Commit | Line | Data |
---|---|---|
c22ca93b | 1 | /* Interface definitions for display code. |
3a22ee35 | 2 | Copyright (C) 1985, 1993, 1994 Free Software Foundation, Inc. |
c22ca93b JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
e5d77022 | 8 | the Free Software Foundation; either version 2, or (at your option) |
c22ca93b JB |
9 | any later version. |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
c22ca93b | 20 | |
87485d6f MW |
21 | #ifndef _DISPEXTERN_H_ |
22 | #define _DISPEXTERN_H_ | |
23 | ||
c22ca93b JB |
24 | /* Nonzero means last display completed and cursor is really at |
25 | cursX, cursY. Zero means it was preempted. */ | |
26 | extern int display_completed; | |
27 | ||
28 | #ifdef HAVE_X_WINDOWS | |
9f2279ad | 29 | #include <X11/Xlib.h> |
87485d6f MW |
30 | #endif |
31 | ||
32 | #ifdef MSDOS | |
33 | #include "msdos.h" | |
34 | #endif | |
9f2279ad | 35 | |
497fbd42 | 36 | #ifdef HAVE_NTGUI |
c0ac470c | 37 | #include "w32gui.h" |
497fbd42 GV |
38 | #endif |
39 | ||
87485d6f | 40 | #ifdef HAVE_FACES |
9f2279ad JA |
41 | struct face |
42 | { | |
43 | /* If this is non-zero, it is a GC we can use without modification | |
dfbb1e90 | 44 | to represent this face. Used only for ASCII characters. */ |
9f2279ad | 45 | GC gc; |
dfbb1e90 KH |
46 | |
47 | /* GC used for non-ASCII characters. */ | |
48 | GC non_ascii_gc; | |
49 | ||
42087301 | 50 | /* Pixel value for foreground color. */ |
0246d165 | 51 | EMACS_UINT foreground; |
9f2279ad | 52 | |
42087301 | 53 | /* Pixel value for background color. */ |
0246d165 | 54 | EMACS_UINT background; |
9f2279ad | 55 | |
dfbb1e90 KH |
56 | /* Font used for this face. If any fontset is set for this face, |
57 | this points to a `font' slot of the struct `font_info' for an | |
58 | ASCII font of the fontset. In that case, we should not call | |
59 | XFreeFont on it because the font may still be used somewhere | |
60 | else. */ | |
42087301 | 61 | XFontStruct *font; |
dfbb1e90 KH |
62 | |
63 | /* Fontset ID if any fontset is set for this face, else -1. */ | |
64 | int fontset; | |
9f2279ad | 65 | |
42087301 | 66 | /* Background stipple or bitmap used for this face. */ |
9f2279ad | 67 | Pixmap stipple; |
42087301 RS |
68 | |
69 | /* Pixmap_depth. */ | |
70 | unsigned int pixmap_w, pixmap_h; | |
9f2279ad | 71 | |
42087301 | 72 | /* Whether or not to underline text in this face. */ |
9f2279ad JA |
73 | char underline; |
74 | }; | |
75 | ||
42087301 | 76 | /* Let's stop using this and get rid of it. */ |
9f2279ad JA |
77 | typedef struct face *FACE; |
78 | ||
42087301 | 79 | #define NORMAL_FACE ((struct face *) 0) |
9f2279ad JA |
80 | |
81 | #define FACE_HAS_GC(f) ((f)->gc) | |
82 | #define FACE_GC(f) ((f)->gc) | |
dfbb1e90 | 83 | #define FACE_NON_ASCII_GC(f) ((f)->non_ascii_gc) |
9f2279ad JA |
84 | #define FACE_FOREGROUND(f) ((f)->foreground) |
85 | #define FACE_BACKGROUND(f) ((f)->background) | |
86 | #define FACE_FONT(f) ((f)->font) | |
dfbb1e90 | 87 | #define FACE_FONTSET(f) ((f)->fontset) |
9f2279ad JA |
88 | #define FACE_STIPPLE(f) ((f)->stipple) |
89 | #define FACE_UNDERLINE_P(f) ((f)->underline) | |
90 | ||
87485d6f | 91 | #else /* not HAVE_FACES */ |
9f2279ad JA |
92 | |
93 | typedef int FACE; | |
94 | ||
95 | #define NORMAL_FACE 0x0 | |
96 | #define HIGHLIGHT_FACE 0x1 | |
97 | #define UNDERLINE_FACE 0x2 | |
98 | #define HIGHLIGHT_UNDERLINE_FACE 0x3 | |
99 | ||
100 | #define FACE_HIGHLIGHT(f) ((f) & 0x1) | |
101 | #define FACE_UNDERLINE(f) ((f) & 0x2) | |
87485d6f MW |
102 | |
103 | #endif /* not HAVE_FACES */ | |
9f2279ad | 104 | |
c22ca93b | 105 | |
502b9b64 | 106 | /* This structure is used for the actual display of text on a frame. |
c22ca93b JB |
107 | |
108 | There are two instantiations of it: the glyphs currently displayed, | |
109 | and the glyphs we desire to display. The latter object is generated | |
42087301 | 110 | from buffers being displayed. */ |
c22ca93b | 111 | |
502b9b64 | 112 | struct frame_glyphs |
c22ca93b | 113 | { |
42087301 | 114 | struct frame *frame; /* Frame these glyphs belong to. */ |
c22ca93b JB |
115 | int height; |
116 | int width; | |
117 | ||
502b9b64 | 118 | /* Contents of the frame. |
265a9e55 JB |
119 | glyphs[V][H] is the glyph at position V, H. |
120 | Note that glyphs[V][-1], | |
121 | glyphs[V][used[V]], | |
502b9b64 | 122 | and glyphs[V][frame_width] are always '\0'. */ |
c22ca93b JB |
123 | GLYPH **glyphs; |
124 | /* long vector from which the strings in `glyphs' are taken. */ | |
125 | GLYPH *total_contents; | |
126 | ||
502b9b64 JB |
127 | /* When representing a desired frame, |
128 | enable[n] == 0 means that line n is same as current frame. | |
8f607ef0 | 129 | Between updates, all lines should be disabled. |
502b9b64 | 130 | When representing current frame contents, |
265a9e55 JB |
131 | enable[n] == 0 means that line n is blank. */ |
132 | char *enable; | |
133 | ||
134 | /* Everything on line n after column used[n] is considered blank. */ | |
135 | int *used; | |
136 | ||
c22ca93b JB |
137 | /* highlight[n] != 0 iff line n is highlighted. */ |
138 | char *highlight; | |
139 | ||
0b20d257 RS |
140 | /* Buffer offset of this line's first char. |
141 | This is not really implemented, and cannot be, | |
142 | and should be deleted. */ | |
c22ca93b JB |
143 | int *bufp; |
144 | ||
497fbd42 | 145 | #ifdef HAVE_WINDOW_SYSTEM |
42087301 | 146 | /* Pixel position of top left corner of line. */ |
9f2279ad | 147 | short *top_left_x; |
c22ca93b | 148 | short *top_left_y; |
c22ca93b | 149 | |
42087301 | 150 | /* Pixel width of line. */ |
9f2279ad JA |
151 | short *pix_width; |
152 | ||
42087301 | 153 | /* Pixel height of line. */ |
9f2279ad | 154 | short *pix_height; |
c22ca93b | 155 | |
42087301 | 156 | /* Largest font ascent on this line. */ |
9f2279ad | 157 | short *max_ascent; |
497fbd42 | 158 | #endif /* HAVE_WINDOW_SYSTEM */ |
b741d9b1 | 159 | |
0b20d257 RS |
160 | /* Mapping of coordinate pairs to buffer positions. |
161 | This field holds a vector indexed by row number. | |
162 | Its elements are vectors indexed by column number. | |
163 | Each element of these vectors is a buffer position, 0, or -1. | |
164 | ||
165 | For a column where the image of a text character starts, | |
166 | the element value is the buffer position of that character. | |
167 | When a window's screen line starts in mid character, | |
168 | the element for the line's first column (at the window's left margin) | |
169 | is that character's position. | |
170 | For successive columns within a multicolumn character, | |
171 | the element is -1. | |
172 | For the column just beyond the last glyph on a line, | |
173 | the element is the buffer position of the end of the line. | |
174 | For following columns within the same window, the element is 0. | |
175 | For rows past the end of the accessible buffer text, | |
176 | the window's first column has ZV and other columns have 0. | |
177 | ||
178 | Mode lines and vertical separator lines have 0. | |
179 | ||
180 | The column of a window's left margin | |
181 | always has a positive value (a buffer position), not 0 or -1, | |
182 | for each line in that window's interior. */ | |
183 | ||
b741d9b1 RS |
184 | int **charstarts; |
185 | ||
186 | /* This holds all the space in the subvectors of the charstarts field. */ | |
187 | int *total_charstarts; | |
9f2279ad | 188 | }; |
c22ca93b JB |
189 | |
190 | extern void get_display_line (); | |
bf34ebcf | 191 | extern Lisp_Object sit_for (); |
87485d6f MW |
192 | |
193 | #endif /* not _DISPEXTERN_H_ */ |