I had exactly the same problem and solved it by using the
NSStringDrawingUsesDeviceMetrics option instead of
NSStringDrawingDisableScreenFontSubstitution.
Tim
Am 25.01.2012 um 16:26 schrieb Tony Pollard:
> Hi folks,
>
> I'm having a strange problem with NSAttributedString boundingRectWithSize in
> getting the needed height for a fixed width. It works 99% of the time, but
> it consistently underestimates the height for certain text (by approximately
> one line). There doesn't appear to be a pattern for the text that works and
> the text that fails (tested on 10.6 and 10.7).
>
> The code is:
>
> NSRect textRect = [attrString boundingRectWithSize:NSMakeSize(300.0, 0.0)
> // Width 300, any height (max height also
> fails)
>
> options: NSStringDrawingUsesLineFragmentOrigin | // Needed for
> multi-line
>
> NSStringDrawingDisableScreenFontSubstitution];
>
> The attributed strings are built from data sources. Here's one that fails:
>
> Printing description of attrString:
> n. {
> CdctPhraseType = Grammer;
> NSColor = NSCalibratedRGBColorSpace 0.878431 0.0980392 0.160784 1;
> NSFont = "LucidaGrande 9.00 pt. P [] (0x50bbd0) fobj=0x50b7b0, spc=2.85";
> }A hopper is a device shaped like a large funnel, in which substances such as
> grain, coal, animal food, or sand can be stored.{
> CdctPhraseType = Transition;
> NSColor = NSCalibratedRGBColorSpace 0.227451 0.54902 0.258824 1;
> NSFont = "LucidaGrande 9.00 pt. P [] (0x50bbd0) fobj=0x50b7b0, spc=2.85";
> }
> {
> }F.ex: Large trailers came along and tipped it into a big hopper.{
> CdctPhraseType = Transition;
> NSColor = NSCalibratedRGBColorSpace 0.227451 0.54902 0.258824 1;
> NSFont = "LucidaGrande 9.00 pt. P [] (0x50bbd0) fobj=0x50b7b0, spc=2.85";
> }
>
> The resulting Rect is too short by about 9 pixels. Anyone had the same
> problem?
>
> Tony Pollard
>
>
>
>
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