| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| <body> |
| <script> |
| |
| function getColor(x,y) { |
| return ctx.getImageData(x, y, 1, 1).data; |
| } |
| |
| var canvas = document.createElement('canvas'); |
| canvas.width = 300; |
| canvas.height = 300; |
| var ctx = canvas.getContext('2d'); |
| |
| // Test no drawing cases |
| ctx.fillStyle = 'green'; |
| ctx.strokeStyle = 'red'; |
| ctx.lineWidth = 50; |
| |
| |
| test(function(t) { |
| ctx.beginPath(); |
| ctx.fillRect(0, 0, 100, 100); |
| ctx.lineTo(50, 50); |
| ctx.stroke(); |
| assert_array_equals(getColor(40,40), [0,128,0,255]); |
| ctx.clearRect(0, 0, 300, 300); |
| |
| // Test when create rectangle path using a rectangle with width = height = 0. |
| |
| ctx.strokeStyle = 'red'; |
| ctx.lineWidth = 10; |
| ctx.beginPath(); |
| ctx.rect(0, 0, 0, 0); |
| ctx.stroke(); |
| assert_array_equals(getColor(1,1), [0,0,0,0]); |
| ctx.clearRect(0, 0, 300, 300); |
| |
| // Test path modifications that result in drawing |
| ctx.fillStyle = 'red'; |
| ctx.strokeStyle = 'green'; |
| |
| |
| ctx.beginPath(); |
| ctx.fillRect(0, 0, 100, 100); |
| ctx.lineTo(0, 50); |
| ctx.lineTo(100, 50); |
| ctx.stroke(); |
| assert_array_equals(getColor(0,0), [255,0,0,255]); |
| assert_array_equals(getColor(50,50), [0,128,0,255]); |
| ctx.clearRect(0, 0, 300, 300); |
| |
| |
| ctx.beginPath(); |
| ctx.fillRect(0, 0, 100, 100); |
| ctx.quadraticCurveTo(0, 50, 100, 50); |
| ctx.stroke(); |
| assert_array_equals(getColor(10,10), [255,0,0,255]); |
| assert_array_equals(getColor(50,50), [0,128,0,255]); |
| ctx.clearRect(0, 0, 300, 300); |
| |
| |
| ctx.beginPath(); |
| ctx.fillRect(0, 0, 100, 100); |
| ctx.quadraticCurveTo(0, 50, 100, 50); |
| ctx.lineTo(50, 100); |
| ctx.stroke(); |
| assert_array_equals(getColor(10,10), [255,0,0,255]); |
| assert_array_equals(getColor(99,51), [0,128,0,255]); |
| assert_array_equals(getColor(50,50), [0,128,0,255]); |
| ctx.clearRect(0, 0, 300, 300); |
| |
| |
| ctx.beginPath(); |
| ctx.fillRect(0, 0, 100, 100); |
| ctx.bezierCurveTo(0, 50, 50, 50, 100, 50); |
| ctx.stroke(); |
| assert_array_equals(getColor(10,10), [255,0,0,255]); |
| assert_array_equals(getColor(50,50), [0,128,0,255]); |
| ctx.clearRect(0, 0, 300, 300); |
| |
| |
| ctx.beginPath(); |
| ctx.fillRect(0, 0, 100, 100); |
| ctx.bezierCurveTo(0, 50, 50, 50, 100, 50); |
| ctx.stroke(); |
| ctx.lineTo(50, 100); |
| ctx.stroke(); |
| assert_array_equals(getColor(10,10), [255,0,0,255]); |
| assert_array_equals(getColor(99,51), [0,128,0,255]); |
| assert_array_equals(getColor(50,50), [0,128,0,255]); |
| ctx.clearRect(0, 0, 300, 300); |
| |
| }, "This tests behaviour of path modification APIs on an empty path."); |
| </script> |
| </body> |
