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/*
* Copyright (c) 2008-2026 Jonathan Schleifer <js@nil.im>
*
* All rights reserved.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License version 3.0 only,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* version 3.0 for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* version 3.0 along with this program. If not, see
* <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#import "ObjFW.h"
#import "ObjFWTest.h"
@interface OFColorTests: OTTestCase
{
OFColor *_color;
}
@end
static const float allowedImprecision = 0.0000001f;
@implementation OFColorTests
- (void)setUp
{
[super setUp];
_color = [[OFColor alloc] initWithRed: 63.0f / 255.0f
green: 127.0f / 255.0f
blue: 1.0f
alpha: 1.0f];
}
- (void)dealloc
{
objc_release(_color);
[super dealloc];
}
#ifdef OF_OBJFW_RUNTIME
- (void)testReturnsTaggedPointer
{
OTAssertTrue(object_isTaggedPointer(_color));
}
#endif
- (void)testGetRedGreenBlueAlpha
{
float red, green, blue, alpha;
[_color getRed: &red green: &green blue: &blue alpha: &alpha];
OTAssertEqual(red, 63.0f / 255);
OTAssertEqual(green, 127.0f / 255);
OTAssertEqual(blue, 1.0f);
OTAssertEqual(alpha, 1.0f);
}
- (void)testColorUsingColorSpace
{
OFColor *color;
float red, green, blue, alpha;
color = [OFColor colorWithRed: 0.5f
green: 0.5f
blue: 0.5f
alpha: 1.0f];
color = [color colorUsingColorSpace:
[OFColorSpace linearSRGBColorSpace]];
[color getRed: &red green: &green blue: &blue alpha: &alpha];
OTAssertLessThan(fabsf(red - 0.21404114f), allowedImprecision);
OTAssertLessThan(fabsf(green - 0.21404114f), allowedImprecision);
OTAssertLessThan(fabsf(blue - 0.21404114f), allowedImprecision);
OTAssertLessThan(fabsf(alpha - 1.0f), allowedImprecision);
color = [OFColor colorWithRed: 0.5f
green: 0.5f
blue: 0.5f
alpha: 1.0f];
color = [color colorUsingColorSpace: [OFColorSpace BT709ColorSpace]];
[color getRed: &red green: &green blue: &blue alpha: &alpha];
OTAssertLessThan(fabsf(red - 0.4501885f), allowedImprecision);
OTAssertLessThan(fabsf(green - 0.4501885f), allowedImprecision);
OTAssertLessThan(fabsf(blue - 0.4501885f), allowedImprecision);
OTAssertLessThan(fabsf(alpha - 1.0f), allowedImprecision);
color = [OFColor colorWithRed: 0.2f
green: 0.5f
blue: 0.1f
alpha: 1.0f];
color = [color colorUsingColorSpace:
[OFColorSpace displayP3ColorSpace]];
[color getRed: &red green: &green blue: &blue alpha: &alpha];
OTAssertLessThan(fabsf(red - 0.2832721f), allowedImprecision);
OTAssertLessThan(fabsf(green - 0.4934571f), allowedImprecision);
OTAssertLessThan(fabsf(blue - 0.1725515f), allowedImprecision);
OTAssertLessThan(fabsf(alpha - 1.0f), allowedImprecision);
color = [OFColor colorWithRed: 0.2f
green: 0.5f
blue: 0.1f
alpha: 1.0f];
color = [color colorUsingColorSpace: [OFColorSpace BT2020ColorSpace]];
[color getRed: &red green: &green blue: &blue alpha: &alpha];
OTAssertLessThan(fabsf(red - 0.2758016f), allowedImprecision);
OTAssertLessThan(fabsf(green - 0.4325840f), allowedImprecision);
OTAssertLessThan(fabsf(blue - 0.1219162f), allowedImprecision);
OTAssertLessThan(fabsf(alpha - 1.0f), allowedImprecision);
color = [OFColor colorWithRed: 0.2f
green: 0.5f
blue: 0.1f
alpha: 1.0f];
color = [color colorUsingColorSpace: [OFColorSpace adobeRGBColorSpace]];
[color getRed: &red green: &green blue: &blue alpha: &alpha];
OTAssertLessThan(fabsf(red - 0.3253733f), allowedImprecision);
OTAssertLessThan(fabsf(green - 0.4961037f), allowedImprecision);
OTAssertLessThan(fabsf(blue - 0.1626379f), allowedImprecision);
OTAssertLessThan(fabsf(alpha - 1.0f), allowedImprecision);
}
@end
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