| blob | 6d3b1c54430401c014d44cf276212bd2bb839e0b |
1 /*\r
2 * Internals of the Terminal structure, for those other modules\r
3 * which need to look inside it. It would be nice if this could be\r
4 * folded back into terminal.c in future, with an abstraction layer\r
5 * to handle everything that other modules need to know about it;\r
6 * but for the moment, this will do.\r
7 */\r
8 \r
9 #ifndef PUTTY_TERMINAL_H\r
10 #define PUTTY_TERMINAL_H\r
11 \r
12 #include "tree234.h"\r
13 \r
14 struct beeptime {\r
15 struct beeptime *next;\r
16 unsigned long ticks;\r
17 };\r
18 \r
19 typedef struct {\r
20 int y, x;\r
21 } pos;\r
22 \r
23 #ifdef OPTIMISE_SCROLL\r
24 struct scrollregion {\r
25 struct scrollregion *next;\r
26 int topline; /* Top line of scroll region. */\r
27 int botline; /* Bottom line of scroll region. */\r
28 int lines; /* Number of lines to scroll by - +ve is forwards. */\r
29 };\r
30 #endif /* OPTIMISE_SCROLL */\r
31 \r
32 typedef struct termchar termchar;\r
33 typedef struct termline termline;\r
34 \r
35 struct termchar {\r
36 /*\r
37 * Any code in terminal.c which definitely needs to be changed\r
38 * when extra fields are added here is labelled with a comment\r
39 * saying FULL-TERMCHAR.\r
40 */\r
41 unsigned long chr;\r
42 unsigned long attr;\r
43 \r
44 /*\r
45 * The cc_next field is used to link multiple termchars\r
46 * together into a list, so as to fit more than one character\r
47 * into a character cell (Unicode combining characters).\r
48 * \r
49 * cc_next is a relative offset into the current array of\r
50 * termchars. I.e. to advance to the next character in a list,\r
51 * one does `tc += tc->next'.\r
52 * \r
53 * Zero means end of list.\r
54 */\r
55 int cc_next;\r
56 };\r
57 \r
58 struct termline {\r
59 unsigned short lattr;\r
60 int cols; /* number of real columns on the line */\r
61 int size; /* number of allocated termchars\r
62 * (cc-lists may make this > cols) */\r
63 int temporary; /* TRUE if decompressed from scrollback */\r
64 int cc_free; /* offset to first cc in free list */\r
65 struct termchar *chars;\r
66 };\r
67 \r
68 struct bidi_cache_entry {\r
69 int width;\r
70 struct termchar *chars;\r
71 int *forward, *backward; /* the permutations of line positions */\r
72 };\r
73 \r
74 struct terminal_tag {\r
75 \r
76 int compatibility_level;\r
77 \r
78 tree234 *scrollback; /* lines scrolled off top of screen */\r
79 tree234 *screen; /* lines on primary screen */\r
80 tree234 *alt_screen; /* lines on alternate screen */\r
81 int disptop; /* distance scrolled back (0 or -ve) */\r
82 int tempsblines; /* number of lines of .scrollback that\r
83 can be retrieved onto the terminal\r
84 ("temporary scrollback") */\r
85 \r
86 termline **disptext; /* buffer of text on real screen */\r
87 int dispcursx, dispcursy; /* location of cursor on real screen */\r
88 int curstype; /* type of cursor on real screen */\r
89 \r
90 #define VBELL_TIMEOUT (TICKSPERSEC/10) /* visual bell lasts 1/10 sec */\r
91 \r
92 struct beeptime *beephead, *beeptail;\r
93 int nbeeps;\r
94 int beep_overloaded;\r
95 long lastbeep;\r
96 \r
97 #define TTYPE termchar\r
98 #define TSIZE (sizeof(TTYPE))\r
99 \r
100 #ifdef OPTIMISE_SCROLL\r
101 struct scrollregion *scrollhead, *scrolltail;\r
102 #endif /* OPTIMISE_SCROLL */\r
103 \r
104 int default_attr, curr_attr, save_attr;\r
105 termchar basic_erase_char, erase_char;\r
106 \r
107 bufchain inbuf; /* terminal input buffer */\r
108 pos curs; /* cursor */\r
109 pos savecurs; /* saved cursor position */\r
110 int marg_t, marg_b; /* scroll margins */\r
111 int dec_om; /* DEC origin mode flag */\r
112 int wrap, wrapnext; /* wrap flags */\r
113 int insert; /* insert-mode flag */\r
114 int cset; /* 0 or 1: which char set */\r
115 int save_cset, save_csattr; /* saved with cursor position */\r
116 int save_utf, save_wnext; /* saved with cursor position */\r
117 int rvideo; /* global reverse video flag */\r
118 unsigned long rvbell_startpoint; /* for ESC[?5hESC[?5l vbell */\r
119 int cursor_on; /* cursor enabled flag */\r
120 int reset_132; /* Flag ESC c resets to 80 cols */\r
121 int use_bce; /* Use Background coloured erase */\r
122 int cblinker; /* When blinking is the cursor on ? */\r
123 int tblinker; /* When the blinking text is on */\r
124 int blink_is_real; /* Actually blink blinking text */\r
125 int term_echoing; /* Does terminal want local echo? */\r
126 int term_editing; /* Does terminal want local edit? */\r
127 int sco_acs, save_sco_acs; /* CSI 10,11,12m -> OEM charset */\r
128 int vt52_bold; /* Force bold on non-bold colours */\r
129 int utf; /* Are we in toggleable UTF-8 mode? */\r
130 int utf_state; /* Is there a pending UTF-8 character */\r
131 int utf_char; /* and what is it so far. */\r
132 int utf_size; /* The size of the UTF character. */\r
133 int printing, only_printing; /* Are we doing ANSI printing? */\r
134 int print_state; /* state of print-end-sequence scan */\r
135 bufchain printer_buf; /* buffered data for printer */\r
136 printer_job *print_job;\r
137 \r
138 /* ESC 7 saved state for the alternate screen */\r
139 pos alt_savecurs;\r
140 int alt_save_attr;\r
141 int alt_save_cset, alt_save_csattr;\r
142 int alt_save_utf, alt_save_wnext;\r
143 int alt_save_sco_acs;\r
144 \r
145 int rows, cols, savelines;\r
146 int has_focus;\r
147 int in_vbell;\r
148 long vbell_end;\r
149 int app_cursor_keys, app_keypad_keys, vt52_mode;\r
150 int repeat_off, cr_lf_return;\r
151 int seen_disp_event;\r
152 int big_cursor;\r
153 \r
154 int xterm_mouse; /* send mouse messages to host */\r
155 int mouse_is_down; /* used while tracking mouse buttons */\r
156 \r
157 int cset_attr[2];\r
158 \r
159 /*\r
160 * Saved settings on the alternate screen.\r
161 */\r
162 int alt_x, alt_y, alt_om, alt_wrap, alt_wnext, alt_ins;\r
163 int alt_cset, alt_sco_acs, alt_utf;\r
164 int alt_t, alt_b;\r
165 int alt_which;\r
166 int alt_sblines; /* # of lines on alternate screen that should be used for scrollback. */\r
167 \r
168 #define ARGS_MAX 32 /* max # of esc sequence arguments */\r
169 #define ARG_DEFAULT 0 /* if an arg isn't specified */\r
170 #define def(a,d) ( (a) == ARG_DEFAULT ? (d) : (a) )\r
171 int esc_args[ARGS_MAX];\r
172 int esc_nargs;\r
173 int esc_query;\r
174 #define ANSI(x,y) ((x)+((y)<<8))\r
175 #define ANSI_QUE(x) ANSI(x,TRUE)\r
176 \r
177 #define OSC_STR_MAX 2048\r
178 int osc_strlen;\r
179 char osc_string[OSC_STR_MAX + 1];\r
180 int osc_w;\r
181 \r
182 char id_string[1024];\r
183 \r
184 unsigned char *tabs;\r
185 \r
186 enum {\r
187 TOPLEVEL,\r
188 SEEN_ESC,\r
189 SEEN_CSI,\r
190 SEEN_OSC,\r
191 SEEN_OSC_W,\r
192 \r
193 DO_CTRLS,\r
194 \r
195 SEEN_OSC_P,\r
196 OSC_STRING, OSC_MAYBE_ST,\r
197 VT52_ESC,\r
198 VT52_Y1,\r
199 VT52_Y2,\r
200 VT52_FG,\r
201 VT52_BG\r
202 } termstate;\r
203 \r
204 enum {\r
205 NO_SELECTION, ABOUT_TO, DRAGGING, SELECTED\r
206 } selstate;\r
207 enum {\r
208 LEXICOGRAPHIC, RECTANGULAR\r
209 } seltype;\r
210 enum {\r
211 SM_CHAR, SM_WORD, SM_LINE\r
212 } selmode;\r
213 pos selstart, selend, selanchor;\r
214 \r
215 short wordness[256];\r
216 \r
217 /* Mask of attributes to pay attention to when painting. */\r
218 int attr_mask;\r
219 \r
220 wchar_t *paste_buffer;\r
221 int paste_len, paste_pos, paste_hold;\r
222 long last_paste;\r
223 \r
224 void (*resize_fn)(void *, int, int);\r
225 void *resize_ctx;\r
226 \r
227 void *ldisc;\r
228 \r
229 void *frontend;\r
230 \r
231 void *logctx;\r
232 \r
233 struct unicode_data *ucsdata;\r
234 \r
235 /*\r
236 * We maintain a full _copy_ of a Config structure here, not\r
237 * merely a pointer to it. That way, when we're passed a new\r
238 * one for reconfiguration, we can check the differences and\r
239 * adjust the _current_ setting of (e.g.) auto wrap mode rather\r
240 * than only the default.\r
241 */\r
242 Config cfg;\r
243 \r
244 /*\r
245 * from_backend calls term_out, but it can also be called from\r
246 * the ldisc if the ldisc is called _within_ term_out. So we\r
247 * have to guard against re-entrancy - if from_backend is\r
248 * called recursively like this, it will simply add data to the\r
249 * end of the buffer term_out is in the process of working\r
250 * through.\r
251 */\r
252 int in_term_out;\r
253 \r
254 /*\r
255 * We schedule a window update shortly after receiving terminal\r
256 * data. This tracks whether one is currently pending.\r
257 */\r
258 int window_update_pending;\r
259 long next_update;\r
260 \r
261 /*\r
262 * Track pending blinks and tblinks.\r
263 */\r
264 int tblink_pending, cblink_pending;\r
265 long next_tblink, next_cblink;\r
266 \r
267 /*\r
268 * These are buffers used by the bidi and Arabic shaping code.\r
269 */\r
270 termchar *ltemp;\r
271 int ltemp_size;\r
272 bidi_char *wcFrom, *wcTo;\r
273 int wcFromTo_size;\r
274 struct bidi_cache_entry *pre_bidi_cache, *post_bidi_cache;\r
275 int bidi_cache_size;\r
276 };\r
277 \r
278 #define in_utf(term) ((term)->utf || (term)->ucsdata->line_codepage==CP_UTF8)\r
279 \r
280 #endif\r