Instance Method

glyphRangeForCharacterRange:actualCharacterRange:

Returns the range of glyphs that are generated from the characters in the given character range.

Declaration

- (NSRange)glyphRangeForCharacterRange:(NSRange)charRange actualCharacterRange:(NSRangePointer)actualCharRange;

Parameters

charRange

The character range for which to return the generated glyph range.

actualCharRange

If not NULL, on output, points to the actual range of characters that fully define the glyph range returned. This range may be identical to or slightly larger than the requested character range. For example, if the text storage contains the characters "O" and "¨“, and the glyph store contains the single precomposed glyph "¨Ö”, and if charRange encloses only the first or second character, then actualCharRange is set to enclose both characters.

Return Value

The range of glyphs generated by charRange.

Discussion

If the length of charRange is 0, the resulting glyph range is a zero-length range just after the glyph(s) corresponding to the preceding character, and actualCharRange will also be zero-length. If charRange extends beyond the text length, the method truncates the result to the number of glyphs in the text.

If noncontiguous layout is not enabled, this method forces the generation of glyphs for all characters up to and including the end of the specified range.

See Also

Performing Advanced Layout Queries

- boundingRectForGlyphRange:inTextContainer:

Returns a single bounding rectangle (in container coordinates) enclosing all glyphs and other marks drawn in the given text container for the given glyph range, including glyphs that draw outside their line fragment rectangles and text attributes such as underlining.

- characterIndexForPoint:inTextContainer:fractionOfDistanceBetweenInsertionPoints:

Returns the index of the character falling under the given point, expressed in the given container's coordinate system.

- characterRangeForGlyphRange:actualGlyphRange:

Returns the range of characters that generated the glyphs in the given glyph range.

- enumerateEnclosingRectsForGlyphRange:withinSelectedGlyphRange:inTextContainer:usingBlock:

Enumerates enclosing rectangles for the given glyph range in the given text container.

- enumerateLineFragmentsForGlyphRange:usingBlock:

Enumerates line fragments intersecting with the given glyph range.

- fractionOfDistanceThroughGlyphForPoint:inTextContainer:

This method is a primitive for glyphIndexForPoint:inTextContainer:fractionOfDistanceThroughGlyph:. You should always call the main method, not the primitives.

- getLineFragmentInsertionPointsForCharacterAtIndex:alternatePositions:inDisplayOrder:positions:characterIndexes:

Returns insertion points in bulk for a given line fragment.

- glyphIndexForPoint:inTextContainer:

This method is a primitive for glyphIndexForPoint:inTextContainer:fractionOfDistanceThroughGlyph:. You should always call the main method, not the primitives.

- glyphIndexForPoint:inTextContainer:fractionOfDistanceThroughGlyph:

Returns the index of the glyph falling under the given point, expressed in the given container's coordinate system.

- glyphRangeForBoundingRect:inTextContainer:

Returns the smallest contiguous range for glyphs that are laid out wholly or partially within the given rectangle in the given text container.

- glyphRangeForBoundingRectWithoutAdditionalLayout:inTextContainer:

Returns the smallest contiguous range for glyphs that are laid out wholly or partially within the given rectangle in the given text container.

- glyphRangeForTextContainer:

Returns the range of glyphs laid out within the given text container.

- rangeOfNominallySpacedGlyphsContainingIndex:

Returns the range for the glyphs around the given glyph that can be displayed using only their advancements from the font, without pairwise kerning or other adjustments to spacing.