C#批量生成缩略图工具的源代码

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Threading;
using System.IO;
using System.Diagnostics;
using System.Windows.Forms.Design;
namespace Image
{
    public class ImageConvert 
    {
        public static void ShowThumbnail( string oldfile, 
        string newfile, 
        int h, 
        int w )  
        {
            System.Drawing.Image img = System.Drawing.Image.FromFile( oldfile );
            System.Drawing.Image.GetThumbnailImageAbort myCallback = new System.Drawing.Image.GetThumbnailImageAbort( ThumbnailCallback );
            
            int oldh = img.Height;
            
            int oldw = img.Width;
            
            int newh,neww;
            double h1 = oldh*1.0/h;
            double w1 = oldw*1.0/w;
            double f = ( h1>w1 )? h1:w1;
            if( f < 1.0 )
            {
                newh = oldh;
                neww = oldw;
            }
            else
            {
                newh = ( int )( oldh/f );
                neww = ( int )( oldw/f );
            }
            System.Drawing.Image myThumbnail = img.GetThumbnailImage( neww, newh, myCallback, IntPtr.Zero );
            myThumbnail.Save( newfile, System.Drawing.Imaging.ImageFormat.Jpeg );
            img.Dispose( );
            myThumbnail.Dispose( );
        }
        
        private static bool ThumbnailCallback( )  
        {
            return false;
        }
    }
    
    public class FolderDialog : FolderNameEditor 
    {
        FolderNameEditor.FolderBrowser fDialog = new System.Windows.Forms.Design.FolderNameEditor.FolderBrowser( );
        
        public FolderDialog( )  
        {
        }
        
        public DialogResult DisplayDialog( )  
        {
            return DisplayDialog( "请选择一个文件夹" );
        }
        
        public DialogResult DisplayDialog( string description )  
        {
            fDialog.Description = description;
            return fDialog.ShowDialog( );
        }
        
        public 
        string Path  
        {
            get
            {
                return fDialog.DirectoryPath;
            }
        }
        ~FolderDialog( )  
        {
            fDialog.Dispose( );
        }
    }
    
    /// <summary> 
    /// Form1 的摘要说明. 
    /// </summary> 
    public class Form1 : System.Windows.Forms.Form 
    {
        private System.Windows.Forms.LinkLabel linkLabel1;
        
        private System.Windows.Forms.LinkLabel linkLabel2;
        
        private System.Windows.Forms.TextBox path1;
        
        private System.Windows.Forms.TextBox path2;
        
        private System.Windows.Forms.TextBox width;
        
        private System.Windows.Forms.TextBox height;
        
        private System.Windows.Forms.ListView listView1;
        
        private System.Windows.Forms.LinkLabel linkLabel3;
        
        private System.Windows.Forms.LinkLabel linkLabel4;
        
        private System.Windows.Forms.ColumnHeader columnHeader1;
        
        private System.Windows.Forms.ColumnHeader columnHeader2;
        
        private System.Windows.Forms.ColumnHeader columnHeader3;
        
        private System.Windows.Forms.ColumnHeader columnHeader4;
        
        private System.Windows.Forms.ColumnHeader columnHeader5;
        
        private System.Windows.Forms.ColumnHeader columnHeader6;
        
        private ArrayList threads = new ArrayList( );
        
        private ArrayList images = new ArrayList( );
        
        /// <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);
        }
        Windows 窗体设计器生成的代码
        /// <summary>  
        /// 应用程序的主入口点.  
        /// </summary>  [STAThread]  static void Main( )
        {
            Application.Run( new Form1( ) );
        }
        
        private void linkLabel1_LinkClicked( object sender, System.Windows.Forms.LinkLabelLinkClickedEventArgs e )  
        {
            FolderDialog dlg = new FolderDialog( );
            if( dlg.DisplayDialog( )==DialogResult.OK )
            path1.Text = dlg.Path;
        }
        
        private void linkLabel2_LinkClicked( object sender, System.Windows.Forms.LinkLabelLinkClickedEventArgs e )  
        {
            FolderDialog dlg = new FolderDialog( );
            if( dlg.DisplayDialog( )==DialogResult.OK )
            path2.Text = dlg.Path;
        }
        
        private void linkLabel3_LinkClicked( object sender, System.Windows.Forms.LinkLabelLinkClickedEventArgs e )  
        {
            string[] img = Directory.GetFiles( path1.Text, "*.jpg" );
            listView1.Items.Add( new ListViewItem( new 
            string[]
            {
                path1.Text, path2.Text, width.Text, height.Text, img.Length.ToString( ), "0"
            }
            ) );
        }
        
        private void linkLabel4_LinkClicked( object sender, System.Windows.Forms.LinkLabelLinkClickedEventArgs e )  
        {
            foreach( ListViewItem item in listView1.Items )
            {
                Thread t = new Thread( new ThreadStart( Process ) );
                t.Start( );
                threads.Add( t );
            }
        }
        
        private void Process( )  
        {
            int index = threads.IndexOf( Thread.CurrentThread );
            ListViewItem item = listView1.Items[index];
            
            string path1 = item.SubItems[0].Text;
            
            string path2 = item.SubItems[1].Text;
            
            int width = 
            int.Parse( item.SubItems[2].Text );
            
            int height = 
            int.Parse( item.SubItems[3].Text );
            
            int i = 0;
            foreach( string file1 in Directory.GetFiles( path1, "*.jpg" ) )
            {
                i++;
                
                string file2 = path2 + @"" + Path.GetFileName( file1 );
                ImageConvert.ShowThumbnail( file1,file2, height, width );
                lock( listView1 )
                {
                    listView1.Items[index].SubItems[5].Text = i.ToString( );
                }
            }
        }
    }
}

posted @ 2007-09-11 10:07  宿远  阅读(325)  评论(0)    收藏  举报