TextSelectionToolbarLayoutDelegate class
A SingleChildLayoutDelegate for use with CustomSingleChildLayout that positions its child above anchorAbove if it fits, or otherwise below anchorBelow.
Primarily intended for use with toolbars or context menus.
See also:
- TextSelectionToolbar, which uses this to position itself.
- CupertinoTextSelectionToolbar, which also uses this to position itself.
- Inheritance
-
- Object
- SingleChildLayoutDelegate
- TextSelectionToolbarLayoutDelegate
Constructors
- TextSelectionToolbarLayoutDelegate({required Offset anchorAbove, required Offset anchorBelow, bool? fitsAbove})
- Creates an instance of TextSelectionToolbarLayoutDelegate.
Properties
- anchorAbove → Offset
-
The focal point above which the toolbar attempts to position itself.
final
- anchorBelow → Offset
-
The focal point above which the toolbar attempts to position itself.
final
- fitsAbove → bool?
-
Whether or not the child should be considered to fit above anchorAbove.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
getConstraintsForChild(
BoxConstraints constraints) → BoxConstraints -
The constraints for the child given the incoming constraints.
override
-
getPositionForChild(
Size size, Size childSize) → Offset -
The position where the child should be placed.
override
-
getSize(
BoxConstraints constraints) → Size -
The size of this object given the incoming constraints.
inherited
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
shouldRelayout(
covariant TextSelectionToolbarLayoutDelegate oldDelegate) → bool -
Called whenever a new instance of the custom layout delegate class is
provided to the RenderCustomSingleChildLayoutBox object, or any time
that a new CustomSingleChildLayout object is created with a new instance
of the custom layout delegate class (which amounts to the same thing,
because the latter is implemented in terms of the former).
override
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited