Adding codebase for the Objective-C++ part of the Mac OS X launcher/wrapper.

launchers/macosx/obj-cpp/StatusItemButton.mm

@@ -0,0 +1,39 @@
+#import <AppKit/AppKit.h>
+
+#import "StatusItemButton.h"
+
+@implementation StatusItemButton
+
+- (instancetype) initWithImage: (NSImage *) image {
+    self = [super initWithFrame:NSMakeRect(0, 0, image.size.width, image.size.height)];
+    if (self) {
+        self.image = image;
+    }
+    return self;
+}
+
+- (void) setImage:(NSImage *)image {
+    _image = image;
+    [self setNeedsDisplay:YES];
+}
+
+- (void) drawRect: (NSRect) dirtyRect {
+    NSSize imageSize = self.image.size;
+    CGFloat x = (self.bounds.size.width - imageSize.width)/2;
+    CGFloat y = (self.bounds.size.height - imageSize.height) /2;
+    NSRect drawnRect = NSMakeRect(x, y, imageSize.width, imageSize.height);
+    
+    [self.image drawInRect:drawnRect fromRect:NSZeroRect operation:NSCompositeSourceOver fraction:1.0];
+}
+
+- (void) mouseDown:(NSEvent *)theEvent {
+    [self.delegate statusItemButtonLeftClick:self];
+}
+
+- (void) rightMouseDown:(NSEvent *)theEvent {
+    [self.delegate statusItemButtonRightClick:self];
+}
+
+
+
+@end