Mercurial > hg > digilib-old
annotate webapp/src/main/webapp/jquery/jquery.digilib.js @ 1012:dc09bccf8357
better aspect ratio for preview (almost right)
| author | hertzhaft |
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| date | Sat, 18 Feb 2012 17:10:24 +0100 |
| parents | 5f35e97d8ae3 |
| children | 3441e22e2233 |
| 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 |
| 1011 | 41 'version' : 'jquery.digilib.js 2.1.5b2', |
| 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, |
| 995 | 50 // prefix of digilib classes in CSS styles |
| 51 'cssPrefix' : 'dl-', | |
| 610 | 52 // list of Scaler parameters |
| 627 | 53 'scalerParamNames' : ['fn','pn','dw','dh','ww','wh','wx','wy','ws','mo', |
| 54 'rot','cont','brgt','rgbm','rgba','ddpi','ddpix','ddpiy'], | |
| 55 // Scaler parameter defaults | |
| 643 | 56 'pn' : 1, |
| 627 | 57 'ww' : 1.0, |
| 58 'wh' : 1.0, | |
| 59 'wx' : 0.0, | |
| 60 'wy' : 0.0, | |
| 61 'ws' : 1.0, | |
| 643 | 62 'mo' : '', |
| 63 'rot' : 0, | |
| 64 'cont' : 0, | |
| 65 'brgt' : 0, | |
| 66 'rgbm' : '0/0/0', | |
| 67 'rgba' : '0/0/0', | |
| 68 'ddpi' : null, | |
| 69 'ddpix' : null, | |
| 70 'ddpiy' : null, | |
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71 // list of digilib parameters |
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72 'digilibParamNames' : ['fn','pn','ww','wh','wx','wy','ws','mo','rot','cont','brgt','rgbm','rgba','ddpi','mk','clop'], |
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73 // digilib parameter defaults |
| 643 | 74 'mk' : '', |
| 650 | 75 'clop' : '', |
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76 // list of additional parameters (for page outside of digilib) |
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77 'additionalParamNames' : [], |
| 914 | 78 // list of parameters to suppress when generating page URL |
| 79 'suppressParamNames' : null, | |
| 643 | 80 // mode of operation: |
| 81 // fullscreen = take parameters from page URL, keep state in page URL | |
| 82 // embedded = take parameters from Javascript options, keep state inside object | |
| 610 | 83 'interactionMode' : 'fullscreen', |
| 616 | 84 // is the "about" window shown? |
| 741 | 85 'isAboutDivVisible' : false, |
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86 // default size of preview image for drag-scroll (preferrably same as Bird's Eye View image) |
| 954 | 87 'previewImgWidth' : 200, |
| 88 'previewImgHeight' : 200, | |
| 89 // maximum width or height of preview background image for drag-scroll | |
| 778 | 90 'maxBgSize' : 10000, |
| 795 | 91 // parameters used by background image |
| 954 | 92 'previewImgParamNames' : ['fn','pn','dw','dh','mo','rot'], |
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93 // reserved space in full page display (default value accounts for body margins) |
| 990 | 94 'scalerInsets' : { 'x' : 26, 'y': 20 } |
| 610 | 95 }; |
| 655 | 96 |
| 786 | 97 // list of plugins |
| 98 var plugins = {}; | |
| 787 | 99 // object to export functions to plugins |
| 948 | 100 var fn = null; |
| 786 | 101 // affine geometry plugin stub |
| 948 | 102 var geom = null; |
| 944 | 103 // rectangle with maximum zoom area |
| 948 | 104 var FULL_AREA = null; |
| 944 | 105 // limit for float comparison |
| 947 | 106 var EPSILON = 0.0001; |
| 107 // list of buttons | |
| 108 var buttons = {}; | |
| 655 | 109 |
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110 var actions = { |
| 1011 | 111 |
| 954 | 112 /** init: digilib initialization |
| 113 * | |
| 114 * @param options | |
| 115 * @returns | |
| 116 */ | |
| 668 | 117 init : function(options) { |
| 786 | 118 // import geometry classes |
| 119 if (plugins.geometry == null) { | |
| 120 $.error("jquery.digilib.geometry plugin not found!"); | |
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121 // last straw: old version |
| 785 | 122 geom = dlGeometry(); |
| 123 } else { | |
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124 // geometry plugin puts classes in the shared fn |
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125 geom = fn.geometry; |
| 785 | 126 } |
| 127 FULL_AREA = geom.rectangle(0, 0, 1, 1); | |
| 788 | 128 |
| 668 | 129 // settings for this digilib instance are merged from defaults and options |
| 130 var settings = $.extend({}, defaults, options); | |
| 131 var isFullscreen = settings.interactionMode === 'fullscreen'; | |
| 132 var queryParams = {}; | |
| 133 if (isFullscreen) { | |
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134 queryParams = parseQueryParams(); |
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135 // filter additional parameters |
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136 for (var p in queryParams) { |
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137 if ($.inArray(p, settings.digilibParamNames) < 0) { |
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138 settings.additionalParamNames.push(p); |
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139 } |
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140 } |
| 668 | 141 } |
| 142 return this.each(function() { | |
| 143 var $elem = $(this); | |
| 144 var data = $elem.data('digilib'); | |
| 688 | 145 var params, elemSettings; |
| 668 | 146 // if the plugin hasn't been initialized yet |
| 147 if (!data) { | |
| 148 // merge query parameters | |
| 149 if (isFullscreen) { | |
| 688 | 150 params = queryParams; |
| 668 | 151 } else { |
| 688 | 152 params = parseImgParams($elem); |
| 785 | 153 if ($.cookie) { |
| 727 | 154 // retrieve params from cookie |
| 155 var ck = "digilib-embed:fn:" + escape(params.fn) + ":pn:" + (params.pn || '1'); | |
| 785 | 156 var cs = $.cookie(ck); |
| 727 | 157 console.debug("get cookie=", ck, " value=", cs); |
| 158 if (cs) { | |
| 159 var cp = parseQueryString(cs); | |
| 728 | 160 // ignore fn and pn from cookie TODO: should we keep pn? |
| 161 delete cp.fn; | |
| 162 delete cp.pn; | |
| 785 | 163 $.extend(params, cp); |
| 727 | 164 } |
| 165 } | |
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166 } |
| 856 | 167 // setup $elem.data, needs "deep copy" because of nesting |
| 849 | 168 elemSettings = $.extend(true, {}, settings, params); |
| 697 | 169 data = { |
| 856 | 170 // let $(this) know about $(this) :-) |
| 668 | 171 $elem : $elem, |
| 856 | 172 // let $elem have its own copy of settings |
| 668 | 173 settings : elemSettings, |
| 856 | 174 // and of the URL query parameters |
| 965 | 175 queryParams : params |
| 668 | 176 }; |
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177 // store in jQuery data element |
| 668 | 178 $elem.data('digilib', data); |
| 949 | 179 } else { |
| 180 // data exists | |
| 181 elemSettings = data.settings; | |
| 668 | 182 } |
| 183 unpackParams(data); | |
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184 // list of current insets (dynamic for buttons etc.) |
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185 data.currentInsets = {'static' : elemSettings.scalerInsets}; |
| 744 | 186 // check if browser knows *background-size |
| 741 | 187 for (var bs in {'':1, '-moz-':1, '-webkit-':1, '-o-':1}) { |
| 188 if ($elem.css(bs+'background-size')) { | |
| 189 data.hasBgSize = true; | |
| 190 data.bgSizeName = bs+'background-size'; | |
| 191 break; | |
| 192 } | |
| 193 } | |
| 944 | 194 data.hasPreviewBg = false; |
| 942 | 195 // check if browser supports AJAX-like URL-replace without reload |
| 196 data.hasAsyncReload = (typeof history.replaceState === 'function'); | |
| 993 | 197 // check if browser sets complete on cached images |
| 198 data.hasCachedComplete = ! $.browser.mozilla; | |
| 744 | 199 // check digilib base URL |
| 200 if (elemSettings.digilibBaseUrl == null) { | |
| 201 if (isFullscreen) { | |
| 202 // take current host | |
| 203 var url = window.location.toString(); | |
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204 // assume the page lives in [webapp]/jquery/ |
| 915 | 205 var pos = url.indexOf('/jquery/'); |
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206 if (pos > 0) { |
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207 elemSettings.digilibBaseUrl = url.substring(0, pos); |
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208 } |
| 744 | 209 } else { |
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210 // may be we got the scaler URL from the img |
| 744 | 211 var url = elemSettings.scalerBaseUrl; |
| 212 if (url) { | |
| 213 // build it from scaler URL | |
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214 var pos = url.indexOf('/servlet/Scaler'); |
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215 elemSettings.digilibBaseUrl = url.substring(0, pos); |
| 744 | 216 } |
| 217 } | |
| 218 } | |
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219 // check scaler base URL |
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220 if (elemSettings.scalerBaseUrl == null) { |
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221 if (elemSettings.digilibBaseUrl) { |
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222 elemSettings.scalerBaseUrl = elemSettings.digilibBaseUrl + '/servlet/Scaler'; |
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223 } |
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224 } |
| 947 | 225 // set up event handlers |
| 226 $(data).on('update', handleUpdate); // handleUpdate needs to be the first handler for update | |
| 227 $(data).on('changeZoomArea', handleChangeZoomArea); | |
| 786 | 228 // initialise plugins |
| 787 | 229 for (n in plugins) { |
| 230 var p = plugins[n]; | |
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231 if (typeof p.init === 'function') { |
| 946 | 232 // call the plugins init() method |
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233 p.init(data); |
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234 } |
| 786 | 235 } |
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236 // trigger unpack params handlers |
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237 $(data).trigger('unpack'); |
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238 // get image info from server if needed |
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239 if (data.scaleMode === 'pixel' || data.scaleMode === 'size') { |
| 797 | 240 loadImageInfo(data); // triggers "imageInfo" on completion |
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241 } |
| 947 | 242 // create HTML structure for scaler |
| 779 | 243 setupScalerDiv(data); |
| 668 | 244 // about window creation - TODO: could be deferred? restrict to only one item? |
| 245 setupAboutDiv(data); | |
| 795 | 246 // send setup event |
| 247 $(data).trigger('setup'); | |
| 668 | 248 }); |
| 249 }, | |
| 250 | |
| 954 | 251 /** destroy: clean up digilib |
| 252 * | |
| 253 * @param data | |
| 254 * @returns | |
| 255 */ | |
| 668 | 256 destroy : function(data) { |
| 257 return this.each(function(){ | |
| 258 var $elem = $(this); | |
| 917 | 259 $(window).off('.digilib'); // unbind all digilibs(?) |
| 668 | 260 data.digilib.remove(); |
| 261 $elem.removeData('digilib'); | |
| 262 }); | |
| 263 }, | |
| 264 | |
| 954 | 265 /** show or hide the 'about' window |
| 266 * | |
| 267 * @param data | |
| 268 * @param show | |
| 269 */ | |
| 668 | 270 showAboutDiv : function(data, show) { |
| 765 | 271 var on = showDiv(data.settings.isAboutDivVisible, data.$aboutDiv, show); |
| 272 data.settings.isAboutDivVisible = on; | |
| 946 | 273 //FIXME: highlightButtons(data, 'help', on); |
| 668 | 274 }, |
| 655 | 275 |
| 954 | 276 /** goto given page nr (+/-: relative) |
| 277 * | |
| 278 * @param data | |
| 279 * @param pageNr | |
| 280 * @returns {Boolean} | |
| 281 */ | |
| 668 | 282 gotoPage : function (data, pageNr) { |
| 283 var settings = data.settings; | |
| 284 var oldpn = settings.pn; | |
| 716 | 285 if (pageNr == null) { |
| 286 pageNr = window.prompt("Goto page number", oldpn); | |
| 287 } | |
| 668 | 288 var pn = setNumValue(settings, "pn", pageNr); |
| 289 if (pn == null) return false; // nothing happened | |
| 290 if (pn < 1) { | |
| 291 alert("no such page (page number too low)"); | |
| 292 settings.pn = oldpn; | |
| 293 return false; | |
| 294 } | |
| 767 | 295 // TODO: how do we get pt? |
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296 if (settings.pt != null) { |
| 668 | 297 if (pn > settings.pt) { |
| 298 alert("no such page (page number too high)"); | |
| 623 | 299 settings.pn = oldpn; |
| 300 return false; | |
| 634 | 301 } |
| 668 | 302 } |
| 303 // reset mk and others(?) | |
| 304 data.marks = []; | |
| 927 | 305 data.zoomArea = FULL_AREA.copy(); |
| 668 | 306 // then reload |
| 307 redisplay(data); | |
| 308 }, | |
| 654 | 309 |
| 954 | 310 /** zoom by a given factor |
| 311 * | |
| 312 * @param data | |
| 313 * @param factor | |
| 314 */ | |
| 668 | 315 zoomBy : function (data, factor) { |
| 316 zoomBy(data, factor); | |
| 317 }, | |
| 647 | 318 |
| 954 | 319 /** zoom to area (or interactive) |
| 320 * | |
| 321 * @param data | |
| 322 * @param area | |
| 323 */ | |
| 767 | 324 zoomArea : function (data, area) { |
| 325 if (area == null) { | |
| 326 // interactively | |
| 327 zoomArea(data); | |
| 328 } else { | |
| 329 data.zoomArea = geom.rectangle(area); | |
| 330 redisplay(data); | |
| 331 } | |
| 668 | 332 }, |
| 650 | 333 |
| 954 | 334 /** zoom out to full page |
| 335 * | |
| 336 * @param data | |
| 337 * @param mode | |
| 338 */ | |
| 668 | 339 zoomFull : function (data, mode) { |
| 917 | 340 data.zoomArea = FULL_AREA.copy(); |
| 972 | 341 setFitMode(data, mode); |
| 342 // zoom full only works in screen mode | |
| 343 setScaleMode(data, 'screen'); | |
| 1010 | 344 data.settings.isBirdDivVisible = false; |
| 668 | 345 redisplay(data); |
| 346 }, | |
| 347 | |
| 954 | 348 /** mirror the image |
| 349 * | |
| 350 * @param data | |
| 351 * @param mode | |
| 352 */ | |
| 668 | 353 mirror : function (data, mode) { |
| 354 var flags = data.scalerFlags; | |
| 355 if (mode === 'h') { | |
| 356 if (flags.hmir) { | |
| 357 delete flags.hmir; | |
| 358 } else { | |
| 359 flags.hmir = 1; | |
| 360 } | |
| 361 } else { | |
| 362 if (flags.vmir) { | |
| 363 delete flags.vmir; | |
| 364 } else { | |
| 365 flags.vmir = 1; | |
| 366 } | |
| 367 } | |
| 368 redisplay(data); | |
| 369 }, | |
| 650 | 370 |
| 954 | 371 /** rotate the image |
| 372 * | |
| 373 * @param data | |
| 374 * @param angle | |
| 375 */ | |
| 668 | 376 rotate : function (data, angle) { |
| 377 var rot = data.settings.rot; | |
| 378 if (angle == null) { | |
| 379 angle = window.prompt("Rotation angle:", rot); | |
| 380 } | |
| 381 data.settings.rot = angle; | |
| 382 redisplay(data); | |
| 383 }, | |
| 384 | |
| 954 | 385 /** change brightness |
| 386 * | |
| 387 * @param data | |
| 388 * @param factor | |
| 389 */ | |
| 668 | 390 brightness : function (data, factor) { |
| 391 var brgt = data.settings.brgt; | |
| 392 if (factor == null) { | |
| 393 factor = window.prompt("Brightness (-255..255)", brgt); | |
| 394 } | |
| 395 data.settings.brgt = factor; | |
| 396 redisplay(data); | |
| 397 }, | |
| 398 | |
| 954 | 399 /** change contrast |
| 400 * | |
| 401 * @param data | |
| 402 * @param factor | |
| 403 */ | |
| 668 | 404 contrast : function (data, factor) { |
| 405 var cont = data.settings.cont; | |
| 406 if (factor == null) { | |
| 407 factor = window.prompt("Contrast (-8, 8)", cont); | |
| 408 } | |
| 409 data.settings.cont = factor; | |
| 410 redisplay(data); | |
| 688 | 411 }, |
| 710 | 412 |
| 954 | 413 /** reset image parameters to defaults |
| 414 * TODO: improve this! | |
| 415 * | |
| 416 * @param data | |
| 417 */ | |
| 688 | 418 reset : function (data) { |
| 419 var settings = data.settings; | |
| 420 var paramNames = settings.digilibParamNames; | |
| 421 var params = data.queryParams; | |
| 422 // delete all digilib parameters | |
| 423 for (var i = 0; i < paramNames.length; i++) { | |
| 424 var paramName = paramNames[i]; | |
| 425 delete settings[paramName]; | |
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426 } |
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427 settings.fn = params.fn || ''; // no default defined |
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428 settings.pn = params.pn || defaults.pn; |
| 986 | 429 var size = getFullscreenImgSize(data); |
| 430 settings.dw = params.dw || size.width; | |
| 431 settings.dh = params.dh || size.height; | |
| 709 | 432 settings.isBirdDivVisible = false; |
| 946 | 433 settings.visibleButtonSets = 1; // FIXME |
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434 // resets zoomArea, marks, scalerflags |
| 917 | 435 data.zoomArea = FULL_AREA.copy(); |
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436 data.marks = []; |
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437 data.scalerFlags = {}; |
| 712 | 438 delete data.dlOpts.fitwidth; |
| 439 delete data.dlOpts.fitheight; | |
| 986 | 440 data.scaleMode = 'screen'; |
| 688 | 441 redisplay(data); |
| 689 | 442 }, |
| 443 | |
| 954 | 444 /** presents a reference url (returns value if noprompt) |
| 445 * | |
| 446 * @param data | |
| 447 * @param noprompt | |
| 448 * @returns | |
| 449 */ | |
| 703 | 450 reference : function (data, noprompt) { |
| 744 | 451 var url = getDigilibUrl(data); |
| 703 | 452 if (noprompt == null) { |
| 453 window.prompt("URL reference to the current view", url); | |
| 1011 | 454 // return nothing so we can use is in javascript: url without reload |
| 455 return; | |
| 703 | 456 } |
| 457 return url; | |
| 458 }, | |
| 710 | 459 |
| 1011 | 460 /** |
| 461 * Returns URL to the full digilib.html with the current parameters. | |
| 462 * Redirects immediately with mode=open. | |
| 463 * | |
| 464 * @param data | |
| 465 * @param mode | |
| 466 */ | |
| 467 digilibUrl : function (data, mode) { | |
| 468 var url = getDigilibUrl(data, '/jquery/digilib.html'); | |
| 469 if (mode === 'open') { | |
| 470 // redirect | |
| 471 window.location = url; | |
| 472 } else if (mode === 'open_new') { | |
| 473 // open new window | |
| 474 window.open(url); | |
| 475 return; | |
| 476 } | |
| 477 return url; | |
| 478 }, | |
| 479 | |
| 480 | |
| 954 | 481 /** set image quality |
| 482 * | |
| 483 * @param data | |
| 484 * @param qual | |
| 485 */ | |
| 748 | 486 setQuality : function (data, qual) { |
| 703 | 487 var oldq = getQuality(data); |
| 488 if (qual == null) { | |
| 489 qual = window.prompt("Image quality (0..2)", oldq); | |
| 490 } | |
| 491 qual = parseInt(qual, 10); | |
| 492 if (qual >= 0 && qual <= 2) { | |
| 493 setQuality(data, qual); | |
| 494 redisplay(data); | |
| 495 } | |
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496 }, |
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497 |
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498 /** calibrate (set client screen dpi) |
| 954 | 499 * |
| 500 * @param data | |
| 501 * @param res | |
| 502 */ | |
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503 calibrate : function (data, res) { |
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504 var oldRes = data.settings.ddpi; |
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505 if (res == null) { |
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506 res = window.prompt("Display resolution (dpi)", oldRes); |
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507 } |
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508 if (res != null) { |
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509 data.settings.ddpi = res; |
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510 redisplay(data); |
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511 } |
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512 }, |
| 775 | 513 |
| 954 | 514 /** set image scale mode |
| 515 * | |
| 516 * @param data | |
| 517 * @param mode | |
| 518 */ | |
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519 setScaleMode : function (data, mode) { |
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520 var oldM = getScaleMode(data); |
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521 if (mode == null) { |
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522 mode = window.prompt("Image scale mode (screen, pixel, size)", oldM); |
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523 } |
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524 if (mode != null) { |
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525 setScaleMode(data, mode); |
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526 redisplay(data); |
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527 } |
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528 } |
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529 // end of actions |
| 605 | 530 }; |
| 604 | 531 |
| 954 | 532 /** return parameters from page url |
| 533 * | |
| 534 */ | |
| 607 | 535 var parseQueryParams = function() { |
| 636 | 536 return parseQueryString(window.location.search.slice(1)); |
| 537 }; | |
| 655 | 538 |
| 984 | 539 /** |
| 540 * returns parameters from embedded img-element | |
| 954 | 541 * |
| 542 */ | |
| 607 | 543 var parseImgParams = function($elem) { |
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544 var src = $elem.find('img').first().attr('src'); |
| 710 | 545 if (!src) return null; |
| 607 | 546 var pos = src.indexOf('?'); |
| 547 var query = (pos < 0) ? '' : src.substring(pos + 1); | |
| 548 var scalerUrl = src.substring(0, pos); | |
| 627 | 549 var params = parseQueryString(query); |
| 550 params.scalerBaseUrl = scalerUrl; | |
| 551 return params; | |
| 636 | 552 }; |
| 607 | 553 |
| 984 | 554 /** |
| 555 * parses query parameter string into parameter object | |
| 954 | 556 * |
| 557 */ | |
| 607 | 558 var parseQueryString = function(query) { |
| 701 | 559 var params = {}; |
| 560 if (query == null) return params; | |
| 607 | 561 var pairs = query.split("&"); |
| 636 | 562 //var keys = []; |
| 607 | 563 for (var i = 0; i < pairs.length; i++) { |
| 564 var pair = pairs[i].split("="); | |
| 565 if (pair.length === 2) { | |
| 627 | 566 params[pair[0]] = pair[1]; |
| 636 | 567 //keys.push(pair[0]); |
| 634 | 568 } |
| 636 | 569 } |
| 627 | 570 return params; |
| 636 | 571 }; |
| 668 | 572 |
| 984 | 573 /** |
| 574 * return a query string from key names from a parameter hash | |
| 954 | 575 * (ignores keys if the same value is in defaults) |
| 576 * | |
| 577 */ | |
| 643 | 578 var getParamString = function (settings, keys, defaults) { |
| 615 | 579 var paramString = ''; |
| 650 | 580 var nx = false; |
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581 for (var i = 0; i < keys.length; ++i) { |
| 615 | 582 var key = keys[i]; |
| 663 | 583 if ((settings[key] != null) && ((defaults == null) || (settings[key] != defaults[key]))) { |
| 615 | 584 // first param gets no '&' |
| 650 | 585 if (nx) { |
| 586 paramString += '&'; | |
| 587 } else { | |
| 588 nx = true; | |
| 589 } | |
| 615 | 590 // add parm=val |
| 591 paramString += key + '=' + settings[key]; | |
| 643 | 592 } |
| 615 | 593 } |
| 594 return paramString; | |
| 631 | 595 }; |
| 596 | |
| 984 | 597 /** |
| 598 * returns URL and query string for Scaler | |
| 954 | 599 */ |
| 636 | 600 var getScalerUrl = function (data) { |
| 741 | 601 packParams(data); |
| 653 | 602 var settings = data.settings; |
| 652 | 603 if (settings.scalerBaseUrl == null) { |
| 604 alert("ERROR: URL of digilib Scaler servlet missing!"); | |
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605 } |
| 636 | 606 var keys = settings.scalerParamNames; |
| 643 | 607 var queryString = getParamString(settings, keys, defaults); |
| 636 | 608 var url = settings.scalerBaseUrl + '?' + queryString; |
| 609 return url; | |
| 610 }; | |
| 611 | |
| 954 | 612 /** returns URL for preview background image |
| 613 * | |
| 614 */ | |
| 615 var getPreviewImgUrl = function (data, moreParams) { | |
| 741 | 616 var settings = data.settings; |
| 795 | 617 var bgOptions = { |
| 954 | 618 dw : settings.previewImgWidth, |
| 619 dh : settings.previewImgHeight | |
| 741 | 620 }; |
| 795 | 621 var bgSettings = $.extend({}, settings, bgOptions); |
| 931 | 622 // filter scaler flags (use only hmir and vmir) |
| 795 | 623 if (bgSettings.mo != null) { |
| 624 var mo = ''; | |
| 625 if (data.scalerFlags.hmir != null) { | |
| 626 mo += 'hmir,'; | |
| 767 | 627 } |
| 795 | 628 if (data.scalerFlags.vmir != null) { |
| 629 mo += 'vmir'; | |
| 630 } | |
| 631 bgSettings.mo = mo; | |
| 743 | 632 } |
| 954 | 633 var params = getParamString(bgSettings, settings.previewImgParamNames, defaults); |
| 743 | 634 var url = settings.scalerBaseUrl + '?' + params; |
| 741 | 635 return url; |
| 636 }; | |
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637 |
| 1011 | 638 /** |
| 639 * returns URL and query string for current digilib. | |
| 640 * if digilibPage != null returns URL to page in digilib installation with digilib parameters, | |
| 641 * otherwise using current URL and parameters. | |
| 954 | 642 * |
| 643 */ | |
| 1011 | 644 var getDigilibUrl = function (data, digilibPage) { |
| 643 | 645 packParams(data); |
| 636 | 646 var settings = data.settings; |
| 1011 | 647 var paramList = settings.digilibParamNames; |
| 648 if (digilibPage != null) { | |
| 649 var baseUrl = data.settings.digilibBaseUrl + digilibPage; | |
| 650 } else { | |
| 651 paramList = settings.additionalParamNames.concat(settings.digilibParamNames); | |
| 652 if (settings.suppressParamNames != null) { | |
| 653 // eliminate suppressed parameters from list | |
| 654 paramList = $.map(paramList, function(e, idx) { | |
| 655 if ($.inArray(e, settings.suppressParamNames) >= 0) { | |
| 656 return null; | |
| 657 } else { | |
| 658 return e; | |
| 659 } | |
| 660 }); | |
| 661 } | |
| 662 // take url from current location | |
| 663 var baseUrl = window.location.href; | |
| 664 var pos = baseUrl.indexOf('?'); | |
| 665 if (pos > -1) { | |
| 666 baseUrl = baseUrl.substring(0, pos); | |
| 667 } | |
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668 } |
| 1007 | 669 var queryString = getParamString(settings, paramList, defaults); |
| 1011 | 670 return baseUrl + '?' + queryString; |
| 636 | 671 }; |
| 672 | |
| 954 | 673 /** loads image information from digilib server via HTTP |
| 674 * | |
| 675 */ | |
| 797 | 676 var loadImageInfo = function (data) { |
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677 var settings = data.settings; |
| 917 | 678 // bind default function (only once) |
| 679 $(data).off('imageInfo', handleImageInfo); | |
| 680 $(data).on('imageInfo', handleImageInfo); | |
| 681 var url = settings.digilibBaseUrl + '/ImgInfo-json.jsp'; | |
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682 url += '?' + getParamString(settings, ['fn', 'pn'], defaults); |
| 767 | 683 // TODO: better error handling |
| 785 | 684 $.getJSON(url, function (json) { |
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685 console.debug("got json data=", json); |
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686 data.imgInfo = json; |
| 797 | 687 // send event |
| 688 $(data).trigger('imageInfo', [json]); | |
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689 }); |
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690 }; |
| 775 | 691 |
| 954 | 692 /** processes some parameters into objects and stuff |
| 693 * | |
| 694 */ | |
| 631 | 695 var unpackParams = function (data) { |
| 696 var settings = data.settings; | |
| 636 | 697 // zoom area |
| 631 | 698 var zoomArea = geom.rectangle(settings.wx, settings.wy, settings.ww, settings.wh); |
| 643 | 699 data.zoomArea = zoomArea; |
| 650 | 700 // mo (Scaler flags) |
| 701 var flags = {}; | |
| 702 if (settings.mo) { | |
| 703 var pa = settings.mo.split(","); | |
| 704 for (var i = 0; i < pa.length ; i++) { | |
| 705 flags[pa[i]] = pa[i]; | |
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706 } |
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707 } |
| 650 | 708 data.scalerFlags = flags; |
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709 data.scaleMode = getScaleMode(data); |
| 723 | 710 retrieveOptions(data); |
| 655 | 711 }; |
| 712 | |
| 954 | 713 /** put area into parameters |
| 714 * | |
| 715 */ | |
| 822 | 716 var packArea = function (settings, area) { |
| 717 if (!area) return; | |
| 718 // zoom area | |
| 719 settings.wx = cropFloat(area.x); | |
| 720 settings.wy = cropFloat(area.y); | |
| 721 settings.ww = cropFloat(area.width); | |
| 722 settings.wh = cropFloat(area.height); | |
| 723 }; | |
| 724 | |
| 954 | 725 /** pack scaler flags into parameters |
| 726 * | |
| 727 */ | |
| 822 | 728 var packScalerFlags = function (settings, flags) { |
| 729 if (!flags) return; | |
| 730 var mo = ''; | |
| 731 for (var f in flags) { | |
| 732 if (mo) { | |
| 733 mo += ','; | |
| 734 } | |
| 735 mo += f; | |
| 736 } | |
| 737 settings.mo = mo; | |
| 738 }; | |
| 739 | |
| 954 | 740 /** put objects back into parameters |
| 741 * | |
| 742 */ | |
| 631 | 743 var packParams = function (data) { |
| 744 var settings = data.settings; | |
| 822 | 745 packArea(settings, data.zoomArea); |
| 746 packScalerFlags(settings, data.scalerFlags); | |
| 747 // store user interface options in cookie | |
| 723 | 748 storeOptions(data); |
|
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749 // trigger pack handlers |
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750 $(data).trigger('pack'); |
| 709 | 751 }; |
| 688 | 752 |
| 954 | 753 /** store digilib options in a cookie |
| 754 * | |
| 755 */ | |
| 723 | 756 var storeOptions = function (data) { |
| 709 | 757 var settings = data.settings; |
| 758 if (data.dlOpts) { | |
| 759 // save digilib settings in options | |
| 760 data.dlOpts.birdview = settings.isBirdDivVisible ? 1 : 0; | |
| 761 data.dlOpts.buttons = settings.visibleButtonSets; | |
| 762 var clop = ''; | |
| 763 for (var o in data.dlOpts) { | |
| 764 if (clop) { | |
| 765 clop += '&'; | |
|
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766 } |
| 709 | 767 clop += o + '=' + data.dlOpts[o]; |
|
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|
768 } |
| 785 | 769 if ($.cookie) { |
| 709 | 770 var ck = "digilib:fn:" + escape(settings.fn) + ":pn:" + settings.pn; |
| 771 console.debug("set cookie=", ck, " value=", clop); | |
| 785 | 772 $.cookie(ck, clop); |
|
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773 } |
|
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|
774 } |
| 785 | 775 if (settings.interactionMode !== 'fullscreen' && $.cookie) { |
| 727 | 776 // store normal parameters in cookie for embedded mode |
| 777 var qs = getParamString(settings, settings.digilibParamNames, defaults); | |
| 778 var ck = "digilib-embed:fn:" + escape(settings.fn) + ":pn:" + settings.pn; | |
| 779 console.debug("set cookie=", ck, " value=", qs); | |
| 785 | 780 $.cookie(ck, qs); |
| 727 | 781 } |
| 631 | 782 }; |
| 655 | 783 |
| 983 | 784 /** retrieve digilib options from a cookie |
| 954 | 785 * |
| 786 */ | |
| 723 | 787 var retrieveOptions = function (data) { |
| 709 | 788 // clop (digilib options) |
| 789 var opts = {}; | |
| 790 var settings = data.settings; | |
| 785 | 791 if ($.cookie) { |
| 709 | 792 // read from cookie |
| 793 var ck = "digilib:fn:" + escape(settings.fn) + ":pn:" + settings.pn; | |
| 785 | 794 var cp = $.cookie(ck); |
| 709 | 795 console.debug("get cookie=", ck, " value=", cp); |
| 796 // in query string format | |
| 797 opts = parseQueryString(cp); | |
|
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798 } |
| 709 | 799 data.dlOpts = opts; |
| 800 // birdview option | |
| 801 if (opts.birdview != null) { | |
| 802 settings.isBirdDivVisible = opts.birdview === '1'; | |
|
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803 } |
| 709 | 804 // visible button sets |
| 805 if (opts.buttons != null) { | |
| 806 settings.visibleButtonSets = opts.buttons; | |
|
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|
807 } |
| 711 | 808 }; |
| 709 | 809 |
| 949 | 810 /** (re)load the image with the current settings. |
| 811 * | |
| 812 */ | |
|
644
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813 var redisplay = function (data) { |
| 636 | 814 var settings = data.settings; |
| 815 if (settings.interactionMode === 'fullscreen') { | |
| 816 // update location.href (browser URL) in fullscreen mode | |
|
644
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817 var url = getDigilibUrl(data); |
| 636 | 818 var history = window.history; |
| 942 | 819 if (data.hasAsyncReload) { |
|
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820 console.debug("faking reload to "+url); |
|
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|
821 // change url without reloading (stateObj, title, url) |
|
890
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|
822 // TODO: we really need to push the state in stateObj and listen to pop-events |
|
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823 try { |
|
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824 history.replaceState({}, '', url); |
| 931 | 825 // show busy cursor |
| 826 $('body').css('cursor', 'progress'); | |
| 934 | 827 data.$scaler.css('cursor', 'progress'); |
|
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828 // change img src |
| 949 | 829 var $img = data.$img; |
|
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830 var imgurl = getScalerUrl(data); |
| 949 | 831 $img.attr('src', imgurl); |
|
952
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|
832 // trigger load event if image is cached. Doesn't work with Firefox!! |
| 993 | 833 if (data.hasCachedComplete && $img.prop('complete')) { |
| 834 console.debug("cached img.load"); | |
| 835 $img.trigger('load'); | |
| 836 } | |
| 917 | 837 if (data.scalerFlags.clip != null || data.scalerFlags.osize != null) { |
| 838 // we need image info, do we have it? | |
| 839 if (data.imgInfo == null) { | |
| 840 loadImageInfo(data); | |
| 841 } | |
| 842 } | |
|
950
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843 // update if we have a preview |
|
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844 if (data.hasPreviewBg) { |
|
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|
845 $(data).trigger('update'); |
|
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|
846 } |
| 946 | 847 //FIXME: highlightButtons(data); |
|
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|
848 // send event |
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849 $(data).trigger('redisplay'); |
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850 } catch (e) { |
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851 console.error("replaceState("+url+") didn't work: "+e); |
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852 // reload window |
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853 window.location = url; |
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854 } |
|
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|
855 } else { |
|
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|
856 // reload window |
|
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857 window.location = url; |
|
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|
858 } |
| 636 | 859 } else { |
| 860 // embedded mode -- just change img src | |
| 931 | 861 // show busy cursor |
| 862 $('body').css('cursor', 'progress'); | |
| 934 | 863 data.$scaler.css('cursor', 'progress'); |
| 949 | 864 var $img = data.$img; |
| 636 | 865 var url = getScalerUrl(data); |
| 949 | 866 $img.attr('src', url); |
| 867 // trigger load event if image is cached | |
| 868 if ($img.prop('complete')) $img.trigger('load'); | |
| 917 | 869 if (data.scalerFlags.clip != null || data.scalerFlags.osize != null) { |
| 870 // we need image info, do we have it? | |
| 871 if (data.imgInfo == null) { | |
| 872 loadImageInfo(data); | |
| 873 } | |
| 874 } | |
| 949 | 875 //FIXME: highlightButtons(data); |
| 795 | 876 // send event |
| 877 $(data).trigger('redisplay'); | |
|
913
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|
878 } |
| 622 | 879 }; |
| 880 | |
| 949 | 881 /** update display (overlays etc.) |
| 882 * (just triggers "update" event) | |
| 883 */ | |
| 767 | 884 var updateDisplay = function (data) { |
| 947 | 885 // send event |
| 886 $(data).trigger('update'); | |
| 887 }; | |
| 888 | |
| 949 | 889 /** handle "update" display event. |
|
991
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|
890 * updates image transform, etc. |
| 949 | 891 */ |
| 947 | 892 var handleUpdate = function (evt) { |
| 893 var data = this; | |
| 767 | 894 updateImgTrafo(data); |
| 895 setupZoomDrag(data); | |
| 896 }; | |
| 974 | 897 |
| 984 | 898 /** |
| 899 * returns maximum size for scaler img in fullscreen mode. | |
| 949 | 900 */ |
| 778 | 901 var getFullscreenImgSize = function (data) { |
|
989
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902 //var mode = data.settings.interactionMode; |
| 662 | 903 var $win = $(window); |
| 904 var winH = $win.height(); | |
| 779 | 905 var winW = $win.width(); |
|
989
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|
906 // add all current insets |
|
991
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907 // accounting for left/right border, body margins and additional requirements |
|
989
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908 var insets = { 'x' : 0, 'y' : 0}; |
|
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909 for (var n in data.currentInsets) { |
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910 insets.x += data.currentInsets[n].x; |
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911 insets.y += data.currentInsets[n].y; |
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|
912 }; |
|
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|
913 var imgW = winW - insets.x; |
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|
914 var imgH = winH - insets.y; |
| 998 | 915 console.debug('getFullscreenImgSize - screen w/h:', winW, winH, 'window.width', $win.width(), 'img w/h:', imgW, imgH); |
|
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|
916 return geom.size(imgW, imgH); |
| 662 | 917 }; |
| 918 | |
| 984 | 919 /** |
| 920 * returns a rectangle.with the fullscreen dimensions | |
| 974 | 921 */ |
| 922 var getFullscreenRect = function (data) { | |
| 923 return geom.rectangle(getFullscreenImgSize(data)); | |
| 924 }; | |
| 925 | |
| 984 | 926 /** |
| 927 * creates HTML structure for digilib in elem | |
| 949 | 928 */ |
| 627 | 929 var setupScalerDiv = function (data) { |
| 930 var settings = data.settings; | |
| 647 | 931 var $elem = data.$elem; |
| 996 | 932 var cssPrefix = settings.cssPrefix; |
| 933 $elem.addClass(cssPrefix+'digilib'); | |
| 728 | 934 var $img; |
| 935 var scalerUrl; | |
| 608 | 936 if (settings.interactionMode === 'fullscreen') { |
| 728 | 937 // fullscreen |
| 995 | 938 $elem.addClass(cssPrefix+'fullscreen'); |
| 778 | 939 var imgSize = getFullscreenImgSize(data); |
| 1012 | 940 data.maxImgSize = imgSize; |
| 650 | 941 // fitwidth/height omits destination height/width |
| 728 | 942 if (data.dlOpts.fitheight == null) { |
| 650 | 943 settings.dw = imgSize.width; |
|
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|
944 } |
| 728 | 945 if (data.dlOpts.fitwidth == null) { |
| 650 | 946 settings.dh = imgSize.height; |
|
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|
947 } |
| 686 | 948 scalerUrl = getScalerUrl(data); |
| 728 | 949 $img = $('<img/>'); |
| 609 | 950 } else { |
| 728 | 951 // embedded mode -- try to keep img tag |
| 995 | 952 $elem.addClass(cssPrefix+'embedded'); |
| 728 | 953 scalerUrl = getScalerUrl(data); |
| 623 | 954 $img = $elem.find('img'); |
|
613
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|
955 if ($img.length > 0) { |
|
870
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|
956 var oldUrl = $img.attr('src'); |
|
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|
957 // keep img attributes from html |
|
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|
958 var title = $img.attr('title'); |
|
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|
959 var alt = $img.attr('alt'); |
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960 if (oldUrl === scalerUrl) { |
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|
961 console.debug("img detach:", $img); |
|
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changeset
|
962 $img.detach(); |
|
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|
963 } else { |
|
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|
964 $img = $('<img/>'); |
|
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|
965 $img.attr("title", title); |
|
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|
966 $img.attr("alt", alt); |
| 728 | 967 } |
|
613
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|
968 } else { |
|
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|
969 $img = $('<img/>'); |
|
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|
970 } |
| 608 | 971 } |
| 822 | 972 // create new inner html, keeping buttons and content marked with "keep" class |
| 996 | 973 $elem.contents(':not(.'+cssPrefix+'keep)').remove(); |
| 995 | 974 var $scaler = $('<div class="'+cssPrefix+'scaler"/>'); |
| 779 | 975 // scaler should be the first child element? |
| 976 $elem.prepend($scaler); | |
|
613
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|
977 $scaler.append($img); |
| 995 | 978 $img.addClass(cssPrefix+'pic'); |
| 649 | 979 data.$scaler = $scaler; |
| 636 | 980 data.$img = $img; |
| 947 | 981 // set busy cursor |
| 982 $('body').css('cursor','progress'); | |
| 983 data.$scaler.css('cursor', 'progress'); | |
| 942 | 984 // set up image load handler before setting the src attribute (IE bug) |
| 687 | 985 $img.load(scalerImgLoadedHandler(data)); |
| 767 | 986 $img.error(function () {console.error("error loading scaler image");}); |
| 687 | 987 $img.attr('src', scalerUrl); |
| 608 | 988 }; |
| 615 | 989 |
| 949 | 990 /** creates HTML structure for the about view in elem |
| 991 * | |
| 992 */ | |
|
628
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|
993 var setupAboutDiv = function (data) { |
| 647 | 994 var $elem = data.$elem; |
|
628
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|
995 var settings = data.settings; |
| 996 | 996 var $aboutDiv = $('<div class="'+settings.cssPrefix+'about" style="display:none"/>'); |
|
886
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|
997 var $header = $('<p>Digilib Image Viewer</p>'); |
| 616 | 998 var $link = $('<a/>'); |
| 996 | 999 var $logo = $('<img class="'+settings.cssPrefix+'logo" title="digilib"/>'); |
| 616 | 1000 var $content = $('<p/>'); |
| 1001 $elem.append($aboutDiv); | |
| 1002 $aboutDiv.append($header); | |
| 1003 $aboutDiv.append($link); | |
| 1004 $aboutDiv.append($content); | |
| 1005 $link.append($logo); | |
|
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|
1006 logoUrl = settings.logoUrl; |
|
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|
1007 // make relative logoUrl absolute |
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1008 if (logoUrl.charAt(0) !== '/' && logoUrl.substring(0,3) !== 'http') { |
|
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1009 logoUrl = settings.digilibBaseUrl + '/' + logoUrl; |
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1010 } |
|
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|
1011 $logo.attr('src', logoUrl); |
| 635 | 1012 $link.attr('href', settings.homeUrl); |
| 616 | 1013 $content.text('Version: ' + settings.version); |
| 775 | 1014 data.$aboutDiv = $aboutDiv; |
| 635 | 1015 // click hides |
| 917 | 1016 $aboutDiv.on('click.digilib', function () { |
| 775 | 1017 actions['showAboutDiv'](data, false); |
| 710 | 1018 }); |
| 634 | 1019 }; |
| 1020 | |
| 949 | 1021 /** shows some window e.g. 'about' (toggle visibility if show is null) |
| 1022 * | |
| 1023 */ | |
| 635 | 1024 var showDiv = function (isVisible, $div, show) { |
| 645 | 1025 if (show == null) { |
| 635 | 1026 // toggle visibility |
| 1027 isVisible = !isVisible; | |
| 1028 } else { | |
| 1029 // set visibility | |
| 1030 isVisible = show; | |
|
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|
1031 } |
| 635 | 1032 if (isVisible) { |
| 1033 $div.fadeIn(); | |
| 1034 } else { | |
| 1035 $div.fadeOut(); | |
|
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|
1036 } |
| 635 | 1037 return isVisible; |
| 634 | 1038 }; |
| 616 | 1039 |
| 949 | 1040 /** Create Transform from zoom area and image size and parameters. |
| 1041 * Returns Transform between normalized coordinates and image pixel coordinates. | |
| 1042 */ | |
|
772
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original size mode works with zoom area now. needs error handling.
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changeset
|
1043 var getImgTrafo = function ($img, area, rot, hmir, vmir, mode, data) { |
|
658
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split bird's view code in two more parts, analog to scaler-img code.
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|
1044 var picrect = geom.rectangle($img); |
| 949 | 1045 // handle pixel-by-pixel and original-size modes |
|
763
31664707999e
pixel-by-pixel scale mode works with zoom area. (not in all cases)
robcast
parents:
761
diff
changeset
|
1046 if (mode != null) { |
|
772
33b5477f8d84
original size mode works with zoom area now. needs error handling.
robcast
parents:
769
diff
changeset
|
1047 var imgInfo = data.imgInfo; |
|
763
31664707999e
pixel-by-pixel scale mode works with zoom area. (not in all cases)
robcast
parents:
761
diff
changeset
|
1048 if (mode === 'pixel') { |
|
31664707999e
pixel-by-pixel scale mode works with zoom area. (not in all cases)
robcast
parents:
761
diff
changeset
|
1049 // 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
|
1050 if (imgInfo != null) { |
|
31664707999e
pixel-by-pixel scale mode works with zoom area. (not in all cases)
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parents:
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diff
changeset
|
1051 area.width = picrect.width / imgInfo.width; |
|
31664707999e
pixel-by-pixel scale mode works with zoom area. (not in all cases)
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parents:
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diff
changeset
|
1052 area.height = picrect.height / imgInfo.height; |
|
31664707999e
pixel-by-pixel scale mode works with zoom area. (not in all cases)
robcast
parents:
761
diff
changeset
|
1053 } else { |
|
31664707999e
pixel-by-pixel scale mode works with zoom area. (not in all cases)
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parents:
761
diff
changeset
|
1054 console.error("No image info for pixel mode!"); |
|
31664707999e
pixel-by-pixel scale mode works with zoom area. (not in all cases)
robcast
parents:
761
diff
changeset
|
1055 } |
|
31664707999e
pixel-by-pixel scale mode works with zoom area. (not in all cases)
robcast
parents:
761
diff
changeset
|
1056 } |
|
772
33b5477f8d84
original size mode works with zoom area now. needs error handling.
robcast
parents:
769
diff
changeset
|
1057 if (mode === 'size') { |
|
33b5477f8d84
original size mode works with zoom area now. needs error handling.
robcast
parents:
769
diff
changeset
|
1058 // 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
parents:
769
diff
changeset
|
1059 if (imgInfo != null) { |
|
33b5477f8d84
original size mode works with zoom area now. needs error handling.
robcast
parents:
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diff
changeset
|
1060 var ddpi = parseFloat(data.settings.ddpi); |
|
33b5477f8d84
original size mode works with zoom area now. needs error handling.
robcast
parents:
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diff
changeset
|
1061 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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parents:
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diff
changeset
|
1062 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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parents:
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diff
changeset
|
1063 } else { |
|
33b5477f8d84
original size mode works with zoom area now. needs error handling.
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diff
changeset
|
1064 console.error("No image info for original size mode!"); |
|
33b5477f8d84
original size mode works with zoom area now. needs error handling.
robcast
parents:
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diff
changeset
|
1065 } |
|
33b5477f8d84
original size mode works with zoom area now. needs error handling.
robcast
parents:
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diff
changeset
|
1066 } |
|
763
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pixel-by-pixel scale mode works with zoom area. (not in all cases)
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diff
changeset
|
1067 } |
|
658
9ddcf0070122
split bird's view code in two more parts, analog to scaler-img code.
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656
diff
changeset
|
1068 var trafo = geom.transform(); |
| 675 | 1069 // move zoom area offset to center |
|
658
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diff
changeset
|
1070 trafo.concat(trafo.getTranslation(geom.position(-area.x, -area.y))); |
| 675 | 1071 // 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.
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diff
changeset
|
1072 trafo.concat(trafo.getScale(geom.size(1/area.width, 1/area.height))); |
| 675 | 1073 // rotate and mirror (around transformed image center i.e. [0.5,0.5]) |
| 1074 if (rot || hmir || vmir) { | |
| 1075 // move [0.5,0.5] to center | |
| 1076 trafo.concat(trafo.getTranslation(geom.position(-0.5, -0.5))); | |
| 1077 if (hmir) { | |
| 1078 // mirror about center | |
| 1079 trafo.concat(trafo.getMirror('y')); | |
|
713
c1fa722c570e
more cosmetics: added options to validate with http://www.jslint.com
robcast
parents:
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diff
changeset
|
1080 } |
| 675 | 1081 if (vmir) { |
| 1082 // mirror about center | |
| 1083 trafo.concat(trafo.getMirror('x')); | |
|
713
c1fa722c570e
more cosmetics: added options to validate with http://www.jslint.com
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diff
changeset
|
1084 } |
| 675 | 1085 if (rot) { |
| 1086 // rotate around center | |
| 1087 trafo.concat(trafo.getRotation(parseFloat(rot))); | |
|
713
c1fa722c570e
more cosmetics: added options to validate with http://www.jslint.com
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diff
changeset
|
1088 } |
| 675 | 1089 // move back |
| 1090 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
|
1091 } |
|
664
d5a5ee4cbf04
work on getting transformation to work with rotation (currently still doesn't)
robcast
parents:
663
diff
changeset
|
1092 // 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
|
1093 trafo.concat(trafo.getScale(picrect)); |
|
9ddcf0070122
split bird's view code in two more parts, analog to scaler-img code.
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parents:
656
diff
changeset
|
1094 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
|
1095 return trafo; |
| 655 | 1096 }; |
|
678
d50d24b7fd95
first step at dragging birdview zoom indicator around
hertzhaft
parents:
677
diff
changeset
|
1097 |
| 949 | 1098 /** update current scaler image transform |
| 1099 */ | |
| 767 | 1100 var updateImgTrafo = function (data) { |
| 1101 var $img = data.$img; | |
| 895 | 1102 if ($img == null) |
| 1103 return; | |
| 1104 var imgLoaded = $.browser.msie | |
| 949 | 1105 ? $img.prop('width') > 0 |
| 1106 : $img.prop('complete'); | |
|
950
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
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parents:
949
diff
changeset
|
1107 if (imgLoaded || data.hasPreviewBg) { |
| 949 | 1108 // create Transform from current zoomArea and image size |
| 1109 data.imgTrafo = getImgTrafo($img, data.zoomArea, data.settings.rot, | |
| 1110 data.scalerFlags.hmir, data.scalerFlags.vmir, | |
| 1111 data.scaleMode, data); | |
| 1012 | 1112 console.debug("updateImgTrafo: ", data.imgTrafo); |
| 949 | 1113 } |
| 767 | 1114 }; |
| 775 | 1115 |
| 949 | 1116 /** return handler for load event of scaler img |
| 1117 * (necessary for closure with data object) | |
| 1118 */ | |
| 767 | 1119 var scalerImgLoadedHandler = function (data) { |
| 1120 return function () { | |
| 1121 var $img = $(this); | |
| 1122 console.debug("scaler img loaded=",$img); | |
| 1123 var $scaler = data.$scaler; | |
|
760
f0be4432f515
primitive plugin extension mechanism - unsure how useful this is
hertzhaft
parents:
755
diff
changeset
|
1124 var imgRect = geom.rectangle($img); |
| 931 | 1125 data.imgRect = imgRect; |
| 934 | 1126 // reset busy cursor |
| 1127 $('body').css('cursor', 'auto'); | |
| 1128 $scaler.css('cursor', 'auto'); | |
| 957 | 1129 // adjust scaler div size (beware: setting position makes the element relative) |
| 1130 imgRect.getSize().adjustDiv($scaler); | |
| 715 | 1131 // show image in case it was hidden (for example in zoomDrag) |
| 733 | 1132 $img.css('visibility', 'visible'); |
|
952
e3dc84cbb766
disable forced load event causing problem with firefox.
robcast
parents:
951
diff
changeset
|
1133 $scaler.css({'opacity' : '1', 'background' : 'transparent'}); |
|
950
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
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parents:
949
diff
changeset
|
1134 data.hasPreviewBg = false; |
| 767 | 1135 // update display (render marks, etc.) |
| 1136 updateDisplay(data); | |
|
658
9ddcf0070122
split bird's view code in two more parts, analog to scaler-img code.
robcast
parents:
656
diff
changeset
|
1137 }; |
|
9ddcf0070122
split bird's view code in two more parts, analog to scaler-img code.
robcast
parents:
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diff
changeset
|
1138 }; |
|
9ddcf0070122
split bird's view code in two more parts, analog to scaler-img code.
robcast
parents:
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diff
changeset
|
1139 |
| 949 | 1140 /** handle imageInfo loaded event |
| 1141 * | |
| 1142 */ | |
| 797 | 1143 var handleImageInfo = function (evt, json) { |
| 917 | 1144 console.debug("handleImageInfo:", json); |
| 797 | 1145 var data = this; |
| 1146 updateDisplay(data); | |
| 1147 }; | |
| 813 | 1148 |
| 949 | 1149 /** handle changeZoomArea event |
| 1150 * | |
| 1151 */ | |
| 942 | 1152 var handleChangeZoomArea = function (evt, newZa) { |
| 1153 console.debug("handleChangeZoomArea:", newZa); | |
| 1154 var data = this; | |
| 995 | 1155 // hide all overlays (marks/regions) |
| 996 | 1156 data.$elem.find('.'+data.settings.cssPrefix+'overlay').hide(); |
|
950
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much nicer implementation of preview for scrolling and zooming.
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parents:
949
diff
changeset
|
1157 setPreviewBg(data, newZa); |
| 942 | 1158 }; |
| 1159 | |
| 1160 | |
| 949 | 1161 /** zoom by the given factor. |
| 1162 * | |
| 1163 */ | |
| 643 | 1164 var zoomBy = function(data, factor) { |
| 1165 var area = data.zoomArea; | |
| 1166 var newarea = area.copy(); | |
| 1167 // scale | |
| 1168 newarea.width /= factor; | |
| 1169 newarea.height /= factor; | |
| 1170 // and recenter | |
| 1171 newarea.x -= 0.5 * (newarea.width - area.width); | |
| 1172 newarea.y -= 0.5 * (newarea.height - area.height); | |
|
735
790a7673bef0
improved some embedded buttons; fixed reset function
hertzhaft
parents:
733
diff
changeset
|
1173 newarea = FULL_AREA.fit(newarea); |
|
950
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1174 setZoomArea(data, newarea); |
| 972 | 1175 // reset modes |
| 1176 setScaleMode(data, 'screen'); | |
| 1177 setFitMode(data, 'both'); | |
|
644
ee8ccd84c5f8
reload doesn't take list of changed parameters any more
robcast
parents:
643
diff
changeset
|
1178 redisplay(data); |
| 643 | 1179 }; |
| 1180 | |
| 949 | 1181 /** zoom to the area around two clicked points. |
| 1182 * | |
| 1183 */ | |
| 654 | 1184 var zoomArea = function(data) { |
| 1185 $elem = data.$elem; | |
| 1186 $scaler = data.$scaler; | |
| 1187 var pt1, pt2; | |
| 996 | 1188 var $zoomDiv = $('<div class="'+data.settings.cssPrefix+'zoomrect" style="display:none"/>'); |
| 654 | 1189 $elem.append($zoomDiv); |
| 775 | 1190 // $zoomDiv.css(data.settings.zoomrectStyle); |
| 654 | 1191 var picRect = geom.rectangle($scaler); |
| 1192 // FIX ME: is there a way to query the border width from CSS info? | |
| 1193 // rect.x -= 2; // account for overlay borders | |
| 1194 // rect.y -= 2; | |
| 1195 | |
| 1196 var zoomStart = function (evt) { | |
| 1197 pt1 = geom.position(evt); | |
| 1198 // setup and show zoom div | |
| 738 | 1199 pt1.adjustDiv($zoomDiv); |
| 668 | 1200 $zoomDiv.width(0).height(0); |
| 654 | 1201 $zoomDiv.show(); |
| 1202 // register events | |
| 917 | 1203 $elem.on("mousemove.dlZoomArea", zoomMove); |
| 1204 $elem.on("mouseup.dlZoomArea", zoomEnd); | |
| 654 | 1205 return false; |
| 1206 }; | |
| 668 | 1207 |
| 741 | 1208 // mouse move handler |
| 1209 var zoomMove = function (evt) { | |
| 1210 pt2 = geom.position(evt); | |
| 1211 var rect = geom.rectangle(pt1, pt2); | |
| 1212 rect.clipTo(picRect); | |
| 1213 // update zoom div | |
| 1214 rect.adjustDiv($zoomDiv); | |
| 1215 return false; | |
| 1216 }; | |
|
745
ad483c008159
move birdview zoom indicator along with zoom drag
hertzhaft
parents:
744
diff
changeset
|
1217 |
| 654 | 1218 // mouseup handler: end moving |
| 1219 var zoomEnd = function (evt) { | |
| 1220 pt2 = geom.position(evt); | |
| 1221 // assume a click and continue if the area is too small | |
| 1222 var clickRect = geom.rectangle(pt1, pt2); | |
| 710 | 1223 if (clickRect.getArea() <= 5) return false; |
| 654 | 1224 // hide zoom div |
| 1225 $zoomDiv.remove(); | |
| 1226 // unregister events | |
| 917 | 1227 $elem.off("mousemove.dlZoomArea", zoomMove); |
| 1228 $elem.off("mouseup.dlZoomArea", zoomEnd); | |
| 654 | 1229 // clip and transform |
| 1230 clickRect.clipTo(picRect); | |
| 1231 var area = data.imgTrafo.invtransform(clickRect); | |
|
951
9c699b6cfcca
preview for ZoomArea. shows distortions when changing aspect ratio.
robcast
parents:
950
diff
changeset
|
1232 setZoomArea(data, area); |
| 972 | 1233 // reset modes |
| 1234 setFitMode(data, 'both'); | |
| 1235 setScaleMode(data, 'screen'); | |
| 654 | 1236 redisplay(data); |
| 1237 return false; | |
| 1238 }; | |
| 668 | 1239 |
|
742
2b6d3ef57d68
fixed problem with setmark, zoomarea and zoomDrag handlers.
robcast
parents:
741
diff
changeset
|
1240 // clear old handler (also ZoomDrag) |
| 917 | 1241 $scaler.off('.dlZoomArea'); |
| 1242 $scaler.off(".dlZoomDrag"); | |
| 1243 $elem.off('.dlZoomArea'); | |
| 654 | 1244 // bind start zoom handler |
| 738 | 1245 $scaler.one('mousedown.dlZoomArea', zoomStart); |
| 654 | 1246 }; |
| 647 | 1247 |
|
950
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1248 /** set preview background. |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1249 * optional newZoomArea scales and moves background to preview. |
| 949 | 1250 */ |
|
950
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1251 var setPreviewBg = function(data, newZoomArea) { |
|
746
2e9a48dc7a0c
move zoom-drag background along with birdview indicator
hertzhaft
parents:
745
diff
changeset
|
1252 var $scaler = data.$scaler; |
|
2e9a48dc7a0c
move zoom-drag background along with birdview indicator
hertzhaft
parents:
745
diff
changeset
|
1253 var $img = data.$img; |
|
950
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1254 var imgTrafo = data.imgTrafo; |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1255 var scalerPos = geom.position($scaler); |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1256 var bgRect = null; |
|
746
2e9a48dc7a0c
move zoom-drag background along with birdview indicator
hertzhaft
parents:
745
diff
changeset
|
1257 // hide the scaler img, show background of div instead |
|
2e9a48dc7a0c
move zoom-drag background along with birdview indicator
hertzhaft
parents:
745
diff
changeset
|
1258 $img.css('visibility', 'hidden'); |
|
918
f7869186ccb2
use current size background as well as scaled full-size background when dragging
robcast
parents:
917
diff
changeset
|
1259 // use current image as first background |
|
746
2e9a48dc7a0c
move zoom-drag background along with birdview indicator
hertzhaft
parents:
745
diff
changeset
|
1260 var scalerCss = { |
|
950
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1261 'background-image' : 'url(' + $img.attr('src') + ')', |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1262 'background-repeat' : 'no-repeat', |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1263 'background-position' : '0px 0px', |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1264 'opacity' : '0.7', |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1265 'cursor' : 'move' |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1266 }; |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1267 if (newZoomArea != null) { |
|
953
3d5e7458f9ae
fixed birdseye region positioning after layout reflow.
robcast
parents:
952
diff
changeset
|
1268 // check if aspect ratio has changed |
| 1012 | 1269 newAspect = newZoomArea.getAspect(); |
| 1270 if (newAspect !== data.zoomArea.getAspect()) { | |
| 1271 var newSize = data.maxImgSize.fitAspect(newAspect); | |
| 1272 // set scaler to presumed new size | |
| 1273 newSize.adjustDiv($scaler); | |
| 1274 console.debug("adjusting aspect ratio for preview", data.maxImgSize, newSize); | |
|
953
3d5e7458f9ae
fixed birdseye region positioning after layout reflow.
robcast
parents:
952
diff
changeset
|
1275 } |
| 976 | 1276 // get transform for new zoomArea (use 'screen' instead of data.scaleMode) |
| 1012 | 1277 imgTrafo = getImgTrafo($scaler, newZoomArea, data.settings.rot, |
|
950
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1278 data.scalerFlags.hmir, data.scalerFlags.vmir, |
| 976 | 1279 'screen', data); |
|
950
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1280 // 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
|
1281 bgRect = imgTrafo.transform(data.zoomArea); |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1282 // correct offset because background is relative |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1283 bgRect.addPosition(scalerPos.neg()); |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1284 // position background |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1285 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
|
1286 } |
|
746
2e9a48dc7a0c
move zoom-drag background along with birdview indicator
hertzhaft
parents:
745
diff
changeset
|
1287 if (data.hasBgSize) { |
|
950
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1288 // scale background using CSS3-background-size |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1289 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
|
1290 scalerCss[data.bgSizeName] = Math.round(bgRect.width) + 'px ' + Math.round(bgRect.height) + 'px'; |
| 944 | 1291 } else { |
| 1292 scalerCss[data.bgSizeName] = 'auto'; | |
| 1293 } | |
|
950
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1294 // additional full-size background using CSS3 |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1295 fullRect = imgTrafo.transform(FULL_AREA); |
|
746
2e9a48dc7a0c
move zoom-drag background along with birdview indicator
hertzhaft
parents:
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changeset
|
1296 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
|
1297 // correct offset because background is relative |
|
751
00b7857f07f5
zoom-drag background follows birdZoom also in embedded mode (still imprecise)
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748
diff
changeset
|
1298 fullRect.addPosition(scalerPos.neg()); |
| 954 | 1299 var url = getPreviewImgUrl(data); |
|
950
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much nicer implementation of preview for scrolling and zooming.
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parents:
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diff
changeset
|
1300 // add second background url, size and position |
|
918
f7869186ccb2
use current size background as well as scaled full-size background when dragging
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917
diff
changeset
|
1301 scalerCss['background-image'] += ', url(' + url + ')'; |
|
950
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much nicer implementation of preview for scrolling and zooming.
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diff
changeset
|
1302 scalerCss[data.bgSizeName] += ', ' + Math.round(fullRect.width) + 'px ' + Math.round(fullRect.height) + 'px'; |
|
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much nicer implementation of preview for scrolling and zooming.
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parents:
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diff
changeset
|
1303 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
|
1304 } |
|
918
f7869186ccb2
use current size background as well as scaled full-size background when dragging
robcast
parents:
917
diff
changeset
|
1305 } |
|
f7869186ccb2
use current size background as well as scaled full-size background when dragging
robcast
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diff
changeset
|
1306 $scaler.css(scalerCss); |
| 942 | 1307 data.hasPreviewBg = true; |
|
929
e881ab1c2f47
first step to "preview" like zoom-drag for more operations
robcast
parents:
928
diff
changeset
|
1308 }; |
|
e881ab1c2f47
first step to "preview" like zoom-drag for more operations
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928
diff
changeset
|
1309 |
| 949 | 1310 /** setup handlers for dragging the zoomed image. |
| 1311 * | |
| 1312 */ | |
| 705 | 1313 var setupZoomDrag = function(data) { |
| 942 | 1314 var startPos, delta; |
| 733 | 1315 var $document = $(document); |
| 795 | 1316 var $data = $(data); |
| 705 | 1317 var $elem = data.$elem; |
| 1318 var $scaler = data.$scaler; | |
| 1319 var $img = data.$img; | |
| 710 | 1320 |
| 733 | 1321 // drag the image and load a new detail on mouse up |
| 705 | 1322 var dragStart = function (evt) { |
| 944 | 1323 // cancel if not left-click |
| 1324 if (evt.which != 1) return; | |
| 813 | 1325 console.debug("dragstart at=", evt); |
|
737
7c93bdbb5153
setup zoomdrag even when image is not initially zoomed
hertzhaft
parents:
736
diff
changeset
|
1326 // don't start dragging if not zoomed |
|
7c93bdbb5153
setup zoomdrag even when image is not initially zoomed
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736
diff
changeset
|
1327 if (isFullArea(data.zoomArea)) return false; |
| 813 | 1328 $elem.find(".overlay").hide(); // hide all overlays (marks/regions) |
| 733 | 1329 startPos = geom.position(evt); |
| 741 | 1330 delta = null; |
|
746
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move zoom-drag background along with birdview indicator
hertzhaft
parents:
745
diff
changeset
|
1331 // set low res background immediately on mousedown |
|
950
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
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949
diff
changeset
|
1332 setPreviewBg(data); |
| 917 | 1333 $document.on("mousemove.dlZoomDrag", dragMove); |
| 1334 $document.on("mouseup.dlZoomDrag", dragEnd); | |
|
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more cosmetics: added options to validate with http://www.jslint.com
robcast
parents:
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diff
changeset
|
1335 return false; |
| 705 | 1336 }; |
|
745
ad483c008159
move birdview zoom indicator along with zoom drag
hertzhaft
parents:
744
diff
changeset
|
1337 |
| 733 | 1338 // mousemove handler: drag zoomed image |
| 705 | 1339 var dragMove = function (evt) { |
| 1340 var pos = geom.position(evt); | |
| 741 | 1341 delta = startPos.delta(pos); |
|
807
1b1728926534
geometry: overlapsRect() plus some comment clarifications
hertzhaft
parents:
799
diff
changeset
|
1342 // send message event with current zoom position |
|
745
ad483c008159
move birdview zoom indicator along with zoom drag
hertzhaft
parents:
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diff
changeset
|
1343 var za = geom.rectangle($img); |
|
ad483c008159
move birdview zoom indicator along with zoom drag
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diff
changeset
|
1344 za.addPosition(delta.neg()); |
| 947 | 1345 // transform back |
| 1346 var newArea = data.imgTrafo.invtransform(za); | |
| 1347 $data.trigger('changeZoomArea', newArea); | |
| 705 | 1348 return false; |
| 1349 }; | |
| 710 | 1350 |
| 733 | 1351 // mouseup handler: reload zoomed image in new position |
| 705 | 1352 var dragEnd = function (evt) { |
| 739 | 1353 $scaler.css('cursor', 'auto'); |
| 917 | 1354 $document.off("mousemove.dlZoomDrag", dragMove); |
| 1355 $document.off("mouseup.dlZoomDrag", dragEnd); | |
| 733 | 1356 if (delta == null || delta.distance() < 2) { |
| 1357 // no movement | |
| 1358 $img.css('visibility', 'visible'); | |
| 741 | 1359 $scaler.css({'opacity' : '1', 'background-image' : 'none'}); |
| 944 | 1360 data.hasPreviewBg = false; |
| 993 | 1361 // unhide marks etc. |
| 1362 updateDisplay(data); | |
| 733 | 1363 return false; |
| 1364 } | |
| 1365 // get old zoom area (screen coordinates) | |
| 741 | 1366 var za = geom.rectangle($img); |
| 733 | 1367 // move |
| 741 | 1368 za.addPosition(delta.neg()); |
| 733 | 1369 // transform back |
| 1370 var newArea = data.imgTrafo.invtransform(za); | |
|
735
790a7673bef0
improved some embedded buttons; fixed reset function
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parents:
733
diff
changeset
|
1371 data.zoomArea = FULL_AREA.fit(newArea); |
|
708
120ace160386
img reload works for fullscreen, but somehow not precise
hertzhaft
parents:
707
diff
changeset
|
1372 redisplay(data); |
| 705 | 1373 return false; |
| 1374 }; | |
|
735
790a7673bef0
improved some embedded buttons; fixed reset function
hertzhaft
parents:
733
diff
changeset
|
1375 |
| 733 | 1376 // clear old handler |
| 917 | 1377 $document.off(".dlZoomDrag"); |
| 1378 $scaler.off(".dlZoomDrag"); | |
|
742
2b6d3ef57d68
fixed problem with setmark, zoomarea and zoomDrag handlers.
robcast
parents:
741
diff
changeset
|
1379 if (! isFullArea(data.zoomArea)) { |
|
2b6d3ef57d68
fixed problem with setmark, zoomarea and zoomDrag handlers.
robcast
parents:
741
diff
changeset
|
1380 // set handler |
| 917 | 1381 $scaler.on("mousedown.dlZoomDrag", dragStart); |
|
742
2b6d3ef57d68
fixed problem with setmark, zoomarea and zoomDrag handlers.
robcast
parents:
741
diff
changeset
|
1382 } |
| 705 | 1383 }; |
| 1384 | |
|
950
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
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diff
changeset
|
1385 /** set the zoom area. |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
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949
diff
changeset
|
1386 * also triggers "changeZoomArea" event. |
|
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much nicer implementation of preview for scrolling and zooming.
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parents:
949
diff
changeset
|
1387 */ |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
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949
diff
changeset
|
1388 var setZoomArea = function(data, za) { |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
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949
diff
changeset
|
1389 $(data).trigger('changeZoomArea', za); |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
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parents:
949
diff
changeset
|
1390 data.oldZoomArea = data.zoomArea; |
|
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much nicer implementation of preview for scrolling and zooming.
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parents:
949
diff
changeset
|
1391 data.zoomArea = za; |
|
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
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949
diff
changeset
|
1392 }; |
| 1012 | 1393 |
| 949 | 1394 /** get image quality as a number (0..2). |
| 1395 * | |
| 1396 */ | |
| 703 | 1397 var getQuality = function (data) { |
| 1398 var flags = data.scalerFlags; | |
| 1399 var q = flags.q2 || flags.q1 || 'q0'; // assume q0 as default | |
| 1400 return parseInt(q[1], 10); | |
| 706 | 1401 }; |
| 703 | 1402 |
| 949 | 1403 /** set image quality as a number (0..2). |
| 1404 * | |
| 1405 */ | |
| 703 | 1406 var setQuality = function (data, qual) { |
| 1407 var flags = data.scalerFlags; | |
| 1408 // clear flags | |
| 1409 for (var i = 0; i < 3; ++i) { | |
| 1410 delete flags['q'+i]; | |
|
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more cosmetics: added options to validate with http://www.jslint.com
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diff
changeset
|
1411 } |
| 703 | 1412 flags['q'+qual] = 'q'+qual; |
| 706 | 1413 }; |
| 710 | 1414 |
| 949 | 1415 /** get image scale mode (screen, pixel, size). |
| 1416 * | |
| 1417 */ | |
|
761
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1418 var getScaleMode = function (data) { |
|
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1419 if (data.scalerFlags.clip != null) { |
|
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1420 return 'pixel'; |
|
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1421 } else if (data.scalerFlags.osize != null) { |
|
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1422 return 'size'; |
|
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1423 } |
|
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1424 // mo=fit is default |
|
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1425 return 'screen'; |
|
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1426 }; |
| 775 | 1427 |
| 949 | 1428 /** set image scale mode (screen, pixel, size). |
| 1429 * | |
| 1430 */ | |
|
761
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1431 var setScaleMode = function (data, mode) { |
|
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1432 delete data.scalerFlags.fit; |
|
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1433 delete data.scalerFlags.clip; |
|
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1434 delete data.scalerFlags.osize; |
|
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1435 if (mode === 'pixel') { |
|
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1436 data.scalerFlags.clip = 'clip'; |
|
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1437 } else if (mode === 'size') { |
|
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1438 data.scalerFlags.osize = 'osize'; |
|
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1439 } |
|
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1440 // mo=fit is default |
| 972 | 1441 // save mode |
| 1442 data.scaleMode = mode; | |
|
761
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
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760
diff
changeset
|
1443 }; |
| 775 | 1444 |
| 972 | 1445 /** get screen fit mode (width, height, both). |
| 1446 * | |
| 1447 */ | |
| 1448 var getFitMode = function (data) { | |
| 1449 if (data.dlOpts.fitwidth != null) { | |
| 1450 return "width"; | |
| 1451 } else if (data.dlOpts.fitheight != null) { | |
| 1452 return "height"; | |
| 1453 } | |
| 1454 // "both" is default | |
| 1455 return "both"; | |
| 1456 }; | |
| 1012 | 1457 |
| 972 | 1458 /** |
| 1459 * set screen fit mode (width, height, both). | |
| 1460 */ | |
| 1461 var setFitMode = function (data, mode) { | |
| 984 | 1462 var settings = data.settings; |
| 1012 | 1463 var imgSize = data.maxImgSize; |
| 972 | 1464 if (mode === 'width') { |
| 1465 data.dlOpts.fitwidth = 1; | |
| 1466 delete data.dlOpts.fitheight; | |
| 984 | 1467 if (imgSize != null) { |
| 1468 // fitwidth omits destination height | |
| 1469 settings.dw = imgSize.width; | |
| 1470 settings.dh = null; | |
| 1471 } | |
| 972 | 1472 } else if (mode === 'height') { |
| 1473 data.dlOpts.fitheight = 1; | |
| 1474 delete data.dlOpts.fitwidth; | |
| 984 | 1475 if (imgSize != null) { |
| 1476 // fitheight omits destination width | |
| 1477 settings.dw = null; | |
| 1478 settings.dh = imgSize.height; | |
| 1479 } | |
| 972 | 1480 } else { |
| 1481 delete data.dlOpts.fitwidth; | |
| 1482 delete data.dlOpts.fitheight; | |
| 984 | 1483 if (imgSize != null) { |
| 1484 settings.dw = imgSize.width; | |
| 1485 settings.dh = imgSize.height; | |
| 1486 } | |
| 972 | 1487 } |
| 1488 }; | |
| 1489 | |
| 949 | 1490 /** sets a key to a value (relative values with +/- if relative=true). |
| 1491 * | |
| 1492 */ | |
| 650 | 1493 var setNumValue = function(settings, key, value) { |
| 716 | 1494 if (value == null) return null; |
|
955
c8c441d1d7a0
fixed bug with prev/next page. (too quick in using jQuery functions)
robcast
parents:
954
diff
changeset
|
1495 if (isNumber(value)) { |
|
713
c1fa722c570e
more cosmetics: added options to validate with http://www.jslint.com
robcast
parents:
711
diff
changeset
|
1496 settings[key] = value; |
|
c1fa722c570e
more cosmetics: added options to validate with http://www.jslint.com
robcast
parents:
711
diff
changeset
|
1497 return value; |
|
c1fa722c570e
more cosmetics: added options to validate with http://www.jslint.com
robcast
parents:
711
diff
changeset
|
1498 } |
|
c1fa722c570e
more cosmetics: added options to validate with http://www.jslint.com
robcast
parents:
711
diff
changeset
|
1499 var sign = value[0]; |
| 650 | 1500 if (sign === '+' || sign === '-') { |
| 1501 if (settings[key] == null) { | |
|
651
694bdb86cbad
renamed 'actions' to 'buttons' and 'methods' to 'actions'
robcast
parents:
650
diff
changeset
|
1502 // this isn't perfect but still... |
| 650 | 1503 settings[key] = 0; |
|
713
c1fa722c570e
more cosmetics: added options to validate with http://www.jslint.com
robcast
parents:
711
diff
changeset
|
1504 } |
| 650 | 1505 settings[key] = parseFloat(settings[key]) + parseFloat(value); |
| 1506 } else { | |
| 1507 settings[key] = value; | |
|
713
c1fa722c570e
more cosmetics: added options to validate with http://www.jslint.com
robcast
parents:
711
diff
changeset
|
1508 } |
| 650 | 1509 return settings[key]; |
| 1510 }; | |
| 655 | 1511 |
| 949 | 1512 /** return width of border on $elem. |
| 1513 * assumes equal border width on all sides. | |
| 1514 */ | |
| 775 | 1515 var getBorderWidth = function($elem) { |
| 1516 var border = $elem.outerWidth() - $elem.width(); | |
| 1517 return border/2; | |
| 1518 }; | |
| 1519 | |
| 949 | 1520 /** return if the current zoomarea can be moved further. |
| 1521 * | |
| 1522 */ | |
| 878 | 1523 var canMove = function(data, movx, movy) { |
| 1524 var za = data.zoomArea; | |
| 1525 if (isFullArea(za)) return false; | |
| 1526 var x2 = za.x + za.width; | |
| 1527 var y2 = za.y + za.height; | |
| 949 | 1528 return (((movx < 0) && (za.x > 0)) |
| 878 | 1529 || ((movx > 0) && (x2 < 1.0)) |
| 1530 || ((movy < 0) && (za.y > 0)) | |
| 949 | 1531 || ((movy > 0) && (y2 < 1.0))); |
| 878 | 1532 }; |
| 1533 | |
| 949 | 1534 /** return if area is maximal. |
| 1535 * | |
| 1536 */ | |
| 795 | 1537 var isFullArea = function (area) { |
| 659 | 1538 return (area.width === 1.0) && (area.height === 1.0); |
| 655 | 1539 }; |
| 1540 | |
|
955
c8c441d1d7a0
fixed bug with prev/next page. (too quick in using jQuery functions)
robcast
parents:
954
diff
changeset
|
1541 /** return if the argument is a number. |
|
c8c441d1d7a0
fixed bug with prev/next page. (too quick in using jQuery functions)
robcast
parents:
954
diff
changeset
|
1542 * from Douglas Crockford, A.10. |
|
c8c441d1d7a0
fixed bug with prev/next page. (too quick in using jQuery functions)
robcast
parents:
954
diff
changeset
|
1543 * this is different from $.isNumeric(). |
|
c8c441d1d7a0
fixed bug with prev/next page. (too quick in using jQuery functions)
robcast
parents:
954
diff
changeset
|
1544 */ |
|
c8c441d1d7a0
fixed bug with prev/next page. (too quick in using jQuery functions)
robcast
parents:
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diff
changeset
|
1545 var isNumber = function (value) { |
|
c8c441d1d7a0
fixed bug with prev/next page. (too quick in using jQuery functions)
robcast
parents:
954
diff
changeset
|
1546 return typeof value === 'number' && isFinite(value); |
|
c8c441d1d7a0
fixed bug with prev/next page. (too quick in using jQuery functions)
robcast
parents:
954
diff
changeset
|
1547 }; |
| 949 | 1548 /** return number with reduced precision. |
| 1549 * ("crop senseless precision") | |
| 1550 */ | |
| 631 | 1551 var cropFloat = function (x) { |
| 637 | 1552 return parseInt(10000 * x, 10) / 10000; |
| 631 | 1553 }; |
| 655 | 1554 |
| 949 | 1555 /** return string from number with reduced precision. |
| 1556 * | |
| 1557 */ | |
| 813 | 1558 var cropFloatStr = function (x) { |
| 1559 return cropFloat(x).toString(); | |
| 1560 }; | |
| 1561 | |
| 692 | 1562 // fallback for console.log calls |
| 1563 if (customConsole) { | |
| 1564 var logFunction = function(type) { | |
| 1565 return function(){ | |
| 996 | 1566 var $debug = $('#'+defaults.cssPrefix+'debug'); // debug div |
| 692 | 1567 if (!$debug) return; |
| 1568 var args = Array.prototype.slice.call(arguments); | |
| 1569 var argtext = args.join(' '); | |
| 1570 var $logDiv = $('<div/>'); | |
| 1571 $logDiv.addClass(type); | |
| 1572 $logDiv.text(argtext); | |
| 1573 $debug.append($logDiv); | |
| 1574 }; | |
| 1575 }; | |
| 1576 console.log = logFunction('_log'); | |
| 1577 console.debug = logFunction('_debug'); | |
| 1578 console.error = logFunction('_error'); | |
|
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
|
1579 } |
| 692 | 1580 |
| 949 | 1581 /** functions to export to plugins. |
| 1582 */ | |
| 787 | 1583 fn = { |
| 791 | 1584 geometry : geom, |
| 787 | 1585 parseQueryString : parseQueryString, |
| 1586 getScalerUrl : getScalerUrl, | |
| 1587 getParamString : getParamString, | |
| 1588 getDigilibUrl : getDigilibUrl, | |
| 1589 unpackParams : unpackParams, | |
| 1590 packParams : packParams, | |
| 822 | 1591 packArea : packArea, |
| 1592 packScalerFlags : packScalerFlags, | |
| 795 | 1593 storeOptions : storeOptions, |
| 787 | 1594 redisplay : redisplay, |
| 1595 updateDisplay : updateDisplay, | |
| 791 | 1596 showDiv : showDiv, |
| 983 | 1597 setZoomArea : setZoomArea, |
|
950
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1598 setPreviewBg : setPreviewBg, |
| 787 | 1599 getImgTrafo : getImgTrafo, |
| 1600 getQuality : getQuality, | |
| 1601 setQuality : setQuality, | |
| 1602 getScaleMode : getScaleMode, | |
| 1603 setScaleMode : setScaleMode, | |
| 972 | 1604 getFitMode : getFitMode, |
| 1605 setFitMode : setFitMode, | |
| 878 | 1606 canMove : canMove, |
| 795 | 1607 isFullArea : isFullArea, |
| 978 | 1608 isNumber : isNumber, |
| 974 | 1609 getFullscreenRect : getFullscreenRect, |
| 813 | 1610 getBorderWidth : getBorderWidth, |
| 1611 cropFloat : cropFloat, | |
| 1612 cropFloatStr : cropFloatStr | |
| 787 | 1613 }; |
| 788 | 1614 |
|
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1615 // hook digilib plugin into jquery |
| 785 | 1616 $.fn.digilib = function (action) { |
|
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1617 // plugin extension mechanism, called when the plugins' code is read |
| 786 | 1618 if (action === 'plugin') { |
| 1619 var plugin = arguments[1]; | |
| 1620 // each plugin needs a name | |
| 1621 if (plugin.name != null) { | |
| 1622 plugins[plugin.name] = plugin; | |
|
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1623 // share common objects |
|
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1624 plugin.defaults = defaults; |
| 947 | 1625 plugin.buttons = buttons; |
|
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1626 plugin.actions = actions; |
|
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1627 plugin.fn = fn; |
|
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1628 plugin.plugins = plugins; |
|
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|
1629 // and install |
|
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1630 if (typeof plugin.install === 'function') { |
|
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|
1631 plugin.install(plugin); |
|
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1632 } |
| 786 | 1633 } |
|
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1634 // plugins will be initialised when action.init is called |
|
760
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1635 } else if (actions[action]) { |
|
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1636 // call action on this with the remaining arguments (inserting data as first argument) |
|
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1637 var $elem = $(this); |
|
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|
1638 var data = $elem.data('digilib'); |
|
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1639 var args = Array.prototype.slice.call(arguments, 1); |
|
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|
1640 args.unshift(data); |
|
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|
1641 return actions[action].apply(this, args); |
|
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|
1642 } else if (typeof action === 'object' || !action) { |
|
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|
1643 // call init on the digilib jQuery object |
|
651
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1644 return actions.init.apply(this, arguments); |
| 605 | 1645 } else { |
|
713
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1646 $.error('action ' + action + ' does not exist on jQuery.digilib'); |
|
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1647 } |
| 605 | 1648 }; |
| 692 | 1649 |
|
991
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|
1650 })(jQuery); |