AnnotationTheme class

Theme configuration for annotation visual appearance.

AnnotationTheme defines the visual styling of annotations in the flow editor, including colors for selection and highlight states, borders, and border radius.

The theme supports different visual states:

  • Normal state (default appearance - handled by annotation's buildWidget)
  • Selected state (when the annotation is selected)
  • Highlighted state (when being dragged over or hovered)

Example:

// Create a custom annotation theme
final customTheme = AnnotationTheme(
  selectionBorderColor: Colors.blue,
  selectionBackgroundColor: Colors.blue.withOpacity(0.1),
  highlightBorderColor: Colors.orange,
  highlightBackgroundColor: Colors.orange.withOpacity(0.1),
  borderWidth: 2.0,
  borderRadius: BorderRadius.circular(8.0),
);

// Or use a predefined theme
final lightTheme = AnnotationTheme.light;
final darkTheme = AnnotationTheme.dark;

Constructors

AnnotationTheme({required Color selectionBorderColor, required Color selectionBackgroundColor, required Color highlightBorderColor, required Color highlightBackgroundColor, required double borderWidth, double highlightBorderWidthDelta = 1.0, required BorderRadius borderRadius})
Creates an annotation theme with the specified visual properties.
const

Properties

borderRadius → BorderRadius
Border radius for the selection/highlight overlay.
final
borderWidth → double
Width of the selection border in logical pixels.
final
hashCode → int
The hash code for this object.
no setterinherited
highlightBackgroundColor → Color
Background overlay color when the annotation is highlighted.
final
highlightBorderColor → Color
Border color when the annotation is highlighted.
final
highlightBorderWidthDelta → double
Additional width added to the highlight border.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
selectionBackgroundColor → Color
Background overlay color when the annotation is selected.
final
selectionBorderColor → Color
Border color when the annotation is selected.
final

Methods

copyWith({Color? selectionBorderColor, Color? selectionBackgroundColor, Color? highlightBorderColor, Color? highlightBackgroundColor, double? borderWidth, double? highlightBorderWidthDelta, BorderRadius? borderRadius}) → AnnotationTheme
Creates a copy of this theme with the specified properties replaced.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited

Constants

dark → const AnnotationTheme
A predefined dark theme for annotations.
light → const AnnotationTheme
A predefined light theme for annotations.