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https://github.com/web-platform-tests/wpt
26 December 2018, 22:31:15 UTC
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Tip revision: 8d877aacda3215c8ef53f1bb787c7c1d1b5d2fe5 authored by Fredrik Söderquist on 07 November 2018, 09:00:38 UTC
Recognize 'optimizespeed' and 'optimizequality' for 'image-rendering'
Tip revision: 8d877aa
canvas_linestyles_linecap_001.htm 
<!doctype HTML>
<html>
    <head>
        <title>HTML5 Canvas Test: "square" lineCap</title>
        <link rel="match" href="canvas_linestyles_linecap_001-ref.htm">
        <link rel="author" title="Microsoft" href="http://www.microsoft.com" />
        <link rel="help" href="http://www.w3.org/TR/2dcontext/#dom-context-2d-linecap" />
        <meta name="assert" content="The square value of lineCap means that a rectangle with the length of the line width and the width of half the line width, placed flat against the edge perpendicular to the direction of the line, must be added at the end of each line." />
        <script type="text/javascript">
            function runTest()
            {
                var canvas = document.getElementById("canvas1");
                var ctx = canvas.getContext("2d");

                // Draw the first red rectangle.
                ctx.fillStyle ="rgba(255, 0, 0, 1.0)";
                ctx.fillRect(75, 0, 25, 50);

                // Draw second red rectangle.
                ctx.fillRect(0, 0, 25, 50);

                // Draw a line with square lineCap.
                ctx.strokeStyle = "rgba(0, 0, 0, 1.0)";
                ctx.lineWidth = 50;
                ctx.lineCap = "square";
                ctx.beginPath();
                ctx.moveTo(25, 25);
                ctx.lineTo(75, 25);
                ctx.stroke();
            }
        </script>
    </head>
    <body onload="runTest()">
        <p>Description: The square value of lineCap means that a rectangle with the length of the line width and the width of half the line width, placed flat against the edge perpendicular to the direction of the line, must be added at the end of each line.</p>
        <canvas id="canvas1" width="300" height="150">Browser does not support HTML5 Canvas.</canvas>
    </body>
</html>
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