2d.text.draw.generic.family.html (1724B)
1 <!DOCTYPE html> 2 <title>OffscreenCanvas test: 2d.text.draw.generic.family</title> 3 <script src="/resources/testharness.js"></script> 4 <script src="/resources/testharnessreport.js"></script> 5 <script src="/html/canvas/resources/canvas-tests.js"></script> 6 <script> 7 function drawCanvas(ctx, family) 8 { 9 ctx.font = '16px ' + family; 10 ctx.fillText(family, 0, 16); 11 } 12 13 function testDrawGenericFamily(family) 14 { 15 let offscreenCanvas = new OffscreenCanvas(88, 24); 16 let oCtx = offscreenCanvas.getContext('2d'); 17 drawCanvas(oCtx, family); 18 let canvas = document.createElement('canvas'); 19 let ctx = canvas.getContext('2d'); 20 drawCanvas(ctx, family); 21 22 let data1 = oCtx.getImageData(0, 0, 88, 24).data; 23 let data2 = ctx.getImageData(0, 0, 88, 24).data; 24 assert_array_equals(data1, data2, 25 "The image data generated by drawing generic font family '" + family + 26 "' should be the same for both OffscreenCanvas and regular canvas"); 27 } 28 29 test(function() { 30 testDrawGenericFamily('sans-serif'); 31 }, "Test that drawing sans-serif produces the same result between canvas and OffscreenCanvas"); 32 33 test(function() { 34 testDrawGenericFamily('serif'); 35 }, "Test that drawing serif produces the same result between canvas and OffscreenCanvas"); 36 37 test(function() { 38 testDrawGenericFamily('cursive'); 39 }, "Test that drawing cursive produces the same result between canvas and OffscreenCanvas"); 40 41 test(function() { 42 testDrawGenericFamily('fantasy'); 43 }, "Test that drawing fantasy produces the same result between canvas and OffscreenCanvas"); 44 45 test(function() { 46 testDrawGenericFamily('monospace'); 47 }, "Test that drawing monospace produces the same result between canvas and OffscreenCanvas"); 48 </script>