Wrap text on canvas

gistfile1.txt

 function wrapText(context, text, x, y, maxWidth, lineHeight) {
        var words = text.split(" ");
        var line = "";
        for(var n = 0; n < words.length; n++) {
          var testLine = line + words[n] + " ";
          var metrics = context.measureText(testLine);
          var testWidth = metrics.width;
          if(testWidth > maxWidth) {
            context.fillText(line, x, y);
            line = words[n] + " ";
            y += lineHeight;
          }
          else {
            line = testLine;
          }
        }
        context.fillText(line, x, y);        
    }