libmonet 2.0.0-dev.18

Algorithms and utilities that power the Material Design 3 (M3) color system, including choosing theme colors from images and creating tones of colors; all in a new color space.

2.0.0

• Bumped minimum SDK version to Dart 3.12.

• Ported from upstream Material Color Utilities:

  • Added CMF Scheme in 2026 spec. (19ad665)
  • Refactor DynamicScheme to accept a list of source colors. (4578d0a)
  • Updated background for on-fixed colors in ColorSpec2026. (91da30d)
  • Adjust chroma calculation in ColorSpec2025 for yellow hues at tone 99. (1a34bd2)
  • Added support for energy color generation via the new EnergyColors utility. Implementation is experimental as it comes from an unreleased version of the upstream library.

• Renamed android_dynamic_colors library to android_color_utilities.

• Fixed an upstream issue of AndroidDynamicColors.clockSecond and AndroidDynamicColors.weatherTemp having a medium contrast of 70, when it should've been 7.

• Ported from upstream Android source code:

  • Added surfaceEffect0, surfaceEffect1, surfaceEffect2, surfaceEffect3,surfaceEffect0Fallback color roles representing translucent surfaces with background effects to AndroidDynamicColors.
  • Added SchemeClock and SchemeClockVibrant to the android_color_utilities library.
  • Added Cam16.getInt and Cam16.getIntInViewingConditions to the material_color_utilities library.

• Massively refactored DynamicScheme (including deviations from upstream):

  • Removed custom palette key colors support from DynamicScheme.
  • Replaced sourceColorHct with sourceColor of type TonalPaletteSourceColor.
  • Renamed DynamicScheme.fromPalettesOrKeyColors to DynamicScheme.withDefaults.
  • All DynamicScheme.withDefaults and Scheme* constructor parameters are now optional (isDark defaults to false as per md.sys.color token defaults).
  • Implemented complex fallback logic for isDark, platform and specVersion.
  • Added DynamicScheme.raw for creating potentially logically impossible scheme configurations.

• Aligning the library with Dart best practices:

  • Renamed TemperatureCache.getComplement to TemperatureCache.complement and made it a getter.
  • Changed Score.score positional parameters to be named instead.
  • Made Hct immutable to avoid issues with value equality in collections: removed hue, chroma and tone setters and added a new copyWith method.
  • Added year property to SpecVersion and implemented Comparable<SpecVersion> in order to make spec versions orderable.

• Added a default libmonet library which exports all members from the other libraries.

• Added generated example schemes in CSS and Figma formats.

• Refactored internal file structure (breaks source code imports).

• Other minor changes.

1.2.0

• Inlined more utility functions.

• Removed MathUtils.signum in favor of num.sign.

• Addressed linter feedback.

• Code style updates.

• Upgraded dependencies.

1.1.2

• Made sure Flutter-specific directories get ignored when publishing the package.

1.1.1

• Deprecated MathUtils.signum in favor of num.sign.

1.1.0

• Added caching to MaterialDynamicColors which prevents the class from being const-constructable.

• Removed redundant libraries which were partials of material_color_utilities.

• Publicly exposed ColorSpec2021 and ColorSpec2025 classes.

• Introduced a new library android_dynamic_colors which contains a AndroidDynamicColors class which is a port of com.android.systemui.monet.CustomDynamicColors.

• Fixed incorrect Dart class delegation by replacing it with plain inheritance in ColorSpec2025.

• Refactored the library internally to improve code style and readability.

• Updated analysis_options.yaml to ensure correct lint rules are being used during development.

• Updated .gitignore to match other workspace packages.

1.0.0

• Initial version.