ow
This commit is contained in:
1 parent
f1e6e116c3
commit
05ca116194
8 files changed
+519
-52
No files matched your search
@@ -1,4 +1,5 @@
|
||||
<script setup lang="ts">
|
||||
import type { TransitionPreset } from "uview-pro/types";
|
||||
import type { PropType } from "vue";
|
||||
import { $u } from "uview-pro";
|
||||
import { reactive } from "vue";
|
||||
@@ -50,7 +51,7 @@ const background = reactive({
|
||||
* 动画结束又消失——这就是切 tab 时「底部闪一下」的来源;H5 由 CSS 控制滚动条、小程序无此机制,故只有 App 闪。
|
||||
* H5/小程序保留原来的侧滑观感。
|
||||
*/
|
||||
let enterTransition = "slide-left";
|
||||
let enterTransition: TransitionPreset = "slide-left";
|
||||
// #ifdef APP-PLUS || APP-HARMONY
|
||||
enterTransition = "fade";
|
||||
// #endif
|
||||
|
||||
@@ -0,0 +1,343 @@
|
||||
<script setup lang="ts">
|
||||
/**
|
||||
* 网盘图片查看器(自绘全屏,替代 uni.previewImage 的慢链路):
|
||||
* 打开秒显列表已缓存的缩略图(thumb),原图按需拉取——顶部「高清」文字钮触发
|
||||
* 页面注入的 loadFull(分片拼整 + 落盘),就绪后立即原地替换为高清图。
|
||||
* 顶部工具组(左旋/右旋/放大/缩小/高清/关闭):旋转与缩放是每张图独立状态,
|
||||
* 换图后各自恢复;旋转字形为自绘 SVG(utils/rotateGlyph,图标库无旋转语义)。
|
||||
* 缩略图缺失(老文件没有 Scale 图)时打开即自动拉原图兜底。
|
||||
* 关闭时回收 H5 blob: 地址(App 端是落盘文件路径,留着下次预览复用)。
|
||||
* 组件不认识 service/记录类型:原图加载器由页面以函数注入(与 admin 组件「不认识 service」约定一致)。
|
||||
*/
|
||||
import { useLocale } from "uview-pro";
|
||||
import { computed, ref, watch } from "vue";
|
||||
import { rotateLeftGlyph, rotateRightGlyph } from "@/utils/rotateGlyph";
|
||||
|
||||
export interface ImageViewerItem {
|
||||
/** 列表缩略图直链(列表已加载过,秒显);空则打开时自动拉原图 */
|
||||
thumb?: string;
|
||||
/** 原图按需加载器:页面注入,返回可播放地址(App 落盘路径 / H5 blob / 小程序本地路径) */
|
||||
loadFull?: () => Promise<string>;
|
||||
/** 展示名(顶部信息位) */
|
||||
name?: string;
|
||||
}
|
||||
|
||||
interface Slot {
|
||||
/** 当前显示地址(缩略图或已加载的原图) */
|
||||
src: string;
|
||||
/** 已加载的原图地址(未拉取为 undefined) */
|
||||
full?: string;
|
||||
/** 原图拉取在途标记 */
|
||||
loading: boolean;
|
||||
/** 当前图旋转角(左旋 -90 / 右旋 +90 累积,模 360) */
|
||||
rotate: number;
|
||||
/** 当前图缩放倍率(放大 ×1.25 / 缩小 ÷1.25,0.6~4 之间) */
|
||||
scale: number;
|
||||
}
|
||||
|
||||
const props = withDefaults(
|
||||
defineProps<{
|
||||
visible: boolean;
|
||||
items?: ImageViewerItem[];
|
||||
}>(),
|
||||
{ items: () => [] },
|
||||
);
|
||||
|
||||
const emit = defineEmits<{
|
||||
/** 点关闭按钮 */
|
||||
(e: "close"): void;
|
||||
}>();
|
||||
|
||||
// 旋转字形恒白,模块级生成一次(custom-icon.md:颜色固定 → 模块级 const)
|
||||
const rotateLeftIcon = rotateLeftGlyph("#ffffff");
|
||||
const rotateRightIcon = rotateRightGlyph("#ffffff");
|
||||
|
||||
const { t } = useLocale();
|
||||
|
||||
const slots = ref<Slot[]>([]);
|
||||
const index = ref(0);
|
||||
|
||||
watch(
|
||||
() => props.visible,
|
||||
(v) => {
|
||||
if (v) {
|
||||
index.value = 0;
|
||||
slots.value = (props.items ?? []).map(item => ({
|
||||
src: item.thumb || "",
|
||||
full: undefined,
|
||||
loading: false,
|
||||
rotate: 0,
|
||||
scale: 1,
|
||||
}));
|
||||
// 没有缩略图的老文件:打开即自动拉原图兜底,不留白等用户点按钮
|
||||
slots.value.forEach((_, i) => {
|
||||
if (!slots.value[i].src) {
|
||||
loadOriginal(i);
|
||||
}
|
||||
});
|
||||
}
|
||||
else {
|
||||
revokeBlobs();
|
||||
// 关窗即释放高清地址:App 端是 data: URI(一张图几 MB),多图连览不能积压
|
||||
slots.value = [];
|
||||
}
|
||||
},
|
||||
);
|
||||
|
||||
/** 关闭时回收 H5 blob: 地址;App/小程序是本地文件路径,不处理(App 落盘文件正好当下次缓存) */
|
||||
function revokeBlobs(): void {
|
||||
// #ifdef H5
|
||||
slots.value.forEach((slot) => {
|
||||
if (slot.full && slot.full.startsWith("blob:")) {
|
||||
URL.revokeObjectURL(slot.full);
|
||||
}
|
||||
});
|
||||
// #endif
|
||||
}
|
||||
|
||||
function onSwipeChange(e: any): void {
|
||||
index.value = e?.detail?.current ?? 0;
|
||||
}
|
||||
|
||||
/** 左旋/右旋:每图独立累积角,模 360 防无限增长 */
|
||||
function rotateCurrent(delta: number): void {
|
||||
const slot = slots.value[index.value];
|
||||
if (!slot) {
|
||||
return;
|
||||
}
|
||||
slot.rotate = (slot.rotate + delta) % 360;
|
||||
}
|
||||
|
||||
/** 放大/缩小:倍率夹在 0.6~4,超出范围按钮照点不生效(变换仍平滑) */
|
||||
function zoomCurrent(factor: number): void {
|
||||
const slot = slots.value[index.value];
|
||||
if (!slot) {
|
||||
return;
|
||||
}
|
||||
slot.scale = Math.min(4, Math.max(0.6, slot.scale * factor));
|
||||
}
|
||||
|
||||
/** 高清钮文案:拉取中 / 已高清 / 高清 */
|
||||
const buttonText = computed(() => {
|
||||
const slot = slots.value[index.value];
|
||||
if (!slot) {
|
||||
return t("FilePage.previewOriginal");
|
||||
}
|
||||
if (slot.loading) {
|
||||
return t("FilePage.previewOriginalLoading");
|
||||
}
|
||||
return slot.full ? t("FilePage.previewOriginalLoaded") : t("FilePage.previewOriginal");
|
||||
});
|
||||
|
||||
/** 拉取中/已加载时禁用高清钮,避免重复触发 */
|
||||
const buttonDisabled = computed(() => {
|
||||
const slot = slots.value[index.value];
|
||||
return !slot || slot.loading || !!slot.full;
|
||||
});
|
||||
|
||||
/** 按需拉原图:成功后立即原地替换当前图(同一 image 换 src 即重载,高清及时切换) */
|
||||
async function loadOriginal(i = index.value): Promise<void> {
|
||||
const item = props.items?.[i];
|
||||
const slot = slots.value[i];
|
||||
if (!item || !slot || slot.loading || slot.full || !item.loadFull) {
|
||||
return;
|
||||
}
|
||||
slot.loading = true;
|
||||
try {
|
||||
const url = await item.loadFull();
|
||||
slot.full = url;
|
||||
slot.src = url;
|
||||
}
|
||||
catch (error: any) {
|
||||
uni.showToast({
|
||||
title: error?.message || t("FilePage.previewOriginalFail"),
|
||||
icon: "none",
|
||||
});
|
||||
}
|
||||
finally {
|
||||
slot.loading = false;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* 图片解码失败兜底:高清源打不开(路径不被 image 组件识别/格式不支持)就退回缩略图,
|
||||
* 不让用户对着黑屏;同时清掉 full 让高清钮回到可重试状态
|
||||
*/
|
||||
function onImageError(i: number): void {
|
||||
const slot = slots.value[i];
|
||||
const item = props.items?.[i];
|
||||
if (!slot || !item || !slot.full || slot.src !== slot.full) {
|
||||
return;
|
||||
}
|
||||
slot.src = item.thumb || "";
|
||||
slot.full = undefined;
|
||||
uni.showToast({
|
||||
title: t("FilePage.previewOriginalFail"),
|
||||
icon: "none",
|
||||
});
|
||||
}
|
||||
</script>
|
||||
|
||||
<template>
|
||||
<view v-if="visible" class="iv" @touchmove.stop.prevent>
|
||||
<!-- 顶部:计数 + 工具组(左旋/右旋/放大/缩小/高清/关闭,状态栏避让同 photo-slide-player 口径) -->
|
||||
<view class="iv-top">
|
||||
<text class="iv-count">
|
||||
{{ index + 1 }} / {{ slots.length }}
|
||||
</text>
|
||||
<view class="iv-tools">
|
||||
<view class="iv-tool" @click="rotateCurrent(-90)">
|
||||
<image class="iv-tool-img" :src="rotateLeftIcon" mode="aspectFit" />
|
||||
</view>
|
||||
<view class="iv-tool" @click="rotateCurrent(90)">
|
||||
<image class="iv-tool-img" :src="rotateRightIcon" mode="aspectFit" />
|
||||
</view>
|
||||
<view class="iv-tool" @click="zoomCurrent(1.25)">
|
||||
<u-icon name="plus" size="40" color="#ffffff" />
|
||||
</view>
|
||||
<view class="iv-tool" @click="zoomCurrent(0.8)">
|
||||
<u-icon name="minus" size="40" color="#ffffff" />
|
||||
</view>
|
||||
<!-- 高清用文字(需求约定),拉取中/已加载禁用 -->
|
||||
<view
|
||||
class="iv-tool iv-tool--text"
|
||||
:class="{ 'is-disabled': buttonDisabled }"
|
||||
@click="loadOriginal()"
|
||||
>
|
||||
<text class="iv-tool-text">
|
||||
{{ buttonText }}
|
||||
</text>
|
||||
</view>
|
||||
<view class="iv-tool" @click="emit('close')">
|
||||
<u-icon name="close" size="40" color="#ffffff" />
|
||||
</view>
|
||||
</view>
|
||||
</view>
|
||||
|
||||
<!-- 图区:左右滑动连览,每张按「缩略图 → 高清」渐进升级,旋转/缩放按图独立 -->
|
||||
<swiper class="iv-swiper" :current="index" @change="onSwipeChange">
|
||||
<swiper-item v-for="(slot, i) in slots" :key="i" class="iv-pane">
|
||||
<image
|
||||
v-if="slot.src"
|
||||
class="iv-img"
|
||||
:src="slot.src"
|
||||
mode="aspectFit"
|
||||
:style="{ transform: `rotate(${slot.rotate}deg) scale(${slot.scale})` }"
|
||||
@error="onImageError(i)"
|
||||
/>
|
||||
<!-- 缩略图缺失时的拉取占位(打开即自动拉原图,这里只在途提示) -->
|
||||
<view v-else class="iv-wait">
|
||||
<text class="iv-wait-text">
|
||||
{{ t("FilePage.previewOriginalLoading") }}
|
||||
</text>
|
||||
</view>
|
||||
</swiper-item>
|
||||
</swiper>
|
||||
</view>
|
||||
</template>
|
||||
|
||||
<style lang="scss" scoped>
|
||||
.iv {
|
||||
position: fixed;
|
||||
inset: 0;
|
||||
z-index: 999;
|
||||
display: flex;
|
||||
flex-direction: column;
|
||||
background: rgba(0, 0, 0, 0.96);
|
||||
}
|
||||
|
||||
/* ===== 顶部栏 ===== */
|
||||
.iv-top {
|
||||
display: flex;
|
||||
align-items: center;
|
||||
justify-content: space-between;
|
||||
/* App 端状态栏透明且不占位,用 uni 注入的 --status-bar-height 避让;H5 用 safe-area */
|
||||
/* #ifdef APP-PLUS */
|
||||
padding-top: calc(24rpx + var(--status-bar-height, 0px));
|
||||
/* #endif */
|
||||
/* #ifndef APP-PLUS */
|
||||
padding-top: calc(24rpx + env(safe-area-inset-top));
|
||||
/* #endif */
|
||||
padding-right: 24rpx;
|
||||
padding-bottom: 16rpx;
|
||||
padding-left: 32rpx;
|
||||
}
|
||||
|
||||
.iv-count {
|
||||
font-size: 28rpx;
|
||||
color: rgba(255, 255, 255, 0.85);
|
||||
}
|
||||
|
||||
.iv-tools {
|
||||
display: flex;
|
||||
align-items: center;
|
||||
gap: 20rpx;
|
||||
}
|
||||
|
||||
/* 工具钮:圆形半透明底;高清/关闭同款容器保证对齐 */
|
||||
.iv-tool {
|
||||
display: flex;
|
||||
align-items: center;
|
||||
justify-content: center;
|
||||
width: 72rpx;
|
||||
height: 72rpx;
|
||||
border-radius: 50%;
|
||||
background: rgba(255, 255, 255, 0.14);
|
||||
}
|
||||
|
||||
.iv-tool-img {
|
||||
width: 40rpx;
|
||||
height: 40rpx;
|
||||
}
|
||||
|
||||
/* 高清文字钮:胶囊底,宽随文案 */
|
||||
.iv-tool--text {
|
||||
width: auto;
|
||||
padding: 0 28rpx;
|
||||
border: 2rpx solid rgba(255, 255, 255, 0.45);
|
||||
border-radius: 999rpx;
|
||||
}
|
||||
|
||||
.iv-tool-text {
|
||||
font-size: 26rpx;
|
||||
color: #ffffff;
|
||||
white-space: nowrap;
|
||||
}
|
||||
|
||||
.iv-tool.is-disabled {
|
||||
opacity: 0.55;
|
||||
}
|
||||
|
||||
/* ===== 图区 ===== */
|
||||
.iv-swiper {
|
||||
flex: 1;
|
||||
min-height: 0;
|
||||
width: 100%;
|
||||
}
|
||||
|
||||
.iv-pane {
|
||||
display: flex;
|
||||
align-items: center;
|
||||
justify-content: center;
|
||||
width: 100%;
|
||||
height: 100%;
|
||||
}
|
||||
|
||||
.iv-img {
|
||||
width: 100%;
|
||||
height: 100%;
|
||||
/* 旋转/缩放平滑过渡(0.25s 足够跟手又不会显得迟滞) */
|
||||
transition: transform 0.25s ease;
|
||||
}
|
||||
|
||||
.iv-wait {
|
||||
display: flex;
|
||||
align-items: center;
|
||||
justify-content: center;
|
||||
}
|
||||
|
||||
.iv-wait-text {
|
||||
font-size: 26rpx;
|
||||
color: rgba(255, 255, 255, 0.6);
|
||||
}
|
||||
</style>
|
||||
Reference in new issue
Block a user