136 lines
4.2 KiB
JavaScript
136 lines
4.2 KiB
JavaScript
'use strict'
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function Theme (default_theme = { background: '#222', f_high: '#fff', f_med: '#ccc', f_low: '#999', f_inv: '#fff', b_high: '#888', b_med: '#666', b_low: '#444', b_inv: '#000' }) {
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const themer = this
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this.el = document.createElement('style')
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this.el.type = 'text/css'
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this.callback
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this.active
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this.collection = {
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default: default_theme,
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noir: { background: '#222', f_high: '#fff', f_med: '#ccc', f_low: '#999', f_inv: '#fff', b_high: '#888', b_med: '#666', b_low: '#444', b_inv: '#000' },
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pale: { background: '#e1e1e1', f_high: '#000', f_med: '#777', f_low: '#fff', f_inv: '#000', b_high: '#eee', b_med: '#999', b_low: '#ccc', b_inv: '#fff' }
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}
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this.install = function (host = document.body, callback) {
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console.log('Theme', 'Installing..')
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host.appendChild(this.el)
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this.callback = callback
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}
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this.start = function () {
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console.log('Theme', 'Starting..')
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const storage = is_json(localStorage.theme) ? JSON.parse(localStorage.theme) : this.collection.default
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this.load(!storage.background ? this.collection.default : storage)
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}
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this.save = function (theme) {
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console.log('Theme', 'Saving..')
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this.active = theme
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localStorage.setItem('theme', JSON.stringify(theme))
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}
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this.load = function (theme, fall_back = this.collection.noir) {
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if (!theme || !theme.background) { console.warn('Theme', 'Not a theme', theme); return }
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this.save(theme)
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this.apply(theme)
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if (this.callback) {
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this.callback()
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}
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}
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this.apply = function (theme) {
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this.el.innerHTML = `
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:root {
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--background: ${theme.background};
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--f_high: ${theme.f_high};
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--f_med: ${theme.f_med};
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--f_low: ${theme.f_low};
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--f_inv: ${theme.f_inv};
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--b_high: ${theme.b_high};
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--b_med: ${theme.b_med};
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--b_low: ${theme.b_low};
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--b_inv: ${theme.b_inv};
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}`
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}
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this.parse = function (any) {
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if (any && any.background) { return any } else if (any && any.data) { return any.data } else if (any && is_json(any)) { return JSON.parse(any) } else if (any && is_html(any)) { return this.extract(any) }
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return null
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}
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this.extract = function (text) {
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const svg = new DOMParser().parseFromString(text, 'text/xml')
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try {
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return {
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'background': svg.getElementById('background').getAttribute('fill'),
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'f_high': svg.getElementById('f_high').getAttribute('fill'),
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'f_med': svg.getElementById('f_med').getAttribute('fill'),
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'f_low': svg.getElementById('f_low').getAttribute('fill'),
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'f_inv': svg.getElementById('f_inv').getAttribute('fill'),
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'b_high': svg.getElementById('b_high').getAttribute('fill'),
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'b_med': svg.getElementById('b_med').getAttribute('fill'),
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'b_low': svg.getElementById('b_low').getAttribute('fill'),
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'b_inv': svg.getElementById('b_inv').getAttribute('fill')
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}
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} catch (err) {
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console.warn('Theme', 'Incomplete SVG Theme', err)
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}
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}
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this.reset = function () {
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this.load(this.collection.default)
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}
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// Defaults
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this.pale = function () {
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this.load(this.collection.pale)
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}
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this.noir = function () {
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this.load(this.collection.noir)
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}
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this.invert = function () {
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this.load(this.active.background == this.collection.noir.background ? this.collection.pale : this.collection.noir)
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}
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// Drag
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this.drag = function (e) {
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e.stopPropagation()
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e.preventDefault()
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e.dataTransfer.dropEffect = 'copy'
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}
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this.drop = function (e) {
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e.preventDefault()
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e.stopPropagation()
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const file = e.dataTransfer.files[0]
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if (!file || !file.name) { console.warn('Theme', 'Unnamed file.'); return }
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if (file.name.indexOf('.thm') < 0 && file.name.indexOf('.svg') < 0) { console.warn('Theme', 'Skipped, not a theme'); return }
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const reader = new FileReader()
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reader.onload = function (e) {
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themer.load(themer.parse(e.target.result))
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}
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reader.readAsText(file)
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}
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window.addEventListener('dragover', this.drag)
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window.addEventListener('drop', this.drop)
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function is_json (text) { try { JSON.parse(text); return true } catch (error) { return false } }
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function is_html (text) { try { new DOMParser().parseFromString(text, 'text/xml'); return true } catch (error) { return false } }
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}
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