#793 workaround for broken Apple code

CHANGELOG.md

@@ -6,6 +6,7 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 
 ## [Unreleased]
 ### Changed
+- Work around broken Apple code for retrieving menubar dimensions on Apple Silicon M1 [#793](https://github.com/koekeishiya/yabai/issues/793)
 - Rework query attributes and define dataformat as part of the API [#775](https://github.com/koekeishiya/yabai/issues/775)
 - Properly clear space.last-window and space.first-window query attributes when the last window is made floating [#786](https://github.com/koekeishiya/yabai/issues/786)
 - Reworked signal system; events are no longer coupled 1-1 with observed system events.

src/display_manager.c

@@ -208,6 +208,24 @@ CGRect display_manager_menu_bar_rect(uint32_t did)
 {
     CGRect bounds = {};
     SLSGetRevealedMenuBarBounds(&bounds, g_connection, display_space_id(did));
+
+#ifdef __arm64__
+
+    //
+    //NOTE(koekeishiya): The above function is broken on Apple Silicon and always returns an empty rectangle,
+    // as of macOS 11.0.1, 11.1, 11.2 and 11.2.1.. The menubar height seems to be a constant of 24em always,
+    // regardless of the display being a 13" or 16", so we patch it here. The width of the menubar should be
+    // equal to the width of the display.
+    //
+
+    if (bounds.size.width == 0 && bounds.size.height == 0) {
+        CGRect frame  = display_bounds(did);
+        bounds.size.height = 24;
+        bounds.size.width = frame.size.width;
+    }
+
+#endif
+
     return bounds;
 }