From e1bcf5d6a4b813a63d42e6ccb37ca8054775d65b Mon Sep 17 00:00:00 2001
From: "thomasvl@gmail.com"
 <thomasvl@gmail.com@7dc7ac4e-7543-0410-b95c-c1676fc8e2a3>
Date: Thu, 5 Mar 2009 22:03:40 +0000
Subject: - Added GTMLuminance for working with colors in HSL space easily. -
 Added GTMTheme for doing product wide theme modifications.

---
 AppKit/GTMNSColor+Luminance.h | 65 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 AppKit/GTMNSColor+Luminance.h

(limited to 'AppKit/GTMNSColor+Luminance.h')

diff --git a/AppKit/GTMNSColor+Luminance.h b/AppKit/GTMNSColor+Luminance.h
new file mode 100644
index 0000000..c1501cd
--- /dev/null
+++ b/AppKit/GTMNSColor+Luminance.h
@@ -0,0 +1,65 @@
+//
+//  GTMNSColor+Luminance.h
+//
+//  Copyright 2009 Google Inc.
+//
+//  Licensed under the Apache License, Version 2.0 (the "License"); you may not
+//  use this file except in compliance with the License.  You may obtain a copy
+//  of the License at
+// 
+//  http://www.apache.org/licenses/LICENSE-2.0
+// 
+//  Unless required by applicable law or agreed to in writing, software
+//  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+//  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+//  License for the specific language governing permissions and limitations under
+//  the License.
+//
+
+#import "GTMDefines.h"
+#import <Cocoa/Cocoa.h>
+
+#if MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_5
+
+enum {
+  GTMColorationBaseHighlight,
+  GTMColorationBaseMidtone,
+  GTMColorationBaseShadow,
+  GTMColorationBasePenumbra,
+  GTMColorationLightHighlight,
+  GTMColorationLightMidtone,
+  GTMColorationLightShadow,
+  GTMColorationLightPenumbra,
+  GTMColorationDarkHighlight,
+  GTMColorationDarkMidtone,
+  GTMColorationDarkShadow,
+  GTMColorationDarkPenumbra
+};
+typedef NSUInteger GTMColorationUse;
+
+@interface NSColorSpace (GTMNSColorSpaceLuminanceHelpers)
++ (NSColorSpace *)gtm_labColorSpace;
+@end
+
+@interface NSColor (GTMLuminanceAdditions)
+- (CGFloat)gtm_luminance;
+
+// Create a color modified by lightening or darkening it (-1.0 to 1.0)
+- (NSColor *)gtm_colorByAdjustingLuminance:(CGFloat)luminance;
+
+// Create a color modified by lightening or darkening it (-1.0 to 1.0)
+- (NSColor *)gtm_colorByAdjustingLuminance:(CGFloat)luminance
+                                saturation:(CGFloat)saturation;
+
+// Returns a color adjusted for a specific usage
+- (NSColor *)gtm_colorAdjustedFor:(GTMColorationUse)use;
+- (NSColor *)gtm_colorAdjustedFor:(GTMColorationUse)use faded:(BOOL)fade;
+
+// Returns whether the color is in the dark half of the spectrum
+- (BOOL)gtm_isDarkColor;
+
+// Returns a color that is legible on this color. (Nothing to do with textColor)
+- (NSColor *)gtm_legibleTextColor;
+@end
+
+#endif
-- 
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