Blockly Framework Reference

LayoutFlag

public struct LayoutFlag: OptionSet

Flags for marking which parts of a Layout that need to be updated by its delegate.

A total of 64 flags can be defined:

• Common flags are defined by Layout.Flag_*, up to a maximum of 14 flags, which start at the highest order bit (ie. 63, 62, etc).
• Subclasses of Layout can define up to 50 custom layout flags, which start at the lowest order bit (ie. 0, 1, etc).

Properties

• rawValue

  Declaration

  Swift

  public let rawValue: UInt64

Initializers

• init(_:)

  Initializer for Layout subclasses looking to define a custom layout flag.

  Note

  An assertion is made in this method that lowestOrderBitIndex < 50.

  Declaration

  Swift

  public init(_ lowestOrderBitIndex: UInt64)

• init(rawValue:)

  Declaration

  Swift

  public init(rawValue: UInt64)

Public

• hasFlagSet()

  Return if a flag has been set for this value.

  Declaration

  Swift

  public func hasFlagSet() -> Bool

  Return Value

  The equivalent of self != LayoutFlag.None.

• intersectsWith(_:)

  Declaration

  Swift

  public func intersectsWith(_ other: LayoutFlag) -> Bool

  Return Value

  True if self shares at least one common flag with other.