HTML5 Canvas - Text and Fonts


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HTML5 canvas provides capabilities to create text using different font and text properties listed below −

Sr.No. Property and Description
1 font [ = value ]

This property returns the current font settings and can be set, to change the font.

2 textAlign [ = value ]

This property returns the current text alignment settings and can be set, to change the alignment. The possible values are start, end, left, right, and center.

3 textBaseline [ = value ]

This property returns the current baseline alignment settings and can be set, to change the baseline alignment. The possible values are top, hanging, middle , alphabetic, ideographic and bottom

4 fillText(text, x, y [, maxWidth ] )

This property fills the given text at the given position indicated by the given coordinates x and y.

5 strokeText(text, x, y [, maxWidth ] )

This property strokes the given text at the given position indicated by the given coordinates x and y.

Example

Following is a simple example which makes use of above mentioned attributes to draw a text −

<!DOCTYPE HTML>
<html>
   <head>
   
      <style>
         #test {
            width: 100px;
            height:100px;
            margin: 0px auto;
         }
      </style>
      
      <script type="text/javascript">
         function drawShape(){
         
            // get the canvas element using the DOM
            var canvas = document.getElementById('mycanvas');
            
            // Make sure we don't execute when canvas isn't supported
            if (canvas.getContext){
            
               // use getContext to use the canvas for drawing
               var ctx = canvas.getContext('2d');
               
               ctx.fillStyle    = '#00F';
               ctx.font         = 'Italic 30px Sans-Serif';
               
               ctx.textBaseline = 'Top';
               ctx.fillText  ('Hello world!', 40, 100);
               
               ctx.font         = 'Bold 30px Sans-Serif';
               ctx.strokeText('Hello world!', 40, 50);
            }
            
            else {
               alert('You need Safari or Firefox 1.5+ to see this demo.');
            }
         }
      </script>
   </head>
   
   <body id="test" onload="drawShape();">
      <canvas id="mycanvas"></canvas>
   </body>
   
</html>

The above example would produce following result −


html5_canvas.htm