using netDxf;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace MetroGauges.Controls
{
    /// <summary>
    /// GeoWidget.xaml 的交互逻辑
    /// </summary>
    public partial class GeoWidget : UserControl
    {
        private string m_BlockPath;
        private DesignControl m_designCtrl;
        public DesignControl DesignCtrl {

            get
            {
                return m_designCtrl;
            }
        }

        public string BlockName { get; set; }

        

        public GeoWidget()
        {
            InitializeComponent();
            this.MouseLeftButtonUp += GeoWidget_MouseLeftButtonUp;  //拦截，不拦截会影响到画布拖动。
            this.Loaded += GeoWidget_Loaded;

            m_BlockPath = AppDomain.CurrentDomain.BaseDirectory + "Blocks\\";
        }

        private void GeoWidget_Loaded(object sender, RoutedEventArgs e)
        {
            m_designCtrl = this.geoThumb.Template.FindName("designCtrl", this.geoThumb) as DesignControl;
            m_designCtrl.CancelMove = true;
            m_designCtrl.ScaleVisble = false;

            //LoadBlockData();
        }


        private void GeoWidget_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
        {
            e.Handled = true;
        }


        public void LoadBlockData()
        {
            DxfDocument dxf = DxfDocument.Load(m_BlockPath + BlockName+".dxf");
            if (dxf.Blocks.Count > 0 && dxf.Blocks.Contains(BlockName))
            {
                netDxf.Blocks.Block block = dxf.Blocks[BlockName];
                foreach (netDxf.Entities.EntityObject item in block.Entities)
                {
                    switch (item.Type.ToString())
                    {
                        case "Line":
                            AddLine(item);
                            break;
                        case "Polyline":
                        case "LightWeightPolyline":
                            AddPolyline(item);
                            break;
                    }
                }
            }
            else
            {
                MessageBox.Show("找不到块数据", "错误");
            }
        }

        public void AddLine(netDxf.Entities.EntityObject line)
        {
            double xyRate = this.m_designCtrl.ScaleRale;
            Line drawline = new Line();
            netDxf.Entities.Line dataLine = line as netDxf.Entities.Line;
            drawline.X1 = dataLine.StartPoint.X / xyRate;
            drawline.Y1 = -dataLine.StartPoint.Y / xyRate;

            drawline.X2 = dataLine.EndPoint.X / xyRate;
            drawline.Y2 = -dataLine.EndPoint.Y / xyRate;

            drawline.Stroke = Brushes.White;
            drawline.StrokeThickness = 1;
            m_designCtrl.canvasDesign.Children.Add(drawline);
            
        }
        public void AddPolyline(netDxf.Entities.EntityObject line)
        {
            double xyRate = this.m_designCtrl.ScaleRale;
            PointCollection ptcol = new PointCollection();
            switch (line.Type.ToString())
            {
                case "Polyline":
                    netDxf.Entities.Polyline polyline = line as netDxf.Entities.Polyline;
                    foreach (netDxf.Entities.PolylineVertex item in polyline.Vertexes)
                    {
                        ptcol.Add(new Point() { X = item.Location.X / xyRate, Y = -item.Location.Y / xyRate });
                    }
                    break;
                case "LightWeightPolyline":
                    netDxf.Entities.LwPolyline lwline = line as netDxf.Entities.LwPolyline;
                    foreach (var item in lwline.Vertexes)
                    {
                        ptcol.Add(new Point() { X = item.Location.X / xyRate, Y = -item.Location.Y / xyRate });
                    }
                    if (lwline.IsClosed)
                    {
                        Vector2 last = lwline.Vertexes[0].Location;
                        ptcol.Add(new Point() { X = last.X / xyRate, Y = -last.Y / xyRate });
                    }
                    break;
            }
            Polyline pl = new Polyline
            {
                Stroke = Brushes.White,
                StrokeThickness = 1,
                Points = ptcol,
            };
            
            this.m_designCtrl.canvasDesign.Children.Add(pl);
        }
        public void AddCircle(Ellipse circle)
        {
            m_designCtrl.canvasDesign.Children.Add(circle);
        }
        public void AddRectangle(Rectangle rectangle)
        {
            m_designCtrl.canvasDesign.Children.Add(rectangle);
        }
        public  void AddText1(String text)
        {
            TextBlock textBlock = new TextBlock();
            textBlock.Text = text;
            textBlock.Foreground = Brushes.White;
            m_designCtrl.canvasDesign.Children.Add(textBlock);
        }
        /// <summary>
        /// 移动控件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void geoThumb_DragDelta(object sender, System.Windows.Controls.Primitives.DragDeltaEventArgs e)
        {
            double X = Canvas.GetLeft(this);
            double Y = Canvas.GetTop(this);
            Canvas.SetLeft(this, X + e.HorizontalChange);
            Canvas.SetTop(this, Y + e.VerticalChange);
            //isMoved = true;
        }
    }
}