/// <summary>
/// 画图完成事件
/// </summary>
/// <param name="geometry">画上去的图形</param>
private void DrawingLayer_DrawCompleted(Geometry geometry)
{
this.drawingLayer.Visible = false;
this.drawingLayer.DrawingType = DrawingCanavsGeometries.None;
if (this.selectedLayer == null)
{
this.selectedLayer = this.layers.FirstOrDefault();
}
this.selectedLayer.AddGeometry(geometry);
}
/// <summary>
/// 创建一个空的图层并返回
/// </summary>
/// <returns></returns>
private GeometryLayer AddGeometryLayer()
{
GeometryLayer layer = new GeometryLayer()
{
Options = this.Options,
};
this.Controls.Add(layer);
this.layers.Add(layer);
layer.Dock = DockStyle.Fill;
return(layer);
}
private void InitializeUserControl()
{
this.Options = new DrawingOptionsGDI()
{
PolygonBackgroundColor = Color.Orange,
PolygonBroderColor = Color.Green,
PolygonBorderWidth = 3
};
// 所有图层
this.layers = new ObservableCollection <GeometryLayer>();
// 初始化图层
this.selectedLayer = this.AddGeometryLayer();
// 用来画图的Panel
this.InitializeDrawingLayer();
}