72 lines
1.9 KiB
JavaScript
72 lines
1.9 KiB
JavaScript
'use strict'
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var stringWidth = require('string-width')
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module.exports = TemplateItem
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function isPercent (num) {
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if (typeof num !== 'string') return false
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return num.slice(-1) === '%'
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}
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function percent (num) {
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return Number(num.slice(0, -1)) / 100
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}
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function TemplateItem (values, outputLength) {
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this.overallOutputLength = outputLength
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this.finished = false
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this.type = null
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this.value = null
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this.length = null
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this.maxLength = null
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this.minLength = null
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this.kerning = null
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this.align = 'left'
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this.padLeft = 0
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this.padRight = 0
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this.index = null
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this.first = null
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this.last = null
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if (typeof values === 'string') {
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this.value = values
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} else {
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for (var prop in values) this[prop] = values[prop]
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}
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// Realize percents
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if (isPercent(this.length)) {
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this.length = Math.round(this.overallOutputLength * percent(this.length))
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}
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if (isPercent(this.minLength)) {
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this.minLength = Math.round(this.overallOutputLength * percent(this.minLength))
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}
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if (isPercent(this.maxLength)) {
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this.maxLength = Math.round(this.overallOutputLength * percent(this.maxLength))
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}
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return this
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}
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TemplateItem.prototype = {}
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TemplateItem.prototype.getBaseLength = function () {
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var length = this.length
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if (length == null && typeof this.value === 'string' && this.maxLength == null && this.minLength == null) {
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length = stringWidth(this.value)
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}
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return length
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}
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TemplateItem.prototype.getLength = function () {
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var length = this.getBaseLength()
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if (length == null) return null
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return length + this.padLeft + this.padRight
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}
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TemplateItem.prototype.getMaxLength = function () {
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if (this.maxLength == null) return null
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return this.maxLength + this.padLeft + this.padRight
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}
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TemplateItem.prototype.getMinLength = function () {
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if (this.minLength == null) return null
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return this.minLength + this.padLeft + this.padRight
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}
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