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How to draw Font Awesome Icons on an HTML canvas [Version <5]

How to draw Font Awesome characters (glyphs of icons) on html5 canvas? I am using an old version of Font Awesome.

How can I make out these drawn characters?

<script>

    var canvas = document.getElementById('myCanvas');
    var context = canvas.getContext('2d');
    context.font = '';
    context.fillText();

</script>

language: lang-html

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

<script>

    var canvas = document.getElementById('myCanvas');
    var context = canvas.getContext('2d');
    context.font = '';
    context.fillText();

</script>

language: lang-html

<canvas id="myCanvas" class="canvas" width="500" height="500" ></canvas>
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2 answers

enter image description here

Here's how to draw awsome font fonts on html5 canvas:

  • Link in Awesome font:

    <link rel="stylesheet" 
    href="https://maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css">

  • Set the context font to Awesome font:

    // set the canvas context font-size and font-face
context.font='14px FontAwesome';

  • Draw one of the characters in the Awesome font on the canvas:

    // specify the desired character code with the Unicode prefix (\u) 
context.fillText('\uF047',20,50);

Here is a sample code and a demo:

var canvas=document.getElementById("canvas");
var ctx=canvas.getContext("2d");

ctx.font='12px verdana';
ctx.fillText('Please wait for Font Awesome to load...',20,30);

// give font awesome time to load
setTimeout(start,2000);

function start(){
  ctx.clearRect(0,0,canvas.width,canvas.height);
  ctx.font='30px FontAwesome';
  ctx.fillText('\uF047',20,50);
}
body{ background-color: ivory; }
#canvas{border:1px solid red; margin:0 auto; }
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css">
<script src="https://code.jquery.com/jquery-2.1.1.min.js"></script>
<h4>Font Awesome glyph drawn onto html5 canvas</h4>
<canvas id="canvas" width=300 height=100></canvas>

[Addition: another way to download FontAwesome]

@Kaiido, FontAwesome, font-family:fontawesome ( ).

, ( FontAwesome) " ".

[: FontAwesome onload]

img, , , . imgs, .onload, , .

onloadound onload, , FontAwesome fillText :

<!doctype html>
<html>
<head>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css">
<script src="https://code.jquery.com/jquery-2.1.1.min.js"></script>
<style>
    body{ background-color: ivory; }
    #canvas{border:1px solid red; margin:0 auto; }
</style>
<script>
$(function(){

    var canvas=document.getElementById("canvas");
    var ctx=canvas.getContext("2d");
    var cw,ch;

    AwesomeFontOnload(start,3000);

    function start(){
        ctx.font='48px fontawesome';
        ctx.fillText('\uF064\uF065 \uF0a5',20,75);
    }

    function AwesomeFontOnload(callback,failAfterMS){
        var c=document.createElement("canvas");
        var cctx=c.getContext("2d");
        var ccw,cch;
        var fontsize=36;
        var testCharacter='\uF047';
        ccw=c.width=fontsize*1.5;
        cch=c.height=fontsize*1.5;
        cctx.font=fontsize+'px fontawesome';
        cctx.textAlign='center';
        cctx.textBaseline='middle';
        var startCount=pixcount();
        var t1=performance.now();
        var failtime=t1+failAfterMS;
        //
        requestAnimationFrame(fontOnload);
        //
        function fontOnload(time){
            var currentCount=pixcount();
            if(time>failtime){
                alert('Font Awsome failed to load after '+failAfterMS+'ms.');
            }else if(currentCount==startCount){
                requestAnimationFrame(fontOnload);
            }else{
                callback();
            }
        }
        //
        function pixcount(){
            cctx.clearRect(0,0,ccw,cch);
            cctx.fillText(testCharacter,ccw/2,cch/2);
            var data=cctx.getImageData(0,0,ccw,cch).data;
            var count=0;
            for(var i=3;i<data.length;i+=4){
                if(data[i]>10){count++;}
            }
            return(count);
        }
    }

}); // end $(function(){});
</script>
</head>
<body>
    <h4>Font Awesome glyphs drawn onto html5 canvas</h4>
    <canvas id="canvas" width=300 height=300></canvas>
</body>
</html>
+27

( Awesome) html-

font.sss , .

: , fa-info-circle,

.fa-info-circle:before {
  content: "\f05a";
}

, context.font = '\uf05a';// fa-info-circle. \u . FontAWsome

+3

Source: https://habr.com/ru/post/1630014/

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