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Diffstat (limited to 'libX11/modules/om/generic/omTextEsc.c')
-rw-r--r--libX11/modules/om/generic/omTextEsc.c302
1 files changed, 302 insertions, 0 deletions
diff --git a/libX11/modules/om/generic/omTextEsc.c b/libX11/modules/om/generic/omTextEsc.c
new file mode 100644
index 000000000..03b76d9f1
--- /dev/null
+++ b/libX11/modules/om/generic/omTextEsc.c
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+/* $Xorg: omTextEsc.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/omTextEsc.c,v 1.6 2003/04/13 19:22:22 dawes Exp $ */
+/*
+ * Copyright 1995 by FUJITSU LIMITED
+ * This is source code modified by FUJITSU LIMITED under the Joint
+ * Development Agreement for the CDE/Motif PST.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include "Xlibint.h"
+#include "XomGeneric.h"
+#include <stdio.h>
+
+/* For VW/UDC start */
+
+#define VMAP 0
+#define VROTATE 1
+#define FONTSCOPE 2
+
+static int
+is_rotate(
+ XOC oc,
+ XFontStruct *font)
+{
+ XOCGenericPart *gen = XOC_GENERIC(oc);
+ FontSet font_set;
+ VRotate vrotate;
+ int font_set_count;
+ int vrotate_num;
+
+ font_set = gen->font_set;
+ font_set_count = gen->font_set_num;
+ for( ; font_set_count-- ; font_set++) {
+ if((font_set->vrotate_num > 0) && (font_set->vrotate != NULL)) {
+ vrotate = font_set->vrotate;
+ vrotate_num = font_set->vrotate_num;
+ for( ; vrotate_num-- ; vrotate++)
+ if(vrotate->font == font)
+ return True;
+ }
+ }
+ return False;
+}
+
+static int
+is_codemap(
+ XOC oc,
+ XFontStruct *font)
+{
+ XOCGenericPart *gen = XOC_GENERIC(oc);
+ FontSet font_set;
+ FontData vmap;
+ int font_set_count;
+ int vmap_num;
+
+ font_set = gen->font_set;
+ font_set_count = gen->font_set_num;
+ for( ; font_set_count-- ; font_set++) {
+ if(font_set->vmap_num > 0) {
+ vmap = font_set->vmap;
+ vmap_num = font_set->vmap_num;
+ for( ; vmap_num-- ; vmap++)
+ if(vmap->font == font)
+ return True;
+ }
+ }
+ return False;
+}
+
+static int
+escapement_vertical(
+ XOC oc,
+ XFontStruct *font,
+ Bool is_xchar2b,
+ XPointer text,
+ int length)
+{
+ XChar2b *buf2b;
+ char *buf;
+ int escapement = 0, i;
+
+ if(is_xchar2b) {
+ for(i = 0, buf2b = (XChar2b *) text ; i < length ; i++, buf2b++) {
+ if(is_rotate(oc, font) == True) {
+ escapement += _XTextHeight16(font, buf2b, 1);
+ } else {
+ escapement += (int) (font->max_bounds.ascent +
+ font->max_bounds.descent);
+ }
+ }
+ } else {
+ for(i = 0, buf = (char *)text ; i < length && *buf ; i++, buf++) {
+ if(is_rotate(oc, font) == True) {
+ escapement += _XTextHeight(font, buf, 1);
+ } else {
+ escapement += (int) (font->max_bounds.ascent +
+ font->max_bounds.descent);
+ }
+ }
+ }
+ return escapement;
+}
+
+
+static int
+TextWidthWithFontSet(
+ FontSet font_set,
+ XOC oc,
+ XPointer text,
+ int length)
+{
+ FontData fd;
+ XFontStruct *font;
+ unsigned char *ptr = (unsigned char *)text;
+ Bool is_xchar2b;
+ int ptr_len = length;
+ int escapement = 0, char_len = 0;
+
+ if(font_set == (FontSet) NULL)
+ return escapement;
+
+ is_xchar2b = font_set->is_xchar2b;
+
+ while(length > 0) {
+ fd = _XomGetFontDataFromFontSet(font_set, ptr, length, &ptr_len,
+ is_xchar2b, FONTSCOPE);
+ if(ptr_len <= 0)
+ break;
+
+ /*
+ * First, see if the "Best Match" font for the FontSet was set.
+ * If it was, use that font. If it was not set, then use the
+ * font defined by font_set->font_data[0] (which is what
+ * _XomGetFontDataFromFontSet() always seems to return for
+ * non-VW text). Note that given the new algorithm in
+ * parse_fontname() and parse_fontdata(), fs->font will
+ * *always* contain good data. We should probably remove
+ * the check for "fd->font", but we won't :-) -- jjw/pma (HP)
+ *
+ * Above comment and way this is done propagated from omText.c
+ * Note that fd->font is junk so using the result of the
+ * above call /needs/ to be ignored.
+ *
+ * Owen Taylor <otaylor@redhat.com> 12 Jul 2000
+ *
+ */
+
+ if(fd == (FontData) NULL ||
+ (font = font_set->font) == (XFontStruct *) NULL) {
+
+ if((font = fd->font) == (XFontStruct *) NULL)
+ break;
+ }
+
+ switch(oc->core.orientation) {
+ case XOMOrientation_LTR_TTB:
+ case XOMOrientation_RTL_TTB:
+ if (is_xchar2b) {
+ char_len = ptr_len / sizeof(XChar2b);
+ escapement += XTextWidth16(font, (XChar2b *)ptr, char_len);
+ } else {
+ char_len = ptr_len;
+ escapement += XTextWidth(font, (char *)ptr, char_len);
+ }
+ break;
+
+ case XOMOrientation_TTB_LTR:
+ case XOMOrientation_TTB_RTL:
+ if(font_set->font == font) {
+ fd = _XomGetFontDataFromFontSet(font_set, ptr, length, &ptr_len,
+ is_xchar2b, VMAP);
+ if(ptr_len <= 0)
+ break;
+ if(fd == (FontData) NULL ||
+ (font = fd->font) == (XFontStruct *) NULL)
+ break;
+
+ if(is_codemap(oc, fd->font) == False) {
+ fd = _XomGetFontDataFromFontSet(font_set, ptr, length,
+ &ptr_len, is_xchar2b,
+ VROTATE);
+ if(ptr_len <= 0)
+ break;
+ if(fd == (FontData) NULL ||
+ (font = fd->font) == (XFontStruct *) NULL)
+ break;
+ }
+ }
+
+ if(is_xchar2b)
+ char_len = ptr_len / sizeof(XChar2b);
+ else
+ char_len = ptr_len;
+ escapement += escapement_vertical(oc, font, is_xchar2b,
+ (XPointer) ptr, char_len);
+ break;
+
+ case XOMOrientation_Context:
+ /* not used? */
+ break;
+ }
+
+ if(char_len <= 0)
+ break;
+
+ length -= char_len;
+ ptr += ptr_len;
+ }
+
+ return escapement;
+}
+
+/* For VW/UDC end */
+
+static int
+_XomGenericTextEscapement(
+ XOC oc,
+ XOMTextType type,
+ XPointer text,
+ int length)
+{
+ XlcConv conv;
+ XFontStruct *font;
+ Bool is_xchar2b;
+/* VW/UDC */
+ XPointer args[3];
+ FontSet font_set;
+/* VW/UDC */
+ XChar2b xchar2b_buf[BUFSIZ], *buf;
+ int escapement = 0;
+ int buf_len = 0, left = 0;
+
+ conv = _XomInitConverter(oc, type);
+ if (conv == NULL)
+ return escapement;
+
+ args[0] = (XPointer) &font;
+ args[1] = (XPointer) &is_xchar2b;
+ args[2] = (XPointer) &font_set;
+
+ while (length > 0) {
+ buf = xchar2b_buf;
+ left = buf_len = BUFSIZ;
+
+ if (_XomConvert(oc, conv, (XPointer *) &text, &length,
+ (XPointer *) &buf, &left, args, 3) < 0)
+ break;
+ buf_len -= left;
+
+/* VW/UDC */
+ escapement += TextWidthWithFontSet(font_set, oc,
+ (XPointer) xchar2b_buf, buf_len);
+/* VW/UDC */
+ }
+
+ return escapement;
+}
+
+int
+_XmbGenericTextEscapement(XOC oc, _Xconst char *text, int length)
+{
+ return _XomGenericTextEscapement(oc, XOMMultiByte, (XPointer) text, length);
+}
+
+int
+_XwcGenericTextEscapement(XOC oc, _Xconst wchar_t *text, int length)
+{
+ return _XomGenericTextEscapement(oc, XOMWideChar, (XPointer) text, length);
+}
+
+int
+_Xutf8GenericTextEscapement(XOC oc, _Xconst char *text, int length)
+{
+ return _XomGenericTextEscapement(oc, XOMUtf8String, (XPointer) text,
+ length);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-07 23:32:30 +0000