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update posn_in_string loop to be similar to nsfont_split

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This commit is contained in:
Chris Young 2013-03-24 11:27:26 +00:00
parent e678df267e
commit f70e58b4a1
1 changed files with 20 additions and 40 deletions
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60
amiga/font.c
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@ -206,76 +206,56 @@ bool nsfont_position_in_string(const plot_font_style_t *fstyle,
uint32 tx=0,i=0;
size_t len, utf8len = 0;
uint8 *utf8;
int utf8_pos = 0;
uint32 co = 0;
int utf16charlen;
ULONG emwidth = (ULONG)NSA_FONT_EMWIDTH(fstyle->size);
int32 tempx;
len = utf8_bounded_length(string, length);
if(utf8_to_enc(string,"UTF-16",length,(char **)&utf16) != UTF8_CONVERT_OK) return false;
outf16 = utf16;
if(!(ofont = ami_open_outline_font(fstyle, 0))) return false;
*char_offset = length;
*actual_x = 0;
for(i=0;i<len;i++)
{
while (utf8_pos < length) {
if ((*utf16 < 0xD800) || (0xDFFF < *utf16))
utf16charlen = 1;
else
utf16charlen = 2;
utf8len = utf8_char_byte_length(string);
utf16next = &utf16[utf16charlen];
tempx = ami_font_width_glyph(ofont, utf16, utf16next, emwidth);
if(tempx == 0)
{
if(ufont == NULL)
{
if (tempx == 0) {
if (ufont == NULL)
ufont = ami_open_outline_font(fstyle, *utf16);
}
if(ufont)
{
tempx = ami_font_width_glyph(ufont, utf16, utf16next, emwidth);
}
/*
if(tempx == 0)
{
tempx = ami_font_width_glyph(ofont, NULL, 0xfffd, utf16next, emwidth);
}
*/
}
if(x < (tx + tempx))
{
*actual_x = tx;
i = len+1;
}
else
{
co += utf8len;
if (ufont)
tempx = ami_font_width_glyph(ufont, utf16,
utf16next, emwidth);
}
tx += tempx;
string += utf8len;
if(tx < x) {
*actual_x = tx;
} else {
*char_offset = utf8_pos;
free(outf16);
return true;
}
utf16 += utf16charlen;
utf8_pos = utf8_next(string, length, utf8_pos);
}
if(co >= (length))
{
*actual_x = tx;
co = length;
}
*char_offset = co;
*actual_x = tx;
*char_offset = length;
free(outf16);
return true;
}