首次提交：本地项目同步到Gitea

2026-01-24 08:45:54 +08:00
commit 4a6b23db69
256 changed files with 25311 additions and 0 deletions
--- a/LibShapes/Core/State/StateChanging.cs
+++ b/LibShapes/Core/State/StateChanging.cs
@@ -0,0 +1,121 @@
+using Io.Github.Kerwinxu.LibShapes.Core.State.ChangeStrategy;
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.Drawing.Drawing2D;
+using System.Linq;
+using System.Text;
+using System.Windows.Forms;
+
+namespace Io.Github.Kerwinxu.LibShapes.Core.State
+{
+    /// <summary>
+    /// 更改状态，都是选择后才有的。
+    /// </summary>
+    public class StateChanging:State
+    {
+        public StateChanging(UserControlCanvas canvas, PointF start_pointF) : base(canvas, start_pointF)
+        {
+
+        }
+        public StateChanging(UserControlCanvas canvas) : base(canvas)
+        {
+
+        }
+
+        /// <summary>
+        ///  原先的 
+        /// </summary>
+        private Shapes oldShapes;
+
+        /// <summary>
+        ///  当前选择的策略
+        /// </summary>
+        private IChangeStrategy changeStrategy;
+
+        /// <summary>
+        /// 所有的策略
+        /// </summary>
+        private IChangeStrategy[] changeStrategies = {
+            // 先4个角点
+            new ChangeStrategy.ResizeModeNorthEast(),
+            new ChangeStrategy.ResizeModeNorthWest(),
+            new ChangeStrategy.ResizeModeSorthWest(),
+            new ChangeStrategy.ResizeModeSouthEast(),
+            // 然后4个方向
+            new ChangeStrategy.ResizeModeEast(),
+            new ChangeStrategy.ResizeModeNorth(),
+            new ChangeStrategy.ResizeModeSouth(),
+            new ChangeStrategy.ResizeModeWest(),
+            // 最后是移动
+            new ChangeStrategy.MoveMode()
+        };
+
+        public override void LeftMouseDown(PointF pointF)
+        {
+            oldShapes = this.canvas.shapes.DeepClone();
+
+            // 这个首先看一下是在四面还是八方上，运算是不同的。
+            // 这里取得坐标
+            var path = new GraphicsPath();
+            path.AddRectangle(this.canvas.SelectShape.GetBounds(this.canvas.shapes.GetMatrix()));
+            if (path.PointCount == 0) return;
+            var points = path.PathPoints;
+            foreach (var item in changeStrategies)
+            {
+                if (item.isRight(points, pointF))
+                {
+                    changeStrategy = item;
+                    Cursor cursor = item.changeCursor();
+                    if (cursor != null) this.canvas.Cursor = cursor;// 更改鼠标样式。
+                    return;
+                }
+            }
+            changeStrategy = null;
+            //base.LeftMouseDown(pointF);
+        }
+
+        public override void LeftMouseMove(PointF pointF)
+        {
+            if (changeStrategy != null && this.canvas.SelectShape != null)
+            {
+                // 这里要判断是否对齐网格
+                changeStrategy.action(
+                    this.canvas.SelectShape,
+                    cantosPointToVirtualPoint(this.startPoint),
+                    cantosPointToVirtualPoint(this.canvas.gridAlign(pointF)));
+                this.canvas.Refresh();
+            }
+            //base.LeftMouseMove(pointF);
+        }
+
+
+
+        public override void LeftMouseUp(PointF pointF)
+        {
+            // 结束更改操作，然后转成选择模式
+            if (changeStrategy != null &&  this.canvas.SelectShape != null)
+            {
+                changeStrategy.action(
+                    this.canvas.SelectShape,
+                    cantosPointToVirtualPoint(this.startPoint),
+                    cantosPointToVirtualPoint(this.canvas.gridAlign(pointF)));
+                var old = this.canvas.SelectShape.DeepClone();  // 保存旧的
+                this.canvas.SelectShape.ChangeComplated();      // 更改状态
+                //
+                this.canvas.commandRecorder.addCommand(         // 发送命令
+                    new Command.CommandShapesChanged()
+                    {
+                        canvas = this.canvas,
+                        OldShapes = this.oldShapes,
+                        NewShapes = this.canvas.shapes.DeepClone()
+                    }) ;
+            }
+            // 转成
+            this.canvas.state = new StateSelected(this.canvas);
+            this.canvas.Cursor = Cursors.Default;// 换到原先的鼠标样式
+            this.canvas.Refresh();
+            //base.LeftMouseUp(pointF);
+        }
+    }
+}