Convert to Cocoa for event handling on the Test GUI on Mac

Carbon is no good on 10.5 and later on 64-bit. Github user
dportabella found a workaround in Cocoa[1], and I added code
to make it handle the events from the dock, like the carbon
version did.

[1] https://github.com/signal11/hidapi/issues/14

testgui/Makefile.mac

@@ -11,10 +11,11 @@ all: testgui
 CC=gcc
 CXX=g++
 COBJS=../mac/hid.o
-CPPOBJS=test.o mac_support.o
-OBJS=$(COBJS) $(CPPOBJS)
+CPPOBJS=test.o
+OBJCOBJS=mac_support_cocoa.o
+OBJS=$(COBJS) $(CPPOBJS) $(OBJCOBJS)
 CFLAGS=-I../hidapi -Wall -g -c `fox-config --cflags`
-LIBS=`fox-config --libs` -framework IOKit -framework CoreFoundation -framework Carbon
+LIBS=`fox-config --libs` -framework IOKit -framework CoreFoundation -framework Cocoa
 
 
 testgui: $(OBJS)
@@ -29,7 +30,11 @@ $(COBJS): %.o: %.c
 $(CPPOBJS): %.o: %.cpp
 	$(CXX) $(CFLAGS) $< -o $@
 
+$(OBJCOBJS): %.o: %.m
+	$(CXX) $(CFLAGS) -x objective-c++ $< -o $@
+
+
 clean:
-	rm *.o testgui
+	rm $(OBJS) testgui
 
 .PHONY: clean

testgui/mac_support.h

@@ -9,7 +9,9 @@
 #ifndef MAC_SUPPORT_H__
 #define MAC_SUPPORT_H__
 
-void init_apple_message_system();
-void check_apple_events();
+extern "C" {
+	void init_apple_message_system();
+	void check_apple_events();
+}
 
 #endif

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" */