aaac7fed
 liuqimichale
add
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'use strict';
exports.type = 'perItem';
exports.active = false;
exports.description = 'rounds list of values to the fixed precision';
exports.params = {
floatPrecision: 3,
leadingZero: true,
defaultPx: true,
convertToPx: true
};
var regNumericValues = /^([\-+]?\d*\.?\d+([eE][\-+]?\d+)?)(px|pt|pc|mm|cm|m|in|ft|em|ex|%)?$/,
regSeparator = /\s+,?\s*|,\s*/,
removeLeadingZero = require('../lib/svgo/tools').removeLeadingZero,
absoluteLengths = { // relative to px
cm: 96/2.54,
mm: 96/25.4,
in: 96,
pt: 4/3,
pc: 16
};
/**
* Round list of values to the fixed precision.
*
* @example
* <svg viewBox="0 0 200.28423 200.28423" enable-background="new 0 0 200.28423 200.28423">
* ⬇
* <svg viewBox="0 0 200.284 200.284" enable-background="new 0 0 200.284 200.284">
*
*
* <polygon points="208.250977 77.1308594 223.069336 ... "/>
* ⬇
* <polygon points="208.251 77.131 223.069 ... "/>
*
*
* @param {Object} item current iteration item
* @param {Object} params plugin params
* @return {Boolean} if false, item will be filtered out
*
* @author kiyopikko
*/
exports.fn = function(item, params) {
if ( item.hasAttr('points') ) {
roundValues(item.attrs.points);
}
if ( item.hasAttr('enable-background') ) {
roundValues(item.attrs['enable-background']);
}
if ( item.hasAttr('viewBox') ) {
roundValues(item.attrs.viewBox);
}
if ( item.hasAttr('stroke-dasharray') ) {
roundValues(item.attrs['stroke-dasharray']);
}
if ( item.hasAttr('dx') ) {
roundValues(item.attrs.dx);
}
if ( item.hasAttr('dy') ) {
roundValues(item.attrs.dy);
}
if ( item.hasAttr('x') ) {
roundValues(item.attrs.x);
}
if ( item.hasAttr('y') ) {
roundValues(item.attrs.y);
}
function roundValues($prop){
var num, units,
match,
matchNew,
lists = $prop.value,
listsArr = lists.split(regSeparator),
roundedListArr = [],
roundedList;
listsArr.forEach(function(elem){
match = elem.match(regNumericValues);
matchNew = elem.match(/new/);
// if attribute value matches regNumericValues
if(match){
// round it to the fixed precision
num = +(+match[1]).toFixed(params.floatPrecision),
units = match[3] || '';
// convert absolute values to pixels
if (params.convertToPx && units && (units in absoluteLengths)) {
var pxNum = +(absoluteLengths[units] * match[1]).toFixed(params.floatPrecision);
if (String(pxNum).length < match[0].length)
num = pxNum,
units = 'px';
}
// and remove leading zero
if (params.leadingZero) {
num = removeLeadingZero(num);
}
// remove default 'px' units
if (params.defaultPx && units === 'px') {
units = '';
}
roundedListArr.push(num+units);
}
// if attribute value is "new"(only enable-background).
else if(matchNew){
roundedListArr.push('new');
}
});
roundedList = roundedListArr.join(' ');
$prop.value = roundedList;
}
};
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