Add workaround for 10.8 API

This should cause TextMate to once again run on 10.7 (issue #643).

Frameworks/OakAppKit/src/NSColor Additions.h

@@ -1,8 +1,6 @@
-@interface NSColor (Creation)
+@interface NSColor (TMColorAdditions)
 + (NSColor*)colorWithString:(NSString*)aString;
 + (NSColor*)tmColorWithCGColor:(CGColorRef)aColor;
-@end
-
-@interface NSColor (OakColor)
+- (CGColorRef)tmCGColor;
 - (BOOL)isDark;
 @end

Frameworks/OakAppKit/src/NSColor Additions.mm

@@ -1,7 +1,7 @@
 #import "NSColor Additions.h"
 #import <OakFoundation/OakFoundation.h>
 
-@implementation NSColor (Creation)
+@implementation NSColor (TMColorAdditions)
 + (NSColor*)colorWithString:(NSString*)aString
 {
 	if(NSIsEmptyString(aString))
@@ -23,9 +23,21 @@
 		return [self colorWithCGColor:aColor];
 	return [NSColor colorWithColorSpace:[[[NSColorSpace alloc] initWithCGColorSpace:CGColorGetColorSpace(aColor)] autorelease] components:CGColorGetComponents(aColor) count:CGColorGetNumberOfComponents(aColor)];
 }
-@end
 
-@implementation NSColor (OakColor)
+- (CGColorRef)tmCGColor
+{
+	if([self respondsToSelector:@selector(CGColor)])
+		return [self CGColor];
+
+	NSColor* rgbColor = [self colorUsingColorSpaceName:NSCalibratedRGBColorSpace];
+	CGFloat rgba[4];
+	[rgbColor getRed:&rgba[0] green:&rgba[1] blue:&rgba[2] alpha:&rgba[3]];
+	CGColorSpaceRef colorSpace = CGColorSpaceCreateWithName(kCGColorSpaceGenericRGB);
+	CGColorRef res = CGColorCreate(colorSpace, rgba);
+	CGColorSpaceRelease(colorSpace);
+	return (CGColorRef)[(id)res autorelease];
+}
+
 - (BOOL)isDark
 {
 	uint32_t r(lroundf(255 * [self redComponent]));

Frameworks/OakTextView/src/GutterView.mm

@@ -1,6 +1,7 @@
 #import "GutterView.h"
 #import <OakAppKit/OakAppKit.h>
 #import <OakAppKit/NSImage Additions.h>
+#import <OakAppKit/NSColor Additions.h>
 #import <OakFoundation/NSString Additions.h>
 #import <text/types.h>
 #import <cf/cf.h>
@@ -276,9 +277,9 @@ static CTLineRef CTCreateLineFromText (std::string const& text, NSFont* font, NS
 	CTLineRef res = NULL;
 	if(CFMutableDictionaryRef dict = CFDictionaryCreateMutable(kCFAllocatorDefault, 2, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks))
 	{
-		if(CGColorRef cgColor = [color CGColor])
+		if(CGColorRef cgColor = [color tmCGColor])
 			CFDictionaryAddValue(dict, kCTForegroundColorAttributeName, cgColor);
-			
+
 		if(CTFontRef ctFont = CTFontCreateWithName((CFStringRef)[font fontName], [font pointSize], NULL))
 		{
 			CFDictionaryAddValue(dict, kCTFontAttributeName, ctFont);