From 10ded1b7d17a33448edca6036bd7f5f1807f14ee Mon Sep 17 00:00:00 2001
From: shaohuzhang1 <80892890+shaohuzhang1@users.noreply.github.com>
Date: Wed, 24 Sep 2025 15:36:52 +0800
Subject: [PATCH] feat: Loop body supports zooming in and out (#4099)

---
 .../loop-body-node/LoopBodyContainer.vue      | 47 ++++++++++---------
 ui/src/workflow/nodes/loop-body-node/index.ts | 11 +++++
 .../workflow/nodes/loop-body-node/index.vue   |  2 +-
 3 files changed, 36 insertions(+), 24 deletions(-)

diff --git a/ui/src/workflow/nodes/loop-body-node/LoopBodyContainer.vue b/ui/src/workflow/nodes/loop-body-node/LoopBodyContainer.vue
index 856ef20c3..06ace5c7e 100644
--- a/ui/src/workflow/nodes/loop-body-node/LoopBodyContainer.vue
+++ b/ui/src/workflow/nodes/loop-body-node/LoopBodyContainer.vue
@@ -5,7 +5,7 @@
       :class="{ isSelected: props.nodeModel.isSelected, error: node_status !== 200 }"
       style="overflow: visible; background: #fff"
     >
-      <div v-resize="resizeStepContainer">
+      <div>
         <div class="flex-between">
           <div class="flex align-center">
             <component
@@ -17,14 +17,14 @@
             <h4 class="ellipsis-1 break-all">{{ nodeModel.properties.stepName }}</h4>
           </div>
           <!-- 放大缩小按钮 -->
-          <!-- <el-button link @click="enlargeHandle">
+          <el-button link @click="enlargeHandle">
             <AppIcon
               :iconName="enlarge ? 'app-minify' : 'app-magnify'"
               class="color-secondary"
               style="font-size: 20px"
             >
             </AppIcon>
-          </el-button> -->
+          </el-button>
         </div>
         <el-collapse-transition>
           <div @mousedown.stop @keydown.stop @click.stop v-show="showNode" class="mt-16">
@@ -40,7 +40,10 @@
               show-icon
               :closable="false"
             />
-            <slot></slot>
+            <div :style="`height:${height}px`">
+              <slot></slot>
+            </div>
+
             <template v-if="nodeFields.length > 0">
               <h5 class="title-decoration-1 mb-8 mt-8">
                 {{ $t('common.param.outputParam') }}
@@ -115,16 +118,8 @@ import { ElMessage } from 'element-plus'
 import type { FormInstance } from 'element-plus'
 import { t } from '@/locales'
 import { WorkflowMode } from '@/enums/application'
+
 provide('workflowMode', WorkflowMode.ApplicationLoop)
-const height = ref<{
-  stepContainerHeight: number
-  inputContainerHeight: number
-  outputContainerHeight: number
-}>({
-  stepContainerHeight: 0,
-  inputContainerHeight: 0,
-  outputContainerHeight: 0,
-})
 
 const titleFormRef = ref()
 const nodeNameDialogVisible = ref<boolean>(false)
@@ -179,14 +174,7 @@ const mousedown = () => {
 }
 const showicon = ref<number | null>(null)
 
-const resizeStepContainer = (wh: any) => {
-  if (wh.height) {
-    if (!props.nodeModel.virtual) {
-      height.value.stepContainerHeight = wh.height
-      props.nodeModel.setHeight(height.value.stepContainerHeight)
-    }
-  }
-}
+const height = ref<number>(600)
 
 const props = defineProps<{
   nodeModel: any
@@ -211,9 +199,22 @@ const enlarge = ref(false)
 function enlargeHandle() {
   enlarge.value = !enlarge.value
   if (enlarge.value) {
-    // ...
+    props.nodeModel.graphModel.transformModel.focusOn(
+      props.nodeModel.x,
+      props.nodeModel.y,
+      props.nodeModel.width + 470,
+      props.nodeModel.height - 30,
+    )
+    height.value =
+      (props.nodeModel.graphModel.height - 100) / props.nodeModel.graphModel.transformModel.SCALE_Y
+    const width = window.innerWidth / props.nodeModel.graphModel.transformModel.SCALE_X
+    props.nodeModel.width = width
+    props.nodeModel.setHeight(height.value)
   } else {
-    // ...
+    height.value = 600
+    const width = 1920
+    props.nodeModel.width = width
+    props.nodeModel.setHeight(height.value)
   }
 }
 </script>
diff --git a/ui/src/workflow/nodes/loop-body-node/index.ts b/ui/src/workflow/nodes/loop-body-node/index.ts
index 839b7f0f6..fb34bf2e9 100644
--- a/ui/src/workflow/nodes/loop-body-node/index.ts
+++ b/ui/src/workflow/nodes/loop-body-node/index.ts
@@ -36,6 +36,17 @@ class LoopBodyModel extends AppNodeModel {
 
     return anchors
   }
+  setHeight(height: number) {
+    this.properties['height'] = height
+    this.outgoing.edges.forEach((edge: any) => {
+      // 调用自定义的更新方案
+      edge.updatePathByAnchor()
+    })
+    this.incoming.edges.forEach((edge: any) => {
+      // 调用自定义的更新方案
+      edge.updatePathByAnchor()
+    })
+  }
 }
 export default {
   type: 'loop-body-node',
diff --git a/ui/src/workflow/nodes/loop-body-node/index.vue b/ui/src/workflow/nodes/loop-body-node/index.vue
index 101904310..bc0330b59 100644
--- a/ui/src/workflow/nodes/loop-body-node/index.vue
+++ b/ui/src/workflow/nodes/loop-body-node/index.vue
@@ -1,6 +1,6 @@
 <template>
   <LoopBodyContainer :nodeModel="nodeModel">
-    <div ref="containerRef" @wheel.stop style="height: 600px"></div>
+    <div ref="containerRef" @wheel.stop style="height: 100%; width: 100%"></div>
   </LoopBodyContainer>
 </template>
 <script setup lang="ts">