Font.jvm.cs :  » 2.6.4-mono-.net-core » System.Drawing » System » Drawing » C# / CSharp Open Source

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C# / CSharp Open Source » 2.6.4 mono .net core » System.Drawing 
System.Drawing » System » Drawing » Font.jvm.cs

using System.Runtime.Serialization;
using System.Runtime.InteropServices;
using System.ComponentModel;
using awtjava.awt;
using TextAttributejava.awt.font.TextAttribute;

namespace System.Drawing{
  [Serializable]
  public sealed class Font: MarshalByRefObject, ISerializable, ICloneable, IDisposable {

    #region variables

    const byte DEFAULT_CHARSET = 1;

    private readonly GraphicsUnit _gUnit = GraphicsUnit.Point;
    private readonly FontFamily _fontFamily;
    private readonly awt.Font _jFont;
    private readonly byte _charset;

    static readonly float [] _screenResolutionConverter = {
                             1,                // World
                             1,                // Display
                             1,                // Pixel
                             Graphics.DefaultScreenResolution,  // Point
                             Graphics.DefaultScreenResolution,  // Inch
                             Graphics.DefaultScreenResolution,  // Document
                             Graphics.DefaultScreenResolution    // Millimeter
                           };

#if NET_2_0
    private readonly string _systemFontName;
#endif

    #endregion

    internal awt.Font NativeObject {
      get {
        return _jFont;
      }
    }

    #region ISerializable

    void ISerializable.GetObjectData(SerializationInfo info, StreamingContext context) {
      info.AddValue("Name", Name);
      info.AddValue("Size", Size);
      info.AddValue("Style", Style, typeof(FontStyle));
      info.AddValue("Unit", Unit, typeof(GraphicsUnit));
    }

    #endregion

    #region ctors

    private Font (SerializationInfo info, StreamingContext context)
      : this(
      info.GetString("Name"), 
      info.GetSingle("Size"), 
      (FontStyle)info.GetValue("Style", typeof(FontStyle)), 
      (GraphicsUnit)info.GetValue("Unit", typeof(GraphicsUnit)) ) {
    }

    public Font(Font original, FontStyle style) {
      _jFont = original.NativeObject.deriveFont( DeriveStyle(original.NativeObject.getAttributes(), style, true) );
      _gUnit = original._gUnit;
      _fontFamily = original._fontFamily;
      _charset = original._charset;
    }

    public Font(FontFamily family, float emSize)
      : this(family, emSize, FontStyle.Regular, GraphicsUnit.Point, DEFAULT_CHARSET, false) {
    }

    public Font(FontFamily family, float emSize, FontStyle style)
      : this(family, emSize, style, GraphicsUnit.Point, DEFAULT_CHARSET, false) {
    }
    public Font(FontFamily family, float emSize, GraphicsUnit unit)
      : this(family, emSize, FontStyle.Regular, unit, DEFAULT_CHARSET, false) {
    }

    public Font(FontFamily family, float emSize, FontStyle style, GraphicsUnit unit)
      : this(family, emSize, style, unit, DEFAULT_CHARSET, false) {
    }

    public Font(FontFamily family, float emSize, FontStyle style, GraphicsUnit unit, byte charSet)
      : this(family, emSize, style, unit, charSet, false) {
    }
    
    public Font(FontFamily family, float emSize, FontStyle style, GraphicsUnit unit, byte charSet, bool isVertical) {
      if (family == null)
        throw new ArgumentNullException("family");

      _gUnit = unit;
      _fontFamily = family;
      _charset = charSet;

      java.util.Hashtable attribs = new java.util.Hashtable();
      attribs.put(TextAttribute.FAMILY, family.Name/*TODO: family doungrade possibility*/);
      //init defaults
      attribs.put(TextAttribute.POSTURE, TextAttribute.POSTURE_REGULAR);

      float newSize = emSize * Graphics.UnitConversion[ (int)_gUnit ];
      attribs.put(TextAttribute.SIZE, new java.lang.Float(newSize));

      DeriveStyle(attribs, style, false);

      _jFont = family.FamilyFont.deriveFont(attribs);
    }

    public Font(string familyName, float emSize)
      : this(familyName, emSize, FontStyle.Regular, GraphicsUnit.Point, (byte)0, false) {
    }

    public Font(string familyName, float emSize, FontStyle style)
      : this(familyName, emSize, style, GraphicsUnit.Point, (byte)0, false) {
    }

    public Font(string familyName, float emSize, GraphicsUnit unit)
      : this(familyName, emSize, FontStyle.Regular, unit, (byte)0, false) {
    }
    
    public Font(string familyName, float emSize, FontStyle style, GraphicsUnit unit)
      : this(familyName, emSize, style, unit, (byte)0, false) {
    }
    
    public Font(string familyName, float emSize, FontStyle style, GraphicsUnit unit, byte charSet)
      : this(familyName, emSize, style, unit, charSet, false) {
    }
    
    public Font(string familyName, float emSize, FontStyle style, GraphicsUnit unit, byte charSet, bool isVertical)
      : this (GetFontFamily (familyName), emSize, style, unit, charSet, isVertical) {
    }

#if NET_2_0
    internal Font (string familyName, float emSize, string systemName)
      : this (familyName, emSize) {
      _systemFontName = systemName;
    }
#endif

    static FontFamily GetFontFamily (string familyName) {
#if ONLY_1_1
      if (familyName == null)
        throw new ArgumentNullException ("familyName");
#endif
      // NOTE: If family name is null, empty or invalid,
      // MS creates Microsoft Sans Serif font.
      try {
        return new FontFamily (familyName);
      }
      catch {
        return FontFamily.GenericSansSerif;
      }
    }

    #endregion
    
    #region IDisposable members

    public void Dispose() {
    }

    #endregion

    #region ICloneable

    public object Clone() {
      return (Font)MemberwiseClone();
    }

    #endregion

    public override bool Equals (object obj)
    {
      Font other = obj as Font;
      if (other == null) {
        return false;
      }

      return NativeObject.Equals (other.NativeObject);
    }

    public override int GetHashCode ()
    {
      return NativeObject.GetHashCode ();
    }

#if INTPTR_SUPPORT
    [MonoTODO]
    public IntPtr ToHfont ()
    {
      throw new NotImplementedException();
    }
#endif
    
    #region public properties

    public bool Bold {
      get {
        return _jFont.isBold();
      }
    }
    
    public FontFamily FontFamily {
      get {        
        return _fontFamily;
      }
    }
    
    public byte GdiCharSet {
      get {
        return _charset;
      }
    }
    
    public bool GdiVerticalFont {
      get {
        return Name.StartsWith("@");
      }
    }
    
    public int Height {
      get {
        return FontFamily.Container.getFontMetrics(NativeObject).getHeight();
      }
    }

    public float GetHeight () {
      return GetHeight (Graphics.DefaultScreenResolution);
    }

    public float GetHeight (float dpi) {
      return (FontFamily.GetLineSpacing (Style) / FontFamily.GetEmHeight (Style))
        * (SizeInPoints / _screenResolutionConverter [(int) Unit])
        * dpi;
    }

    public float GetHeight (Graphics graphics) {
      if (graphics == null)
        throw new ArgumentNullException ("graphics");
      return GetHeight (graphics.DpiY);
    }

    public bool Italic {
      get {
        return _jFont.isItalic();
      }
    }

    public string Name {
      get {
        return _jFont.getName();
      }
    }

    public float Size {
      get {
        return SizeInPoints / Graphics.UnitConversion[ (int)_gUnit ];
      }
    }
    
    public float SizeInPoints {
      get {
        return _jFont.getSize2D();
      }
    }
    
    public bool Strikeout {
      get {
        try {
          if((java.lang.Boolean)_jFont.getAttributes().get(TextAttribute.STRIKETHROUGH) 
            == TextAttribute.STRIKETHROUGH_ON )
            return true;
        }
        catch {
        }
        return false;
      }
    }
    
    public FontStyle Style {
      get {
        FontStyle style = FontStyle.Regular;
        if (Bold)
          style |= FontStyle.Bold;
        if (Italic)
          style |= FontStyle.Italic;
        if (Underline)
          style |= FontStyle.Underline;
        if (Strikeout)
          style |= FontStyle.Strikeout;

        return style;
      }
    }
    
    public bool Underline {
      get {
        try {
          if((java.lang.Integer)_jFont.getAttributes().get(TextAttribute.UNDERLINE) 
            == TextAttribute.UNDERLINE_ON )
            return true;
        }
        catch {
        }
        return false;
      }
    }

    [TypeConverter(typeof(FontConverter.FontUnitConverter))]
    public GraphicsUnit Unit {
      get {
        return _gUnit;
      }
    }

#if NET_2_0
    [Browsable (false)]
    public bool IsSystemFont {
      get {
        return !string.IsNullOrEmpty (_systemFontName);
      }
    }

    [Browsable (false)]
    public string SystemFontName {
      get {
        return _systemFontName;
      }
    }
#endif

    #endregion
    
    public override System.String ToString() {
      return ("[Font: Name="+ Name +", Size="+ Size +", Style="+ Style +", Units="+ Unit +"]");      
    }

    static internal java.util.Map DeriveStyle(java.util.Map attribs, FontStyle style, bool createNew) {
      java.util.Map newAttribs;
      if (createNew) {
        newAttribs = new java.util.Hashtable( attribs.size() );
        java.util.Iterator it = attribs.keySet().iterator();
        while (it.hasNext ()) {
          object key = it.next ();
          object value = attribs.get (key);
          if (value != null)
            newAttribs.put (key, value);
        }
      }
      else
        newAttribs = attribs;

      //Bold
      if((style & FontStyle.Bold) == FontStyle.Bold)
        newAttribs.put(TextAttribute.WEIGHT, TextAttribute.WEIGHT_BOLD);
      else
        newAttribs.remove(TextAttribute.WEIGHT);

      //Italic
      if((style & FontStyle.Italic) == FontStyle.Italic)
        newAttribs.put(TextAttribute.POSTURE, TextAttribute.POSTURE_OBLIQUE);
      else
        newAttribs.put(TextAttribute.POSTURE, TextAttribute.POSTURE_REGULAR);

      //Underline
      if((style & FontStyle.Underline) == FontStyle.Underline)
        newAttribs.put(TextAttribute.UNDERLINE, TextAttribute.UNDERLINE_ON);
      else
        newAttribs.remove(TextAttribute.UNDERLINE);

      //Strikeout
      if((style & FontStyle.Strikeout) == FontStyle.Strikeout)
        newAttribs.put(TextAttribute.STRIKETHROUGH, TextAttribute.STRIKETHROUGH_ON);
      else
        newAttribs.remove(TextAttribute.STRIKETHROUGH);

      return newAttribs;
    }
  }
}
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