diff options
Diffstat (limited to 'libX11/modules/om/generic/omTextExt.c')
| -rw-r--r-- | libX11/modules/om/generic/omTextExt.c | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/libX11/modules/om/generic/omTextExt.c b/libX11/modules/om/generic/omTextExt.c new file mode 100644 index 000000000..4117e60f9 --- /dev/null +++ b/libX11/modules/om/generic/omTextExt.c @@ -0,0 +1,137 @@ +/* $Xorg: omTextExt.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/omTextExt.c,v 1.5 2003/04/13 19:22:22 dawes Exp $ */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif +#include "Xlibint.h" +#include "XomGeneric.h" +#include <stdio.h> + +int +_XomGenericTextExtents( + XOC oc, + XOMTextType type, + XPointer text, + int length, + XRectangle *overall_ink, + XRectangle *overall_logical) +{ + XlcConv conv; + XFontStruct *font; + Bool is_xchar2b; + XPointer args[2]; + XChar2b xchar2b_buf[BUFSIZ], *buf; + int direction, logical_ascent, logical_descent, tmp_ascent, tmp_descent; + XCharStruct overall, tmp_overall; + int buf_len, left; + Bool first = True; + + conv = _XomInitConverter(oc, type); + if (conv == NULL) + return 0; + + bzero((char *) &overall, sizeof(XCharStruct)); + logical_ascent = logical_descent = 0; + + args[0] = (XPointer) &font; + args[1] = (XPointer) &is_xchar2b; + + while (length > 0) { + buf = xchar2b_buf; + left = buf_len = BUFSIZ; + + if (_XomConvert(oc, conv, (XPointer *) &text, &length, + (XPointer *) &buf, &left, args, 2) < 0) + break; + buf_len -= left; + + if (is_xchar2b) + XTextExtents16(font, xchar2b_buf, buf_len, &direction, + &tmp_ascent, &tmp_descent, &tmp_overall); + else + XTextExtents(font, (char *) xchar2b_buf, buf_len, &direction, + &tmp_ascent, &tmp_descent, &tmp_overall); + + if (first) { /* initialize overall */ + overall = tmp_overall; + logical_ascent = tmp_ascent; + logical_descent = tmp_descent; + first = False; + } else { + overall.lbearing = min(overall.lbearing, + overall.width + tmp_overall.lbearing); + overall.rbearing = max(overall.rbearing, + overall.width + tmp_overall.rbearing); + overall.ascent = max(overall.ascent, tmp_overall.ascent); + overall.descent = max(overall.descent, tmp_overall.descent); + overall.width += tmp_overall.width; + logical_ascent = max(logical_ascent, tmp_ascent); + logical_descent = max(logical_descent, tmp_descent); + } + } + + 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 overall.width; +} + +int +_XmbGenericTextExtents(XOC oc, _Xconst char *text, int length, + XRectangle *overall_ink, XRectangle *overall_logical) +{ + return _XomGenericTextExtents(oc, XOMMultiByte, (XPointer) text, length, + overall_ink, overall_logical); +} + +int +_XwcGenericTextExtents(XOC oc, _Xconst wchar_t *text, int length, + XRectangle *overall_ink, XRectangle *overall_logical) +{ + return _XomGenericTextExtents(oc, XOMWideChar, (XPointer) text, length, + overall_ink, overall_logical); +} + +int +_Xutf8GenericTextExtents(XOC oc, _Xconst char *text, int length, + XRectangle *overall_ink, XRectangle *overall_logical) +{ + return _XomGenericTextExtents(oc, XOMUtf8String, (XPointer) text, length, + overall_ink, overall_logical); +} |