Mercurial > hg > digilib-old
annotate webapp/src/main/webapp/jquery/jquery.digilib.js @ 989:f4757bf6ab65
new arrows plugin for scroll arrows next to the image.
also new mechanism for specifying insets.
| author | robcast |
|---|---|
| date | Fri, 03 Feb 2012 18:12:47 +0100 |
| parents | f58a6ed1464b |
| children | 2feb71b40e10 |
| 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 **/ |
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23 |
| 767 | 24 /*jslint browser: true, debug: true, forin: true |
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25 */ |
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26 |
| 636 | 27 // fallback for console.log calls |
| 797 | 28 if (typeof console === 'undefined') { |
| 636 | 29 var console = { |
| 692 | 30 log : function(){}, |
| 31 debug : function(){}, | |
| 32 error : function(){} | |
| 33 }; | |
| 779 | 34 var customConsole = false; // set to true if debugging for MS IE |
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35 } |
| 604 | 36 |
| 37 (function($) { | |
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38 |
| 605 | 39 var defaults = { |
| 616 | 40 // version of this script |
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41 'version' : 'jquery.digilib.js 2.1.2b2', |
| 616 | 42 // logo url |
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43 'logoUrl' : 'img/digilib-logo-text1.png', |
| 635 | 44 // homepage url (behind logo) |
| 45 'homeUrl' : 'http://digilib.berlios.de', | |
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46 // base URL to digilib (e.g. 'http://digilib.mpiwg-berlin.mpg.de/digitallibrary') |
| 744 | 47 'digilibBaseUrl' : null, |
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48 // base URL to Scaler servlet (usually digilibBaseUrl+'/servlet/Scaler') |
| 652 | 49 'scalerBaseUrl' : null, |
| 610 | 50 // list of Scaler parameters |
| 627 | 51 'scalerParamNames' : ['fn','pn','dw','dh','ww','wh','wx','wy','ws','mo', |
| 52 'rot','cont','brgt','rgbm','rgba','ddpi','ddpix','ddpiy'], | |
| 53 // Scaler parameter defaults | |
| 643 | 54 'pn' : 1, |
| 627 | 55 'ww' : 1.0, |
| 56 'wh' : 1.0, | |
| 57 'wx' : 0.0, | |
| 58 'wy' : 0.0, | |
| 59 'ws' : 1.0, | |
| 643 | 60 'mo' : '', |
| 61 'rot' : 0, | |
| 62 'cont' : 0, | |
| 63 'brgt' : 0, | |
| 64 'rgbm' : '0/0/0', | |
| 65 'rgba' : '0/0/0', | |
| 66 'ddpi' : null, | |
| 67 'ddpix' : null, | |
| 68 'ddpiy' : null, | |
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69 // list of digilib parameters |
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70 'digilibParamNames' : ['fn','pn','ww','wh','wx','wy','ws','mo','rot','cont','brgt','rgbm','rgba','ddpi','mk','clop'], |
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71 // digilib parameter defaults |
| 643 | 72 'mk' : '', |
| 650 | 73 'clop' : '', |
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74 // list of additional parameters (for page outside of digilib) |
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75 'additionalParamNames' : [], |
| 914 | 76 // list of parameters to suppress when generating page URL |
| 77 'suppressParamNames' : null, | |
| 643 | 78 // mode of operation: |
| 79 // fullscreen = take parameters from page URL, keep state in page URL | |
| 80 // embedded = take parameters from Javascript options, keep state inside object | |
| 610 | 81 'interactionMode' : 'fullscreen', |
| 616 | 82 // is the "about" window shown? |
| 741 | 83 'isAboutDivVisible' : false, |
| 954 | 84 // default size of preview image for drag-scroll (same as Bird's Eye View image) |
| 85 'previewImgWidth' : 200, | |
| 86 'previewImgHeight' : 200, | |
| 87 // maximum width or height of preview background image for drag-scroll | |
| 778 | 88 'maxBgSize' : 10000, |
| 795 | 89 // parameters used by background image |
| 954 | 90 'previewImgParamNames' : ['fn','pn','dw','dh','mo','rot'], |
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91 // reserved space in full page display (default value accounts for body margins) |
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92 'scalerInsets' : { 'x' : 16, 'y': 20 } |
| 610 | 93 }; |
| 655 | 94 |
| 786 | 95 // list of plugins |
| 96 var plugins = {}; | |
| 787 | 97 // object to export functions to plugins |
| 948 | 98 var fn = null; |
| 786 | 99 // affine geometry plugin stub |
| 948 | 100 var geom = null; |
| 944 | 101 // rectangle with maximum zoom area |
| 948 | 102 var FULL_AREA = null; |
| 944 | 103 // limit for float comparison |
| 947 | 104 var EPSILON = 0.0001; |
| 105 // list of buttons | |
| 106 var buttons = {}; | |
| 655 | 107 |
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108 var actions = { |
| 954 | 109 |
| 110 /** init: digilib initialization | |
| 111 * | |
| 112 * @param options | |
| 113 * @returns | |
| 114 */ | |
| 668 | 115 init : function(options) { |
| 786 | 116 // import geometry classes |
| 117 if (plugins.geometry == null) { | |
| 118 $.error("jquery.digilib.geometry plugin not found!"); | |
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119 // last straw: old version |
| 785 | 120 geom = dlGeometry(); |
| 121 } else { | |
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122 // geometry plugin puts classes in the shared fn |
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123 geom = fn.geometry; |
| 785 | 124 } |
| 125 FULL_AREA = geom.rectangle(0, 0, 1, 1); | |
| 788 | 126 |
| 668 | 127 // settings for this digilib instance are merged from defaults and options |
| 128 var settings = $.extend({}, defaults, options); | |
| 129 var isFullscreen = settings.interactionMode === 'fullscreen'; | |
| 130 var queryParams = {}; | |
| 131 if (isFullscreen) { | |
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132 queryParams = parseQueryParams(); |
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133 // filter additional parameters |
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134 for (var p in queryParams) { |
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135 if ($.inArray(p, settings.digilibParamNames) < 0) { |
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136 settings.additionalParamNames.push(p); |
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137 } |
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138 } |
| 668 | 139 } |
| 140 return this.each(function() { | |
| 141 var $elem = $(this); | |
| 142 var data = $elem.data('digilib'); | |
| 688 | 143 var params, elemSettings; |
| 668 | 144 // if the plugin hasn't been initialized yet |
| 145 if (!data) { | |
| 146 // merge query parameters | |
| 147 if (isFullscreen) { | |
| 688 | 148 params = queryParams; |
| 668 | 149 } else { |
| 688 | 150 params = parseImgParams($elem); |
| 785 | 151 if ($.cookie) { |
| 727 | 152 // retrieve params from cookie |
| 153 var ck = "digilib-embed:fn:" + escape(params.fn) + ":pn:" + (params.pn || '1'); | |
| 785 | 154 var cs = $.cookie(ck); |
| 727 | 155 console.debug("get cookie=", ck, " value=", cs); |
| 156 if (cs) { | |
| 157 var cp = parseQueryString(cs); | |
| 728 | 158 // ignore fn and pn from cookie TODO: should we keep pn? |
| 159 delete cp.fn; | |
| 160 delete cp.pn; | |
| 785 | 161 $.extend(params, cp); |
| 727 | 162 } |
| 163 } | |
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164 } |
| 856 | 165 // setup $elem.data, needs "deep copy" because of nesting |
| 849 | 166 elemSettings = $.extend(true, {}, settings, params); |
| 697 | 167 data = { |
| 856 | 168 // let $(this) know about $(this) :-) |
| 668 | 169 $elem : $elem, |
| 856 | 170 // let $elem have its own copy of settings |
| 668 | 171 settings : elemSettings, |
| 856 | 172 // and of the URL query parameters |
| 965 | 173 queryParams : params |
| 668 | 174 }; |
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175 // store in jQuery data element |
| 668 | 176 $elem.data('digilib', data); |
| 949 | 177 } else { |
| 178 // data exists | |
| 179 elemSettings = data.settings; | |
| 668 | 180 } |
| 181 unpackParams(data); | |
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182 // list of current insets (dynamic for buttons etc.) |
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183 data.currentInsets = {'static' : elemSettings.scalerInsets}; |
| 744 | 184 // check if browser knows *background-size |
| 741 | 185 for (var bs in {'':1, '-moz-':1, '-webkit-':1, '-o-':1}) { |
| 186 if ($elem.css(bs+'background-size')) { | |
| 187 data.hasBgSize = true; | |
| 188 data.bgSizeName = bs+'background-size'; | |
| 189 break; | |
| 190 } | |
| 191 } | |
| 944 | 192 data.hasPreviewBg = false; |
| 942 | 193 // check if browser supports AJAX-like URL-replace without reload |
| 194 data.hasAsyncReload = (typeof history.replaceState === 'function'); | |
| 744 | 195 // check digilib base URL |
| 196 if (elemSettings.digilibBaseUrl == null) { | |
| 197 if (isFullscreen) { | |
| 198 // take current host | |
| 199 var url = window.location.toString(); | |
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200 // assume the page lives in [webapp]/jquery/ |
| 915 | 201 var pos = url.indexOf('/jquery/'); |
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202 if (pos > 0) { |
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203 elemSettings.digilibBaseUrl = url.substring(0, pos); |
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204 } |
| 744 | 205 } else { |
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206 // may be we got the scaler URL from the img |
| 744 | 207 var url = elemSettings.scalerBaseUrl; |
| 208 if (url) { | |
| 209 // build it from scaler URL | |
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210 var pos = url.indexOf('/servlet/Scaler'); |
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211 elemSettings.digilibBaseUrl = url.substring(0, pos); |
| 744 | 212 } |
| 213 } | |
| 214 } | |
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215 // check scaler base URL |
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216 if (elemSettings.scalerBaseUrl == null) { |
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217 if (elemSettings.digilibBaseUrl) { |
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218 elemSettings.scalerBaseUrl = elemSettings.digilibBaseUrl + '/servlet/Scaler'; |
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219 } |
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220 } |
| 947 | 221 // set up event handlers |
| 222 $(data).on('update', handleUpdate); // handleUpdate needs to be the first handler for update | |
| 223 $(data).on('changeZoomArea', handleChangeZoomArea); | |
| 786 | 224 // initialise plugins |
| 787 | 225 for (n in plugins) { |
| 226 var p = plugins[n]; | |
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227 if (typeof p.init === 'function') { |
| 946 | 228 // call the plugins init() method |
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229 p.init(data); |
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230 } |
| 786 | 231 } |
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232 // get image info from server if needed |
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233 if (data.scaleMode === 'pixel' || data.scaleMode === 'size') { |
| 797 | 234 loadImageInfo(data); // triggers "imageInfo" on completion |
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235 } |
| 947 | 236 // create HTML structure for scaler |
| 779 | 237 setupScalerDiv(data); |
| 668 | 238 // about window creation - TODO: could be deferred? restrict to only one item? |
| 239 setupAboutDiv(data); | |
| 795 | 240 // send setup event |
| 241 $(data).trigger('setup'); | |
| 668 | 242 }); |
| 243 }, | |
| 244 | |
| 954 | 245 /** destroy: clean up digilib |
| 246 * | |
| 247 * @param data | |
| 248 * @returns | |
| 249 */ | |
| 668 | 250 destroy : function(data) { |
| 251 return this.each(function(){ | |
| 252 var $elem = $(this); | |
| 917 | 253 $(window).off('.digilib'); // unbind all digilibs(?) |
| 668 | 254 data.digilib.remove(); |
| 255 $elem.removeData('digilib'); | |
| 256 }); | |
| 257 }, | |
| 258 | |
| 954 | 259 /** show or hide the 'about' window |
| 260 * | |
| 261 * @param data | |
| 262 * @param show | |
| 263 */ | |
| 668 | 264 showAboutDiv : function(data, show) { |
| 765 | 265 var on = showDiv(data.settings.isAboutDivVisible, data.$aboutDiv, show); |
| 266 data.settings.isAboutDivVisible = on; | |
| 946 | 267 //FIXME: highlightButtons(data, 'help', on); |
| 668 | 268 }, |
| 655 | 269 |
| 954 | 270 /** goto given page nr (+/-: relative) |
| 271 * | |
| 272 * @param data | |
| 273 * @param pageNr | |
| 274 * @returns {Boolean} | |
| 275 */ | |
| 668 | 276 gotoPage : function (data, pageNr) { |
| 277 var settings = data.settings; | |
| 278 var oldpn = settings.pn; | |
| 716 | 279 if (pageNr == null) { |
| 280 pageNr = window.prompt("Goto page number", oldpn); | |
| 281 } | |
| 668 | 282 var pn = setNumValue(settings, "pn", pageNr); |
| 283 if (pn == null) return false; // nothing happened | |
| 284 if (pn < 1) { | |
| 285 alert("no such page (page number too low)"); | |
| 286 settings.pn = oldpn; | |
| 287 return false; | |
| 288 } | |
| 767 | 289 // TODO: how do we get pt? |
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290 if (settings.pt != null) { |
| 668 | 291 if (pn > settings.pt) { |
| 292 alert("no such page (page number too high)"); | |
| 623 | 293 settings.pn = oldpn; |
| 294 return false; | |
| 634 | 295 } |
| 668 | 296 } |
| 297 // reset mk and others(?) | |
| 298 data.marks = []; | |
| 927 | 299 data.zoomArea = FULL_AREA.copy(); |
| 668 | 300 // then reload |
| 301 redisplay(data); | |
| 302 }, | |
| 654 | 303 |
| 954 | 304 /** zoom by a given factor |
| 305 * | |
| 306 * @param data | |
| 307 * @param factor | |
| 308 */ | |
| 668 | 309 zoomBy : function (data, factor) { |
| 310 zoomBy(data, factor); | |
| 311 }, | |
| 647 | 312 |
| 954 | 313 /** zoom to area (or interactive) |
| 314 * | |
| 315 * @param data | |
| 316 * @param area | |
| 317 */ | |
| 767 | 318 zoomArea : function (data, area) { |
| 319 if (area == null) { | |
| 320 // interactively | |
| 321 zoomArea(data); | |
| 322 } else { | |
| 323 data.zoomArea = geom.rectangle(area); | |
| 324 redisplay(data); | |
| 325 } | |
| 668 | 326 }, |
| 650 | 327 |
| 954 | 328 /** zoom out to full page |
| 329 * | |
| 330 * @param data | |
| 331 * @param mode | |
| 332 */ | |
| 668 | 333 zoomFull : function (data, mode) { |
| 917 | 334 data.zoomArea = FULL_AREA.copy(); |
| 972 | 335 setFitMode(data, mode); |
| 336 // zoom full only works in screen mode | |
| 337 setScaleMode(data, 'screen'); | |
| 668 | 338 redisplay(data); |
| 339 }, | |
| 340 | |
| 954 | 341 /** set a mark by clicking (or giving a position) |
| 342 * | |
| 343 * @param data | |
| 344 * @param mpos | |
| 345 */ | |
| 668 | 346 setMark : function (data, mpos) { |
| 347 if (mpos == null) { | |
| 348 // interactive | |
| 349 setMark(data); | |
| 350 } else { | |
| 351 // use position | |
| 352 data.marks.push(pos); | |
| 663 | 353 redisplay(data); |
| 604 | 354 } |
| 668 | 355 }, |
| 356 | |
| 954 | 357 /** remove the last mark |
| 358 * | |
| 359 * @param data | |
| 360 */ | |
| 668 | 361 removeMark : function (data) { |
| 362 data.marks.pop(); | |
| 363 redisplay(data); | |
| 364 }, | |
| 365 | |
| 954 | 366 /** mirror the image |
| 367 * | |
| 368 * @param data | |
| 369 * @param mode | |
| 370 */ | |
| 668 | 371 mirror : function (data, mode) { |
| 372 var flags = data.scalerFlags; | |
| 373 if (mode === 'h') { | |
| 374 if (flags.hmir) { | |
| 375 delete flags.hmir; | |
| 376 } else { | |
| 377 flags.hmir = 1; | |
| 378 } | |
| 379 } else { | |
| 380 if (flags.vmir) { | |
| 381 delete flags.vmir; | |
| 382 } else { | |
| 383 flags.vmir = 1; | |
| 384 } | |
| 385 } | |
| 386 redisplay(data); | |
| 387 }, | |
| 650 | 388 |
| 954 | 389 /** rotate the image |
| 390 * | |
| 391 * @param data | |
| 392 * @param angle | |
| 393 */ | |
| 668 | 394 rotate : function (data, angle) { |
| 395 var rot = data.settings.rot; | |
| 396 if (angle == null) { | |
| 397 angle = window.prompt("Rotation angle:", rot); | |
| 398 } | |
| 399 data.settings.rot = angle; | |
| 400 redisplay(data); | |
| 401 }, | |
| 402 | |
| 954 | 403 /** change brightness |
| 404 * | |
| 405 * @param data | |
| 406 * @param factor | |
| 407 */ | |
| 668 | 408 brightness : function (data, factor) { |
| 409 var brgt = data.settings.brgt; | |
| 410 if (factor == null) { | |
| 411 factor = window.prompt("Brightness (-255..255)", brgt); | |
| 412 } | |
| 413 data.settings.brgt = factor; | |
| 414 redisplay(data); | |
| 415 }, | |
| 416 | |
| 954 | 417 /** change contrast |
| 418 * | |
| 419 * @param data | |
| 420 * @param factor | |
| 421 */ | |
| 668 | 422 contrast : function (data, factor) { |
| 423 var cont = data.settings.cont; | |
| 424 if (factor == null) { | |
| 425 factor = window.prompt("Contrast (-8, 8)", cont); | |
| 426 } | |
| 427 data.settings.cont = factor; | |
| 428 redisplay(data); | |
| 688 | 429 }, |
| 710 | 430 |
| 954 | 431 /** reset image parameters to defaults |
| 432 * TODO: improve this! | |
| 433 * | |
| 434 * @param data | |
| 435 */ | |
| 688 | 436 reset : function (data) { |
| 437 var settings = data.settings; | |
| 438 var paramNames = settings.digilibParamNames; | |
| 439 var params = data.queryParams; | |
| 440 // delete all digilib parameters | |
| 441 for (var i = 0; i < paramNames.length; i++) { | |
| 442 var paramName = paramNames[i]; | |
| 443 delete settings[paramName]; | |
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444 } |
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445 settings.fn = params.fn || ''; // no default defined |
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446 settings.pn = params.pn || defaults.pn; |
| 986 | 447 var size = getFullscreenImgSize(data); |
| 448 settings.dw = params.dw || size.width; | |
| 449 settings.dh = params.dh || size.height; | |
| 709 | 450 settings.isBirdDivVisible = false; |
| 946 | 451 settings.visibleButtonSets = 1; // FIXME |
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452 // resets zoomArea, marks, scalerflags |
| 917 | 453 data.zoomArea = FULL_AREA.copy(); |
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454 data.marks = []; |
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455 data.scalerFlags = {}; |
| 712 | 456 delete data.dlOpts.fitwidth; |
| 457 delete data.dlOpts.fitheight; | |
| 986 | 458 data.scaleMode = 'screen'; |
| 688 | 459 redisplay(data); |
| 689 | 460 }, |
| 461 | |
| 954 | 462 /** presents a reference url (returns value if noprompt) |
| 463 * | |
| 464 * @param data | |
| 465 * @param noprompt | |
| 466 * @returns | |
| 467 */ | |
| 703 | 468 reference : function (data, noprompt) { |
| 744 | 469 var url = getDigilibUrl(data); |
| 703 | 470 if (noprompt == null) { |
| 471 window.prompt("URL reference to the current view", url); | |
| 472 } | |
| 473 return url; | |
| 474 }, | |
| 710 | 475 |
| 954 | 476 /** set image quality |
| 477 * | |
| 478 * @param data | |
| 479 * @param qual | |
| 480 */ | |
| 748 | 481 setQuality : function (data, qual) { |
| 703 | 482 var oldq = getQuality(data); |
| 483 if (qual == null) { | |
| 484 qual = window.prompt("Image quality (0..2)", oldq); | |
| 485 } | |
| 486 qual = parseInt(qual, 10); | |
| 487 if (qual >= 0 && qual <= 2) { | |
| 488 setQuality(data, qual); | |
| 489 redisplay(data); | |
| 490 } | |
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491 }, |
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492 |
| 954 | 493 /** calibrate (only faking) |
| 494 * | |
| 495 * @param data | |
| 496 * @param res | |
| 497 */ | |
|
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498 calibrate : function (data, res) { |
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499 var oldRes = data.settings.ddpi; |
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500 if (res == null) { |
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501 res = window.prompt("Display resolution (dpi)", oldRes); |
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502 } |
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503 if (res != null) { |
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504 data.settings.ddpi = res; |
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505 redisplay(data); |
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506 } |
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507 }, |
| 775 | 508 |
| 954 | 509 /** set image scale mode |
| 510 * | |
| 511 * @param data | |
| 512 * @param mode | |
| 513 */ | |
|
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514 setScaleMode : function (data, mode) { |
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515 var oldM = getScaleMode(data); |
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516 if (mode == null) { |
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517 mode = window.prompt("Image scale mode (screen, pixel, size)", oldM); |
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518 } |
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519 if (mode != null) { |
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520 setScaleMode(data, mode); |
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521 redisplay(data); |
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522 } |
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523 } |
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524 // end of actions |
| 605 | 525 }; |
| 604 | 526 |
| 954 | 527 /** return parameters from page url |
| 528 * | |
| 529 */ | |
| 607 | 530 var parseQueryParams = function() { |
| 636 | 531 return parseQueryString(window.location.search.slice(1)); |
| 532 }; | |
| 655 | 533 |
| 984 | 534 /** |
| 535 * returns parameters from embedded img-element | |
| 954 | 536 * |
| 537 */ | |
| 607 | 538 var parseImgParams = function($elem) { |
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539 var src = $elem.find('img').first().attr('src'); |
| 710 | 540 if (!src) return null; |
| 607 | 541 var pos = src.indexOf('?'); |
| 542 var query = (pos < 0) ? '' : src.substring(pos + 1); | |
| 543 var scalerUrl = src.substring(0, pos); | |
| 627 | 544 var params = parseQueryString(query); |
| 545 params.scalerBaseUrl = scalerUrl; | |
| 546 return params; | |
| 636 | 547 }; |
| 607 | 548 |
| 984 | 549 /** |
| 550 * parses query parameter string into parameter object | |
| 954 | 551 * |
| 552 */ | |
| 607 | 553 var parseQueryString = function(query) { |
| 701 | 554 var params = {}; |
| 555 if (query == null) return params; | |
| 607 | 556 var pairs = query.split("&"); |
| 636 | 557 //var keys = []; |
| 607 | 558 for (var i = 0; i < pairs.length; i++) { |
| 559 var pair = pairs[i].split("="); | |
| 560 if (pair.length === 2) { | |
| 627 | 561 params[pair[0]] = pair[1]; |
| 636 | 562 //keys.push(pair[0]); |
| 634 | 563 } |
| 636 | 564 } |
| 627 | 565 return params; |
| 636 | 566 }; |
| 668 | 567 |
| 984 | 568 /** |
| 569 * return a query string from key names from a parameter hash | |
| 954 | 570 * (ignores keys if the same value is in defaults) |
| 571 * | |
| 572 */ | |
| 643 | 573 var getParamString = function (settings, keys, defaults) { |
| 615 | 574 var paramString = ''; |
| 650 | 575 var nx = false; |
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576 for (var i = 0; i < keys.length; ++i) { |
| 615 | 577 var key = keys[i]; |
| 663 | 578 if ((settings[key] != null) && ((defaults == null) || (settings[key] != defaults[key]))) { |
| 615 | 579 // first param gets no '&' |
| 650 | 580 if (nx) { |
| 581 paramString += '&'; | |
| 582 } else { | |
| 583 nx = true; | |
| 584 } | |
| 615 | 585 // add parm=val |
| 586 paramString += key + '=' + settings[key]; | |
| 643 | 587 } |
| 615 | 588 } |
| 589 return paramString; | |
| 631 | 590 }; |
| 591 | |
| 984 | 592 /** |
| 593 * returns URL and query string for Scaler | |
| 954 | 594 */ |
| 636 | 595 var getScalerUrl = function (data) { |
| 741 | 596 packParams(data); |
| 653 | 597 var settings = data.settings; |
| 652 | 598 if (settings.scalerBaseUrl == null) { |
| 599 alert("ERROR: URL of digilib Scaler servlet missing!"); | |
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600 } |
| 636 | 601 var keys = settings.scalerParamNames; |
| 643 | 602 var queryString = getParamString(settings, keys, defaults); |
| 636 | 603 var url = settings.scalerBaseUrl + '?' + queryString; |
| 604 return url; | |
| 605 }; | |
| 606 | |
| 954 | 607 /** returns URL for preview background image |
| 608 * | |
| 609 */ | |
| 610 var getPreviewImgUrl = function (data, moreParams) { | |
| 741 | 611 var settings = data.settings; |
| 795 | 612 var bgOptions = { |
| 954 | 613 dw : settings.previewImgWidth, |
| 614 dh : settings.previewImgHeight | |
| 741 | 615 }; |
| 795 | 616 var bgSettings = $.extend({}, settings, bgOptions); |
| 931 | 617 // filter scaler flags (use only hmir and vmir) |
| 795 | 618 if (bgSettings.mo != null) { |
| 619 var mo = ''; | |
| 620 if (data.scalerFlags.hmir != null) { | |
| 621 mo += 'hmir,'; | |
| 767 | 622 } |
| 795 | 623 if (data.scalerFlags.vmir != null) { |
| 624 mo += 'vmir'; | |
| 625 } | |
| 626 bgSettings.mo = mo; | |
| 743 | 627 } |
| 954 | 628 var params = getParamString(bgSettings, settings.previewImgParamNames, defaults); |
| 743 | 629 var url = settings.scalerBaseUrl + '?' + params; |
| 741 | 630 return url; |
| 631 }; | |
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632 |
| 954 | 633 /** returns URL and query string for current digilib |
| 634 * | |
| 635 */ | |
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636 var getDigilibUrl = function (data) { |
| 643 | 637 packParams(data); |
| 636 | 638 var settings = data.settings; |
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639 var paramList = settings.additionalParamNames.concat(settings.digilibParamNames); |
| 914 | 640 if (settings.suppressParamNames != null) { |
| 641 // eliminate suppressed parameters from list | |
| 642 paramList = $.map(paramList, function(e, idx) { | |
| 643 if ($.inArray(e, settings.suppressParamNames) >= 0) { | |
| 644 return null; | |
| 645 } else { | |
| 646 return e; | |
| 647 } | |
| 648 }); | |
| 649 } | |
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650 var queryString = getParamString(settings, paramList, defaults); |
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651 // take url from current location |
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652 var url = window.location.href; |
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653 var pos = url.indexOf('?'); |
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654 if (pos > -1) { |
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655 url = url.substring(0, pos); |
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656 } |
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657 return url + '?' + queryString; |
| 636 | 658 }; |
| 659 | |
| 954 | 660 /** loads image information from digilib server via HTTP |
| 661 * | |
| 662 */ | |
| 797 | 663 var loadImageInfo = function (data) { |
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664 var settings = data.settings; |
| 917 | 665 // bind default function (only once) |
| 666 $(data).off('imageInfo', handleImageInfo); | |
| 667 $(data).on('imageInfo', handleImageInfo); | |
| 668 var url = settings.digilibBaseUrl + '/ImgInfo-json.jsp'; | |
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669 url += '?' + getParamString(settings, ['fn', 'pn'], defaults); |
| 767 | 670 // TODO: better error handling |
| 785 | 671 $.getJSON(url, function (json) { |
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672 console.debug("got json data=", json); |
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673 data.imgInfo = json; |
| 797 | 674 // send event |
| 675 $(data).trigger('imageInfo', [json]); | |
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676 }); |
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677 }; |
| 775 | 678 |
| 954 | 679 /** processes some parameters into objects and stuff |
| 680 * | |
| 681 */ | |
| 631 | 682 var unpackParams = function (data) { |
| 683 var settings = data.settings; | |
| 636 | 684 // zoom area |
| 631 | 685 var zoomArea = geom.rectangle(settings.wx, settings.wy, settings.ww, settings.wh); |
| 643 | 686 data.zoomArea = zoomArea; |
| 636 | 687 // marks |
| 631 | 688 var marks = []; |
| 949 | 689 var pa; |
| 650 | 690 if (settings.mk) { |
| 691 var mk = settings.mk; | |
| 692 if (mk.indexOf(";") >= 0) { | |
| 949 | 693 pa = mk.split(";"); // old format with ";" |
| 650 | 694 } else { |
| 949 | 695 pa = mk.split(","); // new format |
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696 } |
| 650 | 697 for (var i = 0; i < pa.length ; i++) { |
| 698 var pos = pa[i].split("/"); | |
| 699 if (pos.length > 1) { | |
| 700 marks.push(geom.position(pos[0], pos[1])); | |
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701 } |
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702 } |
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703 } |
| 643 | 704 data.marks = marks; |
| 650 | 705 // mo (Scaler flags) |
| 706 var flags = {}; | |
| 707 if (settings.mo) { | |
| 708 var pa = settings.mo.split(","); | |
| 709 for (var i = 0; i < pa.length ; i++) { | |
| 710 flags[pa[i]] = pa[i]; | |
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711 } |
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712 } |
| 650 | 713 data.scalerFlags = flags; |
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714 data.scaleMode = getScaleMode(data); |
| 723 | 715 retrieveOptions(data); |
| 655 | 716 }; |
| 717 | |
| 954 | 718 /** put area into parameters |
| 719 * | |
| 720 */ | |
| 822 | 721 var packArea = function (settings, area) { |
| 722 if (!area) return; | |
| 723 // zoom area | |
| 724 settings.wx = cropFloat(area.x); | |
| 725 settings.wy = cropFloat(area.y); | |
| 726 settings.ww = cropFloat(area.width); | |
| 727 settings.wh = cropFloat(area.height); | |
| 728 }; | |
| 729 | |
| 954 | 730 /** put marks into parameters |
| 731 * | |
| 732 */ | |
| 822 | 733 var packMarks = function (settings, marks) { |
| 734 if (!marks) return; | |
| 735 settings.mk = ''; | |
| 736 for (var i = 0; i < marks.length; i++) { | |
| 737 if (i) { | |
| 738 settings.mk += ','; | |
| 739 } | |
| 740 settings.mk += | |
| 741 cropFloatStr(marks[i].x) + '/' + | |
| 742 cropFloatStr(marks[i].y); | |
| 743 } | |
| 744 }; | |
| 745 | |
| 954 | 746 /** pack scaler flags into parameters |
| 747 * | |
| 748 */ | |
| 822 | 749 var packScalerFlags = function (settings, flags) { |
| 750 if (!flags) return; | |
| 751 var mo = ''; | |
| 752 for (var f in flags) { | |
| 753 if (mo) { | |
| 754 mo += ','; | |
| 755 } | |
| 756 mo += f; | |
| 757 } | |
| 758 settings.mo = mo; | |
| 759 }; | |
| 760 | |
| 954 | 761 /** put objects back into parameters |
| 762 * | |
| 763 */ | |
| 631 | 764 var packParams = function (data) { |
| 765 var settings = data.settings; | |
| 822 | 766 packArea(settings, data.zoomArea); |
| 767 packMarks(settings, data.marks); | |
| 768 packScalerFlags(settings, data.scalerFlags); | |
| 769 // store user interface options in cookie | |
| 723 | 770 storeOptions(data); |
| 709 | 771 }; |
| 688 | 772 |
| 954 | 773 /** store digilib options in a cookie |
| 774 * | |
| 775 */ | |
| 723 | 776 var storeOptions = function (data) { |
| 709 | 777 var settings = data.settings; |
| 778 if (data.dlOpts) { | |
| 779 // save digilib settings in options | |
| 780 data.dlOpts.birdview = settings.isBirdDivVisible ? 1 : 0; | |
| 781 data.dlOpts.buttons = settings.visibleButtonSets; | |
| 782 var clop = ''; | |
| 783 for (var o in data.dlOpts) { | |
| 784 if (clop) { | |
| 785 clop += '&'; | |
|
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786 } |
| 709 | 787 clop += o + '=' + data.dlOpts[o]; |
|
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|
788 } |
| 785 | 789 if ($.cookie) { |
| 709 | 790 var ck = "digilib:fn:" + escape(settings.fn) + ":pn:" + settings.pn; |
| 791 console.debug("set cookie=", ck, " value=", clop); | |
| 785 | 792 $.cookie(ck, clop); |
|
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793 } |
|
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794 } |
| 785 | 795 if (settings.interactionMode !== 'fullscreen' && $.cookie) { |
| 727 | 796 // store normal parameters in cookie for embedded mode |
| 797 var qs = getParamString(settings, settings.digilibParamNames, defaults); | |
| 798 var ck = "digilib-embed:fn:" + escape(settings.fn) + ":pn:" + settings.pn; | |
| 799 console.debug("set cookie=", ck, " value=", qs); | |
| 785 | 800 $.cookie(ck, qs); |
| 727 | 801 } |
| 631 | 802 }; |
| 655 | 803 |
| 983 | 804 /** retrieve digilib options from a cookie |
| 954 | 805 * |
| 806 */ | |
| 723 | 807 var retrieveOptions = function (data) { |
| 709 | 808 // clop (digilib options) |
| 809 var opts = {}; | |
| 810 var settings = data.settings; | |
| 785 | 811 if ($.cookie) { |
| 709 | 812 // read from cookie |
| 813 var ck = "digilib:fn:" + escape(settings.fn) + ":pn:" + settings.pn; | |
| 785 | 814 var cp = $.cookie(ck); |
| 709 | 815 console.debug("get cookie=", ck, " value=", cp); |
| 816 // in query string format | |
| 817 opts = parseQueryString(cp); | |
|
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|
818 } |
| 709 | 819 data.dlOpts = opts; |
| 820 // birdview option | |
| 821 if (opts.birdview != null) { | |
| 822 settings.isBirdDivVisible = opts.birdview === '1'; | |
|
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823 } |
| 709 | 824 // visible button sets |
| 825 if (opts.buttons != null) { | |
| 826 settings.visibleButtonSets = opts.buttons; | |
|
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827 } |
| 711 | 828 }; |
| 709 | 829 |
| 949 | 830 /** (re)load the image with the current settings. |
| 831 * | |
| 832 */ | |
|
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|
833 var redisplay = function (data) { |
| 636 | 834 var settings = data.settings; |
| 835 if (settings.interactionMode === 'fullscreen') { | |
| 836 // update location.href (browser URL) in fullscreen mode | |
|
644
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|
837 var url = getDigilibUrl(data); |
| 636 | 838 var history = window.history; |
| 942 | 839 if (data.hasAsyncReload) { |
|
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840 console.debug("faking reload to "+url); |
|
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841 // change url without reloading (stateObj, title, url) |
|
890
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|
842 // TODO: we really need to push the state in stateObj and listen to pop-events |
|
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843 try { |
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|
844 history.replaceState({}, '', url); |
| 931 | 845 // show busy cursor |
| 846 $('body').css('cursor', 'progress'); | |
| 934 | 847 data.$scaler.css('cursor', 'progress'); |
|
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848 // change img src |
| 949 | 849 var $img = data.$img; |
|
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850 var imgurl = getScalerUrl(data); |
| 949 | 851 $img.attr('src', imgurl); |
|
952
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852 // trigger load event if image is cached. Doesn't work with Firefox!! |
|
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853 //if ($img.prop('complete')) $img.trigger('load'); |
| 917 | 854 if (data.scalerFlags.clip != null || data.scalerFlags.osize != null) { |
| 855 // we need image info, do we have it? | |
| 856 if (data.imgInfo == null) { | |
| 857 loadImageInfo(data); | |
| 858 } | |
| 859 } | |
|
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860 // update if we have a preview |
|
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861 if (data.hasPreviewBg) { |
|
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|
862 $(data).trigger('update'); |
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|
863 } |
| 946 | 864 //FIXME: highlightButtons(data); |
|
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865 // send event |
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866 $(data).trigger('redisplay'); |
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|
867 } catch (e) { |
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868 console.error("replaceState("+url+") didn't work: "+e); |
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869 // reload window |
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870 window.location = url; |
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|
871 } |
|
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872 } else { |
|
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|
873 // reload window |
|
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874 window.location = url; |
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|
875 } |
| 636 | 876 } else { |
| 877 // embedded mode -- just change img src | |
| 931 | 878 // show busy cursor |
| 879 $('body').css('cursor', 'progress'); | |
| 934 | 880 data.$scaler.css('cursor', 'progress'); |
| 949 | 881 var $img = data.$img; |
| 636 | 882 var url = getScalerUrl(data); |
| 949 | 883 $img.attr('src', url); |
| 884 // trigger load event if image is cached | |
| 885 if ($img.prop('complete')) $img.trigger('load'); | |
| 917 | 886 if (data.scalerFlags.clip != null || data.scalerFlags.osize != null) { |
| 887 // we need image info, do we have it? | |
| 888 if (data.imgInfo == null) { | |
| 889 loadImageInfo(data); | |
| 890 } | |
| 891 } | |
| 949 | 892 //FIXME: highlightButtons(data); |
| 795 | 893 // send event |
| 894 $(data).trigger('redisplay'); | |
|
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895 } |
| 622 | 896 }; |
| 897 | |
| 949 | 898 /** update display (overlays etc.) |
| 899 * (just triggers "update" event) | |
| 900 */ | |
| 767 | 901 var updateDisplay = function (data) { |
| 947 | 902 // send event |
| 903 $(data).trigger('update'); | |
| 904 }; | |
| 905 | |
| 949 | 906 /** handle "update" display event. |
| 954 | 907 * updates image transform, redraws marks etc. |
| 949 | 908 */ |
| 947 | 909 var handleUpdate = function (evt) { |
| 910 var data = this; | |
| 767 | 911 updateImgTrafo(data); |
| 912 renderMarks(data); | |
| 913 setupZoomDrag(data); | |
| 914 }; | |
| 974 | 915 |
| 984 | 916 /** |
| 917 * returns maximum size for scaler img in fullscreen mode. | |
| 949 | 918 */ |
| 778 | 919 var getFullscreenImgSize = function (data) { |
|
989
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|
920 //var mode = data.settings.interactionMode; |
| 662 | 921 var $win = $(window); |
| 922 var winH = $win.height(); | |
| 779 | 923 var winW = $win.width(); |
|
989
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|
924 // add all current insets |
|
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|
925 var insets = { 'x' : 0, 'y' : 0}; |
|
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|
926 for (var n in data.currentInsets) { |
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|
927 insets.x += data.currentInsets[n].x; |
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|
928 insets.y += data.currentInsets[n].y; |
|
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|
929 }; |
|
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|
930 // accounting for left/right border, body margins and additional requirements |
|
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|
931 var imgW = winW - insets.x; |
|
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|
932 var imgH = winH - insets.y; |
|
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|
933 console.debug('screen w/h:', winW, winH, 'window.width', $win.width(), 'img w/h:', imgW, imgH); |
|
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|
934 return geom.size(imgW, imgH); |
| 662 | 935 }; |
| 936 | |
| 984 | 937 /** |
| 938 * returns a rectangle.with the fullscreen dimensions | |
| 974 | 939 */ |
| 940 var getFullscreenRect = function (data) { | |
| 941 return geom.rectangle(getFullscreenImgSize(data)); | |
| 942 }; | |
| 943 | |
| 984 | 944 /** |
| 945 * creates HTML structure for digilib in elem | |
| 949 | 946 */ |
| 627 | 947 var setupScalerDiv = function (data) { |
| 948 var settings = data.settings; | |
| 647 | 949 var $elem = data.$elem; |
| 725 | 950 $elem.addClass('digilib'); |
| 728 | 951 var $img; |
| 952 var scalerUrl; | |
| 608 | 953 if (settings.interactionMode === 'fullscreen') { |
| 728 | 954 // fullscreen |
| 725 | 955 $elem.addClass('dl_fullscreen'); |
| 778 | 956 var imgSize = getFullscreenImgSize(data); |
| 984 | 957 data.fullscreenImgSize = imgSize; |
| 650 | 958 // fitwidth/height omits destination height/width |
| 728 | 959 if (data.dlOpts.fitheight == null) { |
| 650 | 960 settings.dw = imgSize.width; |
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961 } |
| 728 | 962 if (data.dlOpts.fitwidth == null) { |
| 650 | 963 settings.dh = imgSize.height; |
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|
964 } |
| 686 | 965 scalerUrl = getScalerUrl(data); |
| 728 | 966 $img = $('<img/>'); |
| 609 | 967 } else { |
| 728 | 968 // embedded mode -- try to keep img tag |
| 725 | 969 $elem.addClass('dl_embedded'); |
| 728 | 970 scalerUrl = getScalerUrl(data); |
| 623 | 971 $img = $elem.find('img'); |
|
613
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|
972 if ($img.length > 0) { |
|
870
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|
973 var oldUrl = $img.attr('src'); |
|
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|
974 // keep img attributes from html |
|
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|
975 var title = $img.attr('title'); |
|
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|
976 var alt = $img.attr('alt'); |
|
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|
977 if (oldUrl === scalerUrl) { |
|
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|
978 console.debug("img detach:", $img); |
|
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|
979 $img.detach(); |
|
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|
980 } else { |
|
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|
981 $img = $('<img/>'); |
|
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|
982 $img.attr("title", title); |
|
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|
983 $img.attr("alt", alt); |
| 728 | 984 } |
|
613
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|
985 } else { |
|
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|
986 $img = $('<img/>'); |
|
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987 } |
| 608 | 988 } |
| 822 | 989 // create new inner html, keeping buttons and content marked with "keep" class |
| 990 $elem.contents(":not(.keep)").remove(); | |
|
613
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|
991 var $scaler = $('<div class="scaler"/>'); |
| 779 | 992 // scaler should be the first child element? |
| 993 $elem.prepend($scaler); | |
|
613
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|
994 $scaler.append($img); |
| 622 | 995 $img.addClass('pic'); |
| 649 | 996 data.$scaler = $scaler; |
| 636 | 997 data.$img = $img; |
| 947 | 998 // set busy cursor |
| 999 $('body').css('cursor','progress'); | |
| 1000 data.$scaler.css('cursor', 'progress'); | |
| 942 | 1001 // set up image load handler before setting the src attribute (IE bug) |
| 687 | 1002 $img.load(scalerImgLoadedHandler(data)); |
| 767 | 1003 $img.error(function () {console.error("error loading scaler image");}); |
| 687 | 1004 $img.attr('src', scalerUrl); |
| 608 | 1005 }; |
| 615 | 1006 |
| 949 | 1007 /** creates HTML structure for the about view in elem |
| 1008 * | |
| 1009 */ | |
|
628
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|
1010 var setupAboutDiv = function (data) { |
| 647 | 1011 var $elem = data.$elem; |
|
628
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|
1012 var settings = data.settings; |
| 625 | 1013 var $aboutDiv = $('<div class="about" style="display:none"/>'); |
|
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1014 var $header = $('<p>Digilib Image Viewer</p>'); |
| 616 | 1015 var $link = $('<a/>'); |
| 1016 var $logo = $('<img class="logo" title="digilib"/>'); | |
| 1017 var $content = $('<p/>'); | |
| 1018 $elem.append($aboutDiv); | |
| 1019 $aboutDiv.append($header); | |
| 1020 $aboutDiv.append($link); | |
| 1021 $aboutDiv.append($content); | |
| 1022 $link.append($logo); | |
|
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|
1023 logoUrl = settings.logoUrl; |
|
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|
1024 // make relative logoUrl absolute |
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1025 if (logoUrl.charAt(0) !== '/' && logoUrl.substring(0,3) !== 'http') { |
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|
1026 logoUrl = settings.digilibBaseUrl + '/' + logoUrl; |
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1027 } |
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|
1028 $logo.attr('src', logoUrl); |
| 635 | 1029 $link.attr('href', settings.homeUrl); |
| 616 | 1030 $content.text('Version: ' + settings.version); |
| 775 | 1031 data.$aboutDiv = $aboutDiv; |
| 635 | 1032 // click hides |
| 917 | 1033 $aboutDiv.on('click.digilib', function () { |
| 775 | 1034 actions['showAboutDiv'](data, false); |
| 710 | 1035 }); |
| 634 | 1036 }; |
| 1037 | |
| 949 | 1038 /** shows some window e.g. 'about' (toggle visibility if show is null) |
| 1039 * | |
| 1040 */ | |
| 635 | 1041 var showDiv = function (isVisible, $div, show) { |
| 645 | 1042 if (show == null) { |
| 635 | 1043 // toggle visibility |
| 1044 isVisible = !isVisible; | |
| 1045 } else { | |
| 1046 // set visibility | |
| 1047 isVisible = show; | |
|
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more cosmetics: added options to validate with http://www.jslint.com
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changeset
|
1048 } |
| 635 | 1049 if (isVisible) { |
| 1050 $div.fadeIn(); | |
| 1051 } else { | |
| 1052 $div.fadeOut(); | |
|
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more cosmetics: added options to validate with http://www.jslint.com
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diff
changeset
|
1053 } |
| 635 | 1054 return isVisible; |
| 634 | 1055 }; |
| 616 | 1056 |
| 949 | 1057 /** Create Transform from zoom area and image size and parameters. |
| 1058 * Returns Transform between normalized coordinates and image pixel coordinates. | |
| 1059 */ | |
|
772
33b5477f8d84
original size mode works with zoom area now. needs error handling.
robcast
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769
diff
changeset
|
1060 var getImgTrafo = function ($img, area, rot, hmir, vmir, mode, data) { |
|
658
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diff
changeset
|
1061 var picrect = geom.rectangle($img); |
| 949 | 1062 // handle pixel-by-pixel and original-size modes |
|
763
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pixel-by-pixel scale mode works with zoom area. (not in all cases)
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diff
changeset
|
1063 if (mode != null) { |
|
772
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original size mode works with zoom area now. needs error handling.
robcast
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diff
changeset
|
1064 var imgInfo = data.imgInfo; |
|
763
31664707999e
pixel-by-pixel scale mode works with zoom area. (not in all cases)
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761
diff
changeset
|
1065 if (mode === 'pixel') { |
|
31664707999e
pixel-by-pixel scale mode works with zoom area. (not in all cases)
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diff
changeset
|
1066 // scaler mo=clip - image area size does not come from ww, wh |
|
31664707999e
pixel-by-pixel scale mode works with zoom area. (not in all cases)
robcast
parents:
761
diff
changeset
|
1067 if (imgInfo != null) { |
|
31664707999e
pixel-by-pixel scale mode works with zoom area. (not in all cases)
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761
diff
changeset
|
1068 area.width = picrect.width / imgInfo.width; |
|
31664707999e
pixel-by-pixel scale mode works with zoom area. (not in all cases)
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diff
changeset
|
1069 area.height = picrect.height / imgInfo.height; |
|
31664707999e
pixel-by-pixel scale mode works with zoom area. (not in all cases)
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parents:
761
diff
changeset
|
1070 } else { |
|
31664707999e
pixel-by-pixel scale mode works with zoom area. (not in all cases)
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diff
changeset
|
1071 console.error("No image info for pixel mode!"); |
|
31664707999e
pixel-by-pixel scale mode works with zoom area. (not in all cases)
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diff
changeset
|
1072 } |
|
31664707999e
pixel-by-pixel scale mode works with zoom area. (not in all cases)
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diff
changeset
|
1073 } |
|
772
33b5477f8d84
original size mode works with zoom area now. needs error handling.
robcast
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diff
changeset
|
1074 if (mode === 'size') { |
|
33b5477f8d84
original size mode works with zoom area now. needs error handling.
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diff
changeset
|
1075 // scaler mo=osize - image area size does not come from ww, wh |
|
33b5477f8d84
original size mode works with zoom area now. needs error handling.
robcast
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diff
changeset
|
1076 if (imgInfo != null) { |
|
33b5477f8d84
original size mode works with zoom area now. needs error handling.
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diff
changeset
|
1077 var ddpi = parseFloat(data.settings.ddpi); |
|
33b5477f8d84
original size mode works with zoom area now. needs error handling.
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diff
changeset
|
1078 area.width = (picrect.width / ddpi) / (imgInfo.width / imgInfo.dpi_x); |
|
33b5477f8d84
original size mode works with zoom area now. needs error handling.
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diff
changeset
|
1079 area.height = (picrect.height / ddpi) / (imgInfo.height / imgInfo.dpi_y); |
|
33b5477f8d84
original size mode works with zoom area now. needs error handling.
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diff
changeset
|
1080 } else { |
|
33b5477f8d84
original size mode works with zoom area now. needs error handling.
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diff
changeset
|
1081 console.error("No image info for original size mode!"); |
|
33b5477f8d84
original size mode works with zoom area now. needs error handling.
robcast
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diff
changeset
|
1082 } |
|
33b5477f8d84
original size mode works with zoom area now. needs error handling.
robcast
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diff
changeset
|
1083 } |
|
763
31664707999e
pixel-by-pixel scale mode works with zoom area. (not in all cases)
robcast
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761
diff
changeset
|
1084 } |
|
658
9ddcf0070122
split bird's view code in two more parts, analog to scaler-img code.
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diff
changeset
|
1085 var trafo = geom.transform(); |
| 675 | 1086 // move zoom area offset to center |
|
658
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diff
changeset
|
1087 trafo.concat(trafo.getTranslation(geom.position(-area.x, -area.y))); |
| 675 | 1088 // scale zoom area size to [1,1] |
|
658
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split bird's view code in two more parts, analog to scaler-img code.
robcast
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diff
changeset
|
1089 trafo.concat(trafo.getScale(geom.size(1/area.width, 1/area.height))); |
| 675 | 1090 // rotate and mirror (around transformed image center i.e. [0.5,0.5]) |
| 1091 if (rot || hmir || vmir) { | |
| 1092 // move [0.5,0.5] to center | |
| 1093 trafo.concat(trafo.getTranslation(geom.position(-0.5, -0.5))); | |
| 1094 if (hmir) { | |
| 1095 // mirror about center | |
| 1096 trafo.concat(trafo.getMirror('y')); | |
|
713
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more cosmetics: added options to validate with http://www.jslint.com
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parents:
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diff
changeset
|
1097 } |
| 675 | 1098 if (vmir) { |
| 1099 // mirror about center | |
| 1100 trafo.concat(trafo.getMirror('x')); | |
|
713
c1fa722c570e
more cosmetics: added options to validate with http://www.jslint.com
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diff
changeset
|
1101 } |
| 675 | 1102 if (rot) { |
| 1103 // rotate around center | |
| 1104 trafo.concat(trafo.getRotation(parseFloat(rot))); | |
|
713
c1fa722c570e
more cosmetics: added options to validate with http://www.jslint.com
robcast
parents:
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diff
changeset
|
1105 } |
| 675 | 1106 // move back |
| 1107 trafo.concat(trafo.getTranslation(geom.position(0.5, 0.5))); | |
|
713
c1fa722c570e
more cosmetics: added options to validate with http://www.jslint.com
robcast
parents:
711
diff
changeset
|
1108 } |
|
664
d5a5ee4cbf04
work on getting transformation to work with rotation (currently still doesn't)
robcast
parents:
663
diff
changeset
|
1109 // scale to screen position and size |
|
658
9ddcf0070122
split bird's view code in two more parts, analog to scaler-img code.
robcast
parents:
656
diff
changeset
|
1110 trafo.concat(trafo.getScale(picrect)); |
|
9ddcf0070122
split bird's view code in two more parts, analog to scaler-img code.
robcast
parents:
656
diff
changeset
|
1111 trafo.concat(trafo.getTranslation(picrect)); |
|
9ddcf0070122
split bird's view code in two more parts, analog to scaler-img code.
robcast
parents:
656
diff
changeset
|
1112 return trafo; |
| 655 | 1113 }; |
|
678
d50d24b7fd95
first step at dragging birdview zoom indicator around
hertzhaft
parents:
677
diff
changeset
|
1114 |
| 949 | 1115 /** update current scaler image transform |
| 1116 */ | |
| 767 | 1117 var updateImgTrafo = function (data) { |
| 1118 var $img = data.$img; | |
| 895 | 1119 if ($img == null) |
| 1120 return; | |
| 1121 var imgLoaded = $.browser.msie | |
| 949 | 1122 ? $img.prop('width') > 0 |
| 1123 : $img.prop('complete'); | |
|
950
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much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1124 if (imgLoaded || data.hasPreviewBg) { |
| 949 | 1125 // create Transform from current zoomArea and image size |
| 1126 data.imgTrafo = getImgTrafo($img, data.zoomArea, data.settings.rot, | |
| 1127 data.scalerFlags.hmir, data.scalerFlags.vmir, | |
| 1128 data.scaleMode, data); | |
| 1129 console.debug("imgTrafo=", data.imgTrafo); | |
| 1130 } | |
| 767 | 1131 }; |
| 775 | 1132 |
| 949 | 1133 /** return handler for load event of scaler img |
| 1134 * (necessary for closure with data object) | |
| 1135 */ | |
| 767 | 1136 var scalerImgLoadedHandler = function (data) { |
| 1137 return function () { | |
| 1138 var $img = $(this); | |
| 1139 console.debug("scaler img loaded=",$img); | |
| 1140 var $scaler = data.$scaler; | |
|
760
f0be4432f515
primitive plugin extension mechanism - unsure how useful this is
hertzhaft
parents:
755
diff
changeset
|
1141 var imgRect = geom.rectangle($img); |
| 931 | 1142 data.imgRect = imgRect; |
| 934 | 1143 // reset busy cursor |
| 1144 $('body').css('cursor', 'auto'); | |
| 1145 $scaler.css('cursor', 'auto'); | |
| 957 | 1146 // adjust scaler div size (beware: setting position makes the element relative) |
| 1147 imgRect.getSize().adjustDiv($scaler); | |
| 715 | 1148 // show image in case it was hidden (for example in zoomDrag) |
| 733 | 1149 $img.css('visibility', 'visible'); |
|
952
e3dc84cbb766
disable forced load event causing problem with firefox.
robcast
parents:
951
diff
changeset
|
1150 $scaler.css({'opacity' : '1', 'background' : 'transparent'}); |
|
950
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1151 data.hasPreviewBg = false; |
| 767 | 1152 // update display (render marks, etc.) |
| 1153 updateDisplay(data); | |
|
658
9ddcf0070122
split bird's view code in two more parts, analog to scaler-img code.
robcast
parents:
656
diff
changeset
|
1154 }; |
|
9ddcf0070122
split bird's view code in two more parts, analog to scaler-img code.
robcast
parents:
656
diff
changeset
|
1155 }; |
|
9ddcf0070122
split bird's view code in two more parts, analog to scaler-img code.
robcast
parents:
656
diff
changeset
|
1156 |
| 949 | 1157 /** handle imageInfo loaded event |
| 1158 * | |
| 1159 */ | |
| 797 | 1160 var handleImageInfo = function (evt, json) { |
| 917 | 1161 console.debug("handleImageInfo:", json); |
| 797 | 1162 var data = this; |
| 1163 updateDisplay(data); | |
| 1164 }; | |
| 813 | 1165 |
| 949 | 1166 /** handle changeZoomArea event |
| 1167 * | |
| 1168 */ | |
| 942 | 1169 var handleChangeZoomArea = function (evt, newZa) { |
| 1170 console.debug("handleChangeZoomArea:", newZa); | |
| 1171 var data = this; | |
|
950
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much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1172 data.$elem.find(".overlay").hide(); // hide all overlays (marks/regions) |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1173 setPreviewBg(data, newZa); |
| 942 | 1174 }; |
| 1175 | |
| 1176 | |
| 949 | 1177 /** place marks on the image |
| 1178 * | |
| 1179 */ | |
| 633 | 1180 var renderMarks = function (data) { |
| 767 | 1181 if (data.$img == null || data.imgTrafo == null) return; |
|
850
47a6b93bde43
always show html-defined regions. wrong pos still not fixed
hertzhaft
parents:
849
diff
changeset
|
1182 console.debug("renderMarks: img=",data.$img," imgtrafo=",data.imgTrafo); |
| 647 | 1183 var $elem = data.$elem; |
| 643 | 1184 var marks = data.marks; |
|
742
2b6d3ef57d68
fixed problem with setmark, zoomarea and zoomDrag handlers.
robcast
parents:
741
diff
changeset
|
1185 // clear marks |
|
2b6d3ef57d68
fixed problem with setmark, zoomarea and zoomDrag handlers.
robcast
parents:
741
diff
changeset
|
1186 $elem.find('div.mark').remove(); |
| 633 | 1187 for (var i = 0; i < marks.length; i++) { |
| 1188 var mark = marks[i]; | |
| 643 | 1189 if (data.zoomArea.containsPosition(mark)) { |
| 633 | 1190 var mpos = data.imgTrafo.transform(mark); |
| 851 | 1191 console.debug("renderMarks: pos=",mpos); |
| 633 | 1192 // create mark |
| 813 | 1193 var html = '<div class="mark overlay">'+(i+1)+'</div>'; |
| 633 | 1194 var $mark = $(html); |
|
850
47a6b93bde43
always show html-defined regions. wrong pos still not fixed
hertzhaft
parents:
849
diff
changeset
|
1195 $mark.attr("id", "digilib-mark-"+(i+1)); |
| 633 | 1196 $elem.append($mark); |
|
742
2b6d3ef57d68
fixed problem with setmark, zoomarea and zoomDrag handlers.
robcast
parents:
741
diff
changeset
|
1197 mpos.adjustDiv($mark); |
|
713
c1fa722c570e
more cosmetics: added options to validate with http://www.jslint.com
robcast
parents:
711
diff
changeset
|
1198 } |
|
c1fa722c570e
more cosmetics: added options to validate with http://www.jslint.com
robcast
parents:
711
diff
changeset
|
1199 } |
| 633 | 1200 }; |
| 655 | 1201 |
| 949 | 1202 /** zoom by the given factor. |
| 1203 * | |
| 1204 */ | |
| 643 | 1205 var zoomBy = function(data, factor) { |
| 1206 var area = data.zoomArea; | |
| 1207 var newarea = area.copy(); | |
| 1208 // scale | |
| 1209 newarea.width /= factor; | |
| 1210 newarea.height /= factor; | |
| 1211 // and recenter | |
| 1212 newarea.x -= 0.5 * (newarea.width - area.width); | |
| 1213 newarea.y -= 0.5 * (newarea.height - area.height); | |
|
735
790a7673bef0
improved some embedded buttons; fixed reset function
hertzhaft
parents:
733
diff
changeset
|
1214 newarea = FULL_AREA.fit(newarea); |
|
950
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1215 setZoomArea(data, newarea); |
| 972 | 1216 // reset modes |
| 1217 setScaleMode(data, 'screen'); | |
| 1218 setFitMode(data, 'both'); | |
|
644
ee8ccd84c5f8
reload doesn't take list of changed parameters any more
robcast
parents:
643
diff
changeset
|
1219 redisplay(data); |
| 643 | 1220 }; |
| 1221 | |
| 949 | 1222 /** add a mark where clicked. |
| 1223 * | |
| 1224 */ | |
| 647 | 1225 var setMark = function (data) { |
| 649 | 1226 var $scaler = data.$scaler; |
|
742
2b6d3ef57d68
fixed problem with setmark, zoomarea and zoomDrag handlers.
robcast
parents:
741
diff
changeset
|
1227 // unbind other handler |
| 917 | 1228 $scaler.off(".dlZoomDrag"); |
| 647 | 1229 // start event capturing |
|
742
2b6d3ef57d68
fixed problem with setmark, zoomarea and zoomDrag handlers.
robcast
parents:
741
diff
changeset
|
1230 $scaler.one('mousedown.dlSetMark', function (evt) { |
| 647 | 1231 // event handler adding a new mark |
|
742
2b6d3ef57d68
fixed problem with setmark, zoomarea and zoomDrag handlers.
robcast
parents:
741
diff
changeset
|
1232 console.log("setmark at=", evt); |
|
672
7f7536a5b6d9
image transform works now under rotation!!! (at least for multiples of 90deg)
robcast
parents:
671
diff
changeset
|
1233 var mpos = geom.position(evt); |
| 647 | 1234 var pos = data.imgTrafo.invtransform(mpos); |
| 1235 data.marks.push(pos); | |
| 1236 redisplay(data); | |
|
742
2b6d3ef57d68
fixed problem with setmark, zoomarea and zoomDrag handlers.
robcast
parents:
741
diff
changeset
|
1237 return false; |
| 647 | 1238 }); |
| 1239 }; | |
| 668 | 1240 |
| 949 | 1241 /** zoom to the area around two clicked points. |
| 1242 * | |
| 1243 */ | |
| 654 | 1244 var zoomArea = function(data) { |
| 1245 $elem = data.$elem; | |
| 1246 $scaler = data.$scaler; | |
| 1247 var pt1, pt2; | |
| 1248 var $zoomDiv = $('<div class="zoomrect" style="display:none"/>'); | |
| 1249 $elem.append($zoomDiv); | |
| 775 | 1250 // $zoomDiv.css(data.settings.zoomrectStyle); |
| 654 | 1251 var picRect = geom.rectangle($scaler); |
| 1252 // FIX ME: is there a way to query the border width from CSS info? | |
| 1253 // rect.x -= 2; // account for overlay borders | |
| 1254 // rect.y -= 2; | |
| 1255 | |
| 1256 var zoomStart = function (evt) { | |
| 1257 pt1 = geom.position(evt); | |
| 1258 // setup and show zoom div | |
| 738 | 1259 pt1.adjustDiv($zoomDiv); |
| 668 | 1260 $zoomDiv.width(0).height(0); |
| 654 | 1261 $zoomDiv.show(); |
| 1262 // register events | |
| 917 | 1263 $elem.on("mousemove.dlZoomArea", zoomMove); |
| 1264 $elem.on("mouseup.dlZoomArea", zoomEnd); | |
| 654 | 1265 return false; |
| 1266 }; | |
| 668 | 1267 |
| 741 | 1268 // mouse move handler |
| 1269 var zoomMove = function (evt) { | |
| 1270 pt2 = geom.position(evt); | |
| 1271 var rect = geom.rectangle(pt1, pt2); | |
| 1272 rect.clipTo(picRect); | |
| 1273 // update zoom div | |
| 1274 rect.adjustDiv($zoomDiv); | |
| 1275 return false; | |
| 1276 }; | |
|
745
ad483c008159
move birdview zoom indicator along with zoom drag
hertzhaft
parents:
744
diff
changeset
|
1277 |
| 654 | 1278 // mouseup handler: end moving |
| 1279 var zoomEnd = function (evt) { | |
| 1280 pt2 = geom.position(evt); | |
| 1281 // assume a click and continue if the area is too small | |
| 1282 var clickRect = geom.rectangle(pt1, pt2); | |
| 710 | 1283 if (clickRect.getArea() <= 5) return false; |
| 654 | 1284 // hide zoom div |
| 1285 $zoomDiv.remove(); | |
| 1286 // unregister events | |
| 917 | 1287 $elem.off("mousemove.dlZoomArea", zoomMove); |
| 1288 $elem.off("mouseup.dlZoomArea", zoomEnd); | |
| 654 | 1289 // clip and transform |
| 1290 clickRect.clipTo(picRect); | |
| 1291 var area = data.imgTrafo.invtransform(clickRect); | |
|
951
9c699b6cfcca
preview for ZoomArea. shows distortions when changing aspect ratio.
robcast
parents:
950
diff
changeset
|
1292 setZoomArea(data, area); |
| 972 | 1293 // reset modes |
| 1294 setFitMode(data, 'both'); | |
| 1295 setScaleMode(data, 'screen'); | |
| 654 | 1296 redisplay(data); |
| 1297 return false; | |
| 1298 }; | |
| 668 | 1299 |
|
742
2b6d3ef57d68
fixed problem with setmark, zoomarea and zoomDrag handlers.
robcast
parents:
741
diff
changeset
|
1300 // clear old handler (also ZoomDrag) |
| 917 | 1301 $scaler.off('.dlZoomArea'); |
| 1302 $scaler.off(".dlZoomDrag"); | |
| 1303 $elem.off('.dlZoomArea'); | |
| 654 | 1304 // bind start zoom handler |
| 738 | 1305 $scaler.one('mousedown.dlZoomArea', zoomStart); |
| 654 | 1306 }; |
| 647 | 1307 |
|
950
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1308 /** set preview background. |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1309 * optional newZoomArea scales and moves background to preview. |
| 949 | 1310 */ |
|
950
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1311 var setPreviewBg = function(data, newZoomArea) { |
|
746
2e9a48dc7a0c
move zoom-drag background along with birdview indicator
hertzhaft
parents:
745
diff
changeset
|
1312 var $scaler = data.$scaler; |
|
2e9a48dc7a0c
move zoom-drag background along with birdview indicator
hertzhaft
parents:
745
diff
changeset
|
1313 var $img = data.$img; |
|
950
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1314 var imgTrafo = data.imgTrafo; |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1315 var scalerPos = geom.position($scaler); |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1316 var bgRect = null; |
|
746
2e9a48dc7a0c
move zoom-drag background along with birdview indicator
hertzhaft
parents:
745
diff
changeset
|
1317 // hide the scaler img, show background of div instead |
|
2e9a48dc7a0c
move zoom-drag background along with birdview indicator
hertzhaft
parents:
745
diff
changeset
|
1318 $img.css('visibility', 'hidden'); |
|
918
f7869186ccb2
use current size background as well as scaled full-size background when dragging
robcast
parents:
917
diff
changeset
|
1319 // use current image as first background |
|
746
2e9a48dc7a0c
move zoom-drag background along with birdview indicator
hertzhaft
parents:
745
diff
changeset
|
1320 var scalerCss = { |
|
950
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1321 'background-image' : 'url(' + $img.attr('src') + ')', |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1322 'background-repeat' : 'no-repeat', |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1323 'background-position' : '0px 0px', |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1324 'opacity' : '0.7', |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1325 'cursor' : 'move' |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1326 }; |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1327 if (newZoomArea != null) { |
|
953
3d5e7458f9ae
fixed birdseye region positioning after layout reflow.
robcast
parents:
952
diff
changeset
|
1328 // check if aspect ratio has changed |
|
3d5e7458f9ae
fixed birdseye region positioning after layout reflow.
robcast
parents:
952
diff
changeset
|
1329 if (newZoomArea.getAspect() !== data.zoomArea.getAspect()) { |
|
3d5e7458f9ae
fixed birdseye region positioning after layout reflow.
robcast
parents:
952
diff
changeset
|
1330 console.debug("aspect ratio changed!"); |
| 954 | 1331 // what now? |
|
953
3d5e7458f9ae
fixed birdseye region positioning after layout reflow.
robcast
parents:
952
diff
changeset
|
1332 } |
| 976 | 1333 // get transform for new zoomArea (use 'screen' instead of data.scaleMode) |
|
950
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1334 imgTrafo = getImgTrafo($img, newZoomArea, data.settings.rot, |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1335 data.scalerFlags.hmir, data.scalerFlags.vmir, |
| 976 | 1336 'screen', data); |
|
950
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1337 // for new background coordinates transform old zoomArea with new Transform |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1338 bgRect = imgTrafo.transform(data.zoomArea); |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1339 // correct offset because background is relative |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1340 bgRect.addPosition(scalerPos.neg()); |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1341 // position background |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1342 scalerCss['background-position'] = Math.round(bgRect.x) + 'px '+ Math.round(bgRect.y) + 'px'; |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1343 } |
|
746
2e9a48dc7a0c
move zoom-drag background along with birdview indicator
hertzhaft
parents:
745
diff
changeset
|
1344 if (data.hasBgSize) { |
|
950
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1345 // scale background using CSS3-background-size |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1346 if (bgRect != null && (bgRect.height < data.settings.maxBgSize && bgRect.width < data.settings.maxBgSize)) { |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1347 scalerCss[data.bgSizeName] = Math.round(bgRect.width) + 'px ' + Math.round(bgRect.height) + 'px'; |
| 944 | 1348 } else { |
| 1349 scalerCss[data.bgSizeName] = 'auto'; | |
| 1350 } | |
|
950
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1351 // additional full-size background using CSS3 |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1352 fullRect = imgTrafo.transform(FULL_AREA); |
|
746
2e9a48dc7a0c
move zoom-drag background along with birdview indicator
hertzhaft
parents:
745
diff
changeset
|
1353 if (fullRect.height < data.settings.maxBgSize && fullRect.width < data.settings.maxBgSize) { |
|
2e9a48dc7a0c
move zoom-drag background along with birdview indicator
hertzhaft
parents:
745
diff
changeset
|
1354 // correct offset because background is relative |
|
751
00b7857f07f5
zoom-drag background follows birdZoom also in embedded mode (still imprecise)
hertzhaft
parents:
748
diff
changeset
|
1355 fullRect.addPosition(scalerPos.neg()); |
| 954 | 1356 var url = getPreviewImgUrl(data); |
|
950
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1357 // add second background url, size and position |
|
918
f7869186ccb2
use current size background as well as scaled full-size background when dragging
robcast
parents:
917
diff
changeset
|
1358 scalerCss['background-image'] += ', url(' + url + ')'; |
|
950
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1359 scalerCss[data.bgSizeName] += ', ' + Math.round(fullRect.width) + 'px ' + Math.round(fullRect.height) + 'px'; |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1360 scalerCss['background-position'] += ', ' + Math.round(fullRect.x) + 'px '+ Math.round(fullRect.y) + 'px'; |
|
746
2e9a48dc7a0c
move zoom-drag background along with birdview indicator
hertzhaft
parents:
745
diff
changeset
|
1361 } |
|
918
f7869186ccb2
use current size background as well as scaled full-size background when dragging
robcast
parents:
917
diff
changeset
|
1362 } |
|
f7869186ccb2
use current size background as well as scaled full-size background when dragging
robcast
parents:
917
diff
changeset
|
1363 $scaler.css(scalerCss); |
| 942 | 1364 data.hasPreviewBg = true; |
|
929
e881ab1c2f47
first step to "preview" like zoom-drag for more operations
robcast
parents:
928
diff
changeset
|
1365 }; |
|
e881ab1c2f47
first step to "preview" like zoom-drag for more operations
robcast
parents:
928
diff
changeset
|
1366 |
| 949 | 1367 /** setup handlers for dragging the zoomed image. |
| 1368 * | |
| 1369 */ | |
| 705 | 1370 var setupZoomDrag = function(data) { |
| 942 | 1371 var startPos, delta; |
| 733 | 1372 var $document = $(document); |
| 795 | 1373 var $data = $(data); |
| 705 | 1374 var $elem = data.$elem; |
| 1375 var $scaler = data.$scaler; | |
| 1376 var $img = data.$img; | |
| 710 | 1377 |
| 733 | 1378 // drag the image and load a new detail on mouse up |
| 705 | 1379 var dragStart = function (evt) { |
| 944 | 1380 // cancel if not left-click |
| 1381 if (evt.which != 1) return; | |
| 813 | 1382 console.debug("dragstart at=", evt); |
|
737
7c93bdbb5153
setup zoomdrag even when image is not initially zoomed
hertzhaft
parents:
736
diff
changeset
|
1383 // don't start dragging if not zoomed |
|
7c93bdbb5153
setup zoomdrag even when image is not initially zoomed
hertzhaft
parents:
736
diff
changeset
|
1384 if (isFullArea(data.zoomArea)) return false; |
| 813 | 1385 $elem.find(".overlay").hide(); // hide all overlays (marks/regions) |
| 733 | 1386 startPos = geom.position(evt); |
| 741 | 1387 delta = null; |
|
746
2e9a48dc7a0c
move zoom-drag background along with birdview indicator
hertzhaft
parents:
745
diff
changeset
|
1388 // set low res background immediately on mousedown |
|
950
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1389 setPreviewBg(data); |
| 917 | 1390 $document.on("mousemove.dlZoomDrag", dragMove); |
| 1391 $document.on("mouseup.dlZoomDrag", dragEnd); | |
|
713
c1fa722c570e
more cosmetics: added options to validate with http://www.jslint.com
robcast
parents:
711
diff
changeset
|
1392 return false; |
| 705 | 1393 }; |
|
745
ad483c008159
move birdview zoom indicator along with zoom drag
hertzhaft
parents:
744
diff
changeset
|
1394 |
| 733 | 1395 // mousemove handler: drag zoomed image |
| 705 | 1396 var dragMove = function (evt) { |
| 1397 var pos = geom.position(evt); | |
| 741 | 1398 delta = startPos.delta(pos); |
|
807
1b1728926534
geometry: overlapsRect() plus some comment clarifications
hertzhaft
parents:
799
diff
changeset
|
1399 // send message event with current zoom position |
|
745
ad483c008159
move birdview zoom indicator along with zoom drag
hertzhaft
parents:
744
diff
changeset
|
1400 var za = geom.rectangle($img); |
|
ad483c008159
move birdview zoom indicator along with zoom drag
hertzhaft
parents:
744
diff
changeset
|
1401 za.addPosition(delta.neg()); |
| 947 | 1402 // transform back |
| 1403 var newArea = data.imgTrafo.invtransform(za); | |
| 1404 $data.trigger('changeZoomArea', newArea); | |
| 705 | 1405 return false; |
| 1406 }; | |
| 710 | 1407 |
| 733 | 1408 // mouseup handler: reload zoomed image in new position |
| 705 | 1409 var dragEnd = function (evt) { |
| 739 | 1410 $scaler.css('cursor', 'auto'); |
| 917 | 1411 $document.off("mousemove.dlZoomDrag", dragMove); |
| 1412 $document.off("mouseup.dlZoomDrag", dragEnd); | |
| 733 | 1413 if (delta == null || delta.distance() < 2) { |
| 1414 // no movement | |
| 1415 $img.css('visibility', 'visible'); | |
| 741 | 1416 $scaler.css({'opacity' : '1', 'background-image' : 'none'}); |
| 944 | 1417 data.hasPreviewBg = false; |
| 767 | 1418 // unhide marks |
| 1419 data.$elem.find('div.mark').show(); | |
| 813 | 1420 $(data).trigger('redisplay'); |
| 733 | 1421 return false; |
| 1422 } | |
| 1423 // get old zoom area (screen coordinates) | |
| 741 | 1424 var za = geom.rectangle($img); |
| 733 | 1425 // move |
| 741 | 1426 za.addPosition(delta.neg()); |
| 733 | 1427 // transform back |
| 1428 var newArea = data.imgTrafo.invtransform(za); | |
|
735
790a7673bef0
improved some embedded buttons; fixed reset function
hertzhaft
parents:
733
diff
changeset
|
1429 data.zoomArea = FULL_AREA.fit(newArea); |
|
708
120ace160386
img reload works for fullscreen, but somehow not precise
hertzhaft
parents:
707
diff
changeset
|
1430 redisplay(data); |
| 705 | 1431 return false; |
| 1432 }; | |
|
735
790a7673bef0
improved some embedded buttons; fixed reset function
hertzhaft
parents:
733
diff
changeset
|
1433 |
| 733 | 1434 // clear old handler |
| 917 | 1435 $document.off(".dlZoomDrag"); |
| 1436 $scaler.off(".dlZoomDrag"); | |
|
742
2b6d3ef57d68
fixed problem with setmark, zoomarea and zoomDrag handlers.
robcast
parents:
741
diff
changeset
|
1437 if (! isFullArea(data.zoomArea)) { |
|
2b6d3ef57d68
fixed problem with setmark, zoomarea and zoomDrag handlers.
robcast
parents:
741
diff
changeset
|
1438 // set handler |
| 917 | 1439 $scaler.on("mousedown.dlZoomDrag", dragStart); |
|
742
2b6d3ef57d68
fixed problem with setmark, zoomarea and zoomDrag handlers.
robcast
parents:
741
diff
changeset
|
1440 } |
| 705 | 1441 }; |
| 1442 | |
|
950
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1443 /** set the zoom area. |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1444 * also triggers "changeZoomArea" event. |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1445 */ |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1446 var setZoomArea = function(data, za) { |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1447 $(data).trigger('changeZoomArea', za); |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1448 data.oldZoomArea = data.zoomArea; |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1449 data.zoomArea = za; |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1450 }; |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1451 |
| 949 | 1452 /** get image quality as a number (0..2). |
| 1453 * | |
| 1454 */ | |
| 703 | 1455 var getQuality = function (data) { |
| 1456 var flags = data.scalerFlags; | |
| 1457 var q = flags.q2 || flags.q1 || 'q0'; // assume q0 as default | |
| 1458 return parseInt(q[1], 10); | |
| 706 | 1459 }; |
| 703 | 1460 |
| 949 | 1461 /** set image quality as a number (0..2). |
| 1462 * | |
| 1463 */ | |
| 703 | 1464 var setQuality = function (data, qual) { |
| 1465 var flags = data.scalerFlags; | |
| 1466 // clear flags | |
| 1467 for (var i = 0; i < 3; ++i) { | |
| 1468 delete flags['q'+i]; | |
|
713
c1fa722c570e
more cosmetics: added options to validate with http://www.jslint.com
robcast
parents:
711
diff
changeset
|
1469 } |
| 703 | 1470 flags['q'+qual] = 'q'+qual; |
| 706 | 1471 }; |
| 710 | 1472 |
| 949 | 1473 /** get image scale mode (screen, pixel, size). |
| 1474 * | |
| 1475 */ | |
|
761
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1476 var getScaleMode = function (data) { |
|
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1477 if (data.scalerFlags.clip != null) { |
|
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1478 return 'pixel'; |
|
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1479 } else if (data.scalerFlags.osize != null) { |
|
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1480 return 'size'; |
|
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1481 } |
|
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1482 // mo=fit is default |
|
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1483 return 'screen'; |
|
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1484 }; |
| 775 | 1485 |
| 949 | 1486 /** set image scale mode (screen, pixel, size). |
| 1487 * | |
| 1488 */ | |
|
761
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1489 var setScaleMode = function (data, mode) { |
|
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1490 delete data.scalerFlags.fit; |
|
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1491 delete data.scalerFlags.clip; |
|
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1492 delete data.scalerFlags.osize; |
|
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1493 if (mode === 'pixel') { |
|
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1494 data.scalerFlags.clip = 'clip'; |
|
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1495 } else if (mode === 'size') { |
|
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1496 data.scalerFlags.osize = 'osize'; |
|
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1497 } |
|
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1498 // mo=fit is default |
| 972 | 1499 // save mode |
| 1500 data.scaleMode = mode; | |
|
761
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1501 }; |
| 775 | 1502 |
| 972 | 1503 /** get screen fit mode (width, height, both). |
| 1504 * | |
| 1505 */ | |
| 1506 var getFitMode = function (data) { | |
| 1507 if (data.dlOpts.fitwidth != null) { | |
| 1508 return "width"; | |
| 1509 } else if (data.dlOpts.fitheight != null) { | |
| 1510 return "height"; | |
| 1511 } | |
| 1512 // "both" is default | |
| 1513 return "both"; | |
| 1514 }; | |
| 1515 | |
| 1516 /** | |
| 1517 * set screen fit mode (width, height, both). | |
| 1518 */ | |
| 1519 var setFitMode = function (data, mode) { | |
| 984 | 1520 var settings = data.settings; |
| 1521 var imgSize = data.fullscreenImgSize; | |
| 972 | 1522 if (mode === 'width') { |
| 1523 data.dlOpts.fitwidth = 1; | |
| 1524 delete data.dlOpts.fitheight; | |
| 984 | 1525 if (imgSize != null) { |
| 1526 // fitwidth omits destination height | |
| 1527 settings.dw = imgSize.width; | |
| 1528 settings.dh = null; | |
| 1529 } | |
| 972 | 1530 } else if (mode === 'height') { |
| 1531 data.dlOpts.fitheight = 1; | |
| 1532 delete data.dlOpts.fitwidth; | |
| 984 | 1533 if (imgSize != null) { |
| 1534 // fitheight omits destination width | |
| 1535 settings.dw = null; | |
| 1536 settings.dh = imgSize.height; | |
| 1537 } | |
| 972 | 1538 } else { |
| 1539 delete data.dlOpts.fitwidth; | |
| 1540 delete data.dlOpts.fitheight; | |
| 984 | 1541 if (imgSize != null) { |
| 1542 settings.dw = imgSize.width; | |
| 1543 settings.dh = imgSize.height; | |
| 1544 } | |
| 972 | 1545 } |
| 1546 }; | |
| 1547 | |
| 949 | 1548 /** sets a key to a value (relative values with +/- if relative=true). |
| 1549 * | |
| 1550 */ | |
| 650 | 1551 var setNumValue = function(settings, key, value) { |
| 716 | 1552 if (value == null) return null; |
|
955
c8c441d1d7a0
fixed bug with prev/next page. (too quick in using jQuery functions)
robcast
parents:
954
diff
changeset
|
1553 if (isNumber(value)) { |
|
713
c1fa722c570e
more cosmetics: added options to validate with http://www.jslint.com
robcast
parents:
711
diff
changeset
|
1554 settings[key] = value; |
|
c1fa722c570e
more cosmetics: added options to validate with http://www.jslint.com
robcast
parents:
711
diff
changeset
|
1555 return value; |
|
c1fa722c570e
more cosmetics: added options to validate with http://www.jslint.com
robcast
parents:
711
diff
changeset
|
1556 } |
|
c1fa722c570e
more cosmetics: added options to validate with http://www.jslint.com
robcast
parents:
711
diff
changeset
|
1557 var sign = value[0]; |
| 650 | 1558 if (sign === '+' || sign === '-') { |
| 1559 if (settings[key] == null) { | |
|
651
694bdb86cbad
renamed 'actions' to 'buttons' and 'methods' to 'actions'
robcast
parents:
650
diff
changeset
|
1560 // this isn't perfect but still... |
| 650 | 1561 settings[key] = 0; |
|
713
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1562 } |
| 650 | 1563 settings[key] = parseFloat(settings[key]) + parseFloat(value); |
| 1564 } else { | |
| 1565 settings[key] = value; | |
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1566 } |
| 650 | 1567 return settings[key]; |
| 1568 }; | |
| 655 | 1569 |
| 949 | 1570 /** return width of border on $elem. |
| 1571 * assumes equal border width on all sides. | |
| 1572 */ | |
| 775 | 1573 var getBorderWidth = function($elem) { |
| 1574 var border = $elem.outerWidth() - $elem.width(); | |
| 1575 return border/2; | |
| 1576 }; | |
| 1577 | |
| 949 | 1578 /** return if the current zoomarea can be moved further. |
| 1579 * | |
| 1580 */ | |
| 878 | 1581 var canMove = function(data, movx, movy) { |
| 1582 var za = data.zoomArea; | |
| 1583 if (isFullArea(za)) return false; | |
| 1584 var x2 = za.x + za.width; | |
| 1585 var y2 = za.y + za.height; | |
| 949 | 1586 return (((movx < 0) && (za.x > 0)) |
| 878 | 1587 || ((movx > 0) && (x2 < 1.0)) |
| 1588 || ((movy < 0) && (za.y > 0)) | |
| 949 | 1589 || ((movy > 0) && (y2 < 1.0))); |
| 878 | 1590 }; |
| 1591 | |
| 949 | 1592 /** return if area is maximal. |
| 1593 * | |
| 1594 */ | |
| 795 | 1595 var isFullArea = function (area) { |
| 659 | 1596 return (area.width === 1.0) && (area.height === 1.0); |
| 655 | 1597 }; |
| 1598 | |
|
955
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1599 /** return if the argument is a number. |
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1600 * from Douglas Crockford, A.10. |
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1601 * this is different from $.isNumeric(). |
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1602 */ |
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1603 var isNumber = function (value) { |
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1604 return typeof value === 'number' && isFinite(value); |
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1605 }; |
| 949 | 1606 /** return number with reduced precision. |
| 1607 * ("crop senseless precision") | |
| 1608 */ | |
| 631 | 1609 var cropFloat = function (x) { |
| 637 | 1610 return parseInt(10000 * x, 10) / 10000; |
| 631 | 1611 }; |
| 655 | 1612 |
| 949 | 1613 /** return string from number with reduced precision. |
| 1614 * | |
| 1615 */ | |
| 813 | 1616 var cropFloatStr = function (x) { |
| 1617 return cropFloat(x).toString(); | |
| 1618 }; | |
| 1619 | |
| 692 | 1620 // fallback for console.log calls |
| 1621 if (customConsole) { | |
| 1622 var logFunction = function(type) { | |
| 1623 return function(){ | |
| 1624 var $debug = $('#debug'); // debug div | |
| 1625 if (!$debug) return; | |
| 1626 var args = Array.prototype.slice.call(arguments); | |
| 1627 var argtext = args.join(' '); | |
| 1628 var $logDiv = $('<div/>'); | |
| 1629 $logDiv.addClass(type); | |
| 1630 $logDiv.text(argtext); | |
| 1631 $debug.append($logDiv); | |
| 1632 }; | |
| 1633 }; | |
| 1634 console.log = logFunction('_log'); | |
| 1635 console.debug = logFunction('_debug'); | |
| 1636 console.error = logFunction('_error'); | |
|
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1637 } |
| 692 | 1638 |
| 949 | 1639 /** functions to export to plugins. |
| 1640 */ | |
| 787 | 1641 fn = { |
| 791 | 1642 geometry : geom, |
| 787 | 1643 parseQueryString : parseQueryString, |
| 1644 getScalerUrl : getScalerUrl, | |
| 1645 getParamString : getParamString, | |
| 1646 getDigilibUrl : getDigilibUrl, | |
| 1647 unpackParams : unpackParams, | |
| 1648 packParams : packParams, | |
| 822 | 1649 packArea : packArea, |
| 1650 packMarks : packMarks, | |
| 1651 packScalerFlags : packScalerFlags, | |
| 795 | 1652 storeOptions : storeOptions, |
| 787 | 1653 redisplay : redisplay, |
| 1654 updateDisplay : updateDisplay, | |
| 791 | 1655 showDiv : showDiv, |
| 983 | 1656 setZoomArea : setZoomArea, |
|
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1657 setPreviewBg : setPreviewBg, |
| 787 | 1658 getImgTrafo : getImgTrafo, |
| 1659 getQuality : getQuality, | |
| 1660 setQuality : setQuality, | |
| 1661 getScaleMode : getScaleMode, | |
| 1662 setScaleMode : setScaleMode, | |
| 972 | 1663 getFitMode : getFitMode, |
| 1664 setFitMode : setFitMode, | |
| 878 | 1665 canMove : canMove, |
| 795 | 1666 isFullArea : isFullArea, |
| 978 | 1667 isNumber : isNumber, |
| 974 | 1668 getFullscreenRect : getFullscreenRect, |
| 813 | 1669 getBorderWidth : getBorderWidth, |
| 1670 cropFloat : cropFloat, | |
| 1671 cropFloatStr : cropFloatStr | |
| 787 | 1672 }; |
| 788 | 1673 |
|
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1674 // hook digilib plugin into jquery |
| 785 | 1675 $.fn.digilib = function (action) { |
|
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1676 // plugin extension mechanism, called when the plugins' code is read |
| 786 | 1677 if (action === 'plugin') { |
| 1678 var plugin = arguments[1]; | |
| 1679 // each plugin needs a name | |
| 1680 if (plugin.name != null) { | |
| 1681 plugins[plugin.name] = plugin; | |
|
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1682 // share common objects |
|
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1683 plugin.defaults = defaults; |
| 947 | 1684 plugin.buttons = buttons; |
|
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1685 plugin.actions = actions; |
|
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1686 plugin.fn = fn; |
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1687 plugin.plugins = plugins; |
|
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1688 // and install |
|
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1689 if (typeof plugin.install === 'function') { |
|
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1690 plugin.install(plugin); |
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1691 } |
| 786 | 1692 } |
|
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1693 // plugins will be initialised when action.init is called |
|
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1694 } else if (actions[action]) { |
|
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1695 // call action on this with the remaining arguments (inserting data as first argument) |
|
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1696 var $elem = $(this); |
|
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1697 var data = $elem.data('digilib'); |
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1698 var args = Array.prototype.slice.call(arguments, 1); |
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1699 args.unshift(data); |
|
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1700 return actions[action].apply(this, args); |
|
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1701 } else if (typeof action === 'object' || !action) { |
|
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1702 // call init on the digilib jQuery object |
|
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1703 return actions.init.apply(this, arguments); |
| 605 | 1704 } else { |
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1705 $.error('action ' + action + ' does not exist on jQuery.digilib'); |
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1706 } |
| 605 | 1707 }; |
| 692 | 1708 |
| 604 | 1709 })(jQuery); |