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1 | /* |
2 | * Internals of the Terminal structure, for those other modules |
3 | * which need to look inside it. It would be nice if this could be |
4 | * folded back into terminal.c in future, with an abstraction layer |
5 | * to handle everything that other modules need to know about it; |
6 | * but for the moment, this will do. |
7 | */ |
8 | |
9 | #ifndef PUTTY_TERMINAL_H |
10 | #define PUTTY_TERMINAL_H |
11 | |
12 | #include "tree234.h" |
13 | |
14 | struct beeptime { |
15 | struct beeptime *next; |
16 | unsigned long ticks; |
17 | }; |
18 | |
19 | typedef struct { |
20 | int y, x; |
21 | } pos; |
22 | |
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23 | #ifdef OPTIMISE_SCROLL |
24 | struct scrollregion { |
25 | struct scrollregion *next; |
26 | int topline; /* Top line of scroll region. */ |
27 | int botline; /* Bottom line of scroll region. */ |
28 | int lines; /* Number of lines to scroll by - +ve is forwards. */ |
29 | }; |
30 | #endif /* OPTIMISE_SCROLL */ |
31 | |
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32 | typedef struct termchar termchar; |
33 | typedef struct termline termline; |
34 | |
35 | struct termchar { |
36 | unsigned long chr; |
37 | unsigned long attr; |
38 | }; |
39 | |
40 | struct termline { |
41 | unsigned short lattr; |
42 | int cols; |
43 | int temporary; /* TRUE if decompressed from scrollback */ |
44 | struct termchar *chars; |
45 | }; |
46 | |
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47 | struct terminal_tag { |
48 | |
49 | int compatibility_level; |
50 | |
51 | tree234 *scrollback; /* lines scrolled off top of screen */ |
52 | tree234 *screen; /* lines on primary screen */ |
53 | tree234 *alt_screen; /* lines on alternate screen */ |
54 | int disptop; /* distance scrolled back (0 or -ve) */ |
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55 | int tempsblines; /* number of lines in temporary |
56 | scrollback */ |
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57 | |
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58 | termchar *cpos; /* cursor position (convenience) */ |
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59 | |
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60 | termline **disptext; /* buffer of text on real screen */ |
61 | int dispcursx, dispcursy; /* location of cursor on real screen */ |
62 | int curstype; /* type of cursor on real screen */ |
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63 | |
64 | #define VBELL_TIMEOUT (TICKSPERSEC/10) /* visual bell lasts 1/10 sec */ |
65 | |
66 | struct beeptime *beephead, *beeptail; |
67 | int nbeeps; |
68 | int beep_overloaded; |
69 | long lastbeep; |
70 | |
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71 | #define TTYPE termchar |
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72 | #define TSIZE (sizeof(TTYPE)) |
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73 | #define fix_cpos do { \ |
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74 | term->cpos = lineptr(term->curs.y)->chars + term->curs.x; \ |
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75 | } while(0) |
76 | |
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77 | #ifdef OPTIMISE_SCROLL |
78 | struct scrollregion *scrollhead, *scrolltail; |
79 | #endif /* OPTIMISE_SCROLL */ |
80 | |
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81 | int default_attr, curr_attr, save_attr; |
82 | termchar basic_erase_char, erase_char; |
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83 | |
84 | bufchain inbuf; /* terminal input buffer */ |
85 | pos curs; /* cursor */ |
86 | pos savecurs; /* saved cursor position */ |
87 | int marg_t, marg_b; /* scroll margins */ |
88 | int dec_om; /* DEC origin mode flag */ |
89 | int wrap, wrapnext; /* wrap flags */ |
90 | int insert; /* insert-mode flag */ |
91 | int cset; /* 0 or 1: which char set */ |
92 | int save_cset, save_csattr; /* saved with cursor position */ |
93 | int save_utf, save_wnext; /* saved with cursor position */ |
94 | int rvideo; /* global reverse video flag */ |
95 | unsigned long rvbell_startpoint; /* for ESC[?5hESC[?5l vbell */ |
96 | int cursor_on; /* cursor enabled flag */ |
97 | int reset_132; /* Flag ESC c resets to 80 cols */ |
98 | int use_bce; /* Use Background coloured erase */ |
99 | int blinker; /* When blinking is the cursor on ? */ |
100 | int tblinker; /* When the blinking text is on */ |
101 | int blink_is_real; /* Actually blink blinking text */ |
102 | int term_echoing; /* Does terminal want local echo? */ |
103 | int term_editing; /* Does terminal want local edit? */ |
104 | int sco_acs, save_sco_acs; /* CSI 10,11,12m -> OEM charset */ |
105 | int vt52_bold; /* Force bold on non-bold colours */ |
106 | int utf; /* Are we in toggleable UTF-8 mode? */ |
107 | int utf_state; /* Is there a pending UTF-8 character */ |
108 | int utf_char; /* and what is it so far. */ |
109 | int utf_size; /* The size of the UTF character. */ |
110 | int printing, only_printing; /* Are we doing ANSI printing? */ |
111 | int print_state; /* state of print-end-sequence scan */ |
112 | bufchain printer_buf; /* buffered data for printer */ |
113 | printer_job *print_job; |
114 | |
115 | int rows, cols, savelines; |
116 | int has_focus; |
117 | int in_vbell; |
118 | unsigned long vbell_startpoint; |
119 | int app_cursor_keys, app_keypad_keys, vt52_mode; |
120 | int repeat_off, cr_lf_return; |
121 | int seen_disp_event; |
122 | int big_cursor; |
123 | |
124 | long last_blink; /* used for real blinking control */ |
125 | long last_tblink; |
126 | |
127 | int xterm_mouse; /* send mouse messages to app */ |
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128 | int mouse_is_down; /* used while tracking mouse buttons */ |
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129 | |
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130 | int cset_attr[2]; |
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131 | |
132 | /* |
133 | * Saved settings on the alternate screen. |
134 | */ |
135 | int alt_x, alt_y, alt_om, alt_wrap, alt_wnext, alt_ins; |
136 | int alt_cset, alt_sco_acs, alt_utf; |
137 | int alt_t, alt_b; |
138 | int alt_which; |
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139 | int alt_sblines; /* # of lines on alternate screen that should be used for scrollback. */ |
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140 | |
141 | #define ARGS_MAX 32 /* max # of esc sequence arguments */ |
142 | #define ARG_DEFAULT 0 /* if an arg isn't specified */ |
143 | #define def(a,d) ( (a) == ARG_DEFAULT ? (d) : (a) ) |
144 | int esc_args[ARGS_MAX]; |
145 | int esc_nargs; |
146 | int esc_query; |
147 | #define ANSI(x,y) ((x)+((y)<<8)) |
148 | #define ANSI_QUE(x) ANSI(x,TRUE) |
149 | |
150 | #define OSC_STR_MAX 2048 |
151 | int osc_strlen; |
152 | char osc_string[OSC_STR_MAX + 1]; |
153 | int osc_w; |
154 | |
155 | char id_string[1024]; |
156 | |
157 | unsigned char *tabs; |
158 | |
159 | enum { |
160 | TOPLEVEL, |
161 | SEEN_ESC, |
162 | SEEN_CSI, |
163 | SEEN_OSC, |
164 | SEEN_OSC_W, |
165 | |
166 | DO_CTRLS, |
167 | |
168 | SEEN_OSC_P, |
169 | OSC_STRING, OSC_MAYBE_ST, |
170 | VT52_ESC, |
171 | VT52_Y1, |
172 | VT52_Y2, |
173 | VT52_FG, |
174 | VT52_BG |
175 | } termstate; |
176 | |
177 | enum { |
178 | NO_SELECTION, ABOUT_TO, DRAGGING, SELECTED |
179 | } selstate; |
180 | enum { |
181 | LEXICOGRAPHIC, RECTANGULAR |
182 | } seltype; |
183 | enum { |
184 | SM_CHAR, SM_WORD, SM_LINE |
185 | } selmode; |
186 | pos selstart, selend, selanchor; |
187 | |
188 | short wordness[256]; |
189 | |
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190 | /* Mask of attributes to pay attention to when painting. */ |
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191 | int attr_mask; |
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192 | |
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193 | wchar_t *paste_buffer; |
194 | int paste_len, paste_pos, paste_hold; |
195 | long last_paste; |
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196 | |
197 | void (*resize_fn)(void *, int, int); |
198 | void *resize_ctx; |
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199 | |
200 | void *ldisc; |
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201 | |
202 | void *frontend; |
203 | |
204 | void *logctx; |
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205 | |
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206 | struct unicode_data *ucsdata; |
207 | |
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208 | /* |
209 | * We maintain a full _copy_ of a Config structure here, not |
210 | * merely a pointer to it. That way, when we're passed a new |
211 | * one for reconfiguration, we can check the differences and |
212 | * adjust the _current_ setting of (e.g.) auto wrap mode rather |
213 | * than only the default. |
214 | */ |
215 | Config cfg; |
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216 | |
217 | /* |
218 | * from_backend calls term_out, but it can also be called from |
219 | * the ldisc if the ldisc is called _within_ term_out. So we |
220 | * have to guard against re-entrancy - if from_backend is |
221 | * called recursively like this, it will simply add data to the |
222 | * end of the buffer term_out is in the process of working |
223 | * through. |
224 | */ |
225 | int in_term_out; |
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226 | |
227 | /* |
228 | * These are buffers used by the bidi and Arabic shaping code. |
229 | */ |
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230 | termchar *ltemp; |
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231 | bidi_char *wcFrom, *wcTo; |
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232 | termchar **pre_bidi_cache, **post_bidi_cache; |
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233 | int bidi_cache_size; |
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234 | }; |
235 | |
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236 | #define in_utf(term) ((term)->utf || (term)->ucsdata->line_codepage==CP_UTF8) |
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237 | |
238 | #endif |