cocoa: Fix unresponsive menubar, add default item for application menu.

Closes #259

panda/src/cocoadisplay/cocoaGraphicsWindow.mm

@@ -30,6 +30,7 @@
 
 #import "cocoaPandaView.h"
 #import "cocoaPandaWindow.h"
+#import "cocoaPandaAppDelegate.h"
 
 #import <ApplicationServices/ApplicationServices.h>
 #import <Foundation/NSAutoreleasePool.h>
@@ -71,11 +72,31 @@ CocoaGraphicsWindow(GraphicsEngine *engine, GraphicsPipe *pipe,
   if (NSApp == nil) {
     [CocoaPandaApp sharedApplication];
 
+    CocoaPandaAppDelegate *delegate = [[CocoaPandaAppDelegate alloc] init];
+    [NSApp setDelegate:delegate];
+
 #if __MAC_OS_X_VERSION_MAX_ALLOWED >= 1060
     [NSApp setActivationPolicy:NSApplicationActivationPolicyRegular];
 #endif
+    NSMenu *mainMenu = [[NSMenu alloc] init];
+
+    NSMenuItem *applicationMenuItem = [[NSMenuItem alloc] init];
+    [mainMenu addItem:applicationMenuItem];
+
+    NSMenu *applicationMenu = [[NSMenu alloc] init];
+
+    NSMenuItem *item = [[NSMenuItem alloc] init];
+    item.action = @selector(terminate:);
+    item.keyEquivalent = @"q";
+
+    NSString *appName = [NSRunningApplication currentApplication].localizedName;
+    item.title = [NSString stringWithFormat:@"Quit %@", appName];
+
+    [applicationMenu addItem:item];
+
+    [mainMenu setSubmenu:applicationMenu forItem:applicationMenuItem];
+    [NSApp setMainMenu:mainMenu];
     [NSApp finishLaunching];
-    [NSApp activateIgnoringOtherApps:YES];
   }
 
   GraphicsWindowInputDevice device =

panda/src/cocoadisplay/cocoaPandaAppDelegate.h

@@ -0,0 +1,22 @@
+/**
+ * PANDA 3D SOFTWARE
+ * Copyright (c) Carnegie Mellon University.  All rights reserved.
+ *
+ * All use of this software is subject to the terms of the revised BSD
+ * license.  You should have received a copy of this license along
+ * with this source code in a file named "LICENSE."
+ *
+ * @file cocoaPandaAppDelegate.h
+ * @author Donny Lawrence
+ * @date 2018-02-25
+ */
+
+#import <Foundation/Foundation.h>
+#import <AppKit/AppKit.h>
+
+// Cocoa is picky about where and when certain methods are called in the initialization process.
+@interface CocoaPandaAppDelegate : NSObject<NSApplicationDelegate>
+
+- (void)applicationDidFinishLaunching:(NSNotification *)notification;
+
+@end

panda/src/cocoadisplay/cocoaPandaAppDelegate.mm

@@ -0,0 +1,23 @@
+/**
+* PANDA 3D SOFTWARE
+* Copyright (c) Carnegie Mellon University.  All rights reserved.
+*
+* All use of this software is subject to the terms of the revised BSD
+* license.  You should have received a copy of this license along
+* with this source code in a file named "LICENSE."
+*
+* @file cocoaPandaAppDelegate.mm
+* @author Donny Lawrence
+* @date 2018-02-25
+*/
+
+#import "cocoaPandaAppDelegate.h"
+
+@implementation CocoaPandaAppDelegate
+
+- (void)applicationDidFinishLaunching:(NSNotification *)notification {
+  // This only seems to work when called here.
+  [NSApp activateIgnoringOtherApps:YES];
+}
+
+@end

panda/src/cocoadisplay/p3cocoadisplay_composite1.mm

@@ -7,3 +7,4 @@
 #include "cocoaPandaView.mm"
 #include "cocoaPandaWindow.mm"
 #include "cocoaPandaWindowDelegate.mm"
+#include "cocoaPandaAppDelegate.mm"