[Kst] label miscellaneous.

[Duncan Hanson]

Hi All,

Has anyone else noticed that some of the label symbols don't work at all
font sizes? Many of the symbols only work for the (almost illegible) 0 size.
As far as I can tell this is a problem with Qt's rendering, and not with
Kst. We might want to make some workarounds for popular symbols, however.
E.g. I sometimes want to use capital Delta in fonts greater than 0, but the
currently used character (0x394) doesn't work. I suggest we use the
difference symbol (0x2206) as a substitute, it looks fairly similar.
Lowercase \mu is the same story, but I don't know of any similar symbols.

I think it would also be good to be able to specify a unicode character
directly in the label text. Here's a proposed patch, which introduces a new
\char{} command. E.g. \char{0x2206} or \char{8710} would display the
difference symbol.

Duncan.
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