kmpdfkit_demo/lib/widgets/cpdf_readerview_page.dart

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

import '../core/cpdf_view_ctrl.dart';
import '../cpdf_configuration.dart';
import '../theme/themes.dart';
import 'common/pdfview/cpdf_page_indicator.dart';
import 'common/pdfview/cpdf_page_slider_bar.dart';
import 'common/pdfview/cpdf_reader_widget.dart';
import 'common/slider/cpdf_slider_theme.dart';
import 'common/views/cpdf_main_tool_bar.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.

class CPDFReaderViewPage extends StatefulWidget {
  final bool isDark;

  const CPDFReaderViewPage({super.key, this.isDark = false});

  @override
  State<CPDFReaderViewPage> createState() => _CPDFReaderViewPageState();
}

class _CPDFReaderViewPageState extends State<CPDFReaderViewPage>
    with SingleTickerProviderStateMixin {
  CPDFViewCtrl? ctrl;

  bool _isNormalMode = true;

  late final AnimationController _controller;

  @override
  void initState() {
    super.initState();
    _controller = AnimationController(
        vsync: this, duration: const Duration(milliseconds: 300));
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: comPDFKitLightTheme,
      darkTheme: comPDFKitDarkTheme,
      themeMode: widget.isDark ? ThemeMode.dark : ThemeMode.light,
      home: Scaffold(
          primary: _isNormalMode,
          appBar: PreferredSize(
              preferredSize: const Size(0, 0),
              child: Builder(builder: (context) {
                return AppBar(
                  systemOverlayStyle: SystemUiOverlayStyle(
                      systemNavigationBarColor:
                          Theme.of(context).scaffoldBackgroundColor),
                  backgroundColor:
                      widget.isDark ? null : CPDFColors.backgroundLight,
                  elevation: 0,
                );
              })),
          body: Column(
            children: [
              if (ctrl != null) ...{
                CPDFMainToolbar(
                    visible: _isNormalMode,
                    controller: _controller,
                    ctrl: ctrl!,
                    isDark: widget.isDark)
              },
              Expanded(
                  child: Stack(
                alignment: Alignment.center,
                children: [
                  CPDFReaderWidget(
                    documentPath: "",
                    configuration: CPDFConfiguration(),
                    onComPDFKitWidgetCreate: (ctrl) {
                      setState(() {
                        this.ctrl = ctrl;
                        setReaderViewCallback();
                      });
                    },
                  ),
                  if (ctrl != null) ...{
                    Positioned(
                        bottom: 20,
                        child: AnimatedOpacity(
                          opacity: _isNormalMode ? 1.0 : 0.0,
                          duration: const Duration(milliseconds: 300),
                          curve: Curves.fastOutSlowIn,
                          child: CPDFPageIndicator(
                            ctrl: ctrl!,
                            isDark: widget.isDark,
                          ),
                        )),
                    Positioned(
                        right: 0,
                        top: 0,
                        bottom: 0,
                        child: AnimatedOpacity(
                          opacity: _isNormalMode ? 1.0 : 0.0,
                          duration: const Duration(milliseconds: 300),
                          curve: Curves.fastOutSlowIn,
                          child: CPDFPageNavigationSliderBar(
                              ctrl: ctrl!,
                              position: CPDFSliderIndicatorPosition.right),
                        )),
                  },
                ],
              ))
            ],
          )),
    );
  }

  void setReaderViewCallback() {
    ctrl!.onTapMainDocArea.stream.listen((event) {
      setState(() {
        _isNormalMode = !_isNormalMode;
      });
    });
  }
}