assets/js/galleryview/galleryview.js
/*
**
** GalleryView - jQuery Content Gallery Plugin
** Author: Jack Anderson
** Version: 2.1 (March 14, 2010)
**
** Please use this development script if you intend to make changes to the
** plugin code. For production sites, please use jquery.galleryview-2.1-pack.js.
**
** See README.txt for instructions on how to markup your HTML
**
** See CHANGELOG.txt for a review of changes and LICENSE.txt for the applicable
** licensing information.
**
*/
//Global variable to check if window is already loaded
//Used for calling GalleryView after page has loaded
var window_loaded = false;
(function($){
$.fn.galleryView = function(options) {
var opts = $.extend($.fn.galleryView.defaults,options);
var id;
var iterator = 0; // INT - Currently visible panel/frame
var item_count = 0; // INT - Total number of panels/frames
var slide_method; // STRING - indicator to slide entire filmstrip or just the pointer ('strip','pointer')
var theme_path = opts.theme_path; // STRING - relative path to theme directory
var paused = false; // BOOLEAN - flag to indicate whether automated transitions are active
// Element dimensions
var gallery_width;
var gallery_height;
var pointer_height;
var pointer_width;
var strip_width;
var strip_height;
var wrapper_width;
var f_frame_width;
var f_frame_height;
var frame_caption_size = 20;
var gallery_padding;
var filmstrip_margin;
var filmstrip_orientation;
// Arrays used to scale frames and panels
var frame_img_scale = {};
var panel_img_scale = {};
var img_h = {};
var img_w = {};
// Flag indicating whether to scale panel images
var scale_panel_images = true;
var panel_nav_displayed = false;
// Define jQuery objects for reuse
var j_gallery;
var j_filmstrip;
var j_frames;
var j_frame_img_wrappers;
var j_panels;
var j_pointer;
/*
** Plugin Functions
*/
/*
** showItem(int)
** Transition from current frame to frame i (1-based index)
*/
function showItem(i) {
// Disable next/prev buttons until transition is complete
// This prevents overlapping of animations
$('.nav-next-overlay',j_gallery).unbind('click');
$('.nav-prev-overlay',j_gallery).unbind('click');
$('.nav-next',j_gallery).unbind('click');
$('.nav-prev',j_gallery).unbind('click');
j_frames.unbind('click');
if(opts.show_filmstrip) {
// Fade out all frames
j_frames.removeClass('current').find('img').stop().animate({
'opacity':opts.frame_opacity
},opts.transition_speed);
// Fade in target frame
j_frames.eq(i).addClass('current').find('img').stop().animate({
'opacity':1.0
},opts.transition_speed);
}
//If necessary, fade out all panels while fading in target panel
if(opts.show_panels && opts.fade_panels) {
j_panels.fadeOut(opts.transition_speed).eq(i%item_count).fadeIn(opts.transition_speed,function(){
//If no filmstrip exists, re-bind click events to navigation buttons
if(!opts.show_filmstrip) {
$('.nav-prev-overlay',j_gallery).click(showPrevItem);
$('.nav-next-overlay',j_gallery).click(showNextItem);
$('.nav-prev',j_gallery).click(showPrevItem);
$('.nav-next',j_gallery).click(showNextItem);
}
});
}
// If gallery has a filmstrip, handle animation of frames
if(opts.show_filmstrip) {
// Slide either pointer or filmstrip, depending on transition method
if(slide_method=='strip') {
// Stop filmstrip if it's currently in motion
j_filmstrip.stop();
var distance;
var diststr;
if(filmstrip_orientation=='horizontal') {
// Determine distance between pointer (eventual destination) and target frame
distance = getPos(j_frames[i]).left - (getPos(j_pointer[0]).left+(pointer_width/2)-(f_frame_width/2));
diststr = (distance>=0?'-=':'+=')+Math.abs(distance)+'px';
// Animate filmstrip and slide target frame under pointer
j_filmstrip.animate({
'left':diststr
},opts.transition_speed,opts.easing,function(){
var old_i = i;
// After transition is complete, shift filmstrip so that a sufficient number of frames
// remain on either side of the visible filmstrip
if(i>item_count) {
i = i%item_count;
iterator = i;
j_filmstrip.css('left','-'+((f_frame_width+opts.frame_gap)*i)+'px');
} else if (i<=(item_count-strip_size)) {
i = (i%item_count)+item_count;
iterator = i;
j_filmstrip.css('left','-'+((f_frame_width+opts.frame_gap)*i)+'px');
}
// If the target frame has changed due to filmstrip shifting,
// make sure new target frame has 'current' class and correct size/opacity settings
if(old_i != i) {
j_frames.eq(old_i).removeClass('current').find('img').css({
'opacity':opts.frame_opacity
});
j_frames.eq(i).addClass('current').find('img').css({
'opacity':1.0
});
}
// If panels are not set to fade in/out, simply hide all panels and show the target panel
if(!opts.fade_panels) {
j_panels.hide().eq(i%item_count).show();
}
// Once animation is complete, re-bind click events to navigation buttons
$('.nav-prev-overlay',j_gallery).click(showPrevItem);
$('.nav-next-overlay',j_gallery).click(showNextItem);
$('.nav-prev',j_gallery).click(showPrevItem);
$('.nav-next',j_gallery).click(showNextItem);
enableFrameClicking();
});
} else { // filmstrip_orientation == 'vertical'
//Determine distance between pointer (eventual destination) and target frame
distance = getPos(j_frames[i]).top - (getPos(j_pointer[0]).top+(pointer_height)-(f_frame_height/2));
diststr = (distance>=0?'-=':'+=')+Math.abs(distance)+'px';
// Animate filmstrip and slide target frame under pointer
j_filmstrip.animate({
'top':diststr
},opts.transition_speed,opts.easing,function(){
// After transition is complete, shift filmstrip so that a sufficient number of frames
// remain on either side of the visible filmstrip
var old_i = i;
if(i>item_count) {
i = i%item_count;
iterator = i;
j_filmstrip.css('top','-'+((f_frame_height+opts.frame_gap)*i)+'px');
} else if (i<=(item_count-strip_size)) {
i = (i%item_count)+item_count;
iterator = i;
j_filmstrip.css('top','-'+((f_frame_height+opts.frame_gap)*i)+'px');
}
//If the target frame has changed due to filmstrip shifting,
//Make sure new target frame has 'current' class and correct size/opacity settings
if(old_i != i) {
j_frames.eq(old_i).removeClass('current').find('img').css({
'opacity':opts.frame_opacity
});
j_frames.eq(i).addClass('current').find('img').css({
'opacity':1.0
});
}
// If panels are not set to fade in/out, simply hide all panels and show the target panel
if(!opts.fade_panels) {
j_panels.hide().eq(i%item_count).show();
}
// Once animation is complete, re-bind click events to navigation buttons
$('.nav-prev-overlay',j_gallery).click(showPrevItem);
$('.nav-next-overlay',j_gallery).click(showNextItem);
$('.nav-prev',j_gallery).click(showPrevItem);
$('.nav-next',j_gallery).click(showNextItem);
enableFrameClicking();
});
}
} else if(slide_method=='pointer') {
// Stop pointer if it's currently in motion
j_pointer.stop();
// Get screen position of target frame
var pos = getPos(j_frames[i]);
if(filmstrip_orientation=='horizontal') {
// Slide the pointer over the target frame
j_pointer.animate({
'left':(pos.left+(f_frame_width/2)-(pointer_width/2)+'px')
},opts.transition_speed,opts.easing,function(){
if(!opts.fade_panels) {
j_panels.hide().eq(i%item_count).show();
}
$('.nav-prev-overlay',j_gallery).click(showPrevItem);
$('.nav-next-overlay',j_gallery).click(showNextItem);
$('.nav-prev',j_gallery).click(showPrevItem);
$('.nav-next',j_gallery).click(showNextItem);
enableFrameClicking();
});
} else {
// Slide the pointer over the target frame
j_pointer.animate({
'top':(pos.top+(f_frame_height/2)-(pointer_height)+'px')
},opts.transition_speed,opts.easing,function(){
if(!opts.fade_panels) {
j_panels.hide().eq(i%item_count).show();
}
$('.nav-prev-overlay',j_gallery).click(showPrevItem);
$('.nav-next-overlay',j_gallery).click(showNextItem);
$('.nav-prev',j_gallery).click(showPrevItem);
$('.nav-next',j_gallery).click(showNextItem);
enableFrameClicking();
});
}
}
}
};
/*
** extraWidth(jQuery element)
** Return the combined width of the border and padding to the elements left and right.
** If the border is non-numerical, assume zero (not ideal, will fix later)
** RETURNS - int
*/
function extraWidth(el) {
if(!el) { return 0; }
if(el.length==0) { return 0; }
el = el.eq(0);
var ew = 0;
ew += getInt(el.css('paddingLeft'));
ew += getInt(el.css('paddingRight'));
ew += getInt(el.css('borderLeftWidth'));
ew += getInt(el.css('borderRightWidth'));
return ew;
};
/*
** extraHeight(jQuery element)
** Return the combined height of the border and padding above and below the element
** If the border is non-numerical, assume zero (not ideal, will fix later)
** RETURN - int
*/
function extraHeight(el) {
if(!el) { return 0; }
if(el.length==0) { return 0; }
el = el.eq(0);
var eh = 0;
eh += getInt(el.css('paddingTop'));
eh += getInt(el.css('paddingBottom'));
eh += getInt(el.css('borderTopWidth'));
eh += getInt(el.css('borderBottomWidth'));
return eh;
};
/*
** showNextItem()
** Transition from current frame to next frame
*/
function showNextItem() {
// Cancel any transition timers until we have completed this function
$(document).stopTime("transition");
if(++iterator==j_frames.length) {iterator=0;}
// We've already written the code to transition to an arbitrary panel/frame, so use it
showItem(iterator);
// If automated transitions haven't been cancelled by an option or paused on hover, re-enable them
if(!paused) {
$(document).everyTime(opts.transition_interval,"transition",function(){
showNextItem();
});
}
};
/*
** showPrevItem()
** Transition from current frame to previous frame
*/
function showPrevItem() {
// Cancel any transition timers until we have completed this function
$(document).stopTime("transition");
if(--iterator<0) {iterator = item_count-1;}
// We've already written the code to transition to an arbitrary panel/frame, so use it
showItem(iterator);
// If automated transitions haven't been cancelled by an option or paused on hover, re-enable them
if(!paused) {
$(document).everyTime(opts.transition_interval,"transition",function(){
showNextItem();
});
}
};
/*
** getPos(jQuery element
** Calculate position of an element relative to top/left corner of gallery
** If the gallery bounding box itself is passed to the function, calculate position of gallery relative to top/left corner of browser window
** RETURNS - JSON {left: int, top: int}
*/
function getPos(el) {
var left = 0, top = 0;
var el_id = el.id;
if(el.offsetParent) {
do {
left += el.offsetLeft;
top += el.offsetTop;
} while(el = el.offsetParent);
}
//If we want the position of the gallery itself, return it
if(el_id == id) {return {'left':left,'top':top};}
//Otherwise, get position of element relative to gallery
else {
var gPos = getPos(j_gallery[0]);
var gLeft = gPos.left;
var gTop = gPos.top;
return {'left':left-gLeft,'top':top-gTop};
}
};
/*
** enableFrameClicking()
** Add an onclick event handler to each frame
** Exception: if a frame has an anchor tag, do not add an onlick handler
*/
function enableFrameClicking() {
j_frames.each(function(i){
if($('a',this).length==0) {
$(this).click(function(){
// Prevent transitioning to the current frame (unnecessary)
if(iterator!=i) {
$(document).stopTime("transition");
showItem(i);
iterator = i;
if(!paused) {
$(document).everyTime(opts.transition_interval,"transition",function(){
showNextItem();
});
}
}
});
}
});
};
/*
** buildPanels()
** Construct gallery panels from <div class="panel"> elements
** NOTE - These DIVs are generated automatically from the content of the UL passed to the plugin
*/
function buildPanels() {
// If panel overlay content exists, add the necessary overlay background DIV
// The overlay content and background are separate elements so the background's opacity isn't inherited by the content
j_panels.each(function(i){
if($('.panel-overlay',this).length>0) {
$(this).append('<div class="overlay-background"></div>');
}
});
// If there is no filmstrip in this gallery, add navigation buttons to the panel itself
if(!opts.show_filmstrip) {
$('<img />').addClass('nav-next').attr('src',theme_path+opts.nav_theme+'/next.png').appendTo(j_gallery).css({
'position':'absolute',
'zIndex':'1100',
'cursor':'pointer',
'top':((opts.panel_height-22)/2)+gallery_padding+'px',
'right':'10px',
'display':'none'
}).click(showNextItem);
$('<img />').addClass('nav-prev').attr('src',theme_path+opts.nav_theme+'/prev.png').appendTo(j_gallery).css({
'position':'absolute',
'zIndex':'1100',
'cursor':'pointer',
'top':((opts.panel_height-22)/2)+gallery_padding+'px',
'left':'10px',
'display':'none'
}).click(showPrevItem);
$('<img />').addClass('nav-next-overlay').attr('src',theme_path+opts.nav_theme+'/panel-nav-next.png').appendTo(j_gallery).css({
'position':'absolute',
'zIndex':'1099',
'top':((opts.panel_height-22)/2)+gallery_padding-10+'px',
'right':'0',
'display':'none',
'cursor':'pointer',
'opacity':0.75
}).click(showNextItem);
$('<img />').addClass('nav-prev-overlay').attr('src',theme_path+opts.nav_theme+'/panel-nav-prev.png').appendTo(j_gallery).css({
'position':'absolute',
'zIndex':'1099',
'top':((opts.panel_height-22)/2)+gallery_padding-10+'px',
'left':'0',
'display':'none',
'cursor':'pointer',
'opacity':0.75
}).click(showPrevItem);
}
// Set the height and width of each panel, and position it appropriately within the gallery
j_panels.each(function(i){
$(this).css({
'width':(opts.panel_width-extraWidth(j_panels))+'px',
'height':(opts.panel_height-extraHeight(j_panels))+'px',
'position':'absolute',
'overflow':'hidden',
'display':'none'
});
switch(opts.filmstrip_position) {
case 'top': $(this).css({
'top':strip_height+Math.max(gallery_padding,filmstrip_margin)+'px',
'left':gallery_padding+'px'
}); break;
case 'left': $(this).css({
'top':gallery_padding+'px',
'left':strip_width+Math.max(gallery_padding,filmstrip_margin)+'px'
}); break;
default: $(this).css({'top':gallery_padding+'px','left':gallery_padding+'px'}); break;
}
});
// Position each panel overlay within panel
$('.panel-overlay',j_panels).css({
'position':'absolute',
'zIndex':'999',
'width':(opts.panel_width-extraWidth($('.panel-overlay',j_panels)))+'px',
'left':'0'
});
$('.overlay-background',j_panels).css({
'position':'absolute',
'zIndex':'998',
'width':opts.panel_width+'px',
'left':'0',
'opacity':opts.overlay_opacity
});
if(opts.overlay_position=='top') {
$('.panel-overlay',j_panels).css('top',0);
$('.overlay-background',j_panels).css('top',0);
} else {
$('.panel-overlay',j_panels).css('bottom',0);
$('.overlay-background',j_panels).css('bottom',0);
}
$('.panel iframe',j_panels).css({
'width':opts.panel_width+'px',
'height':opts.panel_height+'px',
'border':'0'
});
// If panel images have to be scaled to fit within frame, do so and position them accordingly
if(scale_panel_images) {
$('img',j_panels).each(function(i){
$(this).css({
'height':panel_img_scale[i%item_count]*img_h[i%item_count],
'width':panel_img_scale[i%item_count]*img_w[i%item_count],
'position':'relative',
'top':(opts.panel_height-(panel_img_scale[i%item_count]*img_h[i%item_count]))/2+'px',
'left':(opts.panel_width-(panel_img_scale[i%item_count]*img_w[i%item_count]))/2+'px'
});
});
}
};
/*
** buildFilmstrip()
** Construct filmstrip from <ul class="filmstrip"> element
** NOTE - 'filmstrip' class is automatically added to UL passed to plugin
*/
function buildFilmstrip() {
// Add wrapper to filmstrip to hide extra frames
j_filmstrip.wrap('<div class="strip_wrapper"></div>');
if(slide_method=='strip') {
j_frames.clone().appendTo(j_filmstrip);
j_frames.clone().appendTo(j_filmstrip);
j_frames = $('li',j_filmstrip);
}
// If captions are enabled, add caption DIV to each frame and fill with the image titles
if(opts.show_captions) {
j_frames.append('<div class="caption"></div>').each(function(i){
$(this).find('.caption').html($(this).find('img').attr('title'));
//$(this).find('.caption').html(i);
});
}
// Position the filmstrip within the gallery
j_filmstrip.css({
'listStyle':'none',
'margin':'0',
'padding':'0',
'width':strip_width+'px',
'position':'absolute',
'zIndex':'900',
'top':(filmstrip_orientation=='vertical' && slide_method=='strip'?-((f_frame_height+opts.frame_gap)*iterator):0)+'px',
'left':(filmstrip_orientation=='horizontal' && slide_method=='strip'?-((f_frame_width+opts.frame_gap)*iterator):0)+'px',
'height':strip_height+'px'
});
j_frames.css({
'float':'left',
'position':'relative',
'height':f_frame_height+(opts.show_captions?frame_caption_size:0)+'px',
'width':f_frame_width+'px',
'zIndex':'901',
'padding':'0',
'cursor':'pointer'
});
// Set frame margins based on user options and position of filmstrip within gallery
switch(opts.filmstrip_position) {
case 'top': j_frames.css({
'marginBottom':filmstrip_margin+'px',
'marginRight':opts.frame_gap+'px'
}); break;
case 'bottom': j_frames.css({
'marginTop':filmstrip_margin+'px',
'marginRight':opts.frame_gap+'px'
}); break;
case 'left': j_frames.css({
'marginRight':filmstrip_margin+'px',
'marginBottom':opts.frame_gap+'px'
}); break;
case 'right': j_frames.css({
'marginLeft':filmstrip_margin+'px',
'marginBottom':opts.frame_gap+'px'
}); break;
}
// Apply styling to individual image wrappers. These will eventually hide overflow in the case of cropped filmstrip images
$('.img_wrap',j_frames).each(function(i){
$(this).css({
'height':Math.min(opts.frame_height,img_h[i%item_count]*frame_img_scale[i%item_count])+'px',
'width':Math.min(opts.frame_width,img_w[i%item_count]*frame_img_scale[i%item_count])+'px',
'position':'relative',
'top':(opts.show_captions && opts.filmstrip_position=='top'?frame_caption_size:0)+Math.max(0,(opts.frame_height-(frame_img_scale[i%item_count]*img_h[i%item_count]))/2)+'px',
'left':Math.max(0,(opts.frame_width-(frame_img_scale[i%item_count]*img_w[i%item_count]))/2)+'px',
'overflow':'hidden'
});
});
// Scale each filmstrip image if necessary and position it within the image wrapper
$('img',j_frames).each(function(i){
$(this).css({
'opacity':opts.frame_opacity,
'height':img_h[i%item_count]*frame_img_scale[i%item_count]+'px',
'width':img_w[i%item_count]*frame_img_scale[i%item_count]+'px',
'position':'relative',
'top':Math.min(0,(opts.frame_height-(frame_img_scale[i%item_count]*img_h[i%item_count]))/2)+'px',
'left':Math.min(0,(opts.frame_width-(frame_img_scale[i%item_count]*img_w[i%item_count]))/2)+'px'
}).mouseover(function(){
$(this).stop().animate({'opacity':1.0},300);
}).mouseout(function(){
//Don't fade out current frame on mouseout
if(!$(this).parent().parent().hasClass('current')) { $(this).stop().animate({'opacity':opts.frame_opacity},300); }
});
});
// Set overflow of filmstrip wrapper to hidden so as to hide frames that don't fit within the gallery
$('.strip_wrapper',j_gallery).css({
'position':'absolute',
'overflow':'hidden'
});
// Position filmstrip within gallery based on user options
if(filmstrip_orientation=='horizontal') {
$('.strip_wrapper',j_gallery).css({
'top':(opts.filmstrip_position=='top'?Math.max(gallery_padding,filmstrip_margin)+'px':opts.panel_height+gallery_padding+'px'),
'left':((gallery_width-wrapper_width)/2)+gallery_padding+'px',
'width':wrapper_width+'px',
'height':strip_height+'px'
});
} else {
$('.strip_wrapper',j_gallery).css({
'left':(opts.filmstrip_position=='left'?Math.max(gallery_padding,filmstrip_margin)+'px':opts.panel_width+gallery_padding+'px'),
'top':Math.max(gallery_padding,opts.frame_gap)+'px',
'width':strip_width+'px',
'height':wrapper_height+'px'
});
}
// Style frame captions
$('.caption',j_gallery).css({
'position':'absolute',
'top':(opts.filmstrip_position=='bottom'?f_frame_height:0)+'px',
'left':'0',
'margin':'0',
'width':f_frame_width+'px',
'padding':'0',
'height':frame_caption_size+'px',
'overflow':'hidden',
'lineHeight':frame_caption_size+'px'
});
// Create pointer for current frame
var pointer = $('<div></div>');
pointer.addClass('pointer').appendTo(j_gallery).css({
'position':'absolute',
'zIndex':'1000',
'width':'0px',
'fontSize':'0px',
'lineHeight':'0%',
'borderTopWidth':pointer_height+'px',
'borderRightWidth':(pointer_width/2)+'px',
'borderBottomWidth':pointer_height+'px',
'borderLeftWidth':(pointer_width/2)+'px',
'borderStyle':'solid'
});
// For IE6, use predefined color string in place of transparent (IE6 bug fix, see stylesheet)
var transColor = $.browser.msie && $.browser.version.substr(0,1)=='6' ? 'pink' : 'transparent';
// If there are no panels, make pointer transparent (nothing to point to)
// This is not the optimal solution, but we need the pointer to exist as a reference for transition animations
if(!opts.show_panels) { pointer.css('borderColor',transColor); }
switch(opts.filmstrip_position) {
case 'top': pointer.css({
'bottom':(opts.panel_height-(pointer_height*2)+gallery_padding+filmstrip_margin)+'px',
'left':((gallery_width-wrapper_width)/2)+(slide_method=='strip'?0:((f_frame_width+opts.frame_gap)*iterator))+((f_frame_width/2)-(pointer_width/2))+gallery_padding+'px',
'borderBottomColor':transColor,
'borderRightColor':transColor,
'borderLeftColor':transColor
}); break;
case 'bottom': pointer.css({
'top':(opts.panel_height-(pointer_height*2)+gallery_padding+filmstrip_margin)+'px',
'left':((gallery_width-wrapper_width)/2)+(slide_method=='strip'?0:((f_frame_width+opts.frame_gap)*iterator))+((f_frame_width/2)-(pointer_width/2))+gallery_padding+'px',
'borderTopColor':transColor,
'borderRightColor':transColor,
'borderLeftColor':transColor
}); break;
case 'left': pointer.css({
'right':(opts.panel_width-pointer_width+gallery_padding+filmstrip_margin)+'px',
'top':(f_frame_height/2)-(pointer_height)+(slide_method=='strip'?0:((f_frame_height+opts.frame_gap)*iterator))+gallery_padding+'px',
'borderBottomColor':transColor,
'borderRightColor':transColor,
'borderTopColor':transColor
}); break;
case 'right': pointer.css({
'left':(opts.panel_width-pointer_width+gallery_padding+filmstrip_margin)+'px',
'top':(f_frame_height/2)-(pointer_height)+(slide_method=='strip'?0:((f_frame_height+opts.frame_gap)*iterator))+gallery_padding+'px',
'borderBottomColor':transColor,
'borderLeftColor':transColor,
'borderTopColor':transColor
}); break;
}
j_pointer = $('.pointer',j_gallery);
// Add navigation buttons
var navNext = $('<img />');
navNext.addClass('nav-next').attr('src',theme_path+opts.nav_theme+'/next.png').appendTo(j_gallery).css({
'position':'absolute',
'cursor':'pointer'
}).click(showNextItem);
var navPrev = $('<img />');
navPrev.addClass('nav-prev').attr('src',theme_path+opts.nav_theme+'/prev.png').appendTo(j_gallery).css({
'position':'absolute',
'cursor':'pointer'
}).click(showPrevItem);
if(filmstrip_orientation=='horizontal') {
navNext.css({
'top':(opts.filmstrip_position=='top'?Math.max(gallery_padding,filmstrip_margin):opts.panel_height+filmstrip_margin+gallery_padding)+((f_frame_height-22)/2)+'px',
'right':((gallery_width+(gallery_padding*2))/2)-(wrapper_width/2)-opts.frame_gap-22+'px'
});
navPrev.css({
'top':(opts.filmstrip_position=='top'?Math.max(gallery_padding,filmstrip_margin):opts.panel_height+filmstrip_margin+gallery_padding)+((f_frame_height-22)/2)+'px',
'left':((gallery_width+(gallery_padding*2))/2)-(wrapper_width/2)-opts.frame_gap-22+'px'
});
} else {
navNext.css({
'left':(opts.filmstrip_position=='left'?Math.max(gallery_padding,filmstrip_margin):opts.panel_width+filmstrip_margin+gallery_padding)+((f_frame_width-22)/2)+13+'px',
'top':wrapper_height+(Math.max(gallery_padding,opts.frame_gap)*2)+'px'
});
navPrev.css({
'left':(opts.filmstrip_position=='left'?Math.max(gallery_padding,filmstrip_margin):opts.panel_width+filmstrip_margin+gallery_padding)+((f_frame_width-22)/2)-13+'px',
'top':wrapper_height+(Math.max(gallery_padding,opts.frame_gap)*2)+'px'
});
}
};
/*
** mouseIsOverGallery(int,int)
** Check to see if mouse coordinates lie within borders of gallery
** This is a more reliable method than using the mouseover event
** RETURN - boolean
*/
function mouseIsOverGallery(x,y) {
var pos = getPos(j_gallery[0]);
var top = pos.top;
var left = pos.left;
return x > left && x < left+gallery_width+(filmstrip_orientation=='horizontal'?(gallery_padding*2):gallery_padding+Math.max(gallery_padding,filmstrip_margin)) && y > top && y < top+gallery_height+(filmstrip_orientation=='vertical'?(gallery_padding*2):gallery_padding+Math.max(gallery_padding,filmstrip_margin));
};
/*
** getInt(string)
** Parse a string to obtain the integer value contained
** If the string contains no number, return zero
** RETURN - int
*/
function getInt(i) {
i = parseInt(i,10);
if(isNaN(i)) { i = 0; }
return i;
};
/*
** buildGallery()
** Construct HTML and CSS for the gallery, based on user options
*/
function buildGallery() {
var gallery_images = opts.show_filmstrip?$('img',j_frames):$('img',j_panels);
// For each image in the gallery, add its original dimensions and scaled dimensions to the appropriate arrays for later reference
gallery_images.each(function(i){
img_h[i] = this.height;
img_w[i] = this.width;
if(opts.frame_scale=='nocrop') {
frame_img_scale[i] = Math.min(opts.frame_height/img_h[i],opts.frame_width/img_w[i]);
} else {
frame_img_scale[i] = Math.max(opts.frame_height/img_h[i],opts.frame_width/img_w[i]);
}
if(opts.panel_scale=='nocrop') {
panel_img_scale[i] = Math.min(opts.panel_height/img_h[i],opts.panel_width/img_w[i]);
} else {
panel_img_scale[i] = Math.max(opts.panel_height/img_h[i],opts.panel_width/img_w[i]);
}
});
// Size gallery based on position of filmstrip
j_gallery.css({
'position':'relative',
'width':gallery_width+(filmstrip_orientation=='horizontal'?(gallery_padding*2):gallery_padding+Math.max(gallery_padding,filmstrip_margin))+'px',
'height':gallery_height+(filmstrip_orientation=='vertical'?(gallery_padding*2):gallery_padding+Math.max(gallery_padding,filmstrip_margin))+'px'
});
// Build filmstrip if necessary
if(opts.show_filmstrip) {
buildFilmstrip();
enableFrameClicking();
}
// Build panels if necessary
if(opts.show_panels) {
buildPanels();
}
// If user opts to pause on hover, or no filmstrip exists, add some mouseover functionality
if(opts.pause_on_hover || (opts.show_panels && !opts.show_filmstrip)) {
$(document).mousemove(function(e){
if(mouseIsOverGallery(e.pageX,e.pageY)) {
// If the user opts to pause on hover, kill automated transitions
if(opts.pause_on_hover) {
if(!paused) {
// Pause slideshow in 500ms
$(document).oneTime(500,"animation_pause",function(){
$(document).stopTime("transition");
paused=true;
});
}
}
// Display panel navigation on mouseover
if(opts.show_panels && !opts.show_filmstrip && !panel_nav_displayed) {
$('.nav-next-overlay').fadeIn('fast');
$('.nav-prev-overlay').fadeIn('fast');
$('.nav-next',j_gallery).fadeIn('fast');
$('.nav-prev',j_gallery).fadeIn('fast');
panel_nav_displayed = true;
}
} else {
// If the mouse leaves the gallery, stop the pause timer and restart automated transitions
if(opts.pause_on_hover) {
$(document).stopTime("animation_pause");
if(paused) {
$(document).everyTime(opts.transition_interval,"transition",function(){
showNextItem();
});
paused = false;
}
}
// Hide panel navigation
if(opts.show_panels && !opts.show_filmstrip && panel_nav_displayed) {
$('.nav-next-overlay').fadeOut('fast');
$('.nav-prev-overlay').fadeOut('fast');
$('.nav-next',j_gallery).fadeOut('fast');
$('.nav-prev',j_gallery).fadeOut('fast');
panel_nav_displayed = false;
}
}
});
}
// Hide loading box and display gallery
j_filmstrip.css('visibility','visible');
j_gallery.css('visibility','visible');
$('.loader',j_gallery).fadeOut('1000',function(){
// Show the 'first' panel (set by opts.start_frame)
showItem(iterator);
// If we have more than one item, begin automated transitions
if(item_count > 1) {
$(document).everyTime(opts.transition_interval,"transition",function(){
showNextItem();
});
}
});
};
/*
** MAIN PLUGIN CODE
*/
return this.each(function() {
//Hide the unstyled UL until we've created the gallery
$(this).css('visibility','hidden');
// Wrap UL in DIV and transfer ID to container DIV
$(this).wrap("<div></div>");
j_gallery = $(this).parent();
j_gallery.css('visibility','hidden').attr('id',$(this).attr('id')).addClass('gallery');
// Assign filmstrip class to UL
$(this).removeAttr('id').addClass('filmstrip');
// If the transition or pause timers exist for any reason, stop them now.
$(document).stopTime("transition");
$(document).stopTime("animation_pause");
// Save the id of the UL passed to the plugin
id = j_gallery.attr('id');
// If the UL does not contain any <div class="panel-content"> elements, we will scale the UL images to fill the panels
scale_panel_images = $('.panel-content',j_gallery).length==0;
// Define dimensions of pointer <div>
pointer_height = opts.pointer_size;
pointer_width = opts.pointer_size*2;
// Determine filmstrip orientation (vertical or horizontal)
// Do not show captions on vertical filmstrips (override user set option)
filmstrip_orientation = (opts.filmstrip_position=='top'||opts.filmstrip_position=='bottom'?'horizontal':'vertical');
if(filmstrip_orientation=='vertical') { opts.show_captions = false; }
// Determine path between current page and plugin images
// Scan script tags and look for path to GalleryView plugin
$('script').each(function(i){
var s = $(this);
if(s.attr('src') && s.attr('src').match(/jquery\.galleryview/)){
loader_path = s.attr('src').split('jquery.galleryview')[0];
theme_path = s.attr('src').split('jquery.galleryview')[0]+'themes/';
}
});
// Assign elements to variables to minimize calls to jQuery
j_filmstrip = $('.filmstrip',j_gallery);
j_frames = $('li',j_filmstrip);
j_frames.addClass('frame');
// If the user wants panels, generate them using the filmstrip images
if(opts.show_panels) {
for(i=j_frames.length-1;i>=0;i--) {
if(j_frames.eq(i).find('.panel-content').length>0) {
j_frames.eq(i).find('.panel-content').remove().prependTo(j_gallery).addClass('panel');
} else {
p = $('<div>');
p.addClass('panel');
im = $('<img />');
im.attr('src',j_frames.eq(i).find('img').eq(0).attr('src')).appendTo(p);
p.prependTo(j_gallery);
j_frames.eq(i).find('.panel-overlay').remove().appendTo(p);
}
}
} else {
$('.panel-overlay',j_frames).remove();
$('.panel-content',j_frames).remove();
}
// If the user doesn't want a filmstrip, delete it
if(!opts.show_filmstrip) { j_filmstrip.remove(); }
else {
// Wrap the frame images (and links, if applicable) in container divs
// These divs will handle cropping and zooming of the images
j_frames.each(function(i){
if($(this).find('a').length>0) {
$(this).find('a').wrap('<div class="img_wrap"></div>');
} else {
$(this).find('img').wrap('<div class="img_wrap"></div>');
}
});
j_frame_img_wrappers = $('.img_wrap',j_frames);
}
j_panels = $('.panel',j_gallery);
if(!opts.show_panels) {
opts.panel_height = 0;
opts.panel_width = 0;
}
// Determine final frame dimensions, accounting for user-added padding and border
f_frame_width = opts.frame_width+extraWidth(j_frame_img_wrappers);
f_frame_height = opts.frame_height+extraHeight(j_frame_img_wrappers);
// Number of frames in filmstrip
item_count = opts.show_panels?j_panels.length:j_frames.length;
// Number of frames that can display within the gallery block
// 64 = width of block for navigation button * 2 + 20
if(filmstrip_orientation=='horizontal') {
strip_size = opts.show_panels?Math.floor((opts.panel_width-((opts.frame_gap+22)*2))/(f_frame_width+opts.frame_gap)):Math.min(item_count,opts.filmstrip_size);
} else {
strip_size = opts.show_panels?Math.floor((opts.panel_height-(opts.frame_gap+22))/(f_frame_height+opts.frame_gap)):Math.min(item_count,opts.filmstrip_size);
}
// Determine animation method for filmstrip
// If more items than strip size, slide filmstrip
// Otherwise, slide pointer
if(strip_size >= item_count) {
slide_method = 'pointer';
strip_size = item_count;
}
else {slide_method = 'strip';}
iterator = (strip_size<item_count?item_count:0)+opts.start_frame-1;
// Determine dimensions of various gallery elements
filmstrip_margin = (opts.show_panels?getInt(j_filmstrip.css('marginTop')):0);
j_filmstrip.css('margin','0px');
if(filmstrip_orientation=='horizontal') {
// Width of gallery block
gallery_width = opts.show_panels?opts.panel_width:(strip_size*(f_frame_width+opts.frame_gap))+44+opts.frame_gap;
// Height of gallery block = screen + filmstrip + captions (optional)
gallery_height = (opts.show_panels?opts.panel_height:0)+(opts.show_filmstrip?f_frame_height+filmstrip_margin+(opts.show_captions?frame_caption_size:0):0);
} else {
// Width of gallery block
gallery_height = opts.show_panels?opts.panel_height:(strip_size*(f_frame_height+opts.frame_gap))+22;
// Height of gallery block = screen + filmstrip + captions (optional)
gallery_width = (opts.show_panels?opts.panel_width:0)+(opts.show_filmstrip?f_frame_width+filmstrip_margin:0);
}
// Width of filmstrip
if(filmstrip_orientation=='horizontal') {
if(slide_method == 'pointer') {strip_width = (f_frame_width*item_count)+(opts.frame_gap*(item_count));}
else {strip_width = (f_frame_width*item_count*3)+(opts.frame_gap*(item_count*3));}
} else {
strip_width = (f_frame_width+filmstrip_margin);
}
if(filmstrip_orientation=='horizontal') {
strip_height = (f_frame_height+filmstrip_margin+(opts.show_captions?frame_caption_size:0));
} else {
if(slide_method == 'pointer') {strip_height = (f_frame_height*item_count+opts.frame_gap*(item_count));}
else {strip_height = (f_frame_height*item_count*3)+(opts.frame_gap*(item_count*3));}
}
// Width of filmstrip wrapper (to hide overflow)
wrapper_width = ((strip_size*f_frame_width)+((strip_size-1)*opts.frame_gap));
wrapper_height = ((strip_size*f_frame_height)+((strip_size-1)*opts.frame_gap));
gallery_padding = getInt(j_gallery.css('paddingTop'));
j_gallery.css('padding','0px');
// Place loading box over gallery until page loads
galleryPos = getPos(j_gallery[0]);
$('<div>').addClass('loader').css({
'position':'absolute',
'zIndex':'32666',
'opacity':1,
'top':'0px',
'left':'0px',
'width':gallery_width+(filmstrip_orientation=='horizontal'?(gallery_padding*2):gallery_padding+Math.max(gallery_padding,filmstrip_margin))+'px',
'height':gallery_height+(filmstrip_orientation=='vertical'?(gallery_padding*2):gallery_padding+Math.max(gallery_padding,filmstrip_margin))+'px'
}).appendTo(j_gallery);
// Don't call the buildGallery function until the window is loaded
// NOTE - lazy way of waiting until all images are loaded, may find a better solution for future versions
if(!window_loaded) {
$(window).load(function(){
window_loaded = true;
buildGallery();
});
} else {
buildGallery();
}
});
};
/*
** GalleryView options and default values
*/
$.fn.galleryView.defaults = {
show_panels: true, //BOOLEAN - flag to show or hide panel portion of gallery
show_filmstrip: true, //BOOLEAN - flag to show or hide filmstrip portion of gallery
panel_width: 600, //INT - width of gallery panel (in pixels)
panel_height: 400, //INT - height of gallery panel (in pixels)
frame_width: 60, //INT - width of filmstrip frames (in pixels)
frame_height: 40, //INT - width of filmstrip frames (in pixels)
start_frame: 1, //INT - index of panel/frame to show first when gallery loads
filmstrip_size: 3,
transition_speed: 800, //INT - duration of panel/frame transition (in milliseconds)
transition_interval: 4000, //INT - delay between panel/frame transitions (in milliseconds)
overlay_opacity: 0.7, //FLOAT - transparency for panel overlay (1.0 = opaque, 0.0 = transparent)
frame_opacity: 0.3, //FLOAT - transparency of non-active frames (1.0 = opaque, 0.0 = transparent)
pointer_size: 8, //INT - Height of frame pointer (in pixels)
nav_theme: 'dark', //STRING - name of navigation theme to use (folder must exist within 'themes' directory)
easing: 'swing', //STRING - easing method to use for animations (jQuery provides 'swing' or 'linear', more available with jQuery UI or Easing plugin)
filmstrip_position: 'bottom', //STRING - position of filmstrip within gallery (bottom, top, left, right)
overlay_position: 'bottom', //STRING - position of panel overlay (bottom, top, left, right)
panel_scale: 'nocrop', //STRING - cropping option for panel images (crop = scale image and fit to aspect ratio determined by panel_width and panel_height, nocrop = scale image and preserve original aspect ratio)
frame_scale: 'crop', //STRING - cropping option for filmstrip images (same as above)
frame_gap: 5, //INT - spacing between frames within filmstrip (in pixels)
show_captions: false, //BOOLEAN - flag to show or hide frame captions
fade_panels: true, //BOOLEAN - flag to fade panels during transitions or swap instantly
pause_on_hover: false //BOOLEAN - flag to pause slideshow when user hovers over the gallery
};
})(jQuery);