GoScrobble/web/node_modules/postcss-calc/dist/lib/convertUnit.js

157 lines
2.7 KiB
JavaScript
Raw Permalink Normal View History

2022-04-25 02:47:15 +00:00
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = void 0;
var conversions = {
// Absolute length units
'px': {
'px': 1,
'cm': 96 / 2.54,
'mm': 96 / 25.4,
'q': 96 / 101.6,
'in': 96,
'pt': 96 / 72,
'pc': 16
},
'cm': {
'px': 2.54 / 96,
'cm': 1,
'mm': 0.1,
'q': 0.025,
'in': 2.54,
'pt': 2.54 / 72,
'pc': 2.54 / 6
},
'mm': {
'px': 25.4 / 96,
'cm': 10,
'mm': 1,
'q': 0.25,
'in': 25.4,
'pt': 25.4 / 72,
'pc': 25.4 / 6
},
'q': {
'px': 101.6 / 96,
'cm': 40,
'mm': 4,
'q': 1,
'in': 101.6,
'pt': 101.6 / 72,
'pc': 101.6 / 6
},
'in': {
'px': 1 / 96,
'cm': 1 / 2.54,
'mm': 1 / 25.4,
'q': 1 / 101.6,
'in': 1,
'pt': 1 / 72,
'pc': 1 / 6
},
'pt': {
'px': 0.75,
'cm': 72 / 2.54,
'mm': 72 / 25.4,
'q': 72 / 101.6,
'in': 72,
'pt': 1,
'pc': 12
},
'pc': {
'px': 0.0625,
'cm': 6 / 2.54,
'mm': 6 / 25.4,
'q': 6 / 101.6,
'in': 6,
'pt': 6 / 72,
'pc': 1
},
// Angle units
'deg': {
'deg': 1,
'grad': 0.9,
'rad': 180 / Math.PI,
'turn': 360
},
'grad': {
'deg': 400 / 360,
'grad': 1,
'rad': 200 / Math.PI,
'turn': 400
},
'rad': {
'deg': Math.PI / 180,
'grad': Math.PI / 200,
'rad': 1,
'turn': Math.PI * 2
},
'turn': {
'deg': 1 / 360,
'grad': 0.0025,
'rad': 0.5 / Math.PI,
'turn': 1
},
// Duration units
's': {
's': 1,
'ms': 0.001
},
'ms': {
's': 1000,
'ms': 1
},
// Frequency units
'hz': {
'hz': 1,
'khz': 1000
},
'khz': {
'hz': 0.001,
'khz': 1
},
// Resolution units
'dpi': {
'dpi': 1,
'dpcm': 1 / 2.54,
'dppx': 1 / 96
},
'dpcm': {
'dpi': 2.54,
'dpcm': 1,
'dppx': 2.54 / 96
},
'dppx': {
'dpi': 96,
'dpcm': 96 / 2.54,
'dppx': 1
}
};
function convertUnit(value, sourceUnit, targetUnit, precision) {
var sourceUnitNormalized = sourceUnit.toLowerCase();
var targetUnitNormalized = targetUnit.toLowerCase();
if (!conversions[targetUnitNormalized]) {
throw new Error("Cannot convert to " + targetUnit);
}
if (!conversions[targetUnitNormalized][sourceUnitNormalized]) {
throw new Error("Cannot convert from " + sourceUnit + " to " + targetUnit);
}
var converted = conversions[targetUnitNormalized][sourceUnitNormalized] * value;
if (precision !== false) {
precision = Math.pow(10, parseInt(precision) || 5);
return Math.round(converted * precision) / precision;
}
return converted;
}
var _default = convertUnit;
exports.default = _default;
module.exports = exports.default;