(svn r25663) -Fix [FS#4857]: [OSX] Monospace font detection.

src/os/macosx/macos.h

@@ -36,4 +36,6 @@ static inline bool MacOSVersionIsAtLeast(long major, long minor, long bugfix)
 	return true;
 }
 
+bool IsMonospaceFont(CFStringRef name);
+
 #endif /* MACOS_H */

src/os/macosx/macos.mm

@@ -193,3 +193,15 @@ uint GetCPUCoreCount()
 
 	return count;
 }
+
+/**
+ * Check if a font is a monospace font.
+ * @param name Name of the font.
+ * @return True if the font is a monospace font.
+ */
+bool IsMonospaceFont(CFStringRef name)
+{
+	NSFont *font = [ NSFont fontWithName:(NSString *)name size:0.0f ];
+
+	return font != NULL ? [ font isFixedPitch ] : false;
+}