Controls the layout of tiles in a grid.
Given the current constraints on the grid, a SliverGridDelegate computes the layout for the tiles in the grid. The tiles can be placed arbitrarily, but it is more efficient to place tiles in roughly in order by scroll offset because grids reify a contiguous sequence of children.
- SliverGridDelegateWithFixedCrossAxisCount, which creates a layout with a fixed number of tiles in the cross axis.
- SliverGridDelegateWithMaxCrossAxisExtent, which creates a layout with tiles that have a maximum cross-axis extent.
- GridView, which uses this delegate to control the layout of its tiles.
- SliverGrid, which uses this delegate to control the layout of its tiles.
- RenderSliverGrid, which uses this delegate to control the layout of its tiles.
Abstract const constructor. This constructor enables subclasses to provide
const constructors so that they can be used in const expressions.
SliverConstraints constraints ) → SliverGridLayout
- Returns information about the size and position of the tiles in the grid.
covariant SliverGridDelegate oldDelegate ) → bool
- Override this method to return true when the children need to be laid out. [...]
Invocation invocation ) → dynamic
Invoked when a non-existent method or property is accessed. [...]
) → String
Returns a string representation of this object.