Instance Method


Returns whether the line being laid out should be broken by a word break at the specified character.


- (BOOL)shouldBreakLineByWordBeforeCharacterAtIndex:(NSUInteger)charIndex;



The index of the character just after the proposed word break would occur.

Return Value

YES if the line should be broken by a word break, NO otherwise.


The typesetter calls this method, if implemented by a subclass, before breaking a line by word wrapping before the character at charIndex, enabling the subclass to control line breaking.

A subclass can override this method to customize the text layout process. If the method returns NO, the typesetter continues looking for a break point.

See Also

Laying out Glyphs

- layoutGlyphsInLayoutManager:startingAtGlyphIndex:maxNumberOfLineFragments:nextGlyphIndex:

Lays out glyphs in the specified layout manager starting at a specified glyph.

- boundingBoxForControlGlyphAtIndex:forTextContainer:proposedLineFragment:glyphPosition:characterIndex:

Returns the bounding rectangle for the specified control glyph with the specified parameters.

- getLineFragmentRect:usedRect:forParagraphSeparatorGlyphRange:atProposedOrigin:

Calculates the line fragment rectangle and line fragment used rectangle for blank lines.

- getLineFragmentRect:usedRect:remainingRect:forStartingGlyphAtIndex:proposedRect:lineSpacing:paragraphSpacingBefore:paragraphSpacingAfter:

Calculates line fragment rectangle, line fragment used rectangle, and remaining rectangle for a line fragment.

- hyphenCharacterForGlyphAtIndex:

Returns the hyphen character to be inserted after the specified glyph.

- hyphenationFactorForGlyphAtIndex:

Returns the hyphenation factor in effect at a specified location.

- shouldBreakLineByHyphenatingBeforeCharacterAtIndex:

Returns whether the line being laid out should be broken by hyphenating at the specified character.

- willSetLineFragmentRect:forGlyphRange:usedRect:baselineOffset:

Called by the typesetter just prior to storing the actual line fragment rectangle location in the layout manager.