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rem() mixin for Less CSS
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| /* --------------------------------------------------------------------------- | |
| Toolkit: Rem | |
| ============ | |
| .rem() takes a @property, and @list of values (in px or unitless) and | |
| converts to rem. | |
| e.g., | |
| .selector { | |
| .rem( margin, 20 auto eggs 666% ); | |
| .rem( font-size, 12 ); | |
| } | |
| Makes life a little easier when working from designs specced in pixels. | |
| --------------------------------------------------------------------------- */ | |
| .rem( @property, @list, @base: 16 ) { | |
| @n: length(@list); | |
| // Only convert numbers that are not percentages or 0; | |
| ._merge( @px ) when ( isnumber(@px) ) and not ( ispercentage(@px) ) and not ( @px = 0 ) { | |
| @rem: ( @px / @base ); | |
| @{property}+_: unit(@rem, rem); | |
| } | |
| ._merge( @px ) when ( default() ) { | |
| @{property}+_: @px; | |
| } | |
| ._loop( @n ) when ( @n > 0 ) { | |
| ._loop((@n - 1)); | |
| @val: extract(@list, @n); | |
| ._merge( @val ); // merges values onto @property with space character. | |
| } | |
| ._loop( @n ); | |
| } |
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