int justify_line(Raster *screen,
Vfont *font,
char *linebuf,
int x,int y,int w,
Pixel color,
Text_mode tmode,
Pixel color2,int just, SHORT *pcharx, int charx_idx)
/* returns width of text, If pcharx != NULL it loads it with
* the start x of the char indexed by charx_idx in the line.
* ie: if charx_idx == 0 it will return the x position of the
* first character, if char_idx is 2 the 3rd character if >= last char
* x position of the last char ( passing in -1 will give last char without
* fail) if there are no chars on the line the position will be the
* position of the first-last char */
{
int textwid;
int wleft;
unsigned int ccount;
char *last;
char savelast;
if(0 == (ccount = strlen(linebuf)))
goto no_text;
last = linebuf + ccount - 1;
if((savelast = last[0]) == ' ')
{
if(ccount > 1
&& last[-1] != ' '
&& last[-1] != '\t')
{
--ccount;
}
}
else if(last[0] == '\n')
--ccount;
linebuf[ccount] = 0;
if(0 == (textwid = fnstring_width(font, linebuf, ccount)))
goto no_text;
wleft = w - textwid;
switch(just)
{
case JUST_FILL:
{
textwid = just_fill(screen, font, linebuf, ccount, x, y, color,
tmode, color2, wleft, charx_idx);
if(pcharx)
{
/* line truncated and want last char position */
if (*last == '\0' && ((unsigned int)charx_idx >= ccount))
*pcharx = x + w;
else
*pcharx = textwid;
}
textwid = w; /* filled up */
goto done;
}
case JUST_LEFT:
default:
break;
case JUST_RIGHT:
x += wleft;
break;
case JUST_CENTER:
x += wleft/2;
break;
}
if(screen)
gftext(screen, font, linebuf, x, y, color, tmode, color2);
if(pcharx)
{
if (*last == '\0')
{
*last = ' ';
++ccount;
}
if(charx_idx)
{
if ((unsigned int)charx_idx > ccount)
charx_idx = ccount;
x += fnstring_width(font,linebuf,charx_idx) + font->spacing;
}
*pcharx = x;
}
done:
*last = savelast;
return(textwid);
no_text:
if(pcharx)
{
switch(just)
{
case JUST_RIGHT:
x += w - fchar_spacing(font," ");
break;
case JUST_CENTER:
x += ((w - fchar_spacing(font," "))>>1);
break;
default:
break;
}
*pcharx = x;
}
return(0);
}
int pscmGetFontStringWidth(struct pscmGfx *pscm, MgFont *font, char *string)
/* How wide is a string? */
{
return fnstring_width(font, (unsigned char *)string, strlen(string));
}
