Mercurial > hg > digilib
annotate client/digitallibrary/jquery/jquery.digilib.js @ 720:203ef842de13 jquery
first steps to storing embedded state in cookie
| author | robcast |
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| date | Tue, 01 Feb 2011 11:18:32 +0100 |
| parents | e2429ec1976e |
| children | aaaf0a5ada66 |
| 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 | |
| 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 |
| 636 | 255 var MAX_ZOOMAREA = 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); | |
| 298 // ignore fn and pn from cookie | |
| 299 cp.fn = params.fn; | |
| 300 cp.pn = params.pn; | |
| 301 params = cp; | |
| 302 } | |
| 303 } | |
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304 } |
| 661 | 305 // store $(this) element in the settings |
| 681 | 306 elemSettings = $.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); | |
| 703 | 329 // TODO: the actual moving code |
| 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(?) | |
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384 // TODO: adjust bird div |
| 661 | 385 data.marks = []; |
| 386 data.zoomArea = MAX_ZOOMAREA; | |
| 387 // then reload | |
| 388 redisplay(data); | |
| 389 }, | |
| 647 | 390 |
| 661 | 391 // zoom by a given factor |
| 392 zoomBy : function (data, factor) { | |
| 393 zoomBy(data, factor); | |
| 394 }, | |
| 640 | 395 |
| 661 | 396 // zoom interactively |
| 397 zoomArea : function (data) { | |
| 398 zoomArea(data); | |
| 399 }, | |
| 643 | 400 |
| 661 | 401 // zoom out to full page |
| 402 zoomFull : function (data, mode) { | |
| 403 data.zoomArea = MAX_ZOOMAREA; | |
| 404 if (mode === 'width') { | |
| 405 data.dlOpts.fitwidth = 1; | |
| 406 delete data.dlOpts.fitheight; | |
| 407 } else if (mode === 'height') { | |
| 408 data.dlOpts.fitheight = 1; | |
| 409 delete data.dlOpts.fitwidth; | |
| 410 } else { | |
| 411 delete data.dlOpts.fitwidth; | |
| 412 delete data.dlOpts.fitheight; | |
| 413 } | |
| 414 redisplay(data); | |
| 415 }, | |
| 416 | |
| 417 // set a mark by clicking (or giving a position) | |
| 418 setMark : function (data, mpos) { | |
| 419 if (mpos == null) { | |
| 420 // interactive | |
| 421 setMark(data); | |
| 422 } else { | |
| 423 // use position | |
| 424 data.marks.push(pos); | |
| 656 | 425 redisplay(data); |
| 597 | 426 } |
| 661 | 427 }, |
| 428 | |
| 429 // remove the last mark | |
| 430 removeMark : function (data) { | |
| 431 data.marks.pop(); | |
| 432 redisplay(data); | |
| 433 }, | |
| 434 | |
| 435 // mirror the image | |
| 436 mirror : function (data, mode) { | |
| 437 var flags = data.scalerFlags; | |
| 438 if (mode === 'h') { | |
| 439 if (flags.hmir) { | |
| 440 delete flags.hmir; | |
| 441 } else { | |
| 442 flags.hmir = 1; | |
| 443 } | |
| 444 } else { | |
| 445 if (flags.vmir) { | |
| 446 delete flags.vmir; | |
| 447 } else { | |
| 448 flags.vmir = 1; | |
| 449 } | |
| 450 } | |
| 451 redisplay(data); | |
| 452 }, | |
| 643 | 453 |
| 661 | 454 // rotate the image |
| 455 rotate : function (data, angle) { | |
| 456 var rot = data.settings.rot; | |
| 457 if (angle == null) { | |
| 458 angle = window.prompt("Rotation angle:", rot); | |
| 459 } | |
| 460 data.settings.rot = angle; | |
| 461 redisplay(data); | |
| 462 }, | |
| 463 | |
| 464 // change brightness | |
| 465 brightness : function (data, factor) { | |
| 466 var brgt = data.settings.brgt; | |
| 467 if (factor == null) { | |
| 468 factor = window.prompt("Brightness (-255..255)", brgt); | |
| 469 } | |
| 470 data.settings.brgt = factor; | |
| 471 redisplay(data); | |
| 472 }, | |
| 473 | |
| 474 // change contrast | |
| 475 contrast : function (data, factor) { | |
| 476 var cont = data.settings.cont; | |
| 477 if (factor == null) { | |
| 478 factor = window.prompt("Contrast (-8, 8)", cont); | |
| 479 } | |
| 480 data.settings.cont = factor; | |
| 481 redisplay(data); | |
| 681 | 482 }, |
| 703 | 483 |
| 683 | 484 // display more (or less) button sets |
| 485 morebuttons : function (data, more) { | |
| 689 | 486 var settings = data.settings; |
| 692 | 487 if (more == null) { |
| 696 | 488 // toggle more or less (only works for 2 sets) |
| 692 | 489 var maxbtns = settings.buttonSettings[settings.interactionMode].buttonSets.length; |
| 490 if (settings.visibleButtonSets >= maxbtns) { | |
| 491 more = '-1'; | |
| 492 } else { | |
| 493 more = '+1'; | |
| 494 } | |
| 495 } | |
| 683 | 496 if (more === '-1') { |
| 497 // remove set | |
| 690 | 498 var setIdx = settings.visibleButtonSets - 1; |
| 499 if (showButtons(data, false, setIdx, true)) { | |
| 500 settings.visibleButtonSets--; | |
| 501 } | |
| 683 | 502 } else { |
| 503 // add set | |
| 690 | 504 var setIdx = settings.visibleButtonSets; |
| 505 if (showButtons(data, true, setIdx, true)) { | |
| 506 settings.visibleButtonSets++; | |
| 683 | 507 } |
| 508 } | |
| 716 | 509 // persist setting |
| 510 storeOptions(data); | |
| 684 | 511 }, |
| 681 | 512 |
| 696 | 513 // reset image parameters to defaults |
| 681 | 514 reset : function (data) { |
| 515 var settings = data.settings; | |
| 516 var paramNames = settings.digilibParamNames; | |
| 517 var params = data.queryParams; | |
| 702 | 518 // resets zoomArea, marks, scalerflags |
| 681 | 519 resetData(data); |
| 520 // delete all digilib parameters | |
| 521 for (var i = 0; i < paramNames.length; i++) { | |
| 522 var paramName = paramNames[i]; | |
| 523 delete settings[paramName]; | |
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524 } |
| 681 | 525 // fullscreen: restore only fn/pn parameters |
| 526 if (settings.interactionMode === 'fullscreen') { | |
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527 settings.fn = params.fn || ''; // no default defined |
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528 settings.pn = params.pn || defaults.pn; |
| 681 | 529 // embedded: restore original parameters |
| 530 } else { | |
| 531 $.extend(settings, params); | |
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532 } |
| 702 | 533 // TODO: should we really reset all user preferences here? |
| 534 settings.isBirdDivVisible = false; | |
| 535 settings.visibleButtonSets = 1; | |
| 705 | 536 delete data.dlOpts.fitwidth; |
| 537 delete data.dlOpts.fitheight; | |
| 681 | 538 redisplay(data); |
| 682 | 539 }, |
| 540 | |
| 696 | 541 // presents a reference url (returns value if noprompt) |
| 542 reference : function (data, noprompt) { | |
| 682 | 543 var settings = data.settings; |
| 544 var url; | |
| 545 if (settings.interactionMode === 'fullscreen') { | |
| 546 url = getDigilibUrl(data); | |
| 547 } else { | |
| 548 url = getScalerUrl(data); | |
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549 } |
| 696 | 550 if (noprompt == null) { |
| 551 window.prompt("URL reference to the current view", url); | |
| 552 } | |
| 553 return url; | |
| 554 }, | |
| 703 | 555 |
| 696 | 556 // set image quality |
| 557 setquality : function (data, qual) { | |
| 558 var oldq = getQuality(data); | |
| 559 if (qual == null) { | |
| 560 qual = window.prompt("Image quality (0..2)", oldq); | |
| 561 } | |
| 562 qual = parseInt(qual, 10); | |
| 563 if (qual >= 0 && qual <= 2) { | |
| 564 setQuality(data, qual); | |
| 565 redisplay(data); | |
| 566 } | |
| 661 | 567 } |
| 598 | 568 }; |
| 597 | 569 |
| 601 | 570 // returns parameters from page url |
| 600 | 571 var parseQueryParams = function() { |
| 629 | 572 return parseQueryString(window.location.search.slice(1)); |
| 573 }; | |
| 648 | 574 |
| 629 | 575 // returns parameters from embedded img-element |
| 600 | 576 var parseImgParams = function($elem) { |
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577 var src = $elem.find('img').first().attr('src'); |
| 703 | 578 if (!src) return null; |
| 600 | 579 var pos = src.indexOf('?'); |
| 580 var query = (pos < 0) ? '' : src.substring(pos + 1); | |
| 581 var scalerUrl = src.substring(0, pos); | |
| 620 | 582 var params = parseQueryString(query); |
| 583 params.scalerBaseUrl = scalerUrl; | |
| 584 return params; | |
| 629 | 585 }; |
| 600 | 586 |
| 601 | 587 // parses query parameter string into parameter object |
| 600 | 588 var parseQueryString = function(query) { |
| 694 | 589 var params = {}; |
| 590 if (query == null) return params; | |
| 600 | 591 var pairs = query.split("&"); |
| 629 | 592 //var keys = []; |
| 600 | 593 for (var i = 0; i < pairs.length; i++) { |
| 594 var pair = pairs[i].split("="); | |
| 595 if (pair.length === 2) { | |
| 620 | 596 params[pair[0]] = pair[1]; |
| 629 | 597 //keys.push(pair[0]); |
| 627 | 598 } |
| 629 | 599 } |
| 620 | 600 return params; |
| 629 | 601 }; |
| 661 | 602 |
| 636 | 603 // returns a query string from key names from a parameter hash (ignoring if the same value is in defaults) |
| 604 var getParamString = function (settings, keys, defaults) { | |
| 608 | 605 var paramString = ''; |
| 643 | 606 var nx = false; |
| 608 | 607 for (i = 0; i < keys.length; ++i) { |
| 608 var key = keys[i]; | |
| 656 | 609 if ((settings[key] != null) && ((defaults == null) || (settings[key] != defaults[key]))) { |
| 608 | 610 // first param gets no '&' |
| 643 | 611 if (nx) { |
| 612 paramString += '&'; | |
| 613 } else { | |
| 614 nx = true; | |
| 615 } | |
| 608 | 616 // add parm=val |
| 617 paramString += key + '=' + settings[key]; | |
| 636 | 618 } |
| 608 | 619 } |
| 620 return paramString; | |
| 624 | 621 }; |
| 622 | |
| 629 | 623 // returns URL and query string for Scaler |
| 624 var getScalerUrl = function (data) { | |
| 646 | 625 var settings = data.settings; |
| 645 | 626 if (settings.scalerBaseUrl == null) { |
| 627 alert("ERROR: URL of digilib Scaler servlet missing!"); | |
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628 } |
| 658 | 629 packParams(data); |
| 629 | 630 var keys = settings.scalerParamNames; |
| 636 | 631 var queryString = getParamString(settings, keys, defaults); |
| 629 | 632 var url = settings.scalerBaseUrl + '?' + queryString; |
| 633 return url; | |
| 634 }; | |
| 635 | |
| 636 // returns URL and query string for current digilib | |
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637 var getDigilibUrl = function (data) { |
| 636 | 638 packParams(data); |
| 629 | 639 var settings = data.settings; |
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640 var queryString = getParamString(settings, settings.digilibParamNames, defaults); |
| 629 | 641 var url = window.location.toString(); |
| 642 var pos = url.indexOf('?'); | |
| 643 var baseUrl = url.substring(0, pos); | |
| 644 var newurl = baseUrl + '?' + queryString; | |
| 645 return newurl; | |
| 646 }; | |
| 647 | |
| 648 | 648 // processes some parameters into objects and stuff |
| 624 | 649 var unpackParams = function (data) { |
| 650 var settings = data.settings; | |
| 629 | 651 // zoom area |
| 624 | 652 var zoomArea = geom.rectangle(settings.wx, settings.wy, settings.ww, settings.wh); |
| 636 | 653 data.zoomArea = zoomArea; |
| 629 | 654 // marks |
| 624 | 655 var marks = []; |
| 643 | 656 if (settings.mk) { |
| 657 var mk = settings.mk; | |
| 658 if (mk.indexOf(";") >= 0) { | |
| 659 var pa = mk.split(";"); // old format with ";" | |
| 660 } else { | |
| 661 var pa = mk.split(","); // new format | |
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662 } |
| 643 | 663 for (var i = 0; i < pa.length ; i++) { |
| 664 var pos = pa[i].split("/"); | |
| 665 if (pos.length > 1) { | |
| 666 marks.push(geom.position(pos[0], pos[1])); | |
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667 } |
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668 } |
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669 } |
| 636 | 670 data.marks = marks; |
| 643 | 671 // mo (Scaler flags) |
| 672 var flags = {}; | |
| 673 if (settings.mo) { | |
| 674 var pa = settings.mo.split(","); | |
| 675 for (var i = 0; i < pa.length ; i++) { | |
| 676 flags[pa[i]] = pa[i]; | |
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677 } |
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678 } |
| 643 | 679 data.scalerFlags = flags; |
| 716 | 680 retrieveOptions(data); |
| 648 | 681 }; |
| 682 | |
| 624 | 683 // put objects back into parameters |
| 684 var packParams = function (data) { | |
| 685 var settings = data.settings; | |
| 629 | 686 // zoom area |
| 636 | 687 if (data.zoomArea) { |
| 640 | 688 settings.wx = cropFloat(data.zoomArea.x); |
| 689 settings.wy = cropFloat(data.zoomArea.y); | |
| 690 settings.ww = cropFloat(data.zoomArea.width); | |
| 691 settings.wh = cropFloat(data.zoomArea.height); | |
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692 } |
| 629 | 693 // marks |
| 636 | 694 if (data.marks) { |
| 643 | 695 settings.mk = ''; |
| 636 | 696 for (var i = 0; i < data.marks.length; i++) { |
| 643 | 697 if (i) { |
| 698 settings.mk += ','; | |
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699 } |
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700 settings.mk += cropFloat(data.marks[i].x).toString() + |
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701 '/' + cropFloat(data.marks[i].y).toString(); |
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702 } |
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703 } |
| 643 | 704 // Scaler flags |
| 705 if (data.scalerFlags) { | |
| 706 var mo = ''; | |
| 707 for (var f in data.scalerFlags) { | |
| 708 if (mo) { | |
| 709 mo += ','; | |
| 710 } | |
| 711 mo += f; | |
| 712 } | |
| 713 settings.mo = mo; | |
| 714 } | |
| 703 | 715 // user interface options |
| 716 | 716 storeOptions(data); |
| 702 | 717 }; |
| 681 | 718 |
| 716 | 719 var storeOptions = function (data) { |
| 694 | 720 // save digilib options in cookie |
| 702 | 721 // TODO: in embedded mode this is not called |
| 694 | 722 /* store in parameter clop |
| 723 * if (data.dlOpts) { | |
| 724 var clop = ''; | |
| 725 for (var o in data.dlOpts) { | |
| 726 if (clop) { | |
| 643 | 727 clop += ','; |
| 728 } | |
| 729 clop += o; | |
| 730 } | |
| 731 settings.clop = clop; | |
| 694 | 732 } */ |
| 702 | 733 var settings = data.settings; |
| 734 if (data.dlOpts) { | |
| 735 // save digilib settings in options | |
| 736 data.dlOpts.birdview = settings.isBirdDivVisible ? 1 : 0; | |
| 737 data.dlOpts.buttons = settings.visibleButtonSets; | |
| 738 var clop = ''; | |
| 739 for (var o in data.dlOpts) { | |
| 740 if (clop) { | |
| 741 clop += '&'; | |
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742 } |
| 702 | 743 clop += o + '=' + data.dlOpts[o]; |
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744 } |
| 702 | 745 if (jQuery.cookie) { |
| 746 var ck = "digilib:fn:" + escape(settings.fn) + ":pn:" + settings.pn; | |
| 747 console.debug("set cookie=", ck, " value=", clop); | |
| 748 jQuery.cookie(ck, clop); | |
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749 } |
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750 } |
| 720 | 751 if (settings.interactionMode !== 'fullscreen' && jQuery.cookie) { |
| 752 // store normal parameters in cookie for embedded mode | |
| 753 var qs = getParamString(settings, settings.digilibParamNames, defaults); | |
| 754 var ck = "digilib-embed:fn:" + escape(settings.fn) + ":pn:" + settings.pn; | |
| 755 console.debug("set cookie=", ck, " value=", qs); | |
| 756 jQuery.cookie(ck, qs); | |
| 757 } | |
| 624 | 758 }; |
| 648 | 759 |
| 716 | 760 var retrieveOptions = function (data) { |
| 702 | 761 // clop (digilib options) |
| 762 var opts = {}; | |
| 763 var settings = data.settings; | |
| 764 if (jQuery.cookie) { | |
| 765 /* read from parameter clop | |
| 766 * if (settings.clop) { | |
| 767 var pa = settings.clop.split(","); | |
| 768 for (var i = 0; i < pa.length ; i++) { | |
| 769 opts[pa[i]] = pa[i]; | |
| 770 } | |
| 771 } */ | |
| 772 // read from cookie | |
| 773 var ck = "digilib:fn:" + escape(settings.fn) + ":pn:" + settings.pn; | |
| 774 var cp = jQuery.cookie(ck); | |
| 775 console.debug("get cookie=", ck, " value=", cp); | |
| 776 // in query string format | |
| 777 opts = parseQueryString(cp); | |
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778 } |
| 702 | 779 data.dlOpts = opts; |
| 780 // birdview option | |
| 781 if (opts.birdview != null) { | |
| 782 settings.isBirdDivVisible = opts.birdview === '1'; | |
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783 } |
| 702 | 784 // visible button sets |
| 785 if (opts.buttons != null) { | |
| 786 settings.visibleButtonSets = opts.buttons; | |
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787 } |
| 704 | 788 }; |
| 702 | 789 |
| 681 | 790 // clear digilib data for reset |
| 791 var resetData = function (data) { | |
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792 // TODO: we should reset instead of delete |
| 681 | 793 if (data.zoomArea) delete data.zoomArea; |
| 794 if (data.marks) delete data.marks; | |
| 795 if (data.scalerFlags) delete data.scalerFlags; | |
| 796 }; | |
| 797 | |
| 615 | 798 // (re)load the img from a new scaler URL |
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799 var redisplay = function (data) { |
| 629 | 800 var settings = data.settings; |
| 801 if (settings.interactionMode === 'fullscreen') { | |
| 802 // update location.href (browser URL) in fullscreen mode | |
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803 var url = getDigilibUrl(data); |
| 629 | 804 var history = window.history; |
| 805 if (typeof(history.pushState) === 'function') { | |
| 806 console.debug("we could modify history, but we don't..."); | |
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807 } |
| 629 | 808 window.location = url; |
| 809 } else { | |
| 810 // embedded mode -- just change img src | |
| 811 var url = getScalerUrl(data); | |
| 812 data.$img.attr('src', url); | |
| 719 | 813 // redisplay bird img |
| 814 updateBirdDiv(data); | |
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815 } |
| 615 | 816 }; |
| 817 | |
| 655 | 818 // returns maximum size for scaler img in fullscreen mode |
| 819 var getFullscreenImgSize = function($elem) { | |
| 820 var $win = $(window); | |
| 821 var winH = $win.height(); | |
| 822 var winW = $win.width(); | |
| 823 // TODO: account for borders? | |
| 824 return geom.size(winW, winH); | |
| 825 }; | |
| 826 | |
| 601 | 827 // creates HTML structure for digilib in elem |
| 620 | 828 var setupScalerDiv = function (data) { |
| 829 var settings = data.settings; | |
| 640 | 830 var $elem = data.$elem; |
| 718 | 831 $elem.addClass('digilib'); |
| 679 | 832 var $img, scalerUrl; |
| 833 // fullscreen | |
| 601 | 834 if (settings.interactionMode === 'fullscreen') { |
| 718 | 835 $elem.addClass('dl_fullscreen'); |
| 602 | 836 var imgSize = getFullscreenImgSize($elem); |
| 643 | 837 // fitwidth/height omits destination height/width |
| 708 | 838 // if (data.dlOpts['fitheight'] !== '1') { |
| 839 if (data.dlOpts['fitheight'] == null) { | |
| 643 | 840 settings.dw = imgSize.width; |
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841 } |
| 708 | 842 // if (data.dlOpts['fitwidth'] !== '1') { |
| 843 if (data.dlOpts['fitwidth'] == null) { | |
| 643 | 844 settings.dh = imgSize.height; |
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845 } |
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846 $img = $('<img/>'); |
| 679 | 847 scalerUrl = getScalerUrl(data); |
| 848 // embedded mode -- try to keep img tag | |
| 602 | 849 } else { |
| 718 | 850 $elem.addClass('dl_embedded'); |
| 616 | 851 $img = $elem.find('img'); |
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852 if ($img.length > 0) { |
| 679 | 853 console.debug("img detach:", $img); |
| 854 scalerUrl = $img.attr('src'); | |
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855 $img.detach(); |
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856 } else { |
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857 $img = $('<img/>'); |
| 679 | 858 scalerUrl = getScalerUrl(data); |
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859 } |
| 601 | 860 } |
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861 // create new html |
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862 $elem.empty(); // TODO: should we keep stuff for customization? |
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863 var $scaler = $('<div class="scaler"/>'); |
|
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864 $elem.append($scaler); |
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865 $scaler.append($img); |
| 615 | 866 $img.addClass('pic'); |
| 642 | 867 data.$scaler = $scaler; |
| 629 | 868 data.$img = $img; |
| 680 | 869 // setup image load handler before setting the src attribute (IE bug) |
| 870 $img.load(scalerImgLoadedHandler(data)); | |
| 871 $img.attr('src', scalerUrl); | |
| 601 | 872 }; |
| 608 | 873 |
| 603 | 874 // creates HTML structure for buttons in elem |
| 690 | 875 var createButtons = function (data, buttonSetIdx) { |
| 640 | 876 var $elem = data.$elem; |
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877 var settings = data.settings; |
| 658 | 878 var mode = settings.interactionMode; |
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879 var buttonSettings = settings.buttonSettings[mode]; |
| 675 | 880 var buttonGroup = buttonSettings.buttonSets[buttonSetIdx]; |
| 683 | 881 if (buttonGroup == null) { |
| 882 // no buttons here | |
| 883 return; | |
| 884 } | |
| 885 var $buttonsDiv = $('<div class="buttons"/>'); | |
| 675 | 886 var buttonNames = buttonSettings[buttonGroup]; |
| 887 for (var i = 0; i < buttonNames.length; i++) { | |
| 888 var buttonName = buttonNames[i]; | |
| 889 var buttonConfig = settings.buttons[buttonName]; | |
| 658 | 890 // construct the button html |
| 891 var $button = $('<div class="button"></div>'); | |
| 892 var $a = $('<a/>'); | |
| 893 var $img = $('<img class="button"/>'); | |
| 894 $buttonsDiv.append($button); | |
| 895 $button.append($a); | |
| 896 $a.append($img); | |
| 897 // add attributes and bindings | |
| 898 $button.attr('title', buttonConfig.tooltip); | |
| 675 | 899 $button.addClass('button-' + buttonName); |
| 658 | 900 // create handler for the buttons |
| 901 $a.bind('click.digilib', (function () { | |
| 902 // we create a new closure to capture the value of action | |
| 903 var action = buttonConfig.onclick; | |
| 904 if ($.isArray(action)) { | |
| 905 // the handler function calls digilib with action and parameters | |
| 906 return function (evt) { | |
| 907 console.debug('click action=', action, ' evt=', evt); | |
| 908 $elem.digilib.apply($elem, action); | |
| 909 return false; | |
| 910 }; | |
| 911 } else { | |
| 912 // the handler function calls digilib with action | |
| 913 return function (evt) { | |
| 914 console.debug('click action=', action, ' evt=', evt); | |
| 915 $elem.digilib(action); | |
| 916 return false; | |
| 917 }; | |
| 918 } | |
| 919 })()); | |
| 920 $img.attr('src', buttonSettings.imagePath + buttonConfig.img); | |
| 683 | 921 } |
| 655 | 922 // make buttons div scroll if too large for window |
| 923 if ($buttonsDiv.height() > $(window).height() - 10) { | |
| 924 $buttonsDiv.css('position', 'absolute'); | |
| 925 } | |
| 690 | 926 // buttons hidden at first |
| 927 $buttonsDiv.hide(); | |
| 928 $elem.append($buttonsDiv); | |
| 675 | 929 if (data.$buttonSets == null) { |
| 690 | 930 // first button set |
| 675 | 931 data.$buttonSets = [$buttonsDiv]; |
| 932 } else { | |
| 683 | 933 $elem.append($buttonsDiv); |
| 675 | 934 data.$buttonSets[buttonSetIdx] = $buttonsDiv; |
| 935 } | |
| 605 | 936 return $buttonsDiv; |
| 603 | 937 }; |
| 608 | 938 |
| 716 | 939 // returns URL for bird's eye view image |
| 940 var getBirdImgUrl = function (data) { | |
| 941 var settings = data.settings; | |
| 942 var birdDivOptions = { | |
| 943 dw : settings.birdDivWidth, | |
| 944 dh : settings.birdDivHeight | |
| 945 }; | |
| 946 var birdSettings = $.extend({}, settings, birdDivOptions); | |
| 947 // use only the relevant parameters | |
| 948 var birdUrl = settings.scalerBaseUrl + '?' + | |
| 949 getParamString(birdSettings, settings.birdDivParams); | |
| 950 return birdUrl; | |
| 951 }; | |
| 952 | |
| 608 | 953 // creates HTML structure for the bird's eye view in elem |
| 631 | 954 var setupBirdDiv = function (data) { |
| 640 | 955 var $elem = data.$elem; |
| 608 | 956 // the bird's eye div |
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957 var $birdDiv = $('<div class="birdview" style="display:none"/>'); |
| 608 | 958 // the detail indicator frame |
| 719 | 959 var $birdZoom = $('<div class="birdzoom" style="display:none; background-color:transparent;"/>'); |
| 608 | 960 // the small image |
| 961 var $birdImg = $('<img class="birdimg"/>'); | |
| 716 | 962 data.$birdDiv = $birdDiv; |
| 963 data.$birdZoom = $birdZoom; | |
| 964 data.$birdImg = $birdImg; | |
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965 $elem.append($birdDiv); |
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966 $birdDiv.append($birdZoom); |
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967 $birdDiv.append($birdImg); |
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968 $birdZoom.css(data.settings.birdIndicatorStyle); |
| 716 | 969 var birdUrl = getBirdImgUrl(data); |
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970 $birdImg.load(birdImgLoadedHandler(data)); |
| 716 | 971 $birdImg.attr('src', birdUrl); |
| 972 }; | |
| 973 | |
| 974 // update bird's eye view | |
| 975 var updateBirdDiv = function (data) { | |
| 976 if (!data.settings.isBirdDivVisible) return; | |
| 977 var $birdImg = data.$birdImg; | |
| 978 var oldsrc = $birdImg.attr('src'); | |
| 979 var newsrc = getBirdImgUrl(data); | |
| 980 if (oldsrc !== newsrc) { | |
| 981 $birdImg.attr('src', newsrc); | |
| 982 // onload handler re-renders | |
| 983 } else { | |
| 984 // re-render | |
| 985 renderBirdArea(data); | |
| 986 } | |
|
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987 }; |
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988 |
| 618 | 989 // creates HTML structure for the about view in elem |
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990 var setupAboutDiv = function (data) { |
| 640 | 991 var $elem = data.$elem; |
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992 var settings = data.settings; |
| 618 | 993 var $aboutDiv = $('<div class="about" style="display:none"/>'); |
| 609 | 994 var $header = $('<p>Digilib Graphic Viewer</p>'); |
| 995 var $link = $('<a/>'); | |
| 996 var $logo = $('<img class="logo" title="digilib"/>'); | |
| 997 var $content = $('<p/>'); | |
| 998 $elem.append($aboutDiv); | |
| 999 $aboutDiv.append($header); | |
| 1000 $aboutDiv.append($link); | |
| 1001 $aboutDiv.append($content); | |
| 1002 $link.append($logo); | |
| 1003 $logo.attr('src', settings.logoUrl); | |
| 628 | 1004 $link.attr('href', settings.homeUrl); |
| 609 | 1005 $content.text('Version: ' + settings.version); |
| 628 | 1006 // click hides |
| 642 | 1007 $aboutDiv.bind('click.digilib', function () { |
| 639 | 1008 settings.isAboutDivVisible = showDiv(settings.isAboutDivVisible, $aboutDiv, 0); |
| 642 | 1009 return false; |
| 703 | 1010 }); |
| 628 | 1011 data.$aboutDiv = $aboutDiv; |
| 627 | 1012 }; |
| 1013 | |
| 628 | 1014 // shows some window e.g. 'about' (toggle visibility if show is null) |
| 1015 var showDiv = function (isVisible, $div, show) { | |
| 638 | 1016 if (show == null) { |
| 628 | 1017 // toggle visibility |
| 1018 isVisible = !isVisible; | |
| 1019 } else { | |
| 1020 // set visibility | |
| 1021 isVisible = show; | |
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1022 } |
| 628 | 1023 if (isVisible) { |
| 1024 $div.fadeIn(); | |
| 1025 } else { | |
| 1026 $div.fadeOut(); | |
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1027 } |
| 628 | 1028 return isVisible; |
| 627 | 1029 }; |
| 609 | 1030 |
| 690 | 1031 // display more (or less) button sets |
| 1032 var showButtons = function (data, more, setIdx, animated) { | |
| 704 | 1033 var atime = animated ? 'fast': 0; |
| 690 | 1034 if (more) { |
| 1035 // add set | |
| 1036 var $otherSets = data.$elem.find('div.buttons:visible'); | |
| 1037 var $set; | |
| 1038 if (data.$buttonSets && data.$buttonSets[setIdx]) { | |
| 1039 // set exists | |
| 1040 $set = data.$buttonSets[setIdx]; | |
| 1041 } else { | |
| 1042 $set = createButtons(data, setIdx); | |
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1043 } |
| 690 | 1044 if ($set == null) return false; |
| 1045 var btnWidth = $set.width(); | |
| 1046 // move remaining sets left and show new set | |
| 704 | 1047 if ($otherSets.length > 0) { |
| 1048 $otherSets.animate({right : '+='+btnWidth+'px'}, atime, | |
| 1049 function () {$set.show();}); | |
| 690 | 1050 } else { |
| 1051 $set.show(); | |
| 704 | 1052 } |
| 690 | 1053 } else { |
| 1054 // remove set | |
| 1055 var $set = data.$buttonSets[setIdx]; | |
| 1056 if ($set == null) return false; | |
| 1057 var btnWidth = $set.width(); | |
| 1058 // hide last set | |
| 1059 $set.hide(); | |
| 1060 // take remaining sets and move right | |
| 1061 var $otherSets = data.$elem.find('div.buttons:visible'); | |
| 704 | 1062 $otherSets.animate({right : '-='+btnWidth+'px'}, atime); |
| 1063 } | |
| 690 | 1064 return true; |
| 1065 }; | |
| 1066 | |
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1067 // create Transform from area and $img |
| 668 | 1068 var getImgTrafo = function ($img, area, rot, hmir, vmir) { |
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1069 var picrect = geom.rectangle($img); |
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1070 var trafo = geom.transform(); |
| 668 | 1071 // move zoom area offset to center |
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1072 trafo.concat(trafo.getTranslation(geom.position(-area.x, -area.y))); |
| 668 | 1073 // scale zoom area size to [1,1] |
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1074 trafo.concat(trafo.getScale(geom.size(1/area.width, 1/area.height))); |
| 668 | 1075 // rotate and mirror (around transformed image center i.e. [0.5,0.5]) |
| 1076 if (rot || hmir || vmir) { | |
| 1077 // move [0.5,0.5] to center | |
| 1078 trafo.concat(trafo.getTranslation(geom.position(-0.5, -0.5))); | |
| 1079 if (hmir) { | |
| 1080 // mirror about center | |
| 1081 trafo.concat(trafo.getMirror('y')); | |
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1082 } |
| 668 | 1083 if (vmir) { |
| 1084 // mirror about center | |
| 1085 trafo.concat(trafo.getMirror('x')); | |
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1086 } |
| 668 | 1087 if (rot) { |
| 1088 // rotate around center | |
| 1089 trafo.concat(trafo.getRotation(parseFloat(rot))); | |
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1090 } |
| 668 | 1091 // move back |
| 1092 trafo.concat(trafo.getTranslation(geom.position(0.5, 0.5))); | |
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1093 } |
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1094 // scale to screen position and size |
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1095 trafo.concat(trafo.getScale(picrect)); |
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1096 trafo.concat(trafo.getTranslation(picrect)); |
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1097 return trafo; |
| 648 | 1098 }; |
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1099 |
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1100 // returns function for load event of scaler img |
| 629 | 1101 var scalerImgLoadedHandler = function (data) { |
| 626 | 1102 return function () { |
| 716 | 1103 var $img = $(this); |
| 620 | 1104 console.debug("img loaded! this=", this, " data=", data); |
| 1105 // create Transform from current area and picsize | |
| 668 | 1106 data.imgTrafo = getImgTrafo($img, data.zoomArea, |
| 1107 data.settings.rot, data.scalerFlags.hmir, data.scalerFlags.vmir); | |
| 679 | 1108 console.debug("imgTrafo=", data.imgTrafo); |
| 713 | 1109 // set scaler div size explicitly in case $img is hidden (for zoomDrag) |
| 1110 var $imgRect = geom.rectangle(data.$img); | |
| 1111 console.debug("imgrect=", $imgRect); | |
| 1112 $imgRect.adjustDiv(data.$scaler); | |
| 708 | 1113 // show image in case it was hidden (for example in zoomDrag) |
| 1114 $img.show(); | |
| 620 | 1115 // display marks |
| 626 | 1116 renderMarks(data); |
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1117 // TODO: digilib.showArrows(); // show arrow overlays for zoom navigation |
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1118 }; |
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1119 }; |
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1120 |
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1121 // returns function for load event of bird's eye view img |
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1122 var birdImgLoadedHandler = function (data) { |
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1123 return function () { |
| 716 | 1124 var $img = $(this); |
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1125 console.debug("birdimg loaded! this=", this, " data=", data); |
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1126 // create Transform from current area and picsize |
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1127 data.birdTrafo = getImgTrafo($img, MAX_ZOOMAREA); |
| 661 | 1128 // display red indicator around zoomarea |
| 716 | 1129 renderBirdArea(data); |
| 1130 // enable click and drag | |
| 1131 birdMoveArea(data); | |
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1132 }; |
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1133 }; |
| 626 | 1134 |
| 1135 // place marks on the image | |
| 1136 var renderMarks = function (data) { | |
| 640 | 1137 var $elem = data.$elem; |
| 636 | 1138 var marks = data.marks; |
| 642 | 1139 // TODO: clear marks first(?) |
| 626 | 1140 for (var i = 0; i < marks.length; i++) { |
| 1141 var mark = marks[i]; | |
| 636 | 1142 if (data.zoomArea.containsPosition(mark)) { |
| 626 | 1143 var mpos = data.imgTrafo.transform(mark); |
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1144 console.debug("renderMarks: mpos=",mpos); |
| 626 | 1145 // create mark |
| 1146 var html = '<div class="mark">'+(i+1)+'</div>'; | |
| 1147 var $mark = $(html); | |
| 1148 $elem.append($mark); | |
| 647 | 1149 $mark.offset({left : mpos.x, top : mpos.y}); |
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1150 } |
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1151 } |
| 626 | 1152 }; |
| 648 | 1153 |
|
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1154 // show zoom area indicator on bird's eye view |
| 716 | 1155 var renderBirdArea = function (data) { |
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1156 var $birdZoom = data.$birdZoom; |
| 652 | 1157 var zoomArea = data.zoomArea; |
| 716 | 1158 var normalSize = isFullArea(zoomArea); |
| 1159 if (normalSize) { | |
| 1160 $birdZoom.hide(); | |
| 1161 return; | |
| 1162 } else { | |
| 1163 $birdZoom.show(); | |
| 1164 } | |
| 652 | 1165 var indRect = data.birdTrafo.transform(zoomArea); |
|
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1166 var coords = { |
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1167 left : indRect.x-2, // acount for frame width |
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1168 top : indRect.y-2, |
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1169 width : indRect.width, |
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1170 height: indRect.height |
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1171 }; |
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1172 if (data.settings.interactionMode === 'fullscreen') { |
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1173 // no animation for fullscreen |
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1174 $birdZoom.width(coords.width); |
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1175 $birdZoom.height(coords.height); |
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1176 $birdZoom.offset(coords); |
| 716 | 1177 } else { |
| 1178 // nice animation for embedded mode :-) | |
| 719 | 1179 var ppos = $birdZoom.offsetParent().offset(); |
| 1180 // correct offsetParent because animate is relative | |
| 1181 coords.left = (coords.left - ppos.left) + 'px' ; | |
| 1182 coords.top = (coords.top - ppos.top) + 'px'; | |
| 718 | 1183 $birdZoom.animate(coords); |
| 716 | 1184 } |
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1185 }; |
| 652 | 1186 |
| 640 | 1187 // zooms by the given factor |
| 636 | 1188 var zoomBy = function(data, factor) { |
| 1189 var area = data.zoomArea; | |
| 1190 var newarea = area.copy(); | |
| 1191 // scale | |
| 1192 newarea.width /= factor; | |
| 1193 newarea.height /= factor; | |
| 1194 // and recenter | |
| 1195 newarea.x -= 0.5 * (newarea.width - area.width); | |
| 1196 newarea.y -= 0.5 * (newarea.height - area.height); | |
| 1197 newarea = MAX_ZOOMAREA.fit(newarea); | |
| 1198 data.zoomArea = newarea; | |
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1199 redisplay(data); |
| 636 | 1200 }; |
| 1201 | |
| 640 | 1202 // add a mark where clicked |
| 1203 var setMark = function (data) { | |
| 642 | 1204 var $scaler = data.$scaler; |
| 640 | 1205 // start event capturing |
| 642 | 1206 $scaler.one('click.digilib', function (evt) { |
| 640 | 1207 // event handler adding a new mark |
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1208 var mpos = geom.position(evt); |
| 640 | 1209 var pos = data.imgTrafo.invtransform(mpos); |
| 1210 data.marks.push(pos); | |
| 1211 redisplay(data); | |
| 642 | 1212 return false; // do we even get here? |
| 640 | 1213 }); |
| 1214 }; | |
| 661 | 1215 |
| 647 | 1216 var zoomArea = function(data) { |
| 1217 $elem = data.$elem; | |
| 1218 $scaler = data.$scaler; | |
| 1219 var pt1, pt2; | |
| 1220 var $zoomDiv = $('<div class="zoomrect" style="display:none"/>'); | |
| 1221 $elem.append($zoomDiv); | |
| 661 | 1222 $zoomDiv.css(data.settings.zoomrectStyle); |
| 647 | 1223 var picRect = geom.rectangle($scaler); |
| 1224 // FIX ME: is there a way to query the border width from CSS info? | |
| 1225 // rect.x -= 2; // account for overlay borders | |
| 1226 // rect.y -= 2; | |
| 1227 | |
| 1228 var zoomStart = function (evt) { | |
| 1229 pt1 = geom.position(evt); | |
| 1230 // setup and show zoom div | |
| 1231 //moveElement(zoomdiv, Rectangle(pt1.x, pt1.y, 0, 0)); | |
| 1232 $zoomDiv.offset({left : pt1.x, top : pt1.y}); | |
| 661 | 1233 $zoomDiv.width(0).height(0); |
| 647 | 1234 $zoomDiv.show(); |
| 1235 // register events | |
| 1236 $elem.bind("mousemove.digilib", zoomMove); | |
| 1237 $elem.bind("mouseup.digilib", zoomEnd); | |
| 1238 return false; | |
| 1239 }; | |
| 661 | 1240 |
| 647 | 1241 // mouseup handler: end moving |
| 1242 var zoomEnd = function (evt) { | |
| 1243 pt2 = geom.position(evt); | |
| 1244 // assume a click and continue if the area is too small | |
| 1245 var clickRect = geom.rectangle(pt1, pt2); | |
| 703 | 1246 if (clickRect.getArea() <= 5) return false; |
| 647 | 1247 // hide zoom div |
| 1248 $zoomDiv.remove(); | |
| 1249 // unregister events | |
| 1250 $elem.unbind("mousemove.digilib", zoomMove); | |
| 1251 $elem.unbind("mouseup.digilib", zoomEnd); | |
| 1252 // clip and transform | |
| 1253 clickRect.clipTo(picRect); | |
| 1254 var area = data.imgTrafo.invtransform(clickRect); | |
| 1255 data.zoomArea = area; | |
| 1256 // zoomed is always fit | |
| 1257 data.settings.ws = 1; | |
| 1258 redisplay(data); | |
| 1259 return false; | |
| 1260 }; | |
| 661 | 1261 |
| 647 | 1262 // mouse move handler |
| 1263 var zoomMove = function (evt) { | |
| 1264 pt2 = geom.position(evt); | |
| 1265 var rect = geom.rectangle(pt1, pt2); | |
| 1266 rect.clipTo(picRect); | |
| 1267 // update zoom div | |
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1268 rect.adjustDiv($zoomDiv); |
| 647 | 1269 return false; |
| 1270 }; | |
| 661 | 1271 |
| 647 | 1272 // bind start zoom handler |
| 1273 $scaler.one('mousedown.digilib', zoomStart); | |
| 1274 }; | |
| 640 | 1275 |
| 716 | 1276 // bird's eye view zoom area click and drag handler |
| 1277 var birdMoveArea = function(data) { | |
|
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1278 var $birdImg = data.$birdImg; |
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1279 var $birdZoom = data.$birdZoom; |
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1280 var startPos, newRect, birdImgRect, birdZoomRect; |
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1281 |
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1282 var birdZoomMove = function(evt) { |
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1283 // mousemove handler: drag |
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1284 var pos = geom.position(evt); |
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1285 var dx = pos.x - startPos.x; |
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1286 var dy = pos.y - startPos.y; |
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1287 // move birdZoom div, keeping size |
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1288 newRect = geom.rectangle( |
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1289 birdZoomRect.x + dx, |
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1290 birdZoomRect.y + dy, |
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1291 birdZoomRect.width, |
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1292 birdZoomRect.height); |
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1293 // stay within birdimage |
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1294 newRect.stayInside(birdImgRect); |
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1295 $birdZoom.offset({left : newRect.x, top : newRect.y}); |
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1296 // $birdZoom.show(); |
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1297 return false; |
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1298 }; |
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1299 |
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1300 var birdZoomEndDrag = function(evt) { |
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1301 // mouseup handler: reload page |
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1302 var settings = data.settings; |
| 673 | 1303 $(document).unbind("mousemove.digilib", birdZoomMove); |
| 1304 $(document).unbind("mouseup.digilib", birdZoomEndDrag); | |
| 1305 $birdZoom.unbind("mousemove.digilib", birdZoomMove); | |
| 1306 $birdZoom.unbind("mouseup.digilib", birdZoomEndDrag); | |
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1307 if (newRect == null) { // no movement happened |
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1308 startPos = birdZoomRect.getCenter(); |
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1309 birdZoomMove(evt); // set center to click position |
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1310 } |
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1311 if (data.zoomArea) { |
| 672 | 1312 // should always be true |
| 1313 var x = cropFloat((newRect.x - birdImgRect.x + 2) / birdImgRect.width); | |
| 1314 var y = cropFloat((newRect.y - birdImgRect.y + 2) / birdImgRect.height); | |
| 1315 data.zoomArea.x = x; | |
| 1316 data.zoomArea.y = y; | |
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1317 } |
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1318 settings.ws = 1; // zoomed is always fit |
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1319 redisplay(data); |
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1320 return false; |
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1321 }; |
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1322 |
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1323 var birdZoomStartDrag = function(evt) { |
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1324 // mousedown handler: start dragging bird zoom to a new position |
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1325 startPos = geom.position(evt); |
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1326 birdImgRect = geom.rectangle($birdImg); |
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1327 birdZoomRect = geom.rectangle($birdZoom); |
| 673 | 1328 $(document).bind("mousemove.digilib", birdZoomMove); |
| 1329 $(document).bind("mouseup.digilib", birdZoomEndDrag); | |
| 1330 $birdZoom.bind("mousemove.digilib", birdZoomMove); | |
| 1331 $birdZoom.bind("mouseup.digilib", birdZoomEndDrag); | |
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1332 return false; |
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1333 }; |
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1334 |
| 674 | 1335 $birdImg.bind("mousedown.digilib", birdZoomStartDrag); |
| 1336 $birdZoom.bind("mousedown.digilib", birdZoomStartDrag); | |
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1337 }; |
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1338 |
| 698 | 1339 var setupZoomDrag = function(data) { |
| 1340 // setup handlers for dragging the zoomed image | |
| 1341 var pt1, pt2; | |
| 1342 var dx = 0; | |
| 1343 var dy = 0; | |
| 1344 var $elem = data.$elem; | |
| 1345 var $scaler = data.$scaler; | |
| 1346 var $img = data.$img; | |
| 703 | 1347 |
| 698 | 1348 var dragStart = function (evt) { |
| 1349 // drag the image and load a new detail on mouse up | |
| 1350 // useless if not zoomed | |
| 1351 if (isFullArea(data.zoomArea)) return false; | |
| 1352 pt1 = geom.position(evt); | |
| 1353 $imgRect = geom.rectangle($img); | |
| 708 | 1354 // keep scaler div size while $img is hidden (for embedded mode) |
| 1355 $imgRect.adjustDiv($scaler); | |
| 698 | 1356 // hide the scaler image, show it as background of div instead |
| 708 | 1357 $scaler.css({ |
| 698 | 1358 'background-image' : 'url(' + $img.attr('src') + ')', |
| 1359 'background-repeat' : 'no-repeat', | |
| 699 | 1360 'background-position' : 'top left', |
| 698 | 1361 'cursor' : 'move' |
| 1362 }); | |
| 1363 $img.hide(); | |
| 1364 $(document).bind("mousemove.digilib", dragMove); | |
| 1365 $(document).bind("mouseup.digilib", dragEnd); | |
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1366 return false; |
| 698 | 1367 }; |
| 703 | 1368 |
| 698 | 1369 var dragMove = function (evt) { |
| 708 | 1370 // mousemove handler: drag zoomed image |
| 698 | 1371 var pos = geom.position(evt); |
| 1372 dx = pos.x - pt1.x; | |
| 1373 dy = pos.y - pt1.y; | |
| 1374 // move the background image to the new position | |
| 708 | 1375 $scaler.css({ |
| 698 | 1376 'background-position' : dx + "px " + dy + "px" |
| 1377 }); | |
| 1378 return false; | |
| 1379 }; | |
| 703 | 1380 |
| 698 | 1381 var dragEnd = function (evt) { |
| 708 | 1382 // mouseup handler: reload zoomed image in new position |
| 1383 $scaler.css({ | |
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1384 'background-image' : 'none', |
| 698 | 1385 'cursor' : 'default' |
| 1386 }); | |
| 1387 $(document).unbind("mousemove.digilib", dragMove); | |
| 1388 $(document).unbind("mouseup.digilib", dragEnd); | |
| 1389 // calculate relative offset | |
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1390 if (dx === 0 && dy === 0) return false; // no movement |
| 698 | 1391 // reload with scaler image showing the new ausschnitt |
|
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1392 // digilib.moveBy(x, y); |
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1393 var pos = geom.position(-dx, -dy); |
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1394 var newPos = data.imgTrafo.invtransform(pos); |
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1395 var newArea = data.zoomArea.setPt1(newPos); |
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1396 data.zoomArea = MAX_ZOOMAREA.fit(newArea); |
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1397 redisplay(data); |
| 698 | 1398 return false; |
| 1399 }; | |
| 1400 | |
| 1401 $scaler.bind("mousedown.digilib", dragStart); | |
| 1402 }; | |
| 1403 | |
| 696 | 1404 // get image quality as a number (0..2) |
| 1405 var getQuality = function (data) { | |
| 1406 var flags = data.scalerFlags; | |
| 1407 var q = flags.q2 || flags.q1 || 'q0'; // assume q0 as default | |
| 1408 return parseInt(q[1], 10); | |
| 699 | 1409 }; |
| 696 | 1410 |
| 1411 // set image quality as a number (0..2) | |
| 1412 var setQuality = function (data, qual) { | |
| 1413 var flags = data.scalerFlags; | |
| 1414 // clear flags | |
| 1415 for (var i = 0; i < 3; ++i) { | |
| 1416 delete flags['q'+i]; | |
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1417 } |
| 696 | 1418 flags['q'+qual] = 'q'+qual; |
| 699 | 1419 }; |
| 703 | 1420 |
| 643 | 1421 // sets a key to a value (relative values with +/- if relative=true) |
| 1422 var setNumValue = function(settings, key, value) { | |
| 709 | 1423 if (value == null) return null; |
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1424 if (isNumber(value)) { |
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1425 settings[key] = value; |
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1426 return value; |
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1427 } |
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1428 var sign = value[0]; |
| 643 | 1429 if (sign === '+' || sign === '-') { |
| 1430 if (settings[key] == null) { | |
|
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1431 // this isn't perfect but still... |
| 643 | 1432 settings[key] = 0; |
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1433 } |
| 643 | 1434 settings[key] = parseFloat(settings[key]) + parseFloat(value); |
| 1435 } else { | |
| 1436 settings[key] = value; | |
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1437 } |
| 643 | 1438 return settings[key]; |
| 1439 }; | |
| 648 | 1440 |
| 1441 // auxiliary function (from old dllib.js) | |
| 652 | 1442 isFullArea = function(area) { |
| 1443 return (area.width === 1.0) && (area.height === 1.0); | |
| 648 | 1444 }; |
| 1445 | |
| 634 | 1446 // auxiliary function (from Douglas Crockford, A.10) |
| 1447 var isNumber = function isNumber(value) { | |
| 703 | 1448 return typeof value === 'number' && isFinite(value); |
| 634 | 1449 }; |
| 648 | 1450 |
| 624 | 1451 // auxiliary function to crop senseless precision |
| 1452 var cropFloat = function (x) { | |
| 630 | 1453 return parseInt(10000 * x, 10) / 10000; |
| 624 | 1454 }; |
| 648 | 1455 |
| 685 | 1456 // fallback for console.log calls |
| 1457 if (customConsole) { | |
| 1458 var logFunction = function(type) { | |
| 1459 return function(){ | |
| 1460 var $debug = $('#debug'); // debug div | |
| 1461 if (!$debug) return; | |
| 1462 var args = Array.prototype.slice.call(arguments); | |
| 1463 var argtext = args.join(' '); | |
| 1464 var $logDiv = $('<div/>'); | |
| 1465 $logDiv.addClass(type); | |
| 1466 $logDiv.text(argtext); | |
| 1467 $debug.append($logDiv); | |
| 1468 }; | |
| 1469 }; | |
| 1470 console.log = logFunction('_log'); | |
| 1471 console.debug = logFunction('_debug'); | |
| 1472 console.error = logFunction('_error'); | |
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1473 } |
| 685 | 1474 |
| 598 | 1475 // hook plugin into jquery |
|
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1476 $.fn.digilib = function(action) { |
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1477 if (actions[action]) { |
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|
1478 // call action on this with the remaining arguments (inserting data as first argument) |
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1479 var $elem = $(this); |
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renamed 'actions' to 'buttons' and 'methods' to 'actions'
robcast
parents:
643
diff
changeset
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1480 var data = $elem.data('digilib'); |
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bffc7d8c3641
renamed 'actions' to 'buttons' and 'methods' to 'actions'
robcast
parents:
643
diff
changeset
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1481 var args = Array.prototype.slice.call(arguments, 1); |
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bffc7d8c3641
renamed 'actions' to 'buttons' and 'methods' to 'actions'
robcast
parents:
643
diff
changeset
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1482 args.unshift(data); |
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bffc7d8c3641
renamed 'actions' to 'buttons' and 'methods' to 'actions'
robcast
parents:
643
diff
changeset
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1483 return actions[action].apply(this, args); |
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bffc7d8c3641
renamed 'actions' to 'buttons' and 'methods' to 'actions'
robcast
parents:
643
diff
changeset
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1484 } else if (typeof(action) === 'object' || !action) { |
| 627 | 1485 // call init on this |
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644
bffc7d8c3641
renamed 'actions' to 'buttons' and 'methods' to 'actions'
robcast
parents:
643
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changeset
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1486 return actions.init.apply(this, arguments); |
| 598 | 1487 } else { |
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706
498f9c7487ae
more cosmetics: added options to validate with http://www.jslint.com
robcast
parents:
704
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changeset
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1488 $.error('action ' + action + ' does not exist on jQuery.digilib'); |
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498f9c7487ae
more cosmetics: added options to validate with http://www.jslint.com
robcast
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changeset
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1489 } |
| 598 | 1490 }; |
| 685 | 1491 |
| 597 | 1492 })(jQuery); |