Version 5.0.0-dev.2

v5.0.0-dev.2 - April 4, 2022

BREAKING

• Completed in version 4.0.0 planned, for version 5.0.0, removal of
  deprecated property surfaceStyle, including all its implementing classes,
  enums and helpers:

  • Removed property: surfaceStyle in FlexColorScheme.light.
  • Removed property: surfaceStyle in FlexColorScheme.dark.
  • Removed: enum FlexSurface, that surfaceStyle where.
  • Removed: factory FlexSchemeSurfaceColors.from that was used to create
    surface using the FlexSurface. The factory FlexSchemeSurfaceColors.blend
    replaced in version 4.0.0 already when using surfaceMode and blendLevel.
  • Removed tests and modified tests needing to consider above removals.

• Deprecated property useSubThemes. This property has no function after
  4.2.0 stable and 5.0.0-dev.1. FlexColorScheme opinionated component sub-themes
  are now created by adding a default constructor FlexSubThemesData() or one with
  some custom property values set, to subThemesData. This creates sub-themes
  using the FlexColorScheme opinionated sub-themes. Removing this property makes the
  API more consistent. It now follows the same design that is used for keyColors
  with FlexKeyColors and tones with FlexTones.
  Setting the property useSubThemes will not cause an error, it just has no effect.
  You can safely remove it. The property useSubThemes will be removed in release 6.0.0.

• The property navigationBarIsStyled in FlexSubThemesData was removed in
  v5.0.0-dev.1 as no longer needed. It is now kind of back with a new broader
  replacement called FlexSubThemesData.useFlutterDefaults.
  The in dev.1 version tested API-style to
  set various SchemeColor properties to null, to get SDK default for them was not
  nice. The FlexSubThemesData should default to its own preferred
  and recommended harmonized defaults when not defined. It is better to offer a
  toggle that can be set, to when possible/offer an opt-out from some bigger style
  differences from SDK defaults. This can be useful if one wants to create
  custom component themes and wish to start from less opinionated ones.
  The new useFlutterDefaults is false by default, and the sub-themes undefined
  null values result in its own harmonized and recommended settings. By setting
  it to true a bit messier and un-harmonized Flutter default are back. Currently,
  this impacts different styles and colors on BottomNavigationBar, NavigationBar,
  and NavigationRail. See API docs for details regarding
  defaults with this flag on and off.

• The FlexSubThemesData property popupMenuRadius and the radius in
  corresponding static sub-theme helper FlexSubThemes.popupMenuTheme,
  now defaults to 4.
  In versions before v5.0.0-dev.2 it defaulted to 10. The M3 spec for it
  was not available when it was chosen originally. It was assumed to have
  higher border radius like rest of designs. However, the spec has it
  defined here now, and it
  is 4. Since border radius default values are stated in FlexColorScheme
  sub-theme design goals to follow the M3 design specs, it was updated to
  match the spec. A bit higher rounding, may actually fit better with
  the very round M3 design, try 8 or 10. It is very simple to change bach with
  the API.

FIX

• Pub.dev analysis does not like document references to deprecated Flutter
  properties. Changed the primaryVariant and secondaryVariant references
  in document comments to primaryVariant and secondaryVariant. Nor does it
  like when you use tests to deprecated Flutter SDK members, removed them too,
  they were not needed either after some redesign of a few tests.

• Fixed. When using sub-themes and selecting a ColorScheme based color, as
  color for the AppBar, instead of using abbBarStyle in light and dark
  factories, the appBarOpacity was not applied to the selected color. The
  priority of effective AppBar color was also revised to follow the norm,
  which from lowest to highest is:

  • abbBarStyle in light/dark factories and ThemeData extensions, which
    selects the used color from active scheme or colors, in the same
    factories or extensions.
  • appBarBackgroundSchemeColor in FlexSubThemesData when used.
  • appBarBackground in FlexColorScheme.

CHANGE

• Changed the priority in FlexColorScheme when using direct input color
  properties, colorScheme input and using key color seeded ColorScheme
  generation. The new order is that input colorScheme is in this rare use case
  always overridden by the seed generate ColorScheme. This allows us
  to use a colorScheme as input to seed generation, where this color
  scheme could already have been externally seeded generated, but that we want
  to modify by using custom FlexTones or surface blends in FleColorScheme.
  The direct properties overrides the seeded color scheme as before, unless it
  is primary, secondary, tertiary or their container colors. In that case
  the keyColors, "keep" property determines if those colors are kept or not.

• The FlexSubThemesData property inputDecorationRadius was deprecated and
  renamed to inputDecoratorRadius, to harmonize the other
  InputDecoration property names in FlexSubThemesData.
  The old name will be removed in release 6.0.0.

• Deprecated and renamed navigationBarHighlightSchemeColor to
  navigationBarIndicatorSchemeColor in FlexSubThemesData, to
  harmonize the naming standard. Likewise, the parameter highlightSchemeColor
  ìn FlexSubThemes.navigationBarTheme was deprecated and replaced by
  indicatorSchemeColor. The old names will be removed in release 6.0.0.

• In 5.0.0-dev.1, the renamed properties were deprecated and broken with 4.2.0.
  They are still deprecated, but now fallback via the old properties. They
  are no longer breaking. This concerns FlexSubThemesData properties:

  • bottomNavigationBarSchemeColor -> bottomNavigationBarSelectedLabelSchemeColor
  • navigationBarTextSchemeColor -> navigationBarSelectedLabelSchemeColor
  • navigationBarMutedUnselectedText -> navigationBarMutedUnselectedLabel
  • navigationBarIconSchemeColor -> navigationBarSelectedIconSchemeColor

  And FlexSubThemes.navigationBarTheme properties:

  • textSchemeColor -> selectedLabelSchemeColor
  • unselectedTextSchemeColor -> unselectedLabelSchemeColor
  • iconSchemeColor -> selectedIconSchemeColor
  • mutedUnselectedText -> mutedUnselectedLabel

  And FlexSubThemes.bottomNavigationBarTheme properties:

  • baseSchemeColor -> selectedLabelSchemeColor

  The old property names will be removed in release 6.0.0.

NEW

• Added SchemeColor based theming of SnackBar background color via
  snackBarBackgroundSchemeColor in FlexSubThemesData and support for it
  in FlexSubThemes.

• Changed the color values for FlexColor.materialLightSecondaryContainer and
  FlexColor.materialLightSecondaryContainerHc. These color properties
  do not have any specification in Material 2 spec. Updated the colors values
  that had been made up for dev.1 release to better match the design intent
  of those colors for the new Material 3 ColorScheme.

• Added inputDecoratorUnfocusedBorderIsColored to FlexSubThemesData and
  support for it in FlexSubThemes via unfocusedBorderIsColored. Previously
  an unfocused or hovered border/underline always had a hint of selected
  base color. Setting this to false, leaves it at the grey defaults used by
  Flutter defaults.

• Added navigationBarIndicatorOpacity and navigationRailIndicatorOpacity
  to FlexSubThemesData, to expose their already existing properties in
  corresponding sub-themes used by FlexColorScheme.

DEMO APPS

• Themes Playground improvements:
  • Added a new single panel "Page" view. The previous large masonry grid view
    is still available. Both views can be used and switch to based on what
    is appropriate when using different media sizes.
  • The switches to keep main input colors for primary, secondary, tertiary
    and their containers, where separated so that their state and code
    generation for light and dark theme mode are separate. This makes them
    more useful for actual theme setup. Earlier you had to separate them by
    editing the generated code.
  • Added display of SnackBar style to the Themed Material panel.
  • Added display of more ListTile types.
  • Added ColorScheme based color selection theming of SnackBar background color.
  • Added CodeView as a panel of its own. It is now possible to view the
    changes to generated code as settings are changed. In the
    advanced view where one can keep it open and close other panels, except one
    being operated in. In page view it is shown as last page, however if
    the media is large enough, it is shown side-by-side with controls on current
    page. This is a really handy view for studying what each control does in
    the generated code.
  • Added missing code gen for button border radius.
  • Fixed broken code gen for dark mode blend level.
  • Decoupled all bundled theming controls in the app.
  • Added individual override controls for border radius to all components.
  • Added option to swap or not swap computed dark mode main and container color.
  • Added indicator opacity controls to NavigationBar and NavigationRail.
  • Reduced amount of pre-set defaults in the app, so it starts with simpler setup code.
  • Changed the code gen style for dark mode when using from light mode computed dark theme.
  • Changed the code gen, so it does not add any code when using API default values.
  • Changed the ThemeService to use generic types.

TESTS

• Finalized test updates. Now 1684 te...

Version 5.0.0-dev.1

v5.0.0-dev.1 - March 14, 2022

Version 5 is a big refactor with deprecation of previous variant based
color names in favor of container ones that were added to updated M3
based ColorScheme in Flutter 2.10.0. The same additions and changes are now
also introduced in FlexColorScheme. Despite being a very big release, with
many new features, actual breaking changes are very few and mostly concerns
in version 4 deprecated members and of course requiring minimum Flutter
2.10.0 to work.

The WIP updates now includes the version of the key color seeded M3 ColorScheme
usage intended for the final design. The feature supports seeding by not only
using a single primary key color, but also using separate key colors for
secondary and tertiary colors. The Flutter SDK ColorScheme.fromSeed only
support using a single color as seed. The primary, secondary and tertiary
color are used as key color seeds, when seeding is used, and by default all
three color are used as key for their respective tonal palette used by
the generated ColorScheme. Using secondary and teritary colors can each
optionally be turned OFF. If both are, the result is same as when using
ColorScheme.fromSeed, with the primary color as seed key color.

When using a key seed color generated ColorScheme, it may sometimes, e.g. for
branding purposes, be useful to lock a certain color in the resulting
ColorScheme to the actual key color value used for primary, secondary
and tertiary. FlexColorScheme includes scheme appropriate colors for
each of these color properties, as well
their containers. You can for each property define which ones you want to keep
as defined by these input colors, in the seed generated ColorScheme. You
can of course use this feature with custom input colors as well.

The bundled example 5, the Themes Playground is now fully up to date with all
the new features. Its updated code generation still
needs results verification.

There are also now in Flutter master channel more actual
M3 impacts and ThemeData color property deprecations commits landed in Flutter
master channel that I reviewed and prepared for in advance when possible.

Much work on tests, and readme documentation updates remain, but API docs are
up-to-date. And this book long change log should help. There are only a few
breaking changes, and most of them are rarely used properties, so migration
should be relatively easy, despite the long list of changes and new features.

BREAKING

• Requires at least Flutter stable 2.10.0.This release uses new M3 ColorScheme
  properties that are not included before Flutter version 2.10.0, as well
  as the ThemeData flag useMaterial3.

• Removed parameter surfaceStyle from FlexThemeData
  extensions FlexThemeData.light and FlexThemeData.dark that uses
  in version 4.2.0 already deprecated property surfaceStyle in FlexColorScheme
  class. The same deprecated property surfaceStyle in FlexColorScheme class
  is still available in 5.0.0-dev.1. In the stable release 5.0.0 it might
  be removed as well. They were all scheduled for deprecation in version 5.0.0,
  but keeping it around a bit longer in the main class in 5.0.0-dev releases
  to prolong backwards API compatibility during development. Maybe I will keep
  it in the release too, many tests need to be rewritten when they are removed.

• The enum SchemeColor has new values and past values are in a
  new order. The order was changed to accommodate new color values and to
  keep them in the same order as their corresponding color properties
  in M3 ColorScheme. The change of order is potentially breaking, but unlikely
  to break anything in major ways, other than possibly local storage of selected
  enum values. In the bundled samples you might for example see wrong color
  selections loaded from local storage, just reset or select correct value
  to fix it.

• To get more harmonized setup on opt-in sub themes for NavigationBar,
  BottomNavigationBar and NaivgationRail a few properties in
  FlexSubThemesData and FlexSubThemes had to be modified and broken.
  Impact is estimated to be low for most users.

  The following properties were renamed in FlexSubThemesData:

  • navigationBarTextSchemeColor -> navigationBarSelectedLabelSchemeColor
  • navigationBarMutedUnselectedText -> navigationBarMutedUnselectedLabel
  • navigationBarIconSchemeColor -> navigationBarSelectedIconSchemeColor
  • bottomNavigationBarSchemeColor -> bottomNavigationBarSelectedLabelSchemeColor

  In FlexThemeData the property navigationBarIsStyled was removed. It is
  no longer needed. The same end result it enabled can be achieved by
  by setting all NavigationBar related properties in FlexSubThemesData that
  have a none null default value to null.

  The following parameters were renamed in FlexSubThemes.navigationBarTheme:

  • textSchemeColor -> selectedLabelSchemeColor
  • unselectedTextSchemeColor -> unselectedLabelSchemeColor
  • iconSchemeColor -> selectedIconSchemeColor
  • mutedUnselectedText -> mutedUnselectedLabel

  The following parameter wa renamed in FlexSubThemes.bottomNavigationBarTheme:

  • baseSchemeColor -> selectedLabelSchemeColor

NEW

• Added useMaterial3 to all theme constructors and factories. This is
  the same flag as in ThemeData, it does not have any major impact on
  default themed widgets in Flutter 2.10.x. Opting in on opinionated
  sub-themes, will however as before give opinionated component sub-themes that
  result in Material 3 like styles. Similar look will become default widget
  design in later Flutter SDK versions when using the flag useMaterial3 is
  set to true.

• Added new properties onPrimaryContainer, onSecondaryContainer,
  tertiary, tertiaryContainer, onTertiary and onTertiaryContainer to
  the un-namedFlexColorScheme constructor and factories
  FlexColorScheme.light and FlexColorScheme.dark, as well as to extension
  FlexThemeData to extensions FlexThemeData.light and FlexThemeData.dark
  on ThemeData.

• In FlexColor added new color properties for all color values to cover the
  new "Container" color properties in Flutter 2.10 new M3 ColorScheme.
  For every built-in FlexColor, there are now also these new color properties:

  • primaryContainer
  • secondaryContainer
  • tertiary
  • tertiaryContainer

  The previous color values maps as follows:

  • tertiary = old secondaryVariant color value, that is deprecated
    for each color value.
  • Old primaryVariant, is just deprecated for each color value.

  The "variant" colors are still available as deprecated properties, and will
  remain available until version 6.0.0. The old color properties and their values
  still work as inputs, and they produce same equivalent ColorScheme results
  as before. This is done by the values still being assigned as fallback value
  in custom schemes so that new:

  • primaryContainer, if not assigned, falls back via old primaryVariant.
  • secondaryContainer, if not assigned, falls back via old secondaryVariant.

  When it comes to the new built-in scheme designs, the color used on past:

  • secondaryVariant was a reasonable fit for new M3 tertiary color property
    and was used as its value.
  • The new properties secondaryContainer and
    tertiaryContainer, had to get new built-in color values that fit with
    the M3 design intent for those color properties. This while considering the
    value secondary already had, and the value tertiary got by being
    assigned the color value of past secondaryVariant.
  • The new color property primaryContainer also needed a new color value. The
    past primaryVariant is not the correct design fit for how the color
    value is intended to be used in M3 Color design.
  • In many cases it was possible to make nice color schemes, by reshuffling
    some existing color values and using colors from light scheme, in container
    properties in dark scheme and vice versa. Sometimes new better tuned
    color values were used. In all events all Container color properties
    are new features in this release, so they are considered "new" even
    if their color value might have been recycled from previous properties
    in some cases. Some Container color values may still be fine-tuned
    before final 5.0.0 release, but it is unlikely.

• In class FlexSchemeColor added new color properties
  primaryContainer and secondaryContainer they replace
  deprecated properties primaryVariantand secondaryVariant. The old
  properties still work and are
  used as fallback to the new ones when the new ones are not provided.
  The previous properties are still available as deprecated, and will remain
  available until version 6.0.0, or until they are removed from the Flutter
  stable channel, whichever comes first. The properties for built-in schemes
  were assigned to their new corresponding FlexColorvalues.

• In class FlexSchemeColor added new color definitions from FlexColor
  for FlexSchemeColor.tertiary and FlexSchemeColor.tertiaryContainer.

• In class FlexSchemeColor the FlexSchemeColor.secondaryContainer
  and FlexSchemeColor.tertiaryContainer should be brighter versions of their
  none container parent light mode and darker in dark mode. They receive
  such color values via new corresponding FlexColorvalues.

• In factory FlexSchemeColor.from added optional and nullable parameter
  brightness. If not assigned, the factory works as before, producing a
  complete FlexSchemeColor from just one or more color proper...

Version 4.2.0

v4.2.0 - January 24, 2022

• New: Updated required Dart SDK to minimum 2.15 that Flutter 2.8.0 uses.
  To use this release at least Flutter 2.8.0 is required.

• New: Added support for opinionated sub-theme for the new Material 3 based
  NavigationBar. Flutter version 2.8.0 is the first stable version that
  includes the new Material 3 design based NavigationBar.

• Deprecated: The property surfaceStyle has been deprecated. In
  version 4.0.0 it was already recommended to use, the then introduced more
  powerful surface branding properties surfaceMode and blendLevel instead.
  The surfaceStyle property is still available and works as before, but you
  now get a deprecation warning if it is used. The property and all its related features
  will be completely removed in version 5.0.

• New: Custom FlexColorScheme based themes can now also be defined by
  alternatively passing in a ColorScheme object to the colorScheme
  property in default the constructor, as well as in FlexColorScheme.light and
  FlexColorScheme.dark factories. When used it overrides the scheme and
  colors properties in the factories. Same color property in any constructor
  that exist as direct property in the constructors, still have the highest
  priority and will also override corresponding color properties in passed in
  colorScheme. The capability to make custom FlexColorScheme based themes from
  standard Flutter color schemes is useful if you already have a predefined
  elaborate ColorScheme definition. You can now use it directly and still
  use FlexColorScheme for its surface color branding and easy sub-theming.
  This capability will also be very useful when Material 3 based ColorScheme
  in Flutter SDK arrives in the stable channel. With Material 3, color schemes
  may be created using new Material 3 design based color tools, e.g. from
  seed color(s) or using dynamic colors extracted from system wallpaper colors.
  With this feature it will then be able to feed those colors directly into
  FlexColorScheme, and use them as colors to create your ThemeData.

• Changed: All properties in all FlexColorScheme constructors are now
  optional. The change is none breaking, and uses Material 2 based
  design guide example theme light and dark as defaults for undefined values.

• New: Added a ColorScheme color selection option to selected opinionated
  sub-themes configuration class FlexSubThemesData. The sub-themes that
  support changing their ColorScheme based
  used theme color selection, have one or more properties called
  nnnSchemeColor where nnn describes the color feature that can be set
  to an alternative ColorScheme based color and not just its pre-defined
  ColorScheme based color property.
  The color selector is a SchemeColor enum property value that is used to
  select the enum value that corresponds to same named color
  property value in theme.colorScheme. This SchemeColor color quick
  selection option has been added to:

  • Theming TextField via FlexSubThemes.inputDecorationTheme to select a
    base color for the border and fill color.
  • TabBar sub-theming to select its indicator color, when you want it to be a
    different color than the color of the TabBar icon and text, which are
    controlled via FlexTabBarStyle in the FlexColorScheme.tabBarStyle
    property as before. It gives you an easy option to override the indicator
    color with any of the theme's colorScheme colors.
  • To BottomNavigationBar via FlexSubThemes.bottomNavigationBar to set the
    preferred color of the icon and label text in the Material 2 based
    BottomNavigationBar, as well as used container background color.
  • NavigationBar in FlexSubThemes.navigationBarTheme to set the
    preferred ColorScheme color of the text, icon in the Material 3 based
    NavigationBar, as well as the pill shaped highlight color separately that
    surrounds the selected icon and its container background color.
  • ChipThemeData from FlexSubThemes.chipTheme to change the used
    ColorScheme based base color of Chips.

• The SchemeColor properties for the above sub-themes have a default selection
  that results in same ColorScheme color values being used as they had
  before. The additional configuration options are none breaking. The enum
  properties to modify the used ColorScheme color can be defined in the
  configuration class FlexSubThemesData using its new properties:

  • inputDecoratorSchemeColor
  • chipSchemeColor
  • tabBarIndicatorSchemeColor
  • bottomNavigationBarUsedColor
  • bottomNavigationBarSchemeColor
  • bottomNavigationBarBackgroundSchemeColor
  • navigationBarIconSchemeColor
  • navigationBarTextSchemeColor
  • navigationBarHighlightSchemeColor
  • navigationBarBackgroundSchemeColor

• Usage examples of the above new configuration possibilities have been added to
  the default example, the so-called developers hot reload playground.

• The ColorScheme color selection in SchemeColor includes all colors in
  ColorScheme supported by Flutter 2.8. You may want to avoid using the
  primaryVariant and secondaryVariant colors if you want to avoid later
  migrations. These variant colors are being deprecated in Flutter SDK,
  see #93427.

• A later FlexColorScheme version will add support for the new Material 3
  colors in ColorScheme when they land in the stable channel.

• This quick selection of ColorScheme based colors as none standard themed
  colors of widget sub-themes, may be extended to a few more sub-themes in
  future versions. At least if it is seen as a practical and quick way to
  customize widget sub-theme colors within the constraints of colors in
  the theme.colorScheme.

• As before you can still apply your own total custom sub-themes to the
  ThemeData created with FlexColorScheme by using copyWith.
  FlexColorScheme is a way to easily make fancy and color wise consistent and
  balanced ThemeData objects using convenience shortcut properties and
  methods. It does not prevent you from further modifying and tuning the
  produced ThemeData with standard Flutter SDK features.

• Removed: The uses-material-design: true line from library
  pubspec.yaml file was removed. It is not needed since Material icon
  features are not used by this package.

• Example 5 - Themes Playground

  • Fixed onColor for a few colors in the ThemeData color presentation boxes
    for cases where it might differ from colorScheme onColors. This could happen
    when disabling FlexColorScheme.
  • Fixed index on _AppBarSettings card.
  • Changed the feature that animate hides not available options based on selections
    to a version that disables them and resets their state while disabled.
    Plus a few controls are hidden but take up same space.
    Hiding the controls caused the panels to change size, often causing relayout
    of the masonry grid layout. This was confusing UX, as entire panels might
    move into new places. While the UI hide animations were cool, this keeps
    the panels in same place in the grid, which is less confusing to use.
    Panels can still be closed and it of course causes relayout of the grid too,
    but in that use case it is expected.
  • Changed ColorScheme indicator boxes to use the themed border radius.
  • Added a button to copy theme, and improved the explanations to make the
    functionality more obvious and accessible. Previously only the entire
    ListTile was the button, this UI with no button was not so clear. Now
    there is also a button that says COPY. Clicking on the ListTile still
    works as well.
  • Add and updated app icon resources used by all the example apps.
  • Update to new breaking version of StaggeredGridview 0.6.0. It no longer
    requires previously used bug work around(s) for a window resize issue that
    had existed since 2019. For more info on this solved issue, see this
    article.
  • Added most new features in version 4.2.0 to the Themes Playground app and
    its theme code generation.

• Example theme - Copy Playground Theme

  • Added a new simple template example, that is handy for trying copy-pasted
    theme setup code, generated by the Themes Playground example 5.

• Documentation: Reviewed and corrected many API docs. The API docs are
  very thorough and complete. They usually cover any question you might have and
  more. Added a brief "API Intro and Guide" chapter to the readme.

• Tests: Added tests to cover the new features, now total 1123 tests.

Version 4.1.1

[4.1.1] - November 20, 2021

• Documentation: Fixed a broken link in the readme that pub.dev analyser found.
• This release was previously not published on GitHub, because it is basically the same release as 4.1.0, but with a readme.md fix needed for pub.dev, since it caused a score reduction on pub.dev.

Version 4.1.0

[4.1.0] - November 20, 2021

• Fix: The defaultRadius in FlexSubThemesData now defaults to null
  so all sub-themes border radius will default to M3 default border
  radius per widget. The const default value it had was a remnant from early
  dev phase when widgets all defaulted to single shared radius and not M3
  defaults per widget type. If you explicitly passed in null, you did also in
  previous version get the M3 defaults. Older tests did that, now they expect
  same result when no value is assigned, as it should have been.

• Examples: Updated and tuned the examples. Example 5 "Themes Playground"
  now includes capability to define custom color schemes starting from built-in ones.
  It can also generate the FlexColorScheme setup code needed for any defined
  viewed theme setup. You can copy/paste a theme's Flutter Dart code,
  from the Themes Playground to your app and use it as its theme. This is a very
  quick and convenient way to try a theme you made and see in the Themes
  Playground in your own app.

• Opt in opinionated sub themes minor style changes:

  • Added missing themed background color for SnackBarThemeData when
    using opt in opinionated sub themes.
  • Tuned the colored text theme on the sub themes that is applied when
    using the optional colored text themes. The text styles now better match
    the regular none colored style,
    and they are a bit more subtle. Text style caption got a bit
    of opacity. M2 designed widgets like ListTile, depend on it for
    making more muted subtitles by default for ListTile via the heading level
    opacity on caption text style. The opacity on it is lower though, to
    retain a bit more contrast on blended surfaces, while still adhering to
    the style intent.

    Minor details on the opinionated sub themes may still be tuned and
    changed slightly as a part of improving them and their appeal. For the
    text theme coloring future version may expose parameter(s) that can be
    used to adjust the color tint effect on text theme when colored
    text theme is enabled.

• Major updates to readme doc, and typo corrections.

• Tests:

  • Modified tests to catch the fixed defaultRadius issue.
  • Added more tests, now total 1069 tests.

Version 4.0.0-example.5

[4.0.0-example.5] - November 18, 2021

• Package wise this is the same version as 4.0.0, but the examples were updated in this release. Example 5 got custom scheme feature and capability to get the code for the theme. Also testing the CI/CD build and deploy script with this release.

Version 4.0.0

[4.0.0] - November 13, 2021

• The new V4 docs are still a bit lacking and will be improved in docs
  updates later.

• The breaking case is a minor difference in produced style for true
  black mode. Version 4.0.0 is still fully API compatible with version 3.
  Version 4.0.0 does however contain so many new
  features, that it in itself warrants a new major release bump.

• Breaking: In dark mode, the darkIsTrueBlack now makes surface color
  8% darker instead of 6%. This change was needed to support overlay color
  in dark mode when using darkIsTrueBlack when using the new surfaceMode
  property. For more information see Flutter SDK
  issue 90353.

• Fix/Breaking: From the color scheme English descriptions the sentence
  end "." was removed from all description strings. If and when you want one,
  you can add it as needed.

• New: Added a more flexible and powerful alpha blending feature for
  surface and background colors. The new properties in the FlexColorScheme
  factories light and dark are surfaceMode, of type enum FlexSurfaceMode
  and integer blendLevel. Consider using them instead of previous
  surfaceStyle.
  The surface color blend style surfaceStyle is still default, and not yet
  deprecated, but may be so in later versions. It is not really needed anymore,
  but there was no major reason to break things by removing it either.

• New: Major new feature; easy sub-theming of Flutter SDK UI widgets.

  • You can opt in on nice looking opinionated widget sub-themes by setting
    FlexColorScheme.useSubThemes to true, it is false by default.
  • The default settings for the sub-theme is inspired by
    Material 3 design (M3) It mimics it to large extent
    when using default value sub-theme values and settings. The varying corner
    radius is different per widget type. The new TextTheme Typography is also
    included. All parts cannot be made to look exactly like M3 in Flutter when using
    Material 2 design (M2), but many parts
    can, and where possible the defaults try follow those values. You can of
    course override the default.
  • You can tweak these sub themes with a number of parameters
    defined in the FlexSubThemesData class, passed to
    FlexColorScheme.subThemesData.
  • The FlexSubThemesData class provides parameters for easy adjustment
    of corner radius in Widgets that use ShapeBorder or decorations, that
    support changing the Widget's corner radius. With the sub themes enabled, you
    can easily create a theme with a consistent corner radius on built-in
    Flutter SDK UI widgets.
  • The widget sub-themes also harmonize a few other styles, e.g. ToggleButtons
    to match the standard buttons regarding size and design as far as possible.
  • In case you still use the old deprecated buttons, they also get
    ButtonThemeData that as far as possible match the same style.
  • Via the sub themes it is by default opted-in to also use a bit Material You
    like coloring on the text styles. This can also be opted out of, even if
    otherwise opting in on sub-themes, it is on by default when opting in on
    sub themes.

• New: Added FlexThemeData static extension on ThemeData.

  • FlexColorScheme Themes can now also be created with the new syntax
    FlexThemeData.light and FlexThemeData.dark, instead of using
    FlexColorScheme.light().toTheme and FlexColorScheme.dark().toTheme.
  • The toTheme method is still available and works as before. It will not
    be deprecated. It is needed when making elaborate custom sub themes beyond
    what is offered when using FlexColorScheme based opt-in sub themes. When
    you make custom sub themes yourself, you often need access to
    the ColorScheme that is defined in current FlexColorScheme() instance.
    You can get it with FlexColorScheme().toScheme. Then use this
    this standard ColorScheme or any of its colors, in your custom sub theme
    definitions, that you then add with copyWith to your FlexColorScheme based
    theme, like FlexColorScheme().toTheme.copyWith(..."your sub themes and other ThemeData over-rides here").

• New: Added textTheme and primaryTextTheme properties to
  FlexColorScheme to enable easy setup of custom TextThemes, without the
  need to add a custom TextTheme via a copyWith, plus merge with the
  default text theme.

• New: Added FlexColorScheme.dialogBackground as a background surface
  color that can be controlled and themed separately.

• New: Added appBarOpacity to FlexColorScheme.light() and dark().
  With it, you can apply themed opacity to the AppBar background color to
  the selected FlexAppBarStyle it is using.

• New: On the FlexColorScheme factories light and dark, exposed
  the Color properties primary, primaryVariant, secondary,
  sedondaryVariant, appBarBackground, dialogBackground and error.
  They all default to null, but if provided they can be used as override values
  to factory behaviors defined by scheme, colors, appBarStyle,
  surfaceMode and surfaceStyle that
  otherwise via the factories define the colors for these properties. If a value
  for one of the new direct color properties is used with the factory, it always
  has precedence over other properties that assign or compute colors for it.

• New: Exposed boolean property applyElevationOverlayColor. It has the same
  function as the same property in ThemeData. It applies a semi-transparent
  overlay color on Material surfaces to indicate elevation for dark themes.
  In FlexColorScheme it defaults to true. In Flutter ThemeData.from it
  also default to true, but in ThemeData it defaults to false.
  The property is just available for convenience, so you can avoid a copyWith
  if you wish to turn it off. It is not necessarily needed or even desired when
  using strong alpha blends on surfaces in dark mode, to use an elevation
  overlay color.

• New: All FlexSchemeData objects in FlexColor are exposed as static
  const objects, making them easy to pick and reuse as const objects
  individually in custom color scheme lists, or as input to the colors
  property. Previously only the individual color value definitions were exposed.

• New: Added convenience extension .blendAlpha() on Color
  in FlexColorExtensions.

• New: The FlexThemeModeSwitch got a bool property hasTitle, if set
  to false it removes the title entirely.

• New: The FlexThemeModeSwitch got a buttonOrder property using enum
  FlexThemeModeButtonOrder that you can use to define the order of its
  light, system and dark theme mode buttons, in all possible combinations.

• New: Added edgeToEdge support to
  FlexColorScheme.themedSystemNavigationBar. This brings the previously
  experimental support for transparent system navigation bar in Android
  into the supported fold in FlexColorScheme. Its functionality
  requires min Android SDK level 29, but other than that it works without
  Android setup shenanigans. No added APIs, the API for it already existed
  in previous version of FlexColorScheme, using it did however require
  special Android build configuration setup, this is no longer required.

• Change: The FlexColor.schemesList is now a const for improved
  efficiency.

• New color schemes: Added four new built-in color schemes.
  Total number of color schemes is now 36 matched light and dark pairs.

  • Blue whale - Blue whale, jungle green and outrageous tango orange.
    Use enum value FlexScheme.blueWhale for easy access to it.
    This theme is final and selected for inclusion as a new one.
  • San Juan blue - San Juan blue and pink salmon theme.
    Use enum value FlexScheme.sanJuanBlue for easy access to it.
  • Rosewood - Rosewood red, with horses neck and driftwood theme.
    Use enum value FlexScheme.rosewood for easy access to it.
  • Blumine - Blumine, easter blue and saffron mango theme.
    Use enum value FlexScheme.blumineBlue for easy access to it.

• Documentation:

  • The new main example is a complete quick start guide that doubles as
    "developers" hot reload based playground template. It has comments
    explaining what is going on.
    If you skip reading the readme docs and tutorial, the example may help
    to kick-start using FlexColorScheme and all its features. It shows most
    of the features in last tutorial example 5, but without any interactive UI.
    You are the UI and can edit prop values and use hot-reload to see changes.
  • All examples now use the new FlexThemeData extension syntax to create the
    ThemeData and surfaceMode to define the alpha blended surfaces.
  • Examples 2 to 5 also use the in Flutter 2.5 new skeleton architecture with
    a ChangeNotifier based controller, AnimatedBuilder to listen to it and
    an abstract service to get and persist the theme settings, with a concrete
    in-memory implementation, plus the implementations to persist the theme.
    • Examples 2 to 4 use the Hive implementation.
    • Example 5 uses the SharedPreferences implementation

• Tests:

  • Added tests for the new features, total 1066 tests,
  • Coverage 99%, will improve them more later.

Version 4.0.0-dev.1

[4.0.0-dev.1] - November 13, 2021

• The breaking case refer to a minor difference in produced style for true
  black mode. Version 4.0.0 is still fully API compatible with version 3.
  Major version was bumped due to the small change in produced output in some
  rare usage options. Version 4.0.0 does however contain so many new
  features, that it in itself warrants a new major release bump.

• Breaking: In dark mode, the darkIsTrueBlack now makes surface color
  8% darker instead of 6%. This change was needed to support overlay color
  in dark mode when using darkIsTrueBlack when using the new surfaceMode
  property. For more information see Flutter SDK
  issue 90353.

• Fix/Breaking: From the color scheme English descriptions the sentence
  end "." was removed from all description strings. If and when you want one,
  you can add it as needed.

• New: Added a more flexible and powerful alpha blending feature for
  surface and background colors. The new properties in the FlexColorScheme
  factories light and dark are surfaceMode, of type enum FlexSurfaceMode
  and integer blendLevel. Consider using them instead of previous
  surfaceStyle.
  The surface color blend style surfaceStyle is still default, and not yet
  deprecated, but may be so in later versions. It is not really needed anymore,
  but there was no major reason to break things by removing it either.

• New: Major new feature; easy sub-theming of Flutter SDK UI widgets.

  • You can opt in on nice looking opinionated widget sub-themes by setting
    FlexColorScheme.useSubThemes to true, it is false by default.
  • The default settings for the sub-theme is inspired by
    Material 3 design (M3) It mimics it to large extent
    when using default value sub-theme values and settings. The varying corner
    radius is different per widget type. The new TextTheme Typography is also
    included. All parts cannot be made to look exactly like M3 in Flutter when using
    Material 2 design (M2), but many parts
    can, and where possible the defaults try follow those values. You can of
    course override the default.
  • You can tweak these sub themes with a number of parameters
    defined in the FlexSubThemesData class, passed to
    FlexColorScheme.subThemesData.
  • The FlexSubThemesData class provides parameters for easy adjustment
    of corner radius in Widgets that use ShapeBorder or decorations, that
    support changing the Widget's corner radius. With the sub themes enabled, you
    can easily create a theme with a consistent corner radius on built-in
    Flutter SDK UI widgets.
  • The widget sub-themes also harmonize a few other styles, e.g. ToggleButtons
    to match the standard buttons regarding size and design as far as possible.
  • In case you still use the old deprecated buttons, they also get
    ButtonThemeData that as far as possible match the same style.
  • Via the sub themes it is by default opted-in to also use a bit Material You
    like coloring on the text styles. This can also be opted out of, even if
    otherwise opting in on sub-themes, it is on by default when opting in on
    sub themes.

• New: Added FlexThemeData static extension on ThemeData.

  • FlexColorScheme Themes can now also be created with the new syntax
    FlexThemeData.light and FlexThemeData.dark, instead of using
    FlexColorScheme.light().toTheme and FlexColorScheme.dark().toTheme.
  • The toTheme method is still available and works as before. It will not
    be deprecated. It is needed when making elaborate custom sub themes beyond
    what is offered when using FlexColorScheme based opt-in sub themes. When
    you make custom sub themes yourself, you often need access to
    the ColorScheme that is defined in current FlexColorScheme() instance.
    You can get it with FlexColorScheme().toScheme. Then use this
    this standard ColorScheme or any of its colors, in your custom sub theme
    definitions, that you then add with copyWith to your FlexColorScheme based
    theme, like FlexColorScheme().toTheme.copyWith(..."your sub themes and other ThemeData over-rides here").

• New: Added textTheme and primaryTextTheme properties to
  FlexColorScheme to enable easy setup of custom TextThemes, without the
  need to add a custom TextTheme via a copyWith, plus merge with the
  default text theme.

• New: Added FlexColorScheme.dialogBackground as a background surface
  color that can be controlled and themed separately.

• New: Added appBarOpacity to FlexColorScheme.light() and dark().
  With it, you can apply themed opacity to the AppBar background color to
  the selected FlexAppBarStyle it is using.

• New: On the FlexColorScheme factories light and dark, exposed
  the Color properties primary, primaryVariant, secondary,
  sedondaryVariant, appBarBackground, dialogBackground and error.
  They all default to null, but if provided they can be used as override values
  to factory behaviors defined by scheme, colors, appBarStyle,
  surfaceMode and surfaceStyle that
  otherwise via the factories define the colors for these properties. If a value
  for one of the new direct color properties is used with the factory, it always
  has precedence over other properties that assign or compute colors for it.

• New: Exposed boolean property applyElevationOverlayColor. It has the same
  function as the same property in ThemeData. It applies a semi-transparent
  overlay color on Material surfaces to indicate elevation for dark themes.
  In FlexColorScheme it defaults to true. In Flutter ThemeData.from it
  also default to true, but in ThemeData it defaults to false.
  The property is just available for convenience, so you can avoid a copyWith
  if you wish to turn it off. It is not necessarily needed or even desired when
  using strong alpha blends on surfaces in dark mode, to use an elevation
  overlay color.

• New: All FlexSchemeData objects in FlexColor are exposed as static
  const objects, making them easy to pick and reuse as const objects
  individually in custom color scheme lists, or as input to the colors
  property. Previously only the individual color value definitions were exposed.

• New: Added convenience extension .blendAlpha() on Color
  in FlexColorExtensions.

• New: The FlexThemeModeSwitch got a bool property hasTitle, if set
  to false it removes the title entirely.

• New: The FlexThemeModeSwitch got a buttonOrder property using enum
  FlexThemeModeButtonOrder that you can use to define the order of its
  light, system and dark theme mode buttons, in all possible combinations.

• New: Added edgeToEdge support to
  FlexColorScheme.themedSystemNavigationBar. This brings the previously
  experimental support for transparent system navigation bar in Android
  into the supported fold in FlexColorScheme. Its functionality
  requires min Android SDK level 29, but other than that it works without
  Android setup shenanigans. No added APIs, the API for it already existed
  in previous version of FlexColorScheme, using it did however require
  special Android build configuration setup, this is no longer required.

• Change: The FlexColor.schemesList is now a const for improved
  efficiency.

• New color schemes: Added four new built-in color schemes.
  Total number of color schemes is now 36 matched light and dark pairs.

  • Blue whale - Blue whale, jungle green and outrageous tango orange.
    Use enum value FlexScheme.blueWhale for easy access to it.
    This theme is final and selected for inclusion as a new one.
  • San Juan blue - San Juan blue and pink salmon theme.
    Use enum value FlexScheme.sanJuanBlue for easy access to it.
  • Rosewood - Rosewood red, with horses neck and driftwood theme.
    Use enum value FlexScheme.rosewood for easy access to it.
  • Blumine - Blumine, easter blue and saffron mango theme.
    Use enum value FlexScheme.blumineBlue for easy access to it.

• Documentation:

  • The new main example is a complete quick start guide that doubles as
    "developers" hot reload based playground template. It has comments
    explaining what is going on.
    If you skip reading the readme docs and tutorial, the example may help
    to kick-start using FlexColorScheme and all its features. It shows most
    of the features in last tutorial example 5, but without any interactive UI.
    You are the UI and can edit prop values and use hot-reload to see changes.
  • All examples now use the new FlexThemeData extension syntax to create the
    ThemeData and surfaceMode to define the alpha blended surfaces.
  • Examples 2 to 5 also use the in Flutter 2.5 new skeleton architecture with
    a ChangeNotifier based controller, AnimatedBuilder to listen to it and
    an abstract service to get and persist the theme settings, with a concrete
    in-memory implementation, plus the implementations to persist the theme.
    • Examples 2 to 4 use the Hive implementation.
    • Example 5 uses the SharedPreferences implementation

• TODO Documentation:

  • Some older documentation that is not relevant was removed, like older APIs
    no longer described in read me, only in API docs.
  • Almost all screenshots will need to be updated. (sigh)
  • Typo review and corrections.

• TODO Tests:

  • Added tests for the new features, total 1066 tests,
  • Coverage is 98%, a few more tests to be added before release.

Version 3.0.1

[3.0.1] - July 1, 2021

• Fix: The internal order of swapping primary and secondary colors and reducing
  used colors in static function FlexSchemeColor.effective(FlexSchemeColor colors, int usedColors, {bool swapColors = false}) matters for the intended result when
  used together in the same call. The function now swaps primary and secondary colors,
  before reducing the used colors.
• Tests: Added tests for above fix that captures the issue and fails
  in version 3.0.0. Total 741 tests, coverage 99.75%.
• Documentation and typo fixes.

Version 3.0.0

[3.0.0] - June 25, 2021

• Breaking: The color accentColor is being deprecated in Flutter SDK ThemeData starting
  from version v2.3.0-0.1.pre.
  Usage of accentColor in FlexColorScheme is removed to support this
  transition. The property is deprecated in FlexColorScheme, but is still present. Its
  usage does however no longer have impact on produced themes, this is a potential breaking change.
  The probability that you might have used it as a property in your
  FlexColorScheme based theme is low. It was set before to primary color
  in FlexColorScheme, as a way to make the highlight color of outlines and underlines on
  text field boxes primary colored in dark theme mode, and not secondary/accent colored as they used
  to bve in Flutter's default dark theme mode. The old accentColor was
  not used for anything else in themes anymore when using FlexColorScheme.
  The property is now going away totally
  in Flutter SDK. The default ThemeData in Flutter SDK in dark mode now creates a
  theme for outline and underline indicators on input fields that are based on primary color,
  just like FlexColorScheme does and already did before. Flutter SDK no longer uses
  accentColor for it. The resulting default dark mode style on text fields thus now remain
  unchanged in FlexColorScheme even with this definition removed. If you
  had used accentColor in FlexColorScheme as a short-cut to define a different text field
  outline or underline highlight color in dark theme mode than primary color, then you will need to
  recreate it via text field decoration theming.

• New: The FlexColorScheme.dark and FlexColorScheme.light factories have a new
  property called swapColors. If true, this will swap primary and primaryVariant
  colors with their secondary counter-parts.

  This flag can be set to true if you want to make a theme where your primary and secondary
  colors are swapped compared to their definition. It is useful if you want to quickly
  swap primary and secondary colors when using the pre-defined color
  schemes or with computed dark schemes from light schemes. It doubles the
  variation possibilities of themes based on the pre-defined color schemes.

  If you are explicitly defining all you light or dark scheme colors, you can of course define
  them in desired order. This feature will still swap whatever
  colors you defined for primary and secondary when set to true. You can thus also
  use this feature as an easy end-user modifiable theme option, if you like
  to offer the capability to toggle the primary and secondary theme colors the
  other way around.

• New: The static function FlexSchemeColor.effective(FlexSchemeColor colors, int usedColors, {bool swapColors = false}) is used to implement the above
  swapColors feature. It also exposes the logic behind the FlexColorScheme
  dark and light theme usedColors property. This static method is helpful if
  you need to compute effective built-in theme colors externally to FlexColorScheme
  to present the active theme, based on these settings. This is used by example 5
  to change the colors on the theme mode switch when the swap color settings
  is toggled. The usedColors property is not shown in any bundled
  example, but it can be used the same way.

• New color schemes: Added four new built-in color schemes.

  • Bahama and trinidad - Bahama blue and trinidad orange colored theme.
    Use enum value FlexScheme.bahamaBlue for easy access to it.
  • Mallard and valencia - Mallard green and Valencia pink colored theme.
    Use enum value FlexScheme.mallardGreen for easy access to it.
  • Espresso and crema - Espresso dark brown and crema colored theme.
    Use enum value FlexScheme.espresso for easy access to it.
  • Outer space stage - Outer space dark blue-grey and stage red theme.
    Use enum value FlexScheme.outerSpace for easy access to it.

  Inspired by MaterialYou at GoogleIO 2021, I recently hooked up FlexColorScheme
  with an algorithm that extracts prominent colors from images. Then fed these
  colors to FlexColorScheme to make themes from them. The above new color schemes in
  release 3.0.0 came from these image based theme experiments. You can see examples
  of FlexColorScheme making color schemes and themes from images in my Tweets about it.
  This was a first quick test
  of the idea, later I added some more features to it, here and here. This
  quick test shows that FlexColorScheme is very versatile.

• Tests: Added tests for the new features and removed test related to
  accentColor. Total 736 tests, coverage 99.76%.