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Unit Converting Sass Function
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| // ---- | |
| // Sass (v3.4.12) | |
| // Compass (v1.0.3) | |
| // ---- | |
| $baseSize: 16px; | |
| $convertBase: $baseSize; | |
| html { | |
| font-size: percentage($baseSize / 16px); | |
| } | |
| @function convert($value, $convertUnit, $convertBase: $convertBase) { | |
| $currentUnit: unit($value); | |
| $strippedValue: $value / ($value * 0 + 1); | |
| @if not unitless($convertBase) { | |
| @if unit($convertBase) != px { | |
| @error "Not supported unit '#{unit($convertBase)}' as convert base!"; | |
| } | |
| $convertBase: $convertBase / ($convertBase * 0 + 1); | |
| } | |
| @if $currentUnit == px { | |
| @if $convertUnit == 'em' { | |
| @return 0em + ($strippedValue / $convertBase); | |
| } | |
| @else if $convertUnit == '%' { | |
| @return percentage($strippedValue / $convertBase); | |
| } | |
| } | |
| @else if $currentUnit == em { | |
| @if $convertUnit == 'px' { | |
| @return 0px + ($strippedValue * $convertBase); | |
| } | |
| @else if $convertUnit == '%' { | |
| @return percentage($strippedValue); | |
| } | |
| } | |
| @else if $currentUnit == '%' { | |
| @if $convertUnit == 'px' { | |
| @return 0em + ($strippedValue * $convertBase / 100); | |
| } | |
| @else if $convertUnit == 'em' { | |
| @return 0em + ($strippedValue / 100); | |
| } | |
| } | |
| // TODO: Check for pt unit convert | |
| @else if $currentUnit == pt { | |
| @if $convertUnit == 'px' { | |
| @return 0px + ($strippedValue * 1.3333); | |
| } | |
| @else if $convertUnit == 'em' { | |
| @return 0em + ($strippedValue / 12); | |
| } | |
| @else if $convertUnit == '%' { | |
| @return percentage($strippedValue / 12) | |
| } | |
| } | |
| @error "Can't convert '#{$value}' to unit '#{$convertUnit}'!"; | |
| } | |
| .example1 { | |
| font-size: convert(18px, '%'); /* converted from pixels */ | |
| } | |
| .example2 { | |
| font-size: convert(13pt, 'em'); /* converted from points */ | |
| } | |
| .example3 { | |
| font-size: convert(2.5em, 'px'); /* converted from ems */ | |
| } | |
| .example4 { | |
| font-size: convert(234%, 'px'); /* converted from percentage */ | |
| } |
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