Re: Multicolumn characters and Panels

[Thomas Dickey]

On Sat, Feb 17, 2007 at 05:24:21AM -0500, Sadrul H Chowdhury wrote:
> Hi. I came across this bug when using gaim-text. It's kind of difficult to
> explain. So I have included a sample test-program:

good...
 
> I tried to come up with a patch, and I got:
> --- ncurses/base/lib_refresh.c
> +++ ncurses/base/lib_refresh.c
> @@ -150,7 +150,19 @@
>            if (last > limit_x)
>                last = limit_x;
> 
> -           for (j = oline->firstchar, n = j + begx; j <= last; j++, n++) {
> +           j = oline->firstchar;
> +           n = j + begx;
> +           if (j <= last && n && isWidecExt(nline->text[n-1])) {
> +               /* It's a multicolumn character. Replace with a space. */
> +#if 0
> +               NCURSES_CH_T blank = NewChar(BLANK_TEXT);
> +               nline->text[n-1] = blank;
> +#else
> +               nline->text[n-1].chars[0] = ' ';
> +#endif
> +               CHANGED_CELL(nline, n-1);
> +           }
> +           for (; j <= last; j++, n++) {
>                if (!CharEq(oline->text[j], nline->text[n])) {
>                    nline->text[n] = oline->text[j];
>                    CHANGED_CELL(nline, n);
> 
> It did seem to work (by replacing the wide-character by a space to make sure
> it doesn't get displayed at all). However, if I bring up pone again (using
> top_panel), the wide-character remains invisible. So I think this probably
> is not the best fix. Is there any other fix I should try?

I'm not sure (will try to see).

thanks

-- 
Thomas E. Dickey <address@hidden>
http://invisible-island.net
ftp://invisible-island.net

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