using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows.Input;
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using System.Windows.Media;
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using System.Windows;
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namespace XHandler.Controls.DrawCanvas
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{
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/// <summary>
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/// 画图几何图形基类
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/// </summary>
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public abstract class DrawGeometryBase : DrawingVisual, IDrawTool
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{
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public int ID = 1;
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public DrawGeometryBase(DrawingCanvas drawingCanvas)
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{
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this.DrawingCanvas = drawingCanvas;
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this.ID = DrawingCanvas.ID;
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}
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#region 鼠标键盘事件
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public virtual Boolean OnKeyDown(Key key) => false;
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public virtual Boolean OnKeyUp(Key key) => false;
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public virtual Boolean OnTouchDown(Int32 touchId, Point point) => false;
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public virtual Boolean OnTouchEnter(Point point) => false;
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public virtual Boolean OnTouchLeave(Point point) => false;
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public virtual Boolean OnTouchMove(Point point) => false;
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public virtual Boolean OnTouchUp(Point point) => false;
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#endregion
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#region 绘图事件
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public virtual void Draw()
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{
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var dc = this.RenderOpen();
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dc.DrawGeometry(new SolidColorBrush(Color.FromArgb(0x20, 0x00, 0x00, 0x00)), pen, geometry);
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//dc.DrawGeometry(new SolidColorBrush(Color.FromArgb(0, 162, 232, 0)), pen, geometry);
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//dc
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dc.Close();
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}
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public virtual Boolean Erase(Geometry erase)
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{
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geometry = Geometry.Combine(geometry, erase, GeometryCombineMode.Exclude, null);
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if (geometry.IsEmpty())
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return true;
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Draw();
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return false;
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}
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public virtual Boolean Select(Point point)
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{
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return geometry.FillContains(point);
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}
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public virtual Boolean Select(Geometry select)
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{
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return !Geometry.Combine(geometry, select, GeometryCombineMode.Intersect, null).IsEmpty();
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}
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public virtual Rect Selected()
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{
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if (Mode == 1)
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return selectRect;
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Mode = 1;
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var dc = this.RenderOpen();
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dc.DrawGeometry(pen.Brush, null, geometry);
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selectRect = GetRenderBounds();
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dc.DrawRectangle(Brushes.Transparent, this.DrawingCanvas.SelectBackgroundPen, selectRect);
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dc.DrawRectangle(null, this.DrawingCanvas.SelectPen, selectRect);
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dc.Close();
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return selectRect;
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}
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public virtual void Unselected()
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{
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if (Mode == 0)
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return;
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Mode = 0;
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Draw();
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}
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protected virtual Rect GetRenderBounds()
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{
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return geometry.GetRenderBounds(this.DrawingCanvas.SelectPen);
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}
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public virtual void Move(Double dx, Double dy)
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{
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if (geometry.Transform == null)
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geometry.Transform = new TranslateTransform(dx, dy);
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else
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{
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var translate = (TranslateTransform)geometry.Transform;
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translate.X += dx;
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translate.Y += dy;
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}
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if (Mode == 1)
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{
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Mode = 0;
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Selected();
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}
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else
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Draw();
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}
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public virtual void Edit() { }
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#endregion
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#region 序列化
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public virtual DrawGeometrySerializerBase ToSerializer() => null;
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public virtual void DeserializeFrom(DrawGeometrySerializerBase serializer) { }
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#endregion
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#region 属性
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public Int32 TouchId { get; protected set; }
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public Boolean CanTouchEnter { get; protected set; }
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public Boolean CanTouchLeave { get; protected set; }
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public Boolean CanTouchDown { get; protected set; }
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public Boolean CanTouchMove { get; protected set; }
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public Boolean CanTouchUp { get; protected set; }
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public Boolean CanKeyDown { get; protected set; }
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public Boolean CanKeyUp { get; protected set; }
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public Boolean IsFinish { get; protected set; }
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public DrawToolType DrawingToolType { get; protected set; }
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public Boolean CanEdit { get; protected set; }
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public Int32 Mode { get; protected set; }
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#endregion
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#region 字段
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public DrawingCanvas DrawingCanvas;
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protected Geometry geometry;
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protected PathGeometry pathGeometry => (PathGeometry)geometry;
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protected Pen pen;
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protected Rect selectRect;
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#endregion
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}
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}
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