添加项目文件。

MetroGauges/Controls/DrawTools/RectangleTool.cs

@@ -0,0 +1,127 @@
+using MetroGauges.Controls.DrawTools;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Shapes;
+
+namespace MetroGauges.Controls
+{
+    public class RectangleTool : DrawToolBase
+    {
+        /// <summary>
+        /// 是否选择工具
+        /// </summary>
+        public bool IsSelecedTool { get; set; }
+
+        Rectangle currentRect = new Rectangle();
+        bool isMouseDown = false;
+
+        public RectangleTool(DesignControl canvas) : base(canvas)
+        {
+            IsStartDraw = true;
+        }
+
+        public override void MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
+        {
+            isMouseDown = true;
+            if (IsStartDraw)
+            {
+                this.DrawDesign.DisabledMove = true;
+
+                Point mousePosition = Mouse.GetPosition(this.DrawDesign.canvasDesign);
+                currentRect.Stroke = new SolidColorBrush(Colors.White);
+                currentRect.StrokeThickness = 1;
+
+                Canvas.SetLeft(currentRect, mousePosition.X);
+                Canvas.SetTop(currentRect, mousePosition.Y);
+
+                currentRect.DataContext = new Point() { X = mousePosition.X, Y = mousePosition.Y };
+
+                this.AddShap(currentRect);
+
+                
+            }
+        }
+
+        public override void MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
+        {
+            isMouseDown = false;
+            IsStartDraw = false;
+            this.DrawDesign.DisabledMove = false;
+            if (currentRect.Width == 0 || currentRect.Height == 0)
+            {
+                this.DrawDesign.canvasDesign.Children.Remove(currentRect);
+            }
+            else
+            {
+                if (IsSelecedTool)
+                {
+                    this.DrawDesign.canvasDesign.Children.Remove(currentRect);
+                    this.DrawDesign.DrawShaps.Remove(currentRect);
+
+                    
+                }
+            }
+        }
+
+        public override void MouseMove(object sender, MouseEventArgs e)
+        {
+            if (IsStartDraw && isMouseDown)
+            {
+                Point mousePosition = Mouse.GetPosition(this.DrawDesign.canvasDesign);
+                Point sourePoint = (Point)currentRect.DataContext;
+
+                currentRect.Width = Math.Abs(mousePosition.X - sourePoint.X);
+                currentRect.Height = Math.Abs(mousePosition.Y - sourePoint.Y);
+
+                if (mousePosition.X - sourePoint.X < 0) // 左边
+                {
+                    if (mousePosition.Y - sourePoint.Y < 0) //上面
+                    {
+                        Canvas.SetLeft(currentRect, sourePoint.X - currentRect.Width);
+                        Canvas.SetTop(currentRect, sourePoint.Y + (mousePosition.Y - sourePoint.Y));
+                    }
+                    else //下面
+                    {
+                        Canvas.SetLeft(currentRect, sourePoint.X - currentRect.Width);
+                    }
+                }
+                else // 右边
+                {
+                    if (mousePosition.Y - sourePoint.Y < 0) //上面
+                    {
+                        Canvas.SetTop(currentRect, sourePoint.Y+ (mousePosition.Y- sourePoint.Y));
+                    }
+                    else //下面
+                    {
+                        
+                    }
+                }
+                
+               
+            }
+        }
+
+        public override void MouseRightButtonUp(object sender, MouseButtonEventArgs e)
+        {
+            
+        }
+
+        public override void m_Root_MouseRightButtonDown(object sender, MouseButtonEventArgs e)
+        {
+            
+        }
+
+        public override void Highlight(FrameworkElement shape)
+        {
+            this.DrawDesign.CrrentDrawTool = this;
+            base.Highlight(shape);
+        }
+    }
+}