Created
December 13, 2021 18:43
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Credit Card transformation offset mapping from Compose documentation.
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| // Making XXXX-XXXX-XXXX-XXXX string. | |
| val creditCardOffsetMapping = object : OffsetMapping { | |
| override fun originalToTransformed(offset: Int): Int { | |
| if (offset <= 3) return offset | |
| if (offset <= 7) return offset + 1 | |
| if (offset <= 11) return offset + 2 | |
| if (offset <= 16) return offset + 3 | |
| return 19 | |
| } | |
| override fun transformedToOriginal(offset: Int): Int { | |
| if (offset <= 4) return offset | |
| if (offset <= 9) return offset - 1 | |
| if (offset <= 14) return offset - 2 | |
| if (offset <= 19) return offset - 3 | |
| return 16 | |
| } | |
| } |
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