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) {
53 Roo.apply(Roo.ux.Lightbox.prototype,
57 * @cfg fileLoadingImage {string} loading image
59 fileLoadingImage: '/lightbox/images/loading.gif',
61 * @cfg fileBottomNavCloseImage {string} close image
63 fileBottomNavCloseImage: '/lightbox/images/closelabel.gif',
65 * @cfg overlayOpacity {number} controls transparency of shadow overlay
69 * @cfg fileLoadingImage {boolean} toggles resizing animations
73 * @cfg resizeSpeed {number} controls the speed of the image
74 * resizing animations (1=slowest and 10=fastest)
78 * @cfg borderSize {number} if you adjust the padding in the CSS,
79 * you will need to update this variable
83 * @cfg labelImage {string} When grouping images this is used to write: Image # of #.
84 * Change it for non-english localization
88 * @cfg labelOf {string} When grouping images this is used to write: Image # of #.
105 activeImage: undefined,
109 * Constructor runs on completion of the DOM loading. Calls updateImageList and then
110 * the function inserts html at the bottom of the page which is used to display the shadow
111 * overlay and the image container.
115 initialize: function() {
117 this.updateImageList();
118 this.initializeCSS();
119 // TBD this.keyboardAction = this.keyboardAction.bindAsEventListener(this);
120 this.resizeSpeed = Math.min(this.resizeSpeed, 10);
121 this.resizeSpeed = Math.max(this.resizeSpeed, 1);
123 this.resizeDuration = this.animate ? ((11 - this.resizeSpeed) * 0.15) : 0;
124 this.overlayDuration = this.animate ? 0.2 : 0; // shadow fade in/out duration
126 // When Lightbox starts it will resize itself from 250 by 250 to the current image dimension.
127 // If animations are turned off, it will be hidden as to prevent a flicker of a
128 // white 250 by 250 box.
129 var size = (this.animate ? 250 : 1) + 'px';
130 var dh = Roo.DomHelper;
131 this.el = Roo.DomHelper.append(document.body, {
133 '<div class="roo-lightbox-overlay"></div>' +
134 '<div class="roo-lightbox">' +
135 ' <div class="outer-image-container">' +
136 ' <div class="image-container">' +
137 ' <img class="lightbox-image">' +
138 ' <div style="" class="hover-nav">' +
139 ' <a href="#" class="prev-link"></a>' +
140 ' <a href="#" class="next-link"></a>' +
142 ' <div class="loading">' +
143 ' <a href="#" class="loading-link"> </a>' +
147 ' <div class="image-data-container">' +
148 ' <div class="image-data">' +
149 ' <div class="image-details">' +
150 ' <span class="caption"></span>' +
151 ' <span class="number-display"></span>' +
153 ' <div class="bottom-nav">' +
154 ' <div href="#" class="bottom-nav-close"></div>' +
165 var ids = 'roo-lightbox outer-image-container image-container ' +
166 'lightbox-image hover-nav prev-link next-link loading loading-link ' +
167 'image-data-container image-data image-details caption number-display ' +
168 'bottom-nav bottom-nav-close roo-lightbox-overlay';
170 Roo.each(ids.split(' '),
172 var vid = id.replace(/\-/g,'');
174 th[vid] = th.el.child('.'+id);
179 th[vid].setVisibilityMode(Roo.Element.DISPLAY);
181 this.lightbox = this.roolightbox;
183 this.overlay = this.roolightboxoverlay;
186 this.lightbox.hide();
187 this.lightbox.on('click', function(event) {
188 if (Roo.get(event.getTarget()).hasClass('roo-lightbox')) {
193 this.outerimagecontainer.setStyle({ width: size, height: size });
195 this.prevlink.on('click',
198 this.changeImage(this.activeImage - 1);
201 this.nextlink.on('click',
204 this.changeImage(this.activeImage + 1);
207 this.loadinglink.on('click',
213 this.bottomnavclose.on('click',
219 this.overlay.on('click',
227 initializeCSS: function() {
228 if (typeof(Roo.ux.Lightbox.css) != 'undefined') {
231 Roo.ux.Lightbox.css = Roo.util.CSS.createStyleSheet( {
233 position: 'absolute',
236 'text-align': 'center',
239 '.roo-lightbox a img' : { border: 'none' },
240 '.roo-lightbox .outer-image-container' : {
241 position: 'relative',
242 'background-color': '#fff',
248 '.roo-lightbox image-container' :{ padding: '10px' },
250 '.roo-lightbox .loading' : {
256 'text-align':'center',
260 '.roo-lightbox loading a' : {
261 background:'url(../images/loading.gif) 0 0 no-repeat',
267 '.roo-lightbox bottom-nav-close' : {
268 background:'url(../images/close.gif) 0 0 no-repeat',
273 '.roo-lightbox .hoverNav' :{
281 '.roo-lightbox .image-container>.hover-nav' :{ left:'0' },
282 '.roo-lightbox .hover-nav a' :{ outline:'none'},
284 '.roo-lightbox .prev-link, .roo-lightbox .next-link' : {
287 'background-image':'url(data:image/gif;base64,AAAA)',
290 '.roo-lightbox .prev-link' : { left:'0','float':'left'},
291 '.roo-lightbox .next-link' : { right:'0','float':'right'},
292 '.roo-lightbox .prev-link:hover, .roo-lightbox .prev-link:visited:hover ' :{
293 background:'url(../images/prevlabel.gif) left 15% no-repeat'
295 '.roo-lightbox .next-link:hover, .roo-lightbox .next-link:visited:hover ' :{
296 background:'url(../images/nextlabel.gif) right 15% no-repeat'
299 '.roo-lightbox .image-data-container' : {
300 font: '10px Verdana, Helvetica, sans-serif',
301 'background-color': '#fff',
303 'line-height': '1.4em',
308 '.roo-lightbox .image-data' : { padding:'0 10px', color: '#666' },
309 '.roo-lightbox .image-data .image-details ' : { width: '70%', 'float': 'left', 'text-align': 'left'} ,
310 '.roo-lightbox .image-data .caption' : { 'font-weight': 'bold' },
311 '.roo-lightbox .image-data .numberDisplay' : { 'display': 'block', clear: 'left', 'padding-bottom': '1.0em' } ,
312 '.roo-lightbox .image-data .bottomNavClose' : { 'float': 'right', 'padding-bottom': '0.7em','outline': 'none'} ,
313 '.roo-lightbox-overlay' : {
314 'background-color': 'black',
317 position: 'absolute',
329 * Loops through anchor tags looking for 'lightbox' references and applies onclick
330 * events to appropriate links. You can rerun after dynamically adding images w/ajax.
333 updateImageList: function() {
334 this.updateImageList = Roo.emptyFn;
335 if (this.imageArray.length) {
338 Roo.each(Roo.DomQuery.select('a[rel^=lightbox]'), function(e) {
339 this.imageArray.push(Roo.get(e));
340 Roo.get(e).on('click', (function(event, tg, tga,tgb) {
345 }).createDelegate(this, [e], true));
352 * Display overlay and lightbox. If image is part of a set, add siblings to imageArray.
354 start: function(imageLink) {
356 // hide all the objects that cause problems..
357 $$('select', 'object', 'embed').each(
359 node.style.visibility = 'hidden' }
362 // stretch overlay to fill page and fade in
363 //var arrayPageSize = this.getPageSize();
365 this.overlay.setHeight(Roo.lib.Dom.getDocumentHeight()) ;
366 this.overlay.setWidth(Roo.lib.Dom.getDocumentWidth());
367 this.overlay.fadeIn({
368 endOpacity: this.overlayOpacity,
370 duration: this.overlayDuration
373 //this.imageArray = [];
377 imageLink = Roo.get(imageLink);
378 //console.log(imageLink.id);
379 Roo.each(this.imageArray, function (e, i) {
380 // console.log(e.id);
381 if (e.id == imageLink.id) {
387 // let's assume the constructor sorts out the list of images..
389 if ((imageLink.rel == 'lightbox')){
390 // if image is NOT part of a set, add single image to imageArray
391 this.imageArray.push([imageLink.href, imageLink.title]);
393 // if image is part of a set..
395 $$(imageLink.tagName + '[href][rel="' + imageLink.rel + '"]').
396 collect(function(anchor){ return [anchor.href, anchor.title]; }).
399 while (this.imageArray[imageNum][0] != imageLink.href) { imageNum++; }
402 var s = Roo.get(document).getScroll();
404 // calculate top and left offset for the lightbox
406 var lightboxTop = s.top + (Roo.lib.Dom.getViewHeight() / 10);
407 var lightboxLeft = s.left
408 this.lightbox.setStyle({
409 top: lightboxTop + 'px',
410 left: lightboxLeft + 'px' ,
413 //console.log("show lightbox");
414 this.lightbox.show();
418 this.changeImage(imageNum);
423 // Hide most elements and preload image in preparation for resizing image container.
425 changeImage: function(imageNum) {
427 this.activeImage = imageNum; // update global var
429 // hide elements during transition
431 this.loading.setStyle({
435 this.loadinglink.setX( (Roo.lib.Dom.getViewWidth() / 2) - 16);
436 //this.loadingLink.show();
437 // center the loading?
441 this.hovernav.hide();
442 this.prevlink.hide();
443 this.nextlink.hide();
444 // HACK: Opera9 does not currently support scriptaculous opacity and appear fx
445 this.imagedatacontainer.setStyle({opacity: .0001});
446 this.numberdisplay.hide();
448 var imgPreloader = Roo.DomHelper.append(document.body, { tag: 'img' } , true);
449 // once image is preloaded, resize image container
451 imgPreloader.on('load', function() {
453 this.lightboximage.dom.src = this.imageArray[this.activeImage].dom.href;
455 this.resizeImageContainer(imgPreloader.getWidth(), imgPreloader.getHeight());
456 imgPreloader.remove();
458 imgPreloader.dom.src = this.imageArray[this.activeImage].dom.href;
464 // resizeImageContainer()
466 resizeImageContainer: function(imgWidth, imgHeight) {
468 // make sure we have some sensible sizes..
469 imgWidth = Math.max(50, imgWidth);
470 imgHeight = Math.max(50, imgHeight);
472 // get current width and height
473 var widthCurrent = this.outerimagecontainer.getWidth();
474 var heightCurrent = this.outerimagecontainer.getHeight();
476 //fixme need better calcs.
478 var ww = w.innerWidth || (w.document.documentElement.clientWidth || w.document.body.clientWidth);
479 var wh = w.innerHeight || (w.document.documentElement.clientHeight || w.document.body.clientHeight);
483 // get new width and height
484 var bs = this.borderSize * 2;
486 var widthNew = imgWidth + bs;
487 var heightNew = imgHeight + bs;
489 if (widthNew > ww || heightNew > wh) {
490 // bigger than window.
491 // scale here... - bit nasty..
492 var rescale = 1.1 * Math.max( widthNew / ww , heightNew / wh);
493 //console.log(rescale);
494 imgWidth = Math.floor(imgWidth / rescale);
495 imgHeight = Math.floor(imgHeight / rescale);
496 widthNew = imgWidth + bs;
497 heightNew = imgHeight + bs;
502 this.lightboximage.set( { width : imgWidth, height : imgHeight });
505 // scalars based on change from old to new
506 var xScale = (widthNew / widthCurrent) * 100;
507 var yScale = (heightNew / heightCurrent) * 100;
509 // calculate size difference between new and old image, and resize if necessary
510 var wDiff = widthCurrent - widthNew;
511 var hDiff = heightCurrent - heightNew;
514 this.outerimagecontainer.animate(
515 { width: {to: widthNew}, height: {to: heightNew} },
524 // if new and old image are same size and no scaling transition is necessary,
525 // do a quick pause to prevent image flicker.
527 if ((hDiff == 0) && (wDiff == 0)){
529 if (Roo.isIE) timeout = 250;
533 this.prevlink.setStyle({ height: imgHeight + 'px' });
534 this.nextlink.setStyle({ height: imgHeight + 'px' });
535 this.imagedatacontainer.setStyle({ width: widthNew + 'px'}); // the text area..
537 }).defer(timeout / 1000, this);
542 // Display image and begin preloading neighbors.
544 showImage: function(){
547 //this.loadingLink.hide();
549 this.lightboximage.animate(
551 opacity : { to: 1.0 }
555 _this.updateDetails();
559 this.preloadNeighborImages();
564 // Display caption, image number, and bottom nav.
566 updateDetails: function() {
568 // if caption is not null
569 if (this.imageArray[this.activeImage].dom.title != ""){
570 this.caption.update(this.imageArray[this.activeImage].dom.title);
574 // if image is part of set display 'Image x of x'
575 if (this.imageArray.length > 1){
576 this.numberdisplay.update(
577 this.labelImage + ' ' + (this.activeImage + 1) + ' ' + this.labelOf + ' ' + this.imageArray.length)
578 this.numberdisplay.show();
581 this.imagedatacontainer.animate(
583 //slide down ?: , from: 0.0, to: 1.0
584 opacity : { to: 1.0 }
588 // update overlay size and update nav
589 //var arrayPageSize = this.getPageSize();
590 //this.overlay.setStyle({ height: arrayPageSize[1] + 'px' });
599 // Display appropriate previous and next hover navigation.
601 updateNav: function() {
603 this.hovernav.show();
605 // if not first image in set, display prev image button
606 if (this.activeImage > 0) this.prevlink.show();
608 // if not last image in set, display next image button
609 if (this.activeImage < (this.imageArray.length - 1)) this.nextlink.show();
611 this.enableKeyboardNav();
615 // enableKeyboardNav()
617 enableKeyboardNav: function() {
618 Roo.get(document.body).on('keydown', this.keyboardAction, this);
622 // disableKeyboardNav()
624 disableKeyboardNav: function() {
625 Roo.get(document.body).un('keydown', this.keyboardAction, this);
631 keyboardAction: function(event)
633 var keycode = event.keyCode;
636 if (event.DOM_VK_ESCAPE) { // mozilla
637 escapeKey = event.DOM_VK_ESCAPE;
642 var key = String.fromCharCode(keycode).toLowerCase();
644 if (key.match(/x|o|c/) || (keycode == escapeKey)){ // close lightbox
646 } else if ((key == 'p') || (keycode == 37)){ // display previous image
647 if (this.activeImage != 0){
648 this.disableKeyboardNav();
649 this.changeImage(this.activeImage - 1);
651 } else if ((key == 'n') || (keycode == 39)){ // display next image
652 if (this.activeImage != (this.imageArray.length - 1)){
653 this.disableKeyboardNav();
654 this.changeImage(this.activeImage + 1);
660 // preloadNeighborImages()
661 // Preload previous and next images.
663 preloadNeighborImages: function(){
664 var preloadNextImage, preloadPrevImage;
665 if (this.imageArray.length > this.activeImage + 1){
666 preloadNextImage = Roo.DomHelper.append(document.body, { tag: 'img' } , true);
667 preloadNextImage.on('load', function() { preloadNextImage.remove() });
668 preloadNextImage.dom.src = this.imageArray[this.activeImage + 1].dom.href;
670 if (this.activeImage > 0){
671 preloadPrevImage = Roo.DomHelper.append(document.body, { tag: 'img' } , true);
672 preloadPrevImage.on('load', function() { preloadPrevImage.remove() });
673 preloadPrevImage.dom.src = this.imageArray[this.activeImage - 1].dom.href;
682 this.disableKeyboardNav();
683 //console.log('lightbox hide');
684 this.lightbox.hide();
687 Roo.get(document.body).unmask();
688 // show all the objects that cause problems..
689 //$$('select', 'object', 'embed').each(function(node){ node.style.visibility = 'visible' });