SCSS/SASS@每个循环调色板，具有HEX和RGB格式

Question

如何使用@每个循环以HEX和RGB格式显示此调色板

调色板变量：

$colors: (
"transparent": transparent,
"current": currentColor,
"white": (
hex: #FFFFFF,
rgb: (255, 255, 255)
),
"black": (
hex: #000000,
rgb: (0, 0, 0)
)
) !default;

编译到CSS:后我预期的结果

.color-transparent {
color: transparent;
}
.color-current {
color: currentColor;
}
.color-white {
--color-opacity: 1;
color: #FFFFFF;
color: rgba(255, 255, 255, var(--color-opacity));
}
.color-black {
--color-opacity: 1;
color: #000000;
color: rgba(0, 0, 0, var(--color-opacity));
}

Answer 1

以下是如何使用@each和映射。

$colors: (
"transparent": transparent,
"current": currentColor,
"white": (
hex: #FFFFFF,
rgba: (255, 255, 255, var(--color-opacity))
),
"black": (
hex: #000000,
rgba: (0, 0, 0, var(--color-opacity))
)
) !default;
// $COLOR = KEY, $VALUE = VALUE, $COLORS = MAP
@each $color, $value in $colors {
// SINGLE VALUE
@if $color == "transparent" {
.color-#{$color} {
color: #{$value};
}
} @else if $color == "current" {
.color-#{$color} {
color: $value;
}
// SUBMAP - SINCE $VALUE IS ANOTHER MAP HERE.   
} @else {
// SET THE COLOR NAME
.color-#{$color} {
// SET YOUR COLOR OPACITY    
--color-opacity: 1;
// LOOP THROUGH THE TWO COLORS IN THE SUBMAP
@each $color_name, $value_c in $value {
@if $color_name == hex {
color: $value_c;
} @else {
color: rbga( $value_c );
}
}
}
}
}

CSS输出

.color-transparent {
color: transparent;
}
.color-current {
color: currentColor;
}
.color-white {
--color-opacity: 1;
color: #FFFFFF;
color: rbga(255, 255, 255, var(--color-opacity));
}
.color-black {
--color-opacity: 1;
color: #000000;
color: rbga(0, 0, 0, var(--color-opacity));
}

EDIT FOR RGBA((函数问题

若要修复rgba()引发通道错误的问题，可以删除hex部分之后的@else，并将十六进制值传递给rgba()函数。这将把十六进制转换为rgb值。

$colors: (
"transparent": transparent,
"current": currentColor,
"white": (
hex: #FFFFFF,
rgba: (255, 255, 255, var(--color-opacity))
),
"black": (
hex: #000000,
rgba: (0, 0, 0, var(--color-opacity))
)
) !default;
// $COLOR = KEY, $VALUE = VALUE, $COLORS = MAP
@each $color, $value in $colors {
// SINGLE VALUE
@if $color == "transparent" {
.color-#{$color} {
color: #{$value};
}
} @else if $color == "current" {
.color-#{$color} {
color: $value;
}
// SUBMAP - SINCE $VALUE IS ANOTHER MAP HERE.   
} @else {
// SET THE COLOR NAME
.color-#{$color} {
// SET YOUR COLOR OPACITY    
--color-opacity: 1;
// LOOP THROUGH THE TWO COLORS IN THE SUBMAP
@each $color_name, $value_c in $value {
// WE ONLY WANT TO USE HEX, BECAUSE RGBA() IS A NATIVE FUNCTION
@if $color_name == hex {
color: $value_c;
color: rgba( $value_c, var(--color-opacity));
} 
}
}
}
}