AnimatedContainer constructor

AnimatedContainer({
  1. Key? key,
  2. AlignmentGeometry? alignment,
  3. EdgeInsetsGeometry? padding,
  4. Color? color,
  5. Decoration? decoration,
  6. Decoration? foregroundDecoration,
  7. double? width,
  8. double? height,
  9. BoxConstraints? constraints,
  10. EdgeInsetsGeometry? margin,
  11. Matrix4? transform,
  12. AlignmentGeometry? transformAlignment,
  13. Widget? child,
  14. Clip clipBehavior = Clip.none,
  15. Curve curve = Curves.linear,
  16. required Duration duration,
  17. VoidCallback? onEnd,
})

Creates a container that animates its parameters implicitly.

Implementation

AnimatedContainer({
  super.key,
  this.alignment,
  this.padding,
  Color? color,
  Decoration? decoration,
  this.foregroundDecoration,
  double? width,
  double? height,
  BoxConstraints? constraints,
  this.margin,
  this.transform,
  this.transformAlignment,
  this.child,
  this.clipBehavior = Clip.none,
  super.curve,
  required super.duration,
  super.onEnd,
}) : assert(margin == null || margin.isNonNegative),
     assert(padding == null || padding.isNonNegative),
     assert(decoration == null || decoration.debugAssertIsValid()),
     assert(constraints == null || constraints.debugAssertIsValid()),
     assert(color == null || decoration == null,
       'Cannot provide both a color and a decoration\n'
       'The color argument is just a shorthand for "decoration: BoxDecoration(color: color)".',
     ),
     decoration = decoration ?? (color != null ? BoxDecoration(color: color) : null),
     constraints =
      (width != null || height != null)
        ? constraints?.tighten(width: width, height: height)
          ?? BoxConstraints.tightFor(width: width, height: height)
        : constraints;