/*
* Copyright (c) 2008-2021 Jonathan Schleifer <js@nil.im>
*
* All rights reserved.
*
* This file is part of ObjFW. It may be distributed under the terms of the
* Q Public License 1.0, which can be found in the file LICENSE.QPL included in
* the packaging of this file.
*
* Alternatively, it may be distributed under the terms of the GNU General
* Public License, either version 2 or 3, which can be found in the file
* LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
* file.
*/
#import "OFObject.h"
OF_ASSUME_NONNULL_BEGIN
/**
* @class OFColor OFColor.h ObjFW/OFColor.h
*
* @brief A class for storing a color.
*/
@interface OFColor: OFObject
{
float _red, _green, _blue, _alpha;
OF_RESERVE_IVARS(OFColor, 4)
}
#ifdef OF_HAVE_CLASS_PROPERTIES
@property (class, readonly, nonatomic) OFColor *black;
@property (class, readonly, nonatomic) OFColor *silver;
@property (class, readonly, nonatomic) OFColor *grey;
@property (class, readonly, nonatomic) OFColor *white;
@property (class, readonly, nonatomic) OFColor *maroon;
@property (class, readonly, nonatomic) OFColor *red;
@property (class, readonly, nonatomic) OFColor *purple;
@property (class, readonly, nonatomic) OFColor *fuchsia;
@property (class, readonly, nonatomic) OFColor *green;
@property (class, readonly, nonatomic) OFColor *lime;
@property (class, readonly, nonatomic) OFColor *olive;
@property (class, readonly, nonatomic) OFColor *yellow;
@property (class, readonly, nonatomic) OFColor *navy;
@property (class, readonly, nonatomic) OFColor *blue;
@property (class, readonly, nonatomic) OFColor *teal;
@property (class, readonly, nonatomic) OFColor *aqua;
#endif
/**
* @brief Creates a new color with the specified red, green, blue and alpha
* value.
*
* @param red The red value of the color, between 0.0 and 1.0
* @param green The green value of the color, between 0.0 and 1.0
* @param blue The blue value of the color, between 0.0 and 1.0
* @param alpha The alpha value of the color, between 0.0 and 1.0
* @return A new color with the specified red, green, blue and alpha value
*/
+ (instancetype)colorWithRed: (float)red
green: (float)green
blue: (float)blue
alpha: (float)alpha;
/**
* @brief Returns the HTML color `black`.
*
* The RGBA value is (0, 0, 0, 1).
*
* @return The HTML color `black`
*/
+ (OFColor *)black;
/**
* @brief Returns the HTML color `silver`.
*
* The RGBA value is (0.75, 0.75, 0.75, 1).
*
* @return The HTML color `silver`
*/
+ (OFColor *)silver;
/**
* @brief Returns the HTML color `grey`.
*
* The RGBA value is (0.5, 0.5, 0.5, 1).
*
* @return The HTML color `grey`
*/
+ (OFColor *)grey;
/**
* @brief Returns the HTML color `white`.
*
* The RGBA value is (1, 1, 1, 1).
*
* @return The HTML color `white`
*/
+ (OFColor *)white;
/**
* @brief Returns the HTML color `maroon`.
*
* The RGBA value is (0.5, 0, 0, 1).
*
* @return The HTML color `maroon`
*/
+ (OFColor *)maroon;
/**
* @brief Returns the HTML color `red`.
*
* The RGBA value is (1, 0, 0, 1).
*
* @return The HTML color `red`
*/
+ (OFColor *)red;
/**
* @brief Returns the HTML color `purple`.
*
* The RGBA value is (0.5, 0, 0.5, 1).
*
* @return The HTML color `purple`
*/
+ (OFColor *)purple;
/**
* @brief Returns the HTML color `fuchsia`.
*
* The RGBA value is (1, 0, 1, 1).
*
* @return The HTML color `fuchsia`
*/
+ (OFColor *)fuchsia;
/**
* @brief Returns the HTML color `green`.
*
* The RGBA value is (0, 0.5, 0, 1).
*
* @return The HTML color `green`
*/
+ (OFColor *)green;
/**
* @brief Returns the HTML color `lime`.
*
* The RGBA value is (0, 1, 0, 1).
*
* @return The HTML color `lime`
*/
+ (OFColor *)lime;
/**
* @brief Returns the HTML color `olive`.
*
* The RGBA value is (0.5, 0.5, 0, 1).
*
* @return The HTML color `olive`
*/
+ (OFColor *)olive;
/**
* @brief Returns the HTML color `yellow`.
*
* The RGBA value is (1, 1, 0, 1).
*
* @return The HTML color `yellow`
*/
+ (OFColor *)yellow;
/**
* @brief Returns the HTML color `navy`.
*
* The RGBA value is (0, 0, 0.5, 1).
*
* @return The HTML color `navy`
*/
+ (OFColor *)navy;
/**
* @brief Returns the HTML color `blue`.
*
* The RGBA value is (0, 0, 1, 1).
*
* @return The HTML color `blue`
*/
+ (OFColor *)blue;
/**
* @brief Returns the HTML color `teal`.
*
* The RGBA value is (0, 0.5, 0.5, 1).
*
* @return The HTML color `teal`
*/
+ (OFColor *)teal;
/**
* @brief Returns the HTML color `aqua`.
*
* The RGBA value is (0, 1, 1, 1).
*
* @return The HTML color `aqua`
*/
+ (OFColor *)aqua;
/**
* @brief Initializes an already allocated color with the specified red, green,
* blue and alpha value.
*
* @param red The red value of the color, between 0.0 and 1.0
* @param green The green value of the color, between 0.0 and 1.0
* @param blue The blue value of the color, between 0.0 and 1.0
* @param alpha The alpha value of the color, between 0.0 and 1.0
* @return A color initialized with the specified red, green, blue and alpha
* value
*/
- (instancetype)initWithRed: (float)red
green: (float)green
blue: (float)blue
alpha: (float)alpha;
/**
* @brief Returns the red, green, blue and alpha value of the color.
*
* @param red A pointer to store the red value of the color
* @param green A pointer to store the green value of the color
* @param blue A pointer to store the blue value of the color
* @param alpha An optional pointer to store the alpha of the color
*/
- (void)getRed: (float *)red
green: (float *)green
blue: (float *)blue
alpha: (nullable float *)alpha;
@end
OF_ASSUME_NONNULL_END