hash-wallet/lib/src/widgets/standard_slide_button_widget.dart

import 'package:cake_wallet/src/widgets/primary_button.dart';
import 'package:cake_wallet/themes/extensions/cake_text_theme.dart';
import 'package:cake_wallet/themes/extensions/filter_theme.dart';
import 'package:cake_wallet/themes/extensions/menu_theme.dart';
import 'package:cake_wallet/themes/extensions/sync_indicator_theme.dart';
import 'package:cake_wallet/themes/theme_base.dart';
import 'package:flutter/material.dart';

class StandardSlideButton extends StatefulWidget {
  const StandardSlideButton({
    Key? key,
    required this.onSlideComplete,
    this.buttonText = '',
    this.height = 48.0,
    required this.currentTheme,
    required this.accessibleNavigationModeButtonText,
  }) : super(key: key);

  final VoidCallback onSlideComplete;
  final String buttonText;
  final double height;
  final ThemeBase currentTheme;
  final String accessibleNavigationModeButtonText;

  @override
  _StandardSlideButtonState createState() => _StandardSlideButtonState();
}

class _StandardSlideButtonState extends State<StandardSlideButton> {
  double _dragPosition = 0.0;

  @override
  Widget build(BuildContext context) {
    final bool accessible = MediaQuery.of(context).accessibleNavigation;

    final tileBackgroundColor = widget.currentTheme.type == ThemeType.light
        ? Theme.of(context).extension<SyncIndicatorTheme>()!.syncedBackgroundColor
        : widget.currentTheme.type == ThemeType.oled
            ? Colors.black.withOpacity(0.5)
            : Theme.of(context).extension<FilterTheme>()!.buttonColor;

    return accessible
        ? PrimaryButton(
            text: widget.accessibleNavigationModeButtonText,
            color: Theme.of(context).primaryColor,
            textColor: Colors.white,
            onPressed: () => widget.onSlideComplete())
        : LayoutBuilder(builder: (context, constraints) {
            final double maxWidth = constraints.maxWidth;
            const double sideMargin = 4.0;
            final double effectiveMaxWidth = maxWidth - 2 * sideMargin;
            const double sliderWidth = 42.0;

            return Container(
              height: widget.height,
              decoration: BoxDecoration(
                  borderRadius: BorderRadius.circular(10), color: tileBackgroundColor),
              child: Stack(
                alignment: Alignment.centerLeft,
                children: [
                  Center(
                      child: Text(widget.buttonText,
                          style: TextStyle(
                              fontSize: 16,
                              fontFamily: 'Lato',
                              fontWeight: FontWeight.w600,
                              color: Theme.of(context).extension<CakeTextTheme>()!.titleColor))),
                  Positioned(
                    left: sideMargin + _dragPosition,
                    child: GestureDetector(
                      onHorizontalDragUpdate: (details) {
                        setState(() {
                          _dragPosition += details.delta.dx;
                          if (_dragPosition < 0) _dragPosition = 0;
                          if (_dragPosition > effectiveMaxWidth - sliderWidth) {
                            _dragPosition = effectiveMaxWidth - sliderWidth;
                          }
                        });
                      },
                      onHorizontalDragEnd: (details) {
                        if (_dragPosition >= effectiveMaxWidth - sliderWidth - 10) {
                          widget.onSlideComplete();
                        } else {
                          setState(() => _dragPosition = 0);
                        }
                      },
                      child: Container(
                        width: sliderWidth,
                        height: widget.height - 8,
                        decoration: BoxDecoration(
                          borderRadius: BorderRadius.circular(10),
                          color: Theme.of(context).extension<CakeTextTheme>()!.titleColor,
                        ),
                        alignment: Alignment.center,
                        child: Icon(Icons.arrow_forward,
                            color: widget.currentTheme.type == ThemeType.bright
                                ? Theme.of(context).extension<CakeMenuTheme>()!.backgroundColor
                                : Theme.of(context).extension<FilterTheme>()!.buttonColor),
                      ),
                    ),
                  )
                ],
              ),
            );
          });
  }
}