Add API to get top bar height on macOS

atom/browser/api/atom_api_screen.cc

@@ -120,6 +120,9 @@ void Screen::BuildPrototype(
       .SetMethod("getPrimaryDisplay", &Screen::GetPrimaryDisplay)
       .SetMethod("getAllDisplays", &Screen::GetAllDisplays)
       .SetMethod("getDisplayNearestPoint", &Screen::GetDisplayNearestPoint)
+      #if defined(OS_MACOSX)
+      .SetMethod("getMenuBarHeight", &Screen::getMenuBarHeight)
+      #endif
       .SetMethod("getDisplayMatching", &Screen::GetDisplayMatching);
 }
 

atom/browser/api/atom_api_screen.h

@@ -39,7 +39,9 @@ class Screen : public mate::EventEmitter<Screen>,
   std::vector<display::Display> GetAllDisplays();
   display::Display GetDisplayNearestPoint(const gfx::Point& point);
   display::Display GetDisplayMatching(const gfx::Rect& match_rect);
-
+#if defined(OS_MACOSX)
+  int getMenuBarHeight();
+#endif
   // display::DisplayObserver:
   void OnDisplayAdded(const display::Display& new_display) override;
   void OnDisplayRemoved(const display::Display& old_display) override;

atom/browser/api/atom_api_screen_mac.mm

@@ -0,0 +1,15 @@
+#import "atom/browser/api/atom_api_screen.h"
+
+#import <Cocoa/Cocoa.h>
+
+namespace atom {
+
+namespace api {
+#if defined(OS_MACOSX)
+int Screen::getMenuBarHeight(){
+  return [[NSApp mainMenu] menuBarHeight];
+}
+#endif
+}// namespace api
+
+}// namespace atom

docs/api/screen.md

@@ -95,6 +95,12 @@ Returns [`Point`](structures/point.md)
 
 The current absolute position of the mouse pointer.
 
+### `screen.getMenuBarHeight()`
+
+Returns [`Integer`] - Height
+
+The height of toolbar in pixels.
+
 ### `screen.getPrimaryDisplay()`
 
 Returns [`Display`](structures/display.md) - The primary display.

filenames.gypi

@@ -135,6 +135,7 @@
       'atom/browser/api/atom_api_protocol.h',
       'atom/browser/api/atom_api_render_process_preferences.cc',
       'atom/browser/api/atom_api_render_process_preferences.h',
+      'atom/browser/api/atom_api_screen_mac.mm',
       'atom/browser/api/atom_api_screen.cc',
       'atom/browser/api/atom_api_screen.h',
       'atom/browser/api/atom_api_session.cc',