Mercurial > hg > digilib
annotate client/digitallibrary/jquery/jquery.digilib.js @ 730:98a405711289 jquery
setup zoomdrag even when image is not initially zoomed
| author | hertzhaft |
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| date | Wed, 02 Feb 2011 00:41:16 +0100 |
| parents | 0cdec312b783 |
| children | 3a7fbdc39f6c |
| rev | line source |
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1 /* Copyright (c) 2011 Martin Raspe, Robert Casties |
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2 |
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3 This program is free software: you can redistribute it and/or modify |
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4 it under the terms of the GNU Lesser General Public License as published by |
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5 the Free Software Foundation, either version 2 of the License, or |
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6 (at your option) any later version. |
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7 |
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8 This program is distributed in the hope that it will be useful, |
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9 but WITHOUT ANY WARRANTY; without even the implied warranty of |
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10 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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11 GNU Lesser General Public License for more details. |
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12 |
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13 You should have received a copy of the GNU Lesser General Public License |
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14 along with this program. If not, see <http://www.gnu.org/licenses/>. |
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15 |
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16 Authors: |
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17 Martin Raspe, Robert Casties, 11.1.2011 |
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18 */ |
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19 |
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20 /** |
| 597 | 21 * digilib jQuery plugin |
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22 * |
| 597 | 23 */ |
| 648 | 24 |
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25 /*jslint browser: true, debug: true, forin: true */ |
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26 |
| 629 | 27 // fallback for console.log calls |
| 28 if (typeof(console) === 'undefined') { | |
| 29 var console = { | |
| 685 | 30 log : function(){}, |
| 31 debug : function(){}, | |
| 32 error : function(){} | |
| 33 }; | |
| 34 var customConsole = true; | |
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35 } |
| 597 | 36 |
| 37 (function($) { | |
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38 var buttons = { |
| 603 | 39 reference : { |
| 682 | 40 onclick : "reference", |
| 603 | 41 tooltip : "get a reference URL", |
| 42 img : "reference.png" | |
| 43 }, | |
| 44 zoomin : { | |
| 636 | 45 onclick : ["zoomBy", 1.4], |
| 603 | 46 tooltip : "zoom in", |
| 47 img : "zoom-in.png" | |
| 48 }, | |
| 49 zoomout : { | |
| 636 | 50 onclick : ["zoomBy", 0.7], |
| 603 | 51 tooltip : "zoom out", |
| 52 img : "zoom-out.png" | |
| 53 }, | |
| 54 zoomarea : { | |
| 647 | 55 onclick : "zoomArea", |
| 603 | 56 tooltip : "zoom area", |
| 57 img : "zoom-area.png" | |
| 58 }, | |
| 59 zoomfull : { | |
| 643 | 60 onclick : "zoomFull", |
| 603 | 61 tooltip : "view the whole image", |
| 62 img : "zoom-full.png" | |
| 63 }, | |
| 64 pagewidth : { | |
| 643 | 65 onclick : ["zoomFull", "width"], |
| 603 | 66 tooltip : "page width", |
| 67 img : "pagewidth.png" | |
| 68 }, | |
| 69 back : { | |
| 616 | 70 onclick : ["gotoPage", "-1"], |
| 603 | 71 tooltip : "goto previous image", |
| 72 img : "back.png" | |
| 73 }, | |
| 74 fwd : { | |
| 616 | 75 onclick : ["gotoPage", "+1"], |
| 603 | 76 tooltip : "goto next image", |
| 77 img : "fwd.png" | |
| 78 }, | |
| 79 page : { | |
| 709 | 80 onclick : "gotoPage", |
| 81 tooltip : "goto image number", | |
| 603 | 82 img : "page.png" |
| 83 }, | |
| 84 bird : { | |
| 628 | 85 onclick : "showBirdDiv", |
| 603 | 86 tooltip : "show bird's eye view", |
| 87 img : "birds-eye.png" | |
| 88 }, | |
| 89 help : { | |
| 628 | 90 onclick : "showAboutDiv", |
| 603 | 91 tooltip : "about Digilib", |
| 92 img : "help.png" | |
| 93 }, | |
| 94 reset : { | |
| 681 | 95 onclick : "reset", |
| 603 | 96 tooltip : "reset image", |
| 97 img : "reset.png" | |
| 98 }, | |
| 99 mark : { | |
| 640 | 100 onclick : "setMark", |
| 603 | 101 tooltip : "set a mark", |
| 102 img : "mark.png" | |
| 103 }, | |
| 104 delmark : { | |
| 643 | 105 onclick : "removeMark", |
| 603 | 106 tooltip : "delete the last mark", |
| 107 img : "delmark.png" | |
| 108 }, | |
| 109 hmir : { | |
| 654 | 110 onclick : ["mirror", "h"], |
| 603 | 111 tooltip : "mirror horizontally", |
| 112 img : "mirror-horizontal.png" | |
| 113 }, | |
| 114 vmir : { | |
| 654 | 115 onclick : ["mirror", "v"], |
| 603 | 116 tooltip : "mirror vertically", |
| 117 img : "mirror-vertical.png" | |
| 118 }, | |
| 119 rot : { | |
| 656 | 120 onclick : "rotate", |
| 603 | 121 tooltip : "rotate image", |
| 122 img : "rotate.png" | |
| 123 }, | |
| 124 brgt : { | |
| 656 | 125 onclick : "brightness", |
| 603 | 126 tooltip : "set brightness", |
| 127 img : "brightness.png" | |
| 128 }, | |
| 129 cont : { | |
| 656 | 130 onclick : "contrast", |
| 603 | 131 tooltip : "set contrast", |
| 132 img : "contrast.png" | |
| 133 }, | |
| 134 rgb : { | |
| 135 onclick : "javascript:setParamWin('rgb', '...')", | |
| 136 tooltip : "set rgb values", | |
| 137 img : "rgb.png" | |
| 138 }, | |
| 139 quality : { | |
| 696 | 140 onclick : "setquality", |
| 603 | 141 tooltip : "set image quality", |
| 142 img : "quality.png" | |
| 143 }, | |
| 144 size : { | |
| 145 onclick : "javascript:toggleSizeMenu()", | |
| 146 tooltip : "set page size", | |
| 147 img : "size.png" | |
| 148 }, | |
| 149 calibrationx : { | |
| 150 onclick : "javascript:calibrate('x')", | |
| 151 tooltip : "calibrate screen x-ratio", | |
| 152 img : "calibration-x.png" | |
| 153 }, | |
| 154 scale : { | |
| 155 onclick : "javascript:toggleScaleMenu()", | |
| 156 tooltip : "change image scale", | |
| 157 img : "original-size.png" | |
| 158 }, | |
| 692 | 159 toggleoptions : { |
| 160 onclick : "morebuttons", | |
| 161 tooltip : "more options", | |
| 162 img : "options.png" | |
| 163 }, | |
| 683 | 164 moreoptions : { |
| 165 onclick : ["morebuttons", "+1"], | |
| 166 tooltip : "more options", | |
| 167 img : "options.png" | |
| 168 }, | |
| 169 lessoptions : { | |
| 170 onclick : ["morebuttons", "-1"], | |
| 171 tooltip : "less options", | |
| 603 | 172 img : "options.png" |
| 173 }, | |
| 174 SEP : { | |
| 175 img : "sep.png" | |
| 176 } | |
| 177 }; | |
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178 |
| 598 | 179 var defaults = { |
| 609 | 180 // version of this script |
| 628 | 181 'version' : 'jquery.digilib.js 0.9', |
| 609 | 182 // logo url |
| 183 'logoUrl' : '../img/digilib-logo-text1.png', | |
| 628 | 184 // homepage url (behind logo) |
| 185 'homeUrl' : 'http://digilib.berlios.de', | |
| 603 | 186 // base URL to Scaler servlet |
| 645 | 187 'scalerBaseUrl' : null, |
| 603 | 188 // list of Scaler parameters |
| 620 | 189 'scalerParamNames' : ['fn','pn','dw','dh','ww','wh','wx','wy','ws','mo', |
| 190 'rot','cont','brgt','rgbm','rgba','ddpi','ddpix','ddpiy'], | |
| 191 // Scaler parameter defaults | |
| 636 | 192 'pn' : 1, |
| 620 | 193 'ww' : 1.0, |
| 194 'wh' : 1.0, | |
| 195 'wx' : 0.0, | |
| 196 'wy' : 0.0, | |
| 197 'ws' : 1.0, | |
| 636 | 198 'mo' : '', |
| 199 'rot' : 0, | |
| 200 'cont' : 0, | |
| 201 'brgt' : 0, | |
| 202 'rgbm' : '0/0/0', | |
| 203 'rgba' : '0/0/0', | |
| 204 'ddpi' : null, | |
| 205 'ddpix' : null, | |
| 206 'ddpiy' : null, | |
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207 // list of digilib parameters |
| 643 | 208 'digilibParamNames' : ['fn','pn','ww','wh','wx','wy','ws','mo','rot','cont','brgt','rgbm','rgba','mk','clop'], |
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209 // digilib parameter defaults |
| 636 | 210 'mk' : '', |
| 643 | 211 'clop' : '', |
| 636 | 212 // mode of operation: |
| 213 // fullscreen = take parameters from page URL, keep state in page URL | |
| 214 // embedded = take parameters from Javascript options, keep state inside object | |
| 603 | 215 'interactionMode' : 'fullscreen', |
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216 // buttons |
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217 'buttons' : buttons, |
| 661 | 218 // defaults for digilib buttons |
| 658 | 219 'buttonSettings' : { |
| 220 'fullscreen' : { | |
| 661 | 221 // path to button images (must end with a slash) |
| 658 | 222 'imagePath' : 'img/fullscreen/', |
| 714 | 223 'standardSet' : ["reference","zoomin","zoomout","zoomarea","zoomfull","pagewidth","back","fwd","page","bird","help","reset","toggleoptions"], |
| 224 'specialSet' : ["mark","delmark","hmir","vmir","rot","brgt","cont","rgb","quality","size","calibrationx","scale","toggleoptions"], | |
| 675 | 225 'buttonSets' : ['standardSet', 'specialSet'] |
| 658 | 226 }, |
| 227 'embedded' : { | |
| 228 'imagePath' : 'img/embedded/16/', | |
| 714 | 229 'standardSet' : ["reference","zoomin","zoomout","zoomarea","zoomfull","back","fwd","page","bird","help","reset","toggleoptions"], |
| 230 'specialSet' : ["hmir","vmir","rot","brgt","cont","rgb","quality","size","toggleoptions"], | |
| 675 | 231 'buttonSets' : ['standardSet', 'specialSet'] |
| 658 | 232 } |
| 690 | 233 }, |
| 234 // number of visible button groups | |
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235 'visibleButtonSets' : 1, |
| 609 | 236 // is birdView shown? |
| 237 'isBirdDivVisible' : false, | |
| 661 | 238 // dimensions of bird's eye div |
| 667 | 239 'birdDivWidth' : 200, |
| 240 'birdDivHeight' : 200, | |
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241 // parameters used by bird's eye div |
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242 'birdDivParams' : ['fn','pn','dw','dh'], |
| 661 | 243 // style of the zoom area indicator in the bird's eye div |
| 652 | 244 'birdIndicatorStyle' : {'border' : '2px solid #ff0000' }, |
| 661 | 245 // style of zoom area "rubber band" |
| 246 'zoomrectStyle' : {'border' : '2px solid #ff0000' }, | |
| 609 | 247 // is the "about" window shown? |
| 248 'isAboutDivVisible' : false | |
| 249 | |
| 603 | 250 }; |
| 648 | 251 |
| 601 | 252 // affine geometry classes |
| 253 var geom = dlGeometry(); | |
| 648 | 254 |
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255 var FULL_AREA = geom.rectangle(0, 0, 1, 1); |
| 648 | 256 |
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257 var actions = { |
| 661 | 258 // init: digilib initialization |
| 259 init : function(options) { | |
| 260 // settings for this digilib instance are merged from defaults and options | |
| 261 var settings = $.extend({}, defaults, options); | |
| 262 var isFullscreen = settings.interactionMode === 'fullscreen'; | |
| 263 var queryParams = {}; | |
| 264 if (isFullscreen) { | |
| 265 queryParams = parseQueryParams(); | |
| 266 // check scalerBaseUrl | |
| 267 if (settings.scalerBaseUrl == null) { | |
| 268 // try the host this came from | |
| 269 var h = window.location.host; | |
| 270 if (window.location.host) { | |
| 271 var url = window.location.href; | |
| 272 // assume the page lives in [webapp]/jquery/ | |
| 273 var pos = url.indexOf('jquery/'); | |
| 274 if (pos > 0) { | |
| 275 settings.scalerBaseUrl = url.substring(0, pos) + 'servlet/Scaler'; | |
| 645 | 276 } |
| 277 } | |
| 629 | 278 } |
| 661 | 279 } |
| 280 return this.each(function() { | |
| 281 var $elem = $(this); | |
| 282 var data = $elem.data('digilib'); | |
| 681 | 283 var params, elemSettings; |
| 661 | 284 // if the plugin hasn't been initialized yet |
| 285 if (!data) { | |
| 286 // merge query parameters | |
| 287 if (isFullscreen) { | |
| 681 | 288 params = queryParams; |
| 661 | 289 } else { |
| 681 | 290 params = parseImgParams($elem); |
| 720 | 291 if (jQuery.cookie) { |
| 292 // retrieve params from cookie | |
| 293 var ck = "digilib-embed:fn:" + escape(params.fn) + ":pn:" + (params.pn || '1'); | |
| 294 var cs = jQuery.cookie(ck); | |
| 295 console.debug("get cookie=", ck, " value=", cs); | |
| 296 if (cs) { | |
| 297 var cp = parseQueryString(cs); | |
| 721 | 298 // ignore fn and pn from cookie TODO: should we keep pn? |
| 299 delete cp.fn; | |
| 300 delete cp.pn; | |
| 301 jQuery.extend(params, cp); | |
| 720 | 302 } |
| 303 } | |
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304 } |
| 661 | 305 // store $(this) element in the settings |
| 721 | 306 elemSettings = jQuery.extend({}, settings, params); |
| 690 | 307 data = { |
| 661 | 308 $elem : $elem, |
| 309 settings : elemSettings, | |
| 681 | 310 queryParams : params |
| 661 | 311 }; |
| 312 // store in data element | |
| 313 $elem.data('digilib', data); | |
| 314 } | |
| 315 unpackParams(data); | |
| 675 | 316 // create HTML structure for scaler |
| 661 | 317 setupScalerDiv(data); |
| 690 | 318 // add buttons |
| 319 for (var i = 0; i < elemSettings.visibleButtonSets; ++i) { | |
| 320 showButtons(data, true, i); | |
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321 } |
| 661 | 322 // bird's eye view creation |
| 703 | 323 if (elemSettings.isBirdDivVisible) { |
| 631 | 324 setupBirdDiv(data); |
| 716 | 325 data.$birdDiv.show(); |
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326 } |
| 661 | 327 // about window creation - TODO: could be deferred? restrict to only one item? |
| 328 setupAboutDiv(data); | |
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329 // drag zoom area around in scaler div |
| 700 | 330 setupZoomDrag(data); |
| 661 | 331 }); |
| 332 }, | |
| 333 | |
| 334 // destroy: clean up digilib | |
| 335 destroy : function(data) { | |
| 336 return this.each(function(){ | |
| 337 var $elem = $(this); | |
| 338 $(window).unbind('.digilib'); // unbind all digilibs(?) | |
| 339 data.digilib.remove(); | |
| 340 $elem.removeData('digilib'); | |
| 341 }); | |
| 342 }, | |
| 343 | |
| 344 // show or hide the 'about' window | |
| 345 showAboutDiv : function(data, show) { | |
| 346 data.settings.isAboutDivVisible = showDiv(data.settings.isAboutDivVisible, data.$aboutDiv, show); | |
| 347 }, | |
| 648 | 348 |
| 661 | 349 // event handler: toggles the visibility of the bird's eye window |
| 350 showBirdDiv : function (data, show) { | |
| 719 | 351 var settings = data.settings; |
| 661 | 352 if (data.$birdDiv == null) { |
| 353 // no bird div -> create | |
| 354 setupBirdDiv(data); | |
| 355 } | |
| 719 | 356 settings.isBirdDivVisible = showDiv(settings.isBirdDivVisible, data.$birdDiv, show); |
| 357 updateBirdDiv(data); | |
| 716 | 358 storeOptions(data); |
| 359 // data.$birdImg.triggerHandler('load'); // TODO: we shouldn't do that | |
| 661 | 360 }, |
| 361 | |
| 362 // goto given page nr (+/-: relative) | |
| 363 gotoPage : function (data, pageNr) { | |
| 364 var settings = data.settings; | |
| 365 var oldpn = settings.pn; | |
| 709 | 366 if (pageNr == null) { |
| 367 pageNr = window.prompt("Goto page number", oldpn); | |
| 368 } | |
| 661 | 369 var pn = setNumValue(settings, "pn", pageNr); |
| 370 if (pn == null) return false; // nothing happened | |
| 371 if (pn < 1) { | |
| 372 alert("no such page (page number too low)"); | |
| 373 settings.pn = oldpn; | |
| 374 return false; | |
| 375 } | |
| 376 if (settings.pt) { | |
| 377 if (pn > settings.pt) { | |
| 378 alert("no such page (page number too high)"); | |
| 616 | 379 settings.pn = oldpn; |
| 380 return false; | |
| 627 | 381 } |
| 661 | 382 } |
| 383 // reset mk and others(?) | |
| 384 data.marks = []; | |
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385 data.zoomArea = FULL_AREA; |
| 661 | 386 // then reload |
| 387 redisplay(data); | |
| 388 }, | |
| 647 | 389 |
| 661 | 390 // zoom by a given factor |
| 391 zoomBy : function (data, factor) { | |
| 392 zoomBy(data, factor); | |
| 393 }, | |
| 640 | 394 |
| 661 | 395 // zoom interactively |
| 396 zoomArea : function (data) { | |
| 397 zoomArea(data); | |
| 398 }, | |
| 643 | 399 |
| 661 | 400 // zoom out to full page |
| 401 zoomFull : function (data, mode) { | |
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402 data.zoomArea = FULL_AREA; |
| 661 | 403 if (mode === 'width') { |
| 404 data.dlOpts.fitwidth = 1; | |
| 405 delete data.dlOpts.fitheight; | |
| 406 } else if (mode === 'height') { | |
| 407 data.dlOpts.fitheight = 1; | |
| 408 delete data.dlOpts.fitwidth; | |
| 409 } else { | |
| 410 delete data.dlOpts.fitwidth; | |
| 411 delete data.dlOpts.fitheight; | |
| 412 } | |
| 413 redisplay(data); | |
| 414 }, | |
| 415 | |
| 416 // set a mark by clicking (or giving a position) | |
| 417 setMark : function (data, mpos) { | |
| 418 if (mpos == null) { | |
| 419 // interactive | |
| 420 setMark(data); | |
| 421 } else { | |
| 422 // use position | |
| 423 data.marks.push(pos); | |
| 656 | 424 redisplay(data); |
| 597 | 425 } |
| 661 | 426 }, |
| 427 | |
| 428 // remove the last mark | |
| 429 removeMark : function (data) { | |
| 430 data.marks.pop(); | |
| 431 redisplay(data); | |
| 432 }, | |
| 433 | |
| 434 // mirror the image | |
| 435 mirror : function (data, mode) { | |
| 436 var flags = data.scalerFlags; | |
| 437 if (mode === 'h') { | |
| 438 if (flags.hmir) { | |
| 439 delete flags.hmir; | |
| 440 } else { | |
| 441 flags.hmir = 1; | |
| 442 } | |
| 443 } else { | |
| 444 if (flags.vmir) { | |
| 445 delete flags.vmir; | |
| 446 } else { | |
| 447 flags.vmir = 1; | |
| 448 } | |
| 449 } | |
| 450 redisplay(data); | |
| 451 }, | |
| 643 | 452 |
| 661 | 453 // rotate the image |
| 454 rotate : function (data, angle) { | |
| 455 var rot = data.settings.rot; | |
| 456 if (angle == null) { | |
| 457 angle = window.prompt("Rotation angle:", rot); | |
| 458 } | |
| 459 data.settings.rot = angle; | |
| 460 redisplay(data); | |
| 461 }, | |
| 462 | |
| 463 // change brightness | |
| 464 brightness : function (data, factor) { | |
| 465 var brgt = data.settings.brgt; | |
| 466 if (factor == null) { | |
| 467 factor = window.prompt("Brightness (-255..255)", brgt); | |
| 468 } | |
| 469 data.settings.brgt = factor; | |
| 470 redisplay(data); | |
| 471 }, | |
| 472 | |
| 473 // change contrast | |
| 474 contrast : function (data, factor) { | |
| 475 var cont = data.settings.cont; | |
| 476 if (factor == null) { | |
| 477 factor = window.prompt("Contrast (-8, 8)", cont); | |
| 478 } | |
| 479 data.settings.cont = factor; | |
| 480 redisplay(data); | |
| 681 | 481 }, |
| 703 | 482 |
| 683 | 483 // display more (or less) button sets |
| 484 morebuttons : function (data, more) { | |
| 689 | 485 var settings = data.settings; |
| 692 | 486 if (more == null) { |
| 696 | 487 // toggle more or less (only works for 2 sets) |
| 692 | 488 var maxbtns = settings.buttonSettings[settings.interactionMode].buttonSets.length; |
| 489 if (settings.visibleButtonSets >= maxbtns) { | |
| 490 more = '-1'; | |
| 491 } else { | |
| 492 more = '+1'; | |
| 493 } | |
| 494 } | |
| 683 | 495 if (more === '-1') { |
| 496 // remove set | |
| 690 | 497 var setIdx = settings.visibleButtonSets - 1; |
| 498 if (showButtons(data, false, setIdx, true)) { | |
| 499 settings.visibleButtonSets--; | |
| 500 } | |
| 683 | 501 } else { |
| 502 // add set | |
| 690 | 503 var setIdx = settings.visibleButtonSets; |
| 504 if (showButtons(data, true, setIdx, true)) { | |
| 505 settings.visibleButtonSets++; | |
| 683 | 506 } |
| 507 } | |
| 716 | 508 // persist setting |
| 509 storeOptions(data); | |
| 684 | 510 }, |
| 681 | 511 |
| 696 | 512 // reset image parameters to defaults |
| 681 | 513 reset : function (data) { |
| 514 var settings = data.settings; | |
| 515 var paramNames = settings.digilibParamNames; | |
| 516 var params = data.queryParams; | |
| 517 // delete all digilib parameters | |
| 518 for (var i = 0; i < paramNames.length; i++) { | |
| 519 var paramName = paramNames[i]; | |
| 520 delete settings[paramName]; | |
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521 } |
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522 settings.fn = params.fn || ''; // no default defined |
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523 settings.pn = params.pn || defaults.pn; |
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524 settings.dw = params.dw; |
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525 settings.dh = params.dh; |
| 702 | 526 settings.isBirdDivVisible = false; |
| 527 settings.visibleButtonSets = 1; | |
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528 // resets zoomArea, marks, scalerflags |
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529 data.zoomArea = FULL_AREA; |
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530 data.marks = []; |
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531 data.scalerFlags = {}; |
| 705 | 532 delete data.dlOpts.fitwidth; |
| 533 delete data.dlOpts.fitheight; | |
| 681 | 534 redisplay(data); |
| 682 | 535 }, |
| 536 | |
| 696 | 537 // presents a reference url (returns value if noprompt) |
| 538 reference : function (data, noprompt) { | |
| 682 | 539 var settings = data.settings; |
| 540 var url; | |
| 541 if (settings.interactionMode === 'fullscreen') { | |
| 542 url = getDigilibUrl(data); | |
| 543 } else { | |
| 544 url = getScalerUrl(data); | |
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545 } |
| 696 | 546 if (noprompt == null) { |
| 547 window.prompt("URL reference to the current view", url); | |
| 548 } | |
| 549 return url; | |
| 550 }, | |
| 703 | 551 |
| 696 | 552 // set image quality |
| 553 setquality : function (data, qual) { | |
| 554 var oldq = getQuality(data); | |
| 555 if (qual == null) { | |
| 556 qual = window.prompt("Image quality (0..2)", oldq); | |
| 557 } | |
| 558 qual = parseInt(qual, 10); | |
| 559 if (qual >= 0 && qual <= 2) { | |
| 560 setQuality(data, qual); | |
| 561 redisplay(data); | |
| 562 } | |
| 661 | 563 } |
| 598 | 564 }; |
| 597 | 565 |
| 601 | 566 // returns parameters from page url |
| 600 | 567 var parseQueryParams = function() { |
| 629 | 568 return parseQueryString(window.location.search.slice(1)); |
| 569 }; | |
| 648 | 570 |
| 629 | 571 // returns parameters from embedded img-element |
| 600 | 572 var parseImgParams = function($elem) { |
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573 var src = $elem.find('img').first().attr('src'); |
| 703 | 574 if (!src) return null; |
| 600 | 575 var pos = src.indexOf('?'); |
| 576 var query = (pos < 0) ? '' : src.substring(pos + 1); | |
| 577 var scalerUrl = src.substring(0, pos); | |
| 620 | 578 var params = parseQueryString(query); |
| 579 params.scalerBaseUrl = scalerUrl; | |
| 580 return params; | |
| 629 | 581 }; |
| 600 | 582 |
| 601 | 583 // parses query parameter string into parameter object |
| 600 | 584 var parseQueryString = function(query) { |
| 694 | 585 var params = {}; |
| 586 if (query == null) return params; | |
| 600 | 587 var pairs = query.split("&"); |
| 629 | 588 //var keys = []; |
| 600 | 589 for (var i = 0; i < pairs.length; i++) { |
| 590 var pair = pairs[i].split("="); | |
| 591 if (pair.length === 2) { | |
| 620 | 592 params[pair[0]] = pair[1]; |
| 629 | 593 //keys.push(pair[0]); |
| 627 | 594 } |
| 629 | 595 } |
| 620 | 596 return params; |
| 629 | 597 }; |
| 661 | 598 |
| 636 | 599 // returns a query string from key names from a parameter hash (ignoring if the same value is in defaults) |
| 600 var getParamString = function (settings, keys, defaults) { | |
| 608 | 601 var paramString = ''; |
| 643 | 602 var nx = false; |
| 608 | 603 for (i = 0; i < keys.length; ++i) { |
| 604 var key = keys[i]; | |
| 656 | 605 if ((settings[key] != null) && ((defaults == null) || (settings[key] != defaults[key]))) { |
| 608 | 606 // first param gets no '&' |
| 643 | 607 if (nx) { |
| 608 paramString += '&'; | |
| 609 } else { | |
| 610 nx = true; | |
| 611 } | |
| 608 | 612 // add parm=val |
| 613 paramString += key + '=' + settings[key]; | |
| 636 | 614 } |
| 608 | 615 } |
| 616 return paramString; | |
| 624 | 617 }; |
| 618 | |
| 629 | 619 // returns URL and query string for Scaler |
| 620 var getScalerUrl = function (data) { | |
| 646 | 621 var settings = data.settings; |
| 645 | 622 if (settings.scalerBaseUrl == null) { |
| 623 alert("ERROR: URL of digilib Scaler servlet missing!"); | |
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624 } |
| 658 | 625 packParams(data); |
| 629 | 626 var keys = settings.scalerParamNames; |
| 636 | 627 var queryString = getParamString(settings, keys, defaults); |
| 629 | 628 var url = settings.scalerBaseUrl + '?' + queryString; |
| 629 return url; | |
| 630 }; | |
| 631 | |
| 632 // returns URL and query string for current digilib | |
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633 var getDigilibUrl = function (data) { |
| 636 | 634 packParams(data); |
| 629 | 635 var settings = data.settings; |
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636 var queryString = getParamString(settings, settings.digilibParamNames, defaults); |
| 629 | 637 var url = window.location.toString(); |
| 638 var pos = url.indexOf('?'); | |
| 639 var baseUrl = url.substring(0, pos); | |
| 640 var newurl = baseUrl + '?' + queryString; | |
| 641 return newurl; | |
| 642 }; | |
| 643 | |
| 648 | 644 // processes some parameters into objects and stuff |
| 624 | 645 var unpackParams = function (data) { |
| 646 var settings = data.settings; | |
| 629 | 647 // zoom area |
| 624 | 648 var zoomArea = geom.rectangle(settings.wx, settings.wy, settings.ww, settings.wh); |
| 636 | 649 data.zoomArea = zoomArea; |
| 629 | 650 // marks |
| 624 | 651 var marks = []; |
| 643 | 652 if (settings.mk) { |
| 653 var mk = settings.mk; | |
| 654 if (mk.indexOf(";") >= 0) { | |
| 655 var pa = mk.split(";"); // old format with ";" | |
| 656 } else { | |
| 657 var pa = mk.split(","); // new format | |
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658 } |
| 643 | 659 for (var i = 0; i < pa.length ; i++) { |
| 660 var pos = pa[i].split("/"); | |
| 661 if (pos.length > 1) { | |
| 662 marks.push(geom.position(pos[0], pos[1])); | |
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663 } |
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664 } |
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665 } |
| 636 | 666 data.marks = marks; |
| 643 | 667 // mo (Scaler flags) |
| 668 var flags = {}; | |
| 669 if (settings.mo) { | |
| 670 var pa = settings.mo.split(","); | |
| 671 for (var i = 0; i < pa.length ; i++) { | |
| 672 flags[pa[i]] = pa[i]; | |
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673 } |
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674 } |
| 643 | 675 data.scalerFlags = flags; |
| 716 | 676 retrieveOptions(data); |
| 648 | 677 }; |
| 678 | |
| 624 | 679 // put objects back into parameters |
| 680 var packParams = function (data) { | |
| 681 var settings = data.settings; | |
| 629 | 682 // zoom area |
| 636 | 683 if (data.zoomArea) { |
| 640 | 684 settings.wx = cropFloat(data.zoomArea.x); |
| 685 settings.wy = cropFloat(data.zoomArea.y); | |
| 686 settings.ww = cropFloat(data.zoomArea.width); | |
| 687 settings.wh = cropFloat(data.zoomArea.height); | |
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688 } |
| 629 | 689 // marks |
| 636 | 690 if (data.marks) { |
| 643 | 691 settings.mk = ''; |
| 636 | 692 for (var i = 0; i < data.marks.length; i++) { |
| 643 | 693 if (i) { |
| 694 settings.mk += ','; | |
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695 } |
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696 settings.mk += cropFloat(data.marks[i].x).toString() + |
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697 '/' + cropFloat(data.marks[i].y).toString(); |
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698 } |
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699 } |
| 643 | 700 // Scaler flags |
| 701 if (data.scalerFlags) { | |
| 702 var mo = ''; | |
| 703 for (var f in data.scalerFlags) { | |
| 704 if (mo) { | |
| 705 mo += ','; | |
| 706 } | |
| 707 mo += f; | |
| 708 } | |
| 709 settings.mo = mo; | |
| 710 } | |
| 703 | 711 // user interface options |
| 716 | 712 storeOptions(data); |
| 702 | 713 }; |
| 681 | 714 |
| 716 | 715 var storeOptions = function (data) { |
| 694 | 716 // save digilib options in cookie |
| 702 | 717 // TODO: in embedded mode this is not called |
| 694 | 718 /* store in parameter clop |
| 719 * if (data.dlOpts) { | |
| 720 var clop = ''; | |
| 721 for (var o in data.dlOpts) { | |
| 722 if (clop) { | |
| 643 | 723 clop += ','; |
| 724 } | |
| 725 clop += o; | |
| 726 } | |
| 727 settings.clop = clop; | |
| 694 | 728 } */ |
| 702 | 729 var settings = data.settings; |
| 730 if (data.dlOpts) { | |
| 731 // save digilib settings in options | |
| 732 data.dlOpts.birdview = settings.isBirdDivVisible ? 1 : 0; | |
| 733 data.dlOpts.buttons = settings.visibleButtonSets; | |
| 734 var clop = ''; | |
| 735 for (var o in data.dlOpts) { | |
| 736 if (clop) { | |
| 737 clop += '&'; | |
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738 } |
| 702 | 739 clop += o + '=' + data.dlOpts[o]; |
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740 } |
| 702 | 741 if (jQuery.cookie) { |
| 742 var ck = "digilib:fn:" + escape(settings.fn) + ":pn:" + settings.pn; | |
| 743 console.debug("set cookie=", ck, " value=", clop); | |
| 744 jQuery.cookie(ck, clop); | |
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745 } |
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746 } |
| 720 | 747 if (settings.interactionMode !== 'fullscreen' && jQuery.cookie) { |
| 748 // store normal parameters in cookie for embedded mode | |
| 749 var qs = getParamString(settings, settings.digilibParamNames, defaults); | |
| 750 var ck = "digilib-embed:fn:" + escape(settings.fn) + ":pn:" + settings.pn; | |
| 751 console.debug("set cookie=", ck, " value=", qs); | |
| 752 jQuery.cookie(ck, qs); | |
| 753 } | |
| 624 | 754 }; |
| 648 | 755 |
| 716 | 756 var retrieveOptions = function (data) { |
| 702 | 757 // clop (digilib options) |
| 758 var opts = {}; | |
| 759 var settings = data.settings; | |
| 760 if (jQuery.cookie) { | |
| 761 /* read from parameter clop | |
| 762 * if (settings.clop) { | |
| 763 var pa = settings.clop.split(","); | |
| 764 for (var i = 0; i < pa.length ; i++) { | |
| 765 opts[pa[i]] = pa[i]; | |
| 766 } | |
| 767 } */ | |
| 768 // read from cookie | |
| 769 var ck = "digilib:fn:" + escape(settings.fn) + ":pn:" + settings.pn; | |
| 770 var cp = jQuery.cookie(ck); | |
| 771 console.debug("get cookie=", ck, " value=", cp); | |
| 772 // in query string format | |
| 773 opts = parseQueryString(cp); | |
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774 } |
| 702 | 775 data.dlOpts = opts; |
| 776 // birdview option | |
| 777 if (opts.birdview != null) { | |
| 778 settings.isBirdDivVisible = opts.birdview === '1'; | |
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779 } |
| 702 | 780 // visible button sets |
| 781 if (opts.buttons != null) { | |
| 782 settings.visibleButtonSets = opts.buttons; | |
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783 } |
| 704 | 784 }; |
| 702 | 785 |
| 615 | 786 // (re)load the img from a new scaler URL |
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787 var redisplay = function (data) { |
| 629 | 788 var settings = data.settings; |
| 789 if (settings.interactionMode === 'fullscreen') { | |
| 790 // update location.href (browser URL) in fullscreen mode | |
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791 var url = getDigilibUrl(data); |
| 629 | 792 var history = window.history; |
| 793 if (typeof(history.pushState) === 'function') { | |
| 794 console.debug("we could modify history, but we don't..."); | |
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795 } |
| 629 | 796 window.location = url; |
| 797 } else { | |
| 798 // embedded mode -- just change img src | |
| 799 var url = getScalerUrl(data); | |
| 800 data.$img.attr('src', url); | |
| 719 | 801 // redisplay bird img |
| 802 updateBirdDiv(data); | |
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803 } |
| 615 | 804 }; |
| 805 | |
| 655 | 806 // returns maximum size for scaler img in fullscreen mode |
| 807 var getFullscreenImgSize = function($elem) { | |
| 808 var $win = $(window); | |
| 809 var winH = $win.height(); | |
| 810 var winW = $win.width(); | |
| 811 // TODO: account for borders? | |
| 812 return geom.size(winW, winH); | |
| 813 }; | |
| 814 | |
| 601 | 815 // creates HTML structure for digilib in elem |
| 620 | 816 var setupScalerDiv = function (data) { |
| 817 var settings = data.settings; | |
| 640 | 818 var $elem = data.$elem; |
| 718 | 819 $elem.addClass('digilib'); |
| 721 | 820 var $img; |
| 821 var scalerUrl; | |
| 601 | 822 if (settings.interactionMode === 'fullscreen') { |
| 721 | 823 // fullscreen |
| 718 | 824 $elem.addClass('dl_fullscreen'); |
| 602 | 825 var imgSize = getFullscreenImgSize($elem); |
| 643 | 826 // fitwidth/height omits destination height/width |
| 721 | 827 if (data.dlOpts.fitheight == null) { |
| 643 | 828 settings.dw = imgSize.width; |
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829 } |
| 721 | 830 if (data.dlOpts.fitwidth == null) { |
| 643 | 831 settings.dh = imgSize.height; |
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832 } |
| 679 | 833 scalerUrl = getScalerUrl(data); |
| 721 | 834 $img = $('<img/>'); |
| 602 | 835 } else { |
| 721 | 836 // embedded mode -- try to keep img tag |
| 718 | 837 $elem.addClass('dl_embedded'); |
| 721 | 838 scalerUrl = getScalerUrl(data); |
| 616 | 839 $img = $elem.find('img'); |
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840 if ($img.length > 0) { |
| 721 | 841 oldUrl = $img.attr('src'); |
| 842 if (oldUrl === scalerUrl) { | |
| 843 console.debug("img detach:", $img); | |
| 844 $img.detach(); | |
| 845 } else { | |
| 846 $img = $('<img/>'); | |
| 847 } | |
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848 } else { |
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849 $img = $('<img/>'); |
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850 } |
| 601 | 851 } |
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852 // create new html |
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853 $elem.empty(); // TODO: should we keep stuff for customization? |
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854 var $scaler = $('<div class="scaler"/>'); |
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855 $elem.append($scaler); |
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856 $scaler.append($img); |
| 615 | 857 $img.addClass('pic'); |
| 642 | 858 data.$scaler = $scaler; |
| 629 | 859 data.$img = $img; |
| 680 | 860 // setup image load handler before setting the src attribute (IE bug) |
| 861 $img.load(scalerImgLoadedHandler(data)); | |
| 862 $img.attr('src', scalerUrl); | |
| 601 | 863 }; |
| 608 | 864 |
| 603 | 865 // creates HTML structure for buttons in elem |
| 690 | 866 var createButtons = function (data, buttonSetIdx) { |
| 640 | 867 var $elem = data.$elem; |
|
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868 var settings = data.settings; |
| 658 | 869 var mode = settings.interactionMode; |
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870 var buttonSettings = settings.buttonSettings[mode]; |
| 675 | 871 var buttonGroup = buttonSettings.buttonSets[buttonSetIdx]; |
| 683 | 872 if (buttonGroup == null) { |
| 873 // no buttons here | |
| 874 return; | |
| 875 } | |
| 876 var $buttonsDiv = $('<div class="buttons"/>'); | |
| 675 | 877 var buttonNames = buttonSettings[buttonGroup]; |
| 878 for (var i = 0; i < buttonNames.length; i++) { | |
| 879 var buttonName = buttonNames[i]; | |
| 880 var buttonConfig = settings.buttons[buttonName]; | |
| 658 | 881 // construct the button html |
| 882 var $button = $('<div class="button"></div>'); | |
| 883 var $a = $('<a/>'); | |
| 884 var $img = $('<img class="button"/>'); | |
| 885 $buttonsDiv.append($button); | |
| 886 $button.append($a); | |
| 887 $a.append($img); | |
| 888 // add attributes and bindings | |
| 889 $button.attr('title', buttonConfig.tooltip); | |
| 675 | 890 $button.addClass('button-' + buttonName); |
| 658 | 891 // create handler for the buttons |
| 892 $a.bind('click.digilib', (function () { | |
| 893 // we create a new closure to capture the value of action | |
| 894 var action = buttonConfig.onclick; | |
| 895 if ($.isArray(action)) { | |
| 896 // the handler function calls digilib with action and parameters | |
| 897 return function (evt) { | |
| 898 console.debug('click action=', action, ' evt=', evt); | |
| 899 $elem.digilib.apply($elem, action); | |
| 900 return false; | |
| 901 }; | |
| 902 } else { | |
| 903 // the handler function calls digilib with action | |
| 904 return function (evt) { | |
| 905 console.debug('click action=', action, ' evt=', evt); | |
| 906 $elem.digilib(action); | |
| 907 return false; | |
| 908 }; | |
| 909 } | |
| 910 })()); | |
| 911 $img.attr('src', buttonSettings.imagePath + buttonConfig.img); | |
| 683 | 912 } |
| 655 | 913 // make buttons div scroll if too large for window |
| 914 if ($buttonsDiv.height() > $(window).height() - 10) { | |
| 915 $buttonsDiv.css('position', 'absolute'); | |
| 916 } | |
| 690 | 917 // buttons hidden at first |
| 918 $buttonsDiv.hide(); | |
| 919 $elem.append($buttonsDiv); | |
| 675 | 920 if (data.$buttonSets == null) { |
| 690 | 921 // first button set |
| 675 | 922 data.$buttonSets = [$buttonsDiv]; |
| 923 } else { | |
| 683 | 924 $elem.append($buttonsDiv); |
| 675 | 925 data.$buttonSets[buttonSetIdx] = $buttonsDiv; |
| 926 } | |
| 605 | 927 return $buttonsDiv; |
| 603 | 928 }; |
| 608 | 929 |
| 716 | 930 // returns URL for bird's eye view image |
| 931 var getBirdImgUrl = function (data) { | |
| 932 var settings = data.settings; | |
| 933 var birdDivOptions = { | |
| 934 dw : settings.birdDivWidth, | |
| 935 dh : settings.birdDivHeight | |
| 936 }; | |
| 937 var birdSettings = $.extend({}, settings, birdDivOptions); | |
| 938 // use only the relevant parameters | |
| 939 var birdUrl = settings.scalerBaseUrl + '?' + | |
| 940 getParamString(birdSettings, settings.birdDivParams); | |
| 941 return birdUrl; | |
| 942 }; | |
| 943 | |
| 608 | 944 // creates HTML structure for the bird's eye view in elem |
| 631 | 945 var setupBirdDiv = function (data) { |
| 640 | 946 var $elem = data.$elem; |
| 608 | 947 // the bird's eye div |
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948 var $birdDiv = $('<div class="birdview" style="display:none"/>'); |
| 608 | 949 // the detail indicator frame |
| 719 | 950 var $birdZoom = $('<div class="birdzoom" style="display:none; background-color:transparent;"/>'); |
| 608 | 951 // the small image |
| 952 var $birdImg = $('<img class="birdimg"/>'); | |
| 716 | 953 data.$birdDiv = $birdDiv; |
| 954 data.$birdZoom = $birdZoom; | |
| 955 data.$birdImg = $birdImg; | |
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956 $elem.append($birdDiv); |
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957 $birdDiv.append($birdZoom); |
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958 $birdDiv.append($birdImg); |
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959 $birdZoom.css(data.settings.birdIndicatorStyle); |
| 716 | 960 var birdUrl = getBirdImgUrl(data); |
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961 $birdImg.load(birdImgLoadedHandler(data)); |
| 716 | 962 $birdImg.attr('src', birdUrl); |
| 963 }; | |
| 964 | |
| 965 // update bird's eye view | |
| 966 var updateBirdDiv = function (data) { | |
| 967 if (!data.settings.isBirdDivVisible) return; | |
| 968 var $birdImg = data.$birdImg; | |
| 969 var oldsrc = $birdImg.attr('src'); | |
| 970 var newsrc = getBirdImgUrl(data); | |
| 971 if (oldsrc !== newsrc) { | |
| 972 $birdImg.attr('src', newsrc); | |
| 973 // onload handler re-renders | |
| 974 } else { | |
| 975 // re-render | |
| 976 renderBirdArea(data); | |
| 723 | 977 // enable click and drag |
|
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978 setupBirdDrag(data); |
| 716 | 979 } |
|
712
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980 }; |
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981 |
| 618 | 982 // creates HTML structure for the about view in elem |
|
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983 var setupAboutDiv = function (data) { |
| 640 | 984 var $elem = data.$elem; |
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985 var settings = data.settings; |
| 618 | 986 var $aboutDiv = $('<div class="about" style="display:none"/>'); |
| 609 | 987 var $header = $('<p>Digilib Graphic Viewer</p>'); |
| 988 var $link = $('<a/>'); | |
| 989 var $logo = $('<img class="logo" title="digilib"/>'); | |
| 990 var $content = $('<p/>'); | |
| 991 $elem.append($aboutDiv); | |
| 992 $aboutDiv.append($header); | |
| 993 $aboutDiv.append($link); | |
| 994 $aboutDiv.append($content); | |
| 995 $link.append($logo); | |
| 996 $logo.attr('src', settings.logoUrl); | |
| 628 | 997 $link.attr('href', settings.homeUrl); |
| 609 | 998 $content.text('Version: ' + settings.version); |
| 628 | 999 // click hides |
| 642 | 1000 $aboutDiv.bind('click.digilib', function () { |
| 639 | 1001 settings.isAboutDivVisible = showDiv(settings.isAboutDivVisible, $aboutDiv, 0); |
| 642 | 1002 return false; |
| 703 | 1003 }); |
| 628 | 1004 data.$aboutDiv = $aboutDiv; |
| 627 | 1005 }; |
| 1006 | |
| 628 | 1007 // shows some window e.g. 'about' (toggle visibility if show is null) |
| 1008 var showDiv = function (isVisible, $div, show) { | |
| 638 | 1009 if (show == null) { |
| 628 | 1010 // toggle visibility |
| 1011 isVisible = !isVisible; | |
| 1012 } else { | |
| 1013 // set visibility | |
| 1014 isVisible = show; | |
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1015 } |
| 628 | 1016 if (isVisible) { |
| 1017 $div.fadeIn(); | |
| 1018 } else { | |
| 1019 $div.fadeOut(); | |
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1020 } |
| 628 | 1021 return isVisible; |
| 627 | 1022 }; |
| 609 | 1023 |
| 690 | 1024 // display more (or less) button sets |
| 1025 var showButtons = function (data, more, setIdx, animated) { | |
| 704 | 1026 var atime = animated ? 'fast': 0; |
| 690 | 1027 if (more) { |
| 1028 // add set | |
| 1029 var $otherSets = data.$elem.find('div.buttons:visible'); | |
| 1030 var $set; | |
| 1031 if (data.$buttonSets && data.$buttonSets[setIdx]) { | |
| 1032 // set exists | |
| 1033 $set = data.$buttonSets[setIdx]; | |
| 1034 } else { | |
| 1035 $set = createButtons(data, setIdx); | |
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1036 } |
| 690 | 1037 if ($set == null) return false; |
| 1038 var btnWidth = $set.width(); | |
| 1039 // move remaining sets left and show new set | |
| 704 | 1040 if ($otherSets.length > 0) { |
| 1041 $otherSets.animate({right : '+='+btnWidth+'px'}, atime, | |
| 1042 function () {$set.show();}); | |
| 690 | 1043 } else { |
| 1044 $set.show(); | |
| 704 | 1045 } |
| 690 | 1046 } else { |
| 1047 // remove set | |
| 1048 var $set = data.$buttonSets[setIdx]; | |
| 1049 if ($set == null) return false; | |
| 1050 var btnWidth = $set.width(); | |
| 1051 // hide last set | |
| 1052 $set.hide(); | |
| 1053 // take remaining sets and move right | |
| 1054 var $otherSets = data.$elem.find('div.buttons:visible'); | |
| 704 | 1055 $otherSets.animate({right : '-='+btnWidth+'px'}, atime); |
| 1056 } | |
| 690 | 1057 return true; |
| 1058 }; | |
| 1059 | |
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1060 // create Transform from area and $img |
| 668 | 1061 var getImgTrafo = function ($img, area, rot, hmir, vmir) { |
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1062 var picrect = geom.rectangle($img); |
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1063 var trafo = geom.transform(); |
| 668 | 1064 // move zoom area offset to center |
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1065 trafo.concat(trafo.getTranslation(geom.position(-area.x, -area.y))); |
| 668 | 1066 // scale zoom area size to [1,1] |
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1067 trafo.concat(trafo.getScale(geom.size(1/area.width, 1/area.height))); |
| 668 | 1068 // rotate and mirror (around transformed image center i.e. [0.5,0.5]) |
| 1069 if (rot || hmir || vmir) { | |
| 1070 // move [0.5,0.5] to center | |
| 1071 trafo.concat(trafo.getTranslation(geom.position(-0.5, -0.5))); | |
| 1072 if (hmir) { | |
| 1073 // mirror about center | |
| 1074 trafo.concat(trafo.getMirror('y')); | |
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1075 } |
| 668 | 1076 if (vmir) { |
| 1077 // mirror about center | |
| 1078 trafo.concat(trafo.getMirror('x')); | |
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1079 } |
| 668 | 1080 if (rot) { |
| 1081 // rotate around center | |
| 1082 trafo.concat(trafo.getRotation(parseFloat(rot))); | |
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1083 } |
| 668 | 1084 // move back |
| 1085 trafo.concat(trafo.getTranslation(geom.position(0.5, 0.5))); | |
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1086 } |
|
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1087 // scale to screen position and size |
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1088 trafo.concat(trafo.getScale(picrect)); |
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1089 trafo.concat(trafo.getTranslation(picrect)); |
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1090 return trafo; |
| 648 | 1091 }; |
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1092 |
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1093 // returns function for load event of scaler img |
| 629 | 1094 var scalerImgLoadedHandler = function (data) { |
| 626 | 1095 return function () { |
| 716 | 1096 var $img = $(this); |
| 620 | 1097 console.debug("img loaded! this=", this, " data=", data); |
| 1098 // create Transform from current area and picsize | |
| 668 | 1099 data.imgTrafo = getImgTrafo($img, data.zoomArea, |
| 1100 data.settings.rot, data.scalerFlags.hmir, data.scalerFlags.vmir); | |
| 679 | 1101 console.debug("imgTrafo=", data.imgTrafo); |
| 726 | 1102 // adjust scaler div size |
| 1103 var imgRect = geom.rectangle(data.$img); | |
| 1104 console.debug("imgrect=", imgRect); | |
| 1105 imgRect.adjustDiv(data.$scaler); | |
| 708 | 1106 // show image in case it was hidden (for example in zoomDrag) |
| 726 | 1107 $img.css('visibility', 'visible'); |
| 620 | 1108 // display marks |
| 626 | 1109 renderMarks(data); |
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1110 // TODO: digilib.showArrows(); // show arrow overlays for zoom navigation |
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1111 }; |
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1112 }; |
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1113 |
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1114 // returns function for load event of bird's eye view img |
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1115 var birdImgLoadedHandler = function (data) { |
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1116 return function () { |
| 716 | 1117 var $img = $(this); |
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1118 console.debug("birdimg loaded! this=", this, " data=", data); |
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1119 // create Transform from current area and picsize |
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1120 data.birdTrafo = getImgTrafo($img, FULL_AREA); |
| 661 | 1121 // display red indicator around zoomarea |
| 716 | 1122 renderBirdArea(data); |
| 1123 // enable click and drag | |
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1124 setupBirdDrag(data); |
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1125 }; |
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1126 }; |
| 626 | 1127 |
| 1128 // place marks on the image | |
| 1129 var renderMarks = function (data) { | |
| 640 | 1130 var $elem = data.$elem; |
| 636 | 1131 var marks = data.marks; |
| 642 | 1132 // TODO: clear marks first(?) |
| 626 | 1133 for (var i = 0; i < marks.length; i++) { |
| 1134 var mark = marks[i]; | |
| 636 | 1135 if (data.zoomArea.containsPosition(mark)) { |
| 626 | 1136 var mpos = data.imgTrafo.transform(mark); |
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1137 console.debug("renderMarks: mpos=",mpos); |
| 626 | 1138 // create mark |
| 1139 var html = '<div class="mark">'+(i+1)+'</div>'; | |
| 1140 var $mark = $(html); | |
| 1141 $elem.append($mark); | |
| 647 | 1142 $mark.offset({left : mpos.x, top : mpos.y}); |
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1143 } |
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1144 } |
| 626 | 1145 }; |
| 648 | 1146 |
|
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1147 // show zoom area indicator on bird's eye view |
| 716 | 1148 var renderBirdArea = function (data) { |
|
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1149 var $birdZoom = data.$birdZoom; |
| 652 | 1150 var zoomArea = data.zoomArea; |
| 716 | 1151 var normalSize = isFullArea(zoomArea); |
| 1152 if (normalSize) { | |
| 1153 $birdZoom.hide(); | |
| 1154 return; | |
| 1155 } else { | |
| 1156 $birdZoom.show(); | |
| 1157 } | |
| 723 | 1158 // position may have changed |
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1159 data.birdTrafo = getImgTrafo(data.$birdImg, FULL_AREA); |
| 652 | 1160 var indRect = data.birdTrafo.transform(zoomArea); |
|
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1161 var coords = { |
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1162 left : indRect.x-2, // acount for frame width |
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1163 top : indRect.y-2, |
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1164 width : indRect.width, |
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1165 height: indRect.height |
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1166 }; |
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1167 if (data.settings.interactionMode === 'fullscreen') { |
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1168 // no animation for fullscreen |
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1169 $birdZoom.width(coords.width); |
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1170 $birdZoom.height(coords.height); |
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1171 $birdZoom.offset(coords); |
| 716 | 1172 } else { |
| 1173 // nice animation for embedded mode :-) | |
| 719 | 1174 var ppos = $birdZoom.offsetParent().offset(); |
| 1175 // correct offsetParent because animate is relative | |
| 1176 coords.left = (coords.left - ppos.left) + 'px' ; | |
| 1177 coords.top = (coords.top - ppos.top) + 'px'; | |
| 718 | 1178 $birdZoom.animate(coords); |
| 716 | 1179 } |
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1180 }; |
| 652 | 1181 |
| 640 | 1182 // zooms by the given factor |
| 636 | 1183 var zoomBy = function(data, factor) { |
| 1184 var area = data.zoomArea; | |
| 1185 var newarea = area.copy(); | |
| 1186 // scale | |
| 1187 newarea.width /= factor; | |
| 1188 newarea.height /= factor; | |
| 1189 // and recenter | |
| 1190 newarea.x -= 0.5 * (newarea.width - area.width); | |
| 1191 newarea.y -= 0.5 * (newarea.height - area.height); | |
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1192 newarea = FULL_AREA.fit(newarea); |
| 636 | 1193 data.zoomArea = newarea; |
|
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1194 redisplay(data); |
| 636 | 1195 }; |
| 1196 | |
| 640 | 1197 // add a mark where clicked |
| 1198 var setMark = function (data) { | |
| 642 | 1199 var $scaler = data.$scaler; |
| 640 | 1200 // start event capturing |
| 642 | 1201 $scaler.one('click.digilib', function (evt) { |
| 640 | 1202 // event handler adding a new mark |
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1203 var mpos = geom.position(evt); |
| 640 | 1204 var pos = data.imgTrafo.invtransform(mpos); |
| 1205 data.marks.push(pos); | |
| 1206 redisplay(data); | |
| 642 | 1207 return false; // do we even get here? |
| 640 | 1208 }); |
| 1209 }; | |
| 661 | 1210 |
| 647 | 1211 var zoomArea = function(data) { |
| 1212 $elem = data.$elem; | |
| 1213 $scaler = data.$scaler; | |
| 1214 var pt1, pt2; | |
| 1215 var $zoomDiv = $('<div class="zoomrect" style="display:none"/>'); | |
| 1216 $elem.append($zoomDiv); | |
| 661 | 1217 $zoomDiv.css(data.settings.zoomrectStyle); |
| 647 | 1218 var picRect = geom.rectangle($scaler); |
| 1219 // FIX ME: is there a way to query the border width from CSS info? | |
| 1220 // rect.x -= 2; // account for overlay borders | |
| 1221 // rect.y -= 2; | |
| 1222 | |
| 1223 var zoomStart = function (evt) { | |
| 1224 pt1 = geom.position(evt); | |
| 1225 // setup and show zoom div | |
| 1226 //moveElement(zoomdiv, Rectangle(pt1.x, pt1.y, 0, 0)); | |
| 1227 $zoomDiv.offset({left : pt1.x, top : pt1.y}); | |
| 661 | 1228 $zoomDiv.width(0).height(0); |
| 647 | 1229 $zoomDiv.show(); |
| 1230 // register events | |
| 1231 $elem.bind("mousemove.digilib", zoomMove); | |
| 1232 $elem.bind("mouseup.digilib", zoomEnd); | |
| 1233 return false; | |
| 1234 }; | |
| 661 | 1235 |
| 647 | 1236 // mouseup handler: end moving |
| 1237 var zoomEnd = function (evt) { | |
| 1238 pt2 = geom.position(evt); | |
| 1239 // assume a click and continue if the area is too small | |
| 1240 var clickRect = geom.rectangle(pt1, pt2); | |
| 703 | 1241 if (clickRect.getArea() <= 5) return false; |
| 647 | 1242 // hide zoom div |
| 1243 $zoomDiv.remove(); | |
| 1244 // unregister events | |
| 1245 $elem.unbind("mousemove.digilib", zoomMove); | |
| 1246 $elem.unbind("mouseup.digilib", zoomEnd); | |
| 1247 // clip and transform | |
| 1248 clickRect.clipTo(picRect); | |
| 1249 var area = data.imgTrafo.invtransform(clickRect); | |
| 1250 data.zoomArea = area; | |
| 1251 // zoomed is always fit | |
| 1252 data.settings.ws = 1; | |
| 1253 redisplay(data); | |
| 1254 return false; | |
| 1255 }; | |
| 661 | 1256 |
| 647 | 1257 // mouse move handler |
| 1258 var zoomMove = function (evt) { | |
| 1259 pt2 = geom.position(evt); | |
| 1260 var rect = geom.rectangle(pt1, pt2); | |
| 1261 rect.clipTo(picRect); | |
| 1262 // update zoom div | |
|
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1263 rect.adjustDiv($zoomDiv); |
| 647 | 1264 return false; |
| 1265 }; | |
| 661 | 1266 |
| 647 | 1267 // bind start zoom handler |
| 1268 $scaler.one('mousedown.digilib', zoomStart); | |
| 1269 }; | |
| 640 | 1270 |
| 716 | 1271 // bird's eye view zoom area click and drag handler |
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1272 var setupBirdDrag = function(data) { |
|
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1273 var $birdImg = data.$birdImg; |
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1274 var $birdZoom = data.$birdZoom; |
| 723 | 1275 var $document = $(document); |
|
671
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1276 var startPos, newRect, birdImgRect, birdZoomRect; |
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1277 |
| 726 | 1278 // mousemove handler: drag |
|
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1279 var birdZoomMove = function(evt) { |
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1280 var pos = geom.position(evt); |
| 723 | 1281 var delta = startPos.delta(pos); |
|
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1282 // move birdZoom div, keeping size |
| 723 | 1283 newRect = birdZoomRect.copy(); |
| 726 | 1284 newRect.addPosition(delta); |
|
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1285 // stay within birdimage |
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1286 newRect.stayInside(birdImgRect); |
| 723 | 1287 newRect.adjustDiv($birdZoom); |
|
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1288 return false; |
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1289 }; |
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1290 |
| 726 | 1291 // mouseup handler: reload page |
|
671
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1292 var birdZoomEndDrag = function(evt) { |
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1293 var settings = data.settings; |
| 723 | 1294 $document.unbind("mousemove.dlBirdMove", birdZoomMove); |
| 1295 $document.unbind("mouseup.dlBirdMove", birdZoomEndDrag); | |
| 1296 $birdZoom.unbind("mousemove.dlBirdMove", birdZoomMove); | |
| 1297 $birdZoom.unbind("mouseup.dlBirdMove", birdZoomEndDrag); | |
| 1298 if (newRect == null) { | |
| 1299 // no movement happened - set center to click position | |
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1300 startPos = birdZoomRect.getCenter(); |
| 723 | 1301 birdZoomMove(evt); |
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1302 } |
| 723 | 1303 var newArea = data.birdTrafo.invtransform(newRect); |
| 1304 data.zoomArea = newArea; | |
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1305 redisplay(data); |
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1306 return false; |
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1307 }; |
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1308 |
| 726 | 1309 // mousedown handler: start dragging bird zoom to a new position |
|
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1310 var birdZoomStartDrag = function(evt) { |
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1311 startPos = geom.position(evt); |
| 723 | 1312 // position may have changed |
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1313 data.birdTrafo = getImgTrafo($birdImg, FULL_AREA); |
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1314 birdImgRect = geom.rectangle($birdImg); |
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1315 birdZoomRect = geom.rectangle($birdZoom); |
| 723 | 1316 $document.bind("mousemove.dlBirdMove", birdZoomMove); |
| 1317 $document.bind("mouseup.dlBirdMove", birdZoomEndDrag); | |
| 1318 $birdZoom.bind("mousemove.dlBirdMove", birdZoomMove); | |
| 1319 $birdZoom.bind("mouseup.dlBirdMove", birdZoomEndDrag); | |
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1320 return false; |
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1321 }; |
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1322 |
| 723 | 1323 // clear old handler |
| 1324 $document.unbind(".dlBirdMove"); | |
| 1325 $birdImg.unbind(".dlBirdMove"); | |
| 1326 $birdZoom.unbind(".dlBirdMove"); | |
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1327 if (! isFullArea(data.zoomArea)) { |
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1328 // set new handler |
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1329 $birdImg.bind("mousedown.dlBirdMove", birdZoomStartDrag); |
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1330 $birdZoom.bind("mousedown.dlBirdMove", birdZoomStartDrag); |
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1331 } |
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1332 }; |
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1333 |
| 698 | 1334 var setupZoomDrag = function(data) { |
| 726 | 1335 // setup handlers for dragging the zoomed image |
| 1336 var startPos, delta; | |
| 1337 var $document = $(document); | |
| 698 | 1338 var $elem = data.$elem; |
| 1339 var $scaler = data.$scaler; | |
| 1340 var $img = data.$img; | |
| 703 | 1341 |
| 726 | 1342 // drag the image and load a new detail on mouse up |
| 698 | 1343 var dragStart = function (evt) { |
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1344 // don't start dragging if not zoomed |
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1345 if (isFullArea(data.zoomArea)) return false; |
| 726 | 1346 startPos = geom.position(evt); |
| 698 | 1347 $imgRect = geom.rectangle($img); |
| 1348 // hide the scaler image, show it as background of div instead | |
| 708 | 1349 $scaler.css({ |
| 698 | 1350 'background-image' : 'url(' + $img.attr('src') + ')', |
| 1351 'background-repeat' : 'no-repeat', | |
| 699 | 1352 'background-position' : 'top left', |
| 698 | 1353 'cursor' : 'move' |
| 1354 }); | |
| 723 | 1355 $img.css('visibility', 'hidden'); |
| 726 | 1356 $document.bind("mousemove.dlZoomDrag", dragMove); |
| 1357 $document.bind("mouseup.dlZoomDrag", dragEnd); | |
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1358 return false; |
| 698 | 1359 }; |
| 703 | 1360 |
| 726 | 1361 // mousemove handler: drag zoomed image |
| 698 | 1362 var dragMove = function (evt) { |
| 1363 var pos = geom.position(evt); | |
| 726 | 1364 delta = pos.delta(startPos); |
| 698 | 1365 // move the background image to the new position |
| 708 | 1366 $scaler.css({ |
| 726 | 1367 'background-position' : (-delta.x) + "px " + (-delta.y) + "px" |
| 698 | 1368 }); |
| 1369 return false; | |
| 1370 }; | |
| 703 | 1371 |
| 726 | 1372 // mouseup handler: reload zoomed image in new position |
| 698 | 1373 var dragEnd = function (evt) { |
| 708 | 1374 $scaler.css({ |
| 698 | 1375 'cursor' : 'default' |
| 1376 }); | |
| 726 | 1377 $document.unbind("mousemove.dlZoomDrag", dragMove); |
| 1378 $document.unbind("mouseup.dlZoomDrag", dragEnd); | |
| 1379 if (delta == null || delta.distance() < 2) { | |
| 1380 // no movement | |
| 1381 $img.css('visibility', 'visible'); | |
| 1382 return false; | |
| 1383 } | |
| 1384 // get old zoom area (screen coordinates) | |
| 1385 var za = data.imgTrafo.transform(data.zoomArea); | |
| 1386 // move | |
| 1387 za.addPosition(delta); | |
| 1388 // transform back | |
| 1389 var newArea = data.imgTrafo.invtransform(za); | |
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1390 data.zoomArea = FULL_AREA.fit(newArea); |
|
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1391 redisplay(data); |
| 698 | 1392 return false; |
| 1393 }; | |
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1394 |
| 726 | 1395 // clear old handler |
| 1396 $document.unbind(".dlZoomDrag"); | |
| 1397 $scaler.unbind(".dlBirdMove"); | |
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1398 $scaler.bind("mousedown.dlZoomDrag", dragStart); |
| 698 | 1399 }; |
| 1400 | |
| 696 | 1401 // get image quality as a number (0..2) |
| 1402 var getQuality = function (data) { | |
| 1403 var flags = data.scalerFlags; | |
| 1404 var q = flags.q2 || flags.q1 || 'q0'; // assume q0 as default | |
| 1405 return parseInt(q[1], 10); | |
| 699 | 1406 }; |
| 696 | 1407 |
| 1408 // set image quality as a number (0..2) | |
| 1409 var setQuality = function (data, qual) { | |
| 1410 var flags = data.scalerFlags; | |
| 1411 // clear flags | |
| 1412 for (var i = 0; i < 3; ++i) { | |
| 1413 delete flags['q'+i]; | |
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1414 } |
| 696 | 1415 flags['q'+qual] = 'q'+qual; |
| 699 | 1416 }; |
| 703 | 1417 |
| 643 | 1418 // sets a key to a value (relative values with +/- if relative=true) |
| 1419 var setNumValue = function(settings, key, value) { | |
| 709 | 1420 if (value == null) return null; |
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1421 if (isNumber(value)) { |
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1422 settings[key] = value; |
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1423 return value; |
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1424 } |
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1425 var sign = value[0]; |
| 643 | 1426 if (sign === '+' || sign === '-') { |
| 1427 if (settings[key] == null) { | |
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1428 // this isn't perfect but still... |
| 643 | 1429 settings[key] = 0; |
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1430 } |
| 643 | 1431 settings[key] = parseFloat(settings[key]) + parseFloat(value); |
| 1432 } else { | |
| 1433 settings[key] = value; | |
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1434 } |
| 643 | 1435 return settings[key]; |
| 1436 }; | |
| 648 | 1437 |
| 1438 // auxiliary function (from old dllib.js) | |
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1439 var isFullArea = function(area) { |
| 652 | 1440 return (area.width === 1.0) && (area.height === 1.0); |
| 648 | 1441 }; |
| 1442 | |
| 634 | 1443 // auxiliary function (from Douglas Crockford, A.10) |
| 1444 var isNumber = function isNumber(value) { | |
| 703 | 1445 return typeof value === 'number' && isFinite(value); |
| 634 | 1446 }; |
| 648 | 1447 |
| 624 | 1448 // auxiliary function to crop senseless precision |
| 1449 var cropFloat = function (x) { | |
| 630 | 1450 return parseInt(10000 * x, 10) / 10000; |
| 624 | 1451 }; |
| 648 | 1452 |
| 685 | 1453 // fallback for console.log calls |
| 1454 if (customConsole) { | |
| 1455 var logFunction = function(type) { | |
| 1456 return function(){ | |
| 1457 var $debug = $('#debug'); // debug div | |
| 1458 if (!$debug) return; | |
| 1459 var args = Array.prototype.slice.call(arguments); | |
| 1460 var argtext = args.join(' '); | |
| 1461 var $logDiv = $('<div/>'); | |
| 1462 $logDiv.addClass(type); | |
| 1463 $logDiv.text(argtext); | |
| 1464 $debug.append($logDiv); | |
| 1465 }; | |
| 1466 }; | |
| 1467 console.log = logFunction('_log'); | |
| 1468 console.debug = logFunction('_debug'); | |
| 1469 console.error = logFunction('_error'); | |
|
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1470 } |
| 685 | 1471 |
| 598 | 1472 // hook plugin into jquery |
|
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1473 $.fn.digilib = function(action) { |
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1474 if (actions[action]) { |
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|
1475 // call action on this with the remaining arguments (inserting data as first argument) |
|
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1476 var $elem = $(this); |
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1477 var data = $elem.data('digilib'); |
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1478 var args = Array.prototype.slice.call(arguments, 1); |
|
bffc7d8c3641
renamed 'actions' to 'buttons' and 'methods' to 'actions'
robcast
parents:
643
diff
changeset
|
1479 args.unshift(data); |
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bffc7d8c3641
renamed 'actions' to 'buttons' and 'methods' to 'actions'
robcast
parents:
643
diff
changeset
|
1480 return actions[action].apply(this, args); |
|
bffc7d8c3641
renamed 'actions' to 'buttons' and 'methods' to 'actions'
robcast
parents:
643
diff
changeset
|
1481 } else if (typeof(action) === 'object' || !action) { |
| 627 | 1482 // call init on this |
|
644
bffc7d8c3641
renamed 'actions' to 'buttons' and 'methods' to 'actions'
robcast
parents:
643
diff
changeset
|
1483 return actions.init.apply(this, arguments); |
| 598 | 1484 } else { |
|
706
498f9c7487ae
more cosmetics: added options to validate with http://www.jslint.com
robcast
parents:
704
diff
changeset
|
1485 $.error('action ' + action + ' does not exist on jQuery.digilib'); |
|
498f9c7487ae
more cosmetics: added options to validate with http://www.jslint.com
robcast
parents:
704
diff
changeset
|
1486 } |
| 598 | 1487 }; |
| 685 | 1488 |
| 597 | 1489 })(jQuery); |