git.distorted.org.uk Git - u/mdw/putty/blob - terminal.h

   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
  23 struct terminal_tag {
  24
  25     int compatibility_level;
  26
  27     tree234 *scrollback;               /* lines scrolled off top of screen */
  28     tree234 *screen;                   /* lines on primary screen */
  29     tree234 *alt_screen;               /* lines on alternate screen */
  30     int disptop;                       /* distance scrolled back (0 or -ve) */
  31
  32     unsigned long *cpos;               /* cursor position (convenience) */
  33
  34     unsigned long *disptext;           /* buffer of text on real screen */
  35     unsigned long *dispcurs;           /* location of cursor on real screen */
  36     unsigned long curstype;            /* type of cursor on real screen */
  37
  38 #define VBELL_TIMEOUT (TICKSPERSEC/10) /* visual bell lasts 1/10 sec */
  39
  40     struct beeptime *beephead, *beeptail;
  41     int nbeeps;
  42     int beep_overloaded;
  43     long lastbeep;
  44
  45 #define TSIZE (sizeof(unsigned long))
  46 #define fix_cpos do { \
  47     term->cpos = lineptr(term->curs.y) + term->curs.x; \
  48 } while(0)
  49
  50     unsigned long curr_attr, save_attr;
  51     unsigned long erase_char;
  52
  53     bufchain inbuf;                    /* terminal input buffer */
  54     pos curs;                          /* cursor */
  55     pos savecurs;                      /* saved cursor position */
  56     int marg_t, marg_b;                /* scroll margins */
  57     int dec_om;                        /* DEC origin mode flag */
  58     int wrap, wrapnext;                /* wrap flags */
  59     int insert;                        /* insert-mode flag */
  60     int cset;                          /* 0 or 1: which char set */
  61     int save_cset, save_csattr;        /* saved with cursor position */
  62     int save_utf, save_wnext;          /* saved with cursor position */
  63     int rvideo;                        /* global reverse video flag */
  64     unsigned long rvbell_startpoint;   /* for ESC[?5hESC[?5l vbell */
  65     int cursor_on;                     /* cursor enabled flag */
  66     int reset_132;                     /* Flag ESC c resets to 80 cols */
  67     int use_bce;                       /* Use Background coloured erase */
  68     int blinker;                       /* When blinking is the cursor on ? */
  69     int tblinker;                      /* When the blinking text is on */
  70     int blink_is_real;                 /* Actually blink blinking text */
  71     int term_echoing;                  /* Does terminal want local echo? */
  72     int term_editing;                  /* Does terminal want local edit? */
  73     int sco_acs, save_sco_acs;         /* CSI 10,11,12m -> OEM charset */
  74     int vt52_bold;                     /* Force bold on non-bold colours */
  75     int utf;                           /* Are we in toggleable UTF-8 mode? */
  76     int utf_state;                     /* Is there a pending UTF-8 character */
  77     int utf_char;                      /* and what is it so far. */
  78     int utf_size;                      /* The size of the UTF character. */
  79     int printing, only_printing;       /* Are we doing ANSI printing? */
  80     int print_state;                   /* state of print-end-sequence scan */
  81     bufchain printer_buf;              /* buffered data for printer */
  82     printer_job *print_job;
  83
  84     int rows, cols, savelines;
  85     int has_focus;
  86     int in_vbell;
  87     unsigned long vbell_startpoint;
  88     int app_cursor_keys, app_keypad_keys, vt52_mode;
  89     int repeat_off, cr_lf_return;
  90     int seen_disp_event;
  91     int big_cursor;
  92
  93     long last_blink;                   /* used for real blinking control */
  94     long last_tblink;
  95
  96     int xterm_mouse;                   /* send mouse messages to app */
  97     int mouse_is_down;                 /* used while tracking mouse buttons */
  98
  99     unsigned long cset_attr[2];
 100
 101 /*
 102  * Saved settings on the alternate screen.
 103  */
 104     int alt_x, alt_y, alt_om, alt_wrap, alt_wnext, alt_ins;
 105     int alt_cset, alt_sco_acs, alt_utf;
 106     int alt_t, alt_b;
 107     int alt_which;
 108
 109 #define ARGS_MAX 32                    /* max # of esc sequence arguments */
 110 #define ARG_DEFAULT 0                  /* if an arg isn't specified */
 111 #define def(a,d) ( (a) == ARG_DEFAULT ? (d) : (a) )
 112     int esc_args[ARGS_MAX];
 113     int esc_nargs;
 114     int esc_query;
 115 #define ANSI(x,y)       ((x)+((y)<<8))
 116 #define ANSI_QUE(x)     ANSI(x,TRUE)
 117
 118 #define OSC_STR_MAX 2048
 119     int osc_strlen;
 120     char osc_string[OSC_STR_MAX + 1];
 121     int osc_w;
 122
 123     char id_string[1024];
 124
 125     unsigned char *tabs;
 126
 127     enum {
 128         TOPLEVEL,
 129         SEEN_ESC,
 130         SEEN_CSI,
 131         SEEN_OSC,
 132         SEEN_OSC_W,
 133
 134         DO_CTRLS,
 135
 136         SEEN_OSC_P,
 137         OSC_STRING, OSC_MAYBE_ST,
 138         VT52_ESC,
 139         VT52_Y1,
 140         VT52_Y2,
 141         VT52_FG,
 142         VT52_BG
 143     } termstate;
 144
 145     enum {
 146         NO_SELECTION, ABOUT_TO, DRAGGING, SELECTED
 147     } selstate;
 148     enum {
 149         LEXICOGRAPHIC, RECTANGULAR
 150     } seltype;
 151     enum {
 152         SM_CHAR, SM_WORD, SM_LINE
 153     } selmode;
 154     pos selstart, selend, selanchor;
 155
 156     short wordness[256];
 157
 158     wchar_t *paste_buffer;
 159     int paste_len, paste_pos, paste_hold;
 160     long last_paste;
 161
 162     void (*resize_fn)(void *, int, int);
 163     void *resize_ctx;
 164
 165     void *ldisc;
 166 };
 167
 168 #define in_utf(term) ((term)->utf || line_codepage==CP_UTF8)
 169
 170 #endif