Mercurial > hg > digilib
annotate client/digitallibrary/jquery/jquery.digilib.js @ 699:c2f42b919c59 jquery
some minor fixes, img reload still missing
| author | hertzhaft |
|---|---|
| date | Fri, 28 Jan 2011 16:29:54 +0100 |
| parents | 3379674e4e15 |
| children | 5909beb76d16 |
| 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 = { | |
| 685 | 9 log : function(){}, |
| 10 debug : function(){}, | |
| 11 error : function(){} | |
| 12 }; | |
| 13 var customConsole = true; | |
| 14 }; | |
| 597 | 15 |
| 16 (function($) { | |
|
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17 var buttons = { |
| 603 | 18 reference : { |
| 682 | 19 onclick : "reference", |
| 603 | 20 tooltip : "get a reference URL", |
| 21 img : "reference.png" | |
| 22 }, | |
| 23 zoomin : { | |
| 636 | 24 onclick : ["zoomBy", 1.4], |
| 603 | 25 tooltip : "zoom in", |
| 26 img : "zoom-in.png" | |
| 27 }, | |
| 28 zoomout : { | |
| 636 | 29 onclick : ["zoomBy", 0.7], |
| 603 | 30 tooltip : "zoom out", |
| 31 img : "zoom-out.png" | |
| 32 }, | |
| 33 zoomarea : { | |
| 647 | 34 onclick : "zoomArea", |
| 603 | 35 tooltip : "zoom area", |
| 36 img : "zoom-area.png" | |
| 37 }, | |
| 38 zoomfull : { | |
| 643 | 39 onclick : "zoomFull", |
| 603 | 40 tooltip : "view the whole image", |
| 41 img : "zoom-full.png" | |
| 42 }, | |
| 43 pagewidth : { | |
| 643 | 44 onclick : ["zoomFull", "width"], |
| 603 | 45 tooltip : "page width", |
| 46 img : "pagewidth.png" | |
| 47 }, | |
| 48 back : { | |
| 616 | 49 onclick : ["gotoPage", "-1"], |
| 603 | 50 tooltip : "goto previous image", |
| 51 img : "back.png" | |
| 52 }, | |
| 53 fwd : { | |
| 616 | 54 onclick : ["gotoPage", "+1"], |
| 603 | 55 tooltip : "goto next image", |
| 56 img : "fwd.png" | |
| 57 }, | |
| 58 page : { | |
| 59 onclick : "javascript:gotoPageWin()", | |
| 60 tooltip : "specify image", | |
| 61 img : "page.png" | |
| 62 }, | |
| 63 bird : { | |
| 628 | 64 onclick : "showBirdDiv", |
| 603 | 65 tooltip : "show bird's eye view", |
| 66 img : "birds-eye.png" | |
| 67 }, | |
| 68 help : { | |
| 628 | 69 onclick : "showAboutDiv", |
| 603 | 70 tooltip : "about Digilib", |
| 71 img : "help.png" | |
| 72 }, | |
| 73 reset : { | |
| 681 | 74 onclick : "reset", |
| 603 | 75 tooltip : "reset image", |
| 76 img : "reset.png" | |
| 77 }, | |
| 78 mark : { | |
| 640 | 79 onclick : "setMark", |
| 603 | 80 tooltip : "set a mark", |
| 81 img : "mark.png" | |
| 82 }, | |
| 83 delmark : { | |
| 643 | 84 onclick : "removeMark", |
| 603 | 85 tooltip : "delete the last mark", |
| 86 img : "delmark.png" | |
| 87 }, | |
| 88 hmir : { | |
| 654 | 89 onclick : ["mirror", "h"], |
| 603 | 90 tooltip : "mirror horizontally", |
| 91 img : "mirror-horizontal.png" | |
| 92 }, | |
| 93 vmir : { | |
| 654 | 94 onclick : ["mirror", "v"], |
| 603 | 95 tooltip : "mirror vertically", |
| 96 img : "mirror-vertical.png" | |
| 97 }, | |
| 98 rot : { | |
| 656 | 99 onclick : "rotate", |
| 603 | 100 tooltip : "rotate image", |
| 101 img : "rotate.png" | |
| 102 }, | |
| 103 brgt : { | |
| 656 | 104 onclick : "brightness", |
| 603 | 105 tooltip : "set brightness", |
| 106 img : "brightness.png" | |
| 107 }, | |
| 108 cont : { | |
| 656 | 109 onclick : "contrast", |
| 603 | 110 tooltip : "set contrast", |
| 111 img : "contrast.png" | |
| 112 }, | |
| 113 rgb : { | |
| 114 onclick : "javascript:setParamWin('rgb', '...')", | |
| 115 tooltip : "set rgb values", | |
| 116 img : "rgb.png" | |
| 117 }, | |
| 118 quality : { | |
| 696 | 119 onclick : "setquality", |
| 603 | 120 tooltip : "set image quality", |
| 121 img : "quality.png" | |
| 122 }, | |
| 123 size : { | |
| 124 onclick : "javascript:toggleSizeMenu()", | |
| 125 tooltip : "set page size", | |
| 126 img : "size.png" | |
| 127 }, | |
| 128 calibrationx : { | |
| 129 onclick : "javascript:calibrate('x')", | |
| 130 tooltip : "calibrate screen x-ratio", | |
| 131 img : "calibration-x.png" | |
| 132 }, | |
| 133 scale : { | |
| 134 onclick : "javascript:toggleScaleMenu()", | |
| 135 tooltip : "change image scale", | |
| 136 img : "original-size.png" | |
| 137 }, | |
| 692 | 138 toggleoptions : { |
| 139 onclick : "morebuttons", | |
| 140 tooltip : "more options", | |
| 141 img : "options.png" | |
| 142 }, | |
| 683 | 143 moreoptions : { |
| 144 onclick : ["morebuttons", "+1"], | |
| 145 tooltip : "more options", | |
| 146 img : "options.png" | |
| 147 }, | |
| 148 lessoptions : { | |
| 149 onclick : ["morebuttons", "-1"], | |
| 150 tooltip : "less options", | |
| 603 | 151 img : "options.png" |
| 152 }, | |
| 153 SEP : { | |
| 154 img : "sep.png" | |
| 155 } | |
| 156 }; | |
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157 |
| 598 | 158 var defaults = { |
| 609 | 159 // version of this script |
| 628 | 160 'version' : 'jquery.digilib.js 0.9', |
| 609 | 161 // logo url |
| 162 'logoUrl' : '../img/digilib-logo-text1.png', | |
| 628 | 163 // homepage url (behind logo) |
| 164 'homeUrl' : 'http://digilib.berlios.de', | |
| 603 | 165 // base URL to Scaler servlet |
| 645 | 166 'scalerBaseUrl' : null, |
| 603 | 167 // list of Scaler parameters |
| 620 | 168 'scalerParamNames' : ['fn','pn','dw','dh','ww','wh','wx','wy','ws','mo', |
| 169 'rot','cont','brgt','rgbm','rgba','ddpi','ddpix','ddpiy'], | |
| 170 // Scaler parameter defaults | |
| 636 | 171 'pn' : 1, |
| 620 | 172 'ww' : 1.0, |
| 173 'wh' : 1.0, | |
| 174 'wx' : 0.0, | |
| 175 'wy' : 0.0, | |
| 176 'ws' : 1.0, | |
| 636 | 177 'mo' : '', |
| 178 'rot' : 0, | |
| 179 'cont' : 0, | |
| 180 'brgt' : 0, | |
| 181 'rgbm' : '0/0/0', | |
| 182 'rgba' : '0/0/0', | |
| 183 'ddpi' : null, | |
| 184 'ddpix' : null, | |
| 185 'ddpiy' : null, | |
|
637
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186 // list of digilib parameters |
| 643 | 187 'digilibParamNames' : ['fn','pn','ww','wh','wx','wy','ws','mo','rot','cont','brgt','rgbm','rgba','mk','clop'], |
|
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188 // digilib parameter defaults |
| 636 | 189 'mk' : '', |
| 643 | 190 'clop' : '', |
| 636 | 191 // mode of operation: |
| 192 // fullscreen = take parameters from page URL, keep state in page URL | |
| 193 // embedded = take parameters from Javascript options, keep state inside object | |
| 603 | 194 'interactionMode' : 'fullscreen', |
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195 // buttons |
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196 'buttons' : buttons, |
| 661 | 197 // defaults for digilib buttons |
| 658 | 198 'buttonSettings' : { |
| 199 'fullscreen' : { | |
| 661 | 200 // path to button images (must end with a slash) |
| 658 | 201 'imagePath' : 'img/fullscreen/', |
| 692 | 202 'standardSet' : ["reference","zoomin","zoomout","zoomarea","zoomfull","pagewidth","back","fwd","page","bird","SEP","help","reset","toggleoptions"], |
| 203 'specialSet' : ["mark","delmark","hmir","vmir","rot","brgt","cont","rgb","quality","size","calibrationx","scale","SEP","toggleoptions"], | |
| 675 | 204 'buttonSets' : ['standardSet', 'specialSet'] |
| 658 | 205 }, |
| 206 'embedded' : { | |
| 207 'imagePath' : 'img/embedded/16/', | |
| 692 | 208 'standardSet' : ["reference","zoomin","zoomout","zoomarea","zoomfull","back","fwd","page","bird","SEP","help","reset","toggleoptions"], |
| 209 'specialSet' : ["hmir","vmir","rot","brgt","cont","rgb","quality","size","SEP","toggleoptions"], | |
| 675 | 210 'buttonSets' : ['standardSet', 'specialSet'] |
| 658 | 211 } |
| 690 | 212 }, |
| 213 // number of visible button groups | |
| 214 'visibleButtonSets' : 1, | |
| 609 | 215 // is birdView shown? |
| 216 'isBirdDivVisible' : false, | |
| 661 | 217 // dimensions of bird's eye div |
| 667 | 218 'birdDivWidth' : 200, |
| 219 'birdDivHeight' : 200, | |
| 661 | 220 // style of the zoom area indicator in the bird's eye div |
| 652 | 221 'birdIndicatorStyle' : {'border' : '2px solid #ff0000' }, |
| 661 | 222 // style of zoom area "rubber band" |
| 223 'zoomrectStyle' : {'border' : '2px solid #ff0000' }, | |
| 609 | 224 // is the "about" window shown? |
| 225 'isAboutDivVisible' : false | |
| 226 | |
| 603 | 227 }; |
| 648 | 228 |
| 601 | 229 // affine geometry classes |
| 230 var geom = dlGeometry(); | |
| 648 | 231 |
| 636 | 232 var MAX_ZOOMAREA = geom.rectangle(0, 0, 1, 1); |
| 648 | 233 |
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234 var actions = { |
| 661 | 235 // init: digilib initialization |
| 236 init : function(options) { | |
| 237 // settings for this digilib instance are merged from defaults and options | |
| 238 var settings = $.extend({}, defaults, options); | |
| 239 var isFullscreen = settings.interactionMode === 'fullscreen'; | |
| 240 var queryParams = {}; | |
| 241 if (isFullscreen) { | |
| 242 queryParams = parseQueryParams(); | |
| 243 // check scalerBaseUrl | |
| 244 if (settings.scalerBaseUrl == null) { | |
| 245 // try the host this came from | |
| 246 var h = window.location.host; | |
| 247 if (window.location.host) { | |
| 248 var url = window.location.href; | |
| 249 // assume the page lives in [webapp]/jquery/ | |
| 250 var pos = url.indexOf('jquery/'); | |
| 251 if (pos > 0) { | |
| 252 settings.scalerBaseUrl = url.substring(0, pos) + 'servlet/Scaler'; | |
| 645 | 253 } |
| 254 } | |
| 629 | 255 } |
| 661 | 256 } |
| 257 return this.each(function() { | |
| 258 var $elem = $(this); | |
| 259 var data = $elem.data('digilib'); | |
| 681 | 260 var params, elemSettings; |
| 661 | 261 // if the plugin hasn't been initialized yet |
| 262 if (!data) { | |
| 263 // merge query parameters | |
| 264 if (isFullscreen) { | |
| 681 | 265 params = queryParams; |
| 661 | 266 } else { |
| 681 | 267 params = parseImgParams($elem); |
| 268 }; | |
| 661 | 269 // store $(this) element in the settings |
| 681 | 270 elemSettings = $.extend({}, settings, params); |
| 690 | 271 data = { |
| 661 | 272 $elem : $elem, |
| 273 settings : elemSettings, | |
| 681 | 274 queryParams : params |
| 661 | 275 }; |
| 276 // store in data element | |
| 277 $elem.data('digilib', data); | |
| 278 } | |
| 279 unpackParams(data); | |
| 675 | 280 // create HTML structure for scaler |
| 661 | 281 setupScalerDiv(data); |
| 690 | 282 // add buttons |
| 283 for (var i = 0; i < elemSettings.visibleButtonSets; ++i) { | |
| 284 showButtons(data, true, i); | |
| 285 } | |
| 661 | 286 // bird's eye view creation |
| 287 if (elemSettings.isBirdDivVisible) { | |
| 631 | 288 setupBirdDiv(data); |
| 289 } | |
| 661 | 290 // about window creation - TODO: could be deferred? restrict to only one item? |
| 291 setupAboutDiv(data); | |
| 292 }); | |
| 293 }, | |
| 294 | |
| 295 // destroy: clean up digilib | |
| 296 destroy : function(data) { | |
| 297 return this.each(function(){ | |
| 298 var $elem = $(this); | |
| 299 $(window).unbind('.digilib'); // unbind all digilibs(?) | |
| 300 data.digilib.remove(); | |
| 301 $elem.removeData('digilib'); | |
| 302 }); | |
| 303 }, | |
| 304 | |
| 305 // show or hide the 'about' window | |
| 306 showAboutDiv : function(data, show) { | |
| 307 data.settings.isAboutDivVisible = showDiv(data.settings.isAboutDivVisible, data.$aboutDiv, show); | |
| 308 }, | |
| 648 | 309 |
| 661 | 310 // event handler: toggles the visibility of the bird's eye window |
| 311 showBirdDiv : function (data, show) { | |
| 312 if (data.$birdDiv == null) { | |
| 313 // no bird div -> create | |
| 314 setupBirdDiv(data); | |
| 315 } | |
| 316 data.settings.isBirdDivVisible = showDiv(data.settings.isBirdDivVisible, data.$birdDiv, show); | |
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317 data.$birdImg.triggerHandler('load'); |
| 661 | 318 }, |
| 319 | |
| 320 // goto given page nr (+/-: relative) | |
| 321 gotoPage : function (data, pageNr) { | |
| 322 var settings = data.settings; | |
| 323 var oldpn = settings.pn; | |
| 324 var pn = setNumValue(settings, "pn", pageNr); | |
| 325 if (pn == null) return false; // nothing happened | |
| 326 if (pn < 1) { | |
| 327 alert("no such page (page number too low)"); | |
| 328 settings.pn = oldpn; | |
| 329 return false; | |
| 330 } | |
| 331 if (settings.pt) { | |
| 332 if (pn > settings.pt) { | |
| 333 alert("no such page (page number too high)"); | |
| 616 | 334 settings.pn = oldpn; |
| 335 return false; | |
| 627 | 336 } |
| 661 | 337 } |
| 338 // reset mk and others(?) | |
| 339 data.marks = []; | |
| 340 data.zoomArea = MAX_ZOOMAREA; | |
| 341 // then reload | |
| 342 redisplay(data); | |
| 343 }, | |
| 647 | 344 |
| 661 | 345 // zoom by a given factor |
| 346 zoomBy : function (data, factor) { | |
| 347 zoomBy(data, factor); | |
| 348 }, | |
| 640 | 349 |
| 661 | 350 // zoom interactively |
| 351 zoomArea : function (data) { | |
| 352 zoomArea(data); | |
| 353 }, | |
| 643 | 354 |
| 661 | 355 // zoom out to full page |
| 356 zoomFull : function (data, mode) { | |
| 357 data.zoomArea = MAX_ZOOMAREA; | |
| 358 if (mode === 'width') { | |
| 359 data.dlOpts.fitwidth = 1; | |
| 360 delete data.dlOpts.fitheight; | |
| 361 } else if (mode === 'height') { | |
| 362 data.dlOpts.fitheight = 1; | |
| 363 delete data.dlOpts.fitwidth; | |
| 364 } else { | |
| 365 delete data.dlOpts.fitwidth; | |
| 366 delete data.dlOpts.fitheight; | |
| 367 } | |
| 368 redisplay(data); | |
| 369 }, | |
| 370 | |
| 371 // set a mark by clicking (or giving a position) | |
| 372 setMark : function (data, mpos) { | |
| 373 if (mpos == null) { | |
| 374 // interactive | |
| 375 setMark(data); | |
| 376 } else { | |
| 377 // use position | |
| 378 data.marks.push(pos); | |
| 656 | 379 redisplay(data); |
| 597 | 380 } |
| 661 | 381 }, |
| 382 | |
| 383 // remove the last mark | |
| 384 removeMark : function (data) { | |
| 385 data.marks.pop(); | |
| 386 redisplay(data); | |
| 387 }, | |
| 388 | |
| 389 // mirror the image | |
| 390 mirror : function (data, mode) { | |
| 391 var flags = data.scalerFlags; | |
| 392 if (mode === 'h') { | |
| 393 if (flags.hmir) { | |
| 394 delete flags.hmir; | |
| 395 } else { | |
| 396 flags.hmir = 1; | |
| 397 } | |
| 398 } else { | |
| 399 if (flags.vmir) { | |
| 400 delete flags.vmir; | |
| 401 } else { | |
| 402 flags.vmir = 1; | |
| 403 } | |
| 404 } | |
| 405 redisplay(data); | |
| 406 }, | |
| 643 | 407 |
| 661 | 408 // rotate the image |
| 409 rotate : function (data, angle) { | |
| 410 var rot = data.settings.rot; | |
| 411 if (angle == null) { | |
| 412 angle = window.prompt("Rotation angle:", rot); | |
| 413 } | |
| 414 data.settings.rot = angle; | |
| 415 redisplay(data); | |
| 416 }, | |
| 417 | |
| 418 // change brightness | |
| 419 brightness : function (data, factor) { | |
| 420 var brgt = data.settings.brgt; | |
| 421 if (factor == null) { | |
| 422 factor = window.prompt("Brightness (-255..255)", brgt); | |
| 423 } | |
| 424 data.settings.brgt = factor; | |
| 425 redisplay(data); | |
| 426 }, | |
| 427 | |
| 428 // change contrast | |
| 429 contrast : function (data, factor) { | |
| 430 var cont = data.settings.cont; | |
| 431 if (factor == null) { | |
| 432 factor = window.prompt("Contrast (-8, 8)", cont); | |
| 433 } | |
| 434 data.settings.cont = factor; | |
| 435 redisplay(data); | |
| 681 | 436 }, |
| 683 | 437 |
| 438 // display more (or less) button sets | |
| 439 morebuttons : function (data, more) { | |
| 689 | 440 var settings = data.settings; |
| 692 | 441 if (more == null) { |
| 696 | 442 // toggle more or less (only works for 2 sets) |
| 692 | 443 var maxbtns = settings.buttonSettings[settings.interactionMode].buttonSets.length; |
| 444 if (settings.visibleButtonSets >= maxbtns) { | |
| 445 more = '-1'; | |
| 446 } else { | |
| 447 more = '+1'; | |
| 448 } | |
| 449 } | |
| 683 | 450 if (more === '-1') { |
| 451 // remove set | |
| 690 | 452 var setIdx = settings.visibleButtonSets - 1; |
| 453 if (showButtons(data, false, setIdx, true)) { | |
| 454 settings.visibleButtonSets--; | |
| 455 } | |
| 683 | 456 } else { |
| 457 // add set | |
| 690 | 458 var setIdx = settings.visibleButtonSets; |
| 459 if (showButtons(data, true, setIdx, true)) { | |
| 460 settings.visibleButtonSets++; | |
| 683 | 461 } |
| 462 } | |
| 684 | 463 }, |
| 681 | 464 |
| 696 | 465 // reset image parameters to defaults |
| 681 | 466 reset : function (data) { |
| 467 var settings = data.settings; | |
| 468 var paramNames = settings.digilibParamNames; | |
| 469 var params = data.queryParams; | |
| 470 resetData(data); | |
| 471 // delete all digilib parameters | |
| 472 for (var i = 0; i < paramNames.length; i++) { | |
| 473 var paramName = paramNames[i]; | |
| 474 delete settings[paramName]; | |
| 475 }; | |
| 476 // fullscreen: restore only fn/pn parameters | |
| 477 if (settings.interactionMode === 'fullscreen') { | |
| 478 settings['fn'] = params.fn; | |
| 479 settings['pn'] = params.pn; | |
| 480 // embedded: restore original parameters | |
| 481 } else { | |
| 482 $.extend(settings, params); | |
| 483 }; | |
| 484 redisplay(data); | |
| 682 | 485 }, |
| 486 | |
| 696 | 487 // presents a reference url (returns value if noprompt) |
| 488 reference : function (data, noprompt) { | |
| 682 | 489 var settings = data.settings; |
| 490 var url; | |
| 491 if (settings.interactionMode === 'fullscreen') { | |
| 492 url = getDigilibUrl(data); | |
| 493 } else { | |
| 494 url = getScalerUrl(data); | |
| 495 }; | |
| 696 | 496 if (noprompt == null) { |
| 497 window.prompt("URL reference to the current view", url); | |
| 498 } | |
| 499 return url; | |
| 500 }, | |
| 501 | |
| 502 // set image quality | |
| 503 setquality : function (data, qual) { | |
| 504 var oldq = getQuality(data); | |
| 505 if (qual == null) { | |
| 506 qual = window.prompt("Image quality (0..2)", oldq); | |
| 507 } | |
| 508 qual = parseInt(qual, 10); | |
| 509 if (qual >= 0 && qual <= 2) { | |
| 510 setQuality(data, qual); | |
| 511 redisplay(data); | |
| 512 } | |
| 661 | 513 } |
| 598 | 514 }; |
| 597 | 515 |
| 601 | 516 // returns parameters from page url |
| 600 | 517 var parseQueryParams = function() { |
| 629 | 518 return parseQueryString(window.location.search.slice(1)); |
| 519 }; | |
| 648 | 520 |
| 629 | 521 // returns parameters from embedded img-element |
| 600 | 522 var parseImgParams = function($elem) { |
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523 var src = $elem.find('img').first().attr('src'); |
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524 if (!src) { |
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525 return null; |
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526 } |
| 600 | 527 var pos = src.indexOf('?'); |
| 528 var query = (pos < 0) ? '' : src.substring(pos + 1); | |
| 529 var scalerUrl = src.substring(0, pos); | |
| 620 | 530 var params = parseQueryString(query); |
| 531 params.scalerBaseUrl = scalerUrl; | |
| 532 return params; | |
| 629 | 533 }; |
| 600 | 534 |
| 601 | 535 // parses query parameter string into parameter object |
| 600 | 536 var parseQueryString = function(query) { |
| 694 | 537 var params = {}; |
| 538 if (query == null) return params; | |
| 600 | 539 var pairs = query.split("&"); |
| 629 | 540 //var keys = []; |
| 600 | 541 for (var i = 0; i < pairs.length; i++) { |
| 542 var pair = pairs[i].split("="); | |
| 543 if (pair.length === 2) { | |
| 620 | 544 params[pair[0]] = pair[1]; |
| 629 | 545 //keys.push(pair[0]); |
| 627 | 546 } |
| 629 | 547 } |
| 620 | 548 return params; |
| 629 | 549 }; |
| 661 | 550 |
| 636 | 551 // returns a query string from key names from a parameter hash (ignoring if the same value is in defaults) |
| 552 var getParamString = function (settings, keys, defaults) { | |
| 608 | 553 var paramString = ''; |
| 643 | 554 var nx = false; |
| 608 | 555 for (i = 0; i < keys.length; ++i) { |
| 556 var key = keys[i]; | |
| 656 | 557 if ((settings[key] != null) && ((defaults == null) || (settings[key] != defaults[key]))) { |
| 608 | 558 // first param gets no '&' |
| 643 | 559 if (nx) { |
| 560 paramString += '&'; | |
| 561 } else { | |
| 562 nx = true; | |
| 563 } | |
| 608 | 564 // add parm=val |
| 565 paramString += key + '=' + settings[key]; | |
| 636 | 566 } |
| 608 | 567 } |
| 568 return paramString; | |
| 624 | 569 }; |
| 570 | |
| 629 | 571 // returns URL and query string for Scaler |
| 572 var getScalerUrl = function (data) { | |
| 646 | 573 var settings = data.settings; |
| 645 | 574 if (settings.scalerBaseUrl == null) { |
| 575 alert("ERROR: URL of digilib Scaler servlet missing!"); | |
| 576 } | |
| 658 | 577 packParams(data); |
| 629 | 578 var keys = settings.scalerParamNames; |
| 636 | 579 var queryString = getParamString(settings, keys, defaults); |
| 629 | 580 var url = settings.scalerBaseUrl + '?' + queryString; |
| 581 return url; | |
| 582 }; | |
| 583 | |
| 584 // returns URL and query string for current digilib | |
|
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585 var getDigilibUrl = function (data) { |
| 636 | 586 packParams(data); |
| 629 | 587 var settings = data.settings; |
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588 var queryString = getParamString(settings, settings.digilibParamNames, defaults); |
| 629 | 589 var url = window.location.toString(); |
| 590 var pos = url.indexOf('?'); | |
| 591 var baseUrl = url.substring(0, pos); | |
| 592 var newurl = baseUrl + '?' + queryString; | |
| 593 return newurl; | |
| 594 }; | |
| 595 | |
| 648 | 596 // processes some parameters into objects and stuff |
| 624 | 597 var unpackParams = function (data) { |
| 598 var settings = data.settings; | |
| 629 | 599 // zoom area |
| 624 | 600 var zoomArea = geom.rectangle(settings.wx, settings.wy, settings.ww, settings.wh); |
| 636 | 601 data.zoomArea = zoomArea; |
| 629 | 602 // marks |
| 624 | 603 var marks = []; |
| 643 | 604 if (settings.mk) { |
| 605 var mk = settings.mk; | |
| 606 if (mk.indexOf(";") >= 0) { | |
| 607 var pa = mk.split(";"); // old format with ";" | |
| 608 } else { | |
| 609 var pa = mk.split(","); // new format | |
| 610 } | |
| 611 for (var i = 0; i < pa.length ; i++) { | |
| 612 var pos = pa[i].split("/"); | |
| 613 if (pos.length > 1) { | |
| 614 marks.push(geom.position(pos[0], pos[1])); | |
| 615 } | |
| 626 | 616 } |
| 624 | 617 } |
| 636 | 618 data.marks = marks; |
| 643 | 619 // mo (Scaler flags) |
| 620 var flags = {}; | |
| 621 if (settings.mo) { | |
| 622 var pa = settings.mo.split(","); | |
| 623 for (var i = 0; i < pa.length ; i++) { | |
| 624 flags[pa[i]] = pa[i]; | |
| 625 } | |
| 626 } | |
| 627 data.scalerFlags = flags; | |
| 628 // clop (digilib options) | |
| 629 var opts = {}; | |
| 694 | 630 if (jQuery.cookie) { |
| 631 // read from cookie | |
| 632 var ck = "digilib:fn:" + escape(settings.fn) + ":pn:" + settings.pn; | |
| 633 var cp = jQuery.cookie(ck); | |
| 634 console.debug("get cookie=", ck, " value=", cp); | |
| 635 // in query string format | |
| 636 opts = parseQueryString(cp); | |
| 637 } | |
| 638 /* read from parameter clop | |
| 639 * if (settings.clop) { | |
| 643 | 640 var pa = settings.clop.split(","); |
| 641 for (var i = 0; i < pa.length ; i++) { | |
| 642 opts[pa[i]] = pa[i]; | |
| 643 } | |
| 694 | 644 } */ |
| 643 | 645 data.dlOpts = opts; |
| 654 | 646 // birdview option |
| 694 | 647 if (opts.birdview != null) { |
| 648 settings.isBirdDivVisible = opts.birdview; | |
| 649 } | |
| 650 // visible button sets | |
| 651 if (opts.buttons != null) { | |
| 652 settings.visibleButtonSets = opts.buttons; | |
| 653 } | |
| 648 | 654 }; |
| 655 | |
| 624 | 656 // put objects back into parameters |
| 657 var packParams = function (data) { | |
| 658 var settings = data.settings; | |
| 629 | 659 // zoom area |
| 636 | 660 if (data.zoomArea) { |
| 640 | 661 settings.wx = cropFloat(data.zoomArea.x); |
| 662 settings.wy = cropFloat(data.zoomArea.y); | |
| 663 settings.ww = cropFloat(data.zoomArea.width); | |
| 664 settings.wh = cropFloat(data.zoomArea.height); | |
| 624 | 665 } |
| 629 | 666 // marks |
| 636 | 667 if (data.marks) { |
| 643 | 668 settings.mk = ''; |
| 636 | 669 for (var i = 0; i < data.marks.length; i++) { |
| 643 | 670 if (i) { |
| 671 settings.mk += ','; | |
| 672 } | |
| 673 settings.mk += cropFloat(data.marks[i].x).toString() + '/' + cropFloat(data.marks[i].y).toString(); | |
| 624 | 674 } |
| 643 | 675 } |
| 676 // Scaler flags | |
| 677 if (data.scalerFlags) { | |
| 678 var mo = ''; | |
| 679 for (var f in data.scalerFlags) { | |
| 680 if (mo) { | |
| 681 mo += ','; | |
| 682 } | |
| 683 mo += f; | |
| 684 } | |
| 685 settings.mo = mo; | |
| 686 } | |
| 694 | 687 // save digilib settings in options |
| 688 data.dlOpts.birdview = settings.isBirdDivVisible ? 1 : 0; | |
| 689 data.dlOpts.buttons = settings.visibleButtonSets; | |
| 681 | 690 |
| 694 | 691 // save digilib options in cookie |
| 643 | 692 if (data.dlOpts) { |
| 693 var clop = ''; | |
| 694 for (var o in data.dlOpts) { | |
| 695 if (clop) { | |
| 694 | 696 clop += '&'; |
| 697 } | |
| 698 clop += o + '=' + data.dlOpts[o]; | |
| 699 } | |
| 700 var ck = "digilib:fn:" + escape(settings.fn) + ":pn:" + settings.pn; | |
| 701 console.debug("set cookie=", ck, " value=", clop); | |
| 702 jQuery.cookie(ck, clop); | |
| 703 }; | |
| 704 /* store in parameter clop | |
| 705 * if (data.dlOpts) { | |
| 706 var clop = ''; | |
| 707 for (var o in data.dlOpts) { | |
| 708 if (clop) { | |
| 643 | 709 clop += ','; |
| 710 } | |
| 711 clop += o; | |
| 712 } | |
| 713 settings.clop = clop; | |
| 694 | 714 } */ |
| 624 | 715 }; |
| 648 | 716 |
| 681 | 717 // clear digilib data for reset |
| 718 var resetData = function (data) { | |
| 719 if (data.zoomArea) delete data.zoomArea; | |
| 720 if (data.marks) delete data.marks; | |
| 721 if (data.scalerFlags) delete data.scalerFlags; | |
| 722 if (data.dlOpts) delete data.dlOpts; | |
| 723 }; | |
| 724 | |
| 615 | 725 // (re)load the img from a new scaler URL |
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726 var redisplay = function (data) { |
| 629 | 727 var settings = data.settings; |
| 728 if (settings.interactionMode === 'fullscreen') { | |
| 729 // update location.href (browser URL) in fullscreen mode | |
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730 var url = getDigilibUrl(data); |
| 629 | 731 var history = window.history; |
| 732 if (typeof(history.pushState) === 'function') { | |
| 733 console.debug("we could modify history, but we don't..."); | |
| 734 } | |
| 735 window.location = url; | |
| 736 } else { | |
| 737 // embedded mode -- just change img src | |
| 738 var url = getScalerUrl(data); | |
| 739 data.$img.attr('src', url); | |
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740 // and update bird's eye view |
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741 //if (settings.isBirdDivVisible) { |
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742 // renderBirdZoom(data); |
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743 //} |
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744 }; |
| 615 | 745 }; |
| 746 | |
| 655 | 747 // returns maximum size for scaler img in fullscreen mode |
| 748 var getFullscreenImgSize = function($elem) { | |
| 749 var $win = $(window); | |
| 750 var winH = $win.height(); | |
| 751 var winW = $win.width(); | |
| 752 // TODO: account for borders? | |
| 753 return geom.size(winW, winH); | |
| 754 }; | |
| 755 | |
| 601 | 756 // creates HTML structure for digilib in elem |
| 620 | 757 var setupScalerDiv = function (data) { |
| 758 var settings = data.settings; | |
| 640 | 759 var $elem = data.$elem; |
| 679 | 760 var $img, scalerUrl; |
| 761 // fullscreen | |
| 601 | 762 if (settings.interactionMode === 'fullscreen') { |
| 602 | 763 var imgSize = getFullscreenImgSize($elem); |
| 643 | 764 // fitwidth/height omits destination height/width |
| 765 if (data.dlOpts['fitheight'] == null) { | |
| 766 settings.dw = imgSize.width; | |
| 679 | 767 }; |
| 643 | 768 if (data.dlOpts['fitwidth'] == null) { |
| 769 settings.dh = imgSize.height; | |
| 679 | 770 }; |
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771 $img = $('<img/>'); |
| 679 | 772 scalerUrl = getScalerUrl(data); |
| 773 // embedded mode -- try to keep img tag | |
| 602 | 774 } else { |
| 616 | 775 $img = $elem.find('img'); |
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776 if ($img.length > 0) { |
| 679 | 777 console.debug("img detach:", $img); |
| 778 scalerUrl = $img.attr('src'); | |
|
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779 $img.detach(); |
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780 } else { |
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781 $img = $('<img/>'); |
| 679 | 782 scalerUrl = getScalerUrl(data); |
| 783 }; | |
| 601 | 784 } |
|
606
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785 // create new html |
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786 $elem.empty(); // TODO: should we keep stuff for customization? |
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787 var $scaler = $('<div class="scaler"/>'); |
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788 $elem.append($scaler); |
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789 $scaler.append($img); |
| 615 | 790 $img.addClass('pic'); |
| 642 | 791 data.$scaler = $scaler; |
| 629 | 792 data.$img = $img; |
| 680 | 793 // setup image load handler before setting the src attribute (IE bug) |
| 794 $img.load(scalerImgLoadedHandler(data)); | |
| 795 $img.attr('src', scalerUrl); | |
| 601 | 796 }; |
| 608 | 797 |
| 603 | 798 // creates HTML structure for buttons in elem |
| 690 | 799 var createButtons = function (data, buttonSetIdx) { |
| 640 | 800 var $elem = data.$elem; |
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801 var settings = data.settings; |
| 658 | 802 var mode = settings.interactionMode; |
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803 var buttonSettings = settings.buttonSettings[mode]; |
| 675 | 804 var buttonGroup = buttonSettings.buttonSets[buttonSetIdx]; |
| 683 | 805 if (buttonGroup == null) { |
| 806 // no buttons here | |
| 807 return; | |
| 808 } | |
| 809 var $buttonsDiv = $('<div class="buttons"/>'); | |
| 675 | 810 var buttonNames = buttonSettings[buttonGroup]; |
| 811 for (var i = 0; i < buttonNames.length; i++) { | |
| 812 var buttonName = buttonNames[i]; | |
| 813 var buttonConfig = settings.buttons[buttonName]; | |
| 658 | 814 // construct the button html |
| 815 var $button = $('<div class="button"></div>'); | |
| 816 var $a = $('<a/>'); | |
| 817 var $img = $('<img class="button"/>'); | |
| 818 $buttonsDiv.append($button); | |
| 819 $button.append($a); | |
| 820 $a.append($img); | |
| 821 // add attributes and bindings | |
| 822 $button.attr('title', buttonConfig.tooltip); | |
| 675 | 823 $button.addClass('button-' + buttonName); |
| 658 | 824 // create handler for the buttons |
| 825 $a.bind('click.digilib', (function () { | |
| 826 // we create a new closure to capture the value of action | |
| 827 var action = buttonConfig.onclick; | |
| 828 if ($.isArray(action)) { | |
| 829 // the handler function calls digilib with action and parameters | |
| 830 return function (evt) { | |
| 831 console.debug('click action=', action, ' evt=', evt); | |
| 832 $elem.digilib.apply($elem, action); | |
| 833 return false; | |
| 834 }; | |
| 835 } else { | |
| 836 // the handler function calls digilib with action | |
| 837 return function (evt) { | |
| 838 console.debug('click action=', action, ' evt=', evt); | |
| 839 $elem.digilib(action); | |
| 840 return false; | |
| 841 }; | |
| 842 } | |
| 843 })()); | |
| 844 $img.attr('src', buttonSettings.imagePath + buttonConfig.img); | |
| 683 | 845 } |
| 655 | 846 // make buttons div scroll if too large for window |
| 847 if ($buttonsDiv.height() > $(window).height() - 10) { | |
| 848 $buttonsDiv.css('position', 'absolute'); | |
| 849 } | |
| 690 | 850 // buttons hidden at first |
| 851 $buttonsDiv.hide(); | |
| 852 $elem.append($buttonsDiv); | |
| 675 | 853 if (data.$buttonSets == null) { |
| 690 | 854 // first button set |
| 675 | 855 data.$buttonSets = [$buttonsDiv]; |
| 856 } else { | |
| 683 | 857 $elem.append($buttonsDiv); |
| 675 | 858 data.$buttonSets[buttonSetIdx] = $buttonsDiv; |
| 859 } | |
| 605 | 860 return $buttonsDiv; |
| 603 | 861 }; |
| 608 | 862 |
| 863 // creates HTML structure for the bird's eye view in elem | |
| 631 | 864 var setupBirdDiv = function (data) { |
| 640 | 865 var $elem = data.$elem; |
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866 var settings = data.settings; |
| 608 | 867 // use only the relevant parameters |
| 868 var keys = ['fn','pn','dw','dh']; | |
| 667 | 869 var birdDivOptions = { |
| 870 dw : settings.birdDivWidth, | |
| 871 dh : settings.birdDivHeight | |
| 872 }; | |
| 873 var birdSettings = $.extend({}, settings, birdDivOptions); | |
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874 var birdUrl = settings.scalerBaseUrl + '?' + getParamString(birdSettings, keys); |
| 608 | 875 // the bird's eye div |
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876 var $birdDiv = $('<div class="birdview" style="display:none"/>'); |
| 608 | 877 // the detail indicator frame |
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878 var $birdZoom = $('<div class="birdZoom" style="display:none; position:absolute; background-color:transparent;"/>'); |
| 608 | 879 // the small image |
| 880 var $birdImg = $('<img class="birdimg"/>'); | |
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881 $elem.append($birdDiv); |
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882 $birdDiv.append($birdZoom); |
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883 $birdDiv.append($birdImg); |
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884 $birdZoom.css(data.settings.birdIndicatorStyle); |
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885 data.$birdDiv = $birdDiv; |
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886 data.$birdZoom = $birdZoom; |
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887 data.$birdImg = $birdImg; |
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888 $birdImg.load(birdImgLoadedHandler(data)); |
| 608 | 889 $birdImg.attr('src', birdUrl); |
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890 if (data.settings.isBirdDivVisible) { |
| 680 | 891 $birdDiv.show(); |
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892 }; |
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893 birdZoom(data); |
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894 }; |
| 608 | 895 |
| 618 | 896 // creates HTML structure for the about view in elem |
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897 var setupAboutDiv = function (data) { |
| 640 | 898 var $elem = data.$elem; |
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899 var settings = data.settings; |
| 618 | 900 var $aboutDiv = $('<div class="about" style="display:none"/>'); |
| 609 | 901 var $header = $('<p>Digilib Graphic Viewer</p>'); |
| 902 var $link = $('<a/>'); | |
| 903 var $logo = $('<img class="logo" title="digilib"/>'); | |
| 904 var $content = $('<p/>'); | |
| 905 $elem.append($aboutDiv); | |
| 906 $aboutDiv.append($header); | |
| 907 $aboutDiv.append($link); | |
| 908 $aboutDiv.append($content); | |
| 909 $link.append($logo); | |
| 910 $logo.attr('src', settings.logoUrl); | |
| 628 | 911 $link.attr('href', settings.homeUrl); |
| 609 | 912 $content.text('Version: ' + settings.version); |
| 628 | 913 // click hides |
| 642 | 914 $aboutDiv.bind('click.digilib', function () { |
| 639 | 915 settings.isAboutDivVisible = showDiv(settings.isAboutDivVisible, $aboutDiv, 0); |
| 642 | 916 return false; |
| 917 }); | |
| 628 | 918 data.$aboutDiv = $aboutDiv; |
| 627 | 919 }; |
| 920 | |
| 628 | 921 // shows some window e.g. 'about' (toggle visibility if show is null) |
| 922 var showDiv = function (isVisible, $div, show) { | |
| 638 | 923 if (show == null) { |
| 628 | 924 // toggle visibility |
| 925 isVisible = !isVisible; | |
| 926 } else { | |
| 927 // set visibility | |
| 928 isVisible = show; | |
| 929 } | |
| 930 if (isVisible) { | |
| 931 $div.fadeIn(); | |
| 932 } else { | |
| 933 $div.fadeOut(); | |
| 934 } | |
| 935 return isVisible; | |
| 627 | 936 }; |
| 609 | 937 |
| 690 | 938 // display more (or less) button sets |
| 939 var showButtons = function (data, more, setIdx, animated) { | |
| 940 if (more) { | |
| 941 // add set | |
| 942 var $otherSets = data.$elem.find('div.buttons:visible'); | |
| 943 var $set; | |
| 944 if (data.$buttonSets && data.$buttonSets[setIdx]) { | |
| 945 // set exists | |
| 946 $set = data.$buttonSets[setIdx]; | |
| 947 } else { | |
| 948 $set = createButtons(data, setIdx); | |
| 949 } | |
| 950 if ($set == null) return false; | |
| 951 var btnWidth = $set.width(); | |
| 952 // move remaining sets left and show new set | |
| 953 if (animated) { | |
| 954 $otherSets.animate({left : '-='+btnWidth+'px'}, 'fast', | |
| 955 function () {$set.show();}); | |
| 956 } else { | |
| 694 | 957 var oldpos = $otherSets.position(); |
| 958 if (oldpos) { | |
| 959 $otherSets.css({left : oldpos.left-btnWidth+'px'}); | |
| 960 } | |
| 690 | 961 $set.show(); |
| 962 } | |
| 963 } else { | |
| 964 // remove set | |
| 965 var $set = data.$buttonSets[setIdx]; | |
| 966 if ($set == null) return false; | |
| 967 var btnWidth = $set.width(); | |
| 968 // hide last set | |
| 969 $set.hide(); | |
| 970 // take remaining sets and move right | |
| 971 var $otherSets = data.$elem.find('div.buttons:visible'); | |
| 972 if (animated) { | |
| 973 $otherSets.animate({left : '+='+btnWidth+'px'}, 'fast'); | |
| 974 } else { | |
| 975 $otherSets.css({left : '+='+btnWidth+'px'}); | |
| 976 } | |
| 977 } | |
| 978 return true; | |
| 979 }; | |
| 980 | |
|
651
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|
981 // create Transform from area and $img |
| 668 | 982 var getImgTrafo = function ($img, area, rot, hmir, vmir) { |
|
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983 var picrect = geom.rectangle($img); |
|
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984 var trafo = geom.transform(); |
| 668 | 985 // move zoom area offset to center |
|
651
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|
986 trafo.concat(trafo.getTranslation(geom.position(-area.x, -area.y))); |
| 668 | 987 // scale zoom area size to [1,1] |
|
651
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|
988 trafo.concat(trafo.getScale(geom.size(1/area.width, 1/area.height))); |
| 668 | 989 // rotate and mirror (around transformed image center i.e. [0.5,0.5]) |
| 990 if (rot || hmir || vmir) { | |
| 991 // move [0.5,0.5] to center | |
| 992 trafo.concat(trafo.getTranslation(geom.position(-0.5, -0.5))); | |
| 993 if (hmir) { | |
| 994 // mirror about center | |
| 995 trafo.concat(trafo.getMirror('y')); | |
| 996 } | |
| 997 if (vmir) { | |
| 998 // mirror about center | |
| 999 trafo.concat(trafo.getMirror('x')); | |
| 1000 } | |
| 1001 if (rot) { | |
| 1002 // rotate around center | |
| 1003 trafo.concat(trafo.getRotation(parseFloat(rot))); | |
| 1004 } | |
| 1005 // move back | |
| 1006 trafo.concat(trafo.getTranslation(geom.position(0.5, 0.5))); | |
|
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1007 } |
|
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|
1008 // scale to screen position and size |
|
651
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1009 trafo.concat(trafo.getScale(picrect)); |
|
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1010 trafo.concat(trafo.getTranslation(picrect)); |
|
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1011 return trafo; |
| 648 | 1012 }; |
|
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1013 |
|
606
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|
1014 // returns function for load event of scaler img |
| 629 | 1015 var scalerImgLoadedHandler = function (data) { |
| 1016 var $img = data.$img; | |
| 626 | 1017 return function () { |
| 620 | 1018 console.debug("img loaded! this=", this, " data=", data); |
| 1019 // create Transform from current area and picsize | |
| 668 | 1020 data.imgTrafo = getImgTrafo($img, data.zoomArea, |
| 1021 data.settings.rot, data.scalerFlags.hmir, data.scalerFlags.vmir); | |
| 679 | 1022 console.debug("imgTrafo=", data.imgTrafo); |
| 620 | 1023 // display marks |
| 626 | 1024 renderMarks(data); |
|
688
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1025 // TODO: digilib.showArrows(); // show arrow overlays for zoom navigation |
|
671
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1026 var $birdImg = data.$birdImg; |
| 698 | 1027 // should the birdview adapt to mirror or rotation? decision: No. :-) |
|
663
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1028 if ($birdImg) { |
|
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1029 $birdImg.triggerHandler('load'); |
|
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1030 }; |
| 698 | 1031 // TODO: the actual moving code |
| 1032 if (!isFullArea(data.zoomArea)) { | |
| 1033 setupZoomDrag(data); | |
| 1034 }; | |
|
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1035 }; |
|
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|
1036 }; |
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1037 |
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1038 // returns function for load event of bird's eye view img |
|
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1039 var birdImgLoadedHandler = function (data) { |
|
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1040 var $img = data.$birdImg; |
|
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1041 return function () { |
|
670
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|
1042 console.debug("birdimg loaded! this=", this, " data=", data); |
|
651
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1043 // create Transform from current area and picsize |
|
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1044 data.birdTrafo = getImgTrafo($img, MAX_ZOOMAREA); |
| 661 | 1045 // display red indicator around zoomarea |
|
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1046 renderbirdZoom(data); |
|
606
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1047 }; |
|
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|
1048 }; |
| 626 | 1049 |
| 1050 // place marks on the image | |
| 1051 var renderMarks = function (data) { | |
| 640 | 1052 var $elem = data.$elem; |
| 636 | 1053 var marks = data.marks; |
| 642 | 1054 // TODO: clear marks first(?) |
| 626 | 1055 for (var i = 0; i < marks.length; i++) { |
| 1056 var mark = marks[i]; | |
| 636 | 1057 if (data.zoomArea.containsPosition(mark)) { |
| 626 | 1058 var mpos = data.imgTrafo.transform(mark); |
|
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1059 console.debug("renderMarks: mpos=",mpos); |
| 626 | 1060 // create mark |
| 1061 var html = '<div class="mark">'+(i+1)+'</div>'; | |
| 1062 var $mark = $(html); | |
| 1063 $elem.append($mark); | |
| 647 | 1064 $mark.offset({left : mpos.x, top : mpos.y}); |
| 626 | 1065 } |
| 1066 } | |
| 1067 }; | |
| 648 | 1068 |
|
670
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1069 // show zoom area indicator on bird's eye view |
|
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1070 var renderbirdZoom = function (data) { |
|
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1071 var $birdZoom = data.$birdZoom; |
| 652 | 1072 var zoomArea = data.zoomArea; |
| 1073 var indRect = data.birdTrafo.transform(zoomArea); | |
|
663
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1074 var coords = { |
|
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1075 left : indRect.x-2, // acount for frame width |
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1076 top : indRect.y-2, |
|
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1077 width : indRect.width, |
|
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1078 height: indRect.height |
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|
1079 }; |
|
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1080 var normalSize = isFullArea(zoomArea); |
|
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1081 if (data.settings.interactionMode === 'fullscreen') { |
|
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1082 // no animation for fullscreen |
|
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1083 if (normalSize) return $birdZoom.hide(); |
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1084 $birdZoom.width(coords.width); |
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1085 $birdZoom.height(coords.height); |
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|
1086 $birdZoom.offset(coords); |
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|
1087 $birdZoom.show(); |
|
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|
1088 return; |
|
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|
1089 }; |
|
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|
1090 // nice animation for embedded mode :-) |
|
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1091 var makeCompleteFunction = function($birdZoom, normalSize) { |
|
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1092 return function() { |
|
671
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1093 if (normalSize) $birdZoom.hide(); |
|
665
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|
1094 }; |
|
663
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|
1095 }; |
|
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|
1096 var opts = { |
|
671
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1097 'complete' : makeCompleteFunction($birdZoom, normalSize) |
|
663
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|
1098 }; |
|
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1099 if (!normalSize && $birdZoom.css('display') === 'none') $birdZoom.show(); |
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|
1100 $birdZoom.animate(coords, opts); |
|
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|
1101 }; |
| 652 | 1102 |
| 640 | 1103 // zooms by the given factor |
| 636 | 1104 var zoomBy = function(data, factor) { |
| 1105 var area = data.zoomArea; | |
| 1106 var newarea = area.copy(); | |
| 1107 // scale | |
| 1108 newarea.width /= factor; | |
| 1109 newarea.height /= factor; | |
| 1110 // and recenter | |
| 1111 newarea.x -= 0.5 * (newarea.width - area.width); | |
| 1112 newarea.y -= 0.5 * (newarea.height - area.height); | |
| 1113 newarea = MAX_ZOOMAREA.fit(newarea); | |
| 1114 data.zoomArea = newarea; | |
|
637
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|
1115 redisplay(data); |
| 636 | 1116 }; |
| 1117 | |
| 640 | 1118 // add a mark where clicked |
| 1119 var setMark = function (data) { | |
| 642 | 1120 var $scaler = data.$scaler; |
| 640 | 1121 // start event capturing |
| 642 | 1122 $scaler.one('click.digilib', function (evt) { |
| 640 | 1123 // event handler adding a new mark |
|
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1124 var mpos = geom.position(evt); |
| 640 | 1125 var pos = data.imgTrafo.invtransform(mpos); |
| 1126 data.marks.push(pos); | |
| 1127 redisplay(data); | |
| 642 | 1128 return false; // do we even get here? |
| 640 | 1129 }); |
| 1130 }; | |
| 661 | 1131 |
| 647 | 1132 var zoomArea = function(data) { |
| 1133 $elem = data.$elem; | |
| 1134 $scaler = data.$scaler; | |
| 1135 var pt1, pt2; | |
| 1136 var $zoomDiv = $('<div class="zoomrect" style="display:none"/>'); | |
| 1137 $elem.append($zoomDiv); | |
| 661 | 1138 $zoomDiv.css(data.settings.zoomrectStyle); |
| 647 | 1139 var picRect = geom.rectangle($scaler); |
| 1140 // FIX ME: is there a way to query the border width from CSS info? | |
| 1141 // rect.x -= 2; // account for overlay borders | |
| 1142 // rect.y -= 2; | |
| 1143 | |
| 1144 var zoomStart = function (evt) { | |
| 1145 pt1 = geom.position(evt); | |
| 1146 // setup and show zoom div | |
| 1147 //moveElement(zoomdiv, Rectangle(pt1.x, pt1.y, 0, 0)); | |
| 1148 $zoomDiv.offset({left : pt1.x, top : pt1.y}); | |
| 661 | 1149 $zoomDiv.width(0).height(0); |
| 647 | 1150 $zoomDiv.show(); |
| 1151 // register events | |
| 1152 $elem.bind("mousemove.digilib", zoomMove); | |
| 1153 $elem.bind("mouseup.digilib", zoomEnd); | |
| 1154 return false; | |
| 1155 }; | |
| 661 | 1156 |
| 647 | 1157 // mouseup handler: end moving |
| 1158 var zoomEnd = function (evt) { | |
| 1159 pt2 = geom.position(evt); | |
| 1160 // assume a click and continue if the area is too small | |
| 1161 var clickRect = geom.rectangle(pt1, pt2); | |
| 1162 if (clickRect.getArea() <= 5) { | |
| 1163 return false; | |
| 1164 } | |
| 1165 // hide zoom div | |
| 1166 $zoomDiv.remove(); | |
| 1167 // unregister events | |
| 1168 $elem.unbind("mousemove.digilib", zoomMove); | |
| 1169 $elem.unbind("mouseup.digilib", zoomEnd); | |
| 1170 // clip and transform | |
| 1171 clickRect.clipTo(picRect); | |
| 1172 var area = data.imgTrafo.invtransform(clickRect); | |
| 1173 data.zoomArea = area; | |
| 1174 // zoomed is always fit | |
| 1175 data.settings.ws = 1; | |
| 1176 redisplay(data); | |
| 1177 return false; | |
| 1178 }; | |
| 661 | 1179 |
| 647 | 1180 // mouse move handler |
| 1181 var zoomMove = function (evt) { | |
| 1182 pt2 = geom.position(evt); | |
| 1183 var rect = geom.rectangle(pt1, pt2); | |
| 1184 rect.clipTo(picRect); | |
| 1185 // update zoom div | |
|
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|
1186 rect.adjustDiv($zoomDiv); |
| 647 | 1187 return false; |
| 1188 }; | |
| 661 | 1189 |
| 647 | 1190 // bind start zoom handler |
| 1191 $scaler.one('mousedown.digilib', zoomStart); | |
| 1192 }; | |
| 640 | 1193 |
|
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1194 var birdZoom = function(data) { |
|
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|
1195 var $birdImg = data.$birdImg; |
|
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1196 var $birdZoom = data.$birdZoom; |
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|
1197 var startPos, newRect, birdImgRect, birdZoomRect; |
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|
1198 |
|
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|
1199 var birdZoomMove = function(evt) { |
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|
1200 // mousemove handler: drag |
|
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|
1201 var pos = geom.position(evt); |
|
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|
1202 var dx = pos.x - startPos.x; |
|
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|
1203 var dy = pos.y - startPos.y; |
|
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|
1204 // move birdZoom div, keeping size |
|
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|
1205 newRect = geom.rectangle( |
|
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|
1206 birdZoomRect.x + dx, |
|
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|
1207 birdZoomRect.y + dy, |
|
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|
1208 birdZoomRect.width, |
|
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|
1209 birdZoomRect.height |
|
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|
1210 ); |
|
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|
1211 // stay within birdimage |
|
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1212 newRect.stayInside(birdImgRect); |
|
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|
1213 $birdZoom.offset({left : newRect.x, top : newRect.y}); |
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|
1214 // $birdZoom.show(); |
|
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|
1215 return false; |
|
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|
1216 }; |
|
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|
1217 |
|
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|
1218 var birdZoomEndDrag = function(evt) { |
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1219 // mouseup handler: reload page |
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1220 var settings = data.settings; |
| 673 | 1221 $(document).unbind("mousemove.digilib", birdZoomMove); |
| 1222 $(document).unbind("mouseup.digilib", birdZoomEndDrag); | |
| 1223 $birdZoom.unbind("mousemove.digilib", birdZoomMove); | |
| 1224 $birdZoom.unbind("mouseup.digilib", birdZoomEndDrag); | |
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1225 if (newRect == null) { // no movement happened |
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1226 startPos = birdZoomRect.getCenter(); |
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1227 birdZoomMove(evt); // set center to click position |
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1228 }; |
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1229 if (data.zoomArea) { |
| 672 | 1230 // should always be true |
| 1231 var x = cropFloat((newRect.x - birdImgRect.x + 2) / birdImgRect.width); | |
| 1232 var y = cropFloat((newRect.y - birdImgRect.y + 2) / birdImgRect.height); | |
| 1233 data.zoomArea.x = x; | |
| 1234 data.zoomArea.y = y; | |
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1235 }; |
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1236 settings.ws = 1; // zoomed is always fit |
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1237 redisplay(data); |
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1238 return false; |
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1239 }; |
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1240 |
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1241 var birdZoomStartDrag = function(evt) { |
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1242 // mousedown handler: start dragging bird zoom to a new position |
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1243 startPos = geom.position(evt); |
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1244 birdImgRect = geom.rectangle($birdImg); |
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1245 birdZoomRect = geom.rectangle($birdZoom); |
| 673 | 1246 $(document).bind("mousemove.digilib", birdZoomMove); |
| 1247 $(document).bind("mouseup.digilib", birdZoomEndDrag); | |
| 1248 $birdZoom.bind("mousemove.digilib", birdZoomMove); | |
| 1249 $birdZoom.bind("mouseup.digilib", birdZoomEndDrag); | |
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1250 return false; |
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1251 }; |
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1252 |
| 674 | 1253 $birdImg.bind("mousedown.digilib", birdZoomStartDrag); |
| 1254 $birdZoom.bind("mousedown.digilib", birdZoomStartDrag); | |
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1255 }; |
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1256 |
| 698 | 1257 var setupZoomDrag = function(data) { |
| 1258 // setup handlers for dragging the zoomed image | |
| 1259 var pt1, pt2; | |
| 1260 var dx = 0; | |
| 1261 var dy = 0; | |
| 1262 var $elem = data.$elem; | |
| 1263 var $scaler = data.$scaler; | |
| 1264 var $img = data.$img; | |
| 699 | 1265 var $bg = $('<div class="bgDrag" style="display:none; position:absolute"/>'); |
| 698 | 1266 $scaler.before($bg); // set as background |
| 1267 | |
| 1268 var dragStart = function (evt) { | |
| 1269 // drag the image and load a new detail on mouse up | |
| 1270 // useless if not zoomed | |
| 1271 if (isFullArea(data.zoomArea)) return false; | |
| 1272 if(evt.preventDefault) evt.preventDefault(); // no Firefox drag and drop (NEEDED?) | |
| 1273 pt1 = geom.position(evt); | |
| 1274 $imgRect = geom.rectangle($img); | |
| 1275 $imgRect.adjustDiv($bg); // set background size | |
| 1276 // hide the scaler image, show it as background of div instead | |
| 1277 $bg.css({ | |
| 1278 'background-image' : 'url(' + $img.attr('src') + ')', | |
| 1279 'background-repeat' : 'no-repeat', | |
| 699 | 1280 'background-position' : 'top left', |
| 698 | 1281 'cursor' : 'move' |
| 1282 }); | |
| 1283 $img.hide(); | |
| 1284 $bg.show(); | |
| 1285 $(document).bind("mousemove.digilib", dragMove); | |
| 1286 $(document).bind("mouseup.digilib", dragEnd); | |
| 1287 window.focus(); | |
| 1288 }; | |
| 1289 | |
| 1290 var dragMove = function (evt) { | |
| 1291 // mousemove handler: drag | |
| 1292 var pos = geom.position(evt); | |
| 1293 if(evt.preventDefault) evt.preventDefault(); // no Firefox drag and drop (NEEDED?) | |
| 1294 dx = pos.x - pt1.x; | |
| 1295 dy = pos.y - pt1.y; | |
| 1296 // move the background image to the new position | |
| 1297 $bg.css({ | |
| 1298 'background-position' : dx + "px " + dy + "px" | |
| 1299 }); | |
| 1300 return false; | |
| 1301 }; | |
| 1302 | |
| 1303 var dragEnd = function (evt) { | |
| 1304 // mouseup handler: reload digilib | |
| 1305 $bg.css({ | |
| 1306 'cursor' : 'default' | |
| 1307 }); | |
| 1308 $(document).unbind("mousemove.digilib", dragMove); | |
| 1309 $(document).unbind("mouseup.digilib", dragEnd); | |
| 1310 // calculate relative offset | |
| 1311 var x = -dx / $img.width(); | |
| 1312 var y = -dy / $img.height(); | |
| 1313 if (dx == 0 && dy == 0) | |
| 1314 return false // no movement | |
| 1315 // reload with scaler image showing the new ausschnitt | |
| 699 | 1316 $bg.hide(); |
| 1317 $img.show(); | |
| 698 | 1318 // digilib.moveBy(x, y); |
| 1319 return false; | |
| 1320 }; | |
| 1321 | |
| 1322 $scaler.bind("mousedown.digilib", dragStart); | |
| 1323 }; | |
| 1324 | |
| 696 | 1325 // get image quality as a number (0..2) |
| 1326 var getQuality = function (data) { | |
| 1327 var flags = data.scalerFlags; | |
| 1328 var q = flags.q2 || flags.q1 || 'q0'; // assume q0 as default | |
| 1329 return parseInt(q[1], 10); | |
| 699 | 1330 }; |
| 696 | 1331 |
| 1332 // set image quality as a number (0..2) | |
| 1333 var setQuality = function (data, qual) { | |
| 1334 var flags = data.scalerFlags; | |
| 1335 // clear flags | |
| 1336 for (var i = 0; i < 3; ++i) { | |
| 1337 delete flags['q'+i]; | |
| 1338 } | |
| 1339 flags['q'+qual] = 'q'+qual; | |
| 699 | 1340 }; |
| 696 | 1341 |
| 643 | 1342 // sets a key to a value (relative values with +/- if relative=true) |
| 1343 var setNumValue = function(settings, key, value) { | |
| 1344 if (isNumber(value)) return settings[key] = value; | |
| 1345 var sign = value.substring(0,1); | |
| 1346 if (sign === '+' || sign === '-') { | |
| 1347 if (settings[key] == null) { | |
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1348 // this isn't perfect but still... |
| 643 | 1349 settings[key] = 0; |
| 1350 } | |
| 1351 settings[key] = parseFloat(settings[key]) + parseFloat(value); | |
| 1352 } else { | |
| 1353 settings[key] = value; | |
| 1354 } | |
| 1355 return settings[key]; | |
| 1356 }; | |
| 648 | 1357 |
| 1358 // auxiliary function (from old dllib.js) | |
| 652 | 1359 isFullArea = function(area) { |
| 1360 return (area.width === 1.0) && (area.height === 1.0); | |
| 648 | 1361 }; |
| 1362 | |
| 634 | 1363 // auxiliary function (from Douglas Crockford, A.10) |
| 1364 var isNumber = function isNumber(value) { | |
| 1365 return typeof value === 'number' && isFinite(value); | |
| 1366 }; | |
| 648 | 1367 |
| 624 | 1368 // auxiliary function to crop senseless precision |
| 1369 var cropFloat = function (x) { | |
| 630 | 1370 return parseInt(10000 * x, 10) / 10000; |
| 624 | 1371 }; |
| 648 | 1372 |
| 685 | 1373 // fallback for console.log calls |
| 1374 if (customConsole) { | |
| 1375 var logFunction = function(type) { | |
| 1376 return function(){ | |
| 1377 var $debug = $('#debug'); // debug div | |
| 1378 if (!$debug) return; | |
| 1379 var args = Array.prototype.slice.call(arguments); | |
| 1380 var argtext = args.join(' '); | |
| 1381 var $logDiv = $('<div/>'); | |
| 1382 $logDiv.addClass(type); | |
| 1383 $logDiv.text(argtext); | |
| 1384 $debug.append($logDiv); | |
| 1385 }; | |
| 1386 }; | |
| 1387 console.log = logFunction('_log'); | |
| 1388 console.debug = logFunction('_debug'); | |
| 1389 console.error = logFunction('_error'); | |
| 1390 }; | |
| 1391 | |
| 598 | 1392 // hook plugin into jquery |
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1393 $.fn.digilib = function(action) { |
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1394 if (actions[action]) { |
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1395 // call action on this with the remaining arguments (inserting data as first argument) |
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1396 var $elem = $(this); |
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1397 var data = $elem.data('digilib'); |
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1398 var args = Array.prototype.slice.call(arguments, 1); |
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1399 args.unshift(data); |
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1400 return actions[action].apply(this, args); |
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1401 } else if (typeof(action) === 'object' || !action) { |
| 627 | 1402 // call init on this |
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1403 return actions.init.apply(this, arguments); |
| 598 | 1404 } else { |
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1405 $.error( 'action ' + action + ' does not exist on jQuery.digilib' ); |
| 598 | 1406 } |
| 1407 }; | |
| 685 | 1408 |
| 597 | 1409 })(jQuery); |