weui/src/style/widget/weui-cell/weui-switch.less

A UI library by WeChat official design team, includes the most useful widgets/modules in mobile web applications.

/*
* Tencent is pleased to support the open source community by making WeUI available.
* 
* Copyright (C) 2017 THL A29 Limited, a Tencent company. All rights reserved.
* 
* Licensed under the MIT License (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
* 
*       http://opensource.org/licenses/MIT
* 
* Unless required by applicable law or agreed to in writing, software distributed under the License is
* distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
* either express or implied. See the License for the specific language governing permissions and
* limitations under the License.
*/

@import "../../base/fn";

.weui-cell_switch {
    padding-top: (@weuiCellHeight - @weuiSwitchHeight) / 2;
    padding-bottom: (@weuiCellHeight - @weuiSwitchHeight) / 2;
}
.weui-switch {
    appearance: none;
}
.weui-switch,
.weui-switch-cp__box {
    position: relative;
    width: 52px;
    height: @weuiSwitchHeight;
    border: 2px solid @weuiLineColorLight;
    outline: 0;
    border-radius: 16px;
    box-sizing: border-box;
    transition: background-color 0.1s, border 0.1s;

    &:before {
        content: " ";
        position: absolute;
        top: 0;
        left: 0;
        bottom: 0;
        right: 0;
        border-radius: 15px;
        background-color: var(--weui-BG-3);
        transition: transform 0.35s cubic-bezier(0.45, 1, 0.4, 1);
    }
    &:after {
        content: " ";
        position: absolute;
        top: 0;
        left: 0;
        width: @weuiSwitchHeight - 4;
        height: @weuiSwitchHeight - 4;
        border-radius: 15px;
        background-color: #fff; // 固定色值
        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);
    }
}
.weui-switch:checked,
.weui-switch-cp__input:checked + .weui-switch-cp__box,
.weui-switch-cp__input[aria-checked="true"] + .weui-switch-cp__box {
    border-color: @weuiColorPrimary;
    background-color: @weuiColorPrimary;
    &:before {
        transform: scale(0);
    }
    &:after {
        transform: translateX(20px);
    }
}

// 兼容小程序/IE Edge的版本
.weui-switch-cp__input {
    position: absolute;
    width:0;
    height:0;
    opacity:0;
    overflow:hidden;
}
.weui-switch-cp__box {
    display: block;
}