Csharp/C Sharp/GUI Windows Form/Bitmap
Содержание
Bitmap Color
<source lang="csharp"> /* GDI+ Programming in C# and VB .NET by Nick Symmonds Publisher: Apress ISBN: 159059035X
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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 BitmapColor_c {
/// <summary> /// Summary description for Form1. /// </summary> public class BitmapColor : System.Windows.Forms.Form { /// <summary> /// Required designer variable. /// </summary> private System.ruponentModel.Container components = null; public BitmapColor() { // // 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 ); } /// <summary> /// Required method for Designer support - do not modify /// the contents of this method with the code editor. /// </summary> private void InitializeComponent() { // // Form1 // this.AutoScaleBaseSize = new System.Drawing.Size(5, 13); this.ClientSize = new System.Drawing.Size(292, 273); this.Name = "Form1"; this.Text = "Form1"; this.Load += new System.EventHandler(this.Form1_Load); }
/// <summary> /// The main entry point for the application. /// </summary> [STAThread] static void Main() { Application.Run(new BitmapColor()); } private void Form1_Load(object sender, System.EventArgs e) { ColorPalette cp; String s; Bitmap bmp = new Bitmap("crane.jpg"); cp = bmp.Palette; foreach (Color c in cp.Entries) { s = c.ToString(); } } protected override void OnPaint(PaintEventArgs e) { Bitmap bmp = new Bitmap("crane.jpg"); Color c; e.Graphics.DrawImage( bmp, 10, 30 ); for ( int x=0; x<bmp.Width-1; x++ ) { for ( int y=0; y<bmp.Height-1; y++ ) { c = bmp.GetPixel( x, y ); c = Color.FromArgb( c.ToArgb() + 100 ); bmp.SetPixel( x, y, c ); } } e.Graphics.DrawImage( bmp, 150, 30 ); } }
}
</source>
<A href="http://www.nfex.ru/Code/CSharpDownload/BitmapColor-c.zip">BitmapColor-c.zip( 7 k)</a>
Bitmap Demo
<source lang="csharp"> /* GDI+ Programming in C# and VB .NET by Nick Symmonds Publisher: Apress ISBN: 159059035X
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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 BitMapExt_c {
/// <summary> /// Summary description for Form1. /// </summary> public class BitMapExt : System.Windows.Forms.Form { #region Class Local Variables private Bitmap WholeBMP; private Bitmap SaveBMP; private Bitmap TLBMP; private Bitmap TRBMP; private Bitmap BLBMP; private Bitmap BRBMP; private Rectangle DrawRect; private Point TLpt; private Point TRpt; private Point BLpt; private Point BRpt; private int Counter = 0; private ImageAttributes Ia; #endregion private System.ruponentModel.IContainer components; private System.Windows.Forms.Timer T1; private System.Windows.Forms.Button cmdGo;
public BitMapExt() { InitializeComponent(); this.SetStyle(ControlStyles.DoubleBuffer, true); this.SetStyle(ControlStyles.AllPaintingInWmPaint, true); WholeBMP = new Bitmap("crane.jpg"); DrawRect = new Rectangle(0, 0, WholeBMP.Width, WholeBMP.Height); DrawRect.X = this.Width/2 - WholeBMP.Width/2; DrawRect.Y = this.Height/2 - WholeBMP.Height/2; T1.Interval = 75; T1.Enabled = false; } protected override void Dispose( bool disposing ) { if( disposing ) { if (components != null) { components.Dispose(); } } if (WholeBMP != null) WholeBMP.Dispose(); if (SaveBMP != null) SaveBMP.Dispose(); if (TLBMP != null) TLBMP.Dispose(); if (TRBMP != null) TRBMP.Dispose(); if (BLBMP != null) BLBMP.Dispose(); if (BRBMP != null) BRBMP.Dispose(); if (Ia != null) Ia.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.ruponents = new System.ruponentModel.Container(); this.cmdGo = new System.Windows.Forms.Button(); this.T1 = new System.Windows.Forms.Timer(this.ruponents); this.SuspendLayout(); // // cmdGo // this.cmdGo.Location = new System.Drawing.Point(328, 336); this.cmdGo.Name = "cmdGo"; this.cmdGo.Size = new System.Drawing.Size(48, 24); this.cmdGo.TabIndex = 0; this.cmdGo.Text = "GO"; this.cmdGo.Click += new System.EventHandler(this.Explode); // // T1 // this.T1.Tick += new System.EventHandler(this.T1_Tick); // // Form1 // this.AutoScaleBaseSize = new System.Drawing.Size(5, 13); this.ClientSize = new System.Drawing.Size(392, 373); this.Controls.AddRange(new System.Windows.Forms.Control[] { this.cmdGo}); this.MaximizeBox = false; this.MinimizeBox = false; this.Name = "Form1"; this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen; this.Text = "Exploding Bitmap"; this.Load += new System.EventHandler(this.Form1_Load); this.ResumeLayout(false); } #endregion [STAThread] static void Main() { Application.Run(new BitMapExt()); } private void Form1_Load(object sender, System.EventArgs e) { } protected override void OnPaint(PaintEventArgs e) { Graphics G = e.Graphics; if ( WholeBMP != null ) { G.DrawImage(WholeBMP, DrawRect); return; } if ( TLBMP != null ) G.DrawImage( TLBMP, new Rectangle(TLpt, TLBMP.Size), 0, 0, TLBMP.Width, TLBMP.Height, GraphicsUnit.Pixel, Ia ); if ( TRBMP != null ) G.DrawImage( TRBMP, new Rectangle(TRpt, TRBMP.Size), 0, 0, TRBMP.Width, TRBMP.Height, GraphicsUnit.Pixel, Ia ); if ( BLBMP != null ) G.DrawImage( BLBMP, new Rectangle(BLpt, BLBMP.Size), 0, 0, BLBMP.Width, BLBMP.Height, GraphicsUnit.Pixel, Ia ); if ( BRBMP != null ) G.DrawImage( BRBMP, new Rectangle(BRpt, BRBMP.Size), 0, 0, BRBMP.Width, BRBMP.Height, GraphicsUnit.Pixel, Ia ); } private void Explode(object sender, System.EventArgs e) { if ( WholeBMP != null ) { cmdGo.Enabled = false; int L = 0; int T = 0; int Cx = (int)(WholeBMP.Width/2); int Cy = (int)(WholeBMP.Height/2); Rectangle R1 = new Rectangle( L, T, Cx, Cy ); Rectangle R2 = new Rectangle( Cx, T, Cx, Cy ); Rectangle R3 = new Rectangle( L, Cy, Cx, Cy ); Rectangle R4 = new Rectangle( Cx, Cy, Cx, Cy ); SaveBMP = WholeBMP; TLBMP = WholeBMP.Clone(new Rectangle( L, T, Cx, Cy ), WholeBMP.PixelFormat); TRBMP = WholeBMP.Clone(new Rectangle( Cx, T, Cx, Cy ), WholeBMP.PixelFormat); BLBMP = WholeBMP.Clone(new Rectangle( L, Cy, Cx, Cy ), WholeBMP.PixelFormat); BRBMP = WholeBMP.Clone(new Rectangle( Cx, Cy, Cx, Cy ), WholeBMP.PixelFormat); WholeBMP = null; int Gap = 10; TLpt = new Point( DrawRect.Left-Gap, DrawRect.Top-Gap ); TRpt = new Point( DrawRect.Left+Cx+Gap, DrawRect.Top-Gap ); BLpt = new Point( DrawRect.Left-Gap, DrawRect.Top+Cy+Gap ); BRpt = new Point( DrawRect.Left+Cx+Gap, DrawRect.Top+Cy+Gap ); T1.Enabled = true; Invalidate(); } } private void T1_Tick(object sender, System.EventArgs e) { Counter += 1; if ( Counter == 62 ) { Counter = 0; cmdGo.Enabled = true; T1.Enabled = false; WholeBMP = SaveBMP; } TLpt.X-=1; TLpt.Y-=1; TRpt.X+=1; TRpt.Y-=1; BLpt.X-=1; BLpt.Y+=1; BRpt.X+=1; BRpt.Y+=1; // Initialize a color matrix. //Set the alpha for the whole image float[][] m ={new float[] {1, 0, 0, 0, 0}, new float[] {0, 1, 0, 0, 0}, new float[] {0, 0, 1, 0, 0}, new float[] {0, 0, 0, (1-(float)Counter/62), 0}, new float[] {0, 0, 0, 0, 1}}; ColorMatrix cm = new ColorMatrix(m); // Create an ImageAttributes object and set its color matrix. Ia = new ImageAttributes(); Ia.SetColorMatrix( cm, ColorMatrixFlag.Default, ColorAdjustType.Bitmap); TLBMP.RotateFlip(RotateFlipType.Rotate90FlipNone); TRBMP.RotateFlip(RotateFlipType.Rotate90FlipNone); BLBMP.RotateFlip(RotateFlipType.Rotate90FlipNone); BRBMP.RotateFlip(RotateFlipType.Rotate90FlipNone); Invalidate(); } }
}
</source>
<A href="http://www.nfex.ru/Code/CSharpDownload/BitMapExt-c.zip">BitMapExt-c.zip( 8 k)</a>
Bitmap Other
<source lang="csharp"> /* GDI+ Programming in C# and VB .NET by Nick Symmonds Publisher: Apress ISBN: 159059035X
- /
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);
} } }
</source>
<A href="http://www.nfex.ru/Code/CSharpDownload/BitmapOther-c.zip">BitmapOther-c.zip( 5 k)</a>
Bitmap Viewer Host
<source lang="csharp"> /* User Interfaces in C#: Windows Forms and Custom Controls by Matthew MacDonald Publisher: Apress ISBN: 1590590457
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using System.Drawing; using System.Windows.Forms; using System.IO; using System; using System.Drawing; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; namespace BitmapViewerHost {
/// <summary> /// Summary description for BitmapViewerHost. /// </summary> public class BitmapViewerHost : System.Windows.Forms.Form { private BitmapViewer bitmapViewer1; /// <summary> /// Required designer variable. /// </summary> private System.ruponentModel.Container components = null; public BitmapViewerHost() { // // 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() { this.bitmapViewer1 = new BitmapViewer(); this.SuspendLayout(); // // bitmapViewer1 // this.bitmapViewer1.Anchor = (((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) | System.Windows.Forms.AnchorStyles.Left) | System.Windows.Forms.AnchorStyles.Right); this.bitmapViewer1.Dimension = 80; this.bitmapViewer1.Directory = null; this.bitmapViewer1.DockPadding.All = 1; this.bitmapViewer1.Location = new System.Drawing.Point(12, 12); this.bitmapViewer1.Name = "bitmapViewer1"; this.bitmapViewer1.Size = new System.Drawing.Size(300, 244); this.bitmapViewer1.Spacing = 10; this.bitmapViewer1.TabIndex = 0; this.bitmapViewer1.PictureSelected += new BitmapViewer.PictureSelectedDelegate(this.bitmapViewer1_PictureSelected); // // BitmapViewerHost // this.AutoScaleBaseSize = new System.Drawing.Size(5, 13); this.ClientSize = new System.Drawing.Size(320, 266); this.Controls.AddRange(new System.Windows.Forms.Control[] { this.bitmapViewer1}); this.Name = "BitmapViewerHost"; this.Text = "BitmapViewerHost"; this.Load += new System.EventHandler(this.BitmapViewerHost_Load); this.ResumeLayout(false); } #endregion /// <summary> /// The main entry point for the application. /// </summary> [STAThread] static void Main() { Application.Run(new BitmapViewerHost()); } private void BitmapViewerHost_Load(object sender, System.EventArgs e) { bitmapViewer1.Directory = Application.StartupPath; bitmapViewer1.Directory = "c:\\windows"; } private void bitmapViewer1_PictureSelected(object sender, PictureSelectedEventArgs e) { MessageBox.Show("You chose " + e.FileName); } } /// <summary> /// Summary description for BitmapViewer. /// </summary> public class BitmapViewer : System.Windows.Forms.UserControl { internal System.Windows.Forms.Panel pnlPictures; /// <summary> /// Required designer variable. /// </summary> private System.ruponentModel.Container components = null; public BitmapViewer() { // This call is required by the Windows.Forms Form Designer. InitializeComponent(); // TODO: Add any initialization after the InitForm 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 Component 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.pnlPictures = new System.Windows.Forms.Panel(); this.SuspendLayout(); // // pnlPictures // this.pnlPictures.AutoScroll = true; this.pnlPictures.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D; this.pnlPictures.Dock = System.Windows.Forms.DockStyle.Fill; this.pnlPictures.Location = new System.Drawing.Point(1, 1); this.pnlPictures.Name = "pnlPictures"; this.pnlPictures.Size = new System.Drawing.Size(530, 218); this.pnlPictures.TabIndex = 1; // // BitmapViewer // this.Controls.AddRange(new System.Windows.Forms.Control[] { this.pnlPictures}); this.DockPadding.All = 1; this.Name = "BitmapViewer"; this.Size = new System.Drawing.Size(532, 220); this.ResumeLayout(false); } #endregion public delegate void PictureSelectedDelegate(object sender, PictureSelectedEventArgs e); public event PictureSelectedDelegate PictureSelected; // The directory that will be scanned for image. private string directory=""; // Each picture box will be a square of dimension X dimension pixels. private int dimension; // The space between the images and the top, left, and right sides. private int border = 5; // The space between each image. private int spacing; // The images that were found in the selected directory. private ArrayList images = new ArrayList();
public string Directory { get { return directory; } set { directory = value; GetImages(); UpdateDisplay(); } } public int Dimension { get { return dimension; } set { dimension = value; UpdateDisplay(); } } public int Spacing { get { return spacing; } set { spacing = value; UpdateDisplay(); } }
private void GetImages() { images.Clear(); if (this.Directory != "" && this.directory != null) { DirectoryInfo dir = new DirectoryInfo(directory); foreach (FileInfo file in dir.GetFiles("*.bmp")) { images.Add(new NamedImage(Bitmap.FromFile(file.FullName), file.Name)); } } } private void UpdateDisplay() { // Clear the current display. pnlPictures.Controls.Clear(); // Row and Col will track the current position where pictures are // being inserted. They begin at the top-right corner. int row = border, col = border; // Iterate through the Images collection, and create PictureBox controls. foreach (NamedImage image in images) { PictureBox pic = new PictureBox(); pic.Image = image.Image; pic.Tag = image.FileName; pic.Size = new Size(dimension, dimension); pic.Location = new Point(col, row); pic.BorderStyle = BorderStyle.FixedSingle; // StrechImage mode gives us the "thumbnail" ability. pic.SizeMode = PictureBoxSizeMode.StretchImage; // Display the picture. pnlPictures.Controls.Add(pic); // Move to the next column. col += dimension + spacing; // Handle the event. pic.Click += new EventHandler(this.pic_Click); // Move to next line if no more pictures will fit. if ((col + dimension + spacing + border) > this.Width) { col = border; row += dimension + spacing; } } }
public void RefreshImages() { GetImages(); UpdateDisplay(); }
protected override void OnSizeChanged(System.EventArgs e) { UpdateDisplay(); base.OnSizeChanged(e); }
private PictureBox picSelected; private void pic_Click(object sender, System.EventArgs e) { // Clear the border style from the last selected picture box. if (picSelected != null) { picSelected.BorderStyle = BorderStyle.FixedSingle; } // Get the new selection. picSelected = (PictureBox)sender; picSelected.BorderStyle = BorderStyle.Fixed3D; // Fire the selection event. PictureSelectedEventArgs args = new PictureSelectedEventArgs((string)picSelected.Tag, picSelected.Image); if (PictureSelected != null) { PictureSelected(this, args); } }
private class NamedImage { public Image Image; public string FileName; public NamedImage(Image image, string fileName) { this.Image = image; this.FileName = fileName; } } } public class PictureSelectedEventArgs : EventArgs { public string FileName; public Image Image; public PictureSelectedEventArgs(String fileName, Image image) { this.FileName = fileName; this.Image = image; } }
}
</source>
Output color by R G B value for a Bitmap
<source lang="csharp"> using System; using System.IO; using System.Drawing; using System.Drawing.Imaging; public class Analyzer {
public static void Main() { Image sample = new Bitmap("a.jpg"); MemoryStream buf = new MemoryStream(); sample.Save(buf, ImageFormat.Bmp); byte[] currentImage = buf.GetBuffer(); int[] stats = new int[3]; for (int i = 0; i < currentImage.Length; ){ for (int j = 0; j < 3; j++) { stats[j] += currentImage[i]; ++i; } } Console.WriteLine("Blue: " + stats[0]); Console.WriteLine("Green: " + stats[1]); Console.WriteLine("Red: " + stats[2]); if ((stats[0] > stats[1]) && (stats[0] > stats[2])) Console.WriteLine("This is a cold picture."); if ((stats[1] > stats[0]) && (stats[1] > stats[2])) Console.WriteLine("This is a summer picture."); if ((stats[2] > stats[0]) && (stats[2] > stats[1])) Console.WriteLine("This is a fiery picture."); }
}
</source>