ente/lib/ui/viewer/location/radius_picker_widget.dart

import "package:flutter/material.dart";
import "package:photos/core/constants.dart";
import "package:photos/states/add_location_state.dart";
import "package:photos/theme/colors.dart";
import "package:photos/theme/ente_theme.dart";

class CustomTrackShape extends RoundedRectSliderTrackShape {
  @override
  Rect getPreferredRect({
    required RenderBox parentBox,
    Offset offset = Offset.zero,
    required SliderThemeData sliderTheme,
    bool isEnabled = false,
    bool isDiscrete = false,
  }) {
    const trackHeight = 2.0;
    final trackWidth = parentBox.size.width;
    return Rect.fromLTWH(0, 0, trackWidth, trackHeight);
  }
}

class RadiusPickerWidget extends StatefulWidget {
  final ValueNotifier<int?> memoriesCountNotifier;
  const RadiusPickerWidget(this.memoriesCountNotifier, {super.key});

  @override
  State<RadiusPickerWidget> createState() => _RadiusPickerWidgetState();
}

class _RadiusPickerWidgetState extends State<RadiusPickerWidget> {
  double selectedIndex = defaultRadiusValueIndex.toDouble();
  @override
  Widget build(BuildContext context) {
    final textTheme = getEnteTextTheme(context);
    final colorScheme = getEnteColorScheme(context);
    return Row(
      children: [
        Container(
          height: 48,
          width: 48,
          decoration: BoxDecoration(
            color: colorScheme.fillFaint,
            borderRadius: const BorderRadius.all(Radius.circular(2)),
          ),
          padding: const EdgeInsets.all(4),
          child: Column(
            mainAxisSize: MainAxisSize.min,
            mainAxisAlignment: MainAxisAlignment.center,
            crossAxisAlignment: CrossAxisAlignment.center,
            children: [
              Expanded(
                flex: 6,
                child: Text(
                  _selectedRadius(context).toInt().toString(),
                  style: _selectedRadius(context) != 1200
                      ? textTheme.largeBold
                      : textTheme.bodyBold,
                  textAlign: TextAlign.center,
                ),
              ),
              Expanded(
                flex: 5,
                child: Text(
                  "km",
                  style: textTheme.miniMuted,
                ),
              ),
            ],
          ),
        ),
        const SizedBox(width: 4),
        Expanded(
          child: Padding(
            padding: const EdgeInsets.symmetric(horizontal: 8),
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              mainAxisSize: MainAxisSize.min,
              children: [
                Text("Radius", style: textTheme.body),
                const SizedBox(height: 10),
                SizedBox(
                  height: 12,
                  child: SliderTheme(
                    data: SliderThemeData(
                      overlayColor: Colors.transparent,
                      thumbColor: strokeSolidMutedLight,
                      activeTrackColor: strokeSolidMutedLight,
                      inactiveTrackColor: colorScheme.strokeFaint,
                      activeTickMarkColor: colorScheme.strokeMuted,
                      inactiveTickMarkColor: strokeSolidMutedLight,
                      trackShape: CustomTrackShape(),
                      thumbShape: const RoundSliderThumbShape(
                        enabledThumbRadius: 6,
                        pressedElevation: 0,
                        elevation: 0,
                      ),
                      tickMarkShape: const RoundSliderTickMarkShape(
                        tickMarkRadius: 1,
                      ),
                    ),
                    child: RepaintBoundary(
                      child: Slider(
                        value: selectedIndex,
                        onChanged: (value) {
                          setState(() {
                            selectedIndex = value;
                          });

                          InheritedLocationTagData.of(
                            context,
                          ).updateSelectedIndex(
                            value.toInt(),
                          );
                          widget.memoriesCountNotifier.value = null;
                        },
                        min: 0,
                        max: radiusValues.length - 1,
                        divisions: radiusValues.length - 1,
                      ),
                    ),
                  ),
                ),
              ],
            ),
          ),
        ),
      ],
    );
  }

  double _selectedRadius(BuildContext context) {
    return radiusValues[
        InheritedLocationTagData.of(context).selectedRadiusIndex];
  }
}