The documentation for [NSFontManager modifyFont:] doesn't make sense to me. It says:
When a responder replies by providing a font to convert in a convertFont: message, the receiver converts the font in the manner specified by sender. The conversion is determined by sending a tag message to sender and invoking a corresponding method: Sender’s Tag Method Used NSNoFontChangeAction None; the font is returned unchanged. NSViaPanelFontAction The Font panel’s panelConvertFont:. NSAddTraitFontAction convertFont:toHaveTrait:. NSRemoveTraitFontAction convertFont:toNotHaveTrait:. NSSizeUpFontAction convertFont:toSize:. NSSizeDownFontAction convertFont:toSize:. NSHeavierFontAction convertWeight:ofFont:. NSLighterFontAction convertWeight:ofFont:. Consider the case of wanting toggle the "bold" trait of a font. I set the sender's tag to NSAddTraitFontAction, but how do I specify the bold trait, rather than any other trait, e.g. italic? The tag of the sender doesn't have enough information to set the traits mask and there is no other place this information could be supplied that I can see. What I'm trying to do is to add a toolbar button that can toggle the traits of a font, so it has segments for bold, italic, etc. If I make the button invoke [NSFontManager addFontTrait:], then I can turn ON bold, but I can't turn it off. In fact, I'm puzzled as to how the standard "Bold" text menu item works, because it too simply calls addFontTrait: (according to the action set in IB) and has a tag indicating bold. How then does it REMOVE the bold trait? Is the Font Manager manipulating the action of the menu item when it validates it? Would make sense but I can find no documentation to that effect. How can I achieve my aim? --Graham _______________________________________________ Cocoa-dev mailing list ([email protected]) 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 [email protected]
