Mercurial > hg > digilib-old
annotate client/digitallibrary/jquery/jquery.digilib.js @ 723:123706249227 jquery
improved bird image handling.
still some issues with bird image position in embedded mode.
| author | robcast |
|---|---|
| date | Mon, 31 Jan 2011 16:24:31 +0100 |
| parents | 3da6db751448 |
| children | c6878e9575fe |
| 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 /** |
| 604 | 21 * digilib jQuery plugin |
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22 * |
| 604 | 23 */ |
| 655 | 24 |
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25 /*jslint browser: true, debug: true, forin: true */ |
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26 |
| 636 | 27 // fallback for console.log calls |
| 28 if (typeof(console) === 'undefined') { | |
| 29 var console = { | |
| 692 | 30 log : function(){}, |
| 31 debug : function(){}, | |
| 32 error : function(){} | |
| 33 }; | |
| 34 var customConsole = true; | |
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35 } |
| 604 | 36 |
| 37 (function($) { | |
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38 var buttons = { |
| 610 | 39 reference : { |
| 689 | 40 onclick : "reference", |
| 610 | 41 tooltip : "get a reference URL", |
| 42 img : "reference.png" | |
| 43 }, | |
| 44 zoomin : { | |
| 643 | 45 onclick : ["zoomBy", 1.4], |
| 610 | 46 tooltip : "zoom in", |
| 47 img : "zoom-in.png" | |
| 48 }, | |
| 49 zoomout : { | |
| 643 | 50 onclick : ["zoomBy", 0.7], |
| 610 | 51 tooltip : "zoom out", |
| 52 img : "zoom-out.png" | |
| 53 }, | |
| 54 zoomarea : { | |
| 654 | 55 onclick : "zoomArea", |
| 610 | 56 tooltip : "zoom area", |
| 57 img : "zoom-area.png" | |
| 58 }, | |
| 59 zoomfull : { | |
| 650 | 60 onclick : "zoomFull", |
| 610 | 61 tooltip : "view the whole image", |
| 62 img : "zoom-full.png" | |
| 63 }, | |
| 64 pagewidth : { | |
| 650 | 65 onclick : ["zoomFull", "width"], |
| 610 | 66 tooltip : "page width", |
| 67 img : "pagewidth.png" | |
| 68 }, | |
| 69 back : { | |
| 623 | 70 onclick : ["gotoPage", "-1"], |
| 610 | 71 tooltip : "goto previous image", |
| 72 img : "back.png" | |
| 73 }, | |
| 74 fwd : { | |
| 623 | 75 onclick : ["gotoPage", "+1"], |
| 610 | 76 tooltip : "goto next image", |
| 77 img : "fwd.png" | |
| 78 }, | |
| 79 page : { | |
| 716 | 80 onclick : "gotoPage", |
| 81 tooltip : "goto image number", | |
| 610 | 82 img : "page.png" |
| 83 }, | |
| 84 bird : { | |
| 635 | 85 onclick : "showBirdDiv", |
| 610 | 86 tooltip : "show bird's eye view", |
| 87 img : "birds-eye.png" | |
| 88 }, | |
| 89 help : { | |
| 635 | 90 onclick : "showAboutDiv", |
| 610 | 91 tooltip : "about Digilib", |
| 92 img : "help.png" | |
| 93 }, | |
| 94 reset : { | |
| 688 | 95 onclick : "reset", |
| 610 | 96 tooltip : "reset image", |
| 97 img : "reset.png" | |
| 98 }, | |
| 99 mark : { | |
| 647 | 100 onclick : "setMark", |
| 610 | 101 tooltip : "set a mark", |
| 102 img : "mark.png" | |
| 103 }, | |
| 104 delmark : { | |
| 650 | 105 onclick : "removeMark", |
| 610 | 106 tooltip : "delete the last mark", |
| 107 img : "delmark.png" | |
| 108 }, | |
| 109 hmir : { | |
| 661 | 110 onclick : ["mirror", "h"], |
| 610 | 111 tooltip : "mirror horizontally", |
| 112 img : "mirror-horizontal.png" | |
| 113 }, | |
| 114 vmir : { | |
| 661 | 115 onclick : ["mirror", "v"], |
| 610 | 116 tooltip : "mirror vertically", |
| 117 img : "mirror-vertical.png" | |
| 118 }, | |
| 119 rot : { | |
| 663 | 120 onclick : "rotate", |
| 610 | 121 tooltip : "rotate image", |
| 122 img : "rotate.png" | |
| 123 }, | |
| 124 brgt : { | |
| 663 | 125 onclick : "brightness", |
| 610 | 126 tooltip : "set brightness", |
| 127 img : "brightness.png" | |
| 128 }, | |
| 129 cont : { | |
| 663 | 130 onclick : "contrast", |
| 610 | 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 : { | |
| 703 | 140 onclick : "setquality", |
| 610 | 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 }, | |
| 699 | 159 toggleoptions : { |
| 160 onclick : "morebuttons", | |
| 161 tooltip : "more options", | |
| 162 img : "options.png" | |
| 163 }, | |
| 690 | 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", | |
| 610 | 172 img : "options.png" |
| 173 }, | |
| 174 SEP : { | |
| 175 img : "sep.png" | |
| 176 } | |
| 177 }; | |
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178 |
| 605 | 179 var defaults = { |
| 616 | 180 // version of this script |
| 635 | 181 'version' : 'jquery.digilib.js 0.9', |
| 616 | 182 // logo url |
| 183 'logoUrl' : '../img/digilib-logo-text1.png', | |
| 635 | 184 // homepage url (behind logo) |
| 185 'homeUrl' : 'http://digilib.berlios.de', | |
| 610 | 186 // base URL to Scaler servlet |
| 652 | 187 'scalerBaseUrl' : null, |
| 610 | 188 // list of Scaler parameters |
| 627 | 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 | |
| 643 | 192 'pn' : 1, |
| 627 | 193 'ww' : 1.0, |
| 194 'wh' : 1.0, | |
| 195 'wx' : 0.0, | |
| 196 'wy' : 0.0, | |
| 197 'ws' : 1.0, | |
| 643 | 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 |
| 650 | 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 |
| 643 | 210 'mk' : '', |
| 650 | 211 'clop' : '', |
| 643 | 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 | |
| 610 | 215 'interactionMode' : 'fullscreen', |
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216 // buttons |
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217 'buttons' : buttons, |
| 668 | 218 // defaults for digilib buttons |
| 665 | 219 'buttonSettings' : { |
| 220 'fullscreen' : { | |
| 668 | 221 // path to button images (must end with a slash) |
| 665 | 222 'imagePath' : 'img/fullscreen/', |
| 699 | 223 'standardSet' : ["reference","zoomin","zoomout","zoomarea","zoomfull","pagewidth","back","fwd","page","bird","SEP","help","reset","toggleoptions"], |
| 224 'specialSet' : ["mark","delmark","hmir","vmir","rot","brgt","cont","rgb","quality","size","calibrationx","scale","SEP","toggleoptions"], | |
| 682 | 225 'buttonSets' : ['standardSet', 'specialSet'] |
| 665 | 226 }, |
| 227 'embedded' : { | |
| 228 'imagePath' : 'img/embedded/16/', | |
| 699 | 229 'standardSet' : ["reference","zoomin","zoomout","zoomarea","zoomfull","back","fwd","page","bird","SEP","help","reset","toggleoptions"], |
| 230 'specialSet' : ["hmir","vmir","rot","brgt","cont","rgb","quality","size","SEP","toggleoptions"], | |
| 682 | 231 'buttonSets' : ['standardSet', 'specialSet'] |
| 665 | 232 } |
| 697 | 233 }, |
| 234 // number of visible button groups | |
| 235 'visibleButtonSets' : 1, | |
| 616 | 236 // is birdView shown? |
| 237 'isBirdDivVisible' : false, | |
| 668 | 238 // dimensions of bird's eye div |
| 674 | 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'], |
| 668 | 243 // style of the zoom area indicator in the bird's eye div |
| 659 | 244 'birdIndicatorStyle' : {'border' : '2px solid #ff0000' }, |
| 668 | 245 // style of zoom area "rubber band" |
| 246 'zoomrectStyle' : {'border' : '2px solid #ff0000' }, | |
| 616 | 247 // is the "about" window shown? |
| 248 'isAboutDivVisible' : false | |
| 249 | |
| 610 | 250 }; |
| 655 | 251 |
| 608 | 252 // affine geometry classes |
| 253 var geom = dlGeometry(); | |
| 655 | 254 |
| 643 | 255 var MAX_ZOOMAREA = geom.rectangle(0, 0, 1, 1); |
| 655 | 256 |
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257 var actions = { |
| 668 | 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'; | |
| 652 | 276 } |
| 277 } | |
| 636 | 278 } |
| 668 | 279 } |
| 280 return this.each(function() { | |
| 281 var $elem = $(this); | |
| 282 var data = $elem.data('digilib'); | |
| 688 | 283 var params, elemSettings; |
| 668 | 284 // if the plugin hasn't been initialized yet |
| 285 if (!data) { | |
| 286 // merge query parameters | |
| 287 if (isFullscreen) { | |
| 688 | 288 params = queryParams; |
| 668 | 289 } else { |
| 688 | 290 params = parseImgParams($elem); |
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291 } |
| 668 | 292 // store $(this) element in the settings |
| 688 | 293 elemSettings = $.extend({}, settings, params); |
| 697 | 294 data = { |
| 668 | 295 $elem : $elem, |
| 296 settings : elemSettings, | |
| 688 | 297 queryParams : params |
| 668 | 298 }; |
| 299 // store in data element | |
| 300 $elem.data('digilib', data); | |
| 301 } | |
| 302 unpackParams(data); | |
| 682 | 303 // create HTML structure for scaler |
| 668 | 304 setupScalerDiv(data); |
| 697 | 305 // add buttons |
| 306 for (var i = 0; i < elemSettings.visibleButtonSets; ++i) { | |
| 307 showButtons(data, true, i); | |
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308 } |
| 668 | 309 // bird's eye view creation |
| 710 | 310 if (elemSettings.isBirdDivVisible) { |
| 638 | 311 setupBirdDiv(data); |
| 723 | 312 data.$birdDiv.show(); |
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313 } |
| 668 | 314 // about window creation - TODO: could be deferred? restrict to only one item? |
| 315 setupAboutDiv(data); | |
| 710 | 316 // TODO: the actual moving code |
| 707 | 317 setupZoomDrag(data); |
| 668 | 318 }); |
| 319 }, | |
| 320 | |
| 321 // destroy: clean up digilib | |
| 322 destroy : function(data) { | |
| 323 return this.each(function(){ | |
| 324 var $elem = $(this); | |
| 325 $(window).unbind('.digilib'); // unbind all digilibs(?) | |
| 326 data.digilib.remove(); | |
| 327 $elem.removeData('digilib'); | |
| 328 }); | |
| 329 }, | |
| 330 | |
| 331 // show or hide the 'about' window | |
| 332 showAboutDiv : function(data, show) { | |
| 333 data.settings.isAboutDivVisible = showDiv(data.settings.isAboutDivVisible, data.$aboutDiv, show); | |
| 334 }, | |
| 655 | 335 |
| 668 | 336 // event handler: toggles the visibility of the bird's eye window |
| 337 showBirdDiv : function (data, show) { | |
| 338 if (data.$birdDiv == null) { | |
| 339 // no bird div -> create | |
| 340 setupBirdDiv(data); | |
| 341 } | |
| 342 data.settings.isBirdDivVisible = showDiv(data.settings.isBirdDivVisible, data.$birdDiv, show); | |
| 723 | 343 storeOptions(data); |
| 344 // data.$birdImg.triggerHandler('load'); // TODO: we shouldn't do that | |
| 668 | 345 }, |
| 346 | |
| 347 // goto given page nr (+/-: relative) | |
| 348 gotoPage : function (data, pageNr) { | |
| 349 var settings = data.settings; | |
| 350 var oldpn = settings.pn; | |
| 716 | 351 if (pageNr == null) { |
| 352 pageNr = window.prompt("Goto page number", oldpn); | |
| 353 } | |
| 668 | 354 var pn = setNumValue(settings, "pn", pageNr); |
| 355 if (pn == null) return false; // nothing happened | |
| 356 if (pn < 1) { | |
| 357 alert("no such page (page number too low)"); | |
| 358 settings.pn = oldpn; | |
| 359 return false; | |
| 360 } | |
| 361 if (settings.pt) { | |
| 362 if (pn > settings.pt) { | |
| 363 alert("no such page (page number too high)"); | |
| 623 | 364 settings.pn = oldpn; |
| 365 return false; | |
| 634 | 366 } |
| 668 | 367 } |
| 368 // reset mk and others(?) | |
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369 // TODO: adjust bird div |
| 668 | 370 data.marks = []; |
| 371 data.zoomArea = MAX_ZOOMAREA; | |
| 372 // then reload | |
| 373 redisplay(data); | |
| 374 }, | |
| 654 | 375 |
| 668 | 376 // zoom by a given factor |
| 377 zoomBy : function (data, factor) { | |
| 378 zoomBy(data, factor); | |
| 379 }, | |
| 647 | 380 |
| 668 | 381 // zoom interactively |
| 382 zoomArea : function (data) { | |
| 383 zoomArea(data); | |
| 384 }, | |
| 650 | 385 |
| 668 | 386 // zoom out to full page |
| 387 zoomFull : function (data, mode) { | |
| 388 data.zoomArea = MAX_ZOOMAREA; | |
| 389 if (mode === 'width') { | |
| 390 data.dlOpts.fitwidth = 1; | |
| 391 delete data.dlOpts.fitheight; | |
| 392 } else if (mode === 'height') { | |
| 393 data.dlOpts.fitheight = 1; | |
| 394 delete data.dlOpts.fitwidth; | |
| 395 } else { | |
| 396 delete data.dlOpts.fitwidth; | |
| 397 delete data.dlOpts.fitheight; | |
| 398 } | |
| 399 redisplay(data); | |
| 400 }, | |
| 401 | |
| 402 // set a mark by clicking (or giving a position) | |
| 403 setMark : function (data, mpos) { | |
| 404 if (mpos == null) { | |
| 405 // interactive | |
| 406 setMark(data); | |
| 407 } else { | |
| 408 // use position | |
| 409 data.marks.push(pos); | |
| 663 | 410 redisplay(data); |
| 604 | 411 } |
| 668 | 412 }, |
| 413 | |
| 414 // remove the last mark | |
| 415 removeMark : function (data) { | |
| 416 data.marks.pop(); | |
| 417 redisplay(data); | |
| 418 }, | |
| 419 | |
| 420 // mirror the image | |
| 421 mirror : function (data, mode) { | |
| 422 var flags = data.scalerFlags; | |
| 423 if (mode === 'h') { | |
| 424 if (flags.hmir) { | |
| 425 delete flags.hmir; | |
| 426 } else { | |
| 427 flags.hmir = 1; | |
| 428 } | |
| 429 } else { | |
| 430 if (flags.vmir) { | |
| 431 delete flags.vmir; | |
| 432 } else { | |
| 433 flags.vmir = 1; | |
| 434 } | |
| 435 } | |
| 436 redisplay(data); | |
| 437 }, | |
| 650 | 438 |
| 668 | 439 // rotate the image |
| 440 rotate : function (data, angle) { | |
| 441 var rot = data.settings.rot; | |
| 442 if (angle == null) { | |
| 443 angle = window.prompt("Rotation angle:", rot); | |
| 444 } | |
| 445 data.settings.rot = angle; | |
| 446 redisplay(data); | |
| 447 }, | |
| 448 | |
| 449 // change brightness | |
| 450 brightness : function (data, factor) { | |
| 451 var brgt = data.settings.brgt; | |
| 452 if (factor == null) { | |
| 453 factor = window.prompt("Brightness (-255..255)", brgt); | |
| 454 } | |
| 455 data.settings.brgt = factor; | |
| 456 redisplay(data); | |
| 457 }, | |
| 458 | |
| 459 // change contrast | |
| 460 contrast : function (data, factor) { | |
| 461 var cont = data.settings.cont; | |
| 462 if (factor == null) { | |
| 463 factor = window.prompt("Contrast (-8, 8)", cont); | |
| 464 } | |
| 465 data.settings.cont = factor; | |
| 466 redisplay(data); | |
| 688 | 467 }, |
| 710 | 468 |
| 690 | 469 // display more (or less) button sets |
| 470 morebuttons : function (data, more) { | |
| 696 | 471 var settings = data.settings; |
| 699 | 472 if (more == null) { |
| 703 | 473 // toggle more or less (only works for 2 sets) |
| 699 | 474 var maxbtns = settings.buttonSettings[settings.interactionMode].buttonSets.length; |
| 475 if (settings.visibleButtonSets >= maxbtns) { | |
| 476 more = '-1'; | |
| 477 } else { | |
| 478 more = '+1'; | |
| 479 } | |
| 480 } | |
| 690 | 481 if (more === '-1') { |
| 482 // remove set | |
| 697 | 483 var setIdx = settings.visibleButtonSets - 1; |
| 484 if (showButtons(data, false, setIdx, true)) { | |
| 485 settings.visibleButtonSets--; | |
| 486 } | |
| 690 | 487 } else { |
| 488 // add set | |
| 697 | 489 var setIdx = settings.visibleButtonSets; |
| 490 if (showButtons(data, true, setIdx, true)) { | |
| 491 settings.visibleButtonSets++; | |
| 690 | 492 } |
| 493 } | |
| 723 | 494 // persist setting |
| 495 storeOptions(data); | |
| 691 | 496 }, |
| 688 | 497 |
| 703 | 498 // reset image parameters to defaults |
| 688 | 499 reset : function (data) { |
| 500 var settings = data.settings; | |
| 501 var paramNames = settings.digilibParamNames; | |
| 502 var params = data.queryParams; | |
| 709 | 503 // resets zoomArea, marks, scalerflags |
| 688 | 504 resetData(data); |
| 505 // delete all digilib parameters | |
| 506 for (var i = 0; i < paramNames.length; i++) { | |
| 507 var paramName = paramNames[i]; | |
| 508 delete settings[paramName]; | |
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509 } |
| 688 | 510 // fullscreen: restore only fn/pn parameters |
| 511 if (settings.interactionMode === 'fullscreen') { | |
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512 settings.fn = params.fn || ''; // no default defined |
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513 settings.pn = params.pn || defaults.pn; |
| 688 | 514 // embedded: restore original parameters |
| 515 } else { | |
| 516 $.extend(settings, params); | |
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517 } |
| 709 | 518 // TODO: should we really reset all user preferences here? |
| 519 settings.isBirdDivVisible = false; | |
| 520 settings.visibleButtonSets = 1; | |
| 712 | 521 delete data.dlOpts.fitwidth; |
| 522 delete data.dlOpts.fitheight; | |
| 688 | 523 redisplay(data); |
| 689 | 524 }, |
| 525 | |
| 703 | 526 // presents a reference url (returns value if noprompt) |
| 527 reference : function (data, noprompt) { | |
| 689 | 528 var settings = data.settings; |
| 529 var url; | |
| 530 if (settings.interactionMode === 'fullscreen') { | |
| 531 url = getDigilibUrl(data); | |
| 532 } else { | |
| 533 url = getScalerUrl(data); | |
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534 } |
| 703 | 535 if (noprompt == null) { |
| 536 window.prompt("URL reference to the current view", url); | |
| 537 } | |
| 538 return url; | |
| 539 }, | |
| 710 | 540 |
| 703 | 541 // set image quality |
| 542 setquality : function (data, qual) { | |
| 543 var oldq = getQuality(data); | |
| 544 if (qual == null) { | |
| 545 qual = window.prompt("Image quality (0..2)", oldq); | |
| 546 } | |
| 547 qual = parseInt(qual, 10); | |
| 548 if (qual >= 0 && qual <= 2) { | |
| 549 setQuality(data, qual); | |
| 550 redisplay(data); | |
| 551 } | |
| 668 | 552 } |
| 605 | 553 }; |
| 604 | 554 |
| 608 | 555 // returns parameters from page url |
| 607 | 556 var parseQueryParams = function() { |
| 636 | 557 return parseQueryString(window.location.search.slice(1)); |
| 558 }; | |
| 655 | 559 |
| 636 | 560 // returns parameters from embedded img-element |
| 607 | 561 var parseImgParams = function($elem) { |
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562 var src = $elem.find('img').first().attr('src'); |
| 710 | 563 if (!src) return null; |
| 607 | 564 var pos = src.indexOf('?'); |
| 565 var query = (pos < 0) ? '' : src.substring(pos + 1); | |
| 566 var scalerUrl = src.substring(0, pos); | |
| 627 | 567 var params = parseQueryString(query); |
| 568 params.scalerBaseUrl = scalerUrl; | |
| 569 return params; | |
| 636 | 570 }; |
| 607 | 571 |
| 608 | 572 // parses query parameter string into parameter object |
| 607 | 573 var parseQueryString = function(query) { |
| 701 | 574 var params = {}; |
| 575 if (query == null) return params; | |
| 607 | 576 var pairs = query.split("&"); |
| 636 | 577 //var keys = []; |
| 607 | 578 for (var i = 0; i < pairs.length; i++) { |
| 579 var pair = pairs[i].split("="); | |
| 580 if (pair.length === 2) { | |
| 627 | 581 params[pair[0]] = pair[1]; |
| 636 | 582 //keys.push(pair[0]); |
| 634 | 583 } |
| 636 | 584 } |
| 627 | 585 return params; |
| 636 | 586 }; |
| 668 | 587 |
| 643 | 588 // returns a query string from key names from a parameter hash (ignoring if the same value is in defaults) |
| 589 var getParamString = function (settings, keys, defaults) { | |
| 615 | 590 var paramString = ''; |
| 650 | 591 var nx = false; |
| 615 | 592 for (i = 0; i < keys.length; ++i) { |
| 593 var key = keys[i]; | |
| 663 | 594 if ((settings[key] != null) && ((defaults == null) || (settings[key] != defaults[key]))) { |
| 615 | 595 // first param gets no '&' |
| 650 | 596 if (nx) { |
| 597 paramString += '&'; | |
| 598 } else { | |
| 599 nx = true; | |
| 600 } | |
| 615 | 601 // add parm=val |
| 602 paramString += key + '=' + settings[key]; | |
| 643 | 603 } |
| 615 | 604 } |
| 605 return paramString; | |
| 631 | 606 }; |
| 607 | |
| 636 | 608 // returns URL and query string for Scaler |
| 609 var getScalerUrl = function (data) { | |
| 653 | 610 var settings = data.settings; |
| 652 | 611 if (settings.scalerBaseUrl == null) { |
| 612 alert("ERROR: URL of digilib Scaler servlet missing!"); | |
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613 } |
| 665 | 614 packParams(data); |
| 636 | 615 var keys = settings.scalerParamNames; |
| 643 | 616 var queryString = getParamString(settings, keys, defaults); |
| 636 | 617 var url = settings.scalerBaseUrl + '?' + queryString; |
| 618 return url; | |
| 619 }; | |
| 620 | |
| 621 // returns URL and query string for current digilib | |
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622 var getDigilibUrl = function (data) { |
| 643 | 623 packParams(data); |
| 636 | 624 var settings = data.settings; |
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625 var queryString = getParamString(settings, settings.digilibParamNames, defaults); |
| 636 | 626 var url = window.location.toString(); |
| 627 var pos = url.indexOf('?'); | |
| 628 var baseUrl = url.substring(0, pos); | |
| 629 var newurl = baseUrl + '?' + queryString; | |
| 630 return newurl; | |
| 631 }; | |
| 632 | |
| 655 | 633 // processes some parameters into objects and stuff |
| 631 | 634 var unpackParams = function (data) { |
| 635 var settings = data.settings; | |
| 636 | 636 // zoom area |
| 631 | 637 var zoomArea = geom.rectangle(settings.wx, settings.wy, settings.ww, settings.wh); |
| 643 | 638 data.zoomArea = zoomArea; |
| 636 | 639 // marks |
| 631 | 640 var marks = []; |
| 650 | 641 if (settings.mk) { |
| 642 var mk = settings.mk; | |
| 643 if (mk.indexOf(";") >= 0) { | |
| 644 var pa = mk.split(";"); // old format with ";" | |
| 645 } else { | |
| 646 var pa = mk.split(","); // new format | |
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647 } |
| 650 | 648 for (var i = 0; i < pa.length ; i++) { |
| 649 var pos = pa[i].split("/"); | |
| 650 if (pos.length > 1) { | |
| 651 marks.push(geom.position(pos[0], pos[1])); | |
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652 } |
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653 } |
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654 } |
| 643 | 655 data.marks = marks; |
| 650 | 656 // mo (Scaler flags) |
| 657 var flags = {}; | |
| 658 if (settings.mo) { | |
| 659 var pa = settings.mo.split(","); | |
| 660 for (var i = 0; i < pa.length ; i++) { | |
| 661 flags[pa[i]] = pa[i]; | |
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662 } |
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663 } |
| 650 | 664 data.scalerFlags = flags; |
| 723 | 665 retrieveOptions(data); |
| 655 | 666 }; |
| 667 | |
| 631 | 668 // put objects back into parameters |
| 669 var packParams = function (data) { | |
| 670 var settings = data.settings; | |
| 636 | 671 // zoom area |
| 643 | 672 if (data.zoomArea) { |
| 647 | 673 settings.wx = cropFloat(data.zoomArea.x); |
| 674 settings.wy = cropFloat(data.zoomArea.y); | |
| 675 settings.ww = cropFloat(data.zoomArea.width); | |
| 676 settings.wh = cropFloat(data.zoomArea.height); | |
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677 } |
| 636 | 678 // marks |
| 643 | 679 if (data.marks) { |
| 650 | 680 settings.mk = ''; |
| 643 | 681 for (var i = 0; i < data.marks.length; i++) { |
| 650 | 682 if (i) { |
| 683 settings.mk += ','; | |
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684 } |
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685 settings.mk += cropFloat(data.marks[i].x).toString() + |
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686 '/' + cropFloat(data.marks[i].y).toString(); |
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687 } |
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688 } |
| 650 | 689 // Scaler flags |
| 690 if (data.scalerFlags) { | |
| 691 var mo = ''; | |
| 692 for (var f in data.scalerFlags) { | |
| 693 if (mo) { | |
| 694 mo += ','; | |
| 695 } | |
| 696 mo += f; | |
| 697 } | |
| 698 settings.mo = mo; | |
| 699 } | |
| 710 | 700 // user interface options |
| 723 | 701 storeOptions(data); |
| 709 | 702 }; |
| 688 | 703 |
| 723 | 704 var storeOptions = function (data) { |
| 701 | 705 // save digilib options in cookie |
| 709 | 706 // TODO: in embedded mode this is not called |
| 701 | 707 /* store in parameter clop |
| 708 * if (data.dlOpts) { | |
| 709 var clop = ''; | |
| 710 for (var o in data.dlOpts) { | |
| 711 if (clop) { | |
| 650 | 712 clop += ','; |
| 713 } | |
| 714 clop += o; | |
| 715 } | |
| 716 settings.clop = clop; | |
| 701 | 717 } */ |
| 709 | 718 var settings = data.settings; |
| 719 if (data.dlOpts) { | |
| 720 // save digilib settings in options | |
| 721 data.dlOpts.birdview = settings.isBirdDivVisible ? 1 : 0; | |
| 722 data.dlOpts.buttons = settings.visibleButtonSets; | |
| 723 var clop = ''; | |
| 724 for (var o in data.dlOpts) { | |
| 725 if (clop) { | |
| 726 clop += '&'; | |
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727 } |
| 709 | 728 clop += o + '=' + data.dlOpts[o]; |
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729 } |
| 709 | 730 if (jQuery.cookie) { |
| 731 var ck = "digilib:fn:" + escape(settings.fn) + ":pn:" + settings.pn; | |
| 732 console.debug("set cookie=", ck, " value=", clop); | |
| 733 jQuery.cookie(ck, clop); | |
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734 } |
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735 } |
| 631 | 736 }; |
| 655 | 737 |
| 723 | 738 var retrieveOptions = function (data) { |
| 709 | 739 // clop (digilib options) |
| 740 var opts = {}; | |
| 741 var settings = data.settings; | |
| 742 if (jQuery.cookie) { | |
| 743 /* read from parameter clop | |
| 744 * if (settings.clop) { | |
| 745 var pa = settings.clop.split(","); | |
| 746 for (var i = 0; i < pa.length ; i++) { | |
| 747 opts[pa[i]] = pa[i]; | |
| 748 } | |
| 749 } */ | |
| 750 // read from cookie | |
| 751 var ck = "digilib:fn:" + escape(settings.fn) + ":pn:" + settings.pn; | |
| 752 var cp = jQuery.cookie(ck); | |
| 753 console.debug("get cookie=", ck, " value=", cp); | |
| 754 // in query string format | |
| 755 opts = parseQueryString(cp); | |
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756 } |
| 709 | 757 data.dlOpts = opts; |
| 758 // birdview option | |
| 759 if (opts.birdview != null) { | |
| 760 settings.isBirdDivVisible = opts.birdview === '1'; | |
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761 } |
| 709 | 762 // visible button sets |
| 763 if (opts.buttons != null) { | |
| 764 settings.visibleButtonSets = opts.buttons; | |
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765 } |
| 711 | 766 }; |
| 709 | 767 |
| 688 | 768 // clear digilib data for reset |
| 769 var resetData = function (data) { | |
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770 // TODO: we should reset instead of delete |
| 688 | 771 if (data.zoomArea) delete data.zoomArea; |
| 772 if (data.marks) delete data.marks; | |
| 773 if (data.scalerFlags) delete data.scalerFlags; | |
| 774 }; | |
| 775 | |
| 622 | 776 // (re)load the img from a new scaler URL |
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777 var redisplay = function (data) { |
| 636 | 778 var settings = data.settings; |
| 779 if (settings.interactionMode === 'fullscreen') { | |
| 780 // update location.href (browser URL) in fullscreen mode | |
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781 var url = getDigilibUrl(data); |
| 636 | 782 var history = window.history; |
| 783 if (typeof(history.pushState) === 'function') { | |
| 784 console.debug("we could modify history, but we don't..."); | |
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785 } |
| 636 | 786 window.location = url; |
| 787 } else { | |
| 788 // embedded mode -- just change img src | |
| 789 var url = getScalerUrl(data); | |
| 790 data.$img.attr('src', url); | |
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791 // set scaler div size explicitly in case $img is hidden (for zoomDrag) |
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792 $imgRect = geom.rectangle(data.$img); |
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793 $imgRect.adjustDiv(data.$scaler); |
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794 // load new bird img (in case the scalerUrl has changed, like in gotopage) |
| 723 | 795 //showBirdDiv(data); //TODO: change url explicitly |
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796 } |
| 622 | 797 }; |
| 798 | |
| 662 | 799 // returns maximum size for scaler img in fullscreen mode |
| 800 var getFullscreenImgSize = function($elem) { | |
| 801 var $win = $(window); | |
| 802 var winH = $win.height(); | |
| 803 var winW = $win.width(); | |
| 804 // TODO: account for borders? | |
| 805 return geom.size(winW, winH); | |
| 806 }; | |
| 807 | |
| 608 | 808 // creates HTML structure for digilib in elem |
| 627 | 809 var setupScalerDiv = function (data) { |
| 810 var settings = data.settings; | |
| 647 | 811 var $elem = data.$elem; |
| 686 | 812 var $img, scalerUrl; |
| 813 // fullscreen | |
| 608 | 814 if (settings.interactionMode === 'fullscreen') { |
| 609 | 815 var imgSize = getFullscreenImgSize($elem); |
| 650 | 816 // fitwidth/height omits destination height/width |
| 715 | 817 // if (data.dlOpts['fitheight'] !== '1') { |
| 818 if (data.dlOpts['fitheight'] == null) { | |
| 650 | 819 settings.dw = imgSize.width; |
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820 } |
| 715 | 821 // if (data.dlOpts['fitwidth'] !== '1') { |
| 822 if (data.dlOpts['fitwidth'] == null) { | |
| 650 | 823 settings.dh = imgSize.height; |
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824 } |
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825 $img = $('<img/>'); |
| 686 | 826 scalerUrl = getScalerUrl(data); |
| 827 // embedded mode -- try to keep img tag | |
| 609 | 828 } else { |
| 623 | 829 $img = $elem.find('img'); |
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830 if ($img.length > 0) { |
| 686 | 831 console.debug("img detach:", $img); |
| 832 scalerUrl = $img.attr('src'); | |
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833 $img.detach(); |
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834 } else { |
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835 $img = $('<img/>'); |
| 686 | 836 scalerUrl = getScalerUrl(data); |
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837 } |
| 608 | 838 } |
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839 // create new html |
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840 $elem.empty(); // TODO: should we keep stuff for customization? |
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841 var $scaler = $('<div class="scaler"/>'); |
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842 $elem.append($scaler); |
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843 $scaler.append($img); |
| 622 | 844 $img.addClass('pic'); |
| 649 | 845 data.$scaler = $scaler; |
| 636 | 846 data.$img = $img; |
| 687 | 847 // setup image load handler before setting the src attribute (IE bug) |
| 848 $img.load(scalerImgLoadedHandler(data)); | |
| 849 $img.attr('src', scalerUrl); | |
| 715 | 850 // set scaler div size explicitly in case $img is hidden (for zoomDrag) |
| 851 $imgRect = geom.rectangle($img); | |
| 852 $imgRect.adjustDiv(data.$scaler); | |
| 608 | 853 }; |
| 615 | 854 |
| 610 | 855 // creates HTML structure for buttons in elem |
| 697 | 856 var createButtons = function (data, buttonSetIdx) { |
| 647 | 857 var $elem = data.$elem; |
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858 var settings = data.settings; |
| 665 | 859 var mode = settings.interactionMode; |
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860 var buttonSettings = settings.buttonSettings[mode]; |
| 682 | 861 var buttonGroup = buttonSettings.buttonSets[buttonSetIdx]; |
| 690 | 862 if (buttonGroup == null) { |
| 863 // no buttons here | |
| 864 return; | |
| 865 } | |
| 866 var $buttonsDiv = $('<div class="buttons"/>'); | |
| 682 | 867 var buttonNames = buttonSettings[buttonGroup]; |
| 868 for (var i = 0; i < buttonNames.length; i++) { | |
| 869 var buttonName = buttonNames[i]; | |
| 870 var buttonConfig = settings.buttons[buttonName]; | |
| 665 | 871 // construct the button html |
| 872 var $button = $('<div class="button"></div>'); | |
| 873 var $a = $('<a/>'); | |
| 874 var $img = $('<img class="button"/>'); | |
| 875 $buttonsDiv.append($button); | |
| 876 $button.append($a); | |
| 877 $a.append($img); | |
| 878 // add attributes and bindings | |
| 879 $button.attr('title', buttonConfig.tooltip); | |
| 682 | 880 $button.addClass('button-' + buttonName); |
| 665 | 881 // create handler for the buttons |
| 882 $a.bind('click.digilib', (function () { | |
| 883 // we create a new closure to capture the value of action | |
| 884 var action = buttonConfig.onclick; | |
| 885 if ($.isArray(action)) { | |
| 886 // the handler function calls digilib with action and parameters | |
| 887 return function (evt) { | |
| 888 console.debug('click action=', action, ' evt=', evt); | |
| 889 $elem.digilib.apply($elem, action); | |
| 890 return false; | |
| 891 }; | |
| 892 } else { | |
| 893 // the handler function calls digilib with action | |
| 894 return function (evt) { | |
| 895 console.debug('click action=', action, ' evt=', evt); | |
| 896 $elem.digilib(action); | |
| 897 return false; | |
| 898 }; | |
| 899 } | |
| 900 })()); | |
| 901 $img.attr('src', buttonSettings.imagePath + buttonConfig.img); | |
| 690 | 902 } |
| 662 | 903 // make buttons div scroll if too large for window |
| 904 if ($buttonsDiv.height() > $(window).height() - 10) { | |
| 905 $buttonsDiv.css('position', 'absolute'); | |
| 906 } | |
| 697 | 907 // buttons hidden at first |
| 908 $buttonsDiv.hide(); | |
| 909 $elem.append($buttonsDiv); | |
| 682 | 910 if (data.$buttonSets == null) { |
| 697 | 911 // first button set |
| 682 | 912 data.$buttonSets = [$buttonsDiv]; |
| 913 } else { | |
| 690 | 914 $elem.append($buttonsDiv); |
| 682 | 915 data.$buttonSets[buttonSetIdx] = $buttonsDiv; |
| 916 } | |
| 612 | 917 return $buttonsDiv; |
| 610 | 918 }; |
| 615 | 919 |
| 723 | 920 // returns URL for bird's eye view image |
| 921 var getBirdImgUrl = function (data) { | |
| 922 var settings = data.settings; | |
| 923 var birdDivOptions = { | |
| 924 dw : settings.birdDivWidth, | |
| 925 dh : settings.birdDivHeight | |
| 926 }; | |
| 927 var birdSettings = $.extend({}, settings, birdDivOptions); | |
| 928 // use only the relevant parameters | |
| 929 var birdUrl = settings.scalerBaseUrl + '?' + | |
| 930 getParamString(birdSettings, settings.birdDivParams); | |
| 931 return birdUrl; | |
| 932 }; | |
| 933 | |
| 615 | 934 // creates HTML structure for the bird's eye view in elem |
| 638 | 935 var setupBirdDiv = function (data) { |
| 647 | 936 var $elem = data.$elem; |
| 615 | 937 // the bird's eye div |
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938 var $birdDiv = $('<div class="birdview" style="display:none"/>'); |
| 615 | 939 // the detail indicator frame |
| 723 | 940 var $birdZoom = $('<div class="birdZoom" style="display:none; background-color:transparent;"/>'); |
| 615 | 941 // the small image |
| 942 var $birdImg = $('<img class="birdimg"/>'); | |
| 723 | 943 data.$birdDiv = $birdDiv; |
| 944 data.$birdZoom = $birdZoom; | |
| 945 data.$birdImg = $birdImg; | |
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946 $elem.append($birdDiv); |
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947 $birdDiv.append($birdZoom); |
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948 $birdDiv.append($birdImg); |
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949 $birdZoom.css(data.settings.birdIndicatorStyle); |
| 723 | 950 var birdUrl = getBirdImgUrl(data); |
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951 $birdImg.load(birdImgLoadedHandler(data)); |
| 723 | 952 $birdImg.attr('src', birdUrl); |
| 953 }; | |
| 954 | |
| 955 // update bird's eye view | |
| 956 var updateBirdDiv = function (data) { | |
| 957 if (!data.settings.isBirdDivVisible) return; | |
| 958 var $birdImg = data.$birdImg; | |
| 959 var oldsrc = $birdImg.attr('src'); | |
| 960 var newsrc = getBirdImgUrl(data); | |
| 961 if (oldsrc !== newsrc) { | |
| 962 $birdImg.attr('src', newsrc); | |
| 963 // onload handler re-renders | |
| 964 } else { | |
| 965 // re-render | |
| 966 renderBirdArea(data); | |
| 967 } | |
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968 }; |
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969 |
| 625 | 970 // creates HTML structure for the about view in elem |
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971 var setupAboutDiv = function (data) { |
| 647 | 972 var $elem = data.$elem; |
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973 var settings = data.settings; |
| 625 | 974 var $aboutDiv = $('<div class="about" style="display:none"/>'); |
| 616 | 975 var $header = $('<p>Digilib Graphic Viewer</p>'); |
| 976 var $link = $('<a/>'); | |
| 977 var $logo = $('<img class="logo" title="digilib"/>'); | |
| 978 var $content = $('<p/>'); | |
| 979 $elem.append($aboutDiv); | |
| 980 $aboutDiv.append($header); | |
| 981 $aboutDiv.append($link); | |
| 982 $aboutDiv.append($content); | |
| 983 $link.append($logo); | |
| 984 $logo.attr('src', settings.logoUrl); | |
| 635 | 985 $link.attr('href', settings.homeUrl); |
| 616 | 986 $content.text('Version: ' + settings.version); |
| 635 | 987 // click hides |
| 649 | 988 $aboutDiv.bind('click.digilib', function () { |
| 646 | 989 settings.isAboutDivVisible = showDiv(settings.isAboutDivVisible, $aboutDiv, 0); |
| 649 | 990 return false; |
| 710 | 991 }); |
| 635 | 992 data.$aboutDiv = $aboutDiv; |
| 634 | 993 }; |
| 994 | |
| 635 | 995 // shows some window e.g. 'about' (toggle visibility if show is null) |
| 996 var showDiv = function (isVisible, $div, show) { | |
| 645 | 997 if (show == null) { |
| 635 | 998 // toggle visibility |
| 999 isVisible = !isVisible; | |
| 1000 } else { | |
| 1001 // set visibility | |
| 1002 isVisible = show; | |
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1003 } |
| 635 | 1004 if (isVisible) { |
| 1005 $div.fadeIn(); | |
| 1006 } else { | |
| 1007 $div.fadeOut(); | |
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1008 } |
| 635 | 1009 return isVisible; |
| 634 | 1010 }; |
| 616 | 1011 |
| 697 | 1012 // display more (or less) button sets |
| 1013 var showButtons = function (data, more, setIdx, animated) { | |
| 711 | 1014 var atime = animated ? 'fast': 0; |
| 697 | 1015 if (more) { |
| 1016 // add set | |
| 1017 var $otherSets = data.$elem.find('div.buttons:visible'); | |
| 1018 var $set; | |
| 1019 if (data.$buttonSets && data.$buttonSets[setIdx]) { | |
| 1020 // set exists | |
| 1021 $set = data.$buttonSets[setIdx]; | |
| 1022 } else { | |
| 1023 $set = createButtons(data, setIdx); | |
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1024 } |
| 697 | 1025 if ($set == null) return false; |
| 1026 var btnWidth = $set.width(); | |
| 1027 // move remaining sets left and show new set | |
| 711 | 1028 if ($otherSets.length > 0) { |
| 1029 $otherSets.animate({right : '+='+btnWidth+'px'}, atime, | |
| 1030 function () {$set.show();}); | |
| 697 | 1031 } else { |
| 1032 $set.show(); | |
| 711 | 1033 } |
| 697 | 1034 } else { |
| 1035 // remove set | |
| 1036 var $set = data.$buttonSets[setIdx]; | |
| 1037 if ($set == null) return false; | |
| 1038 var btnWidth = $set.width(); | |
| 1039 // hide last set | |
| 1040 $set.hide(); | |
| 1041 // take remaining sets and move right | |
| 1042 var $otherSets = data.$elem.find('div.buttons:visible'); | |
| 711 | 1043 $otherSets.animate({right : '-='+btnWidth+'px'}, atime); |
| 1044 } | |
| 697 | 1045 return true; |
| 1046 }; | |
| 1047 | |
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1048 // create Transform from area and $img |
| 675 | 1049 var getImgTrafo = function ($img, area, rot, hmir, vmir) { |
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1050 var picrect = geom.rectangle($img); |
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1051 var trafo = geom.transform(); |
| 675 | 1052 // move zoom area offset to center |
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1053 trafo.concat(trafo.getTranslation(geom.position(-area.x, -area.y))); |
| 675 | 1054 // scale zoom area size to [1,1] |
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1055 trafo.concat(trafo.getScale(geom.size(1/area.width, 1/area.height))); |
| 675 | 1056 // rotate and mirror (around transformed image center i.e. [0.5,0.5]) |
| 1057 if (rot || hmir || vmir) { | |
| 1058 // move [0.5,0.5] to center | |
| 1059 trafo.concat(trafo.getTranslation(geom.position(-0.5, -0.5))); | |
| 1060 if (hmir) { | |
| 1061 // mirror about center | |
| 1062 trafo.concat(trafo.getMirror('y')); | |
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1063 } |
| 675 | 1064 if (vmir) { |
| 1065 // mirror about center | |
| 1066 trafo.concat(trafo.getMirror('x')); | |
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1067 } |
| 675 | 1068 if (rot) { |
| 1069 // rotate around center | |
| 1070 trafo.concat(trafo.getRotation(parseFloat(rot))); | |
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1071 } |
| 675 | 1072 // move back |
| 1073 trafo.concat(trafo.getTranslation(geom.position(0.5, 0.5))); | |
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1074 } |
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1075 // scale to screen position and size |
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1076 trafo.concat(trafo.getScale(picrect)); |
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1077 trafo.concat(trafo.getTranslation(picrect)); |
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1078 return trafo; |
| 655 | 1079 }; |
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1080 |
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1081 // returns function for load event of scaler img |
| 636 | 1082 var scalerImgLoadedHandler = function (data) { |
| 633 | 1083 return function () { |
| 723 | 1084 var $img = $(this); |
| 627 | 1085 console.debug("img loaded! this=", this, " data=", data); |
| 1086 // create Transform from current area and picsize | |
| 675 | 1087 data.imgTrafo = getImgTrafo($img, data.zoomArea, |
| 1088 data.settings.rot, data.scalerFlags.hmir, data.scalerFlags.vmir); | |
| 686 | 1089 console.debug("imgTrafo=", data.imgTrafo); |
| 715 | 1090 // show image in case it was hidden (for example in zoomDrag) |
| 1091 $img.show(); | |
| 627 | 1092 // display marks |
| 633 | 1093 renderMarks(data); |
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1094 // TODO: digilib.showArrows(); // show arrow overlays for zoom navigation |
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1095 }; |
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1096 }; |
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1097 |
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1098 // returns function for load event of bird's eye view img |
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1099 var birdImgLoadedHandler = function (data) { |
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1100 return function () { |
| 723 | 1101 var $img = $(this); |
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1102 console.debug("birdimg loaded! this=", this, " data=", data); |
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1103 // create Transform from current area and picsize |
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1104 data.birdTrafo = getImgTrafo($img, MAX_ZOOMAREA); |
| 668 | 1105 // display red indicator around zoomarea |
| 723 | 1106 renderBirdArea(data); |
| 1107 // enable click and drag | |
| 1108 birdMoveArea(data); | |
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1109 }; |
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1110 }; |
| 633 | 1111 |
| 1112 // place marks on the image | |
| 1113 var renderMarks = function (data) { | |
| 647 | 1114 var $elem = data.$elem; |
| 643 | 1115 var marks = data.marks; |
| 649 | 1116 // TODO: clear marks first(?) |
| 633 | 1117 for (var i = 0; i < marks.length; i++) { |
| 1118 var mark = marks[i]; | |
| 643 | 1119 if (data.zoomArea.containsPosition(mark)) { |
| 633 | 1120 var mpos = data.imgTrafo.transform(mark); |
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1121 console.debug("renderMarks: mpos=",mpos); |
| 633 | 1122 // create mark |
| 1123 var html = '<div class="mark">'+(i+1)+'</div>'; | |
| 1124 var $mark = $(html); | |
| 1125 $elem.append($mark); | |
| 654 | 1126 $mark.offset({left : mpos.x, top : mpos.y}); |
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1127 } |
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1128 } |
| 633 | 1129 }; |
| 655 | 1130 |
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1131 // show zoom area indicator on bird's eye view |
| 723 | 1132 var renderBirdArea = function (data) { |
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1133 var $birdZoom = data.$birdZoom; |
| 659 | 1134 var zoomArea = data.zoomArea; |
| 723 | 1135 var normalSize = isFullArea(zoomArea); |
| 1136 if (normalSize) { | |
| 1137 $birdZoom.hide(); | |
| 1138 return; | |
| 1139 } else { | |
| 1140 $birdZoom.show(); | |
| 1141 } | |
| 659 | 1142 var indRect = data.birdTrafo.transform(zoomArea); |
|
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1143 var coords = { |
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1144 left : indRect.x-2, // acount for frame width |
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1145 top : indRect.y-2, |
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1146 width : indRect.width, |
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1147 height: indRect.height |
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1148 }; |
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1149 if (data.settings.interactionMode === 'fullscreen') { |
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1150 // no animation for fullscreen |
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1151 $birdZoom.width(coords.width); |
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1152 $birdZoom.height(coords.height); |
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1153 $birdZoom.offset(coords); |
| 723 | 1154 } else { |
| 1155 // nice animation for embedded mode :-) | |
| 1156 $birdZoom.animate(coords, opts); | |
| 1157 } | |
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1158 }; |
| 659 | 1159 |
| 647 | 1160 // zooms by the given factor |
| 643 | 1161 var zoomBy = function(data, factor) { |
| 1162 var area = data.zoomArea; | |
| 1163 var newarea = area.copy(); | |
| 1164 // scale | |
| 1165 newarea.width /= factor; | |
| 1166 newarea.height /= factor; | |
| 1167 // and recenter | |
| 1168 newarea.x -= 0.5 * (newarea.width - area.width); | |
| 1169 newarea.y -= 0.5 * (newarea.height - area.height); | |
| 1170 newarea = MAX_ZOOMAREA.fit(newarea); | |
| 1171 data.zoomArea = newarea; | |
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|
1172 redisplay(data); |
| 643 | 1173 }; |
| 1174 | |
| 647 | 1175 // add a mark where clicked |
| 1176 var setMark = function (data) { | |
| 649 | 1177 var $scaler = data.$scaler; |
| 647 | 1178 // start event capturing |
| 649 | 1179 $scaler.one('click.digilib', function (evt) { |
| 647 | 1180 // event handler adding a new mark |
|
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1181 var mpos = geom.position(evt); |
| 647 | 1182 var pos = data.imgTrafo.invtransform(mpos); |
| 1183 data.marks.push(pos); | |
| 1184 redisplay(data); | |
| 649 | 1185 return false; // do we even get here? |
| 647 | 1186 }); |
| 1187 }; | |
| 668 | 1188 |
| 654 | 1189 var zoomArea = function(data) { |
| 1190 $elem = data.$elem; | |
| 1191 $scaler = data.$scaler; | |
| 1192 var pt1, pt2; | |
| 1193 var $zoomDiv = $('<div class="zoomrect" style="display:none"/>'); | |
| 1194 $elem.append($zoomDiv); | |
| 668 | 1195 $zoomDiv.css(data.settings.zoomrectStyle); |
| 654 | 1196 var picRect = geom.rectangle($scaler); |
| 1197 // FIX ME: is there a way to query the border width from CSS info? | |
| 1198 // rect.x -= 2; // account for overlay borders | |
| 1199 // rect.y -= 2; | |
| 1200 | |
| 1201 var zoomStart = function (evt) { | |
| 1202 pt1 = geom.position(evt); | |
| 1203 // setup and show zoom div | |
| 1204 //moveElement(zoomdiv, Rectangle(pt1.x, pt1.y, 0, 0)); | |
| 1205 $zoomDiv.offset({left : pt1.x, top : pt1.y}); | |
| 668 | 1206 $zoomDiv.width(0).height(0); |
| 654 | 1207 $zoomDiv.show(); |
| 1208 // register events | |
| 1209 $elem.bind("mousemove.digilib", zoomMove); | |
| 1210 $elem.bind("mouseup.digilib", zoomEnd); | |
| 1211 return false; | |
| 1212 }; | |
| 668 | 1213 |
| 654 | 1214 // mouseup handler: end moving |
| 1215 var zoomEnd = function (evt) { | |
| 1216 pt2 = geom.position(evt); | |
| 1217 // assume a click and continue if the area is too small | |
| 1218 var clickRect = geom.rectangle(pt1, pt2); | |
| 710 | 1219 if (clickRect.getArea() <= 5) return false; |
| 654 | 1220 // hide zoom div |
| 1221 $zoomDiv.remove(); | |
| 1222 // unregister events | |
| 1223 $elem.unbind("mousemove.digilib", zoomMove); | |
| 1224 $elem.unbind("mouseup.digilib", zoomEnd); | |
| 1225 // clip and transform | |
| 1226 clickRect.clipTo(picRect); | |
| 1227 var area = data.imgTrafo.invtransform(clickRect); | |
| 1228 data.zoomArea = area; | |
| 1229 // zoomed is always fit | |
| 1230 data.settings.ws = 1; | |
| 1231 redisplay(data); | |
| 1232 return false; | |
| 1233 }; | |
| 668 | 1234 |
| 654 | 1235 // mouse move handler |
| 1236 var zoomMove = function (evt) { | |
| 1237 pt2 = geom.position(evt); | |
| 1238 var rect = geom.rectangle(pt1, pt2); | |
| 1239 rect.clipTo(picRect); | |
| 1240 // update zoom div | |
|
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1241 rect.adjustDiv($zoomDiv); |
| 654 | 1242 return false; |
| 1243 }; | |
| 668 | 1244 |
| 654 | 1245 // bind start zoom handler |
| 1246 $scaler.one('mousedown.digilib', zoomStart); | |
| 1247 }; | |
| 647 | 1248 |
| 723 | 1249 // bird's eye view zoom area click and drag handler |
| 1250 var birdMoveArea = function(data) { | |
|
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1251 var $birdImg = data.$birdImg; |
|
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1252 var $birdZoom = data.$birdZoom; |
|
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1253 var startPos, newRect, birdImgRect, birdZoomRect; |
|
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1254 |
|
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1255 var birdZoomMove = function(evt) { |
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1256 // mousemove handler: drag |
|
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1257 var pos = geom.position(evt); |
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1258 var dx = pos.x - startPos.x; |
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1259 var dy = pos.y - startPos.y; |
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1260 // move birdZoom div, keeping size |
|
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1261 newRect = geom.rectangle( |
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1262 birdZoomRect.x + dx, |
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1263 birdZoomRect.y + dy, |
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1264 birdZoomRect.width, |
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1265 birdZoomRect.height); |
|
678
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1266 // stay within birdimage |
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1267 newRect.stayInside(birdImgRect); |
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1268 $birdZoom.offset({left : newRect.x, top : newRect.y}); |
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1269 // $birdZoom.show(); |
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1270 return false; |
|
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|
1271 }; |
|
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1272 |
|
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1273 var birdZoomEndDrag = function(evt) { |
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1274 // mouseup handler: reload page |
|
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1275 var settings = data.settings; |
| 680 | 1276 $(document).unbind("mousemove.digilib", birdZoomMove); |
| 1277 $(document).unbind("mouseup.digilib", birdZoomEndDrag); | |
| 1278 $birdZoom.unbind("mousemove.digilib", birdZoomMove); | |
| 1279 $birdZoom.unbind("mouseup.digilib", birdZoomEndDrag); | |
|
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1280 if (newRect == null) { // no movement happened |
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1281 startPos = birdZoomRect.getCenter(); |
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1282 birdZoomMove(evt); // set center to click position |
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1283 } |
|
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1284 if (data.zoomArea) { |
| 679 | 1285 // should always be true |
| 1286 var x = cropFloat((newRect.x - birdImgRect.x + 2) / birdImgRect.width); | |
| 1287 var y = cropFloat((newRect.y - birdImgRect.y + 2) / birdImgRect.height); | |
| 1288 data.zoomArea.x = x; | |
| 1289 data.zoomArea.y = y; | |
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1290 } |
|
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1291 settings.ws = 1; // zoomed is always fit |
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1292 redisplay(data); |
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1293 return false; |
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1294 }; |
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1295 |
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1296 var birdZoomStartDrag = function(evt) { |
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1297 // mousedown handler: start dragging bird zoom to a new position |
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1298 startPos = geom.position(evt); |
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1299 birdImgRect = geom.rectangle($birdImg); |
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1300 birdZoomRect = geom.rectangle($birdZoom); |
| 680 | 1301 $(document).bind("mousemove.digilib", birdZoomMove); |
| 1302 $(document).bind("mouseup.digilib", birdZoomEndDrag); | |
| 1303 $birdZoom.bind("mousemove.digilib", birdZoomMove); | |
| 1304 $birdZoom.bind("mouseup.digilib", birdZoomEndDrag); | |
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1305 return false; |
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1306 }; |
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1307 |
| 681 | 1308 $birdImg.bind("mousedown.digilib", birdZoomStartDrag); |
| 1309 $birdZoom.bind("mousedown.digilib", birdZoomStartDrag); | |
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1310 }; |
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1311 |
| 705 | 1312 var setupZoomDrag = function(data) { |
| 1313 // setup handlers for dragging the zoomed image | |
| 1314 var pt1, pt2; | |
| 1315 var dx = 0; | |
| 1316 var dy = 0; | |
| 1317 var $elem = data.$elem; | |
| 1318 var $scaler = data.$scaler; | |
| 1319 var $img = data.$img; | |
| 710 | 1320 |
| 705 | 1321 var dragStart = function (evt) { |
| 1322 // drag the image and load a new detail on mouse up | |
| 1323 // useless if not zoomed | |
| 1324 if (isFullArea(data.zoomArea)) return false; | |
| 1325 pt1 = geom.position(evt); | |
| 1326 $imgRect = geom.rectangle($img); | |
| 715 | 1327 // keep scaler div size while $img is hidden (for embedded mode) |
| 1328 $imgRect.adjustDiv($scaler); | |
| 705 | 1329 // hide the scaler image, show it as background of div instead |
| 715 | 1330 $scaler.css({ |
| 705 | 1331 'background-image' : 'url(' + $img.attr('src') + ')', |
| 1332 'background-repeat' : 'no-repeat', | |
| 706 | 1333 'background-position' : 'top left', |
| 705 | 1334 'cursor' : 'move' |
| 1335 }); | |
| 1336 $img.hide(); | |
| 1337 $(document).bind("mousemove.digilib", dragMove); | |
| 1338 $(document).bind("mouseup.digilib", dragEnd); | |
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1339 return false; |
| 705 | 1340 }; |
| 710 | 1341 |
| 705 | 1342 var dragMove = function (evt) { |
| 715 | 1343 // mousemove handler: drag zoomed image |
| 705 | 1344 var pos = geom.position(evt); |
| 1345 dx = pos.x - pt1.x; | |
| 1346 dy = pos.y - pt1.y; | |
| 1347 // move the background image to the new position | |
| 715 | 1348 $scaler.css({ |
| 705 | 1349 'background-position' : dx + "px " + dy + "px" |
| 1350 }); | |
| 1351 return false; | |
| 1352 }; | |
| 710 | 1353 |
| 705 | 1354 var dragEnd = function (evt) { |
| 715 | 1355 // mouseup handler: reload zoomed image in new position |
| 1356 $scaler.css({ | |
| 705 | 1357 'cursor' : 'default' |
| 1358 }); | |
| 1359 $(document).unbind("mousemove.digilib", dragMove); | |
| 1360 $(document).unbind("mouseup.digilib", dragEnd); | |
| 1361 // calculate relative offset | |
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1362 if (dx === 0 && dy === 0) return false; // no movement |
| 705 | 1363 // reload with scaler image showing the new ausschnitt |
|
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1364 // digilib.moveBy(x, y); |
|
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1365 var pos = geom.position(-dx, -dy); |
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1366 var newPos = data.imgTrafo.invtransform(pos); |
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1367 var newArea = data.zoomArea.setPt1(newPos); |
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1368 data.zoomArea = MAX_ZOOMAREA.fit(newArea); |
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1369 redisplay(data); |
| 705 | 1370 return false; |
| 1371 }; | |
| 1372 | |
| 1373 $scaler.bind("mousedown.digilib", dragStart); | |
| 1374 }; | |
| 1375 | |
| 703 | 1376 // get image quality as a number (0..2) |
| 1377 var getQuality = function (data) { | |
| 1378 var flags = data.scalerFlags; | |
| 1379 var q = flags.q2 || flags.q1 || 'q0'; // assume q0 as default | |
| 1380 return parseInt(q[1], 10); | |
| 706 | 1381 }; |
| 703 | 1382 |
| 1383 // set image quality as a number (0..2) | |
| 1384 var setQuality = function (data, qual) { | |
| 1385 var flags = data.scalerFlags; | |
| 1386 // clear flags | |
| 1387 for (var i = 0; i < 3; ++i) { | |
| 1388 delete flags['q'+i]; | |
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1389 } |
| 703 | 1390 flags['q'+qual] = 'q'+qual; |
| 706 | 1391 }; |
| 710 | 1392 |
| 650 | 1393 // sets a key to a value (relative values with +/- if relative=true) |
| 1394 var setNumValue = function(settings, key, value) { | |
| 716 | 1395 if (value == null) return null; |
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1396 if (isNumber(value)) { |
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1397 settings[key] = value; |
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1398 return value; |
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1399 } |
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1400 var sign = value[0]; |
| 650 | 1401 if (sign === '+' || sign === '-') { |
| 1402 if (settings[key] == null) { | |
|
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1403 // this isn't perfect but still... |
| 650 | 1404 settings[key] = 0; |
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1405 } |
| 650 | 1406 settings[key] = parseFloat(settings[key]) + parseFloat(value); |
| 1407 } else { | |
| 1408 settings[key] = value; | |
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1409 } |
| 650 | 1410 return settings[key]; |
| 1411 }; | |
| 655 | 1412 |
| 1413 // auxiliary function (from old dllib.js) | |
| 659 | 1414 isFullArea = function(area) { |
| 1415 return (area.width === 1.0) && (area.height === 1.0); | |
| 655 | 1416 }; |
| 1417 | |
| 641 | 1418 // auxiliary function (from Douglas Crockford, A.10) |
| 1419 var isNumber = function isNumber(value) { | |
| 710 | 1420 return typeof value === 'number' && isFinite(value); |
| 641 | 1421 }; |
| 655 | 1422 |
| 631 | 1423 // auxiliary function to crop senseless precision |
| 1424 var cropFloat = function (x) { | |
| 637 | 1425 return parseInt(10000 * x, 10) / 10000; |
| 631 | 1426 }; |
| 655 | 1427 |
| 692 | 1428 // fallback for console.log calls |
| 1429 if (customConsole) { | |
| 1430 var logFunction = function(type) { | |
| 1431 return function(){ | |
| 1432 var $debug = $('#debug'); // debug div | |
| 1433 if (!$debug) return; | |
| 1434 var args = Array.prototype.slice.call(arguments); | |
| 1435 var argtext = args.join(' '); | |
| 1436 var $logDiv = $('<div/>'); | |
| 1437 $logDiv.addClass(type); | |
| 1438 $logDiv.text(argtext); | |
| 1439 $debug.append($logDiv); | |
| 1440 }; | |
| 1441 }; | |
| 1442 console.log = logFunction('_log'); | |
| 1443 console.debug = logFunction('_debug'); | |
| 1444 console.error = logFunction('_error'); | |
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1445 } |
| 692 | 1446 |
| 605 | 1447 // hook plugin into jquery |
|
651
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1448 $.fn.digilib = function(action) { |
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1449 if (actions[action]) { |
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1450 // call action on this with the remaining arguments (inserting data as first argument) |
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1451 var $elem = $(this); |
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1452 var data = $elem.data('digilib'); |
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1453 var args = Array.prototype.slice.call(arguments, 1); |
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1454 args.unshift(data); |
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1455 return actions[action].apply(this, args); |
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1456 } else if (typeof(action) === 'object' || !action) { |
| 634 | 1457 // call init on this |
|
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1458 return actions.init.apply(this, arguments); |
| 605 | 1459 } else { |
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more cosmetics: added options to validate with http://www.jslint.com
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1460 $.error('action ' + action + ' does not exist on jQuery.digilib'); |
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c1fa722c570e
more cosmetics: added options to validate with http://www.jslint.com
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changeset
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1461 } |
| 605 | 1462 }; |
| 692 | 1463 |
| 604 | 1464 })(jQuery); |