frontend/src/components/common/Header.vue

<template>
    <div class="header">
        <!-- 折叠按钮 -->
        <!-- <div class="collapse-btn" @click="collapseChage">
            <i v-if="!collapse" class="el-icon-s-fold"></i>
            <i v-else class="el-icon-s-unfold"></i>
        </div> -->
        <div class="logo">可视化智能管控系统</div>
        <v-sidebar></v-sidebar>
        <div class="header-right">
            <div class="header-user-con">
                <el-select v-model="theme" @change="changeTheme">
                    <el-option label="蓝色" value="蓝色"></el-option>
                    <el-option label="红色" value="红色"></el-option>
                    <el-option label="绿色" value="绿色"></el-option>
                    <el-option label="橙色" value="橙色"></el-option>
                </el-select>
                <!-- 全屏显示 -->

                <div class="btn-fullscreen" @click="handleFullScreen">
                    <el-tooltip effect="dark" :content="fullscreen ? `取消全屏` : `全屏`" placement="bottom">
                        <i class="el-icon-rank"></i>
                    </el-tooltip>
                </div>

                <!-- 用户头像 -->
                <div class="user-avator">
                    <img src="../../assets/img/user.jpeg" />
                </div>
                <!-- 用户名下拉菜单 -->
                <el-dropdown class="user-name" trigger="click" @command="handleCommand">
                    <span class="el-dropdown-link">
                        {{ username }}
                        <i class="el-icon-caret-bottom"></i>
                    </span>
                    <el-dropdown-menu slot="dropdown">
                        <el-dropdown-item divided command="loginout">退出登录</el-dropdown-item>
                    </el-dropdown-menu>
                </el-dropdown>
            </div>
        </div>
    </div>
</template>
<script>
// import bus from '../common/bus';
import updateElementUiTheme from 'update-element-ui-theme';
import vSidebar from './Sidebar.vue';
export default {
    components: {
        vSidebar
    },
    data() {
        return {
            color: '#20a0ff',
            theme: '蓝色',
            //collapse: false,
            fullscreen: false,
            name: 'xinyin'
            //message: 2
        };
    },
    computed: {
        username() {
            let username = localStorage.getItem('ms_username');
            return username ? username : this.name;
        }
    },
    methods: {
        //修改主题色
        changeTheme() {
            const app = document.getElementById('app');
            if (this.theme === '蓝色') {
                this.color = '#20a0ff';
                app.classList.remove('redStyle', 'greenStyle', 'orangeStyle');
                app.classList.add('blueStyle');
            } else if (this.theme === '红色') {
                this.color = '#EE320C';
                app.classList.remove('blueStyle', 'greenStyle', 'orangeStyle');
                app.classList.add('redStyle');
            } else if (this.theme === '绿色') {
                this.color = '#25EE28';
                app.classList.add('greenStyle');
            } else if (this.theme === '橙色') {
                this.color = '#f08200';
                app.classList.remove('blueStyle', 'greenStyle', 'redStyle');
                app.classList.add('orangeStyle');
            }
        },
        // 用户名下拉菜单选择事件
        handleCommand(command) {
            if (command == 'loginout') {
                localStorage.removeItem('ms_username');
                this.$router.push('/login');
            }
        },
        // 侧边栏折叠
        // collapseChage() {
        //     this.collapse = !this.collapse;
        //     bus.$emit('collapse', this.collapse);
        //     this.$store.commit('changeOpen', this.collapse);
        // },
        // 全屏事件
        handleFullScreen() {
            let element = document.documentElement;
            if (this.fullscreen) {
                if (document.exitFullscreen) {
                    document.exitFullscreen();
                } else if (document.webkitCancelFullScreen) {
                    document.webkitCancelFullScreen();
                } else if (document.mozCancelFullScreen) {
                    document.mozCancelFullScreen();
                } else if (document.msExitFullscreen) {
                    document.msExitFullscreen();
                }
            } else {
                if (element.requestFullscreen) {
                    element.requestFullscreen();
                } else if (element.webkitRequestFullScreen) {
                    element.webkitRequestFullScreen();
                } else if (element.mozRequestFullScreen) {
                    element.mozRequestFullScreen();
                } else if (element.msRequestFullscreen) {
                    // IE11
                    element.msRequestFullscreen();
                }
            }
            this.fullscreen = !this.fullscreen;
        }
    },
    mounted() {
        this.$watch(
            'color',
            (value) => {
                updateElementUiTheme({
                    theme: value,
                    themeName: '--my-theme-name'
                });
            },
            { immediate: true }
        );
    }
};
</script>
<style lang="less">
.header {
    position: relative;
    box-sizing: border-box;
    width: 100%;
    height: 70px;
    font-size: 22px;
    color: #fff;
    background-color: #242f42;
    .collapse-btn {
        float: left;
        padding: 0 21px;
        cursor: pointer;
        line-height: 70px;
    }
    .logo {
        float: left;
        width: 250px;
        line-height: 70px;
        text-align: center;
    }
    .header-right {
        float: right;
        padding-right: 32px;
    }
    .header-user-con {
        display: flex;
        height: 70px;
        align-items: center;
    }
    .btn-fullscreen {
        transform: rotate(45deg);
        margin-right: 5px;
        font-size: 24px;
    }
    .btn-bell,
    .btn-fullscreen {
        position: relative;
        width: 30px;
        height: 30px;
        text-align: center;
        border-radius: 15px;
        cursor: pointer;
    }
    .btn-bell-badge {
        position: absolute;
        right: 0;
        top: -2px;
        width: 8px;
        height: 8px;
        border-radius: 4px;
        background: #f56c6c;
        color: #fff;
    }
    .btn-bell .el-icon-bell {
        color: #fff;
    }
    .user-name {
        margin-left: 10px;
    }
    .user-avator {
        margin-left: 20px;
    }
    .user-avator img {
        display: block;
        width: 40px;
        height: 40px;
        border-radius: 50%;
    }
    .el-dropdown-link {
        color: #fff;
        cursor: pointer;
    }
    .el-dropdown-menu__item {
        text-align: center;
    }
}
</style>