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"> </a>' +
146 ' <div id="imageDataContainer">' +
147 ' <div id="imageData">' +
148 ' <div id="imageDetails">' +
149 ' <span id="caption"></span>' +
150 ' <span id="numberDisplay"></span>' +
152 ' <div id="bottomNav">' +
153 ' <div href="#" id="bottomNavClose"></div>' +
165 'lightbox outerImageContainer imageContainer ' +
166 'lightboxImage hoverNav prevLink nextLink loading loadingLink ' +
167 'imageDataContainer imageData imageDetails caption numberDisplay '
168 'bottomNav bottomNavClose';
170 Roo.each(ids.split(' '),
173 th[id] = Roo.get(id);
177 th[id].setVisibilityMode(Roo.Element.DISPLAY);
181 //Roo.get('overlay').hide();
182 //Roo.get('overlay').on('click', this.end, this);
183 Roo.get('lightbox').hide();
184 Roo.get('lightbox').on('click', function(event) {
185 if (event.getTarget().id == 'lightbox') {
190 Roo.get('outerImageContainer').setStyle({ width: size, height: size });
192 Roo.get('prevLink').on('click',
195 this.changeImage(this.activeImage - 1);
198 Roo.get('nextLink').on('click',
201 this.changeImage(this.activeImage + 1);
204 Roo.get('loadingLink').on('click',
210 Roo.get('bottomNavClose').on('click',
221 * Loops through anchor tags looking for 'lightbox' references and applies onclick
222 * events to appropriate links. You can rerun after dynamically adding images w/ajax.
225 updateImageList: function() {
226 this.updateImageList = Roo.emptyFn;
228 Roo.each(Roo.DomQuery.select('a[rel^=lightbox]'), function(e) {
229 this.imageArray.push(Roo.get(e));
230 Roo.get(e).on('click', (function(event, tg, tga,tgb) {
235 }).createDelegate(this, [e], true));
242 * Display overlay and lightbox. If image is part of a set, add siblings to imageArray.
244 start: function(imageLink) {
246 // hide all the objects that cause problems..
247 $$('select', 'object', 'embed').each(
249 node.style.visibility = 'hidden' }
252 // stretch overlay to fill page and fade in
253 //var arrayPageSize = this.getPageSize();
254 Roo.get(document.body).mask(false);
255 Roo.get(document.body)._mask.setHeight(Roo.lib.Dom.getDocumentHeight())
256 //new Effect.Appear(this.overlay,
257 // { duration: this.overlayDuration, from: 0.0, to: this.overlayOpacity });
259 //this.imageArray = [];
263 imageLink = Roo.get(imageLink);
264 //console.log(imageLink.id);
265 Roo.each(this.imageArray, function (e, i) {
266 // console.log(e.id);
267 if (e.id == imageLink.id) {
273 // let's assume the constructor sorts out the list of images..
275 if ((imageLink.rel == 'lightbox')){
276 // if image is NOT part of a set, add single image to imageArray
277 this.imageArray.push([imageLink.href, imageLink.title]);
279 // if image is part of a set..
281 $$(imageLink.tagName + '[href][rel="' + imageLink.rel + '"]').
282 collect(function(anchor){ return [anchor.href, anchor.title]; }).
285 while (this.imageArray[imageNum][0] != imageLink.href) { imageNum++; }
288 var s = Roo.get(document).getScroll();
290 // calculate top and left offset for the lightbox
292 var lightboxTop = s.top + (Roo.lib.Dom.getViewHeight() / 10);
293 var lightboxLeft = s.left
294 this.lightbox.setStyle({
295 top: lightboxTop + 'px',
296 left: lightboxLeft + 'px' ,
297 zIndex : Roo.get(document.body)._mask.getStyle('zIndex') * 1.1
299 //console.log("show lightbox");
300 this.lightbox.show();
304 this.changeImage(imageNum);
309 // Hide most elements and preload image in preparation for resizing image container.
311 changeImage: function(imageNum) {
313 this.activeImage = imageNum; // update global var
315 // hide elements during transition
317 this.loading.setStyle({
318 zIndex : Roo.get(document.body)._mask.getStyle('zIndex') * 1.2
321 this.loadingLink.setX( (Roo.lib.Dom.getViewWidth() / 2) - 16);
322 //this.loadingLink.show();
323 // center the loading?
327 this.hoverNav.hide();
328 this.prevLink.hide();
329 this.nextLink.hide();
330 // HACK: Opera9 does not currently support scriptaculous opacity and appear fx
331 this.imageDataContainer.setStyle({opacity: .0001});
332 this.numberDisplay.hide();
334 var imgPreloader = Roo.DomHelper.append(document.body, { tag: 'img' } , true);
335 // once image is preloaded, resize image container
338 imgPreloader.on('load', function() {
339 this.lightboxImage.dom.src = this.imageArray[this.activeImage].dom.href;
341 this.resizeImageContainer(imgPreloader.getWidth(), imgPreloader.getHeight());
342 imgPreloader.remove();
344 imgPreloader.dom.src = this.imageArray[this.activeImage].dom.href;
348 // resizeImageContainer()
350 resizeImageContainer: function(imgWidth, imgHeight) {
352 // make sure we have some sensible sizes..
353 imgWidth = Math.max(50, imgWidth);
354 imgHeight = Math.max(50, imgHeight);
356 // get current width and height
357 var widthCurrent = this.outerImageContainer.getWidth();
358 var heightCurrent = this.outerImageContainer.getHeight();
360 //fixme need better calcs.
362 var ww = w.innerWidth || (w.document.documentElement.clientWidth || w.document.body.clientWidth);
363 var wh = w.innerHeight || (w.document.documentElement.clientHeight || w.document.body.clientHeight);
367 // get new width and height
368 var bs = this.borderSize * 2;
370 var widthNew = imgWidth + bs;
371 var heightNew = imgHeight + bs;
373 if (widthNew > ww || heightNew > wh) {
374 // bigger than window.
375 // scale here... - bit nasty..
376 var rescale = 1.1 * Math.max( widthNew / ww , heightNew / wh);
377 //console.log(rescale);
378 imgWidth = Math.floor(imgWidth / rescale);
379 imgHeight = Math.floor(imgHeight / rescale);
380 widthNew = imgWidth + bs;
381 heightNew = imgHeight + bs;
386 this.lightboxImage.set( { width : imgWidth, height : imgHeight });
389 // scalars based on change from old to new
390 var xScale = (widthNew / widthCurrent) * 100;
391 var yScale = (heightNew / heightCurrent) * 100;
393 // calculate size difference between new and old image, and resize if necessary
394 var wDiff = widthCurrent - widthNew;
395 var hDiff = heightCurrent - heightNew;
398 this.outerImageContainer.animate(
399 { width: {to: widthNew}, height: {to: heightNew} },
408 // if new and old image are same size and no scaling transition is necessary,
409 // do a quick pause to prevent image flicker.
411 if ((hDiff == 0) && (wDiff == 0)){
413 if (Roo.isIE) timeout = 250;
417 this.prevLink.setStyle({ height: imgHeight + 'px' });
418 this.nextLink.setStyle({ height: imgHeight + 'px' });
419 this.imageDataContainer.setStyle({ width: widthNew + 'px'}); // the text area..
421 }).defer(timeout / 1000, this);
426 // Display image and begin preloading neighbors.
428 showImage: function(){
431 //this.loadingLink.hide();
433 this.lightboxImage.animate(
435 opacity : { to: 1.0 }
439 _this.updateDetails();
443 this.preloadNeighborImages();
448 // Display caption, image number, and bottom nav.
450 updateDetails: function() {
452 // if caption is not null
453 if (this.imageArray[this.activeImage].dom.title != ""){
454 this.caption.update(this.imageArray[this.activeImage].dom.title);
458 // if image is part of set display 'Image x of x'
459 if (this.imageArray.length > 1){
460 this.numberDisplay.update(
461 this.labelImage + ' ' + (this.activeImage + 1) + ' ' + this.labelOf + ' ' + this.imageArray.length)
462 this.numberDisplay.show();
465 this.imageDataContainer.animate(
467 //slide down ?: , from: 0.0, to: 1.0
468 opacity : { to: 1.0 }
472 // update overlay size and update nav
473 //var arrayPageSize = this.getPageSize();
474 //this.overlay.setStyle({ height: arrayPageSize[1] + 'px' });
483 // Display appropriate previous and next hover navigation.
485 updateNav: function() {
487 this.hoverNav.show();
489 // if not first image in set, display prev image button
490 if (this.activeImage > 0) this.prevLink.show();
492 // if not last image in set, display next image button
493 if (this.activeImage < (this.imageArray.length - 1)) this.nextLink.show();
495 this.enableKeyboardNav();
499 // enableKeyboardNav()
501 enableKeyboardNav: function() {
502 Roo.get(document.body).on('keydown', this.keyboardAction, this);
506 // disableKeyboardNav()
508 disableKeyboardNav: function() {
509 Roo.get(document.body).un('keydown', this.keyboardAction, this);
515 keyboardAction: function(event) {
516 var keycode = event.keyCode;
519 if (event.DOM_VK_ESCAPE) { // mozilla
520 escapeKey = event.DOM_VK_ESCAPE;
525 var key = String.fromCharCode(keycode).toLowerCase();
527 if (key.match(/x|o|c/) || (keycode == escapeKey)){ // close lightbox
529 } else if ((key == 'p') || (keycode == 37)){ // display previous image
530 if (this.activeImage != 0){
531 this.disableKeyboardNav();
532 this.changeImage(this.activeImage - 1);
534 } else if ((key == 'n') || (keycode == 39)){ // display next image
535 if (this.activeImage != (this.imageArray.length - 1)){
536 this.disableKeyboardNav();
537 this.changeImage(this.activeImage + 1);
543 // preloadNeighborImages()
544 // Preload previous and next images.
546 preloadNeighborImages: function(){
547 var preloadNextImage, preloadPrevImage;
548 if (this.imageArray.length > this.activeImage + 1){
549 preloadNextImage = Roo.DomHelper.append(document.body, { tag: 'img' } , true);
550 preloadNextImage.on('load', function() { preloadNextImage.remove() });
551 preloadNextImage.dom.src = this.imageArray[this.activeImage + 1].dom.href;
553 if (this.activeImage > 0){
554 preloadPrevImage = Roo.DomHelper.append(document.body, { tag: 'img' } , true);
555 preloadPrevImage.on('load', function() { preloadPrevImage.remove() });
556 preloadPrevImage.dom.src = this.imageArray[this.activeImage - 1].dom.href;
565 this.disableKeyboardNav();
566 //console.log('lightbox hide');
567 this.lightbox.hide();
569 Roo.get(document.body).unmask();
570 // show all the objects that cause problems..
571 //$$('select', 'object', 'embed').each(function(node){ node.style.visibility = 'visible' });