frmshow.cs

album software on smartphone, using visual studio. net 2005 in C#

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

namespace SmartPhoneAlbum
{
	/// <summary>
	/// Summary description for frmShow.
	/// </summary>
	public class frmShow : System.Windows.Forms.Form
	{
		private Form parentForm;//Form parentForm
		private PictureBox pictureBox1;//to display picture
		private Bitmap imgBuffer=null;//buffer bitmap
		private Image imgLarge;//save large image
		private Bitmap imgGrey = null;//mono Bitmap
		private Bitmap imgBuff;//image buffer
		private Bitmap imgPan;//image pan
		private MainMenu mainMenu1;
		private MenuItem menuItem1;
		private MenuItem menuItem2;
		private MenuItem menuItem3;
		private MenuItem menuItem4;
		private MenuItem menuItem5;
		private bool bTurn = false;
		private bool bGrey = false;
		private MenuItem menuItem6;
		public string strImgFile;//file name

                private Bitmap histogramBMP;//hostogram
                private int[] histogram;
   
		

		private int xOffset, yOffset,xDif,yDif;//to scrolling picture this variables required
		Rectangle rectBuff;
		private MenuItem menuItem7;
		private MenuItem menuItem8;		
	
		public frmShow(Form parentForm)
		{
            histogram = new int[256];
			InitializeComponent();
			this.parentForm = parentForm;
		}

		#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.pictureBox1 = new System.Windows.Forms.PictureBox();
            this.mainMenu1 = new System.Windows.Forms.MainMenu();
            this.menuItem1 = new System.Windows.Forms.MenuItem();
            this.menuItem2 = new System.Windows.Forms.MenuItem();
            this.menuItem3 = new System.Windows.Forms.MenuItem();
            this.menuItem4 = new System.Windows.Forms.MenuItem();
            this.menuItem5 = new System.Windows.Forms.MenuItem();
            this.menuItem6 = new System.Windows.Forms.MenuItem();
            this.menuItem7 = new System.Windows.Forms.MenuItem();
            // 
            // pictureBox1
            // 
            this.pictureBox1.Location = new System.Drawing.Point(0, 0);
            this.pictureBox1.Size = new System.Drawing.Size(176, 179);
            // 
            // mainMenu1
            // 
            this.mainMenu1.MenuItems.Add(this.menuItem1);
            this.mainMenu1.MenuItems.Add(this.menuItem2);
            // 
            // menuItem1
            // 
            this.menuItem1.Text = "Back";
            this.menuItem1.Click += new System.EventHandler(this.menuItem1_Click);
            // 
            // menuItem2
            // 
            this.menuItem2.MenuItems.Add(this.menuItem3);
            this.menuItem2.MenuItems.Add(this.menuItem4);
            this.menuItem2.MenuItems.Add(this.menuItem5);
            this.menuItem2.MenuItems.Add(this.menuItem6);
            this.menuItem2.MenuItems.Add(this.menuItem7);
            this.menuItem2.Text = "Menu";
            // 
            // menuItem3
            // 
            this.menuItem3.Text = "Center";
            this.menuItem3.Click += new System.EventHandler(this.menuItem3_Click);
            // 
            // menuItem4
            // 
            this.menuItem4.Text = "Stretch";
            this.menuItem4.Click += new System.EventHandler(this.menuItem4_Click);
            // 
            // menuItem5
            // 
            this.menuItem5.Text = "Normal";
            this.menuItem5.Click += new System.EventHandler(this.menuItem5_Click);
            // 
            // menuItem6
            // 
            this.menuItem6.Text = "Mono-Colored";
            this.menuItem6.Click += new System.EventHandler(this.menuItem6_Click);
            // 
            // menuItem7
            // 
            this.menuItem7.Text = "Histogram";
            this.menuItem7.Click += new System.EventHandler(this.menuItem7_Click);
            // 
            // frmShow
            // 
            this.ClientSize = new System.Drawing.Size(176, 180);
            this.Controls.Add(this.pictureBox1);
            this.Menu = this.mainMenu1;
            this.Load += new System.EventHandler(this.frmShow_Load);
            this.Paint += new System.Windows.Forms.PaintEventHandler(this.frmShow_Paint);
            this.Closing += new System.ComponentModel.CancelEventHandler(this.frmShow_Closing);
            this.KeyDown += new System.Windows.Forms.KeyEventHandler(this.frmShow_KeyDown);

		}

		#endregion

		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose(bool disposing)
		{
			base.Dispose(disposing);
		}
		
        /// <summary>
        /// to open picture file from strImgFile
        /// </summary>	
	        private void frmShow_Load(object sender, EventArgs e)
		{

			imgLarge = new Bitmap(strImgFile);//picture is loaded from strImgFile which assigned by frmMain
			pictureBox1.Image = imgLarge;
			xOffset = 0; yOffset = 0;
			imgPan = new Bitmap(imgLarge);
			xDif = imgLarge.Width - pictureBox1.Width;
			yDif = imgLarge.Height - pictureBox1.Height;
			if (xDif < 0)
				xDif = 0;
			if (yDif < 0)
				yDif = 0;


		}

		private void menuItem1_Click(object sender, EventArgs e)
		{
			this.Close();
		}

		private void menuItem3_Click(object sender, EventArgs e)
		{
			pictureBox1.SizeMode = System.Windows.Forms.PictureBoxSizeMode.CenterImage;
		}

		private void menuItem4_Click(object sender, EventArgs e)
		{
			pictureBox1.SizeMode = System.Windows.Forms.PictureBoxSizeMode.StretchImage;
		}

		private void menuItem5_Click(object sender, EventArgs e)
		{
			pictureBox1.SizeMode = System.Windows.Forms.PictureBoxSizeMode.Normal;
		}

		private void frmShow_Closing(object sender, System.ComponentModel.CancelEventArgs e)
		{
			
		}
     
        /// <summary>
        /// gary<->color
        /// </summary>
		private void TurnToGrey()
		{
			Cursor.Current = Cursors.WaitCursor;
			Color pixel;
			int t;
			if (imgGrey == null) 
				imgGrey = new Bitmap(pictureBox1.Image);
			if(imgBuffer==null)
				imgBuffer = new Bitmap(imgGrey);
			if (!bTurn)
			{
				if (!bGrey)
				{
					for (int y = 0; y < pictureBox1.Image.Height; y++)
					{
						for (int x = 0; x < pictureBox1.Image.Width; x++)
						{
							pixel = imgGrey.GetPixel(x, y);
							t = (pixel.R + pixel.G + pixel.B) / 3;
							imgGrey.SetPixel(x, y, Color.FromArgb(t, t, t));
						}
					}
					bGrey = true;
				}
				pictureBox1.Image = imgGrey;
				bTurn = true;
				
			}
			else
			{
				pictureBox1.Image = imgBuffer;
				bTurn = false;
				
			}
			Cursor.Current = Cursors.Default;

		}
        /// <summary>
        /// show histo gram
        /// </summary>			
		private void show_histo()
		{
            Color pixel;
           // Cursor.Current = Cursors.WaitCursor;
          
          
            if (imgGrey == null)
                imgGrey = new Bitmap(pictureBox1.Image);   
           


           
            

                    for (int y = 0; y < pictureBox1.Image.Height; y++)
                    {
                        for (int x = 0; x < pictureBox1.Image.Width; x++)
                        {
                            pixel = imgGrey.GetPixel(x, y);
                            int grayLevel = (pixel.R + pixel.G + pixel.B) / 3;                           
                            histogram[grayLevel]++;

                        }
                    }
                   
                
                pictureBox1.Image = imgGrey;


            

            

            histogramBMP = new Bitmap(176, 180);
            
           
            for (int i = 0; i < 176; i++)
            {
                for (int j = 0; j < 180; j++)
                {
                    histogramBMP.SetPixel(i, j, Color.White);
                }
            }


            Graphics g = Graphics.FromImage(histogramBMP);
            Pen myPen = new Pen(Color.DarkGray);
            g.DrawLine(myPen, 4, 150,100, 150); //X-axis
            g.DrawLine(myPen, 4, 150,4, 6); //Y-axis				
            float totalPoints = pictureBox1.Image.Height * pictureBox1.Image.Width;
            
            for (int i = 0; i < 150; i++)
            {
                Pen myPen2 = new Pen(Color.Red);



                g.DrawLine(myPen2, 4 + i, 150, 4 + i, 150 - histogram[i]/10);
               
                /*
                if (i > 0 && i % 20 == 0)
                {
                    SolidBrush drawBrush = new SolidBrush(Color.Black);
                    Font drawFont = new Font("Arial",5);
                    String drawString = i.ToString();
                    //g.DrawString(drawString, drawFont, drawBrush, 4 ,2 * i, 41);
                   // g.DrawString(drawString, drawFont, drawBrush, 4, 2 * i, 41);
                }*/
            }

            pictureBox1.Image = histogramBMP;
		}

        /// <summary>
        /// save gray picture
        /// </summary>  
         private void save_gray()
        {
            Color pixel;

           	for(int i=0;i<pictureBox1.Image.Height;i++)
			{
				for(int j=0;j<pictureBox1.Image.Width;j++)
				{					
					pixel = imgGrey.GetPixel(i, j);
                    
                    int grayLevel = (pixel.R+pixel.G+pixel.B) /3;

                   // int grayLevel = 3;
                    
				}
			}

        }
        /// <summary>
        /// 
        /// </summary>	
		private void menuItem6_Click(object sender, EventArgs e)
		{
			if (!bTurn)
			{
				menuItem6.Text = "Multi-Colored";
				TurnToGrey();	
				imgPan = new Bitmap(imgGrey);
			}
			else
			{
				menuItem6.Text = "Mono-Colored";
				TurnToGrey();
				imgPan = new Bitmap(imgLarge);
			}
		}

		
        /// <summary>
        /// key event
        /// </summary>	
                private void frmShow_KeyDown(object sender, KeyEventArgs e)
		{
			if ((e.KeyCode == System.Windows.Forms.Keys.F1))
			{
				// left softkey
				// Not handled when menu is present.
			}
			if ((e.KeyCode == System.Windows.Forms.Keys.F2))
			{
				// right softkey
				// Not handled when menu is present.
			}
			if ((e.KeyCode == System.Windows.Forms.Keys.Up))
			{
				if (yDif != 0)
				{
					if (yOffset >= 0 && yOffset <= yDif)
						yOffset--;
					else if (yOffset < 0)
						yOffset = 0;
					Invalidate();
				}
			}
			if ((e.KeyCode == System.Windows.Forms.Keys.Down))
			{
				// dpad-down
				if (yOffset >= 0 && yOffset < yDif)
					yOffset++;
				else if (yOffset > yDif)
					yOffset = 0;
				Invalidate();
			}
			if ((e.KeyCode == System.Windows.Forms.Keys.Left))
			{
				// dpad-left
				if (xDif != 0)
				{
					if (xOffset >= 0 && xOffset <= xDif)
						xOffset--;
					else if (xOffset < 0)
						xOffset = 0;
				}
				Invalidate();
			}
			if ((e.KeyCode == System.Windows.Forms.Keys.Right))
			{
				// dpad-right
				if (xOffset >= 0 && xOffset < xDif)
					xOffset++;
				else if (xOffset >  xDif)
					xOffset = 0;

				Invalidate();
			}
			if ((e.KeyCode == System.Windows.Forms.Keys.Enter))
			{
				// dpad-action
			}
			if ((e.KeyCode == System.Windows.Forms.Keys.D1))
			{
				// num pad 1
			}
			if ((e.KeyCode == System.Windows.Forms.Keys.D2))
			{
				// num pad 2
			}
			if ((e.KeyCode == System.Windows.Forms.Keys.D3))
			{
				// num pad 3
			}
			if ((e.KeyCode == System.Windows.Forms.Keys.D4))
			{
				// num pad 4
			}
			if ((e.KeyCode == System.Windows.Forms.Keys.D5))
			{
				// num pad 5
			}
			if ((e.KeyCode == System.Windows.Forms.Keys.D6))
			{
				// num pad 6
			}
			if ((e.KeyCode == System.Windows.Forms.Keys.D7))
			{
				// num pad 7
			}
			if ((e.KeyCode == System.Windows.Forms.Keys.D8))
			{
				// num pad 8
			}
			if ((e.KeyCode == System.Windows.Forms.Keys.D9))
			{
				// num pad 9
			}
			if ((e.KeyCode == System.Windows.Forms.Keys.F8))
			{
				// num pad *
			}
			if ((e.KeyCode == System.Windows.Forms.Keys.D0))
			{
				// num pad 0
			}
			if ((e.KeyCode == System.Windows.Forms.Keys.F9))
			{
				// num pad #
			}

		}
        /// <summary>
        /// paint
        /// </summary>	
		private void frmShow_Paint(object sender, PaintEventArgs e)
		{
			
			
				if (menuItem7.Checked == true)
				{
					if (imgBuff == null)
					{
						imgBuff = new Bitmap(pictureBox1.Image.Width, pictureBox1.Image.Height);

					}
//the picture is buffered for scrolling
					using (Graphics g = Graphics.FromImage(imgBuff))
					{
						g.Clear(Color.White);
						rectBuff = new Rectangle(xOffset, yOffset, pictureBox1.Image.Width, pictureBox1.Image.Height);
						g.DrawImage(imgPan, 0, 0, rectBuff, GraphicsUnit.Pixel);
					}
					pictureBox1.Image = imgBuff;
				}
			

		}
        /// <summary>
        /// histogram
        /// </summary>	
		private void menuItem7_Click(object sender, EventArgs e)
		{
			/*
			if (menuItem7.Checked == false)
			{
				menuItem7.Checked = true;
			}
			else if (menuItem7.Checked == true)
			{
				menuItem7.Checked = false;
			}*/
			show_histo();
		
		}

	}
}