3 files changed, 38 insertions, 2 deletions
diff --git a/indra/llwindow/llwindowmacosx-objc.h b/indra/llwindow/llwindowmacosx-objc.h
index 66851300d4..ed8c874dcb 100644
--- a/indra/llwindow/llwindowmacosx-objc.h
+++ b/indra/llwindow/llwindowmacosx-objc.h
@@ -41,4 +41,4 @@ CursorRef createImageCursor(const char *fullpath, int hotspotX, int hotspotY);
 OSErr releaseImageCursor(CursorRef ref);
 OSErr setImageCursor(CursorRef ref);
 void getScreenSize(int* width, int* height);
-
+void getVisibleScreen(int *x, int *y, int* width, int* height);
diff --git a/indra/llwindow/llwindowmacosx-objc.mm b/indra/llwindow/llwindowmacosx-objc.mm
index 6eca24ec1d..5cab2619fd 100644
--- a/indra/llwindow/llwindowmacosx-objc.mm
+++ b/indra/llwindow/llwindowmacosx-objc.mm
@@ -125,3 +125,13 @@ void getScreenSize(int* width, int* height)
 	[pool release];
 }
 
+void getVisibleScreen(int *x, int *y, int* width, int* height)
+{
+	NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
+	NSRect visible_rect = [[NSScreen mainScreen] visibleFrame];
+	if (width)  *width = (int)(visible_rect.size.width);
+	if (height) *height = (int)(visible_rect.size.height);
+	if (x) *x = (int)(visible_rect.origin.x);
+	if (y) *y = (int)(visible_rect.origin.y);
+	[pool release];
+}
diff --git a/indra/llwindow/llwindowmacosx.cpp b/indra/llwindow/llwindowmacosx.cpp
index 5b21e06fe2..924acaf148 100644
--- a/indra/llwindow/llwindowmacosx.cpp
+++ b/indra/llwindow/llwindowmacosx.cpp
@@ -1122,7 +1122,33 @@ BOOL LLWindowMacOSX::getMaximized()
 
 BOOL LLWindowMacOSX::maximize()
 {
-	// TODO
+	if (mWindow)
+	{
+		// *HACK: Because Mac OSX doesn't have a concept of a "maximized" window, we just
+		// stretch it out to the visible screen size.
+		Rect win_rect;
+
+		int visible_x;
+		int visible_y;
+		int visible_width;
+		int visible_height;
+		int screen_width;
+		int screen_height;
+
+		getScreenSize(&screen_width, &screen_height);
+		getVisibleScreen(&visible_x, &visible_y, &visible_width, &visible_height);
+
+		int mac_os_menu_bar_height = screen_height - (visible_height + visible_y);
+		::SetRect(&win_rect,
+				  visible_x,
+				  mac_os_menu_bar_height,
+				  visible_width + visible_x,
+				  visible_height + mac_os_menu_bar_height);
+
+		::SetWindowBounds(mWindow, kWindowStructureRgn, &win_rect);
+
+		return TRUE;
+	}
 	return FALSE;
 }