macOS 12.3, Xcode Version 8.2.1 (8C1002).
I am trying to get bounding rects in a TextView:
NSRange glyphRange = [ layoutManager glyphRangeForCharacterRange:
someCharRange
actualCharacterRange: NULL
];
NSTextContainer *container = [ layoutManager textContainerForGlyphAtIndex:
glyphRange.location
effectiveRange: NULL
];
CGRect rect = [ layoutManager boundingRectForGlyphRange: glyphRange
inTextContainer: container ];
The problem:
using the ruler of the TextView I know the actual x-range of someCharRange.
But the rect is much bigger on both sides.
E.g. selecting a string which occupies 1 cm from 19 cm to 20 cm on the ruler I
get a rect : 18.16 + 3.63 = 21.79
The error (not very surprisingly) depends on the font used.
How can I get a rectangle from my string which closely resembles what is seen
on the screen?
Gerriet.
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