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 #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
  32 struct terminal_tag {
  33
  34     int compatibility_level;
  35
  36     tree234 *scrollback;               /* lines scrolled off top of screen */
  37     tree234 *screen;                   /* lines on primary screen */
  38     tree234 *alt_screen;               /* lines on alternate screen */
  39     int disptop;                       /* distance scrolled back (0 or -ve) */
  40     int tempsblines;                   /* number of lines in temporary
  41                                           scrollback */
  42
  43     unsigned long *cpos;               /* cursor position (convenience) */
  44
  45     unsigned long *disptext;           /* buffer of text on real screen */
  46     unsigned long *dispcurs;           /* location of cursor on real screen */
  47     unsigned long curstype;            /* type of cursor on real screen */
  48
  49 #define VBELL_TIMEOUT (TICKSPERSEC/10) /* visual bell lasts 1/10 sec */
  50
  51     struct beeptime *beephead, *beeptail;
  52     int nbeeps;
  53     int beep_overloaded;
  54     long lastbeep;
  55
  56 #define TTYPE unsigned long
  57 #define TSIZE (sizeof(TTYPE))
  58 #define fix_cpos do { \
  59     term->cpos = lineptr(term->curs.y) + term->curs.x; \
  60 } while(0)
  61
  62 #ifdef OPTIMISE_SCROLL
  63     struct scrollregion *scrollhead, *scrolltail;
  64 #endif /* OPTIMISE_SCROLL */
  65
  66     unsigned long curr_attr, save_attr;
  67     unsigned long erase_char;
  68
  69     bufchain inbuf;                    /* terminal input buffer */
  70     pos curs;                          /* cursor */
  71     pos savecurs;                      /* saved cursor position */
  72     int marg_t, marg_b;                /* scroll margins */
  73     int dec_om;                        /* DEC origin mode flag */
  74     int wrap, wrapnext;                /* wrap flags */
  75     int insert;                        /* insert-mode flag */
  76     int cset;                          /* 0 or 1: which char set */
  77     int save_cset, save_csattr;        /* saved with cursor position */
  78     int save_utf, save_wnext;          /* saved with cursor position */
  79     int rvideo;                        /* global reverse video flag */
  80     unsigned long rvbell_startpoint;   /* for ESC[?5hESC[?5l vbell */
  81     int cursor_on;                     /* cursor enabled flag */
  82     int reset_132;                     /* Flag ESC c resets to 80 cols */
  83     int use_bce;                       /* Use Background coloured erase */
  84     int blinker;                       /* When blinking is the cursor on ? */
  85     int tblinker;                      /* When the blinking text is on */
  86     int blink_is_real;                 /* Actually blink blinking text */
  87     int term_echoing;                  /* Does terminal want local echo? */
  88     int term_editing;                  /* Does terminal want local edit? */
  89     int sco_acs, save_sco_acs;         /* CSI 10,11,12m -> OEM charset */
  90     int vt52_bold;                     /* Force bold on non-bold colours */
  91     int utf;                           /* Are we in toggleable UTF-8 mode? */
  92     int utf_state;                     /* Is there a pending UTF-8 character */
  93     int utf_char;                      /* and what is it so far. */
  94     int utf_size;                      /* The size of the UTF character. */
  95     int printing, only_printing;       /* Are we doing ANSI printing? */
  96     int print_state;                   /* state of print-end-sequence scan */
  97     bufchain printer_buf;              /* buffered data for printer */
  98     printer_job *print_job;
  99
 100     int rows, cols, savelines;
 101     int has_focus;
 102     int in_vbell;
 103     unsigned long vbell_startpoint;
 104     int app_cursor_keys, app_keypad_keys, vt52_mode;
 105     int repeat_off, cr_lf_return;
 106     int seen_disp_event;
 107     int big_cursor;
 108
 109     long last_blink;                   /* used for real blinking control */
 110     long last_tblink;
 111
 112     int xterm_mouse;                   /* send mouse messages to app */
 113     int mouse_is_down;                 /* used while tracking mouse buttons */
 114
 115     unsigned long cset_attr[2];
 116
 117 /*
 118  * Saved settings on the alternate screen.
 119  */
 120     int alt_x, alt_y, alt_om, alt_wrap, alt_wnext, alt_ins;
 121     int alt_cset, alt_sco_acs, alt_utf;
 122     int alt_t, alt_b;
 123     int alt_which;
 124     int alt_sblines; /* # of lines on alternate screen that should be used for scrollback. */
 125
 126 #define ARGS_MAX 32                    /* max # of esc sequence arguments */
 127 #define ARG_DEFAULT 0                  /* if an arg isn't specified */
 128 #define def(a,d) ( (a) == ARG_DEFAULT ? (d) : (a) )
 129     int esc_args[ARGS_MAX];
 130     int esc_nargs;
 131     int esc_query;
 132 #define ANSI(x,y)       ((x)+((y)<<8))
 133 #define ANSI_QUE(x)     ANSI(x,TRUE)
 134
 135 #define OSC_STR_MAX 2048
 136     int osc_strlen;
 137     char osc_string[OSC_STR_MAX + 1];
 138     int osc_w;
 139
 140     char id_string[1024];
 141
 142     unsigned char *tabs;
 143
 144     enum {
 145         TOPLEVEL,
 146         SEEN_ESC,
 147         SEEN_CSI,
 148         SEEN_OSC,
 149         SEEN_OSC_W,
 150
 151         DO_CTRLS,
 152
 153         SEEN_OSC_P,
 154         OSC_STRING, OSC_MAYBE_ST,
 155         VT52_ESC,
 156         VT52_Y1,
 157         VT52_Y2,
 158         VT52_FG,
 159         VT52_BG
 160     } termstate;
 161
 162     enum {
 163         NO_SELECTION, ABOUT_TO, DRAGGING, SELECTED
 164     } selstate;
 165     enum {
 166         LEXICOGRAPHIC, RECTANGULAR
 167     } seltype;
 168     enum {
 169         SM_CHAR, SM_WORD, SM_LINE
 170     } selmode;
 171     pos selstart, selend, selanchor;
 172
 173     short wordness[256];
 174
 175     /* Mask of attributes to pay attention to when painting. */
 176     unsigned long attr_mask;
 177
 178     wchar_t *paste_buffer;
 179     int paste_len, paste_pos, paste_hold;
 180     long last_paste;
 181
 182     void (*resize_fn)(void *, int, int);
 183     void *resize_ctx;
 184
 185     void *ldisc;
 186
 187     void *frontend;
 188
 189     void *logctx;
 190
 191     struct unicode_data *ucsdata;
 192
 193     /*
 194      * We maintain a full _copy_ of a Config structure here, not
 195      * merely a pointer to it. That way, when we're passed a new
 196      * one for reconfiguration, we can check the differences and
 197      * adjust the _current_ setting of (e.g.) auto wrap mode rather
 198      * than only the default.
 199      */
 200     Config cfg;
 201 };
 202
 203 #define in_utf(term) ((term)->utf || (term)->ucsdata->line_codepage==CP_UTF8)
 204
 205 #endif