138 lines
4.4 KiB
C
138 lines
4.4 KiB
C
/* $Xorg: omTextExt.c,v 1.3 2000/08/17 19:45:22 cpqbld Exp $ */
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/*
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* Copyright 1992, 1993 by TOSHIBA Corp.
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*
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* Permission to use, copy, modify, and distribute this software and its
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* documentation for any purpose and without fee is hereby granted, provided
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* that the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of TOSHIBA not be used in advertising
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* or publicity pertaining to distribution of the software without specific,
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* written prior permission. TOSHIBA make no representations about the
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* suitability of this software for any purpose. It is provided "as is"
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* without express or implied warranty.
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*
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* TOSHIBA DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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* ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
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* TOSHIBA BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
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* ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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* WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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* ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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* SOFTWARE.
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*
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* Author: Katsuhisa Yano TOSHIBA Corp.
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* mopi@osa.ilab.toshiba.co.jp
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*/
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/* $XFree86: xc/lib/X11/omTextExt.c,v 1.5 2003/04/13 19:22:22 dawes Exp $ */
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include "Xlibint.h"
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#include "XomGeneric.h"
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#include <stdio.h>
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int
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_XomGenericTextExtents(
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XOC oc,
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XOMTextType type,
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XPointer text,
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int length,
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XRectangle *overall_ink,
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XRectangle *overall_logical)
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{
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XlcConv conv;
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XFontStruct *font;
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Bool is_xchar2b;
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XPointer args[2];
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XChar2b xchar2b_buf[BUFSIZ], *buf;
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int direction, logical_ascent, logical_descent, tmp_ascent, tmp_descent;
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XCharStruct overall, tmp_overall;
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int buf_len, left;
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Bool first = True;
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conv = _XomInitConverter(oc, type);
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if (conv == NULL)
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return 0;
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bzero((char *) &overall, sizeof(XCharStruct));
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logical_ascent = logical_descent = 0;
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args[0] = (XPointer) &font;
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args[1] = (XPointer) &is_xchar2b;
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while (length > 0) {
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buf = xchar2b_buf;
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left = buf_len = BUFSIZ;
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if (_XomConvert(oc, conv, (XPointer *) &text, &length,
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(XPointer *) &buf, &left, args, 2) < 0)
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break;
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buf_len -= left;
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if (is_xchar2b)
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XTextExtents16(font, xchar2b_buf, buf_len, &direction,
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&tmp_ascent, &tmp_descent, &tmp_overall);
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else
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XTextExtents(font, (char *) xchar2b_buf, buf_len, &direction,
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&tmp_ascent, &tmp_descent, &tmp_overall);
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if (first) { /* initialize overall */
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overall = tmp_overall;
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logical_ascent = tmp_ascent;
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logical_descent = tmp_descent;
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first = False;
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} else {
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overall.lbearing = min(overall.lbearing,
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overall.width + tmp_overall.lbearing);
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overall.rbearing = max(overall.rbearing,
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overall.width + tmp_overall.rbearing);
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overall.ascent = max(overall.ascent, tmp_overall.ascent);
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overall.descent = max(overall.descent, tmp_overall.descent);
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overall.width += tmp_overall.width;
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logical_ascent = max(logical_ascent, tmp_ascent);
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logical_descent = max(logical_descent, tmp_descent);
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}
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}
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if (overall_ink) {
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overall_ink->x = overall.lbearing;
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overall_ink->y = -(overall.ascent);
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overall_ink->width = overall.rbearing - overall.lbearing;
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overall_ink->height = overall.ascent + overall.descent;
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}
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if (overall_logical) {
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overall_logical->x = 0;
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overall_logical->y = -(logical_ascent);
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overall_logical->width = overall.width;
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overall_logical->height = logical_ascent + logical_descent;
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}
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return overall.width;
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}
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int
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_XmbGenericTextExtents(XOC oc, _Xconst char *text, int length,
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XRectangle *overall_ink, XRectangle *overall_logical)
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{
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return _XomGenericTextExtents(oc, XOMMultiByte, (XPointer) text, length,
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overall_ink, overall_logical);
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}
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int
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_XwcGenericTextExtents(XOC oc, _Xconst wchar_t *text, int length,
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XRectangle *overall_ink, XRectangle *overall_logical)
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{
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return _XomGenericTextExtents(oc, XOMWideChar, (XPointer) text, length,
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overall_ink, overall_logical);
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}
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int
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_Xutf8GenericTextExtents(XOC oc, _Xconst char *text, int length,
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XRectangle *overall_ink, XRectangle *overall_logical)
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{
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return _XomGenericTextExtents(oc, XOMUtf8String, (XPointer) text, length,
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overall_ink, overall_logical);
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}
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