/* * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, * 2018, 2019, 2020 * 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(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