cocoa - NSPoint/NSRect 来自 NSTextView 中的字符

Question

所以我试图获取与 NSTextView 中特定字符的位置相对应的 NSPoint 或 NSRect。这就是我到目前为止所拥有的(效果不是很好，结果似乎有点不可预测。

NSRange theTextRange = [[theTextView layoutManager] glyphRangeForCharacterRange:[theTextStorage editedRange] actualCharacterRange:NULL];
NSRect theTextRect = [[theTextView layoutManager] boundingRectForGlyphRange:theTextRange inTextContainer:[theTextView textContainer]];

Answer 1

由 boundingRectForGlyphRange:inTextContainer: 返回的矩形位于容器坐标中。如果你想获得相对于 TextView 的矩形，你需要对此进行调整:

NSRange theTextRange = [[textView layoutManager] glyphRangeForCharacterRange:textRange actualCharacterRange:NULL];
NSRect layoutRect = [[textView layoutManager] boundingRectForGlyphRange:theTextRange inTextContainer:[textView textContainer]];
NSPoint containerOrigin = [textView textContainerOrigin];
layoutRect.origin.x += containerOrigin.x;
layoutRect.origin.y += containerOrigin.y;