using Prism.Events;
using Prism.Regions;
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;
using Txgy.EWS.Client.Common.MessageEvents;

namespace Txgy.EWS.Client.PageModule.Views
{
    /// <summary>
    /// DataOutputView.xaml 的交互逻辑
    /// </summary>
    public partial class ReportView : UserControl
    {
        public TransformGroup transGroup;
        Point _downPoint = new Point(0, 0);
        Point previousMousePoint;
        bool _isMoving = false;
        private IEventAggregator ea;

        public ReportView(IEventAggregator ea)
        {
            InitializeComponent();
            transGroup = new TransformGroup();
            transGroup.Children.Add(new ScaleTransform(2, 2));
            transGroup.Children.Add(new TranslateTransform(-200, -150));
            canvasPlan.RenderTransform = transGroup;
            this.ea = ea;
            this.ea.GetEvent<UpdateCanvasChildrenMessage>().Subscribe(u =>
            {
                canvasPlan.RenderTransform = transGroup;
            });
        }

        private void canvasMain_MouseMove(object sender, MouseEventArgs e)
        {
            if (_isMoving)
            {
                Point currentPoint = e.GetPosition(sender as Grid);

                //this.mainView.SetValue(Canvas.LeftProperty, left + (currentPoint.X - _downPoint.X));
                //this.mainView.SetValue(Canvas.TopProperty, top + (currentPoint.Y - _downPoint.Y));
                TranslateTransform tt = transGroup.Children[1] as TranslateTransform;
                this.DoImageMove(tt, currentPoint);
                e.Handled = true;
            }
        }
        private void DoImageMove(TranslateTransform transform, Point position)
        {
            //trgroup = group.Children[1] as TransformGroup;

            //Debug.Assert(group != null, "Can't find transform group from image compare panel resource");

            //TranslateTransform transform = group.Children[1] as TranslateTransform;

            transform.X += position.X - this.previousMousePoint.X;

            transform.Y += position.Y - this.previousMousePoint.Y;

            this.previousMousePoint = position;

        }
        private void canvasMain_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            _downPoint = e.GetPosition(sender as Grid);
            this.previousMousePoint = _downPoint;
            //left = double.Parse(this.mainView.GetValue(Canvas.LeftProperty).ToString());
            //top = double.Parse(this.mainView.GetValue(Canvas.TopProperty).ToString());

            _isMoving = true;
            (sender as Grid).CaptureMouse();
            e.Handled = true;
        }
        private void canvasMain_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
        {
            _isMoving = false;
            (sender as Grid).ReleaseMouseCapture();
            e.Handled = true;
        }
        private void canvasMain_MouseRightButtonDown(object sender, MouseButtonEventArgs e)
        {

        }

        private void canvasMain_MouseRightButtonUp(object sender, MouseButtonEventArgs e)
        {

        }

    }
}