[79a0317] | 1 | var override = require('../utils/override');
|
---|
| 2 |
|
---|
| 3 | var INTEGER_PATTERN = /^\d+$/;
|
---|
| 4 |
|
---|
| 5 | var ALL_UNITS = ['*', 'all'];
|
---|
| 6 | var DEFAULT_PRECISION = 'off'; // all precision changes are disabled
|
---|
| 7 | var DIRECTIVES_SEPARATOR = ','; // e.g. *=5,px=3
|
---|
| 8 | var DIRECTIVE_VALUE_SEPARATOR = '='; // e.g. *=5
|
---|
| 9 |
|
---|
| 10 | function roundingPrecisionFrom(source) {
|
---|
| 11 | return override(defaults(DEFAULT_PRECISION), buildPrecisionFrom(source));
|
---|
| 12 | }
|
---|
| 13 |
|
---|
| 14 | function defaults(value) {
|
---|
| 15 | return {
|
---|
| 16 | ch: value,
|
---|
| 17 | cm: value,
|
---|
| 18 | em: value,
|
---|
| 19 | ex: value,
|
---|
| 20 | in: value,
|
---|
| 21 | mm: value,
|
---|
| 22 | pc: value,
|
---|
| 23 | pt: value,
|
---|
| 24 | px: value,
|
---|
| 25 | q: value,
|
---|
| 26 | rem: value,
|
---|
| 27 | vh: value,
|
---|
| 28 | vmax: value,
|
---|
| 29 | vmin: value,
|
---|
| 30 | vw: value,
|
---|
| 31 | '%': value
|
---|
| 32 | };
|
---|
| 33 | }
|
---|
| 34 |
|
---|
| 35 | function buildPrecisionFrom(source) {
|
---|
| 36 | if (source === null || source === undefined) {
|
---|
| 37 | return {};
|
---|
| 38 | }
|
---|
| 39 |
|
---|
| 40 | if (typeof source == 'boolean') {
|
---|
| 41 | return {};
|
---|
| 42 | }
|
---|
| 43 |
|
---|
| 44 | if (typeof source == 'number' && source == -1) {
|
---|
| 45 | return defaults(DEFAULT_PRECISION);
|
---|
| 46 | }
|
---|
| 47 |
|
---|
| 48 | if (typeof source == 'number') {
|
---|
| 49 | return defaults(source);
|
---|
| 50 | }
|
---|
| 51 |
|
---|
| 52 | if (typeof source == 'string' && INTEGER_PATTERN.test(source)) {
|
---|
| 53 | return defaults(parseInt(source));
|
---|
| 54 | }
|
---|
| 55 |
|
---|
| 56 | if (typeof source == 'string' && source == DEFAULT_PRECISION) {
|
---|
| 57 | return defaults(DEFAULT_PRECISION);
|
---|
| 58 | }
|
---|
| 59 |
|
---|
| 60 | if (typeof source == 'object') {
|
---|
| 61 | return source;
|
---|
| 62 | }
|
---|
| 63 |
|
---|
| 64 | return source
|
---|
| 65 | .split(DIRECTIVES_SEPARATOR)
|
---|
| 66 | .reduce(function(accumulator, directive) {
|
---|
| 67 | var directiveParts = directive.split(DIRECTIVE_VALUE_SEPARATOR);
|
---|
| 68 | var name = directiveParts[0];
|
---|
| 69 | var value = parseInt(directiveParts[1]);
|
---|
| 70 |
|
---|
| 71 | if (Number.isNaN(value) || value == -1) {
|
---|
| 72 | value = DEFAULT_PRECISION;
|
---|
| 73 | }
|
---|
| 74 |
|
---|
| 75 | if (ALL_UNITS.indexOf(name) > -1) {
|
---|
| 76 | accumulator = override(accumulator, defaults(value));
|
---|
| 77 | } else {
|
---|
| 78 | accumulator[name] = value;
|
---|
| 79 | }
|
---|
| 80 |
|
---|
| 81 | return accumulator;
|
---|
| 82 | }, {});
|
---|
| 83 | }
|
---|
| 84 |
|
---|
| 85 | module.exports = {
|
---|
| 86 | DEFAULT: DEFAULT_PRECISION,
|
---|
| 87 | roundingPrecisionFrom: roundingPrecisionFrom
|
---|
| 88 | };
|
---|