62 lines
1.8 KiB
C#
62 lines
1.8 KiB
C#
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using System;
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using System.Collections.Generic;
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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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/// 画布整体的移动
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/// </summary>
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public class StateCanvasMove:State
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{
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public StateCanvasMove(UserControlCanvas canvas, PointF start_pointF) : base(canvas, start_pointF)
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{
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}
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public StateCanvasMove(UserControlCanvas canvas) : base(canvas)
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{
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}
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// 移动的话，我这个类会保存原先的偏移
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private float old_offsetX, old_offsetY;
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private Shapes oldShapes;
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public override void LeftMouseDown(PointF pointF)
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{
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this.oldShapes = this.canvas.shapes.DeepClone();
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// 保存偏移
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old_offsetX = this.canvas.shapes.pointTransform.OffsetX;
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old_offsetY = this.canvas.shapes.pointTransform.OffsetY;
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startPoint = pointF;
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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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float diffx = pointF.X - startPoint.X;
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float diffy = pointF.Y - startPoint.Y;
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// 然后修改偏移
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this.canvas.shapes.pointTransform.OffsetX = old_offsetX + diffx;
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this.canvas.shapes.pointTransform.OffsetY = old_offsetY + diffy;
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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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// 保存命令，
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this.canvas.commandRecorder.addCommand(new Command.CommandShapesChanged() {
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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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//base.LeftMouseUp(pointF);
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}
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}
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}
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