A set of optional methods implemented by delegates of layout manager objects.
SDKs
- iOS 7.0+
- macOS 10.6+
- Mac Catalyst 13.0+
- tvOS 9.0+
Frameworks
- UIKit
- App
Kit
Declaration
protocol NSLayoutManagerDelegate
ProtocolNSLayout
NSLayout
Topics
Invalidating Glyphs and Layout
func layoutInforms the delegate that the given layout manager has invalidated layout information (not glyph information).
func layoutEnables customization of the initial glyph generation process.
func layoutReturns the control character action for the control character at the given character index.
struct NSLayoutActions caused by control characters.
Responding to Text Container Layout
func layoutInforms the delegate that the layout manager finished laying out text in the specified text container.
func layoutInforms the delegate that the layout manager will invalidate layout due to a change in the geometry of the specified text container.
Handling Line Fragments
func layoutAsks the delegate to determine whether to break the line at the specified character.
func layoutAsks the delegate to determine whether to break the line at the specified word.
func layoutReturns the amount of space to add to the end of a line.
func layoutReturns the amount of space to add at the end of a paragraph.
func layoutReturns the amount of space to add at the beginning of a paragraph.
func layoutReturns the bounding rectangle for the specified control glyph with the specified parameters.
func layoutCustomizes the line fragment geometry before committing it to the layout cache.
Managing Temporary Attribute Support
func layoutAsks the delegate whether to use temporary attributes when drawing the text.
Relationships
Inherits From
See Also
Layout
class NSLayoutAn object that coordinates the layout and display of text characters.
protocol NSTextA set of methods that define the orientation of text for an object.