public int GetGlyphKernAdvance(int codepoint1, int codepoint2)
{
var key = KerningKey(codepoint1, codepoint2);
int result = 0;
_kernings.TryGetValue(key, out result);
return(result);
}
public DynamicSpriteFont GetFont(int fontSize)
{
DynamicSpriteFont result;
if (_fonts.TryGetValue(fontSize, out result))
{
return(result);
}
result = new DynamicSpriteFont(this, fontSize);
_fonts[fontSize] = result;
return(result);
}
public int GetGlyphKernAdvance(int glyph1, int glyph2)
{
var key = ((glyph1 << 16) | (glyph1 >> 16)) ^ glyph2;
int result;
if (_kernings.TryGetValue(key, out result))
{
return(result);
}
result = stbtt_GetGlyphKernAdvance(_font, glyph1, glyph2);
_kernings[key] = result;
return(result);
}
GlyphCollection GetGlyphsCollection(int size)
{
GlyphCollection result;
if (_glyphs.TryGetValue(size, out result))
{
return(result);
}
result = new GlyphCollection();
_glyphs[size] = result;
return(result);
}
public int GetGlyphKernAdvance(int glyph1, int glyph2, int fontSize)
{
var scale = CalculateScale(fontSize);
var key = ((glyph1 << 16) | (glyph1 >> 16)) ^ glyph2;
int result;
if (!_kernings.TryGetValue(key, out result))
{
result = stbtt_GetGlyphKernAdvance(_font, glyph1, glyph2);
_kernings[key] = result;
}
return((int)(result * scale));
}
private DynamicFontGlyph GetGlyphWithoutBitmap(int codepoint)
{
DynamicFontGlyph glyph;
if (Glyphs.TryGetValue(codepoint, out glyph))
{
return(glyph);
}
int fontSourceIndex;
var g = FontSystem.GetCodepointIndex(codepoint, out fontSourceIndex);
if (g == null)
{
Glyphs[codepoint] = null;
return(null);
}
var fontSize = (int)(FontSize * FontSystem.FontResolutionFactor);
var font = FontSystem.FontSources[fontSourceIndex];
int advance, x0, y0, x1, y1;
font.GetGlyphMetrics(g.Value, fontSize, out advance, out x0, out y0, out x1, out y1);
var pad = Math.Max(DynamicFontGlyph.PadFromBlur(FontSystem.BlurAmount), DynamicFontGlyph.PadFromBlur(FontSystem.StrokeAmount));
var gw = (x1 - x0) + pad * 2;
var gh = (y1 - y0) + pad * 2;
var offset = DynamicFontGlyph.PadFromBlur(FontSystem.BlurAmount);
glyph = new DynamicFontGlyph
{
Codepoint = codepoint,
Id = g.Value,
Size = fontSize,
FontSourceIndex = fontSourceIndex,
Bounds = new Rectangle(0, 0, gw, gh),
XAdvance = advance,
XOffset = x0 - offset,
YOffset = y0 - offset
};
Glyphs[codepoint] = glyph;
return(glyph);
}
private DynamicFontGlyph GetGlyphWithoutBitmap(int codepoint)
{
DynamicFontGlyph glyph = null;
if (_glyphs.TryGetValue(codepoint, out glyph))
{
return(glyph);
}
IFontSource font;
var g = FontSystem.GetCodepointIndex(codepoint, out font);
if (g == null)
{
return(null);
}
int advance = 0, x0 = 0, y0 = 0, x1 = 0, y1 = 0;
font.GetGlyphMetrics(g.Value, FontSize, out advance, out x0, out y0, out x1, out y1);
var pad = Math.Max(DynamicFontGlyph.PadFromBlur(FontSystem.BlurAmount), DynamicFontGlyph.PadFromBlur(FontSystem.StrokeAmount));
var gw = x1 - x0 + pad * 2;
var gh = y1 - y0 + pad * 2;
var offset = DynamicFontGlyph.PadFromBlur(FontSystem.BlurAmount);
glyph = new DynamicFontGlyph
{
Codepoint = codepoint,
Id = g.Value,
Size = FontSize,
Font = font,
Bounds = new Rectangle(0, 0, gw, gh),
XAdvance = advance,
XOffset = x0 - offset,
YOffset = y0 - offset
};
_glyphs[codepoint] = glyph;
return(glyph);
}
public DynamicSpriteFont GetFont(int fontSize)
{
DynamicSpriteFont result;
if (_fonts.TryGetValue(fontSize, out result))
{
return(result);
}
if (_fontSources.Count == 0)
{
throw new Exception("Could not create a font without a single font source. Use AddFont to add at least one font source.");
}
var fontSource = _fontSources[0];
int ascent, descent, lineHeight;
fontSource.GetMetricsForSize(fontSize, out ascent, out descent, out lineHeight);
result = new DynamicSpriteFont(this, fontSize, lineHeight);
_fonts[fontSize] = result;
return(result);
}
internal override void GetQuad(FontGlyph glyph, FontGlyph prevGlyph, ref float x, float y, ref FontGlyphSquad q)
{
if (prevGlyph != null)
{
var adv = 0;
var dynamicGlyph = (DynamicFontGlyph)glyph;
var dynamicPrevGlyph = (DynamicFontGlyph)prevGlyph;
if (FontSystem.UseKernings && dynamicGlyph.FontSourceIndex == dynamicPrevGlyph.FontSourceIndex)
{
var key = GetKerningsKey(prevGlyph.Id, dynamicGlyph.Id);
if (!Kernings.TryGetValue(key, out adv))
{
var fontSource = FontSystem.FontSources[dynamicGlyph.FontSourceIndex];
adv = fontSource.GetGlyphKernAdvance(prevGlyph.Id, dynamicGlyph.Id, dynamicGlyph.Size);
Kernings[key] = adv;
}
}
x += adv + FontSystem.CharacterSpacing;
}
base.GetQuad(glyph, prevGlyph, ref x, y, ref q);
}