<!DOCTYPE html >
<html >
<head >
<meta charset="utf-8" >
</head >
<body >
<script type="text/javascript" >
var testFont = '40px sans-serif' ;
function test(x, y, text, style , rotation) {
var canvas = document.createElement("canvas" );
canvas .width = 400 ;
canvas .height = 400 ;
canvas .style .cssText = 'position:absolute;' + style ;
document.getElementsByTagName('body' )[0 ].appendChild(canvas );
var ctx = canvas .getContext('2d' );
ctx.globalAlpha = 0 .5 ;
ctx.beginPath();
ctx.moveTo(x - 20 , y); ctx.lineTo(x + 20 , y);
ctx.moveTo(x, y - 20 ); ctx.lineTo(x, y + 20 );
ctx.stroke();
ctx.globalAlpha = 1 .0 ;
ctx.font = testFont;
if (rotation != 0 ) {
ctx.translate(x,y);
ctx.rotate(rotation);
ctx.translate(-x,-y);
}
ctx.fillText(text, x, y);
}
// Testcase: vertical text with orientation:sideways-right
// test(100 , 50 , 'Hello' , 'writing-mode:vertical-lr;text-orientation:sideways-right' , 0 );
// Reference: horizontal text with 90 ° rotation
// test(100 , 50 , 'Hello' , 'writing-mode:horizontal-tb' , Math.PI/2 );
// Non-reference: vertical text with orientation:mixed
test(100 , 50 , 'Hello' , 'writing-mode:vertical-lr;text-orientation:mixed' , 0 );
</script >
Messung V0.5 in Prozent C=98 H=100 G=98
¤ Dauer der Verarbeitung: 0.15 Sekunden
(vorverarbeitet am 2026-06-04)
¤
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