canvas-txt v4.1.1

A Miniscule library to render text on HTML5 Canvas with ZERO dependencies

Features

• Multiline text
• Auto line breaks
• Horizontal Align
• Vertical Align
• Justify Align
• Easy Debugging
• Improved Performance

Demo

See Demo: Here

Install

yarn add canvas-txt

or

npm i canvas-txt

Usage

<canvas id="myCanvas" width="500" height="500"></canvas>

Bundler

import { drawText } from 'canvas-txt'

const c = document.getElementById('myCanvas')
const ctx = c.getContext('2d')

ctx.clearRect(0, 0, 500, 500)

const txt = 'Lorem ipsum dolor sit amet'

const { height } = drawText(ctx, txt, {
  x: 100,
  y: 200,
  width: 200,
  height: 200,
  fontSize: 24,
})

console.log(`Total height = ${height}`)

Node canvas

See Node js demo in ./src/node-test.ts

const { createCanvas } = require('canvas')
const { drawText } = require('canvas-txt')
const fs = require('fs')

// Or
// import { createCanvas } from 'canvas'
// import { drawText } from 'canvas-txt'
// import * as fs from 'fs'

function main() {
  const canvas = createCanvas(400, 400)
  const ctx = canvas.getContext('2d')
  const txt = 'Hello World!'

  const { height } = drawText(ctx, txt, {
    x: 100,
    y: 200,
    width: 200,
    height: 200,
    fontSize: 24,
  })

  // Convert the canvas to a buffer in PNG format
  const buffer = canvas.toBuffer('image/png')
  fs.writeFileSync('output.png', buffer)
  console.log(`Total height = ${height}`)
}

main()

CDN

See fiddle : https://jsfiddle.net/geongeorgek/n5xw3ufj/2/

<script src="//unpkg.com/canvas-txt"></script>

const { drawText, getTextHeight, splitText } = window.canvasTxt
/// ...remaining same

Properties

Methods

import { drawText, splitText, getTextHeight } from 'canvas-txt'