C#点击按钮画图不刷新
using System;using System.Collections.Generic;
using
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Threading;
using System.Drawing.Drawing2D;
namespace SnakeTest
{
class Snake
{
IMovingSate movesate;
public int[][] map;
public LinkedList<Point> linkSnake;
SnakeUI snakeUI;
public Snake(int mapWidth, int mapHeight)
{
map = new int[mapHeight][];
linkSnake = new LinkedList<Point>();
for (int i = 0; i < mapHeight; i++)
{
map[i] = new int[mapWidth];
}
Point start = new Point(mapWidth / 2 , mapHeight / 2 );
linkSnake.AddFirst(start);
}
public void MoveLeft()
{
movesate = new MoveLeft();
movesate.UpdateUI += new Action<LinkedList<Point>>(snakeUI.DrawGraph);
movesate.Move(map, linkSnake);
}
public void MoveUp()
{
movesate = new MoveUp();
movesate.UpdateUI += new Action<LinkedList<Point>>(snakeUI.DrawGraph);
movesate.Move(map, linkSnake);
}
public void MoveRight()
{
movesate = new MoveRight();
movesate.UpdateUI += new Action<LinkedList<Point>>(snakeUI.DrawGraph);
movesate.Move(map, linkSnake);
}
public void MoveDown()
{
movesate = new MoveDown();
movesate.UpdateUI += new Action<LinkedList<Point>>(snakeUI.DrawGraph);
movesate.Move(map, linkSnake);
}
public void Run()
{
snakeUI = new SnakeUI(this);
Application.Run(snakeUI);
//movesate = new MoveLeft();
//movesate.UpdateUI += new Action<LinkedList<Point>>( snakeUI.DrawGraph);
//movesate.Move(map, linkSnake);
//movesate = new MoveUp();
//movesate.UpdateUI += new Action<LinkedList<Point>>(snakeUI.DrawGraph);
//movesate.Move(map, linkSnake);
}
}
class SnakeUI : Form
{
int cellWidth = 20;//地图格子宽度
int cellHeiht = 20;//地图格子高度
int paddingLeft = 10;
int paddingUp = 40;
int lineWidth = 1;//线的宽度
PictureBox pb;
Snake snake;
public SnakeUI(Snake snake)
{
int[][] map = snake.map;
this.snake = snake;
this.SuspendLayout();
this.Text = "SnakeTest Beta";
pb = new PictureBox();
pb.Dock = DockStyle.Fill;
pb.BackColor = Color.White;
pb.BorderStyle = BorderStyle.Fixed3D;
int mapWidth = (lineWidth + cellWidth) * map[0].Length + lineWidth;
int mapHeight = (cellHeiht + lineWidth) * map.Length + lineWidth;
pb.Width = paddingLeft + mapWidth;
pb.Height = paddingUp + mapHeight;
this.Width = pb.Width + paddingLeft * 2+10*2;
//绘制方向键
TableLayoutPanel p = new TableLayoutPanel();
p.RowCount = 1;
p.ColumnCount = 4;
p.Dock = DockStyle.Top;
this.Controls.Add(p);
Button b = new Button();
b.Name = "btnLeft";
b.Click += new EventHandler(ButtonClick);
b.Text = "Left";
p.Controls.Add(b);
b = new Button();
b.Name = "btnUp";
b.Click += new EventHandler(ButtonClick);
b.Text = "Up";
p.Controls.Add(b);
b = new Button();
b.Name = "btnRight";
b.Click += new EventHandler(ButtonClick);
b.Text = "Right";
p.Controls.Add(b);
b = new Button();
b.Name = "btnDown";
b.Click += new EventHandler(ButtonClick);
b.Text = "Down";
p.Controls.Add(b);
p.Height = b.Height + 4;
DrawGraph(snake.linkSnake);
this.DoubleBuffered = true;
this.ResumeLayout(true);
}
public void DrawMap()
{
int[][] map = snake.map;
pb = new PictureBox();
pb.Dock = DockStyle.Fill;
pb.BackColor = Color.White;
pb.BorderStyle = BorderStyle.Fixed3D;
int mapWidth = (lineWidth + cellWidth) * map[0].Length + lineWidth;
int mapHeight = (cellHeiht + lineWidth) * map.Length + lineWidth;
pb.Width = paddingLeft + mapWidth;
pb.Height = paddingUp + mapHeight;
//绘制地图
Bitmap flag = new Bitmap(pb.Width, pb.Height);
Graphics g = Graphics.FromImage(flag);
g.Clear(Color.White);
//横线
for (int i = 0; i <= map[0].Length; i++)
{
g.DrawLine(Pens.Black, new Point(0 + paddingLeft, paddingUp + i * (cellHeiht + lineWidth)), new Point(paddingLeft + mapWidth, paddingUp + i * (cellHeiht + lineWidth)));
}
//竖线
for (int j = 0; j <= map.Length; j++)
{
g.DrawLine(Pens.Black, new Point(paddingLeft + j * (cellWidth + lineWidth), paddingUp + 0), new Point(paddingLeft + j * (cellWidth + lineWidth), paddingUp + mapHeight));
}
pb.Image = flag;
this.DoubleBuffered = true;
//return flag;
}
public void DrawGraph(LinkedList<Point> snake)
{
//this.SuspendLayout();
DrawMap();
foreach (Point pointAt in snake)
DrawPoint(pointAt);
//this.ResumeLayout();
this.Controls.Remove(pb);
this.Controls.Add(pb);
this.Refresh();
Thread.Sleep(100);
Application.DoEvents();
}
private void DrawPoint(Point pointAt)
{
//this.Controls.Remove(pb);
if (pb.Image == null)
pb.Image = new Bitmap(pb.Width, pb.Height);
Graphics g = Graphics.FromImage(pb.Image);
Rectangle rec = new Rectangle(pointAt.X * (cellWidth + lineWidth) + paddingLeft + lineWidth, pointAt.Y * (cellHeiht + lineWidth) + paddingUp + lineWidth, cellWidth, cellHeiht);
Image bgImg = new Bitmap(cellWidth - 1, cellHeiht - 1);
GraphicsPath graphPath = new GraphicsPath();
graphPath.AddRectangle(rec);
g.FillPath(new SolidBrush(Color.Blue), graphPath);
//pb.Image = new Bitmap(pb.Width, pb.Height);
//pb = new PictureBox();
// pb.Image = map;
//this.Controls.Add(pb);
pb.Image.Save("D:\\a.bmp");
}
private void ButtonClick(object sender, EventArgs e)
{
switch ((sender as Button).Text)
{
case"Left":
snake.MoveLeft();
break;
case"Up":
snake.MoveUp();
break;
case "Right":
snake.MoveRight();
break;
case "Down":
snake.MoveDown();
break;
}
}
static void Main()
{
Snake snake = new Snake(11, 11);
snake.Run();
}
}
interface IMovingSate
{
event Action<LinkedList<Point>> UpdateUI;
void Move(int[][] map, LinkedList<Point> snake);
}
class MoveUp : IMovingSate
{
public event Action<LinkedList<Point>> UpdateUI;
public void Move(int[][] map, LinkedList<Point> snake)
{
Point last = snake.Last.Value;
Point first = snake.First.Value;
if (first.Y - 1 > 0)
{
first.Y--;
snake.RemoveLast();
snake.AddFirst(first);
if (UpdateUI != null)
UpdateUI(snake);
}
}
}
class MoveLeft : IMovingSate
{
public event Action<LinkedList<Point>> UpdateUI;
public void Move(int[][] map, LinkedList<Point> snake)
{
Point last = snake.Last.Value;
Point first = snake.First.Value;
if (first.X - 1 > 0)
{
first.X--;
snake.RemoveLast();
snake.AddFirst(first);
UpdateUI(snake);
}
}
}
class MoveDown : IMovingSate
{
public event Action<LinkedList<Point>> UpdateUI;
public void Move(int[][] map, LinkedList<Point> snake)
{
Point last = snake.Last.Value;
Point first = snake.First.Value;
if (first.Y + 1 < map.Length)
{
first.Y++;
snake.RemoveLast();
snake.AddFirst(first);
UpdateUI(snake);
}
}
}
class MoveRight : IMovingSate
{
public event Action<LinkedList<Point>> UpdateUI;
public void Move(int[][] map, LinkedList<Point> snake)
{
Point last = snake.Last.Value;
Point first = snake.First.Value;
if (first.Y + 1 < map[0].Length)
{
first.X++;
snake.RemoveLast();
snake.AddFirst(first);
UpdateUI(snake);
}
}
}
}
