1 /* <script type="text/javascript">
2 // -----------------------------------------------------------------------------------
3 // Roo lightbox - based on..
6 // by Lokesh Dhakar - http://www.lokeshdhakar.com
7 // Last Modification: 2/9/08
9 // For more information, visit:
10 // http://lokeshdhakar.com/projects/lightbox2/
12 // Licensed under the Creative Commons Attribution 2.5 License - http://creativecommons.org/licenses/by/2.5/
13 // - Free for use in both personal and commercial projects
14 // - Attribution requires leaving author name, author link, and the license info intact.
16 // Thanks: Scott Upton(uptonic.com), Peter-Paul Koch(quirksmode.com), and Thomas Fuchs(mir.aculo.us) for ideas, libs, and snippets.
17 // Artemy Tregubenko (arty.name) for cleanup and help in updating to latest ver of proto-aculous.
19 // -----------------------------------------------------------------------------------
26 Lightbox Class Declaration
31 - resizeImageContainer()
36 - disableKeyboardNav()
38 - preloadNeighborImages()
45 Roo.namespace('Roo.ux');
47 Roo.ux.Lightbox = function(cfg) {
52 Roo.apply(Roo.ux.Lightbox.prototype,
56 * @cfg fileLoadingImage {string} loading image
58 fileLoadingImage: '/lightbox/images/loading.gif',
60 * @cfg fileBottomNavCloseImage {string} close image
62 fileBottomNavCloseImage: '/lightbox/images/closelabel.gif',
64 * @cfg overlayOpacity {number} controls transparency of shadow overlay
68 * @cfg fileLoadingImage {boolean} toggles resizing animations
72 * @cfg resizeSpeed {number} controls the speed of the image
73 * resizing animations (1=slowest and 10=fastest)
77 * @cfg borderSize {number} if you adjust the padding in the CSS,
78 * you will need to update this variable
82 * @cfg labelImage {string} When grouping images this is used to write: Image # of #.
83 * Change it for non-english localization
87 * @cfg labelOf {string} When grouping images this is used to write: Image # of #.
104 activeImage: undefined,
108 * Constructor runs on completion of the DOM loading. Calls updateImageList and then
109 * the function inserts html at the bottom of the page which is used to display the shadow
110 * overlay and the image container.
114 initialize: function() {
116 this.updateImageList();
118 // TBD this.keyboardAction = this.keyboardAction.bindAsEventListener(this);
119 this.resizeSpeed = Math.min(this.resizeSpeed, 10);
120 this.resizeSpeed = Math.max(this.resizeSpeed, 1);
122 this.resizeDuration = this.animate ? ((11 - this.resizeSpeed) * 0.15) : 0;
123 this.overlayDuration = this.animate ? 0.2 : 0; // shadow fade in/out duration
125 // When Lightbox starts it will resize itself from 250 by 250 to the current image dimension.
126 // If animations are turned off, it will be hidden as to prevent a flicker of a
127 // white 250 by 250 box.
128 var size = (this.animate ? 250 : 1) + 'px';
129 var dh = Roo.DomHelper;
130 this.el = dh.append(document.body, {
132 // '<div id="overlay"></div>' +
133 '<div id="lightbox">' +
134 ' <div id="outerImageContainer">' +
135 ' <div id="imageContainer">' +
136 ' <img id="lightboxImage">' +
137 ' <div style="" id="hoverNav">' +
138 ' <a href="#" id="prevLink"></a>' +
139 ' <a href="#" id="nextLink"></a>' +
141 ' <div id="loading">' +
142 ' <a href="#" id="loadingLink">' +
143 ' <img src="images/loading.gif">' +
148 ' <div id="imageDataContainer">' +
149 ' <div id="imageData">' +
150 ' <div id="imageDetails">' +
151 ' <span id="caption"></span>' +
152 ' <span id="numberDisplay"></span>' +
154 ' <div id="bottomNav">' +
155 ' <a href="#" id="bottomNavClose">' +
156 ' <img src="images/close.gif">' +
168 //Roo.get('overlay').hide();
169 //Roo.get('overlay').on('click', this.end, this);
170 Roo.get('lightbox').hide();
171 Roo.get('lightbox').on('click', function(event) {
172 if (event.element().id == 'lightbox') this.end();
175 Roo.get('outerImageContainer').setStyle({ width: size, height: size });
177 Roo.get('prevLink').on('click',
180 this.changeImage(this.activeImage - 1);
183 Roo.get('nextLink').on('click',
186 this.changeImage(this.activeImage + 1);
189 Roo.get('loadingLink').on('click',
195 Roo.get('bottomNavClose').on('click',
204 'lightbox outerImageContainer imageContainer ' +
205 'lightboxImage hoverNav prevLink nextLink loading loadingLink ' +
206 'imageDataContainer imageData imageDetails caption numberDisplay '
207 'bottomNav bottomNavClose';
209 Roo.each(ids.split(' '),
211 th[id] = Roo.get(id);
218 * Loops through anchor tags looking for 'lightbox' references and applies onclick
219 * events to appropriate links. You can rerun after dynamically adding images w/ajax.
222 updateImageList: function() {
223 this.updateImageList = Roo.emptyFn;
225 Roo.each(Roo.DomQuery.select('a[rel^=lightbox]'), function(e) {
226 this.imageArray.push(Roo.get(e));
227 Roo.get(e).on('click', function(event) {
228 event.stopPropagation();
237 * Display overlay and lightbox. If image is part of a set, add siblings to imageArray.
239 start: function(imageLink) {
241 // hide all the objects that cause problems..
242 $$('select', 'object', 'embed').each(
244 node.style.visibility = 'hidden' }
247 // stretch overlay to fill page and fade in
248 //var arrayPageSize = this.getPageSize();
251 this._mask = Roo.DomHelper.append(document.body, {cls:"roo-el-mask"}, true);
252 this._mask.on('click', this.end, this);
254 this._mask.setDisplayed(true); // no animation..
256 // ie will not expand full height automatically
257 if(Roo.isIE && !(Roo.isIE7 && Roo.isStrict) && this.getStyle('height') == 'auto'){
258 this._mask.setHeight( Roo.lib.Dom.getViewHeight());
261 //new Effect.Appear(this.overlay,
262 // { duration: this.overlayDuration, from: 0.0, to: this.overlayOpacity });
264 //this.imageArray = [];
267 // let's assume the constructor sorts out the list of images..
269 if ((imageLink.rel == 'lightbox')){
270 // if image is NOT part of a set, add single image to imageArray
271 this.imageArray.push([imageLink.href, imageLink.title]);
273 // if image is part of a set..
275 $$(imageLink.tagName + '[href][rel="' + imageLink.rel + '"]').
276 collect(function(anchor){ return [anchor.href, anchor.title]; }).
279 while (this.imageArray[imageNum][0] != imageLink.href) { imageNum++; }
282 var s = Roo.get(document).getScroll();
284 // calculate top and left offset for the lightbox
286 var lightboxTop = s.top + (Roo.lib.Dom.getViewHeight() / 10);
287 var lightboxLeft = s.left
288 this.lightbox.setStyle({ top: lightboxTop + 'px', left: lightboxLeft + 'px' })
289 this.lightbox.show();
291 this.changeImage(imageNum);
296 // Hide most elements and preload image in preparation for resizing image container.
298 changeImage: function(imageNum) {
300 this.activeImage = imageNum; // update global var
302 // hide elements during transition
306 this.lightboxImage.hide();
308 this.hoverNav.hide();
309 this.prevLink.hide();
310 this.nextLink.hide();
311 // HACK: Opera9 does not currently support scriptaculous opacity and appear fx
312 this.imageDataContainer.setStyle({opacity: .0001});
313 this.numberDisplay.hide();
315 var imgPreloader = Roo.DomHelper.append(document.body, { tag: 'img' } , true);
316 // once image is preloaded, resize image container
319 imgPreloader.on('load', function() {
320 this.lightboxImage.src = this.imageArray[this.activeImage].dom.href;
321 this.resizeImageContainer(imgPreloader.getWidth(), imgPreloader.getHeight());
323 imgPreloader.src = this.imageArray[this.activeImage].dom.href;
327 // resizeImageContainer()
329 resizeImageContainer: function(imgWidth, imgHeight) {
331 // make sure we have some sensible sizes..
332 imgWidth = Math.max(50, imgWidth);
333 imgHeight = Math.max(50, imgHeight);
335 // get current width and height
336 var widthCurrent = this.outerImageContainer.getWidth();
337 var heightCurrent = this.outerImageContainer.getHeight();
339 //fixme need better calcs.
341 var ww = w.innerWidth || (w.document.documentElement.clientWidth || w.document.body.clientWidth);
342 var wh = w.innerHeight || (w.document.documentElement.clientHeight || w.document.body.clientHeight);
346 // get new width and height
347 var bs = this.borderSize * 2;
349 var widthNew = imgWidth + bs;
350 var heightNew = imgHeight + bs;
352 if (widthNew > ww || heightNew > wh) {
353 // bigger than window.
354 // scale here... - bit nasty..
355 var rescale = 1.1 * Math.max( widthNew / ww , heightNew / wh);
356 //console.log(rescale);
357 imgWidth = Math.floor(imgWidth / rescale);
358 imgHeight = Math.floor(imgHeight / rescale);
359 widthNew = imgWidth + bs;
360 heightNew = imgHeight + bs;
365 this.lightboxImage.set( { width : imgWidth, height : imgHeight });
368 // scalars based on change from old to new
369 var xScale = (widthNew / widthCurrent) * 100;
370 var yScale = (heightNew / heightCurrent) * 100;
372 // calculate size difference between new and old image, and resize if necessary
373 var wDiff = widthCurrent - widthNew;
374 var hDiff = heightCurrent - heightNew;
377 this.outerImageContainer.animate(
378 { width: {to: widthNew}, height: {to: heightNew} },
387 // if new and old image are same size and no scaling transition is necessary,
388 // do a quick pause to prevent image flicker.
390 if ((hDiff == 0) && (wDiff == 0)){
392 if (Roo.isIE) timeout = 250;
396 this.prevLink.setStyle({ height: imgHeight + 'px' });
397 this.nextLink.setStyle({ height: imgHeight + 'px' });
398 this.imageDataContainer.setStyle({ width: widthNew + 'px', width: heightNew + 'px', });
400 }).defer(timeout / 1000, this);
405 // Display image and begin preloading neighbors.
407 showImage: function(){
410 this.lightboxImage.animate(
412 opacity : { from : 0.0 , to: 1.0 }
415 _this.updateDetails();
419 this.preloadNeighborImages();
424 // Display caption, image number, and bottom nav.
426 updateDetails: function() {
428 // if caption is not null
429 if (this.imageArray[this.activeImage].dom.title != ""){
430 this.caption.update(this.imageArray[this.activeImage].dom.title);
434 // if image is part of set display 'Image x of x'
435 if (this.imageArray.length > 1){
436 this.numberDisplay.update(
437 this.labelImage + ' ' + (this.activeImage + 1) + ' ' + this.labelOf + ' ' + this.imageArray.length)
438 this.numberDisplay.show();
441 this.imageDataContainer.animate(
443 //slide down ?: , from: 0.0, to: 1.0
444 opacity : { from : 0.0 , to: 1.0 }
448 // update overlay size and update nav
449 //var arrayPageSize = this.getPageSize();
450 //this.overlay.setStyle({ height: arrayPageSize[1] + 'px' });
459 // Display appropriate previous and next hover navigation.
461 updateNav: function() {
463 this.hoverNav.show();
465 // if not first image in set, display prev image button
466 if (this.activeImage > 0) this.prevLink.show();
468 // if not last image in set, display next image button
469 if (this.activeImage < (this.imageArray.length - 1)) this.nextLink.show();
471 this.enableKeyboardNav();
475 // enableKeyboardNav()
477 enableKeyboardNav: function() {
478 Roo.get(document.body).on('keydown', this.keyboardAction, this);
482 // disableKeyboardNav()
484 disableKeyboardNav: function() {
485 Roo.get(document.body).un('keydown', this.keyboardAction, this);
491 keyboardAction: function(event) {
492 var keycode = event.keyCode;
495 if (event.DOM_VK_ESCAPE) { // mozilla
496 escapeKey = event.DOM_VK_ESCAPE;
501 var key = String.fromCharCode(keycode).toLowerCase();
503 if (key.match(/x|o|c/) || (keycode == escapeKey)){ // close lightbox
505 } else if ((key == 'p') || (keycode == 37)){ // display previous image
506 if (this.activeImage != 0){
507 this.disableKeyboardNav();
508 this.changeImage(this.activeImage - 1);
510 } else if ((key == 'n') || (keycode == 39)){ // display next image
511 if (this.activeImage != (this.imageArray.length - 1)){
512 this.disableKeyboardNav();
513 this.changeImage(this.activeImage + 1);
519 // preloadNeighborImages()
520 // Preload previous and next images.
522 preloadNeighborImages: function(){
523 var preloadNextImage, preloadPrevImage;
524 if (this.imageArray.length > this.activeImage + 1){
525 preloadNextImage = Roo.DomHelper.append(document.body, { tag: 'img' } , true);
526 preloadNextImage.src = this.imageArray[this.activeImage + 1].dom.href;
528 if (this.activeImage > 0){
529 preloadPrevImage = Roo.DomHelper.append(document.body, { tag: 'img' } , true);
530 preloadPrevImage.src = this.imageArray[this.activeImage - 1].dom.href;
539 this.disableKeyboardNav();
540 this.lightbox.hide();
542 // show all the objects that cause problems..
543 //$$('select', 'object', 'embed').each(function(node){ node.style.visibility = 'visible' });