Contents

strikethroughGlyphRange(_:strikethroughType:lineFragmentRect:lineFragmentGlyphRange:containerOrigin:)

Calculates and draws strikethrough for the specified glyphs.

Declaration

func strikethroughGlyphRange(_ glyphRange: NSRange, strikethroughType strikethroughVal: NSUnderlineStyle, lineFragmentRect lineRect: CGRect, lineFragmentGlyphRange lineGlyphRange: NSRange, containerOrigin: CGPoint)

Parameters

  • glyphRange:

    The range of glyphs for which to draw a strikethrough. The range must belong to a single line fragment rectangle (as returned by Linefragmentrect(forglyphat:effectiverange:)).

  • strikethroughVal:

    The style of underlining to draw. This value is a mask derived from the value for Nsunderlinestyleattributename—for example, (NSUnderlinePatternDash | NSUnderlineStyleThick | NSUnderlineByWordMask). Subclasses can define custom underlining styles.

  • lineRect:

    The line fragment rectangle containing the glyphs to draw strikethrough for.

  • lineGlyphRange:

    The range of all glyphs within lineRect.

  • containerOrigin:

    The origin of the line fragment rectangle’s NSTextContainer in its NSTextView.

Discussion

This method determines which glyphs actually need to have a strikethrough drawn based on strikethroughVal. After determining which glyphs to draw strikethrough on, this method invokes drawStrikethrough(forGlyphRange:strikethroughType:baselineOffset:lineFragmentRect:lineFragmentGlyphRange:containerOrigin:) for each contiguous range of glyphs that requires it.

See Also

Drawing