From 8984d16c75d661235aa8b568b7c95e2e2cb7ba7d Mon Sep 17 00:00:00 2001
From: fufesou <shuanglongchen@yeah.net>
Date: Tue, 8 Nov 2022 12:01:51 +0800
Subject: [PATCH] desktop get mouse control by big distance

Signed-off-by: fufesou <shuanglongchen@yeah.net>
---
 flutter/lib/models/input_model.dart | 19 +++++++++++++++++--
 flutter/lib/models/model.dart       |  4 ++--
 2 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/flutter/lib/models/input_model.dart b/flutter/lib/models/input_model.dart
index 280c72e79..ed7e5309a 100644
--- a/flutter/lib/models/input_model.dart
+++ b/flutter/lib/models/input_model.dart
@@ -42,6 +42,7 @@ class InputModel {
   // mouse
   final isPhysicalMouse = false.obs;
   int _lastMouseDownButtons = 0;
+  Offset last_mouse_pos = Offset.zero;
 
   get id => parent.target?.id ?? "";
 
@@ -303,6 +304,22 @@ class InputModel {
   }
 
   void handleMouse(Map<String, dynamic> evt) {
+    double x = evt['x'];
+    double y = max(0.0, evt['y']);
+    final cursorModel = parent.target!.cursorModel;
+
+    if (!cursorModel.got_mouse_control) {
+      bool self_get_control = (x - last_mouse_pos.dx).abs() > 12 ||
+          (y - last_mouse_pos.dy).abs() > 12;
+      if (self_get_control) {
+        cursorModel.got_mouse_control = true;
+      } else {
+        last_mouse_pos = ui.Offset(x, y);
+        return;
+      }
+    }
+    last_mouse_pos = ui.Offset(x, y);
+
     var type = '';
     var isMove = false;
     switch (evt['type']) {
@@ -319,8 +336,6 @@ class InputModel {
         return;
     }
     evt['type'] = type;
-    double x = evt['x'];
-    double y = max(0.0, evt['y']);
     if (isDesktop) {
       y = y - stateGlobal.tabBarHeight;
     }
diff --git a/flutter/lib/models/model.dart b/flutter/lib/models/model.dart
index d8fdca2bc..41b3d056e 100644
--- a/flutter/lib/models/model.dart
+++ b/flutter/lib/models/model.dart
@@ -740,6 +740,7 @@ class CursorModel with ChangeNotifier {
   double _hoty = 0;
   double _displayOriginX = 0;
   double _displayOriginY = 0;
+  bool got_mouse_control = true;
   String id = '';
   WeakReference<FFI> parent;
 
@@ -748,13 +749,11 @@ class CursorModel with ChangeNotifier {
   CursorData? get defaultCache => _getDefaultCache();
 
   double get x => _x - _displayOriginX;
-
   double get y => _y - _displayOriginY;
 
   Offset get offset => Offset(_x, _y);
 
   double get hotx => _hotx;
-
   double get hoty => _hoty;
 
   CursorModel(this.parent);
@@ -981,6 +980,7 @@ class CursorModel with ChangeNotifier {
 
   /// Update the cursor position.
   updateCursorPosition(Map<String, dynamic> evt, String id) async {
+    got_mouse_control = false;
     _x = double.parse(evt['x']);
     _y = double.parse(evt['y']);
     try {