* 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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| 
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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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| 
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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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| 
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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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| 
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| final SimpleWrapper<bool> _firstEnterImage = SimpleWrapper(false);
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| 
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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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| 
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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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| 
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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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| 
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|   FFI get ffi => (_lastState.value! as _RemotePageState)._ffi;
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| 
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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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| 
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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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| 
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|   var _blockableOverlayState = BlockableOverlayState();
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| 
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|   final FocusNode _rawKeyFocusNode = FocusNode(debugLabel: "rawkeyFocusNode");
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| 
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|   Function(bool)? _onEnterOrLeaveImage4Toolbar;
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| 
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|   late FFI _ffi;
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| 
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|   SessionID get sessionId => _ffi.sessionId;
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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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|   Widget getBodyForDesktop(BuildContext context) {
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|     var paints = <Widget>[
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|       MouseRegion(onEnter: (evt) {
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|         if (!isWeb) bind.hostStopSystemKeyPropagate(stopped: false);
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|       }, onExit: (evt) {
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|         if (!isWeb) bind.hostStopSystemKeyPropagate(stopped: true);
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|       }, child: LayoutBuilder(builder: (context, constraints) {
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|         Future.delayed(Duration.zero, () {
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|           Provider.of<CanvasModel>(context, listen: false).updateViewStyle();
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|         });
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|         final peerDisplay = CurrentDisplayState.find(widget.id);
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|         return Obx(
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|           () => _ffi.ffiModel.pi.isSet.isFalse
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|               ? Container(color: Colors.transparent)
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|               : Obx(() {
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|                   _ffi.textureModel.updateCurrentDisplay(peerDisplay.value);
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|                   return ImagePaint(
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|                     id: widget.id,
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|                     zoomCursor: _zoomCursor,
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|                     cursorOverImage: _cursorOverImage,
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|                     keyboardEnabled: _keyboardEnabled,
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|                     remoteCursorMoved: _remoteCursorMoved,
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|                     listenerBuilder: (child) => _buildRawTouchAndPointerRegion(
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|                         child, enterView, leaveView),
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|                     ffi: _ffi,
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|                   );
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|                 }),
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|         );
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|       }))
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|     ];
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| 
 | |
|     if (!_ffi.canvasModel.cursorEmbedded) {
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|       paints.add(Obx(() => Offstage(
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|           offstage: _showRemoteCursor.isFalse || _remoteCursorMoved.isFalse,
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|           child: CursorPaint(
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|             id: widget.id,
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|             zoomCursor: _zoomCursor,
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|           ))));
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|     }
 | |
|     paints.add(
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|       Positioned(
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|         top: 10,
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|         right: 10,
 | |
|         child: _buildRawTouchAndPointerRegion(
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|             QualityMonitor(_ffi.qualityMonitorModel), null, null),
 | |
|       ),
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|     );
 | |
|     return Stack(
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|       children: paints,
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|     );
 | |
|   }
 | |
| 
 | |
|   @override
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|   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(
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|       {Key? key,
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|       required this.ffi,
 | |
|       required this.id,
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|       required this.zoomCursor,
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|       required this.cursorOverImage,
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|       required this.keyboardEnabled,
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|       required this.remoteCursorMoved,
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|       this.listenerBuilder})
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|       : 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,
 | |
|       ),
 | |
|     );
 | |
|   }
 | |
| }
 |