Mac OS X: strikethrough the text in a label (NSTextField)
Is it possible to strikethrough the text in a label (NSTextField
)?
I have tried t开发者_开发百科o use the Font Panel, but apparently these are ignored when I try to set them:
You can do it like this, assuming _textField
is set as an outlet in your xib:
- (void) awakeFromNib
{
NSMutableAttributedString *as = [[_textField attributedStringValue] mutableCopy];
[as addAttribute:NSStrikethroughStyleAttributeName value:(NSNumber *)kCFBooleanTrue range:NSMakeRange(0, [as length])];
[_textField setAttributedStringValue:[as autorelease]];
}
Edit:
If you want to write a custom strikethrough NSTextFieldCell
subclass instead, the only method that should be necessary to override is setStringValue:
- (void) setStringValue:(NSString *)aString
{
NSMutableAttributedString *as = [[NSMutableAttributedString alloc] initWithString:aString];
[as addAttribute:NSStrikethroughStyleAttributeName value:(NSNumber *)kCFBooleanTrue range:NSMakeRange(0, [as length])];
[self setAttributedStringValue:[as autorelease]];
}
For me it works great combining the approach by sbooth of creating a custom NSTextFieldCell
and overriding drawInteriorWithFrame:inView:
as posted below:
- (void) drawInteriorWithFrame:(NSRect)cellFrame inView:(NSView *)controlView {
[self setAttributedStringFromStringValue];
[super drawInteriorWithFrame:cellFrame inView:controlView];
}
- (void) setAttributedStringFromStringValue { // add strikethrough
NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:self.stringValue];
[attributedString addAttribute:NSStrikethroughStyleAttributeName value:(NSNumber *)kCFBooleanTrue range:NSMakeRange(0, attributedString.length)];
[self setAttributedStringValue:attributedString];
}
精彩评论