Created
March 27, 2009 23:06
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s2.css = { | |
PROPERTY_MAP: { | |
backgroundColor: 'color', | |
borderBottomColor: 'color', | |
borderBottomWidth: 'length', | |
borderLeftColor: 'color', | |
borderLeftWidth: 'length', | |
borderRightColor: 'color', | |
borderRightWidth: 'length', | |
borderSpacing: 'length', | |
borderTopColor: 'color', | |
borderTopWidth: 'length', | |
bottom: 'length', | |
color: 'color', | |
fontSize: 'length', | |
fontWeight: 'integer', | |
height: 'length', | |
left: 'length', | |
letterSpacing: 'length', | |
lineHeight: 'length', | |
marginBottom: 'length', | |
marginLeft: 'length', | |
marginRight: 'length', | |
marginTop: 'length', | |
maxHeight: 'length', | |
maxWidth: 'length', | |
minHeight: 'length', | |
minWidth: 'length', | |
opacity: 'number', | |
outlineColor: 'color', | |
outlineOffset: 'length', | |
outlineWidth: 'length', | |
paddingBottom: 'length', | |
paddingLeft: 'length', | |
paddingRight: 'length', | |
paddingTop: 'length', | |
right: 'length', | |
textIndent: 'length', | |
top: 'length', | |
width: 'length', | |
wordSpacing: 'length', | |
zIndex: 'integer', | |
zoom: 'number' | |
}, | |
LENGTH: /^(([\+\-]?[0-9\.]+)(em|ex|px|in|cm|mm|pt|pc|\%))|0$/, | |
NUMBER: /([\+-]*\d+\.?\d*)/, | |
__parseStyleElement: document.createElement('div'), | |
parseStyle: function(styleString) { | |
s2.css.__parseStyleElement.innerHTML = '<div style="' + styleString + '"></div>'; | |
var style = s2.css.__parseStyleElement.childNodes[0].style, styleRules = {}; | |
s2.css.NUMERIC_PROPERTIES.each( function(property){ | |
if (style[property]) styleRules[property] = style[property]; | |
}); | |
s2.css.COLOR_PROPERTIES.each( function(property){ | |
if (style[property]) styleRules[property] = s2.css.colorFromString(style[property]); | |
}); | |
if (Prototype.Browser.IE && styleString.include('opacity')) | |
styleRules.opacity = styleString.match(/opacity:\s*((?:0|1)?(?:\.\d*)?)/)[1]; | |
return styleRules; | |
}, | |
normalizeColor: function(color) { | |
if (!color || ['rgba(0, 0, 0, 0)','transparent'].include(color)) color = '#ffffff'; | |
color = s2.css.colorFromString(color); | |
return [0,1,2].map(function(i){ return parseInt(color.slice(i*2+1,i*2+3), 16) }); | |
}, | |
colorFromString: function(color) { | |
var value = '#', cols, i; | |
if (color.slice(0,4) == 'rgb(') { | |
cols = color.slice(4,color.length-1).split(','); | |
i=0; do { value += parseInt(cols[i]).toColorPart() } while (++i<3); | |
} else { | |
if (color.slice(0,1) == '#') { | |
if (color.length==4) for(i=1;i<4;i++) value += (color.charAt(i) + color.charAt(i)).toLowerCase(); | |
if (color.length==7) value = color.toLowerCase(); | |
} | |
} | |
return (value.length==7 ? value : (arguments[1] || value)); | |
}, | |
interpolateColor: function(from, to, position){ | |
from = s2.css.normalizeColor(from); | |
to = s2.css.normalizeColor(to); | |
return '#' + [0,1,2].map(function(index){ | |
return Math.max(Math.min(from[index].tween(to[index], position).round(), 255), 0).toColorPart(); | |
}).join(''); | |
}, | |
interpolateNumber: function(from, to, position){ | |
return (from||0).tween(to, position); | |
}, | |
interpolateLength: function(from, to, position){ | |
if(!from) from = '0'+to.gsub(s2.css.NUMBER,''); | |
to.scan(s2.css.NUMBER, function(match){ to = parseFloat(match[1]); }); | |
return from.gsub(s2.css.NUMBER, function(match){ | |
return parseFloat(match[1]).tween(to, position).toString(); | |
}); | |
}, | |
interpolatePercentage: function(from, to, position){ | |
return s2.css.interpolateLength(from, to, position); | |
}, | |
interpolateInteger: function(from, to, position){ | |
return from.tween(to, position).round(); | |
}, | |
interpolate: function(property, from, to, position){ | |
return s2.css['interpolate'+s2.css.PROPERTY_MAP[property.camelize()].capitalize()](from, to, position); | |
}, | |
ElementMethods: { | |
getStyles: function(element) { | |
var css = document.defaultView.getComputedStyle($(element), null); | |
return s2.css.PROPERTIES.inject({ }, function(styles, property) { | |
styles[property] = css[property]; | |
return styles; | |
}); | |
} | |
} | |
}; | |
s2.css.PROPERTIES = []; | |
for(property in s2.css.PROPERTY_MAP) s2.css.PROPERTIES.push(property); | |
s2.css.NUMERIC_PROPERTIES = s2.css.PROPERTIES.findAll(function(property){ return !property.endsWith('olor') }); | |
s2.css.COLOR_PROPERTIES = s2.css.PROPERTIES.findAll(function(property){ return property.endsWith('olor') }); | |
if (!(document.defaultView && document.defaultView.getComputedStyle)) { | |
s2.css.ElementMethods.getStyles = function(element) { | |
element = $(element); | |
var css = element.currentStyle, styles; | |
styles = s2.css.PROPERTIES.inject({ }, function(hash, property) { | |
hash[property] = css[property]; | |
return hash; | |
}); | |
if (!styles.opacity) styles.opacity = element.getOpacity(); | |
return styles; | |
}; | |
}; | |
Element.addMethods(s2.css.ElementMethods); |
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