using AForge.Video.DirectShow;
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.Shapes;

namespace XHZB.Desktop
{
    /// <summary>
    /// CameraWindow.xaml 的交互逻辑
    /// </summary>
    public partial class CameraWindow : Window
    {
        public CameraWindow()
        {
            InitializeComponent();
            FilterInfoCollection videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);
            if(videoDevices.Count>0)
            {
                var videoDevice = new VideoCaptureDevice(videoDevices[0].MonikerString);
                videoDevice.VideoResolution = videoDevice.VideoCapabilities[0];
                player.VideoSource = videoDevice;
                player.Start();
            }
        }

        #region 窗体移动
        /// <summary>
        /// 记录初始点
        /// </summary>
        Point mPoint = new Point(0,0);
        bool IsStretching = false;
        int Position = 0;
        private void player_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
        {
            mPoint = new Point(e.X, e.Y);
        }

        private void player_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
        {
            if (e.Button == System.Windows.Forms.MouseButtons.Left)
            {
                if (IsStretching)
                {
                    switch (Position)
                    {
                        case 1:
                            this.Left = this.Left - (mPoint.X - e.X);
                            this.Top = this.Top - (mPoint.Y - e.Y);
                            this.Width = this.Width + (mPoint.X - e.X);
                            this.Height = this.Height + (mPoint.Y - e.Y);
                            break;
                        case 2:
                            this.Left = this.Left - (mPoint.X - e.X);
                            this.Width = this.Width + (mPoint.X - e.X);
                            this.Height = this.Height - (mPoint.Y - e.Y);
                            mPoint = new Point(mPoint.X, e.Y);
                            break;
                        case 3:
                            this.Top = this.Top - (mPoint.Y - e.Y);
                            this.Width = this.Width - (mPoint.X - e.X);
                            this.Height = this.Height + (mPoint.Y - e.Y);
                            mPoint = new Point(e.X, mPoint.Y);
                            break;
                        case 4:
                            this.Width = this.Width - (mPoint.X - e.X);
                            this.Height = this.Height - (mPoint.Y - e.Y);
                            mPoint = new Point(e.X, e.Y);
                            break;
                        default:
                            break;
                    }
                }
                else
                {
                    this.Left = this.Left - (mPoint.X - e.X);
                    this.Top = this.Top - (mPoint.Y - e.Y);
                }
            }
            if (e.Button == System.Windows.Forms.MouseButtons.None)
            {
                if (e.X <= 5 && e.Y <= 5)//左上
                {
                    IsStretching = true;
                    Position = 1;
                    wfhCamera.Cursor = Cursors.SizeNWSE;
                }
                else if (e.X <= 5 && e.Y >= wfhCamera.ActualHeight - 5)//左下
                {
                    IsStretching = true;
                    Position = 2;
                    wfhCamera.Cursor = Cursors.SizeNESW;
                }
                else if (e.X >= wfhCamera.ActualWidth - 5 && e.Y <= 5)//右上
                {
                    IsStretching = true;
                    Position = 3;
                    wfhCamera.Cursor = Cursors.SizeNESW;
                }
                else if (e.X >= wfhCamera.ActualWidth - 5 && e.Y >= wfhCamera.ActualHeight - 5)//右下
                {
                    IsStretching = true;
                    Position = 4;
                    wfhCamera.Cursor = Cursors.SizeNWSE;
                }
                else
                {
                    IsStretching = false;
                    wfhCamera.Cursor = Cursors.SizeAll;
                }

            }

        }
        #endregion

    }
}