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| 1 // Copyright 2014 Google Inc. All rights reserved. |
| 2 // |
| 3 // Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 // you may not use this file except in compliance with the License. |
| 5 // You may obtain a copy of the License at |
| 6 // |
| 7 // http://www.apache.org/licenses/LICENSE-2.0 |
| 8 // |
| 9 // Unless required by applicable law or agreed to in writing, software |
| 10 // distributed under the License is distributed on an "AS IS" BASIS, |
| 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 // See the License for the specific language governing permissions and |
| 13 // limitations under the License. |
| 14 |
| 15 (function(scope, testing) { |
| 16 |
| 17 function numberToString(x) { |
| 18 return x.toFixed(3).replace(/0+$/, '').replace(/\.$/, ''); |
| 19 } |
| 20 |
| 21 function clamp(min, max, x) { |
| 22 return Math.min(max, Math.max(min, x)); |
| 23 } |
| 24 |
| 25 function parseNumber(string) { |
| 26 if (/^\s*[-+]?(\d*\.)?\d+\s*$/.test(string)) |
| 27 return Number(string); |
| 28 } |
| 29 |
| 30 function mergeNumbers(left, right) { |
| 31 return [left, right, numberToString]; |
| 32 } |
| 33 |
| 34 // FIXME: This should probably go in it's own handler. |
| 35 function mergeFlex(left, right) { |
| 36 if (left == 0) |
| 37 return; |
| 38 return clampedMergeNumbers(0, Infinity)(left, right); |
| 39 } |
| 40 |
| 41 function mergePositiveIntegers(left, right) { |
| 42 return [left, right, function(x) { |
| 43 return Math.round(clamp(1, Infinity, x)); |
| 44 }]; |
| 45 } |
| 46 |
| 47 function clampedMergeNumbers(min, max) { |
| 48 return function(left, right) { |
| 49 return [left, right, function(x) { |
| 50 return numberToString(clamp(min, max, x)); |
| 51 }]; |
| 52 }; |
| 53 } |
| 54 |
| 55 function parseNumberList(string) { |
| 56 var items = string.trim().split(/\s*[\s,]\s*/); |
| 57 if (items.length === 0) { |
| 58 return; |
| 59 } |
| 60 var result = []; |
| 61 for (var i = 0; i < items.length; i++) { |
| 62 var number = parseNumber(items[i]); |
| 63 if (number === undefined) { |
| 64 return; |
| 65 } |
| 66 result.push(number); |
| 67 } |
| 68 return result; |
| 69 } |
| 70 |
| 71 function mergeNumberLists(left, right) { |
| 72 if (left.length != right.length) { |
| 73 return; |
| 74 } |
| 75 return [left, right, function(numberList) { |
| 76 return numberList.map(numberToString).join(' '); |
| 77 }]; |
| 78 } |
| 79 |
| 80 function round(left, right) { |
| 81 return [left, right, Math.round]; |
| 82 } |
| 83 |
| 84 scope.clamp = clamp; |
| 85 scope.addPropertiesHandler(parseNumberList, mergeNumberLists, ['stroke-dasharr
ay']); |
| 86 scope.addPropertiesHandler(parseNumber, clampedMergeNumbers(0, Infinity), ['bo
rder-image-width', 'line-height']); |
| 87 scope.addPropertiesHandler(parseNumber, clampedMergeNumbers(0, 1), ['opacity',
'shape-image-threshold']); |
| 88 scope.addPropertiesHandler(parseNumber, mergeFlex, ['flex-grow', 'flex-shrink'
]); |
| 89 scope.addPropertiesHandler(parseNumber, mergePositiveIntegers, ['orphans', 'wi
dows']); |
| 90 scope.addPropertiesHandler(parseNumber, round, ['z-index']); |
| 91 |
| 92 scope.parseNumber = parseNumber; |
| 93 scope.parseNumberList = parseNumberList; |
| 94 scope.mergeNumbers = mergeNumbers; |
| 95 scope.numberToString = numberToString; |
| 96 |
| 97 })(webAnimations1, webAnimationsTesting); |
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