235 lines
		
	
	
		
			7.1 KiB
		
	
	
	
		
			Vue
		
	
	
	
	
	
		
		
			
		
	
	
			235 lines
		
	
	
		
			7.1 KiB
		
	
	
	
		
			Vue
		
	
	
	
	
	
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								<template>
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									<view
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									    class="u-icon"
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									    @tap="clickHandler"
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									    :class="['u-icon--' + labelPos]"
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									>
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										<image
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										    class="u-icon__img"
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										    v-if="isImg"
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										    :src="name"
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										    :mode="imgMode"
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										    :style="[imgStyle, $u.addStyle(customStyle)]"
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										></image>
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										<text
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										    v-else
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										    class="u-icon__icon"
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										    :class="uClasses"
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										    :style="[iconStyle, $u.addStyle(customStyle)]"
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										    :hover-class="hoverClass"
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										>{{icon}}</text>
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										<!-- 这里进行空字符串判断,如果仅仅是v-if="label",可能会出现传递0的时候,结果也无法显示 -->
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										<text
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										    v-if="label !== ''" 
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										    class="u-icon__label"
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										    :style="{
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											color: labelColor,
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											fontSize: $u.addUnit(labelSize),
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											marginLeft: labelPos == 'right' ? $u.addUnit(space) : 0,
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											marginTop: labelPos == 'bottom' ? $u.addUnit(space) : 0,
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											marginRight: labelPos == 'left' ? $u.addUnit(space) : 0,
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											marginBottom: labelPos == 'top' ? $u.addUnit(space) : 0,
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										}"
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										>{{ label }}</text>
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									</view>
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								</template>
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								<script>
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									// #ifdef APP-NVUE
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									// nvue通过weex的dom模块引入字体,相关文档地址如下:
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									// https://weex.apache.org/zh/docs/modules/dom.html#addrule
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									const fontUrl = 'https://at.alicdn.com/t/font_2225171_8kdcwk4po24.ttf'
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									const domModule = weex.requireModule('dom')
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									domModule.addRule('fontFace', {
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										'fontFamily': "uicon-iconfont",
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										'src': `url('${fontUrl}')`
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									})
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									// #endif
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									// 引入图标名称,已经对应的unicode
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									import icons from './icons'
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									import props from './props.js';;
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									/**
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									 * icon 图标
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									 * @description 基于字体的图标集,包含了大多数常见场景的图标。
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									 * @tutorial https://www.uviewui.com/components/icon.html
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									 * @property {String}			name			图标名称,见示例图标集
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									 * @property {String}			color			图标颜色,可接受主题色 (默认 color['u-content-color'] )
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									 * @property {String | Number}	size			图标字体大小,单位px (默认 '16px' )
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									 * @property {Boolean}			bold			是否显示粗体 (默认 false )
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									 * @property {String | Number}	index			点击图标的时候传递事件出去的index(用于区分点击了哪一个)
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									 * @property {String}			hoverClass		图标按下去的样式类,用法同uni的view组件的hoverClass参数,详情见官网
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									 * @property {String}			customPrefix	自定义扩展前缀,方便用户扩展自己的图标库 (默认 'uicon' )
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									 * @property {String | Number}	label			图标右侧的label文字
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									 * @property {String}			labelPos		label相对于图标的位置,只能right或bottom (默认 'right' )
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									 * @property {String | Number}	labelSize		label字体大小,单位px (默认 '15px' )
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									 * @property {String}			labelColor		图标右侧的label文字颜色 ( 默认 color['u-content-color'] )
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									 * @property {String | Number}	space			label与图标的距离,单位px (默认 '3px' )
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									 * @property {String}			imgMode			图片的mode
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									 * @property {String | Number}	width			显示图片小图标时的宽度
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									 * @property {String | Number}	height			显示图片小图标时的高度
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									 * @property {String | Number}	top				图标在垂直方向上的定位 用于解决某些情况下,让图标垂直居中的用途  (默认 0 )
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									 * @property {Boolean}			stop			是否阻止事件传播 (默认 false )
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									 * @property {Object}			customStyle		icon的样式,对象形式
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									 * @event {Function} click 点击图标时触发
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									 * @event {Function} touchstart 事件触摸时触发
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									 * @example <u-icon name="photo" color="#2979ff" size="28"></u-icon>
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									 */
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									export default {
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										name: 'u-icon',
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										data() {
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											return {
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											}
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										},
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										mixins: [uni.$u.mpMixin, uni.$u.mixin,props],
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										computed: {
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											uClasses() {
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												let classes = []
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												classes.push(this.customPrefix + '-' + this.name)
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												// // uView的自定义图标类名为u-iconfont
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												// if (this.customPrefix == 'uicon') {
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												// 	classes.push('u-iconfont')
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												// } else {
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												// 	classes.push(this.customPrefix)
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												// }
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												// 主题色,通过类配置
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												if (this.color && uni.$u.config.type.includes(this.color)) classes.push('u-icon__icon--' + this.color)
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												// 阿里,头条,百度小程序通过数组绑定类名时,无法直接使用[a, b, c]的形式,否则无法识别
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												// 故需将其拆成一个字符串的形式,通过空格隔开各个类名
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												//#ifdef MP-ALIPAY || MP-TOUTIAO || MP-BAIDU
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												classes = classes.join(' ')
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												//#endif
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												return classes
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											},
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											iconStyle() {
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												let style = {}
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												style = {
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													fontSize: uni.$u.addUnit(this.size),
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													lineHeight: uni.$u.addUnit(this.size),
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													fontWeight: this.bold ? 'bold' : 'normal',
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													// 某些特殊情况需要设置一个到顶部的距离,才能更好的垂直居中
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													top: uni.$u.addUnit(this.top)
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												}
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												// 非主题色值时,才当作颜色值
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												if (this.color && !uni.$u.config.type.includes(this.color)) style.color = this.color
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												return style
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											},
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											// 判断传入的name属性,是否图片路径,只要带有"/"均认为是图片形式
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											isImg() {
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												return this.name.indexOf('/') !== -1
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											},
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											imgStyle() {
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												let style = {}
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												// 如果设置width和height属性,则优先使用,否则使用size属性
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												style.width = this.width ? uni.$u.addUnit(this.width) : uni.$u.addUnit(this.size)
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												style.height = this.height ? uni.$u.addUnit(this.height) : uni.$u.addUnit(this.size)
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												return style
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											},
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											// 通过图标名,查找对应的图标
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											icon() {
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												// 如果内置的图标中找不到对应的图标,就直接返回name值,因为用户可能传入的是unicode代码
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												return icons['uicon-' + this.name] || this.name
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											}
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										},
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										methods: {
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											clickHandler(e) {
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												this.$emit('click', this.index)
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												// 是否阻止事件冒泡
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												this.stop && this.preventEvent(e)
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											}
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										}
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									}
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								</script>
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								<style lang="scss" scoped>
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									@import "../../libs/css/components.scss";
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									// 变量定义
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									$u-icon-primary: $u-primary !default;
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									$u-icon-success: $u-success !default;
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									$u-icon-info: $u-info !default;
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									$u-icon-warning: $u-warning !default;
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									$u-icon-error: $u-error !default;
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									$u-icon-label-line-height:1 !default;
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									/* #ifndef APP-NVUE */
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									// 非nvue下加载字体
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									@font-face {
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										font-family: 'uicon-iconfont';
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										src: url('https://at.alicdn.com/t/font_2225171_8kdcwk4po24.ttf') format('truetype');
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									}
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									/* #endif */
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									.u-icon {
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										/* #ifndef APP-NVUE */
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										display: flex;
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										/* #endif */
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										align-items: center;
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										&--left {
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											flex-direction: row-reverse;
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											align-items: center;
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										}
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										&--right {
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											flex-direction: row;
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											align-items: center;
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										}
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										&--top {
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											flex-direction: column-reverse;
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											justify-content: center;
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										}
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										&--bottom {
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											flex-direction: column;
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											justify-content: center;
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										}
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										&__icon {
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											font-family: uicon-iconfont;
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											position: relative;
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											@include flex;
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											align-items: center;
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											&--primary {
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												color: $u-icon-primary;
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											}
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											&--success {
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												color: $u-icon-success;
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											}
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											&--error {
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												color: $u-icon-error;
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											}
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											&--warning {
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												color: $u-icon-warning;
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											}
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											&--info {
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												color: $u-icon-info;
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											}
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										}
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										&__img {
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											/* #ifndef APP-NVUE */
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											height: auto;
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											will-change: transform;
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											/* #endif */
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										}
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										&__label {
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											/* #ifndef APP-NVUE */
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											line-height: $u-icon-label-line-height;
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											/* #endif */
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										}
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									}
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								</style>
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