From f654806e919b383f1a25b0421dbc63e39340ac55 Mon Sep 17 00:00:00 2001
From: Boris Klimenko <2@borisklimenko.ru>
Date: Mon, 15 Jun 2026 21:27:20 +0200
Subject: [PATCH 1/2] Add haptic feedback between media messages

---
 .../GalleryUI/Sources/GalleryController.swift | 24 ++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)

diff --git a/submodules/GalleryUI/Sources/GalleryController.swift b/submodules/GalleryUI/Sources/GalleryController.swift
index 018b5fc9f8..2a42d05a4a 100644
--- a/submodules/GalleryUI/Sources/GalleryController.swift
+++ b/submodules/GalleryUI/Sources/GalleryController.swift
@@ -654,6 +654,19 @@ public struct GalleryEntry {
     }
 }
 
+private enum GalleryEntryBoundaryId: Equatable {
+    case message(UInt32)
+    case group(UInt32)
+}
+
+private func galleryEntryBoundaryId(_ entry: GalleryEntry) -> GalleryEntryBoundaryId {
+    if let groupId = entry.entry.message.groupInfo?.stableId {
+        return .group(groupId)
+    } else {
+        return .message(entry.entry.message.stableId)
+    }
+}
+
 private func galleryEntriesForMessageHistoryEntries(_ entries: [MessageHistoryEntry], mediaSubject: GalleryMediaSubject?) -> [GalleryEntry] {
     var results: [GalleryEntry] = []
     for entry in entries {
@@ -749,6 +762,8 @@ public class GalleryController: ViewController, StandalonePresentableController,
     private let baseNavigationController: NavigationController?
     
     private var hiddenMediaManagerIndex: Int?
+    private let boundaryHaptic = HapticFeedback()
+    private var currentBoundaryId: GalleryEntryBoundaryId?
     
     private let actionInteraction: GalleryControllerActionInteraction?
     private var performAction: (GalleryControllerInteractionTapAction) -> Void
@@ -816,6 +831,7 @@ public class GalleryController: ViewController, StandalonePresentableController,
         }
         
         self.titleView = GalleryTitleView(context: context, presentationData: self.presentationData)
+        self.boundaryHaptic.prepareTap()
         
         super.init(navigationBarPresentationData: NavigationBarPresentationData(theme: GalleryController.darkNavigationTheme, strings: NavigationBarStrings(presentationStrings: self.presentationData.strings)))
         
@@ -1697,7 +1713,13 @@ public class GalleryController: ViewController, StandalonePresentableController,
                 if let index = index {
                     let entry = strongSelf.entries[index]
                     let message = strongSelf.entries[index].entry.message
-                                        
+                    let boundaryId = galleryEntryBoundaryId(entry)
+                    if let currentBoundaryId = strongSelf.currentBoundaryId, currentBoundaryId != boundaryId {
+                        strongSelf.boundaryHaptic.tap()
+                    }
+                    strongSelf.currentBoundaryId = boundaryId
+                    strongSelf.boundaryHaptic.prepareTap()
+                                         
                     strongSelf.centralEntryStableId = entry.stableId
                     if let selectedMedia = selectedMediaForMessage(message: message, mediaSubject: entry.mediaSubject) {
                         hiddenItem = (message.id, selectedMedia)

From a8f6975a97abcd66620d1ac055df4e10b25fceea Mon Sep 17 00:00:00 2001
From: Boris Klimenko <2@borisklimenko.ru>
Date: Mon, 15 Jun 2026 22:40:37 +0200
Subject: [PATCH 2/2] Initialize gallery boundary haptic state

---
 submodules/GalleryUI/Sources/GalleryController.swift | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/submodules/GalleryUI/Sources/GalleryController.swift b/submodules/GalleryUI/Sources/GalleryController.swift
index 2a42d05a4a..5937f057fc 100644
--- a/submodules/GalleryUI/Sources/GalleryController.swift
+++ b/submodules/GalleryUI/Sources/GalleryController.swift
@@ -1706,6 +1706,9 @@ public class GalleryController: ViewController, StandalonePresentableController,
         }
         
         self.galleryNode.pager.replaceItems(items, centralItemIndex: centralItemIndex)
+        if let centralItemIndex = centralItemIndex, centralItemIndex < self.entries.count {
+            self.currentBoundaryId = galleryEntryBoundaryId(self.entries[centralItemIndex])
+        }
         
         self.galleryNode.pager.centralItemIndexUpdated = { [weak self] index in
             if let strongSelf = self {