Pretty usable.

[wolnelektury.git] / src / wolnelektury / static / 2021 / css / utils / bourbon / library / _contrast-switch.scss

diff --git a/src/wolnelektury/static/2021/css/utils/bourbon/library/_contrast-switch.scss b/src/wolnelektury/static/2021/css/utils/bourbon/library/_contrast-switch.scss
deleted file mode 100644 (file)
index 6f3c8e4..0000000
--- a/src/wolnelektury/static/2021/css/utils/bourbon/library/_contrast-switch.scss
+++ /dev/null
@@ -1,81 +0,0 @@
-@charset "UTF-8";
-
-/// Switches between two colors based on the contrast to another color. It’s
-/// like a [ternary operator] for color contrast and can be useful for building
-/// a button system.
-///
-/// The calculation of the contrast ratio is based on the [WCAG 2.0
-/// specification]. However, we cannot guarantee full compliance, though all of
-/// our manual testing passed.
-///
-///   [ternary operator]: https://goo.gl/ccfLqi
-///   [WCAG 2.0 specification]: https://goo.gl/zhQuYA
-///
-/// @argument {color} $base-color
-///   The color to evaluate lightness against.
-///
-/// @argument {color} $dark-color [#000]
-///   The color to be output when `$base-color` is light. Can also be set
-///   globally using the `contrast-switch-dark-color` key in the
-///   Bourbon settings.
-///
-/// @argument {color} $light-color [#fff]
-///   The color to be output when `$base-color` is dark. Can also be set
-///   globally using the `contrast-switch-light-color` key in the
-///   Bourbon settings.
-///
-/// @return {color}
-///
-/// @example scss
-///   .element {
-///     color: contrast-switch(#bae6e6);
-///   }
-///
-///   // CSS Output
-///   .element {
-///     color: #000;
-///   }
-///
-/// @example scss
-///   .element {
-///     $button-color: #2d72d9;
-///     background-color: $button-color;
-///     color: contrast-switch($button-color, #222, #eee);
-///   }
-///
-///   // CSS Output
-///   .element {
-///     background-color: #2d72d9;
-///     color: #eee;
-///   }
-///
-/// @require {function} _fetch-bourbon-setting
-///
-/// @require {function} _is-color
-///
-/// @require {function} _contrast-ratio
-///
-/// @since 5.0.0
-
-@function contrast-switch(
-  $base-color,
-  $dark-color: _fetch-bourbon-setting("contrast-switch-dark-color"),
-  $light-color: _fetch-bourbon-setting("contrast-switch-light-color")
-) {
-  @if not _is-color($base-color) {
-    @error "`#{$base-color}` is not a valid color for the `$base-color` " +
-           "argument in the `contrast-switch` function.";
-  } @else if not _is-color($dark-color) {
-    @error "`#{$dark-color}` is not a valid color for the `$dark-color` " +
-           "argument in the `contrast-switch` function.";
-  } @else if not _is-color($light-color) {
-    @error "`#{$light-color}` is not a valid color for the `$light-color` " +
-           "argument in the `contrast-switch` function.";
-  } @else {
-    $-contrast-to-dark: _contrast-ratio($base-color, $dark-color);
-    $-contrast-to-light: _contrast-ratio($base-color, $light-color);
-    $-prefer-dark: $-contrast-to-dark >= $-contrast-to-light;
-
-    @return if($-prefer-dark, $dark-color, $light-color);
-  }
-}