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HTML5 Canvas - Text and Fonts
HTML5 canvas provides capabilities to create text using different font an dtext properties listed below:
SN | 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>
<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 onload="drawShape();">
<canvas id="mycanvas"></canvas>
</body>
</html>
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The above example would produce following result:
To learn above concept - Do Online Practice using latest version of either Safari or Opera.
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