Mega Code Archive

 

Categories / C# / 2D Graphics

 

Image Zoom

using System; using System.Drawing; using System.Collections; using System.ComponentModel; using System.Windows.Forms; using System.Data; public class Form1 : System.Windows.Forms.Form {     private System.Windows.Forms.Label label1= new System.Windows.Forms.Label();     private System.Windows.Forms.GroupBox groupBox1= new System.Windows.Forms.GroupBox();     private System.Windows.Forms.RadioButton radioButton1= new System.Windows.Forms.RadioButton();     private System.Windows.Forms.RadioButton radioButton2= new System.Windows.Forms.RadioButton();     private System.Windows.Forms.RadioButton radioButton3= new System.Windows.Forms.RadioButton();     private System.Windows.Forms.RadioButton radioButton4= new System.Windows.Forms.RadioButton();     private System.Windows.Forms.Label label2= new System.Windows.Forms.Label();     private System.Windows.Forms.CheckBox checkBox1= new System.Windows.Forms.CheckBox();     Image im = null;     Image im2 = null;     public Form1() {         this.groupBox1.SuspendLayout();         this.SuspendLayout();         this.label1.Location = new System.Drawing.Point(8, 16);         this.label1.Size = new System.Drawing.Size(200, 240);         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.Size = new System.Drawing.Size(72, 128);         this.checkBox1.Location = new System.Drawing.Point(8, 32);         this.checkBox1.Size = new System.Drawing.Size(56, 24);         this.checkBox1.CheckedChanged += new System.EventHandler(this.checkBox1_CheckedChanged);         this.radioButton1.Location = new System.Drawing.Point(8, 64);         this.radioButton1.Size = new System.Drawing.Size(16, 24);         this.radioButton2.Location = new System.Drawing.Point(40, 64);         this.radioButton2.Size = new System.Drawing.Size(16, 24);         this.radioButton3.Location = new System.Drawing.Point(8, 96);         this.radioButton3.Size = new System.Drawing.Size(16, 24);         this.radioButton4.Location = new System.Drawing.Point(40, 96);         this.radioButton4.Size = new System.Drawing.Size(16, 24);         this.label2.Location = new System.Drawing.Point(328, 16);         this.label2.Size = new System.Drawing.Size(200, 240);         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.groupBox1.ResumeLayout(false);         this.ResumeLayout(false);         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);     }     [STAThread]     static void Main() {         Application.Run(new Form1());     }     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);             recPart = new Rectangle(im.Width / 4, im.Height / 4, im.Width / 2, im.Height / 2);             if (this.radioButton1.Checked)                 recPart = new Rectangle(0, 0, im.Width / 2, im.Height / 2);             if (this.radioButton2.Checked)                 recPart = new Rectangle(im.Width / 2, 0, im.Width / 2, im.Height / 2);             if (this.radioButton3.Checked)                 recPart = new Rectangle(0, im.Height / 2, im.Width / 2, im.Height / 2);             if (this.radioButton4.Checked)                 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 = "3.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;     } }