//
// Copyright 2009-2011 Facebook
//
// 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 <Foundation/Foundation.h>
#import <UIKit/UIKit.h>

@interface UIColor (TTCategory)

/**
 * Accepted ranges:
 *        hue: 0.0 - 360.0
 * saturation: 0.0 - 1.0
 *      value: 0.0 - 1.0
 *      alpha: 0.0 - 1.0
 */
+ (UIColor*)colorWithHue:(CGFloat)h saturation:(CGFloat)s value:(CGFloat)v alpha:(CGFloat)a;

/**
 * Accepted ranges:
 *        hue: 0.0 - 1.0
 * saturation: 0.0 - 1.0
 *      value: 0.0 - 1.0
 */
- (UIColor*)multiplyHue:(CGFloat)hd saturation:(CGFloat)sd value:(CGFloat)vd;

- (UIColor*)addHue:(CGFloat)hd saturation:(CGFloat)sd value:(CGFloat)vd;

/**
 * Returns a new UIColor with the given alpha.
 */
- (UIColor*)copyWithAlpha:(CGFloat)newAlpha;

/**
 * Uses multiplyHue:saturation:value:alpha: to create a lighter version of the color.
 */
- (UIColor*)highlight;

/**
 * Uses multiplyHue:saturation:value:alpha: to create a darker version of the color.
 */
- (UIColor*)shadow;

- (CGFloat)hue;

- (CGFloat)saturation;

- (CGFloat)value;

@end
