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9889c728 | 1 | /* Cursor motion calculation definitions for GNU Emacs |
429ab54e | 2 | Copyright (C) 1985, 1989, 2001, 2002, 2003, 2004, |
8cabe764 | 3 | 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
9889c728 JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
b9b1cc14 | 7 | GNU Emacs is free software: you can redistribute it and/or modify |
9889c728 | 8 | it under the terms of the GNU General Public License as published by |
b9b1cc14 GM |
9 | the Free Software Foundation, either version 3 of the License, or |
10 | (at your option) any later version. | |
9889c728 JB |
11 | |
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
b9b1cc14 | 18 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
9889c728 JB |
19 | |
20 | /* Holds the minimum and maximum costs for the parametrized capabilities. */ | |
21 | struct parmcap | |
22 | { | |
23 | int mincost, maxcost; | |
24 | }; | |
25 | ||
26 | /* This structure holds everything needed to do cursor motion except the pad | |
27 | character (PC) and the output speed of the terminal (ospeed), which | |
28 | termcap wants in global variables. */ | |
29 | ||
30 | struct cm | |
31 | { | |
32 | /* Cursor position. -1 in *both* variables means the cursor | |
33 | position is unknown, in order to force absolute cursor motion. */ | |
34 | ||
35 | int cm_curY; /* Current row */ | |
36 | int cm_curX; /* Current column */ | |
37 | ||
38 | /* Capabilities from termcap */ | |
39 | char *cm_up; /* up (up) */ | |
40 | char *cm_down; /* down (do) */ | |
41 | char *cm_left; /* left (le) */ | |
42 | char *cm_right; /* right (nd) */ | |
43 | char *cm_home; /* home (ho) */ | |
44 | char *cm_cr; /* carriage return (cr) */ | |
45 | char *cm_ll; /* last line (ll) */ | |
46 | char *cm_tab; /* tab (ta) */ | |
47 | char *cm_backtab; /* backtab (bt) */ | |
48 | char *cm_abs; /* absolute (cm) */ | |
49 | char *cm_habs; /* horizontal absolute (ch) */ | |
50 | char *cm_vabs; /* vertical absolute (cv) */ | |
51 | #if 0 | |
52 | char *cm_ds; /* "don't send" string (ds) */ | |
53 | #endif | |
54 | char *cm_multiup; /* multiple up (UP) */ | |
55 | char *cm_multidown; /* multiple down (DO) */ | |
56 | char *cm_multileft; /* multiple left (LE) */ | |
57 | char *cm_multiright; /* multiple right (RI) */ | |
58 | int cm_cols; /* number of cols on screen (co) */ | |
59 | int cm_rows; /* number of rows on screen (li) */ | |
60 | int cm_tabwidth; /* tab width (it) */ | |
61 | unsigned int cm_autowrap:1; /* autowrap flag (am) */ | |
62 | unsigned int cm_magicwrap:1; /* VT-100: cursor stays in last col but | |
63 | will cm_wrap if next char is | |
64 | printing (xn) */ | |
65 | unsigned int cm_usetabs:1; /* if set, use tabs */ | |
66 | unsigned int cm_losewrap:1; /* if reach right margin, forget cursor | |
67 | location */ | |
68 | unsigned int cm_autolf:1; /* \r performs a \r\n (rn) */ | |
69 | ||
70 | /* Parametrized capabilities. This needs to be a struct since | |
71 | the costs are accessed through pointers. */ | |
72 | ||
73 | #if 0 | |
74 | struct parmcap cc_abs; /* absolute (cm) */ | |
75 | struct parmcap cc_habs; /* horizontal absolute (ch) */ | |
76 | struct parmcap cc_vabs; /* vertical absolute (cv) */ | |
77 | struct parmcap cc_multiup; /* multiple up (UP) */ | |
78 | struct parmcap cc_multidown; /* multiple down (DO) */ | |
79 | struct parmcap cc_multileft; /* multiple left (LE) */ | |
80 | struct parmcap cc_multiright; /* multiple right (RI) */ | |
81 | #endif | |
82 | ||
83 | /* Costs for the non-parametrized capabilities */ | |
84 | int cc_up; /* cost for up */ | |
85 | int cc_down; /* etc. */ | |
86 | int cc_left; | |
87 | int cc_right; | |
88 | int cc_home; | |
89 | int cc_cr; | |
90 | int cc_ll; | |
91 | int cc_tab; | |
92 | int cc_backtab; | |
93 | /* These are temporary, until the code is installed to use the | |
94 | struct parmcap fields above. */ | |
95 | int cc_abs; | |
96 | int cc_habs; | |
97 | int cc_vabs; | |
98 | }; | |
99 | ||
9889c728 | 100 | extern char PC; /* Pad character */ |
0dc57298 | 101 | |
9889c728 JB |
102 | /* Shorthand */ |
103 | #ifndef NoCMShortHand | |
6548cf00 KL |
104 | #define curY(tty) (tty)->Wcm->cm_curY |
105 | #define curX(tty) (tty)->Wcm->cm_curX | |
106 | #define Up(tty) (tty)->Wcm->cm_up | |
107 | #define Down(tty) (tty)->Wcm->cm_down | |
108 | #define Left(tty) (tty)->Wcm->cm_left | |
109 | #define Right(tty) (tty)->Wcm->cm_right | |
110 | #define Tab(tty) (tty)->Wcm->cm_tab | |
111 | #define BackTab(tty) (tty)->Wcm->cm_backtab | |
112 | #define TabWidth(tty) (tty)->Wcm->cm_tabwidth | |
113 | #define CR(tty) (tty)->Wcm->cm_cr | |
114 | #define Home(tty) (tty)->Wcm->cm_home | |
115 | #define LastLine(tty) (tty)->Wcm->cm_ll | |
116 | #define AbsPosition(tty) (tty)->Wcm->cm_abs | |
117 | #define ColPosition(tty) (tty)->Wcm->cm_habs | |
118 | #define RowPosition(tty) (tty)->Wcm->cm_vabs | |
119 | #define MultiUp(tty) (tty)->Wcm->cm_multiup | |
120 | #define MultiDown(tty) (tty)->Wcm->cm_multidown | |
121 | #define MultiLeft(tty) (tty)->Wcm->cm_multileft | |
122 | #define MultiRight(tty) (tty)->Wcm->cm_multiright | |
123 | #define AutoWrap(tty) (tty)->Wcm->cm_autowrap | |
124 | #define MagicWrap(tty) (tty)->Wcm->cm_magicwrap | |
125 | #define UseTabs(tty) (tty)->Wcm->cm_usetabs | |
126 | #define FrameRows(tty) (tty)->Wcm->cm_rows | |
127 | #define FrameCols(tty) (tty)->Wcm->cm_cols | |
128 | ||
129 | #define UpCost(tty) (tty)->Wcm->cc_up | |
130 | #define DownCost(tty) (tty)->Wcm->cc_down | |
131 | #define LeftCost(tty) (tty)->Wcm->cc_left | |
132 | #define RightCost(tty) (tty)->Wcm->cc_right | |
133 | #define HomeCost(tty) (tty)->Wcm->cc_home | |
134 | #define CRCost(tty) (tty)->Wcm->cc_cr | |
135 | #define LastLineCost(tty) (tty)->Wcm->cc_ll | |
136 | #define TabCost(tty) (tty)->Wcm->cc_tab | |
137 | #define BackTabCost(tty) (tty)->Wcm->cc_backtab | |
138 | #define AbsPositionCost(tty) (tty)->Wcm->cc_abs | |
139 | #define ColPositionCost(tty) (tty)->Wcm->cc_habs | |
140 | #define RowPositionCost(tty) (tty)->Wcm->cc_vabs | |
141 | #define MultiUpCost(tty) (tty)->Wcm->cc_multiup | |
142 | #define MultiDownCost(tty) (tty)->Wcm->cc_multidown | |
143 | #define MultiLeftCost(tty) (tty)->Wcm->cc_multileft | |
144 | #define MultiRightCost(tty) (tty)->Wcm->cc_multiright | |
9889c728 JB |
145 | #endif |
146 | ||
6548cf00 KL |
147 | #define cmat(tty,row,col) (curY(tty) = (row), curX(tty) = (col)) |
148 | #define cmplus(tty,n) \ | |
149 | { \ | |
150 | if ((curX (tty) += (n)) >= FrameCols (tty) && !MagicWrap (tty)) \ | |
151 | { \ | |
152 | if ((tty)->Wcm->cm_losewrap) losecursor (tty); \ | |
153 | else if (AutoWrap (tty)) curX (tty) = 0, curY (tty)++; \ | |
154 | else curX (tty)--; \ | |
155 | } \ | |
9889c728 JB |
156 | } |
157 | ||
6548cf00 | 158 | #define losecursor(tty) (curX(tty) = -1, curY(tty) = -1) |
9889c728 JB |
159 | |
160 | extern int cost; | |
161 | extern int evalcost (); | |
162 | ||
28d440ab KL |
163 | #define emacs_tputs(tty, str, affcnt, putc) (current_tty = (tty), tputs (str, affcnt, putc)) |
164 | ||
28d7d09f KL |
165 | extern struct tty_display_info *current_tty; |
166 | extern void cmcheckmagic P_ ((struct tty_display_info *)); | |
28d440ab | 167 | extern int cmputc P_ ((int)); |
28d7d09f KL |
168 | extern void cmcostinit P_ ((struct tty_display_info *)); |
169 | extern void cmgoto P_ ((struct tty_display_info *, int, int)); | |
170 | extern void Wcm_clear P_ ((struct tty_display_info *)); | |
171 | extern int Wcm_init P_ ((struct tty_display_info *)); | |
ab5796a9 MB |
172 | |
173 | /* arch-tag: acc1535a-7136-49d6-b22d-9bc85702251b | |
174 | (do not change this comment) */ |