// Imports the source font associated to the given command line options.
public void Import(CommandLineOptions options)
{
if (options == null)
{
throw new NullReferenceException("The given command line options may not be equal to null.");
}
// Load the source bitmap.
Bitmap bitmap;
try {
bitmap = new Bitmap(options.SourceFont);
}
catch {
throw new Exception(string.Format("Unable to load '{0}'.", options.SourceFont));
}
// Convert to our desired pixel format.
bitmap = BitmapUtils.ConvertToPixelFormat(bitmap, PixelFormat.Format32bppArgb);
// What characters are included in this font?
var characters = CharacterRegion.Flatten(options.CharacterRegions).ToArray();
int characterIndex = 0;
char currentCharacter = '\0';
// Split the source image into a list of individual glyphs.
var glyphList = new List <Glyph>();
Glyphs = glyphList;
LineSpacing = 0;
foreach (Rectangle region in BitmapUtils.GetGlyphRegions(bitmap, IsMarkerColor))
{
if (characterIndex < characters.Length)
{
currentCharacter = characters[characterIndex];
}
++currentCharacter;
glyphList.Add(new Glyph(currentCharacter, bitmap, region));
LineSpacing = Math.Max(LineSpacing, region.Height);
}
// If the bitmap doesn't already have an alpha channel, create one now.
if (BitmapUtils.MatchesAlpha(255, bitmap))
{
BitmapUtils.ConvertGreyToAlpha(bitmap);
}
}
// Crops unused space from around the edge of a glyph bitmap.
public static void Crop(Glyph glyph)
{
if (glyph == null)
{
throw new NullReferenceException("The given glyph may not be equal to null.");
}
// Crop the top.
while ((glyph.Region.Height > 1) && BitmapUtils.MatchesAlpha(0, glyph.Bitmap, new Rectangle(glyph.Region.X, glyph.Region.Y, glyph.Region.Width, 1)))
{
++glyph.Region.Y;
--glyph.Region.Height;
++glyph.OffsetY;
}
// Crop the bottom.
while ((glyph.Region.Height > 1) && BitmapUtils.MatchesAlpha(0, glyph.Bitmap, new Rectangle(glyph.Region.X, glyph.Region.Bottom - 1, glyph.Region.Width, 1)))
{
--glyph.Region.Height;
}
// Crop the left.
while ((glyph.Region.Width > 1) && BitmapUtils.MatchesAlpha(0, glyph.Bitmap, new Rectangle(glyph.Region.X, glyph.Region.Y, 1, glyph.Region.Height)))
{
++glyph.Region.X;
--glyph.Region.Width;
++glyph.OffsetX;
}
// Crop the right.
while ((glyph.Region.Width > 1) && BitmapUtils.MatchesAlpha(0, glyph.Bitmap, new Rectangle(glyph.Region.Right - 1, glyph.Region.Y, 1, glyph.Region.Height)))
{
--glyph.Region.Width;
++glyph.AdvanceX;
}
}