From b37d0eba042f4033a21cc4b0711a65c06576da47 Mon Sep 17 00:00:00 2001
From: "SPRINX0\\prochazka" <jan.prochazka@sprinx.com>
Date: Tue, 1 Apr 2025 12:16:27 +0200
Subject: [PATCH] diagram export scirpt

---
 packages/api/src/utility/getDiagramExport.js | 40 ++++++++++++++++++++
 1 file changed, 40 insertions(+)
diff --git a/packages/api/src/utility/getDiagramExport.js b/packages/api/src/utility/getDiagramExport.js
index f73b8bc0a..1538c84d8 100644
--- a/packages/api/src/utility/getDiagramExport.js
+++ b/packages/api/src/utility/getDiagramExport.js
@@ -20,6 +20,46 @@ const getDiagramExport = (html, css, themeType, themeClassName, watermark) => {
       </style>
 
       <link rel="stylesheet" href='https://cdn.jsdelivr.net/npm/@mdi/font@6.5.95/css/materialdesignicons.css' />
+
+      <script>
+      function dragScroll(node, onScroll) {
+  if (!onScroll) return;
+
+  let lastX = null;
+  let lastY = null;
+
+  let sumMoved = 0;
+
+  const handleMoveDown = e => {
+    if (e.button != 2) return;
+
+    lastX = e.clientX;
+    lastY = e.clientY;
+    document.addEventListener('mousemove', handleMoveMove, true);
+    document.addEventListener('mouseup', handleMoveEnd, true);
+  };
+
+  const handleMoveMove = e => {
+    e.preventDefault();
+
+    document.scrollLeft -= e.clientX - lastX;
+    document.scrollTop -= e.clientY - lastY;
+
+    lastX = e.clientX;
+    lastY = e.clientY;
+  };
+  const handleMoveEnd = e => {
+    e.preventDefault();
+    e.stopPropagation();
+
+    lastX = null;
+    lastY = null;
+    document.removeEventListener('mousemove', handleMoveMove, true);
+    document.removeEventListener('mouseup', handleMoveEnd, true);
+  };
+
+  document.addEventListener('mousedown', handleMoveDown);
+      </script>
   </head>
   
   <body class='${themeType == 'dark' ? 'theme-type-dark' : 'theme-type-light'} ${themeClassName}'>
