HatangChatTheme class - hatang_chat library

Constructors

HatangChatTheme({required Brightness brightness, required HatangPalette palette, required Color accent, required Color onAccent, String? fontFamily, double bubbleRadius = HatangRadius.lg, Color? mineBubble, Color? onMineBubble, Color? theirBubble, Color? onTheirBubble}): Creates a theme.
const
HatangChatTheme.dark({Color accent = const Color(0xFF38BDF8), String? fontFamily}): Dark theme with accent.
factory
HatangChatTheme.fromSite(SiteConfig? config, Brightness brightness, {String? fontFamily}): Theme from the site's accent colour for brightness.
factory
HatangChatTheme.light({Color accent = const Color(0xFF0EA5E9), String? fontFamily}): Light theme with accent (default: Hatang sky).
factory

accent → Color: Accent (site colour): send button, own bubbles, links.
final
accentText → Color: The accent as a text colour on the chat's backgrounds (quick replies, outlined buttons, links, prices): the site colour itself when it reads at WCAG AA (4.5:1) on the page, bubble and card backgrounds, otherwise the nearest darker (light theme) or lighter (dark theme) shade that does.
no setter
brightness → Brightness: Light or dark.
final
bubbleRadius → double: Bubble corner radius.
final
fontFamily → String?: Font family for every text (null = the host's).
final
hashCode → int: The hash code for this object.
no setterinherited
mine → Color: Resolved own bubble background.
no setter
mineBubble → Color?: Own bubble background (default: accent).
final
onAccent → Color: Text on accent, chosen by luminance.
final
onMine → Color: Resolved own bubble text.
no setter
onMineBubble → Color?: Own bubble text (default: onAccent).
final
onTheirBubble → Color?: Their bubble text (default: fg).
final
onTheirs → Color: Resolved their bubble text.
no setter
palette → HatangPalette: Base colours.
final
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
theirBubble → Color?: Their bubble background (default: raised surface).
final
theirs → Color: Resolved their bubble background.
no setter
type → Object: The extension's type.
no setterinherited

buttonText(BuildContext context, TextStyle base, {FontWeight weight = FontWeight.w600}) → TextStyle: Label style for a button's textStyle: Material buttons do not inherit the surrounding text style, so without the host's labelLarge the label would fall back to the platform font instead of the app's.
copyWith({Brightness? brightness, HatangPalette? palette, Color? accent, Color? onAccent, String? fontFamily, double? bubbleRadius, Color? mineBubble, Color? onMineBubble, Color? theirBubble, Color? onTheirBubble}) → HatangChatTheme: Creates a copy of this theme extension with the given fields replaced by the non-null parameter values.
override
lerp(covariant ThemeExtension<HatangChatTheme>? other, double t) → HatangChatTheme: Linearly interpolate with another ThemeExtension object.
override
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
text(TextStyle base, {Color? color}) → TextStyle: Base text style with fontFamily.
toString() → String: A string representation of this object.
inherited

contrastRatio(Color a, Color b) → double: WCAG 2 contrast ratio between two opaque colours (1 to 21).
of(BuildContext context) → HatangChatTheme: The theme to use inside context: the registered extension, else one derived from the ambient brightness.
onAccentFor(Color c) → Color: Near-black or white, whichever has the higher WCAG contrast on c (a mid blue such as #0ea5e9 gets dark text: white would be 2.8:1).
parseHexColor(String? hex) → Color?: Parses #rgb, #rrggbb or #rrggbbaa.
readableOn(Color c, List<Color> backgrounds, {double ratio = 4.5}) → Color: c moved towards black or white in small steps until it reaches ratio against every colour in backgrounds (opaque: blend a translucent tint over its base with Color.alphaBlend first).