feat：v1.4前端更新
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超凡
245
app/components/base/easy-loadimage.vue
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245
app/components/base/easy-loadimage.vue
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<template>
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<view class="easy-loadimage" :style="[boxStyle]" :id="uid">
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<image class="origin-img" :style="[imageRadius]" :src="imageSrc" mode="scaleToFill" v-if="loadImg&&!isLoadError"
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v-show="showImg" :class="{'no-transition':!openTransition,'show-transition':showTransition&&openTransition}"
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@load="handleImgLoad" @error="handleImgError">
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</image>
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<view class="loadfail-img" v-else-if="isLoadError"
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:style="{'background-image': `url(${urlDomain}crmebimage/presets/loadfail.png) no-repeat center`}"></view>
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<view :class="['loading-img',loadingMode]" v-show="!showImg&&!isLoadError"></view>
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</view>
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</template>
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<script>
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// +----------------------------------------------------------------------
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// | CRMEB [ CRMEB赋能开发者，助力企业发展 ]
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// +----------------------------------------------------------------------
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// | Copyright (c) 2016~2025 https://www.crmeb.com All rights reserved.
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// +----------------------------------------------------------------------
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// | Licensed CRMEB并不是自由软件，未经许可不能去掉CRMEB相关版权
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// +----------------------------------------------------------------------
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// | Author: CRMEB Team <admin@crmeb.com>
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// +----------------------------------------------------------------------
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import {
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throttle
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} from '@/utils/validate.js'
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// 生成全局唯一id
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function generateUUID() {
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return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
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let r = Math.random() * 16 | 0,
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v = c == 'x' ? r : (r & 0x3 | 0x8);
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return v.toString(16);
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})
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}
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export default {
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name: 'easyLoadimage',
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props: {
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imageSrc: {
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type: String || null,
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default () {
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return '';
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}
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},
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mode: {
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type: String,
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},
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loadingMode: {
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type: String,
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default: 'looming-gray'
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},
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openTransition: {
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type: Boolean,
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default: true,
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},
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viewHeight: {
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type: Number,
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default () {
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return uni.getSystemInfoSync().windowHeight;
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}
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},
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width: {
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type: String,
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default: ''
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},
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height: {
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type: String,
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default: ''
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},
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borderRadius: {
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type: String,
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default: ''
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},
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radius: {
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type: Number,
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default: 0
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},
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},
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data() {
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const that = this;
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return {
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urlDomain: this.$Cache.get("imgHost"),
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uid: 'uid-' + generateUUID(),
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loadImg: false,
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showImg: false,
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isLoadError: false,
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borderLoaded: 0,
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showTransition: false,
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scrollFn: throttle(function() {
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// 加载img时才执行滚动监听判断是否可加载
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if (that.loadImg || that.isLoadError) return;
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const id = that.uid
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const query = uni.createSelectorQuery().in(that);
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query.select('#' + id).boundingClientRect(data => {
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if (!data) return;
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if (data.top - that.viewHeight < 0) {
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that.loadImg = !!that.imageSrc;
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that.isLoadError = !that.loadImg;
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}
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}).exec()
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}, 200)
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}
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},
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computed: {
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boxStyle() {
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return {
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width: this.width,
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height: this.height,
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borderRadius: this.radius * 2 + 'rpx'
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}
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},
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imageRadius() {
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if (this.radius && this.radius > 0) {
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return {
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'border-radius': this.radius * 2 + 'rpx'
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}
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}
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}
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},
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methods: {
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init() {
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this.$nextTick(this.onScroll)
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},
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handleBorderLoad() {
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this.borderLoaded = 1;
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},
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handleBorderError() {
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this.borderLoaded = 2;
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},
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handleImgLoad(e) {
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this.showImg = true;
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setTimeout(() => {
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this.showTransition = true
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}, 50)
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},
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handleImgError(e) {
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this.isLoadError = true;
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},
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onScroll() {
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this.scrollFn();
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},
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},
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mounted() {
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this.init()
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uni.$on('scroll', this.scrollFn);
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this.onScroll()
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},
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beforeDestroy() {
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uni.$off('scroll', this.scrollFn);
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}
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}
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</script>
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<style scoped lang="scss">
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.easy-loadimage {
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width: 100%;
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height: 100%;
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overflow: hidden;
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}
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/* 官方优化图片tips */
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image {
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will-change: transform;
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overflow: hidden;
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object-fit: cover;
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}
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/* 渐变过渡效果处理 */
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image.origin-img {
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width: 100%;
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height: 100%;
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opacity: 0.3;
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/* max-height: 360rpx; */
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/* border-radius: 14rpx;
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overflow: hidden; */
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/* min-height: 360rpx; */
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}
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image.origin-img.show-transition {
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transition: opacity .5s;
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opacity: 1;
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}
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image.origin-img.no-transition {
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opacity: 1;
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}
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/* 加载失败、加载中的占位图样式控制 */
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.loadfail-img {
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height: 100%;
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background-size: 50%;
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}
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.loading-img {
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height: 100%;
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}
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/* 动态灰色若隐若现 */
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.looming-gray {
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animation: looming-gray 1s infinite linear;
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background-color: #e3e3e3;
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}
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@keyframes looming-gray {
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0% {
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background-color: #e3e3e3aa;
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}
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50% {
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background-color: #e3e3e3;
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}
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100% {
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background-color: #e3e3e3aa;
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}
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}
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/* 骨架屏1 */
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.skeleton-1 {
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background-color: #e3e3e3;
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background-image: linear-gradient(100deg, rgba(255, 255, 255, 0), rgba(255, 255, 255, 0.2) 50%, rgba(255, 255, 255, 0) 80%);
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background-size: 100rpx 100%;
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background-repeat: repeat-y;
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background-position: 0 0;
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animation: skeleton-1 .6s infinite;
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}
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@keyframes skeleton-1 {
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to {
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background-position: 200% 0;
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}
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}
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/* 骨架屏2 */
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.skeleton-2 {
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background-image: linear-gradient(-90deg, #fefefe 0%, #e6e6e6 50%, #fefefe 100%);
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background-size: 400% 400%;
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background-position: 0 0;
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animation: skeleton-2 1.2s ease-in-out infinite;
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}
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@keyframes skeleton-2 {
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to {
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background-position: -135% 0;
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}
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}
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</style>
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