xiaoshi-wx/node_modules/wux-weapp/packages/core/switch/index.less

@import "../styles/mixins/index.less";
@import "../styles/themes/index.less";

@switch-handle-height: @switch-height - 1px * 2;
@switch-spin-height: @switch-handle-height / 2;
@switch-spin-marign: (@switch-handle-height - @switch-spin-height) / 2;

.switch-style(@theme, @color) {
    &--@{theme} &__spin {
        .encoded-svg-background(spin, @color);
    }
}

.@{wux-prefix}-switch {
    display: inline-block;
    vertical-align: middle;
    box-sizing: border-box;
    position: relative;
    align-self: center;
    cursor: pointer;

    &__input {
        position: relative;
        min-width: 52px;
        height: @switch-height;
        border: 1px solid @switch-bg;
        outline: 0;
        border-radius: @switch-height / 2;
        box-sizing: border-box;
        background-color: @switch-bg;
        transition: background-color 0.1s, border 0.1s;

        &::before {
            content: " ";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: @switch-handle-height;
            border-radius: @switch-handle-height / 2;
            background-color: #FDFDFD;
            transition: transform 0.35s cubic-bezier(0.45, 1, 0.4, 1);
        }

        &::after {
            content: " ";
            position: absolute;
            top: 0;
            left: 0;
            width: @switch-handle-height;
            height: @switch-handle-height;
            border-radius: @switch-handle-height / 2;
            background-color: #FFF;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
            // transition: transform 0.35s cubic-bezier(0.4, 0.4, 0.25, 1.35);
            transition: left 0.35s cubic-bezier(0.4, 0.4, 0.25, 1.35);
        }

        &--checked {
            border-color: @switch-color;
            background-color: @switch-color;

            &::before {
                transform: scale(0);
            }

            &::after {
                // transform: translateX(20px);
                left: calc(~"100% - 30px - 1px / 2");
            }
        }

        &--disabled {
            opacity: @disabled-opacity;
        }
    }

    &__text {
        position: relative;
        z-index: 10;
        display: flex;
        justify-content: center;
        align-items: center;
        height: 100%;
        transition: margin .2s;
        margin: 0 8px 0 calc(@switch-height - 1px + 4px);
    }

    &--checked &__text {
        color: @text-color-inverse;
        margin: 0 calc(@switch-height - 1px + 5px) 0 10px;
    }

    &__spin {
        position: absolute;
        left: @switch-spin-marign;
        top: @switch-spin-marign;
        z-index: 10;
        width: @switch-spin-height;
        height: @switch-spin-height;
        background-size: contain;
        animation: switch-spin-rotate 1s linear infinite;

        .encoded-svg-background(spin, @switch-color);
    }

    &--checked &__spin {
        left: unset;
        right: @switch-spin-marign;
    }

    .switch-style(light, @light);
    .switch-style(stable, @stable);
    .switch-style(positive, @positive);
    .switch-style(calm, @calm);
    .switch-style(assertive, @assertive);
    .switch-style(balanced, @balanced);
    .switch-style(energized, @energized);
    .switch-style(royal, @royal);
    .switch-style(dark, @dark);
}

@keyframes switch-spin-rotate {
    to {
        transform: rotate(1turn);
    }
}