On Wed, Aug 22, 2001 at 11:11:31AM +0200, Andre Poenitz wrote:
>
> Could anybody please try the attached patch and report failure or success?
It works, but the rendering is not correct.
It appears that the problem is only with the cmex font, so
a possible fix is
void MathSymbolInset::metrics(MathStyles st) const
{
size(st);
MathTextCodes code_ = code();
mathed_char_dim(code_, size_, sym_->id, ascent_, descent_, width_);
if (code_ == LM_TC_SYMEX) {
h_ = 4*descent_/5;
ascent_ += h_;
descent_ -= h_;
}
}
void MathSymbolInset::draw(Painter & pain, int x, int y) const
{
xo(x);
yo(y);
drawChar(pain, code(), size_, x, y - h_, sym_->id);
}
Some more points:
1. \sqcup should be taken from the cmsy font (char 0x74),
and \bigsqcup should be 0x46 instead of 0x47
2. If you don't have the tex math fonts installed, the result is bad:
you get an F instead of \sqcup.
So you need to add a code that checks whether the math fonts are available,
and if not, \sqcup will be displayed using ERT.
3. If the tex math fonts are available, then all symbols should be taken from
these fonts (instead of using the standard X symbol font).
Namely you should store for each symbol both its position in the X symbol font
(if it exists there) and its position in the tex math font.
