Practice/_src/admin/scss/plugins/ax5ui/_mixin.scss

/*!
 * Copyright (c) 2017. tom@axisj.com
 * - github.com/thomasjang
 * - www.axisj.com
 */

$hack_ie67: '.';

@mixin placeholder($color: $input-color-placeholder) {
    // Firefox
    &::-moz-placeholder {
        color: $color;
        opacity: 1; // Override Firefox's unusual default opacity; see https://github.com/twbs/bootstrap/pull/11526
    }
    &:-ms-input-placeholder {
        color: $color;
    }
    // Internet Explorer 10+
    &::-webkit-input-placeholder {
        color: $color;
    }
    // Safari and Chrome
}

@mixin prefixer($property, $value, $prefixes) {
    @each $prefix in $prefixes {
        @if $prefix == webkit {
            @if $prefix-for-webkit {
                -webkit-#{$property}: $value;
            }
        } @else if $prefix == moz {
            @if $prefix-for-mozilla {
                -moz-#{$property}: $value;
            }
        } @else if $prefix == ms {
            @if $prefix-for-microsoft {
                -ms-#{$property}: $value;
            }
        } @else if $prefix == o {
            @if $prefix-for-opera {
                -o-#{$property}: $value;
            }
        } @else if $prefix == spec {
            @if $prefix-for-spec {
                #{$property}: $value;
            }
        } @else {
            @warn "Unrecognized prefix: #{$prefix}";
        }
    }
}

@mixin box-shadow($shadows...) {
    @include prefixer(box-shadow, $shadows, spec);
}

@mixin background-size($lengths...) {
    @include prefixer(background-size, $lengths, spec);
}

@mixin ax-border-radius($border-radius, $direction:"", $adjust:0) {
    @if (type_of($border-radius) == "list") {
        @if ($direction == "") {
            border-top-left-radius: nth($border-radius, 1)+$adjust;
            border-top-right-radius: nth($border-radius, 2)+$adjust;
            border-bottom-right-radius: nth($border-radius, 3)+$adjust;
            border-bottom-left-radius: nth($border-radius, 4)+$adjust;
        } @else if ($direction == "top") {
            border-top-left-radius: nth($border-radius, 1)+$adjust;
            border-top-right-radius: nth($border-radius, 2)+$adjust;
        } @else if ($direction == "bottom") {
            border-bottom-right-radius: nth($border-radius, 3)+$adjust;
            border-bottom-left-radius: nth($border-radius, 4)+$adjust;
        } @else if ($direction == "left") {
            border-top-left-radius: nth($border-radius, 1)+$adjust;
            border-bottom-left-radius: nth($border-radius, 4)+$adjust;
        } @else if ($direction == "right") {
            border-top-right-radius: nth($border-radius, 2)+$adjust;
            border-bottom-right-radius: nth($border-radius, 3)+$adjust;
        }
    } @else {
        @if ($direction == "") {
            border-radius: $border-radius+$adjust;
        } @else if ($direction == "top") {
            border-top-left-radius: $border-radius+$adjust;
            border-top-right-radius: $border-radius+$adjust;
        } @else if ($direction == "bottom") {
            border-bottom-left-radius: $border-radius+$adjust;
            border-bottom-right-radius: $border-radius+$adjust;
        } @else if ($direction == "left") {
            border-top-left-radius: $border-radius+$adjust;
            border-bottom-left-radius: $border-radius+$adjust;
        } @else if ($direction == "right") {
            border-top-right-radius: $border-radius+$adjust;
            border-bottom-right-radius: $border-radius+$adjust;
        }
    }
}

@mixin ax-background($pos, $g1: null, $g2: null) {

    $pos-type: type-of(nth($pos, 1));

    // If $pos is missing from mixin, reassign vars and add default position
    @if ($pos-type == color) or (nth($pos, 1) == "transparent") {
        $g2: $g1;
        $g1: $pos;
        $pos: to top;
    } @else if ($g1 == null) {
        $g1: $pos;
        $pos: to top;
    }

    // @debug($g1);
    @if (length($g1) == 2) {
        $g2: nth($g1, 2);
        $g1: nth($g1, 1);
        @include linear-gradient($pos, $g1, $g2);
    } @else if (length($g1) == 3) {
        @include linear-gradient(nth($g1, 1), nth($g1, 2), nth($g1, 3));
    } @else {
        @if (type_of(nth($g2, 1)) == color) {
            $g2: nth($g2, 1);
        }
        @include linear-gradient($pos, $g1, $g2);
    }
}