Learn html - html tutorial - Textbaseline property in html5 canvas - html examples - html programs
- The textBaseline property is one of the canvas property.
- The textBaseline property is used to sets or returns to draw the current text baseline.
Syntax for textBaseline Property in HTML5 Canvas:
Context.textBaseline="alphabetic | top | hanging | middle | ideographic | bottom";
Property values for textBaseline Property in HTML5 Canvas:
| Values |
Description |
| alphabetic |
The alphabetic baseline is the normal text baseline |
| top |
The text baseline is the top of the em square |
| hanging |
The text baseline is the hanging baseline |
| middle |
The text baseline is the middle of the em square |
| ideographic |
The text baseline is the ideographic baseline |
| bottom |
The text baseline is the bottom of the bounding box |
Sample Coding for textBaseline Property in HTML5 Canvas:
Tryit<!DOCTYPE html>
<html>
<head>
<title>wikitechy-HTML Canvas textBaseline</title>
</head>
<body>
<h1>wikitechy-HTML Canvas textBaseline with example:</h1>
<canvas id="wikitechyCanvas" width="600" height="300" style="border:1px
solid #d3d3d3;">
</canvas>
<script>
var d = document.getElementById("wikitechyCanvas") ;
var del = d.getContext("2d") ;
del.strokeStyle = "blue";
del.moveTo(30, 150);
del.lineTo(550, 150);
del.stroke();
del.font = "25px Times New Roman";
del.textBaseline = "top";
del.fillText("Top", 30, 150);
del.textBaseline = "bottom";
del.fillText("Bottom", 100, 150);
del.textBaseline = "middle";
del.fillText("Middle", 200, 150);
del.textBaseline = "alphabetic";
del.fillText("Alphabetic", 300, 150);
del.textBaseline = "hanging";
del.fillText("Hanging", 420, 150);
</script>
</body>
</html>
Code Explanation for textBaseline Property in HTML5 Canvas:
- “Wikitechy canvas” is used to declare the id value of the canvas tag.
- getElementById() method is used to draw the element from id.
- getContext() returns an object that provides methods and properties for drawing on the canvas.
- strokeStyle property is used to set the blue color path.
- The moveTo() method is used to set the starting point at (30, 150) in (x,y) direction.
- The lineTo() method is used to set the ending point at (550, 150) in (x,y) direction.
- stroke() method is used to draw the actually path.
- font property is used to set the font size is 25px Times New Roman.
- Top: The text baseline is top to fill the text is (30, 150) in (x,y) direction.
- Bottom:The text baseline is to fill the text is (100, 150) in (x,y) direction.
- Middle:The text baseline is middle to fill the text is (200, 150) in (x,y) direction.
- Alphabetic:The alphabetic baseline is normal baseLine, to fill the text is (300, 150) in (x,y) direction.
- Hanging:The text baseline is hanging to fill the text is (420, 150) in (x,y) direction.
- fillText() method is used to draw the actual position on the text.
Output for textBaseline Property in HTML5 Canvas:
- canvas is used to draw a rectangle an textbaseline.
- Here the output will be displays blue color baseline.
- The texts are displays with Middle of the baseline font in “25px Times New Roman”.
- The texts are displays with Top of the baseline font in “25px Times New Roman”.
- The texts are displays with Bottom of the baseline font in “25px Times New Roman”.
- The texts are displays with Alphabetic of the baseline font in “25px Times New Roman”.
- The texts are displays with Hanging of the baseline font in “25px Times New Roman”.
Browser Support for textBaseline Property in HTML5 Canvas:
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