diff options
Diffstat (limited to 'libX11/modules/om/generic/omTextPer.c')
| -rw-r--r-- | libX11/modules/om/generic/omTextPer.c | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/libX11/modules/om/generic/omTextPer.c b/libX11/modules/om/generic/omTextPer.c new file mode 100644 index 000000000..17a186571 --- /dev/null +++ b/libX11/modules/om/generic/omTextPer.c @@ -0,0 +1,204 @@ +/* $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 1.6 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> + +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); +} |