palette_generator_plus 1.0.0

Extract prominent colors from images. A maintained palette_generator successor.

1.0.0

Initial release of palette_generator_plus, the community-maintained successor to the discontinued palette_generator package (see flutter/flutter#162963).

Migrating from palette_generator

Migration is a single import-line change:

- import 'package:palette_generator/palette_generator.dart';
+ import 'package:palette_generator_plus/palette_generator_plus.dart';

The entire original public API (PaletteGenerator, PaletteColor, PaletteTarget, PaletteFilter, EncodedImage, avoidRedBlackWhitePaletteFilter) is preserved with identical names and signatures.

Added

• Isolate-based extraction (runInIsolate, on by default) with a transparent main-thread fallback on the web.
• A pluggable Quantizer interface with CelebiQuantizer (default, backed by material_color_utilities) and LegacyQuantizer (the original median-cut, for byte-identical legacy output).
• A Material 3 bridge: PaletteGenerator.seedColor and PaletteGenerator.toColorScheme().
• WCAG accessibility helpers: contrastRatio, wcagTextColor, WcagLevel, and PaletteColor.accessibleOnColor.

Changed

• Colors are now extracted with the CelebiQuantizer by default. Pass quantizer: const LegacyQuantizer() to any from* constructor for output that is byte-identical to the original palette_generator.