rustdesk/flutter_hbb/lib/common.dart
2020-11-16 20:20:02 +08:00

107 lines
2.7 KiB
Dart

import 'package:flutter/material.dart';
import 'package:ffi/ffi.dart';
import 'package:path_provider/path_provider.dart';
import 'dart:io';
import 'dart:ffi';
import 'dart:async';
import 'dart:convert';
class HexColor extends Color {
HexColor(final String hexColor) : super(_getColorFromHex(hexColor));
static int _getColorFromHex(String hexColor) {
hexColor = hexColor.toUpperCase().replaceAll('#', '');
if (hexColor.length == 6) {
hexColor = 'FF' + hexColor;
}
return int.parse(hexColor, radix: 16);
}
}
class MyTheme {
static const Color grayBg = Color(0xFFEEEEEE);
static const Color white = Color(0xFFFFFFFF);
}
typedef F1 = void Function(Pointer<Utf8>);
typedef F2 = Pointer<Utf8> Function(Pointer<Utf8>);
typedef F3 = void Function(Pointer<Utf8>, Pointer<Utf8>);
// https://juejin.im/post/6844903864852807694
class FfiModel with ChangeNotifier {
F1 _freeCString;
F2 _getByName;
F3 _setByName;
FfiModel() {
initialzeFFI();
}
void addRemote() {
notifyListeners();
}
void connect(String id) {
setByName("connect", id);
_setByName(Utf8.toUtf8("connect"), Utf8.toUtf8(id));
}
void setByName(String name, String value) {
_setByName(Utf8.toUtf8(name), Utf8.toUtf8(value));
}
String getByName(String name) {
var p = _getByName(Utf8.toUtf8(name));
var res = Utf8.fromUtf8(p);
// https://github.com/brickpop/flutter-rust-ffi
_freeCString(p);
return res;
}
String getId() {
return getByName("remote_id");
}
List<Peer> peers() {
try {
List<dynamic> peers = json.decode(getByName("peers"));
return peers
.map((s) => s as List<dynamic>)
.map((s) =>
Peer.fromJson(s[0] as String, s[1] as Map<String, dynamic>))
.toList();
} catch (e) {
print(e);
}
return [];
}
Future<Null> initialzeFFI() async {
final dylib = Platform.isAndroid
? DynamicLibrary.open('librustdesk.so')
: DynamicLibrary.process();
_getByName = dylib.lookupFunction<F2, F2>('get_by_name');
_setByName =
dylib.lookupFunction<Void Function(Pointer<Utf8>, Pointer<Utf8>), F3>(
'set_by_name');
_freeCString = dylib
.lookupFunction<Void Function(Pointer<Utf8>), F1>('rust_cstr_free');
final dir = (await getApplicationDocumentsDirectory()).path;
setByName("init", dir);
notifyListeners();
}
}
class Peer {
final String id;
final String username;
final String hostname;
final String platform;
Peer.fromJson(String id, Map<String, dynamic> json)
: id = id,
username = json['username'],
hostname = json['hostname'],
platform = json['platform'];
}