private void Load(CharacterMapChunk map, CharacterWidthChunk widths, CharacterGlyphChunk glyphs)
{
this.characters = new List <Character>(map.Mappings.Count);
this.type = map.MapType;
foreach (int code in map.Mappings.Keys)
{
int index = map.Mappings[code];
if (index != Blank)
{
Character c = new Character(code, glyphs.Glyphs[index], widths.XOffsets[index], widths.Widths[index], widths.NextOffsets[index]);
this.characters.Add(c);
}
}
}
/// <summary>
/// Writes the font to its associated file.
/// </summary>
public void Save()
{
this.cglpChunk.ReadFrom(this);
this.cwdhChunk.ReadFrom(this);
this.finfChunk.GlyphSectionOffset = this.header.Size + this.finfChunk.Size;
this.finfChunk.WidthSectionOffset = this.finfChunk.GlyphSectionOffset + this.cglpChunk.Size;
this.finfChunk.MapSectionOffset = this.finfChunk.WidthSectionOffset + this.cwdhChunk.Size;
this.cmapChunks.Clear();
int cmapOffset = this.finfChunk.MapSectionOffset;
foreach (CharacterSet characterSet in this.characterSets)
{
CharacterMapChunk cmapChunk = new CharacterMapChunk();
cmapChunk.ReadFrom(characterSet, this.codes);
cmapOffset += cmapChunk.Size;
cmapChunk.NextChunkOffset = cmapOffset;
this.cmapChunks.Add(cmapChunk);
}
this.cmapChunks[this.cmapChunks.Count - 1].NextChunkOffset = 0;
this.header.SectionCount = 3 + this.cmapChunks.Count;
this.header.FileSize = cmapOffset;
MemoryStream contents = new MemoryStream();
this.header.WriteTo(contents);
this.finfChunk.WriteTo(contents);
this.cglpChunk.WriteTo(contents);
this.cwdhChunk.WriteTo(contents);
for (int i = 0; i < this.cmapChunks.Count; i++)
{
this.cmapChunks[i].WriteTo(contents);
}
StreamHelper.WriteFile(this.fileName, contents.ToArray());
}
/// <summary>
/// Reads the font from its associated file.
/// </summary>
public void Load()
{
byte[] fileData = StreamHelper.ReadFile(this.fileName);
this.header = new NitroHeader("RTFN");
this.header.ReadFrom(fileData, 0);
this.finfChunk = new FontInfoSection();
int finfOffset = this.header.Size;
this.finfChunk.ReadFrom(fileData, finfOffset);
this.cwdhChunk = new CharacterWidthChunk();
this.cwdhChunk.ReadFrom(fileData, this.finfChunk.WidthSectionOffset);
int characterCount = this.cwdhChunk.Widths.Count;
this.cglpChunk = new CharacterGlyphChunk(characterCount);
this.cglpChunk.ReadFrom(fileData, this.finfChunk.GlyphSectionOffset);
int cmapCount = this.header.SectionCount - 3;
int cmapOffset = this.finfChunk.MapSectionOffset;
this.cmapChunks = new List <CharacterMapChunk>();
this.characterSets = new List <CharacterSet>();
for (int i = 0; i < cmapCount; i++)
{
CharacterMapChunk cmapChunk = new CharacterMapChunk();
cmapChunk.ReadFrom(fileData, cmapOffset);
cmapOffset = cmapChunk.NextChunkOffset;
this.cmapChunks.Add(cmapChunk);
this.characterSets.Add(new CharacterSet(cmapChunk, this.cwdhChunk, this.cglpChunk));
}
this.RebuildIndices();
}
/// <summary>
/// Initializes a new instance of the CharacterSet class by reading the appropriate chunks from the font.
/// </summary>
/// <param name="map">The map between characters and their numerical codes.</param>
/// <param name="widths">The width and offset data for all characters in the font.</param>
/// <param name="glyphs">The graphical glyphs for all characters in the font.</param>
public CharacterSet(CharacterMapChunk map, CharacterWidthChunk widths, CharacterGlyphChunk glyphs)
{
this.Load(map, widths, glyphs);
}
