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/* $Xorg: omTextPer.c,v 1.3 2000/08/17 19:45:22 cpqbld Exp $ */
/*
* Copyright 1992, 1993 by TOSHIBA Corp.
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose and without fee is hereby granted, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of TOSHIBA not be used in advertising
* or publicity pertaining to distribution of the software without specific,
* written prior permission. TOSHIBA make no representations about the
* suitability of this software for any purpose. It is provided "as is"
* without express or implied warranty.
*
* TOSHIBA DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
* ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
* TOSHIBA BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
* ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
* WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
* ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*
* Author: Katsuhisa Yano TOSHIBA Corp.
* mopi@osa.ilab.toshiba.co.jp
*/
/* $XFree86: xc/lib/X11/omTextPer.c,v 1.7 2003/11/17 22:20:12 dawes Exp $ */
#include "Xlibint.h"
#include "XomGeneric.h"
#include <stdio.h>
static Status
_XomGenericTextPerCharExtents(
XOC oc,
XOMTextType type,
XPointer text,
int length,
XRectangle *ink_buf,
XRectangle *logical_buf,
int buf_size,
int *num_chars,
XRectangle *overall_ink,
XRectangle *overall_logical)
{
XlcConv conv;
XFontStruct *font;
Bool is_xchar2b;
XPointer args[2];
XChar2b xchar2b_buf[BUFSIZ], *xchar2b_ptr;
char *xchar_ptr = NULL;
XCharStruct *def, *cs, overall;
int buf_len, left, require_num;
int logical_ascent, logical_descent;
Bool first = True;
conv = _XomInitConverter(oc, type);
if (conv == NULL)
return 0;
bzero((char *) &overall, sizeof(XCharStruct));
logical_ascent = logical_descent = require_num = *num_chars = 0;
args[0] = (XPointer) &font;
args[1] = (XPointer) &is_xchar2b;
while (length > 0) {
xchar2b_ptr = xchar2b_buf;
left = buf_len = BUFSIZ;
if (_XomConvert(oc, conv, (XPointer *) &text, &length,
(XPointer *) &xchar2b_ptr, &left, args, 2) < 0)
break;
buf_len -= left;
if (require_num) {
require_num += buf_len;
continue;
}
if (buf_size < buf_len) {
require_num = *num_chars + buf_len;
continue;
}
buf_size -= buf_len;
if (first) {
logical_ascent = font->ascent;
logical_descent = font->descent;
} else {
logical_ascent = max(logical_ascent, font->ascent);
logical_descent = max(logical_descent, font->descent);
}
if (is_xchar2b) {
CI_GET_DEFAULT_INFO_2D(font, def)
xchar2b_ptr = xchar2b_buf;
} else {
CI_GET_DEFAULT_INFO_1D(font, def)
xchar_ptr = (char *) xchar2b_buf;
}
while (buf_len-- > 0) {
if (is_xchar2b) {
CI_GET_CHAR_INFO_2D(font, xchar2b_ptr->byte1,
xchar2b_ptr->byte2, def, cs)
xchar2b_ptr++;
} else {
CI_GET_CHAR_INFO_1D(font, *xchar_ptr, def, cs)
xchar_ptr++;
}
if (cs == NULL)
continue;
ink_buf->x = overall.width + cs->lbearing;
ink_buf->y = -(cs->ascent);
ink_buf->width = cs->rbearing - cs->lbearing;
ink_buf->height = cs->ascent + cs->descent;
ink_buf++;
logical_buf->x = overall.width;
logical_buf->y = -(font->ascent);
logical_buf->width = cs->width;
logical_buf->height = font->ascent + font->descent;
logical_buf++;
if (first) {
overall = *cs;
first = False;
} else {
overall.ascent = max(overall.ascent, cs->ascent);
overall.descent = max(overall.descent, cs->descent);
overall.lbearing = min(overall.lbearing,
overall.width + cs->lbearing);
overall.rbearing = max(overall.rbearing,
overall.width + cs->rbearing);
overall.width += cs->width;
}
(*num_chars)++;
}
}
if (require_num) {
*num_chars = require_num;
return 0;
} else {
if (overall_ink) {
overall_ink->x = overall.lbearing;
overall_ink->y = -(overall.ascent);
overall_ink->width = overall.rbearing - overall.lbearing;
overall_ink->height = overall.ascent + overall.descent;
}
if (overall_logical) {
overall_logical->x = 0;
overall_logical->y = -(logical_ascent);
overall_logical->width = overall.width;
overall_logical->height = logical_ascent + logical_descent;
}
}
return 1;
}
Status
_XmbGenericTextPerCharExtents(XOC oc, _Xconst char *text, int length,
XRectangle *ink_buf, XRectangle *logical_buf,
int buf_size, int *num_chars,
XRectangle *overall_ink,
XRectangle *overall_logical)
{
return _XomGenericTextPerCharExtents(oc, XOMMultiByte, (XPointer) text,
length, ink_buf, logical_buf, buf_size,
num_chars, overall_ink,
overall_logical);
}
Status
_XwcGenericTextPerCharExtents(XOC oc, _Xconst wchar_t *text, int length,
XRectangle *ink_buf, XRectangle *logical_buf,
int buf_size, int *num_chars,
XRectangle *overall_ink,
XRectangle *overall_logical)
{
return _XomGenericTextPerCharExtents(oc, XOMWideChar, (XPointer) text,
length, ink_buf, logical_buf, buf_size,
num_chars, overall_ink,
overall_logical);
}
Status
_Xutf8GenericTextPerCharExtents(XOC oc, _Xconst char *text, int length,
XRectangle *ink_buf, XRectangle *logical_buf,
int buf_size, int *num_chars,
XRectangle *overall_ink,
XRectangle *overall_logical)
{
return _XomGenericTextPerCharExtents(oc, XOMUtf8String, (XPointer) text,
length, ink_buf, logical_buf, buf_size,
num_chars, overall_ink,
overall_logical);
}
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