Well, turns out you can use NSString's:
- (void)enumerateSubstringsInRange:options:usingBlock: Using the NSStringEnumerationByComposedCharacterSequences option, you get the actual character count. But that's just a little bit nearer to the solution, as I'm guessing I need to intervene earlier to prevent the glyph count to got to hight. -Michael On 07.07.2013, at 14:46, Michael Starke <michael.sta...@hicknhack-software.com> wrote: > Hello List, > > I'm somewhat heading down a road of pain with this. Maybe I approach the > problem from the wrong angle, so I wanted to ask for advice. > > My goal is to have a NSTextField that can be toggled to display a Password in > clear or bulleted format. Sort of NSTextField - NSSecureTextField > I'm using a custom NSTextFieldCell to get a different look of the cell and > also to add a toggle Button inside the Field. > > The drawing of the actual control is easy. As I can use a NSSecureTextField > cell to draw hidden, and my normal cell to draw unhidden passwords. > > The point where I'm struggling is the field editor. > > My solutions (with none working fully) > > > #1 Use a NSSecureTextField and supply a standard NSTextView Field editor to > display plain text > That's not working, as NSSecureTextField demands a NSSecureTextField as it's > field editor. So the only way would be to subclass private API and buble all > calls up to NSTextView's implementation. > > #2 Use a NSTextField and supply a custom FieldEditor that can draw bullets > like the NSSecureTextField can. > > This leads to a custom NSLayoutManager and then the problems start. > > I tried supplying my own implementation of > > - (NSUInteger)getGlyphsInRange:(NSRange)glyphRange > glyphs:(NSGlyph *)glyphBuffer > characterIndexes:(NSUInteger *)charIndexBuffer > glyphInscriptions:(NSGlyphInscription *)inscribeBuffer > elasticBits:(BOOL *)elasticBuffer > bidiLevels:(unsigned char *)bidiLevelBuffer; > > - (void)drawGlyphsForGlyphRange:(NSRange)glyphsToShow atPoint:(NSPoint)origin > > but I'm having difficulties with custom fonts, like if someone uses emojis > I'm unable to get the correct character count, as emojis consist of 2bytes, > not 1. The string length gets reported with > 2. And the drawing is done a bit lower than the normal bullets. > > I'm beginning to think, that I'm at a very low level – even too low – and > this problem can be dealt with at much higher points, but thus far I've not > found a way to do it. > > Maybe I should spent some weeks digging through al the text system > documentation :-( > > #3 An NSTabView with the two input fields side by side and just toggle them > back and forth. > Might be the easy way out but it seemed so overblown to use so many views for > this "simple" problem. Maybe it's the simples solution altogether. > > > -Michael > > > ___m i c h a e l s t a r k e____ > geschäftsführer > HicknHack Software GmbH > www.hicknhack-software.com > > ___k o n t a k t____ > +49 (170) 3686136 > cont...@hicknhack.com > > ___H i c k n H a c k S o f t w a r e G m b H____ > geschäftsführer - maik lathan | andreas reischuck | michael starke > bayreuther straße 32 > 01187 dresden > amtsgericht dresden HRB 30351 > sitz - dresden > > > _______________________________________________ > > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) > > Please do not post admin requests or moderator comments to the list. > Contact the moderators at cocoa-dev-admins(at)lists.apple.com > > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/cocoa-dev/michael.starke%40hicknhack-software.com > > This email sent to michael.sta...@hicknhack-software.com ___m i c h a e l s t a r k e____ geschäftsführer HicknHack Software GmbH www.hicknhack-software.com ___k o n t a k t____ +49 (170) 3686136 cont...@hicknhack.com ___H i c k n H a c k S o f t w a r e G m b H____ geschäftsführer - maik lathan | andreas reischuck | michael starke bayreuther straße 32 01187 dresden amtsgericht dresden HRB 30351 sitz - dresden _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
