| 635 | 545 // create handler for the buttons |
| 546 $a.bind('click', (function () { | |
| 547 // we create a new closure to capture the value of method | |
| 548 var method = actionSettings.onclick; | |
| 619 | 549 if ($.isArray(method)) { |
| 635 | 550 // the handler function calls digilib with method and parameters |
| 551 return function () { | |
| 552 console.debug('click method=', method); | |
| 553 $elem.digilib.apply($elem, method); | |
| 619 | 554 }; |
| 635 | 555 } else { |
| 556 // the handler function calls digilib with method | |
| 557 return function () { | |
| 558 console.debug('click method=', method); | |
| 559 $elem.digilib(method); | |
| 560 }; | |
| 561 } | |
| 562 })()); | |
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563 $img.attr('src', settings.buttonsImagePath + actionSettings.img); |
| 637 | 564 } |
| 611 | 565 } |
| 612 | 566 return $buttonsDiv; |
| 610 | 567 }; |
| 615 | 568 |
| 569 // creates HTML structure for the bird's eye view in elem | |
| 638 | 570 var setupBirdDiv = function (data) { |
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571 var $elem = data.target; |
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572 var settings = data.settings; |
| 615 | 573 // use only the relevant parameters |
| 574 var keys = ['fn','pn','dw','dh']; | |
| 639 | 575 var birdSettings = $.extend({}, settings, settings.birdDivOptions); |
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576 var birdUrl = settings.scalerBaseUrl + '?' + getParamString(birdSettings, keys); |
| 615 | 577 // the bird's eye div |
| 625 | 578 var $birdviewDiv = $('<div class="birdview" style="display:none"/>'); |
| 615 | 579 // the detail indicator frame |
| 580 var $birdzoomDiv = $('<div class="birdzoom"/>'); | |
| 581 // the small image | |
| 582 var $birdImg = $('<img class="birdimg"/>'); | |
| 583 $elem.append($birdviewDiv); | |
| 584 $birdviewDiv.append($birdzoomDiv); | |
| 585 $birdviewDiv.append($birdImg); | |
| 586 $birdImg.attr('src', birdUrl); | |
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587 if (data.settings.isBirdDivVisible) { |
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588 $birdviewDiv.fadeIn(); |
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589 } |
| 635 | 590 data.$birdDiv = $birdviewDiv; |
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591 }; |
| 615 | 592 |
| 625 | 593 // creates HTML structure for the about view in elem |
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594 var setupAboutDiv = function (data) { |
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595 var $elem = data.target; |
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596 var settings = data.settings; |
| 625 | 597 var $aboutDiv = $('<div class="about" style="display:none"/>'); |
| 616 | 598 var $header = $('<p>Digilib Graphic Viewer</p>'); |
| 599 var $link = $('<a/>'); | |
| 600 var $logo = $('<img class="logo" title="digilib"/>'); | |
| 601 var $content = $('<p/>'); | |
| 602 $elem.append($aboutDiv); | |
| 603 $aboutDiv.append($header); | |
| 604 $aboutDiv.append($link); | |
| 605 $aboutDiv.append($content); | |
| 606 $link.append($logo); | |
| 607 $logo.attr('src', settings.logoUrl); | |
| 635 | 608 $link.attr('href', settings.homeUrl); |
| 616 | 609 $content.text('Version: ' + settings.version); |
| 635 | 610 // click hides |
| 611 $aboutDiv.bind('click', function () { showDiv(settings.isAboutDivVisible, $aboutDiv, 0); }); | |
| 612 data.$aboutDiv = $aboutDiv; | |
| 634 | 613 }; |
| 614 | |
| 635 | 615 // shows some window e.g. 'about' (toggle visibility if show is null) |
| 616 var showDiv = function (isVisible, $div, show) { | |
| 617 if (typeof(show) !== 'number') { | |
| 618 // toggle visibility | |
| 619 isVisible = !isVisible; | |
| 620 } else { | |
| 621 // set visibility | |
| 622 isVisible = show; | |
| 623 } | |
| 624 if (isVisible) { | |
| 625 $div.fadeIn(); | |
| 626 } else { | |
| 627 $div.fadeOut(); | |
| 628 } | |
| 629 return isVisible; | |
| 634 | 630 }; |
| 616 | 631 |
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632 // returns function for load event of scaler img |
| 636 | 633 var scalerImgLoadedHandler = function (data) { |
| 627 | 634 var settings = data.settings; |
| 635 var $elem = data.target; | |
| 636 | 636 var $img = data.$img; |
| 627 | 637 |
| 633 | 638 return function () { |
| 627 | 639 console.debug("img loaded! this=", this, " data=", data); |
| 643 | 640 var area = data.zoomArea; |
| 627 | 641 // create Transform from current area and picsize |
| 642 var picpos = $img.offset(); | |
| 643 var picrect = geom.rectangle(picpos.left, picpos.top, $img.width(), $img.height()); | |
| 644 var trafo = geom.transform(); | |
| 645 // subtract area offset and size | |
| 646 trafo.concat(trafo.getTranslation(geom.position(area.x, area.y))); | |
| 647 trafo.concat(trafo.getScale(geom.size(1/area.width, 1/area.height))); | |
| 648 // scale to screen size | |
| 649 trafo.concat(trafo.getScale(picrect)); | |
| 650 trafo.concat(trafo.getTranslation(picrect)); | |
| 651 data.imgTrafo = trafo; | |
| 652 // display marks | |
| 633 | 653 renderMarks(data); |
| 627 | 654 //digilib.showArrows(); // show arrow overlays for zoom navigation |
| 641 | 655 // done -- hide about div --- |
| 656 // --- why? This only leads to suprise effects when displayed programmatically | |
| 657 // settings.isAboutDivVisible = showDiv(null, data.$aboutDiv, 0); | |
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658 }; |
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659 }; |
| 633 | 660 |
| 661 // place marks on the image | |
| 662 var renderMarks = function (data) { | |
| 663 var $elem = data.target; | |
| 643 | 664 var marks = data.marks; |
| 633 | 665 for (var i = 0; i < marks.length; i++) { |
| 666 var mark = marks[i]; | |
| 643 | 667 if (data.zoomArea.containsPosition(mark)) { |
| 633 | 668 var mpos = data.imgTrafo.transform(mark); |
| 669 // create mark | |
| 670 var html = '<div class="mark">'+(i+1)+'</div>'; | |
| 671 var $mark = $(html); | |
| 672 $elem.append($mark); | |
| 673 $mark.offset({ left : mpos.x, top : mpos.y}); | |
| 674 } | |
| 675 } | |
| 676 }; | |
| 631 | 677 |
| 643 | 678 var zoomBy = function(data, factor) { |
| 679 // zooms by the given factor | |
| 680 var area = data.zoomArea; | |
| 681 var newarea = area.copy(); | |
| 682 // scale | |
| 683 newarea.width /= factor; | |
| 684 newarea.height /= factor; | |
| 685 // and recenter | |
| 686 newarea.x -= 0.5 * (newarea.width - area.width); | |
| 687 newarea.y -= 0.5 * (newarea.height - area.height); | |
| 688 newarea = MAX_ZOOMAREA.fit(newarea); | |
| 689 data.zoomArea = newarea; | |
| 690 redisplay(data, ['wx', 'wy', 'ww', 'wh']); | |
| 691 }; | |
| 692 | |
| 641 | 693 // auxiliary function (from Douglas Crockford, A.10) |
| 694 var isNumber = function isNumber(value) { | |
| 695 return typeof value === 'number' && isFinite(value); | |
| 696 }; | |
| 697 | |
| 631 | 698 // auxiliary function to crop senseless precision |
| 699 var cropFloat = function (x) { | |
| 637 | 700 return parseInt(10000 * x, 10) / 10000; |
| 631 | 701 }; |
| 636 | 702 |
| 605 | 703 // hook plugin into jquery |
| 704 $.fn.digilib = function(method) { | |
| 705 if (methods[method]) { | |
| 634 | 706 // call method on this with the remaining arguments |
| 605 | 707 return methods[method].apply(this, Array.prototype.slice.call(arguments, 1)); |
| 708 } else if (typeof(method) === 'object' || !method) { | |
| 634 | 709 // call init on this |
| 605 | 710 return methods.init.apply(this, arguments); |
| 711 } else { | |
| 634 | 712 $.error( 'Method ' + method + ' does not exist on jQuery.digilib' ); |
| 605 | 713 } |
| 714 }; | |
| 604 | 715 |
| 716 })(jQuery); |