<template>
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<span :class="classes" :style="styles">
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<img :src="src" v-if="src" @error="handleError">
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<Icon :type="icon" :custom="customIcon" v-else-if="icon || customIcon"></Icon>
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<span ref="children" :class="[prefixCls + '-string']" :style="childrenStyle" v-else><slot></slot></span>
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</span>
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</template>
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<script>
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import Icon from '../icon';
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import { oneOf } from '../../utils/assist';
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const prefixCls = 'ivu-avatar';
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const sizeList = ['small', 'large', 'default'];
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export default {
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name: 'Avatar',
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components: { Icon },
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props: {
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shape: {
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validator (value) {
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return oneOf(value, ['circle', 'square']);
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},
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default: 'circle'
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},
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size: {
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type: [String, Number],
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default () {
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return !this.$IVIEW || this.$IVIEW.size === '' ? 'default' : this.$IVIEW.size;
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}
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},
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src: {
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type: String
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},
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icon: {
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type: String
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},
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customIcon: {
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type: String,
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default: ''
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},
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},
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data () {
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return {
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prefixCls: prefixCls,
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scale: 1,
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childrenWidth: 0,
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isSlotShow: false,
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slotTemp: null
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};
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},
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computed: {
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classes () {
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return [
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`${prefixCls}`,
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`${prefixCls}-${this.shape}`,
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{
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[`${prefixCls}-image`]: !!this.src,
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[`${prefixCls}-icon`]: !!this.icon || !!this.customIcon,
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[`${prefixCls}-${this.size}`]: oneOf(this.size, sizeList)
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}
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];
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},
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styles () {
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let style = {};
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if (this.size && !oneOf(this.size, sizeList)) {
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style.width = `${this.size}px`;
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style.height = `${this.size}px`;
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style.lineHeight = `${this.size}px`;
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style.fontSize = `${this.size/2}px`;
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}
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return style;
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},
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childrenStyle () {
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let style = {};
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if (this.isSlotShow) {
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style = {
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msTransform: `scale(${this.scale})`,
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WebkitTransform: `scale(${this.scale})`,
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transform: `scale(${this.scale})`,
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position: 'absolute',
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display: 'inline-block',
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left: `calc(50% - ${Math.round(this.childrenWidth / 2)}px)`
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};
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}
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return style;
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}
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},
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watch: {
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size (val, oldVal) {
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if (val !== oldVal) this.setScale();
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}
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},
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methods: {
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setScale () {
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this.isSlotShow = !this.src && !this.icon;
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if (this.$refs.children) {
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// set children width again to make slot centered
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this.childrenWidth = this.$refs.children.offsetWidth;
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const avatarWidth = this.$el.getBoundingClientRect().width;
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// add 4px gap for each side to get better performance
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if (avatarWidth - 8 < this.childrenWidth) {
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this.scale = (avatarWidth - 8) / this.childrenWidth;
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} else {
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this.scale = 1;
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}
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}
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},
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handleError (e) {
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this.$emit('on-error', e);
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}
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},
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beforeCreate () {
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this.slotTemp = this.$slots.default;
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},
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mounted () {
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this.setScale();
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},
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updated () {
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if (this.$slots.default !== this.slotTemp) {
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this.slotTemp = this.$slots.default;
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this.setScale();
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}
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}
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};
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</script>
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