Mercurial > hg > digilib
annotate client/digitallibrary/jquery/jquery.digilib.js @ 649:e328273b7ef4 jquery
first try at birdview indicator
| author | hertzhaft |
|---|---|
| date | Fri, 21 Jan 2011 00:34:15 +0100 |
| parents | 8f76bd79648e a2aadf44a454 |
| children | 2d85d820501d |
| rev | line source |
|---|---|
| 597 | 1 /* |
| 2 * digilib jQuery plugin | |
| 3 * | |
| 4 */ | |
| 648 | 5 |
| 629 | 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 } | |
| 597 | 14 |
| 15 (function($) { | |
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16 var buttons = { |
| 603 | 17 reference : { |
| 18 onclick : "javascript:getRefWin()", | |
| 19 tooltip : "get a reference URL", | |
| 20 img : "reference.png" | |
| 21 }, | |
| 22 zoomin : { | |
| 636 | 23 onclick : ["zoomBy", 1.4], |
| 603 | 24 tooltip : "zoom in", |
| 25 img : "zoom-in.png" | |
| 26 }, | |
| 27 zoomout : { | |
| 636 | 28 onclick : ["zoomBy", 0.7], |
| 603 | 29 tooltip : "zoom out", |
| 30 img : "zoom-out.png" | |
| 31 }, | |
| 32 zoomarea : { | |
| 647 | 33 onclick : "zoomArea", |
| 603 | 34 tooltip : "zoom area", |
| 35 img : "zoom-area.png" | |
| 36 }, | |
| 37 zoomfull : { | |
| 643 | 38 onclick : "zoomFull", |
| 603 | 39 tooltip : "view the whole image", |
| 40 img : "zoom-full.png" | |
| 41 }, | |
| 42 pagewidth : { | |
| 643 | 43 onclick : ["zoomFull", "width"], |
| 603 | 44 tooltip : "page width", |
| 45 img : "pagewidth.png" | |
| 46 }, | |
| 47 back : { | |
| 616 | 48 onclick : ["gotoPage", "-1"], |
| 603 | 49 tooltip : "goto previous image", |
| 50 img : "back.png" | |
| 51 }, | |
| 52 fwd : { | |
| 616 | 53 onclick : ["gotoPage", "+1"], |
| 603 | 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 : { | |
| 628 | 63 onclick : "showBirdDiv", |
| 603 | 64 tooltip : "show bird's eye view", |
| 65 img : "birds-eye.png" | |
| 66 }, | |
| 67 help : { | |
| 628 | 68 onclick : "showAboutDiv", |
| 603 | 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 : { | |
| 640 | 78 onclick : "setMark", |
| 603 | 79 tooltip : "set a mark", |
| 80 img : "mark.png" | |
| 81 }, | |
| 82 delmark : { | |
| 643 | 83 onclick : "removeMark", |
| 603 | 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 |
| 598 | 147 var defaults = { |
| 609 | 148 // version of this script |
| 628 | 149 'version' : 'jquery.digilib.js 0.9', |
| 609 | 150 // logo url |
| 151 'logoUrl' : '../img/digilib-logo-text1.png', | |
| 628 | 152 // homepage url (behind logo) |
| 153 'homeUrl' : 'http://digilib.berlios.de', | |
| 603 | 154 // base URL to Scaler servlet |
| 645 | 155 'scalerBaseUrl' : null, |
| 603 | 156 // list of Scaler parameters |
| 620 | 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 | |
| 636 | 160 'pn' : 1, |
| 620 | 161 'ww' : 1.0, |
| 162 'wh' : 1.0, | |
| 163 'wx' : 0.0, | |
| 164 'wy' : 0.0, | |
| 165 'ws' : 1.0, | |
| 636 | 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 |
| 643 | 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 |
| 636 | 178 'mk' : '', |
| 643 | 179 'clop' : '', |
| 636 | 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 | |
| 603 | 183 'interactionMode' : 'fullscreen', |
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184 // buttons |
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185 'buttons' : buttons, |
| 605 | 186 // path to button images (must end with a slash) |
| 187 'buttonsImagePath' : '../greyskin/', | |
| 645 | 188 // button groups |
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189 //'buttonsStandard' : ["reference","zoomin","zoomout","zoomarea","zoomfull","pagewidth","back","fwd","page","bird","SEP","help","reset","options"], |
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190 'buttonsStandard' : ["reference","zoomin","zoomout","zoomarea","zoomfull","pagewidth","mark","delmark","back","fwd","page","bird","SEP","help","reset","options"], |
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191 'buttonsSpecial' : ["mark","delmark","hmir","vmir","rot","brgt","cont","rgb","quality","size","calibrationx","scale","SEP","options"], |
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192 'buttonsCustom' : [], |
| 609 | 193 // is birdView shown? |
| 194 'isBirdDivVisible' : false, | |
| 608 | 195 // dimensions of bird's eye window |
| 632 | 196 'birdDivOptions' : {'dw' : 200, 'dh' : 200}, |
| 609 | 197 // is the "about" window shown? |
| 198 'isAboutDivVisible' : false | |
| 199 | |
| 603 | 200 }; |
| 648 | 201 |
| 601 | 202 // affine geometry classes |
| 203 var geom = dlGeometry(); | |
| 648 | 204 |
| 636 | 205 var MAX_ZOOMAREA = geom.rectangle(0, 0, 1, 1); |
| 648 | 206 |
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207 var actions = { |
| 647 | 208 // init: digilib initialization |
| 597 | 209 init : function(options) { |
| 601 | 210 // settings for this digilib instance are merged from defaults and options |
| 600 | 211 var settings = $.extend({}, defaults, options); |
| 629 | 212 var isFullscreen = settings.interactionMode === 'fullscreen'; |
| 213 var queryParams = {}; | |
| 600 | 214 if (isFullscreen) { |
| 215 queryParams = parseQueryParams(); | |
| 645 | 216 // check scalerBaseUrl |
| 217 if (settings.scalerBaseUrl == null) { | |
| 218 // try the host this came from | |
| 219 var h = window.location.host; | |
| 220 if (window.location.host) { | |
| 221 var url = window.location.href; | |
| 222 // assume the page lives in [webapp]/jquery/ | |
| 223 var pos = url.indexOf('jquery/'); | |
| 224 if (pos > 0) { | |
| 225 settings.scalerBaseUrl = url.substring(0, pos) + 'servlet/Scaler'; | |
| 226 } | |
| 227 } | |
| 228 } | |
| 629 | 229 } |
| 597 | 230 return this.each(function() { |
| 598 | 231 var $elem = $(this); |
| 232 var data = $elem.data('digilib'); | |
| 600 | 233 var elemSettings; |
| 601 | 234 // if the plugin hasn't been initialized yet |
| 597 | 235 if (!data) { |
| 598 | 236 // merge query parameters |
| 600 | 237 if (isFullscreen) { |
| 238 elemSettings = $.extend({}, settings, queryParams); | |
| 239 } else { | |
| 240 elemSettings = $.extend({}, settings, parseImgParams($elem)); | |
| 627 | 241 } |
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242 // store $(this) element in the settings |
| 620 | 243 data = { |
| 640 | 244 $elem : $elem, |
| 629 | 245 settings : elemSettings, |
| 246 queryParams : queryParams | |
| 620 | 247 }; |
| 598 | 248 // store in data element |
| 620 | 249 $elem.data('digilib', data); |
| 597 | 250 } |
| 626 | 251 unpackParams(data); |
| 601 | 252 // create HTML structure |
| 620 | 253 setupScalerDiv(data); |
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254 setupButtons(data, 'buttonsStandard'); |
| 632 | 255 // bird's eye view creation |
| 256 if (settings.isBirdDivVisible) { | |
| 634 | 257 setupBirdDiv(data); |
| 632 | 258 } |
| 620 | 259 // about window creation - TODO: could be deferred? restrict to only one item? |
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260 setupAboutDiv(data); |
| 597 | 261 }); |
| 262 }, | |
| 601 | 263 |
| 647 | 264 // destroy: clean up digilib |
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265 destroy : function(data) { |
| 597 | 266 return this.each(function(){ |
| 629 | 267 var $elem = $(this); |
| 647 | 268 $(window).unbind('.digilib'); // unbind all digilibs(?) |
| 597 | 269 data.digilib.remove(); |
| 629 | 270 $elem.removeData('digilib'); |
| 597 | 271 }); |
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272 }, |
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273 |
| 628 | 274 // show or hide the 'about' window |
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275 showAboutDiv : function(data, show) { |
| 628 | 276 data.settings.isAboutDivVisible = showDiv(data.settings.isAboutDivVisible, data.$aboutDiv, show); |
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277 }, |
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278 |
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279 // event handler: toggles the visibility of the bird's eye window |
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280 showBirdDiv : function (data, show) { |
| 631 | 281 if (data.$birdDiv == null) { |
| 282 // no bird div -> create | |
| 283 setupBirdDiv(data); | |
| 284 } | |
| 648 | 285 // TODO: keep bird view visible after reload (parameter, cookie?) |
| 628 | 286 data.settings.isBirdDivVisible = showDiv(data.settings.isBirdDivVisible, data.$birdDiv, show); |
| 648 | 287 showBirdIndicator(data); |
| 616 | 288 }, |
| 648 | 289 |
| 616 | 290 // goto given page nr (+/-: relative) |
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291 gotoPage : function (data, pageNr) { |
| 629 | 292 var settings = data.settings; |
| 616 | 293 var oldpn = settings.pn; |
| 617 | 294 var pn = setNumValue(settings, "pn", pageNr); |
| 295 if (pn == null) return false; // nothing happened | |
| 616 | 296 if (pn < 1) { |
| 297 alert("no such page (page number too low)"); | |
| 298 settings.pn = oldpn; | |
| 299 return false; | |
| 627 | 300 } |
| 616 | 301 if (settings.pt) { |
| 302 if (pn > settings.pt) { | |
| 303 alert("no such page (page number too high)"); | |
| 304 settings.pn = oldpn; | |
| 305 return false; | |
| 306 } | |
| 627 | 307 } |
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308 // reset mk and others(?) |
| 636 | 309 data.marks = []; |
| 310 data.zoomArea = MAX_ZOOMAREA; | |
| 629 | 311 // then reload |
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312 redisplay(data); |
| 636 | 313 }, |
| 648 | 314 |
| 636 | 315 // zoom by a given factor |
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316 zoomBy : function (data, factor) { |
| 636 | 317 zoomBy(data, factor); |
| 640 | 318 }, |
| 319 | |
| 647 | 320 // zoom interactively |
| 321 zoomArea : function (data) { | |
| 322 zoomArea(data); | |
| 323 }, | |
| 324 | |
| 640 | 325 // zoom out to full page |
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326 zoomFull : function (data, mode) { |
| 640 | 327 data.zoomArea = MAX_ZOOMAREA; |
| 643 | 328 if (mode === 'width') { |
| 329 data.dlOpts.fitwidth = 1; | |
| 330 delete data.dlOpts.fitheight; | |
| 331 } else if (mode === 'height') { | |
| 332 data.dlOpts.fitheight = 1; | |
| 333 delete data.dlOpts.fitwidth; | |
| 334 } else { | |
| 335 delete data.dlOpts.fitwidth; | |
| 336 delete data.dlOpts.fitheight; | |
| 337 } | |
| 640 | 338 redisplay(data); |
| 339 }, | |
| 340 | |
| 341 // set a mark by clicking (or giving a position) | |
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342 setMark : function (data, mpos) { |
| 640 | 343 if (mpos == null) { |
| 344 // interactive | |
| 345 setMark(data); | |
| 346 } else { | |
| 347 // use position | |
| 348 data.marks.push(pos); | |
| 349 redisplay(data); | |
| 350 } | |
| 643 | 351 }, |
| 352 | |
| 353 // remove the last mark | |
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354 removeMark : function (data) { |
| 643 | 355 data.marks.pop(); |
| 356 redisplay(data); | |
| 597 | 357 } |
| 643 | 358 |
| 598 | 359 }; |
| 597 | 360 |
| 601 | 361 // returns parameters from page url |
| 600 | 362 var parseQueryParams = function() { |
| 629 | 363 return parseQueryString(window.location.search.slice(1)); |
| 364 }; | |
| 648 | 365 |
| 629 | 366 // returns parameters from embedded img-element |
| 600 | 367 var parseImgParams = function($elem) { |
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368 var src = $elem.find('img').first().attr('src'); |
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369 if (!src) { |
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370 return null; |
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371 } |
| 600 | 372 var pos = src.indexOf('?'); |
| 373 var query = (pos < 0) ? '' : src.substring(pos + 1); | |
| 374 var scalerUrl = src.substring(0, pos); | |
| 620 | 375 var params = parseQueryString(query); |
| 376 params.scalerBaseUrl = scalerUrl; | |
| 377 return params; | |
| 629 | 378 }; |
| 600 | 379 |
| 601 | 380 // parses query parameter string into parameter object |
| 600 | 381 var parseQueryString = function(query) { |
| 382 var pairs = query.split("&"); | |
| 620 | 383 var params = {}; |
| 629 | 384 //var keys = []; |
| 600 | 385 for (var i = 0; i < pairs.length; i++) { |
| 386 var pair = pairs[i].split("="); | |
| 387 if (pair.length === 2) { | |
| 620 | 388 params[pair[0]] = pair[1]; |
| 629 | 389 //keys.push(pair[0]); |
| 627 | 390 } |
| 629 | 391 } |
| 620 | 392 return params; |
| 629 | 393 }; |
| 597 | 394 |
| 636 | 395 // returns a query string from key names from a parameter hash (ignoring if the same value is in defaults) |
| 396 var getParamString = function (settings, keys, defaults) { | |
| 608 | 397 var paramString = ''; |
| 643 | 398 var nx = false; |
| 608 | 399 for (i = 0; i < keys.length; ++i) { |
| 400 var key = keys[i]; | |
| 636 | 401 if ((settings[key] != null) && ((defaults == null) || (settings[key] !== defaults[key]))) { |
| 608 | 402 // first param gets no '&' |
| 643 | 403 if (nx) { |
| 404 paramString += '&'; | |
| 405 } else { | |
| 406 nx = true; | |
| 407 } | |
| 608 | 408 // add parm=val |
| 409 paramString += key + '=' + settings[key]; | |
| 636 | 410 } |
| 608 | 411 } |
| 412 return paramString; | |
| 624 | 413 }; |
| 414 | |
| 629 | 415 // returns URL and query string for Scaler |
| 416 var getScalerUrl = function (data) { | |
| 646 | 417 var settings = data.settings; |
| 645 | 418 if (settings.scalerBaseUrl == null) { |
| 419 alert("ERROR: URL of digilib Scaler servlet missing!"); | |
| 420 } | |
| 629 | 421 var keys = settings.scalerParamNames; |
| 636 | 422 var queryString = getParamString(settings, keys, defaults); |
| 629 | 423 var url = settings.scalerBaseUrl + '?' + queryString; |
| 424 return url; | |
| 425 }; | |
| 426 | |
| 427 // returns URL and query string for current digilib | |
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428 var getDigilibUrl = function (data) { |
| 636 | 429 packParams(data); |
| 629 | 430 var settings = data.settings; |
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431 var queryString = getParamString(settings, settings.digilibParamNames, defaults); |
| 629 | 432 var url = window.location.toString(); |
| 433 var pos = url.indexOf('?'); | |
| 434 var baseUrl = url.substring(0, pos); | |
| 435 var newurl = baseUrl + '?' + queryString; | |
| 436 return newurl; | |
| 437 }; | |
| 438 | |
| 648 | 439 // processes some parameters into objects and stuff |
| 624 | 440 var unpackParams = function (data) { |
| 441 var settings = data.settings; | |
| 629 | 442 // zoom area |
| 624 | 443 var zoomArea = geom.rectangle(settings.wx, settings.wy, settings.ww, settings.wh); |
| 636 | 444 data.zoomArea = zoomArea; |
| 629 | 445 // marks |
| 624 | 446 var marks = []; |
| 643 | 447 if (settings.mk) { |
| 448 var mk = settings.mk; | |
| 449 if (mk.indexOf(";") >= 0) { | |
| 450 var pa = mk.split(";"); // old format with ";" | |
| 451 } else { | |
| 452 var pa = mk.split(","); // new format | |
| 453 } | |
| 454 for (var i = 0; i < pa.length ; i++) { | |
| 455 var pos = pa[i].split("/"); | |
| 456 if (pos.length > 1) { | |
| 457 marks.push(geom.position(pos[0], pos[1])); | |
| 458 } | |
| 626 | 459 } |
| 624 | 460 } |
| 636 | 461 data.marks = marks; |
| 643 | 462 // mo (Scaler flags) |
| 463 var flags = {}; | |
| 464 if (settings.mo) { | |
| 465 var pa = settings.mo.split(","); | |
| 466 for (var i = 0; i < pa.length ; i++) { | |
| 467 flags[pa[i]] = pa[i]; | |
| 468 } | |
| 469 } | |
| 470 data.scalerFlags = flags; | |
| 471 // clop (digilib options) | |
| 472 var opts = {}; | |
| 473 if (settings.clop) { | |
| 474 var pa = settings.clop.split(","); | |
| 475 for (var i = 0; i < pa.length ; i++) { | |
| 476 opts[pa[i]] = pa[i]; | |
| 477 } | |
| 478 } | |
| 479 data.dlOpts = opts; | |
| 648 | 480 }; |
| 481 | |
| 624 | 482 // put objects back into parameters |
| 483 var packParams = function (data) { | |
| 484 var settings = data.settings; | |
| 629 | 485 // zoom area |
| 636 | 486 if (data.zoomArea) { |
| 640 | 487 settings.wx = cropFloat(data.zoomArea.x); |
| 488 settings.wy = cropFloat(data.zoomArea.y); | |
| 489 settings.ww = cropFloat(data.zoomArea.width); | |
| 490 settings.wh = cropFloat(data.zoomArea.height); | |
| 624 | 491 } |
| 629 | 492 // marks |
| 636 | 493 if (data.marks) { |
| 643 | 494 settings.mk = ''; |
| 636 | 495 for (var i = 0; i < data.marks.length; i++) { |
| 643 | 496 if (i) { |
| 497 settings.mk += ','; | |
| 498 } | |
| 499 settings.mk += cropFloat(data.marks[i].x).toString() + '/' + cropFloat(data.marks[i].y).toString(); | |
| 624 | 500 } |
| 643 | 501 } |
| 502 // Scaler flags | |
| 503 if (data.scalerFlags) { | |
| 504 var mo = ''; | |
| 505 for (var f in data.scalerFlags) { | |
| 506 if (mo) { | |
| 507 mo += ','; | |
| 508 } | |
| 509 mo += f; | |
| 510 } | |
| 511 settings.mo = mo; | |
| 512 } | |
| 513 // digilib options | |
| 514 if (data.dlOpts) { | |
| 515 var clop = ''; | |
| 516 for (var o in data.dlOpts) { | |
| 517 if (clop) { | |
| 518 clop += ','; | |
| 519 } | |
| 520 clop += o; | |
| 521 } | |
| 522 settings.clop = clop; | |
| 624 | 523 } |
| 524 }; | |
| 648 | 525 |
| 602 | 526 // returns maximum size for scaler img in fullscreen mode |
| 527 var getFullscreenImgSize = function($elem) { | |
| 528 var winH = $(window).height(); | |
| 529 var winW = $(window).width(); | |
| 530 // TODO: account for borders? | |
| 531 return geom.size(winW, winH); | |
| 601 | 532 }; |
| 648 | 533 |
| 615 | 534 // (re)load the img from a new scaler URL |
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535 var redisplay = function (data) { |
| 629 | 536 var settings = data.settings; |
| 537 if (settings.interactionMode === 'fullscreen') { | |
| 538 // update location.href (browser URL) in fullscreen mode | |
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539 var url = getDigilibUrl(data); |
| 629 | 540 var history = window.history; |
| 541 if (typeof(history.pushState) === 'function') { | |
| 542 console.debug("we could modify history, but we don't..."); | |
| 543 } | |
| 544 window.location = url; | |
| 545 } else { | |
| 546 // embedded mode -- just change img src | |
| 547 var url = getScalerUrl(data); | |
| 548 data.$img.attr('src', url); | |
| 549 } | |
| 615 | 550 }; |
| 551 | |
| 601 | 552 // creates HTML structure for digilib in elem |
| 620 | 553 var setupScalerDiv = function (data) { |
| 554 var settings = data.settings; | |
| 640 | 555 var $elem = data.$elem; |
| 616 | 556 var $img; |
| 601 | 557 if (settings.interactionMode === 'fullscreen') { |
| 602 | 558 // fullscreen |
| 559 var imgSize = getFullscreenImgSize($elem); | |
| 643 | 560 // fitwidth/height omits destination height/width |
| 561 if (data.dlOpts['fitheight'] == null) { | |
| 562 settings.dw = imgSize.width; | |
| 563 } | |
| 564 if (data.dlOpts['fitwidth'] == null) { | |
| 565 settings.dh = imgSize.height; | |
| 566 } | |
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567 $img = $('<img/>'); |
| 629 | 568 var scalerUrl = getScalerUrl(data); |
| 569 $img.attr('src', scalerUrl); | |
| 602 | 570 } else { |
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571 // embedded mode -- try to keep img tag |
| 616 | 572 $img = $elem.find('img'); |
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573 if ($img.length > 0) { |
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574 console.debug("img detach:",$img); |
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575 $img.detach(); |
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576 } else { |
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577 $img = $('<img/>'); |
| 629 | 578 var scalerUrl = getScalerUrl(data); |
| 579 $img.attr('src', scalerUrl); | |
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580 } |
| 601 | 581 } |
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582 // create new html |
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583 $elem.empty(); // TODO: should we keep stuff for customization? |
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584 var $scaler = $('<div class="scaler"/>'); |
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585 $elem.append($scaler); |
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586 $scaler.append($img); |
| 615 | 587 $img.addClass('pic'); |
| 642 | 588 data.$scaler = $scaler; |
| 629 | 589 data.$img = $img; |
| 590 $img.load(scalerImgLoadedHandler(data)); | |
| 601 | 591 }; |
| 608 | 592 |
| 603 | 593 // creates HTML structure for buttons in elem |
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594 var setupButtons = function (data, actionGroup) { |
| 640 | 595 var $elem = data.$elem; |
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596 var settings = data.settings; |
| 603 | 597 if (settings.interactionMode === 'fullscreen') { |
| 598 // fullscreen -- create new | |
| 605 | 599 var $buttonsDiv = $('<div class="buttons"></div>'); |
| 600 $elem.append($buttonsDiv); | |
|
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601 var actionNames = settings[actionGroup]; |
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602 for (var i = 0; i < actionNames.length; i++) { |
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603 var actionName = actionNames[i]; |
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604 var buttonSettings = settings.buttons[actionName]; |
| 605 | 605 // construct the button html |
| 606 var $button = $('<div class="button"></div>'); | |
| 607 var $a = $('<a/>'); | |
| 607 | 608 var $img = $('<img class="button"/>'); |
| 605 | 609 $buttonsDiv.append($button); |
| 610 $button.append($a); | |
| 611 $a.append($img); | |
| 612 // add attributes and bindings | |
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613 $button.attr('title', buttonSettings.tooltip); |
|
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614 $button.addClass('button-' + actionName); |
| 628 | 615 // create handler for the buttons |
| 642 | 616 $a.bind('click.digilib', (function () { |
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617 // we create a new closure to capture the value of action |
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618 var action = buttonSettings.onclick; |
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619 if ($.isArray(action)) { |
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620 // the handler function calls digilib with action and parameters |
| 642 | 621 return function (evt) { |
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622 console.debug('click action=', action, ' evt=', evt); |
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623 $elem.digilib.apply($elem, action); |
| 642 | 624 return false; |
| 612 | 625 }; |
| 628 | 626 } else { |
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627 // the handler function calls digilib with action |
| 642 | 628 return function (evt) { |
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629 console.debug('click action=', action, ' evt=', evt); |
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630 $elem.digilib(action); |
| 642 | 631 return false; |
| 628 | 632 }; |
| 633 } | |
| 634 })()); | |
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635 $img.attr('src', settings.buttonsImagePath + buttonSettings.img); |
| 630 | 636 } |
| 604 | 637 } |
| 605 | 638 return $buttonsDiv; |
| 603 | 639 }; |
| 608 | 640 |
| 641 // creates HTML structure for the bird's eye view in elem | |
| 631 | 642 var setupBirdDiv = function (data) { |
| 640 | 643 var $elem = data.$elem; |
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644 var settings = data.settings; |
| 608 | 645 // use only the relevant parameters |
| 646 var keys = ['fn','pn','dw','dh']; | |
| 632 | 647 var birdSettings = $.extend({}, settings, settings.birdDivOptions); |
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648 var birdUrl = settings.scalerBaseUrl + '?' + getParamString(birdSettings, keys); |
| 608 | 649 // the bird's eye div |
| 618 | 650 var $birdviewDiv = $('<div class="birdview" style="display:none"/>'); |
| 608 | 651 // the detail indicator frame |
| 648 | 652 var $birdzoomDiv = $('<div class="birdzoom" style="position: absolute; background-color: transparent;"/>'); |
| 608 | 653 // the small image |
| 654 var $birdImg = $('<img class="birdimg"/>'); | |
| 655 $elem.append($birdviewDiv); | |
| 656 $birdviewDiv.append($birdzoomDiv); | |
| 657 $birdviewDiv.append($birdImg); | |
| 658 $birdImg.attr('src', birdUrl); | |
|
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659 if (data.settings.isBirdDivVisible) { |
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660 $birdviewDiv.fadeIn(); |
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661 } |
| 628 | 662 data.$birdDiv = $birdviewDiv; |
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663 }; |
| 608 | 664 |
| 618 | 665 // creates HTML structure for the about view in elem |
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666 var setupAboutDiv = function (data) { |
| 640 | 667 var $elem = data.$elem; |
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668 var settings = data.settings; |
| 618 | 669 var $aboutDiv = $('<div class="about" style="display:none"/>'); |
| 609 | 670 var $header = $('<p>Digilib Graphic Viewer</p>'); |
| 671 var $link = $('<a/>'); | |
| 672 var $logo = $('<img class="logo" title="digilib"/>'); | |
| 673 var $content = $('<p/>'); | |
| 674 $elem.append($aboutDiv); | |
| 675 $aboutDiv.append($header); | |
| 676 $aboutDiv.append($link); | |
| 677 $aboutDiv.append($content); | |
| 678 $link.append($logo); | |
| 679 $logo.attr('src', settings.logoUrl); | |
| 628 | 680 $link.attr('href', settings.homeUrl); |
| 609 | 681 $content.text('Version: ' + settings.version); |
| 628 | 682 // click hides |
| 642 | 683 $aboutDiv.bind('click.digilib', function () { |
| 639 | 684 settings.isAboutDivVisible = showDiv(settings.isAboutDivVisible, $aboutDiv, 0); |
| 642 | 685 return false; |
| 686 }); | |
| 628 | 687 data.$aboutDiv = $aboutDiv; |
| 627 | 688 }; |
| 689 | |
| 628 | 690 // shows some window e.g. 'about' (toggle visibility if show is null) |
| 691 var showDiv = function (isVisible, $div, show) { | |
| 638 | 692 if (show == null) { |
| 628 | 693 // toggle visibility |
| 694 isVisible = !isVisible; | |
| 695 } else { | |
| 696 // set visibility | |
| 697 isVisible = show; | |
| 698 } | |
| 699 if (isVisible) { | |
| 700 $div.fadeIn(); | |
| 701 } else { | |
| 702 $div.fadeOut(); | |
| 703 } | |
| 704 return isVisible; | |
| 627 | 705 }; |
| 609 | 706 |
| 648 | 707 // shows bird view indicator |
| 708 var showBirdIndicator = function (data) { | |
| 709 if (!data.settings.isBirdDivVisible || isFullArea(data)) return; | |
| 710 // TODO: more conditions: original size, pixel by pixel? | |
| 711 var $birdDiv = data.$birdDiv; | |
| 712 var $birdImg = $birdDiv.find('img.birdimg'); | |
| 713 var pos = $birdImg.offset(); | |
| 714 var birdRect = geom.rectangle(pos.left, pos.top, $birdImg.width(), $birdImg.height()); | |
| 715 var area = data.zoomArea; | |
| 716 // TODO: couldn't we do a trafo here? :-) | |
| 717 var indRect = geom.rectangle( | |
| 718 birdRect.x + birdRect.width * area.x, | |
| 719 birdRect.y + birdRect.height * area.y, | |
| 720 birdRect.width * area.width, | |
| 721 birdRect.height * area.height | |
| 722 ); | |
| 723 var $ind = $birdDiv.find('div.birdzoom'); | |
| 724 // TODO: set the coordinates all in one call? | |
| 725 $ind.width(indRect.width); | |
| 726 $ind.height(indRect.height); | |
| 727 $ind.offset({ left : indRect.x, top : indRect.y }); | |
| 728 // TODO: how to override this style with a CSS stylesheet? | |
| 729 if (!$ind.css('border')) $ind.css('border', '2px solid #ff0000'); | |
| 730 return; | |
| 731 }; | |
| 732 | |
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733 // returns function for load event of scaler img |
| 629 | 734 var scalerImgLoadedHandler = function (data) { |
| 620 | 735 var settings = data.settings; |
| 640 | 736 var $elem = data.$elem; |
| 629 | 737 var $img = data.$img; |
| 648 | 738 |
| 626 | 739 return function () { |
| 620 | 740 console.debug("img loaded! this=", this, " data=", data); |
| 636 | 741 var area = data.zoomArea; |
| 620 | 742 // create Transform from current area and picsize |
| 647 | 743 var picrect = geom.rectangle($img); |
| 620 | 744 var trafo = geom.transform(); |
| 745 // subtract area offset and size | |
| 640 | 746 trafo.concat(trafo.getTranslation(geom.position(- area.x, - area.y))); |
| 620 | 747 trafo.concat(trafo.getScale(geom.size(1/area.width, 1/area.height))); |
| 748 // scale to screen size | |
| 749 trafo.concat(trafo.getScale(picrect)); | |
| 750 trafo.concat(trafo.getTranslation(picrect)); | |
| 751 data.imgTrafo = trafo; | |
| 752 // display marks | |
| 626 | 753 renderMarks(data); |
| 620 | 754 //digilib.showArrows(); // show arrow overlays for zoom navigation |
| 634 | 755 // done -- hide about div --- |
| 756 // --- why? This only leads to suprise effects when displayed programmatically | |
| 757 // settings.isAboutDivVisible = showDiv(null, data.$aboutDiv, 0); | |
| 648 | 758 showBirdIndicator(data); |
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759 }; |
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760 }; |
| 626 | 761 |
| 762 // place marks on the image | |
| 763 var renderMarks = function (data) { | |
| 640 | 764 var $elem = data.$elem; |
| 636 | 765 var marks = data.marks; |
| 642 | 766 // TODO: clear marks first(?) |
| 626 | 767 for (var i = 0; i < marks.length; i++) { |
| 768 var mark = marks[i]; | |
| 636 | 769 if (data.zoomArea.containsPosition(mark)) { |
| 626 | 770 var mpos = data.imgTrafo.transform(mark); |
| 771 // create mark | |
| 772 var html = '<div class="mark">'+(i+1)+'</div>'; | |
| 773 var $mark = $(html); | |
| 774 $elem.append($mark); | |
| 647 | 775 $mark.offset({left : mpos.x, top : mpos.y}); |
| 626 | 776 } |
| 777 } | |
| 778 }; | |
| 648 | 779 |
| 640 | 780 // zooms by the given factor |
| 636 | 781 var zoomBy = function(data, factor) { |
| 782 var area = data.zoomArea; | |
| 783 var newarea = area.copy(); | |
| 784 // scale | |
| 785 newarea.width /= factor; | |
| 786 newarea.height /= factor; | |
| 787 // and recenter | |
| 788 newarea.x -= 0.5 * (newarea.width - area.width); | |
| 789 newarea.y -= 0.5 * (newarea.height - area.height); | |
| 790 newarea = MAX_ZOOMAREA.fit(newarea); | |
| 791 data.zoomArea = newarea; | |
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792 redisplay(data); |
| 636 | 793 }; |
| 794 | |
| 640 | 795 // add a mark where clicked |
| 796 var setMark = function (data) { | |
| 642 | 797 var $scaler = data.$scaler; |
| 640 | 798 console.debug("setmark"); |
| 799 // start event capturing | |
| 642 | 800 $scaler.one('click.digilib', function (evt) { |
| 640 | 801 // event handler adding a new mark |
| 802 console.debug("setmark.click evt=",evt); | |
| 803 var mpos = geom.position(evt.pageX, evt.pageY); | |
| 804 var pos = data.imgTrafo.invtransform(mpos); | |
| 805 data.marks.push(pos); | |
| 806 redisplay(data); | |
| 642 | 807 return false; // do we even get here? |
| 640 | 808 }); |
| 809 }; | |
| 647 | 810 |
| 811 var zoomArea = function(data) { | |
| 812 $elem = data.$elem; | |
| 813 $scaler = data.$scaler; | |
| 814 var pt1, pt2; | |
| 815 var $zoomDiv = $('<div class="zoomrect" style="display:none"/>'); | |
| 816 $elem.append($zoomDiv); | |
| 817 //var overlay = getElement("overlay"); | |
| 818 // use overlay div to avoid <img> mousemove problems | |
| 819 var picRect = geom.rectangle($scaler); | |
| 820 // FIX ME: is there a way to query the border width from CSS info? | |
| 821 // rect.x -= 2; // account for overlay borders | |
| 822 // rect.y -= 2; | |
| 823 //moveElement(overlay, picRect); | |
| 824 //showElement(overlay, true); | |
| 825 // start event capturing | |
| 826 //registerEvent("mousedown", overlay, zoomStart); | |
| 827 //registerEvent("mousedown", this.scalerImg, zoomStart); | |
| 828 | |
| 829 var zoomStart = function (evt) { | |
| 830 pt1 = geom.position(evt); | |
| 831 // setup and show zoom div | |
| 832 //moveElement(zoomdiv, Rectangle(pt1.x, pt1.y, 0, 0)); | |
| 833 $zoomDiv.offset({left : pt1.x, top : pt1.y}); | |
| 834 $zoomDiv.show(); | |
| 835 // register events | |
| 836 $elem.bind("mousemove.digilib", zoomMove); | |
| 837 $elem.bind("mouseup.digilib", zoomEnd); | |
| 838 return false; | |
| 839 }; | |
| 840 | |
| 841 // mouseup handler: end moving | |
| 842 var zoomEnd = function (evt) { | |
| 843 pt2 = geom.position(evt); | |
| 844 // assume a click and continue if the area is too small | |
| 845 var clickRect = geom.rectangle(pt1, pt2); | |
| 846 clickRect.normalize(); | |
| 847 console.debug("clickRect.getArea()=",clickRect.getArea()); | |
| 848 if (clickRect.getArea() <= 5) { | |
| 849 return false; | |
| 850 } | |
| 851 // hide zoom div | |
| 852 $zoomDiv.remove(); | |
| 853 // unregister events | |
| 854 $elem.unbind("mousemove.digilib", zoomMove); | |
| 855 $elem.unbind("mouseup.digilib", zoomEnd); | |
| 856 // clip and transform | |
| 857 clickRect.clipTo(picRect); | |
| 858 var area = data.imgTrafo.invtransform(clickRect); | |
| 859 data.zoomArea = area; | |
| 860 // zoomed is always fit | |
| 861 data.settings.ws = 1; | |
| 862 redisplay(data); | |
| 863 return false; | |
| 864 }; | |
| 865 | |
| 866 // mouse move handler | |
| 867 var zoomMove = function (evt) { | |
| 868 pt2 = geom.position(evt); | |
| 869 var rect = geom.rectangle(pt1, pt2); | |
| 870 rect.normalize(); | |
| 871 rect.clipTo(picRect); | |
| 872 // update zoom div | |
| 873 $zoomDiv.offset({left : rect.x, top : rect.y}); | |
| 874 $zoomDiv.width(rect.width).height(rect.height); | |
| 875 return false; | |
| 876 }; | |
| 877 | |
| 878 // bind start zoom handler | |
| 879 $scaler.one('mousedown.digilib', zoomStart); | |
| 880 }; | |
| 640 | 881 |
| 643 | 882 // sets a key to a value (relative values with +/- if relative=true) |
| 883 var setNumValue = function(settings, key, value) { | |
| 884 if (isNumber(value)) return settings[key] = value; | |
| 885 var sign = value.substring(0,1); | |
| 886 if (sign === '+' || sign === '-') { | |
| 887 if (settings[key] == null) { | |
|
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888 // this isn't perfect but still... |
| 643 | 889 settings[key] = 0; |
| 890 } | |
| 891 settings[key] = parseFloat(settings[key]) + parseFloat(value); | |
| 892 } else { | |
| 893 settings[key] = value; | |
| 894 } | |
| 895 return settings[key]; | |
| 896 }; | |
| 648 | 897 |
| 898 // auxiliary function (from old dllib.js) | |
| 899 isFullArea = function(data) { | |
| 900 var area = data.zoomArea; | |
| 901 return (area.width == 1.0) && (area.height == 1.0); | |
| 902 }; | |
| 903 | |
| 634 | 904 // auxiliary function (from Douglas Crockford, A.10) |
| 905 var isNumber = function isNumber(value) { | |
| 906 return typeof value === 'number' && isFinite(value); | |
| 907 }; | |
| 648 | 908 |
| 624 | 909 // auxiliary function to crop senseless precision |
| 910 var cropFloat = function (x) { | |
| 630 | 911 return parseInt(10000 * x, 10) / 10000; |
| 624 | 912 }; |
| 648 | 913 |
| 598 | 914 // hook plugin into jquery |
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915 $.fn.digilib = function(action) { |
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916 if (actions[action]) { |
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917 // call action on this with the remaining arguments (inserting data as first argument) |
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918 var $elem = $(this); |
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919 var data = $elem.data('digilib'); |
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920 var args = Array.prototype.slice.call(arguments, 1); |
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921 args.unshift(data); |
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922 return actions[action].apply(this, args); |
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923 } else if (typeof(action) === 'object' || !action) { |
| 627 | 924 // call init on this |
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925 return actions.init.apply(this, arguments); |
| 598 | 926 } else { |
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927 $.error( 'action ' + action + ' does not exist on jQuery.digilib' ); |
| 598 | 928 } |
| 929 }; | |
| 597 | 930 |
| 931 })(jQuery); |