fix: 解决聊天页面图片复制失败的问题和点击编辑回复的时候，不显示图片url的问题 (#4496)

* fix: 解决聊天页面图片复制失败的问题和点击编辑回复的时候，不显示图片url的问题

* fix: 解决chat模式，gemini-2.0-flash-exp-image-generation返回base64图片，无法复制的问题

* fix(MessageImage): Update the image copying feature to process base64 and URL formatted images based on their type

---------

Co-authored-by: magicdmer <magicdmer@163.com>
Co-authored-by: eeee0717 <chentao020717Work@outlook.com>

src/renderer/src/pages/home/Messages/MessageImage.tsx

@@ -36,34 +36,50 @@ const MessageImage: FC<Props> = ({ message }) => {
     }
   }
 
-  // 复制 base64 图片到剪贴板
-  const onCopy = async (imageBase64: string) => {
+  // 复制图片到剪贴板
+  const onCopy = async (type: string, image: string) => {
     try {
-      const base64Data = imageBase64.split(',')[1]
-      const mimeType = imageBase64.split(';')[0].split(':')[1]
-
+      switch (type) {
+        case 'base64': {
+          // 处理 base64 格式的图片
+          const parts = image.split(';base64,')
+          if (parts.length === 2) {
+            const mimeType = parts[0].replace('data:', '')
+            const base64Data = parts[1]
             const byteCharacters = atob(base64Data)
             const byteArrays: Uint8Array[] = []
 
-      for (let i = 0; i < byteCharacters.length; i += 512) {
-        const slice = byteCharacters.slice(i, i + 512)
-
+            for (let offset = 0; offset < byteCharacters.length; offset += 512) {
+              const slice = byteCharacters.slice(offset, offset + 512)
               const byteNumbers = new Array(slice.length)
-        for (let j = 0; j < slice.length; j++) {
-          byteNumbers[j] = slice.charCodeAt(j)
+              for (let i = 0; i < slice.length; i++) {
+                byteNumbers[i] = slice.charCodeAt(i)
               }
-
               const byteArray = new Uint8Array(byteNumbers)
               byteArrays.push(byteArray)
             }
 
             const blob = new Blob(byteArrays, { type: mimeType })
+            await navigator.clipboard.write([new ClipboardItem({ [mimeType]: blob })])
+          } else {
+            throw new Error('无效的 base64 图片格式')
+          }
+          break
+        }
+        case 'url':
+          {
+            // 处理 URL 格式的图片
+            const response = await fetch(image)
+            const blob = await response.blob()
 
             await navigator.clipboard.write([
               new ClipboardItem({
                 [blob.type]: blob
               })
             ])
+          }
+          break
+      }
 
       window.message.success(t('message.copy.success'))
     } catch (error) {
@@ -95,7 +111,7 @@ const MessageImage: FC<Props> = ({ message }) => {
                 <ZoomOutOutlined disabled={scale === 1} onClick={onZoomOut} />
                 <ZoomInOutlined disabled={scale === 50} onClick={onZoomIn} />
                 <UndoOutlined onClick={onReset} />
-                <CopyOutlined onClick={() => onCopy(image)} />
+                <CopyOutlined onClick={() => onCopy(message.metadata?.generateImage?.type!, image)} />
                 <DownloadOutlined onClick={() => onDownload(image, index)} />
               </ToobarWrapper>
             )

src/renderer/src/pages/home/Messages/MessageMenubar.tsx

@@ -112,6 +112,14 @@ const MessageMenubar: FC<Props> = (props) => {
 
     let textToEdit = message.content
 
+    // 如果是包含图片的消息，添加图片的 markdown 格式
+    if (message.metadata?.generateImage?.images) {
+      const imageMarkdown = message.metadata.generateImage.images
+        .map((image, index) => `![image-${index}](${image})`)
+        .join('\n')
+      textToEdit = `${textToEdit}\n\n${imageMarkdown}`
+    }
+
     if (message.role === 'assistant' && message.model && isReasoningModel(message.model)) {
       const processedMessage = withMessageThought(clone(message))
       textToEdit = processedMessage.content
@@ -135,8 +143,40 @@ const MessageMenubar: FC<Props> = (props) => {
     })
 
     if (editedText && editedText !== textToEdit) {
-      await editMessage(message.id, { content: editedText })
-      resendMessage && handleResendUserMessage({ ...message, content: editedText })
+      // 解析编辑后的文本，提取图片 URL
+      const imageRegex = /!\[image-\d+\]\((.*?)\)/g
+      const imageUrls: string[] = []
+      let match
+      let content = editedText
+      
+      while ((match = imageRegex.exec(editedText)) !== null) {
+        imageUrls.push(match[1])
+        content = content.replace(match[0], '')
+      }
+      
+      // 更新消息内容，保留图片信息
+      await editMessage(message.id, { 
+        content: content.trim(),
+        metadata: {
+          ...message.metadata,
+          generateImage: imageUrls.length > 0 ? {
+            type: 'url',
+            images: imageUrls
+          } : undefined
+        }
+      })
+      
+      resendMessage && handleResendUserMessage({ 
+        ...message, 
+        content: content.trim(),
+        metadata: {
+          ...message.metadata,
+          generateImage: imageUrls.length > 0 ? {
+            type: 'url',
+            images: imageUrls
+          } : undefined
+        }
+      })
     }
   }, [message, editMessage, handleResendUserMessage, t])