107 lines
3.5 KiB
C#
107 lines
3.5 KiB
C#
using Io.Github.Kerwinxu.LibShapes.Core.Shape;
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using Io.Github.Kerwinxu.LibShapes.Core.State.ChangeStrategy;
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Drawing;
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using System.Linq;
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using System.Text;
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namespace Io.Github.Kerwinxu.LibShapes.Core.State
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{
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/// <summary>
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/// 创建状态。
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/// </summary>
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public class StateCreate:State
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{
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public StateCreate(UserControlCanvas canvas, PointF start_pointF) : base(canvas, start_pointF)
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{
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}
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public StateCreate(UserControlCanvas canvas) : base(canvas)
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{
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}
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private Shapes oldShapes;
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public ShapeEle shape { get; set; }
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public StateCreate(UserControlCanvas canvas, ShapeEle shape):base(canvas)
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{
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this.shape = shape; // 保存要创建的图形
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}
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private IChangeStrategy strategy = new ResizeModeSouthEast(); // 更改的策略
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private ShapeEle newshape; // 建立的图形。
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public override void LeftMouseDown(PointF pointF)
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{
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oldShapes = this.canvas.shapes.DeepClone();
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// 这里先创建一个拷贝
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newshape = shape.DeepClone();
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// 判断是否需要对齐
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startPoint = this.canvas.gridAlign(pointF);
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// 这里的坐标要转换成虚拟中的坐标
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var point3 = cantosPointToVirtualPoint(startPoint);
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// 这个x和y就有了
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newshape.X = point3.X;
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newshape.Y = point3.Y;
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// 然后计算id
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newshape.ID = this.canvas.shapes.getNextId();
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Trace.WriteLine($"增加了一个新的图形，id:{newshape.ID}");
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// 然后添加到图形中
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this.canvas.addShape(newshape);
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// 刷新
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this.canvas.Refresh();
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//base.LeftMouseDown(pointF);
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}
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public override void LeftMouseMove(PointF pointF)
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{
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// 判断是否需要对齐
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var point2 = cantosPointToVirtualPoint(this.canvas.gridAlign(pointF));
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strategy.action(newshape, cantosPointToVirtualPoint(startPoint), point2);
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// 刷新
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this.canvas.Refresh();
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base.LeftMouseMove(pointF);
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}
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public override void LeftMouseUp(PointF pointF)
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{
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// 这里有一个特殊的情况，就是宽和高都是0的情况下，会死机
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var point2 = cantosPointToVirtualPoint(this.canvas.gridAlign(pointF));
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strategy.action(newshape, cantosPointToVirtualPoint(startPoint), point2);
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newshape.ChangeComplated();
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if (newshape.Width == 0 && newshape.Height == 0)
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{
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this.canvas.deleteShapes(newshape);
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}
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else
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{
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// 更改成选择模式
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this.canvas.state = new StateSelected(this.canvas);
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// 需要发送命令
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this.canvas.commandRecorder.addCommand(
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new Command.CommandShapesChanged()
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{
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canvas=this.canvas,
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OldShapes = this.oldShapes,
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NewShapes = this.canvas.shapes.DeepClone()
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}
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) ;
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// 这里还是发出改变通知
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this.canvas.changeSelect(newshape);
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}
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//base.LeftMouseUp(pointF);
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// 刷新
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this.canvas.Refresh();
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}
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}
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}
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