[完善] 重叠头像组件

components/lf-nolanPhoto/lf-nolanPhoto.vue

@@ -1,24 +1,68 @@
 <template>
 	<view class="content">
-		<view class="image-item" v-for="item in 5" :key="item">
-			<image src="https://picsum.photos/200"></image>
+		<block v-if="show">
+			<view class="image-item" 
+				v-for="(item, index) in list" :key="index" 
+				v-if="(index+1) < count"
+				@click="clickImage(index)">
+				<image :src="item"></image>
 			</view>
+			<view class="image-item image-surplus" 
+				:style="{'background': themeColor}" 
+				v-if="list.length > count">
+				<text>{{ surplusNum }}</text>
+			</view>
+		</block>
 	</view>
 </template>
 
 <script>
 	export default {
+		props: {
+			list: {
+				type: Array,
+				default: function(){
+					return [
+						"https://picsum.photos/200",
+						"https://picsum.photos/210",
+						"https://picsum.photos/220",
+						"https://picsum.photos/230",
+						"https://picsum.photos/240"
+					]
+				}
+			},
+			themeColor: {
+				type: String,
+				default: '#E21196'
+			}
+		},
 		data(){
 			return {
-				
+				show: false,
+				count: 0
 			}
 		},
-		onLoad(){
-			// TODO 优化当头像数量超过盒子大小时最后一个元素显示+剩余多少张
-			// 参考：http://www.bootstrapmb.com/item/2739
+		computed: {
+			surplusNum(){
+				let num = this.$props.list.length - this.count;
+				num = Math.floor(num);
+				num = num > 99 ? '99+' : '+'+ num;
+				return num;
+			}
+		},
+		mounted(){
+			let that = this;
+			let info = uni.createSelectorQuery().in(this).select(".content");
+			info.boundingClientRect(function(data) { 
+				let count = Math.floor( parseInt(data.width) / 23 - 1 ); // 预留一个位置出来
+				that.count = count; 
+				that.show = true;
+			}).exec();
 		},
 		methods: {
-			
+			clickImage(index){
+				this.$emit('click', index);
+			}
 		}
 	}
 </script>
@@ -28,7 +72,7 @@
 		display: flex;
 		flex-wrap: nowrap;
 		width: 100%;
-		height: 60rpx;
+		height: max-content;
 		margin-top: 20rpx;
 		.image-item{
 			width: 60rpx;
@@ -44,5 +88,13 @@
 				height: 100%;
 			}
 		}
+		.image-surplus{
+			border: none;
+			display: flex;
+			justify-content: center;
+			align-items: center;
+			color: #FFFFFF;
+			font-size: 20rpx;
+		}
 	}
 </style>