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-rw-r--r--libX11/modules/om/generic/omTextPer.c204
1 files changed, 204 insertions, 0 deletions
diff --git a/libX11/modules/om/generic/omTextPer.c b/libX11/modules/om/generic/omTextPer.c
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+++ b/libX11/modules/om/generic/omTextPer.c
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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 1.6 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);
+}