Skip to content

Instantly share code, notes, and snippets.

@pfandrade pfandrade/DynamicColor.h
Last active Apr 2, 2019

Embed
What would you like to do?
Dynamic NSColor subclass to support Dark Mode on macOS prior to 10.13
@interface DynamicColor : NSColor
- (instancetype)initWithAquaColor:(NSColor *)aquaColor
darkAquaColor:(NSColor *__nullable)darkAquaColor;
- (NSColor *)effectiveColor;
@end
#import "DynamicColor.h"
#define FORWARD( PROP, TYPE ) \
- (TYPE)PROP { return [self.effectiveColor PROP]; }
@interface DynamicColor ()
@property (nonatomic, strong) NSColor *aquaColor;
@property (nonatomic, strong, nullable) NSColor *darkAquaColor;
@property (nonatomic, strong, readonly) NSColor *effectiveColor;
@end
@implementation DynamicColor
- (instancetype)initWithAquaColor:(NSColor *)aquaColor
darkAquaColor:(NSColor *)darkAquaColor
{
self = [super init];
if (self) {
_aquaColor = aquaColor;
_darkAquaColor = darkAquaColor;
}
return self;
}
+ (BOOL)supportsSecureCoding
{
return YES;
}
- (instancetype)initWithCoder:(NSCoder *)coder
{
self = [super initWithCoder:coder];
if (self) {
_aquaColor = [coder decodeObjectOfClass:[NSColor class] forKey:@"aquaColor"];
_darkAquaColor = [coder decodeObjectOfClass:[NSColor class] forKey:@"darkAquaColor"];
}
return self;
}
- (void)encodeWithCoder:(NSCoder *)aCoder
{
[super encodeWithCoder:aCoder];
[aCoder encodeObject:self.aquaColor forKey:@"aquaColor"];
if (self.darkAquaColor) {
[aCoder encodeObject:self.darkAquaColor forKey:@"darkAquaColor"];
}
}
- (NSColor *)effectiveColor
{
if (@available(macOS 10.14, *)) {
NSAppearance *appearance = [NSAppearance currentAppearance] ?: [NSApp effectiveAppearance];
NSAppearanceName appearanceName = [appearance bestMatchFromAppearancesWithNames:@[NSAppearanceNameAqua, NSAppearanceNameDarkAqua]];
if (self.darkAquaColor != nil && [appearanceName isEqualToString:NSAppearanceNameDarkAqua]) {
return self.darkAquaColor;
}
}
return self.aquaColor;
}
FORWARD(colorSpace, NSColorSpace *)
- (NSColor *)colorUsingColorSpace:(NSColorSpace *)space
{
return [self.effectiveColor colorUsingColorSpace:space];
}
FORWARD(colorSpaceName, NSColorSpaceName)
- (NSColor *)colorUsingColorSpaceName:(NSColorSpaceName)name
{
return [self.effectiveColor colorUsingColorSpaceName:name];
}
FORWARD(numberOfComponents, NSInteger)
- (void)getComponents:(CGFloat *)components
{
return [self.effectiveColor getComponents:components];
}
#pragma mark - RGB colorspace
FORWARD(redComponent, CGFloat)
FORWARD(greenComponent, CGFloat)
FORWARD(blueComponent, CGFloat)
- (void)getRed:(nullable CGFloat *)red green:(nullable CGFloat *)green blue:(nullable CGFloat *)blue alpha:(nullable CGFloat *)alpha
{
return [self.effectiveColor getRed:red green:green blue:blue alpha:alpha];
}
#pragma mark - HSB colorspace
FORWARD(hueComponent, CGFloat)
FORWARD(saturationComponent, CGFloat)
FORWARD(brightnessComponent, CGFloat)
- (void)getHue:(nullable CGFloat *)hue saturation:(nullable CGFloat *)saturation brightness:(nullable CGFloat *)brightness alpha:(nullable CGFloat *)alpha
{
return [self.effectiveColor getHue:hue saturation:saturation brightness:brightness alpha:alpha];
}
#pragma mark - Gray colorspace
FORWARD(whiteComponent, CGFloat)
- (void)getWhite:(CGFloat *)white alpha:(CGFloat *)alpha
{
return [self.effectiveColor getWhite:white alpha:alpha];
}
#pragma mark - CMYK colorspace
FORWARD(cyanComponent, CGFloat)
FORWARD(magentaComponent, CGFloat)
FORWARD(yellowComponent, CGFloat)
FORWARD(blackComponent, CGFloat)
- (void)getCyan:(nullable CGFloat *)cyan magenta:(nullable CGFloat *)magenta yellow:(nullable CGFloat *)yellow black:(nullable CGFloat *)black alpha:(nullable CGFloat *)alpha
{
return [self.effectiveColor getCyan:cyan magenta:magenta yellow:yellow black:black alpha:alpha];
}
#pragma mark - Others
FORWARD(alphaComponent, CGFloat)
FORWARD(CGColor, CGColorRef)
FORWARD(catalogNameComponent, NSColorListName)
FORWARD(colorNameComponent, NSColorName)
FORWARD(localizedCatalogNameComponent, NSColorListName)
FORWARD(localizedColorNameComponent, NSString *)
- (void)setStroke
{
[self.effectiveColor setStroke];
}
- (void)setFill
{
[self.effectiveColor setFill];
}
- (void)set
{
[self.effectiveColor set];
}
- (nullable NSColor *)highlightWithLevel:(CGFloat)val
{
return [self.effectiveColor highlightWithLevel:val];
}
- (NSColor *)shadowWithLevel:(CGFloat)val
{
return [self.effectiveColor shadowWithLevel:val];
}
- (NSColor *)colorWithAlphaComponent:(CGFloat)alpha
{
return [self.effectiveColor colorWithAlphaComponent:alpha];
}
- (nullable NSColor *)blendedColorWithFraction:(CGFloat)fraction ofColor:(NSColor *)color
{
return [self.effectiveColor blendedColorWithFraction:fraction ofColor:color];
}
- (NSColor *)colorWithSystemEffect:(NSColorSystemEffect)systemEffect NS_AVAILABLE_MAC(10_14)
{
return [self.effectiveColor colorWithSystemEffect:systemEffect];
}
@end
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
You can’t perform that action at this time.