tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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test_2d.fillText.gradient.html (2471B)


      1 <!DOCTYPE HTML>
      2 <title>Canvas test: 2d.composite.canvas.xor</title>
      3 <script src="/tests/SimpleTest/SimpleTest.js"></script>
      4 <link rel="stylesheet" href="/tests/SimpleTest/test.css">
      5 <body>
      6 <canvas id="c" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas>
      7 <script>
      8 function isPixel(ctx, x,y, r,g,b,a, pos, colour, d) {
      9    var pixel = ctx.getImageData(x, y, 1, 1);
     10    var pr = pixel.data[0],
     11        pg = pixel.data[1],
     12        pb = pixel.data[2],
     13        pa = pixel.data[3];
     14    ok(r-d <= pr && pr <= r+d &&
     15       g-d <= pg && pg <= g+d &&
     16       b-d <= pb && pb <= b+d &&
     17       a-d <= pa && pa <= a+d,
     18       "pixel "+pos+" is "+pr+","+pg+","+pb+","+pa+"; expected "+colour+" +/- "+d);
     19 }
     20 
     21 SimpleTest.waitForExplicitFinish();
     22 addLoadEvent(function () {
     23 
     24 var canvas = document.getElementById('c');
     25 var ctx = canvas.getContext('2d');
     26                                var text                = "I";
     27                                var colorTop    = 'rgba(255,0,0,1)';
     28                                var colorBottom = 'rgba(0,255,0,1)';
     29                                var inset               = 10;
     30                                var grad                = ctx.createLinearGradient(inset, inset, inset, inset + 30);
     31                                
     32                                // add color stops
     33                                grad.addColorStop(0, colorTop);
     34                                grad.addColorStop(1, colorBottom);
     35                                
     36                                ctx.fillStyle               = grad;
     37                                ctx.textBaseline    = 'top';
     38                                ctx.font                    = '110px sans-serif'
     39                                ctx.fillText(text, -10, -20);
     40                                ctx.fillText(text, -8, -20);
     41                                ctx.fillText(text, -6, -20);
     42                                ctx.fillText(text, -4, -20);
     43                                ctx.fillText(text, -2, -20);
     44                                ctx.fillText(text, 0, -20);
     45                                ctx.fillText(text, 2, -20);
     46                                ctx.fillText(text, 4, -20);
     47                                ctx.fillText(text, 6, -20);
     48 
     49                                isPixel(ctx, 15,0, 255,0,0,255, "15,0", "255,0,0,255", 5);
     50                                isPixel(ctx, 15,49, 0,255,0,255, "15,49", "0,255,0,255", 5);
     51 SimpleTest.finish();
     52 
     53 });
     54 </script>