121 lines
3.5 KiB
Dart
121 lines
3.5 KiB
Dart
import 'dart:async';
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import 'dart:io';
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import 'package:fcs/helpers/cache_mgr.dart';
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import 'package:fcs/helpers/theme.dart';
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import 'package:fcs/pages/main/util.dart';
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import 'package:fcs/pages/widgets/local_app_bar.dart';
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import 'package:fcs/pages/widgets/progress.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter_pdfview/flutter_pdfview.dart';
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import 'package:share/share.dart';
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class PDFScreen extends StatefulWidget {
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final String? title;
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final String? url;
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PDFScreen({Key? key, this.url, this.title}) : super(key: key);
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_PDFScreenState createState() => _PDFScreenState();
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}
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class _PDFScreenState extends State<PDFScreen> with WidgetsBindingObserver {
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final Completer<PDFViewController> _controller =
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Completer<PDFViewController>();
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int pages = 0;
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int currentPage = 0;
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bool isReady = false;
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String errorMessage = '';
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bool _isLoading = true;
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void initState() {
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super.initState();
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download();
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}
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File? file;
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Future<void> download() async {
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try {
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File f = await PdfCacheMgr.pdfs.getSingleFile(widget.url!);
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setState(() {
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file = f;
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});
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} catch (e) {
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showMsgDialog(context, "Error", e.toString());
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} finally {
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setState(() {
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_isLoading = false;
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});
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}
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}
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@override
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Widget build(BuildContext context) {
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return LocalProgress(
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inAsyncCall: _isLoading,
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child: Scaffold(
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appBar: LocalAppBar(
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backgroundColor: Colors.white,
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arrowColor: primaryColor,
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titleWidget: Text(widget.title ?? "",
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style: TextStyle(color: primaryColor, fontSize: 20)),
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actions: [
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IconButton(
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icon: Icon(
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Icons.share,
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color: primaryColor,
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),
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onPressed: _share,
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),
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],
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),
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body: Stack(
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children: <Widget>[
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_isLoading
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? Container()
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: PDFView(
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filePath: file?.path ?? "",
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enableSwipe: true,
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swipeHorizontal: true,
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autoSpacing: false,
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pageFling: true,
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pageSnap: true,
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defaultPage: currentPage,
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fitPolicy: FitPolicy.BOTH,
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preventLinkNavigation:
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false, // if set to true the link is handled in flutter
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onRender: (int? _pages) {
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print(('pages => $pages'));
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setState(() {
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pages = _pages!;
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isReady = true;
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});
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},
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onViewCreated: (PDFViewController pdfViewController) {
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_controller.complete(pdfViewController);
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},
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onLinkHandler: (String? uri) {
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print('goto uri: $uri');
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},
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onPageChanged: (int? page, int? total) {
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print('page change: $page/$total');
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setState(() {
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currentPage = page!;
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});
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},
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),
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],
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),
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),
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);
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}
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_share() async {
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final RenderBox box = context.findRenderObject() as RenderBox;
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await Share.shareFiles([file!.path],
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mimeTypes: ["application/pdf"],
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subject: "File",
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sharePositionOrigin: box.localToGlobal(Offset.zero) & box.size);
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}
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}
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