LIBMAS/ImageCollect/CameraComponent/FrameCameraSet1Control.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using PaintDotNet.Base.SettingModel;
using TUCamera;
using TUCAMAPI;
using System.Runtime.InteropServices;

namespace PaintDotNet.ImageCollect.CameraComponent
{
    public partial class FrameCameraSet1Control : UserControl
    {
        private TUCamera.TUCamera m_camera;
        private CameraParamModel m_cameraParamModel;
        private bool m_use;

        private Point m_startP; //鼠标按下时坐标
        private bool m_blnDraw = false;
        private Rectangle m_rect;//初始设置一个拖拽的显示框
        private SolidBrush m_brush = new SolidBrush(Color.Black);
        private int m_handle = 0;
        private int m_targetX = 0;   // 起始点X坐标  对应分辨率
        private int m_targetY = 0;   // 起始点Y坐标  对应分辨率
        private int m_targetWidth = 320; //显示框的宽度 对应分辨率
        private int m_targetHeight = 200; //显示框的高度 对应分辨率
        private int m_tempX = 0;
        private int m_tempY = 0;
        private int m_tempW = 0;
        private int m_tempH = 0;

        private TUCameraIFrameProcess m_process = null;
        private Size m_resolution; // 分辨率

        private bool m_isWaiting;
        private void InitializeLanguageText()
        {
            this.groupBox3.Text = PdnResources.GetString("Menu.Setting.Text");
            this.quanfuButton.Text = PdnResources.GetString("Menu.Fullframe.text");
            this.zhongxinButton.Text = PdnResources.GetString("Menu.center.text");
            this.label4.Text = PdnResources.GetString("Menu.Imagesize.text") + ":";
            this.label1.Text = PdnResources.GetString("Menu.Startingcoordinates.text") + ":";
            this.shuaxinButton.Text = PdnResources.GetString("Menu.Refreshthumbnail.text");
            this.groupBox2.Text = PdnResources.GetString("Menu.Resolution.text");

        }
        public FrameCameraSet1Control(CameraParamModel model, bool use)
        {
            InitializeComponent();
            InitializeLanguageText();
            m_use = use;
            m_camera = TUCameraManager.GetInstance().GetCurrentCamera();
            m_cameraParamModel = model;
            
            InitializeControlData();
            //InitializeData();
        }

        public void ReLoad(CameraParamModel model, bool use)
        {
            m_cameraParamModel = model;
            m_use = use;
            InitializeControlData();
            InitializeData();
        }

        private void InitializeControlData()
        {
            cmbResolution.Items.Clear();
            List<string> resolutions = this.m_camera.GetResolutionRange();
            for (int i = 0; i < resolutions.Count; i++)
            {
                cmbResolution.Items.Add(resolutions[i]);
            }
            if (resolutions.Count > 0)
            {
                cmbResolution.SelectedIndex = m_cameraParamModel.parame.Resolution;
            }
            
            //
            this.zuobiaoXTextBox.Text = m_cameraParamModel.parame.previewRectX.ToString();
            this.zuobiaoYTextBox.Text = m_cameraParamModel.parame.previewRectY.ToString();

            this.chicunWTextBox.Text = m_cameraParamModel.parame.previewRectW.ToString();
            this.chicunHTextBox.Text = m_cameraParamModel.parame.previewRectH.ToString();
        }
        /// <summary>
        /// 绑定样式数据
        /// </summary>
        private void InitializeData()
        {
            m_targetX = this.m_cameraParamModel.parame.previewRectX;
            m_targetY = this.m_cameraParamModel.parame.previewRectY;
            m_targetWidth = this.m_cameraParamModel.parame.previewRectW;
            m_targetHeight = this.m_cameraParamModel.parame.previewRectH;

            SetROI();

            m_rect = new Rectangle();
            drawingImg();

            if (m_resolution.Width > 0 && m_resolution.Height > 0)
            {
                this.pictureBox1.Height = (this.pictureBox1.Width * m_resolution.Height) / m_resolution.Width;
                m_rect.X = this.m_cameraParamModel.parame.previewRectX * this.pictureBox1.Width / m_resolution.Width;
                m_rect.Y = this.m_cameraParamModel.parame.previewRectY * this.pictureBox1.Height / m_resolution.Height;
                m_rect.Width = this.m_cameraParamModel.parame.previewRectW * this.pictureBox1.Width / m_resolution.Width;
                m_rect.Height = this.m_cameraParamModel.parame.previewRectH * this.pictureBox1.Height / m_resolution.Height;
            }
            else
            {
                m_resolution.Width = pictureBox1.Width;
                m_resolution.Height = pictureBox1.Height;

                m_rect.X = 0;
                m_rect.Y = 0;
                m_rect.Width = this.pictureBox1.Width;
                m_rect.Height = this.pictureBox1.Height;
            }

        }

        private void zhongxinButton_Click(object sender, EventArgs e)
        {
            if (zhongxinButton.Text.Equals(PdnResources.GetString("Menu.center.text")))
            {
                zhongxinButton.Text = PdnResources.GetString("Menu.Start.text");
                int X = pictureBox1.Width / 2 - m_rect.Width / 2;
                int Y = pictureBox1.Height / 2 - m_rect.Height / 2;


                m_rect.X = X;
                m_rect.Y = Y;

                m_targetX = m_rect.X * m_resolution.Width / this.pictureBox1.Width;
                m_targetY = m_rect.Y * m_resolution.Height / this.pictureBox1.Height;

            }
            else
            {
                zhongxinButton.Text = PdnResources.GetString("Menu.center.text");
                int X = 0;
                int Y = 0;


                m_rect.X = X;
                m_rect.Y = Y;

                m_targetX = m_rect.X * m_resolution.Width / this.pictureBox1.Width;
                m_targetY = m_rect.Y * m_resolution.Height / this.pictureBox1.Height;
            }

            SetROI();

            this.pictureBox1.Refresh();
        }

        private void quanfuButton_Click(object sender, EventArgs e)
        {
            if (this.quanfuButton.Text.Equals(PdnResources.GetString("Menu.Lasttime.text")))
            {
                this.quanfuButton.Text = PdnResources.GetString("Menu.Fullframe.text");

                if (m_resolution.Width>0 && m_resolution.Height>0)
                {
                    m_rect.X = m_tempX * this.pictureBox1.Width / m_resolution.Width;
                    m_rect.Y = m_tempY * this.pictureBox1.Height / m_resolution.Height;
                    m_rect.Width = m_tempW * this.pictureBox1.Width / m_resolution.Width;
                    m_rect.Height = m_tempH * this.pictureBox1.Height / m_resolution.Height;

                    m_targetX = m_tempX;
                    m_targetY = m_tempY;
                    m_targetWidth = m_tempW;
                    m_targetHeight = m_tempH;
                }
            }
            else
            {
                this.quanfuButton.Text = PdnResources.GetString("Menu.Lasttime.text");

                m_tempX = m_targetX;
                m_tempY = m_targetY;
                m_tempW = m_targetWidth;
                m_tempH = m_targetHeight;

                int X = 0;
                int Y = 0;
                m_rect.X = X;
                m_rect.Y = Y;
                m_rect.Width = this.pictureBox1.Width;
                m_rect.Height = this.pictureBox1.Height;


                m_targetX = 0;
                m_targetY = 0;
                m_targetWidth = m_resolution.Width;
                m_targetHeight = m_resolution.Height;

            }

            SetROI();

            this.pictureBox1.Refresh();

        }

        private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
        {
            m_handle = HitTest(e.Location);
            if (m_handle < 0)
            {
                if (m_rect.Contains(e.Location))//判断鼠标按下的坐标是否在红框中，确定是否拖动的红框 
                {
                    m_handle = 9;

                }
            }

            this.Cursor = GetHandleCursor(m_handle);

            m_startP = e.Location;
            Invalidate();

            m_blnDraw = true;
        }

        private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
        {
            if (m_handle > 0 && m_blnDraw)
            {
                if (e.Button != MouseButtons.Left)//判断是否按下左键
                    return;

                MoveHandleTo(e.Location, m_handle);
            }

        }

        private void pictureBox1_MouseUp(object sender, MouseEventArgs e)
        {
            m_blnDraw = false; //结束绘制
            this.Cursor = Cursors.Default;

            SetROI();
            this.pictureBox1.Refresh();
        }

        public Rectangle GetHandleRectangle(int handleNumber)
        {
            Point point = GetHandle(handleNumber);

            return new Rectangle(point.X - 4, point.Y - 4, 8, 8);
        }

        public int HitTest(Point point)
        {
            for (int i = 1; i <= 8; i++)
            {
                if (GetHandleRectangle(i).Contains(point))
                    return i;
            }
            return -1;
        }

        public Point GetHandle(int handleNumber)
        {
            int x, y, xCenter, yCenter;


            xCenter = m_rect.X + m_rect.Width / 2;
            yCenter = m_rect.Y + m_rect.Height / 2;
            x = m_rect.X;
            y = m_rect.Y;


            switch (handleNumber)
            {
                case 1:
                    x = m_rect.X;
                    y = m_rect.Y;
                    break;
                case 2:
                    x = xCenter;
                    y = m_rect.Y;
                    break;
                case 3:
                    x = m_rect.Right;
                    y = m_rect.Y;
                    break;
                case 4:
                    x = m_rect.Right;
                    y = yCenter;
                    break;
                case 5:
                    x = m_rect.Right;
                    y = m_rect.Bottom;
                    break;
                case 6:
                    x = xCenter;
                    y = m_rect.Bottom;
                    break;
                case 7:
                    x = m_rect.X;
                    y = m_rect.Bottom;
                    break;
                case 8:
                    x = m_rect.X;
                    y = yCenter;
                    break;
            }

            return new Point(x, y);

        }

        public Cursor GetHandleCursor(int handleNumber)
        {
            switch (handleNumber)
            {
                case 1:
                    return Cursors.SizeNWSE;
                case 2:
                    return Cursors.SizeNS;
                case 3:
                    return Cursors.SizeNESW;
                case 4:
                    return Cursors.SizeWE;
                case 5:
                    return Cursors.SizeNWSE;
                case 6:
                    return Cursors.SizeNS;
                case 7:
                    return Cursors.SizeNESW;
                case 8:
                    return Cursors.SizeWE;
                default:
                    return Cursors.Default;
            }
        }

        public void MoveHandleTo(Point point, int handleNumber)
        {

            if (point.X > pictureBox1.Width)
            {
                point.X = pictureBox1.Width;
            }
            if (point.X < 0)
            {
                point.X = 0;
            }

            if (point.Y < 0)
            {
                point.Y = 0;
            }

            if (point.Y > pictureBox1.Height)
            {
                point.Y = pictureBox1.Height;
            }

            int left = m_rect.Left;
            int top = m_rect.Top;
            int right = m_rect.Right;
            int bottom = m_rect.Bottom;
            switch (handleNumber)
            {
                case 1:
                    left = point.X;
                    top = point.Y;
                    break;
                case 2:
                    top = point.Y;
                    break;
                case 3:
                    right = point.X;
                    top = point.Y;
                    break;
                case 4:
                    right = point.X;
                    break;
                case 5:
                    right = point.X;
                    bottom = point.Y;
                    break;
                case 6:
                    bottom = point.Y;
                    break;
                case 7:
                    left = point.X;
                    bottom = point.Y;
                    break;
                case 8:
                    left = point.X;
                    break;
                case 9:
                    left = m_rect.Left +(point.X - m_startP.X);
                    top = m_rect.Top + (point.Y - m_startP.Y);
                    //判断是否超过左上角           
                    if (left < 0)
                        left = 0;
                    if (top < 0)
                        top = 0;
                    //判断是否超过右下 角     

                    if (left > (pictureBox1.Width - m_rect.Width))
                        left = pictureBox1.Width - m_rect.Width;

                    if (top > (pictureBox1.Height - m_rect.Height))
                        top = pictureBox1.Height - m_rect.Height;
                    right = left + m_rect.Width;
                    bottom = top + m_rect.Height;
                    break;
            }

            m_rect.X = left;
            m_rect.Y = top;
            m_rect.Width = right - left;
            m_rect.Height = bottom - top;

            m_targetX = m_rect.X * m_resolution.Width / this.pictureBox1.Width;
            m_targetY = m_rect.Y * m_resolution.Height / this.pictureBox1.Height;
            m_targetWidth = m_rect.Width * m_resolution.Width / this.pictureBox1.Width;
            m_targetHeight = m_rect.Height * m_resolution.Height / this.pictureBox1.Height;


            pictureBox1.Refresh();

            m_startP = point;
        }

        

        private void drawingImg()
        {
            if (!m_camera.IsOpen())
            {
                return;
            }

            m_isWaiting = true;
            int resolution_width = pictureBox1.Width;
            int resolution_height = pictureBox1.Height;
            Console.WriteLine("点击刷新缩略图");

            if (m_camera.IsOpen()) {
                m_camera.m_drawAllHandler += new DrawAllHandler(CallbackDraw);
                m_camera.StartWaitForFrame();
                m_process = m_camera.StartDrawing(ref resolution_width, ref resolution_height);
            }
            m_resolution.Width = resolution_width;
            m_resolution.Height = resolution_height;

            if (resolution_width == 0 || resolution_height == 0)
            {
                m_resolution.Width = pictureBox1.Width;
                m_resolution.Height = pictureBox1.Height;
            }
        }
        private byte[] m_pbuf;
        /// <summary>
        /// 绘制
        /// </summary>
        /// <param name="pBuf"></param>
        /// <param name="obj"></param>
        public void CallbackDraw(byte[] pBuf, object obj, int channel)
        {
            lock (obj)
            {
                try
                {
                    m_isWaiting = false;
                    Console.WriteLine("接收全图buf");
                    m_camera.m_drawAllHandler -= new DrawAllHandler(CallbackDraw);
                    OpenCvSharp.Mat mat;
                    if (channel == 1)
                    {
                        mat = new OpenCvSharp.Mat(m_resolution.Height, m_resolution.Width, OpenCvSharp.MatType.CV_8UC1, pBuf);
                    }
                    else
                    {
                        mat = new OpenCvSharp.Mat(m_resolution.Height, m_resolution.Width, OpenCvSharp.MatType.CV_8UC3, pBuf);
                    }

                    OpenCvSharp.Cv2.Flip(mat, mat, 0);

                    this.pictureBox1.Image = OpenCvSharp.Extensions.BitmapConverter.ToBitmap(mat);

                    stopDrawing();
                    if (mat != null)
                    {
                        mat.Dispose();
                    }

                    GC.Collect();
                }
                catch (Exception)
                {

                }
                
            }
        }

        public void CallMaxDraw(TUCAM_FRAME frame, object obj)
        {
            m_camera.m_bufHandler -= new BufHandler(CallMaxDraw);
            int nSize = (int)(frame.uiImgSize + frame.usHeader);
            if (m_pbuf == null || m_pbuf.Length != nSize)
            {
                m_pbuf = new byte[nSize];
            }
            Marshal.Copy(frame.pBuffer, m_pbuf, 0, nSize);
            Buffer.BlockCopy(m_pbuf, (int)(frame.usHeader), m_pbuf, 0, (int)(frame.uiImgSize));
            OpenCvSharp.Mat mat;
            if (frame.ucChannels == 1)
            {
                mat = new OpenCvSharp.Mat(frame.usHeight, frame.usWidth, OpenCvSharp.MatType.CV_8UC1, m_pbuf);
            }
            else
            {
                mat = new OpenCvSharp.Mat(frame.usHeight, frame.usWidth, OpenCvSharp.MatType.CV_8UC3, m_pbuf);
            }

            OpenCvSharp.Cv2.Flip(mat, mat, 0);
            this.pictureBox1.Image = OpenCvSharp.Extensions.BitmapConverter.ToBitmap(mat);
        }
        private void stopDrawing()
        {
            //创建一个委托，用于封装一个方法，在这里是封装了 控制更新控件 的方法
            Action invokeAction = new Action(stopDrawing);
            //判断操作控件的线程是否创建控件的线程
            //调用方调用方位于创建控件所在的线程以外的线程中，如果在其他线程则对控件进行方法调用时必须调用 Invoke 方法
            if (this.InvokeRequired)
            {
                //与调用线程不同的线程上创建(说明您必须通过 Invoke 方法对控件进行调用)
                this.Invoke(invokeAction);
            }
            else
            {
                m_camera.StopDrawing(m_process);
                m_camera.StopWaitForFrame();
                //窗体线程，即主线程
                shuaxinButton.Enabled = true;
            }
        }

        private void shuaxinButton_Click(object sender, EventArgs e)
        {
            drawingImg();
            shuaxinButton.Enabled = false;
        }

        private void pictureBox1_Paint(object sender, PaintEventArgs e)
        {
            if (m_isWaiting)
            {
                return;
            }
            if (m_rect.Width != pictureBox1.Width || m_rect.Height != pictureBox1.Height)
            {
                this.quanfuButton.Text = PdnResources.GetString("Menu.Fullframe.text");
            }

            this.m_cameraParamModel.parame.previewRectX = m_targetX;
            this.m_cameraParamModel.parame.previewRectY = m_targetY;
            this.m_cameraParamModel.parame.previewRectW = m_targetWidth;
            this.m_cameraParamModel.parame.previewRectH = m_targetHeight;

            

            if (m_resolution.Width != 0 && m_resolution.Height != 0)
            {
                if (m_rect.Width > 0 && m_rect.Height > 0)
                {
                    e.Graphics.DrawRectangle(new Pen(Color.Red, 2), m_rect);//重新绘制颜色为红色
                    for (int i = 1; i <= 8; i++)
                    {
                        e.Graphics.FillRectangle(m_brush, GetHandleRectangle(i));
                    }
                }
            }

            this.zuobiaoXTextBox.Text = m_targetX.ToString();
            this.zuobiaoYTextBox.Text = m_targetY.ToString();
            this.chicunWTextBox.Text = m_targetWidth.ToString();
            this.chicunHTextBox.Text = m_targetHeight.ToString();
        }

        private void zuobiaoXTextBox_KeyPress(object sender, KeyPressEventArgs e)
        {
            if (e.KeyChar == (char)Keys.Enter)
            {
                int val = Convert.ToInt32(this.zuobiaoXTextBox.Text);
                if (val < 0)
                {
                    this.zuobiaoXTextBox.Text = "0";
                }
                else if ((val + m_targetWidth) > m_resolution.Width)
                {
                    zuobiaoXTextBox.Text = (m_resolution.Width - m_targetWidth).ToString();
                }
                TextChange();
            }
            if (e.KeyChar != 8 && !Char.IsDigit(e.KeyChar))
            {
                e.Handled = true;
            }
        }

        private void zuobiaoYTextBox_KeyPress(object sender, KeyPressEventArgs e)
        {
            if (e.KeyChar == (char)Keys.Enter)
            {
                int val = Convert.ToInt32(this.zuobiaoYTextBox.Text);
                if (val < 0)
                {
                    this.zuobiaoYTextBox.Text = "0";
                }
                else if ((val + m_targetHeight) > m_resolution.Height)
                {
                    this.zuobiaoYTextBox.Text = (m_resolution.Height - m_targetHeight).ToString();
                }

                TextChange();
            }
            if (e.KeyChar != 8 && !Char.IsDigit(e.KeyChar))
            {
                e.Handled = true;
            }
        }

        private void chicunWTextBox_KeyPress(object sender, KeyPressEventArgs e)
        {
            if (e.KeyChar == (char)Keys.Enter)
            {
                int val = Convert.ToInt32(this.chicunWTextBox.Text);
                if (val < 0)
                {
                    this.chicunWTextBox.Text = "1";
                }
                else if ((val + Convert.ToInt32(this.zuobiaoXTextBox.Text)) > m_resolution.Width)
                {
                    this.chicunWTextBox.Text = (m_resolution.Width - Convert.ToInt32(this.zuobiaoXTextBox.Text)).ToString();
                }

                TextChange();
            }
            if (e.KeyChar != 8 && !Char.IsDigit(e.KeyChar))
            {
                e.Handled = true;
            }
        }

        private void chicunHTextBox_KeyPress(object sender, KeyPressEventArgs e)
        {
            if (e.KeyChar == (char)Keys.Enter)
            {
                int val = Convert.ToInt32(this.chicunHTextBox.Text);
                if (val < 0)
                {
                    this.chicunHTextBox.Text = "1";
                }
                else if ((val + Convert.ToInt32(this.zuobiaoYTextBox.Text)) > m_resolution.Height)
                {
                    this.chicunHTextBox.Text = (m_resolution.Height - Convert.ToInt32(this.zuobiaoYTextBox.Text)).ToString();
                }

                TextChange();
            }
            if (e.KeyChar != 8 && !Char.IsDigit(e.KeyChar))
            {
                e.Handled = true;
            }
        }

        private void TextChange()
        {
            m_targetX = Convert.ToInt32(this.zuobiaoXTextBox.Text);
            m_targetY = Convert.ToInt32(this.zuobiaoYTextBox.Text);
            m_targetWidth = Convert.ToInt32(this.chicunWTextBox.Text);
            m_targetHeight = Convert.ToInt32(this.chicunHTextBox.Text);

            if (m_resolution.Width > 0 && m_resolution.Height > 0)
            {
                m_rect.X = m_targetX * this.pictureBox1.Width / m_resolution.Width;
                m_rect.Y = m_targetY * this.pictureBox1.Height / m_resolution.Height;
                m_rect.Width = m_targetWidth * this.pictureBox1.Width / m_resolution.Width;
                m_rect.Height = m_targetHeight * this.pictureBox1.Height / m_resolution.Height;
            }
            else
            {
                m_rect.X = m_targetX;
                m_rect.Y = m_targetY;
                m_rect.Width = m_targetWidth;
                m_rect.Height = m_targetHeight;
            }

            SetROI();

            this.pictureBox1.Refresh();
        }

        private void SetROI()
        {
            if (m_use)
            {
                m_camera.SetROI(ref m_targetX, ref m_targetY, ref m_targetWidth, ref m_targetHeight);
                this.m_cameraParamModel.parame.previewRectX = m_targetX;
                this.m_cameraParamModel.parame.previewRectY = m_targetY;
                this.m_cameraParamModel.parame.previewRectW = m_targetWidth;
                this.m_cameraParamModel.parame.previewRectH = m_targetHeight;
            }
        }

        private void cmbResolution_SelectedIndexChanged(object sender, EventArgs e)
        {

            m_cameraParamModel.parame.Resolution = cmbResolution.SelectedIndex;
            int resolutionId = m_camera.GetResolutionId();
            if (resolutionId != m_cameraParamModel.parame.Resolution)
            {
                // 分辨率
                m_camera.SetResolution(m_cameraParamModel.parame.Resolution);
                //m_camera.m_bufHandler += new BufHandler(CallMaxDraw);
            }
            m_camera.GetROI(ref m_cameraParamModel.parame.previewRectX, ref m_cameraParamModel.parame.previewRectY, ref m_cameraParamModel.parame.previewRectW, ref m_cameraParamModel.parame.previewRectH);

            InitializeData();

            this.zuobiaoXTextBox.Text = m_cameraParamModel.parame.previewRectX.ToString();
            this.zuobiaoYTextBox.Text = m_cameraParamModel.parame.previewRectY.ToString();

            this.chicunWTextBox.Text = m_cameraParamModel.parame.previewRectW.ToString();
            this.chicunHTextBox.Text = m_cameraParamModel.parame.previewRectH.ToString();
        }

        private void chicunHTextBox_Leave(object sender, EventArgs e)
        {
            int val = Convert.ToInt32(this.chicunHTextBox.Text);
            if (val < 0)
            {
                this.chicunHTextBox.Text = "1";
            }
            else if ((val + Convert.ToInt32(this.zuobiaoYTextBox.Text)) > m_resolution.Height)
            {
                this.chicunHTextBox.Text = (m_resolution.Height - Convert.ToInt32(this.zuobiaoYTextBox.Text)).ToString();
            }

            TextChange();
        }

        private void chicunWTextBox_Leave(object sender, EventArgs e)
        {
            int val = Convert.ToInt32(this.chicunWTextBox.Text);
            if (val < 0)
            {
                this.chicunWTextBox.Text = "1";
            }
            else if ((val + Convert.ToInt32(this.zuobiaoXTextBox.Text)) > m_resolution.Width)
            {
                this.chicunWTextBox.Text = (m_resolution.Width - Convert.ToInt32(this.zuobiaoXTextBox.Text)).ToString();
            }

            TextChange();
        }

        private void zuobiaoYTextBox_Leave(object sender, EventArgs e)
        {
            int val = Convert.ToInt32(this.zuobiaoYTextBox.Text);
            if (val < 0)
            {
                this.zuobiaoYTextBox.Text = "0";
            }
            else if ((val + m_targetHeight) > m_resolution.Height)
            {
                this.zuobiaoYTextBox.Text = (m_resolution.Height - m_targetHeight).ToString();
            }

            TextChange();
        }

        private void zuobiaoXTextBox_Leave(object sender, EventArgs e)
        {
            int val = Convert.ToInt32(this.zuobiaoXTextBox.Text);
            if (val < 0)
            {
                this.zuobiaoXTextBox.Text = "0";
            }
            else if ((val + m_targetWidth) > m_resolution.Width)
            {
                zuobiaoXTextBox.Text = (m_resolution.Width - m_targetWidth).ToString();
            }
            TextChange();
        }
    }
}