NSPopUpButton White text - macos

Question

I have created a NSPopUpButton in my app in a custom view which has a black fill. I would now like to make the NSPopUpButton have a white text color but I do not seem to be able to do this. How should I go about doing this?
Thanks

Answer 1

That's easy. You just need to override the -[NSPopUpButtonCell drawTitle:withFrame:inView], and then can change everything about title, like color, font, frame , etc. Here is a example below. Hope that can help you.
Objective-C:
#interface MyPopUpButtonCell : NSPopUpButtonCell
#property (nonatomic, readwrite, copy) NSColor *textColor;
#end
#implementation MyPopUpButtonCell
- (NSRect)drawTitle:(NSAttributedString*)title withFrame:(NSRect)frame inView:(NSView*)controlView {
NSRect newFrame = NSMakeRect(NSMinX(frame), NSMinY(frame)+2, NSWidth(frame), NSHeight(frame));
if (self.textColor) {
NSMutableAttributedString *newTitle = [[NSMutableAttributedString alloc] initWithAttributedString:title];
NSRange range = NSMakeRange(0, newTitle.length);
[newTitle addAttribute:NSForegroundColorAttributeName value:self.textColor range:range];
return [super drawTitle:newTitle withFrame:newFrame inView:controlView];
}else {
return [super drawTitle:title withFrame:newFrame inView:controlView];
}
}
#end
Swift:
class MyPopUpButtonCell: NSPopUpButtonCell {
var textColor: NSColor? = nil
override
func drawTitle(_ title: NSAttributedString, withFrame frame: NSRect, in controlView: NSView) -> NSRect {
if self.textColor != nil {
let attrTitle = NSMutableAttributedString.init(attributedString: title)
let range = NSMakeRange(0, attrTitle.length)
attrTitle.addAttributes([NSAttributedString.Key.foregroundColor : self.textColor!], range: range)
return super.drawTitle(attrTitle, withFrame: frame, in: controlView)
}else {
return super.drawTitle(title, withFrame: frame, in: controlView)
}
}
}

Answer 2

Use -[NSButton setAttributedTitle:], bearing in mind that NSPopUpButton is a subclass of NSButton. Make a mutable copy of the attributed title, set its foreground color to white, and then set that as the new attributed title.
NSMutableAttributedString* myTitle = [[button.attributedTitle mutableCopy] autorelease];
NSRange allRange = NSMakeRange( 0, [myTitle length] );
myTitle addAttribute: NSForegroundColorAttributeName
value: [NSColor whiteColor]
range: allRange];
button.attributedTitle = myTitle;