test_2d.line.cap.closed.html

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<!DOCTYPE HTML>

<title>Canvas test: 2d.line.cap.closed</title>

<!-- Testing: Line caps are not drawn at the corners of an unclosed rectangle -->

<script src="/tests/SimpleTest/SimpleTest.js"></script>

<link rel="stylesheet" href="/tests/SimpleTest/test.css">

<body>

<canvas id="c" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas>

<script>

function isPixel(ctx, x,y, r,g,b,a, pos, colour, d) {

    var pixel = ctx.getImageData(x, y, 1, 1);

    var pr = pixel.data[0],

        pg = pixel.data[1],

        pb = pixel.data[2],

        pa = pixel.data[3];

    ok(r-d <= pr && pr <= r+d &&

       g-d <= pg && pg <= g+d &&

       b-d <= pb && pb <= b+d &&

       a-d <= pa && pa <= a+d,

       "pixel "+pos+" is "+pr+","+pg+","+pb+","+pa+"; expected "+colour+" +/- "+d);

SimpleTest.waitForExplicitFinish();

addLoadEvent(function () {

var canvas = document.getElementById('c');

var ctx = canvas.getContext('2d');

ctx.fillStyle = '#0f0';

ctx.strokeStyle = '#f00';

ctx.fillRect(0, 0, 100, 50);

ctx.lineJoin = 'bevel';

ctx.lineCap = 'square';

ctx.lineWidth = 400;

ctx.beginPath();

ctx.moveTo(200, 200);

ctx.lineTo(200, 1000);

ctx.lineTo(1000, 1000);

ctx.lineTo(1000, 200);

ctx.closePath();

ctx.stroke();

isPixel(ctx, 1,1, 0,255,0,255, "1,1", "0,255,0,255", 0);

isPixel(ctx, 48,1, 0,255,0,255, "48,1", "0,255,0,255", 0);

isPixel(ctx, 48,48, 0,255,0,255, "48,48", "0,255,0,255", 0);

isPixel(ctx, 1,48, 0,255,0,255, "1,48", "0,255,0,255", 0);

SimpleTest.finish();

});

</script>