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.GroupBox groupBox1;
private System.Windows.Forms.CheckBox checkBox1;
private System.Windows.Forms.RadioButton radioButton1;
Image im = null;
Image im2 = null;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.RadioButton radioButton2;
private System.Windows.Forms.RadioButton radioButton3;
public Form1() {
this.groupBox1 = new System.Windows.Forms.GroupBox();
this.radioButton1 = new System.Windows.Forms.RadioButton();
this.checkBox1 = new System.Windows.Forms.CheckBox();
this.label1 = new System.Windows.Forms.Label();
this.radioButton2 = new System.Windows.Forms.RadioButton();
this.radioButton3 = new System.Windows.Forms.RadioButton();
this.groupBox1.SuspendLayout();
this.SuspendLayout();
this.groupBox1.Controls.AddRange(new System.Windows.Forms.Control[] {
this.radioButton3,
this.radioButton2,
this.radioButton1,
this.checkBox1});
this.groupBox1.Location = new System.Drawing.Point(312, 64);
this.groupBox1.Size = new System.Drawing.Size(248, 80);
this.radioButton1.Location = new System.Drawing.Point(120, 16);
this.radioButton1.Size = new System.Drawing.Size(112, 24);
this.checkBox1.Location = new System.Drawing.Point(16, 16);
this.checkBox1.CheckedChanged += new System.EventHandler(this.checkBox1_CheckedChanged);
this.label1.Location = new System.Drawing.Point(8, 8);
this.label1.Size = new System.Drawing.Size(304, 200);
this.radioButton2.Location = new System.Drawing.Point(16, 48);
this.radioButton3.Location = new System.Drawing.Point(120, 48);
this.radioButton3.Size = new System.Drawing.Size(120, 24);
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(560, 214);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.label1,
this.groupBox1});
this.groupBox1.ResumeLayout(false);
this.ResumeLayout(false);
this.radioButton1.Checked = false;
this.label1.Text = "";
this.groupBox1.Text = "RotateFlipType";
this.checkBox1.Text = "Paint";
this.radioButton1.Text = "Rotate180FlipY";
this.radioButton2.Text = "Rotate180FlipX";
this.radioButton3.Text = "Rotate180FlipNone";
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);
}
[STAThread]
static void Main() {
Application.Run(new Form1());
}
protected override void OnPaint(PaintEventArgs e) { RotateFlip(); }
private void label1_Paint(object sender, System.Windows.Forms.PaintEventArgs e) { RotateFlip(); }
private void checkBox1_CheckedChanged(object sender, System.EventArgs e) { RotateFlip(); }
private void radioButtons_CheckedChanged(object sender, System.EventArgs e) { RotateFlip(); }
protected void RotateFlip() {
Graphics g = Graphics.FromHwnd(this.label1.Handle);
Brush b = new SolidBrush(this.label1.BackColor);
if (this.checkBox1.Checked) {
if (im == null) ReadImage();
Graphics g2 = Graphics.FromImage(im);
FontFamily ff = new FontFamily("Times New Roman");
Font f = new Font(ff, 25, FontStyle.Bold);
g2.DrawString("HIMALAYA", f, new SolidBrush(Color.Yellow), 170, 210);
g2.Dispose();
im2 = (Image)im.Clone();
int w2 = label1.Width / 2, h2 = label1.Height / 2;
g.DrawImage(im, 0, 0, w2, h2);
if (this.radioButton1.Checked){
im2.RotateFlip(RotateFlipType.Rotate180FlipY);
g.DrawImage(im2, w2, 0, w2, h2);
} else
g.FillRectangle(b, w2, 0, w2, h2);
if (this.radioButton2.Checked) {
im2.RotateFlip(RotateFlipType.Rotate180FlipX);
g.DrawImage(im2, 0, h2, w2, h2);
} else
g.FillRectangle(b, 0, h2, w2, h2);
if (this.radioButton3.Checked) {
im2.RotateFlip(RotateFlipType.Rotate180FlipNone);
g.DrawImage(im2, w2, h2, w2, h2);
} else
g.FillRectangle(b, w2, h2, w2, h2);
im2.Dispose();
} else Clear(g);
b.Dispose(); g.Dispose();
}
protected void ReadImage() {
string path = "a.bmp";
im = Image.FromFile(path);
this.radioButton1.Enabled = true;
this.radioButton2.Enabled = true;
this.radioButton3.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.radioButton1.Enabled = false;
this.radioButton2.Enabled = false;
this.radioButton3.Enabled = false;
}
}
2D Graphics
Scribble with Bitmap
using System;
using System.Drawing;
using System.Windows.Forms;
class ScribbleWithBitmap: Form
{
bool bTracking;
Point ptLast;
Bitmap bitmap;
Graphics grfxBm;
public static void Main()
{
Application.Run(new ScribbleWithBitmap());
}
public ScribbleWithBitmap()
{
Size size = SystemInformation.PrimaryMonitorMaximizedWindowSize;
bitmap = new Bitmap(size.Width, size.Height);
grfxBm = Graphics.FromImage(bitmap);
grfxBm.Clear(BackColor);
}
protected override void OnMouseDown(MouseEventArgs mea)
{
if (mea.Button != MouseButtons.Left)
return;
ptLast = new Point(mea.X, mea.Y);
bTracking = true;
}
protected override void OnMouseMove(MouseEventArgs mea)
{
if (!bTracking)
return;
Point ptNew = new Point(mea.X, mea.Y);
Pen pen = new Pen(ForeColor);
Graphics grfx = CreateGraphics();
grfx.DrawLine(pen, ptLast, ptNew);
grfx.Dispose();
grfxBm.DrawLine(pen, ptLast, ptNew);
ptLast = ptNew;
}
protected override void OnMouseUp(MouseEventArgs mea)
{
bTracking = false;
}
protected override void OnPaint(PaintEventArgs pea)
{
Graphics grfx = pea.Graphics;
grfx.DrawImage(bitmap, 0, 0, bitmap.Width, bitmap.Height);
}
}
Load image from a URL(Web) and draw it
using System;
using System.Drawing;
using System.IO;
using System.Net;
using System.Windows.Forms;
class ImageFromWeb: Form
{
Image image;
public static void Main()
{
Application.Run(new ImageFromWeb());
}
public ImageFromWeb()
{
ResizeRedraw = true;
WebRequest webreq = WebRequest.Create("http://international.us.server12.fileserver.kutayzorlu.com/files/download/2017/01/1_uuid-04f7b0dd-dbeb-4b4c-b943-2f5f92486379_crc-2185242360.jpg");
WebResponse webres = webreq.GetResponse();
Stream stream = webres.GetResponseStream();
image = Image.FromStream(stream);
stream.Close();
}
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.DrawImage(image, 0, 0);
}
}
Center an Image (VerticalResolution, HorizontalResolution)
using System;
using System.Drawing;
using System.Windows.Forms;
class CenterImage: Form
{
Image image = Image.FromFile("Color.jpg");
public static void Main()
{
Application.Run(new CenterImage());
}
public CenterImage()
{
ResizeRedraw = true;
}
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.PageUnit = GraphicsUnit.Pixel;
grfx.PageScale = 1;
RectangleF rectf = grfx.VisibleClipBounds;
float cxImage = grfx.DpiX * image.Width /
image.HorizontalResolution;
float cyImage = grfx.DpiY * image.Height /
image.VerticalResolution;
grfx.DrawImage(image, (rectf.Width - cxImage) / 2,
(rectf.Height - cyImage) / 2);
}
}
Center Pixel-Size Image by using Image.Width and Image.Height
using System;
using System.Drawing;
using System.Windows.Forms;
class CenterPixelSizeImage: Form
{
Image image = Image.FromFile("Color.jpg");
public static void Main()
{
Application.Run(new CenterPixelSizeImage());
}
public CenterPixelSizeImage()
{
ResizeRedraw = true;
}
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.DrawImage(image, (cx - image.Width) / 2,
(cy - image.Height) / 2,
image.Width, image.Height);
}
}
Image Scale To Rectangle
using System;
using System.Drawing;
using System.Windows.Forms;
class ImageScaleToRectangle: Form
{
Image image = Image.FromFile("Color.jpg");
public static void Main()
{
Application.Run(new ImageScaleToRectangle());
}
public ImageScaleToRectangle()
{
ResizeRedraw = true;
}
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.DrawImage(image, 0, 0, cx, cy);
}
}
Image Scale Isotropic
using System;
using System.Drawing;
using System.Windows.Forms;
class ImageScaleIsotropic: Form
{
Image image = Image.FromFile("Color.jpg");
public static void Main()
{
Application.Run(new ImageScaleIsotropic());
}
public ImageScaleIsotropic()
{
ResizeRedraw = true;
}
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)
{
Rectangle rect = new Rectangle(0, 0, cx, cy);
SizeF sizef = new SizeF(image.Width / image.HorizontalResolution,
image.Height / image.VerticalResolution);
float fScale = Math.Min(rect.Width / sizef.Width,
rect.Height / sizef.Height);
sizef.Width *= fScale;
sizef.Height *= fScale;
grfx.DrawImage(image, rect.X + (rect.Width - sizef.Width ) / 2,
rect.Y + (rect.Height - sizef.Height) / 2,
sizef.Width, sizef.Height);
}
}