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| <template>
| <view
| class="cl-image"
| :style="[imgStyle, baseStyle]"
| :class="[
| {
| 'is-round': round,
| 'is-error': !src || isError,
| },
| ]"
| @tap="onPreview"
| >
| <view class="cl-image__placeholder" v-if="!src">
| <slot name="placeholder">
| <text class="icon cl-icon-image"></text>
| </slot>
| </view>
|
| <view class="cl-image__error" v-else-if="isError">
| <slot name="error">
| <text class="icon cl-icon-toast-warning"></text>
| </slot>
| </view>
|
| <template v-else>
| <view class="cl-image__loading" v-if="isLoading && showLoading">
| <cl-loading />
| </view>
|
| <image
| class="cl-image__target"
| :src="src"
| :mode="mode"
| :lazy-load="lazyLoad"
| :webp="webp"
| :show-menu-by-longpress="showMenuByLongpress"
| @error="handleError"
| @load="handleLoad"
| />
|
| <slot></slot>
| </template>
| </view>
| </template>
|
| <script lang="ts">
| import { type PropType, computed, defineComponent, ref, watch } from "vue";
| import { isNumber, isArray, isString, isNaN } from "lodash-es";
| import { parseRpx } from "/@/cool/utils";
| import { useStyle } from "../../hooks";
|
| export default defineComponent({
| name: "cl-image",
|
| props: {
| // 图片地址
| src: String,
| // 图片裁剪、缩放的模式
| mode: {
| type: String,
| default: "aspectFill",
| },
| // 图片大小
| size: {
| type: [String, Number, Array],
| default: "100%",
| },
| // 是否圆角
| round: Boolean,
| // 当前预览值
| previewCurrent: String,
| // 预览列表
| previewList: Array as PropType<string[]>,
| // 懒加载
| lazyLoad: Boolean,
| fadeShow: {
| type: Boolean,
| default: true,
| },
| webp: Boolean,
| showMenuByLongpress: Boolean,
| showLoading: {
| type: Boolean,
| default: true,
| },
| },
|
| setup(props, { emit }) {
| // 是否加载失败
| const isError = ref(false);
|
| // 是否加载中
| const isLoading = ref(false);
|
| // 样式
| const imgStyle = computed(() => {
| const [height, width] = size.value;
|
| let minWidth = "0";
| let minHeight = "0";
|
| // 不是有效高
| if (isNaN(parseInt(height))) {
| minHeight = width;
| }
|
| // 不是有效宽
| if (isNaN(parseInt(width))) {
| minWidth = height;
| }
|
| return {
| height,
| width,
| minWidth,
| minHeight,
| };
| });
|
| // 尺寸
| const size = computed(() => {
| let size: any = ["100%", "100%"];
|
| if (isString(props.size) || isNumber(props.size)) {
| size = [props.size, props.size];
| } else if (isArray(props.size)) {
| size = props.size;
| }
|
| return size.map(parseRpx);
| });
|
| // 加载失败
| function handleError(e: Event) {
| isError.value = true;
| isLoading.value = false;
| emit("error", e);
| }
|
| // 加载成功
| function handleLoad(e: Event) {
| isError.value = false;
| isLoading.value = false;
| emit("load", e);
| }
|
| // 点击是否预览图片
| function onPreview(e: Event) {
| if (props.previewList) {
| uni.previewImage({
| urls: props.previewList || [],
| current: props.previewCurrent || props.src,
| });
|
| e.stopPropagation();
| }
| }
|
| watch(
| () => props.src,
| (val) => {
| isLoading.value = !!val;
| isError.value = false;
| },
| {
| immediate: true,
| },
| );
|
| return {
| isError,
| isLoading,
| size,
| imgStyle,
| handleError,
| handleLoad,
| onPreview,
| ...useStyle(),
| };
| },
| });
| </script>
|
|
