/*
* Galleria v 1.2 prerelease 1.1 2010-11-14
* http://galleria.aino.se
*
* Copyright (c) 2010, Aino
* Licensed under the MIT license.
*/
(function($) {
// some references
var undef,
window = this,
doc = document,
$doc = $( doc );
// internal constants
var DEBUG = false,
NAV = navigator.userAgent.toLowerCase(),
HASH = window.location.hash.replace(/#\//, ''),
CLICK = function() {
// use this to make touch devices snappier
return Galleria.TOUCH ? 'touchstart' : 'click';
},
IE = (function() {
var v = 3,
div = doc.createElement( 'div' );
while (
div.innerHTML = '<!--[if gt IE '+(++v)+']><i></i><![endif]-->',
div.getElementsByTagName('i')[0]
);
return v > 4 ? v : undef;
}() ),
DOM = function() {
return {
html: doc.documentElement,
body: doc.body,
head: doc.getElementsByTagName('head')[0],
title: doc.title
};
},
// the internal timeouts object
// provides helper methods for controlling timeouts
_timeouts = {
trunk: {},
add: function( id, fn, delay, loop ) {
loop = loop || false;
this.clear( id );
if ( loop ) {
var old = fn;
fn = function() {
old();
_timeouts.add( id, fn, delay );
};
}
this.trunk[ id ] = window.setTimeout( fn, delay );
},
clear: function( id ) {
var del = function( i ) {
window.clearTimeout( this.trunk[ i ] );
delete this.trunk[ i ];
};
if ( !!id && id in this.trunk ) {
del.call( _timeouts, id );
} else if ( typeof id == 'undefined' ) {
for ( var i in this.trunk ) {
del.call( _timeouts, i );
}
}
}
},
// the internal gallery holder
_galleries = [],
// the transitions holder
_transitions = {
fade: function(params, complete) {
$(params.next).css('opacity', 0).show().animate({
opacity: 1
}, params.speed, complete);
if (params.prev) {
$(params.prev).css('opacity', 1).show().animate({
opacity: 0
}, params.speed);
}
},
flash: function(params, complete) {
$(params.next).css('opacity', 0);
if (params.prev) {
$(params.prev).animate({
opacity: 0
}, (params.speed / 2), function() {
$(params.next).animate({
opacity: 1
}, params.speed, complete);
});
} else {
$(params.next).animate({
opacity: 1
}, params.speed, complete);
}
},
pulse: function(params, complete) {
if (params.prev) {
$(params.prev).hide();
}
$(params.next).css('opacity', 0).animate({
opacity:1
}, params.speed, complete);
},
slide: function(params, complete) {
var image = $(params.next).parent(),
images = this.$('images'), // ??
width = this._stageWidth,
easing = this.getOptions( 'easing' );
image.css({
left: width * ( params.rewind ? -1 : 1 )
});
images.animate({
left: width * ( params.rewind ? 1 : -1 )
}, {
duration: params.speed,
queue: false,
easing: easing,
complete: function() {
images.css('left', 0);
image.css('left', 0);
complete();
}
});
},
fadeslide: function(params, complete) {
var x = 0,
easing = this.getOptions('easing'),
distance = this.getStageWidth();
if (params.prev) {
x = Utils.parseValue( $(params.prev).css('left') );
$(params.prev).css({
opacity: 1,
left: x
}).animate({
opacity: 0,
left: x + ( distance * ( params.rewind ? 1 : -1 ) )
},{
duration: params.speed,
queue: false,
easing: easing
});
}
x = Utils.parseValue( $(params.next).css('left') );
$(params.next).css({
left: x + ( distance * ( params.rewind ? -1 : 1 ) ),
opacity: 0
}).animate({
opacity: 1,
left: x
}, {
duration: params.speed,
complete: complete,
queue: false,
easing: easing
});
}
},
// the Utils singleton
Utils = (function() {
return {
array : function( obj ) {
return Array.prototype.slice.call(obj);
},
create : function( className, nodeName ) {
nodeName = nodeName || 'div';
var elem = doc.createElement( nodeName );
elem.className = className;
return elem;
},
forceStyles : function( elem, styles ) {
elem = $(elem);
if ( elem.attr( 'style' ) ) {
elem.data( 'styles', elem.attr( 'style' ) ).removeAttr( 'style' );
}
elem.css( styles );
},
revertStyles : function() {
$.each( Utils.array( arguments ), function( i, elem ) {
elem = $( elem ).removeAttr( 'style' );
if ( elem.data( 'styles' ) ) {
elem.attr( 'style', elem.data('styles') ).data( 'styles', null );
}
});
},
moveOut : function( elem ) {
Utils.forceStyles( elem, {
position: 'absolute',
left: -10000
});
},
moveIn : function() {
Utils.revertStyles.apply( Utils, Utils.array( arguments ) );
},
hide : function( elem, speed, callback ) {
elem = $(elem);
// save the value if not exist
if (! elem.data('opacity') ) {
elem.data('opacity', elem.css('opacity') );
}
// always hide
var style = { opacity: 0 };
if (speed) {
elem.stop().animate( style, speed, callback );
} else {
elem.css( style );
};
},
show : function( elem, speed, callback ) {
elem = $(elem);
// bring back saved opacity
var saved = parseFloat( elem.data('opacity') ) || 1,
style = { opacity: saved };
// reset save if opacity == 1
if (saved == 1) {
elem.data('opacity', null);
}
// animate or toggle
if (speed) {
elem.stop().animate( style, speed, callback );
} else {
elem.css( style );
};
},
addTimer : function() {
_timeouts.add.apply( _timeouts, Utils.array( arguments ) );
return this;
},
clearTimer : function() {
_timeouts.clear.apply( _timeouts, Utils.array( arguments ) );
return this;
},
wait : function(options) {
options = $.extend({
until : function() { return false; },
success : function() {},
error : function() { Galleria.raise('Could not complete wait function.'); },
timeout: 3000
}, options);
var start = Utils.timestamp(),
elapsed,
now;
window.setTimeout(function() {
now = Utils.timestamp();
elapsed = now - start;
if ( options.until( elapsed ) ) {
options.success();
return false;
}
if (now >= start + options.timeout) {
options.error();
return false;
}
window.setTimeout(arguments.callee, 2);
}, 2);
},
toggleQuality : function( img, force ) {
if ( !( IE == 7 || IE == 8 ) || !!img === false ) {
return;
}
if ( typeof force === 'undefined' ) {
force = img.style.msInterpolationMode == 'nearest-neighbor';
}
img.style.msInterpolationMode = force ? 'bicubic' : 'nearest-neighbor';
},
insertStyleTag : function( styles ) {
var style = doc.createElement( 'style' );
DOM().head.appendChild( style );
if ( style.styleSheet ) { // IE
style.styleSheet.cssText = styles;
} else {
var cssText = doc.createTextNode( styles );
style.appendChild( cssText );
}
},
// a loadscript method that works for local scripts
loadScript: function( url, callback ) {
var done = false,
script = $('<scr'+'ipt>').attr({
src: url,
async: true
}).get(0);
// Attach handlers for all browsers
script.onload = script.onreadystatechange = function() {
if ( !done && (!this.readyState ||
this.readyState == 'loaded' || this.readyState == 'complete') ) {
done = true;
if (typeof callback == 'function') {
callback.call( this, this );
}
// Handle memory leak in IE
script.onload = script.onreadystatechange = null;
}
};
var s = doc.getElementsByTagName( 'script' )[0];
s.parentNode.insertBefore( script, s );
},
// parse anything into a number
parseValue: function( val ) {
if (typeof val == 'number') {
return val;
} else if (typeof val == 'string') {
var arr = val.match(/\-?\d/g);
return arr && arr.constructor == Array ? arr.join('') * 1 : 0;
} else {
return 0;
}
},
// timestamp abstraction
timestamp: function() {
return new Date().getTime();
},
// this is pretty crap, but works for now
// it will add a callback, but it can't guarantee that the styles can be fetched
// using getComputedStyle further checking needed, possibly a dummy element
loadCSS : function( href, id, callback ) {
var link,
ready = false,
length;
// look for manual css
$('link[rel=stylesheet]').each(function() {
if ( new RegExp( href ).test( this.href ) ) {
link = this;
return false;
}
});
if ( typeof id == 'function' ) {
callback = id;
id = undef;
}
callback = callback || function() {}; // dirty
// if already present, return
if ( link ) {
callback.call( link, link );
return link;
}
// save the length of stylesheets to check against
length = doc.styleSheets.length;
// add timestamp if DEBUG is true
if ( DEBUG ) {
href += '?' + Utils.timestamp();
}
// check for existing id
if( $('#'+id).length ) {
$('#'+id).attr('href', href);
length--;
ready = true;
} else {
link = $( '<link>' ).attr({
rel: 'stylesheet',
href: href,
id: id
}).get(0);
window.setTimeout(function() {
var styles = $('link[rel="stylesheet"], style');
if ( styles.length ) {
styles.get(0).parentNode.insertBefore( link, styles[0] );
} else {
DOM().head.appendChild( link );
}
if ( IE ) {
link.attachEvent( 'onreadystatechange', function(e) {
if( link.readyState == 'complete' ) {
ready = true;
}
});
} else {
// what to do here? returning for now.
ready = true;
}
}, 10);
}
if (typeof callback == 'function') {
Utils.wait({
until: function() {
return ready && doc.styleSheets.length > length;
},
success: function() {
Utils.addTimer( 'css', function() {
callback.call( link, link );
}, 100);
},
error: function() {
Galleria.raise( 'Theme CSS could not load' );
},
timeout: 1000
});
}
return link;
}
};
})();
/**
The main Galleria class
@class
@example var gallery = new Galleria();
@author http://aino.se
@requires jQuery
@returns {Galleria}
*/
Galleria = function() {
var self = this;
// the theme used
this._theme = undef;
// internal options
this._options = {};
// flag for controlling play/pause
this._playing = false;
// internal interval for slideshow
this._playtime = 5000;
// internal variable for the currently active image
this._active = null;
// the internal queue, arrayified
this._queue = { length: 0 };
// the internal data array
this._data = [];
// the internal dom collection
this._dom = {};
// the internal thumbnails array
this._thumbnails = [];
// internal init flag
this._initialized = false;
// global stagewidth/height
this._stageWidth = 0;
this._stageHeight = 0;
// target holder
this._target = undef;
// instance id
this._id = Utils.timestamp();
// add some elements
var divs = 'container stage images image-nav image-nav-left image-nav-right ' +
'info info-text info-title info-description info-author ' +
'thumbnails thumbnails-list thumbnails-container thumb-nav-left thumb-nav-right ' +
'loader counter tooltip',
spans = 'current total';
$.each( divs.split(' '), function( i, elemId ) {
self._dom[ elemId ] = Utils.create( 'galleria-' + elemId );
});
$.each( spans.split(' '), function( i, elemId ) {
self._dom[ elemId ] = Utils.create( 'galleria-' + elemId, 'span' );
});
// the internal keyboard object
// keeps reference of the keybinds and provides helper methods for binding keys
var keyboard = this._keyboard = {
keys : {
'UP': 38,
'DOWN': 40,
'LEFT': 37,
'RIGHT': 39,
'RETURN': 13,
'ESCAPE': 27,
'BACKSPACE': 8,
'SPACE': 32
},
map : {},
bound: false,
press: function(e) {
var key = e.keyCode || e.which;
if ( key in keyboard.map && typeof keyboard.map[key] == 'function' ) {
keyboard.map[key].call(self, e);
}
},
attach: function(map) {
for( var key in map ) {
var up = key.toUpperCase();
if ( up in keyboard.keys ) {
keyboard.map[ keyboard.keys[up] ] = map[key];
}
}
if ( !keyboard.bound ) {
keyboard.bound = true;
$doc.bind('keydown', keyboard.press);
}
},
detach: function() {
keyboard.bound = false;
$doc.unbind('keydown', keyboard.press);
}
};
// internal controls for keeping track of active / inactive images
var controls = this._controls = {
0: undef,
1: undef,
active : 0,
swap : function() {
controls.active = controls.active ? 0 : 1;
},
getActive : function() {
return controls[ controls.active ];
},
getNext : function() {
return controls[ 1 - controls.active ];
}
};
// internal carousel object
var carousel = this._carousel = {
// shortcuts
next: self.$('thumb-nav-right'),
prev: self.$('thumb-nav-left'),
// cache the width
width: 0,
// track the current position
current: 0,
// cache max value
max: 0,
// save all hooks for each width in an array
hooks: [],
// update the carousel
// you can run this method anytime, f.ex on window.resize
update: function() {
var w = 0,
h = 0,
hooks = [0];
$.each( self._thumbnails, function( i, thumb ) {
if ( thumb.ready ) {
w += thumb.outerWidth || $( thumb.container ).outerWidth( true );
hooks[ i+1 ] = w;
h = Math.max( h, thumb.outerHeight || $( thumb.container).outerHeight() );
}
});
self.$( 'thumbnails-container' ).toggleClass( 'galleria-carousel', w > self._stageWidth );
self.$( 'thumbnails' ).css({
width: w,
height: h
});
carousel.max = w;
carousel.hooks = hooks;
carousel.width = self.$( 'thumbnails-list' ).width();
carousel.setClasses();
// todo: fix so the carousel moves to the left
},
bindControls: function() {
carousel.next.bind( CLICK(), function(e) {
e.preventDefault();
if ( self._options.carousel_steps == 'auto' ) {
for ( var i = carousel.current; i < carousel.hooks.length; i++ ) {
if ( carousel.hooks[i] - carousel.hooks[ carousel.current ] > carousel.width ) {
carousel.set(i - 2);
break;
}
}
} else {
carousel.set( carousel.current + self._options.carousel_steps);
}
});
carousel.prev.bind( CLICK(), function(e) {
e.preventDefault();
if ( self._options.carousel_steps == 'auto' ) {
for ( var i = carousel.current; i >= 0; i-- ) {
if ( carousel.hooks[ carousel.current ] - carousel.hooks[i] > carousel.width ) {
carousel.set( i + 2 );
break;
} else if ( i == 0 ) {
carousel.set( 0 );
break;
}
}
} else {
carousel.set( carousel.current - self._options.carousel_steps );
}
});
},
// calculate and set positions
set: function( i ) {
i = Math.max( i, 0 );
while ( carousel.hooks[i - 1] + carousel.width > carousel.max && i >= 0 ) {
i--;
}
carousel.current = i;
carousel.animate();
},
// get the last position
getLast: function(i) {
return ( i || carousel.current ) - 1;
},
// follow the active image
follow: function(i) {
//don't follow if position fits
if ( i == 0 || i == carousel.hooks.length - 2 ) {
carousel.set( i );
return;
}
// calculate last position
var last = carousel.current;
while( carousel.hooks[last] - carousel.hooks[ carousel.current ] <
carousel.width && last <= carousel.hooks.length ) {
last ++;
}
// set position
if ( i - 1 < carousel.current ) {
carousel.set( i - 1 );
} else if ( i + 2 > last) {
carousel.set( i - last + carousel.current + 2 );
}
},
// helper for setting disabled classes
setClasses: function() {
carousel.prev.toggleClass( 'disabled', !carousel.current );
carousel.next.toggleClass( 'disabled', carousel.hooks[ carousel.current ] + carousel.width > carousel.max );
},
// the animation method
animate: function(to) {
carousel.setClasses();
var num = carousel.hooks[ carousel.current ] * -1;
if ( isNaN( num ) ) {
return;
}
self.$( 'thumbnails' ).animate({
left: num
},{
duration: self._options.carousel_speed,
easing: self._options.easing,
queue: false
});
}
};
// tooltip control
// added in 1.2
var tooltip = this._tooltip = {
initialized : false,
active: null,
open: false,
init: function() {
tooltip.initialized = true;
var css = '.galleria-tooltip{padding:3px 8px;max-width:50%;background:#ffe;color:#000;z-index:3;position:absolute;font-size:11px;line-height:1.3' +
'opacity:0;box-shadow:0 0 2px rgba(0,0,0,.4);-moz-box-shadow:0 0 2px rgba(0,0,0,.4);-webkit-box-shadow:0 0 2px rgba(0,0,0,.4);}';
Utils.insertStyleTag(css);
self.$( 'tooltip' ).css('opacity', .8);
Utils.hide( self.get('tooltip') );
},
// move handler
move: function( e ) {
var mouseX = self.getMousePosition(e).x,
mouseY = self.getMousePosition(e).y,
$elem = self.$( 'tooltip' ),
x = mouseX,
y = mouseY,
height = $elem.outerHeight( true ) + 1,
width = $elem.outerWidth( true ),
limitY = height + 15;
var maxX = self._stageWidth - width,
maxY = self._stageHeight - height;
if ( !isNaN(x) && !isNaN(y) ) {
x += 15;
y -= 35;
x = Math.max( 0, Math.min( maxX, x ) );
y = Math.max( 0, Math.min( maxY, y ) );
if( mouseY < limitY ) {
y = limitY;
}
$elem.css({ left: x, top: y });
}
},
// bind elements to the tooltip
// you can bind multiple elementIDs using { elemID : function } or { elemID : string }
// you can also bind single DOM elements using bind(elem, string)
bind: function( elem, value ) {
if (! tooltip.initialized ) {
tooltip.init();
}
var hover = function( elem, value) {
tooltip.define( elem, value );
$( elem ).hover(function() {
tooltip.active = elem;
Utils.clearTimer('switch_tooltip');
self.$('container').unbind( 'mousemove', tooltip.move ).bind( 'mousemove', tooltip.move ).trigger( 'mousemove' );
tooltip.show( elem );
Galleria.utils.addTimer( 'tooltip', function() {
self.$( 'tooltip' ).stop();
Utils.show( self.get( 'tooltip' ), 400 );
tooltip.open = true;
}, tooltip.open ? 0 : 1000);
}, function() {
tooltip.active = null;
self.$( 'container' ).unbind( 'mousemove', tooltip.move );
Utils.clearTimer( 'tooltip' );
Utils.hide( self.get( 'tooltip' ), 200, function() {
Utils.addTimer('switch_tooltip', function() {
tooltip.open = false;
}, 1000);
});
});
};
if (typeof value == 'string') {
hover( ( elem in self._dom ? self.get(elem) : elem ), value );
} else {
// asume elemID here
$.each( elem, function( elemID, val ) {
hover( self.get(elemID), val );
});
}
},
show: function( elem ) {
var text = $(elem).data('tt');
if ( ! text ) {
return;
}
text = typeof text == 'function' ? text() : text;
self.$( 'tooltip' ).html( text.replace(/\s/, ' ') );
},
// redefine the tooltip here
define: function( elem, value ) {
// we store functions, not strings
if (typeof value !== 'function') {
var s = value;
value = function() {
return s;
};
}
if ( elem in self._dom ) {
elem = self.get( elem );
}
$(elem).data('tt', value);
tooltip.show( elem );
},
refresh: function() {
$.each( arguments, function(i, elem) {
if ( tooltip.active == elem ) {
tooltip.show( elem );
}
});
}
};
// internal fullscreen control
// added in 1.195
// still kind of experimental
var fullscreen = this._fullscreen = {
scrolled: 0,
enter: function(callback) {
// hide the image until rescale is complete
Utils.hide( self.getActiveImage() );
self.$( 'container' ).addClass( 'fullscreen' );
fullscreen.scrolled = $(window).scrollTop();
// begin styleforce
Utils.forceStyles(self.get('container'), {
position: 'fixed',
top: 0,
left: 0,
width: '100%',
height: '100%',
zIndex: 10000
});
var htmlbody = {
height: '100%',
overflow: 'hidden',
margin:0,
padding:0
};
Utils.forceStyles( DOM().html, htmlbody );
Utils.forceStyles( DOM().body, htmlbody );
// attach some keys
self.attachKeyboard({
escape: self.exitFullscreen,
right: self.next,
left: self.prev
});
// init the first rescale and attach callbacks
self.rescale(function() {
Utils.addTimer('fullscreen_enter', function() {
// show the image after 50 ms
Utils.show( self.getActiveImage() );
if (typeof callback == 'function') {
callback.call( self );
}
}, 100);
self.trigger( Galleria.FULLSCREEN_ENTER );
});
// bind the scaling to the resize event
$(window).resize( function() {
fullscreen.scale();
} );
},
scale : function() {
self.rescale();
},
exit: function(callback) {
Utils.hide( self.getActiveImage() );
self.$('container').removeClass( 'fullscreen' );
// revert all styles
Utils.revertStyles( self.get('container'), DOM().html, DOM().body );
// scroll back
window.scrollTo(0, fullscreen.scrolled);
// detach all keyboard events (is this good?)
self.detachKeyboard();
self.rescale(function() {
Utils.addTimer('fullscreen_exit', function() {
// show the image after 50 ms
Utils.show( self.getActiveImage() );
if ( typeof callback == 'function' ) {
callback.call( self );
}
}, 50);
self.trigger( Galleria.FULLSCREEN_EXIT );
});
$(window).unbind('resize', fullscreen.scale);
}
};
// the internal idle object for controlling idle states
// TODO occational event conflicts
var idle = this._idle = {
trunk: [],
bound: false,
add: function(elem, to) {
if (!elem) {
return;
}
if (!idle.bound) {
idle.addEvent();
}
elem = $(elem);
var from = {};
for (var style in to) {
from[style] = elem.css(style);
}
elem.data('idle', {
from: from,
to: to,
complete: true,
busy: false
});
idle.addTimer();
idle.trunk.push(elem);
},
remove: function(elem) {
elem = jQuery(elem);
$.each(idle.trunk, function(i, el) {
if ( el.length && !el.not(elem).length ) {
self._idle.show(elem);
self._idle.trunk.splice(i, 1);
}
});
if (!idle.trunk.length) {
idle.removeEvent();
Utils.clearTimer('idle');
}
},
addEvent : function() {
idle.bound = true;
self.$('container').bind('mousemove click', idle.showAll );
},
removeEvent : function() {
idle.bound = false;
self.$('container').unbind('mousemove click', idle.showAll );
},
addTimer : function() {
Utils.addTimer('idle', function() {
self._idle.hide();
}, self._options.idle_time );
},
hide : function() {
self.trigger( Galleria.IDLE_ENTER );
$.each( idle.trunk, function(i, elem) {
var data = elem.data('idle');
if (! data) {
return;
}
data.complete = false;
elem.stop().animate(data.to, {
duration: 600,
queue: false,
easing: 'swing'
});
});
},
showAll : function() {
Utils.clearTimer('idle');
$.each(self._idle.trunk, function( i, elem ) {
self._idle.show( elem );
});
},
show: function(elem) {
var data = elem.data('idle');
if (!data.busy && !data.complete) {
data.busy = true;
self.trigger( Galleria.IDLE_EXIT );
elem.animate(data.from, {
duration: 300,
queue: false,
easing: 'swing',
complete: function() {
$(this).data('idle').busy = false;
$(this).data('idle').complete = true;
}
});
}
idle.addTimer();
}
};
// internal lightbox object
// creates a predesigned lightbox for simple popups of images in galleria
var lightbox = this._lightbox = {
width : 0,
height : 0,
initialized : false,
active : null,
image : null,
elems : {},
init : function() {
// trigger the event
self.trigger( Galleria.LIGHTBOX_OPEN );
if ( lightbox.initialized ) {
return;
}
lightbox.initialized = true;
// create some elements to work with
var elems = 'overlay box content shadow title info close prevholder prev nextholder next counter image',
el = {},
op = self._options,
css = '',
cssMap = {
overlay: 'position:fixed;display:none;opacity:'+op.overlay_opacity+';top:0;left:0;width:100%;height:100%;background:'+op.overlay_background+';z-index:99990',
box: 'position:fixed;display:none;width:400px;height:400px;top:50%;left:50%;margin-top:-200px;margin-left:-200px;z-index:99991',
shadow: 'position:absolute;background:#000;width:100%;height:100%;',
content: 'position:absolute;background-color:#fff;top:10px;left:10px;right:10px;bottom:10px;overflow:hidden',
info: 'position:absolute;bottom:10px;left:10px;right:10px;color:#444;font:11px/13px arial,sans-serif;height:13px',
close: 'position:absolute;top:10px;right:10px;height:20px;width:20px;background:#fff;text-align:center;cursor:pointer;color:#444;font:16px/22px arial,sans-serif;z-index:99999',
image: 'position:absolute;top:10px;left:10px;right:10px;bottom:30px;overflow:hidden',
prevholder: 'position:absolute;width:50%;height:100%;cursor:pointer',
nextholder: 'position:absolute;width:50%;height:100%;right:0;cursor:pointer',
prev: 'position:absolute;top:50%;margin-top:-20px;height:40px;width:30px;background:#fff;left:20px;display:none;line-height:40px;text-align:center;color:#000',
next: 'position:absolute;top:50%;margin-top:-20px;height:40px;width:30px;background:#fff;right:20px;left:auto;display:none;line-height:40px;text-align:center;color:#000',
title: 'float:left',
counter: 'float:right;margin-left:8px'
},
hover = function(elem) {
return elem.hover(
function() { $(this).css( 'color', '#bbb' ); },
function() { $(this).css( 'color', '#444' ); }
);
};
// create and insert CSS
$.each(cssMap, function( key, value ) {
css += '.galleria-lightbox-'+key+'{'+value+'}';
});
Utils.insertStyleTag( css );
// create the elements
$.each(elems.split(' '), function( i, elemId ) {
self.addElement( 'lightbox-' + elemId );
el[ elemId ] = lightbox.elems[ elemId ] = self.get( 'lightbox-' + elemId );
});
// initiate the image
lightbox.image = new Galleria.Picture();
// append the elements
self.append({
'lightbox-box': ['lightbox-shadow','lightbox-content', 'lightbox-close','lightbox-prevholder','lightbox-nextholder'],
'lightbox-info': ['lightbox-title','lightbox-counter'],
'lightbox-content': ['lightbox-info', 'lightbox-image'],
'lightbox-prevholder': 'lightbox-prev',
'lightbox-nextholder': 'lightbox-next'
});
$( el.image ).append( lightbox.image.container );
$( DOM().body ).append( el.overlay, el.box );
// add the prev/next nav and bind some controls
hover( $( el.close ).bind( CLICK(), lightbox.hide ).html('×') );
$.each( ['Prev','Next'], function(i, dir) {
var $d = $( el[ dir.toLowerCase() ] ).html( /v/.test( dir ) ? '‹ ' : ' ›' );
$( el[ dir.toLowerCase()+'holder'] ).hover(function() {
$d.show();
}, function() {
$d.fadeOut( 200 );
}).bind( CLICK(), function() {
lightbox[ 'show' + dir ]();
});
});
$( el.overlay ).bind( CLICK(), lightbox.hide );
},
rescale: function(event) {
// calculate
var width = Math.min( $(window).width()-40, lightbox.width ),
height = Math.min( $(window).height()-60, lightbox.height ),
ratio = Math.min( width / lightbox.width, height / lightbox.height ),
destWidth = ( lightbox.width * ratio ) + 40,
destHeight = ( lightbox.height * ratio ) + 60,
to = {
width: destWidth,
height: destHeight,
marginTop: Math.ceil( destHeight / 2 ) *- 1,
marginLeft: Math.ceil( destWidth / 2 ) *- 1
};
// if rescale event, don't animate
if ( event ) {
$( lightbox.elems.box ).css( to );
} else {
$( lightbox.elems.box ).animate(
to,
self._options.lightbox_transition_speed,
self._options.easing,
function() {
var image = lightbox.image,
speed = self._options.lightbox_fade_speed;
self.trigger({
type: Galleria.LIGHTBOX_IMAGE,
imageTarget: image.image
});
image.show();
Utils.show( image.image, speed );
Utils.show( lightbox.elems.info, speed );
}
);
}
},
hide: function() {
// remove the image
lightbox.image.image = null;
$(window).unbind('resize', lightbox.rescale);
$( lightbox.elems.box ).hide();
Utils.hide( lightbox.elems.info );
Utils.hide( lightbox.elems.overlay, 200, function() {
$( this ).hide().css( 'opacity', self._options.overlay_opacity );
self.trigger( Galleria.LIGHTBOX_CLOSE );
});
},
showNext: function() {
lightbox.show( self.getNext( lightbox.active ) );
},
showPrev: function() {
lightbox.show( self.getPrev( lightbox.active ) );
},
show: function(index) {
lightbox.active = index = typeof index == 'number' ? index : self.getIndex();
if ( !lightbox.initialized ) {
lightbox.init();
}
$(window).unbind('resize', lightbox.rescale );
var data = self.getData(index),
total = self.getDataLength();
Utils.hide( lightbox.elems.info );
lightbox.image.load( data.image, function( image ) {
lightbox.width = image.original.width;
lightbox.height = image.original.height;
$( image.image ).css({
width: '100.5%',
height: '100.5%',
top: 0,
zIndex: 99998,
opacity: 0
});
lightbox.elems.title.innerHTML = data.title;
lightbox.elems.counter.innerHTML = (index + 1) + ' / ' + total;
$(window).resize( lightbox.rescale );
lightbox.rescale();
});
$( lightbox.elems.overlay ).show();
$( lightbox.elems.box ).show();
}
};
return this;
};
// end Galleria constructor
Galleria.prototype = {
/**
Use this function to initialize the gallery and start loading.
Should only be called once per instance.
@param {HTML Element} target The target element
@param {Object} options The gallery options
@returns {Galleria}
*/
init: function( target, options ) {
var self = this;
// save the instance
_galleries.push( this );
// save the original ingredients
this._original = {
target: target,
options: options,
data: null
};
// save the target here
this._target = this._dom.target = target.nodeName ? target : $( target ).get(0);
// raise error if no target is detected
if ( !this._target ) {
Galleria.raise('Target not found.');
return;
}
// apply options
this._options = {
autoplay: false,
carousel: true,
carousel_follow: true,
carousel_speed: 400,
carousel_steps: 'auto',
clicknext: false,
data_config : function( elem ) { return {}; },
data_selector: 'img',
data_source: this._target,
debug: undef,
easing: 'galleria',
extend: function(options) {},
height: 'auto',
idle_time: 3000,
image_crop: false,
image_margin: 0,
image_pan: false,
image_pan_smoothness: 12,
image_position: '50%',
keep_source: false,
lightbox_fade_speed: 200,
lightbox_transition_speed: 500,
link_source_images: true,
max_scale_ratio: undef,
min_scale_ratio: undef,
on_image: function(img,thumb) {},
overlay_opacity: .85,
overlay_background: '#0b0b0b',
pause_on_interaction: true, // 1.9.96
popup_links: false,
preload: 2,
queue: true,
show: 0,
show_info: true,
show_counter: true,
show_imagenav: true,
thumb_crop: true,
thumb_event_type: CLICK(),
thumb_fit: true,
thumb_margin: 0,
thumb_quality: 'auto',
thumbnails: true,
transition: 'fade',
transition_initial: undef,
transition_speed: 400,
width: 'auto'
};
// apply debug
if ( options && options.debug === true ) {
DEBUG = true;
}
// hide all content
$( this._target ).children().hide();
// now we just have to wait for the theme...
if ( Galleria.theme ) {
this._init();
} else {
Utils.addTimer('themeload', function() {
Galleria.raise( 'No theme found.', true);
}, 2000);
$doc.one( Galleria.THEMELOAD, function() {
Utils.clearTimer( 'themeload' );
self._init.call( self );
});
}
},
// the internal _init is called when the THEMELOAD event is triggered
// this method should only be called once per instance
// for manipulation of data, use the .load method
_init: function() {
var self = this;
if ( this._initialized ) {
Galleria.raise( 'Init failed: Gallery instance already initialized.' );
return this;
}
this._initialized = true;
if ( !Galleria.theme ) {
Galleria.raise( 'Init failed: No theme found.' );
return this;
}
// merge the theme & caller options
$.extend( true, this._options, Galleria.theme.defaults, this._original.options );
// bind the gallery to run when data is ready
this.bind( Galleria.DATA, function() {
// save the new data
this._original.data = this._data;
// lets show the counter here
this.get('total').innerHTML = this.getDataLength();
// cache the container
var $container = this.$( 'container' );
// the gallery is ready, let's just wait for the css
var num = { width: 0, height: 0 };
var testElem = Utils.create('galleria-image');
// check container and thumbnail height
Utils.wait({
until: function() {
// keep trying to get the value
$.each(['width', 'height'], function( i, m ) {
if (self._options[ m ] && typeof self._options[ m ] == 'number') {
num[ m ] = self._options[ m ];
} else {
num[m] = Utils.parseValue( self.$( 'target' ).css( m ) ) ||
Utils.parseValue( $container.css( m ) ) ||
self.$( 'target' )[ m ]() ||
$container[ m ]()
}
});
var thumbHeight = function() {
return true;
};
// make sure thumbnails have a height as well
if ( self._options.thumbnails ) {
self.$('thumbnails').append( testElem );
thumbHeight = function() {
return !!$( testElem ).height();
};
}
return thumbHeight() && num.width && num.height > 50;
},
success: function() {
// remove the testElem
$( testElem ).remove();
// apply the new meassures
$container.width( num.width );
$container.height( num.height );
// for some strange reason, webkit needs a single setTimeout to play ball
if ( Galleria.WEBKIT ) {
window.setTimeout( function() {
self._run();
}, 1);
} else {
self._run();
}
},
error: function() {
// Height was probably not set, raise a hard error
Galleria.raise('Width & Height not found.', true);
},
timeout: 2000
});
});
// postrun some stuff after the gallery is ready
// make sure it only runs once
var one = false;
this.bind( Galleria.READY, function() {
// show counter
Utils.show( this.get('counter') );
// bind clicknext
if ( this._options.clicknext ) {
$.each( this._data, function( i, data ) {
delete data.link;
});
this.$( 'stage' ).css({ cursor : 'pointer' }).bind( CLICK(), function(e) {
self.next();
});
}
// bind carousel nav
if ( this._options.carousel ) {
this._carousel.bindControls();
}
// start autoplay
if ( this._options.autoplay ) {
this.pause();
if ( typeof this._options.autoplay == 'number' ) {
this._playtime = this._options.autoplay;
}
this.trigger( Galleria.PLAY );
this._playing = true;
}
// if second load, just do the show and return
if ( one ) {
if ( typeof this._options.show == 'number' ) {
this.show( this._options.show );
}
return;
}
one = true;
// initialize the History plugin
if ( Galleria.History ) {
// bind the show method
Galleria.History.change(function(e) {
// grab history ID
var val = parseInt( e.value.replace( /\//, '' ) );
// if ID is NaN, the user pressed back from the first image
// return to previous address
if (isNaN(val)) {
window.history.go(-1);
// else show the image
} else {
self.show( val, undef, true );
}
});
}
// call the theme init method
Galleria.theme.init.call( this, this._options );
// call the extend option
this._options.extend.call( this, this._options );
// show the initial image
// first test for permalinks in history
if ( /^[0-9]{1,4}$/.test( HASH ) && Galleria.History ) {
this.show( HASH, undef, true );
} else {
this.show( this._options.show );
}
});
// build the gallery frame
this.append({
'info-text' :
['info-title', 'info-description', 'info-author'],
'info' :
['info-text'],
'image-nav' :
['image-nav-right', 'image-nav-left'],
'stage' :
['images', 'loader', 'counter', 'image-nav'],
'thumbnails-list' :
['thumbnails'],
'thumbnails-container' :
['thumb-nav-left', 'thumbnails-list', 'thumb-nav-right'],
'container' :
['stage', 'thumbnails-container', 'info', 'tooltip']
});
Utils.hide( this.$( 'counter' ).append(
this.get( 'current' ),
' / ',
this.get( 'total' )
) );
this.setCounter('–');
// add images to the controls
$.each( new Array(2), function(i) {
// create a new Picture instance
var image = new Galleria.Picture();
// apply some styles
$( image.container ).css({
position: 'absolute',
top: 0,
left: 0
});
// append the image
self.$( 'images' ).append( image.container );
// reload the controls
self._controls[i] = image;
});
// some forced generic styling
this.$( 'images' ).css({
position: 'relative',
top: 0,
left: 0,
width: '100%',
height: '100%'
});
this.$( 'thumbnails, thumbnails-list' ).css({
overflow: 'hidden',
position: 'relative'
});
// bind image navigation arrows
this.$( 'image-nav-right, image-nav-left' ).bind( CLICK(), function(e) {
// tune the clicknext option
if ( self._options.clicknext ) {
e.stopPropagation();
}
// pause if options is set
if ( self._options.pause_on_interaction ) {
self.pause();
}
// navigate
var fn = /right/.test( this.className ) ? 'next' : 'prev';
self[ fn ]();
});
// hide controls if chosen to
$.each( ['info','counter','image-nav'], function( i, el ) {
if ( self._options[ 'show_' + el.replace(/-/, '') ] === false ) {
Utils.moveOut( self.get( el ) );
}
});
// load up target content
this.load();
// now it's usually safe to remove the content
// IE will never stop loading if we remove it, so let's keep it hidden for IE (it's usually fast enough anyway)
if ( !this._options.keep_source && !IE ) {
this._target.innerHTML = '';
}
// append the gallery frame
this.$( 'target' ).append( this.get( 'container' ) );
// parse the carousel on each thumb load
if ( this._options.carousel ) {
this.bind( Galleria.THUMBNAIL, function() {
this.updateCarousel();
});
}
// bind on_image helper
this.bind( Galleria.IMAGE, function( e ) {
this._options.on_image.call( this, e.imageTarget, e.thumbTarget );
});
return this;
},
// the internal _run method should be called after loading data into galleria
// creates thumbnails and makes sure the gallery has proper meassurements
_run : function() {
// shortcuts
var self = this,
o = this._options,
// width/height for calculations
width = 0,
height = 0,
// cache the thumbnail option
optval = typeof o.thumbnails == 'string' ? o.thumbnails.toLowerCase() : null;
// loop through data and create thumbnails
for( var i = 0; this._data[i]; i++ ) {
var thumb,
data = this._data[i],
$container;
if ( o.thumbnails === true ) {
// add a new Picture instance
thumb = new Galleria.Picture(i);
// get source from thumb or image
var src = data.thumb || data.image;
// append the thumbnail
this.$( 'thumbnails' ).append( thumb.container );
// cache the container
$container = $( thumb.container );
// move some data into the instance
// for some reason, jQuery cant handle css(property) when zooming in FF, breaking the gallery
// so we resort to getComputedStyle for browsers who support it
var getStyle = function( prop ) {
return doc.defaultView && doc.defaultView.getComputedStyle ?
doc.defaultView.getComputedStyle( thumb.container, null )[ prop ] :
$container.css( prop );
};
thumb.data = {
width : Utils.parseValue( getStyle( 'width' ) ),
height : Utils.parseValue( getStyle( 'height' ) ),
order : i
};
// grab & reset size for smoother thumbnail loads
$container.css(( o.thumb_fit && o.thumb_crop !== true ) ?
{ width: 0, height: 0 } :
{ width: thumb.data.width, height: thumb.data.height });
// load the thumbnail
thumb.load( src, function( thumb ) {
// scale when ready
thumb.scale({
width: thumb.data.width,
height: thumb.data.height,
crop: o.thumb_crop,
margin: o.thumb_margin,
complete: function( thumb ) {
// shrink thumbnails to fit
var top = ['left', 'top'];
var arr = ['Width', 'Height'];
// calculate shrinked positions
$.each(arr, function( i, meassure ) {
var m = meassure.toLowerCase();
if ( (o.thumb_crop !== true || o.thumb_crop == m ) && o.thumb_fit ) {
var css = {};
css[m] = thumb[m];
$( thumb.container ).css( css );
css = {};
css[top[i]] = 0;
$( thumb.image ).css( css);
}
// cache outer meassures
thumb['outer' + meassure] = $( thumb.container )['outer' + meassure]( true );
});
// set high quality if downscale is moderate
Utils.toggleQuality( thumb.image,
o.thumb_quality === true ||
( o.thumb_quality == 'auto' && thumb.original.width < thumb.width * 3 )
);
// trigger the THUMBNAIL event
self.trigger({
type: Galleria.THUMBNAIL,
thumbTarget: thumb.image,
index: thumb.data.order
});
}
});
});
// preload all images here
if ( o.preload == 'all' ) {
thumb.add( data.image );
}
// create empty spans if thumbnails is set to 'empty'
} else if ( optval == 'empty' || optval == 'numbers' ) {
thumb = {
container: Utils.create( 'galleria-image' ),
image: Utils.create( 'img', 'span' ),
ready: true
};
// create numbered thumbnails
if ( optval == 'numbers' ) {
$( thumb.image ).text( i + 1 );
}
$( thumb.container ).append( thumb.image );
this.$( 'thumbnails' ).append( thumb.container );
self.trigger({
type: Galleria.THUMBNAIL,
thumbTarget: thumb.image,
index: i
});
// create null object to silent errors
} else {
thumb = {
container: null,
image: null
};
}
// add events for thumbnails
// you can control the event type using thumb_event_type
// we'll add the same event to the source if it's kept
$( thumb.container ).add( o.keep_source && o.link_source_images ? data.original : null )
.data('index', i).bind(o.thumb_event_type, function(e) {
// pause if option is set
if ( o.pause_on_interaction ) {
self.pause();
}
// extract the index from the data
var index = $( e.currentTarget ).data( 'index' );
if ( self.getIndex() !== index ) {
self.show( index );
}
e.preventDefault();
});
this._thumbnails.push( thumb );
}
// make sure we have a stageHeight && stageWidth
Utils.wait({
until: function() {
self._stageWidth = self.$( 'stage' ).width();
self._stageHeight = self.$( 'stage' ).height();
return( self._stageWidth && self._stageHeight > 50 ); // what is an acceptable height?
},
success: function() {
self.trigger( Galleria.READY );
},
error: function() {
Galleria.raise('stage meassures not found');
}
});
},
/**
Loads data into the gallery.
You can call this method on an existing gallery to reload the gallery with new data.
@param {Array or String} source Optional JSON array of data or selector of where to find data in the document.
Defaults to the Galleria target or data_source option.
@param {String} selector Optional element selector of what elements to parse.
Defaults to 'img'.
@param {Function} config Optional function to modify the data extraction proceedure from the selector.
See the data_config option for more information.
@returns {Galleria}
*/
load : function( source, selector, config ) {
var self = this;
// empty the data array
this._data = [];
// empty the thumbnails
this._thumbnails = [];
this.$('thumbnails').empty();
// shorten the arguments
if ( typeof selector == 'function' ) {
config = selector;
selector = null;
}
// use the source set by target
source = source || this._options.data_source;
// use selector set by option
selector = selector || this._options.data_selector;
// use the data_config set by option
config = config || this._options.data_config;
// check if the data is an array already
if ( source.constructor == Array ) {
if ( this.validate( source) ) {
this._data = source;
this.trigger( Galleria.DATA );
} else {
Galleria.raise( 'Load failed: JSON Array not valid.' );
}
return this;
}
// loop through images and set data
$( source ).find( selector ).each( function( i, img ) {
var data = {},
img = $( img ),
parent = img.parent(),
href = parent.attr( 'href' );
// check if it's a link to another image
if ( /\.(png|gif|jpg|jpeg)$/i.test(href) ) {
data.image = href;
// else assign the href as a link if it exists
} else if ( href ) {
data.link = href;
}
// mix default extractions with the hrefs and config
// and push it into the data array
self._data.push( $.extend({
title: img.attr('title'),
thumb: img.attr('src'),
image: img.attr('src'),
description: img.attr('alt'),
link: img.attr('longdesc'),
original: img.get(0) // saved as a reference
}, data, config( img ) ) );
});
// trigger the DATA event and return
if ( this.getDataLength() ) {
this.trigger( Galleria.DATA );
} else {
Galleria.raise('Load failed: no data found.');
}
return this;
},
_getActive: function() {
return this._controls.getActive();
},
validate : function( data ) {
// todo: validate a custom data array
return true;
},
/**
Bind any event to Galleria
@param {String} type The Event type to listen for
@param {Function} fn The function to execute when the event is triggered
@example this.bind( Galleria.IMAGE, function() { Galleria.log('image shown') });
@returns {Galleria}
*/
bind : function(type, fn) {
this.$( 'container' ).bind( type, this.proxy(fn) );
return this;
},
/**
Unbind any event to Galleria
@param {String} type The Event type to forget
@returns {Galleria}
*/
unbind : function(type) {
this.$( 'container' ).unbind( type );
return this;
},
/**
Manually trigger a Galleria event
@param {String} type The Event to trigger
@returns {Galleria}
*/
trigger : function( type ) {
type = typeof type == 'object' ?
$.extend( type, { scope: this } ) :
{ type: type, scope: this };
this.$( 'container' ).trigger( type );
return this;
},
/**
Assign an "idle state" to any element.
The idle state will be applied after a certain amount of idle time
Useful to hide f.ex navigation when the gallery is inactive
@param {HTML Element or String} elem The Dom node or selector to apply the idle state to
@param {Object} styles the CSS styles to apply
@example addIdleState( this.get('image-nav'), { opacity: 0 });
@example addIdleState( '.galleria-image-nav', { top: -200 });
@returns {Galleria}
*/
addIdleState: function( elem, styles ) {
this._idle.add.apply( this._idle, Utils.array( arguments ) );
return this;
},
/**
Removes any idle state previously set using addIdleState()
@param {HTML Element or String} elem The Dom node or selector to remove the idle state from.
@returns {Galleria}
*/
removeIdleState: function( elem ) {
this._idle.remove.apply( this._idle, Utils.array( arguments ) );
return this;
},
/**
Force Galleria to enter idle mode.
@returns {Galleria}
*/
enterIdleMode: function() {
this._idle.hide();
return this;
},
/**
Force Galleria to exit idle mode.
@returns {Galleria}
*/
exitIdleMode: function() {
this.idle._show();
return this;
},
/**
Enter FullScreen mode
@param {Function} callback the function to be executed when the fullscreen mode is fully applied.
@returns {Galleria}
*/
enterFullscreen: function( callback ) {
this._fullscreen.enter.apply( this, Utils.array( arguments ) );
return this;
},
/**
Exits FullScreen mode
@param {Function} callback the function to be executed when the fullscreen mode is fully applied.
@returns {Galleria}
*/
exitFullscreen: function( callback ) {
this._fullscreen.exit.apply( this, Utils.array( arguments ) );
return this;
},
/**
Adds a tooltip to any element.
You can also call this method with an object as argument with elemID:value pairs to apply tooltips to (see examples)
@param {HTML Element} elem The DOM Node to attach the event to
@param {String or Function} value The tooltip message. Can also be a function that returns a string.
@example this.bindTooltip( this.get('thumbnails'), 'My thumbnails');
@example this.bindTooltip( this.get('thumbnails'), function() { return 'My thumbs' });
@example this.bindTooltip( { image_nav: 'Navigation' });
@returns {Galleria}
*/
bindTooltip: function( elem, value ) {
this._tooltip.bind.apply( this._tooltip, Utils.array(arguments) );
return this;
},
/**
Redefine a tooltip
Use this if you want to change the tooltip value at runtime
@param {HTML Element} elem The DOM Node to attach the event to
@param {String or Function} value The tooltip message. Can also be a function that returns a string.
@returns {Galleria}
*/
defineTooltip: function( elem, value ) {
this._tooltip.define.apply( this._tooltip, Utils.array(arguments) );
return this;
},
// leave this out of the API for now
refreshTooltip: function() {
this._tooltip.refresh.apply( this._tooltip, Utils.array(arguments) );
return this;
},
/**
Open a pre-designed lightbox with the currently active image.
You can control some visuals using gallery options.
@returns {Galleria}
*/
openLightbox: function() {
this._lightbox.show.apply( this._lightbox, Utils.array( arguments ) );
return this;
},
/**
Close the lightbox.
@returns {Galleria}
*/
closeLightbox: function() {
this._lightbox.hide.apply( this._lightbox, Utils.array( arguments ) );
return this;
},
/**
Get the currently active image element.
@returns {HTML Element} The image element
*/
getActiveImage: function() {
return this._getActive().image || undef;
},
/**
Get the currently active thumbnail element.
@returns {HTML Element} The thumbnail element
*/
getActiveThumb: function() {
return this._thumbnails[ this._active ].image || undef;
},
/**
Get the mouse position relative to the gallery container
@param e The mouse event
@example
var gallery = this;
$(document).mousemove(function(e) {
console.log( gallery.getMousePosition(e).x );
});
@returns {Object} Object with x & y of the relative mouse postion
*/
getMousePosition : function(e) {
return {
x: e.pageX - this.$( 'stage' ).offset().left,
y: e.pageY - this.$( 'stage' ).offset().top
};
},
/**
Adds a panning effect to the image
@param img The optional image element. If not specified it takes the currently active image
@returns {Galleria}
*/
addPan : function( img ) {
if ( this._options.image_crop === false ) {
return;
}
img = $( img || this.getActiveImage() );
// define some variables and methods
var self = this,
x = img.width() / 2,
y = img.height() / 2,
curX = destX = parseInt( img.css( 'left' ) ) || 0,
curY = destY = parseInt( img.css( 'top' ) ) || 0,
distX = 0,
distY = 0,
active = false,
ts = Utils.timestamp(),
cache = 0,
move = 0,
// positions the image
position = function( dist, cur, pos ) {
if ( dist > 0 ) {
move = Math.round( Math.max( dist * -1, Math.min( 0, cur ) ) );
if ( cache != move ) {
cache = move;
if ( IE == 8 ) { // scroll is faster for IE
img.parent()[ 'scroll' + pos ]( move * -1 );
} else {
var css = {};
css[ pos.toLowerCase() ] = move;
img.css(css);
}
}
}
},
// calculates mouse position after 50ms
calculate = function(e) {
if (Utils.timestamp() - ts < 50) {
return;
}
active = true;
x = self.getMousePosition(e).x;
y = self.getMousePosition(e).y;
},
// the main loop to check
loop = function(e) {
if (!active) {
return;
}
distX = img.width() - self._stageWidth;
distY = img.height() - self._stageHeight;
destX = x / self._stageWidth * distX * -1;
destY = y / self._stageHeight * distY * -1;
curX += ( destX - curX ) / self._options.image_pan_smoothness;
curY += ( destY - curY ) / self._options.image_pan_smoothness;
position( distY, curY, 'Top' );
position( distX, curX, 'Left' );
};
// we need to use scroll in IE8 to speed things up
if ( IE == 8 ) {
img.parent().scrollTop( curY * -1 ).scrollLeft( curX * -1 );
img.css({
top: 0,
left: 0
});
}
// unbind and bind event
this.$( 'stage' ).unbind( 'mousemove', calculate ).bind( 'mousemove', calculate );
// loop the loop
Utils.addTimer('pan', loop, 50, true);
return this;
},
/**
Brings the scope into any callback
@param fn The callback to bring the scope into
@param scope Optional scope to bring
@example $('#fullscreen').click( this.proxy(function() { this.enterFullscreen(); }) )
@returns {Function} Return the callback with the gallery scope
*/
proxy : function( fn, scope ) {
if ( typeof fn !== 'function' ) {
return function() {};
}
scope = scope || this;
return function() {
return fn.apply( scope, Utils.array( arguments ) );
};
},
/**
Removes the panning effect set by addPan()
@returns {Galleria}
*/
removePan: function() {
if ( IE == 8 ) {
// todo: doublecheck this
}
this.$( 'stage' ).unbind( 'mousemove' );
Utils.clearTimer('pan');
return this;
},
/**
Adds an element to the Galleria DOM array.
When you add an element here, you can access it using element ID in many API calls
@param {String} id The element ID you wish to use. You can add many elements by adding more arguments.
@example addElement('mybutton');
@example addElement('mybutton','mylink');
@returns {Galleria}
*/
addElement : function( id ) {
var dom = this._dom;
$.each( Utils.array(arguments), function( i, blueprint ) {
dom[ blueprint ] = Utils.create( 'galleria-' + blueprint );
});
return this;
},
/**
Attach keyboard events to Galleria
@param {Object} map The map object of events.
Possible keys are 'UP', 'DOWN', 'LEFT', 'RIGHT', 'RETURN', 'ESCAPE', 'BACKSPACE', and 'SPACE'.
@example
this.attachKeyboard({
right: this.next,
left: this.prev,
up: function() {
console.log( 'up key pressed' )
}
});
@returns {Galleria}
*/
attachKeyboard : function( map ) {
this._keyboard.attach.apply( this._keyboard, Utils.array( arguments ) );
return this;
},
/**
Detach all keyboard events to Galleria
@returns {Galleria}
*/
detachKeyboard : function() {
this._keyboard.detach.apply( this._keyboard, Utils.array( arguments ) );
return this;
},
/**
Fast helper for appending galleria elements that you added using addElement()
@param {String} parentID The parent element ID where the element will be appended
@param {String} childID the element ID that should be appended
@example this.addElement('myElement');
this.appendChild( 'info', 'myElement' );
@returns {Galleria}
*/
appendChild : function( parentID, childID ) {
this.$( parentID ).append( this.get( childID ) || childID );
return this;
},
/**
Fast helper for appending galleria elements that you added using addElement()
@param {String} parentID The parent element ID where the element will be preppended
@param {String} childID the element ID that should be preppended
@example
this.addElement('myElement');
this.prependChild( 'info', 'myElement' );
@returns {Galleria}
*/
prependChild : function( parentID, childID ) {
this.$( parentID ).prepend( this.get( childID ) || childID );
return this;
},
/**
Remove an element by blueprint
@param {String} elemID The element to be removed.
You can remove multiple elements by adding arguments.
@returns {Galleria}
*/
remove : function( elemID ) {
this.$( Utils.array( arguments ).join(',') ).remove();
return this;
},
// a fast helper for building dom structures
// leave this out of the API for now
append : function( data ) {
for( var i in data) {
if ( data[i].constructor == Array ) {
for( var j = 0; data[i][j]; j++ ) {
this.appendChild( i, data[i][j] );
}
} else {
this.appendChild( i, data[i] );
}
}
return this;
},
// an internal helper for scaling according to options
_scaleImage : function( image, options ) {
options = $.extend({
width: this._stageWidth,
height: this._stageHeight,
crop: this._options.image_crop,
max: this._options.max_scale_ratio,
min: this._options.min_scale_ratio,
margin: this._options.image_margin,
position: this._options.image_position
}, options );
( image || this._controls.getActive() ).scale( options );
return this;
},
/**
Updates the carousel,
useful if you resize the gallery and want to re-check if the carousel nav is needed.
@returns {Galleria}
*/
updateCarousel : function() {
this._carousel.update();
return this;
},
/**
Rescales the gallery
@param {Number} width The target width
@param {Number} height The target height
@param {Function} complete The callback to be called when the scaling is complete
@returns {Galleria}
*/
rescale : function( width, height, complete ) {
var self = this;
// allow rescale(fn)
if ( typeof width == 'function' ) {
complete = width;
width = undef;
}
var scale = function() {
// shortcut
var o = self._options;
// set stagewidth
self._stageWidth = width || self.$( 'stage' ).width();
self._stageHeight = height || self.$( 'stage' ).height();
// scale the active image
self._scaleImage();
if ( self._options.carousel ) {
self.updateCarousel();
}
self.trigger( Galleria.RESCALE );
if ( typeof complete == 'function' ) {
complete.call( self );
}
};
if ( Galleria.WEBKIT && !width && !height ) {
Utils.addTimer( 'scale', scale, 5 );// webkit is too fast
} else {
scale.call( self );
}
return this;
},
/**
Refreshes the gallery.
Useful if you change image options at runtime and want to apply the changes to the active image.
@returns {Galleria}
*/
refreshImage : function() {
this._scaleImage();
if ( this._options.image_pan ) {
this.addPan();
}
return this;
},
/**
Shows an image by index
@param {Number} index The index to show
@param {Boolean} rewind A boolean that should be true if you want the transition to go back
@returns {Galleria}
*/
show : function( index, rewind, _history ) {
// do nothing if index is false or queue is false and transition is in progress
if ( index === false || !this._options.queue && this._queue.stalled ) {
return;
}
index = Math.max( 0, Math.min( parseInt(index), this.getDataLength() - 1 ) );
rewind = typeof rewind != 'undefined' ? !!rewind : index < this.getIndex();
_history = _history || false;
// do the history thing and return
if ( !_history && Galleria.History ) {
Galleria.History.value( index.toString() );
return;
}
this._active = index;
Array.prototype.push.call( this._queue, {
index : index,
rewind : rewind
});
if ( !this._queue.stalled ) {
this._show();
}
return this;
},
// the internal _show method does the actual showing
_show : function() {
// shortcuts
var self = this,
queue = this._queue[ 0 ],
data = this.getData( queue.index );
if ( !data ) {
return;
}
var src = data.image,
active = this._controls.getActive(),
next = this._controls.getNext(),
cached = next.isCached( src ),
thumb = this._thumbnails[ queue.index ];
// to be fired when loading & transition is complete:
var complete = function() {
// remove stalled
self._queue.stalled = false;
// optimize quality
Utils.toggleQuality( next.image, self._options.image_quality );
// swap
$( active.container ).css({
zIndex: 0,
opacity: 0
});
$( next.container ).css({
zIndex: 1,
opacity: 1
});
self._controls.swap();
// add pan according to option
if ( self._options.image_pan ) {
self.addPan( next.image );
}
// make the image link
if ( data.link ) {
$( next.image ).css({
cursor: 'pointer'
}).bind( CLICK(), function() {
// popup link
if ( self._options.popup_links ) {
var win = window.open( data.link, '_blank' );
} else {
window.location.href = data.link;
}
});
}
// remove the queued image
Array.prototype.shift.call( self._queue );
// if we still have images in the queue, show it
if ( self._queue.length ) {
self._show();
}
// check if we are playing
self._playCheck();
// trigger IMAGE event
self.trigger({
type: Galleria.IMAGE,
index: queue.index,
imageTarget: next.image,
thumbTarget: thumb.image
});
};
// let the carousel follow
if ( this._options.carousel && this._options.carousel_follow ) {
this._carousel.follow( queue.index );
}
// preload images
if ( this._options.preload ) {
var p,
n = this.getNext();
try {
for ( var i = this._options.preload; i > 0; i-- ) {
p = new Galleria.Picture();
p.add( self.getData( n ).image );
n = self.getNext( n );
}
} catch(e) {}
}
// show the next image, just in case
Utils.show( next.container );
// add active classes
$( self._thumbnails[ queue.index ].container )
.addClass( 'active' )
.siblings( '.active' )
.removeClass( 'active' );
// trigger the LOADSTART event
self.trigger( {
type: Galleria.LOADSTART,
cached: cached,
index: queue.index,
imageTarget: next.image,
thumbTarget: thumb.image
});
// begin loading the next image
next.load( src, function( next ) {
self._scaleImage( next, {
complete: function( next ) {
Utils.show( next.container );
// toggle low quality for IE
if ( 'image' in active ) {
Utils.toggleQuality( active.image, false );
}
Utils.toggleQuality( next.image, false );
// stall the queue
self._queue.stalled = true;
// remove the image panning, if applied
// TODO: rethink if this is necessary
self.removePan();
// set the captions and counter
self.setInfo( queue.index );
self.setCounter( queue.index );
// trigger the LOADFINISH event
self.trigger({
type: Galleria.LOADFINISH,
cached: cached,
index: queue.index,
imageTarget: next.image,
thumbTarget: self._thumbnails[ queue.index ].image
});
var transition = active.image === null && self._options.transition_initial ?
self._options.transition_initial : self._options.transition;
// validate the transition
if ( transition in _transitions === false ) {
complete();
} else {
var params = {
prev: active.image,
next: next.image,
rewind: queue.rewind,
speed: self._options.transition_speed || 400
};
// call the transition function and send some stuff
_transitions[ transition ].call(self, params, complete );
}
}
});
});
},
/**
Gets the next index
@param {Number} base Optional starting point
@returns {Number} the next index, or the first if you are at the first (looping)
*/
getNext : function( base ) {
base = typeof base == 'number' ? base : this.getIndex();
return base == this.getDataLength() - 1 ? 0 : base + 1;
},
/**
Gets the previous index
@param {Number} base Optional starting point
@returns {Number} the previous index, or the last if you are at the first (looping)
*/
getPrev : function( base ) {
base = typeof base == 'number' ? base : this.getIndex();
return base === 0 ? this.getDataLength() - 1 : base - 1;
},
/**
Shows the next image in line
@returns {Galleria}
*/
next : function() {
if ( this.getDataLength() > 1 ) {
this.show( this.getNext(), false );
}
return this;
},
/**
Shows the previous image in line
@returns {Galleria}
*/
prev : function() {
if ( this.getDataLength() > 1 ) {
this.show( this.getPrev(), true );
}
return this;
},
/**
Retrieve a DOM element by element ID
@param {String} elemId The delement ID to fetch
@returns {HTML Element} The elements DOM node or null if not found.
*/
get : function( elemId ) {
return elemId in this._dom ? this._dom[ elemId ] : null;
},
/**
Retrieve a data object
@param {Number} index The data index to retrieve.
If no index specified it will take the currently active image
@returns {Object} The data object
*/
getData : function( index ) {
return index in this._data ?
this._data[ index ] : this._data[ this._active ];
},
/**
Retrieve the number of data items
@returns {Number} The data length
*/
getDataLength : function() {
return this._data.length;
},
/**
Retrieve the currently active index
@returns {Number} The active index
*/
getIndex : function() {
return typeof this._active === 'number' ? this._active : false;
},
/**
Retrieve the stage height
@returns {Number} The stage height
*/
getStageHeight : function() {
return this._stageHeight;
},
/**
Retrieve the stage width
@returns {Number} The stage width
*/
getStageWidth : function() {
return this._stageWidth;
},
/**
Retrieve the option
@param {String} key The option key to retrieve. If no key specified it will return all options in an object.
@returns option or options
*/
getOptions : function( key ) {
return typeof key == 'undefined' ? this._options : this._options[ key ];
},
/**
Set options to the instance.
You can set options using a key & value argument or a single object argument (see examples)
@param {String} key The option key
@param {String} value the the options value
@example setOptions( 'autoplay', true )
@example setOptions({ autoplay: true });
@returns {Galleria}
*/
setOptions : function( key, value ) {
if ( typeof key == 'object' ) {
$.extend( this._options, key );
} else {
this._options[ key ] = value;
}
return this;
},
/**
Starts playing the slideshow
@param {Number} delay Sets the slideshow interval in milliseconds.
If you set it once, you can just call play() and get the same interval the next time.
@returns {Galleria}
*/
play : function( delay ) {
this.trigger( Galleria.PLAY );
this._playing = true;
this._playtime = delay || this._playtime;
this._playCheck();
return this;
},
/**
Stops the slideshow if currently playing
@returns {Galleria}
*/
pause : function() {
this.trigger( Galleria.PAUSE );
this._playing = false;
return this;
},
/**
Toggle between play and pause events.
@param {Number} delay Sets the slideshow interval in milliseconds.
@returns {Galleria}
*/
playToggle : function( delay ) {
return ( this._playing ) ? this.pause() : this.play( delay );
},
_playCheck : function() {
var self = this,
played = 0,
interval = 20,
now = Utils.timestamp();
if ( this._playing ) {
Utils.clearTimer('play');
var fn = function() {
played = Utils.timestamp() - now;
if ( played >= self._playtime && self._playing ) {
Utils.clearTimer('play');
self.next();
return;
}
if ( self._playing ) {
// trigger the PROGRESS event
self.trigger({
type: Galleria.PROGRESS,
percent: Math.ceil( played / self._playtime * 100 ),
seconds: Math.floor( played / 1000 ),
milliseconds: played
});
Utils.addTimer( 'play', fn, interval );
}
};
Utils.addTimer( 'play', fn, interval );
}
},
setIndex: function( val ) {
this._active = val;
return this;
},
/**
Manually modify the counter
@param {Number} index Optional data index to fectch,
if no index found it assumes the currently active index
@returns {Galleria}
*/
setCounter: function( index ) {
if ( typeof index == 'number' ) {
index++;
} else if ( typeof index == 'undefined' ) {
index = this.getIndex()+1;
}
this.get( 'current' ).innerHTML = index;
if ( IE == 8 ) { // weird IE8 bug
var opacity = this.$( 'counter' ).css( 'opacity' );
this.$( 'counter' ).css( 'opacity', opacity );
}
return this;
},
/**
Manually set captions
@param {Number} index Optional data index to fectch and apply as caption,
if no index found it assumes the currently active index
@returns {Galleria}
*/
setInfo : function( index ) {
var self = this,
data = this.getData( index );
$.each( ['title','description','author'], function( i, type ) {
var elem = self.$( 'info-' + type );
if ( !!data[type] ) {
elem[ data[ type ].length ? 'show' : 'hide' ]().html( data[ type ] );
} else {
elem.empty().hide();
}
});
return this;
},
/**
Checks if the data contains any captions
@param {Number} index Optional data index to fectch,
if no index found it assumes the currently active index.
@returns {Boolean}
*/
hasInfo : function( index ) {
var d = this.getData( index );
var check = 'title description'.split(' ');
for ( var i = 0; check[i]; i++ ) {
if ( !!this.getData( index )[ check[i] ] ) {
return true;
}
}
return false;
},
jQuery : function( str ) {
var self = this,
ret = [];
$.each( str.split(','), function( i, elemId ) {
elemId = $.trim( elemId );
if ( self.get( elemId ) ) {
ret.push( elemId );
}
});
var jQ = $( self.get( ret.shift() ) );
$.each( ret, function( i, elemId ) {
jQ = jQ.add( self.get( elemId ) );
});
return jQ;
},
/**
Converts element IDs into a jQuery collection
You can call for multiple IDs separated with commas.
@param {String} str One or more element IDs (comma-separated)
@returns {jQuery}
@example this.$('info,container').hide();
*/
$ : function() {
return this.jQuery.apply( this, Utils.array( arguments ) );
}
};
// End of Galleria prototype
$.extend( Galleria, {
// Event placeholders
DATA: 'g_data',
READY: 'g_ready',
THUMBNAIL: 'g_thumbnail',
LOADSTART: 'g_loadstart',
LOADFINISH: 'g_loadfinish',
IMAGE: 'g_image',
THEMELOAD: 'g_themeload',
PLAY: 'g_play',
PAUSE: 'g_pause',
PROGRESS: 'g_progress',
FULLSCREEN_ENTER: 'g_fullscreen_enter',
FULLSCREEN_EXIT: 'g_fullscreen_exit',
IDLE_ENTER: 'g_idle_enter',
IDLE_EXIT: 'g_idle_exit',
RESCALE: 'g_rescale',
LIGHTBOX_OPEN: 'g_lightbox_open',
LIGHTBOX_CLOSE: 'g_lightbox_close',
LIGHTBOX_IMAGE: 'g_lightbox_image',
// Browser helpers
IE9: IE == 9,
IE8: IE == 8,
IE7: IE == 7,
IE6: IE == 6,
IE: !!IE,
WEBKIT: /webkit/.test( NAV ),
SAFARI: /safari/.test( NAV ),
CHROME: /chrome/.test( NAV ),
QUIRK: ( IE && doc.compatMode && doc.compatMode == "BackCompat" ),
MAC: /mac/.test( navigator.platform.toLowerCase() ),
OPERA: !!window.opera,
IPHONE: /iphone/.test( NAV ),
IPAD: /ipad/.test( NAV ),
ANDROID: /android/.test( NAV ),
// Todo detect touch devices in a better way, possibly using event detection
TOUCH: !!( /iphone/.test( NAV ) || /ipad/.test( NAV ) || /android/.test( NAV ) )
});
// Galleria static methods
/**
Adds a theme that you can use for your Gallery
@param {Object} theme Object that should contain all your theme settings.
<ul>
<li>name – name of the theme</li>
<li>author - name of the author</li>
<li>version - version number</li>
<li>css - css file name (not path)</li>
<li>defaults - default options to apply, including theme-specific options</li>
<li>init - the init function</li>
</ul>
@returns {Object} theme
*/
Galleria.addTheme = function( theme ) {
// make sure we have a name
if ( !!theme['name'] === false ) {
Galleria.raise('No theme name specified');
}
if ( typeof theme.defaults != 'object' ) {
theme.defaults = {};
}
if ( typeof theme.css == 'string' ) {
var css;
// look for the absolute path
$('script').each(function( i, script ) {
// look for the theme script
var reg = new RegExp( 'galleria\\.' + theme.name.toLowerCase() + '\\.' );
if( reg.test( script.src )) {
// we have a match
css = script.src.replace(/[^\/]*$/, '') + theme.css;
Utils.addTimer( "css", function() {
Utils.loadCSS( css, 'galleria-theme', function() {
Galleria.theme = theme;
$doc.trigger( Galleria.THEMELOAD );
});
}, 1);
}
});
if ( !css ) {
Galleria.raise('No theme CSS loaded');
}
}
return theme;
};
/**
loadTheme loads a theme js file and attaches a load event to Galleria
@param {String} src The relative path to the theme source file
@param {Object} option Optional options you want to apply
*/
Galleria.loadTheme = function( src, options ) {
var loaded = false,
length = _galleries.length;
// first clear the current theme, if exists
Galleria.theme = undef;
// load the theme
Utils.loadScript( src, function() {
loaded = true;
} );
// set a 1 sec timeout, then display a hard error if no theme is loaded
Utils.wait({
until: function() {
return loaded;
},
error: function() {
Galleria.raise( "Theme at " + src + " could not load, check theme path.", true );
},
success: function() {
// check for existing galleries and reload them with the new theme
if ( length ) {
// temporary save the new galleries
var refreshed = [];
// refresh all instances
// when adding a new theme to an existing gallery, all options will be resetted but the data will be kept
// you can apply new options as a second argument
$.each( Galleria.get(), function(i, instance) {
// mix the old data and options into the new instance
var op = $.extend( instance._original.options, {
data_source: instance._data
}, options);
// remove the old container
instance.$('container').remove();
// create a new instance
var g = new Galleria();
// move the id
g._id = instance._id;
// initialize the new instance
g.init( instance._original.target, op );
// push the new instance
refreshed.push( g );
});
// now overwrite the old holder with the new instances
_galleries = refreshed;
}
},
timeout: 2000
});
};
/**
Retrieves a Galleria instance.
@param {Number} index Optional index to retrieve.
If no index is supplied, the method will return all instances in an array.
@returns {Galleria or Array}
*/
Galleria.get = function( index ) {
if ( !!_galleries[ index ] ) {
return _galleries[ index ];
} else if ( typeof index !== 'number' ) {
return _galleries;
} else {
Galleria.raise('Gallery index ' + index + ' not found');
}
};
/**
Creates a transition to be used in your gallery
@param {String} name The name of the transition that you will use as an option
@param {Function} fn The function to be executed in the transition.
The function contains two arguments, params and complete.
Use the params Object to integrate the transition, and then call complete when you are done.
*/
Galleria.addTransition = function( name, fn ) {
_transitions[name] = fn;
};
Galleria.utils = Utils;
/**
A helper metod for cross-browser logging.
It uses the console log if available otherwise it falls back to the opera
debugger and finally <code>alert()</code>
@example Galleria.log("hello", document.body, [1,2,3]);
*/
Galleria.log = function() {
try {
window.console.log.apply( window.console, Utils.array(arguments) );
} catch( e ) {
try {
opera.postError.apply( opera, arguments );
} catch( er ) {
alert( Utils.array(arguments).split(', ') );
}
}
};
/**
Method for raising errors
@param {String} msg The message to throw
@param {Boolean} fatal Set this to true to override debug settings and display a fatal error
*/
Galleria.raise = function( msg, fatal ) {
if ( DEBUG || fatal ) {
var type = fatal ? 'Fatal error' : 'Error';
throw new Error( type + ': ' + msg );
}
};
/**
Adds preload, cache, scale and crop functionality
@constructor
@requires jQuery
@param {Number} id Optional id to keep track of instances
*/
Galleria.Picture = function( id ) {
// save the id
this.id = id || null;
// the image should be null until loaded
this.image = null;
// Create a new container
this.container = Utils.create('galleria-image');
// add container styles
$( this.container ).css({
overflow: 'hidden',
position: 'relative' // for IE Standards mode
});
// saves the original meassurements
this.original = {
width: 0,
height: 0
};
// flag when the image is ready
this.ready = false;
// flag when the image is loaded
this.loaded = false;
};
Galleria.Picture.prototype = {
// the inherited cache object
cache: {},
// creates a new image and adds it to cache when loaded
add: function( src ) {
var self = this;
// create the image
var image = new Image();
// force a block display
$( image ).css( 'display', 'block');
if ( self.cache[ src ] ) {
// no need to onload if the image is cached
image.src = src;
self.loaded = true;
self.original = {
height: image.height,
width: image.width
};
return image;
}
// begin preload and insert in cache when done
image.onload = function() {
self.original = {
height: this.height,
width: this.width
};
self.cache[ src ] = src; // will override old cache
self.loaded = true;
};
image.src = src;
return image;
},
// show the image on stage
show: function() {
Utils.show( this.image );
},
// hide the image
hide: function() {
Utils.moveOut( this.image );
},
clear: function() {
this.image = null;
},
/**
Checks if an image is in cache
@param {String} src The image source path, ex '/path/to/img.jpg'
@returns {Boolean}
*/
isCached: function( src ) {
return !!this.cache[src];
},
/**
Loads an image and call the callback when ready.
Will also add the image to cache.
@param {String} src The image source path, ex '/path/to/img.jpg'
@param {Function} callback The function to be executed when the image is loaded & scaled
@returns {jQuery} The image container object
*/
load: function(src, callback) {
// save the instance
var self = this;
$( this.container ).empty(true);
// add the image to cache and hide it
this.image = this.add( src );
Utils.hide( this.image );
// append the image into the container
$( this.container ).append( this.image );
// check for loaded image using a timeout
Utils.wait({
until: function() {
// TODO this should be properly tested in Opera
return self.loaded && self.image.complete && self.image.width;
},
success: function() {
// call success
window.setTimeout(function() { callback.call( self, self ); }, 50 );
},
error: function() {
window.setTimeout(function() { callback.call( self, self ); }, 50 );
Galleria.raise('image not loaded in 10 seconds: '+ src);
},
timeout: 10000
});
// return the container
return this.container;
},
/**
Scales and crops the image
@param {Object} options The method takes an object with a number of options:
<ul>
<li>width - width of the container</li>
<li>height - height of the container</li>
<li>min - minimum scale ratio</li>
<li>max - maximum scale ratio</li>
<li>margin - distance in pixels from the image border to the container</li>
<li>complete - a callback that fires when scaling is complete</li>
<li>position - positions the image, works like the css background-image property.</li>
<li>crop - defines how to crop. Can be true, false, 'width' or 'height'</li>
</ul>
@returns {jQuery} The image container object
*/
scale: function( options ) {
// extend some defaults
options = $.extend({
width: 0,
height: 0,
min: undef,
max: undef,
margin: 0,
complete: function() {},
position: 'center',
crop: false
}, options);
// return the element if no image found
if (!this.image) {
return this.container;
}
// store locale variables of width & height
var width,
height,
self = this,
$container = $( self.container );
// wait for the width/height
Utils.wait({
until: function() {
width = options.width
|| $container.width()
|| Utils.parseValue( $container.css('width') );
height = options.height
|| $container.height()
|| Utils.parseValue( $container.css('height') );
return width && height;
},
success: function() {
// calculate some cropping
var newWidth = ( width - options.margin * 2 ) / self.original.width,
newHeight = ( height - options.margin * 2 ) / self.original.height,
cropMap = {
'true' : Math.max( newWidth, newHeight ),
'width' : newWidth,
'height': newHeight,
'false' : Math.min( newWidth, newHeight )
},
ratio = cropMap[ options.crop.toString() ];
// allow max_scale_ratio
if ( options.max ) {
ratio = Math.min( options.max, ratio );
}
// allow min_scale_ratio
if ( options.min ) {
ratio = Math.max( options.min, ratio );
}
$( self.container ).width( width ).height( height );
// round up the width / height
$.each( ['width','height'], function( i, m ) {
$( self.image )[ m ]( self[ m ] = Math.ceil( self.original[ m ] * ratio ) );
});
// calculate image_position
var pos = {},
mix = {},
getPosition = function(value, meassure, margin) {
var result = 0;
if (/\%/.test(value)) {
var flt = parseInt(value) / 100;
result = Math.ceil( $( self.image )[ meassure ]() * -1 * flt + margin * flt );
} else {
result = Utils.parseValue( value );
}
return result;
},
positionMap = {
'top': { top: 0 },
'left': { left: 0 },
'right': { left: '100%' },
'bottom': { top: '100%' }
};
$.each( options.position.toLowerCase().split(' '), function( i, value ) {
if ( value == 'center' ) {
value = '50%';
}
pos[i ? 'top' : 'left'] = value;
});
$.each( pos, function( i, value ) {
if ( positionMap.hasOwnProperty( value ) ) {
$.extend( mix, positionMap[ value ] );
}
});
pos = pos.top ? $.extend( pos, mix ) : mix;
pos = $.extend({
top: '50%',
left: '50%'
}, pos);
// apply position
$( self.image ).css({
position : 'relative',
top : getPosition(pos.top, 'height', height),
left : getPosition(pos.left, 'width', width)
});
// show the image
self.show();
// flag ready and call the callback
self.ready = true;
options.complete.call( self, self );
},
error: function() {
Galleria.raise('Could not scale image: '+self.image.src);
},
timeout: 1000
});
return this;
}
};
// our own easings
$.extend( $.easing, {
galleria: function (_, t, b, c, d) {
if ((t/=d/2) < 1) {
return c/2*t*t*t*t + b;
}
return -c/2 * ((t-=2)*t*t*t - 2) + b;
},
galleriaIn: function (_, t, b, c, d) {
return c*(t/=d)*t*t*t + b;
},
galleriaOut: function (_, t, b, c, d) {
return -c * ((t=t/d-1)*t*t*t - 1) + b;
}
});
// the plugin initializer
$.fn.galleria = function( options ) {
return this.each(function() {
var gallery = new Galleria();
gallery.init( this, options );
});
};
// expose Galleria
window.Galleria = Galleria;
// phew
})( jQuery );
