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//
// 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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