| <!doctype html> |
| <title>SVGLength tests</title> |
| <script src=../../resources/testharness.js></script> |
| <script src=../../resources/testharnessreport.js></script> |
| <div id="testcontainer"> |
| <svg width="1" height="1" visibility="hidden"> </svg> |
| </div> |
| <script> |
| |
| var svg = document.querySelector("svg"); |
| |
| var EPSILON = Math.pow(2, -8); |
| var lengths = [10, 0, 360, 500, 90, 180, 45, 25.9]; |
| var validUnits = { |
| "" : 1, |
| "%": 2, |
| "em": 3, |
| "ex": 4, |
| "px": 5, |
| "cm": 6, |
| "mm": 7, |
| "in": 8, |
| "pt": 9, |
| "pc": 10, |
| }; |
| |
| function createLength(valuestr) { |
| var length = svg.createSVGLength(); |
| length.valueAsString = valuestr; |
| return length; |
| } |
| |
| function convertTo(value, unit, outunit) { |
| var userUnits; |
| var cssPixelsPerInch = 96; |
| var cssPixelsPerCentimeter = cssPixelsPerInch / 2.54; //2.54 cm/in |
| var cssPixelsPerMillimeter = cssPixelsPerCentimeter / 10; |
| var cssPixelsPerPoint = cssPixelsPerInch / 72; |
| var cssPixelsPerPica = cssPixelsPerInch / 6; |
| |
| switch(unit) { |
| case "": |
| case "px": |
| userUnits = value; |
| break; |
| case "%": |
| case "em": |
| case "ex": |
| case "rem": |
| case "ch": |
| return value; |
| case "cm": |
| userUnits = value * cssPixelsPerCentimeter; |
| break; |
| case "mm": |
| userUnits = value * cssPixelsPerMillimeter; |
| break; |
| case "in": |
| userUnits = value * cssPixelsPerInch; |
| break; |
| case "pt": |
| userUnits = value * cssPixelsPerPoint; |
| break; |
| case "pc": |
| userUnits = value * cssPixelsPerPica; |
| break; |
| } |
| |
| switch(outunit) { |
| case "": |
| case "px": |
| return userUnits; |
| case "%": |
| case "em": |
| case "ex": |
| case "rem": |
| case "ch": |
| return value; |
| case "cm": |
| return userUnits / cssPixelsPerCentimeter; |
| case "mm": |
| return userUnits / cssPixelsPerMillimeter; |
| case "in": |
| return userUnits / cssPixelsPerInch; |
| case "pt": |
| return userUnits / cssPixelsPerPoint; |
| case "pc": |
| return userUnits / cssPixelsPerPica; |
| } |
| } |
| |
| test(function() { |
| for (var unit in validUnits) { |
| var length = createLength(10 + unit); |
| assert_equals(length.unitType, validUnits[unit]); |
| } |
| }, "Test valid unit types are accepted in valueAsString"); |
| |
| test(function() { |
| var invalidUnits = { |
| "rem": 1, |
| "ch": 2 |
| }; |
| for (var unit in invalidUnits) { |
| assert_throws(new SyntaxError, function() { createLength(10 + unit) }); |
| } |
| }, "Test invalid unit types are not accepted in valueAsString"); |
| |
| test(function() { |
| var unitConstants = { |
| "UNKNOWN" : 0, |
| "NUMBER": 1, |
| "PERCENTAGE": 2, |
| "EMS": 3, |
| "EXS": 4, |
| "PX": 5, |
| "CM": 6, |
| "MM": 7, |
| "IN": 8, |
| "PT": 9, |
| "PC": 10, |
| }; |
| for (var constant in unitConstants) { |
| var str = "SVG_LENGTHTYPE_" + constant; |
| assert_own_property(SVGLength, str, str + " should exist in SVGLength"); |
| } |
| }, "Test that unit constants that are supposed to be exposed are available"); |
| |
| test(function() { |
| var nonexposedUnitConstants = { |
| "REMS": 11, |
| "CHS":12 |
| }; |
| for (var constant in nonexposedUnitConstants) { |
| var str = "SVG_LENGTHTYPE_" + constant; |
| assert_false(str in SVGLength, str + " should not be exposed in SVGLength"); |
| } |
| }, "Test that unit constants that are not supposed to be exposed are not available"); |
| |
| test(function() { |
| for (var i = 0; i < validUnits.length; ++i) { |
| var unit = validUnits[i]; |
| for (var j = 0; j < lengths.length; ++j) { |
| var length = lengths[i]; |
| var value = createLength(length + unit); |
| assert_equals(length, value.valueInSpecifiedUnits); |
| } |
| } |
| }, "Test result from valueInSpecifiedUnits"); |
| |
| test(function() { |
| var nonRelativeUnits = ["px", "cm", "mm", "in", "pt", "pc"]; |
| |
| for (var i = 0; i < lengths.length; ++i) { |
| var length = lengths[i]; |
| for (var j = 0; j < nonRelativeUnits.length; ++j) { |
| var unit = nonRelativeUnits[j]; |
| var lengthStr = length + unit; |
| for (var k = 0; k < nonRelativeUnits.length; ++k) { |
| var otherUnit = nonRelativeUnits[k]; |
| var svgLength = createLength(lengthStr); |
| svgLength.convertToSpecifiedUnits(validUnits[otherUnit]); |
| assert_approx_equals(svgLength.valueInSpecifiedUnits, convertTo(length, unit, otherUnit), EPSILON); |
| } |
| } |
| } |
| }, "Test converting unit types for non-relative units"); |
| |
| test(function() { |
| for (var i = 0; i < lengths.length; ++i) { |
| var length = lengths[i]; |
| for (var j = 0; j < validUnits.length; ++j) { |
| var unit = validUnits[j]; |
| var ref = createLength(length + unit); |
| |
| for (var k = 0; k < validUnits.length; ++k) { |
| var otherUnit = validUnits[k]; |
| |
| var value = createLength(47 + otherUnit); |
| value.newValueSpecifiedUnits(unit, length); |
| |
| assert_equals(value.valueAsString, ref.valueAsString); |
| } |
| } |
| } |
| }, "Test newValueSpecifiedUnits for each unit"); |
| |
| </script> |
| |
