From b7e96dec3899477a89d2d5588b859272ec7a1d77 Mon Sep 17 00:00:00 2001
From: 疯狂的狮子Li <15040126243@163.com>
Date: 星期四, 16 一月 2025 16:00:12 +0800
Subject: [PATCH] update 优化 工作流预览界面支持放大/缩放 移动拖拽
---
src/components/Process/approvalRecord.vue | 147 +++++++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 143 insertions(+), 4 deletions(-)
diff --git a/src/components/Process/approvalRecord.vue b/src/components/Process/approvalRecord.vue
index baf86a7..dc91bd7 100644
--- a/src/components/Process/approvalRecord.vue
+++ b/src/components/Process/approvalRecord.vue
@@ -2,8 +2,21 @@
<div class="container">
<el-dialog v-model="visible" draggable title="瀹℃壒璁板綍" :width="props.width" :height="props.height" :close-on-click-modal="false">
<el-tabs v-model="tabActiveName" class="demo-tabs">
- <el-tab-pane v-loading="loading" label="娴佺▼鍥�" name="bpmn">
- <img :src="imgUrl" width="100%" style="margin: 0 auto" />
+ <el-tab-pane v-loading="loading" label="娴佺▼鍥�" name="image">
+ <div
+ ref="imageWrapperRef"
+ class="image-wrapper"
+ @wheel="handleMouseWheel"
+ @mousedown="handleMouseDown"
+ @mousemove="handleMouseMove"
+ @mouseup="handleMouseUp"
+ @mouseleave="handleMouseLeave"
+ @dblclick="resetTransform"
+ :style="transformStyle"
+ >
+ <el-image :src="imgUrl" class="scalable-image" />
+ </div>
+<!-- <img :src="imgUrl" width="100%" style="margin: 0 auto" />-->
</el-tab-pane>
<el-tab-pane v-loading="loading" label="瀹℃壒淇℃伅" name="info">
<div>
@@ -72,14 +85,14 @@
const loading = ref(false);
const visible = ref(false);
const historyList = ref<Array<any>>([]);
-const tabActiveName = ref('bpmn');
+const tabActiveName = ref('image');
const imgUrl = ref('');
//鍒濆鍖栨煡璇㈠鎵硅褰�
const init = async (businessId: string | number) => {
visible.value = true;
loading.value = true;
- tabActiveName.value = 'bpmn';
+ tabActiveName.value = 'image';
historyList.value = [];
flowImage(businessId).then((resp) => {
if (resp.data) {
@@ -109,6 +122,111 @@
const handleDownload = (ossId: string) => {
proxy?.$download.oss(ossId);
};
+
+const imageWrapperRef = ref<HTMLElement | null>(null);
+const scale = ref(1); // 鍒濆缂╂斁姣斾緥
+const maxScale = 3; // 鏈�澶х缉鏀炬瘮渚�
+const minScale = 0.5; // 鏈�灏忕缉鏀炬瘮渚�
+
+let isDragging = false;
+let startX = 0;
+let startY = 0;
+let currentTranslateX = 0;
+let currentTranslateY = 0;
+
+const handleMouseWheel = (event: WheelEvent) => {
+ event.preventDefault();
+ let newScale = scale.value - event.deltaY / 1000;
+ newScale = Math.max(minScale, Math.min(newScale, maxScale));
+ if (newScale !== scale.value) {
+ scale.value = newScale;
+ resetDragPosition(); // 閲嶇疆鎷栨嫿浣嶇疆锛屼娇鍥剧墖灞呬腑
+ }
+};
+
+const handleMouseDown = (event: MouseEvent) => {
+ if (scale.value > 1) {
+ event.preventDefault(); // 闃绘榛樿琛屼负锛岄槻姝㈡嫋鎷�
+ isDragging = true;
+ startX = event.clientX;
+ startY = event.clientY;
+ }
+};
+
+const handleMouseMove = (event: MouseEvent) => {
+ if (!isDragging || !imageWrapperRef.value) return;
+
+ const deltaX = event.clientX - startX;
+ const deltaY = event.clientY - startY;
+ startX = event.clientX;
+ startY = event.clientY;
+
+ currentTranslateX += deltaX;
+ currentTranslateY += deltaY;
+
+ // 杈圭晫妫�娴嬶紝闃叉鍥剧墖琚嫋鍑哄鍣�
+ const bounds = getBounds();
+ if (currentTranslateX > bounds.maxTranslateX) {
+ currentTranslateX = bounds.maxTranslateX;
+ } else if (currentTranslateX < bounds.minTranslateX) {
+ currentTranslateX = bounds.minTranslateX;
+ }
+
+ if (currentTranslateY > bounds.maxTranslateY) {
+ currentTranslateY = bounds.maxTranslateY;
+ } else if (currentTranslateY < bounds.minTranslateY) {
+ currentTranslateY = bounds.minTranslateY;
+ }
+
+ applyTransform();
+};
+
+const handleMouseUp = () => {
+ isDragging = false;
+};
+
+const handleMouseLeave = () => {
+ isDragging = false;
+};
+
+const resetTransform = () => {
+ scale.value = 1;
+ currentTranslateX = 0;
+ currentTranslateY = 0;
+ applyTransform();
+};
+
+const resetDragPosition = () => {
+ currentTranslateX = 0;
+ currentTranslateY = 0;
+ applyTransform();
+};
+
+const applyTransform = () => {
+ if (imageWrapperRef.value) {
+ imageWrapperRef.value.style.transform = `translate(${currentTranslateX}px, ${currentTranslateY}px) scale(${scale.value})`;
+ }
+};
+
+const getBounds = () => {
+ if (!imageWrapperRef.value) return { minTranslateX: 0, maxTranslateX: 0, minTranslateY: 0, maxTranslateY: 0 };
+
+ const imgRect = imageWrapperRef.value.getBoundingClientRect();
+ const containerRect = imageWrapperRef.value.parentElement?.getBoundingClientRect() ?? imgRect;
+
+ const minTranslateX = (containerRect.width - imgRect.width * scale.value) / 2;
+ const maxTranslateX = -(containerRect.width - imgRect.width * scale.value) / 2;
+ const minTranslateY = (containerRect.height - imgRect.height * scale.value) / 2;
+ const maxTranslateY = -(containerRect.height - imgRect.height * scale.value) / 2;
+
+ return { minTranslateX, maxTranslateX, minTranslateY, maxTranslateY };
+};
+
+const transformStyle = computed(() => ({
+ transition: isDragging ? 'none' : 'transform 0.2s ease',
+}));
+
+
/**
* 瀵瑰鏆撮湶瀛愮粍浠舵柟娉�
*/
@@ -137,4 +255,25 @@
min-height: calc(100vh - 170px) !important;
}
}
+
+.image-wrapper {
+ width: 100%;
+ height: 100%;
+ overflow: hidden;
+ position: relative;
+ margin: 0 auto;
+ display: flex;
+ justify-content: center;
+ align-items: center;
+ user-select: none; /* 绂佺敤鏂囨湰閫夋嫨 */
+ cursor: grab; /* 璁剧疆鍒濆榧犳爣鎸囬拡涓哄彲鎷栧姩 */
+}
+
+.image-wrapper:active {
+ cursor: grabbing; /* 褰撴鍦ㄦ嫋鍔ㄦ椂鏀瑰彉榧犳爣鎸囬拡 */
+}
+
+.scalable-image {
+ width: 100%;
+}
</style>
--
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