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), with href and title atributes, inside the Array that storage the images references 80 for ( var i = 0; i < jQueryMatchedObj.length; i++ ) { 81 settings.imageArray.push(new Array(jQueryMatchedObj[i].getAttribute('href'),jQueryMatchedObj[i].getAttribute('title'))); 82 } 83 } 84 while ( settings.imageArray[settings.activeImage][0] != objClicked.getAttribute('href') ) { 85 settings.activeImage++; 86 } 87 // Call the function that prepares image exibition 88 _set_image_to_view(); 89 } 90 /** 91 * Create the jQuery lightBox plugin interface 92 * 93 * The HTML markup will be like that: 94 <div id="jquery-overlay"></div> 95 <div id="jquery-lightbox"> 96 <div id="lightbox-container-image-box"> 97 <div id="lightbox-container-image"> 98 <img src="../fotos/XX.jpg" id="lightbox-image"> 99 <div id="lightbox-nav"> 100 <a href="#" id="lightbox-nav-btnPrev"></a> 101 <a href="#" id="lightbox-nav-btnNext"></a> 102 </div> 103 <div id="lightbox-loading"> 104 <a href="#" id="lightbox-loading-link"> 105 <img src="../images/lightbox-ico-loading.gif"> 106 </a> 107 </div> 108 </div>
109 </div> 110 <div id="lightbox-container-image-data-box"> 111 <div id="lightbox-container-image-data"> 112 <div id="lightbox-image-details"> 113 <span id="lightbox-image-details-caption"></span> 114 <span id="lightbox-image-details-currentNumber"></span> 115 </div> 116 <div id="lightbox-secNav"> 117 <a href="#" id="lightbox-secNav-btnClose"> 118 <img src="../images/lightbox-btn-close.gif"> 119 </a> 120 </div> 121 </div> 122 </div> 123 </div> 124 * 125 */ 126 function _set_interface() { 127 // Apply the HTML markup into body tag 128 $('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>'); 129 // Get page sizes 130 var arrPageSizes = ___getPageSize(); 131 // Style overlay and show it 132 $('#jquery-overlay').css({ 133 backgroundColor: settings.overlayBgColor, 134 opacity: settings.overlayOpacity, 135 width: arrPageSizes[0], 136 height: arrPageSizes[1] 137 }).fadeIn(); 138 // Get page scroll 139 var arrPageScroll = ___getPageScroll(); 140 // Calculate top and left offset for the jquery-lightbox div object and show it 141 $('#jquery-lightbox').css({ 142 top: arrPageScroll[1] + (30), 143 left: arrPageScroll[0] 144 }).show(); 145 // Assigning click events in elements to close overlay 146 $('#jquery-overlay,#jquery-lightbox').click(function() { 147 _finish(); 148 }); 149 // Assign the _finish function to lightbox-loading-link and lightbox-secNav-btnClose objects 150 $('#lightbox-loading-link,#lightbox-secNav-btnClose').click(function() { 151 _finish(); 152 return false; 153 }); 154 // If window was resized, calculate the new overlay dimensions 155 $(window).resize(function() { 156 // Get page sizes 157 158 var arrPageSizes = ___getPageSize(); 159 // Style overlay and show it 160 $('#jquery-overlay').css({ 161 width: arrPageSizes[0], 162 height: arrPageSizes[1] 163 }); 164 // Get page scroll 165 var arrPageScroll = ___getPageScroll(); 166 // Calculate top and left offset for the jquery-lightbox div object and show it 167 $('#jquery-lightbox').css({ 168 top: arrPageScroll[1] + (30), 169 left: arrPageScroll[0] 170 }); 171 }); 172 } 173 /** 174 * Prepares image exibition; doing a image´s preloader to calculate it´s size 175 * 176 */ 177 function _set_image_to_view() { // show the loading 178 // Show the loading 179 $('#lightbox-loading').show(); 180 if ( settings.fixedNavigation ) { 181 $('#lightbox-image,#lightbox-container-image-data-box,#lightbox-image-details-currentNumber').hide(); 182 } else { 183 // Hide some elements 184 $('#lightbox-image,#lightbox-nav,#lightbox-nav-btnPrev,#lightbox-nav-btnNext,#lightbox-container-image-data-box,#lightbox-image-details-currentNumber').hide(); 185 } 186 // Image preload process 187 var objImagePreloader = new Image(); 188 objImagePreloader.onload = function() { 189 $('#lightbox-image').attr('src',settings.imageArray[settings.activeImage][0]); 190 // Perfomance an effect in the image container resizing it 191 _resize_container_image_box(objImagePreloader.width,objImagePreloader.height); 192 // clear onLoad, IE behaves irratically with animated gifs otherwise 193 objImagePreloader.onload=function(){}; 194 }; 195 objImagePreloader.src = settings.imageArray[settings.activeImage][0]; 196 }; 197 /** 198 * Perfomance an effect in the image container resizing it 199 * 200 * @param integer intImageWidth The image´s width that will be showed 201 * @param integer intImageHeight The image´s height that will be showed 202 */ 203 function _resize_container_image_box(intImageWidth,intImageHeight) { 204 // Get current width and height 205 var intCurrentWidth = $('#lightbox-container-image-box').width(); 206 var intCurrentHeight = $('#lightbox-container-image-box').height(); 207 // Get the width and height of the selected image plus the padding 208 var intWidth = (intImageWidth + (settings.containerBorderSize * 2)); // Plus the image´s width and the left and right padding value 209 var intHeight = (intImageHeight + (settings.containerBorderSize * 2)); // Plus the image´s height and the left and right padding value 210 // Diferences 211 var intDiffW = intCurrentWidth - intWidth; 212 var intDiffH = intCurrentHeight - intHeight; 213 // Perfomance the effect
214 $('#lightbox-container-image-box').animate({ width: intWidth, height: intHeight },settings.containerResizeSpeed,function() { _show_image(); }); 215 if ( ( intDiffW == 0 ) && ( intDiffH == 0 ) ) { 216 if ( $.browser.msie ) { 217 ___pause(250); 218 } else { 219 ___pause(100); 220 } 221 } 222 $('#lightbox-container-image-data-box').css({ width: intImageWidth }); 223 $('#lightbox-nav-btnPrev,#lightbox-nav-btnNext').css({ height: intImageHeight + (settings.containerBorderSize * 2) }); 224 }; 225 /** 226 * Show the prepared image 227 * 228 */ 229 function _show_image() { 230 $('#lightbox-loading').hide(); 231 $('#lightbox-image').fadeIn(function() { 232 _show_image_data(); 233 _set_navigation(); 234 }); 235 _preload_neighbor_images(); 236 }; 237 /** 238 * Show the image information 239 * 240 */ 241 function _show_image_data() { 242 $('#lightbox-container-image-data-box').slideDown('fast'); 243 $('#lightbox-image-details-caption').hide(); 244 if ( settings.imageArray[settings.activeImage][1] ) { 245 $('#lightbox-image-details-caption').html(settings.imageArray[settings.activeImage][1]).show(); 246 } 247 // If we have a image set, display 'Image X of X' 248 if ( settings.imageArray.length > 1 ) { 249 $('#lightbox-image-details-currentNumber').html(settings.txtImage + ' ' + ( settings.activeImage + 1 ) + ' ' + settings.txtOf + ' ' + settings.imageArray.length).show(); 250 } 251 } 252 /** 253 * Display the button navigations 254 * 255 */ 256 function _set_navigation() { 257 $('#lightbox-nav').show(); 258 259 // Instead to define this configuration in CSS file, we define here. And it´s need to IE. Just. 260 $('#lightbox-nav-btnPrev,#lightbox-nav-btnNext').css({ 'background' : 'transparent url(' + settings.imageBlank + ') no-repeat' }); 261 262 // Show the prev button, if not the first image in set 263 if ( settings.activeImage != 0 ) { 264 if ( settings.fixedNavigation ) { 265 $('#lightbox-nav-btnPrev').css({ 'background' : 'url(' + settings.imageBtnPrev + ') left 15% no-repeat' }) 266 .unbind() 267 .bind('click',function() { 268 settings.activeImage = settings.activeImage - 1; 269 _set_image_to_view(); 270 return false; 271 }); 272 } else { 273 // Show the images button for Next buttons 274 $('#lightbox-nav-btnPrev').unbind().hover(function() { 275 $(this).css({ 'background' : 'url(' + settings.imageBtnPrev + ') left 15% no-repeat' }); 276 },function() { 277 $(this).css({ 'background' : 'transparent url(' + settings.imageBlank + ') no-repeat' }); 278 }).show().bind('click',function() { 279 settings.activeImage = settings.activeImage - 1; 280 _set_image_to_view(); 281 return false; 282 }); 283 } 284 } 285 286 // Show the next button, if not the last image in set 287 if ( settings.activeImage != ( settings.imageArray.length -1 ) ) { 288 if ( settings.fixedNavigation ) { 289 $('#lightbox-nav-btnNext').css({ 'background' : 'url(' + settings.imageBtnNext + ') right 15% no-repeat' }) 290 .unbind() 291 .bind('click',function() { 292 settings.activeImage = settings.activeImage + 1; 293 _set_image_to_view(); 294 return false; 295 }); 296 } else { 297 // Show the images button for Next buttons 298 $('#lightbox-nav-btnNext').unbind().hover(function() { 299 $(this).css({ 'background' : 'url(' + settings.imageBtnNext + ') right 15% no-repeat' }); 300 },function() { 301 $(this).css({ 'background' : 'transparent url(' + settings.imageBlank + ') no-repeat' }); 302 }).show().bind('click',function() { 303 settings.activeImage = settings.activeImage + 1; 304 _set_image_to_view(); 305 return false; 306 }); 307 } 308 } 309 // Enable keyboard navigation 310 _enable_keyboard_navigation(); 311 } 312 /** 313 * Enable a support to keyboard navigation 314 * 315 */ 316 function _enable_keyboard_navigation() { 317 $(document).keydown(function(objEvent) { 318 _keyboard_action(objEvent); 319 }); 320 } 321 /** 322 * Disable the support to keyboard navigation 323 * 324 */ 325 function _disable_keyboard_navigation() { 326 $(document).unbind(); 327 } 328 /** 329 * Perform the keyboard actions 330 * 331 */ 332 function _keyboard_action(objEvent) { 333 // To ie 334 if ( objEvent == null ) { 335 keycode = event.keyCode; 336 escapeKey = 27; 337 // To Mozilla 338 } else { 339 keycode = objEvent.keyCode; 340 escapeKey = objEvent.DOM_VK_ESCAPE; 341 } 342 // Get the key in lower case form 343 key = String.fromCharCode(keycode).toLowerCase(); 344 // Verify the keys to close the ligthBox 345 if ( ( key == settings.keyToClose ) || ( key == 'x' ) || ( keycode == escapeKey ) ) { 346 _finish(); 347 }
348 // Verify the key to show the previous image 349 if ( ( key == settings.keyToPrev ) || ( keycode == 37 ) ) { 350 // If we´re not showing the first image, call the previous 351 if ( settings.activeImage != 0 ) { 352 settings.activeImage = settings.activeImage - 1; 353 _set_image_to_view(); 354 _disable_keyboard_navigation(); 355 } 356 } 357 // Verify the key to show the next image 358 if ( ( key == settings.keyToNext ) || ( keycode == 39 ) ) { 359 // If we´re not showing the last image, call the next 360 if ( settings.activeImage != ( settings.imageArray.length - 1 ) ) { 361 settings.activeImage = settings.activeImage + 1; 362 _set_image_to_view(); 363 _disable_keyboard_navigation(); 364 } 365 } 366 } 367 /** 368 * Preload prev and next images being showed 369 * 370 */ 371 function _preload_neighbor_images() { 372 if ( (settings.imageArray.length -1) > settings.activeImage ) { 373 objNext = new Image(); 374 objNext.src = settings.imageArray[settings.activeImage + 1][0]; 375 } 376 if ( settings.activeImage > 0 ) { 377 objPrev = new Image(); 378 objPrev.src = settings.imageArray[settings.activeImage -1][0]; 379 } 380 } 381 /** 382 * Remove jQuery lightBox plugin HTML markup 383 * 384 */ 385 function _finish() { 386 $('#jquery-lightbox').remove(); 387 $('#jquery-overlay').fadeOut(function() { $('#jquery-overlay').remove(); }); 388 // Show some elements to avoid conflict with overlay in IE. These elements appear above the overlay. 389 $('embed, object, select').css({ 'visibility' : 'visible' }); 390 } 391 /** 392 / THIRD FUNCTION 393 * getPageSize() by quirksmode.com 394 * 395 * @return Array Return an array with page width, height and window width, height 396 */ 397 function ___getPageSize() { 398 var xScroll, yScroll; 399 if (window.innerHeight && window.scrollMaxY) { 400 xScroll = window.innerWidth + window.scrollMaxX; 401 yScroll = window.innerHeight + window.scrollMaxY; 402 } else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac 403 xScroll = document.body.scrollWidth; 404 yScroll = document.body.scrollHeight; 405 } else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari 406 xScroll = document.body.offsetWidth; 407 yScroll = document.body.offsetHeight; 408 } 409 var windowWidth, windowHeight; 410 if (self.innerHeight) { // all except Explorer 411 if(document.documentElement.clientWidth){ 412 windowWidth = document.documentElement.clientWidth; 413 } else { 414 windowWidth = self.innerWidth; 415 } 416 windowHeight = self.innerHeight; 417 } else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode 418 windowWidth = document.documentElement.clientWidth; 419 windowHeight = document.documentElement.clientHeight; 420 } else if (document.body) { // other Explorers 421 windowWidth = document.body.clientWidth; 422 windowHeight = document.body.clientHeight; 423 } 424 // for small pages with total height less then height of the viewport 425 if(yScroll < windowHeight){ 426 pageHeight = windowHeight; 427 } else { 428 pageHeight = yScroll; 429 } 430 // for small pages with total width less then width of the viewport 431 if(xScroll < windowWidth){ 432 pageWidth = xScroll; 433 } else { 434 pageWidth = windowWidth; 435 } 436 arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight); 437 return arrayPageSize; 438 }; 439 /** 440 / THIRD FUNCTION 441 * getPageScroll() by quirksmode.com 442 * 443 * @return Array Return an array with x,y page scroll values. 444 */ 445 function ___getPageScroll() { 446 var xScroll, yScroll; 447 if (self.pageYOffset) { 448 yScroll = self.pageYOffset; 449 xScroll = self.pageXOffset; 450 } else if (document.documentElement && document.documentElement.scrollTop) { // Explorer 6 Strict 451 yScroll = document.documentElement.scrollTop; 452 xScroll = document.documentElement.scrollLeft; 453 } else if (document.body) {// all other Explorers 454 yScroll = document.body.scrollTop; 455 xScroll = document.body.scrollLeft; 456 } 457 arrayPageScroll = new Array(xScroll,yScroll); 458 return arrayPageScroll; 459 }; 460 /** 461 * Stop the code execution from a escified time in milisecond 462 * 463 */ 464 function ___pause(ms) { 465 var date = new Date(); 466 curDate = null; 467 do { var curDate = new Date(); } 468 while ( curDate - date < ms); 469 }; 470 // Return the jQuery object for chaining. The unbind method is used to avoid click conflict when the plugin is called more than once 471 return this.unbind('click').click(_initialize); 472 }; 473})(jQuery); // Call and execute the function immediately passing the jQuery object
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