[iyonix-support] Re: FontManager and ROMFonts
- From: Martin Wuerthner <lists@xxxxxxxxxxxxxxx>
- To: iyonix-support@xxxxxxxxxxxxx
- Date: Sat, 02 Jul 2011 11:49:36 +0200
In message <51eb79f563Paul@xxxxxxxx>
Paul Sprangers <Paul@xxxxxxxx> wrote:
> In article <6a8274eb51.martin@xxxxxxxxxxxxxxxxxxx>,
> Martin Wuerthner <lists@xxxxxxxxxxxxxxx> wrote:
>> You can check by simply using some UCS functionality and checking for
>> returned errors.
> I hardly dare to ask, but how should I do that, for example?
Just open a font with UTF8 encoding and try to do something that
requires that encoding to be understood. For instance:
UCSFontManagerPresent = FALSE
SYS "XFont_FindFont",,"\FHomerton.Medium\EUTF8",192,192,0,0 TO H%;F%
IF (F% AND 1) = 0 THEN
REM We could open a font using the UTF8 encoding. That means it is
REM likely that the FontManager supports Unicode, but just to be
REM sure, try to actually use it. Find the "fi" ligature.
SYS "XFont_EnumerateCharacters",H%,&FB01 TO ,next%,code%;F%
REM Now code% is the internal character code of the given character,
REM -1 means it is unmapped. We expect it to be mapped.
IF (F% AND 1) = 0 AND code% <> -1 THEN
UCSFontManagerPresent = TRUE
ENDIF
SYS "XFont_LoseFont",H%
ENDIF
In c.s.a.misc Rick Murray suggested there might be a SWI that only the
UCS FontManager has, and there is one, it is the "EnumerateCharacters"
SWI used above. So, a very simple test would be to test for the
presence of that SWI using OS_SWINumberFromString.
Martin
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