ObjFW  Artifact [442896ccaa]

Artifact 442896ccaabad261f9c78052ed41f361cd41e9f3cade15bb0f29fec8484269d8:

• File src/OFColor.m — part of check-in [aeb403a1ed] at 2020-10-10 14:27:37 on branch trunk — OFObject: Change type of -[hash] to unsigned long

  The internal hash is still 32 bit in most places, but this way, it is at
  least not baked into the API and ABI and can be upgraded later, should
  that ever be necessary. (user: js, size: 3899) [annotate] [blame] [check-ins using] [more...]

/*
 * 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.
 */

#include "config.h"

#import "OFColor.h"

#import "once.h"

#import "OFInvalidArgumentException.h"

@implementation OFColor
#define PREDEFINED_COLOR(name, r, g, b)					\
	static OFColor *name##Color = nil;				\
									\
	static void							\
	initPredefinedColor_##name(void)				\
	{								\
		name##Color = [[OFColor alloc] initWithRed: r		\
						     green: g		\
						      blue: b		\
						     alpha: 1];		\
	}								\
									\
	+ (OFColor *)name						\
	{								\
		static of_once_t onceControl = OF_ONCE_INIT;		\
		of_once(&onceControl, initPredefinedColor_##name);	\
									\
		return name##Color;					\
	}

PREDEFINED_COLOR(black,   0.00f, 0.00f, 0.00f)
PREDEFINED_COLOR(silver,  0.75f, 0.75f, 0.75f)
PREDEFINED_COLOR(grey,    0.50f, 0.50f, 0.50f)
PREDEFINED_COLOR(white,   1.00f, 1.00f, 1.00f)
PREDEFINED_COLOR(maroon,  0.50f, 0.00f, 0.00f)
PREDEFINED_COLOR(red,     1.00f, 0.00f, 0.00f)
PREDEFINED_COLOR(purple,  0.50f, 0.00f, 0.50f)
PREDEFINED_COLOR(fuchsia, 1.00f, 0.00f, 1.00f)
PREDEFINED_COLOR(green,   0.00f, 0.50f, 0.00f)
PREDEFINED_COLOR(lime,    0.00f, 1.00f, 0.00f)
PREDEFINED_COLOR(olive,   0.50f, 0.50f, 0.00f)
PREDEFINED_COLOR(yellow,  1.00f, 1.00f, 0.00f)
PREDEFINED_COLOR(navy,    0.00f, 0.00f, 0.50f)
PREDEFINED_COLOR(blue,    0.00f, 0.00f, 1.00f)
PREDEFINED_COLOR(teal,    0.00f, 0.50f, 0.50f)
PREDEFINED_COLOR(aqua,    0.00f, 1.00f, 1.00f)

+ (instancetype)colorWithRed: (float)red
		       green: (float)green
			blue: (float)blue
		       alpha: (float)alpha
{
	return [[[self alloc] initWithRed: red
				    green: green
				     blue: blue
				    alpha: alpha] autorelease];
}

- (instancetype)initWithRed: (float)red
		      green: (float)green
		       blue: (float)blue
		      alpha: (float)alpha
{
	self = [super init];

	@try {
		if (red < 0.0 || red > 1.0 ||
		    green < 0.0 || green > 1.0 ||
		    blue < 0.0 || blue > 1.0 ||
		    alpha < 0.0 || alpha > 1.0)
			@throw [OFInvalidArgumentException exception];

		_red = red;
		_green = green;
		_blue = blue;
		_alpha = alpha;
	} @catch (id e) {
		[self release];
		@throw e;
	}

	return self;
}

- (bool)isEqual: (id)object
{
	OFColor *other;

	if (object == self)
		return true;

	if (![object isKindOfClass: [OFColor class]])
		return false;

	other = object;

	if (other->_red != _red)
		return false;
	if (other->_green != _green)
		return false;
	if (other->_blue != _blue)
		return false;
	if (other->_alpha != _alpha)
		return false;

	return true;
}

- (unsigned long)hash
{
	uint32_t hash;
	float tmp;

	OF_HASH_INIT(hash);

	tmp = OF_BSWAP_FLOAT_IF_LE(_red);
	for (uint_fast8_t i = 0; i < sizeof(float); i++)
		OF_HASH_ADD(hash, ((char *)&tmp)[i]);

	tmp = OF_BSWAP_FLOAT_IF_LE(_green);
	for (uint_fast8_t i = 0; i < sizeof(float); i++)
		OF_HASH_ADD(hash, ((char *)&tmp)[i]);

	tmp = OF_BSWAP_FLOAT_IF_LE(_blue);
	for (uint_fast8_t i = 0; i < sizeof(float); i++)
		OF_HASH_ADD(hash, ((char *)&tmp)[i]);

	tmp = OF_BSWAP_FLOAT_IF_LE(_alpha);
	for (uint_fast8_t i = 0; i < sizeof(float); i++)
		OF_HASH_ADD(hash, ((char *)&tmp)[i]);

	OF_HASH_FINALIZE(hash);

	return hash;
}

- (void)getRed: (float *)red
	 green: (float *)green
	  blue: (float *)blue
	 alpha: (float *)alpha
{
	*red = _red;
	*green = _green;
	*blue = _blue;

	if (alpha != NULL)
		*alpha = _alpha;
}
@end