Layout priority used to indicate the relative importance of constraints, allowing Auto Layout to make appropriate tradeoffs when satisfying the constraints of the system as a whole.
SDK
- macOS 10.7+
Framework
- App
Kit
Declaration
struct Priority
StructureNSLayout
NSLayout
Topics
Constants
static let required: NSLayoutA required constraint.
static let defaultPriority level with which a button resists compressing its content.
static let dragAppropriate priority level for a drag that may end up resizing the window.
static let windowPriority level for the window’s current size.
static let dragPriority level at which a split view divider, say, is dragged.
static let defaultPriority level at which a button hugs its contents horizontally.
static let fittingWhen you send a fitting message to a view, the smallest size that is large enough for the view's contents is computed.
Initializers
Relationships
Conforms To
See Also
Getting the Layout Priority
var priority: UILayoutThe priority of the constraint.
struct UILayoutThe layout priority is used to indicate to the constraint-based layout system which constraints are more important, allowing the system to make appropriate tradeoffs when satisfying the constraints of the system as a whole.
static let required: UILayoutA required constraint.
static let defaultThe priority level with which a button resists compressing its content.
static let defaultThe priority level at which a button hugs its contents horizontally.
static let fittingThe priority level with which the view wants to conform to the target size in that computation.