/*
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.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

namespace ClipDraw_c
{
    /// <summary>
    /// Summary description for ClipDraw_c.
    /// </summary>
    public class ClipDraw_c : System.Windows.Forms.Form
    {
        private System.Windows.Forms.Button B1;
        private System.Windows.Forms.Button B2;
        private System.Windows.Forms.Button B3;
        
        internal System.Windows.Forms.Button B4;
        internal System.Windows.Forms.Button B5;
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.Container components = null;

        public ClipDraw_c() {
            //
            // Required for Windows Form Designer support
            //
            InitializeComponent();

            //
            // TODO: Add any constructor code after InitializeComponent call
            //
            this.MouseMove += new MouseEventHandler(this.ClipDraw_cMouse);

        }

        /// <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.B1 = new System.Windows.Forms.Button();
            this.B2 = new System.Windows.Forms.Button();
            this.B3 = new System.Windows.Forms.Button();
            this.B4 = new System.Windows.Forms.Button();
            this.B5 = new System.Windows.Forms.Button();
            this.SuspendLayout();
              // 
            // B1
            // 
            this.B1.Location = new System.Drawing.Point(16, 232);
            this.B1.Name = "B1";
            this.B1.Size = new System.Drawing.Size(56, 24);
            this.B1.TabIndex = 0;
            this.B1.Text = "Clip";
            this.B1.Click += new System.EventHandler(this.B1_Click);
            // 
            // B2
            // 
            this.B2.Location = new System.Drawing.Point(96, 232);
            this.B2.Name = "B2";
            this.B2.Size = new System.Drawing.Size(56, 24);
            this.B2.TabIndex = 1;
            this.B2.Text = "SetClip";
            this.B2.Click += new System.EventHandler(this.B2_Click);
            // 
            // B3
            // 
            this.B3.Location = new System.Drawing.Point(176, 232);
            this.B3.Name = "B3";
            this.B3.Size = new System.Drawing.Size(88, 24);
            this.B3.TabIndex = 2;
            this.B3.Text = "ExcludeClip";
            this.B3.Click += new System.EventHandler(this.B3_Click);
            // 
            // B4
            // 
            this.B4.Location = new System.Drawing.Point(176, 200);
            this.B4.Name = "B4";
            this.B4.Size = new System.Drawing.Size(88, 24);
            this.B4.TabIndex = 4;
            this.B4.Text = "Intersect";
            this.B4.Click += new System.EventHandler(this.B4_Click);
            // 
            // B5
            // 
            this.B5.Location = new System.Drawing.Point(280, 232);
            this.B5.Name = "B5";
            this.B5.Size = new System.Drawing.Size(88, 24);
            this.B5.TabIndex = 5;
            this.B5.Text = "IntersectClip";
            this.B5.Click += new System.EventHandler(this.B5_Click);
            // 
            // ClipDraw_c
            // 
            this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
            this.ClientSize = new System.Drawing.Size(376, 273);
            this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                                                  this.B5,
                                                                  this.B4,
                                                                  this.B3,
                                                                  this.B2,
                                                                  this.B1});
            this.Name = "ClipDraw_c";
            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
            this.Text = "ClipDraw_c";
            this.Load += new System.EventHandler(this.ClipDraw_c_Load);
            this.ResumeLayout(false);

        }
        #endregion

        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main() 
        {
            Application.Run(new ClipDraw_c());
        }

        private Graphics G_obj;

        private void ClipDraw_c_Load(object sender, System.EventArgs e)
        {
    
        }
        private void ClipDraw_cMouse(System.Object sender , MouseEventArgs e) 
        {
            if (G_obj == null)
                return;
            if (G_obj.IsVisible(e.X, e.Y))
                G_obj.FillRectangle(Brushes.BlueViolet, e.X, e.Y, 1, 1);
        }

        private void B1_Click(object sender, System.EventArgs e)
        {
            Graphics G  = this.CreateGraphics();
            Rectangle R = new Rectangle(50, 50, 100, 100);

            G.Clear(Color.Gainsboro);

            //Outline the rectangle and create the clipping region
            G.DrawRectangle(Pens.Black, R);
            G.Clip = new Region(R);

            //Draw line the sidth of the form
            G.DrawLine(Pens.Blue, 0, 75, this.Width, 75);
            //Draw a circle 1/4 inside clipping region
            G.FillEllipse(Brushes.LawnGreen, new Rectangle(75, 75, 150, 150));

            G.Dispose();    
        }

        private void B2_Click(object sender, System.EventArgs e)
        {
            Graphics G = this.CreateGraphics();
            Rectangle R = new Rectangle(20, 20, 100, 100);
            GraphicsPath path = new GraphicsPath();

            G.Clear(Color.Gainsboro);
            path.AddEllipse(R);
            G.DrawPath(Pens.Black, path);
            G.SetClip(path);

            // Draw some clipped strings.
            Font F = new Font("Arial", 16);
            G.DrawString("ABCDEFGHIJKLM", F, Brushes.DeepPink, 15, 25);
            G.DrawString("NOPQRSTUVWXYZ", F, Brushes.DeepPink, 15, 68);

            path.Dispose();

        }

        private void B3_Click(object sender, System.EventArgs e)
        {
            Graphics G = this.CreateGraphics();
            Rectangle R = new Rectangle(40, 20, 100, 100);
            GraphicsPath path = new GraphicsPath();

            G.Clear(Color.Gainsboro);
            path.AddEllipse(R);
            G.DrawPath(Pens.Black, path);
            G.ExcludeClip(new Region(path));

            // Draw some clipped strings.
            Font F = new Font("Arial", 16);
            G.DrawString("ABCDEFGHIJKLM", F, Brushes.DeepPink, 15, 25);
            G.DrawString("NOPQRSTUVWXYZ", F, Brushes.DeepPink, 15, 68);

            path.Dispose();    
            F.Dispose();
        }

        private void B4_Click(object sender, System.EventArgs e)
        {
      Graphics G = this.CreateGraphics();
      Rectangle R = new Rectangle(40, 20, 100, 100);
      Rectangle R2 = new Rectangle(60, 20, 120, 120);
      GraphicsPath P1 = new GraphicsPath();
      GraphicsPath P2 = new GraphicsPath();

      G.Clear(Color.Gainsboro);
      P1.AddEllipse(R);
      G.DrawPath(Pens.Black, P1);

      P2.AddEllipse(R2);
      G.DrawPath(Pens.Black, P2);

      G.SetClip(P1);
      G.SetClip(P2, CombineMode.Intersect);

      // Draw some clipped strings.
      Font F = new Font("Arial", 16);
      G.DrawString("ABCDEFGHIJKLM", F, Brushes.DeepPink, 15, 25);
      G.DrawString("NOPQRSTUVWXYZ", F, Brushes.DeepPink, 15, 68);

      G_obj = G;
      F.Dispose();
      P1.Dispose();     
      P2.Dispose();     
    }

    private void B5_Click(object sender, System.EventArgs e)
    {
      //Bail out if not set
      if (G_obj == null )
        return;
      Rectangle R2 = new Rectangle(75, 75, 150, 150);

      G_obj.IntersectClip(R2);
      G_obj.FillRectangle(new SolidBrush(Color.Blue), 0, 0, 500, 500);
    }
    }
}


           
          

using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;

class ClippingCombinations: Form
{
string strCaption = “CombineMode = “;
MenuItem miCombineMode;

public static void Main()
{
Application.Run(new ClippingCombinations());
}
protected override void OnPaint(PaintEventArgs pea)
{
DoPage(pea.Graphics, ForeColor,ClientSize.Width, ClientSize.Height);
}
public ClippingCombinations()
{
ResizeRedraw = true;

Menu = new MainMenu();
Menu.MenuItems.Add(“&CombineMode”);

EventHandler ehClick = new EventHandler(MenuCombineModeOnClick);

for (int i = 0; i < 6; i++) { MenuItem mi = new MenuItem("&" + (CombineMode)i); mi.Click += ehClick; mi.RadioCheck = true; Menu.MenuItems[0].MenuItems.Add(mi); } miCombineMode = Menu.MenuItems[0].MenuItems[0]; miCombineMode.Checked = true; } void MenuCombineModeOnClick(object obj, EventArgs ea) { miCombineMode.Checked = false; miCombineMode = (MenuItem) obj; miCombineMode.Checked = true; Text = strCaption + (CombineMode)miCombineMode.Index; Invalidate(); } protected void DoPage(Graphics grfx, Color clr, int cx, int cy) { GraphicsPath path = new GraphicsPath(); path.AddEllipse(0, 0, 2 * cx / 3, cy); grfx.SetClip(path); path.Reset(); path.AddEllipse(cx / 3, 0, 2 * cx / 3, cy); grfx.SetClip(path, (CombineMode)miCombineMode.Index); grfx.FillRectangle(Brushes.Red, 0, 0, cx, cy); } } [/csharp]

   
 

using System;
using System.Collections.Generic;
using System.ComponentModel;
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);

    String s = "text";
    Font f = new Font("Times New Roman", 12);
    SizeF sf = g.MeasureString(s, f, 400);
    RectangleF rf = new RectangleF(10, 10, sf.Width, sf.Height);

    g.DrawString(s, f, Brushes.Black, rf);
    f.Dispose();
    Console.WriteLine("Clipping region painted: " + e.ClipRectangle);
    }
    public static void Main() {
        Application.Run(new Form1());
    }
}

    

   
 
using System;
using System.Collections.Generic;
using System.ComponentModel;
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);
    Rectangle rect = new Rectangle(10, 10, 80, 50);
    g.DrawRectangle(Pens.Black, rect);
    g.SetClip(rect);
    g.FillEllipse(Brushes.Blue, 20, 20, 100, 100);
    }
    public static void Main() {
        Application.Run(new Form1());
    }
}

    

using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;

class HexagonGradientBrush: Form
{
const float fSide = 50; // Side (also radius) of hexagon

public static void Main()
{
Application.Run(new HexagonGradientBrush());
}
public HexagonGradientBrush()
{
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)
{
float fHalf = fSide * (float) Math.Sin(Math.PI / 3);

PointF[] aptf = {new PointF( fSide, 0),
new PointF( fSide * 1.5f, 0),
new PointF( fSide, 0),
new PointF( fSide / 2, -fHalf),
new PointF(-fSide / 2, -fHalf),
new PointF(-fSide, 0),
new PointF(-fSide * 1.5f, 0),
new PointF(-fSide, 0),
new PointF(-fSide / 2, fHalf),
new PointF( fSide / 2, fHalf) };

PathGradientBrush pgbrush1 = new PathGradientBrush(aptf, WrapMode.Tile);

for (int i = 0; i < aptf.Length; i++) { aptf[i].X += fSide * 1.5f; aptf[i].Y += fHalf; } PathGradientBrush pgbrush2 = new PathGradientBrush(aptf, WrapMode.Tile); grfx.FillRectangle(pgbrush1, 0, 0, cx, cy); grfx.FillRectangle(pgbrush2, 0, 0, cx, cy); } } [/csharp]

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

using System.Drawing.Drawing2D; // LinearGradientBrush

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

public HatchBrushStyles()
{
InitializeComponent();
this.Size = new Size(500, 150);
}

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

#region Windows Form Designer generated code
private void InitializeComponent()
{
this.components = new System.ComponentModel.Container();
this.Size = new System.Drawing.Size(300,300);
this.Text = “HatchBrushStyles”;
}
#endregion

[STAThread]
static void Main()
{
Application.Run(new HatchBrushStyles());
}
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);
Color cb = Color.Red, cf =Color.White;

int wi = 30, hi = 25, rectNb = 14;
int x, y;
HatchBrush hb = null;
for(int i = 0; i < 53; i++) { x = (int)(i % rectNb); y = (int)(i / rectNb); hb = new HatchBrush((HatchStyle)i, cf, cb); g.FillRectangle(hb, 2 + x*(5 + wi), 2 + y*(5 + hi), wi, hi); } fb.Dispose(); hb.Dispose(); g.Dispose(); } } } [/csharp]

   

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

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

        public HatchBrushes()
        {
            InitializeComponent();
        }

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

        #region Windows Form Designer generated code
        private void InitializeComponent()
        {
            this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
            this.ClientSize = new System.Drawing.Size(564, 390);
            this.Resize += new System.EventHandler(this.HatchBrushes_Resize);
            this.Paint += new System.Windows.Forms.PaintEventHandler(this.HatchBrushes_Paint);

        }
        #endregion

        private void HatchBrushes_Resize(object sender, System.EventArgs e)
        {
            this.Invalidate();
        }

        private void HatchBrushes_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
        {
            HatchBrush myBrush;
            int y = 20;
            int x = 20;

            foreach (HatchStyle brushStyle in System.Enum.GetValues(typeof(HatchStyle)))
            {
                myBrush = new HatchBrush(brushStyle, Color.Blue, Color.LightYellow);

                e.Graphics.FillRectangle(myBrush, x, y, 40, 20);

                e.Graphics.DrawString(brushStyle.ToString(), new Font("Tahoma", 8), 
                    Brushes.Black, 50 + x, y + 5);

                y += 30;
                if ((y + 30) > this.ClientSize.Height)
                {
                    y = 20;
                    x += 180;
                }
            }

        }

        [STAThread]
        static void Main() 
        {
            Application.Run(new HatchBrushes());
        }
    }
}