Hello Keith!
- (void)forceInitialLayout {NSInteger charIndex = (50000 > [[self textStorage] length] ? [[self textStorage] length] : 50000);if (charIndex > 0) { charIndex -= 1; [layoutManagerlocationForGlyphAtIndex:charIndex];
You shouldn't play loose which character/glyph indexes. I'm sure you know, but the mapping between chars/glyphs is arbitrary and your method could theoretically trigger an out-of-bounds exception. In practice it probably won't because I believe the Cocoa typesetter always produces more glyphs than characters (eg: inserting null glyphs as padding).
That point aside, I've also experienced issues with when forcing layout to a specific character index. Notably that the the mapping from characters to glyphs doesn't seem stable until layout is complete. I've seen -[NSLayoutManager numberOfGlyphs] change before/ after layout! Perhaps the TextEdit code you quoted fails for that reason, eg: the mapping from the final character index (the image attachment) to its corresponding glyph changes after layout finishes.
My solution was to conditionally use -[NSLayoutManager ensureLayoutForCharacterRange:] when running on Leopard or later. That punts the problem entirely to Apple to solve. Another thing to check: do you have discontinuous layout enabled? I never did, but perhaps that's a factor for you.
~Martin _______________________________________________ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
