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Team:UT Dallas/scrollingcarousel.2.0.min.js
From 2011.igem.org
(function (a) {
a.fn.scrollingCarousel = function (d, e) {
if (this.length > 1) {
var c = new Array();
this.each(function (h) {
c.push(a(this).scrollingCarousel(d, h))
});
return c
}
var f = a.extend({}, a().scrollingCarousel.defaults, d);
var b;
var g;
this.Destroy = function (h) {
var i = this;
var h = (h != undefined) ? h : false;
a(i).removeData("scrollingCarousel");
i.children(":eq(1)").remove();
if (a(this).find("> div").length > 0) {
i[0].innerHTML = a(this).find("> div")[0].innerHTML;
i.children().each(function () {
a(this, i)[0].style.cssText = ""
})
} else {
i.find("li").each(function () {
a(this, i)[0].style.cssText = ""
})
}
i.children()[0].style.cssText = "";
i[0].style.cssText = "";
i.unbind()
};
this.Update = function (h) {
f = null;
f = a.extend({}, a().scrollingCarousel.defaults, h);
this.Destroy(true);
return this.Create()
};
this.Create = function (h, j) {
if (!a(this).html()) {
return false
}
var r = this;
var l = r.html();
if (a(r).data("scrollingCarousel") == true && j != "pause") {
return this
}
if (f.beforeCreateFunction != null && a.isFunction(f.beforeCreateFunction)) {
f.beforeCreateFunction(r, f)
}
var p;
var i = 0;
var n;
var m;
var s;
var o;
var q;
var x;
var t = new Object();
var w = r[0];
w.style.paddingLeft = "0";
w.style.paddingRight = "0";
var C = w.offsetWidth;
var u = r.children()[0].nodeName.toLowerCase();
switch (u) {
case "div":
if (!j) {
w.innerHTML = "" + r[0].innerHTML + "
";
w.innerHTML += w.innerHTML
}
p = r.find("> div");
s = r.find("> div:first > div");
break;
case "ul":
if (!j) {
w.innerHTML += w.innerHTML
}
p = r.find("ul");
s = r.find("ul:first > li");
break;
case "ol":
if (!j) {
w.innerHTML += w.innerHTML
}
p = r.find("ol");
s = r.find("ol:first > li");
break;
default:
console.log("unable to initialise scroller - please ensure contents are either in a UL, an OL or in DIVs");
return
}
switch (f.scrollSpeed.toLowerCase()) {
case "slow":
m = 1;
break;
case "fast":
m = 4;
break;
case "medium":
default:
m = 2
}
var k = 0;
var A = 0;
var B = 0;
var z;
var v;
switch (f.scrollerAlignment.toLowerCase()) {
case "vertical":
a(s).each(function (D) {
k += a(this, r)[0].offsetHeight + parseInt(a(this, r).css("marginTop")) + parseInt(a(this, r).css("marginBottom"));
if (a(this, r)[0].offsetWidth > B) {
B = a(this, r)[0].offsetWidth
}
});
break;
case "horizontal":
default:
a(s).each(function (D) {
k += a(this, r)[0].offsetWidth + parseInt(a(this, r).css("marginLeft")) + parseInt(a(this, r).css("marginRight"));
if (a(this, r)[0].offsetHeight > A) {
A = a(this, r)[0].offsetHeight
}
});
break
}
if (!j) {
if (f.scrollerAlignment.toLowerCase() != "vertical") {
w.style.height = A + "px"
} else {
w.style.width = B + "px";
w.style.height = (a(w).height() > 0) ? a(w).height() + "px" : a(w).parent().height() + "px";
C = w.offsetHeight
}
if (k > C) {
var y = Math.round((k / 100) * f.scrollerOffset);
o = y - (Math.round(C / 2));
if (o > (k - C)) {
o = k - C
}
} else {
return false
}
w.style.overflow = "hidden";
w.style.position = "relative";
var z;
p.each(function () {
a(this, r)[0].style.position = "absolute";
if (f.scrollerAlignment.toLowerCase() != "vertical") {
a(this, r)[0].style.top = "0";
a(this, r)[0].style.width = k + "px"
} else {
a(this, r)[0].style.left = "0";
a(this, r)[0].style.height = k + "px";
a(this, r)[0].style.width = B + "px"
}
a(this).children().each(function (D) {
if (f.scrollerAlignment.toLowerCase() != "vertical") {
a(this, r)[0].style.cssFloat = "left"
}
a(this, r)[0].style.position = "static"
})
});
if (f.scrollerAlignment.toLowerCase() != "vertical") {
p[0].style.left = (o > 0) ? "-" + o + "px" : "0px";
if (f.looped == true) {
p[1].style.left = p[0].offsetLeft - k + "px"
} else {
p[1].style.display = "none";
p[1].style.top = "-1000px"
}
} else {
p[0].style.top = (o > 0) ? "-" + o + "px" : "0";
if (f.looped == true) {
p[1].style.top = p[0].offsetTop - k + "px"
} else {
p[1].style.display = "none";
p[1].style.left = "-1000px"
}
}
r.mouseenter(function () {
t.startCarousel()
});
r.mouseleave(function () {
t.stopCarousel(true);
if (f.autoScroll == true) {
t.autoScroll()
}
});
r.mousemove(function (E) {
var F = {
x: 0,
y: 0
};
if (E.pageX || E.pageY) {
F.x = E.pageX;
F.y = E.pageY
} else {
var G = document.documentElement;
var D = document.body;
F.x = E.clientX + ((G.scrollLeft || D.scrollLeft) - (G.clientLeft || 0));
F.y = E.clientY + ((G.scrollTop || D.scrollTop) - (G.clientTop || 0))
}
cursorPosition = F
})
}
t.autoScroll = function () {
var D = 60;
if (f.looped == false) {
return
}
if (g) {
clearInterval(g);
g = 0
}
n = n ? n : ((f.scrollerAlignment.toLowerCase() != "vertical") ? parseInt(p[0].style.left) : parseInt(p[0].style.top));
f.autoScrollSpeed = (f.autoScrollSpeed < 1000) ? 1000 : f.autoScrollSpeed;
if ((f.autoScrollSpeed / D) < C) {
q = Math.round(C / (f.autoScrollSpeed / D))
} else {
q = 1;
D = Math.round(f.autoScrollSpeed / C)
}
g = setInterval(function () {
switch (f.autoScrollDirection.toLowerCase()) {
case "right":
case "down":
if ((n + q) > k) {
n = 0;
i = (i == 0) ? 1 : 0
} else {
n = n + q
}
break;
case "left":
case "up":
default:
if ((n - q) < (0 - (k - C))) {
n = C;
i = (i == 0) ? 1 : 0
} else {
n = n - q
}
}
if (f.scrollerAlignment.toLowerCase() != "vertical") {
p[i].style.left = n + "px";
p[(i == 0) ? 1 : 0].style.left = n - k + "px"
} else {
p[i].style.top = n + "px";
p[(i == 0) ? 1 : 0].style.top = n - k + "px"
}
}, D)
};
t.startCarousel = function () {
if (g) {
clearInterval(g);
g = 0
}
x = (f.scrollerAlignment.toLowerCase() != "vertical") ? Math.round(a(w).offset().left + (w.offsetWidth / 2)) : Math.round(a(w).offset().top + (w.offsetHeight / 2));
n = n ? n : ((f.scrollerAlignment.toLowerCase() != "vertical") ? parseInt(p[0].style.left) : parseInt(p[0].style.top));
b = setInterval(function () {
var F;
var E = (f.scrollerAlignment.toLowerCase() != "vertical") ? cursorPosition.x : cursorPosition.y;
var D = C / 2;
F = (E < x) ? x - E : E - x;
q = (F < (Math.ceil((D / 100) * 30))) ? 1 : ((F < (Math.ceil((D / 100) * 50))) ? 2 * m : ((F < (Math.ceil((D / 100) * 70))) ? 3 * m : ((F < (Math.ceil((D / 100) * 90))) ? 4 * m : 6 * m)));
if(q<3) q=0; //creates a dead reagion in the center
if (E < x) {
if ((n + q) > 0 && f.looped == false) {
n = 0
} else {
if ((n + q) > k) {
n = 0;
i = (i == 0) ? 1 : 0
} else {
n = n + q
}
}
} else {
if (E > x) {
if ((n - q) < (0 - (k - C))) {
if (f.looped == false) {
n = (0 - (k - C))
} else {
n = C;
i = (i == 0) ? 1 : 0
}
} else {
n = n - q
}
}
}
//$('#results').html(n);
if (f.scrollerAlignment.toLowerCase() != "vertical") {
p[i].style.left = (n-25) + "px";
p[(i == 0) ? 1 : 0].style.left = (n-25) - k + "px"
} else {
p[i].style.top = n + "px";
p[(i == 0) ? 1 : 0].style.top = n - k + "px"
}
}, 40)
};
t.stopCarousel = function (H) {
if (!b) {
return
}
clearInterval(b);
b = 0;
if (!H || f.looped == false || f.autoScroll == true) {
return
}
if (q > 1) {
var E;
var G = 0;
for (E = q; E > 1; E--) {
G += E
}
var F = (f.scrollerAlignment.toLowerCase() != "vertical") ? cursorPosition.x : cursorPosition.y;
if (F < x) {
if ((n + G) > k) {
n = n - k;
i = (i == 0) ? 1 : 0
}
} else {
if ((n - G) < (0 - (k - C))) {
n = n + k;
i = (i == 0) ? 1 : 0
}
}
var D = setInterval(function () {
if (q > 1) {
if (F < x) {
n += q
} else {
n -= q
}
if (f.scrollerAlignment.toLowerCase() != "vertical") {
p[i].style.left = n + "px";
p[(i == 0) ? 1 : 0].style.left = n - k + "px"
} else {
p[i].style.top = n + "px";
p[(i == 0) ? 1 : 0].style.top = n - k + "px"
}
q--
} else {
clearInterval(D)
}
}, 50)
}
};
if (j != "pause") {
if (f.autoScroll == true) {
t.autoScroll()
}
}
switch (j) {
case "pause":
t.stopCarousel();
if (g) {
clearInterval(g);
g = 0
}
r.unbind("mouseenter");
r.unbind("mouseleave");
a(r).data("scrollingCarousel", false);
return;
break;
case "play":
a("html").mousemove(function (E) {
var F = {
x: 0,
y: 0
};
if (E.pageX || E.pageY) {
F.x = E.pageX;
F.y = E.pageY
} else {
var G = document.documentElement;
var D = document.body;
F.x = E.clientX + (G.scrollLeft || D.scrollLeft) - (G.clientLeft || 0);
F.y = E.clientY + (G.scrollTop || D.scrollTop) - (G.clientTop || 0)
}
cursorPosition = F;
if (cursorPosition.x >= r.offset().left && cursorPosition.x <= (r.offset().left + r[0].offsetWidth) && cursorPosition.y >= r.offset().top && cursorPosition.y <= (r.offset().top + r[0].offsetHeight)) {
t.startCarousel()
}
r.mouseenter(function () {
t.startCarousel()
});
r.mouseleave(function () {
t.stopCarousel(true);
if (f.autoScroll == true) {
t.autoScroll()
}
});
a(this).unbind("mousemove");
if (f.autoScroll == true) {
t.autoScroll()
}
});
break
}
a(r).data("scrollingCarousel", true);
if (f.afterCreateFunction != null && a.isFunction(f.afterCreateFunction)) {
f.afterCreateFunction(r, f)
}
return this
};
this.Pause = function () {
this.Create(e, "pause")
};
this.Play = function () {
this.Create(e, "play")
};
return this.Create(e)
};
jQuery.fn.scrollingCarousel.defaults = {
autoScroll: false,
autoScrollDirection: "left",
autoScrollSpeed: 5000,
looped: false,
scrollerAlignment: "horizontal",
scrollerOffset: 0,
scrollSpeed: "medium",
beforeCreateFunction: null,
afterCreateFunction: null
}
})(jQuery);
