Instance Method

lineBreakBeforeIndex:withinRange:

Returns the appropriate line break when the character at the index won’t fit on the same line as the character at the beginning of the range.

Declaration

- (NSUInteger)lineBreakBeforeIndex:(NSUInteger)location withinRange:(NSRange)aRange;

Parameters

index

The index in the attributed string.

aRange

The range.

Return Value

Returns the index of the closest character before index within aRange, that can be placed on a new line when laying out text. Returns NSNotFound if no line break is possible before index.

Discussion

Raises an NSRangeException if index or any part of aRange lies beyond the end of the receiver’s characters.

See Also

Calculating Linguistic Units

- doubleClickAtIndex:

Returns the range of characters that form a word (or other linguistic unit) surrounding the given index, taking language characteristics into account.

- lineBreakByHyphenatingBeforeIndex:withinRange:

Returns the index of the closest character before the given index, and within the given range, that can be placed on a new line by hyphenating.

- nextWordFromIndex:forward:

Returns the index of the first character of the word after or before the given index.