Csharp/CSharp Tutorial/2D

Материал из .Net Framework эксперт
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All in the font family: Ascent, Descent, Line spacing, Height

<source lang="csharp">using System; using System.Drawing; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data;

public class FontFamilyAscentDescentLineHeight : System.Windows.Forms.Form { 

 private System.ruponentModel.Container components = null;
 public FontFamilyAscentDescentLineHeight()
 {
   InitializeComponent();
 }
 protected override void Dispose( bool disposing )
 {
   if( disposing )
   {
     if (components != null) 
     {
       components.Dispose();
     }
   }
   base.Dispose( disposing );
 }
 private void InitializeComponent()
 {
   this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
   this.ClientSize = new System.Drawing.Size(392, 237);
   this.Paint += new System.Windows.Forms.PaintEventHandler(this.OnPaint);
 }
 [STAThread]
 static void Main() 
 {
   Application.Run(new FontFamilyAscentDescentLineHeight());
 }
 protected void OnPaint (object sender, System.Windows.Forms.PaintEventArgs e)
 {
   Graphics g = e.Graphics;
   FontFamily myFamily = new FontFamily("Verdana");
   Font myFont = new Font(myFamily, 12);
   
   int y = 0;
   int fontHeight = myFont.Height;
   this.Text = "Measurements are in GraphicsUnit." + myFont.Unit.ToString();
   g.DrawString("The Verdana family.", myFont, Brushes.Blue, 10, y);
   Console.WriteLine("Ascent for bold Verdana: " + myFamily.GetCellAscent(FontStyle.Bold));
   Console.WriteLine("Descent for bold Verdana: " + myFamily.GetCellDescent(FontStyle.Bold));
   Console.WriteLine("Line spacing for bold Verdana: " + myFamily.GetLineSpacing(FontStyle.Bold));
   Console.WriteLine("Height for bold Verdana: " + myFamily.GetEmHeight(FontStyle.Bold));
 }

}</source>

Draw centered text

<source lang="csharp">using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Windows.Forms; 

 class Form1 : Form
 {
   public Form1()
   {
     SetStyle(ControlStyles.Opaque, true);
     Bounds = new Rectangle(0, 0, 500, 300);
   }
   protected override void OnPaint(PaintEventArgs e)
   {
     Graphics g = e.Graphics;
     int y = 0;
     g.FillRectangle(Brushes.White, ClientRectangle);
     // draw multiline text
     Font trFont = new Font("Times New Roman", 12);
     Rectangle rect = new Rectangle(0, y, 400, trFont.Height * 3);
     g.DrawRectangle(Pens.Blue, rect);
     String longString = "this is a test. ";
     longString += "this is a test. this is a test. this is a test. this is a test. ";
     longString += "this is a test. this is a test. this is a test. this is a test. ";
     longString += "this is a test. this is a test. this is a test. this is a test. ";
     g.DrawString(longString, trFont, Brushes.Black, rect);
     trFont.Dispose();
   }
 
   [STAThread]
   static void Main()
   {
     Application.EnableVisualStyles();
     Application.Run(new Form1());
   }
 }</source>

Draw Font Families

<source lang="csharp">using System; using System.Drawing; using System.Windows.Forms; public class DrawFontFamilies : Form { 

 public DrawFontFamilies()
 {
   Size = new Size(350,200);
 }
 protected override void OnPaint(PaintEventArgs e)
 {
   base.OnPaint(e);
   float x= 10;
   float y= 10;
   Font fnt;
   Graphics g = e.Graphics;
   FontFamily[] ffArray = FontFamily.Families;
   foreach( FontFamily ff in ffArray )
   {
     if (ff.IsStyleAvailable(FontStyle.Regular))
     {
       fnt = new Font(ff, 10);
       g.DrawString(ff.Name, fnt, Brushes.Black, x, y);
       Brush b = new SolidBrush(ForeColor);
       g.DrawString(ff.Name, fnt, b, x, y);
       y += fnt.GetHeight();
     }
   }
 }
 static void Main() 
 {
   Application.Run(new DrawFontFamilies());
 }

}</source>

Draw Font Families Formatted

<source lang="csharp">using System; using System.Drawing; using System.Windows.Forms; public class DrawFontFamiliesFormatted : Form { 

 public DrawFontFamiliesFormatted()
 {
   ResizeRedraw = true;
 }
 protected override void OnPaint(PaintEventArgs e)
 {
   base.OnPaint(e);
   float y= 10;
   Font fnt;
   Graphics g = e.Graphics;
   StringFormat fmt = new StringFormat();
   fmt.Alignment = StringAlignment.Center;
   FontFamily[] ffArray = FontFamily.Families;
   foreach( FontFamily ff in ffArray )
   {
     if (ff.IsStyleAvailable(FontStyle.Regular))
     {
       fnt = new Font(ff, 10);
       Brush b = new SolidBrush(ForeColor);
       g.DrawString(ff.Name, fnt, b, ClientSize.Width / 2, (int)y, fmt);
       y += fnt.GetHeight();
     }
   }
 }
 static void Main() 
 {
   Application.Run(new DrawFontFamiliesFormatted());
 }

}</source>

Draw left justified text based on font size

<source lang="csharp">using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Windows.Forms; 

 class Form1 : Form
 {
   public Form1()
   {
     SetStyle(ControlStyles.Opaque, true);
     Bounds = new Rectangle(0, 0, 500, 300);
   }
   protected override void OnPaint(PaintEventArgs e)
   {
     Graphics g = e.Graphics;
     int y = 0;
     g.FillRectangle(Brushes.White, ClientRectangle);
     // draw left justified text
     Rectangle rect = new Rectangle(0, y, 400, Font.Height);
     g.DrawRectangle(Pens.Blue, rect);
     g.DrawString("This text is left justified.", Font,Brushes.Black, rect);
     y += Font.Height + 20;
   }
 
   [STAThread]
   static void Main()
   {
     Application.EnableVisualStyles();
     Application.Run(new Form1());
   }
 }</source>

Draw right justified text based on font size

<source lang="csharp">using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Windows.Forms; 

 class Form1 : Form
 {
   public Form1()
   {
     SetStyle(ControlStyles.Opaque, true);
     Bounds = new Rectangle(0, 0, 500, 300);
   }
   protected override void OnPaint(PaintEventArgs e)
   {
     Graphics g = e.Graphics;
     int y = 0;
     g.FillRectangle(Brushes.White, ClientRectangle);
     Font aFont = new Font("Arial", 16, FontStyle.Bold | FontStyle.Italic);
     Rectangle rect = new Rectangle(0, y, 400, aFont.Height);
     g.DrawRectangle(Pens.Blue, rect);
     StringFormat sf = new StringFormat();
     sf.Alignment = StringAlignment.Far;
     g.DrawString("This text is right justified.", aFont, Brushes.Blue,rect, sf);
     y += aFont.Height + 20;
     aFont.Dispose();
   }
 
   [STAThread]
   static void Main()
   {
     Application.EnableVisualStyles();
     Application.Run(new Form1());
   }
 }</source>

FontStyle.Bold

<source lang="csharp">using System; using System.Drawing; using System.Windows.Forms;

class FontNames: Form { 

    public static void Main()
    {
         Application.Run(new FontNames());
    }
    public FontNames()
    {
         Text = "Font Names";
         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)
    {    
         string[]    astrFonts = { "Courier New", "Arial", 
                                   "Times New Roman" };
         FontStyle[] afs       = { FontStyle.Bold, 
                                   FontStyle.Bold | FontStyle.Italic };
         Brush       brush     = new SolidBrush(clr);
         float       y         = 0;
  
         foreach (string strFont in astrFonts)
         {
              foreach (FontStyle fs in afs)
              {
                   Font font = new Font(strFont, 18, fs);
                   grfx.DrawString(strFont, font, brush, 0, y);
                   y += font.GetHeight(grfx);
              }
         }
    }

}</source>

FontStyle.Italic

<source lang="csharp">using System; using System.Drawing; using System.Windows.Forms;

class FontNames: Form { 

    public static void Main()
    {
         Application.Run(new FontNames());
    }
    public FontNames()
    {
         Text = "Font Names";
         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)
    {    
         string[]    astrFonts = { "Courier New", "Arial", 
                                   "Times New Roman" };
         FontStyle[] afs       = { FontStyle.Italic,  
                                   FontStyle.Bold | FontStyle.Italic };
         Brush       brush     = new SolidBrush(clr);
         float       y         = 0;
  
         foreach (string strFont in astrFonts)
         {
              foreach (FontStyle fs in afs)
              {
                   Font font = new Font(strFont, 18, fs);
                   grfx.DrawString(strFont, font, brush, 0, y);
                   y += font.GetHeight(grfx);
              }
         }
    }

}</source>

FontStyle.Regular

<source lang="csharp">using System; using System.Drawing; using System.Windows.Forms;

class FontNames: Form { 

    public static void Main()
    {
         Application.Run(new FontNames());
    }
    public FontNames()
    {
         Text = "Font Names";
         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)
    {    
         string[]    astrFonts = { "Courier New", "Arial", 
                                   "Times New Roman" };
         FontStyle[] afs       = { FontStyle.Regular, 
                                   FontStyle.Bold | FontStyle.Italic };
         Brush       brush     = new SolidBrush(clr);
         float       y         = 0;
  
         foreach (string strFont in astrFonts)
         {
              foreach (FontStyle fs in afs)
              {
                   Font font = new Font(strFont, 18, fs);
                   grfx.DrawString(strFont, font, brush, 0, y);
                   y += font.GetHeight(grfx);
              }
         }
    }

}</source>

Get Font Height

<source lang="csharp">using System; using System.Drawing; using System.Windows.Forms;

class TwentyFourPointScreenFonts: Form { 

    public static void Main()
    {
         Application.Run(new TwentyFourPointScreenFonts());
    }
    public TwentyFourPointScreenFonts()
    {
         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);
         float  y         = 0;
         Font   font;
         string strFamily = "Times New Roman";
  
         font = new Font(strFamily, 24);
         grfx.DrawString("No GraphicsUnit, 24 points", font, brush, 0, y);
         y += font.GetHeight(grfx);
  
         font = new Font(strFamily, 24, GraphicsUnit.Point);
         grfx.DrawString("GraphicsUnit.Point, 24 units", font, brush, 0, y);

    }

}</source>

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