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 ' <a href="#" id="bottomNavClose">' +
154 ' <img src="images/close.gif">' +
166 //Roo.get('overlay').hide();
167 //Roo.get('overlay').on('click', this.end, this);
168 Roo.get('lightbox').hide();
169 Roo.get('lightbox').on('click', function(event) {
170 if (event.getTarget().id == 'lightbox') {
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(' '),
212 th[id] = Roo.get(id);
216 th[id].setVisibilityMode(Element.DISPLAY);
223 * Loops through anchor tags looking for 'lightbox' references and applies onclick
224 * events to appropriate links. You can rerun after dynamically adding images w/ajax.
227 updateImageList: function() {
228 this.updateImageList = Roo.emptyFn;
230 Roo.each(Roo.DomQuery.select('a[rel^=lightbox]'), function(e) {
231 this.imageArray.push(Roo.get(e));
232 Roo.get(e).on('click', function(event) {
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 $$('select', 'object', 'embed').each(
249 node.style.visibility = 'hidden' }
252 // stretch overlay to fill page and fade in
253 //var arrayPageSize = this.getPageSize();
256 this._mask = Roo.DomHelper.append(document.body, {cls:"roo-el-mask"}, true);
257 this._mask.on('click', this.end, this);
259 this._mask.setDisplayed(true); // no animation..
261 // ie will not expand full height automatically
262 if(Roo.isIE && !(Roo.isIE7 && Roo.isStrict) && this.getStyle('height') == 'auto'){
263 this._mask.setHeight( Roo.lib.Dom.getViewHeight());
266 //new Effect.Appear(this.overlay,
267 // { duration: this.overlayDuration, from: 0.0, to: this.overlayOpacity });
269 //this.imageArray = [];
272 // let's assume the constructor sorts out the list of images..
274 if ((imageLink.rel == 'lightbox')){
275 // if image is NOT part of a set, add single image to imageArray
276 this.imageArray.push([imageLink.href, imageLink.title]);
278 // if image is part of a set..
280 $$(imageLink.tagName + '[href][rel="' + imageLink.rel + '"]').
281 collect(function(anchor){ return [anchor.href, anchor.title]; }).
284 while (this.imageArray[imageNum][0] != imageLink.href) { imageNum++; }
287 var s = Roo.get(document).getScroll();
289 // calculate top and left offset for the lightbox
291 var lightboxTop = s.top + (Roo.lib.Dom.getViewHeight() / 10);
292 var lightboxLeft = s.left
293 this.lightbox.setStyle({
294 top: lightboxTop + 'px',
295 left: lightboxLeft + 'px' ,
296 zIndex : this._mask.getStyle('zIndex') * 1.1
298 this.lightbox.show();
302 this.changeImage(imageNum);
307 // Hide most elements and preload image in preparation for resizing image container.
309 changeImage: function(imageNum) {
311 this.activeImage = imageNum; // update global var
313 // hide elements during transition
315 this.loading.setStyle({
316 zIndex : this._mask.getStyle('zIndex') * 1.2
319 this.loadingLink.setX( (Roo.lib.Dom.getViewWidth() / 2) - 16);
320 //this.loadingLink.show();
321 // center the loading?
324 this.lightboxImage.hide();
326 this.hoverNav.hide();
327 this.prevLink.hide();
328 this.nextLink.hide();
329 // HACK: Opera9 does not currently support scriptaculous opacity and appear fx
330 this.imageDataContainer.setStyle({opacity: .0001});
331 this.numberDisplay.hide();
333 var imgPreloader = Roo.DomHelper.append(document.body, { tag: 'img' } , true);
334 // once image is preloaded, resize image container
337 imgPreloader.on('load', function() {
338 this.lightboxImage.src = this.imageArray[this.activeImage].dom.href;
339 this.resizeImageContainer(imgPreloader.getWidth(), imgPreloader.getHeight());
341 imgPreloader.src = this.imageArray[this.activeImage].dom.href;
345 // resizeImageContainer()
347 resizeImageContainer: function(imgWidth, imgHeight) {
349 // make sure we have some sensible sizes..
350 imgWidth = Math.max(50, imgWidth);
351 imgHeight = Math.max(50, imgHeight);
353 // get current width and height
354 var widthCurrent = this.outerImageContainer.getWidth();
355 var heightCurrent = this.outerImageContainer.getHeight();
357 //fixme need better calcs.
359 var ww = w.innerWidth || (w.document.documentElement.clientWidth || w.document.body.clientWidth);
360 var wh = w.innerHeight || (w.document.documentElement.clientHeight || w.document.body.clientHeight);
364 // get new width and height
365 var bs = this.borderSize * 2;
367 var widthNew = imgWidth + bs;
368 var heightNew = imgHeight + bs;
370 if (widthNew > ww || heightNew > wh) {
371 // bigger than window.
372 // scale here... - bit nasty..
373 var rescale = 1.1 * Math.max( widthNew / ww , heightNew / wh);
374 //console.log(rescale);
375 imgWidth = Math.floor(imgWidth / rescale);
376 imgHeight = Math.floor(imgHeight / rescale);
377 widthNew = imgWidth + bs;
378 heightNew = imgHeight + bs;
383 this.lightboxImage.set( { width : imgWidth, height : imgHeight });
386 // scalars based on change from old to new
387 var xScale = (widthNew / widthCurrent) * 100;
388 var yScale = (heightNew / heightCurrent) * 100;
390 // calculate size difference between new and old image, and resize if necessary
391 var wDiff = widthCurrent - widthNew;
392 var hDiff = heightCurrent - heightNew;
395 this.outerImageContainer.animate(
396 { width: {to: widthNew}, height: {to: heightNew} },
405 // if new and old image are same size and no scaling transition is necessary,
406 // do a quick pause to prevent image flicker.
408 if ((hDiff == 0) && (wDiff == 0)){
410 if (Roo.isIE) timeout = 250;
414 this.prevLink.setStyle({ height: imgHeight + 'px' });
415 this.nextLink.setStyle({ height: imgHeight + 'px' });
416 this.imageDataContainer.setStyle({ width: widthNew + 'px', width: heightNew + 'px', });
418 }).defer(timeout / 1000, this);
423 // Display image and begin preloading neighbors.
425 showImage: function(){
428 //this.loadingLink.hide();
430 this.lightboxImage.animate(
432 opacity : { from : 0.0 , to: 1.0 }
435 _this.updateDetails();
439 this.preloadNeighborImages();
444 // Display caption, image number, and bottom nav.
446 updateDetails: function() {
448 // if caption is not null
449 if (this.imageArray[this.activeImage].dom.title != ""){
450 this.caption.update(this.imageArray[this.activeImage].dom.title);
454 // if image is part of set display 'Image x of x'
455 if (this.imageArray.length > 1){
456 this.numberDisplay.update(
457 this.labelImage + ' ' + (this.activeImage + 1) + ' ' + this.labelOf + ' ' + this.imageArray.length)
458 this.numberDisplay.show();
461 this.imageDataContainer.animate(
463 //slide down ?: , from: 0.0, to: 1.0
464 opacity : { from : 0.0 , to: 1.0 }
468 // update overlay size and update nav
469 //var arrayPageSize = this.getPageSize();
470 //this.overlay.setStyle({ height: arrayPageSize[1] + 'px' });
479 // Display appropriate previous and next hover navigation.
481 updateNav: function() {
483 this.hoverNav.show();
485 // if not first image in set, display prev image button
486 if (this.activeImage > 0) this.prevLink.show();
488 // if not last image in set, display next image button
489 if (this.activeImage < (this.imageArray.length - 1)) this.nextLink.show();
491 this.enableKeyboardNav();
495 // enableKeyboardNav()
497 enableKeyboardNav: function() {
498 Roo.get(document.body).on('keydown', this.keyboardAction, this);
502 // disableKeyboardNav()
504 disableKeyboardNav: function() {
505 Roo.get(document.body).un('keydown', this.keyboardAction, this);
511 keyboardAction: function(event) {
512 var keycode = event.keyCode;
515 if (event.DOM_VK_ESCAPE) { // mozilla
516 escapeKey = event.DOM_VK_ESCAPE;
521 var key = String.fromCharCode(keycode).toLowerCase();
523 if (key.match(/x|o|c/) || (keycode == escapeKey)){ // close lightbox
525 } else if ((key == 'p') || (keycode == 37)){ // display previous image
526 if (this.activeImage != 0){
527 this.disableKeyboardNav();
528 this.changeImage(this.activeImage - 1);
530 } else if ((key == 'n') || (keycode == 39)){ // display next image
531 if (this.activeImage != (this.imageArray.length - 1)){
532 this.disableKeyboardNav();
533 this.changeImage(this.activeImage + 1);
539 // preloadNeighborImages()
540 // Preload previous and next images.
542 preloadNeighborImages: function(){
543 var preloadNextImage, preloadPrevImage;
544 if (this.imageArray.length > this.activeImage + 1){
545 preloadNextImage = Roo.DomHelper.append(document.body, { tag: 'img' } , true);
546 preloadNextImage.src = this.imageArray[this.activeImage + 1].dom.href;
548 if (this.activeImage > 0){
549 preloadPrevImage = Roo.DomHelper.append(document.body, { tag: 'img' } , true);
550 preloadPrevImage.src = this.imageArray[this.activeImage - 1].dom.href;
559 this.disableKeyboardNav();
560 this.lightbox.hide();
562 this._mask.setDisplayed(false);
563 // show all the objects that cause problems..
564 //$$('select', 'object', 'embed').each(function(node){ node.style.visibility = 'visible' });