我在尝试将相当复杂的渐变转换为SASS的mixin时遇到了一些麻烦,大多数渐变都很好,我相信我的颜色停止也是正确的,我相信这是我的MIXIN不会让它的定位我这样做(左上,右下)。
我需要这个:
.progress.stripes.animate > .bar > span {
background-image: -webkit-gradient(
linear, left top, right bottom,
color-stop(.25, rgba(255, 255, 255, .2)),
color-stop(.25, transparent),
color-stop(.5, transparent),
color-stop(.5, rgba(255, 255, 255, .2)),
color-stop(.75, rgba(255, 255, 255, .2)),
color-stop(.75, transparent), to(transparent));
background-image: -moz-linear-gradient(-45deg, rgba(255, 255, 255, .2) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, .2) 50%, rgba(255, 255, 255, .2) 75%, transparent 75%, transparent);
}
使用此mixin:
@mixin linear-gradient($gradientLine, $colorStops...) {
background-color: nth($colorStops,1);
background-image: -webkit-gradient(linear, $gradientLine, $colorStops);
background-image: -webkit-linear-gradient($gradientLine, $colorStops);
background-image: -moz-linear-gradient($gradientLine, $colorStops);
background-image: -o-linear-gradient($gradientLine, $colorStops);
background: -ms-linear-gradient($gradientLine, $colorStops);
@if length($colorStops) == 2 {
$colour1:nth($colorStops,1);
$colour2:nth($colorStops,2);
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#{$colour1}', endColorstr='#{$colour2}',GradientType=0 );
}
@if length($gradientLine) == 2 {
background-image: linear-gradient(to #{inverse-side(nth($gradientLine, 1))} #{inverse-side(nth($gradientLine, 2))}, $colorStops);
} @else {
background-image: linear-gradient(to #{inverse-side($gradientLine)}, $colorStops);
}
}
这是我尝试过的但它不起作用......
$grad: rgba(255, 255, 255, .2);
.progress.stripes.animate > .bar > span {
@include linear-gradient((left top, right bottom),$grad 25%, $transparent 25%, $transparent 5%, $grad 5%, $grad 75%, $transparent 75%);
}
答案 0 :(得分:1)
Sass告诉你错误信息中没有这个原因的原因:功能反面完成没有@return 。
@function inverse-side($side) {
@if $side == top {
@return bottom;
}
@else if $side == bottom {
@return top;
}
@else if $side == left {
@return right;
}
@else if $side == right {
@return left;
}
}
这里只考虑4个条件:top,right,bottom,left。有一个被忽视的第五个选项:以上都没有。如果只有4个选项,那么你需要3个if / else块和最后一个返回值,这是你的全部。
@function inverse-side($side) {
@if $side == top {
@return bottom;
}
@else if $side == bottom {
@return top;
}
@else if $side == left {
@return right;
}
@return left;
}