// Copyright (c) 2005 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
//
// Parts (c) 2005 Justin Palmer (http://encytemedia.com/)
// Parts (c) 2005 Mark Pilgrim (http://diveintomark.org/)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Effect = {}
Effect2 = Effect; // deprecated
/* ------------- transitions ------------- */
Effect.Transitions = {}
Effect.Transitions.linear = function(pos) {
return pos;
}
Effect.Transitions.sinoidal = function(pos) {
return (-Math.cos(pos*Math.PI)/2) + 0.5;
}
Effect.Transitions.reverse = function(pos) {
return 1-pos;
}
Effect.Transitions.flicker = function(pos) {
return ((-Math.cos(pos*Math.PI)/4) + 0.75) + Math.random(0.25);
}
Effect.Transitions.wobble = function(pos) {
return (-Math.cos(pos*Math.PI*(9*pos))/2) + 0.5;
}
Effect.Transitions.pulse = function(pos) {
return (Math.floor(pos*10) % 2 == 0 ?
(pos*10-Math.floor(pos*10)) : 1-(pos*10-Math.floor(pos*10)));
}
Effect.Transitions.none = function(pos) {
return 0;
}
Effect.Transitions.full = function(pos) {
return 1;
}
/* ------------- element ext -------------- */
Element.makePositioned = function(element) {
element = $(element);
if(element.style.position == "")
element.style.position = "relative";
}
Element.makeClipping = function(element) {
element = $(element);
element._overflow = element.style.overflow || 'visible';
if(element._overflow!='hidden') element.style.overflow = 'hidden';
}
Element.undoClipping = function(element) {
element = $(element);
if(element._overflow!='hidden') element.style.overflow = element._overflow;
}
/* ------------- core effects ------------- */
Effect.Base = function() {};
Effect.Base.prototype = {
setOptions: function(options) {
this.options = Object.extend({
transition: Effect.Transitions.sinoidal,
duration: 1.0, // seconds
fps: 25.0, // max. 100fps
sync: false, // true for combining
from: 0.0,
to: 1.0
}, options || {});
},
start: function(options) {
this.setOptions(options || {});
this.currentFrame = 0;
this.startOn = new Date().getTime();
this.finishOn = this.startOn + (this.options.duration*1000);
if(this.options.beforeStart) this.options.beforeStart(this);
if(!this.options.sync) this.loop();
},
loop: function() {
var timePos = new Date().getTime();
if(timePos >= this.finishOn) {
this.render(this.options.to);
if(this.finish) this.finish();
if(this.options.afterFinish) this.options.afterFinish(this);
return;
}
var pos = (timePos - this.startOn) / (this.finishOn - this.startOn);
var frame = Math.round(pos * this.options.fps * this.options.duration);
if(frame > this.currentFrame) {
this.render(pos);
this.currentFrame = frame;
}
this.timeout = setTimeout(this.loop.bind(this), 10);
},
render: function(pos) {
if(this.options.transition) pos = this.options.transition(pos);
pos *= (this.options.to-this.options.from);
pos += this.options.from;
if(this.options.beforeUpdate) this.options.beforeUpdate(this);
if(this.update) this.update(pos);
if(this.options.afterUpdate) this.options.afterUpdate(this);
},
cancel: function() {
if(this.timeout) clearTimeout(this.timeout);
}
}
Effect.Parallel = Class.create();
Object.extend(Object.extend(Effect.Parallel.prototype, Effect.Base.prototype), {
initialize: function(effects) {
this.effects = effects || [];
this.start(arguments[1]);
},
update: function(position) {
for (var i = 0; i < this.effects.length; i++)
this.effects[i].render(position);
},
finish: function(position) {
for (var i = 0; i < this.effects.length; i++)
if(this.effects[i].finish) this.effects[i].finish(position);
}
});
// Internet Explorer caveat: works only on elements the have
// a 'layout', meaning having a given width or height.
// There is no way to safely set this automatically.
Effect.Opacity = Class.create();
Object.extend(Object.extend(Effect.Opacity.prototype, Effect.Base.prototype), {
initialize: function(element) {
this.element = $(element);
options = Object.extend({
from: 0.0,
to: 1.0
}, arguments[1] || {});
this.start(options);
},
update: function(position) {
this.setOpacity(position);
},
setOpacity: function(opacity) {
opacity = (opacity == 1) ? 0.99999 : opacity;
this.element.style.opacity = opacity;
this.element.style.filter = "alpha(opacity:"+opacity*100+")";
}
});
Effect.MoveBy = Class.create();
Object.extend(Object.extend(Effect.MoveBy.prototype, Effect.Base.prototype), {
initialize: function(element, toTop, toLeft) {
this.element = $(element);
this.originalTop = parseFloat(this.element.style.top || '0');
this.originalLeft = parseFloat(this.element.style.left || '0');
this.toTop = toTop;
this.toLeft = toLeft;
Element.makePositioned(this.element);
this.start(arguments[3]);
},
update: function(position) {
topd = this.toTop * position + this.originalTop;
leftd = this.toLeft * position + this.originalLeft;
this.setPosition(topd, leftd);
},
setPosition: function(topd, leftd) {
this.element.style.top = topd + "px";
this.element.style.left = leftd + "px";
}
});
Effect.Scale = Class.create();
Object.extend(Object.extend(Effect.Scale.prototype, Effect.Base.prototype), {
initialize: function(element, percent) {
this.element = $(element)
options = Object.extend({
scaleX: true,
scaleY: true,
scaleContent: true,
scaleFromCenter: false,
scaleMode: 'box', // 'box' or 'contents' or {} with provided values
scaleFrom: 100.0
}, arguments[2] || {});
this.originalTop = this.element.offsetTop;
this.originalLeft = this.element.offsetLeft;
if(this.element.style.fontSize=="") this.sizeEm = 1.0;
if(this.element.style.fontSize && this.element.style.fontSize.indexOf("em")>0)
this.sizeEm = parseFloat(this.element.style.fontSize);
this.factor = (percent/100.0) - (options.scaleFrom/100.0);
if(options.scaleMode=='box') {
this.originalHeight = this.element.clientHeight;
this.originalWidth = this.element.clientWidth;
} else
if(options.scaleMode=='contents') {
this.originalHeight = this.element.scrollHeight;
this.originalWidth = this.element.scrollWidth;
} else {
this.originalHeight = options.scaleMode.originalHeight;
this.originalWidth = options.scaleMode.originalWidth;
}
this.start(options);
},
update: function(position) {
currentScale = (this.options.scaleFrom/100.0) + (this.factor * position);
if(this.options.scaleContent && this.sizeEm)
this.element.style.fontSize = this.sizeEm*currentScale + "em";
this.setDimensions(
this.originalWidth * currentScale,
this.originalHeight * currentScale);
},
setDimensions: function(width, height) {
if(this.options.scaleX) this.element.style.width = width + 'px';
if(this.options.scaleY) this.element.style.height = height + 'px';
if(this.options.scaleFromCenter) {
topd = (height - this.originalHeight)/2;
leftd = (width - this.originalWidth)/2;
if(this.element.style.position=='absolute') {
if(this.options.scaleY) this.element.style.top = this.originalTop-topd + "px";
if(this.options.scaleX) this.element.style.left = this.originalLeft-leftd + "px";
} else {
if(this.options.scaleY) this.element.style.top = -topd + "px";
if(this.options.scaleX) this.element.style.left = -leftd + "px";
}
}
}
});
Effect.Highlight = Class.create();
Object.extend(Object.extend(Effect.Highlight.prototype, Effect.Base.prototype), {
initialize: function(element) {
this.element = $(element);
// try to parse current background color as default for endcolor
// browser stores this as: "rgb(255, 255, 255)", convert to "#ffffff" format
var endcolor = "#ffffff";
var current = this.element.style.backgroundColor;
if(current && current.slice(0,4) == "rgb(") {
endcolor = "#";
var cols = current.slice(4,current.length-1).split(',');
var i=0; do { endcolor += parseInt(cols[i]).toColorPart() } while (++i<3); }
var options = Object.extend({
startcolor: "#ffff99",
endcolor: endcolor,
restorecolor: current
}, arguments[1] || {});
// init color calculations
this.colors_base = [
parseInt(options.startcolor.slice(1,3),16),
parseInt(options.startcolor.slice(3,5),16),
parseInt(options.startcolor.slice(5),16) ];
this.colors_delta = [
parseInt(options.endcolor.slice(1,3),16)-this.colors_base[0],
parseInt(options.endcolor.slice(3,5),16)-this.colors_base[1],
parseInt(options.endcolor.slice(5),16)-this.colors_base[2] ];
this.start(options);
},
update: function(position) {
var colors = [
Math.round(this.colors_base[0]+(this.colors_delta[0]*position)),
Math.round(this.colors_base[1]+(this.colors_delta[1]*position)),
Math.round(this.colors_base[2]+(this.colors_delta[2]*position)) ];
this.element.style.backgroundColor = "#" +
colors[0].toColorPart() + colors[1].toColorPart() + colors[2].toColorPart();
},
finish: function() {
this.element.style.backgroundColor = this.options.restorecolor;
}
});
Effect.ScrollTo = Class.create();
Object.extend(Object.extend(Effect.ScrollTo.prototype, Effect.Base.prototype), {
initialize: function(element) {
this.element = $(element);
Position.prepare();
var offsets = Position.cumulativeOffset(this.element);
var max = window.innerHeight ?
window.height - window.innerHeight :
document.body.scrollHeight -
(document.documentElement.clientHeight ?
document.documentElement.clientHeight : document.body.clientHeight);
this.scrollStart = Position.deltaY;
this.delta = (offsets[1] > max ? max : offsets[1]) - this.scrollStart;
this.start(arguments[1] || {});
},
update: function(position) {
Position.prepare();
window.scrollTo(Position.deltaX,
this.scrollStart + (position*this.delta));
}
});
/* ------------- prepackaged effects ------------- */
Effect.Fade = function(element) {
options = Object.extend({
from: 1.0,
to: 0.0,
afterFinish: function(effect)
{ Element.hide(effect.element);
effect.setOpacity(1); }
}, arguments[1] || {});
new Effect.Opacity(element,options);
}
Effect.Appear = function(element) {
options = Object.extend({
from: 0.0,
to: 1.0,
beforeStart: function(effect)
{ effect.setOpacity(0);
Element.show(effect.element); },
afterUpdate: function(effect)
{ Element.show(effect.element); }
}, arguments[1] || {});
new Effect.Opacity(element,options);
}
Effect.Puff = function(element) {
new Effect.Parallel(
[ new Effect.Scale(element, 200, { sync: true, scaleFromCenter: true }),
new Effect.Opacity(element, { sync: true, to: 0.0, from: 1.0 } ) ],
{ duration: 1.0,
afterUpdate: function(effect)
{ effect.effects[0].element.style.position = 'absolute'; },
afterFinish: function(effect)
{ Element.hide(effect.effects[0].element); }
}
);
}
Effect.BlindUp = function(element) {
Element.makeClipping(element);
new Effect.Scale(element, 0,
Object.extend({ scaleContent: false,
scaleX: false,
afterFinish: function(effect)
{
Element.hide(effect.element);
Element.undoClipping(effect.element);
}
}, arguments[1] || {})
);
}
Effect.BlindDown = function(element) {
$(element).style.height = '0px';
Element.makeClipping(element);
Element.show(element);
new Effect.Scale(element, 100,
Object.extend({ scaleContent: false,
scaleX: false,
scaleMode: 'contents',
scaleFrom: 0,
afterFinish: function(effect) {
Element.undoClipping(effect.element);
}
}, arguments[1] || {})
);
}
Effect.SwitchOff = function(element) {
new Effect.Appear(element,
{ duration: 0.4,
transition: Effect.Transitions.flicker,
afterFinish: function(effect)
{ effect.element.style.overflow = 'hidden';
new Effect.Scale(effect.element, 1,
{ duration: 0.3, scaleFromCenter: true,
scaleX: false, scaleContent: false,
afterUpdate: function(effect) {
if(effect.element.style.position=="")
effect.element.style.position = 'relative'; },
afterFinish: function(effect) { Element.hide(effect.element); }
} )
}
} );
}
Effect.DropOut = function(element) {
new Effect.Parallel(
[ new Effect.MoveBy(element, 100, 0, { sync: true }),
new Effect.Opacity(element, { sync: true, to: 0.0, from: 1.0 } ) ],
{ duration: 0.5,
afterFinish: function(effect)
{ Element.hide(effect.effects[0].element); }
});
}
Effect.Shake = function(element) {
new Effect.MoveBy(element, 0, 20,
{ duration: 0.05, afterFinish: function(effect) {
new Effect.MoveBy(effect.element, 0, -40,
{ duration: 0.1, afterFinish: function(effect) {
new Effect.MoveBy(effect.element, 0, 40,
{ duration: 0.1, afterFinish: function(effect) {
new Effect.MoveBy(effect.element, 0, -40,
{ duration: 0.1, afterFinish: function(effect) {
new Effect.MoveBy(effect.element, 0, 40,
{ duration: 0.1, afterFinish: function(effect) {
new Effect.MoveBy(effect.element, 0, -20,
{ duration: 0.05, afterFinish: function(effect) {
}}) }}) }}) }}) }}) }});
}
Effect.SlideDown = function(element) {
element = $(element);
element.style.height = '0px';
Element.makeClipping(element);
Element.cleanWhitespace(element);
Element.makePositioned(element.firstChild);
Element.show(element);
new Effect.Scale(element, 100,
Object.extend({ scaleContent: false,
scaleX: false,
scaleMode: 'contents',
scaleFrom: 0,
afterUpdate: function(effect)
{ effect.element.firstChild.style.bottom =
(effect.originalHeight - effect.element.clientHeight) + 'px'; },
afterFinish: function(effect)
{ Element.undoClipping(effect.element); }
}, arguments[1] || {})
);
}
Effect.SlideUp = function(element) {
element = $(element);
Element.makeClipping(element);
Element.cleanWhitespace(element);
Element.makePositioned(element.firstChild);
Element.show(element);
new Effect.Scale(element, 0,
Object.extend({ scaleContent: false,
scaleX: false,
afterUpdate: function(effect)
{ effect.element.firstChild.style.bottom =
(effect.originalHeight - effect.element.clientHeight) + 'px'; },
afterFinish: function(effect)
{
Element.hide(effect.element);
Element.undoClipping(effect.element);
}
}, arguments[1] || {})
);
}
Effect.Squish = function(element) {
new Effect.Scale(element, 0,
{ afterFinish: function(effect) { Element.hide(effect.element); } });
}
Effect.Grow = function(element) {
element = $(element);
var options = arguments[1] || {};
var originalWidth = element.clientWidth;
var originalHeight = element.clientHeight;
element.style.overflow = 'hidden';
Element.show(element);
var direction = options.direction || 'center';
var moveTransition = options.moveTransition || Effect.Transitions.sinoidal;
var scaleTransition = options.scaleTransition || Effect.Transitions.sinoidal;
var opacityTransition = options.opacityTransition || Effect.Transitions.full;
var initialMoveX, initialMoveY;
var moveX, moveY;
switch (direction) {
case 'top-left':
initialMoveX = initialMoveY = moveX = moveY = 0;
break;
case 'top-right':
initialMoveX = originalWidth;
initialMoveY = moveY = 0;
moveX = -originalWidth;
break;
case 'bottom-left':
initialMoveX = moveX = 0;
initialMoveY = originalHeight;
moveY = -originalHeight;
break;
case 'bottom-right':
initialMoveX = originalWidth;
initialMoveY = originalHeight;
moveX = -originalWidth;
moveY = -originalHeight;
break;
case 'center':
initialMoveX = originalWidth / 2;
initialMoveY = originalHeight / 2;
moveX = -originalWidth / 2;
moveY = -originalHeight / 2;
break;
}
new Effect.MoveBy(element, initialMoveY, initialMoveX, {
duration: 0.01,
beforeUpdate: function(effect) { $(element).style.height = '0px'; },
afterFinish: function(effect) {
new Effect.Parallel(
[ new Effect.Opacity(element, { sync: true, to: 1.0, from: 0.0, transition: opacityTransition }),
new Effect.MoveBy(element, moveY, moveX, { sync: true, transition: moveTransition }),
new Effect.Scale(element, 100, {
scaleMode: { originalHeight: originalHeight, originalWidth: originalWidth },
sync: true, scaleFrom: 0, scaleTo: 100, transition: scaleTransition })],
options); }
});
}
Effect.Shrink = function(element) {
element = $(element);
var options = arguments[1] || {};
var originalWidth = element.clientWidth;
var originalHeight = element.clientHeight;
element.style.overflow = 'hidden';
Element.show(element);
var direction = options.direction || 'center';
var moveTransition = options.moveTransition || Effect.Transitions.sinoidal;
var scaleTransition = options.scaleTransition || Effect.Transitions.sinoidal;
var opacityTransition = options.opacityTransition || Effect.Transitions.none;
var moveX, moveY;
switch (direction) {
case 'top-left':
moveX = moveY = 0;
break;
case 'top-right':
moveX = originalWidth;
moveY = 0;
break;
case 'bottom-left':
moveX = 0;
moveY = originalHeight;
break;
case 'bottom-right':
moveX = originalWidth;
moveY = originalHeight;
break;
case 'center':
moveX = originalWidth / 2;
moveY = originalHeight / 2;
break;
}
new Effect.Parallel(
[ new Effect.Opacity(element, { sync: true, to: 0.0, from: 1.0, transition: opacityTransition }),
new Effect.Scale(element, 0, { sync: true, transition: moveTransition }),
new Effect.MoveBy(element, moveY, moveX, { sync: true, transition: scaleTransition }) ],
options);
}
Effect.Pulsate = function(element) {
var options = arguments[1] || {};
var transition = options.transition || Effect.Transitions.sinoidal;
var reverser = function(pos){ return transition(1-Effect.Transitions.pulse(pos)) };
reverser.bind(transition);
new Effect.Opacity(element,
Object.extend(Object.extend({ duration: 3.0,
afterFinish: function(effect) { Element.show(effect.element); }
}, options), {transition: reverser}));
}
Effect.Fold = function(element) {
$(element).style.overflow = 'hidden';
new Effect.Scale(element, 5, Object.extend({
scaleContent: false,
scaleTo: 100,
scaleX: false,
afterFinish: function(effect) {
new Effect.Scale(element, 1, {
scaleContent: false,
scaleTo: 0,
scaleY: false,
afterFinish: function(effect) { Element.hide(effect.element) } });
}}, arguments[1] || {}));
}
// old: new Effect.ContentZoom(element, percent)
// new: Element.setContentZoom(element, percent)
Element.setContentZoom = function(element, percent) {
var element = $(element);
element.style.fontSize = (percent/100) + "em";
if(navigator.appVersion.indexOf('AppleWebKit')>0) window.scrollBy(0,0);
}
