Fix KeyRelease event with CMD key pressed (close #381)

Solution based on pull request #401

src/SFML/Window/OSX/SFApplication.h

@@ -27,12 +27,13 @@
 // Headers
 ////////////////////////////////////////////////////////////
 #import <Foundation/Foundation.h>
+#import <AppKit/AppKit.h>
 
 ////////////////////////////////////////////////////////////
 /// \brief Event processing
 ///
 ////////////////////////////////////////////////////////////
-@interface SFApplication : NSObject
+@interface SFApplication : NSApplication
 
 
 ////////////////////////////////////////////////////////////
@@ -42,4 +43,13 @@
 +(void)processEvent;
 
 
+////////////////////////////////////////////////////////////
+/// \brief Dispatch events
+///
+/// This overload of -[NSApplication sendEvent:] is used to
+/// fix KeyRelease events when the command key is down.
+////////////////////////////////////////////////////////////
+-(void)sendEvent:(NSEvent *)anEvent;
+
+
 @end

src/SFML/Window/OSX/SFApplication.m

@@ -27,7 +27,6 @@
 // Headers
 ////////////////////////////////////////////////////////////
 #import <SFML/Window/OSX/SFApplication.h>
-#import <AppKit/AppKit.h>
 
 
 ////////////////////////////////////////////////////////////
@@ -37,7 +36,7 @@
 ////////////////////////////////////////////////////////////
 +(void)processEvent
 {
-    [NSApplication sharedApplication]; // Make sure NSApp exists
+    [SFApplication sharedApplication]; // Make sure NSApp exists
     NSEvent* event = nil;
     
     while ((event = [NSApp nextEventMatchingMask:NSAnyEventMask
@@ -49,6 +48,16 @@
     }
 }
 
+- (void)sendEvent:(NSEvent *)anEvent
+{
+    if ([anEvent type] == NSKeyUp) {
+        [[[self mainWindow] firstResponder] tryToPerform:@selector(keyUp:)
+                                                    with:anEvent];
+    } else {
+        [super sendEvent:anEvent];
+    }
+}
+
 
 @end
 

src/SFML/Window/OSX/SFWindowController.mm

@@ -432,7 +432,7 @@
     [icon addRepresentation:bitmap];
     
     // Set app icon.
-    [[NSApplication sharedApplication] setApplicationIconImage:icon];
+    [[SFApplication sharedApplication] setApplicationIconImage:icon];
     
     // Free up.
     [icon release];

src/SFML/Window/OSX/WindowImplCocoa.mm

@@ -34,6 +34,7 @@
 #import <SFML/Window/OSX/SFViewController.h>
 #import <SFML/Window/OSX/cpp_objc_conversion.h>
 #import <SFML/Window/OSX/AutoreleasePoolWrapper.h>
+#import <SFML/Window/OSX/SFApplication.h>
 
 namespace sf
 {
@@ -136,7 +137,7 @@ void WindowImplCocoa::setUpProcess(void)
         }
         
         // Tell the application to stop bouncing in the Dock.
-        [[NSApplication sharedApplication] finishLaunching];
+        [[SFApplication sharedApplication] finishLaunching];
         // NOTE : This last call won't harm anything even if SFML window was
         // created with an external handle.
     }