117 lines
4.1 KiB
Dart
117 lines
4.1 KiB
Dart
import 'dart:typed_data';
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import 'package:flutter/material.dart';
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import 'package:printing/printing.dart';
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import '../models/invoice_models.dart';
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import '../services/pdf_generator.dart';
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class InvoicePdfPreviewPage extends StatelessWidget {
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final Invoice invoice;
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final bool allowFormalIssue;
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final bool isUnlocked;
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final bool isLocked;
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final Future<bool> Function()? onFormalIssue;
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final bool showShare;
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final bool showEmail;
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final bool showPrint;
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const InvoicePdfPreviewPage({
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Key? key,
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required this.invoice,
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this.allowFormalIssue = true,
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this.isUnlocked = false,
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this.isLocked = false,
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this.onFormalIssue,
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this.showShare = true,
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this.showEmail = true,
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this.showPrint = true,
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}) : super(key: key);
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Future<Uint8List> _buildPdfBytes() async {
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final doc = await buildInvoiceDocument(invoice);
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return Uint8List.fromList(await doc.save());
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}
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@override
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Widget build(BuildContext context) {
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final isDraft = invoice.isDraft;
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return Scaffold(
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appBar: AppBar(title: const Text("PDFプレビュー")),
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body: Column(
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children: [
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Expanded(
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child: PdfPreview(
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build: (format) async => await _buildPdfBytes(),
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allowPrinting: false,
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allowSharing: false,
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canChangePageFormat: false,
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canChangeOrientation: false,
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canDebug: false,
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actions: const [],
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),
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),
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SafeArea(
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top: false,
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child: Padding(
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padding: const EdgeInsets.fromLTRB(12, 8, 12, 16),
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child: Row(
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children: [
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Expanded(
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child: ElevatedButton.icon(
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onPressed: (allowFormalIssue && isDraft && isUnlocked && !isLocked && onFormalIssue != null)
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? () async {
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final ok = await onFormalIssue!();
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if (ok && context.mounted) Navigator.pop(context, true);
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}
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: null,
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icon: const Icon(Icons.check_circle_outline),
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label: const Text("正式発行"),
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style: ElevatedButton.styleFrom(backgroundColor: Colors.orange, foregroundColor: Colors.white),
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),
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),
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const SizedBox(width: 8),
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Expanded(
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child: ElevatedButton.icon(
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onPressed: showShare
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? () async {
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final bytes = await _buildPdfBytes();
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await Printing.sharePdf(bytes: bytes, filename: 'invoice.pdf');
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}
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: null,
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icon: const Icon(Icons.share),
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label: const Text("共有"),
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),
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),
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const SizedBox(width: 8),
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Expanded(
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child: ElevatedButton.icon(
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onPressed: showEmail
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? () async {
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final bytes = await _buildPdfBytes();
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await Printing.sharePdf(bytes: bytes, filename: 'invoice.pdf', subject: '請求書送付');
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}
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: null,
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icon: const Icon(Icons.mail_outline),
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label: const SizedBox.shrink(),
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),
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),
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const SizedBox(width: 8),
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Expanded(
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child: ElevatedButton.icon(
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onPressed: showPrint
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? () async {
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await Printing.layoutPdf(onLayout: (format) async => await _buildPdfBytes());
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}
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: null,
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icon: const Icon(Icons.print),
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label: const SizedBox.shrink(),
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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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);
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}
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}
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