import 'package:flutter/material.dart';

/// Created by @Haoyi on 4/15/21


class HorizontalDivider extends StatelessWidget {
  /// Creates a material design vertical divider.
  ///
  /// The [height], [thickness], [indent], and [endIndent] must be null or
  /// non-negative.
  const HorizontalDivider({
    Key? key,
    this.height,
    this.thickness,
    this.indent,
    this.endIndent,
    this.color,
    this.bgColor,
  })  : assert(height == null || height >= 0.0),
        assert(thickness == null || thickness >= 0.0),
        assert(indent == null || indent >= 0.0),
        assert(endIndent == null || endIndent >= 0.0),
        super(key: key);

  /// The divider's width.
  ///
  /// The divider itself is always drawn as a vertical line that is centered
  /// within the width specified by this value.
  ///
  /// If this is null, then the [DividerThemeData.space] is used. If that is
  /// also null, then this defaults to 16.0.
  final double? height;

  /// The thickness of the line drawn within the divider.
  ///
  /// A divider with a [thickness] of 0.0 is always drawn as a line with a
  /// width of exactly one device pixel.
  ///
  /// If this is null, then the [DividerThemeData.thickness] is used which
  /// defaults to 0.0.
  final double? thickness;

  /// The amount of empty space on top of the divider.
  ///
  /// If this is null, then the [DividerThemeData.indent] is used. If that is
  /// also null, then this defaults to 0.0.
  final double? indent;

  /// The amount of empty space under the divider.
  ///
  /// If this is null, then the [DividerThemeData.endIndent] is used. If that is
  /// also null, then this defaults to 0.0.
  final double? endIndent;

  /// The color to use when painting the line.
  ///
  /// If this is null, then the [DividerThemeData.color] is used. If that is
  /// also null, then [ThemeData.dividerColor] is used.
  ///
  /// {@tool snippet}
  ///
  /// ```dart
  /// Divider(
  ///   color: Colors.deepOrange,
  /// )
  /// ```
  /// {@end-tool}
  final Color? color;

  final Color? bgColor;

  @override
  Widget build(BuildContext context) {
    final DividerThemeData dividerTheme = DividerTheme.of(context);
    final double height = this.height ?? dividerTheme.space ?? 16.0;
    final double thickness = this.thickness ?? dividerTheme.thickness ?? 0.0;
    final double indent = this.indent ?? dividerTheme.indent ?? 0.0;
    final double endIndent = this.endIndent ?? dividerTheme.endIndent ?? 0.0;
    final Color bgColor = this.bgColor ?? Colors.transparent;

    return SizedBox(
      width: double.infinity,
      height: height,
      child: Center(
        child: Container(
          height: thickness,
          padding: EdgeInsetsDirectional.only(start: indent, end: endIndent),
          color: bgColor,
          child: Container(
            height: thickness,
            decoration: BoxDecoration(
              border: Border(
                top: Divider.createBorderSide(context, color: color, width: thickness),
              ),
            ),
          ),
        ),
      ),
    );
  }
}