实例介绍
【实例简介】
【实例截图】
【实例截图】
【核心代码】
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
namespace Image
{
/// <summary>
/// Form1 的摘要说明。
/// </summary>
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.Button button1;
private System.Windows.Forms.OpenFileDialog openFileDialog1;
private System.Drawing.Bitmap MyBitmap;
private string MyFileName="";
private System.Windows.Forms.PictureBox pictureBox1;
private System.Windows.Forms.Button button2;
private System.Windows.Forms.Button button3;
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.Container components = null;
public Form1()
{
//
// Windows 窗体设计器支持所必需的
//
InitializeComponent();
//
// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
//
}
/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows 窗体设计器生成的代码
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(Form1));
this.button1 = new System.Windows.Forms.Button();
this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();
this.pictureBox1 = new System.Windows.Forms.PictureBox();
this.button2 = new System.Windows.Forms.Button();
this.button3 = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// button1
//
this.button1.Location = new System.Drawing.Point(8, 168);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(72, 23);
this.button1.TabIndex = 1;
this.button1.Text = "浏览图像";
this.button1.Click = new System.EventHandler(this.button1_Click);
//
// openFileDialog1
//
this.openFileDialog1.Filter = "Image files (JPeg, Gif, Bmp, etc.)|*.jpg;*.jpeg;*.gif;*.bmp;*.tif; *.tiff; *.png|"
" JPeg files (*.jpg;*.jpeg)|*.jpg;*.jpeg |GIF files (*.gif)|*.gif |BMP files (*.b"
"mp)|*.bmp|Tiff files (*.tif;*.tiff)|*.tif;*.tiff|Png files (*.png)| *.png |All f"
"iles (*.*)|*.*";
//
// pictureBox1
//
this.pictureBox1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
this.pictureBox1.Image = ((System.Drawing.Image)(resources.GetObject("pictureBox1.Image")));
this.pictureBox1.Location = new System.Drawing.Point(8, 8);
this.pictureBox1.Name = "pictureBox1";
this.pictureBox1.Size = new System.Drawing.Size(296, 152);
this.pictureBox1.TabIndex = 3;
this.pictureBox1.TabStop = false;
//
// button2
//
this.button2.Location = new System.Drawing.Point(80, 168);
this.button2.Name = "button2";
this.button2.Size = new System.Drawing.Size(112, 23);
this.button2.TabIndex = 4;
this.button2.Text = "马赛克显示图像";
this.button2.Click = new System.EventHandler(this.button2_Click);
//
// button3
//
this.button3.Location = new System.Drawing.Point(192, 168);
this.button3.Name = "button3";
this.button3.Size = new System.Drawing.Size(112, 23);
this.button3.TabIndex = 5;
this.button3.Text = "马赛克退隐图像";
this.button3.Click = new System.EventHandler(this.button3_Click);
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(224)), ((System.Byte)(224)), ((System.Byte)(224)));
this.ClientSize = new System.Drawing.Size(312, 198);
this.Controls.Add(this.button3);
this.Controls.Add(this.button2);
this.Controls.Add(this.pictureBox1);
this.Controls.Add(this.button1);
this.MaximizeBox = false;
this.Name = "Form1";
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
this.Text = "演示图像马赛克显示";
this.ResumeLayout(false);
}
#endregion
/// <summary>
/// 应用程序的主入口点。
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
private void button1_Click(object sender, System.EventArgs e)
{//浏览图像文件
this.openFileDialog1.ShowDialog();
if(this.openFileDialog1.FileName.Trim()=="")
return;
try
{ //得到原始大小的图像
MyFileName=this.openFileDialog1.FileName;
Bitmap SrcBitmap=new Bitmap(MyFileName);
//得到缩放后的图像
MyBitmap=new Bitmap(SrcBitmap,this.pictureBox1.Width,
this.pictureBox1.Height);
this.pictureBox1.Image=MyBitmap;
}
catch(Exception Err)
{
MessageBox.Show(this,"打开图像文件错误！","信息提示",MessageBoxButtons.OK,MessageBoxIcon.Information);
}
}
private void button2_Click(object sender, System.EventArgs e)
{//以马赛克方式显示图像
if(this.MyFileName.Length<2)
{
MessageBox.Show("请首先单击“浏览图像”按钮选择图像","信息提示",MessageBoxButtons.OK,MessageBoxIcon.Information);
return;
}
int dw=MyBitmap.Width/50;
int dh=MyBitmap.Height/50;
Graphics g=this.pictureBox1.CreateGraphics();
g.Clear(Color.Gray);
Point []MyPoint=new Point[2500];
for(int x=0;x<50;x )
for(int y=0;y<50;y )
{
MyPoint[x*50 y].X=x*dw;
MyPoint[x*50 y].Y=y*dh;
}
Bitmap bitmap=new Bitmap(MyBitmap.Width,MyBitmap.Height);
for(int i=0;i<10000;i )
{
System.Random MyRandom=new Random();
int iPos=MyRandom.Next(2500);
for(int m=0;m<dw;m )
for(int n=0;n<dh;n )
{
bitmap.SetPixel(MyPoint[iPos].X m,MyPoint[iPos].Y n,MyBitmap.GetPixel(MyPoint[iPos].X m,MyPoint[iPos].Y n));
}
this.pictureBox1.Refresh();
this.pictureBox1.Image=bitmap;
}
for(int i=0;i<2500;i )
for(int m=0;m<dw;m )
for(int n=0;n<dh;n )
{
bitmap.SetPixel(MyPoint[i].X m,MyPoint[i].Y n,MyBitmap.GetPixel(MyPoint[i].X m,MyPoint[i].Y n));
}
this.pictureBox1.Refresh();
this.pictureBox1.Image=bitmap;
}
private void button3_Click(object sender, System.EventArgs e)
{//以马赛克方式退隐图像
if(this.MyFileName.Length<2)
{
MessageBox.Show("请首先单击“浏览图像”按钮选择图像","信息提示",MessageBoxButtons.OK,MessageBoxIcon.Information);
return;
}
MyBitmap=(Bitmap)this.pictureBox1.Image.Clone();
int dw=MyBitmap.Width/50;
int dh=MyBitmap.Height/50;
Graphics g=this.pictureBox1.CreateGraphics();
Point []MyPoint=new Point[2500];
for(int x=0;x<50;x )
for(int y=0;y<50;y )
{
MyPoint[x*50 y].X=x*dw;
MyPoint[x*50 y].Y=y*dh;
}
Bitmap bitmap=new Bitmap(MyBitmap.Width,MyBitmap.Height);
for(int i=0;i<2500;i )
for(int m=0;m<dw;m )
for(int n=0;n<dh;n )
{
bitmap.SetPixel(MyPoint[i].X m,MyPoint[i].Y n,MyBitmap.GetPixel(MyPoint[i].X m,MyPoint[i].Y n));
}
this.pictureBox1.Refresh();
this.pictureBox1.Image=bitmap;
bitmap=(Bitmap)this.pictureBox1.Image.Clone();
for(int i=0;i<10000;i )
{
System.Random MyRandom=new Random();
int iPos=MyRandom.Next(2500);
for(int m=0;m<dw;m )
for(int n=0;n<dh;n )
{
bitmap.SetPixel(MyPoint[iPos].X m,MyPoint[iPos].Y n,this.pictureBox1.BackColor);
}
this.pictureBox1.Refresh();
this.pictureBox1.Image=bitmap;
}
for(int i=0;i<2500;i )
for(int m=0;m<dw;m )
for(int n=0;n<dh;n )
{
bitmap.SetPixel(MyPoint[i].X m,MyPoint[i].Y n,this.pictureBox1.BackColor);
}
g.Clear(this.pictureBox1.BackColor);
}
}
}
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