public int GetKerning(char previous, char current)
{
int result;
var kerning = new Kerning(previous, current, 0);
if (!Kernings.TryGetValue(kerning, out result))
{
result = 0;
}
return(result);
}
public Vector2 MeasureText(string text, int start, int end)
#endif
{
Vector2 size = Vector2.Zero;
if (start >= end)
{
return(size);
}
if (end > text.Length)
{
end = text.Length;
}
if (start < 0)
{
start = 0;
}
float x = 0;
float y = 0;
int key = 0;
for (int i = start; i < end; i++)
{
char c = text[i];
switch (c)
{
case '\r':
{
key |= c;
continue;
}
case '\n':
{
key = 0;
x = 0;
y += LineSpacing;
}
break;
default:
{
if (!_glyphs.TryGetValue(c, out Glyph glyph))
{
if (IgnoreUnknownCharacters)
{
continue;
}
glyph = _defaultGlyph;
}
key |= c;
float dx = glyph.OffsetX;
if (Kernings.TryGetValue(key, out Kerning kerning))
{
dx += kerning.Offset;
}
float nextX = x + glyph.XAdvance + SpacingX;
float h = y + LineSpacing;
if (nextX + dx > size.X)
{
size.X = nextX;
}
if (h > size.Y)
{
size.Y = h;
}
x = nextX;
}
break;
}
key <<= 16;
}
return(size);
}
public int HitTest(string text, int start, int end, float xPos, float yPos)
#endif
{
if (start >= end)
{
return(end);
}
if (end > text.Length)
{
end = text.Length;
}
if (start < 0)
{
start = 0;
}
if (xPos < 0)
{
return(-1);
}
if (yPos < 0)
{
return(-1);
}
float x = 0;
float y = 0;
int key = 0;
for (int i = start; i < end; i++)
{
char c = text[i];
switch (c)
{
case '\r':
{
key |= c;
continue;
}
case '\n':
{
key = 0;
x = 0;
y += LineSpacing;
}
break;
default:
{
if (!_glyphs.TryGetValue(c, out Glyph glyph))
{
if (IgnoreUnknownCharacters)
{
continue;
}
glyph = _defaultGlyph;
}
key |= c;
float dx = glyph.OffsetX;
if (Kernings.TryGetValue(key, out Kerning kerning))
{
dx += kerning.Offset;
}
float nextX = x + glyph.XAdvance + SpacingX;
float h = y + LineSpacing;
if (xPos >= x && xPos <= nextX + dx && yPos <= h && yPos >= y)
{
if (xPos < (x + nextX + dx) * 0.5f)
{
return(i);
}
return(i + 1);
}
x = nextX;
}
break;
}
key <<= 16;
}
return(end);
}
