using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.IO;

namespace 圖像格式轉(zhuǎn)II
{
	/// <summary>
	/// Form1 的摘要說明。
	/// </summary>
	public class FormMain : System.Windows.Forms.Form
	{
		private System.Windows.Forms.TreeView treeViewDir;
		private System.Windows.Forms.Splitter splitter1;
		private System.Windows.Forms.Panel panel1;
		private System.Windows.Forms.PictureBox pictureBox;
		/// <summary>
		/// 必需的設(shè)計(jì)器變量。
		/// </summary>
		private System.ComponentModel.Container components = null;

		private Bitmap bitmap;
		//public  void Bitmap(string filename,bool useIcm);//**********
		public FormMain()
		{
			//
			// Windows 窗體設(shè)計(jì)器支持所必需的
			//
			InitializeComponent();
			//
			// TODO: 在 InitializeComponent 調(diào)用后添加任何構(gòu)造函數(shù)代碼
			//
			pictureBox.Top=treeViewDir.Top;
			pictureBox.Left=treeViewDir.Left;
			pictureBox.Width=panel1.Width;
			pictureBox.Height=panel1.Height;
			bitmap=null;
			FillDirTree();		
		}

		/// <summary>
		/// 清理所有正在使用的資源。
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// <summary>
		/// 設(shè)計(jì)器支持所需的方法 - 不要使用代碼編輯器修改
		/// 此方法的內(nèi)容。
		/// </summary>
		private void InitializeComponent()
		{
			this.treeViewDir = new System.Windows.Forms.TreeView();
			this.splitter1 = new System.Windows.Forms.Splitter();
			this.panel1 = new System.Windows.Forms.Panel();
			this.pictureBox = new System.Windows.Forms.PictureBox();
			this.panel1.SuspendLayout();
			this.SuspendLayout();
			// 
			// treeViewDir
			// 
			this.treeViewDir.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(0)), ((System.Byte)(192)), ((System.Byte)(192)));
			this.treeViewDir.Dock = System.Windows.Forms.DockStyle.Left;
			this.treeViewDir.ImageIndex = -1;
			this.treeViewDir.Location = new System.Drawing.Point(0, 0);
			this.treeViewDir.Name = "treeViewDir";
			this.treeViewDir.SelectedImageIndex = -1;
			this.treeViewDir.Size = new System.Drawing.Size(136, 373);
			this.treeViewDir.TabIndex = 0;
			this.treeViewDir.AfterSelect += new System.Windows.Forms.TreeViewEventHandler(this.treeViewDir_AfterSelect);
			this.treeViewDir.BeforeExpand += new System.Windows.Forms.TreeViewCancelEventHandler(this.treeViewDir_BeforeExpand);
			// 
			// splitter1
			// 
			this.splitter1.Location = new System.Drawing.Point(136, 0);
			this.splitter1.Name = "splitter1";
			this.splitter1.Size = new System.Drawing.Size(8, 373);
			this.splitter1.TabIndex = 1;
			this.splitter1.TabStop = false;
			// 
			// panel1
			// 
			this.panel1.Controls.Add(this.pictureBox);
			this.panel1.Dock = System.Windows.Forms.DockStyle.Fill;
			this.panel1.Location = new System.Drawing.Point(144, 0);
			this.panel1.Name = "panel1";
			this.panel1.Size = new System.Drawing.Size(360, 373);
			this.panel1.TabIndex = 2;
			this.panel1.Resize += new System.EventHandler(this.panel1_Resize);
			// 
			// pictureBox
			// 
			this.pictureBox.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(192)), ((System.Byte)(192)), ((System.Byte)(255)));
			this.pictureBox.Dock = System.Windows.Forms.DockStyle.Fill;
			this.pictureBox.Location = new System.Drawing.Point(0, 0);
			this.pictureBox.Name = "pictureBox";
			this.pictureBox.Size = new System.Drawing.Size(360, 373);
			this.pictureBox.SizeMode = System.Windows.Forms.PictureBoxSizeMode.StretchImage;
			this.pictureBox.TabIndex = 0;
			this.pictureBox.TabStop = false;
			// 
			// FormMain
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(504, 373);
			this.Controls.Add(this.panel1);
			this.Controls.Add(this.splitter1);
			this.Controls.Add(this.treeViewDir);
			this.Name = "FormMain";
			this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
			this.Text = "圖像瀏覽";
			this.panel1.ResumeLayout(false);
			this.ResumeLayout(false);

		}
		#endregion

		private void FillDirTree()
		{
			string[] drivers=Environment.GetLogicalDrives();
			for(int i=0;i<drivers.Length;i++)
			{
				Console.WriteLine("i={0}",i);
				if(PlatformInvokeKernel32.GetDriveType(drivers[i])==PlatformInvokeKernel32.DRIVE_FIXED)
				{
					DirNode root=new DirNode(drivers[i]);
					treeViewDir.Nodes.Add(root);
					AddDirs(root);
				}
			}
		}
		private void AddDirs(TreeNode node)
		{
			try
			{
				DirectoryInfo dir=new DirectoryInfo(GetPathFromNode(node));
				DirectoryInfo[] e=dir.GetDirectories();
				FileInfo[] f=dir.GetFiles();
				string name;
				for(int i=0;i<e.Length;i++)
				{
					name=e[i].Name;
					if(!name.Equals(".")&&!name.Equals(".."))
					{
						node.Nodes.Add(new DirNode(name));
					}
				}
				for(int i=0;i<f.Length;i++)
				{
					name=f[i].Name;
					node.Nodes.Add(new DirNode(name));
				}
			}
			catch
			{
			}
		}
		private string GetPathFromNode(TreeNode node)
		{
			if(node.Parent==null)
			{
				return node.Text;
			}
			return Path.Combine(GetPathFromNode(node.Parent),node.Text);
		}
		/// <summary>
		/// 應(yīng)用程序的主入口點(diǎn)。
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new FormMain());
		}

		private void panel1_Resize(object sender, System.EventArgs e)
		{
			pictureBox.Top=treeViewDir.Top;
			pictureBox.Left=treeViewDir.Left;
			if(bitmap!=null)
			{
				if(bitmap.Width>bitmap.Height)
				{
					pictureBox.Width=panel1.Width;
					pictureBox.Height=
						(int)((double) bitmap.Height*panel1.Width/bitmap.Width);
				}
				else
				{
					pictureBox.Height=panel1.Height;
					pictureBox.Width=
						(int)((double) bitmap.Width*panel1.Height/bitmap.Height);
				}
			}
			else
			{
				pictureBox.Width=panel1.Width;
				pictureBox.Height=panel1.Height;
			}
			pictureBox.Refresh();
		}

		private void treeViewDir_AfterSelect(object sender, System.Windows.Forms.TreeViewEventArgs e)
		{
			if(bitmap!=null)
			{
				bitmap.Dispose();
			}
			try
			{
				string fileName=GetPathFromNode(e.Node);
				bitmap=new Bitmap(fileName);
				FileInfo f=new FileInfo(fileName);
				if(bitmap.Width>bitmap.Height)
				{
					pictureBox.Width=panel1.Width;
					pictureBox.Height=
						(int)((double) bitmap.Height*panel1.Width/bitmap.Width);
				}
				else
				{
					pictureBox.Height=panel1.Height;
					pictureBox.Width=
						(int)((double) bitmap.Width*panel1.Height/bitmap.Height);
				}
				pictureBox.Image=bitmap;
				this.Text="圖像瀏覽"+f.Name;
			}
			catch
			{
				pictureBox.Width=panel1.Width;
				pictureBox.Height=panel1.Height;
			}
		}

		private void treeViewDir_BeforeExpand(object sender, System.Windows.Forms.TreeViewCancelEventArgs e)
		{
			DirNode nodeExpanding=(DirNode)e.Node;
			if(!nodeExpanding.SubDirectoriesAdded)
			{
				AddSubDirs(nodeExpanding);
			}
		}
		private void AddSubDirs(DirNode node)
		{
			for(int i=0;i<node.Nodes.Count;i++)
			{
				AddDirs(node.Nodes[i]);
			}
			node.SubDirectoriesAdded=true;
		}
	}
}