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If for some reason do_text() fails to translate from Unicode to the font

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encoding, have it go through the rest of its motions with an empty string
anyway, so as to at least give a sensible empty box of the right colour.

If SetFallbackUnicodeToText() fails, switch over to using the charset
library, hence avoiding problems in do_text().

If the version of the Unicode Converter we're using doesn't understand about
interrupt-safe fallback functions, don't try to tell it we've got one.  This
prevents SetFallbackUnicodeToText() from failing on systems with old Unicode
Converters.

[originally from svn r2414]
This commit is contained in:
Ben Harris 2003-01-02 00:33:40 +00:00
parent cab553028a
commit 0416b77c7f
3 changed files with 14 additions and 10 deletions
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3
mac/mac.c
View File

@ -1,4 +1,4 @@
/* $Id: mac.c,v 1.13 2003/01/01 11:45:43 ben Exp $ */
/* $Id: mac.c,v 1.14 2003/01/02 00:33:40 ben Exp $ */
/*
* Copyright (c) 1999 Ben Harris
* All rights reserved.
@ -157,6 +157,7 @@ static void mac_startup(void) {
mac_gestalts.encvvers = 0;
else {
mac_gestalts.encvvers = (*ti)->tecVersion;
mac_gestalts.uncvattr = (*ti)->tecUnicodeConverterFeatures;
DisposeHandle((Handle)ti);
}

3
mac/mac.h
View File

@ -21,7 +21,8 @@ struct mac_gestalts {
long apprvers;
long cntlattr;
long windattr;
long encvvers;
long encvvers; /* TEC version (from TECGetInfo()) */
long uncvattr; /* Unicode Converter attributes (frem TECGetInfo()) */
};
extern struct mac_gestalts mac_gestalts;

18
mac/macterm.c
View File

@ -1,4 +1,4 @@
/* $Id: macterm.c,v 1.30 2003/01/01 19:51:13 ben Exp $ */
/* $Id: macterm.c,v 1.31 2003/01/02 00:33:40 ben Exp $ */
/*
* Copyright (c) 1999 Simon Tatham
* Copyright (c) 1999, 2002 Ben Harris
@ -212,6 +212,7 @@ static void mac_initfont(Session *s) {
Str255 macfont;
FontInfo fi;
TextEncoding enc;
OptionBits fbflags;
SetPort(s->window);
macfont[0] = sprintf((char *)&macfont[1], "%s", s->cfg.font);
@ -241,14 +242,16 @@ static void mac_initfont(Session *s) {
if (uni_to_font_fallback_upp == NULL)
uni_to_font_fallback_upp =
NewUnicodeToTextFallbackProc(&uni_to_font_fallback);
fbflags = kUnicodeFallbackCustomOnly;
if (mac_gestalts.uncvattr & kTECAddFallbackInterruptMask)
fbflags |= kUnicodeFallbackInterruptSafeMask;
if (SetFallbackUnicodeToText(s->uni_to_font,
uni_to_font_fallback_upp,
kUnicodeFallbackCustomOnly | kUnicodeFallbackInterruptSafeMask,
NULL) != noErr) {
uni_to_font_fallback_upp, fbflags, NULL) != noErr) {
DisposeUnicodeToTextInfo(&s->uni_to_font);
s->uni_to_font = NULL;
goto no_encv;
}
} else {
no_encv:
s->uni_to_font = NULL;
s->font_charset =
charset_from_macenc(FontToScript(s->fontnum),
@ -983,15 +986,14 @@ void do_text(Context ctx, int x, int y, char *text, int len,
0, NULL, NULL, NULL,
1024, &iread, &olen, mactextbuf);
if (err != noErr && err != kTECUsedFallbacksStatus)
/* XXX Should handle this more sensibly */
return;
olen = 0;
} else if (s->font_charset != CS_NONE) {
/* XXX this is bogus if wchar_t and UniChar are different sizes. */
unitextptr = (wchar_t *)unitextbuf;
olen = charset_from_unicode(&unitextptr, &len, mactextbuf, 1024,
s->font_charset, NULL, ".", 1);
} else
return;
olen = 0;
a.s = s;
a.text = mactextbuf;