C#笔记9——基于TableLayoutPanel的多分屏、全屏程序

    最近由于工作需要，需要设置一个多分屏窗口以便于多分屏播放视频！
思考了一下，大致思路如下：用TableLayoutPanel来划分多个区域，在每个区域中都放入一个PictureBox，用PictureBox来接收摄像机的数据流；
     每次选择不同的分屏时，根据数量n*n来设置TableLayoutPanel的行列数量，并向其中添加PictureBox。
多分屏效果图如下：

    对于多分屏，通常需要全屏功能，多分为显示屏全屏和程序窗体全屏，其对应的效果如下：

代码如下：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Windows;

namespace MultiCamera
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            split_screen(1);
            //记录原来屏幕大小和宽高
            Point_Old = new System.Drawing.Point(this.Location.X,this.Location.Y); 
            Width_Old = this.Width;
            Height_old = this.Height;
        }
        private int curScreenNum = 0;
        private bool isFullScreen = false;
        private int row = 0;
        private int col = 0;
        private PictureBox[] pb = new PictureBox[25];
        private Point Point_Old = new System.Drawing.Point();
        private int Width_Old;
        private int Height_old;
        private void split_screen(int num)
        {
            tlp_screen.ColumnStyles.Clear();
            tlp_screen.RowStyles.Clear(); //清除行列属性
            int i;
            for (i = 0; i < curScreenNum; i++)
            {
                tlp_screen.Controls.Remove(pb[i]);
            }
            tlp_screen.Refresh();
            int Sqrt_num = (int)Math.Sqrt(num);
            tlp_screen.ColumnCount = Sqrt_num;
            tlp_screen.RowCount = Sqrt_num;
            int pb_width = (tlp_screen.Width-6*Sqrt_num) / Sqrt_num; //无法修改picturebox的Margin为0(默认为3)，所以可设置空格6*列/行
            int pb_height = (tlp_screen.Height-6*Sqrt_num) / Sqrt_num;
            for (i = 0; i < num; i++)
            {
                row = i / Sqrt_num;
                col = i % Sqrt_num;
                pb[i] = new PictureBox();
                pb[i].Tag = i;
                pb[i].Click += new System.EventHandler(this.PicClick);
                //pb[i].Padding = new Padding(1, 1, 1, 1); //为何不管用？
                tlp_screen.Controls.Add(pb[i],col,row);
                pb[i].BackColor = Color.FromArgb(50, 20 * (row + col), 40 * row, 10 * col);
                pb[i].Location = new System.Drawing.Point(row * pb_width, col * pb_height);
                pb[i].Size = new System.Drawing.Size(pb_width,pb_height);
                //Console.WriteLine("pb[{0}] w:{1} h:{2} x:{3},y:{4}", i,pb[i].Width, pb[i].Height, pb[i].Location.X, pb[i].Location.Y);
            }
            curScreenNum = num;
        }

        private void PicClick(object sender, EventArgs e)
        {
            PictureBox pic = sender as PictureBox;
            pic.BackColor = Color.Blue ;
            string PicTag = pic.Tag.ToString();
            //MessageBox.Show("I'm PictrueBox["+PicTag+"]");
            FullScreen(pic);
            switch (PicTag)
            {
                case "0":
                    break;
                case "1":
                    break;
                case "2":
                    break;
                case "3":
                    break;
                case "4":
                    break;
                case "5":
                    break;
                case "6":
                    break;
                case "7":
                    break;
                case "8":
                    break;
                case "9":
                    break;
                case "10":
                    break;
                case "11":
                    break;
                case "12":
                    break;
                case "13":
                    break;
                case "14":
                    break;
                case "15":
                    break;
                case "16":
                    break;
                case "17":
                    break;
                case "18":
                    break;
                case "19":
                    break;
                case "20":
                    break;
                case "21":
                    break;
                case "22":
                    break;
                case "23":
                    break;
                case "24":
                    break;
                default:
                    break;
            }
        }

        private void FullScreen(PictureBox pic)
        {
            //窗体内部全屏
            /*
            if (!isFullScreen)
            { //Full Screen
                isFullScreen = true;
                tlp_screen.Controls.Remove(pic);
                pic.Parent = this;
                pic.BringToFront();
                pic.Dock = DockStyle.Fill;
                tlp_screen.Hide();
            }
            else
            {//Cancel Full Screen
                isFullScreen = false;
                tlp_screen.Controls.Add(pic);
                pic.Parent = tlp_screen;
                pic.Dock = DockStyle.Fill;
                tlp_screen.Show();
            }
            */

            /*窗体外全屏*/
            Rectangle rect = new Rectangle();
            rect = Screen.GetBounds(this);//获取屏幕大小
            if (!isFullScreen)
            { //Full Screen
                isFullScreen = true;
                this.FormBorderStyle = FormBorderStyle.None; //取消窗体边框
                this.Width = rect.Width;
                this.Height = rect.Height;
                this.Location = new System.Drawing.Point(0, 0);
                tlp_screen.Controls.Remove(pic);
                pic.Parent = this;
                pic.BringToFront();
                pic.Dock = DockStyle.Fill;
                tlp_screen.Hide();
            }
            else
            {//Cancel Full Screen
                isFullScreen = false;
                this.FormBorderStyle = FormBorderStyle.Sizable;
                this.Location = Point_Old;
                this.Height = Height_old;
                this.Width = Width_Old;
                tlp_screen.Controls.Add(pic);
                pic.Parent = tlp_screen;
                pic.Dock = DockStyle.Fill;
                tlp_screen.Show();
            }

        }
        private void btn_fp_1_Click(object sender, EventArgs e)
        {
            split_screen(1);
        }
        private void btn_fp_4_Click(object sender, EventArgs e)
        {
            split_screen(4);
        }
        private void btn_fp_9_Click(object sender, EventArgs e)
        {
            split_screen(9);
        }
        private void btn_fp_16_Click(object sender, EventArgs e)
        {
            split_screen(16);
        }
        private void btn_fp_25_Click(object sender, EventArgs e)
        {
            split_screen(25);
        }
    }
}