/// <summary>
/// Function to read the kerning pairs for the font, if they exist.
/// </summary>
/// <param name="fontFile">Font file to read.</param>
private static Dictionary <GorgonKerningPair, int> ReadKernPairs(GorgonChunkFileReader fontFile)
{
var result = new Dictionary <GorgonKerningPair, int>();
GorgonBinaryReader reader = fontFile.OpenChunk(KernDataChunk);
// Read optional kerning information.
int kernCount = reader.ReadInt32();
for (int i = 0; i < kernCount; ++i)
{
var kernPair = new GorgonKerningPair(reader.ReadChar(), reader.ReadChar());
result[kernPair] = reader.ReadInt32();
}
fontFile.CloseChunk();
return(result);
}
/// <summary>
/// Function to read in the kerning information.
/// </summary>
/// <param name="fontInfo">The font information to update.</param>
/// <param name="reader">The reader that is reading the file data.</param>
private static void ParseKerning(BmFontInfo fontInfo, StreamReader reader)
{
if (reader.EndOfStream)
{
fontInfo.UseKerningPairs = false;
return;
}
string countLine = reader.ReadLine();
if (string.IsNullOrWhiteSpace(countLine))
{
fontInfo.UseKerningPairs = false;
return;
}
string[] lineItems = countLine.Split(new[]
{
' '
},
StringSplitOptions.RemoveEmptyEntries);
Dictionary <string, string> keyValues = GetLineKeyValuePairs(lineItems);
if (!keyValues.ContainsKey(KerningCountLine))
{
throw new GorgonException(GorgonResult.CannotRead, Resources.GORGFX_ERR_FONT_FILE_FORMAT_INVALID);
}
int count = Convert.ToInt32(keyValues[CountTag]);
if (count < 1)
{
fontInfo.UseKerningPairs = false;
return;
}
fontInfo.UseKerningPairs = true;
// Iterate through the characters so we have enough info to build out glyph data.
for (int i = 0; i < count; ++i)
{
string line = reader.ReadLine();
if (string.IsNullOrWhiteSpace(line))
{
throw new GorgonException(GorgonResult.CannotRead, Resources.GORGFX_ERR_FONT_FILE_FORMAT_INVALID);
}
lineItems = line.Split(new[]
{
' '
},
StringSplitOptions.RemoveEmptyEntries);
keyValues = GetLineKeyValuePairs(lineItems);
if (!keyValues.ContainsKey(KerningLine))
{
throw new GorgonException(GorgonResult.CannotRead, Resources.GORGFX_ERR_FONT_FILE_FORMAT_INVALID);
}
var pair = new GorgonKerningPair(Convert.ToChar(Convert.ToInt32(keyValues[KernFirstTag])), Convert.ToChar(Convert.ToInt32(keyValues[KernSecondTag])));
fontInfo.KerningPairs[pair] = Convert.ToInt32(keyValues[KernAmountTag]);
}
}
