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[Emacs-diffs] Changes to emacs/src/composite.h [emacs-unicode-2]
From: |
Kenichi Handa |
Subject: |
[Emacs-diffs] Changes to emacs/src/composite.h [emacs-unicode-2] |
Date: |
Mon, 08 Sep 2003 08:48:42 -0400 |
Index: emacs/src/composite.h
diff -c /dev/null emacs/src/composite.h:1.11.6.1
*** /dev/null Mon Sep 8 08:48:42 2003
--- emacs/src/composite.h Mon Sep 8 08:48:10 2003
***************
*** 0 ****
--- 1,218 ----
+ /* Header for composite sequence handler.
+ Copyright (C) 1999 Electrotechnical Laboratory, JAPAN.
+ Licensed to the Free Software Foundation.
+ Copyright (C) 2001 Free Software Foundation, Inc.
+ Copyright (C) 2003
+ National Institute of Advanced Industrial Science and Technology (AIST)
+ Registration Number H13PRO009
+
+ This file is part of GNU Emacs.
+
+ GNU Emacs is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+
+ GNU Emacs is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with GNU Emacs; see the file COPYING. If not, write to
+ the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+ #ifndef EMACS_COMPOSITE_H
+ #define EMACS_COMPOSITE_H
+
+ /* Methods to display a sequence of components a composition. */
+ enum composition_method {
+ /* Compose relatively without alternate characters. */
+ COMPOSITION_RELATIVE,
+ /* Compose by specified composition rules. This is not used in
+ Emacs 21 but we need it to decode files saved in the older
+ versions of Emacs. */
+ COMPOSITION_WITH_RULE,
+ /* Compose relatively with alternate characters. */
+ COMPOSITION_WITH_ALTCHARS,
+ /* Compose by specified composition rules with alternate characters. */
+ COMPOSITION_WITH_RULE_ALTCHARS,
+ /* This is not a method. */
+ COMPOSITION_NO
+ };
+
+ /* Maximum number of compoments a single composition can have. */
+ #define MAX_COMPOSITION_COMPONENTS 16
+
+ /* These macros access information about a composition that
+ has `composition' property PROP. PROP is:
+ ((LENGTH . COMPONENTS) . MODIFICATION-FUNC)
+ or
+ (COMPOSITION-ID . (LENGTH COMPONENTS . MODIFICATION-FUNC))
+ They don't check validity of PROP. */
+
+ /* Temporary variable used only in the following macros. */
+ extern Lisp_Object composition_temp;
+
+ /* Return 1 iff the composition is already registered. */
+ #define COMPOSITION_REGISTERD_P(prop) INTEGERP (XCAR (prop))
+
+ /* Return ID number of the already registered composition. */
+ #define COMPOSITION_ID(prop) XINT (XCAR (prop))
+
+ /* Return length of the composition. */
+ #define COMPOSITION_LENGTH(prop) \
+ (COMPOSITION_REGISTERD_P (prop) \
+ ? XINT (XCAR (XCDR (prop))) \
+ : XINT (XCAR (XCAR (prop))))
+
+ /* Return components of the composition. */
+ #define COMPOSITION_COMPONENTS(prop) \
+ (COMPOSITION_REGISTERD_P (prop) \
+ ? XCAR (XCDR (XCDR (prop))) \
+ : XCDR (XCAR (prop)))
+
+ /* Return modification function of the composition. */
+ #define COMPOSITION_MODIFICATION_FUNC(prop) \
+ (COMPOSITION_REGISTERD_P (prop) \
+ ? XCDR (XCDR (XCDR (prop))) \
+ : CONSP (prop) ? XCDR (prop) : Qnil)
+
+ /* Return the method of composition. */
+ #define COMPOSITION_METHOD(prop) \
+ (COMPOSITION_REGISTERD_P (prop) \
+ ? composition_table[COMPOSITION_ID (prop)]->method \
+ : (composition_temp = XCDR (XCAR (prop)), \
+ (NILP (composition_temp)
\
+ ? COMPOSITION_RELATIVE \
+ : ((INTEGERP (composition_temp) || STRINGP (composition_temp)) \
+ ? COMPOSITION_WITH_ALTCHARS \
+ : COMPOSITION_WITH_RULE_ALTCHARS))))
+
+ /* Return 1 iff the composition is valid. It is valid if length of
+ the composition equals to (END - START). */
+ #define COMPOSITION_VALID_P(start, end, prop) \
+ (CONSP (prop) \
+ && (COMPOSITION_REGISTERD_P (prop) \
+ ? (COMPOSITION_ID (prop) >= 0 \
+ && COMPOSITION_ID (prop) <= n_compositions \
+ && CONSP (XCDR (prop))) \
+ : (composition_temp = XCAR (prop), \
+ (CONSP (composition_temp) \
+ && (composition_temp = XCDR (composition_temp), \
+ (NILP (composition_temp) \
+ || STRINGP (composition_temp) \
+ || VECTORP (composition_temp) \
+ || INTEGERP (composition_temp) \
+ || CONSP (composition_temp)))))) \
+ && (end - start) == COMPOSITION_LENGTH (prop))
+
+ /* Return the Nth glyph of composition specified by CMP. CMP is a
+ pointer to `struct composition'. */
+ #define COMPOSITION_GLYPH(cmp, n) \
+ XINT (XVECTOR (XVECTOR (XHASH_TABLE (composition_hash_table)
\
+ ->key_and_value) \
+ ->contents[cmp->hash_index * 2]) \
+ ->contents[cmp->method == COMPOSITION_WITH_RULE_ALTCHARS \
+ ? (n) * 2 : (n)])
+
+ /* Return the encoded composition rule to compose the Nth glyph of
+ rule-base composition specified by CMP. CMP is a pointer to
+ `struct composition'. */
+ #define COMPOSITION_RULE(cmp, n) \
+ XINT (XVECTOR (XVECTOR (XHASH_TABLE (composition_hash_table) \
+ ->key_and_value) \
+ ->contents[cmp->hash_index * 2]) \
+ ->contents[(n) * 2 - 1])
+
+ /* Decode encoded composition rule RULE_CODE into GREF (global
+ reference point code) and NREF (new reference point code). Don't
+ check RULE_CODE, always set GREF and NREF to valid values. */
+ #define COMPOSITION_DECODE_RULE(rule_code, gref, nref) \
+ do { \
+ gref = (rule_code) / 12; \
+ if (gref > 12) gref = 11; \
+ nref = (rule_code) % 12; \
+ } while (0)
+
+ /* Return encoded composition rule for the pair of global reference
+ point GREF and new reference point NREF. If arguments are invalid,
+ return -1. */
+ #define COMPOSITION_ENCODE_RULE(gref, nref) \
+ ((unsigned) (gref) < 12 && (unsigned) (nref) < 12 \
+ ? (gref) * 12 + (nref) : -1)
+
+ /* Data structure that records information about a composition
+ currently used in some buffers or strings.
+
+ When a composition is assigned an ID number (by
+ get_composition_id), this structure is allocated for the
+ composition and linked in composition_table[ID].
+
+ Identical compositions appearing at different places have the same
+ ID, and thus share the same instance of this structure. */
+
+ struct composition {
+ /* Number of glyphs of the composition components. */
+ unsigned glyph_len;
+
+ /* Width, ascent, and descent pixels of the composition. */
+ short pixel_width, ascent, descent;
+
+ /* How many columns the overall glyphs occupy on the screen. This
+ gives an approximate value for column calculation in
+ Fcurrent_column, and etc. */
+ unsigned short width;
+
+ /* Method of the composition. */
+ enum composition_method method;
+
+ /* Index to the composition hash table. */
+ int hash_index;
+
+ /* For which font we have calculated the remaining members. The
+ actual type is device dependent. */
+ void *font;
+
+ /* Pointer to an array of x-offset and y-offset (by pixels) of
+ glyphs. This points to a sufficient memory space (sizeof (int) *
+ glyph_len * 2) that is allocated when the composition is
+ registered in composition_table. X-offset and Y-offset of Nth
+ glyph are (2N)th and (2N+1)th elements respectively. */
+ short *offsets;
+ };
+
+ /* Table of pointers to the structure `composition' indexed by
+ COMPOSITION-ID. */
+ extern struct composition **composition_table;
+ /* Number of the currently registered compositions. */
+ extern int n_compositions;
+
+ /* Mask bits for CHECK_MASK arg to update_compositions.
+ For a change in the region FROM and TO, check compositions ... */
+ #define CHECK_HEAD 1 /* adjacent to FROM */
+ #define CHECK_TAIL 2 /* adjacent to TO */
+ #define CHECK_INSIDE 4 /* between FROM and TO */
+ #define CHECK_BORDER (CHECK_HEAD | CHECK_TAIL)
+ #define CHECK_ALL (CHECK_BORDER | CHECK_INSIDE)
+
+ extern Lisp_Object Qcomposition;
+ extern Lisp_Object composition_hash_table;
+ extern Lisp_Object Qauto_composed;
+ extern Lisp_Object Vauto_composition_function;
+ extern Lisp_Object Qauto_composition_function;
+
+ extern int get_composition_id P_ ((int, int, int, Lisp_Object, Lisp_Object));
+ extern int find_composition P_ ((int, int, int *, int *, Lisp_Object *,
+ Lisp_Object));
+ extern void update_compositions P_ ((int, int, int));
+ extern void make_composition_value_copy P_ ((Lisp_Object));
+ extern void compose_region P_ ((int, int, Lisp_Object, Lisp_Object,
+ Lisp_Object));
+ extern void syms_of_composite P_ ((void));
+ extern void compose_text P_ ((int, int, Lisp_Object, Lisp_Object,
+ Lisp_Object));
+ extern void compose_chars_in_text P_ ((int, int, Lisp_Object));
+
+ #endif /* not EMACS_COMPOSITE_H */
- [Emacs-diffs] Changes to emacs/src/composite.h [emacs-unicode-2],
Kenichi Handa <=