public BitmapFontData(string fontFile, bool flip)
: this()
{
FontFile = fontFile;
IsFlipped = flip;
using (TextReader reader = new StreamReader(FontFile)) {
reader.ReadLine(); // Info
string line = reader.ReadLine();
if (line == null)
{
throw new IOException("Invalid font file: " + fontFile);
}
string[] common = line.Split(SpaceToken, 4);
if (common.Length < 4)
{
throw new IOException("Invalid font file: " + fontFile);
}
if (!common[1].StartsWith("lineHeight="))
{
throw new IOException("Invalid font file: " + fontFile);
}
LineHeight = int.Parse(common[1].Substring(11));
if (!common[2].StartsWith("base="))
{
throw new IOException("Invalid font file: " + fontFile);
}
int baseLine = int.Parse(common[2].Substring(5));
line = reader.ReadLine();
if (line == null)
{
throw new IOException("Invalid font file: " + fontFile);
}
string[] pageLine = line.Split(SpaceToken, 4);
if (pageLine.Length < 3)
{
throw new IOException("Invalid font file: " + fontFile);
}
if (!pageLine[2].StartsWith("file="))
{
throw new IOException("Invalid font file: " + fontFile);
}
string imageFilename = null;
if (pageLine[2].EndsWith("\""))
{
imageFilename = pageLine[2].Substring(6, pageLine[2].Length - 6 - 1);
}
else
{
imageFilename = pageLine[2].Substring(5, pageLine[2].Length - 5);
}
ImagePath = Path.Combine(Path.GetDirectoryName(fontFile), imageFilename);
Descent = 0;
while (true)
{
line = reader.ReadLine();
if (line == null)
{
break;
}
if (line.StartsWith("kernings "))
{
break;
}
if (!line.StartsWith("char "))
{
continue;
}
Glyph glyph = new Glyph();
string[] tokens = line.Split(SpaceEqToken, StringSplitOptions.RemoveEmptyEntries);
int ch = int.Parse(tokens[2]);
if (ch <= char.MaxValue)
{
this[(char)ch] = glyph;
}
else
{
continue;
}
glyph.SrcX = int.Parse(tokens[4]);
glyph.SrcY = int.Parse(tokens[6]);
glyph.Width = int.Parse(tokens[8]);
glyph.Height = int.Parse(tokens[10]);
glyph.XOffset = int.Parse(tokens[12]);
glyph.YOffset = flip ? int.Parse(tokens[14]) : -(glyph.Height + int.Parse(tokens[14]));
glyph.XAdvance = int.Parse(tokens[16]);
if (glyph.Width > 0 && glyph.Height > 0)
{
Descent = Math.Min(baseLine + glyph.YOffset, Descent);
}
}
while (true)
{
line = reader.ReadLine();
if (line == null)
{
break;
}
if (!line.StartsWith("kerning "))
{
break;
}
string[] tokens = line.Split(SpaceEqToken, StringSplitOptions.RemoveEmptyEntries);
int first = int.Parse(tokens[2]);
int second = int.Parse(tokens[4]);
if (first < 0 || first > char.MaxValue || second < 0 || second > char.MaxValue)
{
continue;
}
Glyph g = this[(char)first];
int amount = int.Parse(tokens[6]);
g.SetKerning((char)second, amount);
}
Glyph spaceGlyph = this[' '];
if (spaceGlyph == null)
{
Glyph xAdvanceGlyph = this['l'];
if (xAdvanceGlyph == null)
{
xAdvanceGlyph = FirstGlyph;
}
this[' '] = spaceGlyph = new Glyph()
{
XAdvance = xAdvanceGlyph.XAdvance,
};
}
SpaceWidth = (spaceGlyph != null) ? spaceGlyph.XAdvance + spaceGlyph.Width : 1;
Glyph xGlyph = null;
for (int i = 0; i < BitmapFont.XChars.Length; i++)
{
xGlyph = this[BitmapFont.XChars[i]];
if (xGlyph != null)
{
break;
}
}
if (xGlyph == null)
{
xGlyph = FirstGlyph;
}
XHeight = xGlyph.Height;
Glyph capGlyph = null;
for (int i = 0; i < BitmapFont.CapChars.Length; i++)
{
capGlyph = this[BitmapFont.CapChars[i]];
if (capGlyph != null)
{
break;
}
}
if (capGlyph == null)
{
foreach (Glyph[] page in Glyphs)
{
if (page == null)
{
continue;
}
foreach (Glyph glyph in page)
{
if (glyph == null || glyph.Height == 0 || glyph.Width == 0)
{
continue;
}
CapHeight = Math.Min(CapHeight, glyph.Height);
}
}
}
else
{
CapHeight = capGlyph.Height;
}
Ascent = baseLine - CapHeight;
Down = -LineHeight;
if (flip)
{
Ascent = -Ascent;
Down = -Down;
}
}
}
public void ComputeGlyphAdvancesAndPositions(CharSequence str, IList <float> glyphAdvances, IList <float> glyphPositions)
{
glyphAdvances.Clear();
glyphPositions.Clear();
int index = 0;
int end = str.Length;
float width = 0;
Glyph lastGlyph = null;
BitmapFontData data = Data;
if (data.ScaleX == 1)
{
for (; index < end; index++)
{
char ch = str[index];
Glyph g = data[ch];
if (g != null)
{
if (lastGlyph != null)
{
width += lastGlyph.GetKerning(ch);
}
lastGlyph = g;
glyphAdvances.Add(g.XAdvance);
glyphPositions.Add(width);
width += g.XAdvance;
}
}
glyphAdvances.Add(0);
glyphPositions.Add(width);
}
else
{
float scaleX = data.ScaleX;
for (; index < end; index++)
{
char ch = str[index];
Glyph g = data[ch];
if (g != null)
{
if (lastGlyph != null)
{
width += lastGlyph.GetKerning(ch) * scaleX;
}
lastGlyph = g;
float xAdvance = g.XAdvance * scaleX;
glyphAdvances.Add(xAdvance);
glyphPositions.Add(width);
width += xAdvance;
}
}
glyphAdvances.Add(0);
glyphPositions.Add(width);
}
}
