57 lines
1.3 KiB
JavaScript
57 lines
1.3 KiB
JavaScript
import padStart from 'lodash/padStart';
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export { findBreakpoints, messageHeight } from './messageHeight';
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export linkify from './linkify';
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export function normalizeChannel(channel) {
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if (channel.indexOf('#') !== 0) {
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return channel;
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}
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return channel.split('#').join('').toLowerCase();
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}
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export function timestamp(date = new Date()) {
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const h = padStart(date.getHours(), 2, '0');
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const m = padStart(date.getMinutes(), 2, '0');
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return `${h}:${m}`;
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}
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const canvas = document.createElement('canvas');
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const ctx = canvas.getContext('2d');
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export function stringWidth(str, font) {
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ctx.font = font;
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return ctx.measureText(str).width;
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}
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export function measureScrollBarWidth() {
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const outer = document.createElement('div');
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outer.style.visibility = 'hidden';
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outer.style.width = '100px';
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document.body.appendChild(outer);
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const widthNoScroll = outer.offsetWidth;
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outer.style.overflow = 'scroll';
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const inner = document.createElement('div');
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inner.style.width = '100%';
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outer.appendChild(inner);
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const widthWithScroll = inner.offsetWidth;
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outer.parentNode.removeChild(outer);
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return widthNoScroll - widthWithScroll;
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}
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export function find(arr, pred) {
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for (let i = 0; i < arr.length; i++) {
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if (pred(arr[i])) {
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return arr[i];
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}
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}
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return undefined;
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}
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