SliverLayoutGeometry class
Describes the placement of a child in a RenderSliverLayoutGrid.
See also:
- RenderSliverLayoutGrid, which uses this class during its RenderSliverLayoutGrid.performLayout method.
- Annotations
Constructors
- SliverLayoutGeometry({required double scrollOffset, required double crossAxisOffset, required double? mainAxisExtent, required double crossAxisExtent, required int railCount, required int railLeadingOffset, required int startRailIndex})
-
Creates an object that describes the placement of a child in a RenderSliverGrid.
const
Properties
- crossAxisExtent → double
-
The extent of the child in the non-scrolling axis.
final
- crossAxisOffset → double
-
The offset of the child in the non-scrolling axis.
final
- endRailIndex → int
-
no setter
- hashCode → int
-
The hash code for this object.
no setterinherited
- mainAxisExtent → double?
-
The extent of the child in the scrolling axis.
final
- railCount → int
-
The number of cells occupied in the cross axis.
final
- railLeadingOffset → int
-
The number of rails between the first available position and the cell.
final
- railStride → int
-
no setter
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- scrollOffset → double
-
The scroll offset of the leading edge of the child relative to the leading
edge of the parent.
final
- startRailIndex → int
-
final
- trailingScrollOffset → double?
-
The scroll offset of the trailing edge of the child relative to the
leading edge of the parent.
no setter
Methods
-
copyWith(
{double? scrollOffset, double? crossAxisOffset, double? mainAxisExtent, double? crossAxisExtent, int? crossAxisCellCount, int? startRailIndex, int? railLeadingOffset}) → SliverLayoutGeometry -
getBoxConstraints(
SliverConstraints constraints) → BoxConstraints - Returns a tight BoxConstraints that forces the child to have the required size.
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
override
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited