Csharp/C Sharp/2D Graphics/Graphics
Содержание
- 1 Apply the scaling transformation(scale subsequent operations by 2x horizontally and 3x vertically)
- 2 Bezier Art: DrawBeziers
- 3 Clear a Graphics
- 4 Clipping: ResetClip
- 5 DpiY and DpiX
- 6 Draw an Image
- 7 Draw a Rectangle
- 8 Draw Ellipse
- 9 DrawImage with destination points
- 10 DrawImage with size
- 11 DrawPie with offset
- 12 Fill a Rectangle with LinearGradientBrush
- 13 Fill a Rectangle with TextureBrush
- 14 FillEllipse: Red Traffic Light
- 15 FillPolygon: Alternate and Winding Fill Modes
- 16 Fill the area "bounded" by the path
- 17 Graphics: Draw an Icon
- 18 Graphics: DrawArc
- 19 Graphics: DrawPie
- 20 Graphics: DrawRectangle
- 21 Graphics: DrawRectangles
- 22 Graphics: DrawString
- 23 Graphics: FillClosedCurve
- 24 Graphics: FillEllipse
- 25 Graphics: FillRectangle
- 26 Graphics: FillRectangles
- 27 Graphics: MeasureString
- 28 Graphics: PageScale
- 29 Graphics: PageUnit
- 30 Graphics: Pen Alignment
- 31 Graphics: ScaleTransform
- 32 Graphics: SetClip
- 33 Graphics.SmoothingMode
- 34 Graphics: Transform
- 35 Graphics: TranslateClip
- 36 Graphics: TranslateTransform
- 37 Line and Arc Combo
- 38 One-Inch Ellipse
- 39 Paint along points in a list points
- 40 Picture Cube: DrawImage
- 41 PixelOffsetMode
- 42 Reset the transformation Translate by 30 pixels in vertical direction
- 43 Rotate the text 45 degrees clockwise then Translate the text 150 pixels horizontally
- 44 Rotate the text through 45 degrees
- 45 Scribble with Mouse
- 46 Transform and RotateTransform in a loop
- 47 TransformPoints
- 48 Use different Font object to draw a line of text
- 49 Wide Polyline: DrawLines
Apply the scaling transformation(scale subsequent operations by 2x horizontally and 3x vertically)
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;
g.FillRectangle(Brushes.White, this.ClientRectangle);
g.DrawRectangle(Pens.Black, 10, 10, 50, 50);
g.DrawEllipse(Pens.Black, 10, 10, 10, 10);
g.ScaleTransform(2.0f, 3.0f);
g.DrawRectangle(Pens.Black, 10, 10, 50, 50);
g.DrawEllipse(Pens.Black, 10, 10, 10, 10);
}
public static void Main() {
Application.Run(new Form1());
}
}
Bezier Art: DrawBeziers
using System;
using System.Drawing;
using System.Windows.Forms;
class BezierArt: Form
{
public static void Main()
{
Application.Run(new BezierArt());
}
public BezierArt()
{
ResizeRedraw = true;
}
protected override void OnPaint(PaintEventArgs pea)
{
DoPage(pea.Graphics, ForeColor,200, 200);
}
protected void DoPage(Graphics grfx, Color clr, int cx, int cy)
{
Pen pen = new Pen(clr);
PointF[] aptf = new PointF[4];
int iNum = 100;
for (int i = 0; i < iNum; i++)
{
double dAngle = 2 * i * Math.PI / iNum;
aptf[0].X = cx / 2 + cx / 2 * (float) Math.Cos(dAngle);
aptf[0].Y = 5 * cy / 8 + cy / 16 * (float) Math.Sin(dAngle);
aptf[1] = new PointF(cx / 2, -cy);
aptf[2] = new PointF(cx / 2, 2 * cy);
dAngle += Math.PI;
aptf[3].X = cx / 2 + cx / 4 * (float) Math.Cos(dAngle);
aptf[3].Y = cy / 2 + cy / 16 * (float) Math.Sin(dAngle);
grfx.DrawBeziers(pen, aptf);
}
}
}
Clear a Graphics
using System;
using System.Drawing;
using System.Windows.Forms;
class RandomClear: Form
{
public static void Main()
{
Application.Run(new RandomClear());
}
public RandomClear()
{
Text = "Random Clear";
}
protected override void OnPaint(PaintEventArgs pea)
{
Graphics graphics = pea.Graphics;
Random rand = new Random();
graphics.Clear(Color.FromArgb(rand.Next(256),
rand.Next(256),
rand.Next(256)));
}
}
Clipping: ResetClip
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
using System.Drawing.Drawing2D;
public class Form1 : System.Windows.Forms.Form {
GraphicsPath gP;
[STAThread]
static void Main() {
Application.Run(new Form1());
}
protected override void OnPaint(System.Windows.Forms.PaintEventArgs e) {
Graphics g = e.Graphics;
DrawPathTransform(g);
g.Dispose();
}
void AddStringToPath(string s) {
int fSt = (int)FontStyle.Regular;
Point xy = new Point(50, 10);
FontFamily fF = new FontFamily("Times new roman");
StringFormat sFr = StringFormat.GenericDefault;
gP.AddString(s, fF, fSt, 100, xy, sFr);
}
void DrawPathTransform(Graphics g) {
gP = new GraphicsPath();
AddStringToPath("C#");
g.FillPath(Brushes.Gray, gP);
Matrix m = new Matrix();
m.Translate(5, 5);
gP.Transform(m);
g.FillPath(Brushes.Yellow, gP);
g.DrawPath(Pens.Red, gP);
}
void DrawClip(Graphics g) {
gP = new GraphicsPath();
AddStringToPath("C#");
g.SetClip(gP);
g.TranslateClip(-5, -5);
RectangleF rc = gP.GetBounds();
rc.Offset(-5, -5);
g.FillRectangle(Brushes.Gray, rc);
g.ResetClip();
g.FillPath(Brushes.Yellow, gP);
g.DrawPath(Pens.Red, gP);
}
}
DpiY and DpiX
using System;
using System.Drawing;
using System.Windows.Forms;
class DotsPerInch: Form
{
public static void Main()
{
Application.Run(new DotsPerInch());
}
public DotsPerInch()
{
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.DrawString(String.Format("DpiX = {0}\nDpiY = {1}",
grfx.DpiX, grfx.DpiY),
Font, new SolidBrush(clr), 0, 0);
}
}
Draw an Image
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");
g.DrawImage(bmp, 0, 0);
}
public static void Main() {
Application.Run(new Form1());
}
}
Draw a Rectangle
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;
g.FillRectangle(Brushes.White, this.ClientRectangle);
Pen p = new Pen(Color.Black);
g.DrawRectangle(p, 3, 3, 8, 7);
p.Dispose();
}
public static void Main() {
Application.Run(new Form1());
}
}
Draw Ellipse
using System;
using System.Drawing;
using System.Windows.Forms;
class ClientEllipse: Form
{
public static void Main()
{
Application.Run(new ClientEllipse());
}
public ClientEllipse()
{
Text = "Client Ellipse";
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.DrawEllipse(new Pen(clr), 0, 0, cx - 1, cy - 1);
}
}
DrawImage with destination points
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");
g.FillRectangle(Brushes.White, this.ClientRectangle);
Point[] destinationPoints = {
new Point(0, 0), // destination for upper-left point of original
new Point(100, 0), // destination for upper-right point of original
new Point(50, 100)};// destination for lower-left point of original
g.DrawImage(bmp, destinationPoints);
}
public static void Main() {
Application.Run(new Form1());
}
}
DrawImage with size
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, this.ClientRectangle);
}
public static void Main() {
Application.Run(new Form1());
}
}
DrawPie with offset
using System;
using System.Drawing;
using System.Windows.Forms;
class PieChart: Form
{
int[] aiValues = { 50, 100, 25, 150, 100, 75 };
public static void Main()
{
Application.Run(new PieChart());
}
public PieChart()
{
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(50, 50, 200, 200);
Pen pen = new Pen(clr);
int iTotal = 0;
float fAngle = 0, fSweep;
foreach(int iValue in aiValues)
iTotal += iValue;
foreach(int iValue in aiValues)
{
fSweep = 360f * iValue / iTotal;
DrawPieSlice(grfx, pen, rect, fAngle, fSweep);
fAngle += fSweep;
}
}
protected virtual void DrawPieSlice(Graphics grfx, Pen pen,
Rectangle rect,
float fAngle, float fSweep)
{
float fSlice = (float)(2 * Math.PI * (fAngle + fSweep / 2) / 360);
rect.Offset((int)(rect.Width / 10 * Math.Cos(fSlice)),
(int)(rect.Height / 10 * Math.Sin(fSlice)));
grfx.DrawPie(pen, rect, fAngle, fSweep);
}
}
Fill a Rectangle with LinearGradientBrush
using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Text;
using System.Windows.Forms;
public class Form1 : Form {
protected override void OnPaint(PaintEventArgs e) {
Graphics g = e.Graphics;
LinearGradientBrush lgb = new LinearGradientBrush(
new Point(0, 0),
new Point(50, 10),
Color.White,
Color.Black);
g.FillRectangle(lgb, this.ClientRectangle);
lgb.Dispose();
}
public static void Main() {
Application.Run(new Form1());
}
}
Fill a Rectangle with TextureBrush
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("alphabet.gif");
TextureBrush tb = new TextureBrush(bmp);
g.FillRectangle(tb, 45, 45, 70, 150);
bmp.Dispose();
tb.Dispose();
}
public static void Main() {
Application.Run(new Form1());
}
}
FillEllipse: Red Traffic Light
using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Windows.Forms;
class Form1 : Form {
private int lightColor = 1;
public Form1() {
InitializeComponent();
}
private void Form1_Paint(object sender, PaintEventArgs e) {
Graphics g = e.Graphics;
g.FillRectangle(Brushes.White, this.ClientRectangle);
Rectangle r = new Rectangle(10, 10, 60, 180);
g.FillRectangle(Brushes.LightGray, r);
Rectangle r1 = new Rectangle(10, 10, 60, 60);
Rectangle r2 = new Rectangle(10, 70, 60, 60);
Rectangle r3 = new Rectangle(10, 130, 60, 60);
switch (lightColor) {
case 1:
g.FillEllipse(Brushes.Red, r1);
g.FillEllipse(Brushes.Black, r2);
g.FillEllipse(Brushes.Black, r3);
break;
case 2:
g.FillEllipse(Brushes.Black, r1);
g.FillEllipse(Brushes.Yellow, r2);
g.FillEllipse(Brushes.Black, r3);
break;
case 3:
g.FillEllipse(Brushes.Black, r1);
g.FillEllipse(Brushes.Black, r2);
g.FillEllipse(Brushes.Green, r3);
break;
}
}
private void Form1_Click(object sender, EventArgs e) {
lightColor++;
if (lightColor == 4)
lightColor = 1;
this.Invalidate();
}
private void InitializeComponent() {
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(292, 271);
this.Paint += new System.Windows.Forms.PaintEventHandler(this.Form1_Paint);
this.Click += new System.EventHandler(this.Form1_Click);
}
[STAThread]
static void Main() {
Application.EnableVisualStyles();
Application.Run(new Form1());
}
}
FillPolygon: Alternate and Winding Fill Modes
using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;
class FillModesClassical : Form {
public static void Main() {
Application.Run(new FillModesClassical());
}
public FillModesClassical() {
ResizeRedraw = true;
ClientSize = new Size(2 * ClientSize.Height, ClientSize.Height);
}
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) {
Brush brush = new SolidBrush(clr);
Point[] apt = new Point[5];
for (int i = 0; i < apt.Length; i++) {
double dAngle = (i * 0.8 - 0.5) * Math.PI;
apt[i] = new Point(
(int)(cx * (0.25 + 0.24 * Math.Cos(dAngle))),
(int)(cy * (0.50 + 0.48 * Math.Sin(dAngle))));
}
grfx.FillPolygon(brush, apt, FillMode.Alternate);
}
}
Fill the area "bounded" by the path
using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Text;
using System.Windows.Forms;
public class Form1 : Form {
protected override void OnPaint(PaintEventArgs e) {
Graphics g = e.Graphics;
g.FillRectangle(Brushes.White, this.ClientRectangle);
GraphicsPath gp = new GraphicsPath();
gp.AddLine(10, 10, 10, 50);
gp.AddLine(10, 50, 50, 50);
gp.AddLine(50, 50, 50, 10);
gp.StartFigure();
gp.AddLine(60, 10, 60, 50);
gp.AddLine(60, 50, 100, 50);
gp.AddLine(100, 50, 100, 10);
gp.CloseFigure();
Rectangle r = new Rectangle(110, 10, 40, 40);
gp.AddEllipse(r);
g.FillPath(Brushes.Orange, gp);
g.DrawPath(Pens.Black, gp);
gp.Dispose();
}
public static void Main() {
Application.Run(new Form1());
}
}
Graphics: Draw an Icon
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
using System.Net;
using System.IO;
public class Form1 : System.Windows.Forms.Form {
[STAThread]
static void Main() {
Application.Run(new Form1());
}
protected override void OnPaint(System.Windows.Forms.PaintEventArgs e) {
string p = "icon.ico";
Icon ic = new Icon(p);
this.Icon = ic; // Icon 1)
Graphics g = e.Graphics;
g.DrawIcon(ic, 0, 0); // Icon 2)
Image i = ic.ToBitmap();
g.DrawImage(i, 50, 0); // Icon 3)
g.Dispose();
}
}
Graphics: DrawArc
using System;
using System.Drawing;
using System.Windows.Forms;
class DashedEllipse: Form
{
public static void Main()
{
Application.Run(new DashedEllipse());
}
public DashedEllipse()
{
Text = "Dashed Ellipse Using DrawArc";
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)
{
Pen pen = new Pen(clr);
Rectangle rect = new Rectangle(0, 0, cx - 1, cy - 1);
for (int iAngle = 0; iAngle < 360; iAngle += 15)
grfx.DrawArc(pen, rect, iAngle, 10);
}
}
Graphics: DrawPie
using System;
using System.Drawing;
using System.Windows.Forms;
class PieChart: Form
{
int[] aiValues = { 50, 100, 25, 150, 100, 75 };
public static void Main()
{
Application.Run(new PieChart());
}
public PieChart()
{
Text = "Pie Chart";
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(50, 50, 200, 200);
Pen pen = new Pen(clr);
int iTotal = 0;
float fAngle = 0, fSweep;
foreach(int iValue in aiValues)
iTotal += iValue;
foreach(int iValue in aiValues)
{
fSweep = 360f * iValue / iTotal;
DrawPieSlice(grfx, pen, rect, fAngle, fSweep);
fAngle += fSweep;
}
}
protected virtual void DrawPieSlice(Graphics grfx, Pen pen,
Rectangle rect,
float fAngle, float fSweep)
{
grfx.DrawPie(pen, rect, fAngle, fSweep);
}
}
Graphics: DrawRectangle
using System;
using System.Drawing;
using System.Windows.Forms;
class OutlineClientRectangle: Form
{
public static void Main()
{
Application.Run(new OutlineClientRectangle());
}
public OutlineClientRectangle()
{
Text = "Client Rectangle";
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.DrawRectangle(Pens.Red, 0, 0, cx - 1, cy - 1);
}
}
Graphics: DrawRectangles
using System;
using System.Drawing;
using System.Windows.Forms;
class FourByFours: Form
{
public static void Main()
{
Application.Run(new FourByFours());
}
public FourByFours()
{
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)
{
Pen pen = new Pen(clr);
Brush brush = new SolidBrush(clr);
grfx.DrawRectangles(pen, new Rectangle[] {new Rectangle(8, 2, 4, 4)});
}
}
Graphics: DrawString
using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;
class MobyDick: Form
{
public static void Main()
{
Application.Run(new MobyDick());
}
public MobyDick()
{
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.DrawString("abc", Font, new SolidBrush(clr),
new Rectangle(0, 0, cx, cy));
}
}
Graphics: FillClosedCurve
using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;
class ClosedCurveFillModes: Form
{
public static void Main()
{
Application.Run(new ClosedCurveFillModes());
}
ClosedCurveFillModes()
{
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)
{
Brush brush = new SolidBrush(clr);
Point[] apt = new Point[5];
for (int i = 0; i < apt.Length; i++)
{
double dAngle = (i * 0.8 - 0.5) * Math.PI;
apt[i] = new Point(
(int)(cx *(0.25 + 0.24 * Math.Cos(dAngle))),
(int)(cy *(0.50 + 0.48 * Math.Sin(dAngle))));
}
grfx.FillClosedCurve(brush, apt, FillMode.Alternate);
for (int i = 0; i < apt.Length; i++)
apt[i].X += cx / 2;
grfx.FillClosedCurve(brush, apt, FillMode.Winding);
}
}
Graphics: FillEllipse
using System;
using System.Drawing;
using System.Windows.Forms;
class FourByFours: Form
{
public static void Main()
{
Application.Run(new FourByFours());
}
public FourByFours()
{
Text = "Four by Fours";
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)
{
Pen pen = new Pen(clr);
Brush brush = new SolidBrush(clr);
grfx.FillEllipse(brush, new Rectangle(14, 8, 4, 4));
}
}
Graphics: FillRectangle
using System;
using System.Drawing;
using System.Windows.Forms;
class FourByFours: Form
{
public static void Main()
{
Application.Run(new FourByFours());
}
public FourByFours()
{
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)
{
Pen pen = new Pen(clr);
Brush brush = new SolidBrush(clr);
grfx.FillRectangle(brush, new Rectangle(2, 8, 4, 4));
}
}
Graphics: FillRectangles
using System;
using System.Drawing;
using System.Windows.Forms;
class FourByFours: Form
{
public static void Main()
{
Application.Run(new FourByFours());
}
public FourByFours()
{
Text = "Four by Fours";
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)
{
Pen pen = new Pen(clr);
Brush brush = new SolidBrush(clr);
grfx.FillRectangles(brush, new Rectangle[]
{new Rectangle(8, 8, 4, 4)});
}
}
Graphics: MeasureString
using System;
using System.Drawing;
using System.Windows.Forms;
class SysInfoColumns: Form
{
public static void Main()
{
Application.Run(new SysInfoColumns());
}
public SysInfoColumns()
{
}
protected override void OnPaint(PaintEventArgs pea)
{
Graphics grfx = pea.Graphics;
Brush brush = new SolidBrush(ForeColor);
SizeF sizef;
float cxCol, y = 0;
int cySpace;
sizef = grfx.MeasureString("ArrangeStartingPosition ", Font);
cxCol = sizef.Width;
cySpace = Font.Height;
grfx.DrawString("ArrangeDirection", Font, brush, 0, y);
grfx.DrawString(SystemInformation.ArrangeDirection.ToString(),
Font, brush, cxCol, y);
y += cySpace;
grfx.DrawString("ArrangeStartingPosition", Font, brush, 0, y);
grfx.DrawString(
SystemInformation.ArrangeStartingPosition.ToString(),
Font, brush, cxCol, y);
y += cySpace;
grfx.DrawString("BootMode", Font, brush, 0, y);
grfx.DrawString(SystemInformation.BootMode.ToString(),
Font, brush, cxCol, y);
y += cySpace;
grfx.DrawString("Border3DSize", Font, brush, 0, y);
grfx.DrawString(SystemInformation.Border3DSize.ToString(),
Font, brush, cxCol, y);
y += cySpace;
grfx.DrawString("BorderSize", Font, brush, 0, y);
grfx.DrawString(SystemInformation.BorderSize.ToString(),
Font, brush, cxCol, y);
y += cySpace;
grfx.DrawString("CaptionButtonSize", Font, brush, 0, y);
grfx.DrawString(SystemInformation.CaptionButtonSize.ToString(),
Font, brush, cxCol, y);
}
}
Graphics: PageScale
using System;
using System.Drawing;
using System.Windows.Forms;
class ArbitraryCoordinates: Form
{
public static void Main()
{
Application.Run(new ArbitraryCoordinates());
}
public ArbitraryCoordinates()
{
Text = "Arbitrary Coordinates";
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;
SizeF sizef = grfx.VisibleClipBounds.Size;
grfx.PageScale = Math.Min(sizef.Width / grfx.DpiX / 1000,
sizef.Height / grfx.DpiY / 1000);
grfx.DrawEllipse(new Pen(clr), 0, 0, 990, 990);
}
}
Graphics: PageUnit
using System;
using System.Drawing;
using System.Windows.Forms;
class ArbitraryCoordinates: Form
{
public static void Main()
{
Application.Run(new ArbitraryCoordinates());
}
public ArbitraryCoordinates()
{
Text = "Arbitrary Coordinates";
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;
SizeF sizef = grfx.VisibleClipBounds.Size;
grfx.DrawEllipse(new Pen(clr), 0, 0, 990, 990);
}
}
Graphics: Pen Alignment
using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Text;
using System.Windows.Forms;
public class Form1 : Form {
protected override void OnPaint(PaintEventArgs e) {
Graphics g = e.Graphics;
Pen p = new Pen(Color.Black, 3);
p.Alignment = PenAlignment.Center;
g.DrawRectangle(p, 3, 3, 8, 7);
p.Dispose();
}
public static void Main() {
Application.Run(new Form1());
}
}
Graphics: ScaleTransform
using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;
class MobyDick: Form
{
public static void Main()
{
Application.Run(new MobyDick());
}
public MobyDick()
{
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.ScaleTransform(1, 3);
grfx.DrawString("abc", Font, new SolidBrush(clr),
new Rectangle(0, 0, cx, cy));
}
}
Graphics: SetClip
using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;
class KeyholeClip: Form
{
protected Image image;
protected GraphicsPath path;
public static void Main()
{
Application.Run(new KeyholeClip());
}
public KeyholeClip()
{
ResizeRedraw = true;
image = Image.FromFile("Color.jpg");
path = new GraphicsPath();
path.AddArc(80, 0, 80, 80, 45, -270);
path.AddLine(70, 180, 170, 180);
}
protected override void OnPaint(PaintEventArgs pea)
{
pea.Graphics.SetClip(path);
pea.Graphics.DrawImage(image, 0, 0, image.Width, image.Height);
}
}
Graphics.SmoothingMode
using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;
class AntiAlias: Form
{
public static void Main()
{
Application.Run(new AntiAlias());
}
public AntiAlias()
{
Text = "Anti-Alias Demo";
BackColor = SystemColors.Window;
ForeColor = SystemColors.WindowText;
}
protected override void OnPaint(PaintEventArgs pea)
{
Graphics grfx = pea.Graphics;
Pen pen = new Pen(ForeColor);
grfx.SmoothingMode = SmoothingMode.None;
grfx.DrawLine(pen, 2, 2, 18, 10);
}
}
Graphics: Transform
using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;
class MobyDick: Form
{
public static void Main()
{
Application.Run(new MobyDick());
}
public MobyDick()
{
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.Transform = new Matrix(1, 1, -1, 1, 0, 0);
grfx.DrawString("abc", Font, new SolidBrush(clr),
new Rectangle(0, 0, cx, cy));
}
}
Graphics: TranslateClip
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: TranslateTransform
using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;
class RotatedRectangles: Form
{
public static void Main()
{
Application.Run(new RotatedRectangles());
}
public RotatedRectangles()
{
Text = "Rotated Rectangles";
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)
{
Pen pen = new Pen(clr);
grfx.PageUnit = GraphicsUnit.Pixel;
PointF[] aptf = { (PointF) grfx.VisibleClipBounds.Size };
grfx.PageUnit = GraphicsUnit.Inch;
grfx.PageScale = 0.01f;
grfx.TransformPoints(CoordinateSpace.Page,
CoordinateSpace.Device, aptf);
grfx.TranslateTransform(aptf[0].X / 2, aptf[0].Y / 2);
for (int i = 0; i < 6; i++)
{
grfx.DrawRectangle(pen, 0, 0, 200, 200);
grfx.RotateTransform(10);
}
}
}
Line and Arc Combo
using System;
using System.Drawing;
using System.Windows.Forms;
class LineArcCombo: Form
{
public static void Main()
{
Application.Run(new LineArcCombo());
}
public LineArcCombo()
{
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)
{
Pen pen = new Pen(clr, 25);
grfx.DrawLine(pen, 25, 100, 125, 100);
grfx.DrawArc (pen, 125, 50, 100, 100, -180, 180);
grfx.DrawLine(pen, 225, 100, 325, 100);
}
}
One-Inch Ellipse
using System;
using System.Drawing;
using System.Windows.Forms;
class TryOneInchEllipse: Form
{
public static void Main()
{
Application.Run(new TryOneInchEllipse());
}
public TryOneInchEllipse()
{
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.DrawEllipse(new Pen(clr), 0, 0, grfx.DpiX, grfx.DpiY);
}
}
Paint along points in a list points
using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
public class MainForm : Form {
private List<Point> myPts = new List<Point>();
public MainForm() {
this.Text = "Basic Paint Form";
this.Paint += new PaintEventHandler(MainForm_Paint);
this.MouseDown += new MouseEventHandler(MainForm_MouseDown);
}
void MainForm_MouseDown(object sender, MouseEventArgs e) {
myPts.Add(new Point(e.X, e.Y));
Invalidate();
}
public void OnPaint(PaintEventArgs e) {
Graphics g = e.Graphics;
g.DrawString("Hello GDI+", new Font("Times New Roman", 20),Brushes.Green, 0, 0);
foreach (Point p in myPts)
g.FillEllipse(Brushes.Firebrick, p.X, p.Y, 10, 10);
}
}
Picture Cube: DrawImage
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class Form1 : System.Windows.Forms.Form {
[STAThread]
static void Main() {
Application.Run(new Form1());
}
protected override void OnPaint(PaintEventArgs pea) {
CubeDBuf();
}
private void CubeDBuf() {
Graphics g;
string path;
int x = 100, y = 40;
Point A = new Point(10, 50);
Point B = new Point(180, 50);
Point C = new Point(10, 170);
Point a = new Point(A.X + x, A.Y - y);
Point b = new Point(B.X + x, B.Y - y);
Point Z = new Point(B.X, C.Y);
Point[] p3Fro = { A, B, C };
Point[] p3Top = { a, b, A };
Point[] p3Rig = { B, b, Z };
Bitmap bm = new Bitmap(B.X + x, C.Y + y);
g = Graphics.FromImage(bm);
path = "A.bmp";
Image im1 = Image.FromFile(path);
g.DrawImage(im1, p3Fro);
path = "B.BMP";
Image im3 = Image.FromFile(path);
g.DrawImage(im3, p3Top);
path = "C.bmp";
Image im2 = Image.FromFile(path);
g.DrawImage(im2, p3Rig);
g = Graphics.FromHwnd(this.Handle);
g.DrawImage(bm, 1, 1);
g.Dispose();
}
}
PixelOffsetMode
using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;
class AntiAlias: Form
{
public static void Main()
{
Application.Run(new AntiAlias());
}
public AntiAlias()
{
Text = "Anti-Alias Demo";
BackColor = SystemColors.Window;
ForeColor = SystemColors.WindowText;
}
protected override void OnPaint(PaintEventArgs pea)
{
Graphics grfx = pea.Graphics;
Pen pen = new Pen(ForeColor);
grfx.PixelOffsetMode = PixelOffsetMode.Default;
grfx.DrawLine(pen, 2, 2, 18, 10);
}
}
Reset the transformation Translate by 30 pixels in vertical direction
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;
g.FillRectangle(Brushes.White, ClientRectangle);
g.DrawEllipse(Pens.Black, 20, 20, 30, 50);
g.TranslateTransform(-15, 0);
g.DrawEllipse(Pens.Black, 20, 20, 30, 50);
g.ResetTransform();
g.TranslateTransform(0, 30);
g.DrawEllipse(Pens.Black, 20, 20, 30, 50);
}
public static void Main() {
Application.Run(new Form1());
}
}
Rotate the text 45 degrees clockwise then Translate the text 150 pixels horizontally
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;
g.FillRectangle(Brushes.White, this.ClientRectangle);
Font f = new Font("Times New Roman", 24);
g.DrawString("Rotate then Translate", f, Brushes.Black, 0, 0);
g.RotateTransform(45);
g.TranslateTransform(150, 0);
g.DrawString("Rotate then Translate ", f, Brushes.Black, 0, 0);
}
public static void Main() {
Application.Run(new Form1());
}
}
Rotate the text through 45 degrees
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;
g.FillRectangle(Brushes.White, this.ClientRectangle);
Font f = new Font("Times New Roman", 24);
g.DrawString("Rotation", f, Brushes.Black, 0, 0);
g.RotateTransform(45);
g.DrawString("Rotation", f, Brushes.Black, 0, 0);
}
public static void Main() {
Application.Run(new Form1());
}
}
Scribble with Mouse
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class frmScribble : System.Windows.Forms.Form {
private System.ruponentModel.Container components = null;
private bool mouseDown = false;
private Point lastPoint = Point.Empty;
private string color = "black";
private Graphics g;
private Pen p;
public frmScribble() {
g = CreateGraphics();
p = new Pen(Color.FromName(color));
}
protected override void OnMouseDown(MouseEventArgs e) {
mouseDown = true;
if (e.Button == MouseButtons.Right) {
ContextMenu m = new ContextMenu();
m.MenuItems.Add(0, new MenuItem("black", new EventHandler(RightMouseButton_Click)));
m.MenuItems.Add(1, new MenuItem("white", new EventHandler(RightMouseButton_Click)));
m.MenuItems.Add(2, new MenuItem("red", new EventHandler(RightMouseButton_Click)));
m.MenuItems.Add(3, new MenuItem("green", new EventHandler(RightMouseButton_Click)));
m.MenuItems.Add(4, new MenuItem("blue", new EventHandler(RightMouseButton_Click)));
m.Show(this, new Point(e.X, e.Y));
}
}
protected void RightMouseButton_Click(object sender, EventArgs e) {
color = ((MenuItem)sender).Text;
p = new Pen(Color.FromName(color));
}
protected override void OnMouseUp(MouseEventArgs e) {
mouseDown = false;
}
protected override void OnMouseMove(MouseEventArgs e) {
if (lastPoint.Equals(Point.Empty)) lastPoint = new Point(e.X, e.Y);
if (mouseDown) {
Point pMousePos = new Point(e.X, e.Y);
g.DrawLine(p, pMousePos, lastPoint);
}
lastPoint = new Point(e.X, e.Y);
}
[STAThread]
static void Main() {
Application.Run(new frmScribble());
}
}
Transform and RotateTransform in a loop
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;
g.FillRectangle(Brushes.White, this.ClientRectangle);
Font f = new Font("Times New Roman", 16);
for (float angle = 0; angle < 360; angle += 45)
{
g.ResetTransform();
g.TranslateTransform(ClientRectangle.Width / 2,
ClientRectangle.Height / 2);
g.RotateTransform(angle);
g.DrawString("Hello, World", f, Brushes.Black, 50, 0);
}
}
public static void Main() {
Application.Run(new Form1());
}
}
TransformPoints
using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;
class WhatSizeTransform : Form {
public static void Main() {
Application.Run(new WhatSizeTransform());
}
public WhatSizeTransform() {
Text = "With TransformPoints";
ResizeRedraw = true;
}
protected void DoPage(Graphics grfx, Color clr, int cx, int cy) {
Brush brush = new SolidBrush(clr);
int y = 0;
Point[] apt = { new Point(cx, cy) };
grfx.TransformPoints(CoordinateSpace.Device, CoordinateSpace.Page, apt);
DoIt(grfx, brush, ref y, apt[0], GraphicsUnit.Pixel);
DoIt(grfx, brush, ref y, apt[0], GraphicsUnit.Display);
DoIt(grfx, brush, ref y, apt[0], GraphicsUnit.Document);
DoIt(grfx, brush, ref y, apt[0], GraphicsUnit.Inch);
DoIt(grfx, brush, ref y, apt[0], GraphicsUnit.Millimeter);
DoIt(grfx, brush, ref y, apt[0], GraphicsUnit.Point);
}
void DoIt(Graphics grfx, Brush brush, ref int y,Point pt, GraphicsUnit gu) {
GraphicsState gs = grfx.Save();
grfx.PageUnit = gu;
grfx.PageScale = 1;
PointF[] aptf = { pt };
grfx.TransformPoints(CoordinateSpace.Page, CoordinateSpace.Device, aptf);
SizeF sizef = new SizeF(aptf[0]);
grfx.Restore(gs);
grfx.DrawString(gu + ": " + sizef, Font, brush, 0, y);
y += (int)Math.Ceiling(Font.GetHeight(grfx));
}
}
Use different Font object to draw a line of text
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;
g.FillRectangle(Brushes.White, this.ClientRectangle);
Font font = new Font("Times New Roman", 12, FontStyle.Regular);
Font bfont = new Font("Times New Roman", 12, FontStyle.Bold);
Font ifont = new Font("Times New Roman", 12, FontStyle.Italic);
Font bifont = new Font("Times New Roman", 12,FontStyle.Bold | FontStyle.Italic);
Font sfont = new Font("Times New Roman", 12, FontStyle.Strikeout);
Font ufont = new Font("Times New Roman", 12, FontStyle.Underline);
Font bsfont = new Font("Times New Roman", 12,FontStyle.Bold | FontStyle.Strikeout);
int h = font.Height;
g.DrawString("Regular", font, Brushes.Black, 0, 0);
g.DrawString("Bold", bfont, Brushes.Black, 0, h);
g.DrawString("Italic", ifont, Brushes.Black, 0, h * 2);
g.DrawString("Bold-Italic", bifont, Brushes.Black, 0, h * 3);
g.DrawString("Strikeout", sfont, Brushes.Black, 0, h * 4);
g.DrawString("Underline", ufont, Brushes.Black, 0, h * 5);
g.DrawString("Bold & Strikeout", bsfont, Brushes.Black, 0, h * 6);
font.Dispose();
bfont.Dispose();
ifont.Dispose();
bifont.Dispose();
sfont.Dispose();
ufont.Dispose();
bsfont.Dispose();
}
public static void Main() {
Application.Run(new Form1());
}
}
Wide Polyline: DrawLines
using System;
using System.Drawing;
using System.Windows.Forms;
class WidePolyline: Form
{
public static void Main()
{
Application.Run(new WidePolyline());
}
public WidePolyline()
{
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)
{
Pen pen = new Pen(clr, 25);
grfx.DrawLines(pen, new Point[] {
new Point( 25, 100), new Point(125, 100),
new Point(125, 50), new Point(225, 50),
new Point(225, 100), new Point(325, 100) });
}
}