feat: add svg preview

src/renderer/src/assets/styles/markdown.scss

@@ -94,14 +94,8 @@
     background-color: var(--color-border);
   }
 
-  .katex-display {
-    span {
-      white-space: pre;
-    }
-  }
-
   span {
-    white-space: pre-wrap;
+    white-space: pre;
   }
 
   p code,

src/renderer/src/pages/home/Markdown/CodeBlock.tsx

@@ -8,6 +8,7 @@ import styled from 'styled-components'
 
 import Artifacts from './Artifacts'
 import Mermaid from './Mermaid'
+import SvgPreview from './SvgPreview'
 
 interface CodeBlockProps {
   children: string
@@ -79,8 +80,20 @@ const CodeBlock: React.FC<CodeBlockProps> = ({ children, className }) => {
     return <Mermaid chart={children} />
   }
 
+  if (language === 'svg') {
+    return (
+      <CodeBlockWrapper className="code-block">
+        <CodeHeader>
+          <CodeLanguage>{'<SVG>'}</CodeLanguage>
+          <CopyButton text={children} />
+        </CodeHeader>
+        <SvgPreview>{children}</SvgPreview>
+      </CodeBlockWrapper>
+    )
+  }
+
   return match ? (
-    <div className="code-block">
+    <CodeBlockWrapper className="code-block">
       <CodeHeader>
         <div style={{ display: 'flex', alignItems: 'center', gap: '8px' }}>
           {codeCollapsible && shouldShowExpandButton && (
@@ -118,7 +131,7 @@ const CodeBlock: React.FC<CodeBlockProps> = ({ children, className }) => {
         </CodeFooter>
       )}
       {language === 'html' && children?.includes('</html>') && <Artifacts html={children} />}
-    </div>
+    </CodeBlockWrapper>
   ) : (
     <code className={className}>{children}</code>
   )
@@ -142,6 +155,8 @@ const CopyButton: React.FC<{ text: string; style?: React.CSSProperties }> = ({ t
   )
 }
 
+const CodeBlockWrapper = styled.div``
+
 const CodeContent = styled.div<{ isShowLineNumbers: boolean }>`
   .shiki {
     padding: 1em;

src/renderer/src/pages/home/Markdown/Markdown.tsx

@@ -2,7 +2,7 @@ import 'katex/dist/katex.min.css'
 
 import { useSettings } from '@renderer/hooks/useSettings'
 import { Message } from '@renderer/types'
-import { escapeBrackets } from '@renderer/utils/formula'
+import { escapeBrackets, removeSvgEmptyLines } from '@renderer/utils/formula'
 import { isEmpty } from 'lodash'
 import { FC, useMemo } from 'react'
 import { useTranslation } from 'react-i18next'
@@ -19,7 +19,7 @@ import ImagePreview from './ImagePreview'
 import Link from './Link'
 
 const ALLOWED_ELEMENTS =
-  /<(style|p|div|span|b|i|strong|em|ul|ol|li|table|tr|td|th|thead|tbody|h[1-6]|blockquote|pre|code|br|hr)/i
+  /<(style|p|div|span|b|i|strong|em|ul|ol|li|table|tr|td|th|thead|tbody|h[1-6]|blockquote|pre|code|br|hr|svg|path|circle|rect|line|polyline|polygon|text|g|defs|title|desc|tspan)/i
 
 interface Props {
   message: Message
@@ -35,7 +35,7 @@ const Markdown: FC<Props> = ({ message }) => {
     const empty = isEmpty(message.content)
     const paused = message.status === 'paused'
     const content = empty && paused ? t('message.chat.completion.paused') : message.content
-    return escapeBrackets(content)
+    return removeSvgEmptyLines(escapeBrackets(content))
   }, [message.content, message.status, t])
 
   const rehypePlugins = useMemo(() => {
@@ -52,7 +52,6 @@ const Markdown: FC<Props> = ({ message }) => {
       className="markdown"
       rehypePlugins={rehypePlugins}
       remarkPlugins={[remarkMath, remarkGfm]}
-      disallowedElements={mathEngine === 'KaTeX' ? ['style'] : []}
       components={
         {
           a: Link,

src/renderer/src/pages/home/Markdown/SvgPreview.tsx

@@ -0,0 +1,16 @@
+const SvgPreview = ({ children }: { children: string }) => {
+  return (
+    <div
+      dangerouslySetInnerHTML={{ __html: children }}
+      style={{
+        padding: '1em',
+        backgroundColor: 'white',
+        border: '0.5px solid var(--color-code-background)',
+        borderTopLeftRadius: 0,
+        borderTopRightRadius: 0
+      }}
+    />
+  )
+}
+
+export default SvgPreview

src/renderer/src/utils/formula.ts

@@ -43,3 +43,16 @@ export function extractTitle(html: string): string | null {
 
   return null
 }
+
+export function removeSvgEmptyLines(text: string): string {
+  // 用正则表达式匹配 <svg> 标签内的内容
+  const svgPattern = /(<svg[\s\S]*?<\/svg>)/g
+
+  return text.replace(svgPattern, (svgMatch) => {
+    // 将 SVG 内容按行分割,过滤掉空行,然后重新组合
+    return svgMatch
+      .split('\n')
+      .filter((line) => line.trim() !== '')
+      .join('\n')
+  })
+}