ScrollCacheExtent.viewport constructor

const ScrollCacheExtent.viewport(
  1. double value
)

Creates a cache extent as a multiplier of the viewport's main axis extent.

The main axis extent is the size of the viewport in its main axis. For example, for a vertically scrolling list, the main axis extent is the height of the viewport. If the viewport is 600 logical pixels tall, then ScrollCacheExtent.viewport(2.0) results in a cache extent of 1200 logical pixels.

Implementation

const factory ScrollCacheExtent.viewport(double value) = _ViewportScrollCacheExtent;