1/** 2 * jQuery lightBox plugin 3 * This jQuery plugin was inspired and based on Lightbox 2 by Lokesh Dhakar (http://www.huddletogether.com/projects/lightbox2/) 4 * and adapted to me for use like a plugin from jQuery. 5 * @name jquery-lightbox-0.5.js 6 * @author Leandro Vieira Pinho - http://leandrovieira.com 7 * @version 0.5 8 * @date April 11, 2008 9 * @category jQuery plugin 10 * @copyright (c) 2008 Leandro Vieira Pinho (leandrovieira.com) 11 * @license CCAttribution-ShareAlike 2.5 Brazil - http://creativecommons.org/licenses/by-sa/2.5/br/deed.en_US 12 * @example Visit http://leandrovieira.com/projects/jquery/lightbox/ for more informations about this jQuery plugin 13 */ 14 15// Offering a Custom Alias suport - More info: http://docs.jquery.com/Plugins/Authoring#Custom_Alias 16(function($) { 17 /** 18 * $ is an alias to jQuery object 19 * 20 */ 21 $.fn.lightBox = function(settings) { 22 // Settings to configure the jQuery lightBox plugin how you like 23 settings = jQuery.extend({ 24 // Configuration related to overlay 25 overlayBgColor: '#000', // (string) Background color to overlay; inform a hexadecimal value like: #RRGGBB. Where RR, GG, and BB are the hexadecimal values for the red, green, and blue values of the color. 26 overlayOpacity: 0.8, // (integer) Opacity value to overlay; inform: 0.X. Where X are number from 0 to 9 27 // Configuration related to navigation 28 fixedNavigation: false, // (boolean) Boolean that informs if the navigation (next and prev button) will be fixed or not in the interface. 29 // Configuration related to images 30 imageLoading: 'images/lightbox-ico-loading.gif', // (string) Path and the name of the loading icon 31 imageBtnPrev: 'images/lightbox-btn-prev.gif', // (string) Path and the name of the prev button image 32 imageBtnNext: 'images/lightbox-btn-next.gif', // (string) Path and the name of the next button image 33 imageBtnClose: 'images/lightbox-btn-close.gif', // (string) Path and the name of the close btn 34 imageBlank: 'images/lightbox-blank.gif', // (string) Path and the name of a blank image (one pixel) 35 // Configuration related to container image box 36 containerBorderSize: 10, // (integer) If you adjust the padding in the CSS for the container, #lightbox-container-image-box, you will need to update this value 37 containerResizeSpeed: 400, // (integer) Specify the resize duration of container image. These number are miliseconds. 400 is default. 38 // Configuration related to texts in caption. For example: Image 2 of 8. You can alter either "Image" and "of" texts. 39 txtImage: 'Image', // (string) Specify text "Image" 40 txtOf: 'of', // (string) Specify text "of" 41 // Configuration related to keyboard navigation 42 keyToClose: 'c', // (string) (c = close) Letter to close the jQuery lightBox interface. Beyond this letter, the letter X and the SCAPE key is used to. 43 keyToPrev: 'p', // (string) (p = previous) Letter to show the previous image 44 keyToNext: 'n', // (string) (n = next) Letter to show the next image. 45 // Don´t alter these variables in any way 46 imageArray: [], 47 activeImage: 0 48 },settings); 49 // Caching the jQuery object with all elements matched 50 var jQueryMatchedObj = this; // This, in this context, refer to jQuery object 51 /** 52 * Initializing the plugin calling the start function 53 * 54 * @return boolean false 55 */ 56 function _initialize() { 57 _start(this,jQueryMatchedObj); // This, in this context, refer to object (link) which the user have clicked 58 return false; // Avoid the browser following the link 59 } 60 /** 61 * Start the jQuery lightBox plugin 62 * 63 * @param object objClicked The object (link) whick the user have clicked 64 * @param object jQueryMatchedObj The jQuery object with all elements matched 65 */ 66 function _start(objClicked,jQueryMatchedObj) { 67 // Hime some elements to avoid conflict with overlay in IE. These elements appear above the overlay. 68 $('embed, object, select').css({ 'visibility' : 'hidden' }); 69 // Call the function to create the markup structure; style some elements; assign events in some elements. 70 _set_interface(); 71 // Unset total images in imageArray 72 settings.imageArray.length = 0; 73 // Unset image active information 74 settings.activeImage = 0; 75 // We have an image set? Or just an image? Let´s see it. 76 if ( jQueryMatchedObj.length == 1 ) { 77 settings.imageArray.push(new Array(objClicked.getAttribute('href'),objClicked.getAttribute('title'))); 78 } else { 79 // Add an Array (as many as we have that match the objClicked 'rel' attr), with href and title atributes, inside the Array that storage the images references 80 for ( var i = 0; i < jQueryMatchedObj.length; i++ ) { 81 if(jQueryMatchedObj[i].getAttribute('rel')==objClicked.getAttribute('rel')) { 82 settings.imageArray.push(new Array(jQueryMatchedObj[i].getAttribute('href'),jQueryMatchedObj[i].getAttribute('title'))); 83 } 84 } 85 } 86 while ( settings.imageArray[settings.activeImage][0] != objClicked.getAttribute('href') ) { 87 settings.activeImage++; 88 } 89 // Call the function that prepares image exibition 90 _set_image_to_view(); 91 } 92 /** 93 * Create the jQuery lightBox plugin interface 94 * 95 * The HTML markup will be like that: 96 <div id="jquery-overlay"></div> 97 <div id="jquery-lightbox"> 98 <div id="lightbox-container-image-box"> 99 <div id="lightbox-container-image"> 100 <img src="../fotos/XX.jpg" id="lightbox-image"> 101 <div id="lightbox-nav"> 102 <a href="#" id="lightbox-nav-btnPrev"></a> 103 <a href="#" id="lightbox-nav-btnNext"></a> 104 </div> 105 <div id="lightbox-loading"> 106 <a href="#" id="lightbox-loading-link"> 107 <img src="../images/lightbox-ico-loading.gif"> 108 </a> 109 </div> 110 </div> 111 </div> 112 <div id="lightbox-container-image-data-box"> 113 <div id="lightbox-container-image-data"> 114 <div id="lightbox-image-details"> 115 <span id="lightbox-image-details-caption"></span> 116 <span id="lightbox-image-details-currentNumber"></span> 117 </div> 118 <div id="lightbox-secNav"> 119 <a href="#" id="lightbox-secNav-btnClose"> 120 <img src="../images/lightbox-btn-close.gif"> 121 </a> 122 </div> 123 </div> 124 </div> 125 </div> 126 * 127 */ 128 function _set_interface() { 129 // Apply the HTML markup into body tag 130 $('body').append('<div id="jquery-overlay"></div><div id="jquery-lightbox"><div id="lightbox-container-image-box"><div id="lightbox-container-image"><img id="lightbox-image"><div style="" id="lightbox-nav"><a href="#" id="lightbox-nav-btnPrev"></a><a href="#" id="lightbox-nav-btnNext"></a></div><div id="lightbox-loading"><a href="#" id="lightbox-loading-link"><img src="' + settings.imageLoading + '"></a></div></div></div><div id="lightbox-container-image-data-box"><div id="lightbox-container-image-data"><div id="lightbox-image-details"><span id="lightbox-image-details-caption"></span><span id="lightbox-image-details-currentNumber"></span></div><div id="lightbox-secNav"><a href="#" id="lightbox-secNav-btnClose"><img src="' + settings.imageBtnClose + '"></a></div></div></div></div>'); 131 // Get page sizes 132 var arrPageSizes = ___getPageSize(); 133 // Style overlay and show it 134 $('#jquery-overlay').css({ 135 backgroundColor: settings.overlayBgColor, 136 opacity: settings.overlayOpacity, 137 width: arrPageSizes[0], 138 height: arrPageSizes[1] 139 }).fadeIn(); 140 // Get page scroll 141 var arrPageScroll = ___getPageScroll(); 142 // Calculate top and left offset for the jquery-lightbox div object and show it 143 $('#jquery-lightbox').css({ 144 top: arrPageScroll[1] + (arrPageSizes[3] / 10), 145 left: arrPageScroll[0] 146 }).show(); 147 // Assigning click events in elements to close overlay 148 $('#jquery-overlay,#jquery-lightbox').click(function() { 149 _finish(); 150 }); 151 // Assign the _finish function to lightbox-loading-link and lightbox-secNav-btnClose objects 152 $('#lightbox-loading-link,#lightbox-secNav-btnClose').click(function() { 153 _finish(); 154 return false; 155 }); 156 // If window was resized, calculate the new overlay dimensions 157 $(window).resize(function() { 158 // Get page sizes 159 var arrPageSizes = ___getPageSize(); 160 // Style overlay and show it 161 $('#jquery-overlay').css({ 162 width: arrPageSizes[0], 163 height: arrPageSizes[1] 164 }); 165 // Get page scroll 166 var arrPageScroll = ___getPageScroll(); 167 // Calculate top and left offset for the jquery-lightbox div object and show it 168 $('#jquery-lightbox').css({ 169 top: arrPageScroll[1] + (arrPageSizes[3] / 10), 170 left: arrPageScroll[0] 171 }); 172 }); 173 } 174 /** 175 * Prepares image exibition; doing a image´s preloader to calculate it´s size 176 * 177 */ 178 function _set_image_to_view() { // show the loading 179 // Show the loading 180 $('#lightbox-loading').show(); 181 if ( settings.fixedNavigation ) { 182 $('#lightbox-image,#lightbox-container-image-data-box,#lightbox-image-details-currentNumber').hide(); 183 } else { 184 // Hide some elements 185 $('#lightbox-image,#lightbox-nav,#lightbox-nav-btnPrev,#lightbox-nav-btnNext,#lightbox-container-image-data-box,#lightbox-image-details-currentNumber').hide(); 186 } 187 // Image preload process 188 var objImagePreloader = new Image();
189 objImagePreloader.onload = function() { 190 $('#lightbox-image').attr('src',settings.imageArray[settings.activeImage][0]); 191 // Perfomance an effect in the image container resizing it 192 _resize_container_image_box(objImagePreloader.width,objImagePreloader.height); 193 // clear onLoad, IE behaves irratically with animated gifs otherwise 194 objImagePreloader.onload=function(){}; 195 }; 196 objImagePreloader.src = settings.imageArray[settings.activeImage][0]; 197 }; 198 /** 199 * Perfomance an effect in the image container resizing it 200 * 201 * @param integer intImageWidth The image´s width that will be showed 202 * @param integer intImageHeight The image´s height that will be showed 203 */ 204 function _resize_container_image_box(intImageWidth,intImageHeight) { 205 // Get current width and height 206 var intCurrentWidth = $('#lightbox-container-image-box').width(); 207 var intCurrentHeight = $('#lightbox-container-image-box').height(); 208 // Get the width and height of the selected image plus the padding 209 var intWidth = (intImageWidth + (settings.containerBorderSize * 2)); // Plus the image´s width and the left and right padding value 210 var intHeight = (intImageHeight + (settings.containerBorderSize * 2)); // Plus the image´s height and the left and right padding value 211 // Diferences 212 var intDiffW = intCurrentWidth - intWidth; 213 var intDiffH = intCurrentHeight - intHeight; 214 // Perfomance the effect 215 $('#lightbox-container-image-box').animate({ width: intWidth, height: intHeight },settings.containerResizeSpeed,function() { _show_image(); }); 216 if ( ( intDiffW == 0 ) && ( intDiffH == 0 ) ) { 217 if ( $.browser.msie ) { 218 ___pause(250); 219 } else { 220 ___pause(100); 221 } 222 } 223 $('#lightbox-container-image-data-box').css({ width: intImageWidth }); 224 $('#lightbox-nav-btnPrev,#lightbox-nav-btnNext').css({ height: intImageHeight + (settings.containerBorderSize * 2) }); 225 }; 226 /** 227 * Show the prepared image 228 * 229 */ 230 function _show_image() { 231 $('#lightbox-loading').hide(); 232 $('#lightbox-image').fadeIn(function() { 233 _show_image_data(); 234 _set_navigation(); 235 }); 236 _preload_neighbor_images(); 237 }; 238 /** 239 * Show the image information 240 * 241 */ 242 function _show_image_data() { 243 $('#lightbox-container-image-data-box').slideDown('fast'); 244 $('#lightbox-image-details-caption').hide(); 245 if ( settings.imageArray[settings.activeImage][1] ) { 246 $('#lightbox-image-details-caption').html(settings.imageArray[settings.activeImage][1]).show(); 247 } 248 // If we have a image set, display 'Image X of X' 249 if ( settings.imageArray.length > 1 ) { 250 $('#lightbox-image-details-currentNumber').html(settings.txtImage + ' ' + ( settings.activeImage + 1 ) + ' ' + settings.txtOf + ' ' + settings.imageArray.length).show(); 251 } 252 } 253 /** 254 * Display the button navigations 255 * 256 */ 257 function _set_navigation() { 258 $('#lightbox-nav').show(); 259 260 // Instead to define this configuration in CSS file, we define here. And it´s need to IE. Just. 261 $('#lightbox-nav-btnPrev,#lightbox-nav-btnNext').css({ 'background' : 'transparent url(' + settings.imageBlank + ') no-repeat' }); 262 263 // Show the prev button, if not the first image in set 264 if ( settings.activeImage != 0 ) { 265 if ( settings.fixedNavigation ) { 266 $('#lightbox-nav-btnPrev').css({ 'background' : 'url(' + settings.imageBtnPrev + ') left 15% no-repeat' }) 267 .unbind() 268 .bind('click',function() { 269 settings.activeImage = settings.activeImage - 1; 270 _set_image_to_view(); 271 return false; 272 }); 273 } else { 274 // Show the images button for Next buttons 275 $('#lightbox-nav-btnPrev').unbind().hover(function() { 276 $(this).css({ 'background' : 'url(' + settings.imageBtnPrev + ') left 15% no-repeat' }); 277 },function() { 278 $(this).css({ 'background' : 'transparent url(' + settings.imageBlank + ') no-repeat' }); 279 }).show().bind('click',function() { 280 settings.activeImage = settings.activeImage - 1; 281 _set_image_to_view(); 282 return false; 283 });
284 } 285 } 286 287 // Show the next button, if not the last image in set 288 if ( settings.activeImage != ( settings.imageArray.length -1 ) ) { 289 if ( settings.fixedNavigation ) { 290 $('#lightbox-nav-btnNext').css({ 'background' : 'url(' + settings.imageBtnNext + ') right 15% no-repeat' }) 291 .unbind() 292 .bind('click',function() { 293 settings.activeImage = settings.activeImage + 1; 294 _set_image_to_view(); 295 return false; 296 }); 297 } else { 298 // Show the images button for Next buttons 299 $('#lightbox-nav-btnNext').unbind().hover(function() { 300 $(this).css({ 'background' : 'url(' + settings.imageBtnNext + ') right 15% no-repeat' }); 301 },function() { 302 $(this).css({ 'background' : 'transparent url(' + settings.imageBlank + ') no-repeat' }); 303 }).show().bind('click',function() { 304 settings.activeImage = settings.activeImage + 1; 305 _set_image_to_view(); 306 return false; 307 }); 308 } 309 } 310 // Enable keyboard navigation 311 _enable_keyboard_navigation(); 312 } 313 /** 314 * Enable a support to keyboard navigation 315 * 316 */ 317 function _enable_keyboard_navigation() { 318 $(document).keydown(function(objEvent) { 319 _keyboard_action(objEvent); 320 }); 321 } 322 /** 323 * Disable the support to keyboard navigation 324 * 325 */ 326 function _disable_keyboard_navigation() { 327 $(document).unbind(); 328 } 329 /** 330 * Perform the keyboard actions 331 * 332 */ 333 function _keyboard_action(objEvent) { 334 // To ie 335 if ( objEvent == null ) { 336 keycode = event.keyCode; 337 escapeKey = 27; 338 // To Mozilla 339 } else { 340 keycode = objEvent.keyCode; 341 escapeKey = objEvent.DOM_VK_ESCAPE; 342 } 343 // Get the key in lower case form 344 key = String.fromCharCode(keycode).toLowerCase(); 345 // Verify the keys to close the ligthBox 346 if ( ( key == settings.keyToClose ) || ( key == 'x' ) || ( keycode == escapeKey ) ) { 347 _finish(); 348 } 349 // Verify the key to show the previous image 350 if ( ( key == settings.keyToPrev ) || ( keycode == 37 ) ) { 351 // If we´re not showing the first image, call the previous 352 if ( settings.activeImage != 0 ) { 353 settings.activeImage = settings.activeImage - 1; 354 _set_image_to_view(); 355 _disable_keyboard_navigation(); 356 } 357 } 358 // Verify the key to show the next image 359 if ( ( key == settings.keyToNext ) || ( keycode == 39 ) ) { 360 // If we´re not showing the last image, call the next 361 if ( settings.activeImage != ( settings.imageArray.length - 1 ) ) { 362 settings.activeImage = settings.activeImage + 1; 363 _set_image_to_view(); 364 _disable_keyboard_navigation(); 365 } 366 } 367 } 368 /** 369 * Preload prev and next images being showed 370 * 371 */ 372 function _preload_neighbor_images() { 373 if ( (settings.imageArray.length -1) > settings.activeImage ) { 374 objNext = new Image(); 375 objNext.src = settings.imageArray[settings.activeImage + 1][0]; 376 } 377 if ( settings.activeImage > 0 ) { 378 objPrev = new Image(); 379 objPrev.src = settings.imageArray[settings.activeImage -1][0]; 380 } 381 } 382 /** 383 * Remove jQuery lightBox plugin HTML markup 384 * 385 */ 386 function _finish() { 387 $('#jquery-lightbox').remove(); 388 $('#jquery-overlay').fadeOut(function() { $('#jquery-overlay').remove(); }); 389 // Show some elements to avoid conflict with overlay in IE. These elements appear above the overlay. 390 $('embed, object, select').css({ 'visibility' : 'visible' }); 391 } 392 /** 393 / THIRD FUNCTION 394 * getPageSize() by quirksmode.com 395 * 396 * @return Array Return an array with page width, height and window width, height 397 */ 398 function ___getPageSize() { 399 var xScroll, yScroll; 400 if (window.innerHeight && window.scrollMaxY) { 401 xScroll = window.innerWidth + window.scrollMaxX; 402 yScroll = window.innerHeight + window.scrollMaxY; 403 } else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac 404 xScroll = document.body.scrollWidth; 405 yScroll = document.body.scrollHeight; 406 } else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari 407 xScroll = document.body.offsetWidth; 408 yScroll = document.body.offsetHeight; 409 } 410 var windowWidth, windowHeight;
411 if (self.innerHeight) { // all except Explorer 412 if(document.documentElement.clientWidth){ 413 windowWidth = document.documentElement.clientWidth; 414 } else { 415 windowWidth = self.innerWidth; 416 } 417 windowHeight = self.innerHeight; 418 } else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode 419 windowWidth = document.documentElement.clientWidth; 420 windowHeight = document.documentElement.clientHeight; 421 } else if (document.body) { // other Explorers 422 windowWidth = document.body.clientWidth; 423 windowHeight = document.body.clientHeight; 424 } 425 // for small pages with total height less then height of the viewport 426 if(yScroll < windowHeight){ 427 pageHeight = windowHeight; 428 } else { 429 pageHeight = yScroll; 430 } 431 // for small pages with total width less then width of the viewport 432 if(xScroll < windowWidth){ 433 pageWidth = xScroll; 434 } else { 435 pageWidth = windowWidth; 436 } 437 arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight); 438 return arrayPageSize; 439 }; 440 /** 441 / THIRD FUNCTION 442 * getPageScroll() by quirksmode.com 443 * 444 * @return Array Return an array with x,y page scroll values. 445 */ 446 function ___getPageScroll() { 447 var xScroll, yScroll; 448 if (self.pageYOffset) { 449 yScroll = self.pageYOffset; 450 xScroll = self.pageXOffset; 451 } else if (document.documentElement && document.documentElement.scrollTop) { // Explorer 6 Strict 452 yScroll = document.documentElement.scrollTop; 453 xScroll = document.documentElement.scrollLeft; 454 } else if (document.body) {// all other Explorers 455 yScroll = document.body.scrollTop; 456 xScroll = document.body.scrollLeft; 457 } 458 arrayPageScroll = new Array(xScroll,yScroll); 459 return arrayPageScroll; 460 }; 461 /** 462 * Stop the code execution from a escified time in milisecond 463 * 464 */ 465 function ___pause(ms) { 466 var date = new Date(); 467 curDate = null; 468 do { var curDate = new Date(); } 469 while ( curDate - date < ms); 470 }; 471 // Return the jQuery object for chaining. The unbind method is used to avoid click conflict when the plugin is called more than once 472 return this.unbind('click').click(_initialize); 473 }; 474})(jQuery); // Call and execute the function immediately passing the jQuery object
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