| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| <body> |
| <script> |
| var canvas = document.createElement("canvas"); |
| var context = canvas.getContext('2d'); |
| |
| function hex(number) |
| { |
| var hexDigits = "0123456789abcdef"; |
| return hexDigits[number >> 4] + hexDigits[number & 0xF]; |
| } |
| |
| function pixel() |
| { |
| var imageData = context.getImageData(0, 0, 1, 1); |
| return "#" + hex(imageData.data[0]) + hex(imageData.data[1]) + hex(imageData.data[2]); |
| } |
| |
| var black="#000000"; |
| var red = "#ff0000"; |
| var green = "#008000"; |
| |
| test(function(t) { |
| // (save set restore) |
| context.fillStyle = "black"; |
| context.fillRect(0, 0, 1, 1); |
| assert_equals(pixel(), black); |
| |
| context.save(); |
| context.fillStyle = "red"; |
| context.fillRect(0, 0, 1, 1); |
| assert_equals(pixel(), red); |
| |
| context.restore(); |
| context.fillRect(0, 0, 1, 1); |
| assert_equals(pixel(), black); |
| |
| // (save (save set restore) restore) |
| context.fillStyle = "black"; |
| context.fillRect(0, 0, 1, 1); |
| assert_equals(pixel(), black); |
| |
| context.save(); |
| |
| context.save(); |
| context.fillStyle = "red"; |
| context.fillRect(0, 0, 1, 1); |
| assert_equals(pixel(), red); |
| |
| context.restore(); |
| context.fillRect(0, 0, 1, 1); |
| assert_equals(pixel(), black); |
| |
| context.restore(); |
| context.fillRect(0, 0, 1, 1); |
| assert_equals(pixel(), black); |
| |
| // (save (save restore) set restore) |
| context.fillStyle = "black"; |
| context.fillRect(0, 0, 1, 1); |
| assert_equals(pixel(), black); |
| |
| context.save(); |
| context.restore(); |
| |
| context.save(); |
| context.fillStyle = "red"; |
| context.fillRect(0, 0, 1, 1); |
| assert_equals(pixel(), red); |
| |
| context.restore(); |
| context.fillRect(0, 0, 1, 1); |
| assert_equals(pixel(), black); |
| |
| // (save (save (save set restore) set (save set restore) restore) restore) |
| context.fillStyle = "black"; |
| context.fillRect(0, 0, 1, 1); |
| assert_equals(pixel(), black); |
| |
| context.save(); |
| context.fillRect(0, 0, 1, 1); |
| assert_equals(pixel(), black); |
| |
| context.save(); |
| context.fillStyle = "red"; |
| context.fillRect(0, 0, 1, 1); |
| assert_equals(pixel(), red); |
| |
| context.restore(); |
| context.fillRect(0, 0, 1, 1); |
| assert_equals(pixel(), black); |
| |
| context.fillStyle = "green"; |
| context.fillRect(0, 0, 1, 1); |
| assert_equals(pixel(), green); |
| |
| context.save(); |
| context.fillRect(0, 0, 1, 1); |
| assert_equals(pixel(), green); |
| |
| context.fillStyle = "red"; |
| context.fillRect(0, 0, 1, 1); |
| assert_equals(pixel(), red); |
| |
| context.restore(); |
| context.fillRect(0, 0, 1, 1); |
| assert_equals(pixel(), green); |
| |
| context.restore(); |
| context.fillRect(0, 0, 1, 1); |
| assert_equals(pixel(), black); |
| |
| context.restore(); |
| context.fillRect(0, 0, 1, 1); |
| assert_equals(pixel(), black); |
| |
| // (save (save set (save (save set restore) restore) set restore) restore) |
| context.fillStyle = "black"; |
| context.fillRect(0, 0, 1, 1); |
| assert_equals(pixel(), black); |
| |
| context.save(); |
| context.fillRect(0, 0, 1, 1); |
| assert_equals(pixel(), black); |
| |
| context.save(); |
| context.fillStyle = "red"; |
| context.fillRect(0, 0, 1, 1); |
| assert_equals(pixel(), red); |
| |
| context.save(); |
| context.fillRect(0, 0, 1, 1); |
| assert_equals(pixel(), red); |
| |
| context.save(); |
| context.fillStyle = "green"; |
| context.fillRect(0, 0, 1, 1); |
| assert_equals(pixel(), green); |
| |
| context.restore(); |
| context.fillRect(0, 0, 1, 1); |
| assert_equals(pixel(), red); |
| |
| context.restore(); |
| context.fillRect(0, 0, 1, 1); |
| assert_equals(pixel(), red); |
| |
| context.fillStyle = "green"; |
| context.fillRect(0, 0, 1, 1); |
| assert_equals(pixel(), green); |
| |
| context.restore(); |
| context.fillRect(0, 0, 1, 1); |
| assert_equals(pixel(), black); |
| |
| context.restore(); |
| context.fillRect(0, 0, 1, 1); |
| assert_equals(pixel(), black); |
| }, "Verfiy canvas save and restore correct behavior."); |
| </script> |
| </body> |
| </html> |
