using System.ComponentModel;
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using System.Windows;
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using System.Windows.Media;
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using static Bro.Common.Helper.EnumHelper;
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namespace Bro.Common.ImageCanvas.Shapes
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{
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public abstract class ShapeElementBase : DrawingVisual, INotifyPropertyChanged
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{
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public event PropertyChangedEventHandler PropertyChanged;
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public int Index { get; set; }
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#region Draw
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public void Draw()
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{
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if (Pen == null)
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{
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SetNormalPen();
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}
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//Application.Current.Dispatcher.Invoke(() =>
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//{
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using (DrawingContext dc = RenderOpen())
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{
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DrawShape(dc);
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}
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//});
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}
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protected abstract void DrawShape(DrawingContext dc);
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#endregion
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#region 画笔相关
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#region 绘图画笔
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private Pen pen = null;
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public Pen Pen
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{
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get => pen;
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set => SetAndDraw(ref pen, value);
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}
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public virtual void SetNormalPen()
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{
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Pen = new Pen(new SolidColorBrush(Colors.Black), 3);
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}
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public virtual void SetHoverPen()
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{
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Pen = new Pen(new SolidColorBrush(Colors.BlueViolet), 10);
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}
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public virtual void SetInSidePen()
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{
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Pen = new Pen(new SolidColorBrush(Colors.YellowGreen), 6);
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}
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public virtual void SetSelectedPen()
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{
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Pen = new Pen(new SolidColorBrush(Colors.Pink), 10);
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}
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protected virtual void SetMeasureDoneOKPen()
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{
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Pen = new Pen(new SolidColorBrush(Colors.Green), 6);
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}
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protected virtual void SetMeasureDoneNGPen()
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{
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Pen = new Pen(new SolidColorBrush(Colors.Red), 6);
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}
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protected virtual void SetMeasuringPen()
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{
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Pen = new Pen(new SolidColorBrush(Colors.Yellow), 3);
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}
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#endregion
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#region 文字画笔
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/// <summary>
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/// 字体大小
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/// </summary>
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public virtual float FontSize { get; set; } = 30;
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/// <summary>
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/// 字体和基元的距离
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/// </summary>
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public virtual int FontDistance { get; set; } = 5;
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public virtual bool IsShowRemark { get; set; } = true;
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public string Text { get; set; }
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public virtual Typeface Typeface { get; set; } = new Typeface(new FontFamily("宋体"), FontStyles.Normal, FontWeights.Normal, FontStretches.Normal);
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#endregion
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#endregion
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#region 鼠标位置判断
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protected abstract bool IsMouseInSide(Point point);
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protected abstract bool IsMouseHover(Point point);
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#endregion
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#region 状态
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private ElementState state = ElementState.New;
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public ElementState State
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{
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get
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{
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return state;
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}
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set
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{
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if (state != value)
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{
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state = value;
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switch (state)
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{
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case ElementState.MouseHover:
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SetHoverPen();
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break;
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case ElementState.MouseInSide:
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SetInSidePen();
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break;
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case ElementState.Selected:
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SetSelectedPen();
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break;
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case ElementState.Normal:
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SetNormalPen();
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break;
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case ElementState.Measuring:
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SetMeasuringPen();
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break;
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case ElementState.MeasureDoneOK:
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SetMeasureDoneOKPen();
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break;
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case ElementState.MeasureDoneNG:
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SetMeasureDoneNGPen();
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break;
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}
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}
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}
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}
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/// <summary>
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/// 是否是运行模式
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/// </summary>
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[Browsable(false)]
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public RunMode RunMode { get; set; } = RunMode.SetMode;
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public virtual void CheckMouseState(Point point)
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{
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if (State != ElementState.Selected)
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{
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if (IsMouseInSide(point))
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{
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State = ElementState.MouseInSide;
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}
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else if (IsMouseHover(point))
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{
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State = ElementState.MouseHover;
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}
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else
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{
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State = ElementState.Normal;
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}
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}
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}
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#endregion
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#region 变化导致重绘事件
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protected void SetAndDraw<T>(ref T field, T value)
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{
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if (value != null)
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{
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if (!value.Equals(field))
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{
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field = value;
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Draw();
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}
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}
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}
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#endregion
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}
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}
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