private void ReadExtendedFrom(BinaryReader reader)
{
_characterAntialiasingMetrics.ReadFrom(reader);
_characterRangesAntialiasing.Clear();
_characterRangesAntialiasing.Capacity = _description.Ranges;
for (int i = 0; i < _description.Ranges; i++)
{
CharacterRangeAntialiasing range = new CharacterRangeAntialiasing();
range.ReadFrom(reader);
_characterRangesAntialiasing.Add(range);
}
_charactersAntialiasing.Clear();
_charactersAntialiasing.Capacity = _description.Characters;
for (int i = 0; i < _description.Characters; i++)
{
CharacterAntialiasing character = new CharacterAntialiasing();
character.ReadFrom(reader);
_charactersAntialiasing.Add(character);
}
if (_description.Characters % 2 == 1)
{
reader.ReadBytes(2);
}
_characterAntialiasingData = reader.ReadBytes((int)_characterAntialiasingMetrics.Size);
int padding = 4 - (int)_characterAntialiasingMetrics.Size % 4;
if (padding < 4)
{
reader.ReadBytes(padding);
}
}
private void FillCharacters(TinyFont font, IEnumerable <CharacterImportInfo> imports, ushort planeNumber)
{
Contract.Requires(font != null, "Font cannot be null.");
Contract.Requires(font.Metrics != null, "Font metrics cannot be null.");
if (font.Metrics.Height == 0)
{
Trace.TraceEvent(TraceEventType.Warning, 0, "TinyFont has a height of zero. No glyphs will be included.");
return;
}
FontPlane plane = planeNumber == 0 ? font.FontPlanes[0] : new FontPlane();
Contract.Requires(plane != null, "Plane cannot be null.");
FillDescription(plane.Description);
uint numberOfCharacters = 0;
bool antialiasing = font.Description.IsExtended;
short firstNonBlankLine = short.MaxValue;
int maxCharacterWidth = font.Metrics.MaximumCharacterWidth;
BitArray antialiasingData = new BitArray(0);
List <BitArray> bitmapData = new List <BitArray>(font.Metrics.Height);
for (int i = 0; i < font.Metrics.Height; i++)
{
bitmapData.Add(new BitArray(0));
}
int lastCharacter = -1;
CharacterRangeDescription rangeDescription = null;
CharacterRangeAntialiasing rangeAntialiasing = null;
foreach (CharacterImportInfo import in imports)
{
Contract.Assert(import.Mapping.Character.Value >= 0 && import.Mapping.Character.Value <= LastPlaneLastCharacter, "All content must have valid two bytes characters.");
Contract.Assert(import.Mapping.Character.Value > lastCharacter, "Content must be ordered by characters and cannot overlap.");
int character = import.Mapping.Character.Value;
// If character does not belong to this plane, skip it
if ((character >> 16) != planeNumber)
{
continue;
}
if (lastCharacter != (character - 1))
{
if (rangeDescription != null)
{
rangeDescription.LastCharacter = (char)lastCharacter;
plane.CharacterRanges.Add(rangeDescription);
if (antialiasing)
{
plane.CharacterRangesAntialiasing.Add(rangeAntialiasing);
}
}
rangeDescription = new CharacterRangeDescription();
rangeDescription.Offset = (uint)bitmapData[0].Length;
rangeDescription.FirstCharacter = (char)character;
rangeDescription.IndexOfFirstCharacter = numberOfCharacters;
if (antialiasing)
{
rangeAntialiasing = new CharacterRangeAntialiasing();
rangeAntialiasing.Offset = (uint)(antialiasingData.Length / BitsPerByte);
}
}
lastCharacter = character;
maxCharacterWidth = Math.Max(maxCharacterWidth, import.InkBox.Width);
++numberOfCharacters;
CharacterDescription characterDescription = new CharacterDescription();
characterDescription.LeftMargin = Helper.FitIntoInt8(import.EmSideBearing.Left, Trace);
characterDescription.RightMargin = Helper.FitIntoInt8(import.EmSideBearing.Right, Trace);
characterDescription.Offset = checked ((ushort)(bitmapData[0].Length - rangeDescription.Offset));
plane.Characters.Add(characterDescription);
if (import.BitmapData != null)
{
AppendBitmap(bitmapData, import);
short glyphFirstNonBlankLine = Helper.FitIntoInt16(import.InkBox.Y, Trace);
if (firstNonBlankLine > glyphFirstNonBlankLine)
{
firstNonBlankLine = glyphFirstNonBlankLine;
}
}
if (antialiasing)
{
CharacterAntialiasing characterAntialiasing = new CharacterAntialiasing();
characterAntialiasing.Offset = import.AntialiasData == null ? CharacterAntialiasing.NoData : checked ((ushort)(antialiasingData.Length / BitsPerByte - rangeAntialiasing.Offset));
plane.CharactersAntialiasing.Add(characterAntialiasing);
if (import.AntialiasData != null)
{
AppendAntialiasing(antialiasingData, import);
int bitPadding = antialiasingData.Length % BitsPerByte;
if (bitPadding > 0)
{
antialiasingData.Length += BitsPerByte - bitPadding;
}
}
}
}
if (numberOfCharacters > 0)
{
if (rangeDescription != null)
{
rangeDescription.LastCharacter = (char)lastCharacter;
plane.CharacterRanges.Add(rangeDescription);
if (antialiasing)
{
plane.CharacterRangesAntialiasing.Add(rangeAntialiasing);
}
}
plane.Metrics.Offset = firstNonBlankLine;
plane.CharacterBitmap.Width = (uint)bitmapData[0].Length;
plane.CharacterBitmap.Height = (uint)(bitmapData.Count - firstNonBlankLine);
plane.CharacterBitmap.BitsPerPixel = 1;
plane.CharacterBitmapData = ToBitmapData(bitmapData, firstNonBlankLine);
if (antialiasing)
{
plane.CharacterAntialiasingData = ToAntialiasingData(antialiasingData);
plane.CharacterAntialiasingMetrics.Size = (uint)plane.CharacterAntialiasingData.Length;
}
font.Metrics.MaximumCharacterWidth = Helper.FitIntoInt16(maxCharacterWidth, Trace);
font.FontPlanes[planeNumber] = plane;
}
}