Author: coder

Graphics: TranslateClip

Posted on by coder 
   
 

using System;
using System.Drawing;
using System.Drawing.Drawing2D;

using System.Windows.Forms;

class KeyholeClipCentered : Form {
    GraphicsPath path = new GraphicsPath();
    Image image = Image.FromFile("Color.jpg");
    public static void Main() {
        Application.Run(new KeyholeClipCentered());
    }
    public KeyholeClipCentered() {
        ResizeRedraw = true;
        path.AddArc(80, 0, 80, 80, 45, -270);
        path.AddLine(70, 180, 170, 180);
    }
    protected override void OnPaint(PaintEventArgs pea) {
        DoPage(pea.Graphics, ForeColor, ClientSize.Width, ClientSize.Height);
    }
    protected void DoPage(Graphics grfx, Color clr, int cx, int cy) {
        grfx.SetClip(path);

        RectangleF rectf = path.GetBounds();
        int xOffset = (int)((cx - rectf.Width) / 2 - rectf.X);
        int yOffset = (int)((cy - rectf.Height) / 2 - rectf.Y);

        grfx.TranslateClip(xOffset, yOffset);
        grfx.DrawImage(image, xOffset, yOffset, image.Width, image.Height);
    }
}

Graphics Unit: Millimeter

Posted on by coder 


   


  using System;
  using System.Drawing;
  using System.Drawing.Drawing2D;
  using System.Collections;
  using System.ComponentModel;
  using System.Windows.Forms;
  using System.Data;

  public class Form1 : System.Windows.Forms.Form
  {
    public Form1()
    {
      InitializeComponent();
      SetStyle(ControlStyles.ResizeRedraw, true);
    }
    private void InitializeComponent()
    {
      this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
      this.ClientSize = new System.Drawing.Size(400, 400);
      this.Text = "";
      this.Paint += new System.Windows.Forms.PaintEventHandler(this.Form1_Paint);

    }

    static void Main() 
    {
      Application.Run(new Form1());
    }

    private void Form1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
    {
      Graphics g = e.Graphics;

      // Set quality of rendering.
      g.SmoothingMode = SmoothingMode.AntiAlias;
  
      // Configure graphics unit.
      g.PageUnit = GraphicsUnit.Millimeter;

        Point renderingOrgPt = new Point(0,0);

      renderingOrgPt.X = 100;
      renderingOrgPt.Y = 100;

      // Configure origin.
      g.TranslateTransform(renderingOrgPt.X,
        renderingOrgPt.Y);

      g.DrawRectangle(new Pen(Color.Red, 1), 0, 0, 100, 100);
      
      g.Dispose();

    }
  }

Graphics Unit: Display

Posted on by coder 


   


  using System;
  using System.Drawing;
  using System.Drawing.Drawing2D;
  using System.Collections;
  using System.ComponentModel;
  using System.Windows.Forms;
  using System.Data;

  public class Form1 : System.Windows.Forms.Form
  {
    public Form1()
    {
      InitializeComponent();
      SetStyle(ControlStyles.ResizeRedraw, true);
    }
    private void InitializeComponent()
    {
      this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
      this.ClientSize = new System.Drawing.Size(400, 400);
      this.Text = "";
      this.Paint += new System.Windows.Forms.PaintEventHandler(this.Form1_Paint);

    }

    static void Main() 
    {
      Application.Run(new Form1());
    }

    private void Form1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
    {
      Graphics g = e.Graphics;

      // Set quality of rendering.
      g.SmoothingMode = SmoothingMode.AntiAlias;
  
      // Configure graphics unit.
      g.PageUnit = GraphicsUnit.Display;

        Point renderingOrgPt = new Point(0,0);

      renderingOrgPt.X = 100;
      renderingOrgPt.Y = 100;

      // Configure origin.
      g.TranslateTransform(renderingOrgPt.X,
        renderingOrgPt.Y);

      g.DrawRectangle(new Pen(Color.Red, 1), 0, 0, 100, 100);
      
      g.Dispose();

    }
  }

Graphics Unit: Document

Posted on by coder 


   

  using System;
  using System.Drawing;
  using System.Drawing.Drawing2D;
  using System.Collections;
  using System.ComponentModel;
  using System.Windows.Forms;
  using System.Data;

  public class Form1 : System.Windows.Forms.Form
  {
    public Form1()
    {
      InitializeComponent();
      SetStyle(ControlStyles.ResizeRedraw, true);
    }
    private void InitializeComponent()
    {
      this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
      this.ClientSize = new System.Drawing.Size(400, 400);
      this.Text = "";
      this.Paint += new System.Windows.Forms.PaintEventHandler(this.Form1_Paint);

    }

    static void Main() 
    {
      Application.Run(new Form1());
    }

    private void Form1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
    {
      Graphics g = e.Graphics;

      // Set quality of rendering.
      g.SmoothingMode = SmoothingMode.AntiAlias;
  
      // Configure graphics unit.
      g.PageUnit = GraphicsUnit.Document;

        Point renderingOrgPt = new Point(0,0);

      renderingOrgPt.X = 100;
      renderingOrgPt.Y = 100;

      // Configure origin.
      g.TranslateTransform(renderingOrgPt.X,
        renderingOrgPt.Y);

      g.DrawRectangle(new Pen(Color.Red, 1), 0, 0, 100, 100);
      
      g.Dispose();

    }
  }

Graphics Unit: Point

Posted on by coder 


   


  using System;
  using System.Drawing;
  using System.Drawing.Drawing2D;
  using System.Collections;
  using System.ComponentModel;
  using System.Windows.Forms;
  using System.Data;

  public class Form1 : System.Windows.Forms.Form
  {
    public Form1()
    {
      InitializeComponent();
      SetStyle(ControlStyles.ResizeRedraw, true);
    }
    private void InitializeComponent()
    {
      this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
      this.ClientSize = new System.Drawing.Size(400, 400);
      this.Text = "";
      this.Paint += new System.Windows.Forms.PaintEventHandler(this.Form1_Paint);

    }

    static void Main() 
    {
      Application.Run(new Form1());
    }

    private void Form1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
    {
      Graphics g = e.Graphics;

      // Set quality of rendering.
      g.SmoothingMode = SmoothingMode.AntiAlias;
  
      // Configure graphics unit.
      g.PageUnit = GraphicsUnit.Point;

        Point renderingOrgPt = new Point(0,0);

      renderingOrgPt.X = 100;
      renderingOrgPt.Y = 100;

      // Configure origin.
      g.TranslateTransform(renderingOrgPt.X,
        renderingOrgPt.Y);

      g.DrawRectangle(new Pen(Color.Red, 1), 0, 0, 100, 100);
      
      g.Dispose();

    }
  }

illustrates using a graphics file

Posted on by coder 


   

/*
Mastering Visual C# .NET
by Jason Price, Mike Gunderloy

Publisher: Sybex;
ISBN: 0782129110
*/

/*
  Example21_5.cs illustrates using a graphics file
*/

using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

public class Example21_5 : System.Windows.Forms.Form
{
  private System.ComponentModel.Container components = null;

  public Example21_5()
  {
    InitializeComponent();
  }

  protected override void Dispose( bool disposing )
  {
    if( disposing )
    {
      if (components != null) 
      {
        components.Dispose();
      }
    }
    base.Dispose( disposing );
  }

  private void InitializeComponent()
  {
    this.BackColor = System.Drawing.Color.White;
    this.ClientSize = new System.Drawing.Size(400, 400);
    this.Name = "Example21_5";
    this.Text = "Example21_5";
    this.Paint += new System.Windows.Forms.
      PaintEventHandler(this.Example21_5_Paint);
  }


  static void Main() 
  {
    Application.Run(new Example21_5());
  }

  private void Example21_5_Paint(
    object sender, System.Windows.Forms.PaintEventArgs e)
  {
    Graphics g = e.Graphics;
    // Load the image
    Bitmap b = new Bitmap("CSharp.tif");
    // and display it
    g.DrawImage(b, 10, 10, 350, 300);
  }
}

Path Gradient

Posted on by coder 


   

/*
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;

using System.Drawing.Drawing2D;  // PathGradientBrush 

namespace PathGradient
{
    /// <summary>
    /// Summary description for PathGradient.
    /// </summary>
    public class PathGradient : System.Windows.Forms.Form
    {
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.Container components = null;

        public PathGradient()
        {
            //
            // Required for Windows Form Designer support
            //
            InitializeComponent();
            
            this.Text = "PathGradient - CenterPoint";

            //
            // 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()
        {
            // 
            // PathGradient
            // 
            this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
            this.ClientSize = new System.Drawing.Size(256, 213);
            this.Name = "PathGradient";
            this.Text = "PathGradient";

        }
        #endregion

        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main() 
        {
            Application.Run(new PathGradient());
        }
        protected override void OnPaint(PaintEventArgs e)
        {   
            Graphics g = e.Graphics;
            Font f = new Font(new FontFamily("Times New Roman"), 10);
            Brush fb = new SolidBrush(Color.Black);
            GraphicsPath gp;
            PathGradientBrush pGB;  // namespace System.Drawing.Drawing2D;
            Rectangle rec;
            Color cR = Color.Red, cW = Color.White, cY = Color.Yellow;
            int w = 100, h = 70;

            // Left upper rectangle:
            g.DrawString("Center", f, fb, 10, 5);
            gp = new GraphicsPath();
            rec = new Rectangle(10, 20, w, h);
            gp.AddRectangle(rec);
            pGB = new PathGradientBrush(gp);
            pGB.CenterPoint = new Point(10 + w/2, 20 + h/2);
            pGB.CenterColor = cR;
            pGB.SurroundColors = new Color[1]{cW};
            g.FillRectangle(pGB, rec);

            // Right upper rectangle:
            g.DrawString("Center - 2 x 2 Colors", f, fb, w + 20, 5);
            gp = new GraphicsPath();
            rec = new Rectangle(20 + w, 20, w, h);
            gp.AddRectangle(rec);
            pGB = new PathGradientBrush(gp);
            pGB.CenterPoint = new Point(w + 20 + w/2, 20 + h/2);
            pGB.CenterColor = cR;
            pGB.SurroundColors = new Color[4]{cW, cY, cW, cY};
            g.FillRectangle(pGB, rec);

            // Left down rectangle:
            g.DrawString("LefTopCenter", f, fb, 10, h + 25);
            gp = new GraphicsPath();
            rec = new Rectangle(10, h + 40, w, h);
            gp.AddRectangle(rec);
            pGB = new PathGradientBrush(gp);
            pGB.CenterPoint = new Point(10, h + 40);
            pGB.CenterColor = cR;
            pGB.SurroundColors = new Color[1]{cW};
            g.FillRectangle(pGB, rec);

            // Ellipse
            g.DrawString("Top", f, fb, w + 20, h + 25);
            gp = new GraphicsPath();
            rec = new Rectangle(w + 20, h + 40, w, h);
            gp.AddEllipse(rec);
            pGB = new PathGradientBrush(gp);
            pGB.CenterPoint = new Point(w + 20 + w/2, h + 40);
            pGB.CenterColor = cR;
            pGB.SurroundColors = new Color[1]{cW};
            g.FillRectangle(pGB, rec);

            g.Dispose();    
            fb.Dispose();
        }
    }
}