canvas resolution adjustments

I've created a unique function that can transform text into an image by following this reference:

Convert Text to Image using javascript

<canvas id='textCanvas' height=20></canvas>
<img id='image'>
<br>
<textarea id='text'></textarea>

js

var tCtx = document.getElementById('textCanvas').getContext('2d'),
    imageElem = document.getElementById('image');

document.getElementById('text').addEventListener('keyup', function (){
    tCtx.canvas.width = tCtx.measureText(this.value).width;
    tCtx.fillText(this.value, 0, 10);
    imageElem.src = tCtx.canvas.toDataURL();
    console.log(imageElem.src);
}, false);

Check out the jsfiddle provided in the original post: http://jsfiddle.net/amaan/WxmQR/1/

However, it appears that the resolution is too low for practical use. How can I enhance the resolution in this scenario?

Answer №1

Remember to set context.font = ... prior to using context.fillText(...) in order to modify how text is displayed (as recommended by Darth)

canvas fillText() method

(I adjusted the canvas height to 200 for text accommodation and relocated the drawing position to 0, 100)

var tCtx = document.getElementById('textCanvas').getContext('2d'),
  imageElem = document.getElementById('image');

document.getElementById('text').addEventListener('input', function() {
  tCtx.canvas.width = tCtx.measureText(this.value).width;
  tCtx.font = "60px sans-serif"
  tCtx.fillText(this.value, 0, 100);
  imageElem.src = tCtx.canvas.toDataURL();
}, false);
<canvas id='textCanvas' height=200></canvas>
<img id='image'>
<br>
<textarea id='text'></textarea>

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