private void InitFont(float scaleFactor)
{
try {
System.Diagnostics.Stopwatch sw = System.Diagnostics.Stopwatch.StartNew();
ScaleFactor = scaleFactor;
YOffsetScaled = YOffset * scaleFactor;
// Reset everything
Clear();
Font = new Face(FontManager.Library, FilePath);
// Go on
float size = Size.Scale(ScaleFactor);
Fixed26Dot6 sz = new Fixed26Dot6(size / 64);
Font.SetCharSize(sz, sz, 72, 72);
int pixelSize = (size * 1.3334).Ceil();
Font.SetPixelSizes((uint)pixelSize, (uint)pixelSize);
GlyphCount = Font.GlyphCount;
int glyphCount = GlyphCount;
Monospace = Font.FaceFlags.HasFlag(FaceFlags.FixedWidth);
string tmpName = Font.GetPostscriptName();
if (!String.IsNullOrEmpty(tmpName))
{
Name = tmpName;
}
// We support 4 different glyph loading strategies:
//
// (1) All: all glyphs loaded at once on start
// (2) Filtered: all filtered glyphs loaded at once on start
// (3) OnDemand: no glyphs loaded at start, all glyphs on demand
if (OnDemand)
{
// Startegy (3)
GlyphCount = 0;
}
else if (Filter > GlyphFilterFlags.OnDemand)
{
// Startegy (2)
// If we have a Filter set, let's count the number of valid glyphs
// to minimize graphics memory.
uint glyphindex;
uint cc = Font.GetFirstChar(out glyphindex);
int count = 0;
while (glyphindex > 0)
{
char c = (char)cc;
if (Filter.IsValid(c))
{
count++;
}
cc = Font.GetNextChar(cc, out glyphindex);
}
GlyphCount = count;
}
else
{
// Strategy (1), loading the entire font
}
m_Textures = new int[Math.Max(32, GlyphCount)];
CharMap = new ThreadSafeDictionary <char, GlyphInfo>(Math.Max(31, GlyphCount));
if (!OnDemand)
{
// Strategy (1) + (2): Load all or filtered glyphs
m_ListBase = GL.GenLists(GlyphCount);
GL.GenTextures(GlyphCount, m_Textures);
uint glyphindex;
uint cc = Font.GetFirstChar(out glyphindex);
while (glyphindex > 0)
{
char c = (char)cc;
if (!CharMap.ContainsKey(c) && Filter.IsValid(c))
{
try {
CharMap.Add(c, CompileCharacter(Font, glyphindex, c));
} catch (Exception ex) {
ex.LogWarning();
}
}
cc = Font.GetNextChar(cc, out glyphindex);
}
CharMap.TryGetValue(SpecialCharacters.Ellipsis, out m_EllipsisGlyphIndex);
}
else
{
try {
GetGlyphIndex(SpecialCharacters.Ellipsis, out m_EllipsisGlyphIndex);
} catch (Exception ex) {
ex.LogError();
}
}
//if (Height <= 1)
//Height = pixelSize.NextPowerOf2();
//Height = pixelSize * 1.33335f;
Height = pixelSize;
float fscale = Height / Font.Height * 1.33334f;
//float fscale = Height / Font.Height * 0.776f;
Ascender = Font.Ascender * fscale;
Descender = Font.Descender * fscale;
//HalfHeight = Height / 2;
Height = (Ascender).Ceil();
HalfHeight = (int)(Height / 2);
//LineHeight = Height * 1.42f * LineSpacing;
LineHeight = (int)((Height * 1.42f * LineSpacing) + 0.5f);
//TextBoxHeight = ((Height * 2f) + (ScaleFactor * 2f)).Ceil();
//TextBoxHeight = (int)(Height * 1.85f + 0.5f);
TextBoxHeight = (int)(Height * 1.85f + 2);
CaptionHeight = (int)(Height * 1.55 + 2);
YOffsetScaled = (YOffset * ScaleFactor) - HalfHeight;
if (OnDemand)
{
Count.LogInformation("Font {0} ({1}), {2}/{3} glyphs pre-loaded in {4} ms, more glyphs are loaded on demand.", Name, Size, Count, glyphCount, sw.ElapsedMilliseconds);
}
else
{
Count.LogInformation("Font {0} ({1}), {2}/{3} glyphs loaded in {4} ms.", Name, Size, Count, glyphCount, sw.ElapsedMilliseconds);
}
} catch (Exception ex) {
ex.LogError();
} finally {
if (!OnDemand && Font != null)
{
Font.Dispose();
Font = null;
}
}
}
