Mercurial > hg > digilib-old
annotate webapp/src/main/webapp/jquery/jquery.digilib.js @ 954:36102de2301e
code cosmetics
author | robcast |
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date | Wed, 04 Jan 2012 14:26:55 +0100 |
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1 /* Copyright (c) 2011 Martin Raspe, Robert Casties |
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2 |
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3 This program is free software: you can redistribute it and/or modify |
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4 it under the terms of the GNU Lesser General Public License as published by |
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5 the Free Software Foundation, either version 2 of the License, or |
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6 (at your option) any later version. |
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7 |
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8 This program is distributed in the hope that it will be useful, |
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9 but WITHOUT ANY WARRANTY; without even the implied warranty of |
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10 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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11 GNU Lesser General Public License for more details. |
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12 |
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13 You should have received a copy of the GNU Lesser General Public License |
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14 along with this program. If not, see <http://www.gnu.org/licenses/>. |
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15 |
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16 Authors: |
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17 Martin Raspe, Robert Casties, 11.1.2011 |
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18 */ |
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19 |
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20 /** |
604 | 21 * digilib jQuery plugin |
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22 **/ |
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23 |
767 | 24 /*jslint browser: true, debug: true, forin: true |
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25 */ |
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26 |
636 | 27 // fallback for console.log calls |
797 | 28 if (typeof console === 'undefined') { |
636 | 29 var console = { |
692 | 30 log : function(){}, |
31 debug : function(){}, | |
32 error : function(){} | |
33 }; | |
779 | 34 var customConsole = false; // set to true if debugging for MS IE |
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35 } |
604 | 36 |
37 (function($) { | |
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38 |
605 | 39 var defaults = { |
616 | 40 // version of this script |
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41 'version' : 'jquery.digilib.js 2.1b1', |
616 | 42 // logo url |
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43 'logoUrl' : 'img/digilib-logo-text1.png', |
635 | 44 // homepage url (behind logo) |
45 'homeUrl' : 'http://digilib.berlios.de', | |
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46 // base URL to digilib (e.g. 'http://digilib.mpiwg-berlin.mpg.de/digitallibrary') |
744 | 47 'digilibBaseUrl' : null, |
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48 // base URL to Scaler servlet (usually digilibBaseUrl+'/servlet/Scaler') |
652 | 49 'scalerBaseUrl' : null, |
610 | 50 // list of Scaler parameters |
627 | 51 'scalerParamNames' : ['fn','pn','dw','dh','ww','wh','wx','wy','ws','mo', |
52 'rot','cont','brgt','rgbm','rgba','ddpi','ddpix','ddpiy'], | |
53 // Scaler parameter defaults | |
643 | 54 'pn' : 1, |
627 | 55 'ww' : 1.0, |
56 'wh' : 1.0, | |
57 'wx' : 0.0, | |
58 'wy' : 0.0, | |
59 'ws' : 1.0, | |
643 | 60 'mo' : '', |
61 'rot' : 0, | |
62 'cont' : 0, | |
63 'brgt' : 0, | |
64 'rgbm' : '0/0/0', | |
65 'rgba' : '0/0/0', | |
66 'ddpi' : null, | |
67 'ddpix' : null, | |
68 'ddpiy' : null, | |
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69 // list of digilib parameters |
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70 'digilibParamNames' : ['fn','pn','ww','wh','wx','wy','ws','mo','rot','cont','brgt','rgbm','rgba','ddpi','mk','clop'], |
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71 // digilib parameter defaults |
643 | 72 'mk' : '', |
650 | 73 'clop' : '', |
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74 // list of additional parameters (for page outside of digilib) |
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75 'additionalParamNames' : [], |
914 | 76 // list of parameters to suppress when generating page URL |
77 'suppressParamNames' : null, | |
643 | 78 // mode of operation: |
79 // fullscreen = take parameters from page URL, keep state in page URL | |
80 // embedded = take parameters from Javascript options, keep state inside object | |
610 | 81 'interactionMode' : 'fullscreen', |
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82 // arrow bar overlays for moving the zoomed area |
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83 'showZoomArrows' : true, |
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84 // zoom arrow bar minimal width (for small images) |
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85 'zoomArrowMinWidth' : 6, |
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86 // zoom arrow bar standard width |
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87 'zoomArrowWidth' : 32, |
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88 // by what percentage should the arrows move the zoomed area? |
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89 'zoomArrowMoveFactor' : 0.5, |
616 | 90 // is the "about" window shown? |
741 | 91 'isAboutDivVisible' : false, |
954 | 92 // default size of preview image for drag-scroll (same as Bird's Eye View image) |
93 'previewImgWidth' : 200, | |
94 'previewImgHeight' : 200, | |
95 // maximum width or height of preview background image for drag-scroll | |
778 | 96 'maxBgSize' : 10000, |
795 | 97 // parameters used by background image |
954 | 98 'previewImgParamNames' : ['fn','pn','dw','dh','mo','rot'], |
856 | 99 // reserved space in full page display (default value accounts for vertical scrollbar) |
785 | 100 'scalerInset' : 10 |
610 | 101 }; |
655 | 102 |
786 | 103 // list of plugins |
104 var plugins = {}; | |
787 | 105 // object to export functions to plugins |
948 | 106 var fn = null; |
786 | 107 // affine geometry plugin stub |
948 | 108 var geom = null; |
944 | 109 // rectangle with maximum zoom area |
948 | 110 var FULL_AREA = null; |
944 | 111 // limit for float comparison |
947 | 112 var EPSILON = 0.0001; |
113 // list of buttons | |
114 var buttons = {}; | |
655 | 115 |
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116 var actions = { |
954 | 117 |
118 /** init: digilib initialization | |
119 * | |
120 * @param options | |
121 * @returns | |
122 */ | |
668 | 123 init : function(options) { |
786 | 124 // import geometry classes |
125 if (plugins.geometry == null) { | |
126 $.error("jquery.digilib.geometry plugin not found!"); | |
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127 // last straw: old version |
785 | 128 geom = dlGeometry(); |
129 } else { | |
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130 // geometry plugin puts classes in the shared fn |
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131 geom = fn.geometry; |
785 | 132 } |
133 FULL_AREA = geom.rectangle(0, 0, 1, 1); | |
788 | 134 |
668 | 135 // settings for this digilib instance are merged from defaults and options |
136 var settings = $.extend({}, defaults, options); | |
137 var isFullscreen = settings.interactionMode === 'fullscreen'; | |
138 var queryParams = {}; | |
139 if (isFullscreen) { | |
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140 queryParams = parseQueryParams(); |
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141 // filter additional parameters |
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142 for (var p in queryParams) { |
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143 if ($.inArray(p, settings.digilibParamNames) < 0) { |
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144 settings.additionalParamNames.push(p); |
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145 } |
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146 } |
668 | 147 } |
148 return this.each(function() { | |
149 var $elem = $(this); | |
150 var data = $elem.data('digilib'); | |
688 | 151 var params, elemSettings; |
668 | 152 // if the plugin hasn't been initialized yet |
153 if (!data) { | |
154 // merge query parameters | |
155 if (isFullscreen) { | |
688 | 156 params = queryParams; |
668 | 157 } else { |
688 | 158 params = parseImgParams($elem); |
785 | 159 if ($.cookie) { |
727 | 160 // retrieve params from cookie |
161 var ck = "digilib-embed:fn:" + escape(params.fn) + ":pn:" + (params.pn || '1'); | |
785 | 162 var cs = $.cookie(ck); |
727 | 163 console.debug("get cookie=", ck, " value=", cs); |
164 if (cs) { | |
165 var cp = parseQueryString(cs); | |
728 | 166 // ignore fn and pn from cookie TODO: should we keep pn? |
167 delete cp.fn; | |
168 delete cp.pn; | |
785 | 169 $.extend(params, cp); |
727 | 170 } |
171 } | |
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172 } |
856 | 173 // setup $elem.data, needs "deep copy" because of nesting |
849 | 174 elemSettings = $.extend(true, {}, settings, params); |
697 | 175 data = { |
856 | 176 // let $(this) know about $(this) :-) |
668 | 177 $elem : $elem, |
856 | 178 // let $elem have its own copy of settings |
668 | 179 settings : elemSettings, |
856 | 180 // and of the URL query parameters |
788 | 181 queryParams : params, |
668 | 182 }; |
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183 // store in jQuery data element |
668 | 184 $elem.data('digilib', data); |
949 | 185 } else { |
186 // data exists | |
187 elemSettings = data.settings; | |
668 | 188 } |
189 unpackParams(data); | |
744 | 190 // check if browser knows *background-size |
741 | 191 for (var bs in {'':1, '-moz-':1, '-webkit-':1, '-o-':1}) { |
192 if ($elem.css(bs+'background-size')) { | |
193 data.hasBgSize = true; | |
194 data.bgSizeName = bs+'background-size'; | |
195 break; | |
196 } | |
197 } | |
944 | 198 data.hasPreviewBg = false; |
942 | 199 // check if browser supports AJAX-like URL-replace without reload |
200 data.hasAsyncReload = (typeof history.replaceState === 'function'); | |
744 | 201 // check digilib base URL |
202 if (elemSettings.digilibBaseUrl == null) { | |
203 if (isFullscreen) { | |
204 // take current host | |
205 var url = window.location.toString(); | |
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206 // assume the page lives in [webapp]/jquery/ |
915 | 207 var pos = url.indexOf('/jquery/'); |
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208 if (pos > 0) { |
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209 elemSettings.digilibBaseUrl = url.substring(0, pos); |
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210 } |
744 | 211 } else { |
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212 // may be we got the scaler URL from the img |
744 | 213 var url = elemSettings.scalerBaseUrl; |
214 if (url) { | |
215 // build it from scaler URL | |
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216 var pos = url.indexOf('/servlet/Scaler'); |
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217 elemSettings.digilibBaseUrl = url.substring(0, pos); |
744 | 218 } |
219 } | |
220 } | |
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221 // check scaler base URL |
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222 if (elemSettings.scalerBaseUrl == null) { |
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223 if (elemSettings.digilibBaseUrl) { |
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224 elemSettings.scalerBaseUrl = elemSettings.digilibBaseUrl + '/servlet/Scaler'; |
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225 } |
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226 } |
947 | 227 // set up event handlers |
228 $(data).on('update', handleUpdate); // handleUpdate needs to be the first handler for update | |
229 $(data).on('changeZoomArea', handleChangeZoomArea); | |
786 | 230 // initialise plugins |
787 | 231 for (n in plugins) { |
232 var p = plugins[n]; | |
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233 if (typeof p.init === 'function') { |
946 | 234 // call the plugins init() method |
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235 p.init(data); |
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236 } |
786 | 237 } |
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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); | |
856 | 246 // arrow overlays for moving zoomed detail |
247 setupZoomArrows(data); | |
795 | 248 // send setup event |
249 $(data).trigger('setup'); | |
668 | 250 }); |
251 }, | |
252 | |
954 | 253 /** destroy: clean up digilib |
254 * | |
255 * @param data | |
256 * @returns | |
257 */ | |
668 | 258 destroy : function(data) { |
259 return this.each(function(){ | |
260 var $elem = $(this); | |
917 | 261 $(window).off('.digilib'); // unbind all digilibs(?) |
668 | 262 data.digilib.remove(); |
263 $elem.removeData('digilib'); | |
264 }); | |
265 }, | |
266 | |
954 | 267 /** show or hide the 'about' window |
268 * | |
269 * @param data | |
270 * @param show | |
271 */ | |
668 | 272 showAboutDiv : function(data, show) { |
765 | 273 var on = showDiv(data.settings.isAboutDivVisible, data.$aboutDiv, show); |
274 data.settings.isAboutDivVisible = on; | |
946 | 275 //FIXME: highlightButtons(data, 'help', on); |
668 | 276 }, |
655 | 277 |
954 | 278 /** goto given page nr (+/-: relative) |
279 * | |
280 * @param data | |
281 * @param pageNr | |
282 * @returns {Boolean} | |
283 */ | |
668 | 284 gotoPage : function (data, pageNr) { |
285 var settings = data.settings; | |
286 var oldpn = settings.pn; | |
716 | 287 if (pageNr == null) { |
288 pageNr = window.prompt("Goto page number", oldpn); | |
289 } | |
668 | 290 var pn = setNumValue(settings, "pn", pageNr); |
291 if (pn == null) return false; // nothing happened | |
292 if (pn < 1) { | |
293 alert("no such page (page number too low)"); | |
294 settings.pn = oldpn; | |
295 return false; | |
296 } | |
767 | 297 // TODO: how do we get pt? |
668 | 298 if (settings.pt) { |
299 if (pn > settings.pt) { | |
300 alert("no such page (page number too high)"); | |
623 | 301 settings.pn = oldpn; |
302 return false; | |
634 | 303 } |
668 | 304 } |
305 // reset mk and others(?) | |
306 data.marks = []; | |
927 | 307 data.zoomArea = FULL_AREA.copy(); |
668 | 308 // then reload |
309 redisplay(data); | |
310 }, | |
654 | 311 |
954 | 312 /** zoom by a given factor |
313 * | |
314 * @param data | |
315 * @param factor | |
316 */ | |
668 | 317 zoomBy : function (data, factor) { |
318 zoomBy(data, factor); | |
319 }, | |
647 | 320 |
954 | 321 /** zoom to area (or interactive) |
322 * | |
323 * @param data | |
324 * @param area | |
325 */ | |
767 | 326 zoomArea : function (data, area) { |
327 if (area == null) { | |
328 // interactively | |
329 zoomArea(data); | |
330 } else { | |
331 data.zoomArea = geom.rectangle(area); | |
332 redisplay(data); | |
333 } | |
668 | 334 }, |
650 | 335 |
954 | 336 /** zoom out to full page |
337 * | |
338 * @param data | |
339 * @param mode | |
340 */ | |
668 | 341 zoomFull : function (data, mode) { |
917 | 342 data.zoomArea = FULL_AREA.copy(); |
668 | 343 if (mode === 'width') { |
344 data.dlOpts.fitwidth = 1; | |
345 delete data.dlOpts.fitheight; | |
346 } else if (mode === 'height') { | |
347 data.dlOpts.fitheight = 1; | |
348 delete data.dlOpts.fitwidth; | |
349 } else { | |
350 delete data.dlOpts.fitwidth; | |
351 delete data.dlOpts.fitheight; | |
352 } | |
353 redisplay(data); | |
354 }, | |
355 | |
954 | 356 /** move zoomed area |
357 * | |
358 * @param data | |
359 * @param dx | |
360 * @param dy | |
361 */ | |
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362 moveZoomArea : function (data, dx, dy) { |
944 | 363 var za = data.zoomArea.copy(); |
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364 var factor = data.settings.zoomArrowMoveFactor; |
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365 var deltaX = dx * factor * za.width; |
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366 var deltaY = dy * factor * za.height; |
931 | 367 var delta = geom.position(deltaX, deltaY); |
368 za.addPosition(delta); | |
944 | 369 za = FULL_AREA.fit(za); |
950
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370 setZoomArea(data, za); |
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371 redisplay(data); |
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372 }, |
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373 |
954 | 374 /** set a mark by clicking (or giving a position) |
375 * | |
376 * @param data | |
377 * @param mpos | |
378 */ | |
668 | 379 setMark : function (data, mpos) { |
380 if (mpos == null) { | |
381 // interactive | |
382 setMark(data); | |
383 } else { | |
384 // use position | |
385 data.marks.push(pos); | |
663 | 386 redisplay(data); |
604 | 387 } |
668 | 388 }, |
389 | |
954 | 390 /** remove the last mark |
391 * | |
392 * @param data | |
393 */ | |
668 | 394 removeMark : function (data) { |
395 data.marks.pop(); | |
396 redisplay(data); | |
397 }, | |
398 | |
954 | 399 /** mirror the image |
400 * | |
401 * @param data | |
402 * @param mode | |
403 */ | |
668 | 404 mirror : function (data, mode) { |
405 var flags = data.scalerFlags; | |
406 if (mode === 'h') { | |
407 if (flags.hmir) { | |
408 delete flags.hmir; | |
409 } else { | |
410 flags.hmir = 1; | |
411 } | |
412 } else { | |
413 if (flags.vmir) { | |
414 delete flags.vmir; | |
415 } else { | |
416 flags.vmir = 1; | |
417 } | |
418 } | |
419 redisplay(data); | |
420 }, | |
650 | 421 |
954 | 422 /** rotate the image |
423 * | |
424 * @param data | |
425 * @param angle | |
426 */ | |
668 | 427 rotate : function (data, angle) { |
428 var rot = data.settings.rot; | |
429 if (angle == null) { | |
430 angle = window.prompt("Rotation angle:", rot); | |
431 } | |
432 data.settings.rot = angle; | |
433 redisplay(data); | |
434 }, | |
435 | |
954 | 436 /** change brightness |
437 * | |
438 * @param data | |
439 * @param factor | |
440 */ | |
668 | 441 brightness : function (data, factor) { |
442 var brgt = data.settings.brgt; | |
443 if (factor == null) { | |
444 factor = window.prompt("Brightness (-255..255)", brgt); | |
445 } | |
446 data.settings.brgt = factor; | |
447 redisplay(data); | |
448 }, | |
449 | |
954 | 450 /** change contrast |
451 * | |
452 * @param data | |
453 * @param factor | |
454 */ | |
668 | 455 contrast : function (data, factor) { |
456 var cont = data.settings.cont; | |
457 if (factor == null) { | |
458 factor = window.prompt("Contrast (-8, 8)", cont); | |
459 } | |
460 data.settings.cont = factor; | |
461 redisplay(data); | |
688 | 462 }, |
710 | 463 |
954 | 464 /** reset image parameters to defaults |
465 * TODO: improve this! | |
466 * | |
467 * @param data | |
468 */ | |
688 | 469 reset : function (data) { |
470 var settings = data.settings; | |
471 var paramNames = settings.digilibParamNames; | |
472 var params = data.queryParams; | |
473 // delete all digilib parameters | |
474 for (var i = 0; i < paramNames.length; i++) { | |
475 var paramName = paramNames[i]; | |
476 delete settings[paramName]; | |
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477 } |
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478 settings.fn = params.fn || ''; // no default defined |
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479 settings.pn = params.pn || defaults.pn; |
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480 settings.dw = params.dw; |
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481 settings.dh = params.dh; |
709 | 482 settings.isBirdDivVisible = false; |
946 | 483 settings.visibleButtonSets = 1; // FIXME |
735
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484 // resets zoomArea, marks, scalerflags |
917 | 485 data.zoomArea = FULL_AREA.copy(); |
735
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486 data.marks = []; |
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487 data.scalerFlags = {}; |
712 | 488 delete data.dlOpts.fitwidth; |
489 delete data.dlOpts.fitheight; | |
688 | 490 redisplay(data); |
689 | 491 }, |
492 | |
954 | 493 /** presents a reference url (returns value if noprompt) |
494 * | |
495 * @param data | |
496 * @param noprompt | |
497 * @returns | |
498 */ | |
703 | 499 reference : function (data, noprompt) { |
744 | 500 var url = getDigilibUrl(data); |
703 | 501 if (noprompt == null) { |
502 window.prompt("URL reference to the current view", url); | |
503 } | |
504 return url; | |
505 }, | |
710 | 506 |
954 | 507 /** set image quality |
508 * | |
509 * @param data | |
510 * @param qual | |
511 */ | |
748 | 512 setQuality : function (data, qual) { |
703 | 513 var oldq = getQuality(data); |
514 if (qual == null) { | |
515 qual = window.prompt("Image quality (0..2)", oldq); | |
516 } | |
517 qual = parseInt(qual, 10); | |
518 if (qual >= 0 && qual <= 2) { | |
519 setQuality(data, qual); | |
520 redisplay(data); | |
521 } | |
754
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522 }, |
760
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523 |
954 | 524 /** calibrate (only faking) |
525 * | |
526 * @param data | |
527 * @param res | |
528 */ | |
772
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529 calibrate : function (data, res) { |
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530 var oldRes = data.settings.ddpi; |
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531 if (res == null) { |
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532 res = window.prompt("Display resolution (dpi)", oldRes); |
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533 } |
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534 if (res != null) { |
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535 data.settings.ddpi = res; |
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536 redisplay(data); |
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537 } |
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538 }, |
775 | 539 |
954 | 540 /** set image scale mode |
541 * | |
542 * @param data | |
543 * @param mode | |
544 */ | |
761
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545 setScaleMode : function (data, mode) { |
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546 var oldM = getScaleMode(data); |
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547 if (mode == null) { |
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548 mode = window.prompt("Image scale mode (screen, pixel, size)", oldM); |
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549 } |
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550 if (mode != null) { |
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551 setScaleMode(data, mode); |
763
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552 data.scaleMode = mode; |
761
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553 redisplay(data); |
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554 } |
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555 } |
775 | 556 |
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557 // end of actions |
605 | 558 }; |
604 | 559 |
954 | 560 /** return parameters from page url |
561 * | |
562 */ | |
607 | 563 var parseQueryParams = function() { |
636 | 564 return parseQueryString(window.location.search.slice(1)); |
565 }; | |
655 | 566 |
954 | 567 /** returns parameters from embedded img-element |
568 * | |
569 */ | |
607 | 570 var parseImgParams = function($elem) { |
613
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571 var src = $elem.find('img').first().attr('src'); |
710 | 572 if (!src) return null; |
607 | 573 var pos = src.indexOf('?'); |
574 var query = (pos < 0) ? '' : src.substring(pos + 1); | |
575 var scalerUrl = src.substring(0, pos); | |
627 | 576 var params = parseQueryString(query); |
577 params.scalerBaseUrl = scalerUrl; | |
578 return params; | |
636 | 579 }; |
607 | 580 |
954 | 581 /** parses query parameter string into parameter object |
582 * | |
583 */ | |
607 | 584 var parseQueryString = function(query) { |
701 | 585 var params = {}; |
586 if (query == null) return params; | |
607 | 587 var pairs = query.split("&"); |
636 | 588 //var keys = []; |
607 | 589 for (var i = 0; i < pairs.length; i++) { |
590 var pair = pairs[i].split("="); | |
591 if (pair.length === 2) { | |
627 | 592 params[pair[0]] = pair[1]; |
636 | 593 //keys.push(pair[0]); |
634 | 594 } |
636 | 595 } |
627 | 596 return params; |
636 | 597 }; |
668 | 598 |
954 | 599 /** return a query string from key names from a parameter hash |
600 * (ignores keys if the same value is in defaults) | |
601 * | |
602 */ | |
643 | 603 var getParamString = function (settings, keys, defaults) { |
615 | 604 var paramString = ''; |
650 | 605 var nx = false; |
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606 for (var i = 0; i < keys.length; ++i) { |
615 | 607 var key = keys[i]; |
663 | 608 if ((settings[key] != null) && ((defaults == null) || (settings[key] != defaults[key]))) { |
615 | 609 // first param gets no '&' |
650 | 610 if (nx) { |
611 paramString += '&'; | |
612 } else { | |
613 nx = true; | |
614 } | |
615 | 615 // add parm=val |
616 paramString += key + '=' + settings[key]; | |
643 | 617 } |
615 | 618 } |
619 return paramString; | |
631 | 620 }; |
621 | |
954 | 622 /** returns URL and query string for Scaler |
623 * | |
624 */ | |
636 | 625 var getScalerUrl = function (data) { |
741 | 626 packParams(data); |
653 | 627 var settings = data.settings; |
652 | 628 if (settings.scalerBaseUrl == null) { |
629 alert("ERROR: URL of digilib Scaler servlet missing!"); | |
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630 } |
636 | 631 var keys = settings.scalerParamNames; |
643 | 632 var queryString = getParamString(settings, keys, defaults); |
636 | 633 var url = settings.scalerBaseUrl + '?' + queryString; |
634 return url; | |
635 }; | |
636 | |
954 | 637 /** returns URL for preview background image |
638 * | |
639 */ | |
640 var getPreviewImgUrl = function (data, moreParams) { | |
741 | 641 var settings = data.settings; |
795 | 642 var bgOptions = { |
954 | 643 dw : settings.previewImgWidth, |
644 dh : settings.previewImgHeight | |
741 | 645 }; |
795 | 646 var bgSettings = $.extend({}, settings, bgOptions); |
931 | 647 // filter scaler flags (use only hmir and vmir) |
795 | 648 if (bgSettings.mo != null) { |
649 var mo = ''; | |
650 if (data.scalerFlags.hmir != null) { | |
651 mo += 'hmir,'; | |
767 | 652 } |
795 | 653 if (data.scalerFlags.vmir != null) { |
654 mo += 'vmir'; | |
655 } | |
656 bgSettings.mo = mo; | |
743 | 657 } |
954 | 658 var params = getParamString(bgSettings, settings.previewImgParamNames, defaults); |
743 | 659 var url = settings.scalerBaseUrl + '?' + params; |
741 | 660 return url; |
661 }; | |
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662 |
954 | 663 /** returns URL and query string for current digilib |
664 * | |
665 */ | |
644
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666 var getDigilibUrl = function (data) { |
643 | 667 packParams(data); |
636 | 668 var settings = data.settings; |
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669 var paramList = settings.additionalParamNames.concat(settings.digilibParamNames); |
914 | 670 if (settings.suppressParamNames != null) { |
671 // eliminate suppressed parameters from list | |
672 paramList = $.map(paramList, function(e, idx) { | |
673 if ($.inArray(e, settings.suppressParamNames) >= 0) { | |
674 return null; | |
675 } else { | |
676 return e; | |
677 } | |
678 }); | |
679 } | |
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680 var queryString = getParamString(settings, paramList, defaults); |
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681 // take url from current location |
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682 var url = window.location.href; |
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683 var pos = url.indexOf('?'); |
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684 if (pos > -1) { |
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685 url = url.substring(0, pos); |
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686 } |
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687 return url + '?' + queryString; |
636 | 688 }; |
689 | |
954 | 690 /** loads image information from digilib server via HTTP |
691 * | |
692 */ | |
797 | 693 var loadImageInfo = function (data) { |
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694 var settings = data.settings; |
917 | 695 // bind default function (only once) |
696 $(data).off('imageInfo', handleImageInfo); | |
697 $(data).on('imageInfo', handleImageInfo); | |
698 var url = settings.digilibBaseUrl + '/ImgInfo-json.jsp'; | |
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699 url += '?' + getParamString(settings, ['fn', 'pn'], defaults); |
767 | 700 // TODO: better error handling |
785 | 701 $.getJSON(url, function (json) { |
754
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702 console.debug("got json data=", json); |
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703 data.imgInfo = json; |
797 | 704 // send event |
705 $(data).trigger('imageInfo', [json]); | |
754
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706 }); |
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707 }; |
775 | 708 |
954 | 709 /** processes some parameters into objects and stuff |
710 * | |
711 */ | |
631 | 712 var unpackParams = function (data) { |
713 var settings = data.settings; | |
636 | 714 // zoom area |
631 | 715 var zoomArea = geom.rectangle(settings.wx, settings.wy, settings.ww, settings.wh); |
643 | 716 data.zoomArea = zoomArea; |
636 | 717 // marks |
631 | 718 var marks = []; |
949 | 719 var pa; |
650 | 720 if (settings.mk) { |
721 var mk = settings.mk; | |
722 if (mk.indexOf(";") >= 0) { | |
949 | 723 pa = mk.split(";"); // old format with ";" |
650 | 724 } else { |
949 | 725 pa = mk.split(","); // new format |
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726 } |
650 | 727 for (var i = 0; i < pa.length ; i++) { |
728 var pos = pa[i].split("/"); | |
729 if (pos.length > 1) { | |
730 marks.push(geom.position(pos[0], pos[1])); | |
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731 } |
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732 } |
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733 } |
643 | 734 data.marks = marks; |
650 | 735 // mo (Scaler flags) |
736 var flags = {}; | |
737 if (settings.mo) { | |
738 var pa = settings.mo.split(","); | |
739 for (var i = 0; i < pa.length ; i++) { | |
740 flags[pa[i]] = pa[i]; | |
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741 } |
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742 } |
650 | 743 data.scalerFlags = flags; |
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744 data.scaleMode = getScaleMode(data); |
723 | 745 retrieveOptions(data); |
655 | 746 }; |
747 | |
954 | 748 /** put area into parameters |
749 * | |
750 */ | |
822 | 751 var packArea = function (settings, area) { |
752 if (!area) return; | |
753 // zoom area | |
754 settings.wx = cropFloat(area.x); | |
755 settings.wy = cropFloat(area.y); | |
756 settings.ww = cropFloat(area.width); | |
757 settings.wh = cropFloat(area.height); | |
758 }; | |
759 | |
954 | 760 /** put marks into parameters |
761 * | |
762 */ | |
822 | 763 var packMarks = function (settings, marks) { |
764 if (!marks) return; | |
765 settings.mk = ''; | |
766 for (var i = 0; i < marks.length; i++) { | |
767 if (i) { | |
768 settings.mk += ','; | |
769 } | |
770 settings.mk += | |
771 cropFloatStr(marks[i].x) + '/' + | |
772 cropFloatStr(marks[i].y); | |
773 } | |
774 }; | |
775 | |
954 | 776 /** pack scaler flags into parameters |
777 * | |
778 */ | |
822 | 779 var packScalerFlags = function (settings, flags) { |
780 if (!flags) return; | |
781 var mo = ''; | |
782 for (var f in flags) { | |
783 if (mo) { | |
784 mo += ','; | |
785 } | |
786 mo += f; | |
787 } | |
788 settings.mo = mo; | |
789 }; | |
790 | |
954 | 791 /** put objects back into parameters |
792 * | |
793 */ | |
631 | 794 var packParams = function (data) { |
795 var settings = data.settings; | |
822 | 796 packArea(settings, data.zoomArea); |
797 packMarks(settings, data.marks); | |
798 packScalerFlags(settings, data.scalerFlags); | |
799 // store user interface options in cookie | |
723 | 800 storeOptions(data); |
709 | 801 }; |
688 | 802 |
954 | 803 /** store digilib options in a cookie |
804 * | |
805 */ | |
723 | 806 var storeOptions = function (data) { |
709 | 807 var settings = data.settings; |
808 if (data.dlOpts) { | |
809 // save digilib settings in options | |
810 data.dlOpts.birdview = settings.isBirdDivVisible ? 1 : 0; | |
811 data.dlOpts.buttons = settings.visibleButtonSets; | |
812 var clop = ''; | |
813 for (var o in data.dlOpts) { | |
814 if (clop) { | |
815 clop += '&'; | |
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816 } |
709 | 817 clop += o + '=' + data.dlOpts[o]; |
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818 } |
785 | 819 if ($.cookie) { |
709 | 820 var ck = "digilib:fn:" + escape(settings.fn) + ":pn:" + settings.pn; |
821 console.debug("set cookie=", ck, " value=", clop); | |
785 | 822 $.cookie(ck, clop); |
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823 } |
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824 } |
785 | 825 if (settings.interactionMode !== 'fullscreen' && $.cookie) { |
727 | 826 // store normal parameters in cookie for embedded mode |
827 var qs = getParamString(settings, settings.digilibParamNames, defaults); | |
828 var ck = "digilib-embed:fn:" + escape(settings.fn) + ":pn:" + settings.pn; | |
829 console.debug("set cookie=", ck, " value=", qs); | |
785 | 830 $.cookie(ck, qs); |
727 | 831 } |
631 | 832 }; |
655 | 833 |
954 | 834 /** restrieve digilib options from a cookie |
835 * | |
836 */ | |
723 | 837 var retrieveOptions = function (data) { |
709 | 838 // clop (digilib options) |
839 var opts = {}; | |
840 var settings = data.settings; | |
785 | 841 if ($.cookie) { |
709 | 842 // read from cookie |
843 var ck = "digilib:fn:" + escape(settings.fn) + ":pn:" + settings.pn; | |
785 | 844 var cp = $.cookie(ck); |
709 | 845 console.debug("get cookie=", ck, " value=", cp); |
846 // in query string format | |
847 opts = parseQueryString(cp); | |
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848 } |
709 | 849 data.dlOpts = opts; |
850 // birdview option | |
851 if (opts.birdview != null) { | |
852 settings.isBirdDivVisible = opts.birdview === '1'; | |
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853 } |
709 | 854 // visible button sets |
855 if (opts.buttons != null) { | |
856 settings.visibleButtonSets = opts.buttons; | |
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857 } |
711 | 858 }; |
709 | 859 |
949 | 860 /** (re)load the image with the current settings. |
861 * | |
862 */ | |
644
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863 var redisplay = function (data) { |
636 | 864 var settings = data.settings; |
865 if (settings.interactionMode === 'fullscreen') { | |
866 // update location.href (browser URL) in fullscreen mode | |
644
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867 var url = getDigilibUrl(data); |
636 | 868 var history = window.history; |
942 | 869 if (data.hasAsyncReload) { |
798
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870 console.debug("faking reload to "+url); |
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871 // change url without reloading (stateObj, title, url) |
890
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872 // TODO: we really need to push the state in stateObj and listen to pop-events |
913
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873 try { |
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874 history.replaceState({}, '', url); |
931 | 875 // show busy cursor |
876 $('body').css('cursor', 'progress'); | |
934 | 877 data.$scaler.css('cursor', 'progress'); |
913
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878 // change img src |
949 | 879 var $img = data.$img; |
913
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880 var imgurl = getScalerUrl(data); |
949 | 881 $img.attr('src', imgurl); |
952
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882 // trigger load event if image is cached. Doesn't work with Firefox!! |
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883 //if ($img.prop('complete')) $img.trigger('load'); |
917 | 884 if (data.scalerFlags.clip != null || data.scalerFlags.osize != null) { |
885 // we need image info, do we have it? | |
886 if (data.imgInfo == null) { | |
887 loadImageInfo(data); | |
888 } | |
889 } | |
950
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890 // update if we have a preview |
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891 if (data.hasPreviewBg) { |
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892 $(data).trigger('update'); |
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893 } |
946 | 894 //FIXME: highlightButtons(data); |
913
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895 // send event |
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896 $(data).trigger('redisplay'); |
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897 } catch (e) { |
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898 console.error("replaceState("+url+") didn't work: "+e); |
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899 // reload window |
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900 window.location = url; |
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901 } |
798
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902 } else { |
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903 // reload window |
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904 window.location = url; |
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905 } |
636 | 906 } else { |
907 // embedded mode -- just change img src | |
931 | 908 // show busy cursor |
909 $('body').css('cursor', 'progress'); | |
934 | 910 data.$scaler.css('cursor', 'progress'); |
949 | 911 var $img = data.$img; |
636 | 912 var url = getScalerUrl(data); |
949 | 913 $img.attr('src', url); |
914 // trigger load event if image is cached | |
915 if ($img.prop('complete')) $img.trigger('load'); | |
917 | 916 if (data.scalerFlags.clip != null || data.scalerFlags.osize != null) { |
917 // we need image info, do we have it? | |
918 if (data.imgInfo == null) { | |
919 loadImageInfo(data); | |
920 } | |
921 } | |
949 | 922 //FIXME: highlightButtons(data); |
795 | 923 // send event |
924 $(data).trigger('redisplay'); | |
913
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925 } |
622 | 926 }; |
927 | |
949 | 928 /** update display (overlays etc.) |
929 * (just triggers "update" event) | |
930 */ | |
767 | 931 var updateDisplay = function (data) { |
947 | 932 // send event |
933 $(data).trigger('update'); | |
934 }; | |
935 | |
949 | 936 /** handle "update" display event. |
954 | 937 * updates image transform, redraws marks etc. |
949 | 938 */ |
947 | 939 var handleUpdate = function (evt) { |
940 var data = this; | |
767 | 941 updateImgTrafo(data); |
942 renderMarks(data); | |
943 setupZoomDrag(data); | |
862 | 944 renderZoomArrows(data); |
767 | 945 }; |
947 | 946 |
949 | 947 /** returns maximum size for scaler img in fullscreen mode. |
948 * | |
949 */ | |
778 | 950 var getFullscreenImgSize = function (data) { |
886
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951 var mode = data.settings.interactionMode; |
662 | 952 var $win = $(window); |
953 var winH = $win.height(); | |
779 | 954 var winW = $win.width(); |
955 var $body = $('body'); | |
886
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956 // include standard body margins and check plausibility |
780 | 957 var borderW = $body.outerWidth(true) - $body.width(); |
886
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958 if (borderW === 0 || borderW > 100) { |
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959 console.debug("fixing border width for getFullscreenImgSize!"); |
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960 borderW = data.settings.scalerInset; |
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961 } |
780 | 962 var borderH = $body.outerHeight(true) - $body.height(); |
886
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963 if (borderH === 0 || borderH > 100) { |
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964 console.debug("fixing border height for getFullscreenImgSize!"); |
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965 borderH = 5; |
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966 } |
946 | 967 var buttonsW = 0; |
886
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968 if (data.settings.visibleButtonSets) { |
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969 // get button width from settings |
947 | 970 buttonsW = data.settings.buttonSettings[mode].buttonSetWidth * data.settings.visibleButtonSets; |
779 | 971 } |
972 // account for left/right border, body margins and additional requirements | |
886
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973 var imgW = winW - borderW - buttonsW; |
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974 var imgH = winH - borderH; |
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975 console.debug(winW, winH, 'winW:', $win.width(), 'border:', borderW, 'buttonsW:', buttonsW, 'calc:', imgW); |
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976 return geom.size(imgW, imgH); |
662 | 977 }; |
978 | |
949 | 979 /** creates HTML structure for digilib in elem |
980 * | |
981 */ | |
627 | 982 var setupScalerDiv = function (data) { |
983 var settings = data.settings; | |
647 | 984 var $elem = data.$elem; |
725 | 985 $elem.addClass('digilib'); |
728 | 986 var $img; |
987 var scalerUrl; | |
608 | 988 if (settings.interactionMode === 'fullscreen') { |
728 | 989 // fullscreen |
725 | 990 $elem.addClass('dl_fullscreen'); |
778 | 991 var imgSize = getFullscreenImgSize(data); |
650 | 992 // fitwidth/height omits destination height/width |
728 | 993 if (data.dlOpts.fitheight == null) { |
650 | 994 settings.dw = imgSize.width; |
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995 } |
728 | 996 if (data.dlOpts.fitwidth == null) { |
650 | 997 settings.dh = imgSize.height; |
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998 } |
686 | 999 scalerUrl = getScalerUrl(data); |
728 | 1000 $img = $('<img/>'); |
609 | 1001 } else { |
728 | 1002 // embedded mode -- try to keep img tag |
725 | 1003 $elem.addClass('dl_embedded'); |
728 | 1004 scalerUrl = getScalerUrl(data); |
623 | 1005 $img = $elem.find('img'); |
613
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1006 if ($img.length > 0) { |
870
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1007 var oldUrl = $img.attr('src'); |
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1008 // keep img attributes from html |
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1009 var title = $img.attr('title'); |
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1010 var alt = $img.attr('alt'); |
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1011 if (oldUrl === scalerUrl) { |
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1012 console.debug("img detach:", $img); |
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1013 $img.detach(); |
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1014 } else { |
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1015 $img = $('<img/>'); |
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1016 $img.attr("title", title); |
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1017 $img.attr("alt", alt); |
728 | 1018 } |
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1019 } else { |
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1020 $img = $('<img/>'); |
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1021 } |
608 | 1022 } |
822 | 1023 // create new inner html, keeping buttons and content marked with "keep" class |
1024 $elem.contents(":not(.keep)").remove(); | |
613
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1025 var $scaler = $('<div class="scaler"/>'); |
779 | 1026 // scaler should be the first child element? |
1027 $elem.prepend($scaler); | |
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1028 $scaler.append($img); |
622 | 1029 $img.addClass('pic'); |
649 | 1030 data.$scaler = $scaler; |
636 | 1031 data.$img = $img; |
947 | 1032 // set busy cursor |
1033 $('body').css('cursor','progress'); | |
1034 data.$scaler.css('cursor', 'progress'); | |
942 | 1035 // set up image load handler before setting the src attribute (IE bug) |
687 | 1036 $img.load(scalerImgLoadedHandler(data)); |
767 | 1037 $img.error(function () {console.error("error loading scaler image");}); |
687 | 1038 $img.attr('src', scalerUrl); |
608 | 1039 }; |
615 | 1040 |
949 | 1041 /** create arrow overlays for moving the zoomed area. |
1042 * | |
1043 */ | |
856 | 1044 var setupZoomArrows = function (data) { |
1045 var $elem = data.$elem; | |
1046 var settings = data.settings; | |
877 | 1047 var show = settings.showZoomArrows; |
856 | 1048 console.log('zoom arrows:', show); |
1049 if (!show) return; | |
877 | 1050 var mode = settings.interactionMode; |
1051 var arrowNames = settings.buttonSettings[mode].arrowSet; | |
879 | 1052 if (arrowNames == null) return; |
877 | 1053 // arrow divs are marked with class "keep" |
1054 var $arrowsDiv = $('<div class="keep arrows"/>'); | |
1055 $elem.append($arrowsDiv); | |
1056 // create all arrow buttons | |
946 | 1057 // TODO: do this without buttons plugin? |
877 | 1058 $.each(arrowNames, function(i, arrowName){ |
946 | 1059 fn.createButton(data, $arrowsDiv, arrowName); |
877 | 1060 }); |
856 | 1061 }; |
1062 | |
949 | 1063 /** size and show arrow overlays, called after scaler img is loaded. |
1064 * | |
1065 */ | |
862 | 1066 var renderZoomArrows = function (data) { |
877 | 1067 var settings = data.settings; |
1068 var $arrowsDiv = data.$elem.find('div.arrows'); | |
879 | 1069 if (isFullArea(data.zoomArea) || !settings.showZoomArrows) { |
1070 $arrowsDiv.hide(); | |
1071 return; | |
1072 } | |
1073 $arrowsDiv.show(); | |
877 | 1074 var r = geom.rectangle(data.$scaler); |
1075 // calculate arrow bar width | |
1076 var aw = settings.zoomArrowWidth; | |
1077 var minWidth = settings.zoomArrowMinWidth; | |
1078 // arrow bar width should not exceed 10% of scaler width/height | |
1079 var maxWidth = Math.min(r.width, r.height)/10; | |
1080 if (aw > maxWidth) { | |
1081 aw = maxWidth; | |
1082 if (aw < minWidth) { | |
1083 aw = minWidth; | |
1084 } | |
1085 } | |
879 | 1086 // vertical position of left/right image |
878 | 1087 var arrowData = [{ |
1088 name : 'up', | |
1089 rect : geom.rectangle(r.x, r.y, r.width, aw), | |
1090 show : canMove(data, 0, -1) | |
1091 }, { | |
1092 name : 'down', | |
879 | 1093 rect : geom.rectangle(r.x, r.y + r.height - aw, r.width, aw), |
878 | 1094 show : canMove(data, 0, 1) |
1095 }, { | |
1096 name : 'left', | |
1097 rect : geom.rectangle(r.x, r.y, aw, r.height), | |
884 | 1098 show : canMove(data, -1, 0) |
878 | 1099 }, { |
1100 name : 'right', | |
1101 rect : geom.rectangle(r.x + r.width - aw, r.y, aw, r.height), | |
1102 show : canMove(data, 1, 0) | |
1103 }]; | |
1104 // render a single zoom Arrow | |
1105 var render = function (i, item) { | |
1106 var $arrow = $arrowsDiv.find('div.button-' + item.name); | |
1107 if (item.show) { | |
1108 $arrow.show(); | |
1109 } else { | |
1110 $arrow.hide(); | |
879 | 1111 return; |
878 | 1112 } |
879 | 1113 var r = item.rect; |
1114 r.adjustDiv($arrow); | |
1115 var $a = $arrow.contents('a'); | |
1116 var $img = $a.contents('img'); | |
1117 $img.width(aw).height(aw); | |
1118 // hack for missing vertical-align | |
1119 if (item.name.match(/left|right/)) { | |
1120 var top = (r.height - $a.height())/2; | |
1121 $a.css({'top' : top}); // position : 'relative' | |
1122 } | |
878 | 1123 }; |
1124 $.each(arrowData, render); | |
862 | 1125 }; |
1126 | |
949 | 1127 /** creates HTML structure for the about view in elem |
1128 * | |
1129 */ | |
628
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1130 var setupAboutDiv = function (data) { |
647 | 1131 var $elem = data.$elem; |
628
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1132 var settings = data.settings; |
625 | 1133 var $aboutDiv = $('<div class="about" style="display:none"/>'); |
886
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1134 var $header = $('<p>Digilib Image Viewer</p>'); |
616 | 1135 var $link = $('<a/>'); |
1136 var $logo = $('<img class="logo" title="digilib"/>'); | |
1137 var $content = $('<p/>'); | |
1138 $elem.append($aboutDiv); | |
1139 $aboutDiv.append($header); | |
1140 $aboutDiv.append($link); | |
1141 $aboutDiv.append($content); | |
1142 $link.append($logo); | |
913
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1143 logoUrl = settings.logoUrl; |
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1144 // make relative logoUrl absolute |
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1145 if (logoUrl.charAt(0) !== '/' && logoUrl.substring(0,3) !== 'http') { |
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1146 logoUrl = settings.digilibBaseUrl + '/' + logoUrl; |
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1147 } |
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|
1148 $logo.attr('src', logoUrl); |
635 | 1149 $link.attr('href', settings.homeUrl); |
616 | 1150 $content.text('Version: ' + settings.version); |
775 | 1151 data.$aboutDiv = $aboutDiv; |
635 | 1152 // click hides |
917 | 1153 $aboutDiv.on('click.digilib', function () { |
775 | 1154 actions['showAboutDiv'](data, false); |
710 | 1155 }); |
634 | 1156 }; |
1157 | |
949 | 1158 /** shows some window e.g. 'about' (toggle visibility if show is null) |
1159 * | |
1160 */ | |
635 | 1161 var showDiv = function (isVisible, $div, show) { |
645 | 1162 if (show == null) { |
635 | 1163 // toggle visibility |
1164 isVisible = !isVisible; | |
1165 } else { | |
1166 // set visibility | |
1167 isVisible = show; | |
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|
1168 } |
635 | 1169 if (isVisible) { |
1170 $div.fadeIn(); | |
1171 } else { | |
1172 $div.fadeOut(); | |
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1173 } |
635 | 1174 return isVisible; |
634 | 1175 }; |
616 | 1176 |
949 | 1177 /** Create Transform from zoom area and image size and parameters. |
1178 * Returns Transform between normalized coordinates and image pixel coordinates. | |
1179 */ | |
772
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1180 var getImgTrafo = function ($img, area, rot, hmir, vmir, mode, data) { |
658
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1181 var picrect = geom.rectangle($img); |
949 | 1182 // handle pixel-by-pixel and original-size modes |
763
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1183 if (mode != null) { |
772
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1184 var imgInfo = data.imgInfo; |
763
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1185 if (mode === 'pixel') { |
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1186 // scaler mo=clip - image area size does not come from ww, wh |
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1187 if (imgInfo != null) { |
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1188 area.width = picrect.width / imgInfo.width; |
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1189 area.height = picrect.height / imgInfo.height; |
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1190 } else { |
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|
1191 console.error("No image info for pixel mode!"); |
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|
1192 } |
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|
1193 } |
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1194 if (mode === 'size') { |
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|
1195 // scaler mo=osize - image area size does not come from ww, wh |
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1196 if (imgInfo != null) { |
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1197 var ddpi = parseFloat(data.settings.ddpi); |
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1198 area.width = (picrect.width / ddpi) / (imgInfo.width / imgInfo.dpi_x); |
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1199 area.height = (picrect.height / ddpi) / (imgInfo.height / imgInfo.dpi_y); |
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|
1200 } else { |
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|
1201 console.error("No image info for original size mode!"); |
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|
1202 } |
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|
1203 } |
763
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|
1204 } |
658
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|
1205 var trafo = geom.transform(); |
675 | 1206 // move zoom area offset to center |
658
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|
1207 trafo.concat(trafo.getTranslation(geom.position(-area.x, -area.y))); |
675 | 1208 // scale zoom area size to [1,1] |
658
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|
1209 trafo.concat(trafo.getScale(geom.size(1/area.width, 1/area.height))); |
675 | 1210 // rotate and mirror (around transformed image center i.e. [0.5,0.5]) |
1211 if (rot || hmir || vmir) { | |
1212 // move [0.5,0.5] to center | |
1213 trafo.concat(trafo.getTranslation(geom.position(-0.5, -0.5))); | |
1214 if (hmir) { | |
1215 // mirror about center | |
1216 trafo.concat(trafo.getMirror('y')); | |
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|
1217 } |
675 | 1218 if (vmir) { |
1219 // mirror about center | |
1220 trafo.concat(trafo.getMirror('x')); | |
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|
1221 } |
675 | 1222 if (rot) { |
1223 // rotate around center | |
1224 trafo.concat(trafo.getRotation(parseFloat(rot))); | |
713
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|
1225 } |
675 | 1226 // move back |
1227 trafo.concat(trafo.getTranslation(geom.position(0.5, 0.5))); | |
713
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|
1228 } |
664
d5a5ee4cbf04
work on getting transformation to work with rotation (currently still doesn't)
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diff
changeset
|
1229 // scale to screen position and size |
658
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|
1230 trafo.concat(trafo.getScale(picrect)); |
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|
1231 trafo.concat(trafo.getTranslation(picrect)); |
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|
1232 return trafo; |
655 | 1233 }; |
678
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first step at dragging birdview zoom indicator around
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|
1234 |
949 | 1235 /** update current scaler image transform |
1236 */ | |
767 | 1237 var updateImgTrafo = function (data) { |
1238 var $img = data.$img; | |
895 | 1239 if ($img == null) |
1240 return; | |
1241 var imgLoaded = $.browser.msie | |
949 | 1242 ? $img.prop('width') > 0 |
1243 : $img.prop('complete'); | |
950
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much nicer implementation of preview for scrolling and zooming.
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|
1244 if (imgLoaded || data.hasPreviewBg) { |
949 | 1245 // create Transform from current zoomArea and image size |
1246 data.imgTrafo = getImgTrafo($img, data.zoomArea, data.settings.rot, | |
1247 data.scalerFlags.hmir, data.scalerFlags.vmir, | |
1248 data.scaleMode, data); | |
1249 console.debug("imgTrafo=", data.imgTrafo); | |
1250 } | |
767 | 1251 }; |
775 | 1252 |
949 | 1253 /** return handler for load event of scaler img |
1254 * (necessary for closure with data object) | |
1255 */ | |
767 | 1256 var scalerImgLoadedHandler = function (data) { |
1257 return function () { | |
1258 var $img = $(this); | |
1259 console.debug("scaler img loaded=",$img); | |
1260 var $scaler = data.$scaler; | |
760
f0be4432f515
primitive plugin extension mechanism - unsure how useful this is
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755
diff
changeset
|
1261 var imgRect = geom.rectangle($img); |
931 | 1262 data.imgRect = imgRect; |
934 | 1263 // reset busy cursor |
1264 $('body').css('cursor', 'auto'); | |
1265 $scaler.css('cursor', 'auto'); | |
733 | 1266 // adjust scaler div size |
738 | 1267 imgRect.adjustDiv($scaler); |
715 | 1268 // show image in case it was hidden (for example in zoomDrag) |
733 | 1269 $img.css('visibility', 'visible'); |
952
e3dc84cbb766
disable forced load event causing problem with firefox.
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951
diff
changeset
|
1270 $scaler.css({'opacity' : '1', 'background' : 'transparent'}); |
950
164d69e2c481
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949
diff
changeset
|
1271 data.hasPreviewBg = false; |
767 | 1272 // update display (render marks, etc.) |
1273 updateDisplay(data); | |
658
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|
1274 }; |
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split bird's view code in two more parts, analog to scaler-img code.
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|
1275 }; |
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|
1276 |
949 | 1277 /** handle imageInfo loaded event |
1278 * | |
1279 */ | |
797 | 1280 var handleImageInfo = function (evt, json) { |
917 | 1281 console.debug("handleImageInfo:", json); |
797 | 1282 var data = this; |
1283 updateDisplay(data); | |
1284 }; | |
813 | 1285 |
949 | 1286 /** handle changeZoomArea event |
1287 * | |
1288 */ | |
942 | 1289 var handleChangeZoomArea = function (evt, newZa) { |
1290 console.debug("handleChangeZoomArea:", newZa); | |
1291 var data = this; | |
950
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diff
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|
1292 data.$elem.find(".overlay").hide(); // hide all overlays (marks/regions) |
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diff
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|
1293 setPreviewBg(data, newZa); |
942 | 1294 }; |
1295 | |
1296 | |
949 | 1297 /** place marks on the image |
1298 * | |
1299 */ | |
633 | 1300 var renderMarks = function (data) { |
767 | 1301 if (data.$img == null || data.imgTrafo == null) return; |
850
47a6b93bde43
always show html-defined regions. wrong pos still not fixed
hertzhaft
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849
diff
changeset
|
1302 console.debug("renderMarks: img=",data.$img," imgtrafo=",data.imgTrafo); |
647 | 1303 var $elem = data.$elem; |
643 | 1304 var marks = data.marks; |
742
2b6d3ef57d68
fixed problem with setmark, zoomarea and zoomDrag handlers.
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diff
changeset
|
1305 // clear marks |
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fixed problem with setmark, zoomarea and zoomDrag handlers.
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changeset
|
1306 $elem.find('div.mark').remove(); |
633 | 1307 for (var i = 0; i < marks.length; i++) { |
1308 var mark = marks[i]; | |
643 | 1309 if (data.zoomArea.containsPosition(mark)) { |
633 | 1310 var mpos = data.imgTrafo.transform(mark); |
851 | 1311 console.debug("renderMarks: pos=",mpos); |
633 | 1312 // create mark |
813 | 1313 var html = '<div class="mark overlay">'+(i+1)+'</div>'; |
633 | 1314 var $mark = $(html); |
850
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always show html-defined regions. wrong pos still not fixed
hertzhaft
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849
diff
changeset
|
1315 $mark.attr("id", "digilib-mark-"+(i+1)); |
633 | 1316 $elem.append($mark); |
742
2b6d3ef57d68
fixed problem with setmark, zoomarea and zoomDrag handlers.
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changeset
|
1317 mpos.adjustDiv($mark); |
713
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|
1318 } |
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|
1319 } |
633 | 1320 }; |
655 | 1321 |
949 | 1322 /** zoom by the given factor. |
1323 * | |
1324 */ | |
643 | 1325 var zoomBy = function(data, factor) { |
1326 var area = data.zoomArea; | |
1327 var newarea = area.copy(); | |
1328 // scale | |
1329 newarea.width /= factor; | |
1330 newarea.height /= factor; | |
1331 // and recenter | |
1332 newarea.x -= 0.5 * (newarea.width - area.width); | |
1333 newarea.y -= 0.5 * (newarea.height - area.height); | |
735
790a7673bef0
improved some embedded buttons; fixed reset function
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733
diff
changeset
|
1334 newarea = FULL_AREA.fit(newarea); |
950
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diff
changeset
|
1335 setZoomArea(data, newarea); |
644
ee8ccd84c5f8
reload doesn't take list of changed parameters any more
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diff
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|
1336 redisplay(data); |
643 | 1337 }; |
1338 | |
949 | 1339 /** add a mark where clicked. |
1340 * | |
1341 */ | |
647 | 1342 var setMark = function (data) { |
649 | 1343 var $scaler = data.$scaler; |
742
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fixed problem with setmark, zoomarea and zoomDrag handlers.
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|
1344 // unbind other handler |
917 | 1345 $scaler.off(".dlZoomDrag"); |
647 | 1346 // start event capturing |
742
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fixed problem with setmark, zoomarea and zoomDrag handlers.
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changeset
|
1347 $scaler.one('mousedown.dlSetMark', function (evt) { |
647 | 1348 // event handler adding a new mark |
742
2b6d3ef57d68
fixed problem with setmark, zoomarea and zoomDrag handlers.
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diff
changeset
|
1349 console.log("setmark at=", evt); |
672
7f7536a5b6d9
image transform works now under rotation!!! (at least for multiples of 90deg)
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671
diff
changeset
|
1350 var mpos = geom.position(evt); |
647 | 1351 var pos = data.imgTrafo.invtransform(mpos); |
1352 data.marks.push(pos); | |
1353 redisplay(data); | |
742
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fixed problem with setmark, zoomarea and zoomDrag handlers.
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|
1354 return false; |
647 | 1355 }); |
1356 }; | |
668 | 1357 |
949 | 1358 /** zoom to the area around two clicked points. |
1359 * | |
1360 */ | |
654 | 1361 var zoomArea = function(data) { |
1362 $elem = data.$elem; | |
1363 $scaler = data.$scaler; | |
1364 var pt1, pt2; | |
1365 var $zoomDiv = $('<div class="zoomrect" style="display:none"/>'); | |
1366 $elem.append($zoomDiv); | |
775 | 1367 // $zoomDiv.css(data.settings.zoomrectStyle); |
654 | 1368 var picRect = geom.rectangle($scaler); |
1369 // FIX ME: is there a way to query the border width from CSS info? | |
1370 // rect.x -= 2; // account for overlay borders | |
1371 // rect.y -= 2; | |
1372 | |
1373 var zoomStart = function (evt) { | |
1374 pt1 = geom.position(evt); | |
1375 // setup and show zoom div | |
738 | 1376 pt1.adjustDiv($zoomDiv); |
668 | 1377 $zoomDiv.width(0).height(0); |
654 | 1378 $zoomDiv.show(); |
1379 // register events | |
917 | 1380 $elem.on("mousemove.dlZoomArea", zoomMove); |
1381 $elem.on("mouseup.dlZoomArea", zoomEnd); | |
654 | 1382 return false; |
1383 }; | |
668 | 1384 |
741 | 1385 // mouse move handler |
1386 var zoomMove = function (evt) { | |
1387 pt2 = geom.position(evt); | |
1388 var rect = geom.rectangle(pt1, pt2); | |
1389 rect.clipTo(picRect); | |
1390 // update zoom div | |
1391 rect.adjustDiv($zoomDiv); | |
1392 return false; | |
1393 }; | |
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ad483c008159
move birdview zoom indicator along with zoom drag
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diff
changeset
|
1394 |
654 | 1395 // mouseup handler: end moving |
1396 var zoomEnd = function (evt) { | |
1397 pt2 = geom.position(evt); | |
1398 // assume a click and continue if the area is too small | |
1399 var clickRect = geom.rectangle(pt1, pt2); | |
710 | 1400 if (clickRect.getArea() <= 5) return false; |
654 | 1401 // hide zoom div |
1402 $zoomDiv.remove(); | |
1403 // unregister events | |
917 | 1404 $elem.off("mousemove.dlZoomArea", zoomMove); |
1405 $elem.off("mouseup.dlZoomArea", zoomEnd); | |
654 | 1406 // clip and transform |
1407 clickRect.clipTo(picRect); | |
1408 var area = data.imgTrafo.invtransform(clickRect); | |
951
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preview for ZoomArea. shows distortions when changing aspect ratio.
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diff
changeset
|
1409 setZoomArea(data, area); |
654 | 1410 // zoomed is always fit |
1411 data.settings.ws = 1; | |
738 | 1412 delete data.dlOpts.fitwidth; |
1413 delete data.dlOpts.fitheight; | |
654 | 1414 redisplay(data); |
1415 return false; | |
1416 }; | |
668 | 1417 |
742
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fixed problem with setmark, zoomarea and zoomDrag handlers.
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changeset
|
1418 // clear old handler (also ZoomDrag) |
917 | 1419 $scaler.off('.dlZoomArea'); |
1420 $scaler.off(".dlZoomDrag"); | |
1421 $elem.off('.dlZoomArea'); | |
654 | 1422 // bind start zoom handler |
738 | 1423 $scaler.one('mousedown.dlZoomArea', zoomStart); |
654 | 1424 }; |
647 | 1425 |
950
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much nicer implementation of preview for scrolling and zooming.
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|
1426 /** set preview background. |
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diff
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|
1427 * optional newZoomArea scales and moves background to preview. |
949 | 1428 */ |
950
164d69e2c481
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949
diff
changeset
|
1429 var setPreviewBg = function(data, newZoomArea) { |
746
2e9a48dc7a0c
move zoom-drag background along with birdview indicator
hertzhaft
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745
diff
changeset
|
1430 var $scaler = data.$scaler; |
2e9a48dc7a0c
move zoom-drag background along with birdview indicator
hertzhaft
parents:
745
diff
changeset
|
1431 var $img = data.$img; |
950
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1432 var imgTrafo = data.imgTrafo; |
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1433 var scalerPos = geom.position($scaler); |
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1434 var bgRect = null; |
746
2e9a48dc7a0c
move zoom-drag background along with birdview indicator
hertzhaft
parents:
745
diff
changeset
|
1435 // hide the scaler img, show background of div instead |
2e9a48dc7a0c
move zoom-drag background along with birdview indicator
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parents:
745
diff
changeset
|
1436 $img.css('visibility', 'hidden'); |
918
f7869186ccb2
use current size background as well as scaled full-size background when dragging
robcast
parents:
917
diff
changeset
|
1437 // use current image as first background |
746
2e9a48dc7a0c
move zoom-drag background along with birdview indicator
hertzhaft
parents:
745
diff
changeset
|
1438 var scalerCss = { |
950
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1439 'background-image' : 'url(' + $img.attr('src') + ')', |
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1440 'background-repeat' : 'no-repeat', |
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
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949
diff
changeset
|
1441 'background-position' : '0px 0px', |
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
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parents:
949
diff
changeset
|
1442 'opacity' : '0.7', |
164d69e2c481
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diff
changeset
|
1443 'cursor' : 'move' |
164d69e2c481
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diff
changeset
|
1444 }; |
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
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diff
changeset
|
1445 if (newZoomArea != null) { |
953
3d5e7458f9ae
fixed birdseye region positioning after layout reflow.
robcast
parents:
952
diff
changeset
|
1446 // check if aspect ratio has changed |
3d5e7458f9ae
fixed birdseye region positioning after layout reflow.
robcast
parents:
952
diff
changeset
|
1447 if (newZoomArea.getAspect() !== data.zoomArea.getAspect()) { |
3d5e7458f9ae
fixed birdseye region positioning after layout reflow.
robcast
parents:
952
diff
changeset
|
1448 console.debug("aspect ratio changed!"); |
954 | 1449 // what now? |
953
3d5e7458f9ae
fixed birdseye region positioning after layout reflow.
robcast
parents:
952
diff
changeset
|
1450 } |
3d5e7458f9ae
fixed birdseye region positioning after layout reflow.
robcast
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952
diff
changeset
|
1451 // get transform for new zoomArea |
950
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
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949
diff
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|
1452 imgTrafo = getImgTrafo($img, newZoomArea, data.settings.rot, |
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robcast
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diff
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|
1453 data.scalerFlags.hmir, data.scalerFlags.vmir, |
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
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949
diff
changeset
|
1454 data.scaleMode, data); |
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
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949
diff
changeset
|
1455 // for new background coordinates transform old zoomArea with new Transform |
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
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949
diff
changeset
|
1456 bgRect = imgTrafo.transform(data.zoomArea); |
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
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949
diff
changeset
|
1457 // correct offset because background is relative |
164d69e2c481
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robcast
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949
diff
changeset
|
1458 bgRect.addPosition(scalerPos.neg()); |
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
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949
diff
changeset
|
1459 // position background |
164d69e2c481
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949
diff
changeset
|
1460 scalerCss['background-position'] = Math.round(bgRect.x) + 'px '+ Math.round(bgRect.y) + 'px'; |
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much nicer implementation of preview for scrolling and zooming.
robcast
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949
diff
changeset
|
1461 } |
746
2e9a48dc7a0c
move zoom-drag background along with birdview indicator
hertzhaft
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diff
changeset
|
1462 if (data.hasBgSize) { |
950
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1463 // scale background using CSS3-background-size |
164d69e2c481
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diff
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|
1464 if (bgRect != null && (bgRect.height < data.settings.maxBgSize && bgRect.width < data.settings.maxBgSize)) { |
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diff
changeset
|
1465 scalerCss[data.bgSizeName] = Math.round(bgRect.width) + 'px ' + Math.round(bgRect.height) + 'px'; |
944 | 1466 } else { |
1467 scalerCss[data.bgSizeName] = 'auto'; | |
1468 } | |
950
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robcast
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949
diff
changeset
|
1469 // additional full-size background using CSS3 |
164d69e2c481
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robcast
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diff
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|
1470 fullRect = imgTrafo.transform(FULL_AREA); |
746
2e9a48dc7a0c
move zoom-drag background along with birdview indicator
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parents:
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diff
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|
1471 if (fullRect.height < data.settings.maxBgSize && fullRect.width < data.settings.maxBgSize) { |
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move zoom-drag background along with birdview indicator
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parents:
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diff
changeset
|
1472 // correct offset because background is relative |
751
00b7857f07f5
zoom-drag background follows birdZoom also in embedded mode (still imprecise)
hertzhaft
parents:
748
diff
changeset
|
1473 fullRect.addPosition(scalerPos.neg()); |
954 | 1474 var url = getPreviewImgUrl(data); |
950
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much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1475 // add second background url, size and position |
918
f7869186ccb2
use current size background as well as scaled full-size background when dragging
robcast
parents:
917
diff
changeset
|
1476 scalerCss['background-image'] += ', url(' + url + ')'; |
950
164d69e2c481
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robcast
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949
diff
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|
1477 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.
robcast
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949
diff
changeset
|
1478 scalerCss['background-position'] += ', ' + Math.round(fullRect.x) + 'px '+ Math.round(fullRect.y) + 'px'; |
746
2e9a48dc7a0c
move zoom-drag background along with birdview indicator
hertzhaft
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diff
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|
1479 } |
918
f7869186ccb2
use current size background as well as scaled full-size background when dragging
robcast
parents:
917
diff
changeset
|
1480 } |
f7869186ccb2
use current size background as well as scaled full-size background when dragging
robcast
parents:
917
diff
changeset
|
1481 $scaler.css(scalerCss); |
942 | 1482 data.hasPreviewBg = true; |
929
e881ab1c2f47
first step to "preview" like zoom-drag for more operations
robcast
parents:
928
diff
changeset
|
1483 }; |
e881ab1c2f47
first step to "preview" like zoom-drag for more operations
robcast
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928
diff
changeset
|
1484 |
949 | 1485 /** setup handlers for dragging the zoomed image. |
1486 * | |
1487 */ | |
705 | 1488 var setupZoomDrag = function(data) { |
942 | 1489 var startPos, delta; |
733 | 1490 var $document = $(document); |
795 | 1491 var $data = $(data); |
705 | 1492 var $elem = data.$elem; |
1493 var $scaler = data.$scaler; | |
1494 var $img = data.$img; | |
710 | 1495 |
733 | 1496 // drag the image and load a new detail on mouse up |
705 | 1497 var dragStart = function (evt) { |
944 | 1498 // cancel if not left-click |
1499 if (evt.which != 1) return; | |
813 | 1500 console.debug("dragstart at=", evt); |
737
7c93bdbb5153
setup zoomdrag even when image is not initially zoomed
hertzhaft
parents:
736
diff
changeset
|
1501 // don't start dragging if not zoomed |
7c93bdbb5153
setup zoomdrag even when image is not initially zoomed
hertzhaft
parents:
736
diff
changeset
|
1502 if (isFullArea(data.zoomArea)) return false; |
813 | 1503 $elem.find(".overlay").hide(); // hide all overlays (marks/regions) |
733 | 1504 startPos = geom.position(evt); |
741 | 1505 delta = null; |
746
2e9a48dc7a0c
move zoom-drag background along with birdview indicator
hertzhaft
parents:
745
diff
changeset
|
1506 // set low res background immediately on mousedown |
950
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
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949
diff
changeset
|
1507 setPreviewBg(data); |
917 | 1508 $document.on("mousemove.dlZoomDrag", dragMove); |
1509 $document.on("mouseup.dlZoomDrag", dragEnd); | |
713
c1fa722c570e
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parents:
711
diff
changeset
|
1510 return false; |
705 | 1511 }; |
745
ad483c008159
move birdview zoom indicator along with zoom drag
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parents:
744
diff
changeset
|
1512 |
733 | 1513 // mousemove handler: drag zoomed image |
705 | 1514 var dragMove = function (evt) { |
1515 var pos = geom.position(evt); | |
741 | 1516 delta = startPos.delta(pos); |
807
1b1728926534
geometry: overlapsRect() plus some comment clarifications
hertzhaft
parents:
799
diff
changeset
|
1517 // send message event with current zoom position |
745
ad483c008159
move birdview zoom indicator along with zoom drag
hertzhaft
parents:
744
diff
changeset
|
1518 var za = geom.rectangle($img); |
ad483c008159
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hertzhaft
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744
diff
changeset
|
1519 za.addPosition(delta.neg()); |
947 | 1520 // transform back |
1521 var newArea = data.imgTrafo.invtransform(za); | |
1522 $data.trigger('changeZoomArea', newArea); | |
705 | 1523 return false; |
1524 }; | |
710 | 1525 |
733 | 1526 // mouseup handler: reload zoomed image in new position |
705 | 1527 var dragEnd = function (evt) { |
739 | 1528 $scaler.css('cursor', 'auto'); |
917 | 1529 $document.off("mousemove.dlZoomDrag", dragMove); |
1530 $document.off("mouseup.dlZoomDrag", dragEnd); | |
733 | 1531 if (delta == null || delta.distance() < 2) { |
1532 // no movement | |
1533 $img.css('visibility', 'visible'); | |
741 | 1534 $scaler.css({'opacity' : '1', 'background-image' : 'none'}); |
944 | 1535 data.hasPreviewBg = false; |
767 | 1536 // unhide marks |
1537 data.$elem.find('div.mark').show(); | |
813 | 1538 $(data).trigger('redisplay'); |
733 | 1539 return false; |
1540 } | |
1541 // get old zoom area (screen coordinates) | |
741 | 1542 var za = geom.rectangle($img); |
733 | 1543 // move |
741 | 1544 za.addPosition(delta.neg()); |
733 | 1545 // transform back |
1546 var newArea = data.imgTrafo.invtransform(za); | |
735
790a7673bef0
improved some embedded buttons; fixed reset function
hertzhaft
parents:
733
diff
changeset
|
1547 data.zoomArea = FULL_AREA.fit(newArea); |
708
120ace160386
img reload works for fullscreen, but somehow not precise
hertzhaft
parents:
707
diff
changeset
|
1548 redisplay(data); |
705 | 1549 return false; |
1550 }; | |
735
790a7673bef0
improved some embedded buttons; fixed reset function
hertzhaft
parents:
733
diff
changeset
|
1551 |
733 | 1552 // clear old handler |
917 | 1553 $document.off(".dlZoomDrag"); |
1554 $scaler.off(".dlZoomDrag"); | |
742
2b6d3ef57d68
fixed problem with setmark, zoomarea and zoomDrag handlers.
robcast
parents:
741
diff
changeset
|
1555 if (! isFullArea(data.zoomArea)) { |
2b6d3ef57d68
fixed problem with setmark, zoomarea and zoomDrag handlers.
robcast
parents:
741
diff
changeset
|
1556 // set handler |
917 | 1557 $scaler.on("mousedown.dlZoomDrag", dragStart); |
742
2b6d3ef57d68
fixed problem with setmark, zoomarea and zoomDrag handlers.
robcast
parents:
741
diff
changeset
|
1558 } |
705 | 1559 }; |
1560 | |
950
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1561 /** set the zoom area. |
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1562 * also triggers "changeZoomArea" event. |
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1563 */ |
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1564 var setZoomArea = function(data, za) { |
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1565 $(data).trigger('changeZoomArea', za); |
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1566 data.oldZoomArea = data.zoomArea; |
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1567 data.zoomArea = za; |
164d69e2c481
much nicer implementation of preview for scrolling and zooming.
robcast
parents:
949
diff
changeset
|
1568 }; |
164d69e2c481
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robcast
parents:
949
diff
changeset
|
1569 |
949 | 1570 /** get image quality as a number (0..2). |
1571 * | |
1572 */ | |
703 | 1573 var getQuality = function (data) { |
1574 var flags = data.scalerFlags; | |
1575 var q = flags.q2 || flags.q1 || 'q0'; // assume q0 as default | |
1576 return parseInt(q[1], 10); | |
706 | 1577 }; |
703 | 1578 |
949 | 1579 /** set image quality as a number (0..2). |
1580 * | |
1581 */ | |
703 | 1582 var setQuality = function (data, qual) { |
1583 var flags = data.scalerFlags; | |
1584 // clear flags | |
1585 for (var i = 0; i < 3; ++i) { | |
1586 delete flags['q'+i]; | |
713
c1fa722c570e
more cosmetics: added options to validate with http://www.jslint.com
robcast
parents:
711
diff
changeset
|
1587 } |
703 | 1588 flags['q'+qual] = 'q'+qual; |
706 | 1589 }; |
710 | 1590 |
949 | 1591 /** get image scale mode (screen, pixel, size). |
1592 * | |
1593 */ | |
761
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1594 var getScaleMode = function (data) { |
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1595 if (data.scalerFlags.clip != null) { |
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1596 return 'pixel'; |
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1597 } else if (data.scalerFlags.osize != null) { |
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1598 return 'size'; |
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1599 } |
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1600 // mo=fit is default |
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1601 return 'screen'; |
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1602 }; |
775 | 1603 |
949 | 1604 /** set image scale mode (screen, pixel, size). |
1605 * | |
1606 */ | |
761
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1607 var setScaleMode = function (data, mode) { |
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1608 delete data.scalerFlags.fit; |
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1609 delete data.scalerFlags.clip; |
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1610 delete data.scalerFlags.osize; |
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1611 if (mode === 'pixel') { |
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1612 data.scalerFlags.clip = 'clip'; |
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1613 } else if (mode === 'size') { |
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1614 data.scalerFlags.osize = 'osize'; |
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1615 } |
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1616 // mo=fit is default |
16778bd2de7c
added setScaleMode. no compensation for change in scaling yet.
robcast
parents:
760
diff
changeset
|
1617 }; |
775 | 1618 |
949 | 1619 /** sets a key to a value (relative values with +/- if relative=true). |
1620 * | |
1621 */ | |
650 | 1622 var setNumValue = function(settings, key, value) { |
716 | 1623 if (value == null) return null; |
949 | 1624 if ($.isNumeric(value)) { |
713
c1fa722c570e
more cosmetics: added options to validate with http://www.jslint.com
robcast
parents:
711
diff
changeset
|
1625 settings[key] = value; |
c1fa722c570e
more cosmetics: added options to validate with http://www.jslint.com
robcast
parents:
711
diff
changeset
|
1626 return value; |
c1fa722c570e
more cosmetics: added options to validate with http://www.jslint.com
robcast
parents:
711
diff
changeset
|
1627 } |
c1fa722c570e
more cosmetics: added options to validate with http://www.jslint.com
robcast
parents:
711
diff
changeset
|
1628 var sign = value[0]; |
650 | 1629 if (sign === '+' || sign === '-') { |
1630 if (settings[key] == null) { | |
651
694bdb86cbad
renamed 'actions' to 'buttons' and 'methods' to 'actions'
robcast
parents:
650
diff
changeset
|
1631 // this isn't perfect but still... |
650 | 1632 settings[key] = 0; |
713
c1fa722c570e
more cosmetics: added options to validate with http://www.jslint.com
robcast
parents:
711
diff
changeset
|
1633 } |
650 | 1634 settings[key] = parseFloat(settings[key]) + parseFloat(value); |
1635 } else { | |
1636 settings[key] = value; | |
713
c1fa722c570e
more cosmetics: added options to validate with http://www.jslint.com
robcast
parents:
711
diff
changeset
|
1637 } |
650 | 1638 return settings[key]; |
1639 }; | |
655 | 1640 |
949 | 1641 /** return width of border on $elem. |
1642 * assumes equal border width on all sides. | |
1643 */ | |
775 | 1644 var getBorderWidth = function($elem) { |
1645 var border = $elem.outerWidth() - $elem.width(); | |
1646 return border/2; | |
1647 }; | |
1648 | |
949 | 1649 /** return if the current zoomarea can be moved further. |
1650 * | |
1651 */ | |
878 | 1652 var canMove = function(data, movx, movy) { |
1653 var za = data.zoomArea; | |
1654 if (isFullArea(za)) return false; | |
1655 var x2 = za.x + za.width; | |
1656 var y2 = za.y + za.height; | |
949 | 1657 return (((movx < 0) && (za.x > 0)) |
878 | 1658 || ((movx > 0) && (x2 < 1.0)) |
1659 || ((movy < 0) && (za.y > 0)) | |
949 | 1660 || ((movy > 0) && (y2 < 1.0))); |
878 | 1661 }; |
1662 | |
949 | 1663 /** return if area is maximal. |
1664 * | |
1665 */ | |
795 | 1666 var isFullArea = function (area) { |
659 | 1667 return (area.width === 1.0) && (area.height === 1.0); |
655 | 1668 }; |
1669 | |
949 | 1670 /** return number with reduced precision. |
1671 * ("crop senseless precision") | |
1672 */ | |
631 | 1673 var cropFloat = function (x) { |
637 | 1674 return parseInt(10000 * x, 10) / 10000; |
631 | 1675 }; |
655 | 1676 |
949 | 1677 /** return string from number with reduced precision. |
1678 * | |
1679 */ | |
813 | 1680 var cropFloatStr = function (x) { |
1681 return cropFloat(x).toString(); | |
1682 }; | |
1683 | |
692 | 1684 // fallback for console.log calls |
1685 if (customConsole) { | |
1686 var logFunction = function(type) { | |
1687 return function(){ | |
1688 var $debug = $('#debug'); // debug div | |
1689 if (!$debug) return; | |
1690 var args = Array.prototype.slice.call(arguments); | |
1691 var argtext = args.join(' '); | |
1692 var $logDiv = $('<div/>'); | |
1693 $logDiv.addClass(type); | |
1694 $logDiv.text(argtext); | |
1695 $debug.append($logDiv); | |
1696 }; | |
1697 }; | |
1698 console.log = logFunction('_log'); | |
1699 console.debug = logFunction('_debug'); | |
1700 console.error = logFunction('_error'); | |
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1701 } |
692 | 1702 |
949 | 1703 /** functions to export to plugins. |
1704 */ | |
787 | 1705 fn = { |
791 | 1706 geometry : geom, |
787 | 1707 parseQueryString : parseQueryString, |
1708 getScalerUrl : getScalerUrl, | |
1709 getParamString : getParamString, | |
1710 getDigilibUrl : getDigilibUrl, | |
1711 unpackParams : unpackParams, | |
1712 packParams : packParams, | |
822 | 1713 packArea : packArea, |
1714 packMarks : packMarks, | |
1715 packScalerFlags : packScalerFlags, | |
795 | 1716 storeOptions : storeOptions, |
787 | 1717 redisplay : redisplay, |
1718 updateDisplay : updateDisplay, | |
791 | 1719 showDiv : showDiv, |
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1720 setPreviewBg : setPreviewBg, |
787 | 1721 getImgTrafo : getImgTrafo, |
1722 getQuality : getQuality, | |
1723 setQuality : setQuality, | |
1724 getScaleMode : getScaleMode, | |
1725 setScaleMode : setScaleMode, | |
878 | 1726 canMove : canMove, |
795 | 1727 isFullArea : isFullArea, |
813 | 1728 getBorderWidth : getBorderWidth, |
1729 cropFloat : cropFloat, | |
1730 cropFloatStr : cropFloatStr | |
787 | 1731 }; |
788 | 1732 |
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1733 // hook digilib plugin into jquery |
785 | 1734 $.fn.digilib = function (action) { |
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1735 // plugin extension mechanism, called when the plugins' code is read |
786 | 1736 if (action === 'plugin') { |
1737 var plugin = arguments[1]; | |
1738 // each plugin needs a name | |
1739 if (plugin.name != null) { | |
1740 plugins[plugin.name] = plugin; | |
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1741 // share common objects |
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1742 plugin.defaults = defaults; |
947 | 1743 plugin.buttons = buttons; |
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1744 plugin.actions = actions; |
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1745 plugin.fn = fn; |
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1746 plugin.plugins = plugins; |
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1747 // and install |
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1748 if (typeof plugin.install === 'function') { |
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1749 plugin.install(plugin); |
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1750 } |
786 | 1751 } |
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1752 // plugins will be initialised when action.init is called |
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1753 } else if (actions[action]) { |
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1754 // call action on this with the remaining arguments (inserting data as first argument) |
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1755 var $elem = $(this); |
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1756 var data = $elem.data('digilib'); |
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1757 var args = Array.prototype.slice.call(arguments, 1); |
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1758 args.unshift(data); |
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1759 return actions[action].apply(this, args); |
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1760 } else if (typeof action === 'object' || !action) { |
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1761 // call init on the digilib jQuery object |
651
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1762 return actions.init.apply(this, arguments); |
605 | 1763 } else { |
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1764 $.error('action ' + action + ' does not exist on jQuery.digilib'); |
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1765 } |
605 | 1766 }; |
692 | 1767 |
604 | 1768 })(jQuery); |