flutter/max_print_plus
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Tothemax Dev
2024-09-27 13:30:11 +07:00
commit 5419429426
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lib/print/network_printer_screen.dart Normal file
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import 'package:flutter/material.dart';
import 'package:drago_pos_printer/drago_pos_printer.dart';
import 'package:webcontent_converter/demo.dart';
import 'package:webcontent_converter/webcontent_converter.dart';
import '../service/service.dart';
class NetWorkPrinterScreen extends StatefulWidget {
@override
_NetWorkPrinterScreenState createState() => _NetWorkPrinterScreenState();
}
class _NetWorkPrinterScreenState extends State<NetWorkPrinterScreen> {
bool _isLoading = false;
List<NetWorkPrinter> _printers = [];
NetworkPrinterManager? _manager;
List<int> _data = [];
String _name = "default";
int paperWidth = 0;
int charPerLine = 0;
List<String> paperTypes = [];
bool showCustom = false;
@override
void initState() {
_scan();
paperWidth = PaperSizeWidth.mm80;
charPerLine = PaperSizeMaxPerLine.mm80;
paperTypes.add('58mm');
paperTypes.add('80mmOld');
paperTypes.add('80mm');
paperTypes.add('Custom');
super.initState();
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text("Network Printer Screen ${printProfiles.length}"),
actions: [
PopupMenuButton(
itemBuilder: (_) => printProfiles
.map(
(e) => PopupMenuItem(
enabled: e["key"] != _name,
child: Text("${e["key"]}"),
onTap: () {
setState(() {
_name = e["key"];
});
},
),
)
.toList(),
)
],
),
body: ListView(
padding: EdgeInsets.all(20),
children: [
DropdownButtonHideUnderline(
child: DropdownButtonFormField(
decoration: InputDecoration(labelText: 'Paper Size'),
items: paperTypes.map((item) {
return DropdownMenuItem(
value: item,
child: Text(item),
);
}).toList(),
onChanged: (String? selected) async {
showCustom = false;
if (selected != null) {
if (selected == "58mm") {
paperWidth = PaperSizeWidth.mm58;
charPerLine = PaperSizeMaxPerLine.mm58;
} else if (selected == "80mmOld") {
paperWidth = PaperSizeWidth.mm80_Old;
charPerLine = PaperSizeMaxPerLine.mm80_Old;
} else if (selected == "80mm") {
paperWidth = PaperSizeWidth.mm80;
charPerLine = PaperSizeMaxPerLine.mm80;
} else if (selected == "Custom") {
paperWidth = PaperSizeWidth.mm80;
charPerLine = PaperSizeMaxPerLine.mm80;
showCustom = true;
}
setState(() {});
}
},
),
),
if (showCustom)
Row(
children: [
Expanded(
child: TextFormField(
initialValue: paperWidth.toString(),
onChanged: (val) {
if (val.isNotEmpty) {
paperWidth = int.parse(val);
} else
paperWidth = 0;
},
)),
SizedBox(width: 20),
Expanded(
child: TextFormField(
initialValue: charPerLine.toString(),
onChanged: (val) {
if (val.isNotEmpty) {
charPerLine = int.parse(val);
} else
charPerLine = 0;
},
))
],
),
SizedBox(height: 10),
..._printers
.map((printer) => ListTile(
title: Text("${printer.name}"),
subtitle: Text("${printer.address}"),
leading: Icon(Icons.cable),
onTap: () => _connect(printer),
trailing: printer.connected
? Wrap(
children: [
IconButton(
tooltip: 'ESC POS Command',
onPressed: () => _startPrinter(1, printer),
icon: Icon(Icons.print)),
IconButton(
tooltip: 'Html Print',
onPressed: () => _startPrinter(3, printer),
icon: Icon(Icons.image)),
],
)
: null,
selected: printer.connected,
))
.toList(),
],
),
floatingActionButton: FloatingActionButton(
child: _isLoading ? Icon(Icons.stop) : Icon(Icons.play_arrow),
onPressed: _isLoading ? null : _scan,
),
);
}
_scan() async {
setState(() {
_isLoading = true;
_printers = [];
});
var printers = await NetworkPrinterManager.discover();
setState(() {
_isLoading = false;
_printers = printers;
});
}
Future _connect(NetWorkPrinter printer) async {
var manager = NetworkPrinterManager(printer);
await manager.connect();
setState(() {
_manager = manager;
printer.connected = true;
});
}
_startPrinter(int byteType, NetWorkPrinter printer) async {
await _connect(printer);
// if (_data.isEmpty) {
final content = Demo.getShortReceiptContent();
var stopwatch = Stopwatch()..start();
List<int> data = [];
var profile = await CapabilityProfile.load();
if (byteType == 1) {
data = await ESCPrinterService(null).getSamplePosBytes(
paperSizeWidthMM: paperWidth,
maxPerLine: charPerLine,
profile: profile,
name: _name);
} else if (byteType == 2) {
data = await ESCPrinterService(null).getPdfBytes(
paperSizeWidthMM: paperWidth,
maxPerLine: charPerLine,
profile: profile,
name: _name);
} else if (byteType == 3) {
var service = ESCPrinterService(await WebcontentConverter.contentToImage(
content: content,
executablePath: WebViewHelper.executablePath(),
));
data = await service.getBytes(name: _name);
}
print("Start print data $_name");
if (mounted) setState(() => _data = data);
if (_manager != null) {
print("isConnected ${_manager!.printer.connected}");
await _manager!.writeBytes(_data, isDisconnect: true);
WebcontentConverter.logger
.info("completed executed in ${stopwatch.elapsed}");
}
}
}