A set of optional methods implemented by delegates of NSLayout 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 customizing the initial glyph generation process.
func layoutReturns the control character action for the control character at the given character index.
Handling Layout for Text Containers
func layoutInforms the delegate that the given layout manager has finished laying out text in the given text container.
func layoutSent right before the layout manager invalidates layout due to the text container changing geometry.
Handling Line Fragments
func layoutSent while determining the hyphenation point.
func layoutSent while determining the soft line break point.
func layoutReturns the spacing after the line ending with the given glyph index.
func layoutReturns the paragraph spacing after the line ending with the given glyph index.
func layoutReturns the paragraph spacing before the line starting with the given glyph index.
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 layoutSent when the layout manager is drawing and needs to decide whether or not to use temporary attributes.
Relationships
Inherits From
See Also
Layout
class NSLayoutAn object that coordinates the layout and display of characters held in an NSText object.
protocol NSTextA set of methods that define the orientation of text for an object.