| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| <body> |
| <script> |
| test(function(t) { |
| var ctx = document.createElement('canvas').getContext('2d'); |
| |
| var matrix = ctx.currentTransform; |
| assert_equals(matrix.a, 1); |
| assert_equals(matrix.b, 0); |
| assert_equals(matrix.c, 0); |
| assert_equals(matrix.d, 1); |
| assert_equals(matrix.e, 0); |
| assert_equals(matrix.f, 0); |
| |
| function setCurrentTransform(ctx, a, b, c, d, e, f) |
| { |
| matrix.a = a; |
| matrix.b = b; |
| matrix.c = c; |
| matrix.d = d; |
| matrix.e = e; |
| matrix.f = f; |
| ctx.currentTransform = matrix; |
| matrix.a = NaN; |
| matrix.b = NaN; |
| matrix.c = NaN; |
| matrix.d = NaN; |
| matrix.e = NaN; |
| matrix.f = NaN; |
| matrix = ctx.currentTransform; |
| assert_equals(matrix.a, a); |
| assert_equals(matrix.b, b); |
| assert_equals(matrix.c, c); |
| assert_equals(matrix.d, d); |
| assert_equals(matrix.e, e); |
| assert_equals(matrix.f, f); |
| } |
| |
| matrix.a = 2; |
| |
| assert_equals(ctx.currentTransform.a, 1); |
| assert_equals(ctx.currentTransform.b, 0); |
| assert_equals(ctx.currentTransform.c, 0); |
| assert_equals(ctx.currentTransform.d, 1); |
| assert_equals(ctx.currentTransform.e, 0); |
| assert_equals(ctx.currentTransform.f, 0); |
| |
| |
| ctx.beginPath(); |
| ctx.scale(0.5, 0.5); |
| matrix = ctx.currentTransform; |
| assert_equals(matrix.a, 0.5); |
| assert_equals(matrix.b, 0); |
| assert_equals(matrix.c, 0); |
| assert_equals(matrix.d, 0.5); |
| assert_equals(matrix.e, 0); |
| assert_equals(matrix.f, 0); |
| setCurrentTransform(ctx, 1, 0, 0, 1, 0, 0); |
| ctx.fillStyle = 'green'; |
| ctx.fillRect(0, 0, 100, 100); |
| |
| var imageData = ctx.getImageData(1, 1, 98, 98); |
| var imgdata = imageData.data; |
| assert_equals(imgdata[4], 0); |
| assert_equals(imgdata[5], 128); |
| assert_equals(imgdata[6], 0); |
| |
| |
| ctx.beginPath(); |
| ctx.rect(0,0,100,100); |
| ctx.save(); |
| setCurrentTransform(ctx, 0.5, 0, 0, 0.5, 10, 10); |
| ctx.fillStyle = 'red'; |
| ctx.fillRect(0, 0, 100, 100); |
| ctx.restore(); |
| matrix = ctx.currentTransform; |
| assert_equals(matrix.a, 1); |
| assert_equals(matrix.b, 0); |
| assert_equals(matrix.c, 0); |
| assert_equals(matrix.d, 1); |
| assert_equals(matrix.e, 0); |
| assert_equals(matrix.f, 0); |
| ctx.fillStyle = 'green'; |
| ctx.fillRect(0, 0, 100, 100); |
| |
| imageData = ctx.getImageData(1, 1, 98, 98); |
| imgdata = imageData.data; |
| assert_equals(imgdata[4], 0); |
| assert_equals(imgdata[5], 128); |
| assert_equals(imgdata[6], 0); |
| |
| |
| ctx.beginPath(); |
| ctx.fillStyle = 'green'; |
| ctx.save(); |
| setCurrentTransform(ctx, 0.5, 0, 0, 0.5, 0, 0); |
| ctx.fillStyle = 'red'; |
| ctx.fillRect(0, 0, 100, 100); |
| ctx.restore(); |
| matrix = ctx.currentTransform; |
| assert_equals(matrix.a, 1); |
| assert_equals(matrix.b, 0); |
| assert_equals(matrix.c, 0); |
| assert_equals(matrix.d, 1); |
| assert_equals(matrix.e, 0); |
| assert_equals(matrix.f, 0); |
| ctx.fillRect(0, 0, 100, 100); |
| |
| imageData = ctx.getImageData(1, 1, 98, 98); |
| imgdata = imageData.data; |
| assert_equals(imgdata[4], 0); |
| assert_equals(imgdata[5], 128); |
| assert_equals(imgdata[6], 0); |
| |
| |
| ctx.beginPath(); |
| ctx.fillStyle = 'green'; |
| ctx.fillRect(0, 0, 100, 100); |
| setCurrentTransform(ctx, 0, 0, 0, 0, 0, 0); |
| ctx.fillStyle = 'red'; |
| ctx.fillRect(0, 0, 100, 100); |
| |
| imageData = ctx.getImageData(1, 1, 98, 98); |
| imgdata = imageData.data; |
| assert_equals(imgdata[4], 0); |
| assert_equals(imgdata[5], 128); |
| assert_equals(imgdata[6], 0); |
| |
| |
| ctx.beginPath(); |
| ctx.resetTransform(); |
| matrix = ctx.currentTransform; |
| assert_equals(matrix.a, 1); |
| assert_equals(matrix.b, 0); |
| assert_equals(matrix.c, 0); |
| assert_equals(matrix.d, 1); |
| assert_equals(matrix.e, 0); |
| assert_equals(matrix.f, 0); |
| ctx.save(); |
| setCurrentTransform(ctx, 0, 0, 0, 0, 0, 0); |
| ctx.fillStyle = 'red'; |
| ctx.fillRect(0, 0, 100, 100); |
| ctx.restore(); |
| matrix = ctx.currentTransform; |
| assert_equals(matrix.a, 1); |
| assert_equals(matrix.b, 0); |
| assert_equals(matrix.c, 0); |
| assert_equals(matrix.d, 1); |
| assert_equals(matrix.e, 0); |
| assert_equals(matrix.f, 0); |
| ctx.fillStyle = 'blue'; |
| ctx.fillRect(0, 0, 100, 100); |
| |
| imageData = ctx.getImageData(1, 1, 98, 98); |
| imgdata = imageData.data; |
| assert_equals(imgdata[4], 0); |
| assert_equals(imgdata[5], 0); |
| assert_equals(imgdata[6], 255); |
| |
| ctx.beginPath(); |
| ctx.fillStyle = 'red'; |
| ctx.fillRect(0, 0, 100, 100); |
| setCurrentTransform(ctx, 0, 0, 0, 0, 0, 0); |
| ctx.fillStyle = 'green'; |
| ctx.fillRect(0, 0, 100, 100); |
| setCurrentTransform(ctx, 1, 0, 0, 1, 0, 0); |
| ctx.fillStyle = 'blue'; |
| ctx.fillRect(0, 0, 100, 100); |
| |
| imageData = ctx.getImageData(1, 1, 98, 98); |
| imgdata = imageData.data; |
| assert_equals(imgdata[4], 0); |
| assert_equals(imgdata[5], 0); |
| assert_equals(imgdata[6], 255); |
| |
| setCurrentTransform(ctx, 1, 0, 0, 1, 1, 2); |
| ctx.scale(0, 0); |
| matrix = ctx.currentTransform; |
| assert_equals(matrix.a, 0); |
| assert_equals(matrix.b, 0); |
| assert_equals(matrix.c, 0); |
| assert_equals(matrix.d, 0); |
| assert_equals(matrix.e, 1); |
| assert_equals(matrix.f, 2); |
| setCurrentTransform(ctx, 1, 0, 0, 1, 0, 0); |
| |
| // throws: TypeError: Failed to set the \'currentTransform\' property on \'CanvasRenderingContext2D\': The provided value is not of type \'SVGMatrix\'. |
| assert_throws(new TypeError(), function() { |
| ctx.currentTransform = ctx; |
| }); |
| // throws: TypeError: Failed to set the \'currentTransform\' property on \'CanvasRenderingContext2D\': The provided value is not of type \'SVGMatrix\'. |
| assert_throws(new TypeError(), function() { |
| ctx.currentTransform = undefined; |
| }); |
| // throws: TypeError: Failed to set the \'currentTransform\' property on \'CanvasRenderingContext2D\': The provided value is not of type \'SVGMatrix\'. |
| assert_throws(new TypeError(), function() { |
| ctx.currentTransform = null; |
| }); |
| |
| ctx.fillStyle = 'red'; |
| ctx.fillRect(0, 0, 100, 100); |
| |
| function setCurrentTransformToNonfinite(parameters) |
| { |
| ctx = parameters[0]; |
| matrix.a = parameters[1]; |
| matrix.b = parameters[2]; |
| matrix.c = parameters[3]; |
| matrix.d = parameters[4]; |
| matrix.e = parameters[5]; |
| matrix.f = parameters[6]; |
| ctx.currentTransform = matrix; |
| matrix.a = NaN; |
| matrix.b = NaN; |
| matrix.c = NaN; |
| matrix.d = NaN; |
| matrix.e = NaN; |
| matrix.f = NaN; |
| matrix = ctx.currentTransform; |
| assert_equals(matrix.a, 1); |
| assert_equals(matrix.b, 0); |
| assert_equals(matrix.c, 0); |
| assert_equals(matrix.d, 1); |
| assert_equals(matrix.e, 100); |
| assert_equals(matrix.f, 10); |
| } |
| |
| ctx.translate(100, 10); |
| matrix = ctx.currentTransform; |
| assert_equals(matrix.a, 1); |
| assert_equals(matrix.b, 0); |
| assert_equals(matrix.c, 0); |
| assert_equals(matrix.d, 1); |
| assert_equals(matrix.e, 100); |
| assert_equals(matrix.f, 10); |
| |
| testScenarios = [ |
| ['Case 1' , [ctx, Infinity, 0, 0, 0, 0, 0]], |
| ['Case 2' , [ctx, -Infinity, 0, 0, 0, 0, 0]], |
| ['Case 3' , [ctx, NaN, 0, 0, 0, 0, 0]], |
| ['Case 4' , [ctx, 0, Infinity, 0, 0, 0, 0]], |
| ['Case 5' , [ctx, 0, -Infinity, 0, 0, 0, 0]], |
| ['Case 6' , [ctx, 0, NaN, 0, 0, 0, 0]], |
| ['Case 7' , [ctx, 0, 0, Infinity, 0, 0, 0]], |
| ['Case 8' , [ctx, 0, 0, -Infinity, 0, 0, 0]], |
| ['Case 9' , [ctx, 0, 0, NaN, 0, 0, 0]], |
| ['Case 10' , [ctx, 0, 0, 0, Infinity, 0, 0]], |
| ['Case 11' , [ctx, 0, 0, 0, -Infinity, 0, 0]], |
| ['Case 12' , [ctx, 0, 0, 0, NaN, 0, 0]], |
| ['Case 13' , [ctx, 0, 0, 0, 0, Infinity, 0]], |
| ['Case 14' , [ctx, 0, 0, 0, 0, -Infinity, 0]], |
| ['Case 15' , [ctx, 0, 0, 0, 0, NaN, 0]], |
| ['Case 16' , [ctx, 0, 0, 0, 0, 0, Infinity]], |
| ['Case 17' , [ctx, 0, 0, 0, 0, 0, -Infinity]], |
| ['Case 18' , [ctx, 0, 0, 0, 0, 0, NaN]], |
| ['Case 19' , [ctx, Infinity, Infinity, 0, 0, 0, 0]], |
| ['Case 20' , [ctx, Infinity, Infinity, Infinity, 0, 0, 0]], |
| ['Case 21' , [ctx, Infinity, Infinity, Infinity, Infinity, 0, 0]], |
| ['Case 22' , [ctx, Infinity, Infinity, Infinity, Infinity, Infinity, 0]], |
| ['Case 23' , [ctx, Infinity, Infinity, Infinity, Infinity, Infinity, Infinity]], |
| ['Case 24' , [ctx, Infinity, Infinity, Infinity, Infinity, 0, Infinity]], |
| ['Case 25' , [ctx, Infinity, Infinity, Infinity, 0, Infinity, 0]], |
| ['Case 26' , [ctx, Infinity, Infinity, Infinity, 0, Infinity, Infinity]], |
| ['Case 27' , [ctx, Infinity, Infinity, Infinity, 0, 0, Infinity]], |
| ['Case 28' , [ctx, Infinity, Infinity, 0, Infinity, 0, 0]], |
| ['Case 29' , [ctx, Infinity, Infinity, 0, Infinity, Infinity, 0]], |
| ['Case 30' , [ctx, Infinity, Infinity, 0, Infinity, Infinity, Infinity]], |
| ['Case 31' , [ctx, Infinity, Infinity, 0, Infinity, 0, Infinity]], |
| ['Case 32' , [ctx, Infinity, Infinity, 0, 0, Infinity, 0]], |
| ['Case 33' , [ctx, Infinity, Infinity, 0, 0, Infinity, Infinity]], |
| ['Case 34' , [ctx, Infinity, Infinity, 0, 0, 0, Infinity]], |
| ['Case 35' , [ctx, Infinity, 0, Infinity, 0, 0, 0]], |
| ['Case 36' , [ctx, Infinity, 0, Infinity, Infinity, 0, 0]], |
| ['Case 37' , [ctx, Infinity, 0, Infinity, Infinity, Infinity, 0]], |
| ['Case 38' , [ctx, Infinity, 0, Infinity, Infinity, Infinity, Infinity]], |
| ['Case 39' , [ctx, Infinity, 0, Infinity, Infinity, 0, Infinity]], |
| ['Case 40' , [ctx, Infinity, 0, Infinity, 0, Infinity, 0]], |
| ['Case 41' , [ctx, Infinity, 0, Infinity, 0, Infinity, Infinity]], |
| ['Case 42' , [ctx, Infinity, 0, Infinity, 0, 0, Infinity]], |
| ['Case 43' , [ctx, Infinity, 0, 0, Infinity, 0, 0]], |
| ['Case 44' , [ctx, Infinity, 0, 0, Infinity, Infinity, 0]], |
| ['Case 45' , [ctx, Infinity, 0, 0, Infinity, Infinity, Infinity]], |
| ['Case 46' , [ctx, Infinity, 0, 0, Infinity, 0, Infinity]], |
| ['Case 47' , [ctx, Infinity, 0, 0, 0, Infinity, 0]], |
| ['Case 48' , [ctx, Infinity, 0, 0, 0, Infinity, Infinity]], |
| ['Case 49' , [ctx, Infinity, 0, 0, 0, 0, Infinity]], |
| ['Case 50' , [ctx, 0, Infinity, Infinity, 0, 0, 0]], |
| ['Case 51' , [ctx, 0, Infinity, Infinity, Infinity, 0, 0]], |
| ['Case 52' , [ctx, 0, Infinity, Infinity, Infinity, Infinity, 0]], |
| ['Case 53' , [ctx, 0, Infinity, Infinity, Infinity, Infinity, Infinity]], |
| ['Case 54' , [ctx, 0, Infinity, Infinity, Infinity, 0, Infinity]], |
| ['Case 55' , [ctx, 0, Infinity, Infinity, 0, Infinity, 0]], |
| ['Case 56' , [ctx, 0, Infinity, Infinity, 0, Infinity, Infinity]], |
| ['Case 57' , [ctx, 0, Infinity, Infinity, 0, 0, Infinity]], |
| ['Case 58' , [ctx, 0, Infinity, 0, Infinity, 0, 0]], |
| ['Case 59' , [ctx, 0, Infinity, 0, Infinity, Infinity, 0]], |
| ['Case 60' , [ctx, 0, Infinity, 0, Infinity, Infinity, Infinity]], |
| ['Case 61' , [ctx, 0, Infinity, 0, Infinity, 0, Infinity]], |
| ['Case 62' , [ctx, 0, Infinity, 0, 0, Infinity, 0]], |
| ['Case 63' , [ctx, 0, Infinity, 0, 0, Infinity, Infinity]], |
| ['Case 64' , [ctx, 0, Infinity, 0, 0, 0, Infinity]], |
| ['Case 65' , [ctx, 0, 0, Infinity, Infinity, 0, 0]], |
| ['Case 66' , [ctx, 0, 0, Infinity, Infinity, Infinity, 0]], |
| ['Case 67' , [ctx, 0, 0, Infinity, Infinity, Infinity, Infinity]], |
| ['Case 68' , [ctx, 0, 0, Infinity, Infinity, 0, Infinity]], |
| ['Case 69' , [ctx, 0, 0, Infinity, 0, Infinity, 0]], |
| ['Case 70' , [ctx, 0, 0, Infinity, 0, Infinity, Infinity]], |
| ['Case 71' , [ctx, 0, 0, Infinity, 0, 0, Infinity]], |
| ['Case 72' , [ctx, 0, 0, 0, Infinity, Infinity, 0]], |
| ['Case 73' , [ctx, 0, 0, 0, Infinity, Infinity, Infinity]], |
| ['Case 74' , [ctx, 0, 0, 0, Infinity, 0, Infinity]], |
| ['Case 75' , [ctx, 0, 0, 0, 0, Infinity, Infinity]] |
| ] |
| generate_tests(setCurrentTransformToNonfinite, testScenarios); |
| |
| matrix = ctx.currentTransform; |
| assert_equals(matrix.a, 1); |
| assert_equals(matrix.b, 0); |
| assert_equals(matrix.c, 0); |
| assert_equals(matrix.d, 1); |
| assert_equals(matrix.e, 100); |
| assert_equals(matrix.f, 10); |
| |
| ctx.fillStyle = 'green'; |
| ctx.fillRect(-100, -10, 100, 100); |
| |
| imageData = ctx.getImageData(1, 1, 98, 98); |
| imgdata = imageData.data; |
| assert_equals(imgdata[4], 0); |
| assert_equals(imgdata[5], 128); |
| assert_equals(imgdata[6], 0); |
| }, "Series of tests to ensure correct behaviour of canvas.currentTransform"); |
| </script> |
| </body> |
