JSize
JXFontManager::GetLineHeight
(
const JFontID fontID,
const JSize size,
const JFontStyle& style,
JCoordinate* ascent,
JCoordinate* descent
)
const
{
FontInfo info = itsFontList->GetElement(fontID);
if (info.xfont.type == kStdType)
{
*ascent = info.xfont.xfstd->ascent;
*descent = info.xfont.xfstd->descent;
}
else
{
assert( info.xfont.type == kTrueType );
if (info.ascent == 0)
{
XGlyphInfo g;
XftTextExtents8(*itsDisplay, info.xfont.xftrue, (FcChar8*) "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789|_", 64, &g);
info.ascent = g.y + 1 + size/10;
info.descent = g.height - g.y;
itsFontList->SetElement(fontID, info);
}
*ascent = info.ascent;
*descent = info.descent;
}
const JCoordinate underlineHeight = 2 * GetUnderlineThickness(size) * style.underlineCount;
if (*descent < underlineHeight)
{
*descent = underlineHeight;
}
return (*ascent + *descent);
}
JSize
JXFontManager::GetLineHeight
(
const JFontID fontID,
const JSize size,
const JFontStyle& style,
JCoordinate* ascent,
JCoordinate* descent
)
const
{
#ifdef _J_USE_XFT
XftFont* xftfont = GetXftFont(fontID);
*ascent = xftfont->ascent;
*descent = xftfont->descent;
#else
XFontStruct* xfont = GetXFontInfo(fontID);
*ascent = xfont->ascent;
*descent = xfont->descent;
#endif
// Look for underline types
if (style.underlineType == JFontStyle::plain_Underline)
{
const JSize underlineThickness = GetUnderlineThickness(size);
if (((JSize) *descent) < 2 * underlineThickness * style.underlineCount)
{
*descent = 2 * underlineThickness * style.underlineCount;
}
}
else
{
// Special underline types always have height 3
if (((JSize) *descent) < 3)
*descent = 3;
}
return (*ascent + *descent);
}
