projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 30c31fff WJ |
1 | /* Copyright (C) 1989, 1992 Aladdin Enterprises. All rights reserved. |
| 2 | Distributed by Free Software Foundation, Inc. | |
| 3 | ||
| 4 | This file is part of Ghostscript. | |
| 5 | ||
| 6 | Ghostscript is distributed in the hope that it will be useful, but | |
| 7 | WITHOUT ANY WARRANTY. No author or distributor accepts responsibility | |
| 8 | to anyone for the consequences of using it or for whether it serves any | |
| 9 | particular purpose or works at all, unless he says so in writing. Refer | |
| 10 | to the Ghostscript General Public License for full details. | |
| 11 | ||
| 12 | Everyone is granted permission to copy, modify and redistribute | |
| 13 | Ghostscript, but only under the conditions described in the Ghostscript | |
| 14 | General Public License. A copy of this license is supposed to have been | |
| 15 | given to you along with Ghostscript so you can know your rights and | |
| 16 | responsibilities. It should be in a file named COPYING. Among other | |
| 17 | things, the copyright notice and this notice must be preserved on all | |
| 18 | copies. */ | |
| 19 | ||
| 20 | /* gxchar.h */ | |
| 21 | /* Internal character definition for Ghostscript library */ | |
| 22 | /* Requires gsmatrix.h, gxfixed.h, gzdevice.h */ | |
| 23 | #include "gschar.h" | |
| 24 | ||
| 25 | /* An entry for a (font,matrix) pair in the character cache. */ | |
| 26 | /* Either font == 0 and UniqueID != -1, or font != 0 and UniqueID == -1. */ | |
| 27 | typedef struct cached_fm_pair_s cached_fm_pair; | |
| 28 | struct cached_fm_pair_s { | |
| 29 | struct gs_font_s *font; /* base font */ | |
| 30 | long UniqueID; /* font UniqueID */ | |
| 31 | char * /* void * */ encoding; /* encoding vector (opaque) */ | |
| 32 | float mxx, mxy, myx, myy; /* transformation */ | |
| 33 | int num_chars; /* # of cached chars with this */ | |
| 34 | /* f/m pair */ | |
| 35 | }; | |
| 36 | /* If font == 0 and UniqueID == -1, this is a free entry. */ | |
| 37 | #define fm_pair_is_free(pair) ((pair)->font == 0 && (pair)->UniqueID == -1) | |
| 38 | #define fm_pair_set_free(pair) ((pair)->font = 0, (pair)->UniqueID = -1) | |
| 39 | ||
| 40 | /* The type of cached characters is opaque. */ | |
| 41 | typedef struct cached_char_s cached_char; | |
| 42 | extern const uint cached_char_sizeof; | |
| 43 | ||
| 44 | /* An enumeration object for string display. */ | |
| 45 | typedef enum { | |
| 46 | sws_none, | |
| 47 | sws_cache, /* setcachedevice */ | |
| 48 | sws_no_cache /* setcharwidth */ | |
| 49 | } show_width_status; | |
| 50 | struct gs_show_enum_s { | |
| 51 | /* Following are set at creation time */ | |
| 52 | gs_state *pgs; | |
| 53 | int level; /* save the level of pgs */ | |
| 54 | byte *str; /* char may be signed! */ | |
| 55 | uint size; | |
| 56 | float wcx, wcy; /* for widthshow */ | |
| 57 | char_code wchr; /* ditto */ | |
| 58 | float ax, ay; /* for ashow */ | |
| 59 | int add; /* true if a[width]show */ | |
| 60 | int do_kern; /* true if kshow */ | |
| 61 | int slow_show; /* [a][width]show or kshow */ | |
| 62 | int charpath_flag; /* 0 for show, 1 for false */ | |
| 63 | /* charpath, 2 for true charpath */ | |
| 64 | int stringwidth_flag; /* 0 for show/charpath, */ | |
| 65 | /* 1 for stringwidth */ | |
| 66 | int can_cache; /* true if can cache chars */ | |
| 67 | int cxmin, cymin, cxmax, cymax; /* int version of quick-check */ | |
| 68 | /* clipping box */ | |
| 69 | int is_composite; /* true if composite font */ | |
| 70 | int ftx, fty; /* transformed font translation */ | |
| 71 | /* Following are set at most once */ | |
| 72 | gx_device_memory dev_cache_info; | |
| 73 | device dev_cache_dev; | |
| 74 | int dev_cache_set; | |
| 75 | /* Following are updated dynamically */ | |
| 76 | uint index; /* index within string */ | |
| 77 | gs_fixed_point wxy; /* for current char in device coords */ | |
| 78 | cached_char *cc; /* being accumulated */ | |
| 79 | gs_point width; /* total width of string, set at end */ | |
| 80 | show_width_status width_status; | |
| 81 | gs_fixed_point metrics_sb, metrics_width; /* width and side */ | |
| 82 | /* bearing from metrics, in */ | |
| 83 | /* *character* coordinates */ | |
| 84 | /* (only used for Type 1 fonts) */ | |
| 85 | byte sb_set, width_set; /* true if metrics set */ | |
| 86 | /* (only used for Type 1 fonts) */ | |
| 87 | int color_loaded; /* true if have done gx_color_render */ | |
| 88 | int (*continue_proc)(P1(struct gs_show_enum_s *)); /* continuation procedure */ | |
| 89 | /* Following are dynamic, for composite fonts only */ | |
| 90 | #define max_font_depth 5 | |
| 91 | struct gs_font_s *fstack[max_font_depth]; | |
| 92 | int fdepth; | |
| 93 | struct gs_font_s *pfont; | |
| 94 | }; | |
| 95 | #define gs_show_enum_s_DEFINED | |
| 96 | ||
| 97 | /* Cached character procedures (in gxfont.c) */ | |
| 98 | #ifndef gs_font_dir_DEFINED | |
| 99 | # define gs_font_dir_DEFINED | |
| 100 | typedef struct gs_font_dir_s gs_font_dir; | |
| 101 | #endif | |
| 102 | void gx_char_cache_init(P1(gs_font_dir *)); | |
| 103 | cached_char * | |
| 104 | gx_alloc_char_bits(P4(gs_font_dir *, gx_device_memory *, ushort, ushort)); | |
| 105 | void gx_free_cached_char(P2(gs_font_dir *, cached_char *)); | |
| 106 | cached_fm_pair * | |
| 107 | gx_lookup_fm_pair(P1(gs_state *)); | |
| 108 | void gx_add_cached_char(P4(gs_font_dir *, gx_device_memory *, cached_char *, cached_fm_pair *)); | |
| 109 | cached_char * | |
| 110 | gx_lookup_cached_char(P3(gs_state *, cached_fm_pair *, char_code)); | |
| 111 | int gx_image_cached_char(P2(gs_show_enum *, cached_char *)); |