The precise definition of the point specified by the argument is the top left corner of the text container containing the glyph range in the focused view coordinate system.
Aki On Jan 31, 2011, at 3:18 PM, Graham Cox wrote: > > On 01/02/2011, at 9:09 AM, Todd Heberlein wrote: > >> I'm doing a simple experiment using NSTextStorage, NSLayoutManager, >> NSTextContainer to draw some text (I am basing this on the CircleView >> example because I want some of that orientation power later). >> >> I have found that when rendering the text using >> drawGlyphsForGlyphRange:atPoint:, I don't get the text where I expected. It >> is higher than I expect. Furthermore, when I draw a rectangle around the >> text (or try to) using the rectangle from usedRectForTextContainer:, the >> text is outside the rectangle (in short, the rectangle is where I expect it >> to be, but the text glyphs are not). >> >> Is there a secret incantation that I am missing? > > > One thing that caught me out at first was that text is laid out based on the > top, left of the glyph's bounding box, not on some notional baseline. The > glyphs are positioned so that the baselines line up, but this is done by > offsetting the top edge of the bbox. So if you assume that it's the baseline > you're setting, text will be placed generally higher than expected. Is that > what's happening? > > --Graham > > > _______________________________________________ > > 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/aki%40apple.com > > This email sent to a...@apple.com _______________________________________________ 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
