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'use strict';
exports.type = 'perItem';
exports.active = true;
exports.description = 'converts colors: rgb() to #rrggbb and #rrggbb to #rgb';
exports.params = {
currentColor: false,
names2hex: true,
rgb2hex: true,
shorthex: true,
shortname: true
};
var collections = require('./_collections'),
rNumber = '([+-]?(?:\\d*\\.\\d+|\\d+\\.?)%?)',
rComma = '\\s*,\\s*',
regRGB = new RegExp('^rgb\\(\\s*' + rNumber + rComma + rNumber + rComma + rNumber + '\\s*\\)$'),
regHEX = /^\#(([a-fA-F0-9])\2){3}$/,
none = /\bnone\b/i;
/**
* Convert different colors formats in element attributes to hex.
*
* @see http://www.w3.org/TR/SVG/types.html#DataTypeColor
* @see http://www.w3.org/TR/SVG/single-page.html#types-ColorKeywords
*
* @example
* Convert color name keyword to long hex:
* fuchsia ➡ #ff00ff
*
* Convert rgb() to long hex:
* rgb(255, 0, 255) ➡ #ff00ff
* rgb(50%, 100, 100%) ➡ #7f64ff
*
* Convert long hex to short hex:
* #aabbcc ➡ #abc
*
* Convert hex to short name
* #000080 ➡ navy
*
* @param {Object} item current iteration item
* @param {Object} params plugin params
* @return {Boolean} if false, item will be filtered out
*
* @author Kir Belevich
*/
exports.fn = function(item, params) {
if (item.elem) {
item.eachAttr(function(attr) {
if (collections.colorsProps.indexOf(attr.name) > -1) {
var val = attr.value,
match;
// Convert colors to currentColor
if (params.currentColor) {
if (typeof params.currentColor === 'string') {
match = val === params.currentColor;
} else if (params.currentColor.exec) {
match = params.currentColor.exec(val);
} else {
match = !val.match(none);
}
if (match) {
val = 'currentColor';
}
}
// Convert color name keyword to long hex
if (params.names2hex && val.toLowerCase() in collections.colorsNames) {
val = collections.colorsNames[val.toLowerCase()];
}
// Convert rgb() to long hex
if (params.rgb2hex && (match = val.match(regRGB))) {
match = match.slice(1, 4).map(function(m) {
if (m.indexOf('%') > -1)
m = Math.round(parseFloat(m) * 2.55);
return Math.max(0, Math.min(m, 255));
});
val = rgb2hex(match);
}
// Convert long hex to short hex
if (params.shorthex && (match = val.match(regHEX))) {
val = '#' + match[0][1] + match[0][3] + match[0][5];
}
// Convert hex to short name
if (params.shortname && val in collections.colorsShortNames) {
val = collections.colorsShortNames[val];
}
attr.value = val;
}
});
}
};
/**
* Convert [r, g, b] to #rrggbb.
*
* @see https://gist.github.com/983535
*
* @example
* rgb2hex([255, 255, 255]) // '#ffffff'
*
* @param {Array} rgb [r, g, b]
* @return {String} #rrggbb
*
* @author Jed Schmidt
*/
function rgb2hex(rgb) {
return '#' + ('00000' + (rgb[0] << 16 | rgb[1] << 8 | rgb[2]).toString(16)).slice(-6).toUpperCase();
}
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