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

namespace Graphics
{
	/// <summary>
	/// Summary description for Form1.
	/// </summary>
	public class MainForm : System.Windows.Forms.Form
	{
		private String fileName;
		int fileIndex = 0;

		private System.Windows.Forms.OpenFileDialog openFileDialog;
		private System.Windows.Forms.PictureBox pictureBox;
		private System.Windows.Forms.TextBox textOutput;
		private System.Windows.Forms.Button buttonOpen;
		private System.Windows.Forms.Button buttonSave;
		private System.Windows.Forms.Button buttonCopy;
		private System.Windows.Forms.SaveFileDialog saveFileDialog;
		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;

		public MainForm()
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

			//
			// TODO: Add any constructor code after InitializeComponent call
			//
		}

		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
			this.openFileDialog = new System.Windows.Forms.OpenFileDialog();
			this.pictureBox = new System.Windows.Forms.PictureBox();
			this.textOutput = new System.Windows.Forms.TextBox();
			this.buttonOpen = new System.Windows.Forms.Button();
			this.buttonSave = new System.Windows.Forms.Button();
			this.buttonCopy = new System.Windows.Forms.Button();
			this.saveFileDialog = new System.Windows.Forms.SaveFileDialog();
			this.SuspendLayout();
			// 
			// openFileDialog
			// 
			this.openFileDialog.DefaultExt = "png";
			this.openFileDialog.Filter = "Image files (*.bmp, *.png, *.jpg, *.gif)|*.BMP;*.PNG;*.JPG;*.GIF|All files (*.*)|" +
				"*.*";
			// 
			// pictureBox
			// 
			this.pictureBox.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
			this.pictureBox.Location = new System.Drawing.Point(16, 16);
			this.pictureBox.Name = "pictureBox";
			this.pictureBox.Size = new System.Drawing.Size(160, 160);
			this.pictureBox.SizeMode = System.Windows.Forms.PictureBoxSizeMode.StretchImage;
			this.pictureBox.TabIndex = 0;
			this.pictureBox.TabStop = false;
			// 
			// textOutput
			// 
			this.textOutput.Font = new System.Drawing.Font("Arial", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
			this.textOutput.Location = new System.Drawing.Point(192, 16);
			this.textOutput.Multiline = true;
			this.textOutput.Name = "textOutput";
			this.textOutput.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;
			this.textOutput.Size = new System.Drawing.Size(192, 160);
			this.textOutput.TabIndex = 1;
			this.textOutput.Text = "";
			// 
			// buttonOpen
			// 
			this.buttonOpen.Location = new System.Drawing.Point(96, 192);
			this.buttonOpen.Name = "buttonOpen";
			this.buttonOpen.Size = new System.Drawing.Size(80, 24);
			this.buttonOpen.TabIndex = 2;
			this.buttonOpen.Text = "&Open File";
			this.buttonOpen.Click += new System.EventHandler(this.buttonOpen_Click);
			// 
			// buttonSave
			// 
			this.buttonSave.Location = new System.Drawing.Point(224, 192);
			this.buttonSave.Name = "buttonSave";
			this.buttonSave.Size = new System.Drawing.Size(80, 24);
			this.buttonSave.TabIndex = 3;
			this.buttonSave.Text = "&Save Text";
			this.buttonSave.Click += new System.EventHandler(this.buttonSave_Click);
			// 
			// buttonCopy
			// 
			this.buttonCopy.Location = new System.Drawing.Point(320, 192);
			this.buttonCopy.Name = "buttonCopy";
			this.buttonCopy.Size = new System.Drawing.Size(64, 24);
			this.buttonCopy.TabIndex = 4;
			this.buttonCopy.Text = "&Copy";
			this.buttonCopy.Click += new System.EventHandler(this.buttonCopy_Click);
			// 
			// saveFileDialog
			// 
			this.saveFileDialog.DefaultExt = "txt";
			this.saveFileDialog.FileName = "doc1";
			this.saveFileDialog.Filter = "Text files (*.txt)|*.txt|All files (*.*)|*.*";
			// 
			// MainForm
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.ClientSize = new System.Drawing.Size(400, 232);
			this.Controls.AddRange(new System.Windows.Forms.Control[] {
																		  this.buttonCopy,
																		  this.buttonSave,
																		  this.buttonOpen,
																		  this.textOutput,
																		  this.pictureBox});
			this.Name = "MainForm";
			this.Text = "Graphics Converter";
			this.ResumeLayout(false);

		}
		#endregion

		/// <summary>
		/// The main entry point for the application.
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new MainForm());
		}

		private void openImageFile() 
		{
			if(openFileDialog.ShowDialog() == System.Windows.Forms.DialogResult.OK) 
			{
				fileName = openFileDialog.FileName;
				pictureBox.Image = Image.FromFile(fileName);

				if(pictureBox.Image != null) 
				{
					convertImageFile();

					textOutput.SelectAll();
					textOutput.Copy();
				}
			}
			else
				fileName = "";
		}

		private void convertImageFile() 
		{
			Bitmap pictureBitmap;
			Rectangle rect;
			Color pixel;
			int pixels = 0;

			pictureBitmap =  new Bitmap(pictureBox.Image);
			rect = new Rectangle(0, 0, pictureBitmap.Width, pictureBitmap.Height);
			//pictureBitmapData = pictureBitmap.LockBits(rect, System.Drawing.Imaging.ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format24bppRgb);

			int pixelMax = rect.Width * rect.Height;

			System.IO.StringWriter stringBuffer = new System.IO.StringWriter(new System.Text.StringBuilder(pixelMax << 2 + 40));
			stringBuffer.Write("flash unsigned char GRAPHIC_" + fileIndex++ + "[" + (rect.Width * rect.Height / 2) + "] = {\r\n");

			int blockWidth = rect.Width >> 3;
			int blockHeight = rect.Height >> 3;

			int blockRow, blockCol, binX, binY;
			int offsetX, offsetY;

			// convert to text
			for(blockRow = 0; blockRow < blockHeight; blockRow++) 
			{
				for(blockCol = 0; blockCol < blockWidth; blockCol++) 
				{
					// write block comment
					stringBuffer.Write("  // [" + blockCol + "," + blockRow + "] \r\n");

					// block offset
					offsetX = blockCol * 8;
					offsetY = blockRow * 8;

					for(binY = 0; binY < 8; binY++) 
					{
						for(binX = 0; binX < 8; binX++) 
						{
							// get pixel information
							pixel = pictureBitmap.GetPixel(binX + offsetX, binY + offsetY);
							pixels++;

							// write indent
							if(binX % 8 == 0)
								stringBuffer.Write("  ");

							// write high nibble
							if(binX % 2 == 0)
							{
								stringBuffer.Write("0x" + decToHex(pixel.R >> 4, 1));
							}
							// write low nibble
							else
							{
								// check for last pixel
								if(pixels < pixelMax)
									stringBuffer.Write(decToHex(pixel.R >> 4, 1) + ", ");
								else
									stringBuffer.Write(decToHex(pixel.R >> 4, 1) + "\r\n};\r\n");
							}

							// write new bin line
							if(binX % 8 == 7)
							{
								stringBuffer.Write("\r\n");
							}
						}
					}
				}
			}

			// output string
			textOutput.Text = stringBuffer.ToString();

			saveFileDialog.FileName = (openFileDialog.FileName).Substring(0, openFileDialog.FileName.Length - 4) + ".txt";
			if(saveFileDialog.ShowDialog() == System.Windows.Forms.DialogResult.OK) 
			{
				System.IO.StreamWriter fileStream = new System.IO.StreamWriter(saveFileDialog.FileName);
				fileStream.Write(textOutput.Text);
				fileStream.Close();
			}

		}

		private string decToHex(int number, int i)
		{
			int nibble;
			char[] buffer;

			buffer = new char[i];
	
			// iterate over each nibble of number, write right-to-left
			for(i--; i >= 0; i--) 
			{
				// mask lowest-order nibble
				nibble = number & 0xf;

				// combine nibble and ASCII offset to get hex-character
				buffer[i] = (char)(nibble + (int)(nibble >= 10 ? ((int)'A' - 10) : (char)'0'));

				// drop lowest-order nibble from number
				number = number >> 4;
			}

			// return hex string
			return (new String(buffer));
		}

		private void buttonCopy_Click(object sender, System.EventArgs e)
		{
			textOutput.SelectAll();
			textOutput.Copy();
		}

		private void buttonOpen_Click(object sender, System.EventArgs e)
		{
			openImageFile();
		}

		private void buttonSave_Click(object sender, System.EventArgs e)
		{
		
		}
	}
}