Mercurial > hg > digilib
annotate client/digitallibrary/jquery/jquery.digilib.js @ 619:1035891fb6f1 jquery
Merge with HEAD
| author | robcast |
|---|---|
| date | Mon, 17 Jan 2011 22:10:12 +0100 |
| parents | 8bdc9659ecfa 8b1e255b617c |
| children | b930fa64c684 |
| rev | line source |
|---|---|
| 597 | 1 /* |
| 2 * digilib jQuery plugin | |
| 3 * | |
| 4 */ | |
| 5 | |
| 6 (function($) { | |
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7 var actions = { |
| 603 | 8 reference : { |
| 9 onclick : "javascript:getRefWin()", | |
| 10 tooltip : "get a reference URL", | |
| 11 img : "reference.png" | |
| 12 }, | |
| 13 zoomin : { | |
| 14 onclick : "javascript:dl.zoomBy(1.4)", | |
| 15 tooltip : "zoom in", | |
| 16 img : "zoom-in.png" | |
| 17 }, | |
| 18 zoomout : { | |
| 19 onclick : "javascript:zoomBy(0.7)", | |
| 20 tooltip : "zoom out", | |
| 21 img : "zoom-out.png" | |
| 22 }, | |
| 23 zoomarea : { | |
| 24 onclick : "javascript:zoomArea()", | |
| 25 tooltip : "zoom area", | |
| 26 img : "zoom-area.png" | |
| 27 }, | |
| 28 zoomfull : { | |
| 29 onclick : "javascript:zoomFullpage()", | |
| 30 tooltip : "view the whole image", | |
| 31 img : "zoom-full.png" | |
| 32 }, | |
| 33 pagewidth : { | |
| 34 onclick : "javascript:zoomFullpage('width')", | |
| 35 tooltip : "page width", | |
| 36 img : "pagewidth.png" | |
| 37 }, | |
| 38 back : { | |
| 616 | 39 onclick : ["gotoPage", "-1"], |
| 603 | 40 tooltip : "goto previous image", |
| 41 img : "back.png" | |
| 42 }, | |
| 43 fwd : { | |
| 616 | 44 onclick : ["gotoPage", "+1"], |
| 603 | 45 tooltip : "goto next image", |
| 46 img : "fwd.png" | |
| 47 }, | |
| 48 page : { | |
| 49 onclick : "javascript:gotoPageWin()", | |
| 50 tooltip : "specify image", | |
| 51 img : "page.png" | |
| 52 }, | |
| 53 bird : { | |
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54 onclick : "toggleBirdDiv", |
| 603 | 55 tooltip : "show bird's eye view", |
| 56 img : "birds-eye.png" | |
| 57 }, | |
| 58 help : { | |
| 616 | 59 onclick : "toggleAboutDiv", |
| 603 | 60 tooltip : "about Digilib", |
| 61 img : "help.png" | |
| 62 }, | |
| 63 reset : { | |
| 64 onclick : "javascript:resetImage()", | |
| 65 tooltip : "reset image", | |
| 66 img : "reset.png" | |
| 67 }, | |
| 68 mark : { | |
| 69 onclick : "javascript:setMark()", | |
| 70 tooltip : "set a mark", | |
| 71 img : "mark.png" | |
| 72 }, | |
| 73 delmark : { | |
| 74 onclick : "javascript:removeMark()", | |
| 75 tooltip : "delete the last mark", | |
| 76 img : "delmark.png" | |
| 77 }, | |
| 78 hmir : { | |
| 79 onclick : "javascript:mirror('h')", | |
| 80 tooltip : "mirror horizontally", | |
| 81 img : "mirror-horizontal.png" | |
| 82 }, | |
| 83 vmir : { | |
| 84 onclick : "javascript:mirror('v')", | |
| 85 tooltip : "mirror vertically", | |
| 86 img : "mirror-vertical.png" | |
| 87 }, | |
| 88 rot : { | |
| 89 onclick : "javascript:setParamWin('rot', 'Rotate (0..360) clockwise')", | |
| 90 tooltip : "rotate image", | |
| 91 img : "rotate.png" | |
| 92 }, | |
| 93 brgt : { | |
| 94 onclick : "javascript:setParamWin('brgt', 'Brightness (-255..255)')", | |
| 95 tooltip : "set brightness", | |
| 96 img : "brightness.png" | |
| 97 }, | |
| 98 cont : { | |
| 99 onclick : "javascript:setParamWin('cont', 'Contrast (0..8)')", | |
| 100 tooltip : "set contrast", | |
| 101 img : "contrast.png" | |
| 102 }, | |
| 103 rgb : { | |
| 104 onclick : "javascript:setParamWin('rgb', '...')", | |
| 105 tooltip : "set rgb values", | |
| 106 img : "rgb.png" | |
| 107 }, | |
| 108 quality : { | |
| 109 onclick : "javascript:setQualityWin('Quality (0..2)')", | |
| 110 tooltip : "set image quality", | |
| 111 img : "quality.png" | |
| 112 }, | |
| 113 size : { | |
| 114 onclick : "javascript:toggleSizeMenu()", | |
| 115 tooltip : "set page size", | |
| 116 img : "size.png" | |
| 117 }, | |
| 118 calibrationx : { | |
| 119 onclick : "javascript:calibrate('x')", | |
| 120 tooltip : "calibrate screen x-ratio", | |
| 121 img : "calibration-x.png" | |
| 122 }, | |
| 123 scale : { | |
| 124 onclick : "javascript:toggleScaleMenu()", | |
| 125 tooltip : "change image scale", | |
| 126 img : "original-size.png" | |
| 127 }, | |
| 128 options : { | |
| 129 onclick : "javascript:toggleOptionDiv()", | |
| 130 tooltip : "hide options", | |
| 131 img : "options.png" | |
| 132 }, | |
| 133 SEP : { | |
| 134 img : "sep.png" | |
| 135 } | |
| 136 }; | |
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137 |
| 598 | 138 var defaults = { |
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139 // the root digilib element, for easy retrieval |
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140 'digilibRoot' : null, |
| 609 | 141 // version of this script |
| 142 'version' : 'jquery.digilib.js 1.0', | |
| 143 // logo url | |
| 144 'logoUrl' : '../img/digilib-logo-text1.png', | |
| 145 // repository url | |
| 146 'reposUrl' : 'http://digilib.berlios.de', | |
| 603 | 147 // base URL to Scaler servlet |
| 148 'scalerBaseUrl' : 'http://digilib.mpiwg-berlin.mpg.de/digitallibrary/servlet/Scaler', | |
| 149 // list of Scaler parameters | |
| 602 | 150 'scalerParamNames' : ['fn','pn','dw','dh','ww','wh','wx','wy','ws','mo', |
| 151 'rot','cont','brgt','rgbm','rgba','ddpi','ddpix','ddpiy'], | |
| 603 | 152 // mode of operation. |
| 153 // fullscreen: takes parameters from page URL, keeps state in page URL | |
| 154 // embedded: takes parameters from Javascript options, keeps state inside object | |
| 155 'interactionMode' : 'fullscreen', | |
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156 // actions |
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157 'actions' : actions, |
| 605 | 158 // path to button images (must end with a slash) |
| 159 'buttonsImagePath' : '../greyskin/', | |
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160 // actions groups |
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161 'actionsStandard' : ["reference","zoomin","zoomout","zoomarea","zoomfull","pagewidth","back","fwd","page","bird","SEP","help","reset","options"], |
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162 'actionsSpecial' : ["mark","delmark","hmir","vmir","rot","brgt","cont","rgb","quality","size","calibrationx","scale","SEP","options"], |
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163 'actionsCustom' : [], |
| 609 | 164 // is birdView shown? |
| 165 'isBirdDivVisible' : false, | |
| 608 | 166 // dimensions of bird's eye window |
| 167 'birdMaxX' : 200, | |
| 609 | 168 'birdMaxY' : 200, |
| 169 // is the "about" window shown? | |
| 170 'isAboutDivVisible' : false | |
| 171 | |
| 603 | 172 }; |
| 598 | 173 |
| 601 | 174 // parameters from the query string |
| 600 | 175 var queryParams = {}; |
| 601 | 176 |
| 177 // affine geometry classes | |
| 178 var geom = dlGeometry(); | |
| 597 | 179 |
| 180 var methods = { | |
| 601 | 181 // digilib initialization |
| 597 | 182 init : function(options) { |
| 601 | 183 // settings for this digilib instance are merged from defaults and options |
| 600 | 184 var settings = $.extend({}, defaults, options); |
| 185 var isFullscreen = settings.interactionMode === 'fullscreen'; | |
| 186 if (isFullscreen) { | |
| 187 queryParams = parseQueryParams(); | |
| 188 }; | |
| 597 | 189 return this.each(function() { |
| 598 | 190 var $elem = $(this); |
| 191 var data = $elem.data('digilib'); | |
| 600 | 192 var elemSettings; |
| 601 | 193 // if the plugin hasn't been initialized yet |
| 597 | 194 if (!data) { |
| 598 | 195 // merge query parameters |
| 600 | 196 if (isFullscreen) { |
| 197 elemSettings = $.extend({}, settings, queryParams); | |
| 198 } else { | |
| 199 elemSettings = $.extend({}, settings, parseImgParams($elem)); | |
| 200 }; | |
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201 // store $(this) element in the settings |
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202 elemSettings.digilibRoot = $elem; |
| 598 | 203 // store in data element |
| 204 $elem.data('digilib', { | |
| 205 target : $elem, | |
| 600 | 206 settings : elemSettings |
| 597 | 207 }); |
| 208 } | |
| 601 | 209 // create HTML structure |
| 210 setupScalerDiv($elem, elemSettings); | |
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211 setupButtons($elem, elemSettings, 'actionsStandard'); |
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212 // bird's eye view creation - could be deferred? |
| 608 | 213 setupBirdviewDiv($elem, elemSettings); |
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214 // about window creation - could be deferred? restrict to only one item? |
| 609 | 215 setupAboutDiv($elem, elemSettings); |
| 597 | 216 }); |
| 217 }, | |
| 601 | 218 |
| 219 // clean up digilib | |
| 597 | 220 destroy : function() { |
| 221 return this.each(function(){ | |
| 222 var $this = $(this); | |
| 223 var data = $this.data('digilib'); | |
| 224 // Namespacing FTW | |
| 598 | 225 $(window).unbind('.digilib'); // unbinds all digilibs(?) |
| 597 | 226 data.digilib.remove(); |
| 227 $this.removeData('digilib'); | |
| 228 }); | |
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229 }, |
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230 |
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231 // event handler: toggles the visibility of the 'about' window |
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232 toggleAboutDiv : function () { |
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233 var $elem = $(this); // the clicked button |
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234 var settings = $elem.data('digilib').settings; |
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235 var $root = settings.digilibRoot; |
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236 var $about = $root.find('div.about'); |
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237 settings.isAboutDivVisible = !settings.isAboutDivVisible; |
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238 if (settings.isAboutDivVisible) { |
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239 $about.fadeIn(); |
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240 } else { |
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241 $about.fadeOut(); |
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242 }; |
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243 return false; |
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244 }, |
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245 |
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246 // event handler: toggles the visibility of the bird's eye window |
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247 toggleBirdDiv : function () { |
| 616 | 248 // TODO: red frame functionality |
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249 var $elem = $(this); // the clicked button |
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250 var settings = $elem.data('digilib').settings; |
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251 var $root = settings.digilibRoot; |
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252 var $bird = $root.find('div.birdview'); |
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253 settings.isBirdDivVisible = !settings.isBirdDivVisible; |
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254 if (settings.isBirdDivVisible) { |
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255 $bird.fadeIn(); |
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256 } else { |
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257 $bird.fadeOut(); |
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258 }; |
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259 return false; |
| 616 | 260 }, |
| 261 | |
| 262 // goto given page nr (+/-: relative) | |
| 263 gotoPage : function(pageNr, keepMarks) { | |
| 264 var $elem = $(this); // the clicked button | |
| 265 var settings = $elem.data('digilib').settings; | |
| 266 var oldpn = settings.pn; | |
| 617 | 267 var pn = setNumValue(settings, "pn", pageNr); |
| 268 if (pn == null) return false; // nothing happened | |
| 616 | 269 if (pn < 1) { |
| 270 alert("no such page (page number too low)"); | |
| 271 settings.pn = oldpn; | |
| 272 return false; | |
| 273 }; | |
| 274 if (settings.pt) { | |
| 275 if (pn > settings.pt) { | |
| 276 alert("no such page (page number too high)"); | |
| 277 settings.pn = oldpn; | |
| 278 return false; | |
| 279 } | |
| 280 }; | |
| 281 // TODO: keepMarks | |
| 282 var $root = settings.digilibRoot; | |
| 283 var $img = $root.find('img.pic'); | |
| 284 display($img, settings); | |
| 617 | 285 return false; |
| 597 | 286 } |
| 598 | 287 }; |
| 597 | 288 |
| 616 | 289 // sets a key to a value (relative values with +/- if relative=true) |
| 290 var setNumValue = function(settings, key, value) { | |
| 291 // TODO: type and error checking | |
| 292 if (settings[key] == null) return null; | |
| 293 var sign = value.substring(0,1); | |
| 294 if (sign === '+' || sign === '-') { | |
| 295 settings[key] = parseFloat(settings[key]) + parseFloat(value); | |
| 296 } else { | |
| 297 settings[key] = value; | |
| 298 } | |
| 299 return settings[key]; | |
| 300 }; | |
| 301 | |
| 601 | 302 // returns parameters from page url |
| 600 | 303 var parseQueryParams = function() { |
| 304 return parseQueryString(location.search.slice(1)); | |
| 305 }; | |
| 306 | |
| 601 | 307 // returns parameters taken from embedded img-element |
| 600 | 308 var parseImgParams = function($elem) { |
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309 var src = $elem.find('img').first().attr('src'); |
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310 if (!src) { |
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311 return null; |
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312 } |
| 600 | 313 var pos = src.indexOf('?'); |
| 314 var query = (pos < 0) ? '' : src.substring(pos + 1); | |
| 315 var scalerUrl = src.substring(0, pos); | |
| 316 var hash = parseQueryString(query); | |
| 602 | 317 hash.scalerBaseUrl = scalerUrl; |
| 600 | 318 // console.log(hash); |
| 319 return hash; | |
| 320 }; | |
| 321 | |
| 601 | 322 // parses query parameter string into parameter object |
| 600 | 323 var parseQueryString = function(query) { |
| 324 var pairs = query.split("&"); | |
| 325 var hash = {}; | |
| 326 for (var i = 0; i < pairs.length; i++) { | |
| 327 var pair = pairs[i].split("="); | |
| 328 if (pair.length === 2) { | |
| 601 | 329 hash[pair[0]] = pair[1]; |
| 600 | 330 }; |
| 331 }; | |
| 332 return hash; | |
| 333 }; | |
| 597 | 334 |
| 608 | 335 // returns a query string from key names from a parameter hash |
| 336 var makeParamString = function (settings, keys) { | |
| 337 var paramString = ''; | |
| 338 var latter = false; | |
| 339 for (i = 0; i < keys.length; ++i) { | |
| 340 var key = keys[i]; | |
| 341 if (settings[key]) { | |
| 342 // first param gets no '&' | |
| 343 paramString += latter ? '&' : ''; | |
| 344 latter = true; | |
| 345 // add parm=val | |
| 346 paramString += key + '=' + settings[key]; | |
| 347 }; | |
| 348 } | |
| 349 return paramString; | |
| 350 }; | |
| 351 | |
| 601 | 352 // returns URL and query string for Scaler |
| 353 var getScalerString = function (settings) { | |
| 608 | 354 var keys = settings.scalerParamNames; |
| 355 var queryString = makeParamString(settings, keys); | |
| 356 var url = settings.scalerBaseUrl + '?' + queryString; | |
| 602 | 357 return url; |
| 358 }; | |
| 608 | 359 |
| 602 | 360 // returns maximum size for scaler img in fullscreen mode |
| 361 var getFullscreenImgSize = function($elem) { | |
| 362 var winH = $(window).height(); | |
| 363 var winW = $(window).width(); | |
| 364 // TODO: account for borders? | |
| 365 return geom.size(winW, winH); | |
| 601 | 366 }; |
| 367 | |
| 615 | 368 // (re)load the img from a new scaler URL |
| 369 var display = function ($img, settings) { | |
| 616 | 370 // TODO: update location.href (browser URL) in fullscreen mode |
| 615 | 371 var scalerUrl = getScalerString(settings); |
| 372 $img.attr('src', scalerUrl); | |
| 616 | 373 // TODO: update bird view? |
| 615 | 374 }; |
| 375 | |
| 601 | 376 // creates HTML structure for digilib in elem |
| 377 var setupScalerDiv = function ($elem, settings) { | |
| 616 | 378 var $img; |
| 601 | 379 if (settings.interactionMode === 'fullscreen') { |
| 602 | 380 // fullscreen |
| 381 var imgSize = getFullscreenImgSize($elem); | |
| 382 settings.dw = imgSize.width; | |
| 383 settings.dh = imgSize.height; | |
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384 $img = $('<img/>'); |
| 615 | 385 display($img, settings); |
| 602 | 386 } else { |
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387 // embedded mode -- try to keep img tag |
| 616 | 388 $img = $elem.find('img'); |
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389 if ($img.length > 0) { |
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390 console.debug("img detach:",$img); |
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391 $img.detach(); |
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392 } else { |
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393 $img = $('<img/>'); |
| 615 | 394 display($img, settings); |
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395 } |
| 601 | 396 } |
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397 // create new html |
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398 $elem.empty(); // TODO: should we keep stuff for customization? |
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399 var $scaler = $('<div class="scaler"/>'); |
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400 $elem.append($scaler); |
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401 $scaler.append($img); |
| 615 | 402 $img.addClass('pic'); |
| 616 | 403 $img.load(scalerImgLoadedFn(settings)); |
| 601 | 404 }; |
| 608 | 405 |
| 603 | 406 // creates HTML structure for buttons in elem |
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407 var setupButtons = function ($elem, settings, actionGroup) { |
| 603 | 408 if (settings.interactionMode === 'fullscreen') { |
| 409 // fullscreen -- create new | |
| 605 | 410 var $buttonsDiv = $('<div class="buttons"></div>'); |
| 411 $elem.append($buttonsDiv); | |
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412 var actionNames = settings[actionGroup]; |
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413 for (var i = 0; i < actionNames.length; i++) { |
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414 var actionName = actionNames[i]; |
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415 var actionSettings = settings.actions[actionName]; |
| 605 | 416 // construct the button html |
| 417 var $button = $('<div class="button"></div>'); | |
| 418 var $a = $('<a/>'); | |
| 607 | 419 var $img = $('<img class="button"/>'); |
| 605 | 420 $buttonsDiv.append($button); |
| 421 $button.append($a); | |
| 422 $a.append($img); | |
| 423 // add attributes and bindings | |
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424 $button.attr('title', actionSettings.tooltip); |
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425 $button.addClass('button-' + actionName); |
| 605 | 426 // let the clicked <a> element know about the digilib context |
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427 $a.data('digilib', { 'action' : actionName, 'settings' : settings } ); |
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428 $a.bind('click', function() { |
| 612 | 429 var $elem = $(this); |
| 430 // get the context data | |
| 431 var data = $elem.data('digilib'); | |
| 605 | 432 // find the action for the clicked element |
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433 var method = data.settings.actions[data.action].onclick; |
| 612 | 434 if ($.isArray(method)) { |
| 435 $elem.digilib.apply(this, method); | |
| 436 } else { | |
| 437 $elem.digilib(method); | |
| 438 }; | |
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439 console.log(method); |
| 605 | 440 }); |
| 441 // binding mit closure | |
| 612 | 442 //(function(){ var action = actionSettings.onclick; |
| 605 | 443 // $a.bind('click', function(){ console.log( action )} ); |
| 444 //})(); | |
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445 $img.attr('src', settings.buttonsImagePath + actionSettings.img); |
| 604 | 446 }; |
| 447 } | |
| 605 | 448 return $buttonsDiv; |
| 603 | 449 }; |
| 608 | 450 |
| 451 // creates HTML structure for the bird's eye view in elem | |
| 452 var setupBirdviewDiv = function ($elem, settings) { | |
| 453 // use only the relevant parameters | |
| 454 var keys = ['fn','pn','dw','dh']; | |
| 455 var birdDimensions = { | |
| 456 'dw' : settings.birdMaxX, | |
| 457 'dh' : settings.birdMaxY | |
| 458 }; | |
| 459 var birdSettings = $.extend({}, settings, birdDimensions); | |
| 460 var birdUrl = settings.scalerBaseUrl + '?' + makeParamString(birdSettings, keys); | |
| 461 // the bird's eye div | |
| 618 | 462 var $birdviewDiv = $('<div class="birdview" style="display:none"/>'); |
| 608 | 463 // the detail indicator frame |
| 464 var $birdzoomDiv = $('<div class="birdzoom"/>'); | |
| 465 // the small image | |
| 466 var $birdImg = $('<img class="birdimg"/>'); | |
| 467 $elem.append($birdviewDiv); | |
| 468 $birdviewDiv.append($birdzoomDiv); | |
| 469 $birdviewDiv.append($birdImg); | |
| 470 $birdImg.attr('src', birdUrl); | |
| 471 }; | |
| 472 | |
| 618 | 473 // creates HTML structure for the about view in elem |
| 609 | 474 var setupAboutDiv = function ($elem, settings) { |
| 618 | 475 var $aboutDiv = $('<div class="about" style="display:none"/>'); |
| 609 | 476 var $header = $('<p>Digilib Graphic Viewer</p>'); |
| 477 var $link = $('<a/>'); | |
| 478 var $logo = $('<img class="logo" title="digilib"/>'); | |
| 479 var $content = $('<p/>'); | |
| 480 $elem.append($aboutDiv); | |
| 481 $aboutDiv.append($header); | |
| 482 $aboutDiv.append($link); | |
| 483 $aboutDiv.append($content); | |
| 484 $link.append($logo); | |
| 485 $logo.attr('src', settings.logoUrl); | |
| 486 $link.attr('href', settings.reposUrl); | |
| 487 $content.text('Version: ' + settings.version); | |
| 612 | 488 // let the element know about the digilib context |
| 489 $aboutDiv.data('digilib', { 'settings' : settings } ); | |
| 490 $aboutDiv.bind('click', function() { | |
| 491 console.log($(this)); | |
| 492 $(this).digilib('toggleAboutDiv'); | |
| 493 }); | |
| 609 | 494 }; |
| 495 | |
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496 // returns function for load event of scaler img |
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497 var scalerImgLoadedFn = function(settings) { |
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498 return function() { |
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499 console.debug("img loaded! settings=", settings); |
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500 }; |
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501 }; |
| 598 | 502 // hook plugin into jquery |
| 503 $.fn.digilib = function(method) { | |
| 504 if (methods[method]) { | |
| 505 return methods[method].apply(this, Array.prototype.slice.call(arguments, 1)); | |
| 506 } else if (typeof(method) === 'object' || !method) { | |
| 507 return methods.init.apply(this, arguments); | |
| 508 } else { | |
| 509 $.error( 'Method ' + method + ' does not exist on jQuery.digilib' ); | |
| 510 } | |
| 511 }; | |
| 597 | 512 |
| 513 })(jQuery); |