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- /* Copyright (C) 1989, 1992 Aladdin Enterprises. All rights reserved.
- Distributed by Free Software Foundation, Inc.
-
- This file is part of Ghostscript.
-
- Ghostscript is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY. No author or distributor accepts responsibility
- to anyone for the consequences of using it or for whether it serves any
- particular purpose or works at all, unless he says so in writing. Refer
- to the Ghostscript General Public License for full details.
-
- Everyone is granted permission to copy, modify and redistribute
- Ghostscript, but only under the conditions described in the Ghostscript
- General Public License. A copy of this license is supposed to have been
- given to you along with Ghostscript so you can know your rights and
- responsibilities. It should be in a file named COPYING. Among other
- things, the copyright notice and this notice must be preserved on all
- copies. */
-
- /* gxchar.h */
- /* Internal character definition for Ghostscript library */
- /* Requires gsmatrix.h, gxfixed.h, gzdevice.h */
- #include "gschar.h"
-
- /* An entry for a (font,matrix) pair in the character cache. */
- /* Either font == 0 and UniqueID != -1, or font != 0 and UniqueID == -1. */
- typedef struct cached_fm_pair_s cached_fm_pair;
- struct cached_fm_pair_s {
- struct gs_font_s *font; /* base font */
- long UniqueID; /* font UniqueID */
- const char * /* void * */ encoding; /* encoding vector (opaque) */
- float mxx, mxy, myx, myy; /* transformation */
- int num_chars; /* # of cached chars with this */
- /* f/m pair */
- };
- /* If font == 0 and UniqueID == -1, this is a free entry. */
- #define fm_pair_is_free(pair) ((pair)->font == 0 && (pair)->UniqueID == -1)
- #define fm_pair_set_free(pair) ((pair)->font = 0, (pair)->UniqueID = -1)
-
- /* The type of cached characters is opaque. */
- typedef struct cached_char_s cached_char;
- extern const uint cached_char_sizeof;
-
- /* An enumeration object for string display. */
- typedef enum {
- sws_none,
- sws_cache, /* setcachedevice */
- sws_no_cache /* setcharwidth */
- } show_width_status;
- struct gs_show_enum_s {
- /* Following are set at creation time */
- gs_state *pgs;
- int level; /* save the level of pgs */
- const byte *str; /* char may be signed! */
- uint size;
- float wcx, wcy; /* for widthshow */
- char_code wchr; /* ditto */
- float ax, ay; /* for ashow */
- int add; /* true if a[width]show */
- int do_kern; /* true if kshow */
- int slow_show; /* [a][width]show or kshow */
- int charpath_flag; /* 0 for show, 1 for false */
- /* charpath, 2 for true charpath */
- int stringwidth_flag; /* 0 for show/charpath, */
- /* 1 for stringwidth */
- int can_cache; /* true if can cache chars */
- int cxmin, cymin, cxmax, cymax; /* int version of quick-check */
- /* clipping box */
- int is_composite; /* true if composite font */
- int ftx, fty; /* transformed font translation */
- /* Following are set at most once */
- gx_device_memory dev_cache_info;
- device dev_cache_dev;
- int dev_cache_set;
- /* Following are updated dynamically */
- uint index; /* index within string */
- gs_fixed_point wxy; /* for current char in device coords */
- cached_char *cc; /* being accumulated */
- gs_point width; /* total width of string, set at end */
- show_width_status width_status;
- gs_fixed_point metrics_sb, metrics_width; /* width and side */
- /* bearing from metrics, in */
- /* *character* coordinates */
- /* (only used for Type 1 fonts) */
- byte sb_set, width_set; /* true if metrics set */
- /* (only used for Type 1 fonts) */
- int color_loaded; /* true if have done gx_color_render */
- int (*continue_proc)(P1(struct gs_show_enum_s *)); /* continuation procedure */
- /* Following are dynamic, for composite fonts only */
- #define max_font_depth 5
- struct gs_font_s *fstack[max_font_depth];
- int fdepth;
- struct gs_font_s *pfont;
- };
- #define gs_show_enum_s_DEFINED
-
- /* Cached character procedures (in gxfont.c) */
- #ifndef gs_font_dir_DEFINED
- # define gs_font_dir_DEFINED
- typedef struct gs_font_dir_s gs_font_dir;
- #endif
- void gx_char_cache_init(P1(gs_font_dir *));
- cached_char *
- gx_alloc_char_bits(P4(gs_font_dir *, gx_device_memory *, ushort, ushort));
- void gx_free_cached_char(P2(gs_font_dir *, cached_char *));
- cached_fm_pair *
- gx_lookup_fm_pair(P1(const gs_state *));
- void gx_add_cached_char(P4(gs_font_dir *, gx_device_memory *, cached_char *, cached_fm_pair *));
- cached_char *
- gx_lookup_cached_char(P3(const gs_state *, const cached_fm_pair *, char_code));
- int gx_image_cached_char(P2(gs_show_enum *, const cached_char *));
-