From dd41632017bee6ce1da701ad3566f1864306ea40 Mon Sep 17 00:00:00 2001
From: Roman Rodionov <roman_rodionov@epam.com>
Date: Wed, 4 Dec 2024 19:27:36 +0100
Subject: [PATCH] #5969 - Load from file having only micro structures on macro
 canvas causes unnecessary zoom up to 200% and shift molecule to top left
 angle (#6057)

---
 packages/ketcher-core/src/application/editor/Editor.ts |  3 ++-
 .../src/domain/entities/DrawingEntitiesManager.ts      | 10 ++++++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/packages/ketcher-core/src/application/editor/Editor.ts b/packages/ketcher-core/src/application/editor/Editor.ts
index f52af58dd2..4cb5e5c981 100644
--- a/packages/ketcher-core/src/application/editor/Editor.ts
+++ b/packages/ketcher-core/src/application/editor/Editor.ts
@@ -648,7 +648,8 @@ export class CoreEditor {
       // eslint-disable-next-line @typescript-eslint/ban-ts-comment
       // @ts-ignore
       window._ketcher_isAutozoomDisabled ||
-      !this.isCurrentModeWithAutozoom()
+      !this.isCurrentModeWithAutozoom() ||
+      !this.drawingEntitiesManager.hasMonomers
     ) {
       return;
     }
diff --git a/packages/ketcher-core/src/domain/entities/DrawingEntitiesManager.ts b/packages/ketcher-core/src/domain/entities/DrawingEntitiesManager.ts
index 83418cbaf1..533316feb0 100644
--- a/packages/ketcher-core/src/domain/entities/DrawingEntitiesManager.ts
+++ b/packages/ketcher-core/src/domain/entities/DrawingEntitiesManager.ts
@@ -166,6 +166,16 @@ export class DrawingEntitiesManager {
     return this.allEntities.length !== 0;
   }
 
+  public get hasMonomers() {
+    const monomers = [...this.monomers.values()].filter(
+      (monomer) =>
+        !monomer.monomerItem.props.isMicromoleculeFragment ||
+        isMonomerSgroupWithAttachmentPoints(monomer),
+    );
+
+    return monomers.length !== 0;
+  }
+
   public get allBondsToMonomers() {
     return [
       ...(this.polymerBonds as Map<number, PolymerBond>),