From 3343975488e0ca28370aedd9a74be0b45d942d21 Mon Sep 17 00:00:00 2001
From: "trop[bot]" <37223003+trop[bot]@users.noreply.github.com>
Date: Thu, 3 Apr 2025 11:26:48 -0700
Subject: [PATCH] fix: ensure maximize is emitted when reduce motion is enabled
 on macOS (#46465)

Co-authored-by: trop[bot] <37223003+trop[bot]@users.noreply.github.com>
Co-authored-by: Samuel Attard <marshallofsound@electronjs.org>
---
 .../ui/cocoa/electron_ns_window_delegate.mm      | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/shell/browser/ui/cocoa/electron_ns_window_delegate.mm b/shell/browser/ui/cocoa/electron_ns_window_delegate.mm
index 3f7c689bfc8b..04fa6781dd1f 100644
--- a/shell/browser/ui/cocoa/electron_ns_window_delegate.mm
+++ b/shell/browser/ui/cocoa/electron_ns_window_delegate.mm
@@ -221,6 +221,12 @@ using FullScreenTransitionState =
   [super windowDidResize:notification];
   shell_->NotifyWindowResize();
   shell_->RedrawTrafficLights();
+  // When reduce motion is enabled windowDidResize is only called once after
+  // a resize and windowDidEndLiveResize is not called. So we need to call
+  // handleZoomEnd here as well.
+  if (NSWorkspace.sharedWorkspace.accessibilityDisplayShouldReduceMotion) {
+    [self handleZoomEnd];
+  }
 }
 
 - (void)windowWillMove:(NSNotification*)notification {
@@ -276,9 +282,7 @@ using FullScreenTransitionState =
   return YES;
 }
 
-- (void)windowDidEndLiveResize:(NSNotification*)notification {
-  resizingHorizontally_.reset();
-  shell_->NotifyWindowResized();
+- (void)handleZoomEnd {
   if (is_zooming_) {
     if (shell_->IsMaximized())
       shell_->NotifyWindowMaximize();
@@ -288,6 +292,12 @@ using FullScreenTransitionState =
   }
 }
 
+- (void)windowDidEndLiveResize:(NSNotification*)notification {
+  resizingHorizontally_.reset();
+  shell_->NotifyWindowResized();
+  [self handleZoomEnd];
+}
+
 - (void)windowWillEnterFullScreen:(NSNotification*)notification {
   // Store resizable mask so it can be restored after exiting fullscreen.
   is_resizable_ = shell_->HasStyleMask(NSWindowStyleMaskResizable);