Image Zoom 1
/*
Professional Windows GUI Programming Using C#
by Jay Glynn, Csaba Torok, Richard Conway, Wahid Choudhury,
Zach Greenvoss, Shripad Kulkarni, Neil Whitlow
Publisher: Peer Information
ISBN: 1861007663
*/
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
namespace ImageZoom
{
/// <summary>
/// Summary description for ImageZoom.
/// </summary>
public class ImageZoom1 : System.Windows.Forms.Form
{
private System.Windows.Forms.Label label1;
private System.Windows.Forms.GroupBox groupBox1;
private System.Windows.Forms.RadioButton radioButton1;
private System.Windows.Forms.RadioButton radioButton2;
private System.Windows.Forms.RadioButton radioButton3;
private System.Windows.Forms.RadioButton radioButton4;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.CheckBox checkBox1;
Image im = null;
Image im2 = null;
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.Container components = null;
public ImageZoom1()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
this.Text = "Zooming";
this.label1.Text = "";
this.groupBox1.Text = "Zoom";
this.checkBox1.Text = "Paint";
this.radioButton1.Checked = false;
this.radioButton1.CheckedChanged += new System.EventHandler(this.radioButtons_CheckedChanged);
this.radioButton2.CheckedChanged += new System.EventHandler(this.radioButtons_CheckedChanged);
this.radioButton3.CheckedChanged += new System.EventHandler(this.radioButtons_CheckedChanged);
this.radioButton4.CheckedChanged += new System.EventHandler(this.radioButtons_CheckedChanged);
//
// 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.label1 = new System.Windows.Forms.Label();
this.groupBox1 = new System.Windows.Forms.GroupBox();
this.checkBox1 = new System.Windows.Forms.CheckBox();
this.radioButton1 = new System.Windows.Forms.RadioButton();
this.radioButton2 = new System.Windows.Forms.RadioButton();
this.radioButton3 = new System.Windows.Forms.RadioButton();
this.radioButton4 = new System.Windows.Forms.RadioButton();
this.label2 = new System.Windows.Forms.Label();
this.groupBox1.SuspendLayout();
this.SuspendLayout();
//
// label1
//
this.label1.Location = new System.Drawing.Point(8, 16);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(200, 240);
this.label1.TabIndex = 0;
this.label1.Text = "label1";
//
// groupBox1
//
this.groupBox1.Controls.AddRange(new System.Windows.Forms.Control[] {
this.checkBox1,
this.radioButton1,
this.radioButton2,
this.radioButton3,
this.radioButton4});
this.groupBox1.Location = new System.Drawing.Point(232, 48);
this.groupBox1.Name = "groupBox1";
this.groupBox1.Size = new System.Drawing.Size(72, 128);
this.groupBox1.TabIndex = 1;
this.groupBox1.TabStop = false;
this.groupBox1.Text = "groupBox1";
//
// checkBox1
//
this.checkBox1.Location = new System.Drawing.Point(8, 32);
this.checkBox1.Name = "checkBox1";
this.checkBox1.Size = new System.Drawing.Size(56, 24);
this.checkBox1.TabIndex = 1;
this.checkBox1.Text = "checkBox1";
this.checkBox1.CheckedChanged += new System.EventHandler(this.checkBox1_CheckedChanged);
//
// radioButton1
//
this.radioButton1.Location = new System.Drawing.Point(8, 64);
this.radioButton1.Name = "radioButton1";
this.radioButton1.Size = new System.Drawing.Size(16, 24);
this.radioButton1.TabIndex = 0;
this.radioButton1.Text = "radioButton1";
//
// radioButton2
//
this.radioButton2.Location = new System.Drawing.Point(40, 64);
this.radioButton2.Name = "radioButton2";
this.radioButton2.Size = new System.Drawing.Size(16, 24);
this.radioButton2.TabIndex = 0;
this.radioButton2.Text = "radioButton1";
//
// radioButton3
//
this.radioButton3.Location = new System.Drawing.Point(8, 96);
this.radioButton3.Name = "radioButton3";
this.radioButton3.Size = new System.Drawing.Size(16, 24);
this.radioButton3.TabIndex = 0;
this.radioButton3.Text = "radioButton1";
//
// radioButton4
//
this.radioButton4.Location = new System.Drawing.Point(40, 96);
this.radioButton4.Name = "radioButton4";
this.radioButton4.Size = new System.Drawing.Size(16, 24);
this.radioButton4.TabIndex = 0;
this.radioButton4.Text = "radioButton1";
//
// label2
//
this.label2.Location = new System.Drawing.Point(328, 16);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(200, 240);
this.label2.TabIndex = 0;
this.label2.Text = "label1";
//
// ImageZoom
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(536, 266);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.groupBox1,
this.label1,
this.label2});
this.Name = "ImageZoom";
this.Text = "ImageZoom";
this.groupBox1.ResumeLayout(false);
this.ResumeLayout(false);
}
#endregion
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new ImageZoom1());
}
protected override void OnPaint(PaintEventArgs e)
{ ImageZoom(); }
private void checkBox1_CheckedChanged(object sender, System.EventArgs e)
{ ImageZoom(); }
private void radioButtons_CheckedChanged(object sender, System.EventArgs e)
{ ImageZoom(); }
protected void ImageZoom()
{
Graphics g1 = Graphics.FromHwnd(this.label1.Handle);
Graphics g2 = Graphics.FromHwnd(this.label2.Handle);
Rectangle rec;
Rectangle recPart;
if (this.checkBox1.Checked)
{
if (im == null) ReadImage();
rec = new Rectangle(0, 0, label1.Width, label1.Height);
g1.DrawImage(im, rec);
// Center part:
recPart = new Rectangle(im.Width/4, im.Height/4, im.Width/2,
im.Height/2);
if(this.radioButton1.Checked) // Left-Top part
recPart = new Rectangle(0, 0, im.Width/2, im.Height/2);
if(this.radioButton2.Checked) // Right-Top part
recPart = new Rectangle(im.Width/2, 0, im.Width/2, im.Height/2);
if(this.radioButton3.Checked) // Left-Down part
recPart = new Rectangle(0, im.Height/2, im.Width/2, im.Height/2);
if(this.radioButton4.Checked) // Right-Down part
recPart = new Rectangle(im.Width/2, im.Height/2, im.Width/2,
im.Height/2);
g2.DrawImage(im, rec, recPart, GraphicsUnit.Pixel);
}
else
{
Clear(g1);
Clear(g2);
}
g1.Dispose(); g2.Dispose();
}
protected void ReadImage()
{
string path = @"szeret3.BMP";
im = Image.FromFile(path);
this.radioButton1.Enabled = true;
this.radioButton2.Enabled = true;
this.radioButton3.Enabled = true;
this.radioButton4.Enabled = true;
}
protected void Clear(Graphics g)
{
g.Clear(this.BackColor);
g.Dispose();
im = null;
im2 = null;
this.radioButton1.Checked = false;
this.radioButton2.Checked = false;
this.radioButton3.Checked = false;
this.radioButton4.Checked = false;
this.radioButton1.Enabled = false;
this.radioButton2.Enabled = false;
this.radioButton3.Enabled = false;
this.radioButton4.Enabled = false;
}
}
}
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