For some reason, when my button is disabled, the text color turns white. I want it to stay black - how can i do that?
问题:
回答1:
You can set text, image, colors, fonts, etc. for different status of a button: normal, highlighted, disabled, etc.
You can do that in Interface Builder by changing the state with the dropdown list.
回答2:
You can subclass NSButtonCell and override a method:
- (NSRect)drawTitle:(NSAttributedString *)title withFrame:(NSRect)frame inView:(NSView *)controlView
{
if (![self isEnabled]) {
return [super drawTitle:[self attributedTitle] withFrame:frame inView:controlView];
}
return [super drawTitle:title withFrame:frame inView:controlView];
}
In this way, when button is disabled, the text will have the same color of text when button is enabled.
回答3:
Also check out this
[btnInfo.cell setImageDimsWhenDisabled:NO];
回答4:
You can override a private method in NSButtonCell:
- (BOOL)_textDimsWhenDisabled {
return NO;
}
- (BOOL)_shouldDrawTextWithDisabledAppearance {
return NO;
}
I filled a radar for a public method: rdar://19218619
回答5:
In Mojave, any override of draw methods makes it impossible to change the backgroundColor of the NSbutton when highlighted. So I would rather recommend to use
- (BOOL)_shouldDrawTextWithDisabledAppearance
for this purpose. If you are using Swift 4, I would do the following in the Bridging header:
#import <AppKit/AppKit.h>
@interface NSButtonCell (Private)
- (BOOL)_shouldDrawTextWithDisabledAppearance;
@end
And in the subclass of NSButtonCell:
override func _shouldDrawTextWithDisabledAppearance() -> Bool {
return false
}
回答6:
Update for swift 4:
override func drawTitle(_ title: NSAttributedString, withFrame frame: NSRect, in controlView: NSView) -> NSRect {
if !self.isEnabled {
return super.drawTitle(self.attributedTitle, withFrame: frame, in: controlView)
}
return super.drawTitle(title, withFrame: frame, in: controlView)
}
This will make text attributes the same as when button is enabled.