paragraphSpacing(beforeGlyphAt:withProposedLineFragmentRect:)
Returns the number of points of space—added before a paragraph—that is in effect before the specified glyph.
Declaration
func paragraphSpacing(beforeGlyphAt glyphIndex: Int, withProposedLineFragmentRect rect: NSRect) -> CGFloatParameters
- glyphIndex:
The index of the glyph in question.
- rect:
The line fragment rectangle of the first line in the paragraph.
Return Value
The number of points of space—added before a paragraph—that is in effect before the glyph specified by glyphIndex.
Discussion
The typesetter adds the number of points specified in the return value to the top of the line fragment rectangle specified by rect (but not to the used line fragment rectangle for that line). Paragraph spacing added before a paragraph correlates to the value returned by the paragraphSpacingBefore method of NSParagraphStyle, which you can set using the paragraphSpacingBefore method of NSMutableParagraphStyle.