Csharp/C Sharp by API/System.Drawing/Bitmap — различия между версиями

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Версия 15:31, 26 мая 2010

Bitmap.CompositingMode

 
using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
public class Form1 : Form {
    protected override void OnPaint(PaintEventArgs e) {
    Graphics gForm = e.Graphics;
    gForm.FillRectangle(Brushes.White, this.ClientRectangle);
    for (int i = 1; i <= 7; ++i)
    {
      Rectangle r = new Rectangle(i * 40 - 15, 0, 15,
                    this.ClientRectangle.Height);
      gForm.FillRectangle(Brushes.Orange, r);
    }
    Bitmap bmp = new Bitmap(260, 260,System.Drawing.Imaging.PixelFormat.Format32bppArgb);
    Graphics gBmp = Graphics.FromImage(bmp);
    gBmp.rupositingMode = System.Drawing.Drawing2D.rupositingMode.SourceCopy;
    gForm.DrawImage(bmp, 20, 20, bmp.Width, bmp.Height);
    bmp.Dispose();
    gBmp.Dispose();
    }
    public static void Main() {
        Application.Run(new Form1());
    }
}


Bitmap.Height

 
  using System;
  using System.Drawing;
  using System.Drawing.Drawing2D;
  using System.Collections;
  using System.ruponentModel;
  using System.Windows.Forms;
  using System.Data;
  using System.Drawing.Imaging;
  public class Form1 : System.Windows.Forms.Form
  {
    public Form1()
    {
      InitializeComponent();
    }
    private void InitializeComponent()
    {
      this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
      this.ClientSize = new System.Drawing.Size(292, 273);
      this.Text = "";
      this.Resize += new System.EventHandler(this.Form1_Resize);
      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;
      Bitmap bmp = new Bitmap("winter.jpg");
      Rectangle r = new Rectangle(0, 0, bmp.Width, bmp.Height);
      g.DrawImage(bmp, r, r, GraphicsUnit.Pixel);
    }
    private void Form1_Resize(object sender, System.EventArgs e)
    {
      Invalidate();
    }
  }


Bitmap.HorizontalResolution

 
  using System;
  using System.Drawing;
  using System.Drawing.Drawing2D;
  using System.Collections;
  using System.ruponentModel;
  using System.Windows.Forms;
  using System.Data;
  using System.Drawing.Imaging;
  public class Form1 : System.Windows.Forms.Form
  {
    public Form1()
    {
      InitializeComponent();
    }
    private void InitializeComponent()
    {
      this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
      this.ClientSize = new System.Drawing.Size(292, 273);
      this.Text = "";
      this.Resize += new System.EventHandler(this.Form1_Resize);
      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;
      Bitmap bmp = new Bitmap("winter.jpg");
      g.DrawImage(bmp, 0, 0);
      Console.WriteLine("Screen resolution: " + g.DpiX + "DPI");
      Console.WriteLine("Image resolution: " + bmp.HorizontalResolution + "DPI");
      Console.WriteLine("Image Width: " + bmp.Width);
      Console.WriteLine("Image Height: " + bmp.Height);
      SizeF s = new SizeF(bmp.Width * (g.DpiX / bmp.HorizontalResolution),
                bmp.Height * (g.DpiY / bmp.VerticalResolution));
      Console.WriteLine("Display size of image: " + s);
    }
    private void Form1_Resize(object sender, System.EventArgs e)
    {
      Invalidate();
    }
  }


Bitmap.MakeTransparent( );

  
      
using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
namespace BitmapOther_c
{
    /// <summary>
    /// Summary description for BitmapOther.
    /// </summary>
  public class BitmapOther : System.Windows.Forms.Form
  {
    /// <summary>
    /// Required designer variable.
    /// </summary>
    private System.ruponentModel.Container components = null;
    public BitmapOther()
    {
      //
      // Required for Windows Form Designer support
      //
      InitializeComponent();
      //
      // 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()
    {
      // 
      // BitmapOther
      // 
      this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
      this.ClientSize = new System.Drawing.Size(292, 273);
      this.Name = "BitmapOther";
      this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
      this.Text = "BitmapOther";
      this.Load += new System.EventHandler(this.BitmapOther_Load);
    }
        #endregion
    /// <summary>
    /// The main entry point for the application.
    /// </summary>
    [STAThread]
    static void Main() 
    {
      Application.Run(new BitmapOther());
    }
    private void BitmapOther_Load(object sender, System.EventArgs e)
    {
    
    }
    protected override void OnPaint ( PaintEventArgs e )
    {
      Bitmap BMP = new Bitmap("Colorbars.JPG");
      Point Pt = new Point(20,20);
   //   BMP.SetPixel(15,20,Color.Black);
      BMP.MakeTransparent( BMP.GetPixel(15,25) );
      e.Graphics.DrawImage(BMP, Pt);
      e.Graphics.DrawLine(new Pen(Brushes.GreenYellow,30),60,60,200,60);

      
    }
   }
    }


Bitmap.PhysicalDimension

 

using System;
using System.IO;
using System.Drawing;
   
class MainClass
{
    static public void Main()
    {
        Bitmap img = new Bitmap("winter.jpg");
        
        Console.WriteLine(img.PhysicalDimension.ToString() );
        Console.WriteLine(img.Height.ToString() );
        Console.WriteLine(img.Width.ToString() );
        Console.WriteLine(img.RawFormat.ToString() );
        Console.WriteLine(img.Size.ToString() );
    }
}


Bitmap.PixelFormat

 

using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.Text;
using System.Windows.Forms;
public class MainClass {
    public static void Main() {
        // Create two new bitmap images
        Bitmap bmp1 = new Bitmap(100, 100, PixelFormat.Format32bppArgb);
        Bitmap bmp2 = new Bitmap(100, 100, PixelFormat.Format24bppRgb);
        // Test for alpha 
        bool b1 = ((bmp1.PixelFormat & PixelFormat.Alpha) != 0);
        bool b2 = ((bmp2.PixelFormat & PixelFormat.Alpha) != 0);
        // Output results to console window
        Console.WriteLine("bmp1 has alpha?: " + b1);
        Console.WriteLine("bmp2 has alpha?: " + b2);
        // Clean up
        bmp1.Dispose();
        bmp2.Dispose();
    }
}


Bitmap.RawFormat

 

using System;
using System.IO;
using System.Drawing;
   
class MainClass
{
    static public void Main()
    {
        Bitmap img = new Bitmap("winter.jpg");
        
        Console.WriteLine(img.PhysicalDimension.ToString() );
        Console.WriteLine(img.Height.ToString() );
        Console.WriteLine(img.Width.ToString() );
        Console.WriteLine(img.RawFormat.ToString() );
        Console.WriteLine(img.Size.ToString() );
    }
}


Bitmap.SetResolution(600f, 600f);

 
  using System;
  using System.Drawing;
  using System.Drawing.Drawing2D;
  using System.Collections;
  using System.ruponentModel;
  using System.Windows.Forms;
  using System.Data;
  using System.Drawing.Imaging;
  public class Form1 : System.Windows.Forms.Form
  {
    public Form1()
    {
      InitializeComponent();
    }
    private void InitializeComponent()
    {
      this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
      this.ClientSize = new System.Drawing.Size(292, 273);
      this.Text = "";
      this.Resize += new System.EventHandler(this.Form1_Resize);
      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;
      Bitmap bmp = new Bitmap("winter.jpg");
      g.FillRectangle(Brushes.White, this.ClientRectangle);
      bmp.SetResolution(600f, 600f);
      g.DrawImage(bmp, 0, 0);
      bmp.SetResolution(1200f, 1200f);
      g.DrawImage(bmp, 180, 0);
    }
    private void Form1_Resize(object sender, System.EventArgs e)
    {
      Invalidate();
    }
  }


Bitmap.Size

 
using System;
using System.IO;
using System.Drawing;
   
class MainClass
{
    static public void Main()
    {
        Bitmap img = new Bitmap("winter.jpg");
        
        Console.WriteLine(img.PhysicalDimension.ToString() );
        Console.WriteLine(img.Height.ToString() );
        Console.WriteLine(img.Width.ToString() );
        Console.WriteLine(img.RawFormat.ToString() );
        Console.WriteLine(img.Size.ToString() );
    }
}


Bitmap.Width

  
  using System;
  using System.Drawing;
  using System.Drawing.Drawing2D;
  using System.Collections;
  using System.ruponentModel;
  using System.Windows.Forms;
  using System.Data;
  using System.Drawing.Imaging;
  public class Form1 : System.Windows.Forms.Form
  {
    public Form1()
    {
      InitializeComponent();
    }
    private void InitializeComponent()
    {
      this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
      this.ClientSize = new System.Drawing.Size(292, 273);
      this.Text = "";
      this.Resize += new System.EventHandler(this.Form1_Resize);
      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;
      Bitmap bmp = new Bitmap("winter.jpg");
      Rectangle r = new Rectangle(0, 0, bmp.Width, bmp.Height);
      g.DrawImage(bmp, this.ClientRectangle);
    }
    private void Form1_Resize(object sender, System.EventArgs e)
    {
      Invalidate();
    }
  }


new Bitmap(String fileName)

  
using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
public class Form1 : Form {
    protected override void OnPaint(PaintEventArgs e) {
    Graphics g = e.Graphics;
    Bitmap bmp = new Bitmap("rama.jpg");
    Rectangle r = new Rectangle(0, 0, bmp.Width, bmp.Height);
    g.DrawImage(bmp, r, r, GraphicsUnit.Pixel);
    }
    public static void Main() {
        Application.Run(new Form1());
    }
}
Источник — «http://nfex.ru/index.php?title=Csharp/C_Sharp_by_API/System.Drawing/Bitmap&oldid=4609»