DecoderBufferCallback typedef Null safety

DecoderBufferCallback = Future<Codec> Function(ImmutableBuffer buffer, {bool allowUpscaling, int? cacheHeight, int? cacheWidth})

Performs the decode process for use in ImageProvider.loadBuffer.

This callback allows decoupling of the cacheWidth, cacheHeight, and allowUpscaling parameters from implementations of ImageProvider that do not expose them.

See also:

  • ResizeImage, which uses this to override the cacheWidth, cacheHeight, and allowUpscaling parameters.

Implementation

typedef DecoderBufferCallback = Future<ui.Codec> Function(ui.ImmutableBuffer buffer, {int? cacheWidth, int? cacheHeight, bool allowUpscaling});