From a8fcbc466a66b5ea39be331e79b741f2f5e6d3d4 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <slouken@libsdl.org>
Date: Mon, 2 Jun 2014 09:09:40 -0700
Subject: [PATCH] Fixed bug 2534 - Mac: black bar at top of screen in
 SDL_WINDOW_FULLSCREEN mode

Alex Szpakowski

Patch to fix the y component of the position of fullscreen windows in OS X.

In Mac OS X with the latest Mercurial code, when a window is in exclusive-fullscreen the y component of its position is offset by the same amount that is normally taken up by the menubar, resulting in a black bar at the top of the screen.

The recent changes to the internal ConvertNSRect function make it treat the bottom of the menubar as 0 for the y component of window positions, even when the window is fullscreen and 'above' the menubar.

I have attached a patch which fixes the issue by only making the window position relative to the menubar in windowed modes.
---
 src/video/cocoa/SDL_cocoawindow.m | 24 ++++++++++++++----------
 1 file changed, 14 insertions(+), 10 deletions(-)

diff --git a/src/video/cocoa/SDL_cocoawindow.m b/src/video/cocoa/SDL_cocoawindow.m
index eca68a59fb775..13bfb7bc6abb8 100644
--- a/src/video/cocoa/SDL_cocoawindow.m
+++ b/src/video/cocoa/SDL_cocoawindow.m
@@ -49,6 +49,9 @@
 #endif
 
 
+#define FULLSCREEN_MASK (SDL_WINDOW_FULLSCREEN_DESKTOP | SDL_WINDOW_FULLSCREEN)
+
+
 @interface SDLWindow : NSWindow
 /* These are needed for borderless/fullscreen windows */
 - (BOOL)canBecomeKeyWindow;
@@ -89,9 +92,9 @@ - (void)sendEvent:(NSEvent *)event
 
 static Uint32 s_moveHack;
 
-static void ConvertNSRect(NSScreen *screen, NSRect *r)
+static void ConvertNSRect(NSScreen *screen, BOOL fullscreen, NSRect *r)
 {
-    NSRect visibleScreen = [screen visibleFrame];
+    NSRect visibleScreen = fullscreen ? [screen frame] : [screen visibleFrame];
     r->origin.y = (visibleScreen.origin.y + visibleScreen.size.height) - r->origin.y - r->size.height;
 }
 
@@ -412,8 +415,9 @@ - (void)windowDidMove:(NSNotification *)aNotification
     int x, y;
     SDL_Window *window = _data->window;
     NSWindow *nswindow = _data->nswindow;
+    BOOL fullscreen = window->flags & FULLSCREEN_MASK;
     NSRect rect = [nswindow contentRectForFrameRect:[nswindow frame]];
-    ConvertNSRect([nswindow screen], &rect);
+    ConvertNSRect([nswindow screen], fullscreen, &rect);
 
     if (s_moveHack) {
         SDL_bool blockMove = ((SDL_GetTicks() - s_moveHack) < 500);
@@ -424,7 +428,7 @@ - (void)windowDidMove:(NSNotification *)aNotification
             /* Cocoa is adjusting the window in response to a mode change */
             rect.origin.x = window->x;
             rect.origin.y = window->y;
-            ConvertNSRect([nswindow screen], &rect);
+            ConvertNSRect([nswindow screen], fullscreen, &rect);
             [nswindow setFrameOrigin:rect.origin];
             return;
         }
@@ -449,7 +453,7 @@ - (void)windowDidResize:(NSNotification *)aNotification
     NSWindow *nswindow = _data->nswindow;
     int x, y, w, h;
     NSRect rect = [nswindow contentRectForFrameRect:[nswindow frame]];
-    ConvertNSRect([nswindow screen], &rect);
+    ConvertNSRect([nswindow screen], (window->flags & FULLSCREEN_MASK), &rect);
     x = (int)rect.origin.x;
     y = (int)rect.origin.y;
     w = (int)rect.size.width;
@@ -934,7 +938,7 @@ - (void)resetCursorRects
     /* Fill in the SDL window with the window data */
     {
         NSRect rect = [nswindow contentRectForFrameRect:[nswindow frame]];
-        ConvertNSRect([nswindow screen], &rect);
+        ConvertNSRect([nswindow screen], (window->flags & FULLSCREEN_MASK), &rect);
         window->x = (int)rect.origin.x;
         window->y = (int)rect.origin.y;
         window->w = (int)rect.size.width;
@@ -1010,7 +1014,7 @@ - (void)resetCursorRects
     rect.origin.y = window->y;
     rect.size.width = window->w;
     rect.size.height = window->h;
-    ConvertNSRect([[NSScreen screens] objectAtIndex:0], &rect);
+    ConvertNSRect([[NSScreen screens] objectAtIndex:0], (window->flags & FULLSCREEN_MASK), &rect);
 
     style = GetWindowStyle(window);
 
@@ -1138,7 +1142,7 @@ - (void)resetCursorRects
     rect.origin.y = window->y;
     rect.size.width = window->w;
     rect.size.height = window->h;
-    ConvertNSRect([nswindow screen], &rect);
+    ConvertNSRect([nswindow screen], (window->flags & FULLSCREEN_MASK), &rect);
 
     moveHack = s_moveHack;
     s_moveHack = 0;
@@ -1338,7 +1342,7 @@ - (void)resetCursorRects
         rect.origin.y = bounds.y;
         rect.size.width = bounds.w;
         rect.size.height = bounds.h;
-        ConvertNSRect([nswindow screen], &rect);
+        ConvertNSRect([nswindow screen], fullscreen, &rect);
 
         /* Hack to fix origin on Mac OS X 10.4 */
         NSRect screenRect = [[nswindow screen] frame];
@@ -1356,7 +1360,7 @@ - (void)resetCursorRects
         rect.origin.y = window->windowed.y;
         rect.size.width = window->windowed.w;
         rect.size.height = window->windowed.h;
-        ConvertNSRect([nswindow screen], &rect);
+        ConvertNSRect([nswindow screen], fullscreen, &rect);
 
         if ([nswindow respondsToSelector: @selector(setStyleMask:)]) {
             [nswindow performSelector: @selector(setStyleMask:) withObject: (id)(uintptr_t)GetWindowStyle(window)];