141 lines
3.8 KiB
C#
141 lines
3.8 KiB
C#
#region --- License ---
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/* Copyright (c) 2006, 2007 Stefanos Apostolopoulos
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* See license.txt for license info
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*/
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#endregion
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using System;
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using System.Collections.Generic;
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using System.Text;
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using System.Drawing;
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namespace OpenTK.Fonts
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{
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/// <summary>
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/// Represents a single character of a specific Font.
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/// </summary>
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class Glyph : IPackable<Glyph>
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{
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char character;
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Font font;
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int width;
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static Bitmap bmp = new Bitmap(1, 1);
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object obj = new object();
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#region --- Constructors ---
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/// <summary>
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/// Constructs a new Glyph that represents the given character and Font.
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/// </summary>
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/// <param name="c">The character to represent.</param>
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/// <param name="f">The Font of the character.</param>
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public Glyph(char c, Font f)
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{
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if (f == null)
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throw new ArgumentNullException("f", "You must specify a valid font");
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character = c;
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font = f;
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}
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#endregion
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#region public char Character
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/// <summary>
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/// Gets the character represented by this Glyph.
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/// </summary>
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public char Character
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{
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get { return character; }
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private set { character = value; }
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}
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#endregion
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#region public Font Font
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/// <summary>
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/// Gets the Font of this Glyph.
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/// </summary>
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public Font Font
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{
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get { return font; }
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private set
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{
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if (value == null)
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throw new ArgumentNullException("Font", "Glyph font cannot be null");
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font = value;
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}
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}
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#endregion
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#region IPackable<T> Members
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/// <summary>
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/// Gets an integer representing the width of the Glyph in pixels.
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/// </summary>
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public int Width
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{
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get
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{
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if (width == 0)
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{
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lock (obj)
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using (Graphics gfx = Graphics.FromImage(bmp))
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{
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float w = gfx.MeasureString(Character.ToString(), font).Width;
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width = (int)System.Math.Ceiling(w);
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}
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}
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return width;
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}
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}
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/// <summary>
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/// Gets an integer representing the height of the Glyph in pixels.
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/// </summary>
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public int Height
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{
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get
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{
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return font.Height;
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}
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}
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#endregion
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public override bool Equals(object obj)
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{
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if (obj is Glyph)
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return this.Equals((Glyph)obj);
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return base.Equals(obj);
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}
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public override string ToString()
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{
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return String.Format("'{0}', {1} {2}, {3} {4}", Character, Font.Name, font.Style, font.Size, font.Unit);
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}
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public override int GetHashCode()
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{
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return character.GetHashCode() ^ font.Style.GetHashCode() ^ font.Size.GetHashCode() ^ font.Unit.GetHashCode();
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}
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#region IEquatable<Glyph> Members
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/// <summary>
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/// Compares the current Glyph with the given Glyph.
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/// </summary>
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/// <param name="other">The Glyph to compare to.</param>
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/// <returns>True if both Glyphs represent the same character of the same Font, false otherwise.</returns>
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public bool Equals(Glyph other)
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{
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return Character == other.Character && Font == other.Font;
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}
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#endregion
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}
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}
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