LayoutConstraint.Attribute
The part of the object’s visual representation that should be used to get the value for the constraint.
public enum Attribute: Int
Inheritance
Int
Enumeration Cases
left
The left side of the object’s alignment rectangle.
case left
right
The right side of the object’s alignment rectangle.
case right
top
The top of the object’s alignment rectangle.
case top
bottom
The bottom of the object’s alignment rectangle.
case bottom
leading
The leading edge of the object’s alignment rectangle.
case leading
trailing
The trailing edge of the object’s alignment rectangle.
case trailing
width
The width of the object’s alignment rectangle.
case width
height
The height of the object’s alignment rectangle.
case height
centerX
Tne center along the x-axis of the object’s alignment rectangle.
case centerX
centerY
The center along the y-axis of the object’s alignment rectangle.
case centerY
lastBaseline
The object’s baseline. For objects with more than one line of text, this is the baseline for the bottom-most line of text.
case lastBaseline
firstBaseline
The object’s baseline. For objects with more than one line of text, this is the baseline for the top-most line of text.
case firstBaseline
leftMargin
The object’s left margin. For View objects, the margins are defined by their layoutMargins property.
case leftMargin
rightMargin
The object’s right margin. For View objects, the margins are defined by their layoutMargins property.
case rightMargin
topMargin
The object’s top margin. For View objects, the margins are defined by their layoutMargins property.
case topMargin
bottomMargin
The object’s bottom margin. For View objects, the margins are defined by their layoutMargins property.
case bottomMargin
leadingMargin
The object’s leading margin. For View objects, the margins are defined by their layoutMargins property.
case leadingMargin
trailingMargin
The object’s trailing margin. For View objects, the margins are defined by thier layoutMargins property.
case trailingMargin
centerXWithinMargins
The center along the x-axis between the object’s left and right margin. For View objects, the margins are defined by their layoutMargins property.
case centerXWithinMargins
centerYWithinMargins
The center along the y-axis between the object’s top and bottom margin. For View objects, the margins are defined by thier layoutMargins property.
case centerYWithinMargins
notAnAttribute
A placeholder value that is used to indicate taht the constraint’s second item and second attribute are not used in any calculations.
case notAnAttribute