NSButton - set text color in disabled mode

问题

For some reason, when my button is disabled, the text color turns white. I want it to stay black - how can i do that?

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.

来源：https://stackoverflow.com/questions/6370500/nsbutton-set-text-color-in-disabled-mode

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objective-c

cocoa

macos

nsbutton