feat: 增加保存会话为图片的功能 (#374)

package.json

@@ -26,6 +26,7 @@
     "@traptitech/markdown-it-katex": "^3.6.0",
     "@vueuse/core": "^9.13.0",
     "highlight.js": "^11.7.0",
+    "html2canvas": "^1.4.1",
     "katex": "^0.16.4",
     "markdown-it": "^13.0.1",
     "naive-ui": "^2.34.3",

src/locales/en-US.ts

@@ -21,6 +21,10 @@ export default {
     copyCode: 'Copy Code',
     clearChat: 'Clear Chat',
     clearChatConfirm: 'Are you sure to clear this chat?',
+    exportImage: 'Export Image',
+    exportImageConfirm: 'Are you sure to export this chat to png?',
+    exportSuccess: 'Export Success',
+    exportFailed: 'Export Failed',
     deleteMessage: 'Delete Message',
     deleteMessageConfirm: 'Are you sure to delete this message?',
     deleteHistoryConfirm: 'Are you sure to clear this history?',

src/locales/zh-CN.ts

@@ -21,6 +21,10 @@ export default {
     copyCode: '复制代码',
     clearChat: '清空会话',
     clearChatConfirm: '是否清空会话?',
+    exportImage: '保存会话到图片',
+    exportImageConfirm: '是否将会话保存为图片?',
+    exportSuccess: '保存成功',
+    exportFailed: '保存失败',
     deleteMessage: '删除消息',
     deleteMessageConfirm: '是否删除此消息?',
     deleteHistoryConfirm: '确定删除此记录?',

src/locales/zh-TW.ts

@@ -21,6 +21,10 @@ export default {
     copyCode: '複製代碼',
     clearChat: '清空對話',
     clearChatConfirm: '是否清空對話?',
+    exportImage: '儲存對話為圖片',
+    exportImageConfirm: '是否將對話儲存為圖片?',
+    exportSuccess: '儲存成功',
+    exportFailed: '儲存失敗',
     deleteMessage: '刪除訊息',
     deleteMessageConfirm: '是否刪除此訊息?',
     deleteHistoryConfirm: '確定刪除此紀錄?',

src/views/chat/index.vue

@@ -1,7 +1,8 @@
 <script setup lang='ts'>
 import { computed, onMounted, onUnmounted, ref } from 'vue'
 import { useRoute } from 'vue-router'
-import { NButton, NInput, useDialog } from 'naive-ui'
+import { NButton, NInput, useDialog, useMessage } from 'naive-ui'
+import html2canvas from 'html2canvas'
 import { Message } from './components'
 import { useScroll } from './hooks/useScroll'
 import { useChat } from './hooks/useChat'
@@ -16,6 +17,7 @@ let controller = new AbortController()
 
 const route = useRoute()
 const dialog = useDialog()
+const ms = useMessage()
 
 const chatStore = useChatStore()
 
@@ -268,6 +270,46 @@ async function onRegenerate(index: number) {
   }
 }
 
+function handleExport() {
+  if (loading.value)
+    return
+
+  const d = dialog.warning({
+    title: t('chat.exportImage'),
+    content: t('chat.exportImageConfirm'),
+    positiveText: t('common.yes'),
+    negativeText: t('common.no'),
+    onPositiveClick: async () => {
+      try {
+        d.loading = true
+        const ele = document.getElementById('image-wrapper')
+        const canvas = await html2canvas(ele as HTMLDivElement)
+        const imgUrl = canvas.toDataURL('image/png')
+        const tempLink = document.createElement('a')
+        tempLink.style.display = 'none'
+        tempLink.href = imgUrl
+        tempLink.setAttribute('download', 'chat-shot.png')
+        if (typeof tempLink.download === 'undefined')
+          tempLink.setAttribute('target', '_blank')
+
+        document.body.appendChild(tempLink)
+        tempLink.click()
+        document.body.removeChild(tempLink)
+        window.URL.revokeObjectURL(imgUrl)
+        d.loading = false
+        ms.success(t('chat.exportSuccess'))
+        Promise.resolve()
+      }
+      catch (error: any) {
+        ms.error(t('chat.exportFailed'))
+      }
+      finally {
+        d.loading = false
+      }
+    },
+  })
+}
+
 function handleDelete(index: number) {
   if (loading.value)
     return
@@ -360,9 +402,8 @@ onUnmounted(() => {
         id="scrollRef"
         ref="scrollRef"
         class="h-full overflow-hidden overflow-y-auto"
-        :class="[isMobile ? 'p-2' : 'p-4']"
       >
-        <div class="w-full max-w-screen-xl m-auto">
+        <div id="image-wrapper" class="w-full max-w-screen-xl m-auto" :class="[isMobile ? 'p-2' : 'p-4']">
           <template v-if="!dataSources.length">
             <div class="flex items-center justify-center mt-4 text-center text-neutral-300">
               <SvgIcon icon="ri:bubble-chart-fill" class="mr-2 text-3xl" />
@@ -403,6 +444,11 @@ onUnmounted(() => {
               <SvgIcon icon="ri:delete-bin-line" />
             </span>
           </HoverButton>
+          <HoverButton @click="handleExport">
+            <span class="text-xl text-[#4f555e] dark:text-white">
+              <SvgIcon icon="ri:download-2-line" />
+            </span>
+          </HoverButton>
           <NInput
             v-model:value="prompt"
             type="textarea"