Mercurial > hg > digilib
annotate client/digitallibrary/jquery/jquery.digilib.js @ 656:cad479ecb089 jquery
rotate, contrast, and brightness
| author | robcast |
|---|---|
| date | Sun, 23 Jan 2011 00:26:07 +0100 |
| parents | 7694475609ed |
| children | b0c6cc4a0932 |
| 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 : { | |
| 654 | 88 onclick : ["mirror", "h"], |
| 603 | 89 tooltip : "mirror horizontally", |
| 90 img : "mirror-horizontal.png" | |
| 91 }, | |
| 92 vmir : { | |
| 654 | 93 onclick : ["mirror", "v"], |
| 603 | 94 tooltip : "mirror vertically", |
| 95 img : "mirror-vertical.png" | |
| 96 }, | |
| 97 rot : { | |
| 656 | 98 onclick : "rotate", |
| 603 | 99 tooltip : "rotate image", |
| 100 img : "rotate.png" | |
| 101 }, | |
| 102 brgt : { | |
| 656 | 103 onclick : "brightness", |
| 603 | 104 tooltip : "set brightness", |
| 105 img : "brightness.png" | |
| 106 }, | |
| 107 cont : { | |
| 656 | 108 onclick : "contrast", |
| 603 | 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"], |
| 655 | 190 'buttonsStandard' : ["reference","zoomin","zoomout","zoomarea","zoomfull","pagewidth","mark","delmark","hmir","vmir","back","fwd","page","rot","brgt","cont","rgb","quality","size","calibrationx","scale","bird","help","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}, |
| 652 | 197 // style of bird's eye window |
| 198 'birdIndicatorStyle' : {'border' : '2px solid #ff0000' }, | |
| 609 | 199 // is the "about" window shown? |
| 200 'isAboutDivVisible' : false | |
| 201 | |
| 603 | 202 }; |
| 648 | 203 |
| 601 | 204 // affine geometry classes |
| 205 var geom = dlGeometry(); | |
| 648 | 206 |
| 636 | 207 var MAX_ZOOMAREA = geom.rectangle(0, 0, 1, 1); |
| 648 | 208 |
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209 var actions = { |
| 647 | 210 // init: digilib initialization |
| 597 | 211 init : function(options) { |
| 601 | 212 // settings for this digilib instance are merged from defaults and options |
| 600 | 213 var settings = $.extend({}, defaults, options); |
| 629 | 214 var isFullscreen = settings.interactionMode === 'fullscreen'; |
| 215 var queryParams = {}; | |
| 600 | 216 if (isFullscreen) { |
| 217 queryParams = parseQueryParams(); | |
| 645 | 218 // check scalerBaseUrl |
| 219 if (settings.scalerBaseUrl == null) { | |
| 220 // try the host this came from | |
| 221 var h = window.location.host; | |
| 222 if (window.location.host) { | |
| 223 var url = window.location.href; | |
| 224 // assume the page lives in [webapp]/jquery/ | |
| 225 var pos = url.indexOf('jquery/'); | |
| 226 if (pos > 0) { | |
| 227 settings.scalerBaseUrl = url.substring(0, pos) + 'servlet/Scaler'; | |
| 228 } | |
| 229 } | |
| 230 } | |
| 629 | 231 } |
| 597 | 232 return this.each(function() { |
| 598 | 233 var $elem = $(this); |
| 234 var data = $elem.data('digilib'); | |
| 600 | 235 var elemSettings; |
| 601 | 236 // if the plugin hasn't been initialized yet |
| 597 | 237 if (!data) { |
| 598 | 238 // merge query parameters |
| 600 | 239 if (isFullscreen) { |
| 240 elemSettings = $.extend({}, settings, queryParams); | |
| 241 } else { | |
| 242 elemSettings = $.extend({}, settings, parseImgParams($elem)); | |
| 627 | 243 } |
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244 // store $(this) element in the settings |
| 620 | 245 data = { |
| 640 | 246 $elem : $elem, |
| 629 | 247 settings : elemSettings, |
| 248 queryParams : queryParams | |
| 620 | 249 }; |
| 598 | 250 // store in data element |
| 620 | 251 $elem.data('digilib', data); |
| 597 | 252 } |
| 626 | 253 unpackParams(data); |
| 601 | 254 // create HTML structure |
| 620 | 255 setupScalerDiv(data); |
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256 setupButtons(data, 'buttonsStandard'); |
| 632 | 257 // bird's eye view creation |
| 654 | 258 if (elemSettings.isBirdDivVisible) { |
| 634 | 259 setupBirdDiv(data); |
| 632 | 260 } |
| 620 | 261 // about window creation - TODO: could be deferred? restrict to only one item? |
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262 setupAboutDiv(data); |
| 597 | 263 }); |
| 264 }, | |
| 601 | 265 |
| 647 | 266 // destroy: clean up digilib |
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267 destroy : function(data) { |
| 597 | 268 return this.each(function(){ |
| 629 | 269 var $elem = $(this); |
| 647 | 270 $(window).unbind('.digilib'); // unbind all digilibs(?) |
| 597 | 271 data.digilib.remove(); |
| 629 | 272 $elem.removeData('digilib'); |
| 597 | 273 }); |
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274 }, |
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275 |
| 628 | 276 // show or hide the 'about' window |
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277 showAboutDiv : function(data, show) { |
| 628 | 278 data.settings.isAboutDivVisible = showDiv(data.settings.isAboutDivVisible, data.$aboutDiv, show); |
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279 }, |
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280 |
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281 // event handler: toggles the visibility of the bird's eye window |
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282 showBirdDiv : function (data, show) { |
| 631 | 283 if (data.$birdDiv == null) { |
| 284 // no bird div -> create | |
| 285 setupBirdDiv(data); | |
| 286 } | |
| 648 | 287 // TODO: keep bird view visible after reload (parameter, cookie?) |
| 628 | 288 data.settings.isBirdDivVisible = showDiv(data.settings.isBirdDivVisible, data.$birdDiv, show); |
| 616 | 289 }, |
| 648 | 290 |
| 616 | 291 // goto given page nr (+/-: relative) |
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292 gotoPage : function (data, pageNr) { |
| 629 | 293 var settings = data.settings; |
| 616 | 294 var oldpn = settings.pn; |
| 617 | 295 var pn = setNumValue(settings, "pn", pageNr); |
| 296 if (pn == null) return false; // nothing happened | |
| 616 | 297 if (pn < 1) { |
| 298 alert("no such page (page number too low)"); | |
| 299 settings.pn = oldpn; | |
| 300 return false; | |
| 627 | 301 } |
| 616 | 302 if (settings.pt) { |
| 303 if (pn > settings.pt) { | |
| 304 alert("no such page (page number too high)"); | |
| 305 settings.pn = oldpn; | |
| 306 return false; | |
| 307 } | |
| 627 | 308 } |
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309 // reset mk and others(?) |
| 636 | 310 data.marks = []; |
| 311 data.zoomArea = MAX_ZOOMAREA; | |
| 629 | 312 // then reload |
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313 redisplay(data); |
| 636 | 314 }, |
| 648 | 315 |
| 636 | 316 // zoom by a given factor |
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317 zoomBy : function (data, factor) { |
| 636 | 318 zoomBy(data, factor); |
| 640 | 319 }, |
| 320 | |
| 647 | 321 // zoom interactively |
| 322 zoomArea : function (data) { | |
| 323 zoomArea(data); | |
| 324 }, | |
| 325 | |
| 640 | 326 // zoom out to full page |
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327 zoomFull : function (data, mode) { |
| 640 | 328 data.zoomArea = MAX_ZOOMAREA; |
| 643 | 329 if (mode === 'width') { |
| 330 data.dlOpts.fitwidth = 1; | |
| 331 delete data.dlOpts.fitheight; | |
| 332 } else if (mode === 'height') { | |
| 333 data.dlOpts.fitheight = 1; | |
| 334 delete data.dlOpts.fitwidth; | |
| 335 } else { | |
| 336 delete data.dlOpts.fitwidth; | |
| 337 delete data.dlOpts.fitheight; | |
| 338 } | |
| 640 | 339 redisplay(data); |
| 340 }, | |
| 341 | |
| 342 // set a mark by clicking (or giving a position) | |
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343 setMark : function (data, mpos) { |
| 640 | 344 if (mpos == null) { |
| 345 // interactive | |
| 346 setMark(data); | |
| 347 } else { | |
| 348 // use position | |
| 349 data.marks.push(pos); | |
| 350 redisplay(data); | |
| 351 } | |
| 643 | 352 }, |
| 353 | |
| 354 // remove the last mark | |
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355 removeMark : function (data) { |
| 643 | 356 data.marks.pop(); |
| 357 redisplay(data); | |
| 654 | 358 }, |
| 359 | |
| 360 // mirror the image | |
| 361 mirror : function (data, mode) { | |
| 362 var flags = data.scalerFlags; | |
| 363 if (mode === 'h') { | |
| 364 if (flags.hmir) { | |
| 365 delete flags.hmir; | |
| 366 } else { | |
| 367 flags.hmir = 1; | |
| 368 } | |
| 369 } else { | |
| 370 if (flags.vmir) { | |
| 371 delete flags.vmir; | |
| 372 } else { | |
| 373 flags.vmir = 1; | |
| 374 } | |
| 375 } | |
| 376 redisplay(data); | |
| 656 | 377 }, |
| 378 | |
| 379 // rotate the image | |
| 380 rotate : function (data, angle) { | |
| 381 var rot = data.settings.rot; | |
| 382 if (angle == null) { | |
| 383 angle = window.prompt("Rotation angle:", rot); | |
| 384 } | |
| 385 data.settings.rot = angle; | |
| 386 redisplay(data); | |
| 387 }, | |
| 388 | |
| 389 // change brightness | |
| 390 brightness : function (data, factor) { | |
| 391 var brgt = data.settings.brgt; | |
| 392 if (factor == null) { | |
| 393 factor = window.prompt("Brightness (-255..255)", brgt); | |
| 394 } | |
| 395 data.settings.brgt = factor; | |
| 396 redisplay(data); | |
| 397 }, | |
| 398 | |
| 399 // change contrast | |
| 400 contrast : function (data, factor) { | |
| 401 var cont = data.settings.cont; | |
| 402 if (factor == null) { | |
| 403 factor = window.prompt("Contrast (-8, 8)", cont); | |
| 404 } | |
| 405 data.settings.cont = factor; | |
| 406 redisplay(data); | |
| 597 | 407 } |
| 656 | 408 |
| 409 | |
| 410 | |
| 643 | 411 |
| 598 | 412 }; |
| 597 | 413 |
| 601 | 414 // returns parameters from page url |
| 600 | 415 var parseQueryParams = function() { |
| 629 | 416 return parseQueryString(window.location.search.slice(1)); |
| 417 }; | |
| 648 | 418 |
| 629 | 419 // returns parameters from embedded img-element |
| 600 | 420 var parseImgParams = function($elem) { |
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421 var src = $elem.find('img').first().attr('src'); |
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422 if (!src) { |
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423 return null; |
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424 } |
| 600 | 425 var pos = src.indexOf('?'); |
| 426 var query = (pos < 0) ? '' : src.substring(pos + 1); | |
| 427 var scalerUrl = src.substring(0, pos); | |
| 620 | 428 var params = parseQueryString(query); |
| 429 params.scalerBaseUrl = scalerUrl; | |
| 430 return params; | |
| 629 | 431 }; |
| 600 | 432 |
| 601 | 433 // parses query parameter string into parameter object |
| 600 | 434 var parseQueryString = function(query) { |
| 435 var pairs = query.split("&"); | |
| 620 | 436 var params = {}; |
| 629 | 437 //var keys = []; |
| 600 | 438 for (var i = 0; i < pairs.length; i++) { |
| 439 var pair = pairs[i].split("="); | |
| 440 if (pair.length === 2) { | |
| 620 | 441 params[pair[0]] = pair[1]; |
| 629 | 442 //keys.push(pair[0]); |
| 627 | 443 } |
| 629 | 444 } |
| 620 | 445 return params; |
| 629 | 446 }; |
| 597 | 447 |
| 636 | 448 // returns a query string from key names from a parameter hash (ignoring if the same value is in defaults) |
| 449 var getParamString = function (settings, keys, defaults) { | |
| 608 | 450 var paramString = ''; |
| 643 | 451 var nx = false; |
| 608 | 452 for (i = 0; i < keys.length; ++i) { |
| 453 var key = keys[i]; | |
| 656 | 454 if ((settings[key] != null) && ((defaults == null) || (settings[key] != defaults[key]))) { |
| 608 | 455 // first param gets no '&' |
| 643 | 456 if (nx) { |
| 457 paramString += '&'; | |
| 458 } else { | |
| 459 nx = true; | |
| 460 } | |
| 608 | 461 // add parm=val |
| 462 paramString += key + '=' + settings[key]; | |
| 636 | 463 } |
| 608 | 464 } |
| 465 return paramString; | |
| 624 | 466 }; |
| 467 | |
| 629 | 468 // returns URL and query string for Scaler |
| 469 var getScalerUrl = function (data) { | |
| 646 | 470 var settings = data.settings; |
| 645 | 471 if (settings.scalerBaseUrl == null) { |
| 472 alert("ERROR: URL of digilib Scaler servlet missing!"); | |
| 473 } | |
| 629 | 474 var keys = settings.scalerParamNames; |
| 636 | 475 var queryString = getParamString(settings, keys, defaults); |
| 629 | 476 var url = settings.scalerBaseUrl + '?' + queryString; |
| 477 return url; | |
| 478 }; | |
| 479 | |
| 480 // returns URL and query string for current digilib | |
|
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481 var getDigilibUrl = function (data) { |
| 636 | 482 packParams(data); |
| 629 | 483 var settings = data.settings; |
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637
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484 var queryString = getParamString(settings, settings.digilibParamNames, defaults); |
| 629 | 485 var url = window.location.toString(); |
| 486 var pos = url.indexOf('?'); | |
| 487 var baseUrl = url.substring(0, pos); | |
| 488 var newurl = baseUrl + '?' + queryString; | |
| 489 return newurl; | |
| 490 }; | |
| 491 | |
| 648 | 492 // processes some parameters into objects and stuff |
| 624 | 493 var unpackParams = function (data) { |
| 494 var settings = data.settings; | |
| 629 | 495 // zoom area |
| 624 | 496 var zoomArea = geom.rectangle(settings.wx, settings.wy, settings.ww, settings.wh); |
| 636 | 497 data.zoomArea = zoomArea; |
| 629 | 498 // marks |
| 624 | 499 var marks = []; |
| 643 | 500 if (settings.mk) { |
| 501 var mk = settings.mk; | |
| 502 if (mk.indexOf(";") >= 0) { | |
| 503 var pa = mk.split(";"); // old format with ";" | |
| 504 } else { | |
| 505 var pa = mk.split(","); // new format | |
| 506 } | |
| 507 for (var i = 0; i < pa.length ; i++) { | |
| 508 var pos = pa[i].split("/"); | |
| 509 if (pos.length > 1) { | |
| 510 marks.push(geom.position(pos[0], pos[1])); | |
| 511 } | |
| 626 | 512 } |
| 624 | 513 } |
| 636 | 514 data.marks = marks; |
| 643 | 515 // mo (Scaler flags) |
| 516 var flags = {}; | |
| 517 if (settings.mo) { | |
| 518 var pa = settings.mo.split(","); | |
| 519 for (var i = 0; i < pa.length ; i++) { | |
| 520 flags[pa[i]] = pa[i]; | |
| 521 } | |
| 522 } | |
| 523 data.scalerFlags = flags; | |
| 524 // clop (digilib options) | |
| 525 var opts = {}; | |
| 526 if (settings.clop) { | |
| 527 var pa = settings.clop.split(","); | |
| 528 for (var i = 0; i < pa.length ; i++) { | |
| 529 opts[pa[i]] = pa[i]; | |
| 530 } | |
| 531 } | |
| 532 data.dlOpts = opts; | |
| 654 | 533 // birdview option |
| 534 if (opts.birdview) { | |
| 535 settings.isBirdDivVisible = 1; | |
| 536 } | |
| 648 | 537 }; |
| 538 | |
| 624 | 539 // put objects back into parameters |
| 540 var packParams = function (data) { | |
| 541 var settings = data.settings; | |
| 629 | 542 // zoom area |
| 636 | 543 if (data.zoomArea) { |
| 640 | 544 settings.wx = cropFloat(data.zoomArea.x); |
| 545 settings.wy = cropFloat(data.zoomArea.y); | |
| 546 settings.ww = cropFloat(data.zoomArea.width); | |
| 547 settings.wh = cropFloat(data.zoomArea.height); | |
| 624 | 548 } |
| 629 | 549 // marks |
| 636 | 550 if (data.marks) { |
| 643 | 551 settings.mk = ''; |
| 636 | 552 for (var i = 0; i < data.marks.length; i++) { |
| 643 | 553 if (i) { |
| 554 settings.mk += ','; | |
| 555 } | |
| 556 settings.mk += cropFloat(data.marks[i].x).toString() + '/' + cropFloat(data.marks[i].y).toString(); | |
| 624 | 557 } |
| 643 | 558 } |
| 559 // Scaler flags | |
| 560 if (data.scalerFlags) { | |
| 561 var mo = ''; | |
| 562 for (var f in data.scalerFlags) { | |
| 563 if (mo) { | |
| 564 mo += ','; | |
| 565 } | |
| 566 mo += f; | |
| 567 } | |
| 568 settings.mo = mo; | |
| 569 } | |
| 654 | 570 // digilib option birdview |
| 571 if (settings.isBirdDivVisible) { | |
| 572 data.dlOpts.birdview = 1; | |
| 655 | 573 } else { |
| 574 delete data.dlOpts.birdview; | |
| 654 | 575 } |
| 643 | 576 // digilib options |
| 577 if (data.dlOpts) { | |
| 578 var clop = ''; | |
| 579 for (var o in data.dlOpts) { | |
| 580 if (clop) { | |
| 581 clop += ','; | |
| 582 } | |
| 583 clop += o; | |
| 584 } | |
| 585 settings.clop = clop; | |
| 624 | 586 } |
| 587 }; | |
| 648 | 588 |
| 615 | 589 // (re)load the img from a new scaler URL |
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590 var redisplay = function (data) { |
| 629 | 591 var settings = data.settings; |
| 592 if (settings.interactionMode === 'fullscreen') { | |
| 593 // update location.href (browser URL) in fullscreen mode | |
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594 var url = getDigilibUrl(data); |
| 629 | 595 var history = window.history; |
| 596 if (typeof(history.pushState) === 'function') { | |
| 597 console.debug("we could modify history, but we don't..."); | |
| 598 } | |
| 599 window.location = url; | |
| 600 } else { | |
| 601 // embedded mode -- just change img src | |
| 602 var url = getScalerUrl(data); | |
| 603 data.$img.attr('src', url); | |
| 604 } | |
| 615 | 605 }; |
| 606 | |
| 655 | 607 // returns maximum size for scaler img in fullscreen mode |
| 608 var getFullscreenImgSize = function($elem) { | |
| 609 var $win = $(window); | |
| 610 var winH = $win.height(); | |
| 611 var winW = $win.width(); | |
| 612 // TODO: account for borders? | |
| 613 return geom.size(winW, winH); | |
| 614 }; | |
| 615 | |
| 601 | 616 // creates HTML structure for digilib in elem |
| 620 | 617 var setupScalerDiv = function (data) { |
| 618 var settings = data.settings; | |
| 640 | 619 var $elem = data.$elem; |
| 616 | 620 var $img; |
| 601 | 621 if (settings.interactionMode === 'fullscreen') { |
| 602 | 622 // fullscreen |
| 623 var imgSize = getFullscreenImgSize($elem); | |
| 643 | 624 // fitwidth/height omits destination height/width |
| 625 if (data.dlOpts['fitheight'] == null) { | |
| 626 settings.dw = imgSize.width; | |
| 627 } | |
| 628 if (data.dlOpts['fitwidth'] == null) { | |
| 629 settings.dh = imgSize.height; | |
| 630 } | |
|
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631 $img = $('<img/>'); |
| 629 | 632 var scalerUrl = getScalerUrl(data); |
| 633 $img.attr('src', scalerUrl); | |
| 602 | 634 } else { |
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635 // embedded mode -- try to keep img tag |
| 616 | 636 $img = $elem.find('img'); |
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637 if ($img.length > 0) { |
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638 console.debug("img detach:",$img); |
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639 $img.detach(); |
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640 } else { |
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641 $img = $('<img/>'); |
| 629 | 642 var scalerUrl = getScalerUrl(data); |
| 643 $img.attr('src', scalerUrl); | |
|
606
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644 } |
| 601 | 645 } |
|
606
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646 // create new html |
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647 $elem.empty(); // TODO: should we keep stuff for customization? |
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648 var $scaler = $('<div class="scaler"/>'); |
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649 $elem.append($scaler); |
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650 $scaler.append($img); |
| 615 | 651 $img.addClass('pic'); |
| 642 | 652 data.$scaler = $scaler; |
| 629 | 653 data.$img = $img; |
| 654 $img.load(scalerImgLoadedHandler(data)); | |
| 601 | 655 }; |
| 608 | 656 |
| 603 | 657 // creates HTML structure for buttons in elem |
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658 var setupButtons = function (data, actionGroup) { |
| 640 | 659 var $elem = data.$elem; |
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660 var settings = data.settings; |
| 603 | 661 if (settings.interactionMode === 'fullscreen') { |
| 662 // fullscreen -- create new | |
| 605 | 663 var $buttonsDiv = $('<div class="buttons"></div>'); |
| 664 $elem.append($buttonsDiv); | |
|
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665 var actionNames = settings[actionGroup]; |
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666 for (var i = 0; i < actionNames.length; i++) { |
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667 var actionName = actionNames[i]; |
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668 var buttonSettings = settings.buttons[actionName]; |
| 605 | 669 // construct the button html |
| 670 var $button = $('<div class="button"></div>'); | |
| 671 var $a = $('<a/>'); | |
| 607 | 672 var $img = $('<img class="button"/>'); |
| 605 | 673 $buttonsDiv.append($button); |
| 674 $button.append($a); | |
| 675 $a.append($img); | |
| 676 // add attributes and bindings | |
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677 $button.attr('title', buttonSettings.tooltip); |
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678 $button.addClass('button-' + actionName); |
| 628 | 679 // create handler for the buttons |
| 642 | 680 $a.bind('click.digilib', (function () { |
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681 // we create a new closure to capture the value of action |
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682 var action = buttonSettings.onclick; |
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683 if ($.isArray(action)) { |
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684 // the handler function calls digilib with action and parameters |
| 642 | 685 return function (evt) { |
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644
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686 console.debug('click action=', action, ' evt=', evt); |
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687 $elem.digilib.apply($elem, action); |
| 642 | 688 return false; |
| 612 | 689 }; |
| 628 | 690 } else { |
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691 // the handler function calls digilib with action |
| 642 | 692 return function (evt) { |
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693 console.debug('click action=', action, ' evt=', evt); |
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694 $elem.digilib(action); |
| 642 | 695 return false; |
| 628 | 696 }; |
| 697 } | |
| 698 })()); | |
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699 $img.attr('src', settings.buttonsImagePath + buttonSettings.img); |
| 630 | 700 } |
| 604 | 701 } |
| 655 | 702 // make buttons div scroll if too large for window |
| 703 if ($buttonsDiv.height() > $(window).height() - 10) { | |
| 704 $buttonsDiv.css('position', 'absolute'); | |
| 705 } | |
| 605 | 706 return $buttonsDiv; |
| 603 | 707 }; |
| 608 | 708 |
| 709 // creates HTML structure for the bird's eye view in elem | |
| 631 | 710 var setupBirdDiv = function (data) { |
| 640 | 711 var $elem = data.$elem; |
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712 var settings = data.settings; |
| 608 | 713 // use only the relevant parameters |
| 714 var keys = ['fn','pn','dw','dh']; | |
| 632 | 715 var birdSettings = $.extend({}, settings, settings.birdDivOptions); |
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716 var birdUrl = settings.scalerBaseUrl + '?' + getParamString(birdSettings, keys); |
| 608 | 717 // the bird's eye div |
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718 var $birdDiv = $('<div class="birdview" style="display:none"/>'); |
| 608 | 719 // the detail indicator frame |
| 648 | 720 var $birdzoomDiv = $('<div class="birdzoom" style="position: absolute; background-color: transparent;"/>'); |
| 608 | 721 // the small image |
| 722 var $birdImg = $('<img class="birdimg"/>'); | |
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723 $elem.append($birdDiv); |
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724 $birdDiv.append($birdzoomDiv); |
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725 $birdDiv.append($birdImg); |
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726 data.$birdDiv = $birdDiv; |
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727 data.$birdImg = $birdImg; |
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728 $birdImg.load(birdImgLoadedHandler(data)); |
| 608 | 729 $birdImg.attr('src', birdUrl); |
|
633
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730 if (data.settings.isBirdDivVisible) { |
|
651
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731 $birdDiv.fadeIn(); |
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633
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732 } |
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733 }; |
| 608 | 734 |
| 618 | 735 // creates HTML structure for the about view in elem |
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736 var setupAboutDiv = function (data) { |
| 640 | 737 var $elem = data.$elem; |
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738 var settings = data.settings; |
| 618 | 739 var $aboutDiv = $('<div class="about" style="display:none"/>'); |
| 609 | 740 var $header = $('<p>Digilib Graphic Viewer</p>'); |
| 741 var $link = $('<a/>'); | |
| 742 var $logo = $('<img class="logo" title="digilib"/>'); | |
| 743 var $content = $('<p/>'); | |
| 744 $elem.append($aboutDiv); | |
| 745 $aboutDiv.append($header); | |
| 746 $aboutDiv.append($link); | |
| 747 $aboutDiv.append($content); | |
| 748 $link.append($logo); | |
| 749 $logo.attr('src', settings.logoUrl); | |
| 628 | 750 $link.attr('href', settings.homeUrl); |
| 609 | 751 $content.text('Version: ' + settings.version); |
| 628 | 752 // click hides |
| 642 | 753 $aboutDiv.bind('click.digilib', function () { |
| 639 | 754 settings.isAboutDivVisible = showDiv(settings.isAboutDivVisible, $aboutDiv, 0); |
| 642 | 755 return false; |
| 756 }); | |
| 628 | 757 data.$aboutDiv = $aboutDiv; |
| 627 | 758 }; |
| 759 | |
| 628 | 760 // shows some window e.g. 'about' (toggle visibility if show is null) |
| 761 var showDiv = function (isVisible, $div, show) { | |
| 638 | 762 if (show == null) { |
| 628 | 763 // toggle visibility |
| 764 isVisible = !isVisible; | |
| 765 } else { | |
| 766 // set visibility | |
| 767 isVisible = show; | |
| 768 } | |
| 769 if (isVisible) { | |
| 770 $div.fadeIn(); | |
| 771 } else { | |
| 772 $div.fadeOut(); | |
| 773 } | |
| 774 return isVisible; | |
| 627 | 775 }; |
| 609 | 776 |
|
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777 // create Transform from area and $img |
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778 var getImgTrafo = function ($img, area) { |
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779 var picrect = geom.rectangle($img); |
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780 var trafo = geom.transform(); |
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781 // subtract area offset and size |
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782 trafo.concat(trafo.getTranslation(geom.position(-area.x, -area.y))); |
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783 trafo.concat(trafo.getScale(geom.size(1/area.width, 1/area.height))); |
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784 // scale to screen size |
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785 trafo.concat(trafo.getScale(picrect)); |
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786 trafo.concat(trafo.getTranslation(picrect)); |
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787 return trafo; |
| 648 | 788 }; |
|
651
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|
789 |
|
606
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|
790 // returns function for load event of scaler img |
| 629 | 791 var scalerImgLoadedHandler = function (data) { |
| 792 var $img = data.$img; | |
| 626 | 793 return function () { |
| 620 | 794 console.debug("img loaded! this=", this, " data=", data); |
| 795 // create Transform from current area and picsize | |
|
651
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796 data.imgTrafo = getImgTrafo($img, data.zoomArea); |
| 620 | 797 // display marks |
| 626 | 798 renderMarks(data); |
| 620 | 799 //digilib.showArrows(); // show arrow overlays for zoom navigation |
|
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800 }; |
|
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801 }; |
|
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802 |
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803 // returns function for load event of bird's eye view img |
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804 var birdImgLoadedHandler = function (data) { |
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805 var $img = data.$birdImg; |
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806 return function () { |
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807 console.debug("birdimg loaded! this=", this, " data=", data); |
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808 // create Transform from current area and picsize |
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809 data.birdTrafo = getImgTrafo($img, MAX_ZOOMAREA); |
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810 // display marks |
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811 renderBirdArea(data); |
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812 }; |
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813 }; |
| 626 | 814 |
| 815 // place marks on the image | |
| 816 var renderMarks = function (data) { | |
| 640 | 817 var $elem = data.$elem; |
| 636 | 818 var marks = data.marks; |
| 642 | 819 // TODO: clear marks first(?) |
| 626 | 820 for (var i = 0; i < marks.length; i++) { |
| 821 var mark = marks[i]; | |
| 636 | 822 if (data.zoomArea.containsPosition(mark)) { |
| 626 | 823 var mpos = data.imgTrafo.transform(mark); |
| 824 // create mark | |
| 825 var html = '<div class="mark">'+(i+1)+'</div>'; | |
| 826 var $mark = $(html); | |
| 827 $elem.append($mark); | |
| 647 | 828 $mark.offset({left : mpos.x, top : mpos.y}); |
| 626 | 829 } |
| 830 } | |
| 831 }; | |
| 648 | 832 |
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833 var renderBirdArea = function (data) { |
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834 var $ind = data.$birdDiv.find('div.birdzoom'); |
| 652 | 835 var zoomArea = data.zoomArea; |
| 836 var indRect = data.birdTrafo.transform(zoomArea); | |
| 653 | 837 if (isFullArea(zoomArea)) return $ind.hide(); |
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838 // TODO: set the coordinates all in one call? |
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839 $ind.width(indRect.width); |
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840 $ind.height(indRect.height); |
| 652 | 841 // offset minus frame width |
| 842 $ind.offset({ left : indRect.x-2, top : indRect.y-2 }); | |
| 843 $ind.css(data.settings.birdIndicatorStyle); | |
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844 } |
| 652 | 845 |
| 640 | 846 // zooms by the given factor |
| 636 | 847 var zoomBy = function(data, factor) { |
| 848 var area = data.zoomArea; | |
| 849 var newarea = area.copy(); | |
| 850 // scale | |
| 851 newarea.width /= factor; | |
| 852 newarea.height /= factor; | |
| 853 // and recenter | |
| 854 newarea.x -= 0.5 * (newarea.width - area.width); | |
| 855 newarea.y -= 0.5 * (newarea.height - area.height); | |
| 856 newarea = MAX_ZOOMAREA.fit(newarea); | |
| 857 data.zoomArea = newarea; | |
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637
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858 redisplay(data); |
| 636 | 859 }; |
| 860 | |
| 640 | 861 // add a mark where clicked |
| 862 var setMark = function (data) { | |
| 642 | 863 var $scaler = data.$scaler; |
| 640 | 864 console.debug("setmark"); |
| 865 // start event capturing | |
| 642 | 866 $scaler.one('click.digilib', function (evt) { |
| 640 | 867 // event handler adding a new mark |
| 868 console.debug("setmark.click evt=",evt); | |
| 869 var mpos = geom.position(evt.pageX, evt.pageY); | |
| 870 var pos = data.imgTrafo.invtransform(mpos); | |
| 871 data.marks.push(pos); | |
| 872 redisplay(data); | |
| 642 | 873 return false; // do we even get here? |
| 640 | 874 }); |
| 875 }; | |
| 647 | 876 |
| 877 var zoomArea = function(data) { | |
| 878 $elem = data.$elem; | |
| 879 $scaler = data.$scaler; | |
| 880 var pt1, pt2; | |
| 881 var $zoomDiv = $('<div class="zoomrect" style="display:none"/>'); | |
| 882 $elem.append($zoomDiv); | |
| 883 //var overlay = getElement("overlay"); | |
| 884 // use overlay div to avoid <img> mousemove problems | |
| 885 var picRect = geom.rectangle($scaler); | |
| 886 // FIX ME: is there a way to query the border width from CSS info? | |
| 887 // rect.x -= 2; // account for overlay borders | |
| 888 // rect.y -= 2; | |
| 889 //moveElement(overlay, picRect); | |
| 890 //showElement(overlay, true); | |
| 891 // start event capturing | |
| 892 //registerEvent("mousedown", overlay, zoomStart); | |
| 893 //registerEvent("mousedown", this.scalerImg, zoomStart); | |
| 894 | |
| 895 var zoomStart = function (evt) { | |
| 896 pt1 = geom.position(evt); | |
| 897 // setup and show zoom div | |
| 898 //moveElement(zoomdiv, Rectangle(pt1.x, pt1.y, 0, 0)); | |
| 899 $zoomDiv.offset({left : pt1.x, top : pt1.y}); | |
| 900 $zoomDiv.show(); | |
| 901 // register events | |
| 902 $elem.bind("mousemove.digilib", zoomMove); | |
| 903 $elem.bind("mouseup.digilib", zoomEnd); | |
| 904 return false; | |
| 905 }; | |
| 906 | |
| 907 // mouseup handler: end moving | |
| 908 var zoomEnd = function (evt) { | |
| 909 pt2 = geom.position(evt); | |
| 910 // assume a click and continue if the area is too small | |
| 911 var clickRect = geom.rectangle(pt1, pt2); | |
| 912 clickRect.normalize(); | |
| 913 console.debug("clickRect.getArea()=",clickRect.getArea()); | |
| 914 if (clickRect.getArea() <= 5) { | |
| 915 return false; | |
| 916 } | |
| 917 // hide zoom div | |
| 918 $zoomDiv.remove(); | |
| 919 // unregister events | |
| 920 $elem.unbind("mousemove.digilib", zoomMove); | |
| 921 $elem.unbind("mouseup.digilib", zoomEnd); | |
| 922 // clip and transform | |
| 923 clickRect.clipTo(picRect); | |
| 924 var area = data.imgTrafo.invtransform(clickRect); | |
| 925 data.zoomArea = area; | |
| 926 // zoomed is always fit | |
| 927 data.settings.ws = 1; | |
| 928 redisplay(data); | |
| 929 return false; | |
| 930 }; | |
| 931 | |
| 932 // mouse move handler | |
| 933 var zoomMove = function (evt) { | |
| 934 pt2 = geom.position(evt); | |
| 935 var rect = geom.rectangle(pt1, pt2); | |
| 936 rect.normalize(); | |
| 937 rect.clipTo(picRect); | |
| 938 // update zoom div | |
| 939 $zoomDiv.offset({left : rect.x, top : rect.y}); | |
| 940 $zoomDiv.width(rect.width).height(rect.height); | |
| 941 return false; | |
| 942 }; | |
| 943 | |
| 944 // bind start zoom handler | |
| 945 $scaler.one('mousedown.digilib', zoomStart); | |
| 946 }; | |
| 640 | 947 |
| 643 | 948 // sets a key to a value (relative values with +/- if relative=true) |
| 949 var setNumValue = function(settings, key, value) { | |
| 950 if (isNumber(value)) return settings[key] = value; | |
| 951 var sign = value.substring(0,1); | |
| 952 if (sign === '+' || sign === '-') { | |
| 953 if (settings[key] == null) { | |
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954 // this isn't perfect but still... |
| 643 | 955 settings[key] = 0; |
| 956 } | |
| 957 settings[key] = parseFloat(settings[key]) + parseFloat(value); | |
| 958 } else { | |
| 959 settings[key] = value; | |
| 960 } | |
| 961 return settings[key]; | |
| 962 }; | |
| 648 | 963 |
| 964 // auxiliary function (from old dllib.js) | |
| 652 | 965 isFullArea = function(area) { |
| 966 return (area.width === 1.0) && (area.height === 1.0); | |
| 648 | 967 }; |
| 968 | |
| 634 | 969 // auxiliary function (from Douglas Crockford, A.10) |
| 970 var isNumber = function isNumber(value) { | |
| 971 return typeof value === 'number' && isFinite(value); | |
| 972 }; | |
| 648 | 973 |
| 624 | 974 // auxiliary function to crop senseless precision |
| 975 var cropFloat = function (x) { | |
| 630 | 976 return parseInt(10000 * x, 10) / 10000; |
| 624 | 977 }; |
| 648 | 978 |
| 598 | 979 // hook plugin into jquery |
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980 $.fn.digilib = function(action) { |
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981 if (actions[action]) { |
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982 // call action on this with the remaining arguments (inserting data as first argument) |
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983 var $elem = $(this); |
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984 var data = $elem.data('digilib'); |
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985 var args = Array.prototype.slice.call(arguments, 1); |
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986 args.unshift(data); |
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987 return actions[action].apply(this, args); |
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988 } else if (typeof(action) === 'object' || !action) { |
| 627 | 989 // call init on this |
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990 return actions.init.apply(this, arguments); |
| 598 | 991 } else { |
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992 $.error( 'action ' + action + ' does not exist on jQuery.digilib' ); |
| 598 | 993 } |
| 994 }; | |
| 597 | 995 |
| 996 })(jQuery); |