84 lines
2.6 KiB
Dart
84 lines
2.6 KiB
Dart
import 'dart:async';
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import 'dart:convert';
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import 'package:aves/model/entry.dart';
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import 'package:aves/model/entry_images.dart';
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import 'package:aves/services/image_file_service.dart';
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import 'package:aves/services/metadata_service.dart';
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import 'package:aves/widgets/common/action_mixins/feedback.dart';
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import 'package:flutter/widgets.dart';
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import 'package:pdf/widgets.dart' as pdf;
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import 'package:pedantic/pedantic.dart';
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import 'package:printing/printing.dart';
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class EntryPrinter with FeedbackMixin {
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final AvesEntry entry;
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EntryPrinter(this.entry);
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Future<void> print(BuildContext context) async {
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final documentName = entry.bestTitle ?? 'Aves';
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final doc = pdf.Document(title: documentName);
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final pages = await _buildPages(context);
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if (pages.isNotEmpty) {
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pages.forEach(doc.addPage); // Page
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unawaited(Printing.layoutPdf(
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onLayout: (format) => doc.save(),
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name: documentName,
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));
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}
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}
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Future<List<pdf.Page>> _buildPages(BuildContext context) async {
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final pages = <pdf.Page>[];
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void _addPdfPage(pdf.Widget pdfChild) {
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if (pdfChild == null) return;
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final displaySize = entry.displaySize;
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pages.add(pdf.Page(
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orientation: displaySize.height > displaySize.width ? pdf.PageOrientation.portrait : pdf.PageOrientation.landscape,
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build: (context) => pdf.FullPage(
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ignoreMargins: true,
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child: pdf.Center(
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child: pdfChild,
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),
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),
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));
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}
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if (entry.isMultipage) {
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final multiPageInfo = await MetadataService.getMultiPageInfo(entry);
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if (multiPageInfo.pageCount > 1) {
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final streamController = StreamController<AvesEntry>.broadcast();
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showOpReport<AvesEntry>(
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context: context,
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opStream: streamController.stream,
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itemCount: multiPageInfo.pageCount,
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);
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for (final page in multiPageInfo.pages) {
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final pageEntry = entry.getPageEntry(page);
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_addPdfPage(await _buildPageImage(pageEntry));
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streamController.sink.add(pageEntry);
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}
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await streamController.close();
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}
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}
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if (pages.isEmpty) {
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_addPdfPage(await _buildPageImage(entry));
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}
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return pages;
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}
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Future<pdf.Widget> _buildPageImage(AvesEntry entry) async {
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if (entry.isSvg) {
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final bytes = await ImageFileService.getSvg(entry.uri, entry.mimeType);
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if (bytes != null && bytes.isNotEmpty) {
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return pdf.SvgImage(svg: utf8.decode(bytes));
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}
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} else {
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return pdf.Image(await flutterImageProvider(entry.uriImage));
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}
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return null;
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}
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}
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