794 lines
21 KiB
Dart
794 lines
21 KiB
Dart
import 'dart:async';
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import 'dart:convert';
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import 'dart:io';
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import 'dart:math';
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import 'dart:ui' as ui;
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import 'package:flutter/gestures.dart';
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import 'package:flutter/services.dart';
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import 'package:flutter/widgets.dart';
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import 'package:get/get.dart';
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import '../../models/model.dart';
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import '../../models/platform_model.dart';
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import '../common.dart';
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import '../consts.dart';
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import './state_model.dart';
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/// Mouse button enum.
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enum MouseButtons { left, right, wheel }
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const _kMouseEventDown = 'mousedown';
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const _kMouseEventUp = 'mouseup';
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const _kMouseEventMove = 'mousemove';
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extension ToString on MouseButtons {
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String get value {
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switch (this) {
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case MouseButtons.left:
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return 'left';
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case MouseButtons.right:
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return 'right';
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case MouseButtons.wheel:
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return 'wheel';
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}
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}
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}
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class PointerEventToRust {
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final String kind;
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final String type;
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final dynamic value;
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PointerEventToRust(this.kind, this.type, this.value);
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Map<String, dynamic> toJson() {
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return {
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'k': kind,
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'v': {
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't': type,
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'v': value,
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}
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};
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}
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}
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class InputModel {
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final WeakReference<FFI> parent;
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String keyboardMode = "legacy";
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// keyboard
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var shift = false;
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var ctrl = false;
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var alt = false;
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var command = false;
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// trackpad
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var _trackpadLastDelta = Offset.zero;
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var _stopFling = true;
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var _fling = false;
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Timer? _flingTimer;
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final _flingBaseDelay = 30;
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// trackpad, peer linux
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final _trackpadSpeed = 0.06;
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var _trackpadScrollUnsent = Offset.zero;
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var _lastScale = 1.0;
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// mouse
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final isPhysicalMouse = false.obs;
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int _lastButtons = 0;
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Offset lastMousePos = Offset.zero;
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late final SessionID sessionId;
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bool get keyboardPerm => parent.target!.ffiModel.keyboard;
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String get id => parent.target?.id ?? '';
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String? get peerPlatform => parent.target?.ffiModel.pi.platform;
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InputModel(this.parent) {
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sessionId = parent.target!.sessionId;
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}
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KeyEventResult handleRawKeyEvent(FocusNode data, RawKeyEvent e) {
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if (isDesktop && !stateGlobal.grabKeyboard) {
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return KeyEventResult.handled;
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}
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// * Currently mobile does not enable map mode
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if (isDesktop) {
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bind.sessionGetKeyboardMode(sessionId: sessionId).then((result) {
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keyboardMode = result.toString();
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});
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}
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final key = e.logicalKey;
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if (e is RawKeyDownEvent) {
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if (!e.repeat) {
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if (e.isAltPressed && !alt) {
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alt = true;
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} else if (e.isControlPressed && !ctrl) {
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ctrl = true;
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} else if (e.isShiftPressed && !shift) {
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shift = true;
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} else if (e.isMetaPressed && !command) {
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command = true;
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}
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}
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}
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if (e is RawKeyUpEvent) {
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if (key == LogicalKeyboardKey.altLeft ||
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key == LogicalKeyboardKey.altRight) {
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alt = false;
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} else if (key == LogicalKeyboardKey.controlLeft ||
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key == LogicalKeyboardKey.controlRight) {
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ctrl = false;
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} else if (key == LogicalKeyboardKey.shiftRight ||
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key == LogicalKeyboardKey.shiftLeft) {
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shift = false;
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} else if (key == LogicalKeyboardKey.metaLeft ||
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key == LogicalKeyboardKey.metaRight ||
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key == LogicalKeyboardKey.superKey) {
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command = false;
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}
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}
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// * Currently mobile does not enable map mode
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if (isDesktop && keyboardMode == 'map') {
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mapKeyboardMode(e);
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} else {
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legacyKeyboardMode(e);
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}
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return KeyEventResult.handled;
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}
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void mapKeyboardMode(RawKeyEvent e) {
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int positionCode = -1;
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int platformCode = -1;
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bool down;
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if (e.data is RawKeyEventDataMacOs) {
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RawKeyEventDataMacOs newData = e.data as RawKeyEventDataMacOs;
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positionCode = newData.keyCode;
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platformCode = newData.keyCode;
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} else if (e.data is RawKeyEventDataWindows) {
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RawKeyEventDataWindows newData = e.data as RawKeyEventDataWindows;
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positionCode = newData.scanCode;
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platformCode = newData.keyCode;
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} else if (e.data is RawKeyEventDataLinux) {
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RawKeyEventDataLinux newData = e.data as RawKeyEventDataLinux;
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// scanCode and keyCode of RawKeyEventDataLinux are incorrect.
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// 1. scanCode means keycode
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// 2. keyCode means keysym
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positionCode = newData.scanCode;
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platformCode = newData.keyCode;
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} else if (e.data is RawKeyEventDataAndroid) {
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RawKeyEventDataAndroid newData = e.data as RawKeyEventDataAndroid;
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positionCode = newData.scanCode + 8;
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platformCode = newData.keyCode;
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} else {}
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if (e is RawKeyDownEvent) {
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down = true;
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} else {
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down = false;
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}
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inputRawKey(e.character ?? '', platformCode, positionCode, down);
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}
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/// Send raw Key Event
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void inputRawKey(String name, int platformCode, int positionCode, bool down) {
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const capslock = 1;
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const numlock = 2;
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const scrolllock = 3;
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int lockModes = 0;
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if (HardwareKeyboard.instance.lockModesEnabled
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.contains(KeyboardLockMode.capsLock)) {
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lockModes |= (1 << capslock);
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}
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if (HardwareKeyboard.instance.lockModesEnabled
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.contains(KeyboardLockMode.numLock)) {
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lockModes |= (1 << numlock);
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}
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if (HardwareKeyboard.instance.lockModesEnabled
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.contains(KeyboardLockMode.scrollLock)) {
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lockModes |= (1 << scrolllock);
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}
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bind.sessionHandleFlutterKeyEvent(
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sessionId: sessionId,
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name: name,
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platformCode: platformCode,
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positionCode: positionCode,
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lockModes: lockModes,
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downOrUp: down);
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}
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void legacyKeyboardMode(RawKeyEvent e) {
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if (e is RawKeyDownEvent) {
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if (e.repeat) {
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sendRawKey(e, press: true);
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} else {
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sendRawKey(e, down: true);
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}
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}
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if (e is RawKeyUpEvent) {
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sendRawKey(e);
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}
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}
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void sendRawKey(RawKeyEvent e, {bool? down, bool? press}) {
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// for maximum compatibility
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final label = physicalKeyMap[e.physicalKey.usbHidUsage] ??
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logicalKeyMap[e.logicalKey.keyId] ??
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e.logicalKey.keyLabel;
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inputKey(label, down: down, press: press ?? false);
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}
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/// Send key stroke event.
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/// [down] indicates the key's state(down or up).
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/// [press] indicates a click event(down and up).
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void inputKey(String name, {bool? down, bool? press}) {
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if (!keyboardPerm) return;
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bind.sessionInputKey(
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sessionId: sessionId,
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name: name,
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down: down ?? false,
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press: press ?? true,
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alt: alt,
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ctrl: ctrl,
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shift: shift,
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command: command);
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}
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Map<String, dynamic> _getMouseEvent(PointerEvent evt, String type) {
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final Map<String, dynamic> out = {};
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// Check update event type and set buttons to be sent.
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int buttons = _lastButtons;
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if (type == _kMouseEventMove) {
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// flutter may emit move event if one button is pressed and another button
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// is pressing or releasing.
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if (evt.buttons != _lastButtons) {
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// For simplicity
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// Just consider 3 - 1 ((Left + Right buttons) - Left button)
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// Do not consider 2 - 1 (Right button - Left button)
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// or 6 - 5 ((Right + Mid buttons) - (Left + Mid buttons))
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// and so on
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buttons = evt.buttons - _lastButtons;
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if (buttons > 0) {
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type = _kMouseEventDown;
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} else {
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type = _kMouseEventUp;
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buttons = -buttons;
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}
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}
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} else {
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if (evt.buttons != 0) {
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buttons = evt.buttons;
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}
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}
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_lastButtons = evt.buttons;
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out['buttons'] = buttons;
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out['type'] = type;
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return out;
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}
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/// Send a mouse tap event(down and up).
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void tap(MouseButtons button) {
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sendMouse('down', button);
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sendMouse('up', button);
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}
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void tapDown(MouseButtons button) {
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sendMouse('down', button);
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}
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void tapUp(MouseButtons button) {
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sendMouse('up', button);
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}
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/// Send scroll event with scroll distance [y].
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void scroll(int y) {
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bind.sessionSendMouse(
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sessionId: sessionId,
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msg: json
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.encode(modify({'id': id, 'type': 'wheel', 'y': y.toString()})));
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}
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/// Reset key modifiers to false, including [shift], [ctrl], [alt] and [command].
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void resetModifiers() {
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shift = ctrl = alt = command = false;
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}
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/// Modify the given modifier map [evt] based on current modifier key status.
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Map<String, dynamic> modify(Map<String, dynamic> evt) {
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if (ctrl) evt['ctrl'] = 'true';
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if (shift) evt['shift'] = 'true';
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if (alt) evt['alt'] = 'true';
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if (command) evt['command'] = 'true';
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return evt;
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}
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/// Send mouse press event.
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void sendMouse(String type, MouseButtons button) {
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if (!keyboardPerm) return;
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bind.sessionSendMouse(
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sessionId: sessionId,
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msg: json.encode(modify({'type': type, 'buttons': button.value})));
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}
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void enterOrLeave(bool enter) {
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// Fix status
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if (!enter) {
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resetModifiers();
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}
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_flingTimer?.cancel();
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bind.sessionEnterOrLeave(sessionId: sessionId, enter: enter);
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}
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/// Send mouse movement event with distance in [x] and [y].
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void moveMouse(double x, double y) {
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if (!keyboardPerm) return;
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var x2 = x.toInt();
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var y2 = y.toInt();
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bind.sessionSendMouse(
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sessionId: sessionId,
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msg: json.encode(modify({'x': '$x2', 'y': '$y2'})));
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}
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void onPointHoverImage(PointerHoverEvent e) {
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_stopFling = true;
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if (e.kind != ui.PointerDeviceKind.mouse) return;
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if (!isPhysicalMouse.value) {
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isPhysicalMouse.value = true;
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}
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if (isPhysicalMouse.value) {
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handleMouse(_getMouseEvent(e, _kMouseEventMove), e.position);
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}
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}
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void onPointerPanZoomStart(PointerPanZoomStartEvent e) {
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_lastScale = 1.0;
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_stopFling = true;
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if (peerPlatform == kPeerPlatformAndroid) {
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handlePointerEvent('touch', 'pan_start', e.position);
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}
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}
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// https://docs.flutter.dev/release/breaking-changes/trackpad-gestures
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void onPointerPanZoomUpdate(PointerPanZoomUpdateEvent e) {
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if (peerPlatform != kPeerPlatformAndroid) {
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final scale = ((e.scale - _lastScale) * 1000).toInt();
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_lastScale = e.scale;
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if (scale != 0) {
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bind.sessionSendPointer(
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sessionId: sessionId,
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msg: json.encode(
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PointerEventToRust(kPointerEventKindTouch, 'scale', scale)
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.toJson()));
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return;
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}
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}
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final delta = e.panDelta;
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_trackpadLastDelta = delta;
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var x = delta.dx.toInt();
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var y = delta.dy.toInt();
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if (peerPlatform == kPeerPlatformLinux) {
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_trackpadScrollUnsent += (delta * _trackpadSpeed);
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x = _trackpadScrollUnsent.dx.truncate();
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y = _trackpadScrollUnsent.dy.truncate();
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_trackpadScrollUnsent -= Offset(x.toDouble(), y.toDouble());
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} else {
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if (x == 0 && y == 0) {
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final thr = 0.1;
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if (delta.dx.abs() > delta.dy.abs()) {
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x = delta.dx > thr ? 1 : (delta.dx < -thr ? -1 : 0);
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} else {
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y = delta.dy > thr ? 1 : (delta.dy < -thr ? -1 : 0);
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}
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}
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}
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if (x != 0 || y != 0) {
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if (peerPlatform == kPeerPlatformAndroid) {
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handlePointerEvent('touch', 'pan_update', Offset(x.toDouble(), y.toDouble()));
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} else {
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bind.sessionSendMouse(
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sessionId: sessionId,
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msg: '{"type": "trackpad", "x": "$x", "y": "$y"}');
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}
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}
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}
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void _scheduleFling(double x, double y, int delay) {
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if ((x == 0 && y == 0) || _stopFling) {
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_fling = false;
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return;
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}
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_flingTimer = Timer(Duration(milliseconds: delay), () {
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if (_stopFling) {
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_fling = false;
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return;
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}
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final d = 0.97;
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x *= d;
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y *= d;
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// Try set delta (x,y) and delay.
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var dx = x.toInt();
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var dy = y.toInt();
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if (parent.target?.ffiModel.pi.platform == kPeerPlatformLinux) {
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dx = (x * _trackpadSpeed).toInt();
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dy = (y * _trackpadSpeed).toInt();
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}
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var delay = _flingBaseDelay;
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if (dx == 0 && dy == 0) {
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_fling = false;
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return;
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}
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bind.sessionSendMouse(
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sessionId: sessionId,
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msg: '{"type": "trackpad", "x": "$dx", "y": "$dy"}');
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_scheduleFling(x, y, delay);
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});
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}
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void waitLastFlingDone() {
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if (_fling) {
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_stopFling = true;
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}
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for (var i = 0; i < 5; i++) {
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if (!_fling) {
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break;
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}
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sleep(Duration(milliseconds: 10));
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}
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_flingTimer?.cancel();
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}
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void onPointerPanZoomEnd(PointerPanZoomEndEvent e) {
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if (peerPlatform == kPeerPlatformAndroid) {
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handlePointerEvent('touch', 'pan_end', e.position);
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return;
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}
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bind.sessionSendPointer(
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sessionId: sessionId,
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msg: json.encode(
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PointerEventToRust(kPointerEventKindTouch, 'scale', 0).toJson()));
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waitLastFlingDone();
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_stopFling = false;
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// 2.0 is an experience value
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double minFlingValue = 2.0;
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if (_trackpadLastDelta.dx.abs() > minFlingValue ||
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_trackpadLastDelta.dy.abs() > minFlingValue) {
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_fling = true;
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_scheduleFling(
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_trackpadLastDelta.dx, _trackpadLastDelta.dy, _flingBaseDelay);
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}
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_trackpadLastDelta = Offset.zero;
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}
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void onPointDownImage(PointerDownEvent e) {
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debugPrint("onPointDownImage ${e.kind}");
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_stopFling = true;
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if (e.kind != ui.PointerDeviceKind.mouse) {
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if (isPhysicalMouse.value) {
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isPhysicalMouse.value = false;
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}
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}
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if (isPhysicalMouse.value) {
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handleMouse(_getMouseEvent(e, _kMouseEventDown), e.position);
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}
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}
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void onPointUpImage(PointerUpEvent e) {
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if (e.kind != ui.PointerDeviceKind.mouse) return;
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if (isPhysicalMouse.value) {
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handleMouse(_getMouseEvent(e, _kMouseEventUp), e.position);
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}
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}
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void onPointMoveImage(PointerMoveEvent e) {
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if (e.kind != ui.PointerDeviceKind.mouse) return;
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if (isPhysicalMouse.value) {
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handleMouse(_getMouseEvent(e, _kMouseEventMove), e.position);
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}
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}
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void onPointerSignalImage(PointerSignalEvent e) {
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if (e is PointerScrollEvent) {
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var dx = e.scrollDelta.dx.toInt();
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var dy = e.scrollDelta.dy.toInt();
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if (dx > 0) {
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dx = -1;
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} else if (dx < 0) {
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dx = 1;
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}
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if (dy > 0) {
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dy = -1;
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} else if (dy < 0) {
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dy = 1;
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}
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bind.sessionSendMouse(
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sessionId: sessionId,
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msg: '{"type": "wheel", "x": "$dx", "y": "$dy"}');
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}
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}
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void refreshMousePos() => handleMouse({
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'buttons': 0,
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'type': _kMouseEventMove,
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}, lastMousePos);
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void tryMoveEdgeOnExit(Offset pos) => handleMouse(
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{
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'buttons': 0,
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'type': _kMouseEventMove,
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},
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pos,
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onExit: true,
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);
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int trySetNearestRange(int v, int min, int max, int n) {
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if (v < min && v >= min - n) {
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v = min;
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}
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if (v > max && v <= max + n) {
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v = max;
|
|
}
|
|
return v;
|
|
}
|
|
|
|
Offset setNearestEdge(double x, double y, Rect rect) {
|
|
double left = x - rect.left;
|
|
double right = rect.right - 1 - x;
|
|
double top = y - rect.top;
|
|
double bottom = rect.bottom - 1 - y;
|
|
if (left < right && left < top && left < bottom) {
|
|
x = rect.left;
|
|
}
|
|
if (right < left && right < top && right < bottom) {
|
|
x = rect.right - 1;
|
|
}
|
|
if (top < left && top < right && top < bottom) {
|
|
y = rect.top;
|
|
}
|
|
if (bottom < left && bottom < right && bottom < top) {
|
|
y = rect.bottom - 1;
|
|
}
|
|
return Offset(x, y);
|
|
}
|
|
|
|
void handlePointerEvent(String kind, String type, Offset offset) {
|
|
double x = offset.dx;
|
|
double y = offset.dy;
|
|
if (_checkPeerControlProtected(x, y)) {
|
|
return;
|
|
}
|
|
// Only touch events are handled for now. So we can just ignore buttons.
|
|
// to-do: handle mouse events
|
|
|
|
late final dynamic evtValue;
|
|
if (type == 'pan_update') {
|
|
evtValue = {
|
|
'x': x.toInt(),
|
|
'y': y.toInt(),
|
|
};
|
|
} else {
|
|
final isMoveTypes = ['pan_start', 'pan_end'];
|
|
final pos = handlePointerDevicePos(
|
|
kPointerEventKindTouch,
|
|
x,
|
|
y,
|
|
isMoveTypes.contains(type),
|
|
type,
|
|
);
|
|
if (pos == null) {
|
|
return;
|
|
}
|
|
evtValue = {
|
|
'x': pos.x,
|
|
'y': pos.y,
|
|
};
|
|
}
|
|
|
|
final evt = PointerEventToRust(kind, type, evtValue).toJson();
|
|
bind.sessionSendPointer(
|
|
sessionId: sessionId, msg: json.encode(modify(evt)));
|
|
}
|
|
|
|
bool _checkPeerControlProtected(double x, double y) {
|
|
final cursorModel = parent.target!.cursorModel;
|
|
if (cursorModel.isPeerControlProtected) {
|
|
lastMousePos = ui.Offset(x, y);
|
|
return true;
|
|
}
|
|
|
|
if (!cursorModel.gotMouseControl) {
|
|
bool selfGetControl =
|
|
(x - lastMousePos.dx).abs() > kMouseControlDistance ||
|
|
(y - lastMousePos.dy).abs() > kMouseControlDistance;
|
|
if (selfGetControl) {
|
|
cursorModel.gotMouseControl = true;
|
|
} else {
|
|
lastMousePos = ui.Offset(x, y);
|
|
return true;
|
|
}
|
|
}
|
|
lastMousePos = ui.Offset(x, y);
|
|
return false;
|
|
}
|
|
|
|
void handleMouse(
|
|
Map<String, dynamic> evt,
|
|
Offset offset, {
|
|
bool onExit = false,
|
|
}) {
|
|
double x = offset.dx;
|
|
double y = max(0.0, offset.dy);
|
|
if (_checkPeerControlProtected(x, y)) {
|
|
return;
|
|
}
|
|
|
|
var type = '';
|
|
var isMove = false;
|
|
switch (evt['type']) {
|
|
case _kMouseEventDown:
|
|
type = 'down';
|
|
break;
|
|
case _kMouseEventUp:
|
|
type = 'up';
|
|
break;
|
|
case _kMouseEventMove:
|
|
isMove = true;
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
evt['type'] = type;
|
|
|
|
final pos = handlePointerDevicePos(
|
|
kPointerEventKindMouse,
|
|
x,
|
|
y,
|
|
isMove,
|
|
type,
|
|
onExit: onExit,
|
|
buttons: evt['buttons'],
|
|
);
|
|
if (pos == null) {
|
|
return;
|
|
}
|
|
if (type != '') {
|
|
evt['x'] = '0';
|
|
evt['y'] = '0';
|
|
} else {
|
|
evt['x'] = '${pos.x}';
|
|
evt['y'] = '${pos.y}';
|
|
}
|
|
|
|
Map<int, String> mapButtons = {
|
|
kPrimaryMouseButton: 'left',
|
|
kSecondaryMouseButton: 'right',
|
|
kMiddleMouseButton: 'wheel',
|
|
kBackMouseButton: 'back',
|
|
kForwardMouseButton: 'forward'
|
|
};
|
|
evt['buttons'] = mapButtons[evt['buttons']] ?? '';
|
|
bind.sessionSendMouse(sessionId: sessionId, msg: json.encode(modify(evt)));
|
|
}
|
|
|
|
Point? handlePointerDevicePos(
|
|
String kind,
|
|
double x,
|
|
double y,
|
|
bool isMove,
|
|
String evtType, {
|
|
bool onExit = false,
|
|
int buttons = kPrimaryMouseButton,
|
|
}) {
|
|
y -= CanvasModel.topToEdge;
|
|
x -= CanvasModel.leftToEdge;
|
|
final canvasModel = parent.target!.canvasModel;
|
|
final ffiModel = parent.target!.ffiModel;
|
|
if (isMove) {
|
|
canvasModel.moveDesktopMouse(x, y);
|
|
}
|
|
|
|
final nearThr = 3;
|
|
var nearRight = (canvasModel.size.width - x) < nearThr;
|
|
var nearBottom = (canvasModel.size.height - y) < nearThr;
|
|
final rect = ffiModel.rect;
|
|
if (rect == null) {
|
|
return null;
|
|
}
|
|
final imageWidth = rect.width * canvasModel.scale;
|
|
final imageHeight = rect.height * canvasModel.scale;
|
|
if (canvasModel.scrollStyle == ScrollStyle.scrollbar) {
|
|
x += imageWidth * canvasModel.scrollX;
|
|
y += imageHeight * canvasModel.scrollY;
|
|
|
|
// boxed size is a center widget
|
|
if (canvasModel.size.width > imageWidth) {
|
|
x -= ((canvasModel.size.width - imageWidth) / 2);
|
|
}
|
|
if (canvasModel.size.height > imageHeight) {
|
|
y -= ((canvasModel.size.height - imageHeight) / 2);
|
|
}
|
|
} else {
|
|
x -= canvasModel.x;
|
|
y -= canvasModel.y;
|
|
}
|
|
|
|
x /= canvasModel.scale;
|
|
y /= canvasModel.scale;
|
|
if (canvasModel.scale > 0 && canvasModel.scale < 1) {
|
|
final step = 1.0 / canvasModel.scale - 1;
|
|
if (nearRight) {
|
|
x += step;
|
|
}
|
|
if (nearBottom) {
|
|
y += step;
|
|
}
|
|
}
|
|
x += rect.left;
|
|
y += rect.top;
|
|
|
|
if (onExit) {
|
|
final pos = setNearestEdge(x, y, rect);
|
|
x = pos.dx;
|
|
y = pos.dy;
|
|
}
|
|
|
|
var evtX = 0;
|
|
var evtY = 0;
|
|
try {
|
|
evtX = x.round();
|
|
evtY = y.round();
|
|
} catch (e) {
|
|
debugPrintStack(
|
|
label: 'canvasModel.scale value ${canvasModel.scale}, $e');
|
|
return null;
|
|
}
|
|
|
|
int minX = rect.left.toInt();
|
|
int maxX = (rect.left + rect.width).toInt() - 1;
|
|
int minY = rect.top.toInt();
|
|
int maxY = (rect.top + rect.height).toInt() - 1;
|
|
evtX = trySetNearestRange(evtX, minX, maxX, 5);
|
|
evtY = trySetNearestRange(evtY, minY, maxY, 5);
|
|
if (kind == kPointerEventKindMouse) {
|
|
if (evtX < minX || evtY < minY || evtX > maxX || evtY > maxY) {
|
|
// If left mouse up, no early return.
|
|
if (!(buttons == kPrimaryMouseButton && evtType == 'up')) {
|
|
return null;
|
|
}
|
|
}
|
|
}
|
|
|
|
return Point(evtX, evtY);
|
|
}
|
|
|
|
/// Web only
|
|
void listenToMouse(bool yesOrNo) {
|
|
if (yesOrNo) {
|
|
platformFFI.startDesktopWebListener();
|
|
} else {
|
|
platformFFI.stopDesktopWebListener();
|
|
}
|
|
}
|
|
}
|