test_2d.gradient.radial.cone.shape2.html (2310B)
1 <!DOCTYPE HTML> 2 <title>Canvas test: 2d.gradient.radial.cone.shape2</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 function todo_isPixel(ctx, x,y, r,g,b,a, pos, colour, d) { 21 var pixel = ctx.getImageData(x, y, 1, 1); 22 var pr = pixel.data[0], 23 pg = pixel.data[1], 24 pb = pixel.data[2], 25 pa = pixel.data[3]; 26 todo(r-d <= pr && pr <= r+d && 27 g-d <= pg && pg <= g+d && 28 b-d <= pb && pb <= b+d && 29 a-d <= pa && pa <= a+d, 30 "pixel "+pos+" is "+pr+","+pg+","+pb+","+pa+"; expected "+colour+" +/- "+d); 31 } 32 33 SimpleTest.waitForExplicitFinish(); 34 addLoadEvent(function () { 35 36 var canvas = document.getElementById('c'); 37 var ctx = canvas.getContext('2d'); 38 39 var tol = 1; // tolerance to avoid antialiasing artifacts 40 41 ctx.fillStyle = '#0f0'; 42 ctx.fillRect(0, 0, 100, 50); 43 44 var g = ctx.createRadialGradient(30+10*5/2, 40, 10*3/2, 30+10*15/4, 40, 10*9/4); 45 g.addColorStop(0, '#f00'); 46 g.addColorStop(1, '#f00'); 47 ctx.fillStyle = g; 48 ctx.fillRect(0, 0, 100, 50); 49 50 ctx.fillStyle = '#0f0'; 51 ctx.beginPath(); 52 ctx.moveTo(30-tol, 40); 53 ctx.lineTo(110, -20-tol); 54 ctx.lineTo(110, 100+tol); 55 ctx.fill(); 56 57 isPixel(ctx, 1,1, 0,255,0,255, "1,1", "0,255,0,255", 0); 58 isPixel(ctx, 50,1, 0,255,0,255, "50,1", "0,255,0,255", 0); 59 isPixel(ctx, 98,1, 0,255,0,255, "98,1", "0,255,0,255", 0); 60 isPixel(ctx, 1,25, 0,255,0,255, "1,25", "0,255,0,255", 0); 61 isPixel(ctx, 50,25, 0,255,0,255, "50,25", "0,255,0,255", 0); 62 isPixel(ctx, 98,25, 0,255,0,255, "98,25", "0,255,0,255", 0); 63 isPixel(ctx, 1,48, 0,255,0,255, "1,48", "0,255,0,255", 0); 64 isPixel(ctx, 50,48, 0,255,0,255, "50,48", "0,255,0,255", 0); 65 isPixel(ctx, 98,48, 0,255,0,255, "98,48", "0,255,0,255", 0); 66 67 SimpleTest.finish(); 68 69 }); 70 </script>