On 9 Apr 2013, at 7:04 PM, Roland King wrote: > I have an attributed string I'm laying out with a CTFrame. The string can > have a trailing space in it, possibly more than one, they are actually > \u3000, IDEOGRAPHIC SPACE. I need them to be treated like a real character > and laid out, even if that breaks onto a new line. Those 'spaces' are > placeholders for small images which can't be embedded in the string (iOS > doesn't allow images in attributed strings like it does on OSX) so I need > them laid out so I can find where they went and overlay the graphics. A > little messy, works better than I expected, apart from this.
We do attachments using U+FFFC OBJECT REPLACEMENT CHARACTER (which Apple also names NSAttachmentCharacter on the desktop) and setting a custom CTRunDelegate to specify the metrics of the attachment image (width, ascent, descent). Then we run through the laid-out text to find the attachment runs and draw their images and so on. This is rather clumsy (why doesn't CTRunDelegate have a drawing callback?) but it gets the job done. I think you can actually use any character rather than U+FFFC there, and it probably affects the line breaking algorithm accordingly. _______________________________________________ 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]
