* Flutter web, custom cursor Signed-off-by: fufesou <shuanglongchen@yeah.net> * trivial changes Signed-off-by: fufesou <shuanglongchen@yeah.net> * Flutter web, custom cursor, use date after 'updateGetKey()' Signed-off-by: fufesou <shuanglongchen@yeah.net> * trivial changes Signed-off-by: fufesou <shuanglongchen@yeah.net> --------- Signed-off-by: fufesou <shuanglongchen@yeah.net>
		
			
				
	
	
		
			853 lines
		
	
	
		
			27 KiB
		
	
	
	
		
			Dart
		
	
	
	
	
	
			
		
		
	
	
			853 lines
		
	
	
		
			27 KiB
		
	
	
	
		
			Dart
		
	
	
	
	
	
import 'dart:async';
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import 'package:desktop_multi_window/desktop_multi_window.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter/services.dart';
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import 'package:get/get.dart';
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import 'package:provider/provider.dart';
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import 'package:wakelock_plus/wakelock_plus.dart';
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import 'package:flutter_improved_scrolling/flutter_improved_scrolling.dart';
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import '../../consts.dart';
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import '../../common/widgets/overlay.dart';
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import '../../common/widgets/remote_input.dart';
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import '../../common.dart';
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import '../../common/widgets/dialog.dart';
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import '../../common/widgets/toolbar.dart';
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import '../../models/model.dart';
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import '../../models/desktop_render_texture.dart';
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import '../../models/platform_model.dart';
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import '../../common/shared_state.dart';
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import '../../utils/image.dart';
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import '../widgets/remote_toolbar.dart';
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import '../widgets/kb_layout_type_chooser.dart';
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import '../widgets/tabbar_widget.dart';
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import 'package:flutter_hbb/native/custom_cursor.dart'
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    if (dart.library.html) 'package:flutter_hbb/web/custom_cursor.dart';
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final SimpleWrapper<bool> _firstEnterImage = SimpleWrapper(false);
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// Used to skip session close if "move to new window" is clicked.
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final Map<String, bool> closeSessionOnDispose = {};
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class RemotePage extends StatefulWidget {
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  RemotePage({
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    Key? key,
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    required this.id,
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    required this.toolbarState,
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    this.sessionId,
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    this.tabWindowId,
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    this.password,
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    this.display,
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    this.displays,
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    this.tabController,
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    this.switchUuid,
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    this.forceRelay,
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    this.isSharedPassword,
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  }) : super(key: key);
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  final String id;
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  final SessionID? sessionId;
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  final int? tabWindowId;
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  final int? display;
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  final List<int>? displays;
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  final String? password;
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  final ToolbarState toolbarState;
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  final String? switchUuid;
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  final bool? forceRelay;
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  final bool? isSharedPassword;
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  final SimpleWrapper<State<RemotePage>?> _lastState = SimpleWrapper(null);
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  final DesktopTabController? tabController;
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  FFI get ffi => (_lastState.value! as _RemotePageState)._ffi;
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  @override
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  State<RemotePage> createState() {
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    final state = _RemotePageState();
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    _lastState.value = state;
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    return state;
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  }
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}
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class _RemotePageState extends State<RemotePage>
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    with AutomaticKeepAliveClientMixin, MultiWindowListener {
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  Timer? _timer;
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  String keyboardMode = "legacy";
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  bool _isWindowBlur = false;
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  final _cursorOverImage = false.obs;
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  late RxBool _showRemoteCursor;
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  late RxBool _zoomCursor;
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  late RxBool _remoteCursorMoved;
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  late RxBool _keyboardEnabled;
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  var _blockableOverlayState = BlockableOverlayState();
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  final FocusNode _rawKeyFocusNode = FocusNode(debugLabel: "rawkeyFocusNode");
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  Function(bool)? _onEnterOrLeaveImage4Toolbar;
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  late FFI _ffi;
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  SessionID get sessionId => _ffi.sessionId;
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  void _initStates(String id) {
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    initSharedStates(id);
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    _zoomCursor = PeerBoolOption.find(id, 'zoom-cursor');
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    _showRemoteCursor = ShowRemoteCursorState.find(id);
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    _keyboardEnabled = KeyboardEnabledState.find(id);
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    _remoteCursorMoved = RemoteCursorMovedState.find(id);
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  }
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  @override
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  void initState() {
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    super.initState();
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    _initStates(widget.id);
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    _ffi = FFI(widget.sessionId);
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    Get.put(_ffi, tag: widget.id);
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    _ffi.imageModel.addCallbackOnFirstImage((String peerId) {
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      showKBLayoutTypeChooserIfNeeded(
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          _ffi.ffiModel.pi.platform, _ffi.dialogManager);
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    });
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    _ffi.start(
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      widget.id,
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      password: widget.password,
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      isSharedPassword: widget.isSharedPassword,
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      switchUuid: widget.switchUuid,
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      forceRelay: widget.forceRelay,
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      tabWindowId: widget.tabWindowId,
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      display: widget.display,
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      displays: widget.displays,
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    );
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    WidgetsBinding.instance.addPostFrameCallback((_) {
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      SystemChrome.setEnabledSystemUIMode(SystemUiMode.manual, overlays: []);
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      _ffi.dialogManager
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          .showLoading(translate('Connecting...'), onCancel: closeConnection);
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    });
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    if (!isLinux) {
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      WakelockPlus.enable();
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    }
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    _ffi.ffiModel.updateEventListener(sessionId, widget.id);
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    if (!isWeb) bind.pluginSyncUi(syncTo: kAppTypeDesktopRemote);
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    _ffi.qualityMonitorModel.checkShowQualityMonitor(sessionId);
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    // Session option should be set after models.dart/FFI.start
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    _showRemoteCursor.value = bind.sessionGetToggleOptionSync(
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        sessionId: sessionId, arg: 'show-remote-cursor');
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    _zoomCursor.value = bind.sessionGetToggleOptionSync(
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        sessionId: sessionId, arg: 'zoom-cursor');
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    DesktopMultiWindow.addListener(this);
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    // if (!_isCustomCursorInited) {
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    //   customCursorController.registerNeedUpdateCursorCallback(
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    //       (String? lastKey, String? currentKey) async {
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    //     if (_firstEnterImage.value) {
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    //       _firstEnterImage.value = false;
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    //       return true;
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    //     }
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    //     return lastKey == null || lastKey != currentKey;
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    //   });
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    //   _isCustomCursorInited = true;
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    // }
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    _blockableOverlayState.applyFfi(_ffi);
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    widget.tabController?.onSelected?.call(widget.id);
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  }
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  @override
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  void onWindowBlur() {
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    super.onWindowBlur();
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    // On windows, we use `focus` way to handle keyboard better.
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    // Now on Linux, there's some rdev issues which will break the input.
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    // We disable the `focus` way for non-Windows temporarily.
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    if (isWindows) {
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      _isWindowBlur = true;
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      // unfocus the primary-focus when the whole window is lost focus,
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      // and let OS to handle events instead.
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      _rawKeyFocusNode.unfocus();
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    }
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  }
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  @override
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  void onWindowFocus() {
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    super.onWindowFocus();
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    // See [onWindowBlur].
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    if (isWindows) {
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      _isWindowBlur = false;
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    }
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  }
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  @override
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  void onWindowRestore() {
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    super.onWindowRestore();
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    // On windows, we use `onWindowRestore` way to handle window restore from
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    // a minimized state.
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    if (isWindows) {
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      _isWindowBlur = false;
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    }
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    if (!isLinux) {
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      WakelockPlus.enable();
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    }
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  }
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  // When the window is unminimized, onWindowMaximize or onWindowRestore can be called when the old state was maximized or not.
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  @override
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  void onWindowMaximize() {
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    super.onWindowMaximize();
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    if (!isLinux) {
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      WakelockPlus.enable();
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    }
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  }
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  @override
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  void onWindowMinimize() {
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    super.onWindowMinimize();
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    if (!isLinux) {
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      WakelockPlus.disable();
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    }
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  }
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  @override
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  Future<void> dispose() async {
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    final closeSession = closeSessionOnDispose.remove(widget.id) ?? true;
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    // https://github.com/flutter/flutter/issues/64935
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    super.dispose();
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    debugPrint("REMOTE PAGE dispose session $sessionId ${widget.id}");
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    _ffi.textureModel.onRemotePageDispose(closeSession);
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    // ensure we leave this session, this is a double check
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    _ffi.inputModel.enterOrLeave(false);
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    DesktopMultiWindow.removeListener(this);
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    _ffi.dialogManager.hideMobileActionsOverlay();
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    _ffi.recordingModel.onClose();
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    _rawKeyFocusNode.dispose();
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    await _ffi.close(closeSession: closeSession);
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    _timer?.cancel();
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    _ffi.dialogManager.dismissAll();
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    if (closeSession) {
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      await SystemChrome.setEnabledSystemUIMode(SystemUiMode.manual,
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          overlays: SystemUiOverlay.values);
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    }
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    if (!isLinux) {
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      await WakelockPlus.disable();
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    }
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    await Get.delete<FFI>(tag: widget.id);
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    removeSharedStates(widget.id);
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  }
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  Widget emptyOverlay() => BlockableOverlay(
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        /// the Overlay key will be set with _blockableOverlayState in BlockableOverlay
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        /// see override build() in [BlockableOverlay]
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        state: _blockableOverlayState,
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        underlying: Container(
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          color: Colors.transparent,
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        ),
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      );
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  Widget buildBody(BuildContext context) {
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    remoteToolbar(BuildContext context) => RemoteToolbar(
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          id: widget.id,
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          ffi: _ffi,
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          state: widget.toolbarState,
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          onEnterOrLeaveImageSetter: (func) =>
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              _onEnterOrLeaveImage4Toolbar = func,
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          onEnterOrLeaveImageCleaner: () => _onEnterOrLeaveImage4Toolbar = null,
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          setRemoteState: setState,
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        );
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    bodyWidget() {
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      return Stack(
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        children: [
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          Container(
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              color: Colors.black,
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              child: RawKeyFocusScope(
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                  focusNode: _rawKeyFocusNode,
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                  onFocusChange: (bool imageFocused) {
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                    debugPrint(
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                        "onFocusChange(window active:${!_isWindowBlur}) $imageFocused");
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                    // See [onWindowBlur].
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                    if (isWindows) {
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                      if (_isWindowBlur) {
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                        imageFocused = false;
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                        Future.delayed(Duration.zero, () {
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                          _rawKeyFocusNode.unfocus();
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                        });
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                      }
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                      if (imageFocused) {
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                        _ffi.inputModel.enterOrLeave(true);
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                      } else {
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                        _ffi.inputModel.enterOrLeave(false);
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                      }
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                    }
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                  },
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                  inputModel: _ffi.inputModel,
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                  child: getBodyForDesktop(context))),
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          Stack(
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            children: [
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              _ffi.ffiModel.pi.isSet.isTrue &&
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                      _ffi.ffiModel.waitForFirstImage.isTrue
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                  ? emptyOverlay()
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                  : () {
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                      _ffi.ffiModel.tryShowAndroidActionsOverlay();
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                      return Offstage();
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                    }(),
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              // Use Overlay to enable rebuild every time on menu button click.
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              _ffi.ffiModel.pi.isSet.isTrue
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                  ? Overlay(
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                      initialEntries: [OverlayEntry(builder: remoteToolbar)])
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                  : remoteToolbar(context),
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              _ffi.ffiModel.pi.isSet.isFalse ? emptyOverlay() : Offstage(),
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            ],
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          ),
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        ],
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      );
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    }
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    return Scaffold(
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      backgroundColor: Theme.of(context).colorScheme.background,
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      body: Obx(() {
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        final imageReady = _ffi.ffiModel.pi.isSet.isTrue &&
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            _ffi.ffiModel.waitForFirstImage.isFalse;
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        if (imageReady) {
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          // If the privacy mode(disable physical displays) is switched,
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          // we should not dismiss the dialog immediately.
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          if (DateTime.now().difference(togglePrivacyModeTime) >
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              const Duration(milliseconds: 3000)) {
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            // `dismissAll()` is to ensure that the state is clean.
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            // It's ok to call dismissAll() here.
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            _ffi.dialogManager.dismissAll();
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            // Recreate the block state to refresh the state.
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            _blockableOverlayState = BlockableOverlayState();
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            _blockableOverlayState.applyFfi(_ffi);
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          }
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          // Block the whole `bodyWidget()` when dialog shows.
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          return BlockableOverlay(
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            underlying: bodyWidget(),
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            state: _blockableOverlayState,
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          );
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        } else {
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          // `_blockableOverlayState` is not recreated here.
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          // The toolbar's block state won't work properly when reconnecting, but that's okay.
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          return bodyWidget();
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        }
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      }),
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    );
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  }
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  @override
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  Widget build(BuildContext context) {
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    super.build(context);
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    return WillPopScope(
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        onWillPop: () async {
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          clientClose(sessionId, _ffi.dialogManager);
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          return false;
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        },
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        child: MultiProvider(providers: [
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          ChangeNotifierProvider.value(value: _ffi.ffiModel),
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          ChangeNotifierProvider.value(value: _ffi.imageModel),
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          ChangeNotifierProvider.value(value: _ffi.cursorModel),
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          ChangeNotifierProvider.value(value: _ffi.canvasModel),
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          ChangeNotifierProvider.value(value: _ffi.recordingModel),
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        ], child: buildBody(context)));
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  }
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  void enterView(PointerEnterEvent evt) {
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    _cursorOverImage.value = true;
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    _firstEnterImage.value = true;
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    if (_onEnterOrLeaveImage4Toolbar != null) {
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      try {
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        _onEnterOrLeaveImage4Toolbar!(true);
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      } catch (e) {
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        //
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      }
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    }
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    // See [onWindowBlur].
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    if (!isWindows) {
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      if (!_rawKeyFocusNode.hasFocus) {
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        _rawKeyFocusNode.requestFocus();
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      }
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      _ffi.inputModel.enterOrLeave(true);
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    }
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  }
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  void leaveView(PointerExitEvent evt) {
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    if (_ffi.ffiModel.keyboard) {
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      _ffi.inputModel.tryMoveEdgeOnExit(evt.position);
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    }
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    _cursorOverImage.value = false;
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    _firstEnterImage.value = false;
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    if (_onEnterOrLeaveImage4Toolbar != null) {
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      try {
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        _onEnterOrLeaveImage4Toolbar!(false);
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      } catch (e) {
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        //
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      }
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    }
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    // See [onWindowBlur].
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    if (!isWindows) {
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      _ffi.inputModel.enterOrLeave(false);
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    }
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  }
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  Widget _buildRawTouchAndPointerRegion(
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    Widget child,
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    PointerEnterEventListener? onEnter,
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    PointerExitEventListener? onExit,
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  ) {
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    return RawTouchGestureDetectorRegion(
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      child: _buildRawPointerMouseRegion(child, onEnter, onExit),
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      ffi: _ffi,
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    );
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  }
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  Widget _buildRawPointerMouseRegion(
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    Widget child,
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    PointerEnterEventListener? onEnter,
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    PointerExitEventListener? onExit,
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  ) {
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    return RawPointerMouseRegion(
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      onEnter: onEnter,
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      onExit: onExit,
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      onPointerDown: (event) {
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        // A double check for blur status.
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        // Note: If there's an `onPointerDown` event is triggered, `_isWindowBlur` is expected being false.
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        // Sometimes the system does not send the necessary focus event to flutter. We should manually
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        // handle this inconsistent status by setting `_isWindowBlur` to false. So we can
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        // ensure the grab-key thread is running when our users are clicking the remote canvas.
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        if (_isWindowBlur) {
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          debugPrint(
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              "Unexpected status: onPointerDown is triggered while the remote window is in blur status");
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          _isWindowBlur = false;
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        }
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        if (!_rawKeyFocusNode.hasFocus) {
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          _rawKeyFocusNode.requestFocus();
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        }
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      },
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      inputModel: _ffi.inputModel,
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      child: child,
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    );
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  }
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  Widget getBodyForDesktop(BuildContext context) {
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    var paints = <Widget>[
 | 
						|
      MouseRegion(onEnter: (evt) {
 | 
						|
        if (!isWeb) bind.hostStopSystemKeyPropagate(stopped: false);
 | 
						|
      }, onExit: (evt) {
 | 
						|
        if (!isWeb) bind.hostStopSystemKeyPropagate(stopped: true);
 | 
						|
      }, child: LayoutBuilder(builder: (context, constraints) {
 | 
						|
        Future.delayed(Duration.zero, () {
 | 
						|
          Provider.of<CanvasModel>(context, listen: false).updateViewStyle();
 | 
						|
        });
 | 
						|
        final peerDisplay = CurrentDisplayState.find(widget.id);
 | 
						|
        return Obx(
 | 
						|
          () => _ffi.ffiModel.pi.isSet.isFalse
 | 
						|
              ? Container(color: Colors.transparent)
 | 
						|
              : Obx(() {
 | 
						|
                  _ffi.textureModel.updateCurrentDisplay(peerDisplay.value);
 | 
						|
                  return ImagePaint(
 | 
						|
                    id: widget.id,
 | 
						|
                    zoomCursor: _zoomCursor,
 | 
						|
                    cursorOverImage: _cursorOverImage,
 | 
						|
                    keyboardEnabled: _keyboardEnabled,
 | 
						|
                    remoteCursorMoved: _remoteCursorMoved,
 | 
						|
                    listenerBuilder: (child) => _buildRawTouchAndPointerRegion(
 | 
						|
                        child, enterView, leaveView),
 | 
						|
                    ffi: _ffi,
 | 
						|
                  );
 | 
						|
                }),
 | 
						|
        );
 | 
						|
      }))
 | 
						|
    ];
 | 
						|
 | 
						|
    if (!_ffi.canvasModel.cursorEmbedded) {
 | 
						|
      paints.add(Obx(() => Offstage(
 | 
						|
          offstage: _showRemoteCursor.isFalse || _remoteCursorMoved.isFalse,
 | 
						|
          child: CursorPaint(
 | 
						|
            id: widget.id,
 | 
						|
            zoomCursor: _zoomCursor,
 | 
						|
          ))));
 | 
						|
    }
 | 
						|
    paints.add(
 | 
						|
      Positioned(
 | 
						|
        top: 10,
 | 
						|
        right: 10,
 | 
						|
        child: _buildRawTouchAndPointerRegion(
 | 
						|
            QualityMonitor(_ffi.qualityMonitorModel), null, null),
 | 
						|
      ),
 | 
						|
    );
 | 
						|
    return Stack(
 | 
						|
      children: paints,
 | 
						|
    );
 | 
						|
  }
 | 
						|
 | 
						|
  @override
 | 
						|
  bool get wantKeepAlive => true;
 | 
						|
}
 | 
						|
 | 
						|
class ImagePaint extends StatefulWidget {
 | 
						|
  final FFI ffi;
 | 
						|
  final String id;
 | 
						|
  final RxBool zoomCursor;
 | 
						|
  final RxBool cursorOverImage;
 | 
						|
  final RxBool keyboardEnabled;
 | 
						|
  final RxBool remoteCursorMoved;
 | 
						|
  final Widget Function(Widget)? listenerBuilder;
 | 
						|
 | 
						|
  ImagePaint(
 | 
						|
      {Key? key,
 | 
						|
      required this.ffi,
 | 
						|
      required this.id,
 | 
						|
      required this.zoomCursor,
 | 
						|
      required this.cursorOverImage,
 | 
						|
      required this.keyboardEnabled,
 | 
						|
      required this.remoteCursorMoved,
 | 
						|
      this.listenerBuilder})
 | 
						|
      : super(key: key);
 | 
						|
 | 
						|
  @override
 | 
						|
  State<StatefulWidget> createState() => _ImagePaintState();
 | 
						|
}
 | 
						|
 | 
						|
class _ImagePaintState extends State<ImagePaint> {
 | 
						|
  bool _lastRemoteCursorMoved = false;
 | 
						|
 | 
						|
  String get id => widget.id;
 | 
						|
  RxBool get zoomCursor => widget.zoomCursor;
 | 
						|
  RxBool get cursorOverImage => widget.cursorOverImage;
 | 
						|
  RxBool get keyboardEnabled => widget.keyboardEnabled;
 | 
						|
  RxBool get remoteCursorMoved => widget.remoteCursorMoved;
 | 
						|
  Widget Function(Widget)? get listenerBuilder => widget.listenerBuilder;
 | 
						|
 | 
						|
  @override
 | 
						|
  void initState() {
 | 
						|
    super.initState();
 | 
						|
  }
 | 
						|
 | 
						|
  @override
 | 
						|
  Widget build(BuildContext context) {
 | 
						|
    final m = Provider.of<ImageModel>(context);
 | 
						|
    var c = Provider.of<CanvasModel>(context);
 | 
						|
    final s = c.scale;
 | 
						|
 | 
						|
    bool isViewAdaptive() => c.viewStyle.style == kRemoteViewStyleAdaptive;
 | 
						|
    bool isViewOriginal() => c.viewStyle.style == kRemoteViewStyleOriginal;
 | 
						|
 | 
						|
    mouseRegion({child}) => Obx(() {
 | 
						|
          double getCursorScale() {
 | 
						|
            var c = Provider.of<CanvasModel>(context);
 | 
						|
            var cursorScale = 1.0;
 | 
						|
            if (isWindows) {
 | 
						|
              // debug win10
 | 
						|
              if (zoomCursor.value && isViewAdaptive()) {
 | 
						|
                cursorScale = s * c.devicePixelRatio;
 | 
						|
              }
 | 
						|
            } else {
 | 
						|
              if (zoomCursor.value || isViewOriginal()) {
 | 
						|
                cursorScale = s;
 | 
						|
              }
 | 
						|
            }
 | 
						|
            return cursorScale;
 | 
						|
          }
 | 
						|
 | 
						|
          return MouseRegion(
 | 
						|
              cursor: cursorOverImage.isTrue
 | 
						|
                  ? c.cursorEmbedded
 | 
						|
                      ? SystemMouseCursors.none
 | 
						|
                      : keyboardEnabled.isTrue
 | 
						|
                          ? (() {
 | 
						|
                              if (remoteCursorMoved.isTrue) {
 | 
						|
                                _lastRemoteCursorMoved = true;
 | 
						|
                                return SystemMouseCursors.none;
 | 
						|
                              } else {
 | 
						|
                                if (_lastRemoteCursorMoved) {
 | 
						|
                                  _lastRemoteCursorMoved = false;
 | 
						|
                                  _firstEnterImage.value = true;
 | 
						|
                                }
 | 
						|
                                return _buildCustomCursor(
 | 
						|
                                    context, getCursorScale());
 | 
						|
                              }
 | 
						|
                            }())
 | 
						|
                          : _buildDisabledCursor(context, getCursorScale())
 | 
						|
                  : MouseCursor.defer,
 | 
						|
              onHover: (evt) {},
 | 
						|
              child: child);
 | 
						|
        });
 | 
						|
 | 
						|
    if (c.imageOverflow.isTrue && c.scrollStyle == ScrollStyle.scrollbar) {
 | 
						|
      final paintWidth = c.getDisplayWidth() * s;
 | 
						|
      final paintHeight = c.getDisplayHeight() * s;
 | 
						|
      final paintSize = Size(paintWidth, paintHeight);
 | 
						|
      final paintWidget = useTextureRender
 | 
						|
          ? _BuildPaintTextureRender(
 | 
						|
              c, s, Offset.zero, paintSize, isViewOriginal())
 | 
						|
          : _buildScrollbarNonTextureRender(m, paintSize, s);
 | 
						|
      return NotificationListener<ScrollNotification>(
 | 
						|
          onNotification: (notification) {
 | 
						|
            c.updateScrollPercent();
 | 
						|
            return false;
 | 
						|
          },
 | 
						|
          child: mouseRegion(
 | 
						|
            child: Obx(() => _buildCrossScrollbarFromLayout(
 | 
						|
                  context,
 | 
						|
                  _buildListener(paintWidget),
 | 
						|
                  c.size,
 | 
						|
                  paintSize,
 | 
						|
                  c.scrollHorizontal,
 | 
						|
                  c.scrollVertical,
 | 
						|
                )),
 | 
						|
          ));
 | 
						|
    } else {
 | 
						|
      if (c.size.width > 0 && c.size.height > 0) {
 | 
						|
        final paintWidget = useTextureRender
 | 
						|
            ? _BuildPaintTextureRender(
 | 
						|
                c,
 | 
						|
                s,
 | 
						|
                Offset(
 | 
						|
                  isLinux ? c.x.toInt().toDouble() : c.x,
 | 
						|
                  isLinux ? c.y.toInt().toDouble() : c.y,
 | 
						|
                ),
 | 
						|
                c.size,
 | 
						|
                isViewOriginal())
 | 
						|
            : _buildScrollAuthNonTextureRender(m, c, s);
 | 
						|
        return mouseRegion(child: _buildListener(paintWidget));
 | 
						|
      } else {
 | 
						|
        return Container();
 | 
						|
      }
 | 
						|
    }
 | 
						|
  }
 | 
						|
 | 
						|
  Widget _buildScrollbarNonTextureRender(
 | 
						|
      ImageModel m, Size imageSize, double s) {
 | 
						|
    return CustomPaint(
 | 
						|
      size: imageSize,
 | 
						|
      painter: ImagePainter(image: m.image, x: 0, y: 0, scale: s),
 | 
						|
    );
 | 
						|
  }
 | 
						|
 | 
						|
  Widget _buildScrollAuthNonTextureRender(
 | 
						|
      ImageModel m, CanvasModel c, double s) {
 | 
						|
    return CustomPaint(
 | 
						|
      size: Size(c.size.width, c.size.height),
 | 
						|
      painter: ImagePainter(image: m.image, x: c.x / s, y: c.y / s, scale: s),
 | 
						|
    );
 | 
						|
  }
 | 
						|
 | 
						|
  Widget _BuildPaintTextureRender(
 | 
						|
      CanvasModel c, double s, Offset offset, Size size, bool isViewOriginal) {
 | 
						|
    final ffiModel = c.parent.target!.ffiModel;
 | 
						|
    final displays = ffiModel.pi.getCurDisplays();
 | 
						|
    final children = <Widget>[];
 | 
						|
    final rect = ffiModel.rect;
 | 
						|
    if (rect == null) {
 | 
						|
      return Container();
 | 
						|
    }
 | 
						|
    final curDisplay = ffiModel.pi.currentDisplay;
 | 
						|
    for (var i = 0; i < displays.length; i++) {
 | 
						|
      final textureId = widget.ffi.textureModel
 | 
						|
          .getTextureId(curDisplay == kAllDisplayValue ? i : curDisplay);
 | 
						|
      if (true) {
 | 
						|
        // both "textureId.value != -1" and "true" seems ok
 | 
						|
        children.add(Positioned(
 | 
						|
          left: (displays[i].x - rect.left) * s + offset.dx,
 | 
						|
          top: (displays[i].y - rect.top) * s + offset.dy,
 | 
						|
          width: displays[i].width * s,
 | 
						|
          height: displays[i].height * s,
 | 
						|
          child: Obx(() => Texture(
 | 
						|
                textureId: textureId.value,
 | 
						|
                filterQuality:
 | 
						|
                    isViewOriginal ? FilterQuality.none : FilterQuality.low,
 | 
						|
              )),
 | 
						|
        ));
 | 
						|
      }
 | 
						|
    }
 | 
						|
    return SizedBox(
 | 
						|
      width: size.width,
 | 
						|
      height: size.height,
 | 
						|
      child: Stack(children: children),
 | 
						|
    );
 | 
						|
  }
 | 
						|
 | 
						|
  MouseCursor _buildCustomCursor(BuildContext context, double scale) {
 | 
						|
    final cursor = Provider.of<CursorModel>(context);
 | 
						|
    final cache = cursor.cache ?? preDefaultCursor.cache;
 | 
						|
    return buildCursorOfCache(cursor, scale, cache);
 | 
						|
  }
 | 
						|
 | 
						|
  MouseCursor _buildDisabledCursor(BuildContext context, double scale) {
 | 
						|
    final cursor = Provider.of<CursorModel>(context);
 | 
						|
    final cache = preForbiddenCursor.cache;
 | 
						|
    return buildCursorOfCache(cursor, scale, cache);
 | 
						|
  }
 | 
						|
 | 
						|
  Widget _buildCrossScrollbarFromLayout(
 | 
						|
    BuildContext context,
 | 
						|
    Widget child,
 | 
						|
    Size layoutSize,
 | 
						|
    Size size,
 | 
						|
    ScrollController horizontal,
 | 
						|
    ScrollController vertical,
 | 
						|
  ) {
 | 
						|
    final scrollConfig = CustomMouseWheelScrollConfig(
 | 
						|
        scrollDuration: kDefaultScrollDuration,
 | 
						|
        scrollCurve: Curves.linearToEaseOut,
 | 
						|
        mouseWheelTurnsThrottleTimeMs:
 | 
						|
            kDefaultMouseWheelThrottleDuration.inMilliseconds,
 | 
						|
        scrollAmountMultiplier: kDefaultScrollAmountMultiplier);
 | 
						|
    var widget = child;
 | 
						|
    if (layoutSize.width < size.width) {
 | 
						|
      widget = ScrollConfiguration(
 | 
						|
        behavior: ScrollConfiguration.of(context).copyWith(scrollbars: false),
 | 
						|
        child: SingleChildScrollView(
 | 
						|
          controller: horizontal,
 | 
						|
          scrollDirection: Axis.horizontal,
 | 
						|
          physics: cursorOverImage.isTrue
 | 
						|
              ? const NeverScrollableScrollPhysics()
 | 
						|
              : null,
 | 
						|
          child: widget,
 | 
						|
        ),
 | 
						|
      );
 | 
						|
    } else {
 | 
						|
      widget = Row(
 | 
						|
        children: [
 | 
						|
          Container(
 | 
						|
            width: ((layoutSize.width - size.width) ~/ 2).toDouble(),
 | 
						|
          ),
 | 
						|
          widget,
 | 
						|
        ],
 | 
						|
      );
 | 
						|
    }
 | 
						|
    if (layoutSize.height < size.height) {
 | 
						|
      widget = ScrollConfiguration(
 | 
						|
        behavior: ScrollConfiguration.of(context).copyWith(scrollbars: false),
 | 
						|
        child: SingleChildScrollView(
 | 
						|
          controller: vertical,
 | 
						|
          physics: cursorOverImage.isTrue
 | 
						|
              ? const NeverScrollableScrollPhysics()
 | 
						|
              : null,
 | 
						|
          child: widget,
 | 
						|
        ),
 | 
						|
      );
 | 
						|
    } else {
 | 
						|
      widget = Column(
 | 
						|
        children: [
 | 
						|
          Container(
 | 
						|
            height: ((layoutSize.height - size.height) ~/ 2).toDouble(),
 | 
						|
          ),
 | 
						|
          widget,
 | 
						|
        ],
 | 
						|
      );
 | 
						|
    }
 | 
						|
    if (layoutSize.width < size.width) {
 | 
						|
      widget = ImprovedScrolling(
 | 
						|
        scrollController: horizontal,
 | 
						|
        enableCustomMouseWheelScrolling: cursorOverImage.isFalse,
 | 
						|
        customMouseWheelScrollConfig: scrollConfig,
 | 
						|
        child: RawScrollbar(
 | 
						|
          thickness: kScrollbarThickness,
 | 
						|
          thumbColor: Colors.grey,
 | 
						|
          controller: horizontal,
 | 
						|
          thumbVisibility: false,
 | 
						|
          trackVisibility: false,
 | 
						|
          notificationPredicate: layoutSize.height < size.height
 | 
						|
              ? (notification) => notification.depth == 1
 | 
						|
              : defaultScrollNotificationPredicate,
 | 
						|
          child: widget,
 | 
						|
        ),
 | 
						|
      );
 | 
						|
    }
 | 
						|
    if (layoutSize.height < size.height) {
 | 
						|
      widget = ImprovedScrolling(
 | 
						|
        scrollController: vertical,
 | 
						|
        enableCustomMouseWheelScrolling: cursorOverImage.isFalse,
 | 
						|
        customMouseWheelScrollConfig: scrollConfig,
 | 
						|
        child: RawScrollbar(
 | 
						|
          thickness: kScrollbarThickness,
 | 
						|
          thumbColor: Colors.grey,
 | 
						|
          controller: vertical,
 | 
						|
          thumbVisibility: false,
 | 
						|
          trackVisibility: false,
 | 
						|
          child: widget,
 | 
						|
        ),
 | 
						|
      );
 | 
						|
    }
 | 
						|
 | 
						|
    return Container(
 | 
						|
      child: widget,
 | 
						|
      width: layoutSize.width,
 | 
						|
      height: layoutSize.height,
 | 
						|
    );
 | 
						|
  }
 | 
						|
 | 
						|
  Widget _buildListener(Widget child) {
 | 
						|
    if (listenerBuilder != null) {
 | 
						|
      return listenerBuilder!(child);
 | 
						|
    } else {
 | 
						|
      return child;
 | 
						|
    }
 | 
						|
  }
 | 
						|
}
 | 
						|
 | 
						|
class CursorPaint extends StatelessWidget {
 | 
						|
  final String id;
 | 
						|
  final RxBool zoomCursor;
 | 
						|
 | 
						|
  const CursorPaint({
 | 
						|
    Key? key,
 | 
						|
    required this.id,
 | 
						|
    required this.zoomCursor,
 | 
						|
  }) : super(key: key);
 | 
						|
 | 
						|
  @override
 | 
						|
  Widget build(BuildContext context) {
 | 
						|
    final m = Provider.of<CursorModel>(context);
 | 
						|
    final c = Provider.of<CanvasModel>(context);
 | 
						|
    double hotx = m.hotx;
 | 
						|
    double hoty = m.hoty;
 | 
						|
    if (m.image == null) {
 | 
						|
      if (preDefaultCursor.image != null) {
 | 
						|
        hotx = preDefaultCursor.image!.width / 2;
 | 
						|
        hoty = preDefaultCursor.image!.height / 2;
 | 
						|
      }
 | 
						|
    }
 | 
						|
 | 
						|
    double cx = c.x;
 | 
						|
    double cy = c.y;
 | 
						|
    if (c.viewStyle.style == kRemoteViewStyleOriginal &&
 | 
						|
        c.scrollStyle == ScrollStyle.scrollbar) {
 | 
						|
      final rect = c.parent.target!.ffiModel.rect;
 | 
						|
      if (rect == null) {
 | 
						|
        // unreachable!
 | 
						|
        debugPrint('unreachable! The displays rect is null.');
 | 
						|
        return Container();
 | 
						|
      }
 | 
						|
      if (cx < 0) {
 | 
						|
        final imageWidth = rect.width * c.scale;
 | 
						|
        cx = -imageWidth * c.scrollX;
 | 
						|
      }
 | 
						|
      if (cy < 0) {
 | 
						|
        final imageHeight = rect.height * c.scale;
 | 
						|
        cy = -imageHeight * c.scrollY;
 | 
						|
      }
 | 
						|
    }
 | 
						|
 | 
						|
    double x = (m.x - hotx) * c.scale + cx;
 | 
						|
    double y = (m.y - hoty) * c.scale + cy;
 | 
						|
    double scale = 1.0;
 | 
						|
    final isViewOriginal = c.viewStyle.style == kRemoteViewStyleOriginal;
 | 
						|
    if (zoomCursor.value || isViewOriginal) {
 | 
						|
      x = m.x - hotx + cx / c.scale;
 | 
						|
      y = m.y - hoty + cy / c.scale;
 | 
						|
      scale = c.scale;
 | 
						|
    }
 | 
						|
 | 
						|
    return CustomPaint(
 | 
						|
      painter: ImagePainter(
 | 
						|
        image: m.image ?? preDefaultCursor.image,
 | 
						|
        x: x,
 | 
						|
        y: y,
 | 
						|
        scale: scale,
 | 
						|
      ),
 | 
						|
    );
 | 
						|
  }
 | 
						|
}
 |