www.pudn.com > PS.rar > FourierDoc.cs
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// Image Processing Lab
//
// Copyright ?Andrew Kirillov, 2005
// andrew.kirillov@gmail.com
//
using System;
using System.Drawing;
using System.Drawing.Imaging;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using WeifenLuo.WinFormsUI;
using AForge;
using AForge.Math;
using AForge.Imaging;
namespace IPLab
{
///
/// Summary description for FourierDoc.
///
public class FourierDoc : Content
{
private ComplexImage image = null;
private ComplexImage backup = null;
private System.Drawing.Bitmap bitmap = null;
private int width;
private int height;
private IDocumentsHost host = null;
private System.Windows.Forms.MainMenu mainMenu;
private System.Windows.Forms.MenuItem fourierItem;
private System.Windows.Forms.MenuItem backwardFourierItem;
private System.Windows.Forms.MenuItem menuItem1;
private System.Windows.Forms.MenuItem frequencyFilterFourierItem;
private System.Windows.Forms.MenuItem undoFourierItem;
private IContainer components;
// Image property
public Bitmap Image
{
get { return bitmap; }
}
// Width property
public int ImageWidth
{
get { return width; }
}
// Height property
public int ImageHeight
{
get { return height; }
}
// Constructors
public FourierDoc( ComplexImage image, IDocumentsHost host )
{
//
// Required for Windows Form Designer support
//
InitializeComponent( );
//
this.host = host;
this.image = image;
width = image.Width;
height = image.Height;
UpdateNewImage( );
// form style
SetStyle( ControlStyles.AllPaintingInWmPaint | ControlStyles.DoubleBuffer | ControlStyles.ResizeRedraw, true );
// init scroll bars
this.AutoScroll = true;
// scroll bar size
this.AutoScrollMinSize = new Size( width, height );
}
///
/// Clean up any resources being used.
///
protected override void Dispose( bool disposing )
{
if ( disposing )
{
if ( components != null )
{
components.Dispose( );
}
if ( bitmap != null )
{
bitmap.Dispose( );
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
///
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
///
private void InitializeComponent( )
{
this.components = new System.ComponentModel.Container();
this.mainMenu = new System.Windows.Forms.MainMenu(this.components);
this.fourierItem = new System.Windows.Forms.MenuItem();
this.backwardFourierItem = new System.Windows.Forms.MenuItem();
this.menuItem1 = new System.Windows.Forms.MenuItem();
this.frequencyFilterFourierItem = new System.Windows.Forms.MenuItem();
this.undoFourierItem = new System.Windows.Forms.MenuItem();
this.SuspendLayout();
//
// mainMenu
//
this.mainMenu.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
this.fourierItem});
//
// fourierItem
//
this.fourierItem.Index = 0;
this.fourierItem.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
this.backwardFourierItem,
this.menuItem1,
this.frequencyFilterFourierItem,
this.undoFourierItem});
this.fourierItem.MergeOrder = 1;
this.fourierItem.Text = "傅立叶变换";
this.fourierItem.Popup += new System.EventHandler(this.fourierItem_Popup);
//
// backwardFourierItem
//
this.backwardFourierItem.Index = 0;
this.backwardFourierItem.Text = "&Backward Transformation";
this.backwardFourierItem.Click += new System.EventHandler(this.backwardFourierItem_Click);
//
// menuItem1
//
this.menuItem1.Index = 1;
this.menuItem1.Text = "-";
//
// frequencyFilterFourierItem
//
this.frequencyFilterFourierItem.Index = 2;
this.frequencyFilterFourierItem.Text = "Frequency Filter";
this.frequencyFilterFourierItem.Click += new System.EventHandler(this.frequencyFilterFourierItem_Click);
//
// undoFourierItem
//
this.undoFourierItem.Index = 3;
this.undoFourierItem.Shortcut = System.Windows.Forms.Shortcut.CtrlZ;
this.undoFourierItem.Text = "&Undo";
this.undoFourierItem.Click += new System.EventHandler(this.undoFourierItem_Click);
//
// FourierDoc
//
this.AllowedStates = WeifenLuo.WinFormsUI.ContentStates.Document;
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.ClientSize = new System.Drawing.Size(576, 453);
this.Menu = this.mainMenu;
this.Name = "FourierDoc";
this.Text = "傅立叶变换";
this.ResumeLayout(false);
}
#endregion
// Update document
private void UpdateNewImage( )
{
if ( bitmap != null )
{
bitmap.Dispose( );
bitmap = null;
}
bitmap = image.ToBitmap( );
Invalidate( );
}
// Paint image
protected override void OnPaint( PaintEventArgs e )
{
if ( bitmap != null )
{
Graphics g = e.Graphics;
Rectangle rc = ClientRectangle;
Pen pen = new Pen( Color.FromArgb( 0, 0, 0 ) );
int x = ( rc.Width < width ) ? this.AutoScrollPosition.X : ( rc.Width - width ) / 2;
int y = ( rc.Height < height ) ? this.AutoScrollPosition.Y : ( rc.Height - height ) / 2;
// draw rectangle around the image
g.DrawRectangle( pen, x - 1, y - 1, width + 1, height + 1 );
// draw image
g.DrawImage( bitmap, x, y, width, height );
pen.Dispose( );
}
}
// Backward Fourier transformation
private void backwardFourierItem_Click( object sender, System.EventArgs e )
{
ComplexImage cimg = (ComplexImage) image.Clone( );
cimg.BackwardFourierTransform( );
host.NewDocument( cimg.ToBitmap( ) );
}
// Frequency filter
private void frequencyFilterFourierItem_Click( object sender, System.EventArgs e )
{
FrequencyFilter form = new FrequencyFilter( );
form.InputRange = new IntRange( 0, width >> 1 );
form.OutputRange = new IntRange( 0, width >> 1 );
if ( form.ShowDialog( ) == DialogResult.OK )
{
backup = (ComplexImage) image.Clone( );
image.FrequencyFilter( form.OutputRange );
UpdateNewImage( );
}
}
// Undo filter
private void undoFourierItem_Click( object sender, System.EventArgs e )
{
if ( backup != null )
{
image = backup;
backup = null;
UpdateNewImage( );
}
}
// On "Fourier" menu popup
private void fourierItem_Popup( object sender, System.EventArgs e )
{
undoFourierItem.Enabled = backup != null;
}
}
}