rustdesk/lib/web_model.dart
2022-02-17 15:22:14 +08:00

176 lines
5.1 KiB
Dart

import 'dart:typed_data';
import 'dart:js' as js;
import 'package:flutter/cupertino.dart';
import 'dart:convert';
import 'common.dart';
import 'dart:html';
import 'dart:async';
final List<StreamSubscription<MouseEvent>> mouseListeners = [];
final List<StreamSubscription<KeyboardEvent>> keyListeners = [];
int lastMouseDownButtons = 0;
bool mouseIn = false;
class PlatformFFI {
static void clearRgbaFrame() {}
static Uint8List getRgba() {
return js.context.callMethod('getRgba');
}
static Future<String> getVersion() async {
return getByName('version');
}
static String getByName(String name, [String arg = '']) {
return js.context.callMethod('getByName', [name, arg]);
}
static void setByName(String name, [String value = '']) {
js.context.callMethod('setByName', [name, value]);
}
static Future<Null> init() async {
isWeb = true;
isDesktop = !js.context.callMethod('isMobile');
js.context.callMethod('init');
}
// MouseRegion onHover not work for mouse move when right button down
static void startDesktopWebListener(
Function(Map<String, dynamic>) handleMouse) {
mouseIn = true;
lastMouseDownButtons = 0;
// document.body.getElementsByTagName('flt-glass-pane')[0].style.cursor = 'none';
mouseListeners
.add(window.document.onMouseEnter.listen((evt) => mouseIn = true));
mouseListeners
.add(window.document.onMouseLeave.listen((evt) => mouseIn = false));
mouseListeners.add(window.document.onMouseMove
.listen((evt) => handleMouse(getEvent(evt))));
mouseListeners.add(window.document.onMouseDown
.listen((evt) => handleMouse(getEvent(evt))));
mouseListeners.add(
window.document.onMouseUp.listen((evt) => handleMouse(getEvent(evt))));
mouseListeners.add(window.document.onMouseWheel.listen((evt) {
var dx = evt.deltaX;
var dy = evt.deltaY;
if (dx > 0)
dx = -1;
else if (dx < 0) dx = 1;
if (dy > 0)
dy = -1;
else if (dy < 0) dy = 1;
setByName('send_mouse', '{"type": "wheel", "x": "$dx", "y": "$dy"}');
}));
mouseListeners.add(
window.document.onContextMenu.listen((evt) => evt.preventDefault()));
keyListeners
.add(window.document.onKeyDown.listen((evt) => handleKey(evt, true)));
keyListeners
.add(window.document.onKeyUp.listen((evt) => handleKey(evt, false)));
}
static void stopDesktopWebListener() {
mouseIn = true;
mouseListeners.forEach((l) {
l.cancel();
});
mouseListeners.clear();
keyListeners.forEach((l) {
l.cancel();
});
keyListeners.clear();
}
static void setMethodCallHandler(FMethod callback) {}
static Future<bool> invokeMethod(String method) async {
return true;
}
}
Map<String, dynamic> getEvent(MouseEvent evt) {
// https://github.com/novnc/noVNC/blob/679b45fa3b453c7cf32f4b4455f4814818ecf161/core/rfb.js
// https://developer.mozilla.org/zh-CN/docs/Web/API/Element/mousedown_event
final Map<String, dynamic> out = {};
out['type'] = evt.type;
out['x'] = evt.client.x;
out['y'] = evt.client.y;
if (evt.altKey) out['alt'] = 'true';
if (evt.shiftKey) out['shift'] = 'true';
if (evt.ctrlKey) out['ctrl'] = 'true';
if (evt.metaKey) out['command'] = 'true';
out['buttons'] = evt
.buttons; // left button: 1, right button: 2, middle button: 4, 1 | 2 = 3 (left + right)
if (evt.buttons != 0) {
lastMouseDownButtons = evt.buttons!;
} else {
out['buttons'] = lastMouseDownButtons;
}
return out;
}
void handleKey(KeyboardEvent evt, bool down) {
if (!mouseIn) return;
evt.stopPropagation();
evt.preventDefault();
evt.stopImmediatePropagation();
print('${evt.code} ${evt.key} ${evt.location}');
final out = {};
var name = ctrlKeyMap[evt.code];
if (name == null) {
if (evt.code == evt.key) {
name = evt.code;
} else {
name = evt.key;
if (name!=null && name.toLowerCase() != name.toUpperCase() &&
name == name.toUpperCase()) {
if (!evt.shiftKey) out['shift'] = 'true';
}
}
}
out['name'] = name;
if (evt.altKey) out['alt'] = 'true';
if (evt.shiftKey) out['shift'] = 'true';
if (evt.ctrlKey) out['ctrl'] = 'true';
if (evt.metaKey) out['command'] = 'true';
if (down) out['down'] = 'true';
PlatformFFI.setByName('input_key', json.encode(out));
}
final localeName = window.navigator.language;
final ctrlKeyMap = {
'AltLeft': 'Alt',
'AltRight': 'RAlt',
'ShiftLeft': 'Shift',
'ShiftRight': 'RShift',
'ControlLeft': 'Control',
'ControlRight': 'RControl',
'MetaLeft': 'Meta',
'MetaRight': 'RWin',
'ContextMenu': 'Apps',
'ArrowUp': 'UpArrow',
'ArrowDown': 'DownArrow',
'ArrowLeft': 'LeftArrow',
'ArrowRight': 'RightArrow',
'NumpadDecimal': 'Decimal',
'NumpadDivide': 'Divide',
'NumpadMultiply': 'Multiply',
'NumpadSubtract': 'Subtract',
'NumpadAdd': 'Add',
'NumpadEnter': 'NumpadEnter',
'Enter': 'Return',
'Space': 'Space',
'NumpadClear': 'Clear',
'NumpadBackspace': 'Backspace',
'PrintScreen': 'Snapshot',
'HangulMode': 'Hangul',
'HanjaMode': 'Hanja',
'KanaMode': 'Kana',
'JunjaMode': 'Junja',
'KanjiMode': 'Hanja',
};