kmpdfkit_demo/lib/widgets/viewer/pdfdisplaysettings/cpdf_themes_widget.dart

///
///  Copyright © 2014-2023 PDF Technologies, Inc. All Rights Reserved.
///
///  THIS SOURCE CODE AND ANY ACCOMPANYING DOCUMENTATION ARE PROTECTED BY INTERNATIONAL COPYRIGHT LAW
///  AND MAY NOT BE RESOLD OR REDISTRIBUTED. USAGE IS BOUND TO THE ComPDFKit LICENSE AGREEMENT.
///  UNAUTHORIZED REPRODUCTION OR DISTRIBUTION IS SUBJECT TO CIVIL AND CRIMINAL PENALTIES.
///  This notice may not be removed from this file.

import 'package:compdfkit_flutter/core/cpdf_view_ctrl.dart';
import 'package:compdfkit_flutter/theme/colors.dart';
import 'package:flutter/material.dart';

import '../../../common/util/Strings.dart';
import '../../common/radio/cpdf_radio_group_data.dart';
import '../../common/radio/cpdf_radio_list_group.dart';
import '../../common/radio/cpdf_radio_list_tile.dart';
import '../../common/switch/cpdf_switch_list_tile.dart';

class CPDFThemesWidget extends StatefulWidget {
  final CPDFViewCtrl ctrl;

  const CPDFThemesWidget({Key? key, required this.ctrl}) : super(key: key);

  @override
  State<CPDFThemesWidget> createState() => _CPDFPageThemesWidgetState();
}

class _CPDFPageThemesWidgetState extends State<CPDFThemesWidget> {
  final themes = [
    CPDFRadioGroupData(CPDFColors.themesLight.value,
        'assets/images/ic_themes_light.png', Strings.Light),
    CPDFRadioGroupData(CPDFColors.themesDark.value,
        'assets/images/ic_themes_dark.png', Strings.Dark),
    CPDFRadioGroupData(CPDFColors.themesSepia.value,
        'assets/images/ic_themes_sepia.png', Strings.Sepia),
    CPDFRadioGroupData(CPDFColors.themesReseda.value,
        'assets/images/ic_themes_reseda.png', Strings.Reseda),
  ];

  int _theme = CPDFColors.themesLight.value;

  @override
  void initState() {
    super.initState();
    _initDisplaySettings();
  }

  void _initDisplaySettings() async {
    CPDFViewCtrl ctrl = widget.ctrl;
    ctrl.getReadBackgroundColor().then((value) {
      setState(() {
        _theme = value.value;
      });
    });
  }

  @override
  Widget build(BuildContext context) {
    var sepia = themes.firstWhere((element) {
      return element.checkId == CPDFColors.themesSepia.value;
    });
    if (Theme.of(context).brightness == Brightness.dark) {
      sepia.leadingIcon = 'assets/images/ic_themes_sepia_dark.png';
    }
    var iconColor =
        Theme.of(context).brightness == Brightness.dark ? Colors.white : null;
    return Column(
      children: [
        _title(context, Strings.Themes),
        Column(
            children: themes.map((e) {
          return CPDFRadioListTile(
            iconColor:
                e.checkId != CPDFColors.themesSepia.value ? iconColor : null,
            leadingImageIcon: e.leadingIcon,
            leadingPackage: 'compdfkit_flutter',
            titleText: e.title,
            checked: e.checkId == _theme,
            onPressed: () {
              setState(() {
                _theme = e.checkId;
                widget.ctrl.setReadBackgroundColor(Color(e.checkId));
              });
            },
          );
        }).toList()),
      ],
    );
  }

  Widget _title(BuildContext context, String title) {
    return Container(
      alignment: Alignment.centerLeft,
      height: 28,
      padding: const EdgeInsets.symmetric(horizontal: 16),
      color: Theme.of(context).colorScheme.secondaryContainer,
      child: Text(
        title,
        style: Theme.of(context).textTheme.labelMedium,
      ),
    );
  }
}