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<!DOCTYPE HTML>
<title>Canvas test: 2d.fill.pattern.imageSmoothingEnabled</title>
<!-- Testing: That imageSmoothingEnabled is taken into account when doing pattern fills-->
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" href="/tests/SimpleTest/test.css">
<body>
<canvas id="c" width="128" height="128"><p class="fallback">FAIL (fallback content)</p></canvas>
<img id="img">
<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);
}

function isNotPixel(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+"; did not expect "+colour+" +/- "+d);
}

SimpleTest.waitForExplicitFinish();
addLoadEvent(function () {

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

var img = document.getElementById("img");
img.src = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg==";

img.onload = function () {
  ctx.imageSmoothingEnabled = false;
  ctx.save();
  ctx.fillRect(0, 0, canvas.width, canvas.height);
  ctx.scale(16, 16);
  ctx.fillStyle = ctx.createPattern(img, 'no-repeat');
  ctx.fillRect(0, 0, 8, 8);
  ctx.restore();

  // Check for nearest filtering.
  isPixel(ctx, 0,0, 0,0,0,255, "0,0", "0,0,0,255", 0);
  isPixel(ctx, 14,14, 0,0,0,255, "14,14", "0,0,0,255", 0);
  isPixel(ctx, 15,15, 0,0,0,255, "15,15", "0,0,0,255", 0);
  isPixel(ctx, 16,16, 255,0,0,255, "16,16", "255,0,0,255", 0);

  ctx.imageSmoothingEnabled = true;
  ctx.save();
  ctx.fillRect(0, 0, canvas.width, canvas.height);
  ctx.scale(16, 16);
  ctx.fillStyle = ctx.createPattern(img, 'no-repeat');
  ctx.fillRect(0, 0, 8, 8);
  ctx.restore();

  // Check that nearest filtering is not happening.
  isPixel(ctx, 0,0, 0,0,0,255, "0,0", "0,0,0,255", 0);
  isNotPixel(ctx, 14,14, 0,0,0,255, "14,14", "0,0,0,255", 0);
  isNotPixel(ctx, 15,15, 0,0,0,255, "15,15", "0,0,0,255", 0);
  isNotPixel(ctx, 16,16, 255,0,0,255, "16,16", "255,0,0,255", 0);
  isPixel(ctx, 32,32, 255,0,0,255, "32,32", "255,0,0,255", 0);
  SimpleTest.finish();
}

});
</script>