Externals: add hidapi

Current master (d17db57b9d4354752e0af42f5f33007a42ef2906) because
Android support was added after the current release (0.8.0-rc1).

Externals/hidapi/testgui/mac_support_cocoa.m

@@ -0,0 +1,94 @@
+/*******************************
+ Mac support for HID Test GUI
+ 
+ Alan Ott
+ Signal 11 Software
+*******************************/
+
+#include <fx.h>
+#import <Cocoa/Cocoa.h>
+
+extern FXMainWindow *g_main_window;
+
+
+@interface MyAppDelegate : NSObject
+{
+} 
+@end
+
+@implementation MyAppDelegate
+- (void) applicationWillBecomeActive:(NSNotification*)notif
+{
+	printf("WillBecomeActive\n");
+	g_main_window->show();
+
+}
+
+- (void) applicationWillTerminate:(NSNotification*)notif
+{
+	/* Doesn't get called. Not sure why */
+	printf("WillTerminate\n");
+	FXApp::instance()->exit();
+}
+
+- (NSApplicationTerminateReply) applicationShouldTerminate:(NSApplication*)sender
+{
+	/* Doesn't get called. Not sure why */
+	printf("ShouldTerminate\n");
+	return YES;
+}
+
+- (void) applicationWillHide:(NSNotification*)notif
+{
+	printf("WillHide\n");
+	g_main_window->hide();
+}
+
+- (void) handleQuitEvent:(NSAppleEventDescriptor*)event withReplyEvent:(NSAppleEventDescriptor*)replyEvent
+{
+	printf("QuitEvent\n");
+	FXApp::instance()->exit();
+}
+
+@end
+
+extern "C" {
+
+void
+init_apple_message_system()
+{
+	static MyAppDelegate *d = [MyAppDelegate new];
+
+	[[NSApplication sharedApplication] setDelegate:d];
+
+	/* Register for Apple Events. */
+	/* This is from
+	   http://stackoverflow.com/questions/1768497/application-exit-event */
+	NSAppleEventManager *aem = [NSAppleEventManager sharedAppleEventManager];
+	[aem setEventHandler:d
+	     andSelector:@selector(handleQuitEvent:withReplyEvent:)
+	     forEventClass:kCoreEventClass andEventID:kAEQuitApplication];
+}
+
+void
+check_apple_events()
+{
+	NSApplication *app = [NSApplication sharedApplication];
+
+	NSAutoreleasePool *pool = [NSAutoreleasePool new];
+	while (1) {
+		NSEvent* event = [NSApp nextEventMatchingMask:NSAnyEventMask
+		                        untilDate:nil
+                                        inMode:NSDefaultRunLoopMode
+                                        dequeue:YES];
+		if (event == NULL)
+			break;
+		else {
+			//printf("Event happened: Type: %d\n", event->_type);
+			[app sendEvent: event];
+		}
+	}
+	[pool release];
+}
+
+} /* extern "C" */