From 6eb75e9775f2ceefa365726bdf81b9d35964b7db Mon Sep 17 00:00:00 2001
From: XY Wang <wxy11787@foxmail.com>
Date: Tue, 14 Nov 2023 18:48:04 +0800
Subject: [PATCH] [Add] Options to turn two finger scale, rotate and translate
 on and off

---
 Ink Canvas/MainWindow.xaml    |  1 +
 Ink Canvas/MainWindow.xaml.cs | 45 +++++++++++++++++++++++------------
 Ink Canvas/Settings.cs        |  4 ++++
 3 files changed, 35 insertions(+), 15 deletions(-)

diff --git a/Ink Canvas/MainWindow.xaml b/Ink Canvas/MainWindow.xaml
index 704a1109..5729d3f7 100644
--- a/Ink Canvas/MainWindow.xaml	
+++ b/Ink Canvas/MainWindow.xaml	
@@ -441,6 +441,7 @@
                         <GroupBox Header="手势">
                             <ui:SimpleStackPanel Spacing="12">
                                 <ui:ToggleSwitch Name="ToggleSwitchEnableTwoFingerZoom" Header="允许双指缩放" FontFamily="Microsoft YaHei UI" IsOn="True" OnContent="开" OffContent="关" Toggled="ToggleSwitchEnableTwoFingerZoom_Toggled"/>
+                                <ui:ToggleSwitch Name="ToggleSwitchEnableTwoFingerTranslate" Header="允许双指移动" FontFamily="Microsoft YaHei UI" IsOn="True" OnContent="开" OffContent="关" Toggled="ToggleSwitchEnableTwoFingerTranslate_Toggled"/>
                                 <ui:ToggleSwitch Name="ToggleSwitchEnableTwoFingerRotation" Header="允许双指旋转" FontFamily="Microsoft YaHei UI" OnContent="开" OffContent="关" Toggled="ToggleSwitchEnableTwoFingerRotation_Toggled"/>
                                 <TextBlock Text="允许选中墨迹后对墨迹进行双指或多指缩放操作（此设置不受“允许双指旋转”设置的影响）" TextWrapping="Wrap" Foreground="#666666"/>
                                 <ui:ToggleSwitch Name="ToggleSwitchEnableTwoFingerRotationOnSelection" Header="允许双指旋转选中的墨迹" FontFamily="Microsoft YaHei UI" OnContent="开" OffContent="关" Toggled="ToggleSwitchEnableTwoFingerRotation_Toggled"/>
diff --git a/Ink Canvas/MainWindow.xaml.cs b/Ink Canvas/MainWindow.xaml.cs
index 49a07ab7..4085e7b6 100644
--- a/Ink Canvas/MainWindow.xaml.cs	
+++ b/Ink Canvas/MainWindow.xaml.cs	
@@ -1878,9 +1878,9 @@ private void inkCanvas_PreviewTouchDown(object sender, TouchEventArgs e)
                 lastTouchDownStrokeCollection = inkCanvas.Strokes.Clone();
             }
             //设备两个及两个以上，将画笔功能关闭
-            if (dec.Count > 1 || isSingleFingerDragMode || !Settings.Gesture.IsEnableTwoFingerZoom)
+            if (dec.Count > 1 || isSingleFingerDragMode || !Settings.Gesture.IsEnableTwoFingerGesture)
             {
-                if (isInMultiTouchMode || !Settings.Gesture.IsEnableTwoFingerZoom) return;
+                if (isInMultiTouchMode || !Settings.Gesture.IsEnableTwoFingerGesture) return;
                 if (inkCanvas.EditingMode != InkCanvasEditingMode.None && inkCanvas.EditingMode != InkCanvasEditingMode.Select)
                 {
                     lastInkCanvasEditingMode = inkCanvas.EditingMode;
@@ -1936,7 +1936,7 @@ private void Main_Grid_ManipulationCompleted(object sender, ManipulationComplete
 
         private void Main_Grid_ManipulationDelta(object sender, ManipulationDeltaEventArgs e)
         {
-            if (isInMultiTouchMode || !Settings.Gesture.IsEnableTwoFingerZoom) return;
+            if (isInMultiTouchMode || !Settings.Gesture.IsEnableTwoFingerGesture) return;
             if ((dec.Count >= 2 && (Settings.PowerPointSettings.IsEnableTwoFingerGestureInPresentationMode || StackPanelPPTControls.Visibility != Visibility.Visible || StackPanelPPTButtons.Visibility == Visibility.Collapsed)) || isSingleFingerDragMode)
             {
                 ManipulationDelta md = e.DeltaManipulation;
@@ -1952,12 +1952,12 @@ private void Main_Grid_ManipulationDelta(object sender, ManipulationDeltaEventAr
                 center = m.Transform(center);  // 转换为矩阵缩放和旋转的中心点
 
                 // Update matrix to reflect translation/rotation
-                m.Translate(trans.X, trans.Y);  // 移动
+                if (Settings.Gesture.IsEnableTwoFingerTranslate)
+                    m.Translate(trans.X, trans.Y);  // 移动
                 if (Settings.Gesture.IsEnableTwoFingerRotation)
-                {
                     m.RotateAt(rotate, center.X, center.Y);  // 旋转
-                }
-                m.ScaleAt(scale.X, scale.Y, center.X, center.Y);  // 缩放
+                if (Settings.Gesture.IsEnableTwoFingerZoom)
+                    m.ScaleAt(scale.X, scale.Y, center.X, center.Y);  // 缩放
 
                 StrokeCollection strokes = inkCanvas.GetSelectedStrokes();
                 if (strokes.Count != 0)
@@ -1977,12 +1977,15 @@ private void Main_Grid_ManipulationDelta(object sender, ManipulationDeltaEventAr
                             }
                         }
 
-                        try
+                        if (Settings.Gesture.IsEnableTwoFingerZoom)
                         {
-                            stroke.DrawingAttributes.Width *= md.Scale.X;
-                            stroke.DrawingAttributes.Height *= md.Scale.Y;
+                            try
+                            {
+                                stroke.DrawingAttributes.Width *= md.Scale.X;
+                                stroke.DrawingAttributes.Height *= md.Scale.Y;
+                            }
+                            catch { }
                         }
-                        catch { }
                     }
                 }
                 else
@@ -1991,12 +1994,15 @@ private void Main_Grid_ManipulationDelta(object sender, ManipulationDeltaEventAr
                     {
                         stroke.Transform(m, false);
 
-                        try
+                        if (Settings.Gesture.IsEnableTwoFingerZoom)
                         {
-                            stroke.DrawingAttributes.Width *= md.Scale.X;
-                            stroke.DrawingAttributes.Height *= md.Scale.Y;
+                            try
+                            {
+                                stroke.DrawingAttributes.Width *= md.Scale.X;
+                                stroke.DrawingAttributes.Height *= md.Scale.Y;
+                            }
+                            catch { }
                         }
-                        catch { }
                     }
                     foreach (Circle circle in circles)
                     {
@@ -3059,6 +3065,15 @@ private void ToggleSwitchEnableTwoFingerZoom_Toggled(object sender, RoutedEventA
             SaveSettingsToFile();
         }
 
+        private void ToggleSwitchEnableTwoFingerTranslate_Toggled(object sender, RoutedEventArgs e)
+        {
+            if (!isLoaded) return;
+
+            Settings.Gesture.IsEnableTwoFingerTranslate = ToggleSwitchEnableTwoFingerTranslate.IsOn;
+
+            SaveSettingsToFile();
+        }
+
         private void ToggleSwitchEnableTwoFingerRotation_Toggled(object sender, RoutedEventArgs e)
         {
             if (!isLoaded) return;
diff --git a/Ink Canvas/Settings.cs b/Ink Canvas/Settings.cs
index 15f1ca7b..20a8e358 100644
--- a/Ink Canvas/Settings.cs	
+++ b/Ink Canvas/Settings.cs	
@@ -53,8 +53,12 @@ public enum OptionalOperation
 
     public class Gesture
     {
+        [JsonIgnore]
+        public bool IsEnableTwoFingerGesture => IsEnableTwoFingerZoom || IsEnableTwoFingerTranslate || IsEnableTwoFingerRotation;
         [JsonProperty("isEnableTwoFingerZoom")]
         public bool IsEnableTwoFingerZoom { get; set; } = true;
+        [JsonProperty("isEnableTwoFingerTranslate")]
+        public bool IsEnableTwoFingerTranslate { get; set; } = true;
         [JsonProperty("isEnableTwoFingerRotation")]
         public bool IsEnableTwoFingerRotation { get; set; } = false;
         [JsonProperty("isEnableTwoFingerRotationOnSelection")]