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|
/* 06/25/2010
PikaChoose
Jquery plugin for photo galleries
Copyright (C) 2010 Jeremy Fry
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
(function (jQuery) {
jQuery.fn.PikaChoose = function (user_options) {
var defaults = {
show_captions: true,
auto_play: false,
show_prev_next: true,
slide_speed: 5000,
thumb_width: 90,
thumb_height: 60,
buttons_text: { play: "", stop: "", previous: "", next: "" },
delay_caption: true,
user_thumbs: false,
transition:[-1],
IESafe: false
};
return jQuery(this).each(
function()
{
function CreateThumbnail()
{
var image = jQuery(this);
var aParent = jQuery(this).parent('a');
if(aParent.length == 0){ aParent = jQuery(this); }
aParent.hide();
jQuery(this).attr('pikaLink', aParent.attr('href'));
//pull it out of the a tag
image = jQuery(this).clone(true).insertAfter(aParent);
jQuery(this).removeClass('pika_first');
//wait for load to remove previous or ie will never see the page loaded
jQuery(this).bind("load",function(){ aParent.remove(); });
jQuery('<img />').load(function()
{
var w = image.width();
var h = image.height();
if(w===0){w = image.attr("width");}
if(h===0){h = image.attr("height");}
//grab a ratio for image to user defined settings
var rw = options.thumb_width/w;
var rh = options.thumb_height/h;
//determine which has the smallest ratio (thus needing
//to be the side we use to scale so our whole thumb is filled)
var ratio;
if(rw<rh){
//we'll use ratio later to scale and not distort
ratio = rh;
var left = ((w*ratio-options.thumb_width)/2)*-1;
left = Math.round(left);
//set images left offset to match
image.css({left:left});
}else{
ratio = rw;
var top = 0;
image.css({top:top});
}
//use those ratios to calculate scale
var width = Math.round(w*ratio);
var height = Math.round(h*ratio);
image.css("position","relative");
image.width(width).height(height);
var imgcss={
width: width,
height: height
};
image.css(imgcss);
image.hover(
function(){jQuery(this).fadeTo(250,1);},
function(){if(!jQuery(this).hasClass("pika_selected")){jQuery(this).fadeTo(250,0.4);}}
);
if(ulist.children('li').find('img:last').index(image)==0){
image.fadeTo(250,1);
}else{
image.fadeTo(250,0.4);
}
jQuery(this).show();
}).attr('src',image.attr('src'));
//reset images to the clones
images = ulist.children('li').find('img:last');
}
//bring in options
var tranStep = 0;
var options = jQuery.extend(defaults, user_options);
var images = jQuery(this).children('li').find('img');
images.hide();
//save our list for future ref
var ulist = jQuery(this);
ulist.children("li:last").children("img").addClass("pika_last");
images.each(CreateThumbnail);
//start building structure
jQuery(this).before("<div class='pika_main'></div>");
// houses eveything about the UL
var main_div = jQuery(this).prev(".pika_main");
//add in slideshow elements when appropriate
main_div.append("<div class='pika_play'></div>");
var play_div = jQuery(this).prev(".pika_main").children(".pika_play");
play_div.html("<a class='pika_play_button'>" + options.buttons_text.play + "</a><a class='pika_stop_button'>" + options.buttons_text.stop + "</a>");
play_div.fadeOut(1);
var play_anchor = play_div.children('a:first');
var stop_anchor = play_div.children('a:last');
//this div is used to make image and caption fade together
main_div.append("<div class='pika_subdiv'></div>");
var sub_div = main_div.children(".pika_subdiv");
//the main image we'll be using to load
var firstImage = ulist.find("img:first");
if(options.user_thumbs)
{
firstImage = firstImage.attr('ref');
}else
{
firstImage = firstImage.attr('src');
}
sub_div.append("<img class='pika_main_img' src='"+firstImage+"' />");
sub_div.append("<div class='pika_animationDivs'>");
var ani_divs = sub_div.find(".pika_animationDivs");
ani_divs.css({'position':'absolute','width':'100%','height':'100%'});
var y = 0;
var x = 0;
for(var t = 0; t<25;t++)
{
var a = '<div col="'+y+'" row="'+x+'"></div>';
ani_divs.append(a);
y++
if(y == 5)
{
x++;
y=0;
}
}
ani_divs.children(':last').addClass("pikaLastAni");
var main_img = sub_div.children("img");
//build custom overlays. These will use navigation div
sub_div.append("<div class='pika_prev_hover'></div><div class='pika_next_hover'></div>");
var prevHover = sub_div.find('.pika_prev_hover');
var nextHover = sub_div.find('.pika_next_hover');
prevHover.hide();
nextHover.hide();
//create the caption div when appropriate
if(options.show_captions){
main_div.append("<div class='pika_caption'></div>");
var caption_div = main_div.children(".pika_caption");
}
//navigation div ALWAYS gets created, its refrenced a lot
ulist.after("<div class='pika_navigation'></div>");
var navigation_div = jQuery(this).next(".pika_navigation");
//fill in sub elements
navigation_div.append("<a>" + options.buttons_text.previous + "</a> :: <a>" + options.buttons_text.next + "</a>");
var previous_image_anchor = navigation_div.children('a:first');
var next_image_anchor = navigation_div.children('a:last');
//hide the navigation if the user doesn't want it
if(!options.show_prev_next){
navigation_div.css("display","none");
}
//playing triggers the loop for the slideshow
var playing = options.auto_play;
var animating = false;
main_img.wrap("<a></a>");
var main_link = main_img.parent("a");
function activate()
{
//sets the intial phase for everything
//image_click is controls the fading
images.bind("click",image_click);
//hiding refrence to slide elements if slide is disabled
if(options.auto_play){
playing = true;
play_anchor.hide();
stop_anchor.show();
}else{
play_anchor.show();
stop_anchor.hide();
}
ulist.children("li:last").children("img").addClass("pika_last");
ulist.children("li:first").children("img").addClass("pika_first");
ulist.children("li").each(function(){ jQuery(this).children("span").hide(); });
//css for the list
var divcss = {
width: options.thumb_width+"px",
height: options.thumb_height+"px",
"list-style": "none",
overflow: "hidden"
};
var licss = {
"list-style": "none",
overflow: "hidden"
};
images.each(function(){
jQuery(this).parent('li').css(licss);
jQuery(this).wrap(document.createElement("div"));
jQuery(this).parent('div').css(divcss);
});
//previous link to go back an image
previous_image_anchor.bind("click",previous_image);
prevHover.bind("click",previous_image);
//ditto for forward, also the item that gets auto clicked for slideshow
next_image_anchor.bind("click",next_image);
nextHover.bind("click",next_image);
//enable mouse tracking for the hover
sub_div.mousemove(function(e){
var w = sub_div.width();
var x = e.pageX - sub_div.offset().left;
if(x<w*0.3)
{
prevHover.fadeIn('fast');
}else{
prevHover.fadeOut('fast');
}
if(x>w*0.7)
{
nextHover.fadeIn('fast');
}else{
nextHover.fadeOut('fast');
}
});
sub_div.mouseleave(function(){ prevHover.fadeOut('fast');nextHover.fadeOut('fast'); });
}//end activate function
function Gapper(ele, aHeight)
{
if(ele.attr('row') == 9 && ele.attr('col') == 0)
{
//last row, check the gap and fix it!
var gap = ani_divs.height()-(aHeight*9);
return gap;
}
return aHeight;
}
function AnimateImage(image_source, image_link,how)
{
//main_img.hide();
jQuery('<img />').load(function()
{
ani_divs.height(main_img.height()).show();
ani_divs.children('div').css({'width':'20%','height':'20%','float':'left'});
var aWidth = ani_divs.children('div:first').width();
var aHeight = ani_divs.children('div:first').height();
if(how!="autoFirst"){
ani_divs.children().each(function()
{
//position myself absolutely
var div = jQuery(this);
var xOffset = Math.floor(div.parent().width()/5)*div.attr('col');
var yOffset = Math.floor(div.parent().height()/5)*div.attr('row');
div.css({
'background':'url('+image_source+') -'+xOffset+'px -'+yOffset+'px',
'width':'0px',
'height':'0px',
'position':'absolute',
'top':yOffset+'px',
'left':xOffset+'px',
'float':'none'
});
});//end ani_divs.children.each
}
//decide our transition
var n = 0;
if(options.transition[0] == -1)
{ //random
n = Math.floor(Math.random()*6);
}else{
n = options.transition[tranStep];
tranStep++;
if(tranStep >= options.transition.length){tranStep=0;}
}
if(options.IESafe == true)
{
if(jQuery.browser.msie)
{
n = 0;
}
}
switch(n)
{
case 0:
//full frame fade
ani_divs.height(main_img.height()).hide().css({'background':'url('+image_source+') top left no-repeat'});
ani_divs.children('div').hide();
ani_divs.fadeIn('slow',function(){
FinishedAnimating(image_source,image_link);
ani_divs.css({'background':'transparent'});
});
break;
case 1:
ani_divs.children().hide().each(function(index)
{
//animate out as blocks
var delay = index*10;
jQuery(this).delay(delay).animate({"width":aWidth,"height":aHeight},800,'linear',function()
{
if(jQuery(this).hasClass('pikaLastAni'))
{
FinishedAnimating(image_source,image_link);
}
});
});
break;
case 2:
ani_divs.children().hide().each(function(index)
{
var delay = jQuery(this).attr('row')*10;
jQuery(this).css({"width":aWidth}).delay(delay).animate({"height":aHeight},800,'linear',function()
{
if(jQuery(this).hasClass('pikaLastAni'))
{
FinishedAnimating(image_source,image_link);
}
});
});
break;
case 3:
ani_divs.children().hide().each(function(index)
{
var delay = jQuery(this).attr('col')*10;
aHeight = Gapper(jQuery(this), aHeight);
jQuery(this).css({"height":aHeight}).delay(delay).animate({"width":aWidth},800,'linear',function()
{
if(jQuery(this).hasClass('pikaLastAni'))
{
FinishedAnimating(image_source,image_link);
}
});
});
break;
case 4:
ani_divs.children().show().each(function(index)
{
var delay = index*Math.floor(Math.random()*5)*10;
aHeight = Gapper(jQuery(this), aHeight);
if(jQuery(this).hasClass('pikaLastAni'))
{
delay = 800;
}
jQuery(this).css({"height":aHeight,"width":aWidth,"opacity":.01}).delay(delay).animate({"opacity":1},800,function()
{
if(jQuery(this).hasClass('pikaLastAni'))
{
FinishedAnimating(image_source,image_link);
}
});
});
break;
case 5:
//full frame slide
ani_divs.height(main_img.height()).hide().css({'background':'url('+image_source+') top left no-repeat'});
ani_divs.children('div').hide();
ani_divs.css({width:0}).animate({width:main_img.width()},'slow',function(){
FinishedAnimating(image_source,image_link);
ani_divs.css({'background':'transparent'});
});
break;
case 6:
//fade out then in
ani_divs.hide();
main_img.fadeOut('slow',function(){
main_img.attr('src',image_source).fadeIn('slow',function()
{
FinishedAnimating(image_source,image_link);
});
});
break;
}
}).attr('src',image_source);//end image preload
}// end animate images
function FinishedAnimating(image_source,image_link)
{
animating = false;
main_img.attr("src", image_source);
if(image_link == null){image_link = "#"}
main_link.attr("href", image_link);
ani_divs.children().css({"background":"transparent"});
ani_divs.hide();
if(playing)
{
main_img.animate({opacity:1},options.slide_speed, function()
{
//redudency needed here to catch the user clicking on an image during a change.
if(playing){next_image_anchor.trigger("click",["auto"]);}
});
}
}
function image_click(event, how){
//catch when user clicks on an image Then cancel current slideshow
if(jQuery(this).hasClass('pika_selected') || animating){ return; }
if(how!="auto" && how!="autoFirst"){
animating = true;
stop_anchor.hide();
play_anchor.show();
playing=false;
main_img.stop().dequeue();
if(options.show_captions)
{
caption_div.stop().dequeue();
}
}
//all our image variables
var image_source = "";
if(options.user_thumbs)
{
image_source = jQuery(this).attr("ref");
}else
{
image_source = this.src;
}
//thumbnail animations
var image_link = jQuery(this).attr("pikalink");
var image_caption = jQuery(this).parent().next("span").html();
//fade out the old thumb
images.filter(".pika_selected").fadeTo(250,0.4);
images.filter(".pika_selected").removeClass("pika_selected");
//fade in the new thumb
jQuery(this).fadeTo(250,1);
jQuery(this).addClass("pika_selected");
//fade the caption out
if(options.show_captions)
{
if(options.delay_caption)
{
caption_div.fadeTo(800,0);
}
caption_div.fadeTo(500,0,function(){
caption_div.html(image_caption);
caption_div.fadeTo(800,1);
});
}
AnimateImage(image_source, image_link, how);
}//end image_click function
function next_image(event, how){
if(images.filter(".pika_selected").hasClass("pika_last")){
images.filter(":first").trigger("click",how);
}else{
images.filter(".pika_selected").parents('li').next('li').find('div img').trigger("click",how);
}
}//end next image function
function previous_image(event, how){
if(images.filter(".pika_selected").hasClass("pika_first")){
images.filter(":last").trigger("click",how);
}else{
images.filter(".pika_selected").parents('li').prev('li').find('img').trigger("click",how);
}
}//end previous image function
function play_button(){
main_div.hover(
function(){play_div.fadeIn(400);},
function(){play_div.fadeOut(400);}
);
play_anchor.bind("click", function(){
main_img.stop();
main_img.dequeue();
if(options.show_captions)
{
caption_div.stop();
caption_div.dequeue();
}
playing = true;
next_image_anchor.trigger("click",["auto"]);
jQuery(this).hide();
stop_anchor.show();
});
stop_anchor.bind("click", function(){
playing = false;
jQuery(this).hide();
play_anchor.show();
});
}
play_button();
activate();
ulist.children('li:first').find('img:last').trigger("click",["autoFirst"]);
});//end return this.each
}//end build function
//activate applies the appropriate actions to all the different parts of the structure.
//and loads the sets the first image
})(jQuery);
|
