firka/flutter
3
0
Fork 1
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Mention the point of BlendMode.plus and advise on using it. (flutter/engine#44189)

Browse Source
This commit is contained in:
Ian Hickson
2023-07-31 15:32:17 -07:00
committed by GitHub
parent 1b46ad1000
commit ddb2a2b8b3
1 changed files with 6 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
engine/src/flutter/lib/ui/painting.dart
View File

@@ -544,6 +544,12 @@ enum BlendMode {
///
/// This corresponds to the "Source plus Destination" Porter-Duff operator.
///
/// This is the right blend mode for cross-fading between two images. Consider
/// two images A and B, and an interpolation time variable _t_ (from 0.0 to
/// 1.0). To cross fade between them, A should be drawn with opacity 1.0 - _t_
/// into a new layer using [BlendMode.srcOver], and B should be drawn on top
/// of it, at opacity _t_, into the same layer, using [BlendMode.plus].
///
/// ![](https://flutter.github.io/assets-for-api-docs/assets/dart-ui/blend_mode_plus.png)
plus,