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