fix: align image container sizing and page width consistency

- Set tool page max-width to 1400px to match remove_background page
- Fix single image view to use same sizing logic as comparison view
- Add dynamic size calculation for processing images to match result view
- Ensure images maintain aspect ratio instead of filling container width

apps/jingrow/frontend/src/views/HomePage.vue

@@ -49,6 +49,8 @@ const splitPosition = ref(0)
 const comparisonContainerRef = ref<HTMLElement | null>(null)
 const originalImageRef = ref<HTMLImageElement | null>(null)
 const resultImageRef = ref<HTMLImageElement | null>(null)
+const singleImageWrapperRef = ref<HTMLElement | null>(null)
+const singleImageRef = ref<HTMLImageElement | null>(null)
 const isDraggingSplitLine = ref(false)
 
 const handleDragEnter = (e: DragEvent) => {
@@ -236,6 +238,10 @@ const resetUpload = () => {
     comparisonContainerRef.value.style.width = ''
     comparisonContainerRef.value.style.height = ''
   }
+  if (singleImageWrapperRef.value) {
+    singleImageWrapperRef.value.style.width = ''
+    singleImageWrapperRef.value.style.height = ''
+  }
 }
 
 const adjustContainerSize = async () => {
@@ -243,43 +249,86 @@ const adjustContainerSize = async () => {
   // 等待多个渲染周期确保 DOM 完全更新
   await new Promise(resolve => setTimeout(resolve, 0))
   
+  // 处理对比视图容器
   const container = comparisonContainerRef.value
-  if (!container) return
-    
-  const img = originalImageRef.value || resultImageRef.value
-  if (!img) return
-    
-  const previewSection = container.closest('.preview-section') as HTMLElement
-  if (!previewSection) return
-    
-  // 使用 getBoundingClientRect 获取实际渲染尺寸
-  const previewRect = previewSection.getBoundingClientRect()
-  const padding = 24
-  const maxAvailableWidth = Math.max(0, previewRect.width - padding)
-  const maxAvailableHeight = Math.max(0, previewRect.height - padding)
+  if (container) {
+    const img = originalImageRef.value || resultImageRef.value
+    if (img) {
+      const previewSection = container.closest('.preview-section') as HTMLElement
+      if (previewSection) {
+        const previewRect = previewSection.getBoundingClientRect()
+        const padding = 24
+        const maxAvailableWidth = Math.max(0, previewRect.width - padding)
+        const maxAvailableHeight = Math.max(0, previewRect.height - padding)
+        
+        if (maxAvailableWidth > 0 && maxAvailableHeight > 0 && maxAvailableHeight >= 100) {
+          if (img.complete) {
+            const { naturalWidth, naturalHeight } = img
+            if (naturalWidth > 0 && naturalHeight > 0) {
+              const scale = Math.min(
+                maxAvailableWidth / naturalWidth,
+                maxAvailableHeight / naturalHeight,
+                1
+              )
+              container.style.width = `${naturalWidth * scale}px`
+              container.style.height = `${naturalHeight * scale}px`
+            }
+          } else {
+            img.addEventListener('load', adjustContainerSize, { once: true })
+          }
+        } else {
+          setTimeout(adjustContainerSize, 100)
+        }
+      }
+    }
+  }
   
-  // 如果高度为0或太小，多次重试
-  if (maxAvailableWidth <= 0 || maxAvailableHeight <= 0 || maxAvailableHeight < 100) {
-    setTimeout(adjustContainerSize, 100)
-    return
+  // 处理单图视图容器
+  const singleWrapper = singleImageWrapperRef.value
+  if (singleWrapper) {
+    const img = singleImageRef.value
+    if (img) {
+      const previewSection = singleWrapper.closest('.preview-section') as HTMLElement
+      if (previewSection) {
+        const previewRect = previewSection.getBoundingClientRect()
+        const padding = 24
+        const maxAvailableWidth = Math.max(0, previewRect.width - padding)
+        const maxAvailableHeight = Math.max(0, previewRect.height - padding)
+        
+        // 如果高度为0或太小，多次重试
+        if (maxAvailableWidth <= 0 || maxAvailableHeight <= 0 || maxAvailableHeight < 100) {
+          setTimeout(adjustContainerSize, 100)
+          return
+        }
+        
+        if (!img.complete) {
+          img.addEventListener('load', adjustContainerSize, { once: true })
+          return
+        }
+        
+        const { naturalWidth, naturalHeight } = img
+        if (naturalWidth === 0 || naturalHeight === 0) {
+          setTimeout(adjustContainerSize, 100)
+          return
+        }
+        
+        const scale = Math.min(
+          maxAvailableWidth / naturalWidth,
+          maxAvailableHeight / naturalHeight,
+          1
+        )
+        
+        singleWrapper.style.width = `${naturalWidth * scale}px`
+        singleWrapper.style.height = `${naturalHeight * scale}px`
+      } else {
+        // 如果找不到 preview-section，延迟重试
+        setTimeout(adjustContainerSize, 100)
+      }
+    } else {
+      // 如果图片还没有加载，延迟重试
+      setTimeout(adjustContainerSize, 100)
+    }
   }
-    
-  if (!img.complete) {
-    img.addEventListener('load', adjustContainerSize, { once: true })
-    return
-  }
-    
-  const { naturalWidth, naturalHeight } = img
-  if (naturalWidth === 0 || naturalHeight === 0) return
-    
-  const scale = Math.min(
-    maxAvailableWidth / naturalWidth,
-    maxAvailableHeight / naturalHeight,
-    1
-  )
-    
-  container.style.width = `${naturalWidth * scale}px`
-  container.style.height = `${naturalHeight * scale}px`
 }
 
 watch([uploadedImageUrl, resultImageUrl], adjustContainerSize, { immediate: true })
@@ -567,8 +616,10 @@ onUnmounted(() => {
                   </div>
                 </div>
                 <div v-else class="single-image-view">
-                  <div class="image-wrapper">
-                    <img :src="uploadedImageUrl" alt="原图" />
+                  <div class="image-wrapper" ref="singleImageWrapperRef">
+                    <div class="single-image-container">
+                      <img ref="singleImageRef" :src="uploadedImageUrl" alt="原图" @load="adjustContainerSize" />
+                    </div>
                     <div v-if="processing" class="processing-overlay">
                       <div class="spinner"></div>
                       <p>处理中...</p>
@@ -798,7 +849,10 @@ onUnmounted(() => {
   display: flex;
   flex-direction: column;
   flex: 1;
-  min-height: 600px; /* 设置最小高度确保容器足够大 */
+  min-height: 600px;
+  max-width: 1400px;
+  margin: 0 auto;
+  width: 100%;
 }
 
 .page-header {
@@ -1179,10 +1233,10 @@ onUnmounted(() => {
 
 .image-wrapper {
   position: relative;
-  width: 100%;
-  height: 100%;
+  display: inline-block;
   max-width: 100%;
   max-height: 100%;
+  min-height: 500px;
   overflow: hidden;
   border-radius: 8px;
   border: 1px solid #e5e7eb;
@@ -1193,15 +1247,25 @@ onUnmounted(() => {
     linear-gradient(-45deg, transparent 75%, #f1f5f9 75%);
   background-size: 20px 20px;
   background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
+}
+
+.single-image-container {
+  position: absolute;
+  top: 0;
+  left: 0;
+  width: 100%;
+  height: 100%;
   display: flex;
   align-items: center;
   justify-content: center;
-
+  
   img {
-    width: 100%;
-    height: 100%;
-    object-fit: contain;
     display: block;
+    max-width: 100%;
+    max-height: 100%;
+    width: auto;
+    height: auto;
+    object-fit: contain;
   }
 }